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)) {
  20                 if (name[GIT_SHA1_HEXSZ] == ' ') {
  21                         /* <sha1> <ref>, find refname */
  22                         name += GIT_SHA1_HEXSZ + 1;
  23                 } else if (name[GIT_SHA1_HEXSZ] == '\0') {
  24                         ; /* <sha1>, leave sha1 as name */
  25                 } else {
  26                         /* <ref>, clear cruft from oid */
  27                         oidclr(&oid);
  28                 }
  29         } else {
  30                 /* <ref>, clear cruft from get_oid_hex */
  31                 oidclr(&oid);
  32         }
  33
  34         ref = alloc_ref(name);
  35         oidcpy(&ref->old_oid, &oid);
  36         (*nr)++;
  37         ALLOC_GROW(*sought, *nr, *alloc);
  38         (*sought)[*nr - 1] = ref;
  39 }
  40
  41 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
  42 {
  43         int i, ret;
  44         struct ref *ref = NULL;
  45         const char *dest = NULL;
  46         struct ref **sought = NULL;
  47         int nr_sought = 0, alloc_sought = 0;
  48         int fd[2];
  49         char *pack_lockfile = NULL;
  50         char **pack_lockfile_ptr = NULL;
  51         struct child_process *conn;
  52         struct fetch_pack_args args;
  53         struct sha1_array shallow = SHA1_ARRAY_INIT;
  54         struct string_list deepen_not = STRING_LIST_INIT_DUP;
  55
  56         packet_trace_identity("fetch-pack");
  57
  58         memset(&args, 0, sizeof(args));
  59         args.uploadpack = "git-upload-pack";
  60
  61         for (i = 1; i < argc && *argv[i] == '-'; i++) {
  62                 const char *arg = argv[i];
  63
  64                 if (skip_prefix(arg, "--upload-pack=", &arg)) {
  65                         args.uploadpack = arg;
  66                         continue;
  67                 }
  68                 if (skip_prefix(arg, "--exec=", &arg)) {
  69                         args.uploadpack = arg;
  70                         continue;
  71                 }
  72                 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
  73                         args.quiet = 1;
  74                         continue;
  75                 }
  76                 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
  77                         args.lock_pack = args.keep_pack;
  78                         args.keep_pack = 1;
  79                         continue;
  80                 }
  81                 if (!strcmp("--thin", arg)) {
  82                         args.use_thin_pack = 1;
  83                         continue;
  84                 }
  85                 if (!strcmp("--include-tag", arg)) {
  86                         args.include_tag = 1;
  87                         continue;
  88                 }
  89                 if (!strcmp("--all", arg)) {
  90                         args.fetch_all = 1;
  91                         continue;
  92                 }
  93                 if (!strcmp("--stdin", arg)) {
  94                         args.stdin_refs = 1;
  95                         continue;
  96                 }
  97                 if (!strcmp("--diag-url", arg)) {
  98                         args.diag_url = 1;
  99                         continue;
 100                 }
 101                 if (!strcmp("-v", arg)) {
 102                         args.verbose = 1;
 103                         continue;
 104                 }
 105                 if (skip_prefix(arg, "--depth=", &arg)) {
 106                         args.depth = strtol(arg, NULL, 0);
 107                         continue;
 108                 }
 109                 if (skip_prefix(arg, "--shallow-since=", &arg)) {
 110                         args.deepen_since = xstrdup(arg);
 111                         continue;
 112                 }
 113                 if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
 114                         string_list_append(&deepen_not, arg);
 115                         continue;
 116                 }
 117                 if (!strcmp(arg, "--deepen-relative")) {
 118                         args.deepen_relative = 1;
 119                         continue;
 120                 }
 121                 if (!strcmp("--no-progress", arg)) {
 122                         args.no_progress = 1;
 123                         continue;
 124                 }
 125                 if (!strcmp("--stateless-rpc", arg)) {
 126                         args.stateless_rpc = 1;
 127                         continue;
 128                 }
 129                 if (!strcmp("--lock-pack", arg)) {
 130                         args.lock_pack = 1;
 131                         pack_lockfile_ptr = &pack_lockfile;
 132                         continue;
 133                 }
 134                 if (!strcmp("--check-self-contained-and-connected", arg)) {
 135                         args.check_self_contained_and_connected = 1;
 136                         continue;
 137                 }
 138                 if (!strcmp("--cloning", arg)) {
 139                         args.cloning = 1;
 140                         continue;
 141                 }
 142                 if (!strcmp("--update-shallow", arg)) {
 143                         args.update_shallow = 1;
 144                         continue;
 145                 }
 146                 usage(fetch_pack_usage);
 147         }
 148         if (deepen_not.nr)
 149                 args.deepen_not = &deepen_not;
 150
 151         if (i < argc)
 152                 dest = argv[i++];
 153         else
 154                 usage(fetch_pack_usage);
 155
 156         /*
 157          * Copy refs from cmdline to growable list, then append any
 158          * refs from the standard input:
 159          */
 160         for (; i < argc; i++)
 161                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 162         if (args.stdin_refs) {
 163                 if (args.stateless_rpc) {
 164                         /* in stateless RPC mode we use pkt-line to read
 165                          * from stdin, until we get a flush packet
 166                          */
 167                         for (;;) {
 168                                 char *line = packet_read_line(0, NULL);
 169                                 if (!line)
 170                                         break;
 171                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 172                         }
 173                 }
 174                 else {
 175                         /* read from stdin one ref per line, until EOF */
 176                         struct strbuf line = STRBUF_INIT;
 177                         while (strbuf_getline_lf(&line, stdin) != EOF)
 178                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 179                         strbuf_release(&line);
 180                 }
 181         }
 182
 183         if (args.stateless_rpc) {
 184                 conn = NULL;
 185                 fd[0] = 0;
 186                 fd[1] = 1;
 187         } else {
 188                 int flags = args.verbose ? CONNECT_VERBOSE : 0;
 189                 if (args.diag_url)
 190                         flags |= CONNECT_DIAG_URL;
 191                 conn = git_connect(fd, dest, args.uploadpack,
 192                                    flags);
 193                 if (!conn)
 194                         return args.diag_url ? 0 : 1;
 195         }
 196         get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);
 197
 198         ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
 199                          &shallow, pack_lockfile_ptr);
 200         if (pack_lockfile) {
 201                 printf("lock %s\n", pack_lockfile);
 202                 fflush(stdout);
 203         }
 204         if (args.check_self_contained_and_connected &&
 205             args.self_contained_and_connected) {
 206                 printf("connectivity-ok\n");
 207                 fflush(stdout);
 208         }
 209         close(fd[0]);
 210         close(fd[1]);
 211         if (finish_connect(conn))
 212                 return 1;
 213
 214         ret = !ref;
 215
 216         /*
 217          * If the heads to pull were given, we should have consumed
 218          * all of them by matching the remote.  Otherwise, 'git fetch
 219          * remote no-such-ref' would silently succeed without issuing
 220          * an error.
 221          */
 222         ret |= report_unmatched_refs(sought, nr_sought);
 223
 224         while (ref) {
 225                 printf("%s %s\n",
 226                        oid_to_hex(&ref->old_oid), ref->name);
 227                 ref = ref->next;
 228         }
 229
 230         return ret;
 231 }