[PATCH] ssh-protocol version, command types, response code
This patch makes an incompatible change to the protocol used by rpull/rpush which will let it be extended in the future without incompatible changes. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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26
rpull.c
26
rpull.c
@ -6,16 +6,39 @@
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static int fd_in;
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static int fd_out;
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static unsigned char remote_version = 0;
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static unsigned char local_version = 1;
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int fetch(unsigned char *sha1)
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{
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int ret;
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signed char remote;
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char type = 'o';
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if (has_sha1_file(sha1))
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return 0;
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write(fd_out, &type, 1);
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write(fd_out, sha1, 20);
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if (read(fd_in, &remote, 1) < 1)
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return -1;
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if (remote < 0)
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return remote;
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ret = write_sha1_from_fd(sha1, fd_in);
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if (!ret)
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pull_say("got %s\n", sha1_to_hex(sha1));
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return ret;
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}
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int get_version(void)
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{
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char type = 'v';
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write(fd_out, &type, 1);
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write(fd_out, &local_version, 1);
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if (read(fd_in, &remote_version, 1) < 1) {
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return error("Couldn't read version from remote end");
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}
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return 0;
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}
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int main(int argc, char **argv)
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{
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char *commit_id;
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@ -48,6 +71,9 @@ int main(int argc, char **argv)
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if (setup_connection(&fd_in, &fd_out, "git-rpush", url, arg, argv + 1))
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return 1;
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if (get_version())
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return 1;
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if (pull(commit_id))
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return 1;
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53
rpush.c
53
rpush.c
@ -3,33 +3,43 @@
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#include <sys/socket.h>
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#include <errno.h>
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static void service(int fd_in, int fd_out) {
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unsigned char local_version = 1;
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unsigned char remote_version = 0;
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int serve_object(int fd_in, int fd_out) {
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ssize_t size;
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int posn;
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char unsigned sha1[20];
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int posn = 0;
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char sha1[20];
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unsigned long objsize;
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void *buf;
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do {
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posn = 0;
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signed char remote;
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do {
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size = read(fd_in, sha1 + posn, 20 - posn);
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if (size < 0) {
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perror("git-rpush: read ");
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return;
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return -1;
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}
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if (!size)
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return;
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return -1;
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posn += size;
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} while (posn < 20);
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/* fprintf(stderr, "Serving %s\n", sha1_to_hex(sha1)); */
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remote = 0;
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buf = map_sha1_file(sha1, &objsize);
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if (!buf) {
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fprintf(stderr, "git-rpush: could not find %s\n",
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sha1_to_hex(sha1));
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return;
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remote = -1;
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}
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write(fd_out, &remote, 1);
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if (remote < 0)
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return 0;
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posn = 0;
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do {
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size = write(fd_out, buf + posn, objsize - posn);
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@ -39,10 +49,35 @@ static void service(int fd_in, int fd_out) {
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} else {
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perror("git-rpush: write ");
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}
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return;
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return -1;
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}
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posn += size;
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} while (posn < objsize);
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return 0;
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}
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int serve_version(int fd_in, int fd_out)
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{
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if (read(fd_in, &remote_version, 1) < 1)
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return -1;
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write(fd_out, &local_version, 1);
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return 0;
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}
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void service(int fd_in, int fd_out) {
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char type;
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int retval;
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do {
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retval = read(fd_in, &type, 1);
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if (retval < 1) {
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if (retval < 0)
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perror("rpush: read ");
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return;
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}
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if (type == 'v' && serve_version(fd_in, fd_out))
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return;
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if (type == 'o' && serve_object(fd_in, fd_out))
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return;
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} while (1);
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}
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