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 oid_array shallow = OID_ARRAY_INIT;
  54         struct string_list deepen_not = STRING_LIST_INIT_DUP;
  55
  56         fetch_if_missing = 0;
  57
  58         packet_trace_identity("fetch-pack");
  59
  60         memset(&args, 0, sizeof(args));
  61         args.uploadpack = "git-upload-pack";
  62
  63         for (i = 1; i < argc && *argv[i] == '-'; i++) {
  64                 const char *arg = argv[i];
  65
  66                 if (skip_prefix(arg, "--upload-pack=", &arg)) {
  67                         args.uploadpack = arg;
  68                         continue;
  69                 }
  70                 if (skip_prefix(arg, "--exec=", &arg)) {
  71                         args.uploadpack = arg;
  72                         continue;
  73                 }
  74                 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
  75                         args.quiet = 1;
  76                         continue;
  77                 }
  78                 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
  79                         args.lock_pack = args.keep_pack;
  80                         args.keep_pack = 1;
  81                         continue;
  82                 }
  83                 if (!strcmp("--thin", arg)) {
  84                         args.use_thin_pack = 1;
  85                         continue;
  86                 }
  87                 if (!strcmp("--include-tag", arg)) {
  88                         args.include_tag = 1;
  89                         continue;
  90                 }
  91                 if (!strcmp("--all", arg)) {
  92                         args.fetch_all = 1;
  93                         continue;
  94                 }
  95                 if (!strcmp("--stdin", arg)) {
  96                         args.stdin_refs = 1;
  97                         continue;
  98                 }
  99                 if (!strcmp("--diag-url", arg)) {
 100                         args.diag_url = 1;
 101                         continue;
 102                 }
 103                 if (!strcmp("-v", arg)) {
 104                         args.verbose = 1;
 105                         continue;
 106                 }
 107                 if (skip_prefix(arg, "--depth=", &arg)) {
 108                         args.depth = strtol(arg, NULL, 0);
 109                         continue;
 110                 }
 111                 if (skip_prefix(arg, "--shallow-since=", &arg)) {
 112                         args.deepen_since = xstrdup(arg);
 113                         continue;
 114                 }
 115                 if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
 116                         string_list_append(&deepen_not, arg);
 117                         continue;
 118                 }
 119                 if (!strcmp(arg, "--deepen-relative")) {
 120                         args.deepen_relative = 1;
 121                         continue;
 122                 }
 123                 if (!strcmp("--no-progress", arg)) {
 124                         args.no_progress = 1;
 125                         continue;
 126                 }
 127                 if (!strcmp("--stateless-rpc", arg)) {
 128                         args.stateless_rpc = 1;
 129                         continue;
 130                 }
 131                 if (!strcmp("--lock-pack", arg)) {
 132                         args.lock_pack = 1;
 133                         pack_lockfile_ptr = &pack_lockfile;
 134                         continue;
 135                 }
 136                 if (!strcmp("--check-self-contained-and-connected", arg)) {
 137                         args.check_self_contained_and_connected = 1;
 138                         continue;
 139                 }
 140                 if (!strcmp("--cloning", arg)) {
 141                         args.cloning = 1;
 142                         continue;
 143                 }
 144                 if (!strcmp("--update-shallow", arg)) {
 145                         args.update_shallow = 1;
 146                         continue;
 147                 }
 148                 if (!strcmp("--from-promisor", arg)) {
 149                         args.from_promisor = 1;
 150                         continue;
 151                 }
 152                 if (!strcmp("--no-dependents", arg)) {
 153                         args.no_dependents = 1;
 154                         continue;
 155                 }
 156                 if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
 157                         parse_list_objects_filter(&args.filter_options, arg);
 158                         continue;
 159                 }
 160                 if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
 161                         list_objects_filter_set_no_filter(&args.filter_options);
 162                         continue;
 163                 }
 164                 usage(fetch_pack_usage);
 165         }
 166         if (deepen_not.nr)
 167                 args.deepen_not = &deepen_not;
 168
 169         if (i < argc)
 170                 dest = argv[i++];
 171         else
 172                 usage(fetch_pack_usage);
 173
 174         /*
 175          * Copy refs from cmdline to growable list, then append any
 176          * refs from the standard input:
 177          */
 178         for (; i < argc; i++)
 179                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 180         if (args.stdin_refs) {
 181                 if (args.stateless_rpc) {
 182                         /* in stateless RPC mode we use pkt-line to read
 183                          * from stdin, until we get a flush packet
 184                          */
 185                         for (;;) {
 186                                 char *line = packet_read_line(0, NULL);
 187                                 if (!line)
 188                                         break;
 189                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 190                         }
 191                 }
 192                 else {
 193                         /* read from stdin one ref per line, until EOF */
 194                         struct strbuf line = STRBUF_INIT;
 195                         while (strbuf_getline_lf(&line, stdin) != EOF)
 196                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 197                         strbuf_release(&line);
 198                 }
 199         }
 200
 201         if (args.stateless_rpc) {
 202                 conn = NULL;
 203                 fd[0] = 0;
 204                 fd[1] = 1;
 205         } else {
 206                 int flags = args.verbose ? CONNECT_VERBOSE : 0;
 207                 if (args.diag_url)
 208                         flags |= CONNECT_DIAG_URL;
 209                 conn = git_connect(fd, dest, args.uploadpack,
 210                                    flags);
 211                 if (!conn)
 212                         return args.diag_url ? 0 : 1;
 213         }
 214         get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);
 215
 216         ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
 217                          &shallow, pack_lockfile_ptr);
 218         if (pack_lockfile) {
 219                 printf("lock %s\n", pack_lockfile);
 220                 fflush(stdout);
 221         }
 222         if (args.check_self_contained_and_connected &&
 223             args.self_contained_and_connected) {
 224                 printf("connectivity-ok\n");
 225                 fflush(stdout);
 226         }
 227         close(fd[0]);
 228         close(fd[1]);
 229         if (finish_connect(conn))
 230                 return 1;
 231
 232         ret = !ref;
 233
 234         /*
 235          * If the heads to pull were given, we should have consumed
 236          * all of them by matching the remote.  Otherwise, 'git fetch
 237          * remote no-such-ref' would silently succeed without issuing
 238          * an error.
 239          */
 240         ret |= report_unmatched_refs(sought, nr_sought);
 241
 242         while (ref) {
 243                 printf("%s %s\n",
 244                        oid_to_hex(&ref->old_oid), ref->name);
 245                 ref = ref->next;
 246         }
 247
 248         return ret;
 249 }