git-ssh-push/pull: usability improvements

Allow traditional ssh path specifiers (host:path), and let the user
override the command name on the other end.

With this, I can push to kernel.org with this script

	export GIT_SSH_PULL=/home/torvalds/bin/git-ssh-pull
	git-ssh-push -a -v -w heads/master heads/master master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

which while not pretty is at least workable.

rsh.c

@@ -8,7 +8,7 @@
 
 #define COMMAND_SIZE 4096
 
-int setup_connection(int *fd_in, int *fd_out, char *remote_prog, 
+int setup_connection(int *fd_in, int *fd_out, const char *remote_prog, 
 		     char *url, int rmt_argc, char **rmt_argv)
 {
 	char *host;
@@ -25,11 +25,13 @@ int setup_connection(int *fd_in, int *fd_out, char *remote_prog,
 	}
 
 	host = strstr(url, "//");
-	if (!host) {
-		return error("Bad URL: %s", url);
+	if (host) {
+		host += 2;
+		path = strchr(host, '/');
+	} else {
+		host = url;
+		path = strchr(host, ':');
 	}
-	host += 2;
-	path = strchr(host, '/');
 	if (!path) {
 		return error("Bad URL: %s", url);
 	}

rsh.h

@@ -1,7 +1,7 @@
 #ifndef RSH_H
 #define RSH_H
 
-int setup_connection(int *fd_in, int *fd_out, char *remote_prog, 
+int setup_connection(int *fd_in, int *fd_out, const char *remote_prog, 
 		     char *url, int rmt_argc, char **rmt_argv);
 
 #endif

ssh-pull.c

@@ -58,6 +58,7 @@ int main(int argc, char **argv)
 	char *commit_id;
 	char *url;
 	int arg = 1;
+	const char *prog = getenv("GIT_SSH_PUSH") ? : "git-ssh-push";
 
 	while (arg < argc && argv[arg][0] == '-') {
 		if (argv[arg][1] == 't') {
@@ -87,7 +88,7 @@ int main(int argc, char **argv)
 	commit_id = argv[arg];
 	url = argv[arg + 1];
 
-	if (setup_connection(&fd_in, &fd_out, "git-ssh-push", url, arg, argv + 1))
+	if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1))
 		return 1;
 
 	if (get_version())

ssh-push.c

@@ -109,6 +109,8 @@ int main(int argc, char **argv)
         char *commit_id;
         char *url;
 	int fd_in, fd_out;
+	const char *prog = getenv("GIT_SSH_PULL") ? : "git-ssh-pull";
+
 	while (arg < argc && argv[arg][0] == '-') {
 		if (argv[arg][1] == 'w')
 			arg++;
@@ -120,7 +122,7 @@ int main(int argc, char **argv)
         }
 	commit_id = argv[arg];
 	url = argv[arg + 1];
-	if (setup_connection(&fd_in, &fd_out, "git-ssh-pull", url, arg, argv + 1))
+	if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1))
 		return 1;
 
 	service(fd_in, fd_out);