Andrew's git - gitweb.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
   9static 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
  14static 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        const char *p;
  20
  21        if (!parse_oid_hex(name, &oid, &p)) {
  22                if (*p == ' ') {
  23                        /* <oid> <ref>, find refname */
  24                        name = p + 1;
  25                } else if (*p == '\0') {
  26                        ; /* <oid>, leave oid as name */
  27                } else {
  28                        /* <ref>, clear cruft from oid */
  29                        oidclr(&oid);
  30                }
  31        } else {
  32                /* <ref>, clear cruft from get_oid_hex */
  33                oidclr(&oid);
  34        }
  35
  36        ref = alloc_ref(name);
  37        oidcpy(&ref->old_oid, &oid);
  38        (*nr)++;
  39        ALLOC_GROW(*sought, *nr, *alloc);
  40        (*sought)[*nr - 1] = ref;
  41}
  42
  43int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
  44{
  45        int i, ret;
  46        struct ref *ref = NULL;
  47        const char *dest = NULL;
  48        struct ref **sought = NULL;
  49        int nr_sought = 0, alloc_sought = 0;
  50        int fd[2];
  51        char *pack_lockfile = NULL;
  52        char **pack_lockfile_ptr = NULL;
  53        struct child_process *conn;
  54        struct fetch_pack_args args;
  55        struct oid_array shallow = OID_ARRAY_INIT;
  56        struct string_list deepen_not = STRING_LIST_INIT_DUP;
  57        struct packet_reader reader;
  58        enum protocol_version version;
  59
  60        fetch_if_missing = 0;
  61
  62        packet_trace_identity("fetch-pack");
  63
  64        memset(&args, 0, sizeof(args));
  65        args.uploadpack = "git-upload-pack";
  66
  67        for (i = 1; i < argc && *argv[i] == '-'; i++) {
  68                const char *arg = argv[i];
  69
  70                if (skip_prefix(arg, "--upload-pack=", &arg)) {
  71                        args.uploadpack = arg;
  72                        continue;
  73                }
  74                if (skip_prefix(arg, "--exec=", &arg)) {
  75                        args.uploadpack = arg;
  76                        continue;
  77                }
  78                if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
  79                        args.quiet = 1;
  80                        continue;
  81                }
  82                if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
  83                        args.lock_pack = args.keep_pack;
  84                        args.keep_pack = 1;
  85                        continue;
  86                }
  87                if (!strcmp("--thin", arg)) {
  88                        args.use_thin_pack = 1;
  89                        continue;
  90                }
  91                if (!strcmp("--include-tag", arg)) {
  92                        args.include_tag = 1;
  93                        continue;
  94                }
  95                if (!strcmp("--all", arg)) {
  96                        args.fetch_all = 1;
  97                        continue;
  98                }
  99                if (!strcmp("--stdin", arg)) {
 100                        args.stdin_refs = 1;
 101                        continue;
 102                }
 103                if (!strcmp("--diag-url", arg)) {
 104                        args.diag_url = 1;
 105                        continue;
 106                }
 107                if (!strcmp("-v", arg)) {
 108                        args.verbose = 1;
 109                        continue;
 110                }
 111                if (skip_prefix(arg, "--depth=", &arg)) {
 112                        args.depth = strtol(arg, NULL, 0);
 113                        continue;
 114                }
 115                if (skip_prefix(arg, "--shallow-since=", &arg)) {
 116                        args.deepen_since = xstrdup(arg);
 117                        continue;
 118                }
 119                if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
 120                        string_list_append(&deepen_not, arg);
 121                        continue;
 122                }
 123                if (!strcmp(arg, "--deepen-relative")) {
 124                        args.deepen_relative = 1;
 125                        continue;
 126                }
 127                if (!strcmp("--no-progress", arg)) {
 128                        args.no_progress = 1;
 129                        continue;
 130                }
 131                if (!strcmp("--stateless-rpc", arg)) {
 132                        args.stateless_rpc = 1;
 133                        continue;
 134                }
 135                if (!strcmp("--lock-pack", arg)) {
 136                        args.lock_pack = 1;
 137                        pack_lockfile_ptr = &pack_lockfile;
 138                        continue;
 139                }
 140                if (!strcmp("--check-self-contained-and-connected", arg)) {
 141                        args.check_self_contained_and_connected = 1;
 142                        continue;
 143                }
 144                if (!strcmp("--cloning", arg)) {
 145                        args.cloning = 1;
 146                        continue;
 147                }
 148                if (!strcmp("--update-shallow", arg)) {
 149                        args.update_shallow = 1;
 150                        continue;
 151                }
 152                if (!strcmp("--from-promisor", arg)) {
 153                        args.from_promisor = 1;
 154                        continue;
 155                }
 156                if (!strcmp("--no-dependents", arg)) {
 157                        args.no_dependents = 1;
 158                        continue;
 159                }
 160                if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
 161                        parse_list_objects_filter(&args.filter_options, arg);
 162                        continue;
 163                }
 164                if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
 165                        list_objects_filter_set_no_filter(&args.filter_options);
 166                        continue;
 167                }
 168                usage(fetch_pack_usage);
 169        }
 170        if (deepen_not.nr)
 171                args.deepen_not = &deepen_not;
 172
 173        if (i < argc)
 174                dest = argv[i++];
 175        else
 176                usage(fetch_pack_usage);
 177
 178        /*
 179         * Copy refs from cmdline to growable list, then append any
 180         * refs from the standard input:
 181         */
 182        for (; i < argc; i++)
 183                add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 184        if (args.stdin_refs) {
 185                if (args.stateless_rpc) {
 186                        /* in stateless RPC mode we use pkt-line to read
 187                         * from stdin, until we get a flush packet
 188                         */
 189                        for (;;) {
 190                                char *line = packet_read_line(0, NULL);
 191                                if (!line)
 192                                        break;
 193                                add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 194                        }
 195                }
 196                else {
 197                        /* read from stdin one ref per line, until EOF */
 198                        struct strbuf line = STRBUF_INIT;
 199                        while (strbuf_getline_lf(&line, stdin) != EOF)
 200                                add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 201                        strbuf_release(&line);
 202                }
 203        }
 204
 205        if (args.stateless_rpc) {
 206                conn = NULL;
 207                fd[0] = 0;
 208                fd[1] = 1;
 209        } else {
 210                int flags = args.verbose ? CONNECT_VERBOSE : 0;
 211                if (args.diag_url)
 212                        flags |= CONNECT_DIAG_URL;
 213                conn = git_connect(fd, dest, args.uploadpack,
 214                                   flags);
 215                if (!conn)
 216                        return args.diag_url ? 0 : 1;
 217        }
 218
 219        packet_reader_init(&reader, fd[0], NULL, 0,
 220                           PACKET_READ_CHOMP_NEWLINE |
 221                           PACKET_READ_GENTLE_ON_EOF |
 222                           PACKET_READ_DIE_ON_ERR_PACKET);
 223
 224        version = discover_version(&reader);
 225        switch (version) {
 226        case protocol_v2:
 227                get_remote_refs(fd[1], &reader, &ref, 0, NULL, NULL);
 228                break;
 229        case protocol_v1:
 230        case protocol_v0:
 231                get_remote_heads(&reader, &ref, 0, NULL, &shallow);
 232                break;
 233        case protocol_unknown_version:
 234                BUG("unknown protocol version");
 235        }
 236
 237        ref = fetch_pack(&args, fd, ref, sought, nr_sought,
 238                         &shallow, pack_lockfile_ptr, version);
 239        if (pack_lockfile) {
 240                printf("lock %s\n", pack_lockfile);
 241                fflush(stdout);
 242        }
 243        if (args.check_self_contained_and_connected &&
 244            args.self_contained_and_connected) {
 245                printf("connectivity-ok\n");
 246                fflush(stdout);
 247        }
 248        close(fd[0]);
 249        close(fd[1]);
 250        if (finish_connect(conn))
 251                return 1;
 252
 253        ret = !ref;
 254
 255        /*
 256         * If the heads to pull were given, we should have consumed
 257         * all of them by matching the remote.  Otherwise, 'git fetch
 258         * remote no-such-ref' would silently succeed without issuing
 259         * an error.
 260         */
 261        ret |= report_unmatched_refs(sought, nr_sought);
 262
 263        while (ref) {
 264                printf("%s %s\n",
 265                       oid_to_hex(&ref->old_oid), ref->name);
 266                ref = ref->next;
 267        }
 268
 269        return ret;
 270}