mirror of
https://github.com/git/git
synced 2024-08-25 02:35:46 +00:00
f71a69ab05
HPA reminded me that these programs knows about the name of the counterpart on the other end and simply symlinking the old name to new name locally would not be enough. Signed-off-by: Junio C Hamano <junkio@cox.net>
144 lines
2.8 KiB
C
144 lines
2.8 KiB
C
#ifndef COUNTERPART_ENV_NAME
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#define COUNTERPART_ENV_NAME "GIT_SSH_FETCH"
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#endif
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#ifndef COUNTERPART_PROGRAM_NAME
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#define COUNTERPART_PROGRAM_NAME "git-ssh-fetch"
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#endif
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#ifndef MY_PROGRAM_NAME
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#define MY_PROGRAM_NAME "git-ssh-upload"
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#endif
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#include "cache.h"
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#include "rsh.h"
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#include "refs.h"
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#include <string.h>
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static unsigned char local_version = 1;
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static unsigned char remote_version = 0;
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static int verbose = 0;
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static int serve_object(int fd_in, int fd_out) {
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ssize_t size;
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unsigned char sha1[20];
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signed char remote;
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int posn = 0;
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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-ssh-upload: read ");
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return -1;
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}
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if (!size)
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return -1;
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posn += size;
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} while (posn < 20);
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if (verbose)
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fprintf(stderr, "Serving %s\n", sha1_to_hex(sha1));
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remote = 0;
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if (!has_sha1_file(sha1)) {
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fprintf(stderr, "git-ssh-upload: could not find %s\n",
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sha1_to_hex(sha1));
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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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return write_sha1_to_fd(fd_out, sha1);
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}
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static 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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static int serve_ref(int fd_in, int fd_out)
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{
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char ref[PATH_MAX];
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unsigned char sha1[20];
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int posn = 0;
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signed char remote = 0;
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do {
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if (read(fd_in, ref + posn, 1) < 1)
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return -1;
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posn++;
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} while (ref[posn - 1]);
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if (verbose)
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fprintf(stderr, "Serving %s\n", ref);
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if (get_ref_sha1(ref, sha1))
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remote = -1;
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write(fd_out, &remote, 1);
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if (remote)
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return 0;
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write(fd_out, sha1, 20);
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return 0;
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}
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static 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("git-ssh-upload: 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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if (type == 'r' && serve_ref(fd_in, fd_out))
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return;
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} while (1);
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}
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static const char ssh_push_usage[] =
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MY_PROGRAM_NAME " [-c] [-t] [-a] [-w ref] commit-id url";
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int main(int argc, char **argv)
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{
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int arg = 1;
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char *commit_id;
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char *url;
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int fd_in, fd_out;
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const char *prog;
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unsigned char sha1[20];
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char hex[41];
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prog = getenv(COUNTERPART_ENV_NAME);
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if (!prog) prog = COUNTERPART_PROGRAM_NAME;
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while (arg < argc && argv[arg][0] == '-') {
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if (argv[arg][1] == 'w')
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arg++;
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arg++;
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}
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if (argc < arg + 2)
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usage(ssh_push_usage);
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commit_id = argv[arg];
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url = argv[arg + 1];
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if (get_sha1(commit_id, sha1))
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usage(ssh_push_usage);
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memcpy(hex, sha1_to_hex(sha1), sizeof(hex));
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argv[arg] = hex;
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if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1))
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return 1;
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service(fd_in, fd_out);
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return 0;
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}
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