git.oblomov.eu Git - git/blob - 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 #include "protocol.h"
   8
   9 static const char fetch_pack_usage[] =
  10 "git fetch-pack [--all] [--stdin] [--quiet | -q] [--keep | -k] [--thin] "
  11 "[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
  12 "[--no-progress] [--diag-url] [-v] [<host>:]<directory> [<refs>...]";
  13
  14 static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
  15                              const char *name)
  16 {
  17         struct ref *ref;
  18         struct object_id oid;
  19
  20         if (!get_oid_hex(name, &oid)) {
  21                 if (name[GIT_SHA1_HEXSZ] == ' ') {
  22                         /* <sha1> <ref>, find refname */
  23                         name += GIT_SHA1_HEXSZ + 1;
  24                 } else if (name[GIT_SHA1_HEXSZ] == '\0') {
  25                         ; /* <sha1>, leave sha1 as name */
  26                 } else {
  27                         /* <ref>, clear cruft from oid */
  28                         oidclr(&oid);
  29                 }
  30         } else {
  31                 /* <ref>, clear cruft from get_oid_hex */
  32                 oidclr(&oid);
  33         }
  34
  35         ref = alloc_ref(name);
  36         oidcpy(&ref->old_oid, &oid);
  37         (*nr)++;
  38         ALLOC_GROW(*sought, *nr, *alloc);
  39         (*sought)[*nr - 1] = ref;
  40 }
  41
  42 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
  43 {
  44         int i, ret;
  45         struct ref *ref = NULL;
  46         const char *dest = NULL;
  47         struct ref **sought = NULL;
  48         int nr_sought = 0, alloc_sought = 0;
  49         int fd[2];
  50         char *pack_lockfile = NULL;
  51         char **pack_lockfile_ptr = NULL;
  52         struct child_process *conn;
  53         struct fetch_pack_args args;
  54         struct oid_array shallow = OID_ARRAY_INIT;
  55         struct string_list deepen_not = STRING_LIST_INIT_DUP;
  56         struct packet_reader reader;
  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                 usage(fetch_pack_usage);
 149         }
 150         if (deepen_not.nr)
 151                 args.deepen_not = &deepen_not;
 152
 153         if (i < argc)
 154                 dest = argv[i++];
 155         else
 156                 usage(fetch_pack_usage);
 157
 158         /*
 159          * Copy refs from cmdline to growable list, then append any
 160          * refs from the standard input:
 161          */
 162         for (; i < argc; i++)
 163                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 164         if (args.stdin_refs) {
 165                 if (args.stateless_rpc) {
 166                         /* in stateless RPC mode we use pkt-line to read
 167                          * from stdin, until we get a flush packet
 168                          */
 169                         for (;;) {
 170                                 char *line = packet_read_line(0, NULL);
 171                                 if (!line)
 172                                         break;
 173                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 174                         }
 175                 }
 176                 else {
 177                         /* read from stdin one ref per line, until EOF */
 178                         struct strbuf line = STRBUF_INIT;
 179                         while (strbuf_getline_lf(&line, stdin) != EOF)
 180                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 181                         strbuf_release(&line);
 182                 }
 183         }
 184
 185         if (args.stateless_rpc) {
 186                 conn = NULL;
 187                 fd[0] = 0;
 188                 fd[1] = 1;
 189         } else {
 190                 int flags = args.verbose ? CONNECT_VERBOSE : 0;
 191                 if (args.diag_url)
 192                         flags |= CONNECT_DIAG_URL;
 193                 conn = git_connect(fd, dest, args.uploadpack,
 194                                    flags);
 195                 if (!conn)
 196                         return args.diag_url ? 0 : 1;
 197         }
 198
 199         packet_reader_init(&reader, fd[0], NULL, 0,
 200                            PACKET_READ_CHOMP_NEWLINE |
 201                            PACKET_READ_GENTLE_ON_EOF);
 202
 203         switch (discover_version(&reader)) {
 204         case protocol_v2:
 205                 die("support for protocol v2 not implemented yet");
 206         case protocol_v1:
 207         case protocol_v0:
 208                 get_remote_heads(&reader, &ref, 0, NULL, &shallow);
 209                 break;
 210         case protocol_unknown_version:
 211                 BUG("unknown protocol version");
 212         }
 213
 214         ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
 215                          &shallow, pack_lockfile_ptr);
 216         if (pack_lockfile) {
 217                 printf("lock %s\n", pack_lockfile);
 218                 fflush(stdout);
 219         }
 220         if (args.check_self_contained_and_connected &&
 221             args.self_contained_and_connected) {
 222                 printf("connectivity-ok\n");
 223                 fflush(stdout);
 224         }
 225         close(fd[0]);
 226         close(fd[1]);
 227         if (finish_connect(conn))
 228                 return 1;
 229
 230         ret = !ref;
 231
 232         /*
 233          * If the heads to pull were given, we should have consumed
 234          * all of them by matching the remote.  Otherwise, 'git fetch
 235          * remote no-such-ref' would silently succeed without issuing
 236          * an error.
 237          */
 238         ret |= report_unmatched_refs(sought, nr_sought);
 239
 240         while (ref) {
 241                 printf("%s %s\n",
 242                        oid_to_hex(&ref->old_oid), ref->name);
 243                 ref = ref->next;
 244         }
 245
 246         return ret;
 247 }