| 1 | #define USE_THE_REPOSITORY_VARIABLE |
| 2 | #define DISABLE_SIGN_COMPARE_WARNINGS |
| 3 | |
| 4 | #include "git-compat-util.h" |
| 5 | #include "git-curl-compat.h" |
| 6 | #include "config.h" |
| 7 | #include "environment.h" |
| 8 | #include "gettext.h" |
| 9 | #include "hex.h" |
| 10 | #include "remote.h" |
| 11 | #include "connect.h" |
| 12 | #include "strbuf.h" |
| 13 | #include "walker.h" |
| 14 | #include "http.h" |
| 15 | #include "run-command.h" |
| 16 | #include "pkt-line.h" |
| 17 | #include "string-list.h" |
| 18 | #include "strvec.h" |
| 19 | #include "credential.h" |
| 20 | #include "oid-array.h" |
| 21 | #include "send-pack.h" |
| 22 | #include "setup.h" |
| 23 | #include "protocol.h" |
| 24 | #include "quote.h" |
| 25 | #include "trace2.h" |
| 26 | #include "transport.h" |
| 27 | #include "url.h" |
| 28 | #include "write-or-die.h" |
| 29 | |
| 30 | static struct remote *remote; |
| 31 | /* always ends with a trailing slash */ |
| 32 | static struct strbuf url = STRBUF_INIT; |
| 33 | |
| 34 | struct options { |
| 35 | int verbosity; |
| 36 | unsigned long depth; |
| 37 | char *deepen_since; |
| 38 | struct string_list deepen_not; |
| 39 | struct string_list push_options; |
| 40 | char *filter; |
| 41 | unsigned progress : 1, |
| 42 | check_self_contained_and_connected : 1, |
| 43 | cloning : 1, |
| 44 | update_shallow : 1, |
| 45 | followtags : 1, |
| 46 | dry_run : 1, |
| 47 | thin : 1, |
| 48 | /* One of the SEND_PACK_PUSH_CERT_* constants. */ |
| 49 | push_cert : 2, |
| 50 | deepen_relative : 1, |
| 51 | |
| 52 | /* see documentation of corresponding flag in fetch-pack.h */ |
| 53 | from_promisor : 1, |
| 54 | |
| 55 | refetch : 1, |
| 56 | atomic : 1, |
| 57 | object_format : 1, |
| 58 | force_if_includes : 1; |
| 59 | const struct git_hash_algo *hash_algo; |
| 60 | }; |
| 61 | static struct options options; |
| 62 | static struct string_list cas_options = STRING_LIST_INIT_DUP; |
| 63 | |
| 64 | static int set_option(const char *name, size_t namelen, const char *value) |
| 65 | { |
| 66 | if (!strncmp(name, "verbosity", namelen)) { |
| 67 | char *end; |
| 68 | int v = strtol(value, &end, 10); |
| 69 | if (value == end || *end) |
| 70 | return -1; |
| 71 | options.verbosity = v; |
| 72 | return 0; |
| 73 | } |
| 74 | else if (!strncmp(name, "progress", namelen)) { |
| 75 | if (!strcmp(value, "true")) |
| 76 | options.progress = 1; |
| 77 | else if (!strcmp(value, "false")) |
| 78 | options.progress = 0; |
| 79 | else |
| 80 | return -1; |
| 81 | return 0; |
| 82 | } |
| 83 | else if (!strncmp(name, "depth", namelen)) { |
| 84 | char *end; |
| 85 | unsigned long v = strtoul(value, &end, 10); |
| 86 | if (value == end || *end) |
| 87 | return -1; |
| 88 | options.depth = v; |
| 89 | return 0; |
| 90 | } |
| 91 | else if (!strncmp(name, "deepen-since", namelen)) { |
| 92 | options.deepen_since = xstrdup(value); |
| 93 | return 0; |
| 94 | } |
| 95 | else if (!strncmp(name, "deepen-not", namelen)) { |
| 96 | string_list_append(&options.deepen_not, value); |
| 97 | return 0; |
| 98 | } |
| 99 | else if (!strncmp(name, "deepen-relative", namelen)) { |
| 100 | if (!strcmp(value, "true")) |
| 101 | options.deepen_relative = 1; |
| 102 | else if (!strcmp(value, "false")) |
| 103 | options.deepen_relative = 0; |
| 104 | else |
| 105 | return -1; |
| 106 | return 0; |
| 107 | } |
| 108 | else if (!strncmp(name, "followtags", namelen)) { |
| 109 | if (!strcmp(value, "true")) |
| 110 | options.followtags = 1; |
| 111 | else if (!strcmp(value, "false")) |
| 112 | options.followtags = 0; |
| 113 | else |
| 114 | return -1; |
| 115 | return 0; |
| 116 | } |
| 117 | else if (!strncmp(name, "dry-run", namelen)) { |
| 118 | if (!strcmp(value, "true")) |
| 119 | options.dry_run = 1; |
| 120 | else if (!strcmp(value, "false")) |
| 121 | options.dry_run = 0; |
| 122 | else |
| 123 | return -1; |
| 124 | return 0; |
| 125 | } |
| 126 | else if (!strncmp(name, "check-connectivity", namelen)) { |
| 127 | if (!strcmp(value, "true")) |
| 128 | options.check_self_contained_and_connected = 1; |
| 129 | else if (!strcmp(value, "false")) |
| 130 | options.check_self_contained_and_connected = 0; |
| 131 | else |
| 132 | return -1; |
| 133 | return 0; |
| 134 | } |
| 135 | else if (!strncmp(name, "cas", namelen)) { |
| 136 | struct strbuf val = STRBUF_INIT; |
| 137 | strbuf_addstr(&val, "--force-with-lease="); |
| 138 | if (*value != '"') |
| 139 | strbuf_addstr(&val, value); |
| 140 | else if (unquote_c_style(&val, value, NULL)) |
| 141 | return -1; |
| 142 | string_list_append(&cas_options, val.buf); |
| 143 | strbuf_release(&val); |
| 144 | return 0; |
| 145 | } else if (!strncmp(name, TRANS_OPT_FORCE_IF_INCLUDES, namelen)) { |
| 146 | if (!strcmp(value, "true")) |
| 147 | options.force_if_includes = 1; |
| 148 | else if (!strcmp(value, "false")) |
| 149 | options.force_if_includes = 0; |
| 150 | else |
| 151 | return -1; |
| 152 | return 0; |
| 153 | } else if (!strncmp(name, "cloning", namelen)) { |
| 154 | if (!strcmp(value, "true")) |
| 155 | options.cloning = 1; |
| 156 | else if (!strcmp(value, "false")) |
| 157 | options.cloning = 0; |
| 158 | else |
| 159 | return -1; |
| 160 | return 0; |
| 161 | } else if (!strncmp(name, "update-shallow", namelen)) { |
| 162 | if (!strcmp(value, "true")) |
| 163 | options.update_shallow = 1; |
| 164 | else if (!strcmp(value, "false")) |
| 165 | options.update_shallow = 0; |
| 166 | else |
| 167 | return -1; |
| 168 | return 0; |
| 169 | } else if (!strncmp(name, "pushcert", namelen)) { |
| 170 | if (!strcmp(value, "true")) |
| 171 | options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS; |
| 172 | else if (!strcmp(value, "false")) |
| 173 | options.push_cert = SEND_PACK_PUSH_CERT_NEVER; |
| 174 | else if (!strcmp(value, "if-asked")) |
| 175 | options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED; |
| 176 | else |
| 177 | return -1; |
| 178 | return 0; |
| 179 | } else if (!strncmp(name, "atomic", namelen)) { |
| 180 | if (!strcmp(value, "true")) |
| 181 | options.atomic = 1; |
| 182 | else if (!strcmp(value, "false")) |
| 183 | options.atomic = 0; |
| 184 | else |
| 185 | return -1; |
| 186 | return 0; |
| 187 | } else if (!strncmp(name, "push-option", namelen)) { |
| 188 | if (*value != '"') |
| 189 | string_list_append(&options.push_options, value); |
| 190 | else { |
| 191 | struct strbuf unquoted = STRBUF_INIT; |
| 192 | if (unquote_c_style(&unquoted, value, NULL) < 0) |
| 193 | die(_("invalid quoting in push-option value: '%s'"), value); |
| 194 | string_list_append_nodup(&options.push_options, |
| 195 | strbuf_detach(&unquoted, NULL)); |
| 196 | } |
| 197 | return 0; |
| 198 | } else if (!strncmp(name, "family", namelen)) { |
| 199 | if (!strcmp(value, "ipv4")) |
| 200 | git_curl_ipresolve = CURL_IPRESOLVE_V4; |
| 201 | else if (!strcmp(value, "ipv6")) |
| 202 | git_curl_ipresolve = CURL_IPRESOLVE_V6; |
| 203 | else if (!strcmp(value, "all")) |
| 204 | git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER; |
| 205 | else |
| 206 | return -1; |
| 207 | return 0; |
| 208 | } else if (!strncmp(name, "from-promisor", namelen)) { |
| 209 | options.from_promisor = 1; |
| 210 | return 0; |
| 211 | } else if (!strncmp(name, "refetch", namelen)) { |
| 212 | options.refetch = 1; |
| 213 | return 0; |
| 214 | } else if (!strncmp(name, "filter", namelen)) { |
| 215 | options.filter = xstrdup(value); |
| 216 | return 0; |
| 217 | } else if (!strncmp(name, "object-format", namelen)) { |
| 218 | options.object_format = 1; |
| 219 | if (strcmp(value, "true")) |
| 220 | die(_("unknown value for object-format: %s"), value); |
| 221 | return 0; |
| 222 | } else { |
| 223 | return 1 /* unsupported */; |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | struct discovery { |
| 228 | char *service; |
| 229 | char *buf_alloc; |
| 230 | char *buf; |
| 231 | size_t len; |
| 232 | struct ref *refs; |
| 233 | struct oid_array shallow; |
| 234 | enum protocol_version version; |
| 235 | unsigned proto_git : 1; |
| 236 | }; |
| 237 | static struct discovery *last_discovery; |
| 238 | |
| 239 | static struct ref *parse_git_refs(struct discovery *heads, int for_push) |
| 240 | { |
| 241 | struct ref *list = NULL; |
| 242 | struct packet_reader reader; |
| 243 | |
| 244 | packet_reader_init(&reader, -1, heads->buf, heads->len, |
| 245 | PACKET_READ_CHOMP_NEWLINE | |
| 246 | PACKET_READ_GENTLE_ON_EOF | |
| 247 | PACKET_READ_DIE_ON_ERR_PACKET); |
| 248 | |
| 249 | heads->version = discover_version(&reader); |
| 250 | switch (heads->version) { |
| 251 | case protocol_v2: |
| 252 | /* |
| 253 | * Do nothing. This isn't a list of refs but rather a |
| 254 | * capability advertisement. Client would have run |
| 255 | * 'stateless-connect' so we'll dump this capability listing |
| 256 | * and let them request the refs themselves. |
| 257 | */ |
| 258 | break; |
| 259 | case protocol_v1: |
| 260 | case protocol_v0: |
| 261 | get_remote_heads(&reader, &list, for_push ? REF_NORMAL : 0, |
| 262 | NULL, &heads->shallow); |
| 263 | options.hash_algo = reader.hash_algo; |
| 264 | break; |
| 265 | case protocol_unknown_version: |
| 266 | BUG("unknown protocol version"); |
| 267 | } |
| 268 | |
| 269 | return list; |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Try to detect the hash algorithm used by the remote repository when using |
| 274 | * the dumb HTTP transport. As dumb transports cannot tell us the object hash |
| 275 | * directly have to derive it from the advertised ref lengths. |
| 276 | */ |
| 277 | static const struct git_hash_algo *detect_hash_algo(struct discovery *heads) |
| 278 | { |
| 279 | const char *p = memchr(heads->buf, '\t', heads->len); |
| 280 | int algo; |
| 281 | |
| 282 | /* |
| 283 | * In case the remote has no refs we have no way to reliably determine |
| 284 | * the object hash used by that repository. In that case we simply fall |
| 285 | * back to SHA1, which may or may not be correct. |
| 286 | */ |
| 287 | if (!p) |
| 288 | return &hash_algos[GIT_HASH_SHA1_LEGACY]; |
| 289 | |
| 290 | algo = hash_algo_by_length((p - heads->buf) / 2); |
| 291 | if (algo == GIT_HASH_UNKNOWN) |
| 292 | return NULL; |
| 293 | return &hash_algos[algo]; |
| 294 | } |
| 295 | |
| 296 | static struct ref *parse_info_refs(struct discovery *heads) |
| 297 | { |
| 298 | char *data, *start, *mid; |
| 299 | char *ref_name; |
| 300 | int i = 0; |
| 301 | |
| 302 | struct ref *refs = NULL; |
| 303 | struct ref *ref = NULL; |
| 304 | struct ref *last_ref = NULL; |
| 305 | |
| 306 | options.hash_algo = detect_hash_algo(heads); |
| 307 | if (!options.hash_algo) |
| 308 | die("%sinfo/refs not valid: could not determine hash algorithm; " |
| 309 | "is this a git repository?", |
| 310 | transport_anonymize_url(url.buf)); |
| 311 | |
| 312 | /* |
| 313 | * Set the repository's hash algo to whatever we have just detected. |
| 314 | * This ensures that we can correctly parse the remote references. |
| 315 | */ |
| 316 | repo_set_hash_algo(the_repository, hash_algo_by_ptr(options.hash_algo)); |
| 317 | |
| 318 | data = heads->buf; |
| 319 | start = NULL; |
| 320 | mid = data; |
| 321 | while (i < heads->len) { |
| 322 | if (!start) { |
| 323 | start = &data[i]; |
| 324 | } |
| 325 | if (data[i] == '\t') |
| 326 | mid = &data[i]; |
| 327 | if (data[i] == '\n') { |
| 328 | if (mid - start != options.hash_algo->hexsz) |
| 329 | die(_("%sinfo/refs not valid: is this a git repository?"), |
| 330 | transport_anonymize_url(url.buf)); |
| 331 | data[i] = 0; |
| 332 | ref_name = mid + 1; |
| 333 | ref = alloc_ref(ref_name); |
| 334 | get_oid_hex_algop(start, &ref->old_oid, options.hash_algo); |
| 335 | if (!refs) |
| 336 | refs = ref; |
| 337 | if (last_ref) |
| 338 | last_ref->next = ref; |
| 339 | last_ref = ref; |
| 340 | start = NULL; |
| 341 | } |
| 342 | i++; |
| 343 | } |
| 344 | |
| 345 | ref = alloc_ref("HEAD"); |
| 346 | if (!http_fetch_ref(url.buf, ref) && |
| 347 | !resolve_remote_symref(ref, refs)) { |
| 348 | ref->next = refs; |
| 349 | refs = ref; |
| 350 | } else { |
| 351 | free_one_ref(ref); |
| 352 | } |
| 353 | |
| 354 | return refs; |
| 355 | } |
| 356 | |
| 357 | static void free_discovery(struct discovery *d) |
| 358 | { |
| 359 | if (d) { |
| 360 | if (d == last_discovery) |
| 361 | last_discovery = NULL; |
| 362 | free(d->shallow.oid); |
| 363 | free(d->buf_alloc); |
| 364 | free_refs(d->refs); |
| 365 | free(d->service); |
| 366 | free(d); |
| 367 | } |
| 368 | } |
| 369 | |
| 370 | static int show_http_message(struct strbuf *type, struct strbuf *charset, |
| 371 | struct strbuf *msg) |
| 372 | { |
| 373 | const char *p, *eol; |
| 374 | |
| 375 | /* |
| 376 | * We only show text/plain parts, as other types are likely |
| 377 | * to be ugly to look at on the user's terminal. |
| 378 | */ |
| 379 | if (strcmp(type->buf, "text/plain")) |
| 380 | return -1; |
| 381 | if (charset->len) |
| 382 | strbuf_reencode(msg, charset->buf, get_log_output_encoding()); |
| 383 | |
| 384 | strbuf_trim(msg); |
| 385 | if (!msg->len) |
| 386 | return -1; |
| 387 | |
| 388 | p = msg->buf; |
| 389 | do { |
| 390 | eol = strchrnul(p, '\n'); |
| 391 | fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p); |
| 392 | p = eol + 1; |
| 393 | } while(*eol); |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | static int get_protocol_http_header(enum protocol_version version, |
| 398 | struct strbuf *header) |
| 399 | { |
| 400 | if (version > 0) { |
| 401 | strbuf_addf(header, GIT_PROTOCOL_HEADER ": version=%d", |
| 402 | version); |
| 403 | |
| 404 | return 1; |
| 405 | } |
| 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | static void check_smart_http(struct discovery *d, const char *service, |
| 411 | struct strbuf *type) |
| 412 | { |
| 413 | const char *p; |
| 414 | struct packet_reader reader; |
| 415 | |
| 416 | /* |
| 417 | * If we don't see x-$service-advertisement, then it's not smart-http. |
| 418 | * But once we do, we commit to it and assume any other protocol |
| 419 | * violations are hard errors. |
| 420 | */ |
| 421 | if (!skip_prefix(type->buf, "application/x-", &p) || |
| 422 | !skip_prefix(p, service, &p) || |
| 423 | strcmp(p, "-advertisement")) |
| 424 | return; |
| 425 | |
| 426 | packet_reader_init(&reader, -1, d->buf, d->len, |
| 427 | PACKET_READ_CHOMP_NEWLINE | |
| 428 | PACKET_READ_DIE_ON_ERR_PACKET); |
| 429 | if (packet_reader_read(&reader) != PACKET_READ_NORMAL) |
| 430 | die(_("invalid server response; expected service, got flush packet")); |
| 431 | |
| 432 | if (skip_prefix(reader.line, "# service=", &p) && !strcmp(p, service)) { |
| 433 | /* |
| 434 | * The header can include additional metadata lines, up |
| 435 | * until a packet flush marker. Ignore these now, but |
| 436 | * in the future we might start to scan them. |
| 437 | */ |
| 438 | for (;;) { |
| 439 | packet_reader_read(&reader); |
| 440 | if (reader.pktlen <= 0) { |
| 441 | break; |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | /* |
| 446 | * v0 smart http; callers expect us to soak up the |
| 447 | * service and header packets |
| 448 | */ |
| 449 | d->buf = reader.src_buffer; |
| 450 | d->len = reader.src_len; |
| 451 | d->proto_git = 1; |
| 452 | |
| 453 | } else if (!strcmp(reader.line, "version 2")) { |
| 454 | /* |
| 455 | * v2 smart http; do not consume version packet, which will |
| 456 | * be handled elsewhere. |
| 457 | */ |
| 458 | d->proto_git = 1; |
| 459 | |
| 460 | } else { |
| 461 | die(_("invalid server response; got '%s'"), reader.line); |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | static struct discovery *discover_refs(const char *service, int for_push) |
| 466 | { |
| 467 | struct strbuf type = STRBUF_INIT; |
| 468 | struct strbuf charset = STRBUF_INIT; |
| 469 | struct strbuf buffer = STRBUF_INIT; |
| 470 | struct strbuf refs_url = STRBUF_INIT; |
| 471 | struct strbuf effective_url = STRBUF_INIT; |
| 472 | struct strbuf protocol_header = STRBUF_INIT; |
| 473 | struct string_list extra_headers = STRING_LIST_INIT_DUP; |
| 474 | struct discovery *last = last_discovery; |
| 475 | int http_ret, maybe_smart = 0; |
| 476 | struct http_get_options http_options; |
| 477 | enum protocol_version version = get_protocol_version_config(); |
| 478 | |
| 479 | if (last && !strcmp(service, last->service)) |
| 480 | return last; |
| 481 | free_discovery(last); |
| 482 | |
| 483 | strbuf_addf(&refs_url, "%sinfo/refs", url.buf); |
| 484 | if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) && |
| 485 | git_env_bool("GIT_SMART_HTTP", 1)) { |
| 486 | maybe_smart = 1; |
| 487 | if (!strchr(url.buf, '?')) |
| 488 | strbuf_addch(&refs_url, '?'); |
| 489 | else |
| 490 | strbuf_addch(&refs_url, '&'); |
| 491 | strbuf_addf(&refs_url, "service=%s", service); |
| 492 | } |
| 493 | |
| 494 | /* |
| 495 | * NEEDSWORK: If we are trying to use protocol v2 and we are planning |
| 496 | * to perform any operation that doesn't involve upload-pack (i.e., a |
| 497 | * fetch, ls-remote, etc), then fallback to v0 since we don't know how |
| 498 | * to do anything else (like push or remote archive) via v2. |
| 499 | */ |
| 500 | if (version == protocol_v2 && strcmp("git-upload-pack", service)) |
| 501 | version = protocol_v0; |
| 502 | |
| 503 | /* Add the extra Git-Protocol header */ |
| 504 | if (get_protocol_http_header(version, &protocol_header)) |
| 505 | string_list_append(&extra_headers, protocol_header.buf); |
| 506 | |
| 507 | memset(&http_options, 0, sizeof(http_options)); |
| 508 | http_options.content_type = &type; |
| 509 | http_options.charset = &charset; |
| 510 | http_options.effective_url = &effective_url; |
| 511 | http_options.base_url = &url; |
| 512 | http_options.extra_headers = &extra_headers; |
| 513 | http_options.initial_request = 1; |
| 514 | http_options.no_cache = 1; |
| 515 | |
| 516 | http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options); |
| 517 | switch (http_ret) { |
| 518 | case HTTP_OK: |
| 519 | break; |
| 520 | case HTTP_MISSING_TARGET: |
| 521 | show_http_message(&type, &charset, &buffer); |
| 522 | die(_("repository '%s' not found"), |
| 523 | transport_anonymize_url(url.buf)); |
| 524 | case HTTP_NOAUTH: |
| 525 | show_http_message(&type, &charset, &buffer); |
| 526 | die(_("Authentication failed for '%s'"), |
| 527 | transport_anonymize_url(url.buf)); |
| 528 | case HTTP_NOMATCHPUBLICKEY: |
| 529 | show_http_message(&type, &charset, &buffer); |
| 530 | die(_("unable to access '%s' with http.pinnedPubkey configuration: %s"), |
| 531 | transport_anonymize_url(url.buf), curl_errorstr); |
| 532 | case HTTP_RATE_LIMITED: |
| 533 | if (http_options.retry_after > 0) { |
| 534 | show_http_message(&type, &charset, &buffer); |
| 535 | die(_("rate limited by '%s', please try again in %ld seconds"), |
| 536 | transport_anonymize_url(url.buf), |
| 537 | http_options.retry_after); |
| 538 | } else { |
| 539 | show_http_message(&type, &charset, &buffer); |
| 540 | die(_("rate limited by '%s', please try again later"), |
| 541 | transport_anonymize_url(url.buf)); |
| 542 | } |
| 543 | default: |
| 544 | show_http_message(&type, &charset, &buffer); |
| 545 | die(_("unable to access '%s': %s"), |
| 546 | transport_anonymize_url(url.buf), curl_errorstr); |
| 547 | } |
| 548 | |
| 549 | if (options.verbosity && !starts_with(refs_url.buf, url.buf)) { |
| 550 | char *u = transport_anonymize_url(url.buf); |
| 551 | warning(_("redirecting to %s"), u); |
| 552 | free(u); |
| 553 | } |
| 554 | |
| 555 | last= xcalloc(1, sizeof(*last_discovery)); |
| 556 | last->service = xstrdup(service); |
| 557 | last->buf_alloc = strbuf_detach(&buffer, &last->len); |
| 558 | last->buf = last->buf_alloc; |
| 559 | |
| 560 | if (maybe_smart) |
| 561 | check_smart_http(last, service, &type); |
| 562 | |
| 563 | if (last->proto_git) |
| 564 | last->refs = parse_git_refs(last, for_push); |
| 565 | else |
| 566 | last->refs = parse_info_refs(last); |
| 567 | |
| 568 | strbuf_release(&refs_url); |
| 569 | strbuf_release(&type); |
| 570 | strbuf_release(&charset); |
| 571 | strbuf_release(&effective_url); |
| 572 | strbuf_release(&buffer); |
| 573 | strbuf_release(&protocol_header); |
| 574 | string_list_clear(&extra_headers, 0); |
| 575 | last_discovery = last; |
| 576 | return last; |
| 577 | } |
| 578 | |
| 579 | static struct ref *get_refs(int for_push) |
| 580 | { |
| 581 | struct discovery *heads; |
| 582 | |
| 583 | if (for_push) |
| 584 | heads = discover_refs("git-receive-pack", for_push); |
| 585 | else |
| 586 | heads = discover_refs("git-upload-pack", for_push); |
| 587 | |
| 588 | return heads->refs; |
| 589 | } |
| 590 | |
| 591 | static void output_refs(struct ref *refs) |
| 592 | { |
| 593 | struct ref *posn; |
| 594 | if (options.object_format && options.hash_algo) { |
| 595 | printf(":object-format %s\n", options.hash_algo->name); |
| 596 | repo_set_hash_algo(the_repository, |
| 597 | hash_algo_by_ptr(options.hash_algo)); |
| 598 | } |
| 599 | for (posn = refs; posn; posn = posn->next) { |
| 600 | if (posn->symref) |
| 601 | printf("@%s %s\n", posn->symref, posn->name); |
| 602 | else |
| 603 | printf("%s %s\n", hash_to_hex_algop(posn->old_oid.hash, |
| 604 | options.hash_algo), |
| 605 | posn->name); |
| 606 | } |
| 607 | printf("\n"); |
| 608 | fflush(stdout); |
| 609 | } |
| 610 | |
| 611 | struct rpc_state { |
| 612 | const char *service_name; |
| 613 | char *service_url; |
| 614 | char *hdr_content_type; |
| 615 | char *hdr_accept; |
| 616 | char *hdr_accept_language; |
| 617 | char *protocol_header; |
| 618 | char *buf; |
| 619 | size_t alloc; |
| 620 | size_t len; |
| 621 | size_t pos; |
| 622 | int in; |
| 623 | int out; |
| 624 | int any_written; |
| 625 | unsigned gzip_request : 1; |
| 626 | unsigned initial_buffer : 1; |
| 627 | |
| 628 | /* |
| 629 | * Whenever a pkt-line is read into buf, append the 4 characters |
| 630 | * denoting its length before appending the payload. |
| 631 | */ |
| 632 | unsigned write_line_lengths : 1; |
| 633 | |
| 634 | /* |
| 635 | * Used by rpc_out; initialize to 0. This is true if a flush has been |
| 636 | * read, but the corresponding line length (if write_line_lengths is |
| 637 | * true) and EOF have not been sent to libcurl. Since each flush marks |
| 638 | * the end of a request, each flush must be completely sent before any |
| 639 | * further reading occurs. |
| 640 | */ |
| 641 | unsigned flush_read_but_not_sent : 1; |
| 642 | }; |
| 643 | |
| 644 | #define RPC_STATE_INIT { 0 } |
| 645 | |
| 646 | /* |
| 647 | * Appends the result of reading from rpc->out to the string represented by |
| 648 | * rpc->buf and rpc->len if there is enough space. Returns 1 if there was |
| 649 | * enough space, 0 otherwise. |
| 650 | * |
| 651 | * If rpc->write_line_lengths is true, appends the line length as a 4-byte |
| 652 | * hexadecimal string before appending the result described above. |
| 653 | * |
| 654 | * Writes the total number of bytes appended into appended. |
| 655 | */ |
| 656 | static int rpc_read_from_out(struct rpc_state *rpc, int options, |
| 657 | size_t *appended, |
| 658 | enum packet_read_status *status) { |
| 659 | size_t left; |
| 660 | char *buf; |
| 661 | int pktlen_raw; |
| 662 | |
| 663 | if (rpc->write_line_lengths) { |
| 664 | left = rpc->alloc - rpc->len - 4; |
| 665 | buf = rpc->buf + rpc->len + 4; |
| 666 | } else { |
| 667 | left = rpc->alloc - rpc->len; |
| 668 | buf = rpc->buf + rpc->len; |
| 669 | } |
| 670 | |
| 671 | if (left < LARGE_PACKET_MAX) |
| 672 | return 0; |
| 673 | |
| 674 | *status = packet_read_with_status(rpc->out, NULL, NULL, buf, |
| 675 | left, &pktlen_raw, options); |
| 676 | if (*status != PACKET_READ_EOF) { |
| 677 | *appended = pktlen_raw + (rpc->write_line_lengths ? 4 : 0); |
| 678 | rpc->len += *appended; |
| 679 | } |
| 680 | |
| 681 | if (rpc->write_line_lengths) { |
| 682 | switch (*status) { |
| 683 | case PACKET_READ_EOF: |
| 684 | if (!(options & PACKET_READ_GENTLE_ON_EOF)) |
| 685 | die(_("shouldn't have EOF when not gentle on EOF")); |
| 686 | break; |
| 687 | case PACKET_READ_NORMAL: |
| 688 | set_packet_header(buf - 4, *appended); |
| 689 | break; |
| 690 | case PACKET_READ_DELIM: |
| 691 | memcpy(buf - 4, "0001", 4); |
| 692 | break; |
| 693 | case PACKET_READ_FLUSH: |
| 694 | memcpy(buf - 4, "0000", 4); |
| 695 | break; |
| 696 | case PACKET_READ_RESPONSE_END: |
| 697 | die(_("remote server sent unexpected response end packet")); |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | return 1; |
| 702 | } |
| 703 | |
| 704 | static size_t rpc_out(void *ptr, size_t eltsize, |
| 705 | size_t nmemb, void *buffer_) |
| 706 | { |
| 707 | size_t max = eltsize * nmemb; |
| 708 | struct rpc_state *rpc = buffer_; |
| 709 | size_t avail = rpc->len - rpc->pos; |
| 710 | enum packet_read_status status; |
| 711 | |
| 712 | if (!avail) { |
| 713 | rpc->initial_buffer = 0; |
| 714 | rpc->len = 0; |
| 715 | rpc->pos = 0; |
| 716 | if (!rpc->flush_read_but_not_sent) { |
| 717 | if (!rpc_read_from_out(rpc, 0, &avail, &status)) |
| 718 | BUG("The entire rpc->buf should be larger than LARGE_PACKET_MAX"); |
| 719 | if (status == PACKET_READ_FLUSH) |
| 720 | rpc->flush_read_but_not_sent = 1; |
| 721 | } |
| 722 | /* |
| 723 | * If flush_read_but_not_sent is true, we have already read one |
| 724 | * full request but have not fully sent it + EOF, which is why |
| 725 | * we need to refrain from reading. |
| 726 | */ |
| 727 | } |
| 728 | if (rpc->flush_read_but_not_sent) { |
| 729 | if (!avail) { |
| 730 | /* |
| 731 | * The line length either does not need to be sent at |
| 732 | * all or has already been completely sent. Now we can |
| 733 | * return 0, indicating EOF, meaning that the flush has |
| 734 | * been fully sent. |
| 735 | */ |
| 736 | rpc->flush_read_but_not_sent = 0; |
| 737 | return 0; |
| 738 | } |
| 739 | /* |
| 740 | * If avail is non-zero, the line length for the flush still |
| 741 | * hasn't been fully sent. Proceed with sending the line |
| 742 | * length. |
| 743 | */ |
| 744 | } |
| 745 | |
| 746 | if (max < avail) |
| 747 | avail = max; |
| 748 | memcpy(ptr, rpc->buf + rpc->pos, avail); |
| 749 | rpc->pos += avail; |
| 750 | return avail; |
| 751 | } |
| 752 | |
| 753 | static int rpc_seek(void *clientp, curl_off_t offset, int origin) |
| 754 | { |
| 755 | struct rpc_state *rpc = clientp; |
| 756 | |
| 757 | if (origin != SEEK_SET) |
| 758 | BUG("rpc_seek only handles SEEK_SET, not %d", origin); |
| 759 | |
| 760 | if (rpc->initial_buffer) { |
| 761 | if (offset < 0 || offset > rpc->len) { |
| 762 | error("curl seek would be outside of rpc buffer"); |
| 763 | return CURL_SEEKFUNC_FAIL; |
| 764 | } |
| 765 | rpc->pos = offset; |
| 766 | return CURL_SEEKFUNC_OK; |
| 767 | } |
| 768 | error(_("unable to rewind rpc post data - try increasing http.postBuffer")); |
| 769 | return CURL_SEEKFUNC_FAIL; |
| 770 | } |
| 771 | |
| 772 | struct check_pktline_state { |
| 773 | char len_buf[4]; |
| 774 | int len_filled; |
| 775 | int remaining; |
| 776 | }; |
| 777 | |
| 778 | static void check_pktline(struct check_pktline_state *state, const char *ptr, size_t size) |
| 779 | { |
| 780 | while (size) { |
| 781 | if (!state->remaining) { |
| 782 | int digits_remaining = 4 - state->len_filled; |
| 783 | if (digits_remaining > size) |
| 784 | digits_remaining = size; |
| 785 | memcpy(&state->len_buf[state->len_filled], ptr, digits_remaining); |
| 786 | state->len_filled += digits_remaining; |
| 787 | ptr += digits_remaining; |
| 788 | size -= digits_remaining; |
| 789 | |
| 790 | if (state->len_filled == 4) { |
| 791 | state->remaining = packet_length(state->len_buf, |
| 792 | sizeof(state->len_buf)); |
| 793 | if (state->remaining < 0) { |
| 794 | die(_("remote-curl: bad line length character: %.4s"), state->len_buf); |
| 795 | } else if (state->remaining == 2) { |
| 796 | die(_("remote-curl: unexpected response end packet")); |
| 797 | } else if (state->remaining < 4) { |
| 798 | state->remaining = 0; |
| 799 | } else { |
| 800 | state->remaining -= 4; |
| 801 | } |
| 802 | state->len_filled = 0; |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | if (state->remaining) { |
| 807 | int remaining = state->remaining; |
| 808 | if (remaining > size) |
| 809 | remaining = size; |
| 810 | ptr += remaining; |
| 811 | size -= remaining; |
| 812 | state->remaining -= remaining; |
| 813 | } |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | struct rpc_in_data { |
| 818 | struct rpc_state *rpc; |
| 819 | struct active_request_slot *slot; |
| 820 | int check_pktline; |
| 821 | struct check_pktline_state pktline_state; |
| 822 | }; |
| 823 | |
| 824 | /* |
| 825 | * A callback for CURLOPT_WRITEFUNCTION. The return value is the bytes consumed |
| 826 | * from ptr. |
| 827 | */ |
| 828 | static size_t rpc_in(char *ptr, size_t eltsize, |
| 829 | size_t nmemb, void *buffer_) |
| 830 | { |
| 831 | size_t size = eltsize * nmemb; |
| 832 | struct rpc_in_data *data = buffer_; |
| 833 | long response_code; |
| 834 | |
| 835 | if (curl_easy_getinfo(data->slot->curl, CURLINFO_RESPONSE_CODE, |
| 836 | &response_code) != CURLE_OK) |
| 837 | return size; |
| 838 | if (response_code >= 300) |
| 839 | return size; |
| 840 | if (size) |
| 841 | data->rpc->any_written = 1; |
| 842 | if (data->check_pktline) |
| 843 | check_pktline(&data->pktline_state, ptr, size); |
| 844 | write_or_die(data->rpc->in, ptr, size); |
| 845 | return size; |
| 846 | } |
| 847 | |
| 848 | static int run_slot(struct active_request_slot *slot, |
| 849 | struct slot_results *results) |
| 850 | { |
| 851 | int err; |
| 852 | struct slot_results results_buf; |
| 853 | |
| 854 | if (!results) |
| 855 | results = &results_buf; |
| 856 | |
| 857 | err = run_one_slot(slot, results); |
| 858 | |
| 859 | if (err != HTTP_OK && err != HTTP_REAUTH) { |
| 860 | struct strbuf msg = STRBUF_INIT; |
| 861 | if (results->http_code && results->http_code != 200) |
| 862 | strbuf_addf(&msg, "HTTP %ld", results->http_code); |
| 863 | if (results->curl_result != CURLE_OK) { |
| 864 | if (msg.len) |
| 865 | strbuf_addch(&msg, ' '); |
| 866 | strbuf_addf(&msg, "curl %d", results->curl_result); |
| 867 | if (curl_errorstr[0]) { |
| 868 | strbuf_addch(&msg, ' '); |
| 869 | strbuf_addstr(&msg, curl_errorstr); |
| 870 | } |
| 871 | } |
| 872 | error(_("RPC failed; %s"), msg.buf); |
| 873 | strbuf_release(&msg); |
| 874 | } |
| 875 | |
| 876 | return err; |
| 877 | } |
| 878 | |
| 879 | static int probe_rpc(struct rpc_state *rpc, struct slot_results *results) |
| 880 | { |
| 881 | struct active_request_slot *slot; |
| 882 | struct curl_slist *headers = http_copy_default_headers(); |
| 883 | struct strbuf buf = STRBUF_INIT; |
| 884 | int err; |
| 885 | |
| 886 | slot = get_active_slot(); |
| 887 | |
| 888 | headers = curl_slist_append(headers, rpc->hdr_content_type); |
| 889 | headers = curl_slist_append(headers, rpc->hdr_accept); |
| 890 | headers = http_append_auth_header(&http_auth, headers); |
| 891 | |
| 892 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0L); |
| 893 | curl_easy_setopt(slot->curl, CURLOPT_POST, 1L); |
| 894 | curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url); |
| 895 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL); |
| 896 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000"); |
| 897 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4L); |
| 898 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); |
| 899 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); |
| 900 | curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &buf); |
| 901 | |
| 902 | err = run_slot(slot, results); |
| 903 | |
| 904 | curl_slist_free_all(headers); |
| 905 | strbuf_release(&buf); |
| 906 | return err; |
| 907 | } |
| 908 | |
| 909 | /* |
| 910 | * If flush_received is true, do not attempt to read any more; just use what's |
| 911 | * in rpc->buf. |
| 912 | */ |
| 913 | static int post_rpc(struct rpc_state *rpc, int stateless_connect, int flush_received) |
| 914 | { |
| 915 | struct active_request_slot *slot; |
| 916 | struct curl_slist *headers = NULL; |
| 917 | int use_gzip = rpc->gzip_request; |
| 918 | char *gzip_body = NULL; |
| 919 | size_t gzip_size = 0; |
| 920 | int err, large_request = 0; |
| 921 | int needs_100_continue = 0; |
| 922 | struct rpc_in_data rpc_in_data; |
| 923 | |
| 924 | /* Try to load the entire request, if we can fit it into the |
| 925 | * allocated buffer space we can use HTTP/1.0 and avoid the |
| 926 | * chunked encoding mess. |
| 927 | */ |
| 928 | if (!flush_received) { |
| 929 | while (1) { |
| 930 | size_t n; |
| 931 | enum packet_read_status status; |
| 932 | |
| 933 | if (!rpc_read_from_out(rpc, 0, &n, &status)) { |
| 934 | large_request = 1; |
| 935 | use_gzip = 0; |
| 936 | break; |
| 937 | } |
| 938 | if (status == PACKET_READ_FLUSH) |
| 939 | break; |
| 940 | } |
| 941 | } |
| 942 | |
| 943 | if (large_request) { |
| 944 | struct slot_results results; |
| 945 | |
| 946 | do { |
| 947 | err = probe_rpc(rpc, &results); |
| 948 | if (err == HTTP_REAUTH) |
| 949 | http_reauth_prepare(0); |
| 950 | } while (err == HTTP_REAUTH); |
| 951 | if (err != HTTP_OK) |
| 952 | return -1; |
| 953 | |
| 954 | if (results.auth_avail & CURLAUTH_GSSNEGOTIATE || http_auth.authtype) |
| 955 | needs_100_continue = 1; |
| 956 | } |
| 957 | |
| 958 | retry: |
| 959 | headers = http_copy_default_headers(); |
| 960 | headers = curl_slist_append(headers, rpc->hdr_content_type); |
| 961 | headers = curl_slist_append(headers, rpc->hdr_accept); |
| 962 | headers = curl_slist_append(headers, needs_100_continue ? |
| 963 | "Expect: 100-continue" : "Expect:"); |
| 964 | |
| 965 | headers = http_append_auth_header(&http_auth, headers); |
| 966 | |
| 967 | /* Add Accept-Language header */ |
| 968 | if (rpc->hdr_accept_language) |
| 969 | headers = curl_slist_append(headers, rpc->hdr_accept_language); |
| 970 | |
| 971 | /* Add the extra Git-Protocol header */ |
| 972 | if (rpc->protocol_header) |
| 973 | headers = curl_slist_append(headers, rpc->protocol_header); |
| 974 | |
| 975 | slot = get_active_slot(); |
| 976 | |
| 977 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0L); |
| 978 | curl_easy_setopt(slot->curl, CURLOPT_POST, 1L); |
| 979 | curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url); |
| 980 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, ""); |
| 981 | |
| 982 | if (large_request) { |
| 983 | /* The request body is large and the size cannot be predicted. |
| 984 | * We must use chunked encoding to send it. |
| 985 | */ |
| 986 | #ifdef GIT_CURL_NEED_TRANSFER_ENCODING_HEADER |
| 987 | headers = curl_slist_append(headers, "Transfer-Encoding: chunked"); |
| 988 | #endif |
| 989 | rpc->initial_buffer = 1; |
| 990 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out); |
| 991 | curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc); |
| 992 | curl_easy_setopt(slot->curl, CURLOPT_SEEKFUNCTION, rpc_seek); |
| 993 | curl_easy_setopt(slot->curl, CURLOPT_SEEKDATA, rpc); |
| 994 | if (options.verbosity > 1) { |
| 995 | fprintf(stderr, "POST %s (chunked)\n", rpc->service_name); |
| 996 | fflush(stderr); |
| 997 | } |
| 998 | |
| 999 | } else if (gzip_body) { |
| 1000 | /* |
| 1001 | * If we are looping to retry authentication, then the previous |
| 1002 | * run will have set up the headers and gzip buffer already, |
| 1003 | * and we just need to send it. |
| 1004 | */ |
| 1005 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body); |
| 1006 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, cast_size_t_to_curl_off_t(gzip_size)); |
| 1007 | |
| 1008 | } else if (use_gzip && 1024 < rpc->len) { |
| 1009 | /* The client backend isn't giving us compressed data so |
| 1010 | * we can try to deflate it ourselves, this may save on |
| 1011 | * the transfer time. |
| 1012 | */ |
| 1013 | git_zstream stream; |
| 1014 | int ret; |
| 1015 | |
| 1016 | git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION); |
| 1017 | gzip_size = git_deflate_bound(&stream, rpc->len); |
| 1018 | gzip_body = xmalloc(gzip_size); |
| 1019 | |
| 1020 | stream.next_in = (unsigned char *)rpc->buf; |
| 1021 | stream.avail_in = rpc->len; |
| 1022 | stream.next_out = (unsigned char *)gzip_body; |
| 1023 | stream.avail_out = gzip_size; |
| 1024 | |
| 1025 | ret = git_deflate(&stream, Z_FINISH); |
| 1026 | if (ret != Z_STREAM_END) |
| 1027 | die(_("cannot deflate request; zlib deflate error %d"), ret); |
| 1028 | |
| 1029 | ret = git_deflate_end_gently(&stream); |
| 1030 | if (ret != Z_OK) |
| 1031 | die(_("cannot deflate request; zlib end error %d"), ret); |
| 1032 | |
| 1033 | gzip_size = stream.total_out; |
| 1034 | |
| 1035 | headers = curl_slist_append(headers, "Content-Encoding: gzip"); |
| 1036 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body); |
| 1037 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, cast_size_t_to_curl_off_t(gzip_size)); |
| 1038 | |
| 1039 | if (options.verbosity > 1) { |
| 1040 | fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n", |
| 1041 | rpc->service_name, |
| 1042 | (unsigned long)rpc->len, (unsigned long)gzip_size); |
| 1043 | fflush(stderr); |
| 1044 | } |
| 1045 | } else { |
| 1046 | /* We know the complete request size in advance, use the |
| 1047 | * more normal Content-Length approach. |
| 1048 | */ |
| 1049 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf); |
| 1050 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, cast_size_t_to_curl_off_t(rpc->len)); |
| 1051 | if (options.verbosity > 1) { |
| 1052 | fprintf(stderr, "POST %s (%lu bytes)\n", |
| 1053 | rpc->service_name, (unsigned long)rpc->len); |
| 1054 | fflush(stderr); |
| 1055 | } |
| 1056 | } |
| 1057 | |
| 1058 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); |
| 1059 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in); |
| 1060 | rpc_in_data.rpc = rpc; |
| 1061 | rpc_in_data.slot = slot; |
| 1062 | rpc_in_data.check_pktline = stateless_connect; |
| 1063 | memset(&rpc_in_data.pktline_state, 0, sizeof(rpc_in_data.pktline_state)); |
| 1064 | curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, &rpc_in_data); |
| 1065 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0L); |
| 1066 | |
| 1067 | |
| 1068 | rpc->any_written = 0; |
| 1069 | err = run_slot(slot, NULL); |
| 1070 | if (err == HTTP_REAUTH && !large_request) { |
| 1071 | http_reauth_prepare(0); |
| 1072 | curl_slist_free_all(headers); |
| 1073 | goto retry; |
| 1074 | } |
| 1075 | if (err != HTTP_OK) |
| 1076 | err = -1; |
| 1077 | |
| 1078 | if (!rpc->any_written) |
| 1079 | err = -1; |
| 1080 | |
| 1081 | if (rpc_in_data.pktline_state.len_filled) |
| 1082 | err = error(_("%d bytes of length header were received"), rpc_in_data.pktline_state.len_filled); |
| 1083 | if (rpc_in_data.pktline_state.remaining) |
| 1084 | err = error(_("%d bytes of body are still expected"), rpc_in_data.pktline_state.remaining); |
| 1085 | |
| 1086 | if (stateless_connect) |
| 1087 | packet_response_end(rpc->in); |
| 1088 | |
| 1089 | curl_slist_free_all(headers); |
| 1090 | free(gzip_body); |
| 1091 | return err; |
| 1092 | } |
| 1093 | |
| 1094 | static int rpc_service(struct rpc_state *rpc, struct discovery *heads, |
| 1095 | const char **client_argv, const struct strbuf *preamble, |
| 1096 | struct strbuf *rpc_result) |
| 1097 | { |
| 1098 | const char *svc = rpc->service_name; |
| 1099 | struct strbuf buf = STRBUF_INIT; |
| 1100 | struct child_process client = CHILD_PROCESS_INIT; |
| 1101 | int err = 0; |
| 1102 | |
| 1103 | client.in = -1; |
| 1104 | client.out = -1; |
| 1105 | client.git_cmd = 1; |
| 1106 | strvec_pushv(&client.args, client_argv); |
| 1107 | if (start_command(&client)) |
| 1108 | exit(1); |
| 1109 | write_or_die(client.in, preamble->buf, preamble->len); |
| 1110 | if (heads) |
| 1111 | write_or_die(client.in, heads->buf, heads->len); |
| 1112 | |
| 1113 | rpc->alloc = http_post_buffer; |
| 1114 | rpc->buf = xmalloc(rpc->alloc); |
| 1115 | rpc->in = client.in; |
| 1116 | rpc->out = client.out; |
| 1117 | |
| 1118 | strbuf_addf(&buf, "%s%s", url.buf, svc); |
| 1119 | rpc->service_url = strbuf_detach(&buf, NULL); |
| 1120 | |
| 1121 | rpc->hdr_accept_language = xstrdup_or_null(http_get_accept_language_header()); |
| 1122 | |
| 1123 | strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc); |
| 1124 | rpc->hdr_content_type = strbuf_detach(&buf, NULL); |
| 1125 | |
| 1126 | strbuf_addf(&buf, "Accept: application/x-%s-result", svc); |
| 1127 | rpc->hdr_accept = strbuf_detach(&buf, NULL); |
| 1128 | |
| 1129 | if (get_protocol_http_header(heads->version, &buf)) |
| 1130 | rpc->protocol_header = strbuf_detach(&buf, NULL); |
| 1131 | else |
| 1132 | rpc->protocol_header = NULL; |
| 1133 | |
| 1134 | while (!err) { |
| 1135 | int n = packet_read(rpc->out, rpc->buf, rpc->alloc, 0); |
| 1136 | if (!n) |
| 1137 | break; |
| 1138 | rpc->pos = 0; |
| 1139 | rpc->len = n; |
| 1140 | err |= post_rpc(rpc, 0, 0); |
| 1141 | } |
| 1142 | |
| 1143 | close(client.in); |
| 1144 | client.in = -1; |
| 1145 | if (!err) { |
| 1146 | strbuf_read(rpc_result, client.out, 0); |
| 1147 | } else { |
| 1148 | char buf[4096]; |
| 1149 | for (;;) |
| 1150 | if (xread(client.out, buf, sizeof(buf)) <= 0) |
| 1151 | break; |
| 1152 | } |
| 1153 | |
| 1154 | close(client.out); |
| 1155 | client.out = -1; |
| 1156 | |
| 1157 | err |= finish_command(&client); |
| 1158 | free(rpc->service_url); |
| 1159 | free(rpc->hdr_content_type); |
| 1160 | free(rpc->hdr_accept); |
| 1161 | free(rpc->hdr_accept_language); |
| 1162 | free(rpc->protocol_header); |
| 1163 | free(rpc->buf); |
| 1164 | strbuf_release(&buf); |
| 1165 | return err; |
| 1166 | } |
| 1167 | |
| 1168 | static int fetch_dumb(int nr_heads, struct ref **to_fetch) |
| 1169 | { |
| 1170 | struct walker *walker; |
| 1171 | char **targets; |
| 1172 | int ret, i; |
| 1173 | |
| 1174 | ALLOC_ARRAY(targets, nr_heads); |
| 1175 | if (options.depth || options.deepen_since) |
| 1176 | die(_("dumb http transport does not support shallow capabilities")); |
| 1177 | for (i = 0; i < nr_heads; i++) |
| 1178 | targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid)); |
| 1179 | |
| 1180 | walker = get_http_walker(url.buf); |
| 1181 | walker->get_verbosely = options.verbosity >= 3; |
| 1182 | walker->get_progress = options.progress; |
| 1183 | walker->get_recover = 0; |
| 1184 | ret = walker_fetch(walker, nr_heads, targets, NULL, NULL); |
| 1185 | walker_free(walker); |
| 1186 | |
| 1187 | for (i = 0; i < nr_heads; i++) |
| 1188 | free(targets[i]); |
| 1189 | free(targets); |
| 1190 | |
| 1191 | return ret ? error(_("fetch failed.")) : 0; |
| 1192 | } |
| 1193 | |
| 1194 | static int fetch_git(struct discovery *heads, |
| 1195 | int nr_heads, struct ref **to_fetch) |
| 1196 | { |
| 1197 | struct rpc_state rpc = RPC_STATE_INIT; |
| 1198 | struct strbuf preamble = STRBUF_INIT; |
| 1199 | int i, err; |
| 1200 | struct strvec args = STRVEC_INIT; |
| 1201 | struct strbuf rpc_result = STRBUF_INIT; |
| 1202 | |
| 1203 | strvec_pushl(&args, "fetch-pack", "--stateless-rpc", |
| 1204 | "--stdin", "--lock-pack", NULL); |
| 1205 | if (options.followtags) |
| 1206 | strvec_push(&args, "--include-tag"); |
| 1207 | if (options.thin) |
| 1208 | strvec_push(&args, "--thin"); |
| 1209 | if (options.verbosity >= 3) |
| 1210 | strvec_pushl(&args, "-v", "-v", NULL); |
| 1211 | if (options.check_self_contained_and_connected) |
| 1212 | strvec_push(&args, "--check-self-contained-and-connected"); |
| 1213 | if (options.cloning) |
| 1214 | strvec_push(&args, "--cloning"); |
| 1215 | if (options.update_shallow) |
| 1216 | strvec_push(&args, "--update-shallow"); |
| 1217 | if (!options.progress) |
| 1218 | strvec_push(&args, "--no-progress"); |
| 1219 | if (options.depth) |
| 1220 | strvec_pushf(&args, "--depth=%lu", options.depth); |
| 1221 | if (options.deepen_since) |
| 1222 | strvec_pushf(&args, "--shallow-since=%s", options.deepen_since); |
| 1223 | for (i = 0; i < options.deepen_not.nr; i++) |
| 1224 | strvec_pushf(&args, "--shallow-exclude=%s", |
| 1225 | options.deepen_not.items[i].string); |
| 1226 | if (options.deepen_relative && options.depth) |
| 1227 | strvec_push(&args, "--deepen-relative"); |
| 1228 | if (options.from_promisor) |
| 1229 | strvec_push(&args, "--from-promisor"); |
| 1230 | if (options.refetch) |
| 1231 | strvec_push(&args, "--refetch"); |
| 1232 | if (options.filter) |
| 1233 | strvec_pushf(&args, "--filter=%s", options.filter); |
| 1234 | strvec_push(&args, url.buf); |
| 1235 | |
| 1236 | for (i = 0; i < nr_heads; i++) { |
| 1237 | struct ref *ref = to_fetch[i]; |
| 1238 | if (!*ref->name) |
| 1239 | die(_("cannot fetch by sha1 over smart http")); |
| 1240 | packet_buf_write(&preamble, "%s %s\n", |
| 1241 | oid_to_hex(&ref->old_oid), ref->name); |
| 1242 | } |
| 1243 | packet_buf_flush(&preamble); |
| 1244 | |
| 1245 | memset(&rpc, 0, sizeof(rpc)); |
| 1246 | rpc.service_name = "git-upload-pack"; |
| 1247 | rpc.gzip_request = 1; |
| 1248 | |
| 1249 | err = rpc_service(&rpc, heads, args.v, &preamble, &rpc_result); |
| 1250 | if (rpc_result.len) |
| 1251 | write_or_die(1, rpc_result.buf, rpc_result.len); |
| 1252 | strbuf_release(&rpc_result); |
| 1253 | strbuf_release(&preamble); |
| 1254 | strvec_clear(&args); |
| 1255 | return err; |
| 1256 | } |
| 1257 | |
| 1258 | static int fetch(int nr_heads, struct ref **to_fetch) |
| 1259 | { |
| 1260 | struct discovery *d = discover_refs("git-upload-pack", 0); |
| 1261 | if (d->proto_git) |
| 1262 | return fetch_git(d, nr_heads, to_fetch); |
| 1263 | else |
| 1264 | return fetch_dumb(nr_heads, to_fetch); |
| 1265 | } |
| 1266 | |
| 1267 | static void parse_fetch(struct strbuf *buf) |
| 1268 | { |
| 1269 | struct ref **to_fetch = NULL; |
| 1270 | struct ref *list_head = NULL; |
| 1271 | struct ref **list = &list_head; |
| 1272 | int alloc_heads = 0, nr_heads = 0; |
| 1273 | |
| 1274 | do { |
| 1275 | const char *p; |
| 1276 | if (skip_prefix(buf->buf, "fetch ", &p)) { |
| 1277 | const char *name; |
| 1278 | struct ref *ref; |
| 1279 | struct object_id old_oid; |
| 1280 | const char *q; |
| 1281 | |
| 1282 | if (parse_oid_hex(p, &old_oid, &q)) |
| 1283 | die(_("protocol error: expected sha/ref, got '%s'"), p); |
| 1284 | if (*q == ' ') |
| 1285 | name = q + 1; |
| 1286 | else if (!*q) |
| 1287 | name = ""; |
| 1288 | else |
| 1289 | die(_("protocol error: expected sha/ref, got '%s'"), p); |
| 1290 | |
| 1291 | ref = alloc_ref(name); |
| 1292 | oidcpy(&ref->old_oid, &old_oid); |
| 1293 | |
| 1294 | *list = ref; |
| 1295 | list = &ref->next; |
| 1296 | |
| 1297 | ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads); |
| 1298 | to_fetch[nr_heads++] = ref; |
| 1299 | } |
| 1300 | else |
| 1301 | die(_("http transport does not support %s"), buf->buf); |
| 1302 | |
| 1303 | strbuf_reset(buf); |
| 1304 | if (strbuf_getline_lf(buf, stdin) == EOF) |
| 1305 | return; |
| 1306 | if (!*buf->buf) |
| 1307 | break; |
| 1308 | } while (1); |
| 1309 | |
| 1310 | if (fetch(nr_heads, to_fetch)) |
| 1311 | exit(128); /* error already reported */ |
| 1312 | free_refs(list_head); |
| 1313 | free(to_fetch); |
| 1314 | |
| 1315 | printf("\n"); |
| 1316 | fflush(stdout); |
| 1317 | strbuf_reset(buf); |
| 1318 | } |
| 1319 | |
| 1320 | static void parse_get(const char *arg) |
| 1321 | { |
| 1322 | struct strbuf url = STRBUF_INIT; |
| 1323 | struct strbuf path = STRBUF_INIT; |
| 1324 | const char *space; |
| 1325 | |
| 1326 | space = strchr(arg, ' '); |
| 1327 | |
| 1328 | if (!space) |
| 1329 | die(_("protocol error: expected '<url> <path>', missing space")); |
| 1330 | |
| 1331 | strbuf_add(&url, arg, space - arg); |
| 1332 | strbuf_addstr(&path, space + 1); |
| 1333 | |
| 1334 | if (http_get_file(url.buf, path.buf, NULL)) |
| 1335 | die(_("failed to download file at URL '%s'"), url.buf); |
| 1336 | |
| 1337 | strbuf_release(&url); |
| 1338 | strbuf_release(&path); |
| 1339 | printf("\n"); |
| 1340 | fflush(stdout); |
| 1341 | } |
| 1342 | |
| 1343 | static int push_dav(const char **specs) |
| 1344 | { |
| 1345 | struct child_process child = CHILD_PROCESS_INIT; |
| 1346 | |
| 1347 | child.git_cmd = 1; |
| 1348 | strvec_push(&child.args, "http-push"); |
| 1349 | strvec_push(&child.args, "--helper-status"); |
| 1350 | if (options.dry_run) |
| 1351 | strvec_push(&child.args, "--dry-run"); |
| 1352 | if (options.verbosity > 1) |
| 1353 | strvec_push(&child.args, "--verbose"); |
| 1354 | strvec_push(&child.args, url.buf); |
| 1355 | strvec_pushv(&child.args, specs); |
| 1356 | |
| 1357 | if (run_command(&child)) |
| 1358 | die(_("git-http-push failed")); |
| 1359 | return 0; |
| 1360 | } |
| 1361 | |
| 1362 | static int push_git(struct discovery *heads, const char **specs) |
| 1363 | { |
| 1364 | struct rpc_state rpc = RPC_STATE_INIT; |
| 1365 | int i, err; |
| 1366 | struct strvec args; |
| 1367 | struct string_list_item *cas_option; |
| 1368 | struct strbuf preamble = STRBUF_INIT; |
| 1369 | struct strbuf rpc_result = STRBUF_INIT; |
| 1370 | |
| 1371 | strvec_init(&args); |
| 1372 | strvec_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status", |
| 1373 | NULL); |
| 1374 | |
| 1375 | if (options.thin) |
| 1376 | strvec_push(&args, "--thin"); |
| 1377 | if (options.dry_run) |
| 1378 | strvec_push(&args, "--dry-run"); |
| 1379 | if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS) |
| 1380 | strvec_push(&args, "--signed=yes"); |
| 1381 | else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED) |
| 1382 | strvec_push(&args, "--signed=if-asked"); |
| 1383 | if (options.atomic) |
| 1384 | strvec_push(&args, "--atomic"); |
| 1385 | if (options.verbosity == 0) |
| 1386 | strvec_push(&args, "--quiet"); |
| 1387 | else if (options.verbosity > 1) |
| 1388 | strvec_push(&args, "--verbose"); |
| 1389 | for (i = 0; i < options.push_options.nr; i++) |
| 1390 | strvec_pushf(&args, "--push-option=%s", |
| 1391 | options.push_options.items[i].string); |
| 1392 | strvec_push(&args, options.progress ? "--progress" : "--no-progress"); |
| 1393 | for_each_string_list_item(cas_option, &cas_options) |
| 1394 | strvec_push(&args, cas_option->string); |
| 1395 | strvec_push(&args, url.buf); |
| 1396 | |
| 1397 | if (options.force_if_includes) |
| 1398 | strvec_push(&args, "--force-if-includes"); |
| 1399 | |
| 1400 | strvec_push(&args, "--stdin"); |
| 1401 | for (; *specs; specs++) |
| 1402 | packet_buf_write(&preamble, "%s\n", *specs); |
| 1403 | packet_buf_flush(&preamble); |
| 1404 | |
| 1405 | memset(&rpc, 0, sizeof(rpc)); |
| 1406 | rpc.service_name = "git-receive-pack"; |
| 1407 | |
| 1408 | err = rpc_service(&rpc, heads, args.v, &preamble, &rpc_result); |
| 1409 | if (rpc_result.len) |
| 1410 | write_or_die(1, rpc_result.buf, rpc_result.len); |
| 1411 | strbuf_release(&rpc_result); |
| 1412 | strbuf_release(&preamble); |
| 1413 | strvec_clear(&args); |
| 1414 | return err; |
| 1415 | } |
| 1416 | |
| 1417 | static int push(const char **specs) |
| 1418 | { |
| 1419 | struct discovery *heads = discover_refs("git-receive-pack", 1); |
| 1420 | int ret; |
| 1421 | |
| 1422 | if (heads->proto_git) |
| 1423 | ret = push_git(heads, specs); |
| 1424 | else |
| 1425 | ret = push_dav(specs); |
| 1426 | free_discovery(heads); |
| 1427 | return ret; |
| 1428 | } |
| 1429 | |
| 1430 | static void parse_push(struct strbuf *buf) |
| 1431 | { |
| 1432 | struct strvec specs = STRVEC_INIT; |
| 1433 | int ret; |
| 1434 | |
| 1435 | do { |
| 1436 | const char *arg; |
| 1437 | if (skip_prefix(buf->buf, "push ", &arg)) |
| 1438 | strvec_push(&specs, arg); |
| 1439 | else |
| 1440 | die(_("http transport does not support %s"), buf->buf); |
| 1441 | |
| 1442 | strbuf_reset(buf); |
| 1443 | if (strbuf_getline_lf(buf, stdin) == EOF) |
| 1444 | goto free_specs; |
| 1445 | if (!*buf->buf) |
| 1446 | break; |
| 1447 | } while (1); |
| 1448 | |
| 1449 | ret = push(specs.v); |
| 1450 | printf("\n"); |
| 1451 | fflush(stdout); |
| 1452 | |
| 1453 | if (ret) |
| 1454 | exit(128); /* error already reported */ |
| 1455 | |
| 1456 | free_specs: |
| 1457 | strvec_clear(&specs); |
| 1458 | } |
| 1459 | |
| 1460 | static int stateless_connect(const char *service_name) |
| 1461 | { |
| 1462 | struct discovery *discover; |
| 1463 | struct rpc_state rpc = RPC_STATE_INIT; |
| 1464 | struct strbuf buf = STRBUF_INIT; |
| 1465 | const char *accept_language; |
| 1466 | |
| 1467 | /* |
| 1468 | * Run the info/refs request and see if the server supports protocol |
| 1469 | * v2. If and only if the server supports v2 can we successfully |
| 1470 | * establish a stateless connection, otherwise we need to tell the |
| 1471 | * client to fallback to using other transport helper functions to |
| 1472 | * complete their request. |
| 1473 | * |
| 1474 | * The "git-upload-archive" service is a read-only operation. Fallback |
| 1475 | * to use "git-upload-pack" service to discover protocol version. |
| 1476 | */ |
| 1477 | if (!strcmp(service_name, "git-upload-archive")) |
| 1478 | discover = discover_refs("git-upload-pack", 0); |
| 1479 | else |
| 1480 | discover = discover_refs(service_name, 0); |
| 1481 | if (discover->version != protocol_v2) { |
| 1482 | printf("fallback\n"); |
| 1483 | fflush(stdout); |
| 1484 | return -1; |
| 1485 | } else { |
| 1486 | /* Stateless Connection established */ |
| 1487 | printf("\n"); |
| 1488 | fflush(stdout); |
| 1489 | } |
| 1490 | accept_language = http_get_accept_language_header(); |
| 1491 | if (accept_language) |
| 1492 | rpc.hdr_accept_language = xstrfmt("%s", accept_language); |
| 1493 | |
| 1494 | rpc.service_name = service_name; |
| 1495 | rpc.service_url = xstrfmt("%s%s", url.buf, rpc.service_name); |
| 1496 | rpc.hdr_content_type = xstrfmt("Content-Type: application/x-%s-request", rpc.service_name); |
| 1497 | rpc.hdr_accept = xstrfmt("Accept: application/x-%s-result", rpc.service_name); |
| 1498 | if (get_protocol_http_header(discover->version, &buf)) { |
| 1499 | rpc.protocol_header = strbuf_detach(&buf, NULL); |
| 1500 | } else { |
| 1501 | rpc.protocol_header = NULL; |
| 1502 | strbuf_release(&buf); |
| 1503 | } |
| 1504 | rpc.buf = xmalloc(http_post_buffer); |
| 1505 | rpc.alloc = http_post_buffer; |
| 1506 | rpc.len = 0; |
| 1507 | rpc.pos = 0; |
| 1508 | rpc.in = 1; |
| 1509 | rpc.out = 0; |
| 1510 | rpc.any_written = 0; |
| 1511 | rpc.gzip_request = 1; |
| 1512 | rpc.initial_buffer = 0; |
| 1513 | rpc.write_line_lengths = 1; |
| 1514 | rpc.flush_read_but_not_sent = 0; |
| 1515 | |
| 1516 | /* |
| 1517 | * Dump the capability listing that we got from the server earlier |
| 1518 | * during the info/refs request. This does not work with the |
| 1519 | * "git-upload-archive" service. |
| 1520 | */ |
| 1521 | if (strcmp(service_name, "git-upload-archive")) |
| 1522 | write_or_die(rpc.in, discover->buf, discover->len); |
| 1523 | |
| 1524 | /* Until we see EOF keep sending POSTs */ |
| 1525 | while (1) { |
| 1526 | size_t avail; |
| 1527 | enum packet_read_status status; |
| 1528 | |
| 1529 | if (!rpc_read_from_out(&rpc, PACKET_READ_GENTLE_ON_EOF, &avail, |
| 1530 | &status)) |
| 1531 | BUG("The entire rpc->buf should be larger than LARGE_PACKET_MAX"); |
| 1532 | if (status == PACKET_READ_EOF) |
| 1533 | break; |
| 1534 | if (post_rpc(&rpc, 1, status == PACKET_READ_FLUSH)) |
| 1535 | /* We would have an err here */ |
| 1536 | break; |
| 1537 | /* Reset the buffer for next request */ |
| 1538 | rpc.len = 0; |
| 1539 | } |
| 1540 | |
| 1541 | free(rpc.service_url); |
| 1542 | free(rpc.hdr_content_type); |
| 1543 | free(rpc.hdr_accept); |
| 1544 | free(rpc.hdr_accept_language); |
| 1545 | free(rpc.protocol_header); |
| 1546 | free(rpc.buf); |
| 1547 | strbuf_release(&buf); |
| 1548 | |
| 1549 | return 0; |
| 1550 | } |
| 1551 | |
| 1552 | int cmd_main(int argc, const char **argv) |
| 1553 | { |
| 1554 | struct strbuf buf = STRBUF_INIT; |
| 1555 | int nongit; |
| 1556 | int ret = 1; |
| 1557 | |
| 1558 | setup_git_directory_gently(the_repository, &nongit); |
| 1559 | if (argc < 2) { |
| 1560 | error(_("remote-curl: usage: git remote-curl <remote> [<url>]")); |
| 1561 | goto cleanup; |
| 1562 | } |
| 1563 | |
| 1564 | /* |
| 1565 | * yuck, see 9e89dcb66a (builtin/ls-remote: fall back to SHA1 outside |
| 1566 | * of a repo, 2024-08-02) |
| 1567 | */ |
| 1568 | if (nongit) |
| 1569 | repo_set_hash_algo(the_repository, GIT_HASH_DEFAULT); |
| 1570 | |
| 1571 | options.verbosity = 1; |
| 1572 | options.progress = !!isatty(2); |
| 1573 | options.thin = 1; |
| 1574 | string_list_init_dup(&options.deepen_not); |
| 1575 | string_list_init_dup(&options.push_options); |
| 1576 | |
| 1577 | /* |
| 1578 | * Just report "remote-curl" here (folding all the various aliases |
| 1579 | * ("git-remote-http", "git-remote-https", and etc.) here since they |
| 1580 | * are all just copies of the same actual executable. |
| 1581 | */ |
| 1582 | trace2_cmd_name("remote-curl"); |
| 1583 | |
| 1584 | remote = remote_get(argv[1]); |
| 1585 | |
| 1586 | if (argc > 2) { |
| 1587 | end_url_with_slash(&url, argv[2]); |
| 1588 | } else { |
| 1589 | end_url_with_slash(&url, remote->url.v[0]); |
| 1590 | } |
| 1591 | |
| 1592 | http_init(remote, url.buf, 0); |
| 1593 | |
| 1594 | do { |
| 1595 | const char *arg; |
| 1596 | |
| 1597 | if (strbuf_getline_lf(&buf, stdin) == EOF) { |
| 1598 | if (ferror(stdin)) |
| 1599 | error(_("remote-curl: error reading command stream from git")); |
| 1600 | goto cleanup; |
| 1601 | } |
| 1602 | if (buf.len == 0) |
| 1603 | break; |
| 1604 | if (starts_with(buf.buf, "fetch ")) { |
| 1605 | if (nongit) { |
| 1606 | setup_git_directory_gently(the_repository, &nongit); |
| 1607 | if (nongit) |
| 1608 | die(_("remote-curl: fetch attempted without a local repo")); |
| 1609 | } |
| 1610 | parse_fetch(&buf); |
| 1611 | |
| 1612 | } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) { |
| 1613 | int for_push = !!strstr(buf.buf + 4, "for-push"); |
| 1614 | output_refs(get_refs(for_push)); |
| 1615 | |
| 1616 | } else if (starts_with(buf.buf, "push ")) { |
| 1617 | parse_push(&buf); |
| 1618 | |
| 1619 | } else if (skip_prefix(buf.buf, "option ", &arg)) { |
| 1620 | const char *value = strchrnul(arg, ' '); |
| 1621 | size_t arglen = value - arg; |
| 1622 | int result; |
| 1623 | |
| 1624 | if (*value) |
| 1625 | value++; /* skip over SP */ |
| 1626 | else |
| 1627 | value = "true"; |
| 1628 | |
| 1629 | result = set_option(arg, arglen, value); |
| 1630 | if (!result) |
| 1631 | printf("ok\n"); |
| 1632 | else if (result < 0) |
| 1633 | printf("error invalid value\n"); |
| 1634 | else |
| 1635 | printf("unsupported\n"); |
| 1636 | fflush(stdout); |
| 1637 | |
| 1638 | } else if (skip_prefix(buf.buf, "get ", &arg)) { |
| 1639 | parse_get(arg); |
| 1640 | fflush(stdout); |
| 1641 | |
| 1642 | } else if (!strcmp(buf.buf, "capabilities")) { |
| 1643 | printf("stateless-connect\n"); |
| 1644 | printf("fetch\n"); |
| 1645 | printf("get\n"); |
| 1646 | printf("option\n"); |
| 1647 | printf("push\n"); |
| 1648 | printf("check-connectivity\n"); |
| 1649 | printf("object-format\n"); |
| 1650 | printf("\n"); |
| 1651 | fflush(stdout); |
| 1652 | } else if (skip_prefix(buf.buf, "stateless-connect ", &arg)) { |
| 1653 | if (!stateless_connect(arg)) |
| 1654 | break; |
| 1655 | } else { |
| 1656 | error(_("remote-curl: unknown command '%s' from git"), buf.buf); |
| 1657 | goto cleanup; |
| 1658 | } |
| 1659 | strbuf_reset(&buf); |
| 1660 | } while (1); |
| 1661 | |
| 1662 | http_cleanup(); |
| 1663 | ret = 0; |
| 1664 | cleanup: |
| 1665 | strbuf_release(&buf); |
| 1666 | |
| 1667 | return ret; |
| 1668 | } |