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proxy-command support for git://

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Here is an updated patch that first looks for GIT_PROXY_COMMAND
in the environment and then git.proxycommand in the repository's
configuration file.  I have left the calling convention the same
argv[1] is the host and argv[2] is the port.

I've taken the hostname parsing verbatim from git_tcp_connect(),
so it should now support an explicit port number and whatever
that business with the square brackets is.  (Should I move this
to a helper function?)

Regarding internal vs. external hosts, the proxy command can
simply run netcat locally to internal hosts, so perhaps that is
sufficient.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Paul Collins 2005-11-04 14:57:16 +00:00 committed by Junio C Hamano
parent ce335fe04f
commit f801477645
1 changed files with 71 additions and 1 deletions
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72
connect.c
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@ -448,6 +448,73 @@ static int git_tcp_connect(int fd[2], const char *prog, char *host, char *path)
#endif /* NO_IPV6 */
static char *git_proxy_command = NULL;
static int git_proxy_command_options(const char *var, const char *value)
{
if (git_proxy_command == NULL) {
if (!strcmp(var, "git.proxycommand")) {
git_proxy_command = xmalloc(strlen(value) + 1);
strcpy(git_proxy_command, value);
return 0;
}
}
return git_default_config(var, value);
}
static int git_use_proxy(void)
{
git_proxy_command = getenv("GIT_PROXY_COMMAND");
git_config(git_proxy_command_options);
return git_proxy_command != NULL;
}
static int git_proxy_connect(int fd[2], const char *prog, char *host, char *path)
{
char *port = STR(DEFAULT_GIT_PORT);
char *colon, *end;
int pipefd[2][2];
pid_t pid;
if (host[0] == '[') {
end = strchr(host + 1, ']');
if (end) {
*end = 0;
end++;
host++;
} else
end = host;
} else
end = host;
colon = strchr(end, ':');
if (colon) {
*colon = 0;
port = colon + 1;
}
if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
die("unable to create pipe pair for communication");
pid = fork();
if (!pid) {
dup2(pipefd[1][0], 0);
dup2(pipefd[0][1], 1);
close(pipefd[0][0]);
close(pipefd[0][1]);
close(pipefd[1][0]);
close(pipefd[1][1]);
execlp(git_proxy_command, git_proxy_command, host, port, NULL);
die("exec failed");
}
fd[0] = pipefd[0][0];
fd[1] = pipefd[1][1];
close(pipefd[0][1]);
close(pipefd[1][0]);
packet_write(fd[1], "%s %s\n", prog, path);
return pid;
}
/*
* Yeah, yeah, fixme. Need to pass in the heads etc.
*/
@ -493,8 +560,11 @@ int git_connect(int fd[2], char *url, const char *prog)
*ptr = '\0';
}
if (protocol == PROTO_GIT)
if (protocol == PROTO_GIT) {
if (git_use_proxy())
return git_proxy_connect(fd, prog, host, path);
return git_tcp_connect(fd, prog, host, path);
}
if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
die("unable to create pipe pair for communication");