9 #include "run-command.h"
11 #include "string-list.h"
13 #include "argv-array.h"
14 #include "credential.h"
15 #include "sha1-array.h"
16 #include "send-pack.h"
20 static struct remote *remote;
21 /* always ends with a trailing slash */
22 static struct strbuf url = STRBUF_INIT;
28 struct string_list deepen_not;
29 struct string_list push_options;
31 unsigned progress : 1,
32 check_self_contained_and_connected : 1,
38 /* One of the SEND_PACK_PUSH_CERT_* constants. */
44 static struct options options;
45 static struct string_list cas_options = STRING_LIST_INIT_DUP;
47 static int set_option(const char *name, const char *value)
49 if (!strcmp(name, "verbosity")) {
51 int v = strtol(value, &end, 10);
52 if (value == end || *end)
54 options.verbosity = v;
57 else if (!strcmp(name, "progress")) {
58 if (!strcmp(value, "true"))
60 else if (!strcmp(value, "false"))
66 else if (!strcmp(name, "depth")) {
68 unsigned long v = strtoul(value, &end, 10);
69 if (value == end || *end)
74 else if (!strcmp(name, "deepen-since")) {
75 options.deepen_since = xstrdup(value);
78 else if (!strcmp(name, "deepen-not")) {
79 string_list_append(&options.deepen_not, value);
82 else if (!strcmp(name, "deepen-relative")) {
83 if (!strcmp(value, "true"))
84 options.deepen_relative = 1;
85 else if (!strcmp(value, "false"))
86 options.deepen_relative = 0;
91 else if (!strcmp(name, "followtags")) {
92 if (!strcmp(value, "true"))
93 options.followtags = 1;
94 else if (!strcmp(value, "false"))
95 options.followtags = 0;
100 else if (!strcmp(name, "dry-run")) {
101 if (!strcmp(value, "true"))
103 else if (!strcmp(value, "false"))
109 else if (!strcmp(name, "check-connectivity")) {
110 if (!strcmp(value, "true"))
111 options.check_self_contained_and_connected = 1;
112 else if (!strcmp(value, "false"))
113 options.check_self_contained_and_connected = 0;
118 else if (!strcmp(name, "cas")) {
119 struct strbuf val = STRBUF_INIT;
120 strbuf_addf(&val, "--" CAS_OPT_NAME "=%s", value);
121 string_list_append(&cas_options, val.buf);
122 strbuf_release(&val);
124 } else if (!strcmp(name, "cloning")) {
125 if (!strcmp(value, "true"))
127 else if (!strcmp(value, "false"))
132 } else if (!strcmp(name, "update-shallow")) {
133 if (!strcmp(value, "true"))
134 options.update_shallow = 1;
135 else if (!strcmp(value, "false"))
136 options.update_shallow = 0;
140 } else if (!strcmp(name, "pushcert")) {
141 if (!strcmp(value, "true"))
142 options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
143 else if (!strcmp(value, "false"))
144 options.push_cert = SEND_PACK_PUSH_CERT_NEVER;
145 else if (!strcmp(value, "if-asked"))
146 options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
150 } else if (!strcmp(name, "push-option")) {
152 string_list_append(&options.push_options, value);
154 struct strbuf unquoted = STRBUF_INIT;
155 if (unquote_c_style(&unquoted, value, NULL) < 0)
156 die("invalid quoting in push-option value");
157 string_list_append_nodup(&options.push_options,
158 strbuf_detach(&unquoted, NULL));
162 #if LIBCURL_VERSION_NUM >= 0x070a08
163 } else if (!strcmp(name, "family")) {
164 if (!strcmp(value, "ipv4"))
165 git_curl_ipresolve = CURL_IPRESOLVE_V4;
166 else if (!strcmp(value, "ipv6"))
167 git_curl_ipresolve = CURL_IPRESOLVE_V6;
168 else if (!strcmp(value, "all"))
169 git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
173 #endif /* LIBCURL_VERSION_NUM >= 0x070a08 */
174 } else if (!strcmp(name, "from-promisor")) {
175 options.from_promisor = 1;
177 } else if (!strcmp(name, "no-dependents")) {
178 options.no_dependents = 1;
180 } else if (!strcmp(name, "filter")) {
181 options.filter = xstrdup(value);
184 return 1 /* unsupported */;
194 struct oid_array shallow;
195 enum protocol_version version;
196 unsigned proto_git : 1;
198 static struct discovery *last_discovery;
200 static struct ref *parse_git_refs(struct discovery *heads, int for_push)
202 struct ref *list = NULL;
203 struct packet_reader reader;
205 packet_reader_init(&reader, -1, heads->buf, heads->len,
206 PACKET_READ_CHOMP_NEWLINE |
207 PACKET_READ_GENTLE_ON_EOF |
208 PACKET_READ_DIE_ON_ERR_PACKET);
210 heads->version = discover_version(&reader);
211 switch (heads->version) {
214 * Do nothing. This isn't a list of refs but rather a
215 * capability advertisement. Client would have run
216 * 'stateless-connect' so we'll dump this capability listing
217 * and let them request the refs themselves.
222 get_remote_heads(&reader, &list, for_push ? REF_NORMAL : 0,
223 NULL, &heads->shallow);
225 case protocol_unknown_version:
226 BUG("unknown protocol version");
232 static struct ref *parse_info_refs(struct discovery *heads)
234 char *data, *start, *mid;
238 struct ref *refs = NULL;
239 struct ref *ref = NULL;
240 struct ref *last_ref = NULL;
245 while (i < heads->len) {
251 if (data[i] == '\n') {
252 if (mid - start != 40)
253 die("%sinfo/refs not valid: is this a git repository?",
257 ref = alloc_ref(ref_name);
258 get_oid_hex(start, &ref->old_oid);
262 last_ref->next = ref;
269 ref = alloc_ref("HEAD");
270 if (!http_fetch_ref(url.buf, ref) &&
271 !resolve_remote_symref(ref, refs)) {
281 static void free_discovery(struct discovery *d)
284 if (d == last_discovery)
285 last_discovery = NULL;
286 free(d->shallow.oid);
294 static int show_http_message(struct strbuf *type, struct strbuf *charset,
300 * We only show text/plain parts, as other types are likely
301 * to be ugly to look at on the user's terminal.
303 if (strcmp(type->buf, "text/plain"))
306 strbuf_reencode(msg, charset->buf, get_log_output_encoding());
314 eol = strchrnul(p, '\n');
315 fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p);
321 static int get_protocol_http_header(enum protocol_version version,
322 struct strbuf *header)
325 strbuf_addf(header, GIT_PROTOCOL_HEADER ": version=%d",
334 static struct discovery *discover_refs(const char *service, int for_push)
336 struct strbuf exp = STRBUF_INIT;
337 struct strbuf type = STRBUF_INIT;
338 struct strbuf charset = STRBUF_INIT;
339 struct strbuf buffer = STRBUF_INIT;
340 struct strbuf refs_url = STRBUF_INIT;
341 struct strbuf effective_url = STRBUF_INIT;
342 struct strbuf protocol_header = STRBUF_INIT;
343 struct string_list extra_headers = STRING_LIST_INIT_DUP;
344 struct discovery *last = last_discovery;
345 int http_ret, maybe_smart = 0;
346 struct http_get_options http_options;
347 enum protocol_version version = get_protocol_version_config();
349 if (last && !strcmp(service, last->service))
351 free_discovery(last);
353 strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
354 if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
355 git_env_bool("GIT_SMART_HTTP", 1)) {
357 if (!strchr(url.buf, '?'))
358 strbuf_addch(&refs_url, '?');
360 strbuf_addch(&refs_url, '&');
361 strbuf_addf(&refs_url, "service=%s", service);
365 * NEEDSWORK: If we are trying to use protocol v2 and we are planning
366 * to perform a push, then fallback to v0 since the client doesn't know
367 * how to push yet using v2.
369 if (version == protocol_v2 && !strcmp("git-receive-pack", service))
370 version = protocol_v0;
372 /* Add the extra Git-Protocol header */
373 if (get_protocol_http_header(version, &protocol_header))
374 string_list_append(&extra_headers, protocol_header.buf);
376 memset(&http_options, 0, sizeof(http_options));
377 http_options.content_type = &type;
378 http_options.charset = &charset;
379 http_options.effective_url = &effective_url;
380 http_options.base_url = &url;
381 http_options.extra_headers = &extra_headers;
382 http_options.initial_request = 1;
383 http_options.no_cache = 1;
385 http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
389 case HTTP_MISSING_TARGET:
390 show_http_message(&type, &charset, &buffer);
391 die("repository '%s' not found", url.buf);
393 show_http_message(&type, &charset, &buffer);
394 die("Authentication failed for '%s'", url.buf);
396 show_http_message(&type, &charset, &buffer);
397 die("unable to access '%s': %s", url.buf, curl_errorstr);
400 if (options.verbosity && !starts_with(refs_url.buf, url.buf))
401 warning(_("redirecting to %s"), url.buf);
403 last= xcalloc(1, sizeof(*last_discovery));
404 last->service = xstrdup(service);
405 last->buf_alloc = strbuf_detach(&buffer, &last->len);
406 last->buf = last->buf_alloc;
408 strbuf_addf(&exp, "application/x-%s-advertisement", service);
410 (5 <= last->len && last->buf[4] == '#') &&
411 !strbuf_cmp(&exp, &type)) {
412 struct packet_reader reader;
413 packet_reader_init(&reader, -1, last->buf, last->len,
414 PACKET_READ_CHOMP_NEWLINE |
415 PACKET_READ_DIE_ON_ERR_PACKET);
418 * smart HTTP response; validate that the service
419 * pkt-line matches our request.
421 if (packet_reader_read(&reader) != PACKET_READ_NORMAL)
422 die("invalid server response; expected service, got flush packet");
425 strbuf_addf(&exp, "# service=%s", service);
426 if (strcmp(reader.line, exp.buf))
427 die("invalid server response; got '%s'", reader.line);
428 strbuf_release(&exp);
430 /* The header can include additional metadata lines, up
431 * until a packet flush marker. Ignore these now, but
432 * in the future we might start to scan them.
435 packet_reader_read(&reader);
436 if (reader.pktlen <= 0) {
441 last->buf = reader.src_buffer;
442 last->len = reader.src_len;
445 } else if (maybe_smart &&
446 last->len > 5 && starts_with(last->buf + 4, "version 2")) {
451 last->refs = parse_git_refs(last, for_push);
453 last->refs = parse_info_refs(last);
455 strbuf_release(&refs_url);
456 strbuf_release(&exp);
457 strbuf_release(&type);
458 strbuf_release(&charset);
459 strbuf_release(&effective_url);
460 strbuf_release(&buffer);
461 strbuf_release(&protocol_header);
462 string_list_clear(&extra_headers, 0);
463 last_discovery = last;
467 static struct ref *get_refs(int for_push)
469 struct discovery *heads;
472 heads = discover_refs("git-receive-pack", for_push);
474 heads = discover_refs("git-upload-pack", for_push);
479 static void output_refs(struct ref *refs)
482 for (posn = refs; posn; posn = posn->next) {
484 printf("@%s %s\n", posn->symref, posn->name);
486 printf("%s %s\n", oid_to_hex(&posn->old_oid), posn->name);
493 const char *service_name;
495 struct strbuf *stdin_preamble;
497 char *hdr_content_type;
499 char *protocol_header;
507 struct strbuf result;
508 unsigned gzip_request : 1;
509 unsigned initial_buffer : 1;
512 static size_t rpc_out(void *ptr, size_t eltsize,
513 size_t nmemb, void *buffer_)
515 size_t max = eltsize * nmemb;
516 struct rpc_state *rpc = buffer_;
517 size_t avail = rpc->len - rpc->pos;
520 rpc->initial_buffer = 0;
521 avail = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
530 memcpy(ptr, rpc->buf + rpc->pos, avail);
535 #ifndef NO_CURL_IOCTL
536 static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
538 struct rpc_state *rpc = clientp;
544 case CURLIOCMD_RESTARTREAD:
545 if (rpc->initial_buffer) {
549 error("unable to rewind rpc post data - try increasing http.postBuffer");
550 return CURLIOE_FAILRESTART;
553 return CURLIOE_UNKNOWNCMD;
559 struct rpc_state *rpc;
560 struct active_request_slot *slot;
564 * A callback for CURLOPT_WRITEFUNCTION. The return value is the bytes consumed
567 static size_t rpc_in(char *ptr, size_t eltsize,
568 size_t nmemb, void *buffer_)
570 size_t size = eltsize * nmemb;
571 struct rpc_in_data *data = buffer_;
574 if (curl_easy_getinfo(data->slot->curl, CURLINFO_RESPONSE_CODE,
575 &response_code) != CURLE_OK)
577 if (response_code >= 300)
580 data->rpc->any_written = 1;
581 write_or_die(data->rpc->in, ptr, size);
585 static int run_slot(struct active_request_slot *slot,
586 struct slot_results *results)
589 struct slot_results results_buf;
592 results = &results_buf;
594 err = run_one_slot(slot, results);
596 if (err != HTTP_OK && err != HTTP_REAUTH) {
597 struct strbuf msg = STRBUF_INIT;
598 if (results->http_code && results->http_code != 200)
599 strbuf_addf(&msg, "HTTP %ld", results->http_code);
600 if (results->curl_result != CURLE_OK) {
602 strbuf_addch(&msg, ' ');
603 strbuf_addf(&msg, "curl %d", results->curl_result);
604 if (curl_errorstr[0]) {
605 strbuf_addch(&msg, ' ');
606 strbuf_addstr(&msg, curl_errorstr);
609 error("RPC failed; %s", msg.buf);
610 strbuf_release(&msg);
616 static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
618 struct active_request_slot *slot;
619 struct curl_slist *headers = http_copy_default_headers();
620 struct strbuf buf = STRBUF_INIT;
623 slot = get_active_slot();
625 headers = curl_slist_append(headers, rpc->hdr_content_type);
626 headers = curl_slist_append(headers, rpc->hdr_accept);
628 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
629 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
630 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
631 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
632 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
633 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
634 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
635 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
636 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
638 err = run_slot(slot, results);
640 curl_slist_free_all(headers);
641 strbuf_release(&buf);
645 static curl_off_t xcurl_off_t(size_t len)
647 uintmax_t size = len;
648 if (size > maximum_signed_value_of_type(curl_off_t))
649 die("cannot handle pushes this big");
650 return (curl_off_t)size;
653 static int post_rpc(struct rpc_state *rpc)
655 struct active_request_slot *slot;
656 struct curl_slist *headers = http_copy_default_headers();
657 int use_gzip = rpc->gzip_request;
658 char *gzip_body = NULL;
659 size_t gzip_size = 0;
660 int err, large_request = 0;
661 int needs_100_continue = 0;
662 struct rpc_in_data rpc_in_data;
664 /* Try to load the entire request, if we can fit it into the
665 * allocated buffer space we can use HTTP/1.0 and avoid the
666 * chunked encoding mess.
669 size_t left = rpc->alloc - rpc->len;
670 char *buf = rpc->buf + rpc->len;
673 if (left < LARGE_PACKET_MAX) {
679 n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
686 struct slot_results results;
689 err = probe_rpc(rpc, &results);
690 if (err == HTTP_REAUTH)
691 credential_fill(&http_auth);
692 } while (err == HTTP_REAUTH);
696 if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
697 needs_100_continue = 1;
700 headers = curl_slist_append(headers, rpc->hdr_content_type);
701 headers = curl_slist_append(headers, rpc->hdr_accept);
702 headers = curl_slist_append(headers, needs_100_continue ?
703 "Expect: 100-continue" : "Expect:");
705 /* Add the extra Git-Protocol header */
706 if (rpc->protocol_header)
707 headers = curl_slist_append(headers, rpc->protocol_header);
710 slot = get_active_slot();
712 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
713 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
714 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
715 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
718 /* The request body is large and the size cannot be predicted.
719 * We must use chunked encoding to send it.
721 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
722 rpc->initial_buffer = 1;
723 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
724 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
725 #ifndef NO_CURL_IOCTL
726 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
727 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
729 if (options.verbosity > 1) {
730 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
734 } else if (gzip_body) {
736 * If we are looping to retry authentication, then the previous
737 * run will have set up the headers and gzip buffer already,
738 * and we just need to send it.
740 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
741 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
743 } else if (use_gzip && 1024 < rpc->len) {
744 /* The client backend isn't giving us compressed data so
745 * we can try to deflate it ourselves, this may save on
751 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
752 gzip_size = git_deflate_bound(&stream, rpc->len);
753 gzip_body = xmalloc(gzip_size);
755 stream.next_in = (unsigned char *)rpc->buf;
756 stream.avail_in = rpc->len;
757 stream.next_out = (unsigned char *)gzip_body;
758 stream.avail_out = gzip_size;
760 ret = git_deflate(&stream, Z_FINISH);
761 if (ret != Z_STREAM_END)
762 die("cannot deflate request; zlib deflate error %d", ret);
764 ret = git_deflate_end_gently(&stream);
766 die("cannot deflate request; zlib end error %d", ret);
768 gzip_size = stream.total_out;
770 headers = curl_slist_append(headers, "Content-Encoding: gzip");
771 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
772 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
774 if (options.verbosity > 1) {
775 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
777 (unsigned long)rpc->len, (unsigned long)gzip_size);
781 /* We know the complete request size in advance, use the
782 * more normal Content-Length approach.
784 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
785 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len));
786 if (options.verbosity > 1) {
787 fprintf(stderr, "POST %s (%lu bytes)\n",
788 rpc->service_name, (unsigned long)rpc->len);
793 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
794 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
795 rpc_in_data.rpc = rpc;
796 rpc_in_data.slot = slot;
797 curl_easy_setopt(slot->curl, CURLOPT_FILE, &rpc_in_data);
798 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
801 rpc->any_written = 0;
802 err = run_slot(slot, NULL);
803 if (err == HTTP_REAUTH && !large_request) {
804 credential_fill(&http_auth);
810 if (!rpc->any_written)
813 curl_slist_free_all(headers);
818 static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
820 const char *svc = rpc->service_name;
821 struct strbuf buf = STRBUF_INIT;
822 struct strbuf *preamble = rpc->stdin_preamble;
823 struct child_process client = CHILD_PROCESS_INIT;
829 client.argv = rpc->argv;
830 if (start_command(&client))
833 write_or_die(client.in, preamble->buf, preamble->len);
835 write_or_die(client.in, heads->buf, heads->len);
837 rpc->alloc = http_post_buffer;
838 rpc->buf = xmalloc(rpc->alloc);
840 rpc->out = client.out;
841 strbuf_init(&rpc->result, 0);
843 strbuf_addf(&buf, "%s%s", url.buf, svc);
844 rpc->service_url = strbuf_detach(&buf, NULL);
846 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
847 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
849 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
850 rpc->hdr_accept = strbuf_detach(&buf, NULL);
852 if (get_protocol_http_header(heads->version, &buf))
853 rpc->protocol_header = strbuf_detach(&buf, NULL);
855 rpc->protocol_header = NULL;
858 int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
863 err |= post_rpc(rpc);
869 strbuf_read(&rpc->result, client.out, 0);
873 if (xread(client.out, buf, sizeof(buf)) <= 0)
880 err |= finish_command(&client);
881 free(rpc->service_url);
882 free(rpc->hdr_content_type);
883 free(rpc->hdr_accept);
884 free(rpc->protocol_header);
886 strbuf_release(&buf);
890 static int fetch_dumb(int nr_heads, struct ref **to_fetch)
892 struct walker *walker;
896 ALLOC_ARRAY(targets, nr_heads);
897 if (options.depth || options.deepen_since)
898 die("dumb http transport does not support shallow capabilities");
899 for (i = 0; i < nr_heads; i++)
900 targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
902 walker = get_http_walker(url.buf);
903 walker->get_verbosely = options.verbosity >= 3;
904 walker->get_recover = 0;
905 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
908 for (i = 0; i < nr_heads; i++)
912 return ret ? error("fetch failed.") : 0;
915 static int fetch_git(struct discovery *heads,
916 int nr_heads, struct ref **to_fetch)
918 struct rpc_state rpc;
919 struct strbuf preamble = STRBUF_INIT;
921 struct argv_array args = ARGV_ARRAY_INIT;
923 argv_array_pushl(&args, "fetch-pack", "--stateless-rpc",
924 "--stdin", "--lock-pack", NULL);
925 if (options.followtags)
926 argv_array_push(&args, "--include-tag");
928 argv_array_push(&args, "--thin");
929 if (options.verbosity >= 3)
930 argv_array_pushl(&args, "-v", "-v", NULL);
931 if (options.check_self_contained_and_connected)
932 argv_array_push(&args, "--check-self-contained-and-connected");
934 argv_array_push(&args, "--cloning");
935 if (options.update_shallow)
936 argv_array_push(&args, "--update-shallow");
937 if (!options.progress)
938 argv_array_push(&args, "--no-progress");
940 argv_array_pushf(&args, "--depth=%lu", options.depth);
941 if (options.deepen_since)
942 argv_array_pushf(&args, "--shallow-since=%s", options.deepen_since);
943 for (i = 0; i < options.deepen_not.nr; i++)
944 argv_array_pushf(&args, "--shallow-exclude=%s",
945 options.deepen_not.items[i].string);
946 if (options.deepen_relative && options.depth)
947 argv_array_push(&args, "--deepen-relative");
948 if (options.from_promisor)
949 argv_array_push(&args, "--from-promisor");
950 if (options.no_dependents)
951 argv_array_push(&args, "--no-dependents");
953 argv_array_pushf(&args, "--filter=%s", options.filter);
954 argv_array_push(&args, url.buf);
956 for (i = 0; i < nr_heads; i++) {
957 struct ref *ref = to_fetch[i];
959 die("cannot fetch by sha1 over smart http");
960 packet_buf_write(&preamble, "%s %s\n",
961 oid_to_hex(&ref->old_oid), ref->name);
963 packet_buf_flush(&preamble);
965 memset(&rpc, 0, sizeof(rpc));
966 rpc.service_name = "git-upload-pack",
967 rpc.argv = args.argv;
968 rpc.stdin_preamble = &preamble;
969 rpc.gzip_request = 1;
971 err = rpc_service(&rpc, heads);
973 write_or_die(1, rpc.result.buf, rpc.result.len);
974 strbuf_release(&rpc.result);
975 strbuf_release(&preamble);
976 argv_array_clear(&args);
980 static int fetch(int nr_heads, struct ref **to_fetch)
982 struct discovery *d = discover_refs("git-upload-pack", 0);
984 return fetch_git(d, nr_heads, to_fetch);
986 return fetch_dumb(nr_heads, to_fetch);
989 static void parse_fetch(struct strbuf *buf)
991 struct ref **to_fetch = NULL;
992 struct ref *list_head = NULL;
993 struct ref **list = &list_head;
994 int alloc_heads = 0, nr_heads = 0;
998 if (skip_prefix(buf->buf, "fetch ", &p)) {
1001 struct object_id old_oid;
1003 if (get_oid_hex(p, &old_oid))
1004 die("protocol error: expected sha/ref, got %s'", p);
1005 if (p[GIT_SHA1_HEXSZ] == ' ')
1006 name = p + GIT_SHA1_HEXSZ + 1;
1007 else if (!p[GIT_SHA1_HEXSZ])
1010 die("protocol error: expected sha/ref, got %s'", p);
1012 ref = alloc_ref(name);
1013 oidcpy(&ref->old_oid, &old_oid);
1018 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
1019 to_fetch[nr_heads++] = ref;
1022 die("http transport does not support %s", buf->buf);
1025 if (strbuf_getline_lf(buf, stdin) == EOF)
1031 if (fetch(nr_heads, to_fetch))
1032 exit(128); /* error already reported */
1033 free_refs(list_head);
1041 static int push_dav(int nr_spec, char **specs)
1043 struct child_process child = CHILD_PROCESS_INIT;
1047 argv_array_push(&child.args, "http-push");
1048 argv_array_push(&child.args, "--helper-status");
1049 if (options.dry_run)
1050 argv_array_push(&child.args, "--dry-run");
1051 if (options.verbosity > 1)
1052 argv_array_push(&child.args, "--verbose");
1053 argv_array_push(&child.args, url.buf);
1054 for (i = 0; i < nr_spec; i++)
1055 argv_array_push(&child.args, specs[i]);
1057 if (run_command(&child))
1058 die("git-http-push failed");
1062 static int push_git(struct discovery *heads, int nr_spec, char **specs)
1064 struct rpc_state rpc;
1066 struct argv_array args;
1067 struct string_list_item *cas_option;
1068 struct strbuf preamble = STRBUF_INIT;
1070 argv_array_init(&args);
1071 argv_array_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
1075 argv_array_push(&args, "--thin");
1076 if (options.dry_run)
1077 argv_array_push(&args, "--dry-run");
1078 if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
1079 argv_array_push(&args, "--signed=yes");
1080 else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
1081 argv_array_push(&args, "--signed=if-asked");
1082 if (options.verbosity == 0)
1083 argv_array_push(&args, "--quiet");
1084 else if (options.verbosity > 1)
1085 argv_array_push(&args, "--verbose");
1086 for (i = 0; i < options.push_options.nr; i++)
1087 argv_array_pushf(&args, "--push-option=%s",
1088 options.push_options.items[i].string);
1089 argv_array_push(&args, options.progress ? "--progress" : "--no-progress");
1090 for_each_string_list_item(cas_option, &cas_options)
1091 argv_array_push(&args, cas_option->string);
1092 argv_array_push(&args, url.buf);
1094 argv_array_push(&args, "--stdin");
1095 for (i = 0; i < nr_spec; i++)
1096 packet_buf_write(&preamble, "%s\n", specs[i]);
1097 packet_buf_flush(&preamble);
1099 memset(&rpc, 0, sizeof(rpc));
1100 rpc.service_name = "git-receive-pack",
1101 rpc.argv = args.argv;
1102 rpc.stdin_preamble = &preamble;
1104 err = rpc_service(&rpc, heads);
1106 write_or_die(1, rpc.result.buf, rpc.result.len);
1107 strbuf_release(&rpc.result);
1108 strbuf_release(&preamble);
1109 argv_array_clear(&args);
1113 static int push(int nr_spec, char **specs)
1115 struct discovery *heads = discover_refs("git-receive-pack", 1);
1118 if (heads->proto_git)
1119 ret = push_git(heads, nr_spec, specs);
1121 ret = push_dav(nr_spec, specs);
1122 free_discovery(heads);
1126 static void parse_push(struct strbuf *buf)
1128 char **specs = NULL;
1129 int alloc_spec = 0, nr_spec = 0, i, ret;
1132 if (starts_with(buf->buf, "push ")) {
1133 ALLOC_GROW(specs, nr_spec + 1, alloc_spec);
1134 specs[nr_spec++] = xstrdup(buf->buf + 5);
1137 die("http transport does not support %s", buf->buf);
1140 if (strbuf_getline_lf(buf, stdin) == EOF)
1146 ret = push(nr_spec, specs);
1151 exit(128); /* error already reported */
1154 for (i = 0; i < nr_spec; i++)
1160 * Used to represent the state of a connection to an HTTP server when
1161 * communicating using git's wire-protocol version 2.
1163 struct proxy_state {
1166 struct curl_slist *headers;
1167 struct strbuf request_buffer;
1170 struct packet_reader reader;
1175 static void proxy_state_init(struct proxy_state *p, const char *service_name,
1176 enum protocol_version version)
1178 struct strbuf buf = STRBUF_INIT;
1180 memset(p, 0, sizeof(*p));
1181 p->service_name = xstrdup(service_name);
1185 strbuf_init(&p->request_buffer, 0);
1187 strbuf_addf(&buf, "%s%s", url.buf, p->service_name);
1188 p->service_url = strbuf_detach(&buf, NULL);
1190 p->headers = http_copy_default_headers();
1192 strbuf_addf(&buf, "Content-Type: application/x-%s-request", p->service_name);
1193 p->headers = curl_slist_append(p->headers, buf.buf);
1196 strbuf_addf(&buf, "Accept: application/x-%s-result", p->service_name);
1197 p->headers = curl_slist_append(p->headers, buf.buf);
1200 p->headers = curl_slist_append(p->headers, "Transfer-Encoding: chunked");
1202 /* Add the Git-Protocol header */
1203 if (get_protocol_http_header(version, &buf))
1204 p->headers = curl_slist_append(p->headers, buf.buf);
1206 packet_reader_init(&p->reader, p->in, NULL, 0,
1207 PACKET_READ_GENTLE_ON_EOF |
1208 PACKET_READ_DIE_ON_ERR_PACKET);
1210 strbuf_release(&buf);
1213 static void proxy_state_clear(struct proxy_state *p)
1215 free(p->service_name);
1216 free(p->service_url);
1217 curl_slist_free_all(p->headers);
1218 strbuf_release(&p->request_buffer);
1222 * CURLOPT_READFUNCTION callback function.
1223 * Attempts to copy over a single packet-line at a time into the
1224 * curl provided buffer.
1226 static size_t proxy_in(char *buffer, size_t eltsize,
1227 size_t nmemb, void *userdata)
1230 struct proxy_state *p = userdata;
1231 size_t avail = p->request_buffer.len - p->pos;
1235 BUG("curl read callback called with size = %"PRIuMAX" != 1",
1236 (uintmax_t)eltsize);
1240 if (p->seen_flush) {
1245 strbuf_reset(&p->request_buffer);
1246 switch (packet_reader_read(&p->reader)) {
1247 case PACKET_READ_EOF:
1248 die("unexpected EOF when reading from parent process");
1249 case PACKET_READ_NORMAL:
1250 packet_buf_write_len(&p->request_buffer, p->reader.line,
1253 case PACKET_READ_DELIM:
1254 packet_buf_delim(&p->request_buffer);
1256 case PACKET_READ_FLUSH:
1257 packet_buf_flush(&p->request_buffer);
1262 avail = p->request_buffer.len;
1267 memcpy(buffer, p->request_buffer.buf + p->pos, avail);
1272 static size_t proxy_out(char *buffer, size_t eltsize,
1273 size_t nmemb, void *userdata)
1276 struct proxy_state *p = userdata;
1279 BUG("curl read callback called with size = %"PRIuMAX" != 1",
1280 (uintmax_t)eltsize);
1283 write_or_die(p->out, buffer, size);
1287 /* Issues a request to the HTTP server configured in `p` */
1288 static int proxy_request(struct proxy_state *p)
1290 struct active_request_slot *slot;
1292 slot = get_active_slot();
1294 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
1295 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
1296 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
1297 curl_easy_setopt(slot->curl, CURLOPT_URL, p->service_url);
1298 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, p->headers);
1300 /* Setup function to read request from client */
1301 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, proxy_in);
1302 curl_easy_setopt(slot->curl, CURLOPT_READDATA, p);
1304 /* Setup function to write server response to client */
1305 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, proxy_out);
1306 curl_easy_setopt(slot->curl, CURLOPT_WRITEDATA, p);
1308 if (run_slot(slot, NULL) != HTTP_OK)
1314 static int stateless_connect(const char *service_name)
1316 struct discovery *discover;
1317 struct proxy_state p;
1320 * Run the info/refs request and see if the server supports protocol
1321 * v2. If and only if the server supports v2 can we successfully
1322 * establish a stateless connection, otherwise we need to tell the
1323 * client to fallback to using other transport helper functions to
1324 * complete their request.
1326 discover = discover_refs(service_name, 0);
1327 if (discover->version != protocol_v2) {
1328 printf("fallback\n");
1332 /* Stateless Connection established */
1337 proxy_state_init(&p, service_name, discover->version);
1340 * Dump the capability listing that we got from the server earlier
1341 * during the info/refs request.
1343 write_or_die(p.out, discover->buf, discover->len);
1345 /* Peek the next packet line. Until we see EOF keep sending POSTs */
1346 while (packet_reader_peek(&p.reader) != PACKET_READ_EOF) {
1347 if (proxy_request(&p)) {
1348 /* We would have an err here */
1353 proxy_state_clear(&p);
1357 int cmd_main(int argc, const char **argv)
1359 struct strbuf buf = STRBUF_INIT;
1362 setup_git_directory_gently(&nongit);
1364 error("remote-curl: usage: git remote-curl <remote> [<url>]");
1368 options.verbosity = 1;
1369 options.progress = !!isatty(2);
1371 string_list_init(&options.deepen_not, 1);
1372 string_list_init(&options.push_options, 1);
1374 remote = remote_get(argv[1]);
1377 end_url_with_slash(&url, argv[2]);
1379 end_url_with_slash(&url, remote->url[0]);
1382 http_init(remote, url.buf, 0);
1387 if (strbuf_getline_lf(&buf, stdin) == EOF) {
1389 error("remote-curl: error reading command stream from git");
1394 if (starts_with(buf.buf, "fetch ")) {
1396 die("remote-curl: fetch attempted without a local repo");
1399 } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
1400 int for_push = !!strstr(buf.buf + 4, "for-push");
1401 output_refs(get_refs(for_push));
1403 } else if (starts_with(buf.buf, "push ")) {
1406 } else if (skip_prefix(buf.buf, "option ", &arg)) {
1407 char *value = strchr(arg, ' ');
1415 result = set_option(arg, value);
1418 else if (result < 0)
1419 printf("error invalid value\n");
1421 printf("unsupported\n");
1424 } else if (!strcmp(buf.buf, "capabilities")) {
1425 printf("stateless-connect\n");
1429 printf("check-connectivity\n");
1432 } else if (skip_prefix(buf.buf, "stateless-connect ", &arg)) {
1433 if (!stateless_connect(arg))
1436 error("remote-curl: unknown command '%s' from git", buf.buf);