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