1 /*
2  * Copyright (c) 2018, 2019 Ori Bernstein <ori@openbsd.org>
3  *
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.
7  *
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.
15  */
16 
17 #include <sys/types.h>
18 #include <sys/stat.h>
19 #include <sys/queue.h>
20 #include <sys/uio.h>
21 #include <sys/socket.h>
22 #include <sys/wait.h>
23 #include <sys/syslimits.h>
24 #include <sys/resource.h>
25 #include <sys/socket.h>
26 
27 #include <errno.h>
28 #include <err.h>
29 #include <fcntl.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <stdint.h>
34 #include <sha1.h>
35 #include <zlib.h>
36 #include <ctype.h>
37 #include <limits.h>
38 #include <imsg.h>
39 #include <time.h>
40 #include <uuid.h>
41 #include <netdb.h>
42 #include <netinet/in.h>
43 
44 #include "got_error.h"
45 #include "got_reference.h"
46 #include "got_repository.h"
47 #include "got_path.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"
53 
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"
64 
65 #ifndef nitems
66 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
67 #endif
68 
69 #ifndef MIN
70 #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
71 #endif
72 
73 static int
74 hassuffix(char *base, char *suf)
75 {
76 	int nb, ns;
77 
78 	nb = strlen(base);
79 	ns = strlen(suf);
80 	if (ns <= nb && strcmp(base + (nb - ns), suf) == 0)
81 		return 1;
82 	return 0;
83 }
84 
85 static const struct got_error *
86 dial_ssh(int *fetchfd, const char *host, const char *port, const char *path,
87     const char *direction, int verbosity)
88 {
89 	const struct got_error *error = NULL;
90 	int pid, pfd[2];
91 	char cmd[64];
92 	char *argv[9];
93 	int i = 0;
94 
95 	*fetchfd = -1;
96 
97 	argv[0] = GOT_FETCH_PATH_SSH;
98 	if (verbosity == -1) {
99 		argv[1 + i++] = "-q";
100 	} else {
101 		/* ssh(1) allows up to 3 "-v" options. */
102 		for (i = 0; i < MIN(3, verbosity); i++)
103 			argv[1 + i] = "-v";
104 	}
105 	argv[1 + i] = "--";
106 	argv[2 + i] = (char *)host;
107 	argv[3 + i] = (char *)cmd;
108 	argv[4 + i] = (char *)path;
109 	argv[5 + i] = NULL;
110 
111 	if (pipe(pfd) == -1)
112 		return got_error_from_errno("pipe");
113 
114 	pid = fork();
115 	if (pid == -1) {
116 		error = got_error_from_errno("fork");
117 		close(pfd[0]);
118 		close(pfd[1]);
119 		return error;
120 	} else if (pid == 0) {
121 		int n;
122 		close(pfd[1]);
123 		dup2(pfd[0], 0);
124 		dup2(pfd[0], 1);
125 		n = snprintf(cmd, sizeof(cmd), "git-%s-pack", direction);
126 		if (n < 0 || n >= sizeof(cmd))
127 			err(1, "snprintf");
128 		if (execv(GOT_FETCH_PATH_SSH, argv) == -1)
129 			err(1, "execl");
130 		abort(); /* not reached */
131 	} else {
132 		close(pfd[0]);
133 		*fetchfd = pfd[1];
134 		return NULL;
135 	}
136 }
137 
138 static const struct got_error *
139 dial_git(int *fetchfd, const char *host, const char *port, const char *path,
140     const char *direction)
141 {
142 	const struct got_error *err = NULL;
143 	struct addrinfo hints, *servinfo, *p;
144 	char *cmd = NULL, *pkt = NULL;
145 	int fd = -1, totlen, r, eaicode;
146 
147 	*fetchfd = -1;
148 
149 	memset(&hints, 0, sizeof hints);
150 	hints.ai_family = AF_UNSPEC;
151 	hints.ai_socktype = SOCK_STREAM;
152 	eaicode = getaddrinfo(host, port, &hints, &servinfo);
153 	if (eaicode) {
154 		char msg[512];
155 		snprintf(msg, sizeof(msg), "%s: %s", host,
156 		    gai_strerror(eaicode));
157 		return got_error_msg(GOT_ERR_ADDRINFO, msg);
158 	}
159 
160 	for (p = servinfo; p != NULL; p = p->ai_next) {
161 		if ((fd = socket(p->ai_family, p->ai_socktype,
162 		    p->ai_protocol)) == -1)
163 			continue;
164 		if (connect(fd, p->ai_addr, p->ai_addrlen) == 0)
165 			break;
166 		err = got_error_from_errno("connect");
167 		close(fd);
168 	}
169 	if (p == NULL)
170 		goto done;
171 
172 	if (asprintf(&cmd, "git-%s-pack %s", direction, path) == -1) {
173 		err = got_error_from_errno("asprintf");
174 		goto done;
175 	}
176 	totlen = 4 + strlen(cmd) + 1 + strlen("host=") + strlen(host) + 1;
177 	if (asprintf(&pkt, "%04x%s", totlen, cmd) == -1) {
178 		err = got_error_from_errno("asprintf");
179 		goto done;
180 	}
181 	r = write(fd, pkt, strlen(pkt) + 1);
182 	if (r == -1) {
183 		err = got_error_from_errno("write");
184 		goto done;
185 	}
186 	if (asprintf(&pkt, "host=%s", host) == -1) {
187 		err = got_error_from_errno("asprintf");
188 		goto done;
189 	}
190 	r = write(fd, pkt, strlen(pkt) + 1);
191 	if (r == -1) {
192 		err = got_error_from_errno("write");
193 		goto done;
194 	}
195 done:
196 	free(cmd);
197 	free(pkt);
198 	if (err) {
199 		if (fd != -1)
200 			close(fd);
201 	} else
202 		*fetchfd = fd;
203 	return err;
204 }
205 
206 const struct got_error *
207 got_fetch_connect(int *fetchfd, const char *proto, const char *host,
208     const char *port, const char *server_path, int verbosity)
209 {
210 	const struct got_error *err = NULL;
211 
212 	*fetchfd = -1;
213 
214 	if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
215 		err = dial_ssh(fetchfd, host, port, server_path, "upload",
216 		    verbosity);
217 	else if (strcmp(proto, "git") == 0)
218 		err = dial_git(fetchfd, host, port, server_path, "upload");
219 	else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
220 		err = got_error_path(proto, GOT_ERR_NOT_IMPL);
221 	else
222 		err = got_error_path(proto, GOT_ERR_BAD_PROTO);
223 	return err;
224 }
225 
226 const struct got_error *
227 got_fetch_parse_uri(char **proto, char **host, char **port,
228     char **server_path, char **repo_name, const char *uri)
229 {
230 	const struct got_error *err = NULL;
231 	char *s, *p, *q;
232 	int n;
233 
234 	*proto = *host = *port = *server_path = *repo_name = NULL;
235 
236 	p = strstr(uri, "://");
237 	if (!p) {
238 		/* Try parsing Git's "scp" style URL syntax. */
239 		*proto = strdup("ssh");
240 		if (proto == NULL) {
241 			err = got_error_from_errno("strdup");
242 			goto done;
243 		}
244 		*port = strdup("22");
245 		if (*port == NULL) {
246 			err = got_error_from_errno("strdup");
247 			goto done;
248 		}
249 		s = (char *)uri;
250 		q = strchr(s, ':');
251 		if (q == NULL) {
252 			err = got_error(GOT_ERR_PARSE_URI);
253 			goto done;
254 		}
255 		/* No slashes allowed before first colon. */
256 		p = strchr(s, '/');
257 		if (p && q > p) {
258 			err = got_error(GOT_ERR_PARSE_URI);
259 			goto done;
260 		}
261 		*host = strndup(s, q - s);
262 		if (*host == NULL) {
263 			err = got_error_from_errno("strndup");
264 			goto done;
265 		}
266 		p = q + 1;
267 	} else {
268 		*proto = strndup(uri, p - uri);
269 		if (proto == NULL) {
270 			err = got_error_from_errno("strndup");
271 			goto done;
272 		}
273 		s = p + 3;
274 
275 		p = strstr(s, "/");
276 		if (p == NULL || strlen(p) == 1) {
277 			err = got_error(GOT_ERR_PARSE_URI);
278 			goto done;
279 		}
280 
281 		q = memchr(s, ':', p - s);
282 		if (q) {
283 			*host = strndup(s, q - s);
284 			if (*host == NULL) {
285 				err = got_error_from_errno("strndup");
286 				goto done;
287 			}
288 			*port = strndup(q + 1, p - (q + 1));
289 			if (*port == NULL) {
290 				err = got_error_from_errno("strndup");
291 				goto done;
292 			}
293 		} else {
294 			*host = strndup(s, p - s);
295 			if (*host == NULL) {
296 				err = got_error_from_errno("strndup");
297 				goto done;
298 			}
299 			if (asprintf(port, "%u", GOT_DEFAULT_GIT_PORT) == -1) {
300 				err = got_error_from_errno("asprintf");
301 				goto done;
302 			}
303 		}
304 	}
305 
306 	*server_path = strdup(p);
307 	if (*server_path == NULL) {
308 		err = got_error_from_errno("strdup");
309 		goto done;
310 	}
311 
312 	p = strrchr(p, '/');
313 	if (!p || strlen(p) <= 1) {
314 		err = got_error(GOT_ERR_PARSE_URI);
315 		goto done;
316 	}
317 	p++;
318 	n = strlen(p);
319 	if (n == 0) {
320 		err = got_error(GOT_ERR_PARSE_URI);
321 		goto done;
322 	}
323 	if (hassuffix(p, ".git"))
324 		n -= 4;
325 	*repo_name = strndup(p, (p + n) - p);
326 	if (*repo_name == NULL) {
327 		err = got_error_from_errno("strndup");
328 		goto done;
329 	}
330 done:
331 	if (err) {
332 		free(*proto);
333 		*proto = NULL;
334 		free(*host);
335 		*host = NULL;
336 		free(*port);
337 		*port = NULL;
338 		free(*server_path);
339 		*server_path = NULL;
340 		free(*repo_name);
341 		*repo_name = NULL;
342 	}
343 	return err;
344 }
345 
346 static const struct got_error *
347 check_pack_hash(int fd, size_t sz, uint8_t *hcomp)
348 {
349 	SHA1_CTX ctx;
350 	uint8_t hexpect[SHA1_DIGEST_LENGTH];
351 	uint8_t buf[32 * 1024];
352 	ssize_t n, r, nr;
353 
354 	if (sz < sizeof(struct got_packfile_hdr) + SHA1_DIGEST_LENGTH)
355 		return got_error_msg(GOT_ERR_BAD_PACKFILE, "short packfile");
356 
357 	n = 0;
358 	SHA1Init(&ctx);
359 	while (n < sz - 20) {
360 		nr = sizeof(buf);
361 		if (sz - n - 20 < sizeof(buf))
362 			nr = sz - n - 20;
363 		r = read(fd, buf, nr);
364 		if (r == -1)
365 			return got_error_from_errno("read");
366 		if (r != nr)
367 			return got_error_msg(GOT_ERR_BAD_PACKFILE,
368 			    "short pack file");
369 		SHA1Update(&ctx, buf, nr);
370 		n += r;
371 	}
372 	SHA1Final(hcomp, &ctx);
373 
374 	r = read(fd, hexpect, sizeof(hexpect));
375 	if (r == -1)
376 		return got_error_from_errno("read");
377 	if (r != sizeof(hexpect))
378 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
379 		    "short pack file");
380 
381 	if (memcmp(hcomp, hexpect, SHA1_DIGEST_LENGTH) != 0)
382 		return got_error_msg(GOT_ERR_BAD_PACKFILE,
383 		    "packfile checksum mismatch");
384 
385 	return NULL;
386 }
387 
388 const struct got_error*
389 got_fetch_pack(struct got_object_id **pack_hash, struct got_pathlist_head *refs,
390     struct got_pathlist_head *symrefs, const char *remote_name,
391     int mirror_references, int fetchfd, struct got_repository *repo,
392     got_fetch_progress_cb progress_cb, void *progress_arg)
393 {
394 	int imsg_fetchfds[2], imsg_idxfds[2];
395 	int packfd = -1, npackfd = -1, idxfd = -1, nidxfd = -1, nfetchfd = -1;
396 	int tmpfds[3], i;
397 	int fetchstatus, idxstatus, done = 0;
398 	const struct got_error *err;
399 	struct imsgbuf fetchibuf, idxibuf;
400 	pid_t fetchpid, idxpid;
401 	char *tmppackpath = NULL, *tmpidxpath = NULL;
402 	char *packpath = NULL, *idxpath = NULL, *id_str = NULL;
403 	const char *repo_path = got_repo_get_path_git_dir(repo);
404 	struct got_pathlist_head have_refs;
405 	struct got_pathlist_entry *pe;
406 	struct got_reflist_head my_refs;
407 	struct got_reflist_entry *re;
408 	off_t packfile_size = 0;
409 	char *ref_prefix = NULL;
410 	size_t ref_prefixlen = 0;
411 	char *path;
412 	char *progress = NULL;
413 
414 	*pack_hash = NULL;
415 	for (i = 0; i < nitems(tmpfds); i++)
416 		tmpfds[i] = -1;
417 
418 	TAILQ_INIT(&have_refs);
419 	SIMPLEQ_INIT(&my_refs);
420 
421 	if (!mirror_references) {
422 		if (asprintf(&ref_prefix, "refs/remotes/%s/",
423 		    remote_name) == -1)
424 			return got_error_from_errno("asprintf");
425 		ref_prefixlen = strlen(ref_prefix);
426 	}
427 
428 	err = got_ref_list(&my_refs, repo, NULL, got_ref_cmp_by_name, NULL);
429 	if (err)
430 		goto done;
431 
432 	SIMPLEQ_FOREACH(re, &my_refs, entry) {
433 		struct got_object_id *id;
434 		const char *refname;
435 
436 		if (got_ref_is_symbolic(re->ref))
437 			continue;
438 
439 		refname = got_ref_get_name(re->ref);
440 
441 		if (mirror_references) {
442 			char *name;
443 			err = got_ref_resolve(&id, repo, re->ref);
444 			if (err)
445 				goto done;
446 			name = strdup(refname);
447 			if (name == NULL) {
448 				err = got_error_from_errno("strdup");
449 				goto done;
450 			}
451 			err = got_pathlist_append(&have_refs, name, id);
452 			if (err)
453 				goto done;
454 			continue;
455 		}
456 
457 		if (strncmp("refs/tags/", refname, 10) == 0) {
458 			char *tagname;
459 
460 			err = got_ref_resolve(&id, repo, re->ref);
461 			if (err)
462 				goto done;
463 			tagname = strdup(refname);
464 			if (tagname == NULL) {
465 				err = got_error_from_errno("strdup");
466 				goto done;
467 			}
468 			err = got_pathlist_append(&have_refs, tagname, id);
469 			if (err) {
470 				free(tagname);
471 				goto done;
472 			}
473 		}
474 
475 		if (strncmp(ref_prefix, refname, ref_prefixlen) == 0) {
476 			char *branchname;
477 
478 			err = got_ref_resolve(&id, repo, re->ref);
479 			if (err)
480 				goto done;
481 
482 			if (asprintf(&branchname, "refs/heads/%s",
483 			    refname + ref_prefixlen) == -1) {
484 				err = got_error_from_errno("asprintf");
485 				goto done;
486 			}
487 			err = got_pathlist_append(&have_refs, branchname, id);
488 			if (err) {
489 				free(branchname);
490 				goto done;
491 			}
492 		}
493 	}
494 
495 	if (asprintf(&path, "%s/%s/fetching.pack",
496 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
497 		err = got_error_from_errno("asprintf");
498 		goto done;
499 	}
500 	err = got_opentemp_named_fd(&tmppackpath, &packfd, path);
501 	free(path);
502 	if (err)
503 		goto done;
504 	npackfd = dup(packfd);
505 	if (npackfd == -1) {
506 		err = got_error_from_errno("dup");
507 		goto done;
508 	}
509 	if (asprintf(&path, "%s/%s/fetching.idx",
510 	    repo_path, GOT_OBJECTS_PACK_DIR) == -1) {
511 		err = got_error_from_errno("asprintf");
512 		goto done;
513 	}
514 	err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path);
515 	free(path);
516 	if (err)
517 		goto done;
518 	nidxfd = dup(idxfd);
519 	if (nidxfd == -1) {
520 		err = got_error_from_errno("dup");
521 		goto done;
522 	}
523 
524 	for (i = 0; i < nitems(tmpfds); i++) {
525 		tmpfds[i] = got_opentempfd();
526 		if (tmpfds[i] == -1) {
527 			err = got_error_from_errno("got_opentempfd");
528 			goto done;
529 		}
530 	}
531 
532 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fetchfds) == -1) {
533 		err = got_error_from_errno("socketpair");
534 		goto done;
535 	}
536 
537 	fetchpid = fork();
538 	if (fetchpid == -1) {
539 		err = got_error_from_errno("fork");
540 		goto done;
541 	} else if (fetchpid == 0){
542 		got_privsep_exec_child(imsg_fetchfds,
543 		    GOT_PATH_PROG_FETCH_PACK, tmppackpath);
544 	}
545 
546 	if (close(imsg_fetchfds[1]) != 0) {
547 		err = got_error_from_errno("close");
548 		goto done;
549 	}
550 	imsg_init(&fetchibuf, imsg_fetchfds[0]);
551 	nfetchfd = dup(fetchfd);
552 	if (nfetchfd == -1) {
553 		err = got_error_from_errno("dup");
554 		goto done;
555 	}
556 	err = got_privsep_send_fetch_req(&fetchibuf, nfetchfd, &have_refs);
557 	if (err != NULL)
558 		goto done;
559 	nfetchfd = -1;
560 	err = got_privsep_send_fetch_outfd(&fetchibuf, npackfd);
561 	if (err != NULL)
562 		goto done;
563 	npackfd = dup(packfd);
564 	if (npackfd == -1) {
565 		err = got_error_from_errno("dup");
566 		goto done;
567 	}
568 
569 	packfile_size = 0;
570 	progress = calloc(GOT_FETCH_PKTMAX, 1);
571 	if (progress == NULL) {
572 		err = got_error_from_errno("calloc");
573 		goto done;
574 	}
575 	while (!done) {
576 		struct got_object_id *id = NULL;
577 		char *refname = NULL;
578 		char *server_progress = NULL;
579 		off_t packfile_size_cur = 0;
580 
581 		err = got_privsep_recv_fetch_progress(&done,
582 		    &id, &refname, symrefs, &server_progress,
583 		    &packfile_size_cur, &fetchibuf);
584 		if (err != NULL)
585 			goto done;
586 		if (done) {
587 			if (packfile_size > 0)
588 				*pack_hash = id;
589 			else
590 				free(id);
591 		} else if (refname && id) {
592 			err = got_pathlist_append(refs, refname, id);
593 			if (err)
594 				goto done;
595 		} else if (server_progress) {
596 			char *p;
597 			/*
598 			 * XXX git-daemon tends to send batched output with
599 			 * lines spanning separate packets. Buffer progress
600 			 * output until we see a CR or LF to avoid giving
601 			 * partial lines of progress output to the callback.
602 			 */
603 			if (strlcat(progress, server_progress,
604 			    GOT_FETCH_PKTMAX) >= GOT_FETCH_PKTMAX) {
605 				progress[0] = '\0'; /* discard */
606 				continue;
607 			}
608 			while ((p = strchr(progress, '\r')) != NULL ||
609 			    (p = strchr(progress, '\n')) != NULL) {
610 				char *s;
611 				size_t n;
612 				char c = *p;
613 				*p = '\0';
614 				if (asprintf(&s, "%s%s", progress,
615 				    c == '\n' ? "\n" : "") == -1) {
616 					err = got_error_from_errno("asprintf");
617 					goto done;
618 				}
619 				err = progress_cb(progress_arg, s,
620 				    packfile_size_cur, 0, 0, 0, 0);
621 				free(s);
622 				if (err)
623 					break;
624 				n = strlen(progress);
625 				if (n < GOT_FETCH_PKTMAX - 1) {
626 					memmove(progress, &progress[n + 1],
627 					    GOT_FETCH_PKTMAX - n - 1);
628 				} else
629 					progress[0] = '\0';
630 			}
631 			free(server_progress);
632 			if (err)
633 				goto done;
634 		} else if (packfile_size_cur != packfile_size) {
635 			err = progress_cb(progress_arg, NULL,
636 			    packfile_size_cur, 0, 0, 0, 0);
637 			if (err)
638 				break;
639 			packfile_size = packfile_size_cur;
640 		}
641 	}
642 	if (waitpid(fetchpid, &fetchstatus, 0) == -1) {
643 		err = got_error_from_errno("waitpid");
644 		goto done;
645 	}
646 
647 	/* If zero data was fetched without error we are already up-to-date. */
648 	if (packfile_size == 0)
649 		goto done;
650 
651 	if (lseek(packfd, 0, SEEK_SET) == -1) {
652 		err = got_error_from_errno("lseek");
653 		goto done;
654 	}
655 	err = check_pack_hash(packfd, packfile_size, (*pack_hash)->sha1);
656 	if (err)
657 		goto done;
658  
659 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_idxfds) == -1) {
660 		err = got_error_from_errno("socketpair");
661 		goto done;
662 	}
663 	idxpid = fork();
664 	if (idxpid == -1) {
665 		err= got_error_from_errno("fork");
666 		goto done;
667 	} else if (idxpid == 0)
668 		got_privsep_exec_child(imsg_idxfds,
669 		    GOT_PATH_PROG_INDEX_PACK, tmppackpath);
670 	if (close(imsg_idxfds[1]) != 0) {
671 		err = got_error_from_errno("close");
672 		goto done;
673 	}
674 	imsg_init(&idxibuf, imsg_idxfds[0]);
675 
676 	err = got_privsep_send_index_pack_req(&idxibuf, (*pack_hash)->sha1,
677 	    npackfd);
678 	if (err != NULL)
679 		goto done;
680 	npackfd = -1;
681 	err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
682 	if (err != NULL)
683 		goto done;
684 	nidxfd = -1;
685 	for (i = 0; i < nitems(tmpfds); i++) {
686 		err = got_privsep_send_tmpfd(&idxibuf, tmpfds[i]);
687 		if (err != NULL)
688 			goto done;
689 		tmpfds[i] = -1;
690 	}
691 	done = 0;
692 	while (!done) {
693 		int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
694 
695 		err = got_privsep_recv_index_progress(&done, &nobj_total,
696 		    &nobj_indexed, &nobj_loose, &nobj_resolved,
697 		    &idxibuf);
698 		if (err != NULL)
699 			goto done;
700 		if (nobj_indexed != 0) {
701 			err = progress_cb(progress_arg, NULL,
702 			    packfile_size, nobj_total,
703 			    nobj_indexed, nobj_loose, nobj_resolved);
704 			if (err)
705 				break;
706 		}
707 		imsg_clear(&idxibuf);
708 	}
709 	if (close(imsg_idxfds[0]) == -1) {
710 		err = got_error_from_errno("close");
711 		goto done;
712 	}
713 	if (waitpid(idxpid, &idxstatus, 0) == -1) {
714 		err = got_error_from_errno("waitpid");
715 		goto done;
716 	}
717 
718 	err = got_object_id_str(&id_str, *pack_hash);
719 	if (err)
720 		goto done;
721 	if (asprintf(&packpath, "%s/%s/pack-%s.pack",
722 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
723 		err = got_error_from_errno("asprintf");
724 		goto done;
725 	}
726 
727 	if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
728 	    repo_path, GOT_OBJECTS_PACK_DIR, id_str) == -1) {
729 		err = got_error_from_errno("asprintf");
730 		goto done;
731 	}
732 
733 	if (rename(tmppackpath, packpath) == -1) {
734 		err = got_error_from_errno3("rename", tmppackpath, packpath);
735 		goto done;
736 	}
737 	free(tmppackpath);
738 	tmppackpath = NULL;
739 	if (rename(tmpidxpath, idxpath) == -1) {
740 		err = got_error_from_errno3("rename", tmpidxpath, idxpath);
741 		goto done;
742 	}
743 	free(tmpidxpath);
744 	tmpidxpath = NULL;
745 
746 done:
747 	if (tmppackpath && unlink(tmppackpath) == -1 && err == NULL)
748 		err = got_error_from_errno2("unlink", tmppackpath);
749 	if (tmpidxpath && unlink(tmpidxpath) == -1 && err == NULL)
750 		err = got_error_from_errno2("unlink", tmpidxpath);
751 	if (nfetchfd != -1 && close(nfetchfd) == -1 && err == NULL)
752 		err = got_error_from_errno("close");
753 	if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
754 		err = got_error_from_errno("close");
755 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
756 		err = got_error_from_errno("close");
757 	if (idxfd != -1 && close(idxfd) == -1 && err == NULL)
758 		err = got_error_from_errno("close");
759 	for (i = 0; i < nitems(tmpfds); i++) {
760 		if (tmpfds[i] != -1 && close(tmpfds[i]) == -1 && err == NULL)
761 			err = got_error_from_errno("close");
762 	}
763 	free(tmppackpath);
764 	free(tmpidxpath);
765 	free(idxpath);
766 	free(packpath);
767 	free(ref_prefix);
768 	free(progress);
769 
770 	TAILQ_FOREACH(pe, &have_refs, entry) {
771 		free((char *)pe->path);
772 		free(pe->data);
773 	}
774 	got_pathlist_free(&have_refs);
775 	got_ref_list_free(&my_refs);
776 	if (err) {
777 		free(*pack_hash);
778 		*pack_hash = NULL;
779 		TAILQ_FOREACH(pe, refs, entry) {
780 			free((void *)pe->path);
781 			free(pe->data);
782 		}
783 		got_pathlist_free(refs);
784 		TAILQ_FOREACH(pe, symrefs, entry) {
785 			free((void *)pe->path);
786 			free(pe->data);
787 		}
788 		got_pathlist_free(symrefs);
789 	}
790 	return err;
791 }