Merge pull request sandstorm-io#3741 from mnutt/recover-sandcats

Add recover-sandcats.sh script to regenerate client cert

Author: ocdtrekkie

recover-sandcats.sh

@@ -0,0 +1,260 @@
+#!/bin/bash
+#
+# This script recovers access to a sandcats.io subdomain by generating
+# new keys and using the email-based recovery flow.
+#
+# Usage: ./recover-sandcats.sh [sandstorm-dir]
+#
+# If sandstorm-dir is not provided, defaults to /opt/sandstorm
+
+set -euo pipefail
+
+SANDSTORM_DIR="${1:-/opt/sandstorm}"
+SANDCATS_BASE_DOMAIN="${SANDCATS_BASE_DOMAIN:-sandcats.io}"
+SANDCATS_API_BASE="${SANDCATS_API_BASE:-https://sandcats.io}"
+CURL_USER_AGENT="${CURL_USER_AGENT:-sandstorm-recover-script}"
+
+error() {
+  if [ $# != 0 ]; then
+    echo -en '\e[0;31m' >&2
+    echo "$@" | (fold -s || cat) >&2
+    echo -en '\e[0m' >&2
+  fi
+}
+
+fail() {
+  local error_code="$1"
+  shift
+  echo "*** RECOVERY FAILED ***" >&2
+  echo ""
+  error "$@"
+  echo "" >&2
+  exit 1
+}
+
+prompt() {
+  local VALUE
+  echo -en '\e[1m' >&3
+  echo -n "$1 [$2]" >&3
+  echo -en '\e[0m ' >&3
+  read -u 3 VALUE
+  if [ -z "$VALUE" ]; then
+    VALUE=$2
+  fi
+  echo "$VALUE"
+}
+
+prompt-yesno() {
+  while true; do
+    local VALUE=$(prompt "$@")
+    case $VALUE in
+      y | Y | yes | YES | Yes )
+        return 0
+        ;;
+      n | N | no | NO | No )
+        return 1
+        ;;
+    esac
+    echo "*** Please answer \"yes\" or \"no\"."
+  done
+}
+
+dotdotdot_curl() {
+  echo -n '...' >&2
+  curl "$@"
+  echo -ne '\r' >&2
+}
+
+sandcats_generate_keys() {
+  local SANDCATS_DIR="$SANDSTORM_DIR/var/sandcats"
+
+  if [ -f "$SANDCATS_DIR/id_rsa.private_combined" ]; then
+    echo "Existing keys found in $SANDCATS_DIR"
+    if ! prompt-yesno "Generate new keys? (required for recovery)" "yes"; then
+      fail "E_NEED_NEW_KEYS" "Recovery requires generating new keys."
+    fi
+    # Back up existing keys
+    local BACKUP_DIR="$SANDCATS_DIR/backup.$(date +%Y%m%d-%H%M%S)"
+    mkdir -p "$BACKUP_DIR"
+    mv "$SANDCATS_DIR/id_rsa" "$BACKUP_DIR/" 2>/dev/null || true
+    mv "$SANDCATS_DIR/id_rsa.pub" "$BACKUP_DIR/" 2>/dev/null || true
+    mv "$SANDCATS_DIR/id_rsa.private_combined" "$BACKUP_DIR/" 2>/dev/null || true
+    echo "Backed up existing keys to $BACKUP_DIR"
+  fi
+
+  echo -n 'Generating new keys...'
+
+  mkdir -p -m 0700 "$SANDCATS_DIR"
+  chmod 0700 "$SANDCATS_DIR"
+
+  openssl \
+    req \
+    -new \
+    -newkey rsa:4096 \
+    -days 3650 \
+    -nodes \
+    -x509 \
+    -subj "/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd" \
+    -keyout "$SANDCATS_DIR/id_rsa" \
+    -out "$SANDCATS_DIR/id_rsa.pub" \
+    2>/dev/null
+
+  cat "$SANDCATS_DIR/id_rsa" "$SANDCATS_DIR/id_rsa.pub" > "$SANDCATS_DIR/id_rsa.private_combined"
+
+  chmod 0640 "$SANDCATS_DIR/id_rsa" "$SANDCATS_DIR/id_rsa.pub" "$SANDCATS_DIR/id_rsa.private_combined"
+
+  echo " done."
+}
+
+sandcats_recover_domain() {
+  local SANDCATS_DIR="$SANDSTORM_DIR/var/sandcats"
+
+  DESIRED_SANDCATS_NAME=$(prompt "What Sandcats subdomain do you want to recover?" "")
+
+  if [ -z "$DESIRED_SANDCATS_NAME" ]; then
+    fail "E_NO_SUBDOMAIN" "You must provide a subdomain to recover."
+  fi
+
+  # Strip the base domain if provided
+  if [[ $DESIRED_SANDCATS_NAME =~ [.] ]]; then
+    echo ""
+    echo "You entered: $DESIRED_SANDCATS_NAME"
+    echo ""
+    echo "Please enter just the subdomain part, without any dots."
+    echo "For example, if your domain is 'myserver.sandcats.io', just enter 'myserver'."
+    echo ""
+    sandcats_recover_domain
+    return
+  fi
+
+  echo "OK. We will send a recovery token to the email address on file."
+  if ! prompt-yesno "OK to continue?" "yes"; then
+    echo "Aborted."
+    exit 0
+  fi
+
+  # Send recovery token request
+  local LOG_PATH="$SANDCATS_DIR/sendrecoverytoken-log"
+  mkdir -p "$SANDCATS_DIR"
+  touch "$LOG_PATH"
+  chmod 0640 "$LOG_PATH"
+
+  echo "Requesting recovery token..."
+  HTTP_STATUS=$(
+    dotdotdot_curl \
+      --silent \
+      --max-time 20 \
+      -A "$CURL_USER_AGENT" \
+      -X POST \
+      --data-urlencode "rawHostname=$DESIRED_SANDCATS_NAME" \
+      --output "$LOG_PATH" \
+      -w '%{http_code}' \
+      -H 'X-Sand: cats' \
+      -H "Accept: text/plain" \
+      "${SANDCATS_API_BASE}/sendrecoverytoken")
+
+  if [ "200" != "$HTTP_STATUS" ]; then
+    error "$(cat "$LOG_PATH")"
+    fail "E_SEND_TOKEN_FAILED" "Failed to request recovery token."
+  fi
+
+  cat "$LOG_PATH"
+  echo ''
+
+  TOKEN=$(prompt "Please enter the token that we sent to you by email." '')
+
+  if [ -z "$TOKEN" ]; then
+    fail "E_EMPTY_TOKEN" "Empty tokens are not valid."
+  fi
+
+  # Submit recovery token
+  LOG_PATH="$SANDCATS_DIR/recover-log"
+  touch "$LOG_PATH"
+  chmod 0640 "$LOG_PATH"
+
+  echo "Submitting recovery token..."
+  HTTP_STATUS=$(
+    dotdotdot_curl \
+      --silent \
+      --max-time 20 \
+      -A "$CURL_USER_AGENT" \
+      -X POST \
+      --data-urlencode "rawHostname=$DESIRED_SANDCATS_NAME" \
+      --data-urlencode "recoveryToken=$TOKEN" \
+      --output "$LOG_PATH" \
+      -w '%{http_code}' \
+      -H 'X-Sand: cats' \
+      -H "Accept: text/plain" \
+      --cert "$SANDCATS_DIR/id_rsa.private_combined" \
+      "${SANDCATS_API_BASE}/recover")
+
+  if [ "200" != "$HTTP_STATUS" ]; then
+    error "$(cat "$LOG_PATH")"
+    fail "E_RECOVER_FAILED" "Failed to recover domain."
+  fi
+
+  cat "$LOG_PATH"
+  echo ''
+
+  # Update DNS
+  LOG_PATH="$SANDCATS_DIR/update-log"
+  touch "$LOG_PATH"
+  chmod 0640 "$LOG_PATH"
+
+  echo "Updating DNS..."
+  HTTP_STATUS=$(
+    dotdotdot_curl \
+      --silent \
+      --max-time 20 \
+      -A "$CURL_USER_AGENT" \
+      -X POST \
+      --data-urlencode "rawHostname=$DESIRED_SANDCATS_NAME" \
+      --output "$LOG_PATH" \
+      -w '%{http_code}' \
+      -H 'X-Sand: cats' \
+      -H "Accept: text/plain" \
+      --cert "$SANDCATS_DIR/id_rsa.private_combined" \
+      "${SANDCATS_API_BASE}/update")
+
+  if [ "200" != "$HTTP_STATUS" ]; then
+    error "$(cat "$LOG_PATH")"
+    fail "E_UPDATE_FAILED" "Failed to update DNS."
+  fi
+
+  cat "$LOG_PATH"
+  echo ''
+
+  echo ""
+  echo "Congratulations! You have recovered ${DESIRED_SANDCATS_NAME}.${SANDCATS_BASE_DOMAIN}."
+  echo "Your credentials are in $SANDCATS_DIR; consider making a backup."
+  echo ""
+  echo "You may need to restart Sandstorm and/or renew your TLS certificate:"
+  echo "  sudo sandstorm restart"
+  echo "  sudo sandstorm renew-certificate"
+}
+
+main() {
+  if [ ! -t 1 ]; then
+    fail "E_NO_TTY" "This script is interactive. Please run it on a terminal."
+  fi
+
+  # Set up FD 3 for interactive input
+  exec 3<&1
+
+  if [ ! -d "$SANDSTORM_DIR" ]; then
+    fail "E_NO_DIR" "Sandstorm directory not found: $SANDSTORM_DIR"
+  fi
+
+  echo "Sandcats.io Domain Recovery"
+  echo "============================"
+  echo ""
+  echo "This script will help you recover access to a sandcats.io subdomain"
+  echo "that you previously registered. You will need access to the email"
+  echo "address you used when you registered the domain."
+  echo ""
+
+  sandcats_generate_keys
+  sandcats_recover_domain
+}
+
+main "$@"