ssh-pull.c

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