Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 1 | #include "cache.h" |
| 2 | #include "refs.h" |
| 3 | #include "pkt-line.h" |
| 4 | #include "object.h" |
| 5 | #include "tag.h" |
| 6 | #include "exec_cmd.h" |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 7 | #include "run-command.h" |
| 8 | #include "string-list.h" |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 9 | |
| 10 | static const char content_type[] = "Content-Type"; |
| 11 | static const char content_length[] = "Content-Length"; |
| 12 | static const char last_modified[] = "Last-Modified"; |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 13 | static int getanyfile = 1; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 14 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 15 | static struct string_list *query_params; |
| 16 | |
| 17 | struct rpc_service { |
| 18 | const char *name; |
| 19 | const char *config_name; |
| 20 | signed enabled : 2; |
| 21 | }; |
| 22 | |
| 23 | static struct rpc_service rpc_service[] = { |
| 24 | { "upload-pack", "uploadpack", 1 }, |
| 25 | { "receive-pack", "receivepack", -1 }, |
| 26 | }; |
| 27 | |
| 28 | static int decode_char(const char *q) |
| 29 | { |
| 30 | int i; |
| 31 | unsigned char val = 0; |
| 32 | for (i = 0; i < 2; i++) { |
| 33 | unsigned char c = *q++; |
| 34 | val <<= 4; |
| 35 | if (c >= '0' && c <= '9') |
| 36 | val += c - '0'; |
| 37 | else if (c >= 'a' && c <= 'f') |
| 38 | val += c - 'a' + 10; |
| 39 | else if (c >= 'A' && c <= 'F') |
| 40 | val += c - 'A' + 10; |
| 41 | else |
| 42 | return -1; |
| 43 | } |
| 44 | return val; |
| 45 | } |
| 46 | |
| 47 | static char *decode_parameter(const char **query, int is_name) |
| 48 | { |
| 49 | const char *q = *query; |
| 50 | struct strbuf out; |
| 51 | |
| 52 | strbuf_init(&out, 16); |
| 53 | do { |
| 54 | unsigned char c = *q; |
| 55 | |
| 56 | if (!c) |
| 57 | break; |
| 58 | if (c == '&' || (is_name && c == '=')) { |
| 59 | q++; |
| 60 | break; |
| 61 | } |
| 62 | |
| 63 | if (c == '%') { |
| 64 | int val = decode_char(q + 1); |
| 65 | if (0 <= val) { |
| 66 | strbuf_addch(&out, val); |
| 67 | q += 3; |
| 68 | continue; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | if (c == '+') |
| 73 | strbuf_addch(&out, ' '); |
| 74 | else |
| 75 | strbuf_addch(&out, c); |
| 76 | q++; |
| 77 | } while (1); |
| 78 | *query = q; |
| 79 | return strbuf_detach(&out, NULL); |
| 80 | } |
| 81 | |
| 82 | static struct string_list *get_parameters(void) |
| 83 | { |
| 84 | if (!query_params) { |
| 85 | const char *query = getenv("QUERY_STRING"); |
| 86 | |
| 87 | query_params = xcalloc(1, sizeof(*query_params)); |
| 88 | while (query && *query) { |
| 89 | char *name = decode_parameter(&query, 1); |
| 90 | char *value = decode_parameter(&query, 0); |
| 91 | struct string_list_item *i; |
| 92 | |
| 93 | i = string_list_lookup(name, query_params); |
| 94 | if (!i) |
| 95 | i = string_list_insert(name, query_params); |
| 96 | else |
| 97 | free(i->util); |
| 98 | i->util = value; |
| 99 | } |
| 100 | } |
| 101 | return query_params; |
| 102 | } |
| 103 | |
| 104 | static const char *get_parameter(const char *name) |
| 105 | { |
| 106 | struct string_list_item *i; |
| 107 | i = string_list_lookup(name, get_parameters()); |
| 108 | return i ? i->util : NULL; |
| 109 | } |
| 110 | |
Tarmigan Casebolt | 3548701 | 2009-11-14 13:10:58 -0800 | [diff] [blame] | 111 | __attribute__((format (printf, 2, 3))) |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 112 | static void format_write(int fd, const char *fmt, ...) |
| 113 | { |
| 114 | static char buffer[1024]; |
| 115 | |
| 116 | va_list args; |
| 117 | unsigned n; |
| 118 | |
| 119 | va_start(args, fmt); |
| 120 | n = vsnprintf(buffer, sizeof(buffer), fmt, args); |
| 121 | va_end(args); |
| 122 | if (n >= sizeof(buffer)) |
| 123 | die("protocol error: impossibly long line"); |
| 124 | |
| 125 | safe_write(fd, buffer, n); |
| 126 | } |
| 127 | |
| 128 | static void http_status(unsigned code, const char *msg) |
| 129 | { |
| 130 | format_write(1, "Status: %u %s\r\n", code, msg); |
| 131 | } |
| 132 | |
| 133 | static void hdr_str(const char *name, const char *value) |
| 134 | { |
| 135 | format_write(1, "%s: %s\r\n", name, value); |
| 136 | } |
| 137 | |
Shawn O. Pearce | 4a5328d | 2009-11-11 20:42:41 -0800 | [diff] [blame] | 138 | static void hdr_int(const char *name, uintmax_t value) |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 139 | { |
| 140 | format_write(1, "%s: %" PRIuMAX "\r\n", name, value); |
| 141 | } |
| 142 | |
| 143 | static void hdr_date(const char *name, unsigned long when) |
| 144 | { |
| 145 | const char *value = show_date(when, 0, DATE_RFC2822); |
| 146 | hdr_str(name, value); |
| 147 | } |
| 148 | |
| 149 | static void hdr_nocache(void) |
| 150 | { |
| 151 | hdr_str("Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); |
| 152 | hdr_str("Pragma", "no-cache"); |
| 153 | hdr_str("Cache-Control", "no-cache, max-age=0, must-revalidate"); |
| 154 | } |
| 155 | |
| 156 | static void hdr_cache_forever(void) |
| 157 | { |
| 158 | unsigned long now = time(NULL); |
| 159 | hdr_date("Date", now); |
| 160 | hdr_date("Expires", now + 31536000); |
| 161 | hdr_str("Cache-Control", "public, max-age=31536000"); |
| 162 | } |
| 163 | |
| 164 | static void end_headers(void) |
| 165 | { |
| 166 | safe_write(1, "\r\n", 2); |
| 167 | } |
| 168 | |
Tarmigan Casebolt | 3548701 | 2009-11-14 13:10:58 -0800 | [diff] [blame] | 169 | __attribute__((format (printf, 1, 2))) |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 170 | static NORETURN void not_found(const char *err, ...) |
| 171 | { |
| 172 | va_list params; |
| 173 | |
| 174 | http_status(404, "Not Found"); |
| 175 | hdr_nocache(); |
| 176 | end_headers(); |
| 177 | |
| 178 | va_start(params, err); |
| 179 | if (err && *err) |
| 180 | vfprintf(stderr, err, params); |
| 181 | va_end(params); |
| 182 | exit(0); |
| 183 | } |
| 184 | |
Tarmigan Casebolt | 3548701 | 2009-11-14 13:10:58 -0800 | [diff] [blame] | 185 | __attribute__((format (printf, 1, 2))) |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 186 | static NORETURN void forbidden(const char *err, ...) |
| 187 | { |
| 188 | va_list params; |
| 189 | |
| 190 | http_status(403, "Forbidden"); |
| 191 | hdr_nocache(); |
| 192 | end_headers(); |
| 193 | |
| 194 | va_start(params, err); |
| 195 | if (err && *err) |
| 196 | vfprintf(stderr, err, params); |
| 197 | va_end(params); |
| 198 | exit(0); |
| 199 | } |
| 200 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 201 | static void select_getanyfile(void) |
| 202 | { |
| 203 | if (!getanyfile) |
| 204 | forbidden("Unsupported service: getanyfile"); |
| 205 | } |
| 206 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 207 | static void send_strbuf(const char *type, struct strbuf *buf) |
| 208 | { |
| 209 | hdr_int(content_length, buf->len); |
| 210 | hdr_str(content_type, type); |
| 211 | end_headers(); |
| 212 | safe_write(1, buf->buf, buf->len); |
| 213 | } |
| 214 | |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 215 | static void send_local_file(const char *the_type, const char *name) |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 216 | { |
| 217 | const char *p = git_path("%s", name); |
| 218 | size_t buf_alloc = 8192; |
| 219 | char *buf = xmalloc(buf_alloc); |
| 220 | int fd; |
| 221 | struct stat sb; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 222 | |
| 223 | fd = open(p, O_RDONLY); |
| 224 | if (fd < 0) |
| 225 | not_found("Cannot open '%s': %s", p, strerror(errno)); |
| 226 | if (fstat(fd, &sb) < 0) |
| 227 | die_errno("Cannot stat '%s'", p); |
| 228 | |
Shawn O. Pearce | 4a5328d | 2009-11-11 20:42:41 -0800 | [diff] [blame] | 229 | hdr_int(content_length, sb.st_size); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 230 | hdr_str(content_type, the_type); |
| 231 | hdr_date(last_modified, sb.st_mtime); |
| 232 | end_headers(); |
| 233 | |
Shawn O. Pearce | 4a5328d | 2009-11-11 20:42:41 -0800 | [diff] [blame] | 234 | for (;;) { |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 235 | ssize_t n = xread(fd, buf, buf_alloc); |
| 236 | if (n < 0) |
| 237 | die_errno("Cannot read '%s'", p); |
| 238 | if (!n) |
| 239 | break; |
| 240 | safe_write(1, buf, n); |
| 241 | } |
| 242 | close(fd); |
| 243 | free(buf); |
| 244 | } |
| 245 | |
| 246 | static void get_text_file(char *name) |
| 247 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 248 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 249 | hdr_nocache(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 250 | send_local_file("text/plain", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | static void get_loose_object(char *name) |
| 254 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 255 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 256 | hdr_cache_forever(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 257 | send_local_file("application/x-git-loose-object", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | static void get_pack_file(char *name) |
| 261 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 262 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 263 | hdr_cache_forever(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 264 | send_local_file("application/x-git-packed-objects", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | static void get_idx_file(char *name) |
| 268 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 269 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 270 | hdr_cache_forever(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 271 | send_local_file("application/x-git-packed-objects-toc", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 272 | } |
| 273 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 274 | static int http_config(const char *var, const char *value, void *cb) |
| 275 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 276 | if (!strcmp(var, "http.getanyfile")) { |
| 277 | getanyfile = git_config_bool(var, value); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 278 | return 0; |
| 279 | } |
| 280 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 281 | if (!prefixcmp(var, "http.")) { |
| 282 | int i; |
| 283 | |
| 284 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
| 285 | struct rpc_service *svc = &rpc_service[i]; |
| 286 | if (!strcmp(var + 5, svc->config_name)) { |
| 287 | svc->enabled = git_config_bool(var, value); |
| 288 | return 0; |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 293 | /* we are not interested in parsing any other configuration here */ |
| 294 | return 0; |
| 295 | } |
| 296 | |
| 297 | static struct rpc_service *select_service(const char *name) |
| 298 | { |
| 299 | struct rpc_service *svc = NULL; |
| 300 | int i; |
| 301 | |
| 302 | if (prefixcmp(name, "git-")) |
| 303 | forbidden("Unsupported service: '%s'", name); |
| 304 | |
| 305 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
| 306 | struct rpc_service *s = &rpc_service[i]; |
| 307 | if (!strcmp(s->name, name + 4)) { |
| 308 | svc = s; |
| 309 | break; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | if (!svc) |
| 314 | forbidden("Unsupported service: '%s'", name); |
| 315 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 316 | if (svc->enabled < 0) { |
| 317 | const char *user = getenv("REMOTE_USER"); |
| 318 | svc->enabled = (user && *user) ? 1 : 0; |
| 319 | } |
| 320 | if (!svc->enabled) |
| 321 | forbidden("Service not enabled: '%s'", svc->name); |
| 322 | return svc; |
| 323 | } |
| 324 | |
| 325 | static void inflate_request(const char *prog_name, int out) |
| 326 | { |
| 327 | z_stream stream; |
| 328 | unsigned char in_buf[8192]; |
| 329 | unsigned char out_buf[8192]; |
| 330 | unsigned long cnt = 0; |
| 331 | int ret; |
| 332 | |
| 333 | memset(&stream, 0, sizeof(stream)); |
| 334 | ret = inflateInit2(&stream, (15 + 16)); |
| 335 | if (ret != Z_OK) |
| 336 | die("cannot start zlib inflater, zlib err %d", ret); |
| 337 | |
| 338 | while (1) { |
| 339 | ssize_t n = xread(0, in_buf, sizeof(in_buf)); |
| 340 | if (n <= 0) |
| 341 | die("request ended in the middle of the gzip stream"); |
| 342 | |
| 343 | stream.next_in = in_buf; |
| 344 | stream.avail_in = n; |
| 345 | |
| 346 | while (0 < stream.avail_in) { |
| 347 | int ret; |
| 348 | |
| 349 | stream.next_out = out_buf; |
| 350 | stream.avail_out = sizeof(out_buf); |
| 351 | |
| 352 | ret = inflate(&stream, Z_NO_FLUSH); |
| 353 | if (ret != Z_OK && ret != Z_STREAM_END) |
| 354 | die("zlib error inflating request, result %d", ret); |
| 355 | |
| 356 | n = stream.total_out - cnt; |
| 357 | if (write_in_full(out, out_buf, n) != n) |
| 358 | die("%s aborted reading request", prog_name); |
| 359 | cnt += n; |
| 360 | |
| 361 | if (ret == Z_STREAM_END) |
| 362 | goto done; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | done: |
| 367 | inflateEnd(&stream); |
| 368 | close(out); |
| 369 | } |
| 370 | |
| 371 | static void run_service(const char **argv) |
| 372 | { |
| 373 | const char *encoding = getenv("HTTP_CONTENT_ENCODING"); |
| 374 | const char *user = getenv("REMOTE_USER"); |
| 375 | const char *host = getenv("REMOTE_ADDR"); |
| 376 | char *env[3]; |
| 377 | struct strbuf buf = STRBUF_INIT; |
| 378 | int gzipped_request = 0; |
| 379 | struct child_process cld; |
| 380 | |
| 381 | if (encoding && !strcmp(encoding, "gzip")) |
| 382 | gzipped_request = 1; |
| 383 | else if (encoding && !strcmp(encoding, "x-gzip")) |
| 384 | gzipped_request = 1; |
| 385 | |
| 386 | if (!user || !*user) |
| 387 | user = "anonymous"; |
| 388 | if (!host || !*host) |
| 389 | host = "(none)"; |
| 390 | |
| 391 | memset(&env, 0, sizeof(env)); |
| 392 | strbuf_addf(&buf, "GIT_COMMITTER_NAME=%s", user); |
| 393 | env[0] = strbuf_detach(&buf, NULL); |
| 394 | |
| 395 | strbuf_addf(&buf, "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); |
| 396 | env[1] = strbuf_detach(&buf, NULL); |
| 397 | env[2] = NULL; |
| 398 | |
| 399 | memset(&cld, 0, sizeof(cld)); |
| 400 | cld.argv = argv; |
| 401 | cld.env = (const char *const *)env; |
| 402 | if (gzipped_request) |
| 403 | cld.in = -1; |
| 404 | cld.git_cmd = 1; |
| 405 | if (start_command(&cld)) |
| 406 | exit(1); |
| 407 | |
| 408 | close(1); |
| 409 | if (gzipped_request) |
| 410 | inflate_request(argv[0], cld.in); |
| 411 | else |
| 412 | close(0); |
| 413 | |
| 414 | if (finish_command(&cld)) |
| 415 | exit(1); |
| 416 | free(env[0]); |
| 417 | free(env[1]); |
| 418 | strbuf_release(&buf); |
| 419 | } |
| 420 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 421 | static int show_text_ref(const char *name, const unsigned char *sha1, |
| 422 | int flag, void *cb_data) |
| 423 | { |
| 424 | struct strbuf *buf = cb_data; |
| 425 | struct object *o = parse_object(sha1); |
| 426 | if (!o) |
| 427 | return 0; |
| 428 | |
| 429 | strbuf_addf(buf, "%s\t%s\n", sha1_to_hex(sha1), name); |
| 430 | if (o->type == OBJ_TAG) { |
| 431 | o = deref_tag(o, name, 0); |
| 432 | if (!o) |
| 433 | return 0; |
| 434 | strbuf_addf(buf, "%s\t%s^{}\n", sha1_to_hex(o->sha1), name); |
| 435 | } |
| 436 | return 0; |
| 437 | } |
| 438 | |
| 439 | static void get_info_refs(char *arg) |
| 440 | { |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 441 | const char *service_name = get_parameter("service"); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 442 | struct strbuf buf = STRBUF_INIT; |
| 443 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 444 | hdr_nocache(); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 445 | |
| 446 | if (service_name) { |
| 447 | const char *argv[] = {NULL /* service name */, |
| 448 | "--stateless-rpc", "--advertise-refs", |
| 449 | ".", NULL}; |
| 450 | struct rpc_service *svc = select_service(service_name); |
| 451 | |
| 452 | strbuf_addf(&buf, "application/x-git-%s-advertisement", |
| 453 | svc->name); |
| 454 | hdr_str(content_type, buf.buf); |
| 455 | end_headers(); |
| 456 | |
| 457 | packet_write(1, "# service=git-%s\n", svc->name); |
| 458 | packet_flush(1); |
| 459 | |
| 460 | argv[0] = svc->name; |
| 461 | run_service(argv); |
| 462 | |
| 463 | } else { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 464 | select_getanyfile(); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 465 | for_each_ref(show_text_ref, &buf); |
| 466 | send_strbuf("text/plain", &buf); |
| 467 | } |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 468 | strbuf_release(&buf); |
| 469 | } |
| 470 | |
| 471 | static void get_info_packs(char *arg) |
| 472 | { |
| 473 | size_t objdirlen = strlen(get_object_directory()); |
| 474 | struct strbuf buf = STRBUF_INIT; |
| 475 | struct packed_git *p; |
| 476 | size_t cnt = 0; |
| 477 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 478 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 479 | prepare_packed_git(); |
| 480 | for (p = packed_git; p; p = p->next) { |
| 481 | if (p->pack_local) |
| 482 | cnt++; |
| 483 | } |
| 484 | |
| 485 | strbuf_grow(&buf, cnt * 53 + 2); |
| 486 | for (p = packed_git; p; p = p->next) { |
| 487 | if (p->pack_local) |
| 488 | strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6); |
| 489 | } |
| 490 | strbuf_addch(&buf, '\n'); |
| 491 | |
| 492 | hdr_nocache(); |
| 493 | send_strbuf("text/plain; charset=utf-8", &buf); |
| 494 | strbuf_release(&buf); |
| 495 | } |
| 496 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 497 | static void check_content_type(const char *accepted_type) |
| 498 | { |
| 499 | const char *actual_type = getenv("CONTENT_TYPE"); |
| 500 | |
| 501 | if (!actual_type) |
| 502 | actual_type = ""; |
| 503 | |
| 504 | if (strcmp(actual_type, accepted_type)) { |
| 505 | http_status(415, "Unsupported Media Type"); |
| 506 | hdr_nocache(); |
| 507 | end_headers(); |
| 508 | format_write(1, |
| 509 | "Expected POST with Content-Type '%s'," |
| 510 | " but received '%s' instead.\n", |
| 511 | accepted_type, actual_type); |
| 512 | exit(0); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | static void service_rpc(char *service_name) |
| 517 | { |
| 518 | const char *argv[] = {NULL, "--stateless-rpc", ".", NULL}; |
| 519 | struct rpc_service *svc = select_service(service_name); |
| 520 | struct strbuf buf = STRBUF_INIT; |
| 521 | |
| 522 | strbuf_reset(&buf); |
| 523 | strbuf_addf(&buf, "application/x-git-%s-request", svc->name); |
| 524 | check_content_type(buf.buf); |
| 525 | |
| 526 | hdr_nocache(); |
| 527 | |
| 528 | strbuf_reset(&buf); |
| 529 | strbuf_addf(&buf, "application/x-git-%s-result", svc->name); |
| 530 | hdr_str(content_type, buf.buf); |
| 531 | |
| 532 | end_headers(); |
| 533 | |
| 534 | argv[0] = svc->name; |
| 535 | run_service(argv); |
| 536 | strbuf_release(&buf); |
| 537 | } |
| 538 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 539 | static NORETURN void die_webcgi(const char *err, va_list params) |
| 540 | { |
| 541 | char buffer[1000]; |
| 542 | |
| 543 | http_status(500, "Internal Server Error"); |
| 544 | hdr_nocache(); |
| 545 | end_headers(); |
| 546 | |
| 547 | vsnprintf(buffer, sizeof(buffer), err, params); |
| 548 | fprintf(stderr, "fatal: %s\n", buffer); |
| 549 | exit(0); |
| 550 | } |
| 551 | |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 552 | static char* getdir(void) |
| 553 | { |
| 554 | struct strbuf buf = STRBUF_INIT; |
| 555 | char *pathinfo = getenv("PATH_INFO"); |
| 556 | char *root = getenv("GIT_PROJECT_ROOT"); |
| 557 | char *path = getenv("PATH_TRANSLATED"); |
| 558 | |
| 559 | if (root && *root) { |
| 560 | if (!pathinfo || !*pathinfo) |
| 561 | die("GIT_PROJECT_ROOT is set but PATH_INFO is not"); |
Shawn O. Pearce | 34b6cb8 | 2009-11-09 11:26:43 -0800 | [diff] [blame] | 562 | if (daemon_avoid_alias(pathinfo)) |
| 563 | die("'%s': aliased", pathinfo); |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 564 | strbuf_addstr(&buf, root); |
Shawn O. Pearce | 34b6cb8 | 2009-11-09 11:26:43 -0800 | [diff] [blame] | 565 | if (buf.buf[buf.len - 1] != '/') |
| 566 | strbuf_addch(&buf, '/'); |
| 567 | if (pathinfo[0] == '/') |
| 568 | pathinfo++; |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 569 | strbuf_addstr(&buf, pathinfo); |
| 570 | return strbuf_detach(&buf, NULL); |
| 571 | } else if (path && *path) { |
| 572 | return xstrdup(path); |
| 573 | } else |
| 574 | die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server"); |
| 575 | return NULL; |
| 576 | } |
| 577 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 578 | static struct service_cmd { |
| 579 | const char *method; |
| 580 | const char *pattern; |
| 581 | void (*imp)(char *); |
| 582 | } services[] = { |
| 583 | {"GET", "/HEAD$", get_text_file}, |
| 584 | {"GET", "/info/refs$", get_info_refs}, |
| 585 | {"GET", "/objects/info/alternates$", get_text_file}, |
| 586 | {"GET", "/objects/info/http-alternates$", get_text_file}, |
| 587 | {"GET", "/objects/info/packs$", get_info_packs}, |
| 588 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object}, |
| 589 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file}, |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 590 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file}, |
| 591 | |
| 592 | {"POST", "/git-upload-pack$", service_rpc}, |
| 593 | {"POST", "/git-receive-pack$", service_rpc} |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 594 | }; |
| 595 | |
| 596 | int main(int argc, char **argv) |
| 597 | { |
| 598 | char *method = getenv("REQUEST_METHOD"); |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 599 | char *dir; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 600 | struct service_cmd *cmd = NULL; |
| 601 | char *cmd_arg = NULL; |
| 602 | int i; |
| 603 | |
| 604 | git_extract_argv0_path(argv[0]); |
| 605 | set_die_routine(die_webcgi); |
| 606 | |
| 607 | if (!method) |
| 608 | die("No REQUEST_METHOD from server"); |
| 609 | if (!strcmp(method, "HEAD")) |
| 610 | method = "GET"; |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 611 | dir = getdir(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 612 | |
| 613 | for (i = 0; i < ARRAY_SIZE(services); i++) { |
| 614 | struct service_cmd *c = &services[i]; |
| 615 | regex_t re; |
| 616 | regmatch_t out[1]; |
| 617 | |
| 618 | if (regcomp(&re, c->pattern, REG_EXTENDED)) |
| 619 | die("Bogus regex in service table: %s", c->pattern); |
| 620 | if (!regexec(&re, dir, 1, out, 0)) { |
Tarmigan Casebolt | 48aec1b | 2009-11-14 13:10:57 -0800 | [diff] [blame] | 621 | size_t n; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 622 | |
| 623 | if (strcmp(method, c->method)) { |
| 624 | const char *proto = getenv("SERVER_PROTOCOL"); |
| 625 | if (proto && !strcmp(proto, "HTTP/1.1")) |
| 626 | http_status(405, "Method Not Allowed"); |
| 627 | else |
| 628 | http_status(400, "Bad Request"); |
| 629 | hdr_nocache(); |
| 630 | end_headers(); |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | cmd = c; |
Tarmigan Casebolt | 48aec1b | 2009-11-14 13:10:57 -0800 | [diff] [blame] | 635 | n = out[0].rm_eo - out[0].rm_so; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 636 | cmd_arg = xmalloc(n); |
Tarmigan Casebolt | 48aec1b | 2009-11-14 13:10:57 -0800 | [diff] [blame] | 637 | memcpy(cmd_arg, dir + out[0].rm_so + 1, n-1); |
| 638 | cmd_arg[n-1] = '\0'; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 639 | dir[out[0].rm_so] = 0; |
| 640 | break; |
| 641 | } |
| 642 | regfree(&re); |
| 643 | } |
| 644 | |
| 645 | if (!cmd) |
| 646 | not_found("Request not supported: '%s'", dir); |
| 647 | |
| 648 | setup_path(); |
| 649 | if (!enter_repo(dir, 0)) |
| 650 | not_found("Not a git repository: '%s'", dir); |
Tarmigan Casebolt | 8b2bd7c | 2009-12-28 16:49:00 -0500 | [diff] [blame] | 651 | if (!getenv("GIT_HTTP_EXPORT_ALL") && |
| 652 | access("git-daemon-export-ok", F_OK) ) |
| 653 | not_found("Repository not exported: '%s'", dir); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 654 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 655 | git_config(http_config, NULL); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 656 | cmd->imp(cmd_arg); |
| 657 | return 0; |
| 658 | } |