Andrew's git / gitweb.git / transport.c
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transport.con commit Use an external program to implement fetching with curl (a2d725b)
   1#include "cache.h"
   2#include "transport.h"
   3#include "run-command.h"
   4#include "pkt-line.h"
   5#include "fetch-pack.h"
   6#include "send-pack.h"
   7#include "walker.h"
   8#include "bundle.h"
   9#include "dir.h"
  10#include "refs.h"
  11
  12/* rsync support */
  13
  14/*
  15 * We copy packed-refs and refs/ into a temporary file, then read the
  16 * loose refs recursively (sorting whenever possible), and then inserting
  17 * those packed refs that are not yet in the list (not validating, but
  18 * assuming that the file is sorted).
  19 *
  20 * Appears refactoring this from refs.c is too cumbersome.
  21 */
  22
  23static int str_cmp(const void *a, const void *b)
  24{
  25        const char *s1 = a;
  26        const char *s2 = b;
  27
  28        return strcmp(s1, s2);
  29}
  30
  31/* path->buf + name_offset is expected to point to "refs/" */
  32
  33static int read_loose_refs(struct strbuf *path, int name_offset,
  34                struct ref **tail)
  35{
  36        DIR *dir = opendir(path->buf);
  37        struct dirent *de;
  38        struct {
  39                char **entries;
  40                int nr, alloc;
  41        } list;
  42        int i, pathlen;
  43
  44        if (!dir)
  45                return -1;
  46
  47        memset (&list, 0, sizeof(list));
  48
  49        while ((de = readdir(dir))) {
  50                if (is_dot_or_dotdot(de->d_name))
  51                        continue;
  52                ALLOC_GROW(list.entries, list.nr + 1, list.alloc);
  53                list.entries[list.nr++] = xstrdup(de->d_name);
  54        }
  55        closedir(dir);
  56
  57        /* sort the list */
  58
  59        qsort(list.entries, list.nr, sizeof(char *), str_cmp);
  60
  61        pathlen = path->len;
  62        strbuf_addch(path, '/');
  63
  64        for (i = 0; i < list.nr; i++, strbuf_setlen(path, pathlen + 1)) {
  65                strbuf_addstr(path, list.entries[i]);
  66                if (read_loose_refs(path, name_offset, tail)) {
  67                        int fd = open(path->buf, O_RDONLY);
  68                        char buffer[40];
  69                        struct ref *next;
  70
  71                        if (fd < 0)
  72                                continue;
  73                        next = alloc_ref(path->buf + name_offset);
  74                        if (read_in_full(fd, buffer, 40) != 40 ||
  75                                        get_sha1_hex(buffer, next->old_sha1)) {
  76                                close(fd);
  77                                free(next);
  78                                continue;
  79                        }
  80                        close(fd);
  81                        (*tail)->next = next;
  82                        *tail = next;
  83                }
  84        }
  85        strbuf_setlen(path, pathlen);
  86
  87        for (i = 0; i < list.nr; i++)
  88                free(list.entries[i]);
  89        free(list.entries);
  90
  91        return 0;
  92}
  93
  94/* insert the packed refs for which no loose refs were found */
  95
  96static void insert_packed_refs(const char *packed_refs, struct ref **list)
  97{
  98        FILE *f = fopen(packed_refs, "r");
  99        static char buffer[PATH_MAX];
 100
 101        if (!f)
 102                return;
 103
 104        for (;;) {
 105                int cmp = cmp, len;
 106
 107                if (!fgets(buffer, sizeof(buffer), f)) {
 108                        fclose(f);
 109                        return;
 110                }
 111
 112                if (hexval(buffer[0]) > 0xf)
 113                        continue;
 114                len = strlen(buffer);
 115                if (len && buffer[len - 1] == '\n')
 116                        buffer[--len] = '\0';
 117                if (len < 41)
 118                        continue;
 119                while ((*list)->next &&
 120                                (cmp = strcmp(buffer + 41,
 121                                      (*list)->next->name)) > 0)
 122                        list = &(*list)->next;
 123                if (!(*list)->next || cmp < 0) {
 124                        struct ref *next = alloc_ref(buffer + 41);
 125                        buffer[40] = '\0';
 126                        if (get_sha1_hex(buffer, next->old_sha1)) {
 127                                warning ("invalid SHA-1: %s", buffer);
 128                                free(next);
 129                                continue;
 130                        }
 131                        next->next = (*list)->next;
 132                        (*list)->next = next;
 133                        list = &(*list)->next;
 134                }
 135        }
 136}
 137
 138static const char *rsync_url(const char *url)
 139{
 140        return prefixcmp(url, "rsync://") ? skip_prefix(url, "rsync:") : url;
 141}
 142
 143static struct ref *get_refs_via_rsync(struct transport *transport, int for_push)
 144{
 145        struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
 146        struct ref dummy, *tail = &dummy;
 147        struct child_process rsync;
 148        const char *args[5];
 149        int temp_dir_len;
 150
 151        if (for_push)
 152                return NULL;
 153
 154        /* copy the refs to the temporary directory */
 155
 156        strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
 157        if (!mkdtemp(temp_dir.buf))
 158                die_errno ("Could not make temporary directory");
 159        temp_dir_len = temp_dir.len;
 160
 161        strbuf_addstr(&buf, rsync_url(transport->url));
 162        strbuf_addstr(&buf, "/refs");
 163
 164        memset(&rsync, 0, sizeof(rsync));
 165        rsync.argv = args;
 166        rsync.stdout_to_stderr = 1;
 167        args[0] = "rsync";
 168        args[1] = (transport->verbose > 0) ? "-rv" : "-r";
 169        args[2] = buf.buf;
 170        args[3] = temp_dir.buf;
 171        args[4] = NULL;
 172
 173        if (run_command(&rsync))
 174                die ("Could not run rsync to get refs");
 175
 176        strbuf_reset(&buf);
 177        strbuf_addstr(&buf, rsync_url(transport->url));
 178        strbuf_addstr(&buf, "/packed-refs");
 179
 180        args[2] = buf.buf;
 181
 182        if (run_command(&rsync))
 183                die ("Could not run rsync to get refs");
 184
 185        /* read the copied refs */
 186
 187        strbuf_addstr(&temp_dir, "/refs");
 188        read_loose_refs(&temp_dir, temp_dir_len + 1, &tail);
 189        strbuf_setlen(&temp_dir, temp_dir_len);
 190
 191        tail = &dummy;
 192        strbuf_addstr(&temp_dir, "/packed-refs");
 193        insert_packed_refs(temp_dir.buf, &tail);
 194        strbuf_setlen(&temp_dir, temp_dir_len);
 195
 196        if (remove_dir_recursively(&temp_dir, 0))
 197                warning ("Error removing temporary directory %s.",
 198                                temp_dir.buf);
 199
 200        strbuf_release(&buf);
 201        strbuf_release(&temp_dir);
 202
 203        return dummy.next;
 204}
 205
 206static int fetch_objs_via_rsync(struct transport *transport,
 207                                int nr_objs, const struct ref **to_fetch)
 208{
 209        struct strbuf buf = STRBUF_INIT;
 210        struct child_process rsync;
 211        const char *args[8];
 212        int result;
 213
 214        strbuf_addstr(&buf, rsync_url(transport->url));
 215        strbuf_addstr(&buf, "/objects/");
 216
 217        memset(&rsync, 0, sizeof(rsync));
 218        rsync.argv = args;
 219        rsync.stdout_to_stderr = 1;
 220        args[0] = "rsync";
 221        args[1] = (transport->verbose > 0) ? "-rv" : "-r";
 222        args[2] = "--ignore-existing";
 223        args[3] = "--exclude";
 224        args[4] = "info";
 225        args[5] = buf.buf;
 226        args[6] = get_object_directory();
 227        args[7] = NULL;
 228
 229        /* NEEDSWORK: handle one level of alternates */
 230        result = run_command(&rsync);
 231
 232        strbuf_release(&buf);
 233
 234        return result;
 235}
 236
 237static int write_one_ref(const char *name, const unsigned char *sha1,
 238                int flags, void *data)
 239{
 240        struct strbuf *buf = data;
 241        int len = buf->len;
 242        FILE *f;
 243
 244        /* when called via for_each_ref(), flags is non-zero */
 245        if (flags && prefixcmp(name, "refs/heads/") &&
 246                        prefixcmp(name, "refs/tags/"))
 247                return 0;
 248
 249        strbuf_addstr(buf, name);
 250        if (safe_create_leading_directories(buf->buf) ||
 251                        !(f = fopen(buf->buf, "w")) ||
 252                        fprintf(f, "%s\n", sha1_to_hex(sha1)) < 0 ||
 253                        fclose(f))
 254                return error("problems writing temporary file %s", buf->buf);
 255        strbuf_setlen(buf, len);
 256        return 0;
 257}
 258
 259static int write_refs_to_temp_dir(struct strbuf *temp_dir,
 260                int refspec_nr, const char **refspec)
 261{
 262        int i;
 263
 264        for (i = 0; i < refspec_nr; i++) {
 265                unsigned char sha1[20];
 266                char *ref;
 267
 268                if (dwim_ref(refspec[i], strlen(refspec[i]), sha1, &ref) != 1)
 269                        return error("Could not get ref %s", refspec[i]);
 270
 271                if (write_one_ref(ref, sha1, 0, temp_dir)) {
 272                        free(ref);
 273                        return -1;
 274                }
 275                free(ref);
 276        }
 277        return 0;
 278}
 279
 280static int rsync_transport_push(struct transport *transport,
 281                int refspec_nr, const char **refspec, int flags)
 282{
 283        struct strbuf buf = STRBUF_INIT, temp_dir = STRBUF_INIT;
 284        int result = 0, i;
 285        struct child_process rsync;
 286        const char *args[10];
 287
 288        if (flags & TRANSPORT_PUSH_MIRROR)
 289                return error("rsync transport does not support mirror mode");
 290
 291        /* first push the objects */
 292
 293        strbuf_addstr(&buf, rsync_url(transport->url));
 294        strbuf_addch(&buf, '/');
 295
 296        memset(&rsync, 0, sizeof(rsync));
 297        rsync.argv = args;
 298        rsync.stdout_to_stderr = 1;
 299        i = 0;
 300        args[i++] = "rsync";
 301        args[i++] = "-a";
 302        if (flags & TRANSPORT_PUSH_DRY_RUN)
 303                args[i++] = "--dry-run";
 304        if (transport->verbose > 0)
 305                args[i++] = "-v";
 306        args[i++] = "--ignore-existing";
 307        args[i++] = "--exclude";
 308        args[i++] = "info";
 309        args[i++] = get_object_directory();
 310        args[i++] = buf.buf;
 311        args[i++] = NULL;
 312
 313        if (run_command(&rsync))
 314                return error("Could not push objects to %s",
 315                                rsync_url(transport->url));
 316
 317        /* copy the refs to the temporary directory; they could be packed. */
 318
 319        strbuf_addstr(&temp_dir, git_path("rsync-refs-XXXXXX"));
 320        if (!mkdtemp(temp_dir.buf))
 321                die_errno ("Could not make temporary directory");
 322        strbuf_addch(&temp_dir, '/');
 323
 324        if (flags & TRANSPORT_PUSH_ALL) {
 325                if (for_each_ref(write_one_ref, &temp_dir))
 326                        return -1;
 327        } else if (write_refs_to_temp_dir(&temp_dir, refspec_nr, refspec))
 328                return -1;
 329
 330        i = 2;
 331        if (flags & TRANSPORT_PUSH_DRY_RUN)
 332                args[i++] = "--dry-run";
 333        if (!(flags & TRANSPORT_PUSH_FORCE))
 334                args[i++] = "--ignore-existing";
 335        args[i++] = temp_dir.buf;
 336        args[i++] = rsync_url(transport->url);
 337        args[i++] = NULL;
 338        if (run_command(&rsync))
 339                result = error("Could not push to %s",
 340                                rsync_url(transport->url));
 341
 342        if (remove_dir_recursively(&temp_dir, 0))
 343                warning ("Could not remove temporary directory %s.",
 344                                temp_dir.buf);
 345
 346        strbuf_release(&buf);
 347        strbuf_release(&temp_dir);
 348
 349        return result;
 350}
 351
 352#ifndef NO_CURL
 353static int curl_transport_push(struct transport *transport, int refspec_nr, const char **refspec, int flags)
 354{
 355        const char **argv;
 356        int argc;
 357        int err;
 358
 359        if (flags & TRANSPORT_PUSH_MIRROR)
 360                return error("http transport does not support mirror mode");
 361
 362        argv = xmalloc((refspec_nr + 12) * sizeof(char *));
 363        argv[0] = "http-push";
 364        argc = 1;
 365        if (flags & TRANSPORT_PUSH_ALL)
 366                argv[argc++] = "--all";
 367        if (flags & TRANSPORT_PUSH_FORCE)
 368                argv[argc++] = "--force";
 369        if (flags & TRANSPORT_PUSH_DRY_RUN)
 370                argv[argc++] = "--dry-run";
 371        if (flags & TRANSPORT_PUSH_VERBOSE)
 372                argv[argc++] = "--verbose";
 373        argv[argc++] = transport->url;
 374        while (refspec_nr--)
 375                argv[argc++] = *refspec++;
 376        argv[argc] = NULL;
 377        err = run_command_v_opt(argv, RUN_GIT_CMD);
 378        switch (err) {
 379        case -ERR_RUN_COMMAND_FORK:
 380                error("unable to fork for %s", argv[0]);
 381        case -ERR_RUN_COMMAND_EXEC:
 382                error("unable to exec %s", argv[0]);
 383                break;
 384        case -ERR_RUN_COMMAND_WAITPID:
 385        case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
 386        case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
 387        case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
 388                error("%s died with strange error", argv[0]);
 389        }
 390        return !!err;
 391}
 392
 393#endif
 394
 395struct bundle_transport_data {
 396        int fd;
 397        struct bundle_header header;
 398};
 399
 400static struct ref *get_refs_from_bundle(struct transport *transport, int for_push)
 401{
 402        struct bundle_transport_data *data = transport->data;
 403        struct ref *result = NULL;
 404        int i;
 405
 406        if (for_push)
 407                return NULL;
 408
 409        if (data->fd > 0)
 410                close(data->fd);
 411        data->fd = read_bundle_header(transport->url, &data->header);
 412        if (data->fd < 0)
 413                die ("Could not read bundle '%s'.", transport->url);
 414        for (i = 0; i < data->header.references.nr; i++) {
 415                struct ref_list_entry *e = data->header.references.list + i;
 416                struct ref *ref = alloc_ref(e->name);
 417                hashcpy(ref->old_sha1, e->sha1);
 418                ref->next = result;
 419                result = ref;
 420        }
 421        return result;
 422}
 423
 424static int fetch_refs_from_bundle(struct transport *transport,
 425                               int nr_heads, const struct ref **to_fetch)
 426{
 427        struct bundle_transport_data *data = transport->data;
 428        return unbundle(&data->header, data->fd);
 429}
 430
 431static int close_bundle(struct transport *transport)
 432{
 433        struct bundle_transport_data *data = transport->data;
 434        if (data->fd > 0)
 435                close(data->fd);
 436        free(data);
 437        return 0;
 438}
 439
 440struct git_transport_data {
 441        unsigned thin : 1;
 442        unsigned keep : 1;
 443        unsigned followtags : 1;
 444        int depth;
 445        struct child_process *conn;
 446        int fd[2];
 447        const char *uploadpack;
 448        const char *receivepack;
 449        struct extra_have_objects extra_have;
 450};
 451
 452static int set_git_option(struct transport *connection,
 453                          const char *name, const char *value)
 454{
 455        struct git_transport_data *data = connection->data;
 456        if (!strcmp(name, TRANS_OPT_UPLOADPACK)) {
 457                data->uploadpack = value;
 458                return 0;
 459        } else if (!strcmp(name, TRANS_OPT_RECEIVEPACK)) {
 460                data->receivepack = value;
 461                return 0;
 462        } else if (!strcmp(name, TRANS_OPT_THIN)) {
 463                data->thin = !!value;
 464                return 0;
 465        } else if (!strcmp(name, TRANS_OPT_FOLLOWTAGS)) {
 466                data->followtags = !!value;
 467                return 0;
 468        } else if (!strcmp(name, TRANS_OPT_KEEP)) {
 469                data->keep = !!value;
 470                return 0;
 471        } else if (!strcmp(name, TRANS_OPT_DEPTH)) {
 472                if (!value)
 473                        data->depth = 0;
 474                else
 475                        data->depth = atoi(value);
 476                return 0;
 477        }
 478        return 1;
 479}
 480
 481static int connect_setup(struct transport *transport, int for_push, int verbose)
 482{
 483        struct git_transport_data *data = transport->data;
 484        data->conn = git_connect(data->fd, transport->url,
 485                                 for_push ? data->receivepack : data->uploadpack,
 486                                 verbose ? CONNECT_VERBOSE : 0);
 487        return 0;
 488}
 489
 490static struct ref *get_refs_via_connect(struct transport *transport, int for_push)
 491{
 492        struct git_transport_data *data = transport->data;
 493        struct ref *refs;
 494
 495        connect_setup(transport, for_push, 0);
 496        get_remote_heads(data->fd[0], &refs, 0, NULL,
 497                         for_push ? REF_NORMAL : 0, &data->extra_have);
 498
 499        return refs;
 500}
 501
 502static int fetch_refs_via_pack(struct transport *transport,
 503                               int nr_heads, const struct ref **to_fetch)
 504{
 505        struct git_transport_data *data = transport->data;
 506        char **heads = xmalloc(nr_heads * sizeof(*heads));
 507        char **origh = xmalloc(nr_heads * sizeof(*origh));
 508        const struct ref *refs;
 509        char *dest = xstrdup(transport->url);
 510        struct fetch_pack_args args;
 511        int i;
 512        struct ref *refs_tmp = NULL;
 513
 514        memset(&args, 0, sizeof(args));
 515        args.uploadpack = data->uploadpack;
 516        args.keep_pack = data->keep;
 517        args.lock_pack = 1;
 518        args.use_thin_pack = data->thin;
 519        args.include_tag = data->followtags;
 520        args.verbose = (transport->verbose > 0);
 521        args.quiet = (transport->verbose < 0);
 522        args.no_progress = args.quiet || (!transport->progress && !isatty(1));
 523        args.depth = data->depth;
 524
 525        for (i = 0; i < nr_heads; i++)
 526                origh[i] = heads[i] = xstrdup(to_fetch[i]->name);
 527
 528        if (!data->conn) {
 529                connect_setup(transport, 0, 0);
 530                get_remote_heads(data->fd[0], &refs_tmp, 0, NULL, 0, NULL);
 531        }
 532
 533        refs = fetch_pack(&args, data->fd, data->conn,
 534                          refs_tmp ? refs_tmp : transport->remote_refs,
 535                          dest, nr_heads, heads, &transport->pack_lockfile);
 536        close(data->fd[0]);
 537        close(data->fd[1]);
 538        if (finish_connect(data->conn))
 539                refs = NULL;
 540        data->conn = NULL;
 541
 542        free_refs(refs_tmp);
 543
 544        for (i = 0; i < nr_heads; i++)
 545                free(origh[i]);
 546        free(origh);
 547        free(heads);
 548        free(dest);
 549        return (refs ? 0 : -1);
 550}
 551
 552static int refs_pushed(struct ref *ref)
 553{
 554        for (; ref; ref = ref->next) {
 555                switch(ref->status) {
 556                case REF_STATUS_NONE:
 557                case REF_STATUS_UPTODATE:
 558                        break;
 559                default:
 560                        return 1;
 561                }
 562        }
 563        return 0;
 564}
 565
 566static void update_tracking_ref(struct remote *remote, struct ref *ref, int verbose)
 567{
 568        struct refspec rs;
 569
 570        if (ref->status != REF_STATUS_OK && ref->status != REF_STATUS_UPTODATE)
 571                return;
 572
 573        rs.src = ref->name;
 574        rs.dst = NULL;
 575
 576        if (!remote_find_tracking(remote, &rs)) {
 577                if (verbose)
 578                        fprintf(stderr, "updating local tracking ref '%s'\n", rs.dst);
 579                if (ref->deletion) {
 580                        delete_ref(rs.dst, NULL, 0);
 581                } else
 582                        update_ref("update by push", rs.dst,
 583                                        ref->new_sha1, NULL, 0, 0);
 584                free(rs.dst);
 585        }
 586}
 587
 588#define SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
 589
 590static void print_ref_status(char flag, const char *summary, struct ref *to, struct ref *from, const char *msg, int porcelain)
 591{
 592        if (porcelain) {
 593                if (from)
 594                        fprintf(stdout, "%c\t%s:%s\t", flag, from->name, to->name);
 595                else
 596                        fprintf(stdout, "%c\t:%s\t", flag, to->name);
 597                if (msg)
 598                        fprintf(stdout, "%s (%s)\n", summary, msg);
 599                else
 600                        fprintf(stdout, "%s\n", summary);
 601        } else {
 602                fprintf(stderr, " %c %-*s ", flag, SUMMARY_WIDTH, summary);
 603                if (from)
 604                        fprintf(stderr, "%s -> %s", prettify_refname(from->name), prettify_refname(to->name));
 605                else
 606                        fputs(prettify_refname(to->name), stderr);
 607                if (msg) {
 608                        fputs(" (", stderr);
 609                        fputs(msg, stderr);
 610                        fputc(')', stderr);
 611                }
 612                fputc('\n', stderr);
 613        }
 614}
 615
 616static const char *status_abbrev(unsigned char sha1[20])
 617{
 618        return find_unique_abbrev(sha1, DEFAULT_ABBREV);
 619}
 620
 621static void print_ok_ref_status(struct ref *ref, int porcelain)
 622{
 623        if (ref->deletion)
 624                print_ref_status('-', "[deleted]", ref, NULL, NULL, porcelain);
 625        else if (is_null_sha1(ref->old_sha1))
 626                print_ref_status('*',
 627                        (!prefixcmp(ref->name, "refs/tags/") ? "[new tag]" :
 628                        "[new branch]"),
 629                        ref, ref->peer_ref, NULL, porcelain);
 630        else {
 631                char quickref[84];
 632                char type;
 633                const char *msg;
 634
 635                strcpy(quickref, status_abbrev(ref->old_sha1));
 636                if (ref->nonfastforward) {
 637                        strcat(quickref, "...");
 638                        type = '+';
 639                        msg = "forced update";
 640                } else {
 641                        strcat(quickref, "..");
 642                        type = ' ';
 643                        msg = NULL;
 644                }
 645                strcat(quickref, status_abbrev(ref->new_sha1));
 646
 647                print_ref_status(type, quickref, ref, ref->peer_ref, msg, porcelain);
 648        }
 649}
 650
 651static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
 652{
 653        if (!count)
 654                fprintf(stderr, "To %s\n", dest);
 655
 656        switch(ref->status) {
 657        case REF_STATUS_NONE:
 658                print_ref_status('X', "[no match]", ref, NULL, NULL, porcelain);
 659                break;
 660        case REF_STATUS_REJECT_NODELETE:
 661                print_ref_status('!', "[rejected]", ref, NULL,
 662                                                 "remote does not support deleting refs", porcelain);
 663                break;
 664        case REF_STATUS_UPTODATE:
 665                print_ref_status('=', "[up to date]", ref,
 666                                                 ref->peer_ref, NULL, porcelain);
 667                break;
 668        case REF_STATUS_REJECT_NONFASTFORWARD:
 669                print_ref_status('!', "[rejected]", ref, ref->peer_ref,
 670                                                 "non-fast forward", porcelain);
 671                break;
 672        case REF_STATUS_REMOTE_REJECT:
 673                print_ref_status('!', "[remote rejected]", ref,
 674                                                 ref->deletion ? NULL : ref->peer_ref,
 675                                                 ref->remote_status, porcelain);
 676                break;
 677        case REF_STATUS_EXPECTING_REPORT:
 678                print_ref_status('!', "[remote failure]", ref,
 679                                                 ref->deletion ? NULL : ref->peer_ref,
 680                                                 "remote failed to report status", porcelain);
 681                break;
 682        case REF_STATUS_OK:
 683                print_ok_ref_status(ref, porcelain);
 684                break;
 685        }
 686
 687        return 1;
 688}
 689
 690static void print_push_status(const char *dest, struct ref *refs,
 691                                                          int verbose, int porcelain)
 692{
 693        struct ref *ref;
 694        int n = 0;
 695
 696        if (verbose) {
 697                for (ref = refs; ref; ref = ref->next)
 698                        if (ref->status == REF_STATUS_UPTODATE)
 699                                n += print_one_push_status(ref, dest, n, porcelain);
 700        }
 701
 702        for (ref = refs; ref; ref = ref->next)
 703                if (ref->status == REF_STATUS_OK)
 704                        n += print_one_push_status(ref, dest, n, porcelain);
 705
 706        for (ref = refs; ref; ref = ref->next) {
 707                if (ref->status != REF_STATUS_NONE &&
 708                    ref->status != REF_STATUS_UPTODATE &&
 709                    ref->status != REF_STATUS_OK)
 710                        n += print_one_push_status(ref, dest, n, porcelain);
 711        }
 712}
 713
 714static void verify_remote_names(int nr_heads, const char **heads)
 715{
 716        int i;
 717
 718        for (i = 0; i < nr_heads; i++) {
 719                const char *local = heads[i];
 720                const char *remote = strrchr(heads[i], ':');
 721
 722                if (*local == '+')
 723                        local++;
 724
 725                /* A matching refspec is okay.  */
 726                if (remote == local && remote[1] == '\0')
 727                        continue;
 728
 729                remote = remote ? (remote + 1) : local;
 730                switch (check_ref_format(remote)) {
 731                case 0: /* ok */
 732                case CHECK_REF_FORMAT_ONELEVEL:
 733                        /* ok but a single level -- that is fine for
 734                         * a match pattern.
 735                         */
 736                case CHECK_REF_FORMAT_WILDCARD:
 737                        /* ok but ends with a pattern-match character */
 738                        continue;
 739                }
 740                die("remote part of refspec is not a valid name in %s",
 741                    heads[i]);
 742        }
 743}
 744
 745static int git_transport_push(struct transport *transport, struct ref *remote_refs, int flags)
 746{
 747        struct git_transport_data *data = transport->data;
 748        struct send_pack_args args;
 749        int ret;
 750
 751        if (!data->conn) {
 752                struct ref *tmp_refs;
 753                connect_setup(transport, 1, 0);
 754
 755                get_remote_heads(data->fd[0], &tmp_refs, 0, NULL, REF_NORMAL,
 756                                 NULL);
 757        }
 758
 759        args.send_mirror = !!(flags & TRANSPORT_PUSH_MIRROR);
 760        args.force_update = !!(flags & TRANSPORT_PUSH_FORCE);
 761        args.use_thin_pack = data->thin;
 762        args.verbose = !!(flags & TRANSPORT_PUSH_VERBOSE);
 763        args.dry_run = !!(flags & TRANSPORT_PUSH_DRY_RUN);
 764
 765        ret = send_pack(&args, data->fd, data->conn, remote_refs,
 766                        &data->extra_have);
 767
 768        close(data->fd[1]);
 769        close(data->fd[0]);
 770        ret |= finish_connect(data->conn);
 771        data->conn = NULL;
 772
 773        return ret;
 774}
 775
 776static int disconnect_git(struct transport *transport)
 777{
 778        struct git_transport_data *data = transport->data;
 779        if (data->conn) {
 780                packet_flush(data->fd[1]);
 781                close(data->fd[0]);
 782                close(data->fd[1]);
 783                finish_connect(data->conn);
 784        }
 785
 786        free(data);
 787        return 0;
 788}
 789
 790static int is_local(const char *url)
 791{
 792        const char *colon = strchr(url, ':');
 793        const char *slash = strchr(url, '/');
 794        return !colon || (slash && slash < colon) ||
 795                has_dos_drive_prefix(url);
 796}
 797
 798static int is_file(const char *url)
 799{
 800        struct stat buf;
 801        if (stat(url, &buf))
 802                return 0;
 803        return S_ISREG(buf.st_mode);
 804}
 805
 806struct transport *transport_get(struct remote *remote, const char *url)
 807{
 808        struct transport *ret = xcalloc(1, sizeof(*ret));
 809
 810        ret->remote = remote;
 811        ret->url = url;
 812
 813        if (!prefixcmp(url, "rsync:")) {
 814                ret->get_refs_list = get_refs_via_rsync;
 815                ret->fetch = fetch_objs_via_rsync;
 816                ret->push = rsync_transport_push;
 817
 818        } else if (!prefixcmp(url, "http://")
 819                || !prefixcmp(url, "https://")
 820                || !prefixcmp(url, "ftp://")) {
 821                transport_helper_init(ret);
 822#ifdef NO_CURL
 823                error("git was compiled without libcurl support.");
 824#else
 825                ret->push = curl_transport_push;
 826#endif
 827
 828        } else if (is_local(url) && is_file(url)) {
 829                struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
 830                ret->data = data;
 831                ret->get_refs_list = get_refs_from_bundle;
 832                ret->fetch = fetch_refs_from_bundle;
 833                ret->disconnect = close_bundle;
 834
 835        } else {
 836                struct git_transport_data *data = xcalloc(1, sizeof(*data));
 837                ret->data = data;
 838                ret->set_option = set_git_option;
 839                ret->get_refs_list = get_refs_via_connect;
 840                ret->fetch = fetch_refs_via_pack;
 841                ret->push_refs = git_transport_push;
 842                ret->disconnect = disconnect_git;
 843
 844                data->thin = 1;
 845                data->conn = NULL;
 846                data->uploadpack = "git-upload-pack";
 847                if (remote && remote->uploadpack)
 848                        data->uploadpack = remote->uploadpack;
 849                data->receivepack = "git-receive-pack";
 850                if (remote && remote->receivepack)
 851                        data->receivepack = remote->receivepack;
 852        }
 853
 854        return ret;
 855}
 856
 857int transport_set_option(struct transport *transport,
 858                         const char *name, const char *value)
 859{
 860        if (transport->set_option)
 861                return transport->set_option(transport, name, value);
 862        return 1;
 863}
 864
 865int transport_push(struct transport *transport,
 866                   int refspec_nr, const char **refspec, int flags)
 867{
 868        verify_remote_names(refspec_nr, refspec);
 869
 870        if (transport->push)
 871                return transport->push(transport, refspec_nr, refspec, flags);
 872        if (transport->push_refs) {
 873                struct ref *remote_refs =
 874                        transport->get_refs_list(transport, 1);
 875                struct ref *local_refs = get_local_heads();
 876                int match_flags = MATCH_REFS_NONE;
 877                int verbose = flags & TRANSPORT_PUSH_VERBOSE;
 878                int porcelain = flags & TRANSPORT_PUSH_PORCELAIN;
 879                int ret;
 880
 881                if (flags & TRANSPORT_PUSH_ALL)
 882                        match_flags |= MATCH_REFS_ALL;
 883                if (flags & TRANSPORT_PUSH_MIRROR)
 884                        match_flags |= MATCH_REFS_MIRROR;
 885
 886                if (match_refs(local_refs, &remote_refs,
 887                               refspec_nr, refspec, match_flags)) {
 888                        return -1;
 889                }
 890
 891                ret = transport->push_refs(transport, remote_refs, flags);
 892
 893                print_push_status(transport->url, remote_refs, verbose | porcelain, porcelain);
 894
 895                if (!(flags & TRANSPORT_PUSH_DRY_RUN)) {
 896                        struct ref *ref;
 897                        for (ref = remote_refs; ref; ref = ref->next)
 898                                update_tracking_ref(transport->remote, ref, verbose);
 899                }
 900
 901                if (!ret && !refs_pushed(remote_refs))
 902                        fprintf(stderr, "Everything up-to-date\n");
 903                return ret;
 904        }
 905        return 1;
 906}
 907
 908const struct ref *transport_get_remote_refs(struct transport *transport)
 909{
 910        if (!transport->remote_refs)
 911                transport->remote_refs = transport->get_refs_list(transport, 0);
 912        return transport->remote_refs;
 913}
 914
 915int transport_fetch_refs(struct transport *transport, const struct ref *refs)
 916{
 917        int rc;
 918        int nr_heads = 0, nr_alloc = 0;
 919        const struct ref **heads = NULL;
 920        const struct ref *rm;
 921
 922        for (rm = refs; rm; rm = rm->next) {
 923                if (rm->peer_ref &&
 924                    !hashcmp(rm->peer_ref->old_sha1, rm->old_sha1))
 925                        continue;
 926                ALLOC_GROW(heads, nr_heads + 1, nr_alloc);
 927                heads[nr_heads++] = rm;
 928        }
 929
 930        rc = transport->fetch(transport, nr_heads, heads);
 931        free(heads);
 932        return rc;
 933}
 934
 935void transport_unlock_pack(struct transport *transport)
 936{
 937        if (transport->pack_lockfile) {
 938                unlink_or_warn(transport->pack_lockfile);
 939                free(transport->pack_lockfile);
 940                transport->pack_lockfile = NULL;
 941        }
 942}
 943
 944int transport_disconnect(struct transport *transport)
 945{
 946        int ret = 0;
 947        if (transport->disconnect)
 948                ret = transport->disconnect(transport);
 949        free(transport);
 950        return ret;
 951}
 952
 953/*
 954 * Strip username (and password) from an url and return
 955 * it in a newly allocated string.
 956 */
 957char *transport_anonymize_url(const char *url)
 958{
 959        char *anon_url, *scheme_prefix, *anon_part;
 960        size_t anon_len, prefix_len = 0;
 961
 962        anon_part = strchr(url, '@');
 963        if (is_local(url) || !anon_part)
 964                goto literal_copy;
 965
 966        anon_len = strlen(++anon_part);
 967        scheme_prefix = strstr(url, "://");
 968        if (!scheme_prefix) {
 969                if (!strchr(anon_part, ':'))
 970                        /* cannot be "me@there:/path/name" */
 971                        goto literal_copy;
 972        } else {
 973                const char *cp;
 974                /* make sure scheme is reasonable */
 975                for (cp = url; cp < scheme_prefix; cp++) {
 976                        switch (*cp) {
 977                                /* RFC 1738 2.1 */
 978                        case '+': case '.': case '-':
 979                                break; /* ok */
 980                        default:
 981                                if (isalnum(*cp))
 982                                        break;
 983                                /* it isn't */
 984                                goto literal_copy;
 985                        }
 986                }
 987                /* @ past the first slash does not count */
 988                cp = strchr(scheme_prefix + 3, '/');
 989                if (cp && cp < anon_part)
 990                        goto literal_copy;
 991                prefix_len = scheme_prefix - url + 3;
 992        }
 993        anon_url = xcalloc(1, 1 + prefix_len + anon_len);
 994        memcpy(anon_url, url, prefix_len);
 995        memcpy(anon_url + prefix_len, anon_part, anon_len);
 996        return anon_url;
 997literal_copy:
 998        return xstrdup(url);
 999}