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
   8static 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
  13static 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
  41int 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}