Make specification of CVS module to convert optional.

[git.git] / ssh-push.c

diff --git a/ssh-push.c b/ssh-push.c
index 9994ea7..db69c88 100644 (file)
--- a/ssh-push.c
+++ b/ssh-push.c
@@ -1,7 +1,8 @@
 #include "cache.h"
 #include "rsh.h"
-#include <sys/socket.h>
-#include <errno.h>
+#include "refs.h"
+
+#include <string.h>
 
 unsigned char local_version = 1;
 unsigned char remote_version = 0;
@@ -9,7 +10,7 @@ unsigned char remote_version = 0;
 int serve_object(int fd_in, int fd_out) {
        ssize_t size;
        int posn = 0;
-       char sha1[20];
+       unsigned char sha1[20];
        unsigned long objsize;
        void *buf;
        signed char remote;
@@ -64,6 +65,27 @@ int serve_version(int fd_in, int fd_out)
        return 0;
 }
 
+int serve_ref(int fd_in, int fd_out)
+{
+       char ref[PATH_MAX];
+       unsigned char sha1[20];
+       int posn = 0;
+       signed char remote = 0;
+       do {
+               if (read(fd_in, ref + posn, 1) < 1)
+                       return -1;
+               posn++;
+       } while (ref[posn - 1]);
+       if (get_ref_sha1(ref, sha1))
+               remote = -1;
+       write(fd_out, &remote, 1);
+       if (remote)
+               return 0;
+       write(fd_out, sha1, 20);
+        return 0;
+}
+
+
 void service(int fd_in, int fd_out) {
        char type;
        int retval;
@@ -78,25 +100,39 @@ void service(int fd_in, int fd_out) {
                        return;
                if (type == 'o' && serve_object(fd_in, fd_out))
                        return;
+               if (type == 'r' && serve_ref(fd_in, fd_out))
+                       return;
        } while (1);
 }
 
+static const char *ssh_push_usage =
+       "git-ssh-push [-c] [-t] [-a] [-w ref] commit-id url";
+
 int main(int argc, char **argv)
 {
        int arg = 1;
         char *commit_id;
         char *url;
        int fd_in, fd_out;
+       const char *prog = getenv("GIT_SSH_PULL") ? : "git-ssh-pull";
+       unsigned char sha1[20];
+       char hex[41];
+
        while (arg < argc && argv[arg][0] == '-') {
+               if (argv[arg][1] == 'w')
+                       arg++;
                 arg++;
         }
-        if (argc < arg + 2) {
-               usage("git-ssh-push [-c] [-t] [-a] commit-id url");
-                return 1;
-        }
+       if (argc < arg + 2)
+               usage(ssh_push_usage);
        commit_id = argv[arg];
        url = argv[arg + 1];
-       if (setup_connection(&fd_in, &fd_out, "git-ssh-pull", url, arg, argv + 1))
+       if (get_sha1(commit_id, sha1))
+               usage(ssh_push_usage);
+       memcpy(hex, sha1_to_hex(sha1), sizeof(hex));
+       argv[arg] = hex;
+
+       if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1))
                return 1;
 
        service(fd_in, fd_out);