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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" | |
d807c4a0 | 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" |
237ffedd | 15 | #include "protocol.h" |
2f4038ab SP |
16 | |
17 | static const char content_type[] = "Content-Type"; | |
18 | static const char content_length[] = "Content-Length"; | |
19 | static const char last_modified[] = "Last-Modified"; | |
5abb013b | 20 | static int getanyfile = 1; |
6bc0cb51 | 21 | static unsigned long max_request_buffer = 10 * 1024 * 1024; |
2f4038ab | 22 | |
556cfa3b SP |
23 | static struct string_list *query_params; |
24 | ||
25 | struct rpc_service { | |
26 | const char *name; | |
27 | const char *config_name; | |
6bc0cb51 | 28 | unsigned buffer_input : 1; |
556cfa3b SP |
29 | signed enabled : 2; |
30 | }; | |
31 | ||
32 | static struct rpc_service rpc_service[] = { | |
6bc0cb51 JK |
33 | { "upload-pack", "uploadpack", 1, 1 }, |
34 | { "receive-pack", "receivepack", 0, -1 }, | |
556cfa3b SP |
35 | }; |
36 | ||
556cfa3b SP |
37 | static struct string_list *get_parameters(void) |
38 | { | |
39 | if (!query_params) { | |
40 | const char *query = getenv("QUERY_STRING"); | |
41 | ||
42 | query_params = xcalloc(1, sizeof(*query_params)); | |
43 | while (query && *query) { | |
638794cd JK |
44 | char *name = url_decode_parameter_name(&query); |
45 | char *value = url_decode_parameter_value(&query); | |
556cfa3b SP |
46 | struct string_list_item *i; |
47 | ||
e8c8b713 | 48 | i = string_list_lookup(query_params, name); |
556cfa3b | 49 | if (!i) |
78a395d3 | 50 | i = string_list_insert(query_params, name); |
556cfa3b SP |
51 | else |
52 | free(i->util); | |
53 | i->util = value; | |
54 | } | |
55 | } | |
56 | return query_params; | |
57 | } | |
58 | ||
59 | static const char *get_parameter(const char *name) | |
60 | { | |
61 | struct string_list_item *i; | |
e8c8b713 | 62 | i = string_list_lookup(get_parameters(), name); |
556cfa3b SP |
63 | return i ? i->util : NULL; |
64 | } | |
65 | ||
35487017 | 66 | __attribute__((format (printf, 2, 3))) |
2f4038ab SP |
67 | static void format_write(int fd, const char *fmt, ...) |
68 | { | |
69 | static char buffer[1024]; | |
70 | ||
71 | va_list args; | |
72 | unsigned n; | |
73 | ||
74 | va_start(args, fmt); | |
75 | n = vsnprintf(buffer, sizeof(buffer), fmt, args); | |
76 | va_end(args); | |
77 | if (n >= sizeof(buffer)) | |
78 | die("protocol error: impossibly long line"); | |
79 | ||
cdf4fb8e | 80 | write_or_die(fd, buffer, n); |
2f4038ab SP |
81 | } |
82 | ||
b36045c1 | 83 | static void http_status(struct strbuf *hdr, unsigned code, const char *msg) |
2f4038ab | 84 | { |
b36045c1 | 85 | strbuf_addf(hdr, "Status: %u %s\r\n", code, msg); |
2f4038ab SP |
86 | } |
87 | ||
b36045c1 | 88 | static void hdr_str(struct strbuf *hdr, const char *name, const char *value) |
2f4038ab | 89 | { |
b36045c1 | 90 | strbuf_addf(hdr, "%s: %s\r\n", name, value); |
2f4038ab SP |
91 | } |
92 | ||
b36045c1 | 93 | static void hdr_int(struct strbuf *hdr, const char *name, uintmax_t value) |
2f4038ab | 94 | { |
b36045c1 | 95 | strbuf_addf(hdr, "%s: %" PRIuMAX "\r\n", name, value); |
2f4038ab SP |
96 | } |
97 | ||
dddbad72 | 98 | static void hdr_date(struct strbuf *hdr, const char *name, timestamp_t when) |
2f4038ab | 99 | { |
a5481a6c | 100 | const char *value = show_date(when, 0, DATE_MODE(RFC2822)); |
b36045c1 | 101 | hdr_str(hdr, name, value); |
2f4038ab SP |
102 | } |
103 | ||
b36045c1 | 104 | static void hdr_nocache(struct strbuf *hdr) |
2f4038ab | 105 | { |
b36045c1 EW |
106 | hdr_str(hdr, "Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); |
107 | hdr_str(hdr, "Pragma", "no-cache"); | |
108 | hdr_str(hdr, "Cache-Control", "no-cache, max-age=0, must-revalidate"); | |
2f4038ab SP |
109 | } |
110 | ||
b36045c1 | 111 | static void hdr_cache_forever(struct strbuf *hdr) |
2f4038ab | 112 | { |
dddbad72 | 113 | timestamp_t now = time(NULL); |
b36045c1 EW |
114 | hdr_date(hdr, "Date", now); |
115 | hdr_date(hdr, "Expires", now + 31536000); | |
116 | hdr_str(hdr, "Cache-Control", "public, max-age=31536000"); | |
2f4038ab SP |
117 | } |
118 | ||
b36045c1 | 119 | static void end_headers(struct strbuf *hdr) |
2f4038ab | 120 | { |
b36045c1 EW |
121 | strbuf_add(hdr, "\r\n", 2); |
122 | write_or_die(1, hdr->buf, hdr->len); | |
123 | strbuf_release(hdr); | |
2f4038ab SP |
124 | } |
125 | ||
b36045c1 EW |
126 | __attribute__((format (printf, 2, 3))) |
127 | static NORETURN void not_found(struct strbuf *hdr, const char *err, ...) | |
2f4038ab SP |
128 | { |
129 | va_list params; | |
130 | ||
b36045c1 EW |
131 | http_status(hdr, 404, "Not Found"); |
132 | hdr_nocache(hdr); | |
133 | end_headers(hdr); | |
2f4038ab SP |
134 | |
135 | va_start(params, err); | |
136 | if (err && *err) | |
137 | vfprintf(stderr, err, params); | |
138 | va_end(params); | |
139 | exit(0); | |
140 | } | |
141 | ||
b36045c1 EW |
142 | __attribute__((format (printf, 2, 3))) |
143 | static NORETURN void forbidden(struct strbuf *hdr, const char *err, ...) | |
556cfa3b SP |
144 | { |
145 | va_list params; | |
146 | ||
b36045c1 EW |
147 | http_status(hdr, 403, "Forbidden"); |
148 | hdr_nocache(hdr); | |
149 | end_headers(hdr); | |
556cfa3b SP |
150 | |
151 | va_start(params, err); | |
152 | if (err && *err) | |
153 | vfprintf(stderr, err, params); | |
154 | va_end(params); | |
155 | exit(0); | |
156 | } | |
157 | ||
b36045c1 | 158 | static void select_getanyfile(struct strbuf *hdr) |
5abb013b SP |
159 | { |
160 | if (!getanyfile) | |
b36045c1 | 161 | forbidden(hdr, "Unsupported service: getanyfile"); |
5abb013b SP |
162 | } |
163 | ||
b36045c1 EW |
164 | static void send_strbuf(struct strbuf *hdr, |
165 | const char *type, struct strbuf *buf) | |
2f4038ab | 166 | { |
b36045c1 EW |
167 | hdr_int(hdr, content_length, buf->len); |
168 | hdr_str(hdr, content_type, type); | |
169 | end_headers(hdr); | |
cdf4fb8e | 170 | write_or_die(1, buf->buf, buf->len); |
2f4038ab SP |
171 | } |
172 | ||
b36045c1 EW |
173 | static void send_local_file(struct strbuf *hdr, const char *the_type, |
174 | const char *name) | |
2f4038ab | 175 | { |
fcd12db6 | 176 | char *p = git_pathdup("%s", name); |
2f4038ab SP |
177 | size_t buf_alloc = 8192; |
178 | char *buf = xmalloc(buf_alloc); | |
179 | int fd; | |
180 | struct stat sb; | |
2f4038ab SP |
181 | |
182 | fd = open(p, O_RDONLY); | |
183 | if (fd < 0) | |
b36045c1 | 184 | not_found(hdr, "Cannot open '%s': %s", p, strerror(errno)); |
2f4038ab SP |
185 | if (fstat(fd, &sb) < 0) |
186 | die_errno("Cannot stat '%s'", p); | |
187 | ||
b36045c1 EW |
188 | hdr_int(hdr, content_length, sb.st_size); |
189 | hdr_str(hdr, content_type, the_type); | |
190 | hdr_date(hdr, last_modified, sb.st_mtime); | |
191 | end_headers(hdr); | |
2f4038ab | 192 | |
4a5328d6 | 193 | for (;;) { |
2f4038ab SP |
194 | ssize_t n = xread(fd, buf, buf_alloc); |
195 | if (n < 0) | |
196 | die_errno("Cannot read '%s'", p); | |
197 | if (!n) | |
198 | break; | |
cdf4fb8e | 199 | write_or_die(1, buf, n); |
2f4038ab SP |
200 | } |
201 | close(fd); | |
202 | free(buf); | |
fcd12db6 | 203 | free(p); |
2f4038ab SP |
204 | } |
205 | ||
b36045c1 | 206 | static void get_text_file(struct strbuf *hdr, char *name) |
2f4038ab | 207 | { |
b36045c1 EW |
208 | select_getanyfile(hdr); |
209 | hdr_nocache(hdr); | |
210 | send_local_file(hdr, "text/plain", name); | |
2f4038ab SP |
211 | } |
212 | ||
b36045c1 | 213 | static void get_loose_object(struct strbuf *hdr, char *name) |
2f4038ab | 214 | { |
b36045c1 EW |
215 | select_getanyfile(hdr); |
216 | hdr_cache_forever(hdr); | |
217 | send_local_file(hdr, "application/x-git-loose-object", name); | |
2f4038ab SP |
218 | } |
219 | ||
b36045c1 | 220 | static void get_pack_file(struct strbuf *hdr, char *name) |
2f4038ab | 221 | { |
b36045c1 EW |
222 | select_getanyfile(hdr); |
223 | hdr_cache_forever(hdr); | |
224 | send_local_file(hdr, "application/x-git-packed-objects", name); | |
2f4038ab SP |
225 | } |
226 | ||
b36045c1 | 227 | static void get_idx_file(struct strbuf *hdr, char *name) |
2f4038ab | 228 | { |
b36045c1 EW |
229 | select_getanyfile(hdr); |
230 | hdr_cache_forever(hdr); | |
231 | send_local_file(hdr, "application/x-git-packed-objects-toc", name); | |
2f4038ab SP |
232 | } |
233 | ||
6881f0cc | 234 | static void http_config(void) |
556cfa3b | 235 | { |
6881f0cc TA |
236 | int i, value = 0; |
237 | struct strbuf var = STRBUF_INIT; | |
ae021d87 | 238 | |
6881f0cc | 239 | git_config_get_bool("http.getanyfile", &getanyfile); |
6bc0cb51 | 240 | git_config_get_ulong("http.maxrequestbuffer", &max_request_buffer); |
556cfa3b | 241 | |
6881f0cc TA |
242 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
243 | struct rpc_service *svc = &rpc_service[i]; | |
244 | strbuf_addf(&var, "http.%s", svc->config_name); | |
245 | if (!git_config_get_bool(var.buf, &value)) | |
246 | svc->enabled = value; | |
247 | strbuf_reset(&var); | |
5abb013b SP |
248 | } |
249 | ||
6881f0cc | 250 | strbuf_release(&var); |
556cfa3b SP |
251 | } |
252 | ||
b36045c1 | 253 | static struct rpc_service *select_service(struct strbuf *hdr, const char *name) |
556cfa3b | 254 | { |
ae021d87 | 255 | const char *svc_name; |
556cfa3b SP |
256 | struct rpc_service *svc = NULL; |
257 | int i; | |
258 | ||
ae021d87 | 259 | if (!skip_prefix(name, "git-", &svc_name)) |
b36045c1 | 260 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b SP |
261 | |
262 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { | |
263 | struct rpc_service *s = &rpc_service[i]; | |
ae021d87 | 264 | if (!strcmp(s->name, svc_name)) { |
556cfa3b SP |
265 | svc = s; |
266 | break; | |
267 | } | |
268 | } | |
269 | ||
270 | if (!svc) | |
b36045c1 | 271 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b | 272 | |
556cfa3b SP |
273 | if (svc->enabled < 0) { |
274 | const char *user = getenv("REMOTE_USER"); | |
275 | svc->enabled = (user && *user) ? 1 : 0; | |
276 | } | |
277 | if (!svc->enabled) | |
b36045c1 | 278 | forbidden(hdr, "Service not enabled: '%s'", svc->name); |
556cfa3b SP |
279 | return svc; |
280 | } | |
281 | ||
6b1fae1d MK |
282 | static void write_to_child(int out, const unsigned char *buf, ssize_t len, const char *prog_name) |
283 | { | |
284 | if (write_in_full(out, buf, len) < 0) | |
285 | die("unable to write to '%s'", prog_name); | |
286 | } | |
287 | ||
6bc0cb51 JK |
288 | /* |
289 | * This is basically strbuf_read(), except that if we | |
290 | * hit max_request_buffer we die (we'd rather reject a | |
291 | * maliciously large request than chew up infinite memory). | |
292 | */ | |
293 | static ssize_t read_request(int fd, unsigned char **out) | |
294 | { | |
295 | size_t len = 0, alloc = 8192; | |
296 | unsigned char *buf = xmalloc(alloc); | |
297 | ||
298 | if (max_request_buffer < alloc) | |
299 | max_request_buffer = alloc; | |
300 | ||
301 | while (1) { | |
302 | ssize_t cnt; | |
303 | ||
304 | cnt = read_in_full(fd, buf + len, alloc - len); | |
305 | if (cnt < 0) { | |
306 | free(buf); | |
307 | return -1; | |
308 | } | |
309 | ||
310 | /* partial read from read_in_full means we hit EOF */ | |
311 | len += cnt; | |
312 | if (len < alloc) { | |
313 | *out = buf; | |
314 | return len; | |
315 | } | |
316 | ||
317 | /* otherwise, grow and try again (if we can) */ | |
318 | if (alloc == max_request_buffer) | |
319 | die("request was larger than our maximum size (%lu);" | |
320 | " try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
321 | max_request_buffer); | |
322 | ||
323 | alloc = alloc_nr(alloc); | |
324 | if (alloc > max_request_buffer) | |
325 | alloc = max_request_buffer; | |
326 | REALLOC_ARRAY(buf, alloc); | |
327 | } | |
328 | } | |
329 | ||
330 | static void inflate_request(const char *prog_name, int out, int buffer_input) | |
556cfa3b | 331 | { |
ef49a7a0 | 332 | git_zstream stream; |
6bc0cb51 | 333 | unsigned char *full_request = NULL; |
556cfa3b SP |
334 | unsigned char in_buf[8192]; |
335 | unsigned char out_buf[8192]; | |
336 | unsigned long cnt = 0; | |
556cfa3b SP |
337 | |
338 | memset(&stream, 0, sizeof(stream)); | |
5e86c1fb | 339 | git_inflate_init_gzip_only(&stream); |
556cfa3b SP |
340 | |
341 | while (1) { | |
6bc0cb51 JK |
342 | ssize_t n; |
343 | ||
344 | if (buffer_input) { | |
345 | if (full_request) | |
346 | n = 0; /* nothing left to read */ | |
347 | else | |
348 | n = read_request(0, &full_request); | |
349 | stream.next_in = full_request; | |
350 | } else { | |
351 | n = xread(0, in_buf, sizeof(in_buf)); | |
352 | stream.next_in = in_buf; | |
353 | } | |
354 | ||
556cfa3b SP |
355 | if (n <= 0) |
356 | die("request ended in the middle of the gzip stream"); | |
556cfa3b SP |
357 | stream.avail_in = n; |
358 | ||
359 | while (0 < stream.avail_in) { | |
360 | int ret; | |
361 | ||
362 | stream.next_out = out_buf; | |
363 | stream.avail_out = sizeof(out_buf); | |
364 | ||
9e7e5ca3 | 365 | ret = git_inflate(&stream, Z_NO_FLUSH); |
556cfa3b SP |
366 | if (ret != Z_OK && ret != Z_STREAM_END) |
367 | die("zlib error inflating request, result %d", ret); | |
368 | ||
369 | n = stream.total_out - cnt; | |
6b1fae1d MK |
370 | write_to_child(out, out_buf, stream.total_out - cnt, prog_name); |
371 | cnt = stream.total_out; | |
556cfa3b SP |
372 | |
373 | if (ret == Z_STREAM_END) | |
374 | goto done; | |
375 | } | |
376 | } | |
377 | ||
378 | done: | |
9e7e5ca3 | 379 | git_inflate_end(&stream); |
556cfa3b | 380 | close(out); |
6bc0cb51 JK |
381 | free(full_request); |
382 | } | |
383 | ||
384 | static void copy_request(const char *prog_name, int out) | |
385 | { | |
386 | unsigned char *buf; | |
387 | ssize_t n = read_request(0, &buf); | |
388 | if (n < 0) | |
389 | die_errno("error reading request body"); | |
6b1fae1d | 390 | write_to_child(out, buf, n, prog_name); |
6bc0cb51 JK |
391 | close(out); |
392 | free(buf); | |
556cfa3b SP |
393 | } |
394 | ||
6bc0cb51 | 395 | static void run_service(const char **argv, int buffer_input) |
556cfa3b SP |
396 | { |
397 | const char *encoding = getenv("HTTP_CONTENT_ENCODING"); | |
398 | const char *user = getenv("REMOTE_USER"); | |
399 | const char *host = getenv("REMOTE_ADDR"); | |
556cfa3b | 400 | int gzipped_request = 0; |
d3180279 | 401 | struct child_process cld = CHILD_PROCESS_INIT; |
556cfa3b SP |
402 | |
403 | if (encoding && !strcmp(encoding, "gzip")) | |
404 | gzipped_request = 1; | |
405 | else if (encoding && !strcmp(encoding, "x-gzip")) | |
406 | gzipped_request = 1; | |
407 | ||
408 | if (!user || !*user) | |
409 | user = "anonymous"; | |
410 | if (!host || !*host) | |
411 | host = "(none)"; | |
412 | ||
e32a4581 | 413 | if (!getenv("GIT_COMMITTER_NAME")) |
a9154590 | 414 | argv_array_pushf(&cld.env_array, "GIT_COMMITTER_NAME=%s", user); |
e32a4581 | 415 | if (!getenv("GIT_COMMITTER_EMAIL")) |
a9154590 RS |
416 | argv_array_pushf(&cld.env_array, |
417 | "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); | |
556cfa3b | 418 | |
556cfa3b | 419 | cld.argv = argv; |
6bc0cb51 | 420 | if (buffer_input || gzipped_request) |
556cfa3b SP |
421 | cld.in = -1; |
422 | cld.git_cmd = 1; | |
423 | if (start_command(&cld)) | |
424 | exit(1); | |
425 | ||
426 | close(1); | |
427 | if (gzipped_request) | |
6bc0cb51 JK |
428 | inflate_request(argv[0], cld.in, buffer_input); |
429 | else if (buffer_input) | |
430 | copy_request(argv[0], cld.in); | |
556cfa3b SP |
431 | else |
432 | close(0); | |
433 | ||
434 | if (finish_command(&cld)) | |
435 | exit(1); | |
556cfa3b SP |
436 | } |
437 | ||
f72f5421 MH |
438 | static int show_text_ref(const char *name, const struct object_id *oid, |
439 | int flag, void *cb_data) | |
2f4038ab | 440 | { |
6130f86d | 441 | const char *name_nons = strip_namespace(name); |
2f4038ab | 442 | struct strbuf *buf = cb_data; |
c251c83d | 443 | struct object *o = parse_object(oid); |
2f4038ab SP |
444 | if (!o) |
445 | return 0; | |
446 | ||
f72f5421 | 447 | strbuf_addf(buf, "%s\t%s\n", oid_to_hex(oid), name_nons); |
2f4038ab SP |
448 | if (o->type == OBJ_TAG) { |
449 | o = deref_tag(o, name, 0); | |
450 | if (!o) | |
451 | return 0; | |
f2fd0760 | 452 | strbuf_addf(buf, "%s\t%s^{}\n", oid_to_hex(&o->oid), |
6130f86d | 453 | name_nons); |
2f4038ab SP |
454 | } |
455 | return 0; | |
456 | } | |
457 | ||
b36045c1 | 458 | static void get_info_refs(struct strbuf *hdr, char *arg) |
2f4038ab | 459 | { |
556cfa3b | 460 | const char *service_name = get_parameter("service"); |
2f4038ab SP |
461 | struct strbuf buf = STRBUF_INIT; |
462 | ||
b36045c1 | 463 | hdr_nocache(hdr); |
556cfa3b SP |
464 | |
465 | if (service_name) { | |
466 | const char *argv[] = {NULL /* service name */, | |
467 | "--stateless-rpc", "--advertise-refs", | |
468 | ".", NULL}; | |
b36045c1 | 469 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
470 | |
471 | strbuf_addf(&buf, "application/x-git-%s-advertisement", | |
472 | svc->name); | |
b36045c1 EW |
473 | hdr_str(hdr, content_type, buf.buf); |
474 | end_headers(hdr); | |
556cfa3b | 475 | |
237ffedd BW |
476 | |
477 | if (determine_protocol_version_server() != protocol_v2) { | |
478 | packet_write_fmt(1, "# service=git-%s\n", svc->name); | |
479 | packet_flush(1); | |
480 | } | |
556cfa3b SP |
481 | |
482 | argv[0] = svc->name; | |
6bc0cb51 | 483 | run_service(argv, 0); |
556cfa3b SP |
484 | |
485 | } else { | |
b36045c1 | 486 | select_getanyfile(hdr); |
6130f86d | 487 | for_each_namespaced_ref(show_text_ref, &buf); |
b36045c1 | 488 | send_strbuf(hdr, "text/plain", &buf); |
556cfa3b | 489 | } |
2f4038ab SP |
490 | strbuf_release(&buf); |
491 | } | |
492 | ||
f72f5421 MH |
493 | static int show_head_ref(const char *refname, const struct object_id *oid, |
494 | int flag, void *cb_data) | |
6130f86d JK |
495 | { |
496 | struct strbuf *buf = cb_data; | |
497 | ||
498 | if (flag & REF_ISSYMREF) { | |
7695d118 RS |
499 | const char *target = resolve_ref_unsafe(refname, |
500 | RESOLVE_REF_READING, | |
744c040b | 501 | NULL, NULL); |
6130f86d | 502 | |
7fd12bfb MH |
503 | if (target) |
504 | strbuf_addf(buf, "ref: %s\n", strip_namespace(target)); | |
6130f86d | 505 | } else { |
f72f5421 | 506 | strbuf_addf(buf, "%s\n", oid_to_hex(oid)); |
6130f86d JK |
507 | } |
508 | ||
509 | return 0; | |
510 | } | |
511 | ||
b36045c1 | 512 | static void get_head(struct strbuf *hdr, char *arg) |
6130f86d JK |
513 | { |
514 | struct strbuf buf = STRBUF_INIT; | |
515 | ||
b36045c1 | 516 | select_getanyfile(hdr); |
6130f86d | 517 | head_ref_namespaced(show_head_ref, &buf); |
b36045c1 | 518 | send_strbuf(hdr, "text/plain", &buf); |
6130f86d JK |
519 | strbuf_release(&buf); |
520 | } | |
521 | ||
b36045c1 | 522 | static void get_info_packs(struct strbuf *hdr, char *arg) |
2f4038ab SP |
523 | { |
524 | size_t objdirlen = strlen(get_object_directory()); | |
525 | struct strbuf buf = STRBUF_INIT; | |
526 | struct packed_git *p; | |
527 | size_t cnt = 0; | |
528 | ||
b36045c1 | 529 | select_getanyfile(hdr); |
a80d72db | 530 | for (p = get_packed_git(the_repository); p; p = p->next) { |
2f4038ab SP |
531 | if (p->pack_local) |
532 | cnt++; | |
533 | } | |
534 | ||
535 | strbuf_grow(&buf, cnt * 53 + 2); | |
a80d72db | 536 | for (p = get_packed_git(the_repository); p; p = p->next) { |
2f4038ab SP |
537 | if (p->pack_local) |
538 | strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6); | |
539 | } | |
540 | strbuf_addch(&buf, '\n'); | |
541 | ||
b36045c1 EW |
542 | hdr_nocache(hdr); |
543 | send_strbuf(hdr, "text/plain; charset=utf-8", &buf); | |
2f4038ab SP |
544 | strbuf_release(&buf); |
545 | } | |
546 | ||
b36045c1 | 547 | static void check_content_type(struct strbuf *hdr, const char *accepted_type) |
556cfa3b SP |
548 | { |
549 | const char *actual_type = getenv("CONTENT_TYPE"); | |
550 | ||
551 | if (!actual_type) | |
552 | actual_type = ""; | |
553 | ||
554 | if (strcmp(actual_type, accepted_type)) { | |
b36045c1 EW |
555 | http_status(hdr, 415, "Unsupported Media Type"); |
556 | hdr_nocache(hdr); | |
557 | end_headers(hdr); | |
556cfa3b SP |
558 | format_write(1, |
559 | "Expected POST with Content-Type '%s'," | |
560 | " but received '%s' instead.\n", | |
561 | accepted_type, actual_type); | |
562 | exit(0); | |
563 | } | |
564 | } | |
565 | ||
b36045c1 | 566 | static void service_rpc(struct strbuf *hdr, char *service_name) |
556cfa3b SP |
567 | { |
568 | const char *argv[] = {NULL, "--stateless-rpc", ".", NULL}; | |
b36045c1 | 569 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
570 | struct strbuf buf = STRBUF_INIT; |
571 | ||
572 | strbuf_reset(&buf); | |
573 | strbuf_addf(&buf, "application/x-git-%s-request", svc->name); | |
b36045c1 | 574 | check_content_type(hdr, buf.buf); |
556cfa3b | 575 | |
b36045c1 | 576 | hdr_nocache(hdr); |
556cfa3b SP |
577 | |
578 | strbuf_reset(&buf); | |
579 | strbuf_addf(&buf, "application/x-git-%s-result", svc->name); | |
b36045c1 | 580 | hdr_str(hdr, content_type, buf.buf); |
556cfa3b | 581 | |
b36045c1 | 582 | end_headers(hdr); |
556cfa3b SP |
583 | |
584 | argv[0] = svc->name; | |
6bc0cb51 | 585 | run_service(argv, svc->buffer_input); |
556cfa3b SP |
586 | strbuf_release(&buf); |
587 | } | |
588 | ||
7253a023 | 589 | static int dead; |
2f4038ab SP |
590 | static NORETURN void die_webcgi(const char *err, va_list params) |
591 | { | |
7253a023 | 592 | if (dead <= 1) { |
b36045c1 EW |
593 | struct strbuf hdr = STRBUF_INIT; |
594 | ||
7253a023 | 595 | vreportf("fatal: ", err, params); |
2f4038ab | 596 | |
b36045c1 EW |
597 | http_status(&hdr, 500, "Internal Server Error"); |
598 | hdr_nocache(&hdr); | |
599 | end_headers(&hdr); | |
5856b5f5 SP |
600 | } |
601 | exit(0); /* we successfully reported a failure ;-) */ | |
2f4038ab SP |
602 | } |
603 | ||
7253a023 JK |
604 | static int die_webcgi_recursing(void) |
605 | { | |
606 | return dead++ > 1; | |
607 | } | |
608 | ||
917adc03 ML |
609 | static char* getdir(void) |
610 | { | |
611 | struct strbuf buf = STRBUF_INIT; | |
612 | char *pathinfo = getenv("PATH_INFO"); | |
613 | char *root = getenv("GIT_PROJECT_ROOT"); | |
614 | char *path = getenv("PATH_TRANSLATED"); | |
615 | ||
616 | if (root && *root) { | |
617 | if (!pathinfo || !*pathinfo) | |
618 | die("GIT_PROJECT_ROOT is set but PATH_INFO is not"); | |
34b6cb8b SP |
619 | if (daemon_avoid_alias(pathinfo)) |
620 | die("'%s': aliased", pathinfo); | |
cf688cc2 | 621 | end_url_with_slash(&buf, root); |
34b6cb8b SP |
622 | if (pathinfo[0] == '/') |
623 | pathinfo++; | |
917adc03 ML |
624 | strbuf_addstr(&buf, pathinfo); |
625 | return strbuf_detach(&buf, NULL); | |
626 | } else if (path && *path) { | |
627 | return xstrdup(path); | |
628 | } else | |
629 | die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server"); | |
630 | return NULL; | |
631 | } | |
632 | ||
2f4038ab SP |
633 | static struct service_cmd { |
634 | const char *method; | |
635 | const char *pattern; | |
b36045c1 | 636 | void (*imp)(struct strbuf *, char *); |
2f4038ab | 637 | } services[] = { |
6130f86d | 638 | {"GET", "/HEAD$", get_head}, |
2f4038ab SP |
639 | {"GET", "/info/refs$", get_info_refs}, |
640 | {"GET", "/objects/info/alternates$", get_text_file}, | |
641 | {"GET", "/objects/info/http-alternates$", get_text_file}, | |
642 | {"GET", "/objects/info/packs$", get_info_packs}, | |
643 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object}, | |
644 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file}, | |
556cfa3b SP |
645 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file}, |
646 | ||
647 | {"POST", "/git-upload-pack$", service_rpc}, | |
648 | {"POST", "/git-receive-pack$", service_rpc} | |
2f4038ab SP |
649 | }; |
650 | ||
b36045c1 EW |
651 | static int bad_request(struct strbuf *hdr, const struct service_cmd *c) |
652 | { | |
653 | const char *proto = getenv("SERVER_PROTOCOL"); | |
654 | ||
655 | if (proto && !strcmp(proto, "HTTP/1.1")) { | |
656 | http_status(hdr, 405, "Method Not Allowed"); | |
657 | hdr_str(hdr, "Allow", | |
658 | !strcmp(c->method, "GET") ? "GET, HEAD" : c->method); | |
659 | } else | |
660 | http_status(hdr, 400, "Bad Request"); | |
661 | hdr_nocache(hdr); | |
662 | end_headers(hdr); | |
663 | return 0; | |
664 | } | |
665 | ||
3f2e2297 | 666 | int cmd_main(int argc, const char **argv) |
2f4038ab SP |
667 | { |
668 | char *method = getenv("REQUEST_METHOD"); | |
917adc03 | 669 | char *dir; |
2f4038ab SP |
670 | struct service_cmd *cmd = NULL; |
671 | char *cmd_arg = NULL; | |
672 | int i; | |
b36045c1 | 673 | struct strbuf hdr = STRBUF_INIT; |
2f4038ab | 674 | |
2f4038ab | 675 | set_die_routine(die_webcgi); |
7253a023 | 676 | set_die_is_recursing_routine(die_webcgi_recursing); |
2f4038ab SP |
677 | |
678 | if (!method) | |
679 | die("No REQUEST_METHOD from server"); | |
680 | if (!strcmp(method, "HEAD")) | |
681 | method = "GET"; | |
917adc03 | 682 | dir = getdir(); |
2f4038ab SP |
683 | |
684 | for (i = 0; i < ARRAY_SIZE(services); i++) { | |
685 | struct service_cmd *c = &services[i]; | |
686 | regex_t re; | |
687 | regmatch_t out[1]; | |
688 | ||
689 | if (regcomp(&re, c->pattern, REG_EXTENDED)) | |
690 | die("Bogus regex in service table: %s", c->pattern); | |
691 | if (!regexec(&re, dir, 1, out, 0)) { | |
48aec1b1 | 692 | size_t n; |
2f4038ab | 693 | |
b36045c1 EW |
694 | if (strcmp(method, c->method)) |
695 | return bad_request(&hdr, c); | |
2f4038ab SP |
696 | |
697 | cmd = c; | |
48aec1b1 | 698 | n = out[0].rm_eo - out[0].rm_so; |
5c0b13f8 | 699 | cmd_arg = xmemdupz(dir + out[0].rm_so + 1, n - 1); |
2f4038ab SP |
700 | dir[out[0].rm_so] = 0; |
701 | break; | |
702 | } | |
703 | regfree(&re); | |
704 | } | |
705 | ||
706 | if (!cmd) | |
b36045c1 | 707 | not_found(&hdr, "Request not supported: '%s'", dir); |
2f4038ab SP |
708 | |
709 | setup_path(); | |
710 | if (!enter_repo(dir, 0)) | |
b36045c1 | 711 | not_found(&hdr, "Not a git repository: '%s'", dir); |
8b2bd7cd TC |
712 | if (!getenv("GIT_HTTP_EXPORT_ALL") && |
713 | access("git-daemon-export-ok", F_OK) ) | |
b36045c1 | 714 | not_found(&hdr, "Repository not exported: '%s'", dir); |
2f4038ab | 715 | |
6881f0cc | 716 | http_config(); |
6bc0cb51 JK |
717 | max_request_buffer = git_env_ulong("GIT_HTTP_MAX_REQUEST_BUFFER", |
718 | max_request_buffer); | |
719 | ||
b36045c1 | 720 | cmd->imp(&hdr, cmd_arg); |
2f4038ab SP |
721 | return 0; |
722 | } |