1 /*
2  * Copyright (c) 2018, 2019 Ori Bernstein <ori@openbsd.org>
3  * Copyright (c) 2021 Stefan Sperling <stsp@openbsd.org>
4  *
5  * Permission to use, copy, modify, and distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  */
17 
18 #include "got_compat.h"
19 
20 #include <sys/types.h>
21 #include <sys/stat.h>
22 #include <sys/queue.h>
23 #include <sys/uio.h>
24 #include <sys/socket.h>
25 #include <sys/wait.h>
26 #include <sys/resource.h>
27 #include <sys/socket.h>
28 
29 #include <errno.h>
30 #include <err.h>
31 #include <fcntl.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include <stdint.h>
36 #include <unistd.h>
37 #include <zlib.h>
38 #include <ctype.h>
39 #include <limits.h>
40 #include <time.h>
41 
42 #include "got_error.h"
43 #include "got_reference.h"
44 #include "got_repository.h"
45 #include "got_path.h"
46 #include "got_cancel.h"
47 #include "got_worktree.h"
48 #include "got_object.h"
49 #include "got_opentemp.h"
50 #include "got_send.h"
51 #include "got_repository_admin.h"
52 #include "got_commit_graph.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_hash.h"
61 #include "got_lib_privsep.h"
62 #include "got_lib_object_cache.h"
63 #include "got_lib_repository.h"
64 #include "got_lib_ratelimit.h"
65 #include "got_lib_pack_create.h"
66 #include "got_lib_dial.h"
67 
68 #ifndef nitems
69 #define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))
70 #endif
71 
72 #ifndef ssizeof
73 #define ssizeof(_x) ((ssize_t)(sizeof(_x)))
74 #endif
75 
76 #ifndef MIN
77 #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))
78 #endif
79 
80 const struct got_error *
81 got_send_connect(pid_t *sendpid, int *sendfd, const char *proto,
82     const char *host, const char *port, const char *server_path, int verbosity)
83 {
84 	const struct got_error *err = NULL;
85 
86 	*sendpid = -1;
87 	*sendfd = -1;
88 
89 	if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
90 		err = got_dial_ssh(sendpid, sendfd, host, port, server_path,
91 		    GOT_DIAL_DIRECTION_SEND, verbosity);
92 	else if (strcmp(proto, "git") == 0)
93 		err = got_dial_git(sendfd, host, port, server_path,
94 		    GOT_DIAL_DIRECTION_SEND);
95 	else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
96 		err = got_error_path(proto, GOT_ERR_NOT_IMPL);
97 	else
98 		err = got_error_path(proto, GOT_ERR_BAD_PROTO);
99 	return err;
100 }
101 
102 struct pack_progress_arg {
103     got_send_progress_cb progress_cb;
104     void *progress_arg;
105 
106     int ncolored;
107     int nfound;
108     int ntrees;
109     off_t packfile_size;
110     int ncommits;
111     int nobj_total;
112     int nobj_deltify;
113     int nobj_written;
114 };
115 
116 static const struct got_error *
117 pack_progress(void *arg, int ncolored, int nfound, int ntrees,
118     off_t packfile_size, int ncommits, int nobj_total, int nobj_deltify,
119     int nobj_written)
120 {
121 	const struct got_error *err;
122 	struct pack_progress_arg *a = arg;
123 
124 	err = a->progress_cb(a->progress_arg, ncolored, nfound, ntrees,
125 	    packfile_size, ncommits, nobj_total, nobj_deltify,
126 	    nobj_written, 0, NULL, NULL, 0);
127 	if (err)
128 		return err;
129 
130 	a->ncolored= ncolored;
131 	a->nfound = nfound;
132 	a->ntrees = ntrees;
133 	a->packfile_size = packfile_size;
134 	a->ncommits = ncommits;
135 	a->nobj_total = nobj_total;
136 	a->nobj_deltify = nobj_deltify;
137 	a->nobj_written = nobj_written;
138 	return NULL;
139 }
140 
141 static const struct got_error *
142 insert_ref(struct got_reflist_head *refs, const char *refname,
143     struct got_repository *repo)
144 {
145 	const struct got_error *err;
146 	struct got_reference *ref;
147 	struct got_reflist_entry *new;
148 
149 	err = got_ref_open(&ref, repo, refname, 0);
150 	if (err)
151 		return err;
152 
153 	err = got_reflist_insert(&new, refs, ref, got_ref_cmp_by_name, NULL);
154 	if (err || new == NULL /* duplicate */)
155 		got_ref_close(ref);
156 
157 	return err;
158 }
159 
160 static const struct got_error *
161 check_linear_ancestry(const char *refname, struct got_object_id *my_id,
162     struct got_object_id *their_id, struct got_repository *repo,
163     got_cancel_cb cancel_cb, void *cancel_arg)
164 {
165 	const struct got_error *err = NULL;
166 	struct got_object_id *yca_id;
167 	int obj_type;
168 
169 	err = got_object_get_type(&obj_type, repo, their_id);
170 	if (err)
171 		return err;
172 	if (obj_type != GOT_OBJ_TYPE_COMMIT)
173 		return got_error_fmt(GOT_ERR_OBJ_TYPE,
174 		    "bad object type on server for %s", refname);
175 
176 	err = got_commit_graph_find_youngest_common_ancestor(&yca_id,
177 	    my_id, their_id, 1, repo, cancel_cb, cancel_arg);
178 	if (err)
179 		return err;
180 	if (yca_id == NULL)
181 		return got_error_fmt(GOT_ERR_SEND_ANCESTRY, "%s", refname);
182 
183 	/*
184 	 * Require a straight line of history between the two commits,
185 	 * with their commit being older than my commit.
186 	 *
187 	 * Non-linear situations such as this require a rebase:
188 	 *
189 	 * (theirs) D       F (mine)
190 	 *           \     /
191 	 *            C   E
192 	 *             \ /
193 	 *              B (yca)
194 	 *              |
195 	 *              A
196 	 */
197 	if (got_object_id_cmp(their_id, yca_id) != 0)
198 		err = got_error_fmt(GOT_ERR_SEND_ANCESTRY, "%s", refname);
199 
200 	free(yca_id);
201 	return err;
202 }
203 
204 static const struct got_error *
205 realloc_ids(struct got_object_id ***ids, size_t *nalloc, size_t n)
206 {
207 	struct got_object_id **new;
208 	const size_t alloc_chunksz = 256;
209 
210 	if (*nalloc >= n)
211 		return NULL;
212 
213 	new = recallocarray(*ids, *nalloc, *nalloc + alloc_chunksz,
214 	    sizeof(struct got_object_id));
215 	if (new == NULL)
216 		return got_error_from_errno("recallocarray");
217 
218 	*ids = new;
219 	*nalloc += alloc_chunksz;
220 	return NULL;
221 }
222 
223 static struct got_reference *
224 find_ref(struct got_reflist_head *refs, const char *refname)
225 {
226 	struct got_reflist_entry *re;
227 
228 	TAILQ_FOREACH(re, refs, entry) {
229 		if (got_path_cmp(got_ref_get_name(re->ref), refname,
230 		    strlen(got_ref_get_name(re->ref)),
231 		    strlen(refname)) == 0) {
232 			return re->ref;
233 		}
234 	}
235 
236 	return NULL;
237 }
238 
239 static struct got_pathlist_entry *
240 find_their_ref(struct got_pathlist_head *their_refs, const char *refname)
241 {
242 	struct got_pathlist_entry *pe;
243 
244 	TAILQ_FOREACH(pe, their_refs, entry) {
245 		const char *their_refname = pe->path;
246 		if (got_path_cmp(their_refname, refname,
247 		    strlen(their_refname), strlen(refname)) == 0) {
248 			return pe;
249 		}
250 	}
251 
252 	return NULL;
253 }
254 
255 static const struct got_error *
256 get_remote_refname(char **remote_refname, const char *remote_name,
257     const char *refname)
258 {
259 	if (strncmp(refname, "refs/", 5) == 0)
260 		refname += 5;
261 	if (strncmp(refname, "heads/", 6) == 0)
262 		refname += 6;
263 
264 	if (asprintf(remote_refname, "refs/remotes/%s/%s",
265 	    remote_name, refname) == -1)
266 		return got_error_from_errno("asprintf");
267 
268 	return NULL;
269 }
270 
271 static const struct got_error *
272 update_remote_ref(struct got_reference *my_ref, const char *remote_name,
273     struct got_repository *repo)
274 {
275 	const struct got_error *err, *unlock_err;
276 	struct got_object_id *my_id;
277 	struct got_reference *ref = NULL;
278 	char *remote_refname = NULL;
279 	int ref_locked = 0;
280 
281 	err = got_ref_resolve(&my_id, repo, my_ref);
282 	if (err)
283 		return err;
284 
285 	err = get_remote_refname(&remote_refname, remote_name,
286 	    got_ref_get_name(my_ref));
287 	if (err)
288 		goto done;
289 
290 	err = got_ref_open(&ref, repo, remote_refname, 1 /* lock */);
291 	if (err) {
292 		if (err->code != GOT_ERR_NOT_REF)
293 			goto done;
294 		err = got_ref_alloc(&ref, remote_refname, my_id);
295 		if (err)
296 			goto done;
297 	} else {
298 		ref_locked = 1;
299 		err = got_ref_change_ref(ref, my_id);
300 		if (err)
301 			goto done;
302 	}
303 
304 	err = got_ref_write(ref, repo);
305 done:
306 	if (ref) {
307 		if (ref_locked) {
308 			unlock_err = got_ref_unlock(ref);
309 			if (unlock_err && err == NULL)
310 				err = unlock_err;
311 		}
312 		got_ref_close(ref);
313 	}
314 	free(my_id);
315 	free(remote_refname);
316 	return err;
317 }
318 
319 const struct got_error*
320 got_send_pack(const char *remote_name, struct got_pathlist_head *branch_names,
321     struct got_pathlist_head *tag_names,
322     struct got_pathlist_head *delete_branches,
323     int verbosity, int overwrite_refs, int sendfd,
324     struct got_repository *repo, got_send_progress_cb progress_cb,
325     void *progress_arg, got_cancel_cb cancel_cb, void *cancel_arg)
326 {
327 	int imsg_sendfds[2];
328 	int npackfd = -1, nsendfd = -1;
329 	int sendstatus, done = 0;
330 	const struct got_error *err;
331 	struct imsgbuf sendibuf;
332 	pid_t sendpid = -1;
333 	struct got_reflist_head refs;
334 	struct got_pathlist_head have_refs;
335 	struct got_pathlist_head their_refs;
336 	struct got_pathlist_entry *pe;
337 	struct got_reflist_entry *re;
338 	struct got_object_id **our_ids = NULL;
339 	struct got_object_id **their_ids = NULL;
340 	int i, nours = 0, ntheirs = 0;
341 	size_t nalloc_ours = 0, nalloc_theirs = 0;
342 	int refs_to_send = 0, refs_to_delete = 0;
343 	off_t bytes_sent = 0, bytes_sent_cur = 0;
344 	struct pack_progress_arg ppa;
345 	uint8_t packsha1[SHA1_DIGEST_LENGTH];
346 	int packfd = -1;
347 	FILE *delta_cache = NULL;
348 
349 	TAILQ_INIT(&refs);
350 	TAILQ_INIT(&have_refs);
351 	TAILQ_INIT(&their_refs);
352 
353 	TAILQ_FOREACH(pe, branch_names, entry) {
354 		const char *branchname = pe->path;
355 		if (strncmp(branchname, "refs/heads/", 11) != 0) {
356 			char *s;
357 			if (asprintf(&s, "refs/heads/%s", branchname) == -1) {
358 				err = got_error_from_errno("asprintf");
359 				goto done;
360 			}
361 			err = insert_ref(&refs, s, repo);
362 			free(s);
363 		} else {
364 			err = insert_ref(&refs, branchname, repo);
365 		}
366 		if (err)
367 			goto done;
368 	}
369 
370 	TAILQ_FOREACH(pe, delete_branches, entry) {
371 		const char *branchname = pe->path;
372 		struct got_reference *ref;
373 		if (strncmp(branchname, "refs/heads/", 11) != 0) {
374 			err = got_error_fmt(GOT_ERR_SEND_DELETE_REF, "%s",
375 			    branchname);
376 			goto done;
377 		}
378 		ref = find_ref(&refs, branchname);
379 		if (ref) {
380 			err = got_error_fmt(GOT_ERR_SEND_DELETE_REF,
381 			    "changes on %s will be sent to server",
382 			    branchname);
383 			goto done;
384 		}
385 	}
386 
387 	TAILQ_FOREACH(pe, tag_names, entry) {
388 		const char *tagname = pe->path;
389 		if (strncmp(tagname, "refs/tags/", 10) != 0) {
390 			char *s;
391 			if (asprintf(&s, "refs/tags/%s", tagname) == -1) {
392 				err = got_error_from_errno("asprintf");
393 				goto done;
394 			}
395 			err = insert_ref(&refs, s, repo);
396 			free(s);
397 		} else {
398 			err = insert_ref(&refs, tagname, repo);
399 		}
400 		if (err)
401 			goto done;
402 	}
403 
404 	if (TAILQ_EMPTY(&refs) && TAILQ_EMPTY(delete_branches)) {
405 		err = got_error(GOT_ERR_SEND_EMPTY);
406 		goto done;
407 	}
408 
409 	TAILQ_FOREACH(re, &refs, entry) {
410 		struct got_object_id *id;
411 		int obj_type;
412 
413 		if (got_ref_is_symbolic(re->ref)) {
414 			err = got_error_fmt(GOT_ERR_BAD_REF_TYPE,
415 			    "cannot send symbolic reference %s",
416 			    got_ref_get_name(re->ref));
417 			goto done;
418 		}
419 
420 		err = got_ref_resolve(&id, repo, re->ref);
421 		if (err)
422 			goto done;
423 		err = got_object_get_type(&obj_type, repo, id);
424 		free(id);
425 		if (err)
426 			goto done;
427 		switch (obj_type) {
428 		case GOT_OBJ_TYPE_COMMIT:
429 		case GOT_OBJ_TYPE_TAG:
430 			break;
431 		default:
432 			err = got_error_fmt(GOT_ERR_OBJ_TYPE,
433 			    "cannot send %s", got_ref_get_name(re->ref));
434 			goto done;
435 		}
436 	}
437 
438 	packfd = got_opentempfd();
439 	if (packfd == -1) {
440 		err = got_error_from_errno("got_opentempfd");
441 		goto done;
442 	}
443 
444 	delta_cache = got_opentemp();
445 	if (delta_cache == NULL) {
446 		err = got_error_from_errno("got_opentemp");
447 		goto done;
448 	}
449 
450 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_sendfds) == -1) {
451 		err = got_error_from_errno("socketpair");
452 		goto done;
453 	}
454 
455 	sendpid = fork();
456 	if (sendpid == -1) {
457 		err = got_error_from_errno("fork");
458 		goto done;
459 	} else if (sendpid == 0){
460 		got_privsep_exec_child(imsg_sendfds,
461 		    GOT_PATH_PROG_SEND_PACK, got_repo_get_path(repo));
462 	}
463 
464 	if (close(imsg_sendfds[1]) == -1) {
465 		err = got_error_from_errno("close");
466 		goto done;
467 	}
468 	imsg_init(&sendibuf, imsg_sendfds[0]);
469 	nsendfd = dup(sendfd);
470 	if (nsendfd == -1) {
471 		err = got_error_from_errno("dup");
472 		goto done;
473 	}
474 
475 	/*
476 	 * Convert reflist to pathlist since the privsep layer
477 	 * is linked into helper programs which lack reference.c.
478 	 */
479 	TAILQ_FOREACH(re, &refs, entry) {
480 		struct got_object_id *id;
481 		err = got_ref_resolve(&id, repo, re->ref);
482 		if (err)
483 			goto done;
484 		err = got_pathlist_append(&have_refs,
485 		    got_ref_get_name(re->ref), id);
486 		if (err)
487 			goto done;
488 		/*
489 		 * Also prepare the array of our object IDs which
490 		 * will be needed for generating a pack file.
491 		 */
492 		err = realloc_ids(&our_ids, &nalloc_ours, nours + 1);
493 		if (err)
494 			goto done;
495 		our_ids[nours] = id;
496 		nours++;
497 	}
498 
499 	err = got_privsep_send_send_req(&sendibuf, nsendfd, &have_refs,
500 	    delete_branches, verbosity);
501 	if (err)
502 		goto done;
503 	nsendfd = -1;
504 
505 	err = got_privsep_recv_send_remote_refs(&their_refs, &sendibuf);
506 	if (err)
507 		goto done;
508 
509 	/*
510 	 * Process references reported by the server.
511 	 * Push appropriate object IDs onto the "their IDs" array.
512 	 * This array will be used to exclude objects which already
513 	 * exist on the server from our pack file.
514 	 */
515 	TAILQ_FOREACH(pe, &their_refs, entry) {
516 		const char *refname = pe->path;
517 		struct got_object_id *their_id = pe->data;
518 		int have_their_id;
519 		struct got_object *obj;
520 		struct got_reference *my_ref = NULL;
521 		int is_tag = 0;
522 
523 		/* Don't blindly trust the server to send us valid names. */
524 		if (!got_ref_name_is_valid(refname))
525 			continue;
526 
527 		if (strncmp(refname, "refs/tags/", 10) == 0)
528 			is_tag = 1;
529 		/*
530 		 * Find out whether this is a reference we want to upload.
531 		 * Otherwise we can still use this reference as a hint to
532 		 * avoid uploading any objects the server already has.
533 		 */
534 		my_ref = find_ref(&refs, refname);
535 		if (my_ref) {
536 			struct got_object_id *my_id;
537 			err = got_ref_resolve(&my_id, repo, my_ref);
538 			if (err)
539 				goto done;
540 			if (got_object_id_cmp(my_id, their_id) != 0) {
541 				if (!overwrite_refs && is_tag) {
542 					err = got_error_fmt(
543 					    GOT_ERR_SEND_TAG_EXISTS,
544 					    "%s", refname);
545 					free(my_id);
546 					goto done;
547 				}
548 				refs_to_send++;
549 			}
550 			free(my_id);
551 		}
552 
553 		/* Check if their object exists locally. */
554 		err = got_object_open(&obj, repo, their_id);
555 		if (err) {
556 			if (err->code != GOT_ERR_NO_OBJ)
557 				goto done;
558 			if (!overwrite_refs && my_ref != NULL) {
559 				err = got_error_fmt(GOT_ERR_SEND_ANCESTRY,
560 				    "%s", refname);
561 				goto done;
562 			}
563 			have_their_id = 0;
564 		} else {
565 			got_object_close(obj);
566 			have_their_id = 1;
567 		}
568 
569 		err = realloc_ids(&their_ids, &nalloc_theirs, ntheirs + 1);
570 		if (err)
571 			goto done;
572 
573 		if (have_their_id) {
574 			/* Enforce linear ancestry if required. */
575 			if (!overwrite_refs && my_ref && !is_tag) {
576 				struct got_object_id *my_id;
577 				err = got_ref_resolve(&my_id, repo, my_ref);
578 				if (err)
579 					goto done;
580 				err = check_linear_ancestry(refname, my_id,
581 				    their_id, repo, cancel_cb, cancel_arg);
582 				free(my_id);
583 				my_id = NULL;
584 				if (err)
585 					goto done;
586 			}
587 			/* Exclude any objects reachable via their ID. */
588 			their_ids[ntheirs] = got_object_id_dup(their_id);
589 			if (their_ids[ntheirs] == NULL) {
590 				err = got_error_from_errno("got_object_id_dup");
591 				goto done;
592 			}
593 			ntheirs++;
594 		} else if (!is_tag) {
595 			char *remote_refname;
596 			struct got_reference *ref;
597 			/*
598 			 * Exclude any objects which exist on the server
599 			 * according to a locally cached remote reference.
600 			 */
601 			err = get_remote_refname(&remote_refname,
602 			    remote_name, refname);
603 			if (err)
604 				goto done;
605 			err = got_ref_open(&ref, repo, remote_refname, 0);
606 			free(remote_refname);
607 			if (err) {
608 				if (err->code != GOT_ERR_NOT_REF)
609 					goto done;
610 			} else {
611 				err = got_ref_resolve(&their_ids[ntheirs],
612 				    repo, ref);
613 				got_ref_close(ref);
614 				if (err)
615 					goto done;
616 				ntheirs++;
617 			}
618 		}
619 	}
620 
621 	/* Account for any new references we are going to upload. */
622 	TAILQ_FOREACH(re, &refs, entry) {
623 		if (find_their_ref(&their_refs,
624 		    got_ref_get_name(re->ref)) == NULL)
625 			refs_to_send++;
626 	}
627 
628 	/* Account for any existing references we are going to delete. */
629 	TAILQ_FOREACH(pe, delete_branches, entry) {
630 		const char *branchname = pe->path;
631 		if (find_their_ref(&their_refs, branchname))
632 			refs_to_delete++;
633 	}
634 
635 	if (refs_to_send == 0 && refs_to_delete == 0) {
636 		got_privsep_send_stop(imsg_sendfds[0]);
637 		goto done;
638 	}
639 
640 	if (refs_to_send > 0) {
641 		struct got_ratelimit rl;
642 		got_ratelimit_init(&rl, 0, 500);
643 		memset(&ppa, 0, sizeof(ppa));
644 		ppa.progress_cb = progress_cb;
645 		ppa.progress_arg = progress_arg;
646 		err = got_pack_create(packsha1, packfd, delta_cache,
647 		    their_ids, ntheirs, our_ids, nours, repo, 0, 1, 0,
648 		    pack_progress, &ppa, &rl, cancel_cb, cancel_arg);
649 		if (err)
650 			goto done;
651 
652 		npackfd = dup(packfd);
653 		if (npackfd == -1) {
654 			err = got_error_from_errno("dup");
655 			goto done;
656 		}
657 		err = got_privsep_send_packfd(&sendibuf, npackfd);
658 		if (err != NULL)
659 			goto done;
660 		npackfd = -1;
661 	} else {
662 		err = got_privsep_send_packfd(&sendibuf, -1);
663 		if (err != NULL)
664 			goto done;
665 	}
666 
667 	while (!done) {
668 		int success = 0;
669 		char *refname = NULL;
670 		char *errmsg = NULL;
671 
672 		if (cancel_cb) {
673 			err = (*cancel_cb)(cancel_arg);
674 			if (err)
675 				goto done;
676 		}
677 		err = got_privsep_recv_send_progress(&done, &bytes_sent,
678 		    &success, &refname, &errmsg, &sendibuf);
679 		if (err)
680 			goto done;
681 		if (refname && got_ref_name_is_valid(refname) && success &&
682 		    strncmp(refname, "refs/tags/", 10) != 0) {
683 			struct got_reference *my_ref;
684 			/*
685 			 * The server has accepted our changes.
686 			 * Update our reference in refs/remotes/ accordingly.
687 			 */
688 			my_ref = find_ref(&refs, refname);
689 			if (my_ref) {
690 				err = update_remote_ref(my_ref, remote_name,
691 				    repo);
692 				if (err)
693 					goto done;
694 			}
695 		}
696 		if (refname != NULL ||
697 		    bytes_sent_cur != bytes_sent) {
698 			err = progress_cb(progress_arg, ppa.ncolored,
699 			    ppa.nfound, ppa.ntrees, ppa.packfile_size,
700 			    ppa.ncommits, ppa.nobj_total, ppa.nobj_deltify,
701 			    ppa.nobj_written, bytes_sent,
702 			    refname, errmsg, success);
703 			if (err) {
704 				free(refname);
705 				free(errmsg);
706 				goto done;
707 			}
708 			bytes_sent_cur = bytes_sent;
709 		}
710 		free(refname);
711 		free(errmsg);
712 	}
713 done:
714 	if (sendpid != -1) {
715 		if (err)
716 			got_privsep_send_stop(imsg_sendfds[0]);
717 		if (waitpid(sendpid, &sendstatus, 0) == -1 && err == NULL)
718 			err = got_error_from_errno("waitpid");
719 	}
720 	if (packfd != -1 && close(packfd) == -1 && err == NULL)
721 		err = got_error_from_errno("close");
722 	if (delta_cache && fclose(delta_cache) == EOF && err == NULL)
723 		err = got_error_from_errno("fclose");
724 	if (nsendfd != -1 && close(nsendfd) == -1 && err == NULL)
725 		err = got_error_from_errno("close");
726 	if (npackfd != -1 && close(npackfd) == -1 && err == NULL)
727 		err = got_error_from_errno("close");
728 
729 	got_ref_list_free(&refs);
730 	got_pathlist_free(&have_refs, GOT_PATHLIST_FREE_NONE);
731 	got_pathlist_free(&their_refs, GOT_PATHLIST_FREE_NONE);
732 	for (i = 0; i < nours; i++)
733 		free(our_ids[i]);
734 	free(our_ids);
735 	for (i = 0; i < ntheirs; i++)
736 		free(their_ids[i]);
737 	free(their_ids);
738 	return err;
739 }