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" |
Jeff King | 638794c | 2010-05-23 05:17:55 -0400 | [diff] [blame] | 9 | #include "url.h" |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 10 | |
| 11 | static const char content_type[] = "Content-Type"; |
| 12 | static const char content_length[] = "Content-Length"; |
| 13 | static const char last_modified[] = "Last-Modified"; |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 14 | static int getanyfile = 1; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 15 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 16 | static struct string_list *query_params; |
| 17 | |
| 18 | struct rpc_service { |
| 19 | const char *name; |
| 20 | const char *config_name; |
| 21 | signed enabled : 2; |
| 22 | }; |
| 23 | |
| 24 | static struct rpc_service rpc_service[] = { |
| 25 | { "upload-pack", "uploadpack", 1 }, |
| 26 | { "receive-pack", "receivepack", -1 }, |
| 27 | }; |
| 28 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 29 | static struct string_list *get_parameters(void) |
| 30 | { |
| 31 | if (!query_params) { |
| 32 | const char *query = getenv("QUERY_STRING"); |
| 33 | |
| 34 | query_params = xcalloc(1, sizeof(*query_params)); |
| 35 | while (query && *query) { |
Jeff King | 638794c | 2010-05-23 05:17:55 -0400 | [diff] [blame] | 36 | char *name = url_decode_parameter_name(&query); |
| 37 | char *value = url_decode_parameter_value(&query); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 38 | struct string_list_item *i; |
| 39 | |
Julian Phillips | e8c8b71 | 2010-06-26 00:41:37 +0100 | [diff] [blame] | 40 | i = string_list_lookup(query_params, name); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 41 | if (!i) |
Julian Phillips | 78a395d | 2010-06-26 00:41:35 +0100 | [diff] [blame] | 42 | i = string_list_insert(query_params, name); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 43 | else |
| 44 | free(i->util); |
| 45 | i->util = value; |
| 46 | } |
| 47 | } |
| 48 | return query_params; |
| 49 | } |
| 50 | |
| 51 | static const char *get_parameter(const char *name) |
| 52 | { |
| 53 | struct string_list_item *i; |
Julian Phillips | e8c8b71 | 2010-06-26 00:41:37 +0100 | [diff] [blame] | 54 | i = string_list_lookup(get_parameters(), name); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 55 | return i ? i->util : NULL; |
| 56 | } |
| 57 | |
Tarmigan Casebolt | 3548701 | 2009-11-14 13:10:58 -0800 | [diff] [blame] | 58 | __attribute__((format (printf, 2, 3))) |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 59 | static void format_write(int fd, const char *fmt, ...) |
| 60 | { |
| 61 | static char buffer[1024]; |
| 62 | |
| 63 | va_list args; |
| 64 | unsigned n; |
| 65 | |
| 66 | va_start(args, fmt); |
| 67 | n = vsnprintf(buffer, sizeof(buffer), fmt, args); |
| 68 | va_end(args); |
| 69 | if (n >= sizeof(buffer)) |
| 70 | die("protocol error: impossibly long line"); |
| 71 | |
| 72 | safe_write(fd, buffer, n); |
| 73 | } |
| 74 | |
| 75 | static void http_status(unsigned code, const char *msg) |
| 76 | { |
| 77 | format_write(1, "Status: %u %s\r\n", code, msg); |
| 78 | } |
| 79 | |
| 80 | static void hdr_str(const char *name, const char *value) |
| 81 | { |
| 82 | format_write(1, "%s: %s\r\n", name, value); |
| 83 | } |
| 84 | |
Shawn O. Pearce | 4a5328d | 2009-11-11 20:42:41 -0800 | [diff] [blame] | 85 | static void hdr_int(const char *name, uintmax_t value) |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 86 | { |
| 87 | format_write(1, "%s: %" PRIuMAX "\r\n", name, value); |
| 88 | } |
| 89 | |
| 90 | static void hdr_date(const char *name, unsigned long when) |
| 91 | { |
| 92 | const char *value = show_date(when, 0, DATE_RFC2822); |
| 93 | hdr_str(name, value); |
| 94 | } |
| 95 | |
| 96 | static void hdr_nocache(void) |
| 97 | { |
| 98 | hdr_str("Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); |
| 99 | hdr_str("Pragma", "no-cache"); |
| 100 | hdr_str("Cache-Control", "no-cache, max-age=0, must-revalidate"); |
| 101 | } |
| 102 | |
| 103 | static void hdr_cache_forever(void) |
| 104 | { |
| 105 | unsigned long now = time(NULL); |
| 106 | hdr_date("Date", now); |
| 107 | hdr_date("Expires", now + 31536000); |
| 108 | hdr_str("Cache-Control", "public, max-age=31536000"); |
| 109 | } |
| 110 | |
| 111 | static void end_headers(void) |
| 112 | { |
| 113 | safe_write(1, "\r\n", 2); |
| 114 | } |
| 115 | |
Tarmigan Casebolt | 3548701 | 2009-11-14 13:10:58 -0800 | [diff] [blame] | 116 | __attribute__((format (printf, 1, 2))) |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 117 | static NORETURN void not_found(const char *err, ...) |
| 118 | { |
| 119 | va_list params; |
| 120 | |
| 121 | http_status(404, "Not Found"); |
| 122 | hdr_nocache(); |
| 123 | end_headers(); |
| 124 | |
| 125 | va_start(params, err); |
| 126 | if (err && *err) |
| 127 | vfprintf(stderr, err, params); |
| 128 | va_end(params); |
| 129 | exit(0); |
| 130 | } |
| 131 | |
Tarmigan Casebolt | 3548701 | 2009-11-14 13:10:58 -0800 | [diff] [blame] | 132 | __attribute__((format (printf, 1, 2))) |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 133 | static NORETURN void forbidden(const char *err, ...) |
| 134 | { |
| 135 | va_list params; |
| 136 | |
| 137 | http_status(403, "Forbidden"); |
| 138 | hdr_nocache(); |
| 139 | end_headers(); |
| 140 | |
| 141 | va_start(params, err); |
| 142 | if (err && *err) |
| 143 | vfprintf(stderr, err, params); |
| 144 | va_end(params); |
| 145 | exit(0); |
| 146 | } |
| 147 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 148 | static void select_getanyfile(void) |
| 149 | { |
| 150 | if (!getanyfile) |
| 151 | forbidden("Unsupported service: getanyfile"); |
| 152 | } |
| 153 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 154 | static void send_strbuf(const char *type, struct strbuf *buf) |
| 155 | { |
| 156 | hdr_int(content_length, buf->len); |
| 157 | hdr_str(content_type, type); |
| 158 | end_headers(); |
| 159 | safe_write(1, buf->buf, buf->len); |
| 160 | } |
| 161 | |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 162 | 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] | 163 | { |
| 164 | const char *p = git_path("%s", name); |
| 165 | size_t buf_alloc = 8192; |
| 166 | char *buf = xmalloc(buf_alloc); |
| 167 | int fd; |
| 168 | struct stat sb; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 169 | |
| 170 | fd = open(p, O_RDONLY); |
| 171 | if (fd < 0) |
| 172 | not_found("Cannot open '%s': %s", p, strerror(errno)); |
| 173 | if (fstat(fd, &sb) < 0) |
| 174 | die_errno("Cannot stat '%s'", p); |
| 175 | |
Shawn O. Pearce | 4a5328d | 2009-11-11 20:42:41 -0800 | [diff] [blame] | 176 | hdr_int(content_length, sb.st_size); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 177 | hdr_str(content_type, the_type); |
| 178 | hdr_date(last_modified, sb.st_mtime); |
| 179 | end_headers(); |
| 180 | |
Shawn O. Pearce | 4a5328d | 2009-11-11 20:42:41 -0800 | [diff] [blame] | 181 | for (;;) { |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 182 | ssize_t n = xread(fd, buf, buf_alloc); |
| 183 | if (n < 0) |
| 184 | die_errno("Cannot read '%s'", p); |
| 185 | if (!n) |
| 186 | break; |
| 187 | safe_write(1, buf, n); |
| 188 | } |
| 189 | close(fd); |
| 190 | free(buf); |
| 191 | } |
| 192 | |
| 193 | static void get_text_file(char *name) |
| 194 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 195 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 196 | hdr_nocache(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 197 | send_local_file("text/plain", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | static void get_loose_object(char *name) |
| 201 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 202 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 203 | hdr_cache_forever(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 204 | send_local_file("application/x-git-loose-object", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | static void get_pack_file(char *name) |
| 208 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 209 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 210 | hdr_cache_forever(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 211 | send_local_file("application/x-git-packed-objects", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | static void get_idx_file(char *name) |
| 215 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 216 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 217 | hdr_cache_forever(); |
Shawn O. Pearce | 92815b3 | 2009-11-09 07:24:33 -0800 | [diff] [blame] | 218 | send_local_file("application/x-git-packed-objects-toc", name); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 219 | } |
| 220 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 221 | static int http_config(const char *var, const char *value, void *cb) |
| 222 | { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 223 | if (!strcmp(var, "http.getanyfile")) { |
| 224 | getanyfile = git_config_bool(var, value); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 225 | return 0; |
| 226 | } |
| 227 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 228 | if (!prefixcmp(var, "http.")) { |
| 229 | int i; |
| 230 | |
| 231 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
| 232 | struct rpc_service *svc = &rpc_service[i]; |
| 233 | if (!strcmp(var + 5, svc->config_name)) { |
| 234 | svc->enabled = git_config_bool(var, value); |
| 235 | return 0; |
| 236 | } |
| 237 | } |
| 238 | } |
| 239 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 240 | /* we are not interested in parsing any other configuration here */ |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | static struct rpc_service *select_service(const char *name) |
| 245 | { |
| 246 | struct rpc_service *svc = NULL; |
| 247 | int i; |
| 248 | |
| 249 | if (prefixcmp(name, "git-")) |
| 250 | forbidden("Unsupported service: '%s'", name); |
| 251 | |
| 252 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
| 253 | struct rpc_service *s = &rpc_service[i]; |
| 254 | if (!strcmp(s->name, name + 4)) { |
| 255 | svc = s; |
| 256 | break; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | if (!svc) |
| 261 | forbidden("Unsupported service: '%s'", name); |
| 262 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 263 | if (svc->enabled < 0) { |
| 264 | const char *user = getenv("REMOTE_USER"); |
| 265 | svc->enabled = (user && *user) ? 1 : 0; |
| 266 | } |
| 267 | if (!svc->enabled) |
| 268 | forbidden("Service not enabled: '%s'", svc->name); |
| 269 | return svc; |
| 270 | } |
| 271 | |
| 272 | static void inflate_request(const char *prog_name, int out) |
| 273 | { |
| 274 | z_stream stream; |
| 275 | unsigned char in_buf[8192]; |
| 276 | unsigned char out_buf[8192]; |
| 277 | unsigned long cnt = 0; |
| 278 | int ret; |
| 279 | |
| 280 | memset(&stream, 0, sizeof(stream)); |
| 281 | ret = inflateInit2(&stream, (15 + 16)); |
| 282 | if (ret != Z_OK) |
| 283 | die("cannot start zlib inflater, zlib err %d", ret); |
| 284 | |
| 285 | while (1) { |
| 286 | ssize_t n = xread(0, in_buf, sizeof(in_buf)); |
| 287 | if (n <= 0) |
| 288 | die("request ended in the middle of the gzip stream"); |
| 289 | |
| 290 | stream.next_in = in_buf; |
| 291 | stream.avail_in = n; |
| 292 | |
| 293 | while (0 < stream.avail_in) { |
| 294 | int ret; |
| 295 | |
| 296 | stream.next_out = out_buf; |
| 297 | stream.avail_out = sizeof(out_buf); |
| 298 | |
| 299 | ret = inflate(&stream, Z_NO_FLUSH); |
| 300 | if (ret != Z_OK && ret != Z_STREAM_END) |
| 301 | die("zlib error inflating request, result %d", ret); |
| 302 | |
| 303 | n = stream.total_out - cnt; |
| 304 | if (write_in_full(out, out_buf, n) != n) |
| 305 | die("%s aborted reading request", prog_name); |
| 306 | cnt += n; |
| 307 | |
| 308 | if (ret == Z_STREAM_END) |
| 309 | goto done; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | done: |
| 314 | inflateEnd(&stream); |
| 315 | close(out); |
| 316 | } |
| 317 | |
| 318 | static void run_service(const char **argv) |
| 319 | { |
| 320 | const char *encoding = getenv("HTTP_CONTENT_ENCODING"); |
| 321 | const char *user = getenv("REMOTE_USER"); |
| 322 | const char *host = getenv("REMOTE_ADDR"); |
| 323 | char *env[3]; |
| 324 | struct strbuf buf = STRBUF_INIT; |
| 325 | int gzipped_request = 0; |
| 326 | struct child_process cld; |
| 327 | |
| 328 | if (encoding && !strcmp(encoding, "gzip")) |
| 329 | gzipped_request = 1; |
| 330 | else if (encoding && !strcmp(encoding, "x-gzip")) |
| 331 | gzipped_request = 1; |
| 332 | |
| 333 | if (!user || !*user) |
| 334 | user = "anonymous"; |
| 335 | if (!host || !*host) |
| 336 | host = "(none)"; |
| 337 | |
| 338 | memset(&env, 0, sizeof(env)); |
| 339 | strbuf_addf(&buf, "GIT_COMMITTER_NAME=%s", user); |
| 340 | env[0] = strbuf_detach(&buf, NULL); |
| 341 | |
| 342 | strbuf_addf(&buf, "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); |
| 343 | env[1] = strbuf_detach(&buf, NULL); |
| 344 | env[2] = NULL; |
| 345 | |
| 346 | memset(&cld, 0, sizeof(cld)); |
| 347 | cld.argv = argv; |
| 348 | cld.env = (const char *const *)env; |
| 349 | if (gzipped_request) |
| 350 | cld.in = -1; |
| 351 | cld.git_cmd = 1; |
| 352 | if (start_command(&cld)) |
| 353 | exit(1); |
| 354 | |
| 355 | close(1); |
| 356 | if (gzipped_request) |
| 357 | inflate_request(argv[0], cld.in); |
| 358 | else |
| 359 | close(0); |
| 360 | |
| 361 | if (finish_command(&cld)) |
| 362 | exit(1); |
| 363 | free(env[0]); |
| 364 | free(env[1]); |
| 365 | strbuf_release(&buf); |
| 366 | } |
| 367 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 368 | static int show_text_ref(const char *name, const unsigned char *sha1, |
| 369 | int flag, void *cb_data) |
| 370 | { |
| 371 | struct strbuf *buf = cb_data; |
| 372 | struct object *o = parse_object(sha1); |
| 373 | if (!o) |
| 374 | return 0; |
| 375 | |
| 376 | strbuf_addf(buf, "%s\t%s\n", sha1_to_hex(sha1), name); |
| 377 | if (o->type == OBJ_TAG) { |
| 378 | o = deref_tag(o, name, 0); |
| 379 | if (!o) |
| 380 | return 0; |
| 381 | strbuf_addf(buf, "%s\t%s^{}\n", sha1_to_hex(o->sha1), name); |
| 382 | } |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | static void get_info_refs(char *arg) |
| 387 | { |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 388 | const char *service_name = get_parameter("service"); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 389 | struct strbuf buf = STRBUF_INIT; |
| 390 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 391 | hdr_nocache(); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 392 | |
| 393 | if (service_name) { |
| 394 | const char *argv[] = {NULL /* service name */, |
| 395 | "--stateless-rpc", "--advertise-refs", |
| 396 | ".", NULL}; |
| 397 | struct rpc_service *svc = select_service(service_name); |
| 398 | |
| 399 | strbuf_addf(&buf, "application/x-git-%s-advertisement", |
| 400 | svc->name); |
| 401 | hdr_str(content_type, buf.buf); |
| 402 | end_headers(); |
| 403 | |
| 404 | packet_write(1, "# service=git-%s\n", svc->name); |
| 405 | packet_flush(1); |
| 406 | |
| 407 | argv[0] = svc->name; |
| 408 | run_service(argv); |
| 409 | |
| 410 | } else { |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 411 | select_getanyfile(); |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 412 | for_each_ref(show_text_ref, &buf); |
| 413 | send_strbuf("text/plain", &buf); |
| 414 | } |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 415 | strbuf_release(&buf); |
| 416 | } |
| 417 | |
| 418 | static void get_info_packs(char *arg) |
| 419 | { |
| 420 | size_t objdirlen = strlen(get_object_directory()); |
| 421 | struct strbuf buf = STRBUF_INIT; |
| 422 | struct packed_git *p; |
| 423 | size_t cnt = 0; |
| 424 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 425 | select_getanyfile(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 426 | prepare_packed_git(); |
| 427 | for (p = packed_git; p; p = p->next) { |
| 428 | if (p->pack_local) |
| 429 | cnt++; |
| 430 | } |
| 431 | |
| 432 | strbuf_grow(&buf, cnt * 53 + 2); |
| 433 | for (p = packed_git; p; p = p->next) { |
| 434 | if (p->pack_local) |
| 435 | strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6); |
| 436 | } |
| 437 | strbuf_addch(&buf, '\n'); |
| 438 | |
| 439 | hdr_nocache(); |
| 440 | send_strbuf("text/plain; charset=utf-8", &buf); |
| 441 | strbuf_release(&buf); |
| 442 | } |
| 443 | |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 444 | static void check_content_type(const char *accepted_type) |
| 445 | { |
| 446 | const char *actual_type = getenv("CONTENT_TYPE"); |
| 447 | |
| 448 | if (!actual_type) |
| 449 | actual_type = ""; |
| 450 | |
| 451 | if (strcmp(actual_type, accepted_type)) { |
| 452 | http_status(415, "Unsupported Media Type"); |
| 453 | hdr_nocache(); |
| 454 | end_headers(); |
| 455 | format_write(1, |
| 456 | "Expected POST with Content-Type '%s'," |
| 457 | " but received '%s' instead.\n", |
| 458 | accepted_type, actual_type); |
| 459 | exit(0); |
| 460 | } |
| 461 | } |
| 462 | |
| 463 | static void service_rpc(char *service_name) |
| 464 | { |
| 465 | const char *argv[] = {NULL, "--stateless-rpc", ".", NULL}; |
| 466 | struct rpc_service *svc = select_service(service_name); |
| 467 | struct strbuf buf = STRBUF_INIT; |
| 468 | |
| 469 | strbuf_reset(&buf); |
| 470 | strbuf_addf(&buf, "application/x-git-%s-request", svc->name); |
| 471 | check_content_type(buf.buf); |
| 472 | |
| 473 | hdr_nocache(); |
| 474 | |
| 475 | strbuf_reset(&buf); |
| 476 | strbuf_addf(&buf, "application/x-git-%s-result", svc->name); |
| 477 | hdr_str(content_type, buf.buf); |
| 478 | |
| 479 | end_headers(); |
| 480 | |
| 481 | argv[0] = svc->name; |
| 482 | run_service(argv); |
| 483 | strbuf_release(&buf); |
| 484 | } |
| 485 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 486 | static NORETURN void die_webcgi(const char *err, va_list params) |
| 487 | { |
Shawn O. Pearce | 5856b5f | 2010-03-22 07:22:04 -0700 | [diff] [blame] | 488 | static int dead; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 489 | |
Shawn O. Pearce | 5856b5f | 2010-03-22 07:22:04 -0700 | [diff] [blame] | 490 | if (!dead) { |
Shawn O. Pearce | 5856b5f | 2010-03-22 07:22:04 -0700 | [diff] [blame] | 491 | dead = 1; |
Shawn O. Pearce | 5856b5f | 2010-03-22 07:22:04 -0700 | [diff] [blame] | 492 | http_status(500, "Internal Server Error"); |
| 493 | hdr_nocache(); |
| 494 | end_headers(); |
Junio C Hamano | 7626550 | 2010-06-21 06:02:45 -0700 | [diff] [blame] | 495 | |
| 496 | vreportf("fatal: ", err, params); |
Shawn O. Pearce | 5856b5f | 2010-03-22 07:22:04 -0700 | [diff] [blame] | 497 | } |
| 498 | exit(0); /* we successfully reported a failure ;-) */ |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 499 | } |
| 500 | |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 501 | static char* getdir(void) |
| 502 | { |
| 503 | struct strbuf buf = STRBUF_INIT; |
| 504 | char *pathinfo = getenv("PATH_INFO"); |
| 505 | char *root = getenv("GIT_PROJECT_ROOT"); |
| 506 | char *path = getenv("PATH_TRANSLATED"); |
| 507 | |
| 508 | if (root && *root) { |
| 509 | if (!pathinfo || !*pathinfo) |
| 510 | die("GIT_PROJECT_ROOT is set but PATH_INFO is not"); |
Shawn O. Pearce | 34b6cb8 | 2009-11-09 11:26:43 -0800 | [diff] [blame] | 511 | if (daemon_avoid_alias(pathinfo)) |
| 512 | die("'%s': aliased", pathinfo); |
Tay Ray Chuan | cf688cc | 2010-11-25 16:21:06 +0800 | [diff] [blame] | 513 | end_url_with_slash(&buf, root); |
Shawn O. Pearce | 34b6cb8 | 2009-11-09 11:26:43 -0800 | [diff] [blame] | 514 | if (pathinfo[0] == '/') |
| 515 | pathinfo++; |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 516 | strbuf_addstr(&buf, pathinfo); |
| 517 | return strbuf_detach(&buf, NULL); |
| 518 | } else if (path && *path) { |
| 519 | return xstrdup(path); |
| 520 | } else |
| 521 | die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server"); |
| 522 | return NULL; |
| 523 | } |
| 524 | |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 525 | static struct service_cmd { |
| 526 | const char *method; |
| 527 | const char *pattern; |
| 528 | void (*imp)(char *); |
| 529 | } services[] = { |
| 530 | {"GET", "/HEAD$", get_text_file}, |
| 531 | {"GET", "/info/refs$", get_info_refs}, |
| 532 | {"GET", "/objects/info/alternates$", get_text_file}, |
| 533 | {"GET", "/objects/info/http-alternates$", get_text_file}, |
| 534 | {"GET", "/objects/info/packs$", get_info_packs}, |
| 535 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object}, |
| 536 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file}, |
Shawn O. Pearce | 556cfa3 | 2009-10-30 17:47:34 -0700 | [diff] [blame] | 537 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file}, |
| 538 | |
| 539 | {"POST", "/git-upload-pack$", service_rpc}, |
| 540 | {"POST", "/git-receive-pack$", service_rpc} |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 541 | }; |
| 542 | |
| 543 | int main(int argc, char **argv) |
| 544 | { |
| 545 | char *method = getenv("REQUEST_METHOD"); |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 546 | char *dir; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 547 | struct service_cmd *cmd = NULL; |
| 548 | char *cmd_arg = NULL; |
| 549 | int i; |
| 550 | |
| 551 | git_extract_argv0_path(argv[0]); |
| 552 | set_die_routine(die_webcgi); |
| 553 | |
| 554 | if (!method) |
| 555 | die("No REQUEST_METHOD from server"); |
| 556 | if (!strcmp(method, "HEAD")) |
| 557 | method = "GET"; |
Mark Lodato | 917adc0 | 2009-10-30 17:47:35 -0700 | [diff] [blame] | 558 | dir = getdir(); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 559 | |
| 560 | for (i = 0; i < ARRAY_SIZE(services); i++) { |
| 561 | struct service_cmd *c = &services[i]; |
| 562 | regex_t re; |
| 563 | regmatch_t out[1]; |
| 564 | |
| 565 | if (regcomp(&re, c->pattern, REG_EXTENDED)) |
| 566 | die("Bogus regex in service table: %s", c->pattern); |
| 567 | if (!regexec(&re, dir, 1, out, 0)) { |
Tarmigan Casebolt | 48aec1b | 2009-11-14 13:10:57 -0800 | [diff] [blame] | 568 | size_t n; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 569 | |
| 570 | if (strcmp(method, c->method)) { |
| 571 | const char *proto = getenv("SERVER_PROTOCOL"); |
| 572 | if (proto && !strcmp(proto, "HTTP/1.1")) |
| 573 | http_status(405, "Method Not Allowed"); |
| 574 | else |
| 575 | http_status(400, "Bad Request"); |
| 576 | hdr_nocache(); |
| 577 | end_headers(); |
| 578 | return 0; |
| 579 | } |
| 580 | |
| 581 | cmd = c; |
Tarmigan Casebolt | 48aec1b | 2009-11-14 13:10:57 -0800 | [diff] [blame] | 582 | n = out[0].rm_eo - out[0].rm_so; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 583 | cmd_arg = xmalloc(n); |
Tarmigan Casebolt | 48aec1b | 2009-11-14 13:10:57 -0800 | [diff] [blame] | 584 | memcpy(cmd_arg, dir + out[0].rm_so + 1, n-1); |
| 585 | cmd_arg[n-1] = '\0'; |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 586 | dir[out[0].rm_so] = 0; |
| 587 | break; |
| 588 | } |
| 589 | regfree(&re); |
| 590 | } |
| 591 | |
| 592 | if (!cmd) |
| 593 | not_found("Request not supported: '%s'", dir); |
| 594 | |
| 595 | setup_path(); |
| 596 | if (!enter_repo(dir, 0)) |
| 597 | not_found("Not a git repository: '%s'", dir); |
Tarmigan Casebolt | 8b2bd7c | 2009-12-28 16:49:00 -0500 | [diff] [blame] | 598 | if (!getenv("GIT_HTTP_EXPORT_ALL") && |
| 599 | access("git-daemon-export-ok", F_OK) ) |
| 600 | not_found("Repository not exported: '%s'", dir); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 601 | |
Shawn O. Pearce | 5abb013 | 2009-11-04 17:16:37 -0800 | [diff] [blame] | 602 | git_config(http_config, NULL); |
Shawn O. Pearce | 2f4038a | 2009-10-30 17:47:32 -0700 | [diff] [blame] | 603 | cmd->imp(cmd_arg); |
| 604 | return 0; |
| 605 | } |