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
  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
  42int 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        fetch_if_missing = 0;
  59
  60        packet_trace_identity("fetch-pack");
  61
  62        memset(&args, 0, sizeof(args));
  63        args.uploadpack = "git-upload-pack";
  64
  65        for (i = 1; i < argc && *argv[i] == '-'; i++) {
  66                const char *arg = argv[i];
  67
  68                if (skip_prefix(arg, "--upload-pack=", &arg)) {
  69                        args.uploadpack = arg;
  70                        continue;
  71                }
  72                if (skip_prefix(arg, "--exec=", &arg)) {
  73                        args.uploadpack = arg;
  74                        continue;
  75                }
  76                if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
  77                        args.quiet = 1;
  78                        continue;
  79                }
  80                if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
  81                        args.lock_pack = args.keep_pack;
  82                        args.keep_pack = 1;
  83                        continue;
  84                }
  85                if (!strcmp("--thin", arg)) {
  86                        args.use_thin_pack = 1;
  87                        continue;
  88                }
  89                if (!strcmp("--include-tag", arg)) {
  90                        args.include_tag = 1;
  91                        continue;
  92                }
  93                if (!strcmp("--all", arg)) {
  94                        args.fetch_all = 1;
  95                        continue;
  96                }
  97                if (!strcmp("--stdin", arg)) {
  98                        args.stdin_refs = 1;
  99                        continue;
 100                }
 101                if (!strcmp("--diag-url", arg)) {
 102                        args.diag_url = 1;
 103                        continue;
 104                }
 105                if (!strcmp("-v", arg)) {
 106                        args.verbose = 1;
 107                        continue;
 108                }
 109                if (skip_prefix(arg, "--depth=", &arg)) {
 110                        args.depth = strtol(arg, NULL, 0);
 111                        continue;
 112                }
 113                if (skip_prefix(arg, "--shallow-since=", &arg)) {
 114                        args.deepen_since = xstrdup(arg);
 115                        continue;
 116                }
 117                if (skip_prefix(arg, "--shallow-exclude=", &arg)) {
 118                        string_list_append(&deepen_not, arg);
 119                        continue;
 120                }
 121                if (!strcmp(arg, "--deepen-relative")) {
 122                        args.deepen_relative = 1;
 123                        continue;
 124                }
 125                if (!strcmp("--no-progress", arg)) {
 126                        args.no_progress = 1;
 127                        continue;
 128                }
 129                if (!strcmp("--stateless-rpc", arg)) {
 130                        args.stateless_rpc = 1;
 131                        continue;
 132                }
 133                if (!strcmp("--lock-pack", arg)) {
 134                        args.lock_pack = 1;
 135                        pack_lockfile_ptr = &pack_lockfile;
 136                        continue;
 137                }
 138                if (!strcmp("--check-self-contained-and-connected", arg)) {
 139                        args.check_self_contained_and_connected = 1;
 140                        continue;
 141                }
 142                if (!strcmp("--cloning", arg)) {
 143                        args.cloning = 1;
 144                        continue;
 145                }
 146                if (!strcmp("--update-shallow", arg)) {
 147                        args.update_shallow = 1;
 148                        continue;
 149                }
 150                if (!strcmp("--from-promisor", arg)) {
 151                        args.from_promisor = 1;
 152                        continue;
 153                }
 154                if (!strcmp("--no-dependents", arg)) {
 155                        args.no_dependents = 1;
 156                        continue;
 157                }
 158                if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
 159                        parse_list_objects_filter(&args.filter_options, arg);
 160                        continue;
 161                }
 162                if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
 163                        list_objects_filter_set_no_filter(&args.filter_options);
 164                        continue;
 165                }
 166                usage(fetch_pack_usage);
 167        }
 168        if (deepen_not.nr)
 169                args.deepen_not = &deepen_not;
 170
 171        if (i < argc)
 172                dest = argv[i++];
 173        else
 174                usage(fetch_pack_usage);
 175
 176        /*
 177         * Copy refs from cmdline to growable list, then append any
 178         * refs from the standard input:
 179         */
 180        for (; i < argc; i++)
 181                add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 182        if (args.stdin_refs) {
 183                if (args.stateless_rpc) {
 184                        /* in stateless RPC mode we use pkt-line to read
 185                         * from stdin, until we get a flush packet
 186                         */
 187                        for (;;) {
 188                                char *line = packet_read_line(0, NULL);
 189                                if (!line)
 190                                        break;
 191                                add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 192                        }
 193                }
 194                else {
 195                        /* read from stdin one ref per line, until EOF */
 196                        struct strbuf line = STRBUF_INIT;
 197                        while (strbuf_getline_lf(&line, stdin) != EOF)
 198                                add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 199                        strbuf_release(&line);
 200                }
 201        }
 202
 203        if (args.stateless_rpc) {
 204                conn = NULL;
 205                fd[0] = 0;
 206                fd[1] = 1;
 207        } else {
 208                int flags = args.verbose ? CONNECT_VERBOSE : 0;
 209                if (args.diag_url)
 210                        flags |= CONNECT_DIAG_URL;
 211                conn = git_connect(fd, dest, args.uploadpack,
 212                                   flags);
 213                if (!conn)
 214                        return args.diag_url ? 0 : 1;
 215        }
 216
 217        packet_reader_init(&reader, fd[0], NULL, 0,
 218                           PACKET_READ_CHOMP_NEWLINE |
 219                           PACKET_READ_GENTLE_ON_EOF);
 220
 221        switch (discover_version(&reader)) {
 222        case protocol_v2:
 223                die("support for protocol v2 not implemented yet");
 224        case protocol_v1:
 225        case protocol_v0:
 226                get_remote_heads(&reader, &ref, 0, NULL, &shallow);
 227                break;
 228        case protocol_unknown_version:
 229                BUG("unknown protocol version");
 230        }
 231
 232        ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
 233                         &shallow, pack_lockfile_ptr, protocol_v0);
 234        if (pack_lockfile) {
 235                printf("lock %s\n", pack_lockfile);
 236                fflush(stdout);
 237        }
 238        if (args.check_self_contained_and_connected &&
 239            args.self_contained_and_connected) {
 240                printf("connectivity-ok\n");
 241                fflush(stdout);
 242        }
 243        close(fd[0]);
 244        close(fd[1]);
 245        if (finish_connect(conn))
 246                return 1;
 247
 248        ret = !ref;
 249
 250        /*
 251         * If the heads to pull were given, we should have consumed
 252         * all of them by matching the remote.  Otherwise, 'git fetch
 253         * remote no-such-ref' would silently succeed without issuing
 254         * an error.
 255         */
 256        ret |= report_unmatched_refs(sought, nr_sought);
 257
 258        while (ref) {
 259                printf("%s %s\n",
 260                       oid_to_hex(&ref->old_oid), ref->name);
 261                ref = ref->next;
 262        }
 263
 264        return ret;
 265}