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Commit | Line | Data |
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36bf1958 EN |
1 | #include "git-compat-util.h" |
2 | #include "alloc.h" | |
b2141fc1 | 3 | #include "config.h" |
a80d72db | 4 | #include "repository.h" |
2f4038ab SP |
5 | #include "refs.h" |
6 | #include "pkt-line.h" | |
7 | #include "object.h" | |
8 | #include "tag.h" | |
d807c4a0 | 9 | #include "exec-cmd.h" |
556cfa3b SP |
10 | #include "run-command.h" |
11 | #include "string-list.h" | |
638794cd | 12 | #include "url.h" |
dbbcd44f | 13 | #include "strvec.h" |
0abe14f6 | 14 | #include "packfile.h" |
a80d72db | 15 | #include "object-store.h" |
237ffedd | 16 | #include "protocol.h" |
88c7b4c3 | 17 | #include "date.h" |
2f4038ab SP |
18 | |
19 | static const char content_type[] = "Content-Type"; | |
20 | static const char content_length[] = "Content-Length"; | |
21 | static const char last_modified[] = "Last-Modified"; | |
5abb013b | 22 | static int getanyfile = 1; |
6bc0cb51 | 23 | static unsigned long max_request_buffer = 10 * 1024 * 1024; |
2f4038ab | 24 | |
556cfa3b SP |
25 | static struct string_list *query_params; |
26 | ||
27 | struct rpc_service { | |
28 | const char *name; | |
29 | const char *config_name; | |
6bc0cb51 | 30 | unsigned buffer_input : 1; |
556cfa3b SP |
31 | signed enabled : 2; |
32 | }; | |
33 | ||
34 | static struct rpc_service rpc_service[] = { | |
6bc0cb51 JK |
35 | { "upload-pack", "uploadpack", 1, 1 }, |
36 | { "receive-pack", "receivepack", 0, -1 }, | |
556cfa3b SP |
37 | }; |
38 | ||
556cfa3b SP |
39 | static struct string_list *get_parameters(void) |
40 | { | |
41 | if (!query_params) { | |
42 | const char *query = getenv("QUERY_STRING"); | |
43 | ||
ca56dadb | 44 | CALLOC_ARRAY(query_params, 1); |
556cfa3b | 45 | while (query && *query) { |
638794cd JK |
46 | char *name = url_decode_parameter_name(&query); |
47 | char *value = url_decode_parameter_value(&query); | |
556cfa3b SP |
48 | struct string_list_item *i; |
49 | ||
e8c8b713 | 50 | i = string_list_lookup(query_params, name); |
556cfa3b | 51 | if (!i) |
78a395d3 | 52 | i = string_list_insert(query_params, name); |
556cfa3b SP |
53 | else |
54 | free(i->util); | |
55 | i->util = value; | |
56 | } | |
57 | } | |
58 | return query_params; | |
59 | } | |
60 | ||
61 | static const char *get_parameter(const char *name) | |
62 | { | |
63 | struct string_list_item *i; | |
e8c8b713 | 64 | i = string_list_lookup(get_parameters(), name); |
556cfa3b SP |
65 | return i ? i->util : NULL; |
66 | } | |
67 | ||
35487017 | 68 | __attribute__((format (printf, 2, 3))) |
2f4038ab SP |
69 | static void format_write(int fd, const char *fmt, ...) |
70 | { | |
71 | static char buffer[1024]; | |
72 | ||
73 | va_list args; | |
74 | unsigned n; | |
75 | ||
76 | va_start(args, fmt); | |
77 | n = vsnprintf(buffer, sizeof(buffer), fmt, args); | |
78 | va_end(args); | |
79 | if (n >= sizeof(buffer)) | |
80 | die("protocol error: impossibly long line"); | |
81 | ||
cdf4fb8e | 82 | write_or_die(fd, buffer, n); |
2f4038ab SP |
83 | } |
84 | ||
b36045c1 | 85 | static void http_status(struct strbuf *hdr, unsigned code, const char *msg) |
2f4038ab | 86 | { |
b36045c1 | 87 | strbuf_addf(hdr, "Status: %u %s\r\n", code, msg); |
2f4038ab SP |
88 | } |
89 | ||
b36045c1 | 90 | static void hdr_str(struct strbuf *hdr, const char *name, const char *value) |
2f4038ab | 91 | { |
b36045c1 | 92 | strbuf_addf(hdr, "%s: %s\r\n", name, value); |
2f4038ab SP |
93 | } |
94 | ||
b36045c1 | 95 | static void hdr_int(struct strbuf *hdr, const char *name, uintmax_t value) |
2f4038ab | 96 | { |
b36045c1 | 97 | strbuf_addf(hdr, "%s: %" PRIuMAX "\r\n", name, value); |
2f4038ab SP |
98 | } |
99 | ||
dddbad72 | 100 | static void hdr_date(struct strbuf *hdr, const char *name, timestamp_t when) |
2f4038ab | 101 | { |
a5481a6c | 102 | const char *value = show_date(when, 0, DATE_MODE(RFC2822)); |
b36045c1 | 103 | hdr_str(hdr, name, value); |
2f4038ab SP |
104 | } |
105 | ||
b36045c1 | 106 | static void hdr_nocache(struct strbuf *hdr) |
2f4038ab | 107 | { |
b36045c1 EW |
108 | hdr_str(hdr, "Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); |
109 | hdr_str(hdr, "Pragma", "no-cache"); | |
110 | hdr_str(hdr, "Cache-Control", "no-cache, max-age=0, must-revalidate"); | |
2f4038ab SP |
111 | } |
112 | ||
b36045c1 | 113 | static void hdr_cache_forever(struct strbuf *hdr) |
2f4038ab | 114 | { |
dddbad72 | 115 | timestamp_t now = time(NULL); |
b36045c1 EW |
116 | hdr_date(hdr, "Date", now); |
117 | hdr_date(hdr, "Expires", now + 31536000); | |
118 | hdr_str(hdr, "Cache-Control", "public, max-age=31536000"); | |
2f4038ab SP |
119 | } |
120 | ||
b36045c1 | 121 | static void end_headers(struct strbuf *hdr) |
2f4038ab | 122 | { |
b36045c1 EW |
123 | strbuf_add(hdr, "\r\n", 2); |
124 | write_or_die(1, hdr->buf, hdr->len); | |
125 | strbuf_release(hdr); | |
2f4038ab SP |
126 | } |
127 | ||
b36045c1 EW |
128 | __attribute__((format (printf, 2, 3))) |
129 | static NORETURN void not_found(struct strbuf *hdr, const char *err, ...) | |
2f4038ab SP |
130 | { |
131 | va_list params; | |
132 | ||
b36045c1 EW |
133 | http_status(hdr, 404, "Not Found"); |
134 | hdr_nocache(hdr); | |
135 | end_headers(hdr); | |
2f4038ab SP |
136 | |
137 | va_start(params, err); | |
138 | if (err && *err) | |
139 | vfprintf(stderr, err, params); | |
140 | va_end(params); | |
141 | exit(0); | |
142 | } | |
143 | ||
b36045c1 EW |
144 | __attribute__((format (printf, 2, 3))) |
145 | static NORETURN void forbidden(struct strbuf *hdr, const char *err, ...) | |
556cfa3b SP |
146 | { |
147 | va_list params; | |
148 | ||
b36045c1 EW |
149 | http_status(hdr, 403, "Forbidden"); |
150 | hdr_nocache(hdr); | |
151 | end_headers(hdr); | |
556cfa3b SP |
152 | |
153 | va_start(params, err); | |
154 | if (err && *err) | |
155 | vfprintf(stderr, err, params); | |
156 | va_end(params); | |
157 | exit(0); | |
158 | } | |
159 | ||
b36045c1 | 160 | static void select_getanyfile(struct strbuf *hdr) |
5abb013b SP |
161 | { |
162 | if (!getanyfile) | |
b36045c1 | 163 | forbidden(hdr, "Unsupported service: getanyfile"); |
5abb013b SP |
164 | } |
165 | ||
b36045c1 EW |
166 | static void send_strbuf(struct strbuf *hdr, |
167 | const char *type, struct strbuf *buf) | |
2f4038ab | 168 | { |
b36045c1 EW |
169 | hdr_int(hdr, content_length, buf->len); |
170 | hdr_str(hdr, content_type, type); | |
171 | end_headers(hdr); | |
cdf4fb8e | 172 | write_or_die(1, buf->buf, buf->len); |
2f4038ab SP |
173 | } |
174 | ||
b36045c1 EW |
175 | static void send_local_file(struct strbuf *hdr, const char *the_type, |
176 | const char *name) | |
2f4038ab | 177 | { |
fcd12db6 | 178 | char *p = git_pathdup("%s", name); |
2f4038ab SP |
179 | size_t buf_alloc = 8192; |
180 | char *buf = xmalloc(buf_alloc); | |
181 | int fd; | |
182 | struct stat sb; | |
2f4038ab SP |
183 | |
184 | fd = open(p, O_RDONLY); | |
185 | if (fd < 0) | |
b36045c1 | 186 | not_found(hdr, "Cannot open '%s': %s", p, strerror(errno)); |
2f4038ab SP |
187 | if (fstat(fd, &sb) < 0) |
188 | die_errno("Cannot stat '%s'", p); | |
189 | ||
b36045c1 EW |
190 | hdr_int(hdr, content_length, sb.st_size); |
191 | hdr_str(hdr, content_type, the_type); | |
192 | hdr_date(hdr, last_modified, sb.st_mtime); | |
193 | end_headers(hdr); | |
2f4038ab | 194 | |
4a5328d6 | 195 | for (;;) { |
2f4038ab SP |
196 | ssize_t n = xread(fd, buf, buf_alloc); |
197 | if (n < 0) | |
198 | die_errno("Cannot read '%s'", p); | |
199 | if (!n) | |
200 | break; | |
cdf4fb8e | 201 | write_or_die(1, buf, n); |
2f4038ab SP |
202 | } |
203 | close(fd); | |
204 | free(buf); | |
fcd12db6 | 205 | free(p); |
2f4038ab SP |
206 | } |
207 | ||
b36045c1 | 208 | static void get_text_file(struct strbuf *hdr, char *name) |
2f4038ab | 209 | { |
b36045c1 EW |
210 | select_getanyfile(hdr); |
211 | hdr_nocache(hdr); | |
212 | send_local_file(hdr, "text/plain", name); | |
2f4038ab SP |
213 | } |
214 | ||
b36045c1 | 215 | static void get_loose_object(struct strbuf *hdr, char *name) |
2f4038ab | 216 | { |
b36045c1 EW |
217 | select_getanyfile(hdr); |
218 | hdr_cache_forever(hdr); | |
219 | send_local_file(hdr, "application/x-git-loose-object", name); | |
2f4038ab SP |
220 | } |
221 | ||
b36045c1 | 222 | static void get_pack_file(struct strbuf *hdr, char *name) |
2f4038ab | 223 | { |
b36045c1 EW |
224 | select_getanyfile(hdr); |
225 | hdr_cache_forever(hdr); | |
226 | send_local_file(hdr, "application/x-git-packed-objects", name); | |
2f4038ab SP |
227 | } |
228 | ||
b36045c1 | 229 | static void get_idx_file(struct strbuf *hdr, char *name) |
2f4038ab | 230 | { |
b36045c1 EW |
231 | select_getanyfile(hdr); |
232 | hdr_cache_forever(hdr); | |
233 | send_local_file(hdr, "application/x-git-packed-objects-toc", name); | |
2f4038ab SP |
234 | } |
235 | ||
6881f0cc | 236 | static void http_config(void) |
556cfa3b | 237 | { |
6881f0cc TA |
238 | int i, value = 0; |
239 | struct strbuf var = STRBUF_INIT; | |
ae021d87 | 240 | |
6881f0cc | 241 | git_config_get_bool("http.getanyfile", &getanyfile); |
6bc0cb51 | 242 | git_config_get_ulong("http.maxrequestbuffer", &max_request_buffer); |
556cfa3b | 243 | |
6881f0cc TA |
244 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
245 | struct rpc_service *svc = &rpc_service[i]; | |
246 | strbuf_addf(&var, "http.%s", svc->config_name); | |
247 | if (!git_config_get_bool(var.buf, &value)) | |
248 | svc->enabled = value; | |
249 | strbuf_reset(&var); | |
5abb013b SP |
250 | } |
251 | ||
6881f0cc | 252 | strbuf_release(&var); |
556cfa3b SP |
253 | } |
254 | ||
b36045c1 | 255 | static struct rpc_service *select_service(struct strbuf *hdr, const char *name) |
556cfa3b | 256 | { |
ae021d87 | 257 | const char *svc_name; |
556cfa3b SP |
258 | struct rpc_service *svc = NULL; |
259 | int i; | |
260 | ||
ae021d87 | 261 | if (!skip_prefix(name, "git-", &svc_name)) |
b36045c1 | 262 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b SP |
263 | |
264 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { | |
265 | struct rpc_service *s = &rpc_service[i]; | |
ae021d87 | 266 | if (!strcmp(s->name, svc_name)) { |
556cfa3b SP |
267 | svc = s; |
268 | break; | |
269 | } | |
270 | } | |
271 | ||
272 | if (!svc) | |
b36045c1 | 273 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b | 274 | |
556cfa3b SP |
275 | if (svc->enabled < 0) { |
276 | const char *user = getenv("REMOTE_USER"); | |
277 | svc->enabled = (user && *user) ? 1 : 0; | |
278 | } | |
279 | if (!svc->enabled) | |
b36045c1 | 280 | forbidden(hdr, "Service not enabled: '%s'", svc->name); |
556cfa3b SP |
281 | return svc; |
282 | } | |
283 | ||
6b1fae1d MK |
284 | static void write_to_child(int out, const unsigned char *buf, ssize_t len, const char *prog_name) |
285 | { | |
286 | if (write_in_full(out, buf, len) < 0) | |
287 | die("unable to write to '%s'", prog_name); | |
288 | } | |
289 | ||
6bc0cb51 JK |
290 | /* |
291 | * This is basically strbuf_read(), except that if we | |
292 | * hit max_request_buffer we die (we'd rather reject a | |
293 | * maliciously large request than chew up infinite memory). | |
294 | */ | |
c79edf73 | 295 | static ssize_t read_request_eof(int fd, unsigned char **out) |
6bc0cb51 JK |
296 | { |
297 | size_t len = 0, alloc = 8192; | |
298 | unsigned char *buf = xmalloc(alloc); | |
299 | ||
300 | if (max_request_buffer < alloc) | |
301 | max_request_buffer = alloc; | |
302 | ||
303 | while (1) { | |
304 | ssize_t cnt; | |
305 | ||
306 | cnt = read_in_full(fd, buf + len, alloc - len); | |
307 | if (cnt < 0) { | |
308 | free(buf); | |
309 | return -1; | |
310 | } | |
311 | ||
312 | /* partial read from read_in_full means we hit EOF */ | |
313 | len += cnt; | |
314 | if (len < alloc) { | |
315 | *out = buf; | |
316 | return len; | |
317 | } | |
318 | ||
319 | /* otherwise, grow and try again (if we can) */ | |
320 | if (alloc == max_request_buffer) | |
321 | die("request was larger than our maximum size (%lu);" | |
322 | " try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
323 | max_request_buffer); | |
324 | ||
325 | alloc = alloc_nr(alloc); | |
326 | if (alloc > max_request_buffer) | |
327 | alloc = max_request_buffer; | |
328 | REALLOC_ARRAY(buf, alloc); | |
329 | } | |
330 | } | |
331 | ||
c79edf73 MK |
332 | static ssize_t read_request_fixed_len(int fd, ssize_t req_len, unsigned char **out) |
333 | { | |
334 | unsigned char *buf = NULL; | |
335 | ssize_t cnt = 0; | |
336 | ||
337 | if (max_request_buffer < req_len) { | |
338 | die("request was larger than our maximum size (%lu): " | |
339 | "%" PRIuMAX "; try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
340 | max_request_buffer, (uintmax_t)req_len); | |
341 | } | |
342 | ||
343 | buf = xmalloc(req_len); | |
344 | cnt = read_in_full(fd, buf, req_len); | |
345 | if (cnt < 0) { | |
346 | free(buf); | |
347 | return -1; | |
348 | } | |
349 | *out = buf; | |
350 | return cnt; | |
351 | } | |
352 | ||
353 | static ssize_t get_content_length(void) | |
354 | { | |
355 | ssize_t val = -1; | |
356 | const char *str = getenv("CONTENT_LENGTH"); | |
357 | ||
574c513e | 358 | if (str && *str && !git_parse_ssize_t(str, &val)) |
c79edf73 MK |
359 | die("failed to parse CONTENT_LENGTH: %s", str); |
360 | return val; | |
361 | } | |
362 | ||
363 | static ssize_t read_request(int fd, unsigned char **out, ssize_t req_len) | |
364 | { | |
365 | if (req_len < 0) | |
366 | return read_request_eof(fd, out); | |
367 | else | |
368 | return read_request_fixed_len(fd, req_len, out); | |
369 | } | |
370 | ||
371 | static void inflate_request(const char *prog_name, int out, int buffer_input, ssize_t req_len) | |
556cfa3b | 372 | { |
ef49a7a0 | 373 | git_zstream stream; |
6bc0cb51 | 374 | unsigned char *full_request = NULL; |
556cfa3b SP |
375 | unsigned char in_buf[8192]; |
376 | unsigned char out_buf[8192]; | |
377 | unsigned long cnt = 0; | |
6c213e86 MK |
378 | int req_len_defined = req_len >= 0; |
379 | size_t req_remaining_len = req_len; | |
556cfa3b SP |
380 | |
381 | memset(&stream, 0, sizeof(stream)); | |
5e86c1fb | 382 | git_inflate_init_gzip_only(&stream); |
556cfa3b SP |
383 | |
384 | while (1) { | |
6bc0cb51 JK |
385 | ssize_t n; |
386 | ||
387 | if (buffer_input) { | |
388 | if (full_request) | |
389 | n = 0; /* nothing left to read */ | |
390 | else | |
c79edf73 | 391 | n = read_request(0, &full_request, req_len); |
6bc0cb51 JK |
392 | stream.next_in = full_request; |
393 | } else { | |
6c213e86 MK |
394 | ssize_t buffer_len; |
395 | if (req_len_defined && req_remaining_len <= sizeof(in_buf)) | |
396 | buffer_len = req_remaining_len; | |
397 | else | |
398 | buffer_len = sizeof(in_buf); | |
399 | n = xread(0, in_buf, buffer_len); | |
6bc0cb51 | 400 | stream.next_in = in_buf; |
6c213e86 MK |
401 | if (req_len_defined && n > 0) |
402 | req_remaining_len -= n; | |
6bc0cb51 JK |
403 | } |
404 | ||
556cfa3b SP |
405 | if (n <= 0) |
406 | die("request ended in the middle of the gzip stream"); | |
556cfa3b SP |
407 | stream.avail_in = n; |
408 | ||
409 | while (0 < stream.avail_in) { | |
410 | int ret; | |
411 | ||
412 | stream.next_out = out_buf; | |
413 | stream.avail_out = sizeof(out_buf); | |
414 | ||
9e7e5ca3 | 415 | ret = git_inflate(&stream, Z_NO_FLUSH); |
556cfa3b SP |
416 | if (ret != Z_OK && ret != Z_STREAM_END) |
417 | die("zlib error inflating request, result %d", ret); | |
418 | ||
419 | n = stream.total_out - cnt; | |
6b1fae1d MK |
420 | write_to_child(out, out_buf, stream.total_out - cnt, prog_name); |
421 | cnt = stream.total_out; | |
556cfa3b SP |
422 | |
423 | if (ret == Z_STREAM_END) | |
424 | goto done; | |
425 | } | |
426 | } | |
427 | ||
428 | done: | |
9e7e5ca3 | 429 | git_inflate_end(&stream); |
556cfa3b | 430 | close(out); |
6bc0cb51 JK |
431 | free(full_request); |
432 | } | |
433 | ||
c79edf73 | 434 | static void copy_request(const char *prog_name, int out, ssize_t req_len) |
6bc0cb51 JK |
435 | { |
436 | unsigned char *buf; | |
c79edf73 | 437 | ssize_t n = read_request(0, &buf, req_len); |
6bc0cb51 JK |
438 | if (n < 0) |
439 | die_errno("error reading request body"); | |
6b1fae1d | 440 | write_to_child(out, buf, n, prog_name); |
6bc0cb51 JK |
441 | close(out); |
442 | free(buf); | |
556cfa3b SP |
443 | } |
444 | ||
6c213e86 MK |
445 | static void pipe_fixed_length(const char *prog_name, int out, size_t req_len) |
446 | { | |
447 | unsigned char buf[8192]; | |
448 | size_t remaining_len = req_len; | |
449 | ||
450 | while (remaining_len > 0) { | |
451 | size_t chunk_length = remaining_len > sizeof(buf) ? sizeof(buf) : remaining_len; | |
452 | ssize_t n = xread(0, buf, chunk_length); | |
453 | if (n < 0) | |
454 | die_errno("Reading request failed"); | |
455 | write_to_child(out, buf, n, prog_name); | |
456 | remaining_len -= n; | |
457 | } | |
458 | ||
459 | close(out); | |
460 | } | |
461 | ||
6bc0cb51 | 462 | static void run_service(const char **argv, int buffer_input) |
556cfa3b SP |
463 | { |
464 | const char *encoding = getenv("HTTP_CONTENT_ENCODING"); | |
465 | const char *user = getenv("REMOTE_USER"); | |
466 | const char *host = getenv("REMOTE_ADDR"); | |
556cfa3b | 467 | int gzipped_request = 0; |
d3180279 | 468 | struct child_process cld = CHILD_PROCESS_INIT; |
c79edf73 | 469 | ssize_t req_len = get_content_length(); |
556cfa3b | 470 | |
12144e8f | 471 | if (encoding && (!strcmp(encoding, "gzip") || !strcmp(encoding, "x-gzip"))) |
556cfa3b SP |
472 | gzipped_request = 1; |
473 | ||
474 | if (!user || !*user) | |
475 | user = "anonymous"; | |
476 | if (!host || !*host) | |
477 | host = "(none)"; | |
478 | ||
e32a4581 | 479 | if (!getenv("GIT_COMMITTER_NAME")) |
29fda24d | 480 | strvec_pushf(&cld.env, "GIT_COMMITTER_NAME=%s", user); |
e32a4581 | 481 | if (!getenv("GIT_COMMITTER_EMAIL")) |
29fda24d | 482 | strvec_pushf(&cld.env, |
f6d8942b | 483 | "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); |
556cfa3b | 484 | |
6def0ff8 | 485 | strvec_pushv(&cld.args, argv); |
6c213e86 | 486 | if (buffer_input || gzipped_request || req_len >= 0) |
556cfa3b SP |
487 | cld.in = -1; |
488 | cld.git_cmd = 1; | |
02818a98 MK |
489 | cld.clean_on_exit = 1; |
490 | cld.wait_after_clean = 1; | |
556cfa3b SP |
491 | if (start_command(&cld)) |
492 | exit(1); | |
493 | ||
494 | close(1); | |
495 | if (gzipped_request) | |
c79edf73 | 496 | inflate_request(argv[0], cld.in, buffer_input, req_len); |
6bc0cb51 | 497 | else if (buffer_input) |
c79edf73 | 498 | copy_request(argv[0], cld.in, req_len); |
6c213e86 MK |
499 | else if (req_len >= 0) |
500 | pipe_fixed_length(argv[0], cld.in, req_len); | |
556cfa3b SP |
501 | else |
502 | close(0); | |
503 | ||
504 | if (finish_command(&cld)) | |
505 | exit(1); | |
556cfa3b SP |
506 | } |
507 | ||
f72f5421 | 508 | static int show_text_ref(const char *name, const struct object_id *oid, |
5cf88fd8 | 509 | int flag UNUSED, void *cb_data) |
2f4038ab | 510 | { |
6130f86d | 511 | const char *name_nons = strip_namespace(name); |
2f4038ab | 512 | struct strbuf *buf = cb_data; |
109cd76d | 513 | struct object *o = parse_object(the_repository, oid); |
2f4038ab SP |
514 | if (!o) |
515 | return 0; | |
516 | ||
f72f5421 | 517 | strbuf_addf(buf, "%s\t%s\n", oid_to_hex(oid), name_nons); |
2f4038ab | 518 | if (o->type == OBJ_TAG) { |
a74093da | 519 | o = deref_tag(the_repository, o, name, 0); |
2f4038ab SP |
520 | if (!o) |
521 | return 0; | |
f2fd0760 | 522 | strbuf_addf(buf, "%s\t%s^{}\n", oid_to_hex(&o->oid), |
6130f86d | 523 | name_nons); |
2f4038ab SP |
524 | } |
525 | return 0; | |
526 | } | |
527 | ||
b36045c1 | 528 | static void get_info_refs(struct strbuf *hdr, char *arg) |
2f4038ab | 529 | { |
556cfa3b | 530 | const char *service_name = get_parameter("service"); |
2f4038ab SP |
531 | struct strbuf buf = STRBUF_INIT; |
532 | ||
b36045c1 | 533 | hdr_nocache(hdr); |
556cfa3b SP |
534 | |
535 | if (service_name) { | |
536 | const char *argv[] = {NULL /* service name */, | |
98e2d9d6 | 537 | "--http-backend-info-refs", |
556cfa3b | 538 | ".", NULL}; |
b36045c1 | 539 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
540 | |
541 | strbuf_addf(&buf, "application/x-git-%s-advertisement", | |
542 | svc->name); | |
b36045c1 EW |
543 | hdr_str(hdr, content_type, buf.buf); |
544 | end_headers(hdr); | |
556cfa3b | 545 | |
237ffedd BW |
546 | |
547 | if (determine_protocol_version_server() != protocol_v2) { | |
548 | packet_write_fmt(1, "# service=git-%s\n", svc->name); | |
549 | packet_flush(1); | |
550 | } | |
556cfa3b SP |
551 | |
552 | argv[0] = svc->name; | |
6bc0cb51 | 553 | run_service(argv, 0); |
556cfa3b SP |
554 | |
555 | } else { | |
b36045c1 | 556 | select_getanyfile(hdr); |
6130f86d | 557 | for_each_namespaced_ref(show_text_ref, &buf); |
b36045c1 | 558 | send_strbuf(hdr, "text/plain", &buf); |
556cfa3b | 559 | } |
2f4038ab SP |
560 | strbuf_release(&buf); |
561 | } | |
562 | ||
f72f5421 MH |
563 | static int show_head_ref(const char *refname, const struct object_id *oid, |
564 | int flag, void *cb_data) | |
6130f86d JK |
565 | { |
566 | struct strbuf *buf = cb_data; | |
567 | ||
568 | if (flag & REF_ISSYMREF) { | |
7695d118 RS |
569 | const char *target = resolve_ref_unsafe(refname, |
570 | RESOLVE_REF_READING, | |
744c040b | 571 | NULL, NULL); |
6130f86d | 572 | |
7fd12bfb MH |
573 | if (target) |
574 | strbuf_addf(buf, "ref: %s\n", strip_namespace(target)); | |
6130f86d | 575 | } else { |
f72f5421 | 576 | strbuf_addf(buf, "%s\n", oid_to_hex(oid)); |
6130f86d JK |
577 | } |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
b36045c1 | 582 | static void get_head(struct strbuf *hdr, char *arg) |
6130f86d JK |
583 | { |
584 | struct strbuf buf = STRBUF_INIT; | |
585 | ||
b36045c1 | 586 | select_getanyfile(hdr); |
6130f86d | 587 | head_ref_namespaced(show_head_ref, &buf); |
b36045c1 | 588 | send_strbuf(hdr, "text/plain", &buf); |
6130f86d JK |
589 | strbuf_release(&buf); |
590 | } | |
591 | ||
b36045c1 | 592 | static void get_info_packs(struct strbuf *hdr, char *arg) |
2f4038ab SP |
593 | { |
594 | size_t objdirlen = strlen(get_object_directory()); | |
595 | struct strbuf buf = STRBUF_INIT; | |
596 | struct packed_git *p; | |
597 | size_t cnt = 0; | |
598 | ||
b36045c1 | 599 | select_getanyfile(hdr); |
454ea2e4 | 600 | for (p = get_all_packs(the_repository); p; p = p->next) { |
2f4038ab SP |
601 | if (p->pack_local) |
602 | cnt++; | |
603 | } | |
604 | ||
605 | strbuf_grow(&buf, cnt * 53 + 2); | |
454ea2e4 | 606 | for (p = get_all_packs(the_repository); p; p = p->next) { |
2f4038ab SP |
607 | if (p->pack_local) |
608 | strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6); | |
609 | } | |
610 | strbuf_addch(&buf, '\n'); | |
611 | ||
b36045c1 EW |
612 | hdr_nocache(hdr); |
613 | send_strbuf(hdr, "text/plain; charset=utf-8", &buf); | |
2f4038ab SP |
614 | strbuf_release(&buf); |
615 | } | |
616 | ||
b36045c1 | 617 | static void check_content_type(struct strbuf *hdr, const char *accepted_type) |
556cfa3b SP |
618 | { |
619 | const char *actual_type = getenv("CONTENT_TYPE"); | |
620 | ||
621 | if (!actual_type) | |
622 | actual_type = ""; | |
623 | ||
624 | if (strcmp(actual_type, accepted_type)) { | |
b36045c1 EW |
625 | http_status(hdr, 415, "Unsupported Media Type"); |
626 | hdr_nocache(hdr); | |
627 | end_headers(hdr); | |
556cfa3b SP |
628 | format_write(1, |
629 | "Expected POST with Content-Type '%s'," | |
630 | " but received '%s' instead.\n", | |
631 | accepted_type, actual_type); | |
632 | exit(0); | |
633 | } | |
634 | } | |
635 | ||
b36045c1 | 636 | static void service_rpc(struct strbuf *hdr, char *service_name) |
556cfa3b SP |
637 | { |
638 | const char *argv[] = {NULL, "--stateless-rpc", ".", NULL}; | |
b36045c1 | 639 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
640 | struct strbuf buf = STRBUF_INIT; |
641 | ||
642 | strbuf_reset(&buf); | |
643 | strbuf_addf(&buf, "application/x-git-%s-request", svc->name); | |
b36045c1 | 644 | check_content_type(hdr, buf.buf); |
556cfa3b | 645 | |
b36045c1 | 646 | hdr_nocache(hdr); |
556cfa3b SP |
647 | |
648 | strbuf_reset(&buf); | |
649 | strbuf_addf(&buf, "application/x-git-%s-result", svc->name); | |
b36045c1 | 650 | hdr_str(hdr, content_type, buf.buf); |
556cfa3b | 651 | |
b36045c1 | 652 | end_headers(hdr); |
556cfa3b SP |
653 | |
654 | argv[0] = svc->name; | |
6bc0cb51 | 655 | run_service(argv, svc->buffer_input); |
556cfa3b SP |
656 | strbuf_release(&buf); |
657 | } | |
658 | ||
7253a023 | 659 | static int dead; |
2f4038ab SP |
660 | static NORETURN void die_webcgi(const char *err, va_list params) |
661 | { | |
7253a023 | 662 | if (dead <= 1) { |
b36045c1 | 663 | struct strbuf hdr = STRBUF_INIT; |
e081a7c3 | 664 | report_fn die_message_fn = get_die_message_routine(); |
b36045c1 | 665 | |
e081a7c3 | 666 | die_message_fn(err, params); |
2f4038ab | 667 | |
b36045c1 EW |
668 | http_status(&hdr, 500, "Internal Server Error"); |
669 | hdr_nocache(&hdr); | |
670 | end_headers(&hdr); | |
5856b5f5 SP |
671 | } |
672 | exit(0); /* we successfully reported a failure ;-) */ | |
2f4038ab SP |
673 | } |
674 | ||
7253a023 JK |
675 | static int die_webcgi_recursing(void) |
676 | { | |
677 | return dead++ > 1; | |
678 | } | |
679 | ||
917adc03 ML |
680 | static char* getdir(void) |
681 | { | |
682 | struct strbuf buf = STRBUF_INIT; | |
683 | char *pathinfo = getenv("PATH_INFO"); | |
684 | char *root = getenv("GIT_PROJECT_ROOT"); | |
685 | char *path = getenv("PATH_TRANSLATED"); | |
686 | ||
687 | if (root && *root) { | |
688 | if (!pathinfo || !*pathinfo) | |
689 | die("GIT_PROJECT_ROOT is set but PATH_INFO is not"); | |
34b6cb8b SP |
690 | if (daemon_avoid_alias(pathinfo)) |
691 | die("'%s': aliased", pathinfo); | |
cf688cc2 | 692 | end_url_with_slash(&buf, root); |
34b6cb8b SP |
693 | if (pathinfo[0] == '/') |
694 | pathinfo++; | |
917adc03 ML |
695 | strbuf_addstr(&buf, pathinfo); |
696 | return strbuf_detach(&buf, NULL); | |
697 | } else if (path && *path) { | |
698 | return xstrdup(path); | |
699 | } else | |
700 | die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server"); | |
701 | return NULL; | |
702 | } | |
703 | ||
2f4038ab SP |
704 | static struct service_cmd { |
705 | const char *method; | |
706 | const char *pattern; | |
b36045c1 | 707 | void (*imp)(struct strbuf *, char *); |
2f4038ab | 708 | } services[] = { |
6130f86d | 709 | {"GET", "/HEAD$", get_head}, |
2f4038ab SP |
710 | {"GET", "/info/refs$", get_info_refs}, |
711 | {"GET", "/objects/info/alternates$", get_text_file}, | |
712 | {"GET", "/objects/info/http-alternates$", get_text_file}, | |
713 | {"GET", "/objects/info/packs$", get_info_packs}, | |
714 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object}, | |
f786ae9f | 715 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{62}$", get_loose_object}, |
2f4038ab | 716 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file}, |
f786ae9f | 717 | {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.pack$", get_pack_file}, |
556cfa3b | 718 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file}, |
f786ae9f | 719 | {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.idx$", get_idx_file}, |
556cfa3b SP |
720 | |
721 | {"POST", "/git-upload-pack$", service_rpc}, | |
722 | {"POST", "/git-receive-pack$", service_rpc} | |
2f4038ab SP |
723 | }; |
724 | ||
b36045c1 EW |
725 | static int bad_request(struct strbuf *hdr, const struct service_cmd *c) |
726 | { | |
727 | const char *proto = getenv("SERVER_PROTOCOL"); | |
728 | ||
729 | if (proto && !strcmp(proto, "HTTP/1.1")) { | |
730 | http_status(hdr, 405, "Method Not Allowed"); | |
731 | hdr_str(hdr, "Allow", | |
732 | !strcmp(c->method, "GET") ? "GET, HEAD" : c->method); | |
733 | } else | |
734 | http_status(hdr, 400, "Bad Request"); | |
735 | hdr_nocache(hdr); | |
736 | end_headers(hdr); | |
737 | return 0; | |
738 | } | |
739 | ||
3f2e2297 | 740 | int cmd_main(int argc, const char **argv) |
2f4038ab SP |
741 | { |
742 | char *method = getenv("REQUEST_METHOD"); | |
ff6a37c9 | 743 | const char *proto_header; |
917adc03 | 744 | char *dir; |
2f4038ab SP |
745 | struct service_cmd *cmd = NULL; |
746 | char *cmd_arg = NULL; | |
747 | int i; | |
b36045c1 | 748 | struct strbuf hdr = STRBUF_INIT; |
2f4038ab | 749 | |
2f4038ab | 750 | set_die_routine(die_webcgi); |
7253a023 | 751 | set_die_is_recursing_routine(die_webcgi_recursing); |
2f4038ab SP |
752 | |
753 | if (!method) | |
754 | die("No REQUEST_METHOD from server"); | |
755 | if (!strcmp(method, "HEAD")) | |
756 | method = "GET"; | |
917adc03 | 757 | dir = getdir(); |
2f4038ab SP |
758 | |
759 | for (i = 0; i < ARRAY_SIZE(services); i++) { | |
760 | struct service_cmd *c = &services[i]; | |
761 | regex_t re; | |
762 | regmatch_t out[1]; | |
2139bd02 | 763 | int ret; |
2f4038ab SP |
764 | |
765 | if (regcomp(&re, c->pattern, REG_EXTENDED)) | |
766 | die("Bogus regex in service table: %s", c->pattern); | |
2139bd02 ÆAB |
767 | ret = regexec(&re, dir, 1, out, 0); |
768 | regfree(&re); | |
769 | ||
770 | if (!ret) { | |
48aec1b1 | 771 | size_t n; |
2f4038ab | 772 | |
b36045c1 EW |
773 | if (strcmp(method, c->method)) |
774 | return bad_request(&hdr, c); | |
2f4038ab SP |
775 | |
776 | cmd = c; | |
48aec1b1 | 777 | n = out[0].rm_eo - out[0].rm_so; |
5c0b13f8 | 778 | cmd_arg = xmemdupz(dir + out[0].rm_so + 1, n - 1); |
2f4038ab SP |
779 | dir[out[0].rm_so] = 0; |
780 | break; | |
781 | } | |
2f4038ab SP |
782 | } |
783 | ||
784 | if (!cmd) | |
b36045c1 | 785 | not_found(&hdr, "Request not supported: '%s'", dir); |
2f4038ab SP |
786 | |
787 | setup_path(); | |
788 | if (!enter_repo(dir, 0)) | |
b36045c1 | 789 | not_found(&hdr, "Not a git repository: '%s'", dir); |
8b2bd7cd TC |
790 | if (!getenv("GIT_HTTP_EXPORT_ALL") && |
791 | access("git-daemon-export-ok", F_OK) ) | |
b36045c1 | 792 | not_found(&hdr, "Repository not exported: '%s'", dir); |
eef75d24 | 793 | free(dir); |
2f4038ab | 794 | |
6881f0cc | 795 | http_config(); |
6bc0cb51 JK |
796 | max_request_buffer = git_env_ulong("GIT_HTTP_MAX_REQUEST_BUFFER", |
797 | max_request_buffer); | |
ff6a37c9 JK |
798 | proto_header = getenv("HTTP_GIT_PROTOCOL"); |
799 | if (proto_header) | |
800 | setenv(GIT_PROTOCOL_ENVIRONMENT, proto_header, 0); | |
6bc0cb51 | 801 | |
b36045c1 | 802 | cmd->imp(&hdr, cmd_arg); |
eef75d24 | 803 | free(cmd_arg); |
2f4038ab SP |
804 | return 0; |
805 | } |