ssh-pull.c

   1 #include "cache.h"
   2 #include "commit.h"
   3 #include "rsh.h"
   4 #include "pull.h"
   5 #include "refs.h"
   6
   7 static int fd_in;
   8 static int fd_out;
   9
  10 static unsigned char remote_version = 0;
  11 static unsigned char local_version = 1;
  12
  13 void prefetch(unsigned char *sha1)
  14 {
  15 }
  16
  17 int fetch(unsigned char *sha1)
  18 {
  19         int ret;
  20         signed char remote;
  21         char type = 'o';
  22         if (has_sha1_file(sha1))
  23                 return 0;
  24         write(fd_out, &type, 1);
  25         write(fd_out, sha1, 20);
  26         if (read(fd_in, &remote, 1) < 1)
  27                 return -1;
  28         if (remote < 0)
  29                 return remote;
  30         ret = write_sha1_from_fd(sha1, fd_in);
  31         if (!ret)
  32                 pull_say("got %s\n", sha1_to_hex(sha1));
  33         return ret;
  34 }
  35
  36 static int get_version(void)
  37 {
  38         char type = 'v';
  39         write(fd_out, &type, 1);
  40         write(fd_out, &local_version, 1);
  41         if (read(fd_in, &remote_version, 1) < 1) {
  42                 return error("Couldn't read version from remote end");
  43         }
  44         return 0;
  45 }
  46
  47 int fetch_ref(char *ref, unsigned char *sha1)
  48 {
  49         signed char remote;
  50         char type = 'r';
  51         write(fd_out, &type, 1);
  52         write(fd_out, ref, strlen(ref) + 1);
  53         read(fd_in, &remote, 1);
  54         if (remote < 0)
  55                 return remote;
  56         read(fd_in, sha1, 20);
  57         return 0;
  58 }
  59
  60 int main(int argc, char **argv)
  61 {
  62         char *commit_id;
  63         char *url;
  64         int arg = 1;
  65         const char *prog = getenv("GIT_SSH_PUSH") ? : "git-ssh-push";
  66
  67         while (arg < argc && argv[arg][0] == '-') {
  68                 if (argv[arg][1] == 't') {
  69                         get_tree = 1;
  70                 } else if (argv[arg][1] == 'c') {
  71                         get_history = 1;
  72                 } else if (argv[arg][1] == 'a') {
  73                         get_all = 1;
  74                         get_tree = 1;
  75                         get_history = 1;
  76                 } else if (argv[arg][1] == 'v') {
  77                         get_verbosely = 1;
  78                 } else if (argv[arg][1] == 'w') {
  79                         write_ref = argv[arg + 1];
  80                         arg++;
  81                 }
  82                 arg++;
  83         }
  84         if (argc < arg + 2) {
  85                 usage("git-ssh-pull [-c] [-t] [-a] [-v] [-d] [--recover] [-w ref] commit-id url");
  86                 return 1;
  87         }
  88         commit_id = argv[arg];
  89         url = argv[arg + 1];
  90
  91         if (setup_connection(&fd_in, &fd_out, prog, url, arg, argv + 1))
  92                 return 1;
  93
  94         if (get_version())
  95                 return 1;
  96
  97         if (pull(commit_id))
  98                 return 1;
  99
 100         return 0;
 101 }