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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" |
dbbcd44f | 12 | #include "strvec.h" |
0abe14f6 | 13 | #include "packfile.h" |
a80d72db | 14 | #include "object-store.h" |
237ffedd | 15 | #include "protocol.h" |
88c7b4c3 | 16 | #include "date.h" |
2f4038ab SP |
17 | |
18 | static const char content_type[] = "Content-Type"; | |
19 | static const char content_length[] = "Content-Length"; | |
20 | static const char last_modified[] = "Last-Modified"; | |
5abb013b | 21 | static int getanyfile = 1; |
6bc0cb51 | 22 | static unsigned long max_request_buffer = 10 * 1024 * 1024; |
2f4038ab | 23 | |
556cfa3b SP |
24 | static struct string_list *query_params; |
25 | ||
26 | struct rpc_service { | |
27 | const char *name; | |
28 | const char *config_name; | |
6bc0cb51 | 29 | unsigned buffer_input : 1; |
556cfa3b SP |
30 | signed enabled : 2; |
31 | }; | |
32 | ||
33 | static struct rpc_service rpc_service[] = { | |
6bc0cb51 JK |
34 | { "upload-pack", "uploadpack", 1, 1 }, |
35 | { "receive-pack", "receivepack", 0, -1 }, | |
556cfa3b SP |
36 | }; |
37 | ||
556cfa3b SP |
38 | static struct string_list *get_parameters(void) |
39 | { | |
40 | if (!query_params) { | |
41 | const char *query = getenv("QUERY_STRING"); | |
42 | ||
ca56dadb | 43 | CALLOC_ARRAY(query_params, 1); |
556cfa3b | 44 | while (query && *query) { |
638794cd JK |
45 | char *name = url_decode_parameter_name(&query); |
46 | char *value = url_decode_parameter_value(&query); | |
556cfa3b SP |
47 | struct string_list_item *i; |
48 | ||
e8c8b713 | 49 | i = string_list_lookup(query_params, name); |
556cfa3b | 50 | if (!i) |
78a395d3 | 51 | i = string_list_insert(query_params, name); |
556cfa3b SP |
52 | else |
53 | free(i->util); | |
54 | i->util = value; | |
55 | } | |
56 | } | |
57 | return query_params; | |
58 | } | |
59 | ||
60 | static const char *get_parameter(const char *name) | |
61 | { | |
62 | struct string_list_item *i; | |
e8c8b713 | 63 | i = string_list_lookup(get_parameters(), name); |
556cfa3b SP |
64 | return i ? i->util : NULL; |
65 | } | |
66 | ||
35487017 | 67 | __attribute__((format (printf, 2, 3))) |
2f4038ab SP |
68 | static void format_write(int fd, const char *fmt, ...) |
69 | { | |
70 | static char buffer[1024]; | |
71 | ||
72 | va_list args; | |
73 | unsigned n; | |
74 | ||
75 | va_start(args, fmt); | |
76 | n = vsnprintf(buffer, sizeof(buffer), fmt, args); | |
77 | va_end(args); | |
78 | if (n >= sizeof(buffer)) | |
79 | die("protocol error: impossibly long line"); | |
80 | ||
cdf4fb8e | 81 | write_or_die(fd, buffer, n); |
2f4038ab SP |
82 | } |
83 | ||
b36045c1 | 84 | static void http_status(struct strbuf *hdr, unsigned code, const char *msg) |
2f4038ab | 85 | { |
b36045c1 | 86 | strbuf_addf(hdr, "Status: %u %s\r\n", code, msg); |
2f4038ab SP |
87 | } |
88 | ||
b36045c1 | 89 | static void hdr_str(struct strbuf *hdr, const char *name, const char *value) |
2f4038ab | 90 | { |
b36045c1 | 91 | strbuf_addf(hdr, "%s: %s\r\n", name, value); |
2f4038ab SP |
92 | } |
93 | ||
b36045c1 | 94 | static void hdr_int(struct strbuf *hdr, const char *name, uintmax_t value) |
2f4038ab | 95 | { |
b36045c1 | 96 | strbuf_addf(hdr, "%s: %" PRIuMAX "\r\n", name, value); |
2f4038ab SP |
97 | } |
98 | ||
dddbad72 | 99 | static void hdr_date(struct strbuf *hdr, const char *name, timestamp_t when) |
2f4038ab | 100 | { |
a5481a6c | 101 | const char *value = show_date(when, 0, DATE_MODE(RFC2822)); |
b36045c1 | 102 | hdr_str(hdr, name, value); |
2f4038ab SP |
103 | } |
104 | ||
b36045c1 | 105 | static void hdr_nocache(struct strbuf *hdr) |
2f4038ab | 106 | { |
b36045c1 EW |
107 | hdr_str(hdr, "Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); |
108 | hdr_str(hdr, "Pragma", "no-cache"); | |
109 | hdr_str(hdr, "Cache-Control", "no-cache, max-age=0, must-revalidate"); | |
2f4038ab SP |
110 | } |
111 | ||
b36045c1 | 112 | static void hdr_cache_forever(struct strbuf *hdr) |
2f4038ab | 113 | { |
dddbad72 | 114 | timestamp_t now = time(NULL); |
b36045c1 EW |
115 | hdr_date(hdr, "Date", now); |
116 | hdr_date(hdr, "Expires", now + 31536000); | |
117 | hdr_str(hdr, "Cache-Control", "public, max-age=31536000"); | |
2f4038ab SP |
118 | } |
119 | ||
b36045c1 | 120 | static void end_headers(struct strbuf *hdr) |
2f4038ab | 121 | { |
b36045c1 EW |
122 | strbuf_add(hdr, "\r\n", 2); |
123 | write_or_die(1, hdr->buf, hdr->len); | |
124 | strbuf_release(hdr); | |
2f4038ab SP |
125 | } |
126 | ||
b36045c1 EW |
127 | __attribute__((format (printf, 2, 3))) |
128 | static NORETURN void not_found(struct strbuf *hdr, const char *err, ...) | |
2f4038ab SP |
129 | { |
130 | va_list params; | |
131 | ||
b36045c1 EW |
132 | http_status(hdr, 404, "Not Found"); |
133 | hdr_nocache(hdr); | |
134 | end_headers(hdr); | |
2f4038ab SP |
135 | |
136 | va_start(params, err); | |
137 | if (err && *err) | |
138 | vfprintf(stderr, err, params); | |
139 | va_end(params); | |
140 | exit(0); | |
141 | } | |
142 | ||
b36045c1 EW |
143 | __attribute__((format (printf, 2, 3))) |
144 | static NORETURN void forbidden(struct strbuf *hdr, const char *err, ...) | |
556cfa3b SP |
145 | { |
146 | va_list params; | |
147 | ||
b36045c1 EW |
148 | http_status(hdr, 403, "Forbidden"); |
149 | hdr_nocache(hdr); | |
150 | end_headers(hdr); | |
556cfa3b SP |
151 | |
152 | va_start(params, err); | |
153 | if (err && *err) | |
154 | vfprintf(stderr, err, params); | |
155 | va_end(params); | |
156 | exit(0); | |
157 | } | |
158 | ||
b36045c1 | 159 | static void select_getanyfile(struct strbuf *hdr) |
5abb013b SP |
160 | { |
161 | if (!getanyfile) | |
b36045c1 | 162 | forbidden(hdr, "Unsupported service: getanyfile"); |
5abb013b SP |
163 | } |
164 | ||
b36045c1 EW |
165 | static void send_strbuf(struct strbuf *hdr, |
166 | const char *type, struct strbuf *buf) | |
2f4038ab | 167 | { |
b36045c1 EW |
168 | hdr_int(hdr, content_length, buf->len); |
169 | hdr_str(hdr, content_type, type); | |
170 | end_headers(hdr); | |
cdf4fb8e | 171 | write_or_die(1, buf->buf, buf->len); |
2f4038ab SP |
172 | } |
173 | ||
b36045c1 EW |
174 | static void send_local_file(struct strbuf *hdr, const char *the_type, |
175 | const char *name) | |
2f4038ab | 176 | { |
fcd12db6 | 177 | char *p = git_pathdup("%s", name); |
2f4038ab SP |
178 | size_t buf_alloc = 8192; |
179 | char *buf = xmalloc(buf_alloc); | |
180 | int fd; | |
181 | struct stat sb; | |
2f4038ab SP |
182 | |
183 | fd = open(p, O_RDONLY); | |
184 | if (fd < 0) | |
b36045c1 | 185 | not_found(hdr, "Cannot open '%s': %s", p, strerror(errno)); |
2f4038ab SP |
186 | if (fstat(fd, &sb) < 0) |
187 | die_errno("Cannot stat '%s'", p); | |
188 | ||
b36045c1 EW |
189 | hdr_int(hdr, content_length, sb.st_size); |
190 | hdr_str(hdr, content_type, the_type); | |
191 | hdr_date(hdr, last_modified, sb.st_mtime); | |
192 | end_headers(hdr); | |
2f4038ab | 193 | |
4a5328d6 | 194 | for (;;) { |
2f4038ab SP |
195 | ssize_t n = xread(fd, buf, buf_alloc); |
196 | if (n < 0) | |
197 | die_errno("Cannot read '%s'", p); | |
198 | if (!n) | |
199 | break; | |
cdf4fb8e | 200 | write_or_die(1, buf, n); |
2f4038ab SP |
201 | } |
202 | close(fd); | |
203 | free(buf); | |
fcd12db6 | 204 | free(p); |
2f4038ab SP |
205 | } |
206 | ||
b36045c1 | 207 | static void get_text_file(struct strbuf *hdr, char *name) |
2f4038ab | 208 | { |
b36045c1 EW |
209 | select_getanyfile(hdr); |
210 | hdr_nocache(hdr); | |
211 | send_local_file(hdr, "text/plain", name); | |
2f4038ab SP |
212 | } |
213 | ||
b36045c1 | 214 | static void get_loose_object(struct strbuf *hdr, char *name) |
2f4038ab | 215 | { |
b36045c1 EW |
216 | select_getanyfile(hdr); |
217 | hdr_cache_forever(hdr); | |
218 | send_local_file(hdr, "application/x-git-loose-object", name); | |
2f4038ab SP |
219 | } |
220 | ||
b36045c1 | 221 | static void get_pack_file(struct strbuf *hdr, char *name) |
2f4038ab | 222 | { |
b36045c1 EW |
223 | select_getanyfile(hdr); |
224 | hdr_cache_forever(hdr); | |
225 | send_local_file(hdr, "application/x-git-packed-objects", name); | |
2f4038ab SP |
226 | } |
227 | ||
b36045c1 | 228 | static void get_idx_file(struct strbuf *hdr, char *name) |
2f4038ab | 229 | { |
b36045c1 EW |
230 | select_getanyfile(hdr); |
231 | hdr_cache_forever(hdr); | |
232 | send_local_file(hdr, "application/x-git-packed-objects-toc", name); | |
2f4038ab SP |
233 | } |
234 | ||
6881f0cc | 235 | static void http_config(void) |
556cfa3b | 236 | { |
6881f0cc TA |
237 | int i, value = 0; |
238 | struct strbuf var = STRBUF_INIT; | |
ae021d87 | 239 | |
6881f0cc | 240 | git_config_get_bool("http.getanyfile", &getanyfile); |
6bc0cb51 | 241 | git_config_get_ulong("http.maxrequestbuffer", &max_request_buffer); |
556cfa3b | 242 | |
6881f0cc TA |
243 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
244 | struct rpc_service *svc = &rpc_service[i]; | |
245 | strbuf_addf(&var, "http.%s", svc->config_name); | |
246 | if (!git_config_get_bool(var.buf, &value)) | |
247 | svc->enabled = value; | |
248 | strbuf_reset(&var); | |
5abb013b SP |
249 | } |
250 | ||
6881f0cc | 251 | strbuf_release(&var); |
556cfa3b SP |
252 | } |
253 | ||
b36045c1 | 254 | static struct rpc_service *select_service(struct strbuf *hdr, const char *name) |
556cfa3b | 255 | { |
ae021d87 | 256 | const char *svc_name; |
556cfa3b SP |
257 | struct rpc_service *svc = NULL; |
258 | int i; | |
259 | ||
ae021d87 | 260 | if (!skip_prefix(name, "git-", &svc_name)) |
b36045c1 | 261 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b SP |
262 | |
263 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { | |
264 | struct rpc_service *s = &rpc_service[i]; | |
ae021d87 | 265 | if (!strcmp(s->name, svc_name)) { |
556cfa3b SP |
266 | svc = s; |
267 | break; | |
268 | } | |
269 | } | |
270 | ||
271 | if (!svc) | |
b36045c1 | 272 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b | 273 | |
556cfa3b SP |
274 | if (svc->enabled < 0) { |
275 | const char *user = getenv("REMOTE_USER"); | |
276 | svc->enabled = (user && *user) ? 1 : 0; | |
277 | } | |
278 | if (!svc->enabled) | |
b36045c1 | 279 | forbidden(hdr, "Service not enabled: '%s'", svc->name); |
556cfa3b SP |
280 | return svc; |
281 | } | |
282 | ||
6b1fae1d MK |
283 | static void write_to_child(int out, const unsigned char *buf, ssize_t len, const char *prog_name) |
284 | { | |
285 | if (write_in_full(out, buf, len) < 0) | |
286 | die("unable to write to '%s'", prog_name); | |
287 | } | |
288 | ||
6bc0cb51 JK |
289 | /* |
290 | * This is basically strbuf_read(), except that if we | |
291 | * hit max_request_buffer we die (we'd rather reject a | |
292 | * maliciously large request than chew up infinite memory). | |
293 | */ | |
c79edf73 | 294 | static ssize_t read_request_eof(int fd, unsigned char **out) |
6bc0cb51 JK |
295 | { |
296 | size_t len = 0, alloc = 8192; | |
297 | unsigned char *buf = xmalloc(alloc); | |
298 | ||
299 | if (max_request_buffer < alloc) | |
300 | max_request_buffer = alloc; | |
301 | ||
302 | while (1) { | |
303 | ssize_t cnt; | |
304 | ||
305 | cnt = read_in_full(fd, buf + len, alloc - len); | |
306 | if (cnt < 0) { | |
307 | free(buf); | |
308 | return -1; | |
309 | } | |
310 | ||
311 | /* partial read from read_in_full means we hit EOF */ | |
312 | len += cnt; | |
313 | if (len < alloc) { | |
314 | *out = buf; | |
315 | return len; | |
316 | } | |
317 | ||
318 | /* otherwise, grow and try again (if we can) */ | |
319 | if (alloc == max_request_buffer) | |
320 | die("request was larger than our maximum size (%lu);" | |
321 | " try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
322 | max_request_buffer); | |
323 | ||
324 | alloc = alloc_nr(alloc); | |
325 | if (alloc > max_request_buffer) | |
326 | alloc = max_request_buffer; | |
327 | REALLOC_ARRAY(buf, alloc); | |
328 | } | |
329 | } | |
330 | ||
c79edf73 MK |
331 | static ssize_t read_request_fixed_len(int fd, ssize_t req_len, unsigned char **out) |
332 | { | |
333 | unsigned char *buf = NULL; | |
334 | ssize_t cnt = 0; | |
335 | ||
336 | if (max_request_buffer < req_len) { | |
337 | die("request was larger than our maximum size (%lu): " | |
338 | "%" PRIuMAX "; try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
339 | max_request_buffer, (uintmax_t)req_len); | |
340 | } | |
341 | ||
342 | buf = xmalloc(req_len); | |
343 | cnt = read_in_full(fd, buf, req_len); | |
344 | if (cnt < 0) { | |
345 | free(buf); | |
346 | return -1; | |
347 | } | |
348 | *out = buf; | |
349 | return cnt; | |
350 | } | |
351 | ||
352 | static ssize_t get_content_length(void) | |
353 | { | |
354 | ssize_t val = -1; | |
355 | const char *str = getenv("CONTENT_LENGTH"); | |
356 | ||
574c513e | 357 | if (str && *str && !git_parse_ssize_t(str, &val)) |
c79edf73 MK |
358 | die("failed to parse CONTENT_LENGTH: %s", str); |
359 | return val; | |
360 | } | |
361 | ||
362 | static ssize_t read_request(int fd, unsigned char **out, ssize_t req_len) | |
363 | { | |
364 | if (req_len < 0) | |
365 | return read_request_eof(fd, out); | |
366 | else | |
367 | return read_request_fixed_len(fd, req_len, out); | |
368 | } | |
369 | ||
370 | static void inflate_request(const char *prog_name, int out, int buffer_input, ssize_t req_len) | |
556cfa3b | 371 | { |
ef49a7a0 | 372 | git_zstream stream; |
6bc0cb51 | 373 | unsigned char *full_request = NULL; |
556cfa3b SP |
374 | unsigned char in_buf[8192]; |
375 | unsigned char out_buf[8192]; | |
376 | unsigned long cnt = 0; | |
6c213e86 MK |
377 | int req_len_defined = req_len >= 0; |
378 | size_t req_remaining_len = req_len; | |
556cfa3b SP |
379 | |
380 | memset(&stream, 0, sizeof(stream)); | |
5e86c1fb | 381 | git_inflate_init_gzip_only(&stream); |
556cfa3b SP |
382 | |
383 | while (1) { | |
6bc0cb51 JK |
384 | ssize_t n; |
385 | ||
386 | if (buffer_input) { | |
387 | if (full_request) | |
388 | n = 0; /* nothing left to read */ | |
389 | else | |
c79edf73 | 390 | n = read_request(0, &full_request, req_len); |
6bc0cb51 JK |
391 | stream.next_in = full_request; |
392 | } else { | |
6c213e86 MK |
393 | ssize_t buffer_len; |
394 | if (req_len_defined && req_remaining_len <= sizeof(in_buf)) | |
395 | buffer_len = req_remaining_len; | |
396 | else | |
397 | buffer_len = sizeof(in_buf); | |
398 | n = xread(0, in_buf, buffer_len); | |
6bc0cb51 | 399 | stream.next_in = in_buf; |
6c213e86 MK |
400 | if (req_len_defined && n > 0) |
401 | req_remaining_len -= n; | |
6bc0cb51 JK |
402 | } |
403 | ||
556cfa3b SP |
404 | if (n <= 0) |
405 | die("request ended in the middle of the gzip stream"); | |
556cfa3b SP |
406 | stream.avail_in = n; |
407 | ||
408 | while (0 < stream.avail_in) { | |
409 | int ret; | |
410 | ||
411 | stream.next_out = out_buf; | |
412 | stream.avail_out = sizeof(out_buf); | |
413 | ||
9e7e5ca3 | 414 | ret = git_inflate(&stream, Z_NO_FLUSH); |
556cfa3b SP |
415 | if (ret != Z_OK && ret != Z_STREAM_END) |
416 | die("zlib error inflating request, result %d", ret); | |
417 | ||
418 | n = stream.total_out - cnt; | |
6b1fae1d MK |
419 | write_to_child(out, out_buf, stream.total_out - cnt, prog_name); |
420 | cnt = stream.total_out; | |
556cfa3b SP |
421 | |
422 | if (ret == Z_STREAM_END) | |
423 | goto done; | |
424 | } | |
425 | } | |
426 | ||
427 | done: | |
9e7e5ca3 | 428 | git_inflate_end(&stream); |
556cfa3b | 429 | close(out); |
6bc0cb51 JK |
430 | free(full_request); |
431 | } | |
432 | ||
c79edf73 | 433 | static void copy_request(const char *prog_name, int out, ssize_t req_len) |
6bc0cb51 JK |
434 | { |
435 | unsigned char *buf; | |
c79edf73 | 436 | ssize_t n = read_request(0, &buf, req_len); |
6bc0cb51 JK |
437 | if (n < 0) |
438 | die_errno("error reading request body"); | |
6b1fae1d | 439 | write_to_child(out, buf, n, prog_name); |
6bc0cb51 JK |
440 | close(out); |
441 | free(buf); | |
556cfa3b SP |
442 | } |
443 | ||
6c213e86 MK |
444 | static void pipe_fixed_length(const char *prog_name, int out, size_t req_len) |
445 | { | |
446 | unsigned char buf[8192]; | |
447 | size_t remaining_len = req_len; | |
448 | ||
449 | while (remaining_len > 0) { | |
450 | size_t chunk_length = remaining_len > sizeof(buf) ? sizeof(buf) : remaining_len; | |
451 | ssize_t n = xread(0, buf, chunk_length); | |
452 | if (n < 0) | |
453 | die_errno("Reading request failed"); | |
454 | write_to_child(out, buf, n, prog_name); | |
455 | remaining_len -= n; | |
456 | } | |
457 | ||
458 | close(out); | |
459 | } | |
460 | ||
6bc0cb51 | 461 | static void run_service(const char **argv, int buffer_input) |
556cfa3b SP |
462 | { |
463 | const char *encoding = getenv("HTTP_CONTENT_ENCODING"); | |
464 | const char *user = getenv("REMOTE_USER"); | |
465 | const char *host = getenv("REMOTE_ADDR"); | |
556cfa3b | 466 | int gzipped_request = 0; |
d3180279 | 467 | struct child_process cld = CHILD_PROCESS_INIT; |
c79edf73 | 468 | ssize_t req_len = get_content_length(); |
556cfa3b | 469 | |
12144e8f | 470 | if (encoding && (!strcmp(encoding, "gzip") || !strcmp(encoding, "x-gzip"))) |
556cfa3b SP |
471 | gzipped_request = 1; |
472 | ||
473 | if (!user || !*user) | |
474 | user = "anonymous"; | |
475 | if (!host || !*host) | |
476 | host = "(none)"; | |
477 | ||
e32a4581 | 478 | if (!getenv("GIT_COMMITTER_NAME")) |
ef8d7ac4 | 479 | strvec_pushf(&cld.env_array, "GIT_COMMITTER_NAME=%s", user); |
e32a4581 | 480 | if (!getenv("GIT_COMMITTER_EMAIL")) |
ef8d7ac4 | 481 | strvec_pushf(&cld.env_array, |
f6d8942b | 482 | "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); |
556cfa3b | 483 | |
6def0ff8 | 484 | strvec_pushv(&cld.args, argv); |
6c213e86 | 485 | if (buffer_input || gzipped_request || req_len >= 0) |
556cfa3b SP |
486 | cld.in = -1; |
487 | cld.git_cmd = 1; | |
02818a98 MK |
488 | cld.clean_on_exit = 1; |
489 | cld.wait_after_clean = 1; | |
556cfa3b SP |
490 | if (start_command(&cld)) |
491 | exit(1); | |
492 | ||
493 | close(1); | |
494 | if (gzipped_request) | |
c79edf73 | 495 | inflate_request(argv[0], cld.in, buffer_input, req_len); |
6bc0cb51 | 496 | else if (buffer_input) |
c79edf73 | 497 | copy_request(argv[0], cld.in, req_len); |
6c213e86 MK |
498 | else if (req_len >= 0) |
499 | pipe_fixed_length(argv[0], cld.in, req_len); | |
556cfa3b SP |
500 | else |
501 | close(0); | |
502 | ||
503 | if (finish_command(&cld)) | |
504 | exit(1); | |
556cfa3b SP |
505 | } |
506 | ||
f72f5421 MH |
507 | static int show_text_ref(const char *name, const struct object_id *oid, |
508 | int flag, void *cb_data) | |
2f4038ab | 509 | { |
6130f86d | 510 | const char *name_nons = strip_namespace(name); |
2f4038ab | 511 | struct strbuf *buf = cb_data; |
109cd76d | 512 | struct object *o = parse_object(the_repository, oid); |
2f4038ab SP |
513 | if (!o) |
514 | return 0; | |
515 | ||
f72f5421 | 516 | strbuf_addf(buf, "%s\t%s\n", oid_to_hex(oid), name_nons); |
2f4038ab | 517 | if (o->type == OBJ_TAG) { |
a74093da | 518 | o = deref_tag(the_repository, o, name, 0); |
2f4038ab SP |
519 | if (!o) |
520 | return 0; | |
f2fd0760 | 521 | strbuf_addf(buf, "%s\t%s^{}\n", oid_to_hex(&o->oid), |
6130f86d | 522 | name_nons); |
2f4038ab SP |
523 | } |
524 | return 0; | |
525 | } | |
526 | ||
b36045c1 | 527 | static void get_info_refs(struct strbuf *hdr, char *arg) |
2f4038ab | 528 | { |
556cfa3b | 529 | const char *service_name = get_parameter("service"); |
2f4038ab SP |
530 | struct strbuf buf = STRBUF_INIT; |
531 | ||
b36045c1 | 532 | hdr_nocache(hdr); |
556cfa3b SP |
533 | |
534 | if (service_name) { | |
535 | const char *argv[] = {NULL /* service name */, | |
98e2d9d6 | 536 | "--http-backend-info-refs", |
556cfa3b | 537 | ".", NULL}; |
b36045c1 | 538 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
539 | |
540 | strbuf_addf(&buf, "application/x-git-%s-advertisement", | |
541 | svc->name); | |
b36045c1 EW |
542 | hdr_str(hdr, content_type, buf.buf); |
543 | end_headers(hdr); | |
556cfa3b | 544 | |
237ffedd BW |
545 | |
546 | if (determine_protocol_version_server() != protocol_v2) { | |
547 | packet_write_fmt(1, "# service=git-%s\n", svc->name); | |
548 | packet_flush(1); | |
549 | } | |
556cfa3b SP |
550 | |
551 | argv[0] = svc->name; | |
6bc0cb51 | 552 | run_service(argv, 0); |
556cfa3b SP |
553 | |
554 | } else { | |
b36045c1 | 555 | select_getanyfile(hdr); |
6130f86d | 556 | for_each_namespaced_ref(show_text_ref, &buf); |
b36045c1 | 557 | send_strbuf(hdr, "text/plain", &buf); |
556cfa3b | 558 | } |
2f4038ab SP |
559 | strbuf_release(&buf); |
560 | } | |
561 | ||
f72f5421 MH |
562 | static int show_head_ref(const char *refname, const struct object_id *oid, |
563 | int flag, void *cb_data) | |
6130f86d JK |
564 | { |
565 | struct strbuf *buf = cb_data; | |
566 | ||
567 | if (flag & REF_ISSYMREF) { | |
7695d118 RS |
568 | const char *target = resolve_ref_unsafe(refname, |
569 | RESOLVE_REF_READING, | |
744c040b | 570 | NULL, NULL); |
6130f86d | 571 | |
7fd12bfb MH |
572 | if (target) |
573 | strbuf_addf(buf, "ref: %s\n", strip_namespace(target)); | |
6130f86d | 574 | } else { |
f72f5421 | 575 | strbuf_addf(buf, "%s\n", oid_to_hex(oid)); |
6130f86d JK |
576 | } |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
b36045c1 | 581 | static void get_head(struct strbuf *hdr, char *arg) |
6130f86d JK |
582 | { |
583 | struct strbuf buf = STRBUF_INIT; | |
584 | ||
b36045c1 | 585 | select_getanyfile(hdr); |
6130f86d | 586 | head_ref_namespaced(show_head_ref, &buf); |
b36045c1 | 587 | send_strbuf(hdr, "text/plain", &buf); |
6130f86d JK |
588 | strbuf_release(&buf); |
589 | } | |
590 | ||
b36045c1 | 591 | static void get_info_packs(struct strbuf *hdr, char *arg) |
2f4038ab SP |
592 | { |
593 | size_t objdirlen = strlen(get_object_directory()); | |
594 | struct strbuf buf = STRBUF_INIT; | |
595 | struct packed_git *p; | |
596 | size_t cnt = 0; | |
597 | ||
b36045c1 | 598 | select_getanyfile(hdr); |
454ea2e4 | 599 | for (p = get_all_packs(the_repository); p; p = p->next) { |
2f4038ab SP |
600 | if (p->pack_local) |
601 | cnt++; | |
602 | } | |
603 | ||
604 | strbuf_grow(&buf, cnt * 53 + 2); | |
454ea2e4 | 605 | for (p = get_all_packs(the_repository); p; p = p->next) { |
2f4038ab SP |
606 | if (p->pack_local) |
607 | strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6); | |
608 | } | |
609 | strbuf_addch(&buf, '\n'); | |
610 | ||
b36045c1 EW |
611 | hdr_nocache(hdr); |
612 | send_strbuf(hdr, "text/plain; charset=utf-8", &buf); | |
2f4038ab SP |
613 | strbuf_release(&buf); |
614 | } | |
615 | ||
b36045c1 | 616 | static void check_content_type(struct strbuf *hdr, const char *accepted_type) |
556cfa3b SP |
617 | { |
618 | const char *actual_type = getenv("CONTENT_TYPE"); | |
619 | ||
620 | if (!actual_type) | |
621 | actual_type = ""; | |
622 | ||
623 | if (strcmp(actual_type, accepted_type)) { | |
b36045c1 EW |
624 | http_status(hdr, 415, "Unsupported Media Type"); |
625 | hdr_nocache(hdr); | |
626 | end_headers(hdr); | |
556cfa3b SP |
627 | format_write(1, |
628 | "Expected POST with Content-Type '%s'," | |
629 | " but received '%s' instead.\n", | |
630 | accepted_type, actual_type); | |
631 | exit(0); | |
632 | } | |
633 | } | |
634 | ||
b36045c1 | 635 | static void service_rpc(struct strbuf *hdr, char *service_name) |
556cfa3b SP |
636 | { |
637 | const char *argv[] = {NULL, "--stateless-rpc", ".", NULL}; | |
b36045c1 | 638 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
639 | struct strbuf buf = STRBUF_INIT; |
640 | ||
641 | strbuf_reset(&buf); | |
642 | strbuf_addf(&buf, "application/x-git-%s-request", svc->name); | |
b36045c1 | 643 | check_content_type(hdr, buf.buf); |
556cfa3b | 644 | |
b36045c1 | 645 | hdr_nocache(hdr); |
556cfa3b SP |
646 | |
647 | strbuf_reset(&buf); | |
648 | strbuf_addf(&buf, "application/x-git-%s-result", svc->name); | |
b36045c1 | 649 | hdr_str(hdr, content_type, buf.buf); |
556cfa3b | 650 | |
b36045c1 | 651 | end_headers(hdr); |
556cfa3b SP |
652 | |
653 | argv[0] = svc->name; | |
6bc0cb51 | 654 | run_service(argv, svc->buffer_input); |
556cfa3b SP |
655 | strbuf_release(&buf); |
656 | } | |
657 | ||
7253a023 | 658 | static int dead; |
2f4038ab SP |
659 | static NORETURN void die_webcgi(const char *err, va_list params) |
660 | { | |
7253a023 | 661 | if (dead <= 1) { |
b36045c1 | 662 | struct strbuf hdr = STRBUF_INIT; |
e081a7c3 | 663 | report_fn die_message_fn = get_die_message_routine(); |
b36045c1 | 664 | |
e081a7c3 | 665 | die_message_fn(err, params); |
2f4038ab | 666 | |
b36045c1 EW |
667 | http_status(&hdr, 500, "Internal Server Error"); |
668 | hdr_nocache(&hdr); | |
669 | end_headers(&hdr); | |
5856b5f5 SP |
670 | } |
671 | exit(0); /* we successfully reported a failure ;-) */ | |
2f4038ab SP |
672 | } |
673 | ||
7253a023 JK |
674 | static int die_webcgi_recursing(void) |
675 | { | |
676 | return dead++ > 1; | |
677 | } | |
678 | ||
917adc03 ML |
679 | static char* getdir(void) |
680 | { | |
681 | struct strbuf buf = STRBUF_INIT; | |
682 | char *pathinfo = getenv("PATH_INFO"); | |
683 | char *root = getenv("GIT_PROJECT_ROOT"); | |
684 | char *path = getenv("PATH_TRANSLATED"); | |
685 | ||
686 | if (root && *root) { | |
687 | if (!pathinfo || !*pathinfo) | |
688 | die("GIT_PROJECT_ROOT is set but PATH_INFO is not"); | |
34b6cb8b SP |
689 | if (daemon_avoid_alias(pathinfo)) |
690 | die("'%s': aliased", pathinfo); | |
cf688cc2 | 691 | end_url_with_slash(&buf, root); |
34b6cb8b SP |
692 | if (pathinfo[0] == '/') |
693 | pathinfo++; | |
917adc03 ML |
694 | strbuf_addstr(&buf, pathinfo); |
695 | return strbuf_detach(&buf, NULL); | |
696 | } else if (path && *path) { | |
697 | return xstrdup(path); | |
698 | } else | |
699 | die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server"); | |
700 | return NULL; | |
701 | } | |
702 | ||
2f4038ab SP |
703 | static struct service_cmd { |
704 | const char *method; | |
705 | const char *pattern; | |
b36045c1 | 706 | void (*imp)(struct strbuf *, char *); |
2f4038ab | 707 | } services[] = { |
6130f86d | 708 | {"GET", "/HEAD$", get_head}, |
2f4038ab SP |
709 | {"GET", "/info/refs$", get_info_refs}, |
710 | {"GET", "/objects/info/alternates$", get_text_file}, | |
711 | {"GET", "/objects/info/http-alternates$", get_text_file}, | |
712 | {"GET", "/objects/info/packs$", get_info_packs}, | |
713 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object}, | |
f786ae9f | 714 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{62}$", get_loose_object}, |
2f4038ab | 715 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file}, |
f786ae9f | 716 | {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.pack$", get_pack_file}, |
556cfa3b | 717 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file}, |
f786ae9f | 718 | {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.idx$", get_idx_file}, |
556cfa3b SP |
719 | |
720 | {"POST", "/git-upload-pack$", service_rpc}, | |
721 | {"POST", "/git-receive-pack$", service_rpc} | |
2f4038ab SP |
722 | }; |
723 | ||
b36045c1 EW |
724 | static int bad_request(struct strbuf *hdr, const struct service_cmd *c) |
725 | { | |
726 | const char *proto = getenv("SERVER_PROTOCOL"); | |
727 | ||
728 | if (proto && !strcmp(proto, "HTTP/1.1")) { | |
729 | http_status(hdr, 405, "Method Not Allowed"); | |
730 | hdr_str(hdr, "Allow", | |
731 | !strcmp(c->method, "GET") ? "GET, HEAD" : c->method); | |
732 | } else | |
733 | http_status(hdr, 400, "Bad Request"); | |
734 | hdr_nocache(hdr); | |
735 | end_headers(hdr); | |
736 | return 0; | |
737 | } | |
738 | ||
3f2e2297 | 739 | int cmd_main(int argc, const char **argv) |
2f4038ab SP |
740 | { |
741 | char *method = getenv("REQUEST_METHOD"); | |
ff6a37c9 | 742 | const char *proto_header; |
917adc03 | 743 | char *dir; |
2f4038ab SP |
744 | struct service_cmd *cmd = NULL; |
745 | char *cmd_arg = NULL; | |
746 | int i; | |
b36045c1 | 747 | struct strbuf hdr = STRBUF_INIT; |
2f4038ab | 748 | |
2f4038ab | 749 | set_die_routine(die_webcgi); |
7253a023 | 750 | set_die_is_recursing_routine(die_webcgi_recursing); |
2f4038ab SP |
751 | |
752 | if (!method) | |
753 | die("No REQUEST_METHOD from server"); | |
754 | if (!strcmp(method, "HEAD")) | |
755 | method = "GET"; | |
917adc03 | 756 | dir = getdir(); |
2f4038ab SP |
757 | |
758 | for (i = 0; i < ARRAY_SIZE(services); i++) { | |
759 | struct service_cmd *c = &services[i]; | |
760 | regex_t re; | |
761 | regmatch_t out[1]; | |
762 | ||
763 | if (regcomp(&re, c->pattern, REG_EXTENDED)) | |
764 | die("Bogus regex in service table: %s", c->pattern); | |
765 | if (!regexec(&re, dir, 1, out, 0)) { | |
48aec1b1 | 766 | size_t n; |
2f4038ab | 767 | |
b36045c1 EW |
768 | if (strcmp(method, c->method)) |
769 | return bad_request(&hdr, c); | |
2f4038ab SP |
770 | |
771 | cmd = c; | |
48aec1b1 | 772 | n = out[0].rm_eo - out[0].rm_so; |
5c0b13f8 | 773 | cmd_arg = xmemdupz(dir + out[0].rm_so + 1, n - 1); |
2f4038ab SP |
774 | dir[out[0].rm_so] = 0; |
775 | break; | |
776 | } | |
777 | regfree(&re); | |
778 | } | |
779 | ||
780 | if (!cmd) | |
b36045c1 | 781 | not_found(&hdr, "Request not supported: '%s'", dir); |
2f4038ab SP |
782 | |
783 | setup_path(); | |
784 | if (!enter_repo(dir, 0)) | |
b36045c1 | 785 | not_found(&hdr, "Not a git repository: '%s'", dir); |
8b2bd7cd TC |
786 | if (!getenv("GIT_HTTP_EXPORT_ALL") && |
787 | access("git-daemon-export-ok", F_OK) ) | |
b36045c1 | 788 | not_found(&hdr, "Repository not exported: '%s'", dir); |
2f4038ab | 789 | |
6881f0cc | 790 | http_config(); |
6bc0cb51 JK |
791 | max_request_buffer = git_env_ulong("GIT_HTTP_MAX_REQUEST_BUFFER", |
792 | max_request_buffer); | |
ff6a37c9 JK |
793 | proto_header = getenv("HTTP_GIT_PROTOCOL"); |
794 | if (proto_header) | |
795 | setenv(GIT_PROTOCOL_ENVIRONMENT, proto_header, 0); | |
6bc0cb51 | 796 | |
b36045c1 | 797 | cmd->imp(&hdr, cmd_arg); |
2f4038ab SP |
798 | return 0; |
799 | } |