From 5fa718dbba13fb8dcca8a3a0ba77544b29dc60b8 Mon Sep 17 00:00:00 2001 From: Chris Kolenko Date: Tue, 9 Jul 2019 02:06:32 +1000 Subject: [PATCH] Upgrades * Upgrade to latest version of connector-sdk * Add build, push and travis files (Copied from kafka-connector) --- .DEREK.yml | 1 + .gitignore | 4 +- .travis.yml | 32 + Dockerfile | 15 +- Dockerfile.armhf | 16 + Makefile | 15 + build.sh | 25 + go.mod | 9 +- go.sum | 20 +- push.sh | 8 + vendor/github.com/nats-io/go-nats/.travis.yml | 8 +- vendor/github.com/nats-io/go-nats/README.md | 45 +- vendor/github.com/nats-io/go-nats/context.go | 69 +- vendor/github.com/nats-io/go-nats/enc.go | 10 +- vendor/github.com/nats-io/go-nats/nats.go | 677 ++++++- vendor/github.com/nats-io/nkeys/.gitignore | 15 + .../github.com/nats-io/nkeys/.goreleaser.yml | 38 + vendor/github.com/nats-io/nkeys/.travis.yml | 32 + vendor/github.com/nats-io/nkeys/GOVERNANCE.md | 3 + vendor/github.com/nats-io/nkeys/LICENSE | 201 ++ .../github.com/nats-io/nkeys/MAINTAINERS.md | 6 + vendor/github.com/nats-io/nkeys/README.md | 72 + vendor/github.com/nats-io/nkeys/TODO.md | 5 + vendor/github.com/nats-io/nkeys/crc16.go | 75 + vendor/github.com/nats-io/nkeys/go.mod | 3 + vendor/github.com/nats-io/nkeys/go.sum | 2 + vendor/github.com/nats-io/nkeys/keypair.go | 117 ++ vendor/github.com/nats-io/nkeys/main.go | 103 + vendor/github.com/nats-io/nkeys/public.go | 66 + vendor/github.com/nats-io/nkeys/strkey.go | 290 +++ .../connector-sdk/types/controller.go | 111 +- .../types/function_list_builder.go | 40 +- .../connector-sdk/types/invoker.go | 75 +- .../connector-sdk/types/make_client.go | 10 + .../connector-sdk/types/response_printer.go | 24 + .../types/response_subscriber.go | 12 + .../connector-sdk/types/topic_map.go | 26 +- vendor/github.com/pkg/errors/.gitignore | 24 + vendor/github.com/pkg/errors/.travis.yml | 15 + vendor/github.com/pkg/errors/LICENSE | 23 + vendor/github.com/pkg/errors/README.md | 52 + vendor/github.com/pkg/errors/appveyor.yml | 32 + vendor/github.com/pkg/errors/errors.go | 282 +++ vendor/github.com/pkg/errors/stack.go | 147 ++ vendor/golang.org/x/crypto/AUTHORS | 3 + vendor/golang.org/x/crypto/CONTRIBUTORS | 3 + vendor/golang.org/x/crypto/LICENSE | 27 + vendor/golang.org/x/crypto/PATENTS | 22 + vendor/golang.org/x/crypto/ed25519/ed25519.go | 217 ++ .../ed25519/internal/edwards25519/const.go | 1422 +++++++++++++ .../internal/edwards25519/edwards25519.go | 1793 +++++++++++++++++ vendor/modules.txt | 11 +- yaml/kubernetes/connector-dep.yaml | 44 + 53 files changed, 6200 insertions(+), 197 deletions(-) create mode 100644 .DEREK.yml create mode 100644 .travis.yml create mode 100644 Dockerfile.armhf create mode 100644 Makefile create mode 100644 build.sh create mode 100644 push.sh create mode 100644 vendor/github.com/nats-io/nkeys/.gitignore create mode 100644 vendor/github.com/nats-io/nkeys/.goreleaser.yml create mode 100644 vendor/github.com/nats-io/nkeys/.travis.yml create mode 100644 vendor/github.com/nats-io/nkeys/GOVERNANCE.md create mode 100644 vendor/github.com/nats-io/nkeys/LICENSE create mode 100644 vendor/github.com/nats-io/nkeys/MAINTAINERS.md create mode 100644 vendor/github.com/nats-io/nkeys/README.md create mode 100644 vendor/github.com/nats-io/nkeys/TODO.md create mode 100644 vendor/github.com/nats-io/nkeys/crc16.go create mode 100644 vendor/github.com/nats-io/nkeys/go.mod create mode 100644 vendor/github.com/nats-io/nkeys/go.sum create mode 100644 vendor/github.com/nats-io/nkeys/keypair.go create mode 100644 vendor/github.com/nats-io/nkeys/main.go create mode 100644 vendor/github.com/nats-io/nkeys/public.go create mode 100644 vendor/github.com/nats-io/nkeys/strkey.go create mode 100644 vendor/github.com/openfaas-incubator/connector-sdk/types/response_printer.go create mode 100644 vendor/github.com/openfaas-incubator/connector-sdk/types/response_subscriber.go create mode 100644 vendor/github.com/pkg/errors/.gitignore create mode 100644 vendor/github.com/pkg/errors/.travis.yml create mode 100644 vendor/github.com/pkg/errors/LICENSE create mode 100644 vendor/github.com/pkg/errors/README.md create mode 100644 vendor/github.com/pkg/errors/appveyor.yml create mode 100644 vendor/github.com/pkg/errors/errors.go create mode 100644 vendor/github.com/pkg/errors/stack.go create mode 100644 vendor/golang.org/x/crypto/AUTHORS create mode 100644 vendor/golang.org/x/crypto/CONTRIBUTORS create mode 100644 vendor/golang.org/x/crypto/LICENSE create mode 100644 vendor/golang.org/x/crypto/PATENTS create mode 100644 vendor/golang.org/x/crypto/ed25519/ed25519.go create mode 100644 vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go create mode 100644 vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go create mode 100644 yaml/kubernetes/connector-dep.yaml diff --git a/.DEREK.yml b/.DEREK.yml new file mode 100644 index 0000000..617820d --- /dev/null +++ b/.DEREK.yml @@ -0,0 +1 @@ +redirect: https://raw.githubusercontent.com/openfaas/faas/master/.DEREK.yml \ No newline at end of file diff --git a/.gitignore b/.gitignore index 6e8d4d4..90fdc8e 100644 --- a/.gitignore +++ b/.gitignore @@ -1 +1,3 @@ -nats-connector +.ash_history +connector +nats-connector \ No newline at end of file diff --git a/.travis.yml b/.travis.yml new file mode 100644 index 0000000..6e50ac8 --- /dev/null +++ b/.travis.yml @@ -0,0 +1,32 @@ +sudo: required + +language: go + +go: + - "1.10.x" + +services: + - docker + +addons: + apt: + packages: + - docker-ce + +script: + - make build + +after_success: + - if [ -z $DOCKER_NS ] ; then + export DOCKER_NS=openfaas; + fi + + - if [ ! -z "$TRAVIS_TAG" ] ; then + docker tag $DOCKER_NS/nats-connector:latest-dev $DOCKER_NS/nats-connector:$TRAVIS_TAG; + echo $DOCKER_PASSWORD | docker login -u=$DOCKER_USERNAME --password-stdin; + docker push $DOCKER_NS/nats-connector:$TRAVIS_TAG; + + docker tag $DOCKER_NS/nats-connector:latest-dev quay.io/$DOCKER_NS/nats-connector:$TRAVIS_TAG; + echo $QUAY_PASSWORD | docker login -u=$QUAY_USERNAME --password-stdin quay.io; + docker push quay.io/$DOCKER_NS/nats-connector:$TRAVIS_TAG; + fi \ No newline at end of file diff --git a/Dockerfile b/Dockerfile index af7de7f..18cff5e 100644 --- a/Dockerfile +++ b/Dockerfile @@ -1,10 +1,9 @@ -FROM golang:1.9.2 +FROM golang:1.10 as build + RUN mkdir -p /go/src/github.com/openfaas-incubator/nats-connector WORKDIR /go/src/github.com/openfaas-incubator/nats-connector COPY vendor vendor -COPY config config -COPY nats nats COPY main.go . # Run a gofmt and exclude all vendored code. @@ -13,6 +12,12 @@ RUN test -z "$(gofmt -l $(find . -type f -name '*.go' -not -path "./vendor/*"))" RUN go test -v ./... # Stripping via -ldflags "-s -w" -RUN CGO_ENABLED=0 GOOS=linux go build -a -ldflags "-s -w" -installsuffix cgo -o ./connector +RUN CGO_ENABLED=0 GOOS=linux go build -a -ldflags "-s -w" -installsuffix cgo -o /usr/bin/producer + +FROM alpine:3.9 as ship +RUN apk add --no-cache ca-certificates + +COPY --from=build /usr/bin/producer /usr/bin/producer +WORKDIR /root/ -CMD ["./connector"] +CMD ["/usr/bin/producer"] \ No newline at end of file diff --git a/Dockerfile.armhf b/Dockerfile.armhf new file mode 100644 index 0000000..0678e15 --- /dev/null +++ b/Dockerfile.armhf @@ -0,0 +1,16 @@ +FROM golang:1.10 +RUN mkdir -p /go/src/github.com/openfaas-incubator/nats-connector +WORKDIR /go/src/github.com/openfaas-incubator/nats-connector + +COPY vendor vendor +COPY main.go . + +# Run a gofmt and exclude all vendored code. +RUN test -z "$(gofmt -l $(find . -type f -name '*.go' -not -path "./vendor/*"))" + +RUN go test -v ./... + +# Stripping via -ldflags "-s -w" +RUN GOARM=7 CGO_ENABLED=0 GOOS=linux go build -a -ldflags "-s -w" -installsuffix cgo -o ./connector + +CMD ["./connector"] \ No newline at end of file diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..f96c44d --- /dev/null +++ b/Makefile @@ -0,0 +1,15 @@ +TAG?=latest-dev +NAMESPACE?=openfaas +.PHONY: build + +build: + ./build.sh $(TAG) + +ci-armhf-build: + ./build.sh $(TAG) + +ci-armhf-push: + ./build.sh $(TAG) + +push: + ./push.sh $(TAG) diff --git a/build.sh b/build.sh new file mode 100644 index 0000000..5af2541 --- /dev/null +++ b/build.sh @@ -0,0 +1,25 @@ +#!/bin/sh +set -e + +export dockerfile="Dockerfile" +export arch=$(uname -m) +export TAG="latest" + +if [ "$arch" = "armv7l" ]; then + dockerfile="Dockerfile.armhf" + TAG="latest-armhf-dev" +fi + +if [ "$1" ]; then + TAG=$1 + if [ "$arch" = "armv7l" ]; then + TAG="$1-armhf" + fi +fi + +if [ -z "$NAMESPACE" ]; then + NAMESPACE="openfaas" +fi + +docker build -t $NAMESPACE/nats-connector:$TAG . -f $dockerfile --no-cache +#(cd yaml && docker service rm nats_connector ; docker stack deploy nats -c connector-swarm.yml) \ No newline at end of file diff --git a/go.mod b/go.mod index d2271bf..89b1e82 100644 --- a/go.mod +++ b/go.mod @@ -1,9 +1,14 @@ module github.com/openfaas-incubator/nats-connector require ( - github.com/nats-io/go-nats v1.6.0 + github.com/golang/protobuf v1.3.1 // indirect + github.com/nats-io/gnatsd v1.4.1 // indirect + github.com/nats-io/go-nats v1.7.2 + github.com/nats-io/nkeys v0.0.2 // indirect github.com/nats-io/nuid v1.0.0 // indirect - github.com/openfaas-incubator/connector-sdk v0.0.0-20181118154933-2db120a2ec4b + github.com/openfaas-incubator/connector-sdk v0.0.0-20190611163053-d4baf95d4c62 github.com/openfaas/faas v0.0.0-20181122165013-495cf9e7aff0 // indirect github.com/openfaas/faas-provider v0.0.0-20181104131730-8b3147b013c6 // indirect + github.com/pkg/errors v0.8.1 // indirect + golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb // indirect ) diff --git a/go.sum b/go.sum index c80160d..5a119b2 100644 --- a/go.sum +++ b/go.sum @@ -1,10 +1,22 @@ -github.com/nats-io/go-nats v1.6.0 h1:FznPwMfrVwGnSCh7JTXyJDRW0TIkD4Tr+M1LPJt9T70= -github.com/nats-io/go-nats v1.6.0/go.mod h1:+t7RHT5ApZebkrQdnn6AhQJmhJJiKAvJUio1PiiCtj0= +github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg= +github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/nats-io/gnatsd v1.4.1 h1:RconcfDeWpKCD6QIIwiVFcvForlXpWeJP7i5/lDLy44= +github.com/nats-io/gnatsd v1.4.1/go.mod h1:nqco77VO78hLCJpIcVfygDP2rPGfsEHkGTUk94uh5DQ= +github.com/nats-io/go-nats v1.7.2 h1:cJujlwCYR8iMz5ofZSD/p2WLW8FabhkQ2lIEVbSvNSA= +github.com/nats-io/go-nats v1.7.2/go.mod h1:+t7RHT5ApZebkrQdnn6AhQJmhJJiKAvJUio1PiiCtj0= +github.com/nats-io/nkeys v0.0.2 h1:+qM7QpgXnvDDixitZtQUBDY9w/s9mu1ghS+JIbsrx6M= +github.com/nats-io/nkeys v0.0.2/go.mod h1:dab7URMsZm6Z/jp9Z5UGa87Uutgc2mVpXLC4B7TDb/4= github.com/nats-io/nuid v1.0.0 h1:44QGdhbiANq8ZCbUkdn6W5bqtg+mHuDE4wOUuxxndFs= github.com/nats-io/nuid v1.0.0/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c= -github.com/openfaas-incubator/connector-sdk v0.0.0-20181118154933-2db120a2ec4b h1:XRljIkAJNgYWzx5py2w/fRHPVuRS0/5kSXSlPTT/Evw= -github.com/openfaas-incubator/connector-sdk v0.0.0-20181118154933-2db120a2ec4b/go.mod h1:jHCtd1HCZwhuwdPy4OB8CQU7ZqzxBdWNhIhH/khCJqQ= +github.com/openfaas-incubator/connector-sdk v0.0.0-20190611163053-d4baf95d4c62 h1:NoF7kLOXQIeKRTbqa6ZOG8u+e5Ptng7aSA+R33BFKl0= +github.com/openfaas-incubator/connector-sdk v0.0.0-20190611163053-d4baf95d4c62/go.mod h1:jHCtd1HCZwhuwdPy4OB8CQU7ZqzxBdWNhIhH/khCJqQ= github.com/openfaas/faas v0.0.0-20181122165013-495cf9e7aff0 h1:4+fM0yvoGK5uhdI3kKLzJ8bZTmcyss2FAU6hfpEXh84= github.com/openfaas/faas v0.0.0-20181122165013-495cf9e7aff0/go.mod h1:E0m2rLup0Vvxg53BKxGgaYAGcZa3Xl+vvL7vSi5yQ14= github.com/openfaas/faas-provider v0.0.0-20181104131730-8b3147b013c6 h1:PGmPk5iR8IY2Gl4SlMd2+o4sUmeEFBGFy0SmJoxSIlU= github.com/openfaas/faas-provider v0.0.0-20181104131730-8b3147b013c6/go.mod h1:W4OIp33RUOpR7wW+omJB/7GhIydRmYXvKf/VqUKI4yM= +github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I= +github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= +golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0= +golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= +golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb h1:fgwFCsaw9buMuxNd6+DQfAuSFqbNiQZpcgJQAgJsK6k= +golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= diff --git a/push.sh b/push.sh new file mode 100644 index 0000000..81981da --- /dev/null +++ b/push.sh @@ -0,0 +1,8 @@ +#!/bin/sh +set -e + +if [ -z "$NAMESPACE" ]; then + NAMESPACE="openfaas" +fi + +docker push $NAMESPACE/nats-connector:$TAG \ No newline at end of file diff --git a/vendor/github.com/nats-io/go-nats/.travis.yml b/vendor/github.com/nats-io/go-nats/.travis.yml index 732e475..b46060d 100644 --- a/vendor/github.com/nats-io/go-nats/.travis.yml +++ b/vendor/github.com/nats-io/go-nats/.travis.yml @@ -3,19 +3,19 @@ sudo: false go: - 1.11.x - 1.10.x -- 1.9.x +go_import_path: github.com/nats-io/go-nats install: - go get -t ./... - go get github.com/nats-io/gnatsd - go get github.com/mattn/goveralls - go get github.com/wadey/gocovmerge -- go get -u honnef.co/go/tools/cmd/megacheck +- go get -u honnef.co/go/tools/cmd/staticcheck - go get -u github.com/client9/misspell/cmd/misspell before_script: - $(exit $(go fmt ./... | wc -l)) - go vet ./... - misspell -error -locale US . -- megacheck -ignore "$(cat staticcheck.ignore)" ./... +- staticcheck -ignore "$(cat staticcheck.ignore)" ./... script: - go test -i -race ./... -- if [[ "$TRAVIS_GO_VERSION" == 1.11.* ]]; then ./scripts/cov.sh TRAVIS; else go test -v -race ./...; fi +- if [[ "$TRAVIS_GO_VERSION" =~ 1.11 ]]; then ./scripts/cov.sh TRAVIS; else go test -race ./...; fi diff --git a/vendor/github.com/nats-io/go-nats/README.md b/vendor/github.com/nats-io/go-nats/README.md index 933a1ef..a2bbdf9 100644 --- a/vendor/github.com/nats-io/go-nats/README.md +++ b/vendor/github.com/nats-io/go-nats/README.md @@ -18,6 +18,7 @@ go get github.com/nats-io/gnatsd ## Basic Usage ```go +import nats "github.com/nats-io/go-nats" // Connect to a server nc, _ := nats.Connect(nats.DefaultURL) @@ -115,6 +116,48 @@ c.Subscribe("help", func(subj, reply string, msg string) { c.Close(); ``` +## New Authentication (Nkeys and User Credentials) +This requires server with version >= 2.0.0 + +NATS servers have a new security and authentication mechanism to authenticate with user credentials and Nkeys. +The simplest form is to use the helper method UserCredentials(credsFilepath). +```go +nc, err := nats.Connect(url, UserCredentials("user.creds")) +``` + +The helper methos creates two callback handlers to present the user JWT and sign the nonce challenge from the server. +The core client library never has direct access to your private key and simply performs the callback for signing the server challenge. +The helper will load and wipe and erase memory it uses for each connect or reconnect. + +The helper also can take two entries, one for the JWT and one for the NKey seed file. +```go +nc, err := nats.Connect(url, UserCredentials("user.jwt", "user.nk")) +``` + +You can also set the callback handlers directly and manage challenge signing directly. +```go +nc, err := nats.Connect(url, UserJWT(jwtCB, sigCB)) +``` + +Bare Nkeys are also supported. The nkey seed should be in a read only file, e.g. seed.txt +```bash +> cat seed.txt +# This is my seed nkey! +SUAGMJH5XLGZKQQWAWKRZJIGMOU4HPFUYLXJMXOO5NLFEO2OOQJ5LPRDPM +``` + +This is a helper function which will load and decode and do the proper signing for the server nonce. +It will clear memory in between invocations. +You can choose to use the low level option and provide the public key and a signature callback on your own. + +```go +opt, err := nats.NkeyOptionFromSeed("seed.txt") +nc, err := nats.Connect(serverUrl, opt) + +// Direct +nc, err := nats.Connect(serverUrl, Nkey(pubNkey, sigCB)) +``` + ## TLS ```go @@ -271,7 +314,7 @@ nc, err = nats.Connect(servers, nats.DisconnectHandler(func(nc *nats.Conn) { fmt.Printf("Got disconnected!\n") }), - nats.ReconnectHandler(func(_ *nats.Conn) { + nats.ReconnectHandler(func(nc *nats.Conn) { fmt.Printf("Got reconnected to %v!\n", nc.ConnectedUrl()) }), nats.ClosedHandler(func(nc *nats.Conn) { diff --git a/vendor/github.com/nats-io/go-nats/context.go b/vendor/github.com/nats-io/go-nats/context.go index 3d75356..ee5576f 100644 --- a/vendor/github.com/nats-io/go-nats/context.go +++ b/vendor/github.com/nats-io/go-nats/context.go @@ -18,7 +18,6 @@ package nats import ( "context" - "fmt" "reflect" ) @@ -46,9 +45,7 @@ func (nc *Conn) RequestWithContext(ctx context.Context, subj string, data []byte // Do setup for the new style. if nc.respMap == nil { - // _INBOX wildcard - nc.respSub = fmt.Sprintf("%s.*", NewInbox()) - nc.respMap = make(map[string]chan *Msg) + nc.initNewResp() } // Create literal Inbox and map to a chan msg. mch := make(chan *Msg, RequestChanLen) @@ -132,19 +129,33 @@ func (s *Subscription) NextMsgWithContext(ctx context.Context) (*Msg, error) { return nil, err } + // snapshot mch := s.mch s.mu.Unlock() var ok bool var msg *Msg + // If something is available right away, let's optimize that case. select { case msg, ok = <-mch: if !ok { return nil, ErrConnectionClosed } - err := s.processNextMsgDelivered(msg) - if err != nil { + if err := s.processNextMsgDelivered(msg); err != nil { + return nil, err + } else { + return msg, nil + } + default: + } + + select { + case msg, ok = <-mch: + if !ok { + return nil, ErrConnectionClosed + } + if err := s.processNextMsgDelivered(msg); err != nil { return nil, err } case <-ctx.Done(): @@ -154,6 +165,52 @@ func (s *Subscription) NextMsgWithContext(ctx context.Context) (*Msg, error) { return msg, nil } +// FlushWithContext will allow a context to control the duration +// of a Flush() call. This context should be non-nil and should +// have a deadline set. We will return an error if none is present. +func (nc *Conn) FlushWithContext(ctx context.Context) error { + if nc == nil { + return ErrInvalidConnection + } + if ctx == nil { + return ErrInvalidContext + } + _, ok := ctx.Deadline() + if !ok { + return ErrNoDeadlineContext + } + + nc.mu.Lock() + if nc.isClosed() { + nc.mu.Unlock() + return ErrConnectionClosed + } + // Create a buffered channel to prevent chan send to block + // in processPong() + ch := make(chan struct{}, 1) + nc.sendPing(ch) + nc.mu.Unlock() + + var err error + + select { + case _, ok := <-ch: + if !ok { + err = ErrConnectionClosed + } else { + close(ch) + } + case <-ctx.Done(): + err = ctx.Err() + } + + if err != nil { + nc.removeFlushEntry(ch) + } + + return err +} + // RequestWithContext will create an Inbox and perform a Request // using the provided cancellation context with the Inbox reply // for the data v. A response will be decoded into the vPtrResponse. diff --git a/vendor/github.com/nats-io/go-nats/enc.go b/vendor/github.com/nats-io/go-nats/enc.go index 0f06acc..9a0dd2c 100644 --- a/vendor/github.com/nats-io/go-nats/enc.go +++ b/vendor/github.com/nats-io/go-nats/enc.go @@ -21,7 +21,7 @@ import ( "time" // Default Encoders - . "github.com/nats-io/go-nats/encoders/builtin" + "github.com/nats-io/go-nats/encoders/builtin" ) // Encoder interface is for all register encoders @@ -43,9 +43,9 @@ const ( func init() { encMap = make(map[string]Encoder) // Register json, gob and default encoder - RegisterEncoder(JSON_ENCODER, &JsonEncoder{}) - RegisterEncoder(GOB_ENCODER, &GobEncoder{}) - RegisterEncoder(DEFAULT_ENCODER, &DefaultEncoder{}) + RegisterEncoder(JSON_ENCODER, &builtin.JsonEncoder{}) + RegisterEncoder(GOB_ENCODER, &builtin.GobEncoder{}) + RegisterEncoder(DEFAULT_ENCODER, &builtin.DefaultEncoder{}) } // EncodedConn are the preferred way to interface with NATS. They wrap a bare connection to @@ -67,7 +67,7 @@ func NewEncodedConn(c *Conn, encType string) (*EncodedConn, error) { } ec := &EncodedConn{Conn: c, Enc: EncoderForType(encType)} if ec.Enc == nil { - return nil, fmt.Errorf("No encoder registered for '%s'", encType) + return nil, fmt.Errorf("no encoder registered for '%s'", encType) } return ec, nil } diff --git a/vendor/github.com/nats-io/go-nats/nats.go b/vendor/github.com/nats-io/go-nats/nats.go index 0b33a7a..ec43708 100644 --- a/vendor/github.com/nats-io/go-nats/nats.go +++ b/vendor/github.com/nats-io/go-nats/nats.go @@ -1,4 +1,4 @@ -// Copyright 2012-2018 The NATS Authors +// Copyright 2012-2019 The NATS Authors // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at @@ -19,6 +19,7 @@ import ( "bytes" "crypto/tls" "crypto/x509" + "encoding/base64" "encoding/json" "errors" "fmt" @@ -27,6 +28,7 @@ import ( "math/rand" "net" "net/url" + "regexp" "runtime" "strconv" "strings" @@ -35,12 +37,13 @@ import ( "time" "github.com/nats-io/go-nats/util" + "github.com/nats-io/nkeys" "github.com/nats-io/nuid" ) // Default Constants const ( - Version = "1.6.0" + Version = "1.7.2" DefaultURL = "nats://localhost:4222" DefaultPort = 4222 DefaultMaxReconnect = 60 @@ -55,14 +58,16 @@ const ( LangString = "go" ) -// STALE_CONNECTION is for detection and proper handling of stale connections. -const STALE_CONNECTION = "stale connection" +const ( + // STALE_CONNECTION is for detection and proper handling of stale connections. + STALE_CONNECTION = "stale connection" -// PERMISSIONS_ERR is for when nats server subject authorization has failed. -const PERMISSIONS_ERR = "permissions violation" + // PERMISSIONS_ERR is for when nats server subject authorization has failed. + PERMISSIONS_ERR = "permissions violation" -// AUTHORIZATION_ERR is for when nats server user authorization has failed. -const AUTHORIZATION_ERR = "authorization violation" + // AUTHORIZATION_ERR is for when nats server user authorization has failed. + AUTHORIZATION_ERR = "authorization violation" +) // Errors var ( @@ -92,8 +97,16 @@ var ( ErrInvalidMsg = errors.New("nats: invalid message or message nil") ErrInvalidArg = errors.New("nats: invalid argument") ErrInvalidContext = errors.New("nats: invalid context") + ErrNoDeadlineContext = errors.New("nats: context requires a deadline") ErrNoEchoNotSupported = errors.New("nats: no echo option not supported by this server") + ErrClientIDNotSupported = errors.New("nats: client ID not supported by this server") + ErrUserButNoSigCB = errors.New("nats: user callback defined without a signature handler") + ErrNkeyButNoSigCB = errors.New("nats: nkey defined without a signature handler") + ErrNoUserCB = errors.New("nats: user callback not defined") + ErrNkeyAndUser = errors.New("nats: user callback and nkey defined") + ErrNkeysNotSupported = errors.New("nats: nkeys not supported by the server") ErrStaleConnection = errors.New("nats: " + STALE_CONNECTION) + ErrTokenAlreadySet = errors.New("nats: token and token handler both set") ) // GetDefaultOptions returns default configuration options for the client. @@ -137,6 +150,18 @@ type ConnHandler func(*Conn) // while processing inbound messages. type ErrHandler func(*Conn, *Subscription, error) +// UserJWTHandler is used to fetch and return the account signed +// JWT for this user. +type UserJWTHandler func() (string, error) + +// SignatureHandler is used to sign a nonce from the server while +// authenticating with nkeys. The user should sign the nonce and +// return the base64 encoded signature. +type SignatureHandler func([]byte) ([]byte, error) + +// AuthTokenHandler is used to generate a new token. +type AuthTokenHandler func() string + // asyncCB is used to preserve order for async callbacks. type asyncCB struct { f func() @@ -219,8 +244,8 @@ type Options struct { // DrainTimeout sets the timeout for a Drain Operation to complete. DrainTimeout time.Duration - // FlusherTimeout is the maximum time to wait for the flusher loop - // to be able to finish writing to the underlying connection. + // FlusherTimeout is the maximum time to wait for write operations + // to the underlying connection to complete (including the flusher loop). FlusherTimeout time.Duration // PingInterval is the period at which the client will be sending ping @@ -260,6 +285,18 @@ type Options struct { // dictated by PendingLimits() SubChanLen int + // UserJWT sets the callback handler that will fetch a user's JWT. + UserJWT UserJWTHandler + + // Nkey sets the public nkey that will be used to authenticate + // when connecting to the server. UserJWT and Nkey are mutually exclusive + // and if defined, UserJWT will take precedence. + Nkey string + + // SignatureCB designates the function used to sign the nonce + // presented from the server. + SignatureCB SignatureHandler + // User sets the username to be used when connecting to the server. User string @@ -269,6 +306,9 @@ type Options struct { // Token sets the token to be used when connecting to a server. Token string + // TokenHandler designates the function used to generate the token to be used when connecting to a server. + TokenHandler AuthTokenHandler + // Dialer allows a custom net.Dialer when forming connections. // DEPRECATED: should use CustomDialer instead. Dialer *net.Dialer @@ -315,10 +355,10 @@ type Conn struct { // Modifying the configuration of a running Conn is a race. Opts Options wg sync.WaitGroup - url *url.URL - conn net.Conn srvPool []*srv + current *srv urls map[string]struct{} // Keep track of all known URLs (used by processInfo) + conn net.Conn bw *bufio.Writer pending *bytes.Buffer fch chan struct{} @@ -341,6 +381,7 @@ type Conn struct { respMux *Subscription // A single response subscription respMap map[string]chan *Msg // Request map for the response msg channels respSetup sync.Once // Ensures response subscription occurs once + respRand *rand.Rand // Used for generating suffix. } // A Subscription represents interest in a given subject. @@ -416,6 +457,7 @@ type srv struct { reconnects int lastAttempt time.Time isImplicit bool + tlsName string } type serverInfo struct { @@ -428,6 +470,8 @@ type serverInfo struct { MaxPayload int64 `json:"max_payload"` ConnectURLs []string `json:"connect_urls,omitempty"` Proto int `json:"proto,omitempty"` + CID uint64 `json:"client_id,omitempty"` + Nonce string `json:"nonce,omitempty"` } const ( @@ -440,17 +484,20 @@ const ( ) type connectInfo struct { - Verbose bool `json:"verbose"` - Pedantic bool `json:"pedantic"` - User string `json:"user,omitempty"` - Pass string `json:"pass,omitempty"` - Token string `json:"auth_token,omitempty"` - TLS bool `json:"tls_required"` - Name string `json:"name"` - Lang string `json:"lang"` - Version string `json:"version"` - Protocol int `json:"protocol"` - Echo bool `json:"echo"` + Verbose bool `json:"verbose"` + Pedantic bool `json:"pedantic"` + UserJWT string `json:"jwt,omitempty"` + Nkey string `json:"nkey,omitempty"` + Signature string `json:"sig,omitempty"` + User string `json:"user,omitempty"` + Pass string `json:"pass,omitempty"` + Token string `json:"auth_token,omitempty"` + TLS bool `json:"tls_required"` + Name string `json:"name"` + Lang string `json:"lang"` + Version string `json:"version"` + Protocol int `json:"protocol"` + Echo bool `json:"echo"` } // MsgHandler is a callback function that processes messages delivered to @@ -486,11 +533,11 @@ func Name(name string) Option { // Secure is an Option to enable TLS secure connections that skip server verification by default. // Pass a TLS Configuration for proper TLS. +// NOTE: This should NOT be used in a production setting. func Secure(tls ...*tls.Config) Option { return func(o *Options) error { o.Secure = true // Use of variadic just simplifies testing scenarios. We only take the first one. - // fixme(DLC) - Could panic if more than one. Could also do TLS option. if len(tls) > 1 { return ErrMultipleTLSConfigs } @@ -501,8 +548,8 @@ func Secure(tls ...*tls.Config) Option { } } -// RootCAs is a helper option to provide the RootCAs pool from a list of filenames. If Secure is -// not already set this will set it as well. +// RootCAs is a helper option to provide the RootCAs pool from a list of filenames. +// If Secure is not already set this will set it as well. func RootCAs(file ...string) Option { return func(o *Options) error { pool := x509.NewCertPool() @@ -525,8 +572,8 @@ func RootCAs(file ...string) Option { } } -// ClientCert is a helper option to provide the client certificate from a file. If Secure is -// not already set this will set it as well +// ClientCert is a helper option to provide the client certificate from a file. +// If Secure is not already set this will set it as well. func ClientCert(certFile, keyFile string) Option { return func(o *Options) error { cert, err := tls.LoadX509KeyPair(certFile, keyFile) @@ -587,7 +634,7 @@ func MaxReconnects(max int) Option { } } -// PingInterval is an Option to set the period for client ping commands +// PingInterval is an Option to set the period for client ping commands. func PingInterval(t time.Duration) Option { return func(o *Options) error { o.PingInterval = t @@ -595,7 +642,16 @@ func PingInterval(t time.Duration) Option { } } -// ReconnectBufSize sets the buffer size of messages kept while busy reconnecting +// MaxPingsOutstanding is an Option to set the maximum number of ping requests +// that can go un-answered by the server before closing the connection. +func MaxPingsOutstanding(max int) Option { + return func(o *Options) error { + o.MaxPingsOut = max + return nil + } +} + +// ReconnectBufSize sets the buffer size of messages kept while busy reconnecting. func ReconnectBufSize(size int) Option { return func(o *Options) error { o.ReconnectBufSize = size @@ -611,6 +667,14 @@ func Timeout(t time.Duration) Option { } } +// FlusherTimeout is an Option to set the write (and flush) timeout on a connection. +func FlusherTimeout(t time.Duration) Option { + return func(o *Options) error { + o.FlusherTimeout = t + return nil + } +} + // DrainTimeout is an Option to set the timeout for draining a connection. func DrainTimeout(t time.Duration) Option { return func(o *Options) error { @@ -669,15 +733,89 @@ func UserInfo(user, password string) Option { } } -// Token is an Option to set the token to use when not included -// directly in the URLs. +// Token is an Option to set the token to use +// when a token is not included directly in the URLs +// and when a token handler is not provided. func Token(token string) Option { return func(o *Options) error { + if o.TokenHandler != nil { + return ErrTokenAlreadySet + } o.Token = token return nil } } +// TokenHandler is an Option to set the token handler to use +// when a token is not included directly in the URLs +// and when a token is not set. +func TokenHandler(cb AuthTokenHandler) Option { + return func(o *Options) error { + if o.Token != "" { + return ErrTokenAlreadySet + } + o.TokenHandler = cb + return nil + } +} + +// UserCredentials is a convenience function that takes a filename +// for a user's JWT and a filename for the user's private Nkey seed. +func UserCredentials(userOrChainedFile string, seedFiles ...string) Option { + userCB := func() (string, error) { + return userFromFile(userOrChainedFile) + } + var keyFile string + if len(seedFiles) > 0 { + keyFile = seedFiles[0] + } else { + keyFile = userOrChainedFile + } + sigCB := func(nonce []byte) ([]byte, error) { + return sigHandler(nonce, keyFile) + } + return UserJWT(userCB, sigCB) +} + +// UserJWT will set the callbacks to retrieve the user's JWT and +// the signature callback to sign the server nonce. This an the Nkey +// option are mutually exclusive. +func UserJWT(userCB UserJWTHandler, sigCB SignatureHandler) Option { + return func(o *Options) error { + if userCB == nil { + return ErrNoUserCB + } + if sigCB == nil { + return ErrUserButNoSigCB + } + o.UserJWT = userCB + o.SignatureCB = sigCB + return nil + } +} + +// Nkey will set the public Nkey and the signature callback to +// sign the server nonce. +func Nkey(pubKey string, sigCB SignatureHandler) Option { + return func(o *Options) error { + o.Nkey = pubKey + o.SignatureCB = sigCB + if pubKey != "" && sigCB == nil { + return ErrNkeyButNoSigCB + } + return nil + } +} + +// SyncQueueLen will set the maximum queue len for the internal +// channel used for SubscribeSync(). +func SyncQueueLen(max int) Option { + return func(o *Options) error { + o.SubChanLen = max + return nil + } +} + // Dialer is an Option to set the dialer which will be used when // attempting to establish a connection. // DEPRECATED: Should use CustomDialer instead. @@ -758,8 +896,8 @@ func (nc *Conn) SetErrorHandler(cb ErrHandler) { nc.Opts.AsyncErrorCB = cb } -// Process the url string argument to Connect. Return an array of -// urls, even if only one. +// Process the url string argument to Connect. +// Return an array of urls, even if only one. func processUrlString(url string) []string { urls := strings.Split(url, ",") for i, s := range urls { @@ -789,6 +927,16 @@ func (o Options) Connect() (*Conn, error) { nc.Opts.Timeout = DefaultTimeout } + // Check first for user jwt callback being defined and nkey. + if nc.Opts.UserJWT != nil && nc.Opts.Nkey != "" { + return nil, ErrNkeyAndUser + } + + // Check if we have an nkey but no signature callback defined. + if nc.Opts.Nkey != "" && nc.Opts.SignatureCB == nil { + return nil, ErrNkeyButNoSigCB + } + // Allow custom Dialer for connecting using DialTimeout by default if nc.Opts.Dialer == nil { nc.Opts.Dialer = &net.Dialer{ @@ -843,7 +991,7 @@ func (nc *Conn) currentServer() (int, *srv) { if s == nil { continue } - if s.url == nc.url { + if s == nc.current { return i, s } } @@ -867,22 +1015,23 @@ func (nc *Conn) selectNextServer() (*srv, error) { nc.srvPool = sp[0 : num-1] } if len(nc.srvPool) <= 0 { - nc.url = nil + nc.current = nil return nil, ErrNoServers } - nc.url = nc.srvPool[0].url + nc.current = nc.srvPool[0] return nc.srvPool[0], nil } -// Will assign the correct server to the nc.Url +// Will assign the correct server to nc.current func (nc *Conn) pickServer() error { - nc.url = nil + nc.current = nil if len(nc.srvPool) <= 0 { return ErrNoServers } + for _, s := range nc.srvPool { if s != nil { - nc.url = s.url + nc.current = s return nil } } @@ -900,9 +1049,9 @@ func (nc *Conn) setupServerPool() error { nc.urls = make(map[string]struct{}, srvPoolSize) // Create srv objects from each url string in nc.Opts.Servers - // and add them to the pool + // and add them to the pool. for _, urlString := range nc.Opts.Servers { - if err := nc.addURLToPool(urlString, false); err != nil { + if err := nc.addURLToPool(urlString, false, false); err != nil { return err } } @@ -916,7 +1065,7 @@ func (nc *Conn) setupServerPool() error { // but we always allowed that, so continue to do so. if nc.Opts.Url != _EMPTY_ { // Add to the end of the array - if err := nc.addURLToPool(nc.Opts.Url, false); err != nil { + if err := nc.addURLToPool(nc.Opts.Url, false, false); err != nil { return err } // Then swap it with first to guarantee that Options.Url is tried first. @@ -926,7 +1075,7 @@ func (nc *Conn) setupServerPool() error { } } else if len(nc.srvPool) <= 0 { // Place default URL if pool is empty. - if err := nc.addURLToPool(DefaultURL, false); err != nil { + if err := nc.addURLToPool(DefaultURL, false, false); err != nil { return err } } @@ -945,10 +1094,23 @@ func (nc *Conn) setupServerPool() error { return nc.pickServer() } +// Helper function to return scheme +func (nc *Conn) connScheme() string { + if nc.Opts.Secure { + return tlsScheme + } + return "nats" +} + +// Return true iff u.Hostname() is an IP address. +func hostIsIP(u *url.URL) bool { + return net.ParseIP(u.Hostname()) != nil +} + // addURLToPool adds an entry to the server pool -func (nc *Conn) addURLToPool(sURL string, implicit bool) error { +func (nc *Conn) addURLToPool(sURL string, implicit, saveTLSName bool) error { if !strings.Contains(sURL, "://") { - sURL = "nats://" + sURL + sURL = fmt.Sprintf("%s://%s", nc.connScheme(), sURL) } var ( u *url.URL @@ -969,7 +1131,24 @@ func (nc *Conn) addURLToPool(sURL string, implicit bool) error { } sURL += defaultPortString } - s := &srv{url: u, isImplicit: implicit} + + var tlsName string + if implicit { + curl := nc.current.url + // Check to see if we do not have a url.User but current connected + // url does. If so copy over. + if u.User == nil && curl.User != nil { + u.User = curl.User + } + // We are checking to see if we have a secure connection and are + // adding an implicit server that just has an IP. If so we will remember + // the current hostname we are connected to. + if saveTLSName && hostIsIP(u) { + tlsName = curl.Hostname() + } + } + + s := &srv{url: u, isImplicit: implicit, tlsName: tlsName} nc.srvPool = append(nc.srvPool, s) nc.urls[u.Host] = struct{}{} return nil @@ -988,6 +1167,14 @@ func (nc *Conn) shufflePool() { } } +func (nc *Conn) newBuffer() *bufio.Writer { + var w io.Writer = nc.conn + if nc.Opts.FlusherTimeout > 0 { + w = &timeoutWriter{conn: nc.conn, timeout: nc.Opts.FlusherTimeout} + } + return bufio.NewWriterSize(w, defaultBufSize) +} + // createConn will connect to the server and wrap the appropriate // bufio structures. It will do the right thing when an existing // connection is in place. @@ -1001,14 +1188,38 @@ func (nc *Conn) createConn() (err error) { cur.lastAttempt = time.Now() } + // We will auto-expand host names if they resolve to multiple IPs + hosts := map[string]struct{}{} + u := nc.current.url + + if net.ParseIP(u.Hostname()) == nil { + addrs, _ := net.LookupHost(u.Hostname()) + for _, addr := range addrs { + hosts[net.JoinHostPort(addr, u.Port())] = struct{}{} + } + } + // Fall back to what we were given. + if len(hosts) == 0 { + hosts[u.Host] = struct{}{} + } + // CustomDialer takes precedence. If not set, use Opts.Dialer which // is set to a default *net.Dialer (in Connect()) if not explicitly // set by the user. dialer := nc.Opts.CustomDialer if dialer == nil { - dialer = nc.Opts.Dialer + // We will copy and shorten the timeout if we have multiple hosts to try. + copyDialer := *nc.Opts.Dialer + copyDialer.Timeout = copyDialer.Timeout / time.Duration(len(hosts)) + dialer = ©Dialer + } + + for host := range hosts { + nc.conn, err = dialer.Dial("tcp", host) + if err == nil { + break + } } - nc.conn, err = dialer.Dial("tcp", nc.url.Host) if err != nil { return err } @@ -1023,29 +1234,35 @@ func (nc *Conn) createConn() (err error) { // Move to pending buffer. nc.bw.Flush() } - nc.bw = bufio.NewWriterSize(nc.conn, defaultBufSize) + nc.bw = nc.newBuffer() return nil } // makeTLSConn will wrap an existing Conn using TLS -func (nc *Conn) makeTLSConn() { - // Allow the user to configure their own tls.Config structure, otherwise - // default to InsecureSkipVerify. - // TODO(dlc) - We should make the more secure version the default. +func (nc *Conn) makeTLSConn() error { + // Allow the user to configure their own tls.Config structure. + var tlsCopy *tls.Config if nc.Opts.TLSConfig != nil { - tlsCopy := util.CloneTLSConfig(nc.Opts.TLSConfig) - // If its blank we will override it with the current host - if tlsCopy.ServerName == _EMPTY_ { - h, _, _ := net.SplitHostPort(nc.url.Host) + tlsCopy = util.CloneTLSConfig(nc.Opts.TLSConfig) + } else { + tlsCopy = &tls.Config{} + } + // If its blank we will override it with the current host + if tlsCopy.ServerName == _EMPTY_ { + if nc.current.tlsName != _EMPTY_ { + tlsCopy.ServerName = nc.current.tlsName + } else { + h, _, _ := net.SplitHostPort(nc.current.url.Host) tlsCopy.ServerName = h } - nc.conn = tls.Client(nc.conn, tlsCopy) - } else { - nc.conn = tls.Client(nc.conn, &tls.Config{InsecureSkipVerify: true}) } + nc.conn = tls.Client(nc.conn, tlsCopy) conn := nc.conn.(*tls.Conn) - conn.Handshake() - nc.bw = bufio.NewWriterSize(nc.conn, defaultBufSize) + if err := conn.Handshake(); err != nil { + return err + } + nc.bw = nc.newBuffer() + return nil } // waitForExits will wait for all socket watcher Go routines to @@ -1071,7 +1288,20 @@ func (nc *Conn) ConnectedUrl() string { if nc.status != CONNECTED { return _EMPTY_ } - return nc.url.String() + return nc.current.url.String() +} + +// ConnectedAddr returns the connected server's IP +func (nc *Conn) ConnectedAddr() string { + if nc == nil { + return _EMPTY_ + } + nc.mu.Lock() + defer nc.mu.Unlock() + if nc.status != CONNECTED { + return _EMPTY_ + } + return nc.conn.RemoteAddr().String() } // Report the connected server's Id @@ -1153,7 +1383,7 @@ func (nc *Conn) connect() error { nc.initc = true // The pool may change inside the loop iteration due to INFO protocol. for i := 0; i < len(nc.srvPool); i++ { - nc.url = nc.srvPool[i].url + nc.current = nc.srvPool[i] if err := nc.createConn(); err == nil { // This was moved out of processConnectInit() because @@ -1172,7 +1402,7 @@ func (nc *Conn) connect() error { nc.mu.Unlock() nc.close(DISCONNECTED, false) nc.mu.Lock() - nc.url = nil + nc.current = nil } } else { // Cancel out default connection refused, will trigger the @@ -1208,7 +1438,9 @@ func (nc *Conn) checkForSecure() error { // Need to rewrap with bufio if o.Secure { - nc.makeTLSConn() + if err := nc.makeTLSConn(); err != nil { + return err + } } return nil } @@ -1235,6 +1467,10 @@ func (nc *Conn) processExpectedInfo() error { return err } + if nc.Opts.Nkey != "" && nc.info.Nonce == "" { + return ErrNkeysNotSupported + } + return nc.checkForSecure() } @@ -1251,8 +1487,8 @@ func (nc *Conn) sendProto(proto string) { // applicable. The lock is assumed to be held upon entering. func (nc *Conn) connectProto() (string, error) { o := nc.Opts - var user, pass, token string - u := nc.url.User + var nkey, sig, user, pass, token, ujwt string + u := nc.current.url.User if u != nil { // if no password, assume username is authToken if _, ok := u.Password(); !ok { @@ -1263,12 +1499,46 @@ func (nc *Conn) connectProto() (string, error) { } } else { // Take from options (possibly all empty strings) - user = nc.Opts.User - pass = nc.Opts.Password - token = nc.Opts.Token + user = o.User + pass = o.Password + token = o.Token + nkey = o.Nkey + } + + // Look for user jwt. + if o.UserJWT != nil { + if jwt, err := o.UserJWT(); err != nil { + return _EMPTY_, err + } else { + ujwt = jwt + } + if nkey != _EMPTY_ { + return _EMPTY_, ErrNkeyAndUser + } } - cinfo := connectInfo{o.Verbose, o.Pedantic, user, pass, token, + if ujwt != _EMPTY_ || nkey != _EMPTY_ { + if o.SignatureCB == nil { + if ujwt == _EMPTY_ { + return _EMPTY_, ErrNkeyButNoSigCB + } + return _EMPTY_, ErrUserButNoSigCB + } + sigraw, err := o.SignatureCB([]byte(nc.info.Nonce)) + if err != nil { + return _EMPTY_, err + } + sig = base64.RawURLEncoding.EncodeToString(sigraw) + } + + if nc.Opts.TokenHandler != nil { + if token != _EMPTY_ { + return _EMPTY_, ErrTokenAlreadySet + } + token = nc.Opts.TokenHandler() + } + + cinfo := connectInfo{o.Verbose, o.Pedantic, ujwt, nkey, sig, user, pass, token, o.Secure, o.Name, LangString, Version, clientProtoInfo, !o.NoEcho} b, err := json.Marshal(cinfo) @@ -1286,7 +1556,7 @@ func (nc *Conn) connectProto() (string, error) { // normalizeErr removes the prefix -ERR, trim spaces and remove the quotes. func normalizeErr(line string) string { - s := strings.ToLower(strings.TrimSpace(strings.TrimPrefix(line, _ERR_OP_))) + s := strings.TrimSpace(strings.TrimPrefix(line, _ERR_OP_)) s = strings.TrimLeft(strings.TrimRight(s, "'"), "'") return s } @@ -1710,7 +1980,6 @@ func (nc *Conn) readLoop() { nc.processOpErr(err) break } - if err := nc.parse(b[:n]); err != nil { nc.processOpErr(err) break @@ -1940,7 +2209,6 @@ func (nc *Conn) flusher() { bw := nc.bw conn := nc.conn fch := nc.fch - flusherTimeout := nc.Opts.FlusherTimeout nc.mu.Unlock() if conn == nil || bw == nil { @@ -1959,18 +2227,11 @@ func (nc *Conn) flusher() { return } if bw.Buffered() > 0 { - // Allow customizing how long we should wait for a flush to be done - // to prevent unhealthy connections blocking the client for too long. - if flusherTimeout > 0 { - conn.SetWriteDeadline(time.Now().Add(flusherTimeout)) - } - if err := bw.Flush(); err != nil { if nc.err == nil { nc.err = err } } - conn.SetWriteDeadline(time.Time{}) } nc.mu.Unlock() } @@ -2049,7 +2310,7 @@ func (nc *Conn) processInfo(info string) error { delete(tmp, curl) // Keep servers that were set through Options, but also the one that // we are currently connected to (even if it is a discovered server). - if !srv.isImplicit || srv.url == nc.url { + if !srv.isImplicit || srv.url == nc.current.url { continue } if !inInfo { @@ -2060,6 +2321,11 @@ func (nc *Conn) processInfo(info string) error { i-- } } + // Figure out if we should save off the current non-IP hostname if we encounter a bare IP. + var saveTLS bool + if nc.current != nil && nc.Opts.Secure && !hostIsIP(nc.current.url) { + saveTLS = true + } // If there are any left in the tmp map, these are new (or restarted) servers // and need to be added to the pool. for curl := range tmp { @@ -2068,11 +2334,12 @@ func (nc *Conn) processInfo(info string) error { if _, present := nc.urls[curl]; !present { hasNew = true } - nc.addURLToPool(fmt.Sprintf("nats://%s", curl), true) + nc.addURLToPool(fmt.Sprintf("%s://%s", nc.connScheme(), curl), true, saveTLS) } if hasNew && !nc.initc && nc.Opts.DiscoveredServersCB != nil { nc.ach.push(func() { nc.Opts.DiscoveredServersCB(nc) }) } + return nil } @@ -2101,20 +2368,22 @@ func (nc *Conn) LastError() error { // processErr processes any error messages from the server and // sets the connection's lastError. -func (nc *Conn) processErr(e string) { - // Trim, remove quotes, convert to lower case. - e = normalizeErr(e) +func (nc *Conn) processErr(ie string) { + // Trim, remove quotes + ne := normalizeErr(ie) + // convert to lower case. + e := strings.ToLower(ne) // FIXME(dlc) - process Slow Consumer signals special. if e == STALE_CONNECTION { nc.processOpErr(ErrStaleConnection) } else if strings.HasPrefix(e, PERMISSIONS_ERR) { - nc.processPermissionsViolation(e) + nc.processPermissionsViolation(ne) } else if strings.HasPrefix(e, AUTHORIZATION_ERR) { - nc.processAuthorizationViolation(e) + nc.processAuthorizationViolation(ne) } else { nc.mu.Lock() - nc.err = errors.New("nats: " + e) + nc.err = errors.New("nats: " + ne) nc.mu.Unlock() nc.Close() } @@ -2311,9 +2580,7 @@ func (nc *Conn) Request(subj string, data []byte, timeout time.Duration) (*Msg, // Do setup for the new style. if nc.respMap == nil { - // _INBOX wildcard - nc.respSub = fmt.Sprintf("%s.*", NewInbox()) - nc.respMap = make(map[string]chan *Msg) + nc.initNewResp() } // Create literal Inbox and map to a chan msg. mch := make(chan *Msg, RequestChanLen) @@ -2380,9 +2647,14 @@ func (nc *Conn) oldRequest(subj string, data []byte, timeout time.Duration) (*Ms } // InboxPrefix is the prefix for all inbox subjects. -const InboxPrefix = "_INBOX." -const inboxPrefixLen = len(InboxPrefix) -const respInboxPrefixLen = inboxPrefixLen + nuidSize + 1 +const ( + InboxPrefix = "_INBOX." + inboxPrefixLen = len(InboxPrefix) + respInboxPrefixLen = inboxPrefixLen + nuidSize + 1 + replySuffixLen = 8 // Gives us 62^8 + rdigits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" + base = 62 +) // NewInbox will return an inbox string which can be used for directed replies from // subscribers. These are guaranteed to be unique, but can be shared and subscribed @@ -2396,17 +2668,40 @@ func NewInbox() string { return string(b[:]) } -// Creates a new literal response subject that will trigger -// the global subscription handler. +// Function to init new response structures. +func (nc *Conn) initNewResp() { + // _INBOX wildcard + nc.respSub = fmt.Sprintf("%s.*", NewInbox()) + nc.respMap = make(map[string]chan *Msg) + nc.respRand = rand.New(rand.NewSource(time.Now().UnixNano())) +} + +// newRespInbox creates a new literal response subject +// that will trigger the mux subscription handler. +// Lock should be held. func (nc *Conn) newRespInbox() string { - var b [inboxPrefixLen + (2 * nuidSize) + 1]byte + if nc.respMap == nil { + nc.initNewResp() + } + var b [respInboxPrefixLen + replySuffixLen]byte pres := b[:respInboxPrefixLen] copy(pres, nc.respSub) - ns := b[respInboxPrefixLen:] - copy(ns, nuid.Next()) + rn := nc.respRand.Int63() + for i, l := respInboxPrefixLen, rn; i < len(b); i++ { + b[i] = rdigits[l%base] + l /= base + } return string(b[:]) } +// NewRespInbox is the new format used for _INBOX. +func (nc *Conn) NewRespInbox() string { + nc.mu.Lock() + s := nc.newRespInbox() + nc.mu.Unlock() + return s +} + // respToken will return the last token of a literal response inbox // which we use for the message channel lookup. func respToken(respInbox string) string { @@ -2490,7 +2785,6 @@ func (nc *Conn) subscribe(subj, queue string, cb MsgHandler, ch chan *Msg) (*Sub nc.mu.Lock() // ok here, but defer is generally expensive defer nc.mu.Unlock() - defer nc.kickFlusher() // Check for some error conditions. if nc.isClosed() { @@ -2527,10 +2821,15 @@ func (nc *Conn) subscribe(subj, queue string, cb MsgHandler, ch chan *Msg) (*Sub nc.subsMu.Unlock() // We will send these for all subs when we reconnect - // so that we can suppress here. + // so that we can suppress here if reconnecting. if !nc.isReconnecting() { fmt.Fprintf(nc.bw, subProto, subj, queue, sub.sid) + // Kick flusher if needed. + if len(nc.fch) == 0 { + nc.kickFlusher() + } } + return sub, nil } @@ -2743,6 +3042,23 @@ func (s *Subscription) NextMsg(timeout time.Duration) (*Msg, error) { var ok bool var msg *Msg + // If something is available right away, let's optimize that case. + select { + case msg, ok = <-mch: + if !ok { + return nil, ErrConnectionClosed + } + if err := s.processNextMsgDelivered(msg); err != nil { + return nil, err + } else { + return msg, nil + } + default: + } + + // If we are here a message was not immediately available, so lets loop + // with a timeout. + t := globalTimerPool.Get(timeout) defer globalTimerPool.Put(t) @@ -2751,8 +3067,7 @@ func (s *Subscription) NextMsg(timeout time.Duration) (*Msg, error) { if !ok { return nil, ErrConnectionClosed } - err := s.processNextMsgDelivered(msg) - if err != nil { + if err := s.processNextMsgDelivered(msg); err != nil { return nil, err } case <-t.C: @@ -3078,7 +3393,6 @@ func (nc *Conn) resendSubscriptions() { if s.delivered < s.max { adjustedMax = s.max - s.delivered } - // adjustedMax could be 0 here if the number of delivered msgs // reached the max, if so unsubscribe. if adjustedMax == 0 { @@ -3241,6 +3555,7 @@ func (nc *Conn) drainConnection() { // for pushing errors with context. pushErr := func(err error) { nc.mu.Lock() + nc.err = err if errCB != nil { nc.ach.push(func() { errCB(nc, nil, err) }) } @@ -3475,3 +3790,151 @@ func (nc *Conn) Barrier(f func()) error { nc.mu.Unlock() return nil } + +// GetClientID returns the client ID assigned by the server to which +// the client is currently connected to. Note that the value may change if +// the client reconnects. +// This function returns ErrNoClientIDReturned if the server is of a +// version prior to 1.2.0. +func (nc *Conn) GetClientID() (uint64, error) { + nc.mu.Lock() + defer nc.mu.Unlock() + if nc.isClosed() { + return 0, ErrConnectionClosed + } + if nc.info.CID == 0 { + return 0, ErrClientIDNotSupported + } + return nc.info.CID, nil +} + +// NkeyOptionFromSeed will load an nkey pair from a seed file. +// It will return the NKey Option and will handle +// signing of nonce challenges from the server. It will take +// care to not hold keys in memory and to wipe memory. +func NkeyOptionFromSeed(seedFile string) (Option, error) { + kp, err := nkeyPairFromSeedFile(seedFile) + if err != nil { + return nil, err + } + // Wipe our key on exit. + defer kp.Wipe() + + pub, err := kp.PublicKey() + if err != nil { + return nil, err + } + if !nkeys.IsValidPublicUserKey(pub) { + return nil, fmt.Errorf("nats: Not a valid nkey user seed") + } + sigCB := func(nonce []byte) ([]byte, error) { + return sigHandler(nonce, seedFile) + } + return Nkey(string(pub), sigCB), nil +} + +// This is a regex to match decorated jwts in keys/seeds. +// .e.g. +// -----BEGIN NATS USER JWT----- +// eyJ0eXAiOiJqd3QiLCJhbGciOiJlZDI1NTE5... +// ------END NATS USER JWT------ +// +// ************************* IMPORTANT ************************* +// NKEY Seed printed below can be used sign and prove identity. +// NKEYs are sensitive and should be treated as secrets. +// +// -----BEGIN USER NKEY SEED----- +// SUAIO3FHUX5PNV2LQIIP7TZ3N4L7TX3W53MQGEIVYFIGA635OZCKEYHFLM +// ------END USER NKEY SEED------ + +var nscDecoratedRe = regexp.MustCompile(`\s*(?:(?:[-]{3,}[^\n]*[-]{3,}\n)(.+)(?:\n\s*[-]{3,}[^\n]*[-]{3,}\n))`) + +func userFromFile(userFile string) (string, error) { + contents, err := ioutil.ReadFile(userFile) + if err != nil { + return _EMPTY_, fmt.Errorf("nats: %v", err) + } + defer wipeSlice(contents) + + items := nscDecoratedRe.FindAllSubmatch(contents, -1) + if len(items) == 0 { + return string(contents), nil + } + // First result should be the user JWT. + // We copy here so that if the file contained a seed file too we wipe appropriately. + raw := items[0][1] + tmp := make([]byte, len(raw)) + copy(tmp, raw) + return string(tmp), nil +} + +func nkeyPairFromSeedFile(seedFile string) (nkeys.KeyPair, error) { + var seed []byte + contents, err := ioutil.ReadFile(seedFile) + if err != nil { + return nil, fmt.Errorf("nats: %v", err) + } + defer wipeSlice(contents) + + items := nscDecoratedRe.FindAllSubmatch(contents, -1) + if len(items) > 1 { + seed = items[1][1] + } else { + lines := bytes.Split(contents, []byte("\n")) + for _, line := range lines { + if bytes.HasPrefix(bytes.TrimSpace(line), []byte("SU")) { + seed = line + break + } + } + } + + if seed == nil { + return nil, fmt.Errorf("nats: No nkey user seed found in %q", seedFile) + } + kp, err := nkeys.FromSeed(seed) + if err != nil { + return nil, err + } + return kp, nil +} + +// Sign authentication challenges from the server. +// Do not keep private seed in memory. +func sigHandler(nonce []byte, seedFile string) ([]byte, error) { + kp, err := nkeyPairFromSeedFile(seedFile) + if err != nil { + return nil, err + } + // Wipe our key on exit. + defer kp.Wipe() + + sig, _ := kp.Sign(nonce) + return sig, nil +} + +// Just wipe slice with 'x', for clearing contents of nkey seed file. +func wipeSlice(buf []byte) { + for i := range buf { + buf[i] = 'x' + } +} + +type timeoutWriter struct { + timeout time.Duration + conn net.Conn + err error +} + +// Write implements the io.Writer interface. +func (tw *timeoutWriter) Write(p []byte) (int, error) { + if tw.err != nil { + return 0, tw.err + } + + var n int + tw.conn.SetWriteDeadline(time.Now().Add(tw.timeout)) + n, tw.err = tw.conn.Write(p) + tw.conn.SetWriteDeadline(time.Time{}) + return n, tw.err +} diff --git a/vendor/github.com/nats-io/nkeys/.gitignore b/vendor/github.com/nats-io/nkeys/.gitignore new file mode 100644 index 0000000..9dca5eb --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/.gitignore @@ -0,0 +1,15 @@ +# Binaries for programs and plugins +*.exe +*.dll +*.so +*.dylib +build/ + +# Test binary, build with `go test -c` +*.test + +# Output of the go coverage tool, specifically when used with LiteIDE +*.out + +# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736 +.glide/ diff --git a/vendor/github.com/nats-io/nkeys/.goreleaser.yml b/vendor/github.com/nats-io/nkeys/.goreleaser.yml new file mode 100644 index 0000000..6df08be --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/.goreleaser.yml @@ -0,0 +1,38 @@ +project_name: nkeys +release: + github: + owner: nats-io + name: nkeys + name_template: '{{.Tag}}' + draft: true +builds: + - main: ./nk/main.go + ldflags: "-X main.Version={{.Tag}}_{{.Commit}}" + binary: nk + goos: + - linux + - darwin + goarch: + - amd64 + + +dist: build + +archive: + wrap_in_directory: true + name_template: '{{ .ProjectName }}-v{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm + }}v{{ .Arm }}{{ end }}' + format: zip + +checksum: + name_template: '{{ .ProjectName }}-v{{ .Version }}-checksums.txt' + +snapshot: + name_template: 'dev' + +nfpm: + formats: + - deb + bindir: /usr/local/bin + description: NKeys utility cli program + vendor: nats-io diff --git a/vendor/github.com/nats-io/nkeys/.travis.yml b/vendor/github.com/nats-io/nkeys/.travis.yml new file mode 100644 index 0000000..59041cd --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/.travis.yml @@ -0,0 +1,32 @@ +language: go +sudo: false +go: +- 1.11 +- 1.10.x +- 1.9.x + +install: +- go get -t ./... +- go get github.com/mattn/goveralls +- go get -u honnef.co/go/tools/cmd/megacheck +- go get -u github.com/client9/misspell/cmd/misspell + +before_script: +- $(exit $(go fmt ./... | wc -l)) +- go vet ./... +- misspell -error -locale US . +- megacheck -ignore "$(cat staticcheck.ignore)" ./... + +script: +- go test -v +- go test -v --race +- go test -v -covermode=count -coverprofile=coverage.out +- $HOME/gopath/bin/goveralls -coverprofile coverage.out -service travis-ci + +#deploy: +#- provider: script +# skip_cleanup: true +# script: curl -sL http://git.io/goreleaser | bash +# on: +# tags: true +# condition: $TRAVIS_OS_NAME = linux \ No newline at end of file diff --git a/vendor/github.com/nats-io/nkeys/GOVERNANCE.md b/vendor/github.com/nats-io/nkeys/GOVERNANCE.md new file mode 100644 index 0000000..744d3bc --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/GOVERNANCE.md @@ -0,0 +1,3 @@ +# NATS NKEYS Governance + +NATS NKEYS is part of the NATS project and is subject to the [NATS Governance](https://github.com/nats-io/nats-general/blob/master/GOVERNANCE.md). \ No newline at end of file diff --git a/vendor/github.com/nats-io/nkeys/LICENSE b/vendor/github.com/nats-io/nkeys/LICENSE new file mode 100644 index 0000000..261eeb9 --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/LICENSE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/nats-io/nkeys/MAINTAINERS.md b/vendor/github.com/nats-io/nkeys/MAINTAINERS.md new file mode 100644 index 0000000..6d0ed3e --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/MAINTAINERS.md @@ -0,0 +1,6 @@ +# Maintainers + +Maintainership is on a per project basis. + +### Core-maintainers + - Derek Collison [@derekcollison](https://github.com/derekcollison) \ No newline at end of file diff --git a/vendor/github.com/nats-io/nkeys/README.md b/vendor/github.com/nats-io/nkeys/README.md new file mode 100644 index 0000000..5cb8786 --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/README.md @@ -0,0 +1,72 @@ +# NKEYS + +[![License Apache 2](https://img.shields.io/badge/License-Apache2-blue.svg)](https://www.apache.org/licenses/LICENSE-2.0) +[![ReportCard](http://goreportcard.com/badge/nats-io/nkeys)](http://goreportcard.com/report/nats-io/nkeys) +[![Build Status](https://travis-ci.org/nats-io/nkeys.svg?branch=master)](http://travis-ci.org/nats-io/nkeys) +[![GoDoc](http://godoc.org/github.com/nats-io/nkeys?status.svg)](http://godoc.org/github.com/nats-io/nkeys) +[![Coverage Status](https://coveralls.io/repos/github/nats-io/nkeys/badge.svg?branch=master&service=github)](https://coveralls.io/github/nats-io/nkeys?branch=master) +[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fnats-io%2Fnkeys.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Fnats-io%2Fnkeys?ref=badge_shield) + +A public-key signature system based on [Ed25519](https://ed25519.cr.yp.to/) for the NATS ecosystem. + +## About + +The NATS ecosystem will be moving to [Ed25519](https://ed25519.cr.yp.to/) keys for identity, authentication and authorization for entities such as Accounts, Users, Servers and Clusters. + +Ed25519 is fast and resistant to side channel attacks. Generation of a seed key is all that is needed to be stored and kept safe, as the seed can generate both the public and private keys. + +The NATS system will utilize Ed25519 keys, meaning that NATS systems will never store or even have access to any private keys. Authentication will utilize a random challenge response mechanism. + +Dealing with 32 byte and 64 byte raw keys can be challenging. NKEYS is designed to formulate keys in a much friendlier fashion and references work done in cryptocurrencies, specifically [Stellar](https://www.stellar.org/). Bitcoin and others used a form of Base58 (or Base58Check) to endode raw keys. Stellar utilized a more traditonal Base32 with a CRC16 and a version or prefix byte. NKEYS utilizes a similar format where the prefix will be 1 byte for public and private keys and will be 2 bytes for seeds. The base32 encoding of these prefixes will yield friendly human readbable prefixes, e.g. '**N**' = server, '**C**' = cluster, '**O**' = operator, '**A**' = account, and '**U**' = user. '**P**' is used for private keys. For seeds, the first encoded prefix is '**S**', and the second character will be the type for the public key, e.g. "**SU**" is a seed for a user key pair, "**SA**" is a seed for an account key pair. + +## Installation + +Use the `go` command: + + $ go get github.com/nats-io/nkeys + +## nk - Command Line Utility + +Located under the nk [directory](https://github.com/nats-io/nkeys/tree/master/nk). + +## Basic API Usage +```go + +// Create a new User KeyPair +user, _ := nkeys.CreateUser() + +// Sign some data with a full key pair user. +data := []byte("Hello World") +sig, _ := user.Sign(data) + +// Verify the signature. +err = user.Verify(data, sig) + +// Access the seed, the only thing that needs to be stored and kept safe. +// seed = "SUAKYRHVIOREXV7EUZTBHUHL7NUMHPMAS7QMDU3GTIUWEI5LDNOXD43IZY" +seed, _ := user.Seed() + +// Access the public key which can be shared. +// publicKey = "UD466L6EBCM3YY5HEGHJANNTN4LSKTSUXTH7RILHCKEQMQHTBNLHJJXT" +publicKey, _ := user.PublicKey() + +// Create a full User who can sign and verify from a private seed. +user, _ = nkeys.FromSeed(seed) + +// Create a User who can only verify signatures via a public key. +user, _ = nkeys.FromPublicKey(publicKey) + +// Create a User KeyPair with our own random data. +var rawSeed [32]byte +_, err := io.ReadFull(rand.Reader, rawSeed[:]) // Or some other random source. +user2, _ := nkeys.FromRawSeed(PrefixByteUser, rawSeed) + +``` + +## License + +Unless otherwise noted, the NATS source files are distributed +under the Apache Version 2.0 license found in the LICENSE file. + + +[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fnats-io%2Fnkeys.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fnats-io%2Fnkeys?ref=badge_large) \ No newline at end of file diff --git a/vendor/github.com/nats-io/nkeys/TODO.md b/vendor/github.com/nats-io/nkeys/TODO.md new file mode 100644 index 0000000..2649c9e --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/TODO.md @@ -0,0 +1,5 @@ + +# General + +- [ ] Child key derivation +- [ ] Hardware support, e.g. YubiHSM diff --git a/vendor/github.com/nats-io/nkeys/crc16.go b/vendor/github.com/nats-io/nkeys/crc16.go new file mode 100644 index 0000000..c3356cf --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/crc16.go @@ -0,0 +1,75 @@ +// Copyright 2018 The NATS Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nkeys + +import ( + "errors" +) + +// An implementation of crc16 according to CCITT standards for XMODEM. + +// ErrInvalidChecksum indicates a failed verification. +var ErrInvalidChecksum = errors.New("nkeys: invalid checksum") + +var crc16tab = [256]uint16{ + 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, + 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, + 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, + 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, + 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, + 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, + 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, + 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, + 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, + 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, + 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, + 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, + 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, + 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, + 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, + 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, + 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, + 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, + 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, + 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, + 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, + 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, + 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, + 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, + 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, + 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, + 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, + 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, + 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, + 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, + 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, + 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0, +} + +// crc16 returns the 2-byte crc for the data provided. +func crc16(data []byte) uint16 { + var crc uint16 + for _, b := range data { + crc = ((crc << 8) & 0xffff) ^ crc16tab[((crc>>8)^uint16(b))&0x00FF] + } + return crc +} + +// validate will check the calculated crc16 checksum for data against the expected. +func validate(data []byte, expected uint16) error { + if crc16(data) != expected { + return ErrInvalidChecksum + } + return nil +} diff --git a/vendor/github.com/nats-io/nkeys/go.mod b/vendor/github.com/nats-io/nkeys/go.mod new file mode 100644 index 0000000..64a700a --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/go.mod @@ -0,0 +1,3 @@ +module github.com/nats-io/nkeys + +require golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 diff --git a/vendor/github.com/nats-io/nkeys/go.sum b/vendor/github.com/nats-io/nkeys/go.sum new file mode 100644 index 0000000..8c4e7ae --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/go.sum @@ -0,0 +1,2 @@ +golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 h1:mKdxBk7AujPs8kU4m80U72y/zjbZ3UcXC7dClwKbUI0= +golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= diff --git a/vendor/github.com/nats-io/nkeys/keypair.go b/vendor/github.com/nats-io/nkeys/keypair.go new file mode 100644 index 0000000..acd8674 --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/keypair.go @@ -0,0 +1,117 @@ +// Copyright 2018 The NATS Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nkeys + +import ( + "bytes" + "crypto/rand" + "io" + + "golang.org/x/crypto/ed25519" +) + +// kp is the internal struct for a kepypair using seed. +type kp struct { + seed []byte +} + +// CreatePair will create a KeyPair based on the rand entropy and a type/prefix byte. rand can be nil. +func CreatePair(prefix PrefixByte) (KeyPair, error) { + var rawSeed [32]byte + + _, err := io.ReadFull(rand.Reader, rawSeed[:]) + if err != nil { + return nil, err + } + + seed, err := EncodeSeed(prefix, rawSeed[:]) + if err != nil { + return nil, err + } + return &kp{seed}, nil +} + +// rawSeed will return the raw, decoded 64 byte seed. +func (pair *kp) rawSeed() ([]byte, error) { + _, raw, err := DecodeSeed(pair.seed) + return raw, err +} + +// keys will return a 32 byte public key and a 64 byte private key utilizing the seed. +func (pair *kp) keys() (ed25519.PublicKey, ed25519.PrivateKey, error) { + raw, err := pair.rawSeed() + if err != nil { + return nil, nil, err + } + return ed25519.GenerateKey(bytes.NewReader(raw)) +} + +// Wipe will randomize the contents of the seed key +func (pair *kp) Wipe() { + io.ReadFull(rand.Reader, pair.seed) + pair.seed = nil +} + +// Seed will return the encoded seed. +func (pair *kp) Seed() ([]byte, error) { + return pair.seed, nil +} + +// PublicKey will return the encoded public key associated with the KeyPair. +// All KeyPairs have a public key. +func (pair *kp) PublicKey() (string, error) { + public, raw, err := DecodeSeed(pair.seed) + if err != nil { + return "", err + } + pub, _, err := ed25519.GenerateKey(bytes.NewReader(raw)) + if err != nil { + return "", err + } + pk, err := Encode(public, pub) + if err != nil { + return "", err + } + return string(pk), nil +} + +// PrivateKey will return the encoded private key for KeyPair. +func (pair *kp) PrivateKey() ([]byte, error) { + _, priv, err := pair.keys() + if err != nil { + return nil, err + } + return Encode(PrefixBytePrivate, priv) +} + +// Sign will sign the input with KeyPair's private key. +func (pair *kp) Sign(input []byte) ([]byte, error) { + _, priv, err := pair.keys() + if err != nil { + return nil, err + } + return ed25519.Sign(priv, input), nil +} + +// Verify will verify the input against a signature utilizing the public key. +func (pair *kp) Verify(input []byte, sig []byte) error { + pub, _, err := pair.keys() + if err != nil { + return err + } + if !ed25519.Verify(pub, input, sig) { + return ErrInvalidSignature + } + return nil +} diff --git a/vendor/github.com/nats-io/nkeys/main.go b/vendor/github.com/nats-io/nkeys/main.go new file mode 100644 index 0000000..5b05df5 --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/main.go @@ -0,0 +1,103 @@ +// Copyright 2018 The NATS Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package nkeys is an Ed25519 based public-key signature system that simplifies keys and seeds +// and performs signing and verification. +package nkeys + +import ( + "errors" +) + +// Version +const Version = "0.0.2" + +// Errors +var ( + ErrInvalidPrefixByte = errors.New("nkeys: invalid prefix byte") + ErrInvalidKey = errors.New("nkeys: invalid key") + ErrInvalidPublicKey = errors.New("nkeys: invalid public key") + ErrInvalidSeedLen = errors.New("nkeys: invalid seed length") + ErrInvalidSeed = errors.New("nkeys: invalid seed") + ErrInvalidEncoding = errors.New("nkeys: invalid encoded key") + ErrInvalidSignature = errors.New("nkeys: signature verification failed") + ErrCannotSign = errors.New("nkeys: can not sign, no private key available") + ErrPublicKeyOnly = errors.New("nkeys: no seed or private key available") +) + +// KeyPair provides the central interface to nkeys. +type KeyPair interface { + Seed() ([]byte, error) + PublicKey() (string, error) + PrivateKey() ([]byte, error) + Sign(input []byte) ([]byte, error) + Verify(input []byte, sig []byte) error + Wipe() +} + +// CreateUser will create a User typed KeyPair. +func CreateUser() (KeyPair, error) { + return CreatePair(PrefixByteUser) +} + +// CreateAccount will create an Account typed KeyPair. +func CreateAccount() (KeyPair, error) { + return CreatePair(PrefixByteAccount) +} + +// CreateServer will create a Server typed KeyPair. +func CreateServer() (KeyPair, error) { + return CreatePair(PrefixByteServer) +} + +// CreateCluster will create a Cluster typed KeyPair. +func CreateCluster() (KeyPair, error) { + return CreatePair(PrefixByteCluster) +} + +// CreateOperator will create an Operator typed KeyPair. +func CreateOperator() (KeyPair, error) { + return CreatePair(PrefixByteOperator) +} + +// FromPublicKey will create a KeyPair capable of verifying signatures. +func FromPublicKey(public string) (KeyPair, error) { + raw, err := decode([]byte(public)) + if err != nil { + return nil, err + } + pre := PrefixByte(raw[0]) + if err := checkValidPublicPrefixByte(pre); err != nil { + return nil, ErrInvalidPublicKey + } + return &pub{pre, raw[1:]}, nil +} + +// FromSeed will create a KeyPair capable of signing and verifying signatures. +func FromSeed(seed []byte) (KeyPair, error) { + _, _, err := DecodeSeed(seed) + if err != nil { + return nil, err + } + copy := append([]byte{}, seed...) + return &kp{copy}, nil +} + +// Create a KeyPair from the raw 32 byte seed for a given type. +func FromRawSeed(prefix PrefixByte, rawSeed []byte) (KeyPair, error) { + seed, err := EncodeSeed(prefix, rawSeed) + if err != nil { + return nil, err + } + return &kp{seed}, nil +} diff --git a/vendor/github.com/nats-io/nkeys/public.go b/vendor/github.com/nats-io/nkeys/public.go new file mode 100644 index 0000000..cb7927a --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/public.go @@ -0,0 +1,66 @@ +// Copyright 2018 The NATS Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nkeys + +import ( + "crypto/rand" + "io" + + "golang.org/x/crypto/ed25519" +) + +// A KeyPair from a public key capable of verifying only. +type pub struct { + pre PrefixByte + pub ed25519.PublicKey +} + +// PublicKey will return the encoded public key associated with the KeyPair. +// All KeyPairs have a public key. +func (p *pub) PublicKey() (string, error) { + pk, err := Encode(p.pre, p.pub) + if err != nil { + return "", err + } + return string(pk), nil +} + +// Seed will return an error since this is not available for public key only KeyPairs. +func (p *pub) Seed() ([]byte, error) { + return nil, ErrPublicKeyOnly +} + +// PrivateKey will return an error since this is not available for public key only KeyPairs. +func (p *pub) PrivateKey() ([]byte, error) { + return nil, ErrPublicKeyOnly +} + +// Sign will return an error since this is not available for public key only KeyPairs. +func (p *pub) Sign(input []byte) ([]byte, error) { + return nil, ErrCannotSign +} + +// Verify will verify the input against a signature utilizing the public key. +func (p *pub) Verify(input []byte, sig []byte) error { + if !ed25519.Verify(p.pub, input, sig) { + return ErrInvalidSignature + } + return nil +} + +// Wipe will randomize the public key and erase the pre byte. +func (p *pub) Wipe() { + p.pre = '0' + io.ReadFull(rand.Reader, p.pub) +} diff --git a/vendor/github.com/nats-io/nkeys/strkey.go b/vendor/github.com/nats-io/nkeys/strkey.go new file mode 100644 index 0000000..7a2ce98 --- /dev/null +++ b/vendor/github.com/nats-io/nkeys/strkey.go @@ -0,0 +1,290 @@ +// Copyright 2018 The NATS Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package nkeys + +import ( + "bytes" + "encoding/base32" + "encoding/binary" + + "golang.org/x/crypto/ed25519" +) + +// PrefixByte is a lead byte representing the type. +type PrefixByte byte + +const ( + // PrefixByteSeed is the version byte used for encoded NATS Seeds + PrefixByteSeed PrefixByte = 18 << 3 // Base32-encodes to 'S...' + + // PrefixBytePrivate is the version byte used for encoded NATS Private keys + PrefixBytePrivate PrefixByte = 15 << 3 // Base32-encodes to 'P...' + + // PrefixByteServer is the version byte used for encoded NATS Servers + PrefixByteServer PrefixByte = 13 << 3 // Base32-encodes to 'N...' + + // PrefixByteCluster is the version byte used for encoded NATS Clusters + PrefixByteCluster PrefixByte = 2 << 3 // Base32-encodes to 'C...' + + // PrefixByteOperator is the version byte used for encoded NATS Operators + PrefixByteOperator PrefixByte = 14 << 3 // Base32-encodes to 'O...' + + // PrefixByteAccount is the version byte used for encoded NATS Accounts + PrefixByteAccount PrefixByte = 0 // Base32-encodes to 'A...' + + // PrefixByteUser is the version byte used for encoded NATS Users + PrefixByteUser PrefixByte = 20 << 3 // Base32-encodes to 'U...' + + // PrefixByteUnknown is for unknown prefixes. + PrefixByteUknown PrefixByte = 23 << 3 // Base32-encodes to 'X...' +) + +// Set our encoding to not include padding '==' +var b32Enc = base32.StdEncoding.WithPadding(base32.NoPadding) + +// Encode will encode a raw key or seed with the prefix and crc16 and then base32 encoded. +func Encode(prefix PrefixByte, src []byte) ([]byte, error) { + if err := checkValidPrefixByte(prefix); err != nil { + return nil, err + } + + var raw bytes.Buffer + + // write prefix byte + if err := raw.WriteByte(byte(prefix)); err != nil { + return nil, err + } + + // write payload + if _, err := raw.Write(src); err != nil { + return nil, err + } + + // Calculate and write crc16 checksum + err := binary.Write(&raw, binary.LittleEndian, crc16(raw.Bytes())) + if err != nil { + return nil, err + } + + data := raw.Bytes() + buf := make([]byte, b32Enc.EncodedLen(len(data))) + b32Enc.Encode(buf, data) + return buf[:], nil +} + +// EncodeSeed will encode a raw key with the prefix and then seed prefix and crc16 and then base32 encoded. +func EncodeSeed(public PrefixByte, src []byte) ([]byte, error) { + if err := checkValidPublicPrefixByte(public); err != nil { + return nil, err + } + + if len(src) != ed25519.SeedSize { + return nil, ErrInvalidSeedLen + } + + // In order to make this human printable for both bytes, we need to do a little + // bit manipulation to setup for base32 encoding which takes 5 bits at a time. + b1 := byte(PrefixByteSeed) | (byte(public) >> 5) + b2 := (byte(public) & 31) << 3 // 31 = 00011111 + + var raw bytes.Buffer + + raw.WriteByte(b1) + raw.WriteByte(b2) + + // write payload + if _, err := raw.Write(src); err != nil { + return nil, err + } + + // Calculate and write crc16 checksum + err := binary.Write(&raw, binary.LittleEndian, crc16(raw.Bytes())) + if err != nil { + return nil, err + } + + data := raw.Bytes() + buf := make([]byte, b32Enc.EncodedLen(len(data))) + b32Enc.Encode(buf, data) + return buf, nil +} + +// IsValidEncoding will tell you if the encoding is a valid key. +func IsValidEncoding(src []byte) bool { + _, err := decode(src) + return err == nil +} + +// decode will decode the base32 and check crc16 and the prefix for validity. +func decode(src []byte) ([]byte, error) { + raw := make([]byte, b32Enc.EncodedLen(len(src))) + n, err := b32Enc.Decode(raw, src) + if err != nil { + return nil, err + } + raw = raw[:n] + + if len(raw) < 4 { + return nil, ErrInvalidEncoding + } + + var crc uint16 + checksum := bytes.NewReader(raw[len(raw)-2:]) + if err := binary.Read(checksum, binary.LittleEndian, &crc); err != nil { + return nil, err + } + + // ensure checksum is valid + if err := validate(raw[0:len(raw)-2], crc); err != nil { + return nil, err + } + + return raw[:len(raw)-2], nil +} + +// Decode will decode the base32 string and check crc16 and enforce the prefix is what is expected. +func Decode(expectedPrefix PrefixByte, src []byte) ([]byte, error) { + if err := checkValidPrefixByte(expectedPrefix); err != nil { + return nil, err + } + raw, err := decode(src) + if err != nil { + return nil, err + } + if prefix := PrefixByte(raw[0]); prefix != expectedPrefix { + return nil, ErrInvalidPrefixByte + } + return raw[1:], nil +} + +// DecodeSeed will decode the base32 string and check crc16 and enforce the prefix is a seed +// and the subsequent type is a valid type. +func DecodeSeed(src []byte) (PrefixByte, []byte, error) { + raw, err := decode(src) + if err != nil { + return PrefixByteSeed, nil, err + } + // Need to do the reverse here to get back to internal representation. + b1 := raw[0] & 248 // 248 = 11111000 + b2 := (raw[0]&7)<<5 | ((raw[1] & 248) >> 3) // 7 = 00000111 + + if PrefixByte(b1) != PrefixByteSeed { + return PrefixByteSeed, nil, ErrInvalidSeed + } + if checkValidPublicPrefixByte(PrefixByte(b2)) != nil { + return PrefixByteSeed, nil, ErrInvalidSeed + } + return PrefixByte(b2), raw[2:], nil +} + +func Prefix(src string) PrefixByte { + b, err := decode([]byte(src)) + if err != nil { + return PrefixByteUknown + } + prefix := PrefixByte(b[0]) + err = checkValidPrefixByte(prefix) + if err == nil { + return prefix + } + // Might be a seed. + b1 := b[0] & 248 + if PrefixByte(b1) == PrefixByteSeed { + return PrefixByteSeed + } + return PrefixByteUknown +} + +// IsValidPublicKey will decode and verify that the string is a valid encoded public key. +func IsValidPublicKey(src string) bool { + b, err := decode([]byte(src)) + if err != nil { + return false + } + if prefix := PrefixByte(b[0]); checkValidPublicPrefixByte(prefix) != nil { + return false + } + return true +} + +// IsValidPublicUserKey will decode and verify the string is a valid encoded Public User Key. +func IsValidPublicUserKey(src string) bool { + _, err := Decode(PrefixByteUser, []byte(src)) + return err == nil +} + +// IsValidPublicAccountKey will decode and verify the string is a valid encoded Public Account Key. +func IsValidPublicAccountKey(src string) bool { + _, err := Decode(PrefixByteAccount, []byte(src)) + return err == nil +} + +// IsValidPublicServerKey will decode and verify the string is a valid encoded Public Server Key. +func IsValidPublicServerKey(src string) bool { + _, err := Decode(PrefixByteServer, []byte(src)) + return err == nil +} + +// IsValidPublicClusterKey will decode and verify the string is a valid encoded Public Cluster Key. +func IsValidPublicClusterKey(src string) bool { + _, err := Decode(PrefixByteCluster, []byte(src)) + return err == nil +} + +// IsValidPublicOperatorKey will decode and verify the string is a valid encoded Public Operator Key. +func IsValidPublicOperatorKey(src string) bool { + _, err := Decode(PrefixByteOperator, []byte(src)) + return err == nil +} + +// checkValidPrefixByte returns an error if the provided value +// is not one of the defined valid prefix byte constants. +func checkValidPrefixByte(prefix PrefixByte) error { + switch prefix { + case PrefixByteOperator, PrefixByteServer, PrefixByteCluster, + PrefixByteAccount, PrefixByteUser, PrefixByteSeed, PrefixBytePrivate: + return nil + } + return ErrInvalidPrefixByte +} + +// checkValidPublicPrefixByte returns an error if the provided value +// is not one of the public defined valid prefix byte constants. +func checkValidPublicPrefixByte(prefix PrefixByte) error { + switch prefix { + case PrefixByteServer, PrefixByteCluster, PrefixByteOperator, PrefixByteAccount, PrefixByteUser: + return nil + } + return ErrInvalidPrefixByte +} + +func (p PrefixByte) String() string { + switch p { + case PrefixByteOperator: + return "operator" + case PrefixByteServer: + return "server" + case PrefixByteCluster: + return "cluster" + case PrefixByteAccount: + return "account" + case PrefixByteUser: + return "user" + case PrefixByteSeed: + return "seed" + case PrefixBytePrivate: + return "private" + } + return "unknown" +} diff --git a/vendor/github.com/openfaas-incubator/connector-sdk/types/controller.go b/vendor/github.com/openfaas-incubator/connector-sdk/types/controller.go index 4b6fa96..7efa63d 100644 --- a/vendor/github.com/openfaas-incubator/connector-sdk/types/controller.go +++ b/vendor/github.com/openfaas-incubator/connector-sdk/types/controller.go @@ -1,7 +1,9 @@ package types import ( + "fmt" "log" + "sync" "time" "github.com/openfaas/faas-provider/auth" @@ -9,36 +11,101 @@ import ( // ControllerConfig configures a connector SDK controller type ControllerConfig struct { + // UpstreamTimeout controls maximum timeout invoking a function via the gateway UpstreamTimeout time.Duration - GatewayURL string - PrintResponse bool + + // GatewayURL is the remote OpenFaaS gateway + GatewayURL string + + // PrintResponse if true prints the function responses + PrintResponse bool + + // PrintResponseBody if true prints the function response body to stdout + PrintResponseBody bool + + // RebuildInterval the interval at which the topic map is rebuilt RebuildInterval time.Duration + + // TopicAnnotationDelimiter defines the character upon which to split the Topic annotation value + TopicAnnotationDelimiter string + + // AsyncFunctionInvocation if true points to the asynchronous function route + AsyncFunctionInvocation bool } // Controller for the connector SDK type Controller struct { - Config *ControllerConfig - Invoker *Invoker - TopicMap *TopicMap + // Config for the Controller + Config *ControllerConfig + + // Invoker to invoke functions via HTTP(s) + Invoker *Invoker + + // Map of which functions subscribe to which topics + TopicMap *TopicMap + + // Credentials to access gateway Credentials *auth.BasicAuthCredentials + + // Subscribers which can receive messages from invocations. + // See note on ResponseSubscriber interface about blocking/long-running + // operations + Subscribers []ResponseSubscriber + + // Lock used for synchronizing subscribers + Lock *sync.RWMutex } // NewController create a new connector SDK controller func NewController(credentials *auth.BasicAuthCredentials, config *ControllerConfig) *Controller { - invoker := Invoker{ - PrintResponse: config.PrintResponse, - Client: MakeClient(config.UpstreamTimeout), - GatewayURL: config.GatewayURL, - } + gatewayFunctionPath := gatewayRoute(config) + + invoker := NewInvoker(gatewayFunctionPath, + MakeClient(config.UpstreamTimeout), + config.PrintResponse) + + subs := []ResponseSubscriber{} + topicMap := NewTopicMap() - return &Controller{ + controller := Controller{ Config: config, - Invoker: &invoker, + Invoker: invoker, TopicMap: &topicMap, Credentials: credentials, + Subscribers: subs, + Lock: &sync.RWMutex{}, + } + + if config.PrintResponse { + // printer := &{} + controller.Subscribe(&ResponsePrinter{config.PrintResponseBody}) } + + go func(ch *chan InvokerResponse, controller *Controller) { + for { + res := <-*ch + + controller.Lock.RLock() + for _, sub := range controller.Subscribers { + sub.Response(res) + } + controller.Lock.RUnlock() + } + }(&invoker.Responses, &controller) + + return &controller +} + +// Subscribe adds a ResponseSubscriber to the list of subscribers +// which receive messages upon function invocation or error +// Note: it is not possible to Unsubscribe at this point using +// the API of the Controller +func (c *Controller) Subscribe(subscriber ResponseSubscriber) { + c.Lock.Lock() + defer c.Lock.Unlock() + c.Subscribers = append(c.Subscribers, subscriber) } // Invoke attempts to invoke any functions which match the @@ -52,9 +119,10 @@ func (c *Controller) Invoke(topic string, message *[]byte) { func (c *Controller) BeginMapBuilder() { lookupBuilder := FunctionLookupBuilder{ - GatewayURL: c.Config.GatewayURL, - Client: MakeClient(c.Config.UpstreamTimeout), - Credentials: c.Credentials, + GatewayURL: c.Config.GatewayURL, + Client: MakeClient(c.Config.UpstreamTimeout), + Credentials: c.Credentials, + TopicDelimiter: c.Config.TopicAnnotationDelimiter, } ticker := time.NewTicker(c.Config.RebuildInterval) @@ -76,3 +144,16 @@ func synchronizeLookups(ticker *time.Ticker, topicMap.Sync(&lookups) } } + +// Topics gets the list of topics that functions have indicated should +// be used as triggers. +func (c *Controller) Topics() []string { + return c.TopicMap.Topics() +} + +func gatewayRoute(config *ControllerConfig) string { + if config.AsyncFunctionInvocation == true { + return fmt.Sprintf("%s/%s", config.GatewayURL, "async-function") + } + return fmt.Sprintf("%s/%s", config.GatewayURL, "function") +} diff --git a/vendor/github.com/openfaas-incubator/connector-sdk/types/function_list_builder.go b/vendor/github.com/openfaas-incubator/connector-sdk/types/function_list_builder.go index 0f4ffc1..9550489 100644 --- a/vendor/github.com/openfaas-incubator/connector-sdk/types/function_list_builder.go +++ b/vendor/github.com/openfaas-incubator/connector-sdk/types/function_list_builder.go @@ -8,6 +8,7 @@ import ( "fmt" "io/ioutil" "net/http" + "strings" "github.com/openfaas/faas-provider/auth" "github.com/openfaas/faas/gateway/requests" @@ -15,9 +16,10 @@ import ( // FunctionLookupBuilder builds a list of OpenFaaS functions type FunctionLookupBuilder struct { - GatewayURL string - Client *http.Client - Credentials *auth.BasicAuthCredentials + GatewayURL string + Client *http.Client + Credentials *auth.BasicAuthCredentials + TopicDelimiter string } // Build compiles a map of topic names and functions that have @@ -52,18 +54,40 @@ func (s *FunctionLookupBuilder) Build() (map[string][]string, error) { } for _, function := range functions { + if function.Annotations != nil { + annotations := *function.Annotations - if topic, pass := annotations["topic"]; pass { + if topicNames, exist := annotations["topic"]; exist { + + if len(s.TopicDelimiter) > 0 && strings.Count(topicNames, s.TopicDelimiter) > 0 { + + topicSlice := strings.Split(topicNames, s.TopicDelimiter) - if serviceMap[topic] == nil { - serviceMap[topic] = []string{} + for _, topic := range topicSlice { + serviceMap = appendServiceMap(topic, function.Name, serviceMap) + } + } else { + serviceMap = appendServiceMap(topicNames, function.Name, serviceMap) } - serviceMap[topic] = append(serviceMap[topic], function.Name) } } } - return serviceMap, err } + +func appendServiceMap(key string, function string, sm map[string][]string) map[string][]string { + + key = strings.TrimSpace(key) + + if len(key) > 0 { + + if sm[key] == nil { + sm[key] = []string{} + } + sm[key] = append(sm[key], function) + } + + return sm +} diff --git a/vendor/github.com/openfaas-incubator/connector-sdk/types/invoker.go b/vendor/github.com/openfaas-incubator/connector-sdk/types/invoker.go index 1170972..7946876 100644 --- a/vendor/github.com/openfaas-incubator/connector-sdk/types/invoker.go +++ b/vendor/github.com/openfaas-incubator/connector-sdk/types/invoker.go @@ -7,51 +7,70 @@ import ( "io/ioutil" "log" "net/http" + + "github.com/pkg/errors" ) type Invoker struct { PrintResponse bool Client *http.Client GatewayURL string + Responses chan InvokerResponse } -func (i *Invoker) Invoke(topicMap *TopicMap, topic string, message *[]byte) { - if len(*message) > 0 { - - matchedFunctions := topicMap.Match(topic) - for _, matchedFunction := range matchedFunctions { +type InvokerResponse struct { + Body *[]byte + Header *http.Header + Status int + Error error + Topic string + Function string +} - log.Printf("Invoke function: %s", matchedFunction) +func NewInvoker(gatewayURL string, client *http.Client, printResponse bool) *Invoker { + return &Invoker{ + PrintResponse: printResponse, + Client: client, + GatewayURL: gatewayURL, + Responses: make(chan InvokerResponse), + } +} - gwURL := fmt.Sprintf("%s/function/%s", i.GatewayURL, matchedFunction) - reader := bytes.NewReader(*message) +// Invoke triggers a function by accessing the API Gateway +func (i *Invoker) Invoke(topicMap *TopicMap, topic string, message *[]byte) { + if len(*message) == 0 { + i.Responses <- InvokerResponse{ + Error: fmt.Errorf("no message to send"), + } + } - body, statusCode, doErr := invokefunction(i.Client, gwURL, reader) + matchedFunctions := topicMap.Match(topic) + for _, matchedFunction := range matchedFunctions { + log.Printf("Invoke function: %s", matchedFunction) - if doErr != nil { - log.Printf("Unable to invoke from %s, error: %s\n", matchedFunction, doErr) - return - } + gwURL := fmt.Sprintf("%s/%s", i.GatewayURL, matchedFunction) + reader := bytes.NewReader(*message) - printBody := false - stringOutput := "" + body, statusCode, header, doErr := invokefunction(i.Client, gwURL, reader) - if body != nil && i.PrintResponse { - stringOutput = string(*body) - printBody = true + if doErr != nil { + i.Responses <- InvokerResponse{ + Error: errors.Wrap(doErr, fmt.Sprintf("unable to invoke %s", matchedFunction)), } + continue + } - if printBody { - log.Printf("Response [%d] from %s %s", statusCode, matchedFunction, stringOutput) - - } else { - log.Printf("Response [%d] from %s", statusCode, matchedFunction) - } + i.Responses <- InvokerResponse{ + Body: body, + Status: statusCode, + Header: header, + Function: matchedFunction, + Topic: topic, } } } -func invokefunction(c *http.Client, gwURL string, reader io.Reader) (*[]byte, int, error) { +func invokefunction(c *http.Client, gwURL string, reader io.Reader) (*[]byte, int, *http.Header, error) { httpReq, _ := http.NewRequest(http.MethodPost, gwURL, reader) @@ -63,7 +82,7 @@ func invokefunction(c *http.Client, gwURL string, reader io.Reader) (*[]byte, in res, doErr := c.Do(httpReq) if doErr != nil { - return nil, http.StatusServiceUnavailable, doErr + return nil, http.StatusServiceUnavailable, nil, doErr } if res.Body != nil { @@ -72,11 +91,11 @@ func invokefunction(c *http.Client, gwURL string, reader io.Reader) (*[]byte, in bytesOut, readErr := ioutil.ReadAll(res.Body) if readErr != nil { log.Printf("Error reading body") - return nil, http.StatusServiceUnavailable, doErr + return nil, http.StatusServiceUnavailable, nil, doErr } body = &bytesOut } - return body, res.StatusCode, doErr + return body, res.StatusCode, &res.Header, doErr } diff --git a/vendor/github.com/openfaas-incubator/connector-sdk/types/make_client.go b/vendor/github.com/openfaas-incubator/connector-sdk/types/make_client.go index a380f80..1355daa 100644 --- a/vendor/github.com/openfaas-incubator/connector-sdk/types/make_client.go +++ b/vendor/github.com/openfaas-incubator/connector-sdk/types/make_client.go @@ -6,11 +6,15 @@ import ( "time" ) +// MakeClient returns a http.Client with a timeout for connection establishing and request handling func MakeClient(timeout time.Duration) *http.Client { return &http.Client{ Transport: &http.Transport{ Proxy: http.ProxyFromEnvironment, DialContext: (&net.Dialer{ + // Timeout is the maximum amount of time a dial will wait for + // a connect to complete. If Deadline is also set, it may fail + // earlier. Timeout: timeout, KeepAlive: 10 * time.Second, }).DialContext, @@ -18,5 +22,11 @@ func MakeClient(timeout time.Duration) *http.Client { MaxIdleConnsPerHost: 100, IdleConnTimeout: 120 * time.Millisecond, }, + // Timeout specifies a time limit for requests made by this + // Client. The timeout includes connection time, any + // redirects, and reading the response body. The timer remains + // running after Get, Head, Post, or Do return and will + // interrupt reading of the Response.Body. + Timeout: timeout, } } diff --git a/vendor/github.com/openfaas-incubator/connector-sdk/types/response_printer.go b/vendor/github.com/openfaas-incubator/connector-sdk/types/response_printer.go new file mode 100644 index 0000000..37904a4 --- /dev/null +++ b/vendor/github.com/openfaas-incubator/connector-sdk/types/response_printer.go @@ -0,0 +1,24 @@ +package types + +import ( + "fmt" + "log" +) + +// ResponsePrinter prints function results +type ResponsePrinter struct { + PrintResponseBody bool +} + +// Response is triggered by the controller when a message is +// received from the function invocation +func (rp *ResponsePrinter) Response(res InvokerResponse) { + if res.Error != nil { + log.Printf("connector-sdk got error: %s", res.Error.Error()) + } else { + log.Printf("connector-sdk got result: [%d] %s => %s (%d) bytes", res.Status, res.Topic, res.Function, len(*res.Body)) + if rp.PrintResponseBody { + fmt.Printf("[%d] %s => %s\n%s\n", res.Status, res.Topic, res.Function, string(*res.Body)) + } + } +} diff --git a/vendor/github.com/openfaas-incubator/connector-sdk/types/response_subscriber.go b/vendor/github.com/openfaas-incubator/connector-sdk/types/response_subscriber.go new file mode 100644 index 0000000..c313701 --- /dev/null +++ b/vendor/github.com/openfaas-incubator/connector-sdk/types/response_subscriber.go @@ -0,0 +1,12 @@ +package types + +// ResponseSubscriber enables connector or another client in connector +// to receive results from the function invocation. +// Note: when implementing this interface, you must not perform any +// costly or high-latency operations, or should off-load them to another +// go-routine to prevent blocking. +type ResponseSubscriber interface { + // Response is triggered by the controller when a message is + // received from the function invocation + Response(InvokerResponse) +} diff --git a/vendor/github.com/openfaas-incubator/connector-sdk/types/topic_map.go b/vendor/github.com/openfaas-incubator/connector-sdk/types/topic_map.go index 75ac2d2..bf56f0f 100644 --- a/vendor/github.com/openfaas-incubator/connector-sdk/types/topic_map.go +++ b/vendor/github.com/openfaas-incubator/connector-sdk/types/topic_map.go @@ -3,27 +3,24 @@ package types -import ( - "log" - "sync" -) +import "sync" func NewTopicMap() TopicMap { lookup := make(map[string][]string) return TopicMap{ lookup: &lookup, - lock: sync.Mutex{}, + lock: sync.RWMutex{}, } } type TopicMap struct { lookup *map[string][]string - lock sync.Mutex + lock sync.RWMutex } func (t *TopicMap) Match(topicName string) []string { - t.lock.Lock() - defer t.lock.Unlock() + t.lock.RLock() + defer t.lock.RUnlock() var values []string @@ -41,6 +38,17 @@ func (t *TopicMap) Sync(updated *map[string][]string) { t.lock.Lock() defer t.lock.Unlock() - log.Printf("topics: %#v", *t.lookup) t.lookup = updated } + +func (t *TopicMap) Topics() []string { + t.lock.RLock() + defer t.lock.RUnlock() + + topics := make([]string, 0, len(*t.lookup)) + for topic := range *t.lookup { + topics = append(topics, topic) + } + + return topics +} diff --git a/vendor/github.com/pkg/errors/.gitignore b/vendor/github.com/pkg/errors/.gitignore new file mode 100644 index 0000000..daf913b --- /dev/null +++ b/vendor/github.com/pkg/errors/.gitignore @@ -0,0 +1,24 @@ +# Compiled Object files, Static and Dynamic libs (Shared Objects) +*.o +*.a +*.so + +# Folders +_obj +_test + +# Architecture specific extensions/prefixes +*.[568vq] +[568vq].out + +*.cgo1.go +*.cgo2.c +_cgo_defun.c +_cgo_gotypes.go +_cgo_export.* + +_testmain.go + +*.exe +*.test +*.prof diff --git a/vendor/github.com/pkg/errors/.travis.yml b/vendor/github.com/pkg/errors/.travis.yml new file mode 100644 index 0000000..d4b9266 --- /dev/null +++ b/vendor/github.com/pkg/errors/.travis.yml @@ -0,0 +1,15 @@ +language: go +go_import_path: github.com/pkg/errors +go: + - 1.4.x + - 1.5.x + - 1.6.x + - 1.7.x + - 1.8.x + - 1.9.x + - 1.10.x + - 1.11.x + - tip + +script: + - go test -v ./... diff --git a/vendor/github.com/pkg/errors/LICENSE b/vendor/github.com/pkg/errors/LICENSE new file mode 100644 index 0000000..835ba3e --- /dev/null +++ b/vendor/github.com/pkg/errors/LICENSE @@ -0,0 +1,23 @@ +Copyright (c) 2015, Dave Cheney +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/github.com/pkg/errors/README.md b/vendor/github.com/pkg/errors/README.md new file mode 100644 index 0000000..6483ba2 --- /dev/null +++ b/vendor/github.com/pkg/errors/README.md @@ -0,0 +1,52 @@ +# errors [![Travis-CI](https://travis-ci.org/pkg/errors.svg)](https://travis-ci.org/pkg/errors) [![AppVeyor](https://ci.appveyor.com/api/projects/status/b98mptawhudj53ep/branch/master?svg=true)](https://ci.appveyor.com/project/davecheney/errors/branch/master) [![GoDoc](https://godoc.org/github.com/pkg/errors?status.svg)](http://godoc.org/github.com/pkg/errors) [![Report card](https://goreportcard.com/badge/github.com/pkg/errors)](https://goreportcard.com/report/github.com/pkg/errors) [![Sourcegraph](https://sourcegraph.com/github.com/pkg/errors/-/badge.svg)](https://sourcegraph.com/github.com/pkg/errors?badge) + +Package errors provides simple error handling primitives. + +`go get github.com/pkg/errors` + +The traditional error handling idiom in Go is roughly akin to +```go +if err != nil { + return err +} +``` +which applied recursively up the call stack results in error reports without context or debugging information. The errors package allows programmers to add context to the failure path in their code in a way that does not destroy the original value of the error. + +## Adding context to an error + +The errors.Wrap function returns a new error that adds context to the original error. For example +```go +_, err := ioutil.ReadAll(r) +if err != nil { + return errors.Wrap(err, "read failed") +} +``` +## Retrieving the cause of an error + +Using `errors.Wrap` constructs a stack of errors, adding context to the preceding error. Depending on the nature of the error it may be necessary to reverse the operation of errors.Wrap to retrieve the original error for inspection. Any error value which implements this interface can be inspected by `errors.Cause`. +```go +type causer interface { + Cause() error +} +``` +`errors.Cause` will recursively retrieve the topmost error which does not implement `causer`, which is assumed to be the original cause. For example: +```go +switch err := errors.Cause(err).(type) { +case *MyError: + // handle specifically +default: + // unknown error +} +``` + +[Read the package documentation for more information](https://godoc.org/github.com/pkg/errors). + +## Contributing + +We welcome pull requests, bug fixes and issue reports. With that said, the bar for adding new symbols to this package is intentionally set high. + +Before proposing a change, please discuss your change by raising an issue. + +## License + +BSD-2-Clause diff --git a/vendor/github.com/pkg/errors/appveyor.yml b/vendor/github.com/pkg/errors/appveyor.yml new file mode 100644 index 0000000..a932ead --- /dev/null +++ b/vendor/github.com/pkg/errors/appveyor.yml @@ -0,0 +1,32 @@ +version: build-{build}.{branch} + +clone_folder: C:\gopath\src\github.com\pkg\errors +shallow_clone: true # for startup speed + +environment: + GOPATH: C:\gopath + +platform: + - x64 + +# http://www.appveyor.com/docs/installed-software +install: + # some helpful output for debugging builds + - go version + - go env + # pre-installed MinGW at C:\MinGW is 32bit only + # but MSYS2 at C:\msys64 has mingw64 + - set PATH=C:\msys64\mingw64\bin;%PATH% + - gcc --version + - g++ --version + +build_script: + - go install -v ./... + +test_script: + - set PATH=C:\gopath\bin;%PATH% + - go test -v ./... + +#artifacts: +# - path: '%GOPATH%\bin\*.exe' +deploy: off diff --git a/vendor/github.com/pkg/errors/errors.go b/vendor/github.com/pkg/errors/errors.go new file mode 100644 index 0000000..7421f32 --- /dev/null +++ b/vendor/github.com/pkg/errors/errors.go @@ -0,0 +1,282 @@ +// Package errors provides simple error handling primitives. +// +// The traditional error handling idiom in Go is roughly akin to +// +// if err != nil { +// return err +// } +// +// which when applied recursively up the call stack results in error reports +// without context or debugging information. The errors package allows +// programmers to add context to the failure path in their code in a way +// that does not destroy the original value of the error. +// +// Adding context to an error +// +// The errors.Wrap function returns a new error that adds context to the +// original error by recording a stack trace at the point Wrap is called, +// together with the supplied message. For example +// +// _, err := ioutil.ReadAll(r) +// if err != nil { +// return errors.Wrap(err, "read failed") +// } +// +// If additional control is required, the errors.WithStack and +// errors.WithMessage functions destructure errors.Wrap into its component +// operations: annotating an error with a stack trace and with a message, +// respectively. +// +// Retrieving the cause of an error +// +// Using errors.Wrap constructs a stack of errors, adding context to the +// preceding error. Depending on the nature of the error it may be necessary +// to reverse the operation of errors.Wrap to retrieve the original error +// for inspection. Any error value which implements this interface +// +// type causer interface { +// Cause() error +// } +// +// can be inspected by errors.Cause. errors.Cause will recursively retrieve +// the topmost error that does not implement causer, which is assumed to be +// the original cause. For example: +// +// switch err := errors.Cause(err).(type) { +// case *MyError: +// // handle specifically +// default: +// // unknown error +// } +// +// Although the causer interface is not exported by this package, it is +// considered a part of its stable public interface. +// +// Formatted printing of errors +// +// All error values returned from this package implement fmt.Formatter and can +// be formatted by the fmt package. The following verbs are supported: +// +// %s print the error. If the error has a Cause it will be +// printed recursively. +// %v see %s +// %+v extended format. Each Frame of the error's StackTrace will +// be printed in detail. +// +// Retrieving the stack trace of an error or wrapper +// +// New, Errorf, Wrap, and Wrapf record a stack trace at the point they are +// invoked. This information can be retrieved with the following interface: +// +// type stackTracer interface { +// StackTrace() errors.StackTrace +// } +// +// The returned errors.StackTrace type is defined as +// +// type StackTrace []Frame +// +// The Frame type represents a call site in the stack trace. Frame supports +// the fmt.Formatter interface that can be used for printing information about +// the stack trace of this error. For example: +// +// if err, ok := err.(stackTracer); ok { +// for _, f := range err.StackTrace() { +// fmt.Printf("%+s:%d", f) +// } +// } +// +// Although the stackTracer interface is not exported by this package, it is +// considered a part of its stable public interface. +// +// See the documentation for Frame.Format for more details. +package errors + +import ( + "fmt" + "io" +) + +// New returns an error with the supplied message. +// New also records the stack trace at the point it was called. +func New(message string) error { + return &fundamental{ + msg: message, + stack: callers(), + } +} + +// Errorf formats according to a format specifier and returns the string +// as a value that satisfies error. +// Errorf also records the stack trace at the point it was called. +func Errorf(format string, args ...interface{}) error { + return &fundamental{ + msg: fmt.Sprintf(format, args...), + stack: callers(), + } +} + +// fundamental is an error that has a message and a stack, but no caller. +type fundamental struct { + msg string + *stack +} + +func (f *fundamental) Error() string { return f.msg } + +func (f *fundamental) Format(s fmt.State, verb rune) { + switch verb { + case 'v': + if s.Flag('+') { + io.WriteString(s, f.msg) + f.stack.Format(s, verb) + return + } + fallthrough + case 's': + io.WriteString(s, f.msg) + case 'q': + fmt.Fprintf(s, "%q", f.msg) + } +} + +// WithStack annotates err with a stack trace at the point WithStack was called. +// If err is nil, WithStack returns nil. +func WithStack(err error) error { + if err == nil { + return nil + } + return &withStack{ + err, + callers(), + } +} + +type withStack struct { + error + *stack +} + +func (w *withStack) Cause() error { return w.error } + +func (w *withStack) Format(s fmt.State, verb rune) { + switch verb { + case 'v': + if s.Flag('+') { + fmt.Fprintf(s, "%+v", w.Cause()) + w.stack.Format(s, verb) + return + } + fallthrough + case 's': + io.WriteString(s, w.Error()) + case 'q': + fmt.Fprintf(s, "%q", w.Error()) + } +} + +// Wrap returns an error annotating err with a stack trace +// at the point Wrap is called, and the supplied message. +// If err is nil, Wrap returns nil. +func Wrap(err error, message string) error { + if err == nil { + return nil + } + err = &withMessage{ + cause: err, + msg: message, + } + return &withStack{ + err, + callers(), + } +} + +// Wrapf returns an error annotating err with a stack trace +// at the point Wrapf is called, and the format specifier. +// If err is nil, Wrapf returns nil. +func Wrapf(err error, format string, args ...interface{}) error { + if err == nil { + return nil + } + err = &withMessage{ + cause: err, + msg: fmt.Sprintf(format, args...), + } + return &withStack{ + err, + callers(), + } +} + +// WithMessage annotates err with a new message. +// If err is nil, WithMessage returns nil. +func WithMessage(err error, message string) error { + if err == nil { + return nil + } + return &withMessage{ + cause: err, + msg: message, + } +} + +// WithMessagef annotates err with the format specifier. +// If err is nil, WithMessagef returns nil. +func WithMessagef(err error, format string, args ...interface{}) error { + if err == nil { + return nil + } + return &withMessage{ + cause: err, + msg: fmt.Sprintf(format, args...), + } +} + +type withMessage struct { + cause error + msg string +} + +func (w *withMessage) Error() string { return w.msg + ": " + w.cause.Error() } +func (w *withMessage) Cause() error { return w.cause } + +func (w *withMessage) Format(s fmt.State, verb rune) { + switch verb { + case 'v': + if s.Flag('+') { + fmt.Fprintf(s, "%+v\n", w.Cause()) + io.WriteString(s, w.msg) + return + } + fallthrough + case 's', 'q': + io.WriteString(s, w.Error()) + } +} + +// Cause returns the underlying cause of the error, if possible. +// An error value has a cause if it implements the following +// interface: +// +// type causer interface { +// Cause() error +// } +// +// If the error does not implement Cause, the original error will +// be returned. If the error is nil, nil will be returned without further +// investigation. +func Cause(err error) error { + type causer interface { + Cause() error + } + + for err != nil { + cause, ok := err.(causer) + if !ok { + break + } + err = cause.Cause() + } + return err +} diff --git a/vendor/github.com/pkg/errors/stack.go b/vendor/github.com/pkg/errors/stack.go new file mode 100644 index 0000000..2874a04 --- /dev/null +++ b/vendor/github.com/pkg/errors/stack.go @@ -0,0 +1,147 @@ +package errors + +import ( + "fmt" + "io" + "path" + "runtime" + "strings" +) + +// Frame represents a program counter inside a stack frame. +type Frame uintptr + +// pc returns the program counter for this frame; +// multiple frames may have the same PC value. +func (f Frame) pc() uintptr { return uintptr(f) - 1 } + +// file returns the full path to the file that contains the +// function for this Frame's pc. +func (f Frame) file() string { + fn := runtime.FuncForPC(f.pc()) + if fn == nil { + return "unknown" + } + file, _ := fn.FileLine(f.pc()) + return file +} + +// line returns the line number of source code of the +// function for this Frame's pc. +func (f Frame) line() int { + fn := runtime.FuncForPC(f.pc()) + if fn == nil { + return 0 + } + _, line := fn.FileLine(f.pc()) + return line +} + +// Format formats the frame according to the fmt.Formatter interface. +// +// %s source file +// %d source line +// %n function name +// %v equivalent to %s:%d +// +// Format accepts flags that alter the printing of some verbs, as follows: +// +// %+s function name and path of source file relative to the compile time +// GOPATH separated by \n\t (\n\t) +// %+v equivalent to %+s:%d +func (f Frame) Format(s fmt.State, verb rune) { + switch verb { + case 's': + switch { + case s.Flag('+'): + pc := f.pc() + fn := runtime.FuncForPC(pc) + if fn == nil { + io.WriteString(s, "unknown") + } else { + file, _ := fn.FileLine(pc) + fmt.Fprintf(s, "%s\n\t%s", fn.Name(), file) + } + default: + io.WriteString(s, path.Base(f.file())) + } + case 'd': + fmt.Fprintf(s, "%d", f.line()) + case 'n': + name := runtime.FuncForPC(f.pc()).Name() + io.WriteString(s, funcname(name)) + case 'v': + f.Format(s, 's') + io.WriteString(s, ":") + f.Format(s, 'd') + } +} + +// StackTrace is stack of Frames from innermost (newest) to outermost (oldest). +type StackTrace []Frame + +// Format formats the stack of Frames according to the fmt.Formatter interface. +// +// %s lists source files for each Frame in the stack +// %v lists the source file and line number for each Frame in the stack +// +// Format accepts flags that alter the printing of some verbs, as follows: +// +// %+v Prints filename, function, and line number for each Frame in the stack. +func (st StackTrace) Format(s fmt.State, verb rune) { + switch verb { + case 'v': + switch { + case s.Flag('+'): + for _, f := range st { + fmt.Fprintf(s, "\n%+v", f) + } + case s.Flag('#'): + fmt.Fprintf(s, "%#v", []Frame(st)) + default: + fmt.Fprintf(s, "%v", []Frame(st)) + } + case 's': + fmt.Fprintf(s, "%s", []Frame(st)) + } +} + +// stack represents a stack of program counters. +type stack []uintptr + +func (s *stack) Format(st fmt.State, verb rune) { + switch verb { + case 'v': + switch { + case st.Flag('+'): + for _, pc := range *s { + f := Frame(pc) + fmt.Fprintf(st, "\n%+v", f) + } + } + } +} + +func (s *stack) StackTrace() StackTrace { + f := make([]Frame, len(*s)) + for i := 0; i < len(f); i++ { + f[i] = Frame((*s)[i]) + } + return f +} + +func callers() *stack { + const depth = 32 + var pcs [depth]uintptr + n := runtime.Callers(3, pcs[:]) + var st stack = pcs[0:n] + return &st +} + +// funcname removes the path prefix component of a function's name reported by func.Name(). +func funcname(name string) string { + i := strings.LastIndex(name, "/") + name = name[i+1:] + i = strings.Index(name, ".") + return name[i+1:] +} diff --git a/vendor/golang.org/x/crypto/AUTHORS b/vendor/golang.org/x/crypto/AUTHORS new file mode 100644 index 0000000..2b00ddb --- /dev/null +++ b/vendor/golang.org/x/crypto/AUTHORS @@ -0,0 +1,3 @@ +# This source code refers to The Go Authors for copyright purposes. +# The master list of authors is in the main Go distribution, +# visible at https://tip.golang.org/AUTHORS. diff --git a/vendor/golang.org/x/crypto/CONTRIBUTORS b/vendor/golang.org/x/crypto/CONTRIBUTORS new file mode 100644 index 0000000..1fbd3e9 --- /dev/null +++ b/vendor/golang.org/x/crypto/CONTRIBUTORS @@ -0,0 +1,3 @@ +# This source code was written by the Go contributors. +# The master list of contributors is in the main Go distribution, +# visible at https://tip.golang.org/CONTRIBUTORS. diff --git a/vendor/golang.org/x/crypto/LICENSE b/vendor/golang.org/x/crypto/LICENSE new file mode 100644 index 0000000..6a66aea --- /dev/null +++ b/vendor/golang.org/x/crypto/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/golang.org/x/crypto/PATENTS b/vendor/golang.org/x/crypto/PATENTS new file mode 100644 index 0000000..7330990 --- /dev/null +++ b/vendor/golang.org/x/crypto/PATENTS @@ -0,0 +1,22 @@ +Additional IP Rights Grant (Patents) + +"This implementation" means the copyrightable works distributed by +Google as part of the Go project. + +Google hereby grants to You a perpetual, worldwide, non-exclusive, +no-charge, royalty-free, irrevocable (except as stated in this section) +patent license to make, have made, use, offer to sell, sell, import, +transfer and otherwise run, modify and propagate the contents of this +implementation of Go, where such license applies only to those patent +claims, both currently owned or controlled by Google and acquired in +the future, licensable by Google that are necessarily infringed by this +implementation of Go. This grant does not include claims that would be +infringed only as a consequence of further modification of this +implementation. If you or your agent or exclusive licensee institute or +order or agree to the institution of patent litigation against any +entity (including a cross-claim or counterclaim in a lawsuit) alleging +that this implementation of Go or any code incorporated within this +implementation of Go constitutes direct or contributory patent +infringement, or inducement of patent infringement, then any patent +rights granted to you under this License for this implementation of Go +shall terminate as of the date such litigation is filed. diff --git a/vendor/golang.org/x/crypto/ed25519/ed25519.go b/vendor/golang.org/x/crypto/ed25519/ed25519.go new file mode 100644 index 0000000..d6f683b --- /dev/null +++ b/vendor/golang.org/x/crypto/ed25519/ed25519.go @@ -0,0 +1,217 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package ed25519 implements the Ed25519 signature algorithm. See +// https://ed25519.cr.yp.to/. +// +// These functions are also compatible with the “Ed25519” function defined in +// RFC 8032. However, unlike RFC 8032's formulation, this package's private key +// representation includes a public key suffix to make multiple signing +// operations with the same key more efficient. This package refers to the RFC +// 8032 private key as the “seed”. +package ed25519 + +// This code is a port of the public domain, “ref10” implementation of ed25519 +// from SUPERCOP. + +import ( + "bytes" + "crypto" + cryptorand "crypto/rand" + "crypto/sha512" + "errors" + "io" + "strconv" + + "golang.org/x/crypto/ed25519/internal/edwards25519" +) + +const ( + // PublicKeySize is the size, in bytes, of public keys as used in this package. + PublicKeySize = 32 + // PrivateKeySize is the size, in bytes, of private keys as used in this package. + PrivateKeySize = 64 + // SignatureSize is the size, in bytes, of signatures generated and verified by this package. + SignatureSize = 64 + // SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032. + SeedSize = 32 +) + +// PublicKey is the type of Ed25519 public keys. +type PublicKey []byte + +// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer. +type PrivateKey []byte + +// Public returns the PublicKey corresponding to priv. +func (priv PrivateKey) Public() crypto.PublicKey { + publicKey := make([]byte, PublicKeySize) + copy(publicKey, priv[32:]) + return PublicKey(publicKey) +} + +// Seed returns the private key seed corresponding to priv. It is provided for +// interoperability with RFC 8032. RFC 8032's private keys correspond to seeds +// in this package. +func (priv PrivateKey) Seed() []byte { + seed := make([]byte, SeedSize) + copy(seed, priv[:32]) + return seed +} + +// Sign signs the given message with priv. +// Ed25519 performs two passes over messages to be signed and therefore cannot +// handle pre-hashed messages. Thus opts.HashFunc() must return zero to +// indicate the message hasn't been hashed. This can be achieved by passing +// crypto.Hash(0) as the value for opts. +func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) { + if opts.HashFunc() != crypto.Hash(0) { + return nil, errors.New("ed25519: cannot sign hashed message") + } + + return Sign(priv, message), nil +} + +// GenerateKey generates a public/private key pair using entropy from rand. +// If rand is nil, crypto/rand.Reader will be used. +func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) { + if rand == nil { + rand = cryptorand.Reader + } + + seed := make([]byte, SeedSize) + if _, err := io.ReadFull(rand, seed); err != nil { + return nil, nil, err + } + + privateKey := NewKeyFromSeed(seed) + publicKey := make([]byte, PublicKeySize) + copy(publicKey, privateKey[32:]) + + return publicKey, privateKey, nil +} + +// NewKeyFromSeed calculates a private key from a seed. It will panic if +// len(seed) is not SeedSize. This function is provided for interoperability +// with RFC 8032. RFC 8032's private keys correspond to seeds in this +// package. +func NewKeyFromSeed(seed []byte) PrivateKey { + if l := len(seed); l != SeedSize { + panic("ed25519: bad seed length: " + strconv.Itoa(l)) + } + + digest := sha512.Sum512(seed) + digest[0] &= 248 + digest[31] &= 127 + digest[31] |= 64 + + var A edwards25519.ExtendedGroupElement + var hBytes [32]byte + copy(hBytes[:], digest[:]) + edwards25519.GeScalarMultBase(&A, &hBytes) + var publicKeyBytes [32]byte + A.ToBytes(&publicKeyBytes) + + privateKey := make([]byte, PrivateKeySize) + copy(privateKey, seed) + copy(privateKey[32:], publicKeyBytes[:]) + + return privateKey +} + +// Sign signs the message with privateKey and returns a signature. It will +// panic if len(privateKey) is not PrivateKeySize. +func Sign(privateKey PrivateKey, message []byte) []byte { + if l := len(privateKey); l != PrivateKeySize { + panic("ed25519: bad private key length: " + strconv.Itoa(l)) + } + + h := sha512.New() + h.Write(privateKey[:32]) + + var digest1, messageDigest, hramDigest [64]byte + var expandedSecretKey [32]byte + h.Sum(digest1[:0]) + copy(expandedSecretKey[:], digest1[:]) + expandedSecretKey[0] &= 248 + expandedSecretKey[31] &= 63 + expandedSecretKey[31] |= 64 + + h.Reset() + h.Write(digest1[32:]) + h.Write(message) + h.Sum(messageDigest[:0]) + + var messageDigestReduced [32]byte + edwards25519.ScReduce(&messageDigestReduced, &messageDigest) + var R edwards25519.ExtendedGroupElement + edwards25519.GeScalarMultBase(&R, &messageDigestReduced) + + var encodedR [32]byte + R.ToBytes(&encodedR) + + h.Reset() + h.Write(encodedR[:]) + h.Write(privateKey[32:]) + h.Write(message) + h.Sum(hramDigest[:0]) + var hramDigestReduced [32]byte + edwards25519.ScReduce(&hramDigestReduced, &hramDigest) + + var s [32]byte + edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced) + + signature := make([]byte, SignatureSize) + copy(signature[:], encodedR[:]) + copy(signature[32:], s[:]) + + return signature +} + +// Verify reports whether sig is a valid signature of message by publicKey. It +// will panic if len(publicKey) is not PublicKeySize. +func Verify(publicKey PublicKey, message, sig []byte) bool { + if l := len(publicKey); l != PublicKeySize { + panic("ed25519: bad public key length: " + strconv.Itoa(l)) + } + + if len(sig) != SignatureSize || sig[63]&224 != 0 { + return false + } + + var A edwards25519.ExtendedGroupElement + var publicKeyBytes [32]byte + copy(publicKeyBytes[:], publicKey) + if !A.FromBytes(&publicKeyBytes) { + return false + } + edwards25519.FeNeg(&A.X, &A.X) + edwards25519.FeNeg(&A.T, &A.T) + + h := sha512.New() + h.Write(sig[:32]) + h.Write(publicKey[:]) + h.Write(message) + var digest [64]byte + h.Sum(digest[:0]) + + var hReduced [32]byte + edwards25519.ScReduce(&hReduced, &digest) + + var R edwards25519.ProjectiveGroupElement + var s [32]byte + copy(s[:], sig[32:]) + + // https://tools.ietf.org/html/rfc8032#section-5.1.7 requires that s be in + // the range [0, order) in order to prevent signature malleability. + if !edwards25519.ScMinimal(&s) { + return false + } + + edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &s) + + var checkR [32]byte + R.ToBytes(&checkR) + return bytes.Equal(sig[:32], checkR[:]) +} diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go new file mode 100644 index 0000000..e39f086 --- /dev/null +++ b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go @@ -0,0 +1,1422 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package edwards25519 + +// These values are from the public domain, “ref10” implementation of ed25519 +// from SUPERCOP. + +// d is a constant in the Edwards curve equation. +var d = FieldElement{ + -10913610, 13857413, -15372611, 6949391, 114729, -8787816, -6275908, -3247719, -18696448, -12055116, +} + +// d2 is 2*d. +var d2 = FieldElement{ + -21827239, -5839606, -30745221, 13898782, 229458, 15978800, -12551817, -6495438, 29715968, 9444199, +} + +// SqrtM1 is the square-root of -1 in the field. +var SqrtM1 = FieldElement{ + -32595792, -7943725, 9377950, 3500415, 12389472, -272473, -25146209, -2005654, 326686, 11406482, +} + +// A is a constant in the Montgomery-form of curve25519. +var A = FieldElement{ + 486662, 0, 0, 0, 0, 0, 0, 0, 0, 0, +} + +// bi contains precomputed multiples of the base-point. See the Ed25519 paper +// for a discussion about how these values are used. +var bi = [8]PreComputedGroupElement{ + { + FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605}, + FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378}, + FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546}, + }, + { + FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024}, + FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574}, + FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357}, + }, + { + FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380}, + FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306}, + FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942}, + }, + { + FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766}, + FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701}, + FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300}, + }, + { + FieldElement{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877}, + FieldElement{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951}, + FieldElement{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784}, + }, + { + FieldElement{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436}, + FieldElement{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918}, + FieldElement{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877}, + }, + { + FieldElement{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800}, + FieldElement{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305}, + FieldElement{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300}, + }, + { + FieldElement{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876}, + FieldElement{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619}, + FieldElement{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683}, + }, +} + +// base contains precomputed multiples of the base-point. See the Ed25519 paper +// for a discussion about how these values are used. +var base = [32][8]PreComputedGroupElement{ + { + { + FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605}, + FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378}, + FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546}, + }, + { + FieldElement{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303}, + FieldElement{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081}, + FieldElement{26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697}, + }, + { + FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024}, + FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574}, + FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357}, + }, + { + FieldElement{-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540}, + FieldElement{23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397}, + FieldElement{7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325}, + }, + { + FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380}, + FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306}, + FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942}, + }, + { + FieldElement{-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777}, + FieldElement{-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737}, + FieldElement{-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652}, + }, + { + FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766}, + FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701}, + FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300}, + }, + { + FieldElement{14499471, -2729599, -33191113, -4254652, 28494862, 14271267, 30290735, 10876454, -33154098, 2381726}, + FieldElement{-7195431, -2655363, -14730155, 462251, -27724326, 3941372, -6236617, 3696005, -32300832, 15351955}, + FieldElement{27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425}, + }, + }, + { + { + FieldElement{-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171}, + FieldElement{27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510}, + FieldElement{17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660}, + }, + { + FieldElement{-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639}, + FieldElement{29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963}, + FieldElement{5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950}, + }, + { + FieldElement{-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568}, + FieldElement{12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335}, + FieldElement{25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628}, + }, + { + FieldElement{-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007}, + FieldElement{-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772}, + FieldElement{-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653}, + }, + { + FieldElement{2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567}, + FieldElement{13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686}, + FieldElement{21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372}, + }, + { + FieldElement{-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887}, + FieldElement{-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954}, + FieldElement{-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953}, + }, + { + FieldElement{24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833}, + FieldElement{-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532}, + FieldElement{-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876}, + }, + { + FieldElement{2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268}, + FieldElement{33431127, -11130478, -17838966, -15626900, 8909499, 8376530, -32625340, 4087881, -15188911, -14416214}, + FieldElement{1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038}, + }, + }, + { + { + FieldElement{6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800}, + FieldElement{4409041, 2052381, 23373853, 10530217, 7676779, -12885954, 21302353, -4264057, 1244380, -12919645}, + FieldElement{-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413, 9208236, 15886429, 16489664}, + }, + { + FieldElement{1996075, 10375649, 14346367, 13311202, -6874135, -16438411, -13693198, 398369, -30606455, -712933}, + FieldElement{-25307465, 9795880, -2777414, 14878809, -33531835, 14780363, 13348553, 12076947, -30836462, 5113182}, + FieldElement{-17770784, 11797796, 31950843, 13929123, -25888302, 12288344, -30341101, -7336386, 13847711, 5387222}, + }, + { + FieldElement{-18582163, -3416217, 17824843, -2340966, 22744343, -10442611, 8763061, 3617786, -19600662, 10370991}, + FieldElement{20246567, -14369378, 22358229, -543712, 18507283, -10413996, 14554437, -8746092, 32232924, 16763880}, + FieldElement{9648505, 10094563, 26416693, 14745928, -30374318, -6472621, 11094161, 15689506, 3140038, -16510092}, + }, + { + FieldElement{-16160072, 5472695, 31895588, 4744994, 8823515, 10365685, -27224800, 9448613, -28774454, 366295}, + FieldElement{19153450, 11523972, -11096490, -6503142, -24647631, 5420647, 28344573, 8041113, 719605, 11671788}, + FieldElement{8678025, 2694440, -6808014, 2517372, 4964326, 11152271, -15432916, -15266516, 27000813, -10195553}, + }, + { + FieldElement{-15157904, 7134312, 8639287, -2814877, -7235688, 10421742, 564065, 5336097, 6750977, -14521026}, + FieldElement{11836410, -3979488, 26297894, 16080799, 23455045, 15735944, 1695823, -8819122, 8169720, 16220347}, + FieldElement{-18115838, 8653647, 17578566, -6092619, -8025777, -16012763, -11144307, -2627664, -5990708, -14166033}, + }, + { + FieldElement{-23308498, -10968312, 15213228, -10081214, -30853605, -11050004, 27884329, 2847284, 2655861, 1738395}, + FieldElement{-27537433, -14253021, -25336301, -8002780, -9370762, 8129821, 21651608, -3239336, -19087449, -11005278}, + FieldElement{1533110, 3437855, 23735889, 459276, 29970501, 11335377, 26030092, 5821408, 10478196, 8544890}, + }, + { + FieldElement{32173121, -16129311, 24896207, 3921497, 22579056, -3410854, 19270449, 12217473, 17789017, -3395995}, + FieldElement{-30552961, -2228401, -15578829, -10147201, 13243889, 517024, 15479401, -3853233, 30460520, 1052596}, + FieldElement{-11614875, 13323618, 32618793, 8175907, -15230173, 12596687, 27491595, -4612359, 3179268, -9478891}, + }, + { + FieldElement{31947069, -14366651, -4640583, -15339921, -15125977, -6039709, -14756777, -16411740, 19072640, -9511060}, + FieldElement{11685058, 11822410, 3158003, -13952594, 33402194, -4165066, 5977896, -5215017, 473099, 5040608}, + FieldElement{-20290863, 8198642, -27410132, 11602123, 1290375, -2799760, 28326862, 1721092, -19558642, -3131606}, + }, + }, + { + { + FieldElement{7881532, 10687937, 7578723, 7738378, -18951012, -2553952, 21820786, 8076149, -27868496, 11538389}, + FieldElement{-19935666, 3899861, 18283497, -6801568, -15728660, -11249211, 8754525, 7446702, -5676054, 5797016}, + FieldElement{-11295600, -3793569, -15782110, -7964573, 12708869, -8456199, 2014099, -9050574, -2369172, -5877341}, + }, + { + FieldElement{-22472376, -11568741, -27682020, 1146375, 18956691, 16640559, 1192730, -3714199, 15123619, 10811505}, + FieldElement{14352098, -3419715, -18942044, 10822655, 32750596, 4699007, -70363, 15776356, -28886779, -11974553}, + FieldElement{-28241164, -8072475, -4978962, -5315317, 29416931, 1847569, -20654173, -16484855, 4714547, -9600655}, + }, + { + FieldElement{15200332, 8368572, 19679101, 15970074, -31872674, 1959451, 24611599, -4543832, -11745876, 12340220}, + FieldElement{12876937, -10480056, 33134381, 6590940, -6307776, 14872440, 9613953, 8241152, 15370987, 9608631}, + FieldElement{-4143277, -12014408, 8446281, -391603, 4407738, 13629032, -7724868, 15866074, -28210621, -8814099}, + }, + { + FieldElement{26660628, -15677655, 8393734, 358047, -7401291, 992988, -23904233, 858697, 20571223, 8420556}, + FieldElement{14620715, 13067227, -15447274, 8264467, 14106269, 15080814, 33531827, 12516406, -21574435, -12476749}, + FieldElement{236881, 10476226, 57258, -14677024, 6472998, 2466984, 17258519, 7256740, 8791136, 15069930}, + }, + { + FieldElement{1276410, -9371918, 22949635, -16322807, -23493039, -5702186, 14711875, 4874229, -30663140, -2331391}, + FieldElement{5855666, 4990204, -13711848, 7294284, -7804282, 1924647, -1423175, -7912378, -33069337, 9234253}, + FieldElement{20590503, -9018988, 31529744, -7352666, -2706834, 10650548, 31559055, -11609587, 18979186, 13396066}, + }, + { + FieldElement{24474287, 4968103, 22267082, 4407354, 24063882, -8325180, -18816887, 13594782, 33514650, 7021958}, + FieldElement{-11566906, -6565505, -21365085, 15928892, -26158305, 4315421, -25948728, -3916677, -21480480, 12868082}, + FieldElement{-28635013, 13504661, 19988037, -2132761, 21078225, 6443208, -21446107, 2244500, -12455797, -8089383}, + }, + { + FieldElement{-30595528, 13793479, -5852820, 319136, -25723172, -6263899, 33086546, 8957937, -15233648, 5540521}, + 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-3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647}, + FieldElement{13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511}, + FieldElement{-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032}, + }, + }, + { + { + FieldElement{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834}, + FieldElement{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461}, + FieldElement{29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062}, + }, + { + FieldElement{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516}, + FieldElement{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547}, + FieldElement{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240}, + }, + { + FieldElement{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038}, + FieldElement{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741}, + FieldElement{16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103}, + }, + { + FieldElement{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747}, + FieldElement{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323}, + FieldElement{31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016}, + }, + { + FieldElement{-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373}, + FieldElement{15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228}, + FieldElement{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141}, + }, + { + FieldElement{16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399}, + FieldElement{11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831}, + FieldElement{-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376}, + }, + { + FieldElement{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313}, + FieldElement{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958}, + FieldElement{-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577}, + }, + { + FieldElement{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743}, + FieldElement{29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684}, + FieldElement{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476}, + }, + }, +} diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go new file mode 100644 index 0000000..fd03c25 --- /dev/null +++ b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go @@ -0,0 +1,1793 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package edwards25519 + +import "encoding/binary" + +// This code is a port of the public domain, “ref10” implementation of ed25519 +// from SUPERCOP. + +// FieldElement represents an element of the field GF(2^255 - 19). An element +// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77 +// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on +// context. +type FieldElement [10]int32 + +var zero FieldElement + +func FeZero(fe *FieldElement) { + copy(fe[:], zero[:]) +} + +func FeOne(fe *FieldElement) { + FeZero(fe) + fe[0] = 1 +} + +func FeAdd(dst, a, b *FieldElement) { + dst[0] = a[0] + b[0] + dst[1] = a[1] + b[1] + dst[2] = a[2] + b[2] + dst[3] = a[3] + b[3] + dst[4] = a[4] + b[4] + dst[5] = a[5] + b[5] + dst[6] = a[6] + b[6] + dst[7] = a[7] + b[7] + dst[8] = a[8] + b[8] + dst[9] = a[9] + b[9] +} + +func FeSub(dst, a, b *FieldElement) { + dst[0] = a[0] - b[0] + dst[1] = a[1] - b[1] + dst[2] = a[2] - b[2] + dst[3] = a[3] - b[3] + dst[4] = a[4] - b[4] + dst[5] = a[5] - b[5] + dst[6] = a[6] - b[6] + dst[7] = a[7] - b[7] + dst[8] = a[8] - b[8] + dst[9] = a[9] - b[9] +} + +func FeCopy(dst, src *FieldElement) { + copy(dst[:], src[:]) +} + +// Replace (f,g) with (g,g) if b == 1; +// replace (f,g) with (f,g) if b == 0. +// +// Preconditions: b in {0,1}. +func FeCMove(f, g *FieldElement, b int32) { + b = -b + f[0] ^= b & (f[0] ^ g[0]) + f[1] ^= b & (f[1] ^ g[1]) + f[2] ^= b & (f[2] ^ g[2]) + f[3] ^= b & (f[3] ^ g[3]) + f[4] ^= b & (f[4] ^ g[4]) + f[5] ^= b & (f[5] ^ g[5]) + f[6] ^= b & (f[6] ^ g[6]) + f[7] ^= b & (f[7] ^ g[7]) + f[8] ^= b & (f[8] ^ g[8]) + f[9] ^= b & (f[9] ^ g[9]) +} + +func load3(in []byte) int64 { + var r int64 + r = int64(in[0]) + r |= int64(in[1]) << 8 + r |= int64(in[2]) << 16 + return r +} + +func load4(in []byte) int64 { + var r int64 + r = int64(in[0]) + r |= int64(in[1]) << 8 + r |= int64(in[2]) << 16 + r |= int64(in[3]) << 24 + return r +} + +func FeFromBytes(dst *FieldElement, src *[32]byte) { + h0 := load4(src[:]) + h1 := load3(src[4:]) << 6 + h2 := load3(src[7:]) << 5 + h3 := load3(src[10:]) << 3 + h4 := load3(src[13:]) << 2 + h5 := load4(src[16:]) + h6 := load3(src[20:]) << 7 + h7 := load3(src[23:]) << 5 + h8 := load3(src[26:]) << 4 + h9 := (load3(src[29:]) & 8388607) << 2 + + FeCombine(dst, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +// FeToBytes marshals h to s. +// Preconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +// +// Write p=2^255-19; q=floor(h/p). +// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))). +// +// Proof: +// Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4. +// Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4. +// +// Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9). +// Then 0> 25 + q = (h[0] + q) >> 26 + q = (h[1] + q) >> 25 + q = (h[2] + q) >> 26 + q = (h[3] + q) >> 25 + q = (h[4] + q) >> 26 + q = (h[5] + q) >> 25 + q = (h[6] + q) >> 26 + q = (h[7] + q) >> 25 + q = (h[8] + q) >> 26 + q = (h[9] + q) >> 25 + + // Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. + h[0] += 19 * q + // Goal: Output h-2^255 q, which is between 0 and 2^255-20. + + carry[0] = h[0] >> 26 + h[1] += carry[0] + h[0] -= carry[0] << 26 + carry[1] = h[1] >> 25 + h[2] += carry[1] + h[1] -= carry[1] << 25 + carry[2] = h[2] >> 26 + h[3] += carry[2] + h[2] -= carry[2] << 26 + carry[3] = h[3] >> 25 + h[4] += carry[3] + h[3] -= carry[3] << 25 + carry[4] = h[4] >> 26 + h[5] += carry[4] + h[4] -= carry[4] << 26 + carry[5] = h[5] >> 25 + h[6] += carry[5] + h[5] -= carry[5] << 25 + carry[6] = h[6] >> 26 + h[7] += carry[6] + h[6] -= carry[6] << 26 + carry[7] = h[7] >> 25 + h[8] += carry[7] + h[7] -= carry[7] << 25 + carry[8] = h[8] >> 26 + h[9] += carry[8] + h[8] -= carry[8] << 26 + carry[9] = h[9] >> 25 + h[9] -= carry[9] << 25 + // h10 = carry9 + + // Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20. + // Have h[0]+...+2^230 h[9] between 0 and 2^255-1; + // evidently 2^255 h10-2^255 q = 0. + // Goal: Output h[0]+...+2^230 h[9]. + + s[0] = byte(h[0] >> 0) + s[1] = byte(h[0] >> 8) + s[2] = byte(h[0] >> 16) + s[3] = byte((h[0] >> 24) | (h[1] << 2)) + s[4] = byte(h[1] >> 6) + s[5] = byte(h[1] >> 14) + s[6] = byte((h[1] >> 22) | (h[2] << 3)) + s[7] = byte(h[2] >> 5) + s[8] = byte(h[2] >> 13) + s[9] = byte((h[2] >> 21) | (h[3] << 5)) + s[10] = byte(h[3] >> 3) + s[11] = byte(h[3] >> 11) + s[12] = byte((h[3] >> 19) | (h[4] << 6)) + s[13] = byte(h[4] >> 2) + s[14] = byte(h[4] >> 10) + s[15] = byte(h[4] >> 18) + s[16] = byte(h[5] >> 0) + s[17] = byte(h[5] >> 8) + s[18] = byte(h[5] >> 16) + s[19] = byte((h[5] >> 24) | (h[6] << 1)) + s[20] = byte(h[6] >> 7) + s[21] = byte(h[6] >> 15) + s[22] = byte((h[6] >> 23) | (h[7] << 3)) + s[23] = byte(h[7] >> 5) + s[24] = byte(h[7] >> 13) + s[25] = byte((h[7] >> 21) | (h[8] << 4)) + s[26] = byte(h[8] >> 4) + s[27] = byte(h[8] >> 12) + s[28] = byte((h[8] >> 20) | (h[9] << 6)) + s[29] = byte(h[9] >> 2) + s[30] = byte(h[9] >> 10) + s[31] = byte(h[9] >> 18) +} + +func FeIsNegative(f *FieldElement) byte { + var s [32]byte + FeToBytes(&s, f) + return s[0] & 1 +} + +func FeIsNonZero(f *FieldElement) int32 { + var s [32]byte + FeToBytes(&s, f) + var x uint8 + for _, b := range s { + x |= b + } + x |= x >> 4 + x |= x >> 2 + x |= x >> 1 + return int32(x & 1) +} + +// FeNeg sets h = -f +// +// Preconditions: +// |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +// +// Postconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +func FeNeg(h, f *FieldElement) { + h[0] = -f[0] + h[1] = -f[1] + h[2] = -f[2] + h[3] = -f[3] + h[4] = -f[4] + h[5] = -f[5] + h[6] = -f[6] + h[7] = -f[7] + h[8] = -f[8] + h[9] = -f[9] +} + +func FeCombine(h *FieldElement, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) { + var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9 int64 + + /* + |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38)) + i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8 + |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19)) + i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9 + */ + + c0 = (h0 + (1 << 25)) >> 26 + h1 += c0 + h0 -= c0 << 26 + c4 = (h4 + (1 << 25)) >> 26 + h5 += c4 + h4 -= c4 << 26 + /* |h0| <= 2^25 */ + /* |h4| <= 2^25 */ + /* |h1| <= 1.51*2^58 */ + /* |h5| <= 1.51*2^58 */ + + c1 = (h1 + (1 << 24)) >> 25 + h2 += c1 + h1 -= c1 << 25 + c5 = (h5 + (1 << 24)) >> 25 + h6 += c5 + h5 -= c5 << 25 + /* |h1| <= 2^24; from now on fits into int32 */ + /* |h5| <= 2^24; from now on fits into int32 */ + /* |h2| <= 1.21*2^59 */ + /* |h6| <= 1.21*2^59 */ + + c2 = (h2 + (1 << 25)) >> 26 + h3 += c2 + h2 -= c2 << 26 + c6 = (h6 + (1 << 25)) >> 26 + h7 += c6 + h6 -= c6 << 26 + /* |h2| <= 2^25; from now on fits into int32 unchanged */ + /* |h6| <= 2^25; from now on fits into int32 unchanged */ + /* |h3| <= 1.51*2^58 */ + /* |h7| <= 1.51*2^58 */ + + c3 = (h3 + (1 << 24)) >> 25 + h4 += c3 + h3 -= c3 << 25 + c7 = (h7 + (1 << 24)) >> 25 + h8 += c7 + h7 -= c7 << 25 + /* |h3| <= 2^24; from now on fits into int32 unchanged */ + /* |h7| <= 2^24; from now on fits into int32 unchanged */ + /* |h4| <= 1.52*2^33 */ + /* |h8| <= 1.52*2^33 */ + + c4 = (h4 + (1 << 25)) >> 26 + h5 += c4 + h4 -= c4 << 26 + c8 = (h8 + (1 << 25)) >> 26 + h9 += c8 + h8 -= c8 << 26 + /* |h4| <= 2^25; from now on fits into int32 unchanged */ + /* |h8| <= 2^25; from now on fits into int32 unchanged */ + /* |h5| <= 1.01*2^24 */ + /* |h9| <= 1.51*2^58 */ + + c9 = (h9 + (1 << 24)) >> 25 + h0 += c9 * 19 + h9 -= c9 << 25 + /* |h9| <= 2^24; from now on fits into int32 unchanged */ + /* |h0| <= 1.8*2^37 */ + + c0 = (h0 + (1 << 25)) >> 26 + h1 += c0 + h0 -= c0 << 26 + /* |h0| <= 2^25; from now on fits into int32 unchanged */ + /* |h1| <= 1.01*2^24 */ + + h[0] = int32(h0) + h[1] = int32(h1) + h[2] = int32(h2) + h[3] = int32(h3) + h[4] = int32(h4) + h[5] = int32(h5) + h[6] = int32(h6) + h[7] = int32(h7) + h[8] = int32(h8) + h[9] = int32(h9) +} + +// FeMul calculates h = f * g +// Can overlap h with f or g. +// +// Preconditions: +// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +// |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +// +// Postconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +// +// Notes on implementation strategy: +// +// Using schoolbook multiplication. +// Karatsuba would save a little in some cost models. +// +// Most multiplications by 2 and 19 are 32-bit precomputations; +// cheaper than 64-bit postcomputations. +// +// There is one remaining multiplication by 19 in the carry chain; +// one *19 precomputation can be merged into this, +// but the resulting data flow is considerably less clean. +// +// There are 12 carries below. +// 10 of them are 2-way parallelizable and vectorizable. +// Can get away with 11 carries, but then data flow is much deeper. +// +// With tighter constraints on inputs, can squeeze carries into int32. +func FeMul(h, f, g *FieldElement) { + f0 := int64(f[0]) + f1 := int64(f[1]) + f2 := int64(f[2]) + f3 := int64(f[3]) + f4 := int64(f[4]) + f5 := int64(f[5]) + f6 := int64(f[6]) + f7 := int64(f[7]) + f8 := int64(f[8]) + f9 := int64(f[9]) + + f1_2 := int64(2 * f[1]) + f3_2 := int64(2 * f[3]) + f5_2 := int64(2 * f[5]) + f7_2 := int64(2 * f[7]) + f9_2 := int64(2 * f[9]) + + g0 := int64(g[0]) + g1 := int64(g[1]) + g2 := int64(g[2]) + g3 := int64(g[3]) + g4 := int64(g[4]) + g5 := int64(g[5]) + g6 := int64(g[6]) + g7 := int64(g[7]) + g8 := int64(g[8]) + g9 := int64(g[9]) + + g1_19 := int64(19 * g[1]) /* 1.4*2^29 */ + g2_19 := int64(19 * g[2]) /* 1.4*2^30; still ok */ + g3_19 := int64(19 * g[3]) + g4_19 := int64(19 * g[4]) + g5_19 := int64(19 * g[5]) + g6_19 := int64(19 * g[6]) + g7_19 := int64(19 * g[7]) + g8_19 := int64(19 * g[8]) + g9_19 := int64(19 * g[9]) + + h0 := f0*g0 + f1_2*g9_19 + f2*g8_19 + f3_2*g7_19 + f4*g6_19 + f5_2*g5_19 + f6*g4_19 + f7_2*g3_19 + f8*g2_19 + f9_2*g1_19 + h1 := f0*g1 + f1*g0 + f2*g9_19 + f3*g8_19 + f4*g7_19 + f5*g6_19 + f6*g5_19 + f7*g4_19 + f8*g3_19 + f9*g2_19 + h2 := f0*g2 + f1_2*g1 + f2*g0 + f3_2*g9_19 + f4*g8_19 + f5_2*g7_19 + f6*g6_19 + f7_2*g5_19 + f8*g4_19 + f9_2*g3_19 + h3 := f0*g3 + f1*g2 + f2*g1 + f3*g0 + f4*g9_19 + f5*g8_19 + f6*g7_19 + f7*g6_19 + f8*g5_19 + f9*g4_19 + h4 := f0*g4 + f1_2*g3 + f2*g2 + f3_2*g1 + f4*g0 + f5_2*g9_19 + f6*g8_19 + f7_2*g7_19 + f8*g6_19 + f9_2*g5_19 + h5 := f0*g5 + f1*g4 + f2*g3 + f3*g2 + f4*g1 + f5*g0 + f6*g9_19 + f7*g8_19 + f8*g7_19 + f9*g6_19 + h6 := f0*g6 + f1_2*g5 + f2*g4 + f3_2*g3 + f4*g2 + f5_2*g1 + f6*g0 + f7_2*g9_19 + f8*g8_19 + f9_2*g7_19 + h7 := f0*g7 + f1*g6 + f2*g5 + f3*g4 + f4*g3 + f5*g2 + f6*g1 + f7*g0 + f8*g9_19 + f9*g8_19 + h8 := f0*g8 + f1_2*g7 + f2*g6 + f3_2*g5 + f4*g4 + f5_2*g3 + f6*g2 + f7_2*g1 + f8*g0 + f9_2*g9_19 + h9 := f0*g9 + f1*g8 + f2*g7 + f3*g6 + f4*g5 + f5*g4 + f6*g3 + f7*g2 + f8*g1 + f9*g0 + + FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +func feSquare(f *FieldElement) (h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) { + f0 := int64(f[0]) + f1 := int64(f[1]) + f2 := int64(f[2]) + f3 := int64(f[3]) + f4 := int64(f[4]) + f5 := int64(f[5]) + f6 := int64(f[6]) + f7 := int64(f[7]) + f8 := int64(f[8]) + f9 := int64(f[9]) + f0_2 := int64(2 * f[0]) + f1_2 := int64(2 * f[1]) + f2_2 := int64(2 * f[2]) + f3_2 := int64(2 * f[3]) + f4_2 := int64(2 * f[4]) + f5_2 := int64(2 * f[5]) + f6_2 := int64(2 * f[6]) + f7_2 := int64(2 * f[7]) + f5_38 := 38 * f5 // 1.31*2^30 + f6_19 := 19 * f6 // 1.31*2^30 + f7_38 := 38 * f7 // 1.31*2^30 + f8_19 := 19 * f8 // 1.31*2^30 + f9_38 := 38 * f9 // 1.31*2^30 + + h0 = f0*f0 + f1_2*f9_38 + f2_2*f8_19 + f3_2*f7_38 + f4_2*f6_19 + f5*f5_38 + h1 = f0_2*f1 + f2*f9_38 + f3_2*f8_19 + f4*f7_38 + f5_2*f6_19 + h2 = f0_2*f2 + f1_2*f1 + f3_2*f9_38 + f4_2*f8_19 + f5_2*f7_38 + f6*f6_19 + h3 = f0_2*f3 + f1_2*f2 + f4*f9_38 + f5_2*f8_19 + f6*f7_38 + h4 = f0_2*f4 + f1_2*f3_2 + f2*f2 + f5_2*f9_38 + f6_2*f8_19 + f7*f7_38 + h5 = f0_2*f5 + f1_2*f4 + f2_2*f3 + f6*f9_38 + f7_2*f8_19 + h6 = f0_2*f6 + f1_2*f5_2 + f2_2*f4 + f3_2*f3 + f7_2*f9_38 + f8*f8_19 + h7 = f0_2*f7 + f1_2*f6 + f2_2*f5 + f3_2*f4 + f8*f9_38 + h8 = f0_2*f8 + f1_2*f7_2 + f2_2*f6 + f3_2*f5_2 + f4*f4 + f9*f9_38 + h9 = f0_2*f9 + f1_2*f8 + f2_2*f7 + f3_2*f6 + f4_2*f5 + + return +} + +// FeSquare calculates h = f*f. Can overlap h with f. +// +// Preconditions: +// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +// +// Postconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +func FeSquare(h, f *FieldElement) { + h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f) + FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +// FeSquare2 sets h = 2 * f * f +// +// Can overlap h with f. +// +// Preconditions: +// |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. +// +// Postconditions: +// |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. +// See fe_mul.c for discussion of implementation strategy. +func FeSquare2(h, f *FieldElement) { + h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f) + + h0 += h0 + h1 += h1 + h2 += h2 + h3 += h3 + h4 += h4 + h5 += h5 + h6 += h6 + h7 += h7 + h8 += h8 + h9 += h9 + + FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +func FeInvert(out, z *FieldElement) { + var t0, t1, t2, t3 FieldElement + var i int + + FeSquare(&t0, z) // 2^1 + FeSquare(&t1, &t0) // 2^2 + for i = 1; i < 2; i++ { // 2^3 + FeSquare(&t1, &t1) + } + FeMul(&t1, z, &t1) // 2^3 + 2^0 + FeMul(&t0, &t0, &t1) // 2^3 + 2^1 + 2^0 + FeSquare(&t2, &t0) // 2^4 + 2^2 + 2^1 + FeMul(&t1, &t1, &t2) // 2^4 + 2^3 + 2^2 + 2^1 + 2^0 + FeSquare(&t2, &t1) // 5,4,3,2,1 + for i = 1; i < 5; i++ { // 9,8,7,6,5 + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) // 9,8,7,6,5,4,3,2,1,0 + FeSquare(&t2, &t1) // 10..1 + for i = 1; i < 10; i++ { // 19..10 + FeSquare(&t2, &t2) + } + FeMul(&t2, &t2, &t1) // 19..0 + FeSquare(&t3, &t2) // 20..1 + for i = 1; i < 20; i++ { // 39..20 + FeSquare(&t3, &t3) + } + FeMul(&t2, &t3, &t2) // 39..0 + FeSquare(&t2, &t2) // 40..1 + for i = 1; i < 10; i++ { // 49..10 + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) // 49..0 + FeSquare(&t2, &t1) // 50..1 + for i = 1; i < 50; i++ { // 99..50 + FeSquare(&t2, &t2) + } + FeMul(&t2, &t2, &t1) // 99..0 + FeSquare(&t3, &t2) // 100..1 + for i = 1; i < 100; i++ { // 199..100 + FeSquare(&t3, &t3) + } + FeMul(&t2, &t3, &t2) // 199..0 + FeSquare(&t2, &t2) // 200..1 + for i = 1; i < 50; i++ { // 249..50 + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) // 249..0 + FeSquare(&t1, &t1) // 250..1 + for i = 1; i < 5; i++ { // 254..5 + FeSquare(&t1, &t1) + } + FeMul(out, &t1, &t0) // 254..5,3,1,0 +} + +func fePow22523(out, z *FieldElement) { + var t0, t1, t2 FieldElement + var i int + + FeSquare(&t0, z) + for i = 1; i < 1; i++ { + FeSquare(&t0, &t0) + } + FeSquare(&t1, &t0) + for i = 1; i < 2; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t1, z, &t1) + FeMul(&t0, &t0, &t1) + FeSquare(&t0, &t0) + for i = 1; i < 1; i++ { + FeSquare(&t0, &t0) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t1, &t0) + for i = 1; i < 5; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t1, &t0) + for i = 1; i < 10; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t1, &t1, &t0) + FeSquare(&t2, &t1) + for i = 1; i < 20; i++ { + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) + FeSquare(&t1, &t1) + for i = 1; i < 10; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t1, &t0) + for i = 1; i < 50; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t1, &t1, &t0) + FeSquare(&t2, &t1) + for i = 1; i < 100; i++ { + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) + FeSquare(&t1, &t1) + for i = 1; i < 50; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t0, &t0) + for i = 1; i < 2; i++ { + FeSquare(&t0, &t0) + } + FeMul(out, &t0, z) +} + +// Group elements are members of the elliptic curve -x^2 + y^2 = 1 + d * x^2 * +// y^2 where d = -121665/121666. +// +// Several representations are used: +// ProjectiveGroupElement: (X:Y:Z) satisfying x=X/Z, y=Y/Z +// ExtendedGroupElement: (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT +// CompletedGroupElement: ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T +// PreComputedGroupElement: (y+x,y-x,2dxy) + +type ProjectiveGroupElement struct { + X, Y, Z FieldElement +} + +type ExtendedGroupElement struct { + X, Y, Z, T FieldElement +} + +type CompletedGroupElement struct { + X, Y, Z, T FieldElement +} + +type PreComputedGroupElement struct { + yPlusX, yMinusX, xy2d FieldElement +} + +type CachedGroupElement struct { + yPlusX, yMinusX, Z, T2d FieldElement +} + +func (p *ProjectiveGroupElement) Zero() { + FeZero(&p.X) + FeOne(&p.Y) + FeOne(&p.Z) +} + +func (p *ProjectiveGroupElement) Double(r *CompletedGroupElement) { + var t0 FieldElement + + FeSquare(&r.X, &p.X) + FeSquare(&r.Z, &p.Y) + FeSquare2(&r.T, &p.Z) + FeAdd(&r.Y, &p.X, &p.Y) + FeSquare(&t0, &r.Y) + FeAdd(&r.Y, &r.Z, &r.X) + FeSub(&r.Z, &r.Z, &r.X) + FeSub(&r.X, &t0, &r.Y) + FeSub(&r.T, &r.T, &r.Z) +} + +func (p *ProjectiveGroupElement) ToBytes(s *[32]byte) { + var recip, x, y FieldElement + + FeInvert(&recip, &p.Z) + FeMul(&x, &p.X, &recip) + FeMul(&y, &p.Y, &recip) + FeToBytes(s, &y) + s[31] ^= FeIsNegative(&x) << 7 +} + +func (p *ExtendedGroupElement) Zero() { + FeZero(&p.X) + FeOne(&p.Y) + FeOne(&p.Z) + FeZero(&p.T) +} + +func (p *ExtendedGroupElement) Double(r *CompletedGroupElement) { + var q ProjectiveGroupElement + p.ToProjective(&q) + q.Double(r) +} + +func (p *ExtendedGroupElement) ToCached(r *CachedGroupElement) { + FeAdd(&r.yPlusX, &p.Y, &p.X) + FeSub(&r.yMinusX, &p.Y, &p.X) + FeCopy(&r.Z, &p.Z) + FeMul(&r.T2d, &p.T, &d2) +} + +func (p *ExtendedGroupElement) ToProjective(r *ProjectiveGroupElement) { + FeCopy(&r.X, &p.X) + FeCopy(&r.Y, &p.Y) + FeCopy(&r.Z, &p.Z) +} + +func (p *ExtendedGroupElement) ToBytes(s *[32]byte) { + var recip, x, y FieldElement + + FeInvert(&recip, &p.Z) + FeMul(&x, &p.X, &recip) + FeMul(&y, &p.Y, &recip) + FeToBytes(s, &y) + s[31] ^= FeIsNegative(&x) << 7 +} + +func (p *ExtendedGroupElement) FromBytes(s *[32]byte) bool { + var u, v, v3, vxx, check FieldElement + + FeFromBytes(&p.Y, s) + FeOne(&p.Z) + FeSquare(&u, &p.Y) + FeMul(&v, &u, &d) + FeSub(&u, &u, &p.Z) // y = y^2-1 + FeAdd(&v, &v, &p.Z) // v = dy^2+1 + + FeSquare(&v3, &v) + FeMul(&v3, &v3, &v) // v3 = v^3 + FeSquare(&p.X, &v3) + FeMul(&p.X, &p.X, &v) + FeMul(&p.X, &p.X, &u) // x = uv^7 + + fePow22523(&p.X, &p.X) // x = (uv^7)^((q-5)/8) + FeMul(&p.X, &p.X, &v3) + FeMul(&p.X, &p.X, &u) // x = uv^3(uv^7)^((q-5)/8) + + var tmpX, tmp2 [32]byte + + FeSquare(&vxx, &p.X) + FeMul(&vxx, &vxx, &v) + FeSub(&check, &vxx, &u) // vx^2-u + if FeIsNonZero(&check) == 1 { + FeAdd(&check, &vxx, &u) // vx^2+u + if FeIsNonZero(&check) == 1 { + return false + } + FeMul(&p.X, &p.X, &SqrtM1) + + FeToBytes(&tmpX, &p.X) + for i, v := range tmpX { + tmp2[31-i] = v + } + } + + if FeIsNegative(&p.X) != (s[31] >> 7) { + FeNeg(&p.X, &p.X) + } + + FeMul(&p.T, &p.X, &p.Y) + return true +} + +func (p *CompletedGroupElement) ToProjective(r *ProjectiveGroupElement) { + FeMul(&r.X, &p.X, &p.T) + FeMul(&r.Y, &p.Y, &p.Z) + FeMul(&r.Z, &p.Z, &p.T) +} + +func (p *CompletedGroupElement) ToExtended(r *ExtendedGroupElement) { + FeMul(&r.X, &p.X, &p.T) + FeMul(&r.Y, &p.Y, &p.Z) + FeMul(&r.Z, &p.Z, &p.T) + FeMul(&r.T, &p.X, &p.Y) +} + +func (p *PreComputedGroupElement) Zero() { + FeOne(&p.yPlusX) + FeOne(&p.yMinusX) + FeZero(&p.xy2d) +} + +func geAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yPlusX) + FeMul(&r.Y, &r.Y, &q.yMinusX) + FeMul(&r.T, &q.T2d, &p.T) + FeMul(&r.X, &p.Z, &q.Z) + FeAdd(&t0, &r.X, &r.X) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeAdd(&r.Z, &t0, &r.T) + FeSub(&r.T, &t0, &r.T) +} + +func geSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yMinusX) + FeMul(&r.Y, &r.Y, &q.yPlusX) + FeMul(&r.T, &q.T2d, &p.T) + FeMul(&r.X, &p.Z, &q.Z) + FeAdd(&t0, &r.X, &r.X) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeSub(&r.Z, &t0, &r.T) + FeAdd(&r.T, &t0, &r.T) +} + +func geMixedAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yPlusX) + FeMul(&r.Y, &r.Y, &q.yMinusX) + FeMul(&r.T, &q.xy2d, &p.T) + FeAdd(&t0, &p.Z, &p.Z) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeAdd(&r.Z, &t0, &r.T) + FeSub(&r.T, &t0, &r.T) +} + +func geMixedSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yMinusX) + FeMul(&r.Y, &r.Y, &q.yPlusX) + FeMul(&r.T, &q.xy2d, &p.T) + FeAdd(&t0, &p.Z, &p.Z) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeSub(&r.Z, &t0, &r.T) + FeAdd(&r.T, &t0, &r.T) +} + +func slide(r *[256]int8, a *[32]byte) { + for i := range r { + r[i] = int8(1 & (a[i>>3] >> uint(i&7))) + } + + for i := range r { + if r[i] != 0 { + for b := 1; b <= 6 && i+b < 256; b++ { + if r[i+b] != 0 { + if r[i]+(r[i+b]<= -15 { + r[i] -= r[i+b] << uint(b) + for k := i + b; k < 256; k++ { + if r[k] == 0 { + r[k] = 1 + break + } + r[k] = 0 + } + } else { + break + } + } + } + } + } +} + +// GeDoubleScalarMultVartime sets r = a*A + b*B +// where a = a[0]+256*a[1]+...+256^31 a[31]. +// and b = b[0]+256*b[1]+...+256^31 b[31]. +// B is the Ed25519 base point (x,4/5) with x positive. +func GeDoubleScalarMultVartime(r *ProjectiveGroupElement, a *[32]byte, A *ExtendedGroupElement, b *[32]byte) { + var aSlide, bSlide [256]int8 + var Ai [8]CachedGroupElement // A,3A,5A,7A,9A,11A,13A,15A + var t CompletedGroupElement + var u, A2 ExtendedGroupElement + var i int + + slide(&aSlide, a) + slide(&bSlide, b) + + A.ToCached(&Ai[0]) + A.Double(&t) + t.ToExtended(&A2) + + for i := 0; i < 7; i++ { + geAdd(&t, &A2, &Ai[i]) + t.ToExtended(&u) + u.ToCached(&Ai[i+1]) + } + + r.Zero() + + for i = 255; i >= 0; i-- { + if aSlide[i] != 0 || bSlide[i] != 0 { + break + } + } + + for ; i >= 0; i-- { + r.Double(&t) + + if aSlide[i] > 0 { + t.ToExtended(&u) + geAdd(&t, &u, &Ai[aSlide[i]/2]) + } else if aSlide[i] < 0 { + t.ToExtended(&u) + geSub(&t, &u, &Ai[(-aSlide[i])/2]) + } + + if bSlide[i] > 0 { + t.ToExtended(&u) + geMixedAdd(&t, &u, &bi[bSlide[i]/2]) + } else if bSlide[i] < 0 { + t.ToExtended(&u) + geMixedSub(&t, &u, &bi[(-bSlide[i])/2]) + } + + t.ToProjective(r) + } +} + +// equal returns 1 if b == c and 0 otherwise, assuming that b and c are +// non-negative. +func equal(b, c int32) int32 { + x := uint32(b ^ c) + x-- + return int32(x >> 31) +} + +// negative returns 1 if b < 0 and 0 otherwise. +func negative(b int32) int32 { + return (b >> 31) & 1 +} + +func PreComputedGroupElementCMove(t, u *PreComputedGroupElement, b int32) { + FeCMove(&t.yPlusX, &u.yPlusX, b) + FeCMove(&t.yMinusX, &u.yMinusX, b) + FeCMove(&t.xy2d, &u.xy2d, b) +} + +func selectPoint(t *PreComputedGroupElement, pos int32, b int32) { + var minusT PreComputedGroupElement + bNegative := negative(b) + bAbs := b - (((-bNegative) & b) << 1) + + t.Zero() + for i := int32(0); i < 8; i++ { + PreComputedGroupElementCMove(t, &base[pos][i], equal(bAbs, i+1)) + } + FeCopy(&minusT.yPlusX, &t.yMinusX) + FeCopy(&minusT.yMinusX, &t.yPlusX) + FeNeg(&minusT.xy2d, &t.xy2d) + PreComputedGroupElementCMove(t, &minusT, bNegative) +} + +// GeScalarMultBase computes h = a*B, where +// a = a[0]+256*a[1]+...+256^31 a[31] +// B is the Ed25519 base point (x,4/5) with x positive. +// +// Preconditions: +// a[31] <= 127 +func GeScalarMultBase(h *ExtendedGroupElement, a *[32]byte) { + var e [64]int8 + + for i, v := range a { + e[2*i] = int8(v & 15) + e[2*i+1] = int8((v >> 4) & 15) + } + + // each e[i] is between 0 and 15 and e[63] is between 0 and 7. + + carry := int8(0) + for i := 0; i < 63; i++ { + e[i] += carry + carry = (e[i] + 8) >> 4 + e[i] -= carry << 4 + } + e[63] += carry + // each e[i] is between -8 and 8. + + h.Zero() + var t PreComputedGroupElement + var r CompletedGroupElement + for i := int32(1); i < 64; i += 2 { + selectPoint(&t, i/2, int32(e[i])) + geMixedAdd(&r, h, &t) + r.ToExtended(h) + } + + var s ProjectiveGroupElement + + h.Double(&r) + r.ToProjective(&s) + s.Double(&r) + r.ToProjective(&s) + s.Double(&r) + r.ToProjective(&s) + s.Double(&r) + r.ToExtended(h) + + for i := int32(0); i < 64; i += 2 { + selectPoint(&t, i/2, int32(e[i])) + geMixedAdd(&r, h, &t) + r.ToExtended(h) + } +} + +// The scalars are GF(2^252 + 27742317777372353535851937790883648493). + +// Input: +// a[0]+256*a[1]+...+256^31*a[31] = a +// b[0]+256*b[1]+...+256^31*b[31] = b +// c[0]+256*c[1]+...+256^31*c[31] = c +// +// Output: +// s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l +// where l = 2^252 + 27742317777372353535851937790883648493. +func ScMulAdd(s, a, b, c *[32]byte) { + a0 := 2097151 & load3(a[:]) + a1 := 2097151 & (load4(a[2:]) >> 5) + a2 := 2097151 & (load3(a[5:]) >> 2) + a3 := 2097151 & (load4(a[7:]) >> 7) + a4 := 2097151 & (load4(a[10:]) >> 4) + a5 := 2097151 & (load3(a[13:]) >> 1) + a6 := 2097151 & (load4(a[15:]) >> 6) + a7 := 2097151 & (load3(a[18:]) >> 3) + a8 := 2097151 & load3(a[21:]) + a9 := 2097151 & (load4(a[23:]) >> 5) + a10 := 2097151 & (load3(a[26:]) >> 2) + a11 := (load4(a[28:]) >> 7) + b0 := 2097151 & load3(b[:]) + b1 := 2097151 & (load4(b[2:]) >> 5) + b2 := 2097151 & (load3(b[5:]) >> 2) + b3 := 2097151 & (load4(b[7:]) >> 7) + b4 := 2097151 & (load4(b[10:]) >> 4) + b5 := 2097151 & (load3(b[13:]) >> 1) + b6 := 2097151 & (load4(b[15:]) >> 6) + b7 := 2097151 & (load3(b[18:]) >> 3) + b8 := 2097151 & load3(b[21:]) + b9 := 2097151 & (load4(b[23:]) >> 5) + b10 := 2097151 & (load3(b[26:]) >> 2) + b11 := (load4(b[28:]) >> 7) + c0 := 2097151 & load3(c[:]) + c1 := 2097151 & (load4(c[2:]) >> 5) + c2 := 2097151 & (load3(c[5:]) >> 2) + c3 := 2097151 & (load4(c[7:]) >> 7) + c4 := 2097151 & (load4(c[10:]) >> 4) + c5 := 2097151 & (load3(c[13:]) >> 1) + c6 := 2097151 & (load4(c[15:]) >> 6) + c7 := 2097151 & (load3(c[18:]) >> 3) + c8 := 2097151 & load3(c[21:]) + c9 := 2097151 & (load4(c[23:]) >> 5) + c10 := 2097151 & (load3(c[26:]) >> 2) + c11 := (load4(c[28:]) >> 7) + var carry [23]int64 + + s0 := c0 + a0*b0 + s1 := c1 + a0*b1 + a1*b0 + s2 := c2 + a0*b2 + a1*b1 + a2*b0 + s3 := c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0 + s4 := c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0 + s5 := c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0 + s6 := c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0 + s7 := c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0 + s8 := c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0 + s9 := c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0 + s10 := c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0 + s11 := c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0 + s12 := a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1 + s13 := a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2 + s14 := a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3 + s15 := a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4 + s16 := a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5 + s17 := a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6 + s18 := a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7 + s19 := a8*b11 + a9*b10 + a10*b9 + a11*b8 + s20 := a9*b11 + a10*b10 + a11*b9 + s21 := a10*b11 + a11*b10 + s22 := a11 * b11 + s23 := int64(0) + + carry[0] = (s0 + (1 << 20)) >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[2] = (s2 + (1 << 20)) >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[4] = (s4 + (1 << 20)) >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[12] = (s12 + (1 << 20)) >> 21 + s13 += carry[12] + s12 -= carry[12] << 21 + carry[14] = (s14 + (1 << 20)) >> 21 + s15 += carry[14] + s14 -= carry[14] << 21 + carry[16] = (s16 + (1 << 20)) >> 21 + s17 += carry[16] + s16 -= carry[16] << 21 + carry[18] = (s18 + (1 << 20)) >> 21 + s19 += carry[18] + s18 -= carry[18] << 21 + carry[20] = (s20 + (1 << 20)) >> 21 + s21 += carry[20] + s20 -= carry[20] << 21 + carry[22] = (s22 + (1 << 20)) >> 21 + s23 += carry[22] + s22 -= carry[22] << 21 + + carry[1] = (s1 + (1 << 20)) >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[3] = (s3 + (1 << 20)) >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[5] = (s5 + (1 << 20)) >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + carry[13] = (s13 + (1 << 20)) >> 21 + s14 += carry[13] + s13 -= carry[13] << 21 + carry[15] = (s15 + (1 << 20)) >> 21 + s16 += carry[15] + s15 -= carry[15] << 21 + carry[17] = (s17 + (1 << 20)) >> 21 + s18 += carry[17] + s17 -= carry[17] << 21 + carry[19] = (s19 + (1 << 20)) >> 21 + s20 += carry[19] + s19 -= carry[19] << 21 + carry[21] = (s21 + (1 << 20)) >> 21 + s22 += carry[21] + s21 -= carry[21] << 21 + + s11 += s23 * 666643 + s12 += s23 * 470296 + s13 += s23 * 654183 + s14 -= s23 * 997805 + s15 += s23 * 136657 + s16 -= s23 * 683901 + s23 = 0 + + s10 += s22 * 666643 + s11 += s22 * 470296 + s12 += s22 * 654183 + s13 -= s22 * 997805 + s14 += s22 * 136657 + s15 -= s22 * 683901 + s22 = 0 + + s9 += s21 * 666643 + s10 += s21 * 470296 + s11 += s21 * 654183 + s12 -= s21 * 997805 + s13 += s21 * 136657 + s14 -= s21 * 683901 + s21 = 0 + + s8 += s20 * 666643 + s9 += s20 * 470296 + s10 += s20 * 654183 + s11 -= s20 * 997805 + s12 += s20 * 136657 + s13 -= s20 * 683901 + s20 = 0 + + s7 += s19 * 666643 + s8 += s19 * 470296 + s9 += s19 * 654183 + s10 -= s19 * 997805 + s11 += s19 * 136657 + s12 -= s19 * 683901 + s19 = 0 + + s6 += s18 * 666643 + s7 += s18 * 470296 + s8 += s18 * 654183 + s9 -= s18 * 997805 + s10 += s18 * 136657 + s11 -= s18 * 683901 + s18 = 0 + + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[12] = (s12 + (1 << 20)) >> 21 + s13 += carry[12] + s12 -= carry[12] << 21 + carry[14] = (s14 + (1 << 20)) >> 21 + s15 += carry[14] + s14 -= carry[14] << 21 + carry[16] = (s16 + (1 << 20)) >> 21 + s17 += carry[16] + s16 -= carry[16] << 21 + + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + carry[13] = (s13 + (1 << 20)) >> 21 + s14 += carry[13] + s13 -= carry[13] << 21 + carry[15] = (s15 + (1 << 20)) >> 21 + s16 += carry[15] + s15 -= carry[15] << 21 + + s5 += s17 * 666643 + s6 += s17 * 470296 + s7 += s17 * 654183 + s8 -= s17 * 997805 + s9 += s17 * 136657 + s10 -= s17 * 683901 + s17 = 0 + + s4 += s16 * 666643 + s5 += s16 * 470296 + s6 += s16 * 654183 + s7 -= s16 * 997805 + s8 += s16 * 136657 + s9 -= s16 * 683901 + s16 = 0 + + s3 += s15 * 666643 + s4 += s15 * 470296 + s5 += s15 * 654183 + s6 -= s15 * 997805 + s7 += s15 * 136657 + s8 -= s15 * 683901 + s15 = 0 + + s2 += s14 * 666643 + s3 += s14 * 470296 + s4 += s14 * 654183 + s5 -= s14 * 997805 + s6 += s14 * 136657 + s7 -= s14 * 683901 + s14 = 0 + + s1 += s13 * 666643 + s2 += s13 * 470296 + s3 += s13 * 654183 + s4 -= s13 * 997805 + s5 += s13 * 136657 + s6 -= s13 * 683901 + s13 = 0 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = (s0 + (1 << 20)) >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[2] = (s2 + (1 << 20)) >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[4] = (s4 + (1 << 20)) >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + carry[1] = (s1 + (1 << 20)) >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[3] = (s3 + (1 << 20)) >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[5] = (s5 + (1 << 20)) >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[11] = s11 >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + s[0] = byte(s0 >> 0) + s[1] = byte(s0 >> 8) + s[2] = byte((s0 >> 16) | (s1 << 5)) + s[3] = byte(s1 >> 3) + s[4] = byte(s1 >> 11) + s[5] = byte((s1 >> 19) | (s2 << 2)) + s[6] = byte(s2 >> 6) + s[7] = byte((s2 >> 14) | (s3 << 7)) + s[8] = byte(s3 >> 1) + s[9] = byte(s3 >> 9) + s[10] = byte((s3 >> 17) | (s4 << 4)) + s[11] = byte(s4 >> 4) + s[12] = byte(s4 >> 12) + s[13] = byte((s4 >> 20) | (s5 << 1)) + s[14] = byte(s5 >> 7) + s[15] = byte((s5 >> 15) | (s6 << 6)) + s[16] = byte(s6 >> 2) + s[17] = byte(s6 >> 10) + s[18] = byte((s6 >> 18) | (s7 << 3)) + s[19] = byte(s7 >> 5) + s[20] = byte(s7 >> 13) + s[21] = byte(s8 >> 0) + s[22] = byte(s8 >> 8) + s[23] = byte((s8 >> 16) | (s9 << 5)) + s[24] = byte(s9 >> 3) + s[25] = byte(s9 >> 11) + s[26] = byte((s9 >> 19) | (s10 << 2)) + s[27] = byte(s10 >> 6) + s[28] = byte((s10 >> 14) | (s11 << 7)) + s[29] = byte(s11 >> 1) + s[30] = byte(s11 >> 9) + s[31] = byte(s11 >> 17) +} + +// Input: +// s[0]+256*s[1]+...+256^63*s[63] = s +// +// Output: +// s[0]+256*s[1]+...+256^31*s[31] = s mod l +// where l = 2^252 + 27742317777372353535851937790883648493. +func ScReduce(out *[32]byte, s *[64]byte) { + s0 := 2097151 & load3(s[:]) + s1 := 2097151 & (load4(s[2:]) >> 5) + s2 := 2097151 & (load3(s[5:]) >> 2) + s3 := 2097151 & (load4(s[7:]) >> 7) + s4 := 2097151 & (load4(s[10:]) >> 4) + s5 := 2097151 & (load3(s[13:]) >> 1) + s6 := 2097151 & (load4(s[15:]) >> 6) + s7 := 2097151 & (load3(s[18:]) >> 3) + s8 := 2097151 & load3(s[21:]) + s9 := 2097151 & (load4(s[23:]) >> 5) + s10 := 2097151 & (load3(s[26:]) >> 2) + s11 := 2097151 & (load4(s[28:]) >> 7) + s12 := 2097151 & (load4(s[31:]) >> 4) + s13 := 2097151 & (load3(s[34:]) >> 1) + s14 := 2097151 & (load4(s[36:]) >> 6) + s15 := 2097151 & (load3(s[39:]) >> 3) + s16 := 2097151 & load3(s[42:]) + s17 := 2097151 & (load4(s[44:]) >> 5) + s18 := 2097151 & (load3(s[47:]) >> 2) + s19 := 2097151 & (load4(s[49:]) >> 7) + s20 := 2097151 & (load4(s[52:]) >> 4) + s21 := 2097151 & (load3(s[55:]) >> 1) + s22 := 2097151 & (load4(s[57:]) >> 6) + s23 := (load4(s[60:]) >> 3) + + s11 += s23 * 666643 + s12 += s23 * 470296 + s13 += s23 * 654183 + s14 -= s23 * 997805 + s15 += s23 * 136657 + s16 -= s23 * 683901 + s23 = 0 + + s10 += s22 * 666643 + s11 += s22 * 470296 + s12 += s22 * 654183 + s13 -= s22 * 997805 + s14 += s22 * 136657 + s15 -= s22 * 683901 + s22 = 0 + + s9 += s21 * 666643 + s10 += s21 * 470296 + s11 += s21 * 654183 + s12 -= s21 * 997805 + s13 += s21 * 136657 + s14 -= s21 * 683901 + s21 = 0 + + s8 += s20 * 666643 + s9 += s20 * 470296 + s10 += s20 * 654183 + s11 -= s20 * 997805 + s12 += s20 * 136657 + s13 -= s20 * 683901 + s20 = 0 + + s7 += s19 * 666643 + s8 += s19 * 470296 + s9 += s19 * 654183 + s10 -= s19 * 997805 + s11 += s19 * 136657 + s12 -= s19 * 683901 + s19 = 0 + + s6 += s18 * 666643 + s7 += s18 * 470296 + s8 += s18 * 654183 + s9 -= s18 * 997805 + s10 += s18 * 136657 + s11 -= s18 * 683901 + s18 = 0 + + var carry [17]int64 + + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[12] = (s12 + (1 << 20)) >> 21 + s13 += carry[12] + s12 -= carry[12] << 21 + carry[14] = (s14 + (1 << 20)) >> 21 + s15 += carry[14] + s14 -= carry[14] << 21 + carry[16] = (s16 + (1 << 20)) >> 21 + s17 += carry[16] + s16 -= carry[16] << 21 + + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + carry[13] = (s13 + (1 << 20)) >> 21 + s14 += carry[13] + s13 -= carry[13] << 21 + carry[15] = (s15 + (1 << 20)) >> 21 + s16 += carry[15] + s15 -= carry[15] << 21 + + s5 += s17 * 666643 + s6 += s17 * 470296 + s7 += s17 * 654183 + s8 -= s17 * 997805 + s9 += s17 * 136657 + s10 -= s17 * 683901 + s17 = 0 + + s4 += s16 * 666643 + s5 += s16 * 470296 + s6 += s16 * 654183 + s7 -= s16 * 997805 + s8 += s16 * 136657 + s9 -= s16 * 683901 + s16 = 0 + + s3 += s15 * 666643 + s4 += s15 * 470296 + s5 += s15 * 654183 + s6 -= s15 * 997805 + s7 += s15 * 136657 + s8 -= s15 * 683901 + s15 = 0 + + s2 += s14 * 666643 + s3 += s14 * 470296 + s4 += s14 * 654183 + s5 -= s14 * 997805 + s6 += s14 * 136657 + s7 -= s14 * 683901 + s14 = 0 + + s1 += s13 * 666643 + s2 += s13 * 470296 + s3 += s13 * 654183 + s4 -= s13 * 997805 + s5 += s13 * 136657 + s6 -= s13 * 683901 + s13 = 0 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = (s0 + (1 << 20)) >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[2] = (s2 + (1 << 20)) >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[4] = (s4 + (1 << 20)) >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + carry[1] = (s1 + (1 << 20)) >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[3] = (s3 + (1 << 20)) >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[5] = (s5 + (1 << 20)) >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[11] = s11 >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + out[0] = byte(s0 >> 0) + out[1] = byte(s0 >> 8) + out[2] = byte((s0 >> 16) | (s1 << 5)) + out[3] = byte(s1 >> 3) + out[4] = byte(s1 >> 11) + out[5] = byte((s1 >> 19) | (s2 << 2)) + out[6] = byte(s2 >> 6) + out[7] = byte((s2 >> 14) | (s3 << 7)) + out[8] = byte(s3 >> 1) + out[9] = byte(s3 >> 9) + out[10] = byte((s3 >> 17) | (s4 << 4)) + out[11] = byte(s4 >> 4) + out[12] = byte(s4 >> 12) + out[13] = byte((s4 >> 20) | (s5 << 1)) + out[14] = byte(s5 >> 7) + out[15] = byte((s5 >> 15) | (s6 << 6)) + out[16] = byte(s6 >> 2) + out[17] = byte(s6 >> 10) + out[18] = byte((s6 >> 18) | (s7 << 3)) + out[19] = byte(s7 >> 5) + out[20] = byte(s7 >> 13) + out[21] = byte(s8 >> 0) + out[22] = byte(s8 >> 8) + out[23] = byte((s8 >> 16) | (s9 << 5)) + out[24] = byte(s9 >> 3) + out[25] = byte(s9 >> 11) + out[26] = byte((s9 >> 19) | (s10 << 2)) + out[27] = byte(s10 >> 6) + out[28] = byte((s10 >> 14) | (s11 << 7)) + out[29] = byte(s11 >> 1) + out[30] = byte(s11 >> 9) + out[31] = byte(s11 >> 17) +} + +// order is the order of Curve25519 in little-endian form. +var order = [4]uint64{0x5812631a5cf5d3ed, 0x14def9dea2f79cd6, 0, 0x1000000000000000} + +// ScMinimal returns true if the given scalar is less than the order of the +// curve. +func ScMinimal(scalar *[32]byte) bool { + for i := 3; ; i-- { + v := binary.LittleEndian.Uint64(scalar[i*8:]) + if v > order[i] { + return false + } else if v < order[i] { + break + } else if i == 0 { + return false + } + } + + return true +} diff --git a/vendor/modules.txt b/vendor/modules.txt index 494e785..892c461 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -1,12 +1,19 @@ -# github.com/nats-io/go-nats v1.6.0 +# github.com/nats-io/go-nats v1.7.2 github.com/nats-io/go-nats github.com/nats-io/go-nats/encoders/builtin github.com/nats-io/go-nats/util +# github.com/nats-io/nkeys v0.0.2 +github.com/nats-io/nkeys # github.com/nats-io/nuid v1.0.0 github.com/nats-io/nuid -# github.com/openfaas-incubator/connector-sdk v0.0.0-20181118154933-2db120a2ec4b +# github.com/openfaas-incubator/connector-sdk v0.0.0-20190611163053-d4baf95d4c62 github.com/openfaas-incubator/connector-sdk/types # github.com/openfaas/faas v0.0.0-20181122165013-495cf9e7aff0 github.com/openfaas/faas/gateway/requests # github.com/openfaas/faas-provider v0.0.0-20181104131730-8b3147b013c6 github.com/openfaas/faas-provider/auth +# github.com/pkg/errors v0.8.1 +github.com/pkg/errors +# golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9 +golang.org/x/crypto/ed25519 +golang.org/x/crypto/ed25519/internal/edwards25519 diff --git a/yaml/kubernetes/connector-dep.yaml b/yaml/kubernetes/connector-dep.yaml new file mode 100644 index 0000000..83e494b --- /dev/null +++ b/yaml/kubernetes/connector-dep.yaml @@ -0,0 +1,44 @@ +apiVersion: extensions/v1beta1 +kind: Deployment +metadata: + labels: + app: nats + component: nats-connector + name: nats-connector + namespace: openfaas +spec: + replicas: 1 + template: + metadata: + labels: + app: nats + component: nats-connector + spec: + containers: + - name: nats + image: openfaas/nats-connector:0.1.0 + env: + - name: gateway_url + value: "http://gateway.openfaas:8080" + - name: topics + value: "faas-request," + - name: print_response + value: "true" + - name: print_response_body + value: "true" + - name: basic_auth + value: "true" + - name: secret_mount_path + value: "/var/secrets/" + - name: topic_delimiter + value: "," + - name: asynchronous_invocation + value: "true" + volumeMounts: + - name: auth + readOnly: true + mountPath: "/var/secrets/" + volumes: + - name: auth + secret: + secretName: basic-auth \ No newline at end of file