7 #include "run-command.h"
11 static struct remote
*remote
;
12 static const char *url
; /* always ends with a trailing slash */
17 unsigned progress
: 1,
22 static struct options options
;
24 static int set_option(const char *name
, const char *value
)
26 if (!strcmp(name
, "verbosity")) {
28 int v
= strtol(value
, &end
, 10);
29 if (value
== end
|| *end
)
31 options
.verbosity
= v
;
34 else if (!strcmp(name
, "progress")) {
35 if (!strcmp(value
, "true"))
37 else if (!strcmp(value
, "false"))
43 else if (!strcmp(name
, "depth")) {
45 unsigned long v
= strtoul(value
, &end
, 10);
46 if (value
== end
|| *end
)
51 else if (!strcmp(name
, "followtags")) {
52 if (!strcmp(value
, "true"))
53 options
.followtags
= 1;
54 else if (!strcmp(value
, "false"))
55 options
.followtags
= 0;
60 else if (!strcmp(name
, "dry-run")) {
61 if (!strcmp(value
, "true"))
63 else if (!strcmp(value
, "false"))
70 return 1 /* unsupported */;
80 unsigned proto_git
: 1;
82 static struct discovery
*last_discovery
;
84 static struct ref
*parse_git_refs(struct discovery
*heads
, int for_push
)
86 struct ref
*list
= NULL
;
87 get_remote_heads(-1, heads
->buf
, heads
->len
, &list
,
88 for_push
? REF_NORMAL
: 0, NULL
);
92 static struct ref
*parse_info_refs(struct discovery
*heads
)
94 char *data
, *start
, *mid
;
98 struct ref
*refs
= NULL
;
99 struct ref
*ref
= NULL
;
100 struct ref
*last_ref
= NULL
;
105 while (i
< heads
->len
) {
111 if (data
[i
] == '\n') {
112 if (mid
- start
!= 40)
113 die("%sinfo/refs not valid: is this a git repository?", url
);
116 ref
= xmalloc(sizeof(struct ref
) +
117 strlen(ref_name
) + 1);
118 memset(ref
, 0, sizeof(struct ref
));
119 strcpy(ref
->name
, ref_name
);
120 get_sha1_hex(start
, ref
->old_sha1
);
124 last_ref
->next
= ref
;
131 ref
= alloc_ref("HEAD");
132 if (!http_fetch_ref(url
, ref
) &&
133 !resolve_remote_symref(ref
, refs
)) {
143 static void free_discovery(struct discovery
*d
)
146 if (d
== last_discovery
)
147 last_discovery
= NULL
;
154 static struct discovery
* discover_refs(const char *service
, int for_push
)
156 struct strbuf exp
= STRBUF_INIT
;
157 struct strbuf type
= STRBUF_INIT
;
158 struct strbuf buffer
= STRBUF_INIT
;
159 struct discovery
*last
= last_discovery
;
161 int http_ret
, maybe_smart
= 0;
163 if (last
&& !strcmp(service
, last
->service
))
165 free_discovery(last
);
167 strbuf_addf(&buffer
, "%sinfo/refs", url
);
168 if ((!prefixcmp(url
, "http://") || !prefixcmp(url
, "https://")) &&
169 git_env_bool("GIT_SMART_HTTP", 1)) {
171 if (!strchr(url
, '?'))
172 strbuf_addch(&buffer
, '?');
174 strbuf_addch(&buffer
, '&');
175 strbuf_addf(&buffer
, "service=%s", service
);
177 refs_url
= strbuf_detach(&buffer
, NULL
);
179 http_ret
= http_get_strbuf(refs_url
, &type
, &buffer
, HTTP_NO_CACHE
);
183 case HTTP_MISSING_TARGET
:
184 die("%s not found: did you run git update-server-info on the"
185 " server?", refs_url
);
187 die("Authentication failed");
189 http_error(refs_url
, http_ret
);
190 die("HTTP request failed");
193 last
= xcalloc(1, sizeof(*last_discovery
));
194 last
->service
= service
;
195 last
->buf_alloc
= strbuf_detach(&buffer
, &last
->len
);
196 last
->buf
= last
->buf_alloc
;
198 strbuf_addf(&exp
, "application/x-%s-advertisement", service
);
200 (5 <= last
->len
&& last
->buf
[4] == '#') &&
201 !strbuf_cmp(&exp
, &type
)) {
205 * smart HTTP response; validate that the service
206 * pkt-line matches our request.
208 line
= packet_read_line_buf(&last
->buf
, &last
->len
, NULL
);
211 strbuf_addf(&exp
, "# service=%s", service
);
212 if (strcmp(line
, exp
.buf
))
213 die("invalid server response; got '%s'", line
);
214 strbuf_release(&exp
);
216 /* The header can include additional metadata lines, up
217 * until a packet flush marker. Ignore these now, but
218 * in the future we might start to scan them.
220 while (packet_read_line_buf(&last
->buf
, &last
->len
, NULL
))
227 last
->refs
= parse_git_refs(last
, for_push
);
229 last
->refs
= parse_info_refs(last
);
232 strbuf_release(&exp
);
233 strbuf_release(&type
);
234 strbuf_release(&buffer
);
235 last_discovery
= last
;
239 static struct ref
*get_refs(int for_push
)
241 struct discovery
*heads
;
244 heads
= discover_refs("git-receive-pack", for_push
);
246 heads
= discover_refs("git-upload-pack", for_push
);
251 static void output_refs(struct ref
*refs
)
254 for (posn
= refs
; posn
; posn
= posn
->next
) {
256 printf("@%s %s\n", posn
->symref
, posn
->name
);
258 printf("%s %s\n", sha1_to_hex(posn
->old_sha1
), posn
->name
);
265 const char *service_name
;
267 struct strbuf
*stdin_preamble
;
269 char *hdr_content_type
;
277 struct strbuf result
;
278 unsigned gzip_request
: 1;
279 unsigned initial_buffer
: 1;
282 static size_t rpc_out(void *ptr
, size_t eltsize
,
283 size_t nmemb
, void *buffer_
)
285 size_t max
= eltsize
* nmemb
;
286 struct rpc_state
*rpc
= buffer_
;
287 size_t avail
= rpc
->len
- rpc
->pos
;
290 rpc
->initial_buffer
= 0;
291 avail
= packet_read(rpc
->out
, NULL
, NULL
, rpc
->buf
, rpc
->alloc
, 0);
300 memcpy(ptr
, rpc
->buf
+ rpc
->pos
, avail
);
305 #ifndef NO_CURL_IOCTL
306 static curlioerr
rpc_ioctl(CURL
*handle
, int cmd
, void *clientp
)
308 struct rpc_state
*rpc
= clientp
;
314 case CURLIOCMD_RESTARTREAD
:
315 if (rpc
->initial_buffer
) {
319 fprintf(stderr
, "Unable to rewind rpc post data - try increasing http.postBuffer\n");
320 return CURLIOE_FAILRESTART
;
323 return CURLIOE_UNKNOWNCMD
;
328 static size_t rpc_in(char *ptr
, size_t eltsize
,
329 size_t nmemb
, void *buffer_
)
331 size_t size
= eltsize
* nmemb
;
332 struct rpc_state
*rpc
= buffer_
;
333 write_or_die(rpc
->in
, ptr
, size
);
337 static int run_slot(struct active_request_slot
*slot
)
340 struct slot_results results
;
342 slot
->results
= &results
;
343 slot
->curl_result
= curl_easy_perform(slot
->curl
);
344 finish_active_slot(slot
);
346 err
= handle_curl_result(&results
);
347 if (err
!= HTTP_OK
&& err
!= HTTP_REAUTH
) {
348 error("RPC failed; result=%d, HTTP code = %ld",
349 results
.curl_result
, results
.http_code
);
355 static int probe_rpc(struct rpc_state
*rpc
)
357 struct active_request_slot
*slot
;
358 struct curl_slist
*headers
= NULL
;
359 struct strbuf buf
= STRBUF_INIT
;
362 slot
= get_active_slot();
364 headers
= curl_slist_append(headers
, rpc
->hdr_content_type
);
365 headers
= curl_slist_append(headers
, rpc
->hdr_accept
);
367 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
368 curl_easy_setopt(slot
->curl
, CURLOPT_POST
, 1);
369 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, rpc
->service_url
);
370 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, NULL
);
371 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, "0000");
372 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDSIZE
, 4);
373 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
374 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, fwrite_buffer
);
375 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, &buf
);
377 err
= run_slot(slot
);
379 curl_slist_free_all(headers
);
380 strbuf_release(&buf
);
384 static int post_rpc(struct rpc_state
*rpc
)
386 struct active_request_slot
*slot
;
387 struct curl_slist
*headers
= NULL
;
388 int use_gzip
= rpc
->gzip_request
;
389 char *gzip_body
= NULL
;
390 size_t gzip_size
= 0;
391 int err
, large_request
= 0;
393 /* Try to load the entire request, if we can fit it into the
394 * allocated buffer space we can use HTTP/1.0 and avoid the
395 * chunked encoding mess.
398 size_t left
= rpc
->alloc
- rpc
->len
;
399 char *buf
= rpc
->buf
+ rpc
->len
;
402 if (left
< LARGE_PACKET_MAX
) {
408 n
= packet_read(rpc
->out
, NULL
, NULL
, buf
, left
, 0);
416 err
= probe_rpc(rpc
);
417 } while (err
== HTTP_REAUTH
);
422 headers
= curl_slist_append(headers
, rpc
->hdr_content_type
);
423 headers
= curl_slist_append(headers
, rpc
->hdr_accept
);
424 headers
= curl_slist_append(headers
, "Expect:");
427 slot
= get_active_slot();
429 curl_easy_setopt(slot
->curl
, CURLOPT_NOBODY
, 0);
430 curl_easy_setopt(slot
->curl
, CURLOPT_POST
, 1);
431 curl_easy_setopt(slot
->curl
, CURLOPT_URL
, rpc
->service_url
);
432 curl_easy_setopt(slot
->curl
, CURLOPT_ENCODING
, "gzip");
435 /* The request body is large and the size cannot be predicted.
436 * We must use chunked encoding to send it.
438 headers
= curl_slist_append(headers
, "Transfer-Encoding: chunked");
439 rpc
->initial_buffer
= 1;
440 curl_easy_setopt(slot
->curl
, CURLOPT_READFUNCTION
, rpc_out
);
441 curl_easy_setopt(slot
->curl
, CURLOPT_INFILE
, rpc
);
442 #ifndef NO_CURL_IOCTL
443 curl_easy_setopt(slot
->curl
, CURLOPT_IOCTLFUNCTION
, rpc_ioctl
);
444 curl_easy_setopt(slot
->curl
, CURLOPT_IOCTLDATA
, rpc
);
446 if (options
.verbosity
> 1) {
447 fprintf(stderr
, "POST %s (chunked)\n", rpc
->service_name
);
451 } else if (gzip_body
) {
453 * If we are looping to retry authentication, then the previous
454 * run will have set up the headers and gzip buffer already,
455 * and we just need to send it.
457 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, gzip_body
);
458 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDSIZE
, gzip_size
);
460 } else if (use_gzip
&& 1024 < rpc
->len
) {
461 /* The client backend isn't giving us compressed data so
462 * we can try to deflate it ourselves, this may save on.
468 memset(&stream
, 0, sizeof(stream
));
469 git_deflate_init_gzip(&stream
, Z_BEST_COMPRESSION
);
470 gzip_size
= git_deflate_bound(&stream
, rpc
->len
);
471 gzip_body
= xmalloc(gzip_size
);
473 stream
.next_in
= (unsigned char *)rpc
->buf
;
474 stream
.avail_in
= rpc
->len
;
475 stream
.next_out
= (unsigned char *)gzip_body
;
476 stream
.avail_out
= gzip_size
;
478 ret
= git_deflate(&stream
, Z_FINISH
);
479 if (ret
!= Z_STREAM_END
)
480 die("cannot deflate request; zlib deflate error %d", ret
);
482 ret
= git_deflate_end_gently(&stream
);
484 die("cannot deflate request; zlib end error %d", ret
);
486 gzip_size
= stream
.total_out
;
488 headers
= curl_slist_append(headers
, "Content-Encoding: gzip");
489 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, gzip_body
);
490 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDSIZE
, gzip_size
);
492 if (options
.verbosity
> 1) {
493 fprintf(stderr
, "POST %s (gzip %lu to %lu bytes)\n",
495 (unsigned long)rpc
->len
, (unsigned long)gzip_size
);
499 /* We know the complete request size in advance, use the
500 * more normal Content-Length approach.
502 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDS
, rpc
->buf
);
503 curl_easy_setopt(slot
->curl
, CURLOPT_POSTFIELDSIZE
, rpc
->len
);
504 if (options
.verbosity
> 1) {
505 fprintf(stderr
, "POST %s (%lu bytes)\n",
506 rpc
->service_name
, (unsigned long)rpc
->len
);
511 curl_easy_setopt(slot
->curl
, CURLOPT_HTTPHEADER
, headers
);
512 curl_easy_setopt(slot
->curl
, CURLOPT_WRITEFUNCTION
, rpc_in
);
513 curl_easy_setopt(slot
->curl
, CURLOPT_FILE
, rpc
);
515 err
= run_slot(slot
);
516 if (err
== HTTP_REAUTH
&& !large_request
)
521 curl_slist_free_all(headers
);
526 static int rpc_service(struct rpc_state
*rpc
, struct discovery
*heads
)
528 const char *svc
= rpc
->service_name
;
529 struct strbuf buf
= STRBUF_INIT
;
530 struct strbuf
*preamble
= rpc
->stdin_preamble
;
531 struct child_process client
;
534 memset(&client
, 0, sizeof(client
));
538 client
.argv
= rpc
->argv
;
539 if (start_command(&client
))
542 write_or_die(client
.in
, preamble
->buf
, preamble
->len
);
544 write_or_die(client
.in
, heads
->buf
, heads
->len
);
546 rpc
->alloc
= http_post_buffer
;
547 rpc
->buf
= xmalloc(rpc
->alloc
);
549 rpc
->out
= client
.out
;
550 strbuf_init(&rpc
->result
, 0);
552 strbuf_addf(&buf
, "%s%s", url
, svc
);
553 rpc
->service_url
= strbuf_detach(&buf
, NULL
);
555 strbuf_addf(&buf
, "Content-Type: application/x-%s-request", svc
);
556 rpc
->hdr_content_type
= strbuf_detach(&buf
, NULL
);
558 strbuf_addf(&buf
, "Accept: application/x-%s-result", svc
);
559 rpc
->hdr_accept
= strbuf_detach(&buf
, NULL
);
562 int n
= packet_read(rpc
->out
, NULL
, NULL
, rpc
->buf
, rpc
->alloc
, 0);
567 err
|= post_rpc(rpc
);
573 strbuf_read(&rpc
->result
, client
.out
, 0);
577 if (xread(client
.out
, buf
, sizeof(buf
)) <= 0)
584 err
|= finish_command(&client
);
585 free(rpc
->service_url
);
586 free(rpc
->hdr_content_type
);
587 free(rpc
->hdr_accept
);
589 strbuf_release(&buf
);
593 static int fetch_dumb(int nr_heads
, struct ref
**to_fetch
)
595 struct walker
*walker
;
596 char **targets
= xmalloc(nr_heads
* sizeof(char*));
600 die("dumb http transport does not support --depth");
601 for (i
= 0; i
< nr_heads
; i
++)
602 targets
[i
] = xstrdup(sha1_to_hex(to_fetch
[i
]->old_sha1
));
604 walker
= get_http_walker(url
);
606 walker
->get_tree
= 1;
607 walker
->get_history
= 1;
608 walker
->get_verbosely
= options
.verbosity
>= 3;
609 walker
->get_recover
= 0;
610 ret
= walker_fetch(walker
, nr_heads
, targets
, NULL
, NULL
);
613 for (i
= 0; i
< nr_heads
; i
++)
617 return ret
? error("Fetch failed.") : 0;
620 static int fetch_git(struct discovery
*heads
,
621 int nr_heads
, struct ref
**to_fetch
)
623 struct rpc_state rpc
;
624 struct strbuf preamble
= STRBUF_INIT
;
625 char *depth_arg
= NULL
;
626 int argc
= 0, i
, err
;
627 const char *argv
[15];
629 argv
[argc
++] = "fetch-pack";
630 argv
[argc
++] = "--stateless-rpc";
631 argv
[argc
++] = "--stdin";
632 argv
[argc
++] = "--lock-pack";
633 if (options
.followtags
)
634 argv
[argc
++] = "--include-tag";
636 argv
[argc
++] = "--thin";
637 if (options
.verbosity
>= 3) {
641 if (!options
.progress
)
642 argv
[argc
++] = "--no-progress";
644 struct strbuf buf
= STRBUF_INIT
;
645 strbuf_addf(&buf
, "--depth=%lu", options
.depth
);
646 depth_arg
= strbuf_detach(&buf
, NULL
);
647 argv
[argc
++] = depth_arg
;
652 for (i
= 0; i
< nr_heads
; i
++) {
653 struct ref
*ref
= to_fetch
[i
];
654 if (!ref
->name
|| !*ref
->name
)
655 die("cannot fetch by sha1 over smart http");
656 packet_buf_write(&preamble
, "%s\n", ref
->name
);
658 packet_buf_flush(&preamble
);
660 memset(&rpc
, 0, sizeof(rpc
));
661 rpc
.service_name
= "git-upload-pack",
663 rpc
.stdin_preamble
= &preamble
;
664 rpc
.gzip_request
= 1;
666 err
= rpc_service(&rpc
, heads
);
668 write_or_die(1, rpc
.result
.buf
, rpc
.result
.len
);
669 strbuf_release(&rpc
.result
);
670 strbuf_release(&preamble
);
675 static int fetch(int nr_heads
, struct ref
**to_fetch
)
677 struct discovery
*d
= discover_refs("git-upload-pack", 0);
679 return fetch_git(d
, nr_heads
, to_fetch
);
681 return fetch_dumb(nr_heads
, to_fetch
);
684 static void parse_fetch(struct strbuf
*buf
)
686 struct ref
**to_fetch
= NULL
;
687 struct ref
*list_head
= NULL
;
688 struct ref
**list
= &list_head
;
689 int alloc_heads
= 0, nr_heads
= 0;
692 if (!prefixcmp(buf
->buf
, "fetch ")) {
693 char *p
= buf
->buf
+ strlen("fetch ");
696 unsigned char old_sha1
[20];
698 if (strlen(p
) < 40 || get_sha1_hex(p
, old_sha1
))
699 die("protocol error: expected sha/ref, got %s'", p
);
705 die("protocol error: expected sha/ref, got %s'", p
);
707 ref
= alloc_ref(name
);
708 hashcpy(ref
->old_sha1
, old_sha1
);
713 ALLOC_GROW(to_fetch
, nr_heads
+ 1, alloc_heads
);
714 to_fetch
[nr_heads
++] = ref
;
717 die("http transport does not support %s", buf
->buf
);
720 if (strbuf_getline(buf
, stdin
, '\n') == EOF
)
726 if (fetch(nr_heads
, to_fetch
))
727 exit(128); /* error already reported */
728 free_refs(list_head
);
736 static int push_dav(int nr_spec
, char **specs
)
738 const char **argv
= xmalloc((10 + nr_spec
) * sizeof(char*));
741 argv
[argc
++] = "http-push";
742 argv
[argc
++] = "--helper-status";
744 argv
[argc
++] = "--dry-run";
745 if (options
.verbosity
> 1)
746 argv
[argc
++] = "--verbose";
748 for (i
= 0; i
< nr_spec
; i
++)
749 argv
[argc
++] = specs
[i
];
752 if (run_command_v_opt(argv
, RUN_GIT_CMD
))
753 die("git-%s failed", argv
[0]);
758 static int push_git(struct discovery
*heads
, int nr_spec
, char **specs
)
760 struct rpc_state rpc
;
762 int argc
= 0, i
, err
;
764 argv
= xmalloc((10 + nr_spec
) * sizeof(char*));
765 argv
[argc
++] = "send-pack";
766 argv
[argc
++] = "--stateless-rpc";
767 argv
[argc
++] = "--helper-status";
769 argv
[argc
++] = "--thin";
771 argv
[argc
++] = "--dry-run";
772 if (options
.verbosity
== 0)
773 argv
[argc
++] = "--quiet";
774 else if (options
.verbosity
> 1)
775 argv
[argc
++] = "--verbose";
776 argv
[argc
++] = options
.progress
? "--progress" : "--no-progress";
778 for (i
= 0; i
< nr_spec
; i
++)
779 argv
[argc
++] = specs
[i
];
782 memset(&rpc
, 0, sizeof(rpc
));
783 rpc
.service_name
= "git-receive-pack",
786 err
= rpc_service(&rpc
, heads
);
788 write_or_die(1, rpc
.result
.buf
, rpc
.result
.len
);
789 strbuf_release(&rpc
.result
);
794 static int push(int nr_spec
, char **specs
)
796 struct discovery
*heads
= discover_refs("git-receive-pack", 1);
799 if (heads
->proto_git
)
800 ret
= push_git(heads
, nr_spec
, specs
);
802 ret
= push_dav(nr_spec
, specs
);
803 free_discovery(heads
);
807 static void parse_push(struct strbuf
*buf
)
810 int alloc_spec
= 0, nr_spec
= 0, i
, ret
;
813 if (!prefixcmp(buf
->buf
, "push ")) {
814 ALLOC_GROW(specs
, nr_spec
+ 1, alloc_spec
);
815 specs
[nr_spec
++] = xstrdup(buf
->buf
+ 5);
818 die("http transport does not support %s", buf
->buf
);
821 if (strbuf_getline(buf
, stdin
, '\n') == EOF
)
827 ret
= push(nr_spec
, specs
);
832 exit(128); /* error already reported */
835 for (i
= 0; i
< nr_spec
; i
++)
840 int main(int argc
, const char **argv
)
842 struct strbuf buf
= STRBUF_INIT
;
845 git_extract_argv0_path(argv
[0]);
846 setup_git_directory_gently(&nongit
);
848 fprintf(stderr
, "Remote needed\n");
852 options
.verbosity
= 1;
853 options
.progress
= !!isatty(2);
856 remote
= remote_get(argv
[1]);
859 end_url_with_slash(&buf
, argv
[2]);
861 end_url_with_slash(&buf
, remote
->url
[0]);
864 url
= strbuf_detach(&buf
, NULL
);
866 http_init(remote
, url
, 0);
869 if (strbuf_getline(&buf
, stdin
, '\n') == EOF
) {
871 fprintf(stderr
, "Error reading command stream\n");
873 fprintf(stderr
, "Unexpected end of command stream\n");
878 if (!prefixcmp(buf
.buf
, "fetch ")) {
880 die("Fetch attempted without a local repo");
883 } else if (!strcmp(buf
.buf
, "list") || !prefixcmp(buf
.buf
, "list ")) {
884 int for_push
= !!strstr(buf
.buf
+ 4, "for-push");
885 output_refs(get_refs(for_push
));
887 } else if (!prefixcmp(buf
.buf
, "push ")) {
890 } else if (!prefixcmp(buf
.buf
, "option ")) {
891 char *name
= buf
.buf
+ strlen("option ");
892 char *value
= strchr(name
, ' ');
900 result
= set_option(name
, value
);
904 printf("error invalid value\n");
906 printf("unsupported\n");
909 } else if (!strcmp(buf
.buf
, "capabilities")) {
916 fprintf(stderr
, "Unknown command '%s'\n", buf
.buf
);