Big tool rename.

[git.git] / ssh-upload.c

diff --git a/ssh-upload.c b/ssh-upload.c
new file mode 100644 (file)
index 0000000..10a3687
--- /dev/null
+++ b/ssh-upload.c
@@ -0,0 +1,133 @@
+#include "cache.h"
+#include "rsh.h"
+#include "refs.h"
+
+#include <string.h>
+
+static unsigned char local_version = 1;
+static unsigned char remote_version = 0;
+
+static int verbose = 0;
+
+static int serve_object(int fd_in, int fd_out) {
+       ssize_t size;
+       unsigned char sha1[20];
+       signed char remote;
+       int posn = 0;
+       do {
+               size = read(fd_in, sha1 + posn, 20 - posn);
+               if (size < 0) {
+                       perror("git-ssh-upload: read ");
+                       return -1;
+               }
+               if (!size)
+                       return -1;
+               posn += size;
+       } while (posn < 20);
+       
+       if (verbose)
+               fprintf(stderr, "Serving %s\n", sha1_to_hex(sha1));
+
+       remote = 0;
+       
+       if (!has_sha1_file(sha1)) {
+               fprintf(stderr, "git-ssh-upload: could not find %s\n",
+                       sha1_to_hex(sha1));
+               remote = -1;
+       }
+       
+       write(fd_out, &remote, 1);
+       
+       if (remote < 0)
+               return 0;
+       
+       return write_sha1_to_fd(fd_out, sha1);
+}
+
+static int serve_version(int fd_in, int fd_out)
+{
+       if (read(fd_in, &remote_version, 1) < 1)
+               return -1;
+       write(fd_out, &local_version, 1);
+       return 0;
+}
+
+static 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 (verbose)
+               fprintf(stderr, "Serving %s\n", ref);
+
+       if (get_ref_sha1(ref, sha1))
+               remote = -1;
+       write(fd_out, &remote, 1);
+       if (remote)
+               return 0;
+       write(fd_out, sha1, 20);
+        return 0;
+}
+
+
+static void service(int fd_in, int fd_out) {
+       char type;
+       int retval;
+       do {
+               retval = read(fd_in, &type, 1);
+               if (retval < 1) {
+                       if (retval < 0)
+                               perror("git-ssh-upload: read ");
+                       return;
+               }
+               if (type == 'v' && serve_version(fd_in, 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-upload [-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;
+       unsigned char sha1[20];
+       char hex[41];
+
+       prog = getenv("GIT_SSH_PULL");
+       if (!prog) prog = "git-ssh-fetch";
+       while (arg < argc && argv[arg][0] == '-') {
+               if (argv[arg][1] == 'w')
+                       arg++;
+                arg++;
+        }
+       if (argc < arg + 2)
+               usage(ssh_push_usage);
+       commit_id = argv[arg];
+       url = argv[arg + 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);
+       return 0;
+}