builtin/fetch-pack.c

   1 #include "builtin.h"
   2 #include "pkt-line.h"
   3 #include "fetch-pack.h"
   4 #include "remote.h"
   5 #include "connect.h"
   6 #include "sha1-array.h"
   7
   8 static const char fetch_pack_usage[] =
   9 "git fetch-pack [--all] [--stdin] [--quiet | -q] [--keep | -k] [--thin] "
  10 "[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
  11 "[--no-progress] [--diag-url] [-v] [<host>:]<directory> [<refs>...]";
  12
  13 static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
  14                              const char *name)
  15 {
  16         struct ref *ref;
  17         struct object_id oid;
  18
  19         if (!get_oid_hex(name, &oid) && name[GIT_SHA1_HEXSZ] == ' ')
  20                 name += GIT_SHA1_HEXSZ + 1;
  21         else
  22                 oidclr(&oid);
  23
  24         ref = alloc_ref(name);
  25         oidcpy(&ref->old_oid, &oid);
  26         (*nr)++;
  27         ALLOC_GROW(*sought, *nr, *alloc);
  28         (*sought)[*nr - 1] = ref;
  29 }
  30
  31 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
  32 {
  33         int i, ret;
  34         struct ref *ref = NULL;
  35         const char *dest = NULL;
  36         struct ref **sought = NULL;
  37         int nr_sought = 0, alloc_sought = 0;
  38         int fd[2];
  39         char *pack_lockfile = NULL;
  40         char **pack_lockfile_ptr = NULL;
  41         struct child_process *conn;
  42         struct fetch_pack_args args;
  43         struct sha1_array shallow = SHA1_ARRAY_INIT;
  44
  45         packet_trace_identity("fetch-pack");
  46
  47         memset(&args, 0, sizeof(args));
  48         args.uploadpack = "git-upload-pack";
  49
  50         for (i = 1; i < argc && *argv[i] == '-'; i++) {
  51                 const char *arg = argv[i];
  52
  53                 if (starts_with(arg, "--upload-pack=")) {
  54                         args.uploadpack = arg + 14;
  55                         continue;
  56                 }
  57                 if (starts_with(arg, "--exec=")) {
  58                         args.uploadpack = arg + 7;
  59                         continue;
  60                 }
  61                 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
  62                         args.quiet = 1;
  63                         continue;
  64                 }
  65                 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
  66                         args.lock_pack = args.keep_pack;
  67                         args.keep_pack = 1;
  68                         continue;
  69                 }
  70                 if (!strcmp("--thin", arg)) {
  71                         args.use_thin_pack = 1;
  72                         continue;
  73                 }
  74                 if (!strcmp("--include-tag", arg)) {
  75                         args.include_tag = 1;
  76                         continue;
  77                 }
  78                 if (!strcmp("--all", arg)) {
  79                         args.fetch_all = 1;
  80                         continue;
  81                 }
  82                 if (!strcmp("--stdin", arg)) {
  83                         args.stdin_refs = 1;
  84                         continue;
  85                 }
  86                 if (!strcmp("--diag-url", arg)) {
  87                         args.diag_url = 1;
  88                         continue;
  89                 }
  90                 if (!strcmp("-v", arg)) {
  91                         args.verbose = 1;
  92                         continue;
  93                 }
  94                 if (starts_with(arg, "--depth=")) {
  95                         args.depth = strtol(arg + 8, NULL, 0);
  96                         continue;
  97                 }
  98                 if (!strcmp("--no-progress", arg)) {
  99                         args.no_progress = 1;
 100                         continue;
 101                 }
 102                 if (!strcmp("--stateless-rpc", arg)) {
 103                         args.stateless_rpc = 1;
 104                         continue;
 105                 }
 106                 if (!strcmp("--lock-pack", arg)) {
 107                         args.lock_pack = 1;
 108                         pack_lockfile_ptr = &pack_lockfile;
 109                         continue;
 110                 }
 111                 if (!strcmp("--check-self-contained-and-connected", arg)) {
 112                         args.check_self_contained_and_connected = 1;
 113                         continue;
 114                 }
 115                 if (!strcmp("--cloning", arg)) {
 116                         args.cloning = 1;
 117                         continue;
 118                 }
 119                 if (!strcmp("--update-shallow", arg)) {
 120                         args.update_shallow = 1;
 121                         continue;
 122                 }
 123                 usage(fetch_pack_usage);
 124         }
 125
 126         if (i < argc)
 127                 dest = argv[i++];
 128         else
 129                 usage(fetch_pack_usage);
 130
 131         /*
 132          * Copy refs from cmdline to growable list, then append any
 133          * refs from the standard input:
 134          */
 135         for (; i < argc; i++)
 136                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 137         if (args.stdin_refs) {
 138                 if (args.stateless_rpc) {
 139                         /* in stateless RPC mode we use pkt-line to read
 140                          * from stdin, until we get a flush packet
 141                          */
 142                         for (;;) {
 143                                 char *line = packet_read_line(0, NULL);
 144                                 if (!line)
 145                                         break;
 146                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 147                         }
 148                 }
 149                 else {
 150                         /* read from stdin one ref per line, until EOF */
 151                         struct strbuf line = STRBUF_INIT;
 152                         while (strbuf_getline_lf(&line, stdin) != EOF)
 153                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 154                         strbuf_release(&line);
 155                 }
 156         }
 157
 158         if (args.stateless_rpc) {
 159                 conn = NULL;
 160                 fd[0] = 0;
 161                 fd[1] = 1;
 162         } else {
 163                 int flags = args.verbose ? CONNECT_VERBOSE : 0;
 164                 if (args.diag_url)
 165                         flags |= CONNECT_DIAG_URL;
 166                 conn = git_connect(fd, dest, args.uploadpack,
 167                                    flags);
 168                 if (!conn)
 169                         return args.diag_url ? 0 : 1;
 170         }
 171         get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);
 172
 173         ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
 174                          &shallow, pack_lockfile_ptr);
 175         if (pack_lockfile) {
 176                 printf("lock %s\n", pack_lockfile);
 177                 fflush(stdout);
 178         }
 179         if (args.check_self_contained_and_connected &&
 180             args.self_contained_and_connected) {
 181                 printf("connectivity-ok\n");
 182                 fflush(stdout);
 183         }
 184         close(fd[0]);
 185         close(fd[1]);
 186         if (finish_connect(conn))
 187                 return 1;
 188
 189         ret = !ref;
 190
 191         /*
 192          * If the heads to pull were given, we should have consumed
 193          * all of them by matching the remote.  Otherwise, 'git fetch
 194          * remote no-such-ref' would silently succeed without issuing
 195          * an error.
 196          */
 197         for (i = 0; i < nr_sought; i++) {
 198                 if (!sought[i] || sought[i]->matched)
 199                         continue;
 200                 error("no such remote ref %s", sought[i]->name);
 201                 ret = 1;
 202         }
 203
 204         while (ref) {
 205                 printf("%s %s\n",
 206                        oid_to_hex(&ref->old_oid), ref->name);
 207                 ref = ref->next;
 208         }
 209
 210         return ret;
 211 }