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Commit | Line | Data |
---|---|---|
2f4038ab | 1 | #include "cache.h" |
b2141fc1 | 2 | #include "config.h" |
a80d72db | 3 | #include "repository.h" |
2f4038ab SP |
4 | #include "refs.h" |
5 | #include "pkt-line.h" | |
6 | #include "object.h" | |
7 | #include "tag.h" | |
8 | #include "exec_cmd.h" | |
556cfa3b SP |
9 | #include "run-command.h" |
10 | #include "string-list.h" | |
638794cd | 11 | #include "url.h" |
e32a4581 | 12 | #include "argv-array.h" |
0abe14f6 | 13 | #include "packfile.h" |
a80d72db | 14 | #include "object-store.h" |
2f4038ab SP |
15 | |
16 | static const char content_type[] = "Content-Type"; | |
17 | static const char content_length[] = "Content-Length"; | |
18 | static const char last_modified[] = "Last-Modified"; | |
5abb013b | 19 | static int getanyfile = 1; |
6bc0cb51 | 20 | static unsigned long max_request_buffer = 10 * 1024 * 1024; |
2f4038ab | 21 | |
556cfa3b SP |
22 | static struct string_list *query_params; |
23 | ||
24 | struct rpc_service { | |
25 | const char *name; | |
26 | const char *config_name; | |
6bc0cb51 | 27 | unsigned buffer_input : 1; |
556cfa3b SP |
28 | signed enabled : 2; |
29 | }; | |
30 | ||
31 | static struct rpc_service rpc_service[] = { | |
6bc0cb51 JK |
32 | { "upload-pack", "uploadpack", 1, 1 }, |
33 | { "receive-pack", "receivepack", 0, -1 }, | |
556cfa3b SP |
34 | }; |
35 | ||
556cfa3b SP |
36 | static struct string_list *get_parameters(void) |
37 | { | |
38 | if (!query_params) { | |
39 | const char *query = getenv("QUERY_STRING"); | |
40 | ||
41 | query_params = xcalloc(1, sizeof(*query_params)); | |
42 | while (query && *query) { | |
638794cd JK |
43 | char *name = url_decode_parameter_name(&query); |
44 | char *value = url_decode_parameter_value(&query); | |
556cfa3b SP |
45 | struct string_list_item *i; |
46 | ||
e8c8b713 | 47 | i = string_list_lookup(query_params, name); |
556cfa3b | 48 | if (!i) |
78a395d3 | 49 | i = string_list_insert(query_params, name); |
556cfa3b SP |
50 | else |
51 | free(i->util); | |
52 | i->util = value; | |
53 | } | |
54 | } | |
55 | return query_params; | |
56 | } | |
57 | ||
58 | static const char *get_parameter(const char *name) | |
59 | { | |
60 | struct string_list_item *i; | |
e8c8b713 | 61 | i = string_list_lookup(get_parameters(), name); |
556cfa3b SP |
62 | return i ? i->util : NULL; |
63 | } | |
64 | ||
35487017 | 65 | __attribute__((format (printf, 2, 3))) |
2f4038ab SP |
66 | static void format_write(int fd, const char *fmt, ...) |
67 | { | |
68 | static char buffer[1024]; | |
69 | ||
70 | va_list args; | |
71 | unsigned n; | |
72 | ||
73 | va_start(args, fmt); | |
74 | n = vsnprintf(buffer, sizeof(buffer), fmt, args); | |
75 | va_end(args); | |
76 | if (n >= sizeof(buffer)) | |
77 | die("protocol error: impossibly long line"); | |
78 | ||
cdf4fb8e | 79 | write_or_die(fd, buffer, n); |
2f4038ab SP |
80 | } |
81 | ||
b36045c1 | 82 | static void http_status(struct strbuf *hdr, unsigned code, const char *msg) |
2f4038ab | 83 | { |
b36045c1 | 84 | strbuf_addf(hdr, "Status: %u %s\r\n", code, msg); |
2f4038ab SP |
85 | } |
86 | ||
b36045c1 | 87 | static void hdr_str(struct strbuf *hdr, const char *name, const char *value) |
2f4038ab | 88 | { |
b36045c1 | 89 | strbuf_addf(hdr, "%s: %s\r\n", name, value); |
2f4038ab SP |
90 | } |
91 | ||
b36045c1 | 92 | static void hdr_int(struct strbuf *hdr, const char *name, uintmax_t value) |
2f4038ab | 93 | { |
b36045c1 | 94 | strbuf_addf(hdr, "%s: %" PRIuMAX "\r\n", name, value); |
2f4038ab SP |
95 | } |
96 | ||
dddbad72 | 97 | static void hdr_date(struct strbuf *hdr, const char *name, timestamp_t when) |
2f4038ab | 98 | { |
a5481a6c | 99 | const char *value = show_date(when, 0, DATE_MODE(RFC2822)); |
b36045c1 | 100 | hdr_str(hdr, name, value); |
2f4038ab SP |
101 | } |
102 | ||
b36045c1 | 103 | static void hdr_nocache(struct strbuf *hdr) |
2f4038ab | 104 | { |
b36045c1 EW |
105 | hdr_str(hdr, "Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); |
106 | hdr_str(hdr, "Pragma", "no-cache"); | |
107 | hdr_str(hdr, "Cache-Control", "no-cache, max-age=0, must-revalidate"); | |
2f4038ab SP |
108 | } |
109 | ||
b36045c1 | 110 | static void hdr_cache_forever(struct strbuf *hdr) |
2f4038ab | 111 | { |
dddbad72 | 112 | timestamp_t now = time(NULL); |
b36045c1 EW |
113 | hdr_date(hdr, "Date", now); |
114 | hdr_date(hdr, "Expires", now + 31536000); | |
115 | hdr_str(hdr, "Cache-Control", "public, max-age=31536000"); | |
2f4038ab SP |
116 | } |
117 | ||
b36045c1 | 118 | static void end_headers(struct strbuf *hdr) |
2f4038ab | 119 | { |
b36045c1 EW |
120 | strbuf_add(hdr, "\r\n", 2); |
121 | write_or_die(1, hdr->buf, hdr->len); | |
122 | strbuf_release(hdr); | |
2f4038ab SP |
123 | } |
124 | ||
b36045c1 EW |
125 | __attribute__((format (printf, 2, 3))) |
126 | static NORETURN void not_found(struct strbuf *hdr, const char *err, ...) | |
2f4038ab SP |
127 | { |
128 | va_list params; | |
129 | ||
b36045c1 EW |
130 | http_status(hdr, 404, "Not Found"); |
131 | hdr_nocache(hdr); | |
132 | end_headers(hdr); | |
2f4038ab SP |
133 | |
134 | va_start(params, err); | |
135 | if (err && *err) | |
136 | vfprintf(stderr, err, params); | |
137 | va_end(params); | |
138 | exit(0); | |
139 | } | |
140 | ||
b36045c1 EW |
141 | __attribute__((format (printf, 2, 3))) |
142 | static NORETURN void forbidden(struct strbuf *hdr, const char *err, ...) | |
556cfa3b SP |
143 | { |
144 | va_list params; | |
145 | ||
b36045c1 EW |
146 | http_status(hdr, 403, "Forbidden"); |
147 | hdr_nocache(hdr); | |
148 | end_headers(hdr); | |
556cfa3b SP |
149 | |
150 | va_start(params, err); | |
151 | if (err && *err) | |
152 | vfprintf(stderr, err, params); | |
153 | va_end(params); | |
154 | exit(0); | |
155 | } | |
156 | ||
b36045c1 | 157 | static void select_getanyfile(struct strbuf *hdr) |
5abb013b SP |
158 | { |
159 | if (!getanyfile) | |
b36045c1 | 160 | forbidden(hdr, "Unsupported service: getanyfile"); |
5abb013b SP |
161 | } |
162 | ||
b36045c1 EW |
163 | static void send_strbuf(struct strbuf *hdr, |
164 | const char *type, struct strbuf *buf) | |
2f4038ab | 165 | { |
b36045c1 EW |
166 | hdr_int(hdr, content_length, buf->len); |
167 | hdr_str(hdr, content_type, type); | |
168 | end_headers(hdr); | |
cdf4fb8e | 169 | write_or_die(1, buf->buf, buf->len); |
2f4038ab SP |
170 | } |
171 | ||
b36045c1 EW |
172 | static void send_local_file(struct strbuf *hdr, const char *the_type, |
173 | const char *name) | |
2f4038ab | 174 | { |
fcd12db6 | 175 | char *p = git_pathdup("%s", name); |
2f4038ab SP |
176 | size_t buf_alloc = 8192; |
177 | char *buf = xmalloc(buf_alloc); | |
178 | int fd; | |
179 | struct stat sb; | |
2f4038ab SP |
180 | |
181 | fd = open(p, O_RDONLY); | |
182 | if (fd < 0) | |
b36045c1 | 183 | not_found(hdr, "Cannot open '%s': %s", p, strerror(errno)); |
2f4038ab SP |
184 | if (fstat(fd, &sb) < 0) |
185 | die_errno("Cannot stat '%s'", p); | |
186 | ||
b36045c1 EW |
187 | hdr_int(hdr, content_length, sb.st_size); |
188 | hdr_str(hdr, content_type, the_type); | |
189 | hdr_date(hdr, last_modified, sb.st_mtime); | |
190 | end_headers(hdr); | |
2f4038ab | 191 | |
4a5328d6 | 192 | for (;;) { |
2f4038ab SP |
193 | ssize_t n = xread(fd, buf, buf_alloc); |
194 | if (n < 0) | |
195 | die_errno("Cannot read '%s'", p); | |
196 | if (!n) | |
197 | break; | |
cdf4fb8e | 198 | write_or_die(1, buf, n); |
2f4038ab SP |
199 | } |
200 | close(fd); | |
201 | free(buf); | |
fcd12db6 | 202 | free(p); |
2f4038ab SP |
203 | } |
204 | ||
b36045c1 | 205 | static void get_text_file(struct strbuf *hdr, char *name) |
2f4038ab | 206 | { |
b36045c1 EW |
207 | select_getanyfile(hdr); |
208 | hdr_nocache(hdr); | |
209 | send_local_file(hdr, "text/plain", name); | |
2f4038ab SP |
210 | } |
211 | ||
b36045c1 | 212 | static void get_loose_object(struct strbuf *hdr, char *name) |
2f4038ab | 213 | { |
b36045c1 EW |
214 | select_getanyfile(hdr); |
215 | hdr_cache_forever(hdr); | |
216 | send_local_file(hdr, "application/x-git-loose-object", name); | |
2f4038ab SP |
217 | } |
218 | ||
b36045c1 | 219 | static void get_pack_file(struct strbuf *hdr, char *name) |
2f4038ab | 220 | { |
b36045c1 EW |
221 | select_getanyfile(hdr); |
222 | hdr_cache_forever(hdr); | |
223 | send_local_file(hdr, "application/x-git-packed-objects", name); | |
2f4038ab SP |
224 | } |
225 | ||
b36045c1 | 226 | static void get_idx_file(struct strbuf *hdr, char *name) |
2f4038ab | 227 | { |
b36045c1 EW |
228 | select_getanyfile(hdr); |
229 | hdr_cache_forever(hdr); | |
230 | send_local_file(hdr, "application/x-git-packed-objects-toc", name); | |
2f4038ab SP |
231 | } |
232 | ||
6881f0cc | 233 | static void http_config(void) |
556cfa3b | 234 | { |
6881f0cc TA |
235 | int i, value = 0; |
236 | struct strbuf var = STRBUF_INIT; | |
ae021d87 | 237 | |
6881f0cc | 238 | git_config_get_bool("http.getanyfile", &getanyfile); |
6bc0cb51 | 239 | git_config_get_ulong("http.maxrequestbuffer", &max_request_buffer); |
556cfa3b | 240 | |
6881f0cc TA |
241 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
242 | struct rpc_service *svc = &rpc_service[i]; | |
243 | strbuf_addf(&var, "http.%s", svc->config_name); | |
244 | if (!git_config_get_bool(var.buf, &value)) | |
245 | svc->enabled = value; | |
246 | strbuf_reset(&var); | |
5abb013b SP |
247 | } |
248 | ||
6881f0cc | 249 | strbuf_release(&var); |
556cfa3b SP |
250 | } |
251 | ||
b36045c1 | 252 | static struct rpc_service *select_service(struct strbuf *hdr, const char *name) |
556cfa3b | 253 | { |
ae021d87 | 254 | const char *svc_name; |
556cfa3b SP |
255 | struct rpc_service *svc = NULL; |
256 | int i; | |
257 | ||
ae021d87 | 258 | if (!skip_prefix(name, "git-", &svc_name)) |
b36045c1 | 259 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b SP |
260 | |
261 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { | |
262 | struct rpc_service *s = &rpc_service[i]; | |
ae021d87 | 263 | if (!strcmp(s->name, svc_name)) { |
556cfa3b SP |
264 | svc = s; |
265 | break; | |
266 | } | |
267 | } | |
268 | ||
269 | if (!svc) | |
b36045c1 | 270 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b | 271 | |
556cfa3b SP |
272 | if (svc->enabled < 0) { |
273 | const char *user = getenv("REMOTE_USER"); | |
274 | svc->enabled = (user && *user) ? 1 : 0; | |
275 | } | |
276 | if (!svc->enabled) | |
b36045c1 | 277 | forbidden(hdr, "Service not enabled: '%s'", svc->name); |
556cfa3b SP |
278 | return svc; |
279 | } | |
280 | ||
6bc0cb51 JK |
281 | /* |
282 | * This is basically strbuf_read(), except that if we | |
283 | * hit max_request_buffer we die (we'd rather reject a | |
284 | * maliciously large request than chew up infinite memory). | |
285 | */ | |
286 | static ssize_t read_request(int fd, unsigned char **out) | |
287 | { | |
288 | size_t len = 0, alloc = 8192; | |
289 | unsigned char *buf = xmalloc(alloc); | |
290 | ||
291 | if (max_request_buffer < alloc) | |
292 | max_request_buffer = alloc; | |
293 | ||
294 | while (1) { | |
295 | ssize_t cnt; | |
296 | ||
297 | cnt = read_in_full(fd, buf + len, alloc - len); | |
298 | if (cnt < 0) { | |
299 | free(buf); | |
300 | return -1; | |
301 | } | |
302 | ||
303 | /* partial read from read_in_full means we hit EOF */ | |
304 | len += cnt; | |
305 | if (len < alloc) { | |
306 | *out = buf; | |
307 | return len; | |
308 | } | |
309 | ||
310 | /* otherwise, grow and try again (if we can) */ | |
311 | if (alloc == max_request_buffer) | |
312 | die("request was larger than our maximum size (%lu);" | |
313 | " try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
314 | max_request_buffer); | |
315 | ||
316 | alloc = alloc_nr(alloc); | |
317 | if (alloc > max_request_buffer) | |
318 | alloc = max_request_buffer; | |
319 | REALLOC_ARRAY(buf, alloc); | |
320 | } | |
321 | } | |
322 | ||
323 | static void inflate_request(const char *prog_name, int out, int buffer_input) | |
556cfa3b | 324 | { |
ef49a7a0 | 325 | git_zstream stream; |
6bc0cb51 | 326 | unsigned char *full_request = NULL; |
556cfa3b SP |
327 | unsigned char in_buf[8192]; |
328 | unsigned char out_buf[8192]; | |
329 | unsigned long cnt = 0; | |
556cfa3b SP |
330 | |
331 | memset(&stream, 0, sizeof(stream)); | |
5e86c1fb | 332 | git_inflate_init_gzip_only(&stream); |
556cfa3b SP |
333 | |
334 | while (1) { | |
6bc0cb51 JK |
335 | ssize_t n; |
336 | ||
337 | if (buffer_input) { | |
338 | if (full_request) | |
339 | n = 0; /* nothing left to read */ | |
340 | else | |
341 | n = read_request(0, &full_request); | |
342 | stream.next_in = full_request; | |
343 | } else { | |
344 | n = xread(0, in_buf, sizeof(in_buf)); | |
345 | stream.next_in = in_buf; | |
346 | } | |
347 | ||
556cfa3b SP |
348 | if (n <= 0) |
349 | die("request ended in the middle of the gzip stream"); | |
556cfa3b SP |
350 | stream.avail_in = n; |
351 | ||
352 | while (0 < stream.avail_in) { | |
353 | int ret; | |
354 | ||
355 | stream.next_out = out_buf; | |
356 | stream.avail_out = sizeof(out_buf); | |
357 | ||
9e7e5ca3 | 358 | ret = git_inflate(&stream, Z_NO_FLUSH); |
556cfa3b SP |
359 | if (ret != Z_OK && ret != Z_STREAM_END) |
360 | die("zlib error inflating request, result %d", ret); | |
361 | ||
362 | n = stream.total_out - cnt; | |
06f46f23 | 363 | if (write_in_full(out, out_buf, n) < 0) |
556cfa3b SP |
364 | die("%s aborted reading request", prog_name); |
365 | cnt += n; | |
366 | ||
367 | if (ret == Z_STREAM_END) | |
368 | goto done; | |
369 | } | |
370 | } | |
371 | ||
372 | done: | |
9e7e5ca3 | 373 | git_inflate_end(&stream); |
556cfa3b | 374 | close(out); |
6bc0cb51 JK |
375 | free(full_request); |
376 | } | |
377 | ||
378 | static void copy_request(const char *prog_name, int out) | |
379 | { | |
380 | unsigned char *buf; | |
381 | ssize_t n = read_request(0, &buf); | |
382 | if (n < 0) | |
383 | die_errno("error reading request body"); | |
06f46f23 | 384 | if (write_in_full(out, buf, n) < 0) |
6bc0cb51 JK |
385 | die("%s aborted reading request", prog_name); |
386 | close(out); | |
387 | free(buf); | |
556cfa3b SP |
388 | } |
389 | ||
6bc0cb51 | 390 | static void run_service(const char **argv, int buffer_input) |
556cfa3b SP |
391 | { |
392 | const char *encoding = getenv("HTTP_CONTENT_ENCODING"); | |
393 | const char *user = getenv("REMOTE_USER"); | |
394 | const char *host = getenv("REMOTE_ADDR"); | |
556cfa3b | 395 | int gzipped_request = 0; |
d3180279 | 396 | struct child_process cld = CHILD_PROCESS_INIT; |
556cfa3b SP |
397 | |
398 | if (encoding && !strcmp(encoding, "gzip")) | |
399 | gzipped_request = 1; | |
400 | else if (encoding && !strcmp(encoding, "x-gzip")) | |
401 | gzipped_request = 1; | |
402 | ||
403 | if (!user || !*user) | |
404 | user = "anonymous"; | |
405 | if (!host || !*host) | |
406 | host = "(none)"; | |
407 | ||
e32a4581 | 408 | if (!getenv("GIT_COMMITTER_NAME")) |
a9154590 | 409 | argv_array_pushf(&cld.env_array, "GIT_COMMITTER_NAME=%s", user); |
e32a4581 | 410 | if (!getenv("GIT_COMMITTER_EMAIL")) |
a9154590 RS |
411 | argv_array_pushf(&cld.env_array, |
412 | "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); | |
556cfa3b | 413 | |
556cfa3b | 414 | cld.argv = argv; |
6bc0cb51 | 415 | if (buffer_input || gzipped_request) |
556cfa3b SP |
416 | cld.in = -1; |
417 | cld.git_cmd = 1; | |
418 | if (start_command(&cld)) | |
419 | exit(1); | |
420 | ||
421 | close(1); | |
422 | if (gzipped_request) | |
6bc0cb51 JK |
423 | inflate_request(argv[0], cld.in, buffer_input); |
424 | else if (buffer_input) | |
425 | copy_request(argv[0], cld.in); | |
556cfa3b SP |
426 | else |
427 | close(0); | |
428 | ||
429 | if (finish_command(&cld)) | |
430 | exit(1); | |
556cfa3b SP |
431 | } |
432 | ||
f72f5421 MH |
433 | static int show_text_ref(const char *name, const struct object_id *oid, |
434 | int flag, void *cb_data) | |
2f4038ab | 435 | { |
6130f86d | 436 | const char *name_nons = strip_namespace(name); |
2f4038ab | 437 | struct strbuf *buf = cb_data; |
c251c83d | 438 | struct object *o = parse_object(oid); |
2f4038ab SP |
439 | if (!o) |
440 | return 0; | |
441 | ||
f72f5421 | 442 | strbuf_addf(buf, "%s\t%s\n", oid_to_hex(oid), name_nons); |
2f4038ab SP |
443 | if (o->type == OBJ_TAG) { |
444 | o = deref_tag(o, name, 0); | |
445 | if (!o) | |
446 | return 0; | |
f2fd0760 | 447 | strbuf_addf(buf, "%s\t%s^{}\n", oid_to_hex(&o->oid), |
6130f86d | 448 | name_nons); |
2f4038ab SP |
449 | } |
450 | return 0; | |
451 | } | |
452 | ||
b36045c1 | 453 | static void get_info_refs(struct strbuf *hdr, char *arg) |
2f4038ab | 454 | { |
556cfa3b | 455 | const char *service_name = get_parameter("service"); |
2f4038ab SP |
456 | struct strbuf buf = STRBUF_INIT; |
457 | ||
b36045c1 | 458 | hdr_nocache(hdr); |
556cfa3b SP |
459 | |
460 | if (service_name) { | |
461 | const char *argv[] = {NULL /* service name */, | |
462 | "--stateless-rpc", "--advertise-refs", | |
463 | ".", NULL}; | |
b36045c1 | 464 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
465 | |
466 | strbuf_addf(&buf, "application/x-git-%s-advertisement", | |
467 | svc->name); | |
b36045c1 EW |
468 | hdr_str(hdr, content_type, buf.buf); |
469 | end_headers(hdr); | |
556cfa3b | 470 | |
81c634e9 | 471 | packet_write_fmt(1, "# service=git-%s\n", svc->name); |
556cfa3b SP |
472 | packet_flush(1); |
473 | ||
474 | argv[0] = svc->name; | |
6bc0cb51 | 475 | run_service(argv, 0); |
556cfa3b SP |
476 | |
477 | } else { | |
b36045c1 | 478 | select_getanyfile(hdr); |
6130f86d | 479 | for_each_namespaced_ref(show_text_ref, &buf); |
b36045c1 | 480 | send_strbuf(hdr, "text/plain", &buf); |
556cfa3b | 481 | } |
2f4038ab SP |
482 | strbuf_release(&buf); |
483 | } | |
484 | ||
f72f5421 MH |
485 | static int show_head_ref(const char *refname, const struct object_id *oid, |
486 | int flag, void *cb_data) | |
6130f86d JK |
487 | { |
488 | struct strbuf *buf = cb_data; | |
489 | ||
490 | if (flag & REF_ISSYMREF) { | |
7695d118 RS |
491 | const char *target = resolve_ref_unsafe(refname, |
492 | RESOLVE_REF_READING, | |
744c040b | 493 | NULL, NULL); |
6130f86d | 494 | |
7fd12bfb MH |
495 | if (target) |
496 | strbuf_addf(buf, "ref: %s\n", strip_namespace(target)); | |
6130f86d | 497 | } else { |
f72f5421 | 498 | strbuf_addf(buf, "%s\n", oid_to_hex(oid)); |
6130f86d JK |
499 | } |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
b36045c1 | 504 | static void get_head(struct strbuf *hdr, char *arg) |
6130f86d JK |
505 | { |
506 | struct strbuf buf = STRBUF_INIT; | |
507 | ||
b36045c1 | 508 | select_getanyfile(hdr); |
6130f86d | 509 | head_ref_namespaced(show_head_ref, &buf); |
b36045c1 | 510 | send_strbuf(hdr, "text/plain", &buf); |
6130f86d JK |
511 | strbuf_release(&buf); |
512 | } | |
513 | ||
b36045c1 | 514 | static void get_info_packs(struct strbuf *hdr, char *arg) |
2f4038ab SP |
515 | { |
516 | size_t objdirlen = strlen(get_object_directory()); | |
517 | struct strbuf buf = STRBUF_INIT; | |
518 | struct packed_git *p; | |
519 | size_t cnt = 0; | |
520 | ||
b36045c1 | 521 | select_getanyfile(hdr); |
a80d72db | 522 | for (p = get_packed_git(the_repository); p; p = p->next) { |
2f4038ab SP |
523 | if (p->pack_local) |
524 | cnt++; | |
525 | } | |
526 | ||
527 | strbuf_grow(&buf, cnt * 53 + 2); | |
a80d72db | 528 | for (p = get_packed_git(the_repository); p; p = p->next) { |
2f4038ab SP |
529 | if (p->pack_local) |
530 | strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6); | |
531 | } | |
532 | strbuf_addch(&buf, '\n'); | |
533 | ||
b36045c1 EW |
534 | hdr_nocache(hdr); |
535 | send_strbuf(hdr, "text/plain; charset=utf-8", &buf); | |
2f4038ab SP |
536 | strbuf_release(&buf); |
537 | } | |
538 | ||
b36045c1 | 539 | static void check_content_type(struct strbuf *hdr, const char *accepted_type) |
556cfa3b SP |
540 | { |
541 | const char *actual_type = getenv("CONTENT_TYPE"); | |
542 | ||
543 | if (!actual_type) | |
544 | actual_type = ""; | |
545 | ||
546 | if (strcmp(actual_type, accepted_type)) { | |
b36045c1 EW |
547 | http_status(hdr, 415, "Unsupported Media Type"); |
548 | hdr_nocache(hdr); | |
549 | end_headers(hdr); | |
556cfa3b SP |
550 | format_write(1, |
551 | "Expected POST with Content-Type '%s'," | |
552 | " but received '%s' instead.\n", | |
553 | accepted_type, actual_type); | |
554 | exit(0); | |
555 | } | |
556 | } | |
557 | ||
b36045c1 | 558 | static void service_rpc(struct strbuf *hdr, char *service_name) |
556cfa3b SP |
559 | { |
560 | const char *argv[] = {NULL, "--stateless-rpc", ".", NULL}; | |
b36045c1 | 561 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
562 | struct strbuf buf = STRBUF_INIT; |
563 | ||
564 | strbuf_reset(&buf); | |
565 | strbuf_addf(&buf, "application/x-git-%s-request", svc->name); | |
b36045c1 | 566 | check_content_type(hdr, buf.buf); |
556cfa3b | 567 | |
b36045c1 | 568 | hdr_nocache(hdr); |
556cfa3b SP |
569 | |
570 | strbuf_reset(&buf); | |
571 | strbuf_addf(&buf, "application/x-git-%s-result", svc->name); | |
b36045c1 | 572 | hdr_str(hdr, content_type, buf.buf); |
556cfa3b | 573 | |
b36045c1 | 574 | end_headers(hdr); |
556cfa3b SP |
575 | |
576 | argv[0] = svc->name; | |
6bc0cb51 | 577 | run_service(argv, svc->buffer_input); |
556cfa3b SP |
578 | strbuf_release(&buf); |
579 | } | |
580 | ||
7253a023 | 581 | static int dead; |
2f4038ab SP |
582 | static NORETURN void die_webcgi(const char *err, va_list params) |
583 | { | |
7253a023 | 584 | if (dead <= 1) { |
b36045c1 EW |
585 | struct strbuf hdr = STRBUF_INIT; |
586 | ||
7253a023 | 587 | vreportf("fatal: ", err, params); |
2f4038ab | 588 | |
b36045c1 EW |
589 | http_status(&hdr, 500, "Internal Server Error"); |
590 | hdr_nocache(&hdr); | |
591 | end_headers(&hdr); | |
5856b5f5 SP |
592 | } |
593 | exit(0); /* we successfully reported a failure ;-) */ | |
2f4038ab SP |
594 | } |
595 | ||
7253a023 JK |
596 | static int die_webcgi_recursing(void) |
597 | { | |
598 | return dead++ > 1; | |
599 | } | |
600 | ||
917adc03 ML |
601 | static char* getdir(void) |
602 | { | |
603 | struct strbuf buf = STRBUF_INIT; | |
604 | char *pathinfo = getenv("PATH_INFO"); | |
605 | char *root = getenv("GIT_PROJECT_ROOT"); | |
606 | char *path = getenv("PATH_TRANSLATED"); | |
607 | ||
608 | if (root && *root) { | |
609 | if (!pathinfo || !*pathinfo) | |
610 | die("GIT_PROJECT_ROOT is set but PATH_INFO is not"); | |
34b6cb8b SP |
611 | if (daemon_avoid_alias(pathinfo)) |
612 | die("'%s': aliased", pathinfo); | |
cf688cc2 | 613 | end_url_with_slash(&buf, root); |
34b6cb8b SP |
614 | if (pathinfo[0] == '/') |
615 | pathinfo++; | |
917adc03 ML |
616 | strbuf_addstr(&buf, pathinfo); |
617 | return strbuf_detach(&buf, NULL); | |
618 | } else if (path && *path) { | |
619 | return xstrdup(path); | |
620 | } else | |
621 | die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server"); | |
622 | return NULL; | |
623 | } | |
624 | ||
2f4038ab SP |
625 | static struct service_cmd { |
626 | const char *method; | |
627 | const char *pattern; | |
b36045c1 | 628 | void (*imp)(struct strbuf *, char *); |
2f4038ab | 629 | } services[] = { |
6130f86d | 630 | {"GET", "/HEAD$", get_head}, |
2f4038ab SP |
631 | {"GET", "/info/refs$", get_info_refs}, |
632 | {"GET", "/objects/info/alternates$", get_text_file}, | |
633 | {"GET", "/objects/info/http-alternates$", get_text_file}, | |
634 | {"GET", "/objects/info/packs$", get_info_packs}, | |
635 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object}, | |
636 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file}, | |
556cfa3b SP |
637 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file}, |
638 | ||
639 | {"POST", "/git-upload-pack$", service_rpc}, | |
640 | {"POST", "/git-receive-pack$", service_rpc} | |
2f4038ab SP |
641 | }; |
642 | ||
b36045c1 EW |
643 | static int bad_request(struct strbuf *hdr, const struct service_cmd *c) |
644 | { | |
645 | const char *proto = getenv("SERVER_PROTOCOL"); | |
646 | ||
647 | if (proto && !strcmp(proto, "HTTP/1.1")) { | |
648 | http_status(hdr, 405, "Method Not Allowed"); | |
649 | hdr_str(hdr, "Allow", | |
650 | !strcmp(c->method, "GET") ? "GET, HEAD" : c->method); | |
651 | } else | |
652 | http_status(hdr, 400, "Bad Request"); | |
653 | hdr_nocache(hdr); | |
654 | end_headers(hdr); | |
655 | return 0; | |
656 | } | |
657 | ||
3f2e2297 | 658 | int cmd_main(int argc, const char **argv) |
2f4038ab SP |
659 | { |
660 | char *method = getenv("REQUEST_METHOD"); | |
917adc03 | 661 | char *dir; |
2f4038ab SP |
662 | struct service_cmd *cmd = NULL; |
663 | char *cmd_arg = NULL; | |
664 | int i; | |
b36045c1 | 665 | struct strbuf hdr = STRBUF_INIT; |
2f4038ab | 666 | |
2f4038ab | 667 | set_die_routine(die_webcgi); |
7253a023 | 668 | set_die_is_recursing_routine(die_webcgi_recursing); |
2f4038ab SP |
669 | |
670 | if (!method) | |
671 | die("No REQUEST_METHOD from server"); | |
672 | if (!strcmp(method, "HEAD")) | |
673 | method = "GET"; | |
917adc03 | 674 | dir = getdir(); |
2f4038ab SP |
675 | |
676 | for (i = 0; i < ARRAY_SIZE(services); i++) { | |
677 | struct service_cmd *c = &services[i]; | |
678 | regex_t re; | |
679 | regmatch_t out[1]; | |
680 | ||
681 | if (regcomp(&re, c->pattern, REG_EXTENDED)) | |
682 | die("Bogus regex in service table: %s", c->pattern); | |
683 | if (!regexec(&re, dir, 1, out, 0)) { | |
48aec1b1 | 684 | size_t n; |
2f4038ab | 685 | |
b36045c1 EW |
686 | if (strcmp(method, c->method)) |
687 | return bad_request(&hdr, c); | |
2f4038ab SP |
688 | |
689 | cmd = c; | |
48aec1b1 | 690 | n = out[0].rm_eo - out[0].rm_so; |
5c0b13f8 | 691 | cmd_arg = xmemdupz(dir + out[0].rm_so + 1, n - 1); |
2f4038ab SP |
692 | dir[out[0].rm_so] = 0; |
693 | break; | |
694 | } | |
695 | regfree(&re); | |
696 | } | |
697 | ||
698 | if (!cmd) | |
b36045c1 | 699 | not_found(&hdr, "Request not supported: '%s'", dir); |
2f4038ab SP |
700 | |
701 | setup_path(); | |
702 | if (!enter_repo(dir, 0)) | |
b36045c1 | 703 | not_found(&hdr, "Not a git repository: '%s'", dir); |
8b2bd7cd TC |
704 | if (!getenv("GIT_HTTP_EXPORT_ALL") && |
705 | access("git-daemon-export-ok", F_OK) ) | |
b36045c1 | 706 | not_found(&hdr, "Repository not exported: '%s'", dir); |
2f4038ab | 707 | |
6881f0cc | 708 | http_config(); |
6bc0cb51 JK |
709 | max_request_buffer = git_env_ulong("GIT_HTTP_MAX_REQUEST_BUFFER", |
710 | max_request_buffer); | |
711 | ||
b36045c1 | 712 | cmd->imp(&hdr, cmd_arg); |
2f4038ab SP |
713 | return 0; |
714 | } |