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
   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_mem(struct ref ***sought, int *nr, int *alloc,
  14                                  const char *name, int namelen)
  15 {
  16         struct ref *ref = xcalloc(1, sizeof(*ref) + namelen + 1);
  17         struct object_id oid;
  18         const int chunksz = GIT_SHA1_HEXSZ + 1;
  19
  20         if (namelen > chunksz && name[chunksz - 1] == ' ' &&
  21                 !get_oid_hex(name, &oid)) {
  22                 oidcpy(&ref->old_oid, &oid);
  23                 name += chunksz;
  24                 namelen -= chunksz;
  25         }
  26
  27         memcpy(ref->name, name, namelen);
  28         ref->name[namelen] = '\0';
  29         (*nr)++;
  30         ALLOC_GROW(*sought, *nr, *alloc);
  31         (*sought)[*nr - 1] = ref;
  32 }
  33
  34 static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
  35                              const char *string)
  36 {
  37         add_sought_entry_mem(sought, nr, alloc, string, strlen(string));
  38 }
  39
  40 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
  41 {
  42         int i, ret;
  43         struct ref *ref = NULL;
  44         const char *dest = NULL;
  45         struct ref **sought = NULL;
  46         int nr_sought = 0, alloc_sought = 0;
  47         int fd[2];
  48         char *pack_lockfile = NULL;
  49         char **pack_lockfile_ptr = NULL;
  50         struct child_process *conn;
  51         struct fetch_pack_args args;
  52         struct sha1_array shallow = SHA1_ARRAY_INIT;
  53         struct string_list deepen_not = STRING_LIST_INIT_DUP;
  54
  55         packet_trace_identity("fetch-pack");
  56
  57         memset(&args, 0, sizeof(args));
  58         args.uploadpack = "git-upload-pack";
  59
  60         for (i = 1; i < argc && *argv[i] == '-'; i++) {
  61                 const char *arg = argv[i];
  62
  63                 if (skip_prefix(arg, "--upload-pack=", &arg)) {
  64                         args.uploadpack = arg;
  65                         continue;
  66                 }
  67                 if (skip_prefix(arg, "--exec=", &arg)) {
  68                         args.uploadpack = arg;
  69                         continue;
  70                 }
  71                 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
  72                         args.quiet = 1;
  73                         continue;
  74                 }
  75                 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
  76                         args.lock_pack = args.keep_pack;
  77                         args.keep_pack = 1;
  78                         continue;
  79                 }
  80                 if (!strcmp("--thin", arg)) {
  81                         args.use_thin_pack = 1;
  82                         continue;
  83                 }
  84                 if (!strcmp("--include-tag", arg)) {
  85                         args.include_tag = 1;
  86                         continue;
  87                 }
  88                 if (!strcmp("--all", arg)) {
  89                         args.fetch_all = 1;
  90                         continue;
  91                 }
  92                 if (!strcmp("--stdin", arg)) {
  93                         args.stdin_refs = 1;
  94                         continue;
  95                 }
  96                 if (!strcmp("--diag-url", arg)) {
  97                         args.diag_url = 1;
  98                         continue;
  99                 }
 100                 if (!strcmp("-v", arg)) {
 101                         args.verbose = 1;
 102                         continue;
 103                 }
 104                 if (skip_prefix(arg, "--depth=", &arg)) {
 105                         args.depth = strtol(arg, NULL, 0);
 106                         continue;
 107                 }
 108                 if (skip_prefix(arg, "--shallow-since=", &arg)) {
 109                         args.deepen_since = xstrdup(arg);
 110                         continue;
 111                 }
 112                 if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
 113                         string_list_append(&deepen_not, arg);
 114                         continue;
 115                 }
 116                 if (!strcmp(arg, "--deepen-relative")) {
 117                         args.deepen_relative = 1;
 118                         continue;
 119                 }
 120                 if (!strcmp("--no-progress", arg)) {
 121                         args.no_progress = 1;
 122                         continue;
 123                 }
 124                 if (!strcmp("--stateless-rpc", arg)) {
 125                         args.stateless_rpc = 1;
 126                         continue;
 127                 }
 128                 if (!strcmp("--lock-pack", arg)) {
 129                         args.lock_pack = 1;
 130                         pack_lockfile_ptr = &pack_lockfile;
 131                         continue;
 132                 }
 133                 if (!strcmp("--check-self-contained-and-connected", arg)) {
 134                         args.check_self_contained_and_connected = 1;
 135                         continue;
 136                 }
 137                 if (!strcmp("--cloning", arg)) {
 138                         args.cloning = 1;
 139                         continue;
 140                 }
 141                 if (!strcmp("--update-shallow", arg)) {
 142                         args.update_shallow = 1;
 143                         continue;
 144                 }
 145                 usage(fetch_pack_usage);
 146         }
 147         if (deepen_not.nr)
 148                 args.deepen_not = &deepen_not;
 149
 150         if (i < argc)
 151                 dest = argv[i++];
 152         else
 153                 usage(fetch_pack_usage);
 154
 155         /*
 156          * Copy refs from cmdline to growable list, then append any
 157          * refs from the standard input:
 158          */
 159         for (; i < argc; i++)
 160                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 161         if (args.stdin_refs) {
 162                 if (args.stateless_rpc) {
 163                         /* in stateless RPC mode we use pkt-line to read
 164                          * from stdin, until we get a flush packet
 165                          */
 166                         for (;;) {
 167                                 char *line = packet_read_line(0, NULL);
 168                                 if (!line)
 169                                         break;
 170                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 171                         }
 172                 }
 173                 else {
 174                         /* read from stdin one ref per line, until EOF */
 175                         struct strbuf line = STRBUF_INIT;
 176                         while (strbuf_getline_lf(&line, stdin) != EOF)
 177                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 178                         strbuf_release(&line);
 179                 }
 180         }
 181
 182         if (args.stateless_rpc) {
 183                 conn = NULL;
 184                 fd[0] = 0;
 185                 fd[1] = 1;
 186         } else {
 187                 int flags = args.verbose ? CONNECT_VERBOSE : 0;
 188                 if (args.diag_url)
 189                         flags |= CONNECT_DIAG_URL;
 190                 conn = git_connect(fd, dest, args.uploadpack,
 191                                    flags);
 192                 if (!conn)
 193                         return args.diag_url ? 0 : 1;
 194         }
 195         get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);
 196
 197         ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
 198                          &shallow, pack_lockfile_ptr);
 199         if (pack_lockfile) {
 200                 printf("lock %s\n", pack_lockfile);
 201                 fflush(stdout);
 202         }
 203         if (args.check_self_contained_and_connected &&
 204             args.self_contained_and_connected) {
 205                 printf("connectivity-ok\n");
 206                 fflush(stdout);
 207         }
 208         close(fd[0]);
 209         close(fd[1]);
 210         if (finish_connect(conn))
 211                 return 1;
 212
 213         ret = !ref;
 214
 215         /*
 216          * If the heads to pull were given, we should have consumed
 217          * all of them by matching the remote.  Otherwise, 'git fetch
 218          * remote no-such-ref' would silently succeed without issuing
 219          * an error.
 220          */
 221         for (i = 0; i < nr_sought; i++) {
 222                 if (!sought[i] || sought[i]->matched)
 223                         continue;
 224                 error("no such remote ref %s", sought[i]->name);
 225                 ret = 1;
 226         }
 227
 228         while (ref) {
 229                 printf("%s %s\n",
 230                        oid_to_hex(&ref->old_oid), ref->name);
 231                 ref = ref->next;
 232         }
 233
 234         return ret;
 235 }