Bug Summary

File:got/../lib/fetch.c
Warning:line 758, column 2
Value stored to 'nidxfd' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd6.9 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name fetch.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/local/lib/clang/11.1.0 -I /home/ben/Projects/got/got/../include -I /home/ben/Projects/got/got/../lib -D GOT_LIBEXECDIR=/home/ben/bin -D GOT_VERSION=0.53-current -internal-isystem /usr/local/lib/clang/11.1.0/include -internal-externc-isystem /usr/include -O0 -fdebug-compilation-dir /home/ben/Projects/got/got/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /home/ben/Projects/got/scan/2021-05-28-230913-68537-1 -x c /home/ben/Projects/got/got/../lib/fetch.c
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/resource.h>
24#include <sys/socket.h>
25
26#include <endian.h>
27#include <errno(*__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 <unistd.h>
36#include <zlib.h>
37#include <ctype.h>
38#include <limits.h>
39#include <imsg.h>
40#include <time.h>
41#include <uuid.h>
42#include <netdb.h>
43#include <netinet/in.h>
44
45#include "got_error.h"
46#include "got_reference.h"
47#include "got_repository.h"
48#include "got_path.h"
49#include "got_cancel.h"
50#include "got_worktree.h"
51#include "got_object.h"
52#include "got_opentemp.h"
53#include "got_fetch.h"
54
55#include "got_lib_delta.h"
56#include "got_lib_inflate.h"
57#include "got_lib_object.h"
58#include "got_lib_object_parse.h"
59#include "got_lib_object_create.h"
60#include "got_lib_pack.h"
61#include "got_lib_sha1.h"
62#include "got_lib_privsep.h"
63#include "got_lib_object_cache.h"
64#include "got_lib_repository.h"
65
66#ifndef nitems
67#define nitems(_a)(sizeof((_a)) / sizeof((_a)[0])) (sizeof((_a)) / sizeof((_a)[0]))
68#endif
69
70#ifndef ssizeof
71#define ssizeof(_x)((ssize_t)(sizeof(_x))) ((ssize_t)(sizeof(_x)))
72#endif
73
74#ifndef MIN
75#define MIN(_a,_b)((_a) < (_b) ? (_a) : (_b)) ((_a) < (_b) ? (_a) : (_b))
76#endif
77
78static int
79hassuffix(char *base, char *suf)
80{
81 int nb, ns;
82
83 nb = strlen(base);
84 ns = strlen(suf);
85 if (ns <= nb && strcmp(base + (nb - ns), suf) == 0)
86 return 1;
87 return 0;
88}
89
90static const struct got_error *
91dial_ssh(pid_t *fetchpid, int *fetchfd, const char *host, const char *port,
92 const char *path, const char *direction, int verbosity)
93{
94 const struct got_error *error = NULL((void *)0);
95 int pid, pfd[2];
96 char cmd[64];
97 char *argv[11];
98 int i = 0, j;
99
100 *fetchpid = -1;
101 *fetchfd = -1;
102
103 argv[i++] = GOT_FETCH_PATH_SSH"/usr/bin/ssh";
104 if (port != NULL((void *)0)) {
105 argv[i++] = "-p";
106 argv[i++] = (char *)port;
107 }
108 if (verbosity == -1) {
109 argv[i++] = "-q";
110 } else {
111 /* ssh(1) allows up to 3 "-v" options. */
112 for (j = 0; j < MIN(3, verbosity)((3) < (verbosity) ? (3) : (verbosity)); j++)
113 argv[i++] = "-v";
114 }
115 argv[i++] = "--";
116 argv[i++] = (char *)host;
117 argv[i++] = (char *)cmd;
118 argv[i++] = (char *)path;
119 argv[i++] = NULL((void *)0);
120
121 if (pipe(pfd) == -1)
122 return got_error_from_errno("pipe");
123
124 pid = fork();
125 if (pid == -1) {
126 error = got_error_from_errno("fork");
127 close(pfd[0]);
128 close(pfd[1]);
129 return error;
130 } else if (pid == 0) {
131 int n;
132 if (close(pfd[1]) == -1)
133 err(1, "close");
134 if (dup2(pfd[0], 0) == -1)
135 err(1, "dup2");
136 if (dup2(pfd[0], 1) == -1)
137 err(1, "dup2");
138 n = snprintf(cmd, sizeof(cmd), "git-%s-pack", direction);
139 if (n < 0 || n >= ssizeof(cmd)((ssize_t)(sizeof(cmd))))
140 err(1, "snprintf");
141 if (execv(GOT_FETCH_PATH_SSH"/usr/bin/ssh", argv) == -1)
142 err(1, "execv");
143 abort(); /* not reached */
144 } else {
145 if (close(pfd[0]) == -1)
146 return got_error_from_errno("close");
147 *fetchpid = pid;
148 *fetchfd = pfd[1];
149 return NULL((void *)0);
150 }
151}
152
153static const struct got_error *
154dial_git(int *fetchfd, const char *host, const char *port, const char *path,
155 const char *direction)
156{
157 const struct got_error *err = NULL((void *)0);
158 struct addrinfo hints, *servinfo, *p;
159 char *cmd = NULL((void *)0), *pkt = NULL((void *)0);
160 int fd = -1, totlen, r, eaicode;
161
162 *fetchfd = -1;
163
164 if (port == NULL((void *)0))
165 port = GOT_DEFAULT_GIT_PORT_STR"9418";
166
167 memset(&hints, 0, sizeof hints);
168 hints.ai_family = AF_UNSPEC0;
169 hints.ai_socktype = SOCK_STREAM1;
170 eaicode = getaddrinfo(host, port, &hints, &servinfo);
171 if (eaicode) {
172 char msg[512];
173 snprintf(msg, sizeof(msg), "%s: %s", host,
174 gai_strerror(eaicode));
175 return got_error_msg(GOT_ERR_ADDRINFO121, msg);
176 }
177
178 for (p = servinfo; p != NULL((void *)0); p = p->ai_next) {
179 if ((fd = socket(p->ai_family, p->ai_socktype,
180 p->ai_protocol)) == -1)
181 continue;
182 if (connect(fd, p->ai_addr, p->ai_addrlen) == 0) {
183 err = NULL((void *)0);
184 break;
185 }
186 err = got_error_from_errno("connect");
187 close(fd);
188 }
189 if (p == NULL((void *)0))
190 goto done;
191
192 if (asprintf(&cmd, "git-%s-pack %s", direction, path) == -1) {
193 err = got_error_from_errno("asprintf");
194 goto done;
195 }
196 totlen = 4 + strlen(cmd) + 1 + strlen("host=") + strlen(host) + 1;
197 if (asprintf(&pkt, "%04x%s", totlen, cmd) == -1) {
198 err = got_error_from_errno("asprintf");
199 goto done;
200 }
201 r = write(fd, pkt, strlen(pkt) + 1);
202 if (r == -1) {
203 err = got_error_from_errno("write");
204 goto done;
205 }
206 if (asprintf(&pkt, "host=%s", host) == -1) {
207 err = got_error_from_errno("asprintf");
208 goto done;
209 }
210 r = write(fd, pkt, strlen(pkt) + 1);
211 if (r == -1) {
212 err = got_error_from_errno("write");
213 goto done;
214 }
215done:
216 free(cmd);
217 free(pkt);
218 if (err) {
219 if (fd != -1)
220 close(fd);
221 } else
222 *fetchfd = fd;
223 return err;
224}
225
226const struct got_error *
227got_fetch_connect(pid_t *fetchpid, int *fetchfd, const char *proto,
228 const char *host, const char *port, const char *server_path, int verbosity)
229{
230 const struct got_error *err = NULL((void *)0);
231
232 *fetchpid = -1;
233 *fetchfd = -1;
234
235 if (strcmp(proto, "ssh") == 0 || strcmp(proto, "git+ssh") == 0)
236 err = dial_ssh(fetchpid, fetchfd, host, port, server_path,
237 "upload", verbosity);
238 else if (strcmp(proto, "git") == 0)
239 err = dial_git(fetchfd, host, port, server_path, "upload");
240 else if (strcmp(proto, "http") == 0 || strcmp(proto, "git+http") == 0)
241 err = got_error_path(proto, GOT_ERR_NOT_IMPL18);
242 else
243 err = got_error_path(proto, GOT_ERR_BAD_PROTO120);
244 return err;
245}
246
247const struct got_error *
248got_fetch_parse_uri(char **proto, char **host, char **port,
249 char **server_path, char **repo_name, const char *uri)
250{
251 const struct got_error *err = NULL((void *)0);
252 char *s, *p, *q;
253 int n;
254
255 *proto = *host = *port = *server_path = *repo_name = NULL((void *)0);
256
257 p = strstr(uri, "://");
258 if (!p) {
259 /* Try parsing Git's "scp" style URL syntax. */
260 *proto = strdup("ssh");
261 if (proto == NULL((void *)0)) {
262 err = got_error_from_errno("strdup");
263 goto done;
264 }
265 s = (char *)uri;
266 q = strchr(s, ':');
267 if (q == NULL((void *)0)) {
268 err = got_error(GOT_ERR_PARSE_URI119);
269 goto done;
270 }
271 /* No slashes allowed before first colon. */
272 p = strchr(s, '/');
273 if (p && q > p) {
274 err = got_error(GOT_ERR_PARSE_URI119);
275 goto done;
276 }
277 *host = strndup(s, q - s);
278 if (*host == NULL((void *)0)) {
279 err = got_error_from_errno("strndup");
280 goto done;
281 }
282 p = q + 1;
283 } else {
284 *proto = strndup(uri, p - uri);
285 if (proto == NULL((void *)0)) {
286 err = got_error_from_errno("strndup");
287 goto done;
288 }
289 s = p + 3;
290
291 p = strstr(s, "/");
292 if (p == NULL((void *)0) || strlen(p) == 1) {
293 err = got_error(GOT_ERR_PARSE_URI119);
294 goto done;
295 }
296
297 q = memchr(s, ':', p - s);
298 if (q) {
299 *host = strndup(s, q - s);
300 if (*host == NULL((void *)0)) {
301 err = got_error_from_errno("strndup");
302 goto done;
303 }
304 *port = strndup(q + 1, p - (q + 1));
305 if (*port == NULL((void *)0)) {
306 err = got_error_from_errno("strndup");
307 goto done;
308 }
309 } else {
310 *host = strndup(s, p - s);
311 if (*host == NULL((void *)0)) {
312 err = got_error_from_errno("strndup");
313 goto done;
314 }
315 }
316 }
317
318 while (p[0] == '/' && p[1] == '/')
319 p++;
320 *server_path = strdup(p);
321 if (*server_path == NULL((void *)0)) {
322 err = got_error_from_errno("strdup");
323 goto done;
324 }
325 got_path_strip_trailing_slashes(*server_path);
326
327 p = strrchr(p, '/');
328 if (!p || strlen(p) <= 1) {
329 err = got_error(GOT_ERR_PARSE_URI119);
330 goto done;
331 }
332 p++;
333 n = strlen(p);
334 if (n == 0) {
335 err = got_error(GOT_ERR_PARSE_URI119);
336 goto done;
337 }
338 if (hassuffix(p, ".git"))
339 n -= 4;
340 *repo_name = strndup(p, (p + n) - p);
341 if (*repo_name == NULL((void *)0)) {
342 err = got_error_from_errno("strndup");
343 goto done;
344 }
345done:
346 if (err) {
347 free(*proto);
348 *proto = NULL((void *)0);
349 free(*host);
350 *host = NULL((void *)0);
351 free(*port);
352 *port = NULL((void *)0);
353 free(*server_path);
354 *server_path = NULL((void *)0);
355 free(*repo_name);
356 *repo_name = NULL((void *)0);
357 }
358 return err;
359}
360
361const struct got_error*
362got_fetch_pack(struct got_object_id **pack_hash, struct got_pathlist_head *refs,
363 struct got_pathlist_head *symrefs, const char *remote_name,
364 int mirror_references, int fetch_all_branches,
365 struct got_pathlist_head *wanted_branches,
366 struct got_pathlist_head *wanted_refs, int list_refs_only, int verbosity,
367 int fetchfd, struct got_repository *repo,
368 got_fetch_progress_cb progress_cb, void *progress_arg)
369{
370 size_t i;
371 int imsg_fetchfds[2], imsg_idxfds[2];
372 int packfd = -1, npackfd = -1, idxfd = -1, nidxfd = -1, nfetchfd = -1;
373 int tmpfds[3];
374 int fetchstatus, idxstatus, done = 0;
375 const struct got_error *err;
376 struct imsgbuf fetchibuf, idxibuf;
377 pid_t fetchpid, idxpid;
378 char *tmppackpath = NULL((void *)0), *tmpidxpath = NULL((void *)0);
379 char *packpath = NULL((void *)0), *idxpath = NULL((void *)0), *id_str = NULL((void *)0);
380 const char *repo_path = NULL((void *)0);
381 struct got_pathlist_head have_refs;
382 struct got_pathlist_entry *pe;
383 struct got_reflist_head my_refs;
384 struct got_reflist_entry *re;
385 off_t packfile_size = 0;
386 struct got_packfile_hdr pack_hdr;
387 uint32_t nobj = 0;
388 char *ref_prefix = NULL((void *)0);
389 size_t ref_prefixlen = 0;
390 char *path;
391 char *progress = NULL((void *)0);
392
393 *pack_hash = NULL((void *)0);
394
395 /*
396 * Prevent fetching of references that won't make any
397 * sense outside of the remote repository's context.
398 */
399 TAILQ_FOREACH(pe, wanted_refs, entry)for((pe) = ((wanted_refs)->tqh_first); (pe) != ((void *)0)
; (pe) = ((pe)->entry.tqe_next)) {
400 const char *refname = pe->path;
401 if (strncmp(refname, "refs/got/", 9) == 0 ||
402 strncmp(refname, "got/", 4) == 0 ||
403 strncmp(refname, "refs/remotes/", 13) == 0 ||
404 strncmp(refname, "remotes/", 8) == 0)
405 return got_error_path(refname, GOT_ERR_FETCH_BAD_REF125);
406 }
407
408 if (!list_refs_only)
409 repo_path = got_repo_get_path_git_dir(repo);
410
411 for (i = 0; i < nitems(tmpfds)(sizeof((tmpfds)) / sizeof((tmpfds)[0])); i++)
412 tmpfds[i] = -1;
413
414 TAILQ_INIT(&have_refs)do { (&have_refs)->tqh_first = ((void *)0); (&have_refs
)->tqh_last = &(&have_refs)->tqh_first; } while
(0);
415 TAILQ_INIT(&my_refs)do { (&my_refs)->tqh_first = ((void *)0); (&my_refs
)->tqh_last = &(&my_refs)->tqh_first; } while (
0);
416
417 if (!mirror_references) {
418 if (asprintf(&ref_prefix, "refs/remotes/%s/",
419 remote_name) == -1)
420 return got_error_from_errno("asprintf");
421 ref_prefixlen = strlen(ref_prefix);
422 }
423
424 if (!list_refs_only) {
425 err = got_ref_list(&my_refs, repo, NULL((void *)0),
426 got_ref_cmp_by_name, NULL((void *)0));
427 if (err)
428 goto done;
429 }
430
431 TAILQ_FOREACH(re, &my_refs, entry)for((re) = ((&my_refs)->tqh_first); (re) != ((void *)0
); (re) = ((re)->entry.tqe_next)) {
432 struct got_object_id *id;
433 const char *refname;
434
435 if (got_ref_is_symbolic(re->ref))
436 continue;
437
438 refname = got_ref_get_name(re->ref);
439
440 if (mirror_references) {
441 char *name;
442 err = got_ref_resolve(&id, repo, re->ref);
443 if (err)
444 goto done;
445 name = strdup(refname);
446 if (name == NULL((void *)0)) {
447 err = got_error_from_errno("strdup");
448 goto done;
449 }
450 err = got_pathlist_append(&have_refs, name, id);
451 if (err)
452 goto done;
453 continue;
454 }
455
456 if (strncmp("refs/tags/", refname, 10) == 0) {
457 char *tagname;
458
459 err = got_ref_resolve(&id, repo, re->ref);
460 if (err)
461 goto done;
462 tagname = strdup(refname);
463 if (tagname == NULL((void *)0)) {
464 err = got_error_from_errno("strdup");
465 goto done;
466 }
467 err = got_pathlist_append(&have_refs, tagname, id);
468 if (err) {
469 free(tagname);
470 goto done;
471 }
472 }
473
474 if (strncmp(ref_prefix, refname, ref_prefixlen) == 0) {
475 char *branchname;
476
477 err = got_ref_resolve(&id, repo, re->ref);
478 if (err)
479 goto done;
480
481 if (asprintf(&branchname, "refs/heads/%s",
482 refname + ref_prefixlen) == -1) {
483 err = got_error_from_errno("asprintf");
484 goto done;
485 }
486 err = got_pathlist_append(&have_refs, branchname, id);
487 if (err) {
488 free(branchname);
489 goto done;
490 }
491 }
492 }
493
494 if (list_refs_only) {
495 packfd = got_opentempfd();
496 if (packfd == -1) {
497 err = got_error_from_errno("got_opentempfd");
498 goto done;
499 }
500 } else {
501 if (asprintf(&path, "%s/%s/fetching.pack",
502 repo_path, GOT_OBJECTS_PACK_DIR"objects/pack") == -1) {
503 err = got_error_from_errno("asprintf");
504 goto done;
505 }
506 err = got_opentemp_named_fd(&tmppackpath, &packfd, path);
507 free(path);
508 if (err)
509 goto done;
510 if (fchmod(packfd, GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004)) != 0) {
511 err = got_error_from_errno2("fchmod", tmppackpath);
512 goto done;
513 }
514 }
515 if (list_refs_only) {
516 idxfd = got_opentempfd();
517 if (idxfd == -1) {
518 err = got_error_from_errno("got_opentempfd");
519 goto done;
520 }
521 } else {
522 if (asprintf(&path, "%s/%s/fetching.idx",
523 repo_path, GOT_OBJECTS_PACK_DIR"objects/pack") == -1) {
524 err = got_error_from_errno("asprintf");
525 goto done;
526 }
527 err = got_opentemp_named_fd(&tmpidxpath, &idxfd, path);
528 free(path);
529 if (err)
530 goto done;
531 if (fchmod(idxfd, GOT_DEFAULT_FILE_MODE(0100000 | 0000400|0000200 | 0000040 | 0000004)) != 0) {
532 err = got_error_from_errno2("fchmod", tmpidxpath);
533 goto done;
534 }
535 }
536 nidxfd = dup(idxfd);
537 if (nidxfd == -1) {
538 err = got_error_from_errno("dup");
539 goto done;
540 }
541
542 for (i = 0; i < nitems(tmpfds)(sizeof((tmpfds)) / sizeof((tmpfds)[0])); i++) {
543 tmpfds[i] = got_opentempfd();
544 if (tmpfds[i] == -1) {
545 err = got_error_from_errno("got_opentempfd");
546 goto done;
547 }
548 }
549
550 if (socketpair(AF_UNIX1, SOCK_STREAM1, PF_UNSPEC0, imsg_fetchfds) == -1) {
551 err = got_error_from_errno("socketpair");
552 goto done;
553 }
554
555 fetchpid = fork();
556 if (fetchpid == -1) {
557 err = got_error_from_errno("fork");
558 goto done;
559 } else if (fetchpid == 0){
560 got_privsep_exec_child(imsg_fetchfds,
561 GOT_PATH_PROG_FETCH_PACK"/home/ben/bin" "/" "got-fetch-pack", tmppackpath);
562 }
563
564 if (close(imsg_fetchfds[1]) == -1) {
565 err = got_error_from_errno("close");
566 goto done;
567 }
568 imsg_init(&fetchibuf, imsg_fetchfds[0]);
569 nfetchfd = dup(fetchfd);
570 if (nfetchfd == -1) {
571 err = got_error_from_errno("dup");
572 goto done;
573 }
574 err = got_privsep_send_fetch_req(&fetchibuf, nfetchfd, &have_refs,
575 fetch_all_branches, wanted_branches, wanted_refs,
576 list_refs_only, verbosity);
577 if (err != NULL((void *)0))
578 goto done;
579 nfetchfd = -1;
580 npackfd = dup(packfd);
581 if (npackfd == -1) {
582 err = got_error_from_errno("dup");
583 goto done;
584 }
585 err = got_privsep_send_fetch_outfd(&fetchibuf, npackfd);
586 if (err != NULL((void *)0))
587 goto done;
588 npackfd = -1;
589
590 packfile_size = 0;
591 progress = calloc(GOT_FETCH_PKTMAX65536, 1);
592 if (progress == NULL((void *)0)) {
593 err = got_error_from_errno("calloc");
594 goto done;
595 }
596
597 *pack_hash = calloc(1, sizeof(**pack_hash));
598 if (*pack_hash == NULL((void *)0)) {
599 err = got_error_from_errno("calloc");
600 goto done;
601 }
602
603 while (!done) {
604 struct got_object_id *id = NULL((void *)0);
605 char *refname = NULL((void *)0);
606 char *server_progress = NULL((void *)0);
607 off_t packfile_size_cur = 0;
608
609 err = got_privsep_recv_fetch_progress(&done,
610 &id, &refname, symrefs, &server_progress,
611 &packfile_size_cur, (*pack_hash)->sha1, &fetchibuf);
612 if (err != NULL((void *)0))
613 goto done;
614 if (!done && refname && id) {
615 err = got_pathlist_insert(NULL((void *)0), refs, refname, id);
616 if (err)
617 goto done;
618 } else if (!done && server_progress) {
619 char *p;
620 /*
621 * XXX git-daemon tends to send batched output with
622 * lines spanning separate packets. Buffer progress
623 * output until we see a CR or LF to avoid giving
624 * partial lines of progress output to the callback.
625 */
626 if (strlcat(progress, server_progress,
627 GOT_FETCH_PKTMAX65536) >= GOT_FETCH_PKTMAX65536) {
628 progress[0] = '\0'; /* discard */
629 continue;
630 }
631 while ((p = strchr(progress, '\r')) != NULL((void *)0) ||
632 (p = strchr(progress, '\n')) != NULL((void *)0)) {
633 char *s;
634 size_t n;
635 char c = *p;
636 *p = '\0';
637 if (asprintf(&s, "%s%s", progress,
638 c == '\n' ? "\n" : "") == -1) {
639 err = got_error_from_errno("asprintf");
640 goto done;
641 }
642 err = progress_cb(progress_arg, s,
643 packfile_size_cur, 0, 0, 0, 0);
644 free(s);
645 if (err)
646 break;
647 n = strlen(progress);
648 if (n < GOT_FETCH_PKTMAX65536 - 1) {
649 memmove(progress, &progress[n + 1],
650 GOT_FETCH_PKTMAX65536 - n - 1);
651 } else
652 progress[0] = '\0';
653 }
654 free(server_progress);
655 if (err)
656 goto done;
657 } else if (!done && packfile_size_cur != packfile_size) {
658 err = progress_cb(progress_arg, NULL((void *)0),
659 packfile_size_cur, 0, 0, 0, 0);
660 if (err)
661 break;
662 packfile_size = packfile_size_cur;
663 }
664 }
665 if (waitpid(fetchpid, &fetchstatus, 0) == -1) {
666 err = got_error_from_errno("waitpid");
667 goto done;
668 }
669
670 if (lseek(packfd, 0, SEEK_SET0) == -1) {
671 err = got_error_from_errno("lseek");
672 goto done;
673 }
674
675 /* If zero data was fetched without error we are already up-to-date. */
676 if (packfile_size == 0) {
677 free(*pack_hash);
678 *pack_hash = NULL((void *)0);
679 goto done;
680 } else if (packfile_size < ssizeof(pack_hdr)((ssize_t)(sizeof(pack_hdr))) + SHA1_DIGEST_LENGTH20) {
681 err = got_error_msg(GOT_ERR_BAD_PACKFILE16, "short pack file");
682 goto done;
683 } else {
684 ssize_t n;
685
686 n = read(packfd, &pack_hdr, ssizeof(pack_hdr)((ssize_t)(sizeof(pack_hdr))));
687 if (n == -1) {
688 err = got_error_from_errno("read");
689 goto done;
690 }
691 if (n != ssizeof(pack_hdr)((ssize_t)(sizeof(pack_hdr)))) {
692 err = got_error(GOT_ERR_IO6);
693 goto done;
694 }
695 if (pack_hdr.signature != htobe32(GOT_PACKFILE_SIGNATURE)(__uint32_t)(__builtin_constant_p(0x5041434b) ? (__uint32_t)(
((__uint32_t)(0x5041434b) & 0xff) << 24 | ((__uint32_t
)(0x5041434b) & 0xff00) << 8 | ((__uint32_t)(0x5041434b
) & 0xff0000) >> 8 | ((__uint32_t)(0x5041434b) &
0xff000000) >> 24) : __swap32md(0x5041434b))) {
696 err = got_error_msg(GOT_ERR_BAD_PACKFILE16,
697 "bad pack file signature");
698 goto done;
699 }
700 if (pack_hdr.version != htobe32(GOT_PACKFILE_VERSION)(__uint32_t)(__builtin_constant_p(2) ? (__uint32_t)(((__uint32_t
)(2) & 0xff) << 24 | ((__uint32_t)(2) & 0xff00)
<< 8 | ((__uint32_t)(2) & 0xff0000) >> 8 | (
(__uint32_t)(2) & 0xff000000) >> 24) : __swap32md(2
))) {
701 err = got_error_msg(GOT_ERR_BAD_PACKFILE16,
702 "bad pack file version");
703 goto done;
704 }
705 nobj = be32toh(pack_hdr.nobjects)(__uint32_t)(__builtin_constant_p(pack_hdr.nobjects) ? (__uint32_t
)(((__uint32_t)(pack_hdr.nobjects) & 0xff) << 24 | (
(__uint32_t)(pack_hdr.nobjects) & 0xff00) << 8 | ((
__uint32_t)(pack_hdr.nobjects) & 0xff0000) >> 8 | (
(__uint32_t)(pack_hdr.nobjects) & 0xff000000) >> 24
) : __swap32md(pack_hdr.nobjects));
706 if (nobj == 0 &&
707 packfile_size > ssizeof(pack_hdr)((ssize_t)(sizeof(pack_hdr))) + SHA1_DIGEST_LENGTH20)
708 return got_error_msg(GOT_ERR_BAD_PACKFILE16,
709 "bad pack file with zero objects");
710 if (nobj != 0 &&
711 packfile_size <= ssizeof(pack_hdr)((ssize_t)(sizeof(pack_hdr))) + SHA1_DIGEST_LENGTH20)
712 return got_error_msg(GOT_ERR_BAD_PACKFILE16,
713 "empty pack file with non-zero object count");
714 }
715
716 /*
717 * If the pack file contains no objects, we may only need to update
718 * references in our repository. The caller will take care of that.
719 */
720 if (nobj == 0)
721 goto done;
722
723 if (lseek(packfd, 0, SEEK_SET0) == -1) {
724 err = got_error_from_errno("lseek");
725 goto done;
726 }
727
728 if (socketpair(AF_UNIX1, SOCK_STREAM1, PF_UNSPEC0, imsg_idxfds) == -1) {
729 err = got_error_from_errno("socketpair");
730 goto done;
731 }
732 idxpid = fork();
733 if (idxpid == -1) {
734 err= got_error_from_errno("fork");
735 goto done;
736 } else if (idxpid == 0)
737 got_privsep_exec_child(imsg_idxfds,
738 GOT_PATH_PROG_INDEX_PACK"/home/ben/bin" "/" "got-index-pack", tmppackpath);
739 if (close(imsg_idxfds[1]) == -1) {
740 err = got_error_from_errno("close");
741 goto done;
742 }
743 imsg_init(&idxibuf, imsg_idxfds[0]);
744
745 npackfd = dup(packfd);
746 if (npackfd == -1) {
747 err = got_error_from_errno("dup");
748 goto done;
749 }
750 err = got_privsep_send_index_pack_req(&idxibuf, (*pack_hash)->sha1,
751 npackfd);
752 if (err != NULL((void *)0))
753 goto done;
754 npackfd = -1;
755 err = got_privsep_send_index_pack_outfd(&idxibuf, nidxfd);
756 if (err != NULL((void *)0))
757 goto done;
758 nidxfd = -1;
Value stored to 'nidxfd' is never read
759 for (i = 0; i < nitems(tmpfds)(sizeof((tmpfds)) / sizeof((tmpfds)[0])); i++) {
760 err = got_privsep_send_tmpfd(&idxibuf, tmpfds[i]);
761 if (err != NULL((void *)0))
762 goto done;
763 tmpfds[i] = -1;
764 }
765 done = 0;
766 while (!done) {
767 int nobj_total, nobj_indexed, nobj_loose, nobj_resolved;
768
769 err = got_privsep_recv_index_progress(&done, &nobj_total,
770 &nobj_indexed, &nobj_loose, &nobj_resolved,
771 &idxibuf);
772 if (err != NULL((void *)0))
773 goto done;
774 if (nobj_indexed != 0) {
775 err = progress_cb(progress_arg, NULL((void *)0),
776 packfile_size, nobj_total,
777 nobj_indexed, nobj_loose, nobj_resolved);
778 if (err)
779 break;
780 }
781 imsg_clear(&idxibuf);
782 }
783 if (close(imsg_idxfds[0]) == -1) {
784 err = got_error_from_errno("close");
785 goto done;
786 }
787 if (waitpid(idxpid, &idxstatus, 0) == -1) {
788 err = got_error_from_errno("waitpid");
789 goto done;
790 }
791
792 err = got_object_id_str(&id_str, *pack_hash);
793 if (err)
794 goto done;
795 if (asprintf(&packpath, "%s/%s/pack-%s.pack",
796 repo_path, GOT_OBJECTS_PACK_DIR"objects/pack", id_str) == -1) {
797 err = got_error_from_errno("asprintf");
798 goto done;
799 }
800
801 if (asprintf(&idxpath, "%s/%s/pack-%s.idx",
802 repo_path, GOT_OBJECTS_PACK_DIR"objects/pack", id_str) == -1) {
803 err = got_error_from_errno("asprintf");
804 goto done;
805 }
806
807 if (rename(tmppackpath, packpath) == -1) {
808 err = got_error_from_errno3("rename", tmppackpath, packpath);
809 goto done;
810 }
811 free(tmppackpath);
812 tmppackpath = NULL((void *)0);
813 if (rename(tmpidxpath, idxpath) == -1) {
814 err = got_error_from_errno3("rename", tmpidxpath, idxpath);
815 goto done;
816 }
817 free(tmpidxpath);
818 tmpidxpath = NULL((void *)0);
819
820done:
821 if (tmppackpath && unlink(tmppackpath) == -1 && err == NULL((void *)0))
822 err = got_error_from_errno2("unlink", tmppackpath);
823 if (tmpidxpath && unlink(tmpidxpath) == -1 && err == NULL((void *)0))
824 err = got_error_from_errno2("unlink", tmpidxpath);
825 if (nfetchfd != -1 && close(nfetchfd) == -1 && err == NULL((void *)0))
826 err = got_error_from_errno("close");
827 if (npackfd != -1 && close(npackfd) == -1 && err == NULL((void *)0))
828 err = got_error_from_errno("close");
829 if (packfd != -1 && close(packfd) == -1 && err == NULL((void *)0))
830 err = got_error_from_errno("close");
831 if (idxfd != -1 && close(idxfd) == -1 && err == NULL((void *)0))
832 err = got_error_from_errno("close");
833 for (i = 0; i < nitems(tmpfds)(sizeof((tmpfds)) / sizeof((tmpfds)[0])); i++) {
834 if (tmpfds[i] != -1 && close(tmpfds[i]) == -1 && err == NULL((void *)0))
835 err = got_error_from_errno("close");
836 }
837 free(tmppackpath);
838 free(tmpidxpath);
839 free(idxpath);
840 free(packpath);
841 free(ref_prefix);
842 free(progress);
843
844 TAILQ_FOREACH(pe, &have_refs, entry)for((pe) = ((&have_refs)->tqh_first); (pe) != ((void *
)0); (pe) = ((pe)->entry.tqe_next)) {
845 free((char *)pe->path);
846 free(pe->data);
847 }
848 got_pathlist_free(&have_refs);
849 got_ref_list_free(&my_refs);
850 if (err) {
851 free(*pack_hash);
852 *pack_hash = NULL((void *)0);
853 TAILQ_FOREACH(pe, refs, entry)for((pe) = ((refs)->tqh_first); (pe) != ((void *)0); (pe) =
((pe)->entry.tqe_next)) {
854 free((void *)pe->path);
855 free(pe->data);
856 }
857 got_pathlist_free(refs);
858 TAILQ_FOREACH(pe, symrefs, entry)for((pe) = ((symrefs)->tqh_first); (pe) != ((void *)0); (pe
) = ((pe)->entry.tqe_next)) {
859 free((void *)pe->path);
860 free(pe->data);
861 }
862 got_pathlist_free(symrefs);
863 }
864 return err;
865}