t/t1*: avoid redundant uses of cat
[alt-git.git] / http-backend.c
blob1ed1e29d0706bfe51e2074cabe393e0ed6eba7c7
1 #include "git-compat-util.h"
2 #include "config.h"
3 #include "environment.h"
4 #include "git-zlib.h"
5 #include "hex.h"
6 #include "path.h"
7 #include "repository.h"
8 #include "refs.h"
9 #include "pkt-line.h"
10 #include "object.h"
11 #include "tag.h"
12 #include "exec-cmd.h"
13 #include "run-command.h"
14 #include "string-list.h"
15 #include "url.h"
16 #include "strvec.h"
17 #include "packfile.h"
18 #include "object-store-ll.h"
19 #include "protocol.h"
20 #include "date.h"
21 #include "write-or-die.h"
23 static const char content_type[] = "Content-Type";
24 static const char content_length[] = "Content-Length";
25 static const char last_modified[] = "Last-Modified";
26 static int getanyfile = 1;
27 static unsigned long max_request_buffer = 10 * 1024 * 1024;
29 static struct string_list *query_params;
31 struct rpc_service {
32 const char *name;
33 const char *config_name;
34 unsigned buffer_input : 1;
35 signed enabled : 2;
38 static struct rpc_service rpc_service[] = {
39 { "upload-pack", "uploadpack", 1, 1 },
40 { "receive-pack", "receivepack", 0, -1 },
41 { "upload-archive", "uploadarchive", 0, -1 },
44 static struct string_list *get_parameters(void)
46 if (!query_params) {
47 const char *query = getenv("QUERY_STRING");
49 CALLOC_ARRAY(query_params, 1);
50 while (query && *query) {
51 char *name = url_decode_parameter_name(&query);
52 char *value = url_decode_parameter_value(&query);
53 struct string_list_item *i;
55 i = string_list_lookup(query_params, name);
56 if (!i)
57 i = string_list_insert(query_params, name);
58 else
59 free(i->util);
60 i->util = value;
63 return query_params;
66 static const char *get_parameter(const char *name)
68 struct string_list_item *i;
69 i = string_list_lookup(get_parameters(), name);
70 return i ? i->util : NULL;
73 __attribute__((format (printf, 2, 3)))
74 static void format_write(int fd, const char *fmt, ...)
76 static char buffer[1024];
78 va_list args;
79 unsigned n;
81 va_start(args, fmt);
82 n = vsnprintf(buffer, sizeof(buffer), fmt, args);
83 va_end(args);
84 if (n >= sizeof(buffer))
85 die("protocol error: impossibly long line");
87 write_or_die(fd, buffer, n);
90 static void http_status(struct strbuf *hdr, unsigned code, const char *msg)
92 strbuf_addf(hdr, "Status: %u %s\r\n", code, msg);
95 static void hdr_str(struct strbuf *hdr, const char *name, const char *value)
97 strbuf_addf(hdr, "%s: %s\r\n", name, value);
100 static void hdr_int(struct strbuf *hdr, const char *name, uintmax_t value)
102 strbuf_addf(hdr, "%s: %" PRIuMAX "\r\n", name, value);
105 static void hdr_date(struct strbuf *hdr, const char *name, timestamp_t when)
107 const char *value = show_date(when, 0, DATE_MODE(RFC2822));
108 hdr_str(hdr, name, value);
111 static void hdr_nocache(struct strbuf *hdr)
113 hdr_str(hdr, "Expires", "Fri, 01 Jan 1980 00:00:00 GMT");
114 hdr_str(hdr, "Pragma", "no-cache");
115 hdr_str(hdr, "Cache-Control", "no-cache, max-age=0, must-revalidate");
118 static void hdr_cache_forever(struct strbuf *hdr)
120 timestamp_t now = time(NULL);
121 hdr_date(hdr, "Date", now);
122 hdr_date(hdr, "Expires", now + 31536000);
123 hdr_str(hdr, "Cache-Control", "public, max-age=31536000");
126 static void end_headers(struct strbuf *hdr)
128 strbuf_add(hdr, "\r\n", 2);
129 write_or_die(1, hdr->buf, hdr->len);
130 strbuf_release(hdr);
133 __attribute__((format (printf, 2, 3)))
134 static NORETURN void not_found(struct strbuf *hdr, const char *err, ...)
136 va_list params;
138 http_status(hdr, 404, "Not Found");
139 hdr_nocache(hdr);
140 end_headers(hdr);
142 va_start(params, err);
143 if (err && *err)
144 vfprintf(stderr, err, params);
145 va_end(params);
146 exit(0);
149 __attribute__((format (printf, 2, 3)))
150 static NORETURN void forbidden(struct strbuf *hdr, const char *err, ...)
152 va_list params;
154 http_status(hdr, 403, "Forbidden");
155 hdr_nocache(hdr);
156 end_headers(hdr);
158 va_start(params, err);
159 if (err && *err)
160 vfprintf(stderr, err, params);
161 va_end(params);
162 exit(0);
165 static void select_getanyfile(struct strbuf *hdr)
167 if (!getanyfile)
168 forbidden(hdr, "Unsupported service: getanyfile");
171 static void send_strbuf(struct strbuf *hdr,
172 const char *type, struct strbuf *buf)
174 hdr_int(hdr, content_length, buf->len);
175 hdr_str(hdr, content_type, type);
176 end_headers(hdr);
177 write_or_die(1, buf->buf, buf->len);
180 static void send_local_file(struct strbuf *hdr, const char *the_type,
181 const char *name)
183 char *p = git_pathdup("%s", name);
184 size_t buf_alloc = 8192;
185 char *buf = xmalloc(buf_alloc);
186 int fd;
187 struct stat sb;
189 fd = open(p, O_RDONLY);
190 if (fd < 0)
191 not_found(hdr, "Cannot open '%s': %s", p, strerror(errno));
192 if (fstat(fd, &sb) < 0)
193 die_errno("Cannot stat '%s'", p);
195 hdr_int(hdr, content_length, sb.st_size);
196 hdr_str(hdr, content_type, the_type);
197 hdr_date(hdr, last_modified, sb.st_mtime);
198 end_headers(hdr);
200 for (;;) {
201 ssize_t n = xread(fd, buf, buf_alloc);
202 if (n < 0)
203 die_errno("Cannot read '%s'", p);
204 if (!n)
205 break;
206 write_or_die(1, buf, n);
208 close(fd);
209 free(buf);
210 free(p);
213 static void get_text_file(struct strbuf *hdr, char *name)
215 select_getanyfile(hdr);
216 hdr_nocache(hdr);
217 send_local_file(hdr, "text/plain", name);
220 static void get_loose_object(struct strbuf *hdr, char *name)
222 select_getanyfile(hdr);
223 hdr_cache_forever(hdr);
224 send_local_file(hdr, "application/x-git-loose-object", name);
227 static void get_pack_file(struct strbuf *hdr, char *name)
229 select_getanyfile(hdr);
230 hdr_cache_forever(hdr);
231 send_local_file(hdr, "application/x-git-packed-objects", name);
234 static void get_idx_file(struct strbuf *hdr, char *name)
236 select_getanyfile(hdr);
237 hdr_cache_forever(hdr);
238 send_local_file(hdr, "application/x-git-packed-objects-toc", name);
241 static void http_config(void)
243 int i, value = 0;
244 struct strbuf var = STRBUF_INIT;
246 git_config_get_bool("http.getanyfile", &getanyfile);
247 git_config_get_ulong("http.maxrequestbuffer", &max_request_buffer);
249 for (i = 0; i < ARRAY_SIZE(rpc_service); i++) {
250 struct rpc_service *svc = &rpc_service[i];
251 strbuf_addf(&var, "http.%s", svc->config_name);
252 if (!git_config_get_bool(var.buf, &value))
253 svc->enabled = value;
254 strbuf_reset(&var);
257 strbuf_release(&var);
260 static struct rpc_service *select_service(struct strbuf *hdr, const char *name)
262 const char *svc_name;
263 struct rpc_service *svc = NULL;
264 int i;
266 if (!skip_prefix(name, "git-", &svc_name))
267 forbidden(hdr, "Unsupported service: '%s'", name);
269 for (i = 0; i < ARRAY_SIZE(rpc_service); i++) {
270 struct rpc_service *s = &rpc_service[i];
271 if (!strcmp(s->name, svc_name)) {
272 svc = s;
273 break;
277 if (!svc)
278 forbidden(hdr, "Unsupported service: '%s'", name);
280 if (svc->enabled < 0) {
281 const char *user = getenv("REMOTE_USER");
282 svc->enabled = (user && *user) ? 1 : 0;
284 if (!svc->enabled)
285 forbidden(hdr, "Service not enabled: '%s'", svc->name);
286 return svc;
289 static void write_to_child(int out, const unsigned char *buf, ssize_t len, const char *prog_name)
291 if (write_in_full(out, buf, len) < 0)
292 die("unable to write to '%s'", prog_name);
296 * This is basically strbuf_read(), except that if we
297 * hit max_request_buffer we die (we'd rather reject a
298 * maliciously large request than chew up infinite memory).
300 static ssize_t read_request_eof(int fd, unsigned char **out)
302 size_t len = 0, alloc = 8192;
303 unsigned char *buf = xmalloc(alloc);
305 if (max_request_buffer < alloc)
306 max_request_buffer = alloc;
308 while (1) {
309 ssize_t cnt;
311 cnt = read_in_full(fd, buf + len, alloc - len);
312 if (cnt < 0) {
313 free(buf);
314 return -1;
317 /* partial read from read_in_full means we hit EOF */
318 len += cnt;
319 if (len < alloc) {
320 *out = buf;
321 return len;
324 /* otherwise, grow and try again (if we can) */
325 if (alloc == max_request_buffer)
326 die("request was larger than our maximum size (%lu);"
327 " try setting GIT_HTTP_MAX_REQUEST_BUFFER",
328 max_request_buffer);
330 alloc = alloc_nr(alloc);
331 if (alloc > max_request_buffer)
332 alloc = max_request_buffer;
333 REALLOC_ARRAY(buf, alloc);
337 static ssize_t read_request_fixed_len(int fd, ssize_t req_len, unsigned char **out)
339 unsigned char *buf = NULL;
340 ssize_t cnt = 0;
342 if (max_request_buffer < req_len) {
343 die("request was larger than our maximum size (%lu): "
344 "%" PRIuMAX "; try setting GIT_HTTP_MAX_REQUEST_BUFFER",
345 max_request_buffer, (uintmax_t)req_len);
348 buf = xmalloc(req_len);
349 cnt = read_in_full(fd, buf, req_len);
350 if (cnt < 0) {
351 free(buf);
352 return -1;
354 *out = buf;
355 return cnt;
358 static ssize_t get_content_length(void)
360 ssize_t val = -1;
361 const char *str = getenv("CONTENT_LENGTH");
363 if (str && *str && !git_parse_ssize_t(str, &val))
364 die("failed to parse CONTENT_LENGTH: %s", str);
365 return val;
368 static ssize_t read_request(int fd, unsigned char **out, ssize_t req_len)
370 if (req_len < 0)
371 return read_request_eof(fd, out);
372 else
373 return read_request_fixed_len(fd, req_len, out);
376 static void inflate_request(const char *prog_name, int out, int buffer_input, ssize_t req_len)
378 git_zstream stream;
379 unsigned char *full_request = NULL;
380 unsigned char in_buf[8192];
381 unsigned char out_buf[8192];
382 unsigned long cnt = 0;
383 int req_len_defined = req_len >= 0;
384 size_t req_remaining_len = req_len;
386 memset(&stream, 0, sizeof(stream));
387 git_inflate_init_gzip_only(&stream);
389 while (1) {
390 ssize_t n;
392 if (buffer_input) {
393 if (full_request)
394 n = 0; /* nothing left to read */
395 else
396 n = read_request(0, &full_request, req_len);
397 stream.next_in = full_request;
398 } else {
399 ssize_t buffer_len;
400 if (req_len_defined && req_remaining_len <= sizeof(in_buf))
401 buffer_len = req_remaining_len;
402 else
403 buffer_len = sizeof(in_buf);
404 n = xread(0, in_buf, buffer_len);
405 stream.next_in = in_buf;
406 if (req_len_defined && n > 0)
407 req_remaining_len -= n;
410 if (n <= 0)
411 die("request ended in the middle of the gzip stream");
412 stream.avail_in = n;
414 while (0 < stream.avail_in) {
415 int ret;
417 stream.next_out = out_buf;
418 stream.avail_out = sizeof(out_buf);
420 ret = git_inflate(&stream, Z_NO_FLUSH);
421 if (ret != Z_OK && ret != Z_STREAM_END)
422 die("zlib error inflating request, result %d", ret);
424 n = stream.total_out - cnt;
425 write_to_child(out, out_buf, stream.total_out - cnt, prog_name);
426 cnt = stream.total_out;
428 if (ret == Z_STREAM_END)
429 goto done;
433 done:
434 git_inflate_end(&stream);
435 close(out);
436 free(full_request);
439 static void copy_request(const char *prog_name, int out, ssize_t req_len)
441 unsigned char *buf;
442 ssize_t n = read_request(0, &buf, req_len);
443 if (n < 0)
444 die_errno("error reading request body");
445 write_to_child(out, buf, n, prog_name);
446 close(out);
447 free(buf);
450 static void pipe_fixed_length(const char *prog_name, int out, size_t req_len)
452 unsigned char buf[8192];
453 size_t remaining_len = req_len;
455 while (remaining_len > 0) {
456 size_t chunk_length = remaining_len > sizeof(buf) ? sizeof(buf) : remaining_len;
457 ssize_t n = xread(0, buf, chunk_length);
458 if (n < 0)
459 die_errno("Reading request failed");
460 write_to_child(out, buf, n, prog_name);
461 remaining_len -= n;
464 close(out);
467 static void run_service(const char **argv, int buffer_input)
469 const char *encoding = getenv("HTTP_CONTENT_ENCODING");
470 const char *user = getenv("REMOTE_USER");
471 const char *host = getenv("REMOTE_ADDR");
472 int gzipped_request = 0;
473 struct child_process cld = CHILD_PROCESS_INIT;
474 ssize_t req_len = get_content_length();
476 if (encoding && (!strcmp(encoding, "gzip") || !strcmp(encoding, "x-gzip")))
477 gzipped_request = 1;
479 if (!user || !*user)
480 user = "anonymous";
481 if (!host || !*host)
482 host = "(none)";
484 if (!getenv("GIT_COMMITTER_NAME"))
485 strvec_pushf(&cld.env, "GIT_COMMITTER_NAME=%s", user);
486 if (!getenv("GIT_COMMITTER_EMAIL"))
487 strvec_pushf(&cld.env,
488 "GIT_COMMITTER_EMAIL=%s@http.%s", user, host);
490 strvec_pushv(&cld.args, argv);
491 if (buffer_input || gzipped_request || req_len >= 0)
492 cld.in = -1;
493 cld.git_cmd = 1;
494 cld.clean_on_exit = 1;
495 cld.wait_after_clean = 1;
496 if (start_command(&cld))
497 exit(1);
499 close(1);
500 if (gzipped_request)
501 inflate_request(argv[0], cld.in, buffer_input, req_len);
502 else if (buffer_input)
503 copy_request(argv[0], cld.in, req_len);
504 else if (req_len >= 0)
505 pipe_fixed_length(argv[0], cld.in, req_len);
506 else
507 close(0);
509 if (finish_command(&cld))
510 exit(1);
513 static int show_text_ref(const char *name, const struct object_id *oid,
514 int flag UNUSED, void *cb_data)
516 const char *name_nons = strip_namespace(name);
517 struct strbuf *buf = cb_data;
518 struct object *o = parse_object(the_repository, oid);
519 if (!o)
520 return 0;
522 strbuf_addf(buf, "%s\t%s\n", oid_to_hex(oid), name_nons);
523 if (o->type == OBJ_TAG) {
524 o = deref_tag(the_repository, o, name, 0);
525 if (!o)
526 return 0;
527 strbuf_addf(buf, "%s\t%s^{}\n", oid_to_hex(&o->oid),
528 name_nons);
530 return 0;
533 static void get_info_refs(struct strbuf *hdr, char *arg UNUSED)
535 const char *service_name = get_parameter("service");
536 struct strbuf buf = STRBUF_INIT;
538 hdr_nocache(hdr);
540 if (service_name) {
541 const char *argv[] = {NULL /* service name */,
542 "--http-backend-info-refs",
543 ".", NULL};
544 struct rpc_service *svc = select_service(hdr, service_name);
546 strbuf_addf(&buf, "application/x-git-%s-advertisement",
547 svc->name);
548 hdr_str(hdr, content_type, buf.buf);
549 end_headers(hdr);
552 if (determine_protocol_version_server() != protocol_v2) {
553 packet_write_fmt(1, "# service=git-%s\n", svc->name);
554 packet_flush(1);
557 argv[0] = svc->name;
558 run_service(argv, 0);
560 } else {
561 select_getanyfile(hdr);
562 for_each_namespaced_ref(NULL, show_text_ref, &buf);
563 send_strbuf(hdr, "text/plain", &buf);
565 strbuf_release(&buf);
568 static int show_head_ref(const char *refname, const struct object_id *oid,
569 int flag, void *cb_data)
571 struct strbuf *buf = cb_data;
573 if (flag & REF_ISSYMREF) {
574 const char *target = resolve_ref_unsafe(refname,
575 RESOLVE_REF_READING,
576 NULL, NULL);
578 if (target)
579 strbuf_addf(buf, "ref: %s\n", strip_namespace(target));
580 } else {
581 strbuf_addf(buf, "%s\n", oid_to_hex(oid));
584 return 0;
587 static void get_head(struct strbuf *hdr, char *arg UNUSED)
589 struct strbuf buf = STRBUF_INIT;
591 select_getanyfile(hdr);
592 head_ref_namespaced(show_head_ref, &buf);
593 send_strbuf(hdr, "text/plain", &buf);
594 strbuf_release(&buf);
597 static void get_info_packs(struct strbuf *hdr, char *arg UNUSED)
599 size_t objdirlen = strlen(get_object_directory());
600 struct strbuf buf = STRBUF_INIT;
601 struct packed_git *p;
602 size_t cnt = 0;
604 select_getanyfile(hdr);
605 for (p = get_all_packs(the_repository); p; p = p->next) {
606 if (p->pack_local)
607 cnt++;
610 strbuf_grow(&buf, cnt * 53 + 2);
611 for (p = get_all_packs(the_repository); p; p = p->next) {
612 if (p->pack_local)
613 strbuf_addf(&buf, "P %s\n", p->pack_name + objdirlen + 6);
615 strbuf_addch(&buf, '\n');
617 hdr_nocache(hdr);
618 send_strbuf(hdr, "text/plain; charset=utf-8", &buf);
619 strbuf_release(&buf);
622 static void check_content_type(struct strbuf *hdr, const char *accepted_type)
624 const char *actual_type = getenv("CONTENT_TYPE");
626 if (!actual_type)
627 actual_type = "";
629 if (strcmp(actual_type, accepted_type)) {
630 http_status(hdr, 415, "Unsupported Media Type");
631 hdr_nocache(hdr);
632 end_headers(hdr);
633 format_write(1,
634 "Expected POST with Content-Type '%s',"
635 " but received '%s' instead.\n",
636 accepted_type, actual_type);
637 exit(0);
641 static void service_rpc(struct strbuf *hdr, char *service_name)
643 struct strvec argv = STRVEC_INIT;
644 struct rpc_service *svc = select_service(hdr, service_name);
645 struct strbuf buf = STRBUF_INIT;
647 strvec_push(&argv, svc->name);
648 if (strcmp(service_name, "git-upload-archive"))
649 strvec_push(&argv, "--stateless-rpc");
650 strvec_push(&argv, ".");
652 strbuf_reset(&buf);
653 strbuf_addf(&buf, "application/x-git-%s-request", svc->name);
654 check_content_type(hdr, buf.buf);
656 hdr_nocache(hdr);
658 strbuf_reset(&buf);
659 strbuf_addf(&buf, "application/x-git-%s-result", svc->name);
660 hdr_str(hdr, content_type, buf.buf);
662 end_headers(hdr);
664 run_service(argv.v, svc->buffer_input);
665 strbuf_release(&buf);
666 strvec_clear(&argv);
669 static int dead;
670 static NORETURN void die_webcgi(const char *err, va_list params)
672 if (dead <= 1) {
673 struct strbuf hdr = STRBUF_INIT;
674 report_fn die_message_fn = get_die_message_routine();
676 die_message_fn(err, params);
678 http_status(&hdr, 500, "Internal Server Error");
679 hdr_nocache(&hdr);
680 end_headers(&hdr);
682 exit(0); /* we successfully reported a failure ;-) */
685 static int die_webcgi_recursing(void)
687 return dead++ > 1;
690 static char* getdir(void)
692 struct strbuf buf = STRBUF_INIT;
693 char *pathinfo = getenv("PATH_INFO");
694 char *root = getenv("GIT_PROJECT_ROOT");
695 char *path = getenv("PATH_TRANSLATED");
697 if (root && *root) {
698 if (!pathinfo || !*pathinfo)
699 die("GIT_PROJECT_ROOT is set but PATH_INFO is not");
700 if (daemon_avoid_alias(pathinfo))
701 die("'%s': aliased", pathinfo);
702 end_url_with_slash(&buf, root);
703 if (pathinfo[0] == '/')
704 pathinfo++;
705 strbuf_addstr(&buf, pathinfo);
706 return strbuf_detach(&buf, NULL);
707 } else if (path && *path) {
708 return xstrdup(path);
709 } else
710 die("No GIT_PROJECT_ROOT or PATH_TRANSLATED from server");
711 return NULL;
714 static struct service_cmd {
715 const char *method;
716 const char *pattern;
717 void (*imp)(struct strbuf *, char *);
718 } services[] = {
719 {"GET", "/HEAD$", get_head},
720 {"GET", "/info/refs$", get_info_refs},
721 {"GET", "/objects/info/alternates$", get_text_file},
722 {"GET", "/objects/info/http-alternates$", get_text_file},
723 {"GET", "/objects/info/packs$", get_info_packs},
724 {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{38}$", get_loose_object},
725 {"GET", "/objects/[0-9a-f]{2}/[0-9a-f]{62}$", get_loose_object},
726 {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.pack$", get_pack_file},
727 {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.pack$", get_pack_file},
728 {"GET", "/objects/pack/pack-[0-9a-f]{40}\\.idx$", get_idx_file},
729 {"GET", "/objects/pack/pack-[0-9a-f]{64}\\.idx$", get_idx_file},
731 {"POST", "/git-upload-pack$", service_rpc},
732 {"POST", "/git-upload-archive$", service_rpc},
733 {"POST", "/git-receive-pack$", service_rpc}
736 static int bad_request(struct strbuf *hdr, const struct service_cmd *c)
738 const char *proto = getenv("SERVER_PROTOCOL");
740 if (proto && !strcmp(proto, "HTTP/1.1")) {
741 http_status(hdr, 405, "Method Not Allowed");
742 hdr_str(hdr, "Allow",
743 !strcmp(c->method, "GET") ? "GET, HEAD" : c->method);
744 } else
745 http_status(hdr, 400, "Bad Request");
746 hdr_nocache(hdr);
747 end_headers(hdr);
748 return 0;
751 int cmd_main(int argc UNUSED, const char **argv UNUSED)
753 char *method = getenv("REQUEST_METHOD");
754 const char *proto_header;
755 char *dir;
756 struct service_cmd *cmd = NULL;
757 char *cmd_arg = NULL;
758 int i;
759 struct strbuf hdr = STRBUF_INIT;
761 set_die_routine(die_webcgi);
762 set_die_is_recursing_routine(die_webcgi_recursing);
764 if (!method)
765 die("No REQUEST_METHOD from server");
766 if (!strcmp(method, "HEAD"))
767 method = "GET";
768 dir = getdir();
770 for (i = 0; i < ARRAY_SIZE(services); i++) {
771 struct service_cmd *c = &services[i];
772 regex_t re;
773 regmatch_t out[1];
774 int ret;
776 if (regcomp(&re, c->pattern, REG_EXTENDED))
777 die("Bogus regex in service table: %s", c->pattern);
778 ret = regexec(&re, dir, 1, out, 0);
779 regfree(&re);
781 if (!ret) {
782 size_t n;
784 if (strcmp(method, c->method))
785 return bad_request(&hdr, c);
787 cmd = c;
788 n = out[0].rm_eo - out[0].rm_so;
789 cmd_arg = xmemdupz(dir + out[0].rm_so + 1, n - 1);
790 dir[out[0].rm_so] = 0;
791 break;
795 if (!cmd)
796 not_found(&hdr, "Request not supported: '%s'", dir);
798 setup_path();
799 if (!enter_repo(dir, 0))
800 not_found(&hdr, "Not a git repository: '%s'", dir);
801 if (!getenv("GIT_HTTP_EXPORT_ALL") &&
802 access("git-daemon-export-ok", F_OK) )
803 not_found(&hdr, "Repository not exported: '%s'", dir);
804 free(dir);
806 http_config();
807 max_request_buffer = git_env_ulong("GIT_HTTP_MAX_REQUEST_BUFFER",
808 max_request_buffer);
809 proto_header = getenv("HTTP_GIT_PROTOCOL");
810 if (proto_header)
811 setenv(GIT_PROTOCOL_ENVIRONMENT, proto_header, 0);
813 cmd->imp(&hdr, cmd_arg);
814 free(cmd_arg);
815 return 0;