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Commit | Line | Data |
---|---|---|
a6dc3d36 | 1 | #include "cache.h" |
36bf1958 | 2 | #include "alloc.h" |
b2141fc1 | 3 | #include "config.h" |
41771fa4 | 4 | #include "hex.h" |
a80d72db | 5 | #include "repository.h" |
2f4038ab SP |
6 | #include "refs.h" |
7 | #include "pkt-line.h" | |
8 | #include "object.h" | |
9 | #include "tag.h" | |
d807c4a0 | 10 | #include "exec-cmd.h" |
556cfa3b SP |
11 | #include "run-command.h" |
12 | #include "string-list.h" | |
638794cd | 13 | #include "url.h" |
dbbcd44f | 14 | #include "strvec.h" |
0abe14f6 | 15 | #include "packfile.h" |
a80d72db | 16 | #include "object-store.h" |
237ffedd | 17 | #include "protocol.h" |
88c7b4c3 | 18 | #include "date.h" |
d5ebb50d | 19 | #include "wrapper.h" |
2f4038ab SP |
20 | |
21 | static const char content_type[] = "Content-Type"; | |
22 | static const char content_length[] = "Content-Length"; | |
23 | static const char last_modified[] = "Last-Modified"; | |
5abb013b | 24 | static int getanyfile = 1; |
6bc0cb51 | 25 | static unsigned long max_request_buffer = 10 * 1024 * 1024; |
2f4038ab | 26 | |
556cfa3b SP |
27 | static struct string_list *query_params; |
28 | ||
29 | struct rpc_service { | |
30 | const char *name; | |
31 | const char *config_name; | |
6bc0cb51 | 32 | unsigned buffer_input : 1; |
556cfa3b SP |
33 | signed enabled : 2; |
34 | }; | |
35 | ||
36 | static struct rpc_service rpc_service[] = { | |
6bc0cb51 JK |
37 | { "upload-pack", "uploadpack", 1, 1 }, |
38 | { "receive-pack", "receivepack", 0, -1 }, | |
556cfa3b SP |
39 | }; |
40 | ||
556cfa3b SP |
41 | static struct string_list *get_parameters(void) |
42 | { | |
43 | if (!query_params) { | |
44 | const char *query = getenv("QUERY_STRING"); | |
45 | ||
ca56dadb | 46 | CALLOC_ARRAY(query_params, 1); |
556cfa3b | 47 | while (query && *query) { |
638794cd JK |
48 | char *name = url_decode_parameter_name(&query); |
49 | char *value = url_decode_parameter_value(&query); | |
556cfa3b SP |
50 | struct string_list_item *i; |
51 | ||
e8c8b713 | 52 | i = string_list_lookup(query_params, name); |
556cfa3b | 53 | if (!i) |
78a395d3 | 54 | i = string_list_insert(query_params, name); |
556cfa3b SP |
55 | else |
56 | free(i->util); | |
57 | i->util = value; | |
58 | } | |
59 | } | |
60 | return query_params; | |
61 | } | |
62 | ||
63 | static const char *get_parameter(const char *name) | |
64 | { | |
65 | struct string_list_item *i; | |
e8c8b713 | 66 | i = string_list_lookup(get_parameters(), name); |
556cfa3b SP |
67 | return i ? i->util : NULL; |
68 | } | |
69 | ||
35487017 | 70 | __attribute__((format (printf, 2, 3))) |
2f4038ab SP |
71 | static void format_write(int fd, const char *fmt, ...) |
72 | { | |
73 | static char buffer[1024]; | |
74 | ||
75 | va_list args; | |
76 | unsigned n; | |
77 | ||
78 | va_start(args, fmt); | |
79 | n = vsnprintf(buffer, sizeof(buffer), fmt, args); | |
80 | va_end(args); | |
81 | if (n >= sizeof(buffer)) | |
82 | die("protocol error: impossibly long line"); | |
83 | ||
cdf4fb8e | 84 | write_or_die(fd, buffer, n); |
2f4038ab SP |
85 | } |
86 | ||
b36045c1 | 87 | static void http_status(struct strbuf *hdr, unsigned code, const char *msg) |
2f4038ab | 88 | { |
b36045c1 | 89 | strbuf_addf(hdr, "Status: %u %s\r\n", code, msg); |
2f4038ab SP |
90 | } |
91 | ||
b36045c1 | 92 | static void hdr_str(struct strbuf *hdr, const char *name, const char *value) |
2f4038ab | 93 | { |
b36045c1 | 94 | strbuf_addf(hdr, "%s: %s\r\n", name, value); |
2f4038ab SP |
95 | } |
96 | ||
b36045c1 | 97 | static void hdr_int(struct strbuf *hdr, const char *name, uintmax_t value) |
2f4038ab | 98 | { |
b36045c1 | 99 | strbuf_addf(hdr, "%s: %" PRIuMAX "\r\n", name, value); |
2f4038ab SP |
100 | } |
101 | ||
dddbad72 | 102 | static void hdr_date(struct strbuf *hdr, const char *name, timestamp_t when) |
2f4038ab | 103 | { |
a5481a6c | 104 | const char *value = show_date(when, 0, DATE_MODE(RFC2822)); |
b36045c1 | 105 | hdr_str(hdr, name, value); |
2f4038ab SP |
106 | } |
107 | ||
b36045c1 | 108 | static void hdr_nocache(struct strbuf *hdr) |
2f4038ab | 109 | { |
b36045c1 EW |
110 | hdr_str(hdr, "Expires", "Fri, 01 Jan 1980 00:00:00 GMT"); |
111 | hdr_str(hdr, "Pragma", "no-cache"); | |
112 | hdr_str(hdr, "Cache-Control", "no-cache, max-age=0, must-revalidate"); | |
2f4038ab SP |
113 | } |
114 | ||
b36045c1 | 115 | static void hdr_cache_forever(struct strbuf *hdr) |
2f4038ab | 116 | { |
dddbad72 | 117 | timestamp_t now = time(NULL); |
b36045c1 EW |
118 | hdr_date(hdr, "Date", now); |
119 | hdr_date(hdr, "Expires", now + 31536000); | |
120 | hdr_str(hdr, "Cache-Control", "public, max-age=31536000"); | |
2f4038ab SP |
121 | } |
122 | ||
b36045c1 | 123 | static void end_headers(struct strbuf *hdr) |
2f4038ab | 124 | { |
b36045c1 EW |
125 | strbuf_add(hdr, "\r\n", 2); |
126 | write_or_die(1, hdr->buf, hdr->len); | |
127 | strbuf_release(hdr); | |
2f4038ab SP |
128 | } |
129 | ||
b36045c1 EW |
130 | __attribute__((format (printf, 2, 3))) |
131 | static NORETURN void not_found(struct strbuf *hdr, const char *err, ...) | |
2f4038ab SP |
132 | { |
133 | va_list params; | |
134 | ||
b36045c1 EW |
135 | http_status(hdr, 404, "Not Found"); |
136 | hdr_nocache(hdr); | |
137 | end_headers(hdr); | |
2f4038ab SP |
138 | |
139 | va_start(params, err); | |
140 | if (err && *err) | |
141 | vfprintf(stderr, err, params); | |
142 | va_end(params); | |
143 | exit(0); | |
144 | } | |
145 | ||
b36045c1 EW |
146 | __attribute__((format (printf, 2, 3))) |
147 | static NORETURN void forbidden(struct strbuf *hdr, const char *err, ...) | |
556cfa3b SP |
148 | { |
149 | va_list params; | |
150 | ||
b36045c1 EW |
151 | http_status(hdr, 403, "Forbidden"); |
152 | hdr_nocache(hdr); | |
153 | end_headers(hdr); | |
556cfa3b SP |
154 | |
155 | va_start(params, err); | |
156 | if (err && *err) | |
157 | vfprintf(stderr, err, params); | |
158 | va_end(params); | |
159 | exit(0); | |
160 | } | |
161 | ||
b36045c1 | 162 | static void select_getanyfile(struct strbuf *hdr) |
5abb013b SP |
163 | { |
164 | if (!getanyfile) | |
b36045c1 | 165 | forbidden(hdr, "Unsupported service: getanyfile"); |
5abb013b SP |
166 | } |
167 | ||
b36045c1 EW |
168 | static void send_strbuf(struct strbuf *hdr, |
169 | const char *type, struct strbuf *buf) | |
2f4038ab | 170 | { |
b36045c1 EW |
171 | hdr_int(hdr, content_length, buf->len); |
172 | hdr_str(hdr, content_type, type); | |
173 | end_headers(hdr); | |
cdf4fb8e | 174 | write_or_die(1, buf->buf, buf->len); |
2f4038ab SP |
175 | } |
176 | ||
b36045c1 EW |
177 | static void send_local_file(struct strbuf *hdr, const char *the_type, |
178 | const char *name) | |
2f4038ab | 179 | { |
fcd12db6 | 180 | char *p = git_pathdup("%s", name); |
2f4038ab SP |
181 | size_t buf_alloc = 8192; |
182 | char *buf = xmalloc(buf_alloc); | |
183 | int fd; | |
184 | struct stat sb; | |
2f4038ab SP |
185 | |
186 | fd = open(p, O_RDONLY); | |
187 | if (fd < 0) | |
b36045c1 | 188 | not_found(hdr, "Cannot open '%s': %s", p, strerror(errno)); |
2f4038ab SP |
189 | if (fstat(fd, &sb) < 0) |
190 | die_errno("Cannot stat '%s'", p); | |
191 | ||
b36045c1 EW |
192 | hdr_int(hdr, content_length, sb.st_size); |
193 | hdr_str(hdr, content_type, the_type); | |
194 | hdr_date(hdr, last_modified, sb.st_mtime); | |
195 | end_headers(hdr); | |
2f4038ab | 196 | |
4a5328d6 | 197 | for (;;) { |
2f4038ab SP |
198 | ssize_t n = xread(fd, buf, buf_alloc); |
199 | if (n < 0) | |
200 | die_errno("Cannot read '%s'", p); | |
201 | if (!n) | |
202 | break; | |
cdf4fb8e | 203 | write_or_die(1, buf, n); |
2f4038ab SP |
204 | } |
205 | close(fd); | |
206 | free(buf); | |
fcd12db6 | 207 | free(p); |
2f4038ab SP |
208 | } |
209 | ||
b36045c1 | 210 | static void get_text_file(struct strbuf *hdr, char *name) |
2f4038ab | 211 | { |
b36045c1 EW |
212 | select_getanyfile(hdr); |
213 | hdr_nocache(hdr); | |
214 | send_local_file(hdr, "text/plain", name); | |
2f4038ab SP |
215 | } |
216 | ||
b36045c1 | 217 | static void get_loose_object(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-loose-object", name); | |
2f4038ab SP |
222 | } |
223 | ||
b36045c1 | 224 | static void get_pack_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", name); | |
2f4038ab SP |
229 | } |
230 | ||
b36045c1 | 231 | static void get_idx_file(struct strbuf *hdr, char *name) |
2f4038ab | 232 | { |
b36045c1 EW |
233 | select_getanyfile(hdr); |
234 | hdr_cache_forever(hdr); | |
235 | send_local_file(hdr, "application/x-git-packed-objects-toc", name); | |
2f4038ab SP |
236 | } |
237 | ||
6881f0cc | 238 | static void http_config(void) |
556cfa3b | 239 | { |
6881f0cc TA |
240 | int i, value = 0; |
241 | struct strbuf var = STRBUF_INIT; | |
ae021d87 | 242 | |
6881f0cc | 243 | git_config_get_bool("http.getanyfile", &getanyfile); |
6bc0cb51 | 244 | git_config_get_ulong("http.maxrequestbuffer", &max_request_buffer); |
556cfa3b | 245 | |
6881f0cc TA |
246 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { |
247 | struct rpc_service *svc = &rpc_service[i]; | |
248 | strbuf_addf(&var, "http.%s", svc->config_name); | |
249 | if (!git_config_get_bool(var.buf, &value)) | |
250 | svc->enabled = value; | |
251 | strbuf_reset(&var); | |
5abb013b SP |
252 | } |
253 | ||
6881f0cc | 254 | strbuf_release(&var); |
556cfa3b SP |
255 | } |
256 | ||
b36045c1 | 257 | static struct rpc_service *select_service(struct strbuf *hdr, const char *name) |
556cfa3b | 258 | { |
ae021d87 | 259 | const char *svc_name; |
556cfa3b SP |
260 | struct rpc_service *svc = NULL; |
261 | int i; | |
262 | ||
ae021d87 | 263 | if (!skip_prefix(name, "git-", &svc_name)) |
b36045c1 | 264 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b SP |
265 | |
266 | for (i = 0; i < ARRAY_SIZE(rpc_service); i++) { | |
267 | struct rpc_service *s = &rpc_service[i]; | |
ae021d87 | 268 | if (!strcmp(s->name, svc_name)) { |
556cfa3b SP |
269 | svc = s; |
270 | break; | |
271 | } | |
272 | } | |
273 | ||
274 | if (!svc) | |
b36045c1 | 275 | forbidden(hdr, "Unsupported service: '%s'", name); |
556cfa3b | 276 | |
556cfa3b SP |
277 | if (svc->enabled < 0) { |
278 | const char *user = getenv("REMOTE_USER"); | |
279 | svc->enabled = (user && *user) ? 1 : 0; | |
280 | } | |
281 | if (!svc->enabled) | |
b36045c1 | 282 | forbidden(hdr, "Service not enabled: '%s'", svc->name); |
556cfa3b SP |
283 | return svc; |
284 | } | |
285 | ||
6b1fae1d MK |
286 | static void write_to_child(int out, const unsigned char *buf, ssize_t len, const char *prog_name) |
287 | { | |
288 | if (write_in_full(out, buf, len) < 0) | |
289 | die("unable to write to '%s'", prog_name); | |
290 | } | |
291 | ||
6bc0cb51 JK |
292 | /* |
293 | * This is basically strbuf_read(), except that if we | |
294 | * hit max_request_buffer we die (we'd rather reject a | |
295 | * maliciously large request than chew up infinite memory). | |
296 | */ | |
c79edf73 | 297 | static ssize_t read_request_eof(int fd, unsigned char **out) |
6bc0cb51 JK |
298 | { |
299 | size_t len = 0, alloc = 8192; | |
300 | unsigned char *buf = xmalloc(alloc); | |
301 | ||
302 | if (max_request_buffer < alloc) | |
303 | max_request_buffer = alloc; | |
304 | ||
305 | while (1) { | |
306 | ssize_t cnt; | |
307 | ||
308 | cnt = read_in_full(fd, buf + len, alloc - len); | |
309 | if (cnt < 0) { | |
310 | free(buf); | |
311 | return -1; | |
312 | } | |
313 | ||
314 | /* partial read from read_in_full means we hit EOF */ | |
315 | len += cnt; | |
316 | if (len < alloc) { | |
317 | *out = buf; | |
318 | return len; | |
319 | } | |
320 | ||
321 | /* otherwise, grow and try again (if we can) */ | |
322 | if (alloc == max_request_buffer) | |
323 | die("request was larger than our maximum size (%lu);" | |
324 | " try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
325 | max_request_buffer); | |
326 | ||
327 | alloc = alloc_nr(alloc); | |
328 | if (alloc > max_request_buffer) | |
329 | alloc = max_request_buffer; | |
330 | REALLOC_ARRAY(buf, alloc); | |
331 | } | |
332 | } | |
333 | ||
c79edf73 MK |
334 | static ssize_t read_request_fixed_len(int fd, ssize_t req_len, unsigned char **out) |
335 | { | |
336 | unsigned char *buf = NULL; | |
337 | ssize_t cnt = 0; | |
338 | ||
339 | if (max_request_buffer < req_len) { | |
340 | die("request was larger than our maximum size (%lu): " | |
341 | "%" PRIuMAX "; try setting GIT_HTTP_MAX_REQUEST_BUFFER", | |
342 | max_request_buffer, (uintmax_t)req_len); | |
343 | } | |
344 | ||
345 | buf = xmalloc(req_len); | |
346 | cnt = read_in_full(fd, buf, req_len); | |
347 | if (cnt < 0) { | |
348 | free(buf); | |
349 | return -1; | |
350 | } | |
351 | *out = buf; | |
352 | return cnt; | |
353 | } | |
354 | ||
355 | static ssize_t get_content_length(void) | |
356 | { | |
357 | ssize_t val = -1; | |
358 | const char *str = getenv("CONTENT_LENGTH"); | |
359 | ||
574c513e | 360 | if (str && *str && !git_parse_ssize_t(str, &val)) |
c79edf73 MK |
361 | die("failed to parse CONTENT_LENGTH: %s", str); |
362 | return val; | |
363 | } | |
364 | ||
365 | static ssize_t read_request(int fd, unsigned char **out, ssize_t req_len) | |
366 | { | |
367 | if (req_len < 0) | |
368 | return read_request_eof(fd, out); | |
369 | else | |
370 | return read_request_fixed_len(fd, req_len, out); | |
371 | } | |
372 | ||
373 | static void inflate_request(const char *prog_name, int out, int buffer_input, ssize_t req_len) | |
556cfa3b | 374 | { |
ef49a7a0 | 375 | git_zstream stream; |
6bc0cb51 | 376 | unsigned char *full_request = NULL; |
556cfa3b SP |
377 | unsigned char in_buf[8192]; |
378 | unsigned char out_buf[8192]; | |
379 | unsigned long cnt = 0; | |
6c213e86 MK |
380 | int req_len_defined = req_len >= 0; |
381 | size_t req_remaining_len = req_len; | |
556cfa3b SP |
382 | |
383 | memset(&stream, 0, sizeof(stream)); | |
5e86c1fb | 384 | git_inflate_init_gzip_only(&stream); |
556cfa3b SP |
385 | |
386 | while (1) { | |
6bc0cb51 JK |
387 | ssize_t n; |
388 | ||
389 | if (buffer_input) { | |
390 | if (full_request) | |
391 | n = 0; /* nothing left to read */ | |
392 | else | |
c79edf73 | 393 | n = read_request(0, &full_request, req_len); |
6bc0cb51 JK |
394 | stream.next_in = full_request; |
395 | } else { | |
6c213e86 MK |
396 | ssize_t buffer_len; |
397 | if (req_len_defined && req_remaining_len <= sizeof(in_buf)) | |
398 | buffer_len = req_remaining_len; | |
399 | else | |
400 | buffer_len = sizeof(in_buf); | |
401 | n = xread(0, in_buf, buffer_len); | |
6bc0cb51 | 402 | stream.next_in = in_buf; |
6c213e86 MK |
403 | if (req_len_defined && n > 0) |
404 | req_remaining_len -= n; | |
6bc0cb51 JK |
405 | } |
406 | ||
556cfa3b SP |
407 | if (n <= 0) |
408 | die("request ended in the middle of the gzip stream"); | |
556cfa3b SP |
409 | stream.avail_in = n; |
410 | ||
411 | while (0 < stream.avail_in) { | |
412 | int ret; | |
413 | ||
414 | stream.next_out = out_buf; | |
415 | stream.avail_out = sizeof(out_buf); | |
416 | ||
9e7e5ca3 | 417 | ret = git_inflate(&stream, Z_NO_FLUSH); |
556cfa3b SP |
418 | if (ret != Z_OK && ret != Z_STREAM_END) |
419 | die("zlib error inflating request, result %d", ret); | |
420 | ||
421 | n = stream.total_out - cnt; | |
6b1fae1d MK |
422 | write_to_child(out, out_buf, stream.total_out - cnt, prog_name); |
423 | cnt = stream.total_out; | |
556cfa3b SP |
424 | |
425 | if (ret == Z_STREAM_END) | |
426 | goto done; | |
427 | } | |
428 | } | |
429 | ||
430 | done: | |
9e7e5ca3 | 431 | git_inflate_end(&stream); |
556cfa3b | 432 | close(out); |
6bc0cb51 JK |
433 | free(full_request); |
434 | } | |
435 | ||
c79edf73 | 436 | static void copy_request(const char *prog_name, int out, ssize_t req_len) |
6bc0cb51 JK |
437 | { |
438 | unsigned char *buf; | |
c79edf73 | 439 | ssize_t n = read_request(0, &buf, req_len); |
6bc0cb51 JK |
440 | if (n < 0) |
441 | die_errno("error reading request body"); | |
6b1fae1d | 442 | write_to_child(out, buf, n, prog_name); |
6bc0cb51 JK |
443 | close(out); |
444 | free(buf); | |
556cfa3b SP |
445 | } |
446 | ||
6c213e86 MK |
447 | static void pipe_fixed_length(const char *prog_name, int out, size_t req_len) |
448 | { | |
449 | unsigned char buf[8192]; | |
450 | size_t remaining_len = req_len; | |
451 | ||
452 | while (remaining_len > 0) { | |
453 | size_t chunk_length = remaining_len > sizeof(buf) ? sizeof(buf) : remaining_len; | |
454 | ssize_t n = xread(0, buf, chunk_length); | |
455 | if (n < 0) | |
456 | die_errno("Reading request failed"); | |
457 | write_to_child(out, buf, n, prog_name); | |
458 | remaining_len -= n; | |
459 | } | |
460 | ||
461 | close(out); | |
462 | } | |
463 | ||
6bc0cb51 | 464 | static void run_service(const char **argv, int buffer_input) |
556cfa3b SP |
465 | { |
466 | const char *encoding = getenv("HTTP_CONTENT_ENCODING"); | |
467 | const char *user = getenv("REMOTE_USER"); | |
468 | const char *host = getenv("REMOTE_ADDR"); | |
556cfa3b | 469 | int gzipped_request = 0; |
d3180279 | 470 | struct child_process cld = CHILD_PROCESS_INIT; |
c79edf73 | 471 | ssize_t req_len = get_content_length(); |
556cfa3b | 472 | |
12144e8f | 473 | if (encoding && (!strcmp(encoding, "gzip") || !strcmp(encoding, "x-gzip"))) |
556cfa3b SP |
474 | gzipped_request = 1; |
475 | ||
476 | if (!user || !*user) | |
477 | user = "anonymous"; | |
478 | if (!host || !*host) | |
479 | host = "(none)"; | |
480 | ||
e32a4581 | 481 | if (!getenv("GIT_COMMITTER_NAME")) |
29fda24d | 482 | strvec_pushf(&cld.env, "GIT_COMMITTER_NAME=%s", user); |
e32a4581 | 483 | if (!getenv("GIT_COMMITTER_EMAIL")) |
29fda24d | 484 | strvec_pushf(&cld.env, |
f6d8942b | 485 | "GIT_COMMITTER_EMAIL=%s@http.%s", user, host); |
556cfa3b | 486 | |
6def0ff8 | 487 | strvec_pushv(&cld.args, argv); |
6c213e86 | 488 | if (buffer_input || gzipped_request || req_len >= 0) |
556cfa3b SP |
489 | cld.in = -1; |
490 | cld.git_cmd = 1; | |
02818a98 MK |
491 | cld.clean_on_exit = 1; |
492 | cld.wait_after_clean = 1; | |
556cfa3b SP |
493 | if (start_command(&cld)) |
494 | exit(1); | |
495 | ||
496 | close(1); | |
497 | if (gzipped_request) | |
c79edf73 | 498 | inflate_request(argv[0], cld.in, buffer_input, req_len); |
6bc0cb51 | 499 | else if (buffer_input) |
c79edf73 | 500 | copy_request(argv[0], cld.in, req_len); |
6c213e86 MK |
501 | else if (req_len >= 0) |
502 | pipe_fixed_length(argv[0], cld.in, req_len); | |
556cfa3b SP |
503 | else |
504 | close(0); | |
505 | ||
506 | if (finish_command(&cld)) | |
507 | exit(1); | |
556cfa3b SP |
508 | } |
509 | ||
f72f5421 | 510 | static int show_text_ref(const char *name, const struct object_id *oid, |
5cf88fd8 | 511 | int flag UNUSED, void *cb_data) |
2f4038ab | 512 | { |
6130f86d | 513 | const char *name_nons = strip_namespace(name); |
2f4038ab | 514 | struct strbuf *buf = cb_data; |
109cd76d | 515 | struct object *o = parse_object(the_repository, oid); |
2f4038ab SP |
516 | if (!o) |
517 | return 0; | |
518 | ||
f72f5421 | 519 | strbuf_addf(buf, "%s\t%s\n", oid_to_hex(oid), name_nons); |
2f4038ab | 520 | if (o->type == OBJ_TAG) { |
a74093da | 521 | o = deref_tag(the_repository, o, name, 0); |
2f4038ab SP |
522 | if (!o) |
523 | return 0; | |
f2fd0760 | 524 | strbuf_addf(buf, "%s\t%s^{}\n", oid_to_hex(&o->oid), |
6130f86d | 525 | name_nons); |
2f4038ab SP |
526 | } |
527 | return 0; | |
528 | } | |
529 | ||
2be1506a | 530 | static void get_info_refs(struct strbuf *hdr, char *arg UNUSED) |
2f4038ab | 531 | { |
556cfa3b | 532 | const char *service_name = get_parameter("service"); |
2f4038ab SP |
533 | struct strbuf buf = STRBUF_INIT; |
534 | ||
b36045c1 | 535 | hdr_nocache(hdr); |
556cfa3b SP |
536 | |
537 | if (service_name) { | |
538 | const char *argv[] = {NULL /* service name */, | |
98e2d9d6 | 539 | "--http-backend-info-refs", |
556cfa3b | 540 | ".", NULL}; |
b36045c1 | 541 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
542 | |
543 | strbuf_addf(&buf, "application/x-git-%s-advertisement", | |
544 | svc->name); | |
b36045c1 EW |
545 | hdr_str(hdr, content_type, buf.buf); |
546 | end_headers(hdr); | |
556cfa3b | 547 | |
237ffedd BW |
548 | |
549 | if (determine_protocol_version_server() != protocol_v2) { | |
550 | packet_write_fmt(1, "# service=git-%s\n", svc->name); | |
551 | packet_flush(1); | |
552 | } | |
556cfa3b SP |
553 | |
554 | argv[0] = svc->name; | |
6bc0cb51 | 555 | run_service(argv, 0); |
556cfa3b SP |
556 | |
557 | } else { | |
b36045c1 | 558 | select_getanyfile(hdr); |
6130f86d | 559 | for_each_namespaced_ref(show_text_ref, &buf); |
b36045c1 | 560 | send_strbuf(hdr, "text/plain", &buf); |
556cfa3b | 561 | } |
2f4038ab SP |
562 | strbuf_release(&buf); |
563 | } | |
564 | ||
f72f5421 MH |
565 | static int show_head_ref(const char *refname, const struct object_id *oid, |
566 | int flag, void *cb_data) | |
6130f86d JK |
567 | { |
568 | struct strbuf *buf = cb_data; | |
569 | ||
570 | if (flag & REF_ISSYMREF) { | |
7695d118 RS |
571 | const char *target = resolve_ref_unsafe(refname, |
572 | RESOLVE_REF_READING, | |
744c040b | 573 | NULL, NULL); |
6130f86d | 574 | |
7fd12bfb MH |
575 | if (target) |
576 | strbuf_addf(buf, "ref: %s\n", strip_namespace(target)); | |
6130f86d | 577 | } else { |
f72f5421 | 578 | strbuf_addf(buf, "%s\n", oid_to_hex(oid)); |
6130f86d JK |
579 | } |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
2be1506a | 584 | static void get_head(struct strbuf *hdr, char *arg UNUSED) |
6130f86d JK |
585 | { |
586 | struct strbuf buf = STRBUF_INIT; | |
587 | ||
b36045c1 | 588 | select_getanyfile(hdr); |
6130f86d | 589 | head_ref_namespaced(show_head_ref, &buf); |
b36045c1 | 590 | send_strbuf(hdr, "text/plain", &buf); |
6130f86d JK |
591 | strbuf_release(&buf); |
592 | } | |
593 | ||
2be1506a | 594 | static void get_info_packs(struct strbuf *hdr, char *arg UNUSED) |
2f4038ab SP |
595 | { |
596 | size_t objdirlen = strlen(get_object_directory()); | |
597 | struct strbuf buf = STRBUF_INIT; | |
598 | struct packed_git *p; | |
599 | size_t cnt = 0; | |
600 | ||
b36045c1 | 601 | select_getanyfile(hdr); |
454ea2e4 | 602 | for (p = get_all_packs(the_repository); p; p = p->next) { |
2f4038ab SP |
603 | if (p->pack_local) |
604 | cnt++; | |
605 | } | |
606 | ||
607 | strbuf_grow(&buf, cnt * 53 + 2); | |
454ea2e4 | 608 | for (p = get_all_packs(the_repository); p; p = p->next) { |
2f4038ab SP |
609 | if (p->pack_local) |
610 | strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6); | |
611 | } | |
612 | strbuf_addch(&buf, '\n'); | |
613 | ||
b36045c1 EW |
614 | hdr_nocache(hdr); |
615 | send_strbuf(hdr, "text/plain; charset=utf-8", &buf); | |
2f4038ab SP |
616 | strbuf_release(&buf); |
617 | } | |
618 | ||
b36045c1 | 619 | static void check_content_type(struct strbuf *hdr, const char *accepted_type) |
556cfa3b SP |
620 | { |
621 | const char *actual_type = getenv("CONTENT_TYPE"); | |
622 | ||
623 | if (!actual_type) | |
624 | actual_type = ""; | |
625 | ||
626 | if (strcmp(actual_type, accepted_type)) { | |
b36045c1 EW |
627 | http_status(hdr, 415, "Unsupported Media Type"); |
628 | hdr_nocache(hdr); | |
629 | end_headers(hdr); | |
556cfa3b SP |
630 | format_write(1, |
631 | "Expected POST with Content-Type '%s'," | |
632 | " but received '%s' instead.\n", | |
633 | accepted_type, actual_type); | |
634 | exit(0); | |
635 | } | |
636 | } | |
637 | ||
b36045c1 | 638 | static void service_rpc(struct strbuf *hdr, char *service_name) |
556cfa3b SP |
639 | { |
640 | const char *argv[] = {NULL, "--stateless-rpc", ".", NULL}; | |
b36045c1 | 641 | struct rpc_service *svc = select_service(hdr, service_name); |
556cfa3b SP |
642 | struct strbuf buf = STRBUF_INIT; |
643 | ||
644 | strbuf_reset(&buf); | |
645 | strbuf_addf(&buf, "application/x-git-%s-request", svc->name); | |
b36045c1 | 646 | check_content_type(hdr, buf.buf); |
556cfa3b | 647 | |
b36045c1 | 648 | hdr_nocache(hdr); |
556cfa3b SP |
649 | |
650 | strbuf_reset(&buf); | |
651 | strbuf_addf(&buf, "application/x-git-%s-result", svc->name); | |
b36045c1 | 652 | hdr_str(hdr, content_type, buf.buf); |
556cfa3b | 653 | |
b36045c1 | 654 | end_headers(hdr); |
556cfa3b SP |
655 | |
656 | argv[0] = svc->name; | |
6bc0cb51 | 657 | run_service(argv, svc->buffer_input); |
556cfa3b SP |
658 | strbuf_release(&buf); |
659 | } | |
660 | ||
7253a023 | 661 | static int dead; |
2f4038ab SP |
662 | static NORETURN void die_webcgi(const char *err, va_list params) |
663 | { | |
7253a023 | 664 | if (dead <= 1) { |
b36045c1 | 665 | struct strbuf hdr = STRBUF_INIT; |
e081a7c3 | 666 | report_fn die_message_fn = get_die_message_routine(); |
b36045c1 | 667 | |
e081a7c3 | 668 | die_message_fn(err, params); |
2f4038ab | 669 | |
b36045c1 EW |
670 | http_status(&hdr, 500, "Internal Server Error"); |
671 | hdr_nocache(&hdr); | |
672 | end_headers(&hdr); | |
5856b5f5 SP |
673 | } |
674 | exit(0); /* we successfully reported a failure ;-) */ | |
2f4038ab SP |
675 | } |
676 | ||
7253a023 JK |
677 | static int die_webcgi_recursing(void) |
678 | { | |
679 | return dead++ > 1; | |
680 | } | |
681 | ||
917adc03 ML |
682 | static char* getdir(void) |
683 | { | |
684 | struct strbuf buf = STRBUF_INIT; | |
685 | char *pathinfo = getenv("PATH_INFO"); | |
686 | char *root = getenv("GIT_PROJECT_ROOT"); | |
687 | char *path = getenv("PATH_TRANSLATED"); | |
688 | ||
689 | if (root && *root) { | |
690 | if (!pathinfo || !*pathinfo) | |
691 | die("GIT_PROJECT_ROOT is set but PATH_INFO is not"); | |
34b6cb8b SP |
692 | if (daemon_avoid_alias(pathinfo)) |
693 | die("'%s': aliased", pathinfo); | |
cf688cc2 | 694 | end_url_with_slash(&buf, root); |
34b6cb8b SP |
695 | if (pathinfo[0] == '/') |
696 | pathinfo++; | |
917adc03 ML |
697 | strbuf_addstr(&buf, pathinfo); |
698 | return strbuf_detach(&buf, NULL); | |
699 | } else if (path && *path) { | |
700 | return xstrdup(path); | |
701 | } else | |
702 | die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server"); | |
703 | return NULL; | |
704 | } | |
705 | ||
2f4038ab SP |
706 | static struct service_cmd { |
707 | const char *method; | |
708 | const char *pattern; | |
b36045c1 | 709 | void (*imp)(struct strbuf *, char *); |
2f4038ab | 710 | } services[] = { |
6130f86d | 711 | {"GET", "/HEAD$", get_head}, |
2f4038ab SP |
712 | {"GET", "/info/refs$", get_info_refs}, |
713 | {"GET", "/objects/info/alternates$", get_text_file}, | |
714 | {"GET", "/objects/info/http-alternates$", get_text_file}, | |
715 | {"GET", "/objects/info/packs$", get_info_packs}, | |
716 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object}, | |
f786ae9f | 717 | {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{62}$", get_loose_object}, |
2f4038ab | 718 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file}, |
f786ae9f | 719 | {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.pack$", get_pack_file}, |
556cfa3b | 720 | {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file}, |
f786ae9f | 721 | {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.idx$", get_idx_file}, |
556cfa3b SP |
722 | |
723 | {"POST", "/git-upload-pack$", service_rpc}, | |
724 | {"POST", "/git-receive-pack$", service_rpc} | |
2f4038ab SP |
725 | }; |
726 | ||
b36045c1 EW |
727 | static int bad_request(struct strbuf *hdr, const struct service_cmd *c) |
728 | { | |
729 | const char *proto = getenv("SERVER_PROTOCOL"); | |
730 | ||
731 | if (proto && !strcmp(proto, "HTTP/1.1")) { | |
732 | http_status(hdr, 405, "Method Not Allowed"); | |
733 | hdr_str(hdr, "Allow", | |
734 | !strcmp(c->method, "GET") ? "GET, HEAD" : c->method); | |
735 | } else | |
736 | http_status(hdr, 400, "Bad Request"); | |
737 | hdr_nocache(hdr); | |
738 | end_headers(hdr); | |
739 | return 0; | |
740 | } | |
741 | ||
77ef8b0e | 742 | int cmd_main(int argc UNUSED, const char **argv UNUSED) |
2f4038ab SP |
743 | { |
744 | char *method = getenv("REQUEST_METHOD"); | |
ff6a37c9 | 745 | const char *proto_header; |
917adc03 | 746 | char *dir; |
2f4038ab SP |
747 | struct service_cmd *cmd = NULL; |
748 | char *cmd_arg = NULL; | |
749 | int i; | |
b36045c1 | 750 | struct strbuf hdr = STRBUF_INIT; |
2f4038ab | 751 | |
2f4038ab | 752 | set_die_routine(die_webcgi); |
7253a023 | 753 | set_die_is_recursing_routine(die_webcgi_recursing); |
2f4038ab SP |
754 | |
755 | if (!method) | |
756 | die("No REQUEST_METHOD from server"); | |
757 | if (!strcmp(method, "HEAD")) | |
758 | method = "GET"; | |
917adc03 | 759 | dir = getdir(); |
2f4038ab SP |
760 | |
761 | for (i = 0; i < ARRAY_SIZE(services); i++) { | |
762 | struct service_cmd *c = &services[i]; | |
763 | regex_t re; | |
764 | regmatch_t out[1]; | |
2139bd02 | 765 | int ret; |
2f4038ab SP |
766 | |
767 | if (regcomp(&re, c->pattern, REG_EXTENDED)) | |
768 | die("Bogus regex in service table: %s", c->pattern); | |
2139bd02 ÆAB |
769 | ret = regexec(&re, dir, 1, out, 0); |
770 | regfree(&re); | |
771 | ||
772 | if (!ret) { | |
48aec1b1 | 773 | size_t n; |
2f4038ab | 774 | |
b36045c1 EW |
775 | if (strcmp(method, c->method)) |
776 | return bad_request(&hdr, c); | |
2f4038ab SP |
777 | |
778 | cmd = c; | |
48aec1b1 | 779 | n = out[0].rm_eo - out[0].rm_so; |
5c0b13f8 | 780 | cmd_arg = xmemdupz(dir + out[0].rm_so + 1, n - 1); |
2f4038ab SP |
781 | dir[out[0].rm_so] = 0; |
782 | break; | |
783 | } | |
2f4038ab SP |
784 | } |
785 | ||
786 | if (!cmd) | |
b36045c1 | 787 | not_found(&hdr, "Request not supported: '%s'", dir); |
2f4038ab SP |
788 | |
789 | setup_path(); | |
790 | if (!enter_repo(dir, 0)) | |
b36045c1 | 791 | not_found(&hdr, "Not a git repository: '%s'", dir); |
8b2bd7cd TC |
792 | if (!getenv("GIT_HTTP_EXPORT_ALL") && |
793 | access("git-daemon-export-ok", F_OK) ) | |
b36045c1 | 794 | not_found(&hdr, "Repository not exported: '%s'", dir); |
eef75d24 | 795 | free(dir); |
2f4038ab | 796 | |
6881f0cc | 797 | http_config(); |
6bc0cb51 JK |
798 | max_request_buffer = git_env_ulong("GIT_HTTP_MAX_REQUEST_BUFFER", |
799 | max_request_buffer); | |
ff6a37c9 JK |
800 | proto_header = getenv("HTTP_GIT_PROTOCOL"); |
801 | if (proto_header) | |
802 | setenv(GIT_PROTOCOL_ENVIRONMENT, proto_header, 0); | |
6bc0cb51 | 803 | |
b36045c1 | 804 | cmd->imp(&hdr, cmd_arg); |
eef75d24 | 805 | free(cmd_arg); |
2f4038ab SP |
806 | return 0; |
807 | } |