X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=rpull.c;h=f4ab89836455a40aaab3ff4114396185f6d5655a;hb=000182eacf99cde27d5916aa415921924b82972c;hp=8b3322fe0798d8d74c54817d020ff1478d4a25d4;hpb=4a62b61939396c512bd7592f800110bddf45af72;p=git.git

diff --git a/rpull.c b/rpull.c
index 8b3322fe..f4ab8983 100644
--- a/rpull.c
+++ b/rpull.c
@@ -6,16 +6,39 @@
 static int fd_in;
 static int fd_out;
 
+static unsigned char remote_version = 0;
+static unsigned char local_version = 1;
+
 int fetch(unsigned char *sha1)
 {
 	int ret;
+	signed char remote;
+	char type = 'o';
+	if (has_sha1_file(sha1))
+		return 0;
+	write(fd_out, &type, 1);
 	write(fd_out, sha1, 20);
+	if (read(fd_in, &remote, 1) < 1)
+		return -1;
+	if (remote < 0)
+		return remote;
 	ret = write_sha1_from_fd(sha1, fd_in);
 	if (!ret)
 		pull_say("got %s\n", sha1_to_hex(sha1));
 	return ret;
 }
 
+int get_version(void)
+{
+	char type = 'v';
+	write(fd_out, &type, 1);
+	write(fd_out, &local_version, 1);
+	if (read(fd_in, &remote_version, 1) < 1) {
+		return error("Couldn't read version from remote end");
+	}
+	return 0;
+}
+
 int main(int argc, char **argv)
 {
 	char *commit_id;
@@ -48,6 +71,9 @@ int main(int argc, char **argv)
 	if (setup_connection(&fd_in, &fd_out, "git-rpush", url, arg, argv + 1))
 		return 1;
 
+	if (get_version())
+		return 1;
+
 	if (pull(commit_id))
 		return 1;