portlivecheck: add livecheck.user_agent option

doc/portfile.7

@@ -1136,6 +1136,16 @@ Whether to ignore the host SSL certificate (for HTTPS).
 .Sy Default:
 .Em no
 .br
+.It Ic fetch.user_agent
+HTTP User-Agent to use when fetching the resource.
+Useful for servers that block requests from the default curl user agent.
+.br
+.Sy Type:
+.Em optional
+.br
+.Sy Default:
+.Em \&""
+.br
 .El
 .Ss FETCHING FROM CVS
 As an alternative to fetching distribution files, pulling the sources from a
@@ -2281,6 +2291,15 @@ md5 sum to use for md5 comparison.
 .br
 .Sy Type:
 .Em optional
+.It Ic livecheck.user_agent
+HTTP User-Agent to use when fetching the livecheck resource.
+Useful for servers that block requests from the default curl user agent.
+.br
+.Sy Type:
+.Em optional
+.br
+.Sy Default:
+.Em \&""
 .El
 .Sh VARIANT OPTIONS
 MacPorts allows for conditional modification to be specified in a

src/port1.0/port_test_autoconf.tcl.in

@@ -16,7 +16,7 @@
 # 3. Neither the name of Apple 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

src/port1.0/portlivecheck.tcl

@@ -45,7 +45,7 @@ namespace eval portlivecheck {
 }
 
 # define options
-options livecheck.url livecheck.type livecheck.md5 livecheck.regex livecheck.branch livecheck.name livecheck.distname livecheck.version livecheck.ignore_sslcert livecheck.compression livecheck.curloptions
+options livecheck.url livecheck.type livecheck.md5 livecheck.regex livecheck.branch livecheck.name livecheck.distname livecheck.version livecheck.ignore_sslcert livecheck.compression livecheck.curloptions livecheck.user_agent
 
 # defaults
 default livecheck.url {$homepage}
@@ -59,6 +59,7 @@ default livecheck.version {$version}
 default livecheck.ignore_sslcert no
 default livecheck.compression yes
 default livecheck.curloptions [list --append-http-header "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"]
+default livecheck.user_agent {}
 
 proc portlivecheck::livecheck_async_start {} {
     _livecheck_main yes
@@ -82,6 +83,7 @@ proc portlivecheck::_livecheck_main {{async no}} {
            livecheck.ignore_sslcert \
            livecheck.compression \
            livecheck.curloptions \
+           livecheck.user_agent \
            git.cmd \
            homepage portpath \
            master_sites name subport
@@ -141,6 +143,10 @@ proc portlivecheck::_livecheck_main {{async no}} {
     if {[tbool livecheck.compression]} {
         lappend curl_options "--enable-compression"
     }
+    if {${livecheck.user_agent} ne ""} {
+        lappend curl_options "--user-agent"
+        lappend curl_options "${livecheck.user_agent}"
+    }
 
     # Check _resources/port1.0/livecheck for available types.
     set types_dir [getdefaultportresourcepath "port1.0/livecheck"]