2 * Copyright (c) 2018, 2019 Ori Bernstein <ori@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <sys/types.h>
19 #include <sys/queue.h>
21 #include <sys/socket.h>
23 #include <sys/syslimits.h>
24 #include <sys/resource.h>
25 #include <sys/socket.h>
42 #include <netinet/in.h>
44 #include "got_error.h"
45 #include "got_reference.h"
46 #include "got_repository.h"
48 #include "got_cancel.h"
49 #include "got_worktree.h"
50 #include "got_object.h"
51 #include "got_opentemp.h"
52 #include "got_fetch.h"
54 #include "got_lib_delta.h"
55 #include "got_lib_inflate.h"
56 #include "got_lib_object.h"
57 #include "got_lib_object_parse.h"
58 #include "got_lib_object_create.h"
59 #include "got_lib_pack.h"
60 #include "got_lib_sha1.h"
61 #include "got_lib_privsep.h"
62 #include "got_lib_object_cache.h"
63 #include "got_lib_repository.h"
65 #define GOT_PROTOMAX 64
66 #define GOT_HOSTMAX 256
67 #define GOT_PATHMAX 512
68 #define GOT_REPOMAX 256
69 #define GOT_PORTMAX 16
70 #define GOT_URIMAX 1024
73 hassuffix(char *base, char *suf)
79 if (ns <= nb && strcmp(base + (nb - ns), suf) == 0)
84 static const struct got_error *
85 dial_ssh(int *fetchfd, const char *host, const char *port, const char *path,
86 const char *direction)
88 const struct got_error *error = NULL;
95 return got_error_from_errno("pipe");
99 error = got_error_from_errno("fork");
103 } else if (pid == 0) {
108 n = snprintf(cmd, sizeof(cmd), "git-%s-pack", direction);
109 if (n < 0 || n >= sizeof(cmd))
111 if (execl(GOT_FETCH_PATH_SSH, GOT_FETCH_PATH_SSH,
112 host, cmd, path, NULL) == -1)
114 abort(); /* not reached */
122 static const struct got_error *
123 dial_git(int *fetchfd, const char *host, const char *port, const char *path,
124 const char *direction)
126 const struct got_error *err = NULL;
127 struct addrinfo hints, *servinfo, *p;
128 char *cmd = NULL, *pkt = NULL;
129 int fd = -1, totlen, r, eaicode;
133 memset(&hints, 0, sizeof hints);
134 hints.ai_family = AF_UNSPEC;
135 hints.ai_socktype = SOCK_STREAM;
136 eaicode = getaddrinfo(host, port, &hints, &servinfo);
139 snprintf(msg, sizeof(msg), "%s: %s", host,
140 gai_strerror(eaicode));
141 return got_error_msg(GOT_ERR_ADDRINFO, msg);
144 for (p = servinfo; p != NULL; p = p->ai_next) {
145 if ((fd = socket(p->ai_family, p->ai_socktype,
146 p->ai_protocol)) == -1)
148 if (connect(fd, p->ai_addr, p->ai_addrlen) == 0)
150 err = got_error_from_errno("connect");
156 if (asprintf(&cmd, "git-%s-pack %s", direction, path) == -1) {
157 err = got_error_from_errno("asprintf");
160 totlen = 4 + strlen(cmd) + 1 + strlen("host=") + strlen(host) + 1;
161 if (asprintf(&pkt, "%04x%s", totlen, cmd) == -1) {
162 err = got_error_from_errno("asprintf");
165 r = write(fd, pkt, strlen(pkt) + 1);
167 err = got_error_from_errno("write");
170 if (asprintf(&pkt, "host=%s", host) == -1) {
171 err = got_error_from_errno("asprintf");
174 r = write(fd, pkt, strlen(pkt) + 1);
176 err = got_error_from_errno("write");
190 const struct got_error *
191 got_fetch_connect(int *fetchfd, const char *proto, const char *host,
192 const char *port, const char *server_path)
194 const struct got_error *err = NULL;
198 if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
199 err = dial_ssh(fetchfd, host, port, server_path, "upload");
200 else if (strcmp(proto, "git") == 0)
201 err = dial_git(fetchfd, host, port, server_path, "upload");
202 else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
203 err = got_error_path(proto, GOT_ERR_NOT_IMPL);
205 err = got_error_path(proto, GOT_ERR_BAD_PROTO);
209 const struct got_error *
210 got_fetch_parse_uri(char **proto, char **host, char **port,
211 char **server_path, char **repo_name, const char *uri)
213 const struct got_error *err = NULL;
217 *proto = *host = *port = *server_path = *repo_name = NULL;
219 p = strstr(uri, "://");
221 return got_error(GOT_ERR_PARSE_URI);
223 *proto = strndup(uri, p - uri);
225 err = got_error_from_errno("strndup");
229 hasport = (strcmp(*proto, "git") == 0 ||
230 strstr(*proto, "http") == *proto);
240 if (p == NULL || strlen(p) == 1) {
241 err = got_error(GOT_ERR_PARSE_URI);
245 q = memchr(s, ':', p - s);
247 *host = strndup(s, q - s);
249 err = got_error_from_errno("strndup");
252 *port = strndup(q + 1, p - (q + 1));
254 err = got_error_from_errno("strndup");
258 *host = strndup(s, p - s);
260 err = got_error_from_errno("strndup");
263 if (asprintf(port, "%u", GOT_DEFAULT_GIT_PORT) == -1) {
264 err = got_error_from_errno("asprintf");
269 *server_path = strdup(p);
270 if (*server_path == NULL) {
271 err = got_error_from_errno("strdup");
275 p = strrchr(p, '/') + 1;
276 if (!p || strlen(p) == 0) {
277 //werrstr("missing repository in uri");
278 err = got_error(GOT_ERR_PARSE_URI);
282 if (hassuffix(p, ".git"))
284 *repo_name = strndup(p, (p + n) - p);
285 if (*repo_name == NULL) {
286 err = got_error_from_errno("strndup");
305 static const struct got_error *
306 check_pack_hash(int fd, size_t sz, uint8_t *hcomp)
309 uint8_t hexpect[SHA1_DIGEST_LENGTH];
310 uint8_t buf[32 * 1024];
313 if (sz < sizeof(struct got_packfile_hdr) + SHA1_DIGEST_LENGTH)
314 return got_error_msg(GOT_ERR_BAD_PACKFILE, "short packfile");
318 while (n < sz - 20) {
320 if (sz - n - 20 < sizeof(buf))
322 r = read(fd, buf, nr);
324 return got_error_from_errno("read");
326 return got_error_msg(GOT_ERR_BAD_PACKFILE,
328 SHA1Update(&ctx, buf, nr);
331 SHA1Final(hcomp, &ctx);
333 r = read(fd, hexpect, sizeof(hexpect));
335 return got_error_from_errno("read");
336 if (r != sizeof(hexpect))
337 return got_error_msg(GOT_ERR_BAD_PACKFILE,
340 if (memcmp(hcomp, hexpect, SHA1_DIGEST_LENGTH) != 0)
341 return got_error_msg(GOT_ERR_BAD_PACKFILE,
342 "packfile checksum mismatch");
347 const struct got_error*
348 got_fetch_pack(struct got_object_id **pack_hash, struct got_pathlist_head *refs,
349 struct got_pathlist_head *symrefs, int fetchfd, struct got_repository *repo,
350 got_fetch_progress_cb progress_cb, void *progress_arg)
352 int imsg_fetchfds[2], imsg_idxfds[2];
353 int packfd = -1, npackfd = -1, idxfd = -1, nidxfd = -1, nfetchfd = -1;
355 int fetchstatus, idxstatus, done = 0;
356 const struct got_error *err;
357 struct imsgbuf fetchibuf, idxibuf;
358 pid_t fetchpid, idxpid;
359 char *tmppackpath = NULL, *tmpidxpath = NULL;
360 char *packpath = NULL, *idxpath = NULL, *id_str = NULL;
361 const char *repo_path = got_repo_get_path(repo);
362 struct got_pathlist_head have_refs;
363 struct got_pathlist_entry *pe;
364 off_t packfile_size = 0;
369 TAILQ_INIT(&have_refs);
371 if (asprintf(&path, "%s/%s/fetching.pack",
372 repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
373 err = got_error_from_errno("asprintf");
376 err = got_opentemp_named_fd(&tmppackpath, &packfd, path);
380 npackfd = dup(packfd);
382 err = got_error_from_errno("dup");
385 if (asprintf(&path, "%s/%s/fetching.idx",
386 repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
387 err = got_error_from_errno("asprintf");
390 err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path);
396 err = got_error_from_errno("dup");
400 tmpfd = got_opentempfd();
402 err = got_error_from_errno("got_opentempfd");
406 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fetchfds) == -1) {
407 err = got_error_from_errno("socketpair");
412 if (fetchpid == -1) {
413 err = got_error_from_errno("fork");
415 } else if (fetchpid == 0){
416 got_privsep_exec_child(imsg_fetchfds,
417 GOT_PATH_PROG_FETCH_PACK, tmppackpath);
420 if (close(imsg_fetchfds[1]) != 0) {
421 err = got_error_from_errno("close");
424 imsg_init(&fetchibuf, imsg_fetchfds[0]);
425 nfetchfd = dup(fetchfd);
426 if (nfetchfd == -1) {
427 err = got_error_from_errno("dup");
430 err = got_privsep_send_fetch_req(&fetchibuf, nfetchfd, &have_refs);
434 err = got_privsep_send_fetch_outfd(&fetchibuf, npackfd);
437 npackfd = dup(packfd);
439 err = got_error_from_errno("dup");
445 struct got_object_id *id = NULL;
446 char *refname = NULL;
447 char *server_progress = NULL;
448 off_t packfile_size_cur;
450 err = got_privsep_recv_fetch_progress(&done,
451 &id, &refname, symrefs, &server_progress,
452 &packfile_size_cur, &fetchibuf);
457 else if (refname && id) {
458 err = got_pathlist_append(refs, refname, id);
461 } else if (server_progress) {
462 char *s, *s0 = server_progress;
463 while ((s = strsep(&s0, "\r")) != NULL) {
466 err = progress_cb(progress_arg, s,
467 packfile_size_cur, 0, 0, 0, 0);
471 free(server_progress);
474 } else if (packfile_size_cur != packfile_size) {
475 err = progress_cb(progress_arg, NULL,
476 packfile_size_cur, 0, 0, 0, 0);
479 packfile_size = packfile_size_cur;
482 if (waitpid(fetchpid, &fetchstatus, 0) == -1) {
483 err = got_error_from_errno("waitpid");
487 if (lseek(packfd, 0, SEEK_SET) == -1) {
488 err = got_error_from_errno("lseek");
491 err = check_pack_hash(packfd, packfile_size, (*pack_hash)->sha1);
495 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_idxfds) == -1) {
496 err = got_error_from_errno("socketpair");
501 err= got_error_from_errno("fork");
503 } else if (idxpid == 0)
504 got_privsep_exec_child(imsg_idxfds,
505 GOT_PATH_PROG_INDEX_PACK, tmppackpath);
506 if (close(imsg_idxfds[1]) != 0) {
507 err = got_error_from_errno("close");
510 imsg_init(&idxibuf, imsg_idxfds[0]);
512 err = got_privsep_send_index_pack_req(&idxibuf, (*pack_hash)->sha1,
517 err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
521 err = got_privsep_send_tmpfd(&idxibuf, tmpfd);
527 int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
529 err = got_privsep_recv_index_progress(&done, &nobj_total,
530 &nobj_indexed, &nobj_loose, &nobj_resolved,
534 if (nobj_indexed != 0) {
535 err = progress_cb(progress_arg, NULL,
536 packfile_size, nobj_total,
537 nobj_indexed, nobj_loose, nobj_resolved);
541 imsg_clear(&idxibuf);
543 if (close(imsg_idxfds[0]) == -1) {
544 err = got_error_from_errno("close");
547 if (waitpid(idxpid, &idxstatus, 0) == -1) {
548 err = got_error_from_errno("waitpid");
552 err = got_object_id_str(&id_str, *pack_hash);
555 if (asprintf(&packpath, "%s/%s/pack-%s.pack",
556 repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
557 err = got_error_from_errno("asprintf");
561 if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
562 repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
563 err = got_error_from_errno("asprintf");
567 if (rename(tmppackpath, packpath) == -1) {
568 err = got_error_from_errno3("rename", tmppackpath, packpath);
571 if (rename(tmpidxpath, idxpath) == -1) {
572 err = got_error_from_errno3("rename", tmpidxpath, idxpath);
577 if (nfetchfd != -1 && close(nfetchfd) == -1 && err == NULL)
578 err = got_error_from_errno("close");
579 if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
580 err = got_error_from_errno("close");
581 if (packfd != -1 && close(packfd) == -1 && err == NULL)
582 err = got_error_from_errno("close");
583 if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
584 err = got_error_from_errno("close");
585 if (tmpfd != -1 && close(tmpfd) == -1 && err == NULL)
586 err = got_error_from_errno("close");
595 TAILQ_FOREACH(pe, refs, entry) {
596 free((void *)pe->path);
599 got_pathlist_free(refs);
600 TAILQ_FOREACH(pe, symrefs, entry) {
601 free((void *)pe->path);
604 got_pathlist_free(symrefs);