Currently, core.gitProxy doesn't actually match purely on domain names
as documented: it also matches ports.

So a core.gitProxy value like "script for kernel.org" doesn't make the
script called for an url like git://kernel.org:port/path, while it is
called for git://kernel.org/path.

This per-port behavior seems like an oversight rather than a deliberate
choice, so, make git://kernel.org:port/path call the gitProxy script in
the case described above.

However, if people have been relying on this behavior, git now fails
with an error message inviting for a configuration change.

Signed-off-by: Mike Hommey <m...@glandium.org>
---
 connect.c              | 20 +++++++++++++++++---
 t/t5532-fetch-proxy.sh |  8 +++++++-
 2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/connect.c b/connect.c
index d3448c2..0f48cde 100644
--- a/connect.c
+++ b/connect.c
@@ -490,6 +490,8 @@ static void git_tcp_connect(int fd[2], const char *host, 
const char *port,
 }
 
 
+static char *get_port(char *host);
+
 static char *git_proxy_command;
 
 static int git_proxy_command_options(const char *var, const char *value,
@@ -517,10 +519,14 @@ static int git_proxy_command_options(const char *var, 
const char *value,
                        /* matches everybody */
                        matchlen = strlen(value);
                else {
-                       hostlen = strlen(for_pos + 5);
+                       struct strbuf host = STRBUF_INIT;
+                       char *port;
+                       strbuf_addstr(&host, for_pos + 5);
+                       port = get_port(host.buf);
+                       hostlen = strlen(host.buf);
                        if (rhost_len < hostlen)
                                matchlen = -1;
-                       else if (!strncmp(for_pos + 5,
+                       else if (!strncmp(host.buf,
                                          rhost_name + rhost_len - hostlen,
                                          hostlen) &&
                                 ((rhost_len == hostlen) ||
@@ -528,6 +534,14 @@ static int git_proxy_command_options(const char *var, 
const char *value,
                                matchlen = for_pos - value;
                        else
                                matchlen = -1;
+                       if (matchlen > 0 && port)
+                               die("core.gitProxy only supports \"for "
+                                   "host/domain\", not \"for host:port\".\n"
+                                   "Please change your configuration "
+                                   "accordingly.\nPlease note that the port "
+                                   "is given as second argument to the proxy "
+                                   "script.\n");
+                       strbuf_release(&host);
                }
                if (0 <= matchlen) {
                        /* core.gitproxy = none for kernel.org */
@@ -706,7 +720,7 @@ struct child_process *git_connect(int fd[2], const char 
*url,
                /* These underlying connection commands die() if they
                 * cannot connect.
                 */
-               if (git_use_proxy(hostandport))
+               if (git_use_proxy(host))
                        conn = git_proxy_connect(fd, host, port);
                else
                        git_tcp_connect(fd, host, port, flags);
diff --git a/t/t5532-fetch-proxy.sh b/t/t5532-fetch-proxy.sh
index 51c9669..efa80f8 100755
--- a/t/t5532-fetch-proxy.sh
+++ b/t/t5532-fetch-proxy.sh
@@ -33,7 +33,9 @@ test_expect_success 'setup proxy script' '
 
 test_expect_success 'setup local repo' '
        git remote add fake git://example.com/remote &&
-       git config core.gitproxy ./proxy
+       git remote add fake_b git://example.org/remote &&
+       git config core.gitproxy "./proxy for example.com" &&
+       git config --add core.gitproxy "./proxy for example.org:9418"
 '
 
 test_expect_success 'fetch through proxy works' '
@@ -43,4 +45,8 @@ test_expect_success 'fetch through proxy works' '
        test_cmp expect actual
 '
 
+test_expect_success 'core.gitProxy with port fails' '
+       test_must_fail git fetch fake_b
+'
+
 test_done
-- 
2.8.2.411.ga570dec.dirty

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