2 5aa81393 2020-01-06 stsp * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4 ad242220 2018-09-08 stsp * Permission to use, copy, modify, and distribute this software for any
5 ad242220 2018-09-08 stsp * purpose with or without fee is hereby granted, provided that the above
6 ad242220 2018-09-08 stsp * copyright notice and this permission notice appear in all copies.
8 ad242220 2018-09-08 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 ad242220 2018-09-08 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 ad242220 2018-09-08 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 ad242220 2018-09-08 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 ad242220 2018-09-08 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 ad242220 2018-09-08 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 ad242220 2018-09-08 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 ad242220 2018-09-08 stsp #include <sys/types.h>
18 ad242220 2018-09-08 stsp #include <sys/queue.h>
19 ad242220 2018-09-08 stsp #include <sys/uio.h>
20 ad242220 2018-09-08 stsp #include <sys/time.h>
21 876c234b 2018-09-10 stsp #include <sys/syslimits.h>
23 ad242220 2018-09-08 stsp #include <stdint.h>
24 ad242220 2018-09-08 stsp #include <imsg.h>
25 12ce7a6c 2019-08-12 stsp #include <limits.h>
26 99437157 2018-11-11 stsp #include <signal.h>
27 ad242220 2018-09-08 stsp #include <stdio.h>
28 ad242220 2018-09-08 stsp #include <stdlib.h>
29 ad242220 2018-09-08 stsp #include <string.h>
30 ad242220 2018-09-08 stsp #include <sha1.h>
31 ad242220 2018-09-08 stsp #include <zlib.h>
33 ad242220 2018-09-08 stsp #include "got_error.h"
34 ad242220 2018-09-08 stsp #include "got_object.h"
36 ad242220 2018-09-08 stsp #include "got_lib_delta.h"
37 ad242220 2018-09-08 stsp #include "got_lib_inflate.h"
38 ad242220 2018-09-08 stsp #include "got_lib_object.h"
39 ad242220 2018-09-08 stsp #include "got_lib_object_parse.h"
40 ad242220 2018-09-08 stsp #include "got_lib_privsep.h"
42 99437157 2018-11-11 stsp static volatile sig_atomic_t sigint_received;
45 99437157 2018-11-11 stsp catch_sigint(int signo)
47 99437157 2018-11-11 stsp sigint_received = 1;
50 ad242220 2018-09-08 stsp static const struct got_error *
51 1785f84a 2018-12-23 stsp read_commit_object(struct got_commit_object **commit, FILE *f)
53 1785f84a 2018-12-23 stsp struct got_object *obj;
54 41fa1437 2018-11-05 stsp const struct got_error *err = NULL;
58 1785f84a 2018-12-23 stsp err = got_inflate_to_mem(&p, &len, f);
62 1785f84a 2018-12-23 stsp err = got_object_parse_header(&obj, p, len);
68 41fa1437 2018-11-05 stsp if (len < obj->hdrlen + obj->size) {
69 41fa1437 2018-11-05 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
73 1785f84a 2018-12-23 stsp if (obj->type != GOT_OBJ_TYPE_COMMIT) {
74 1785f84a 2018-12-23 stsp err = got_error(GOT_ERR_OBJ_TYPE);
78 ad242220 2018-09-08 stsp /* Skip object header. */
79 41fa1437 2018-11-05 stsp len -= obj->hdrlen;
80 ad242220 2018-09-08 stsp err = got_object_parse_commit(commit, p + obj->hdrlen, len);
83 6e72e6a3 2018-12-23 stsp got_object_close(obj);
88 ad242220 2018-09-08 stsp main(int argc, char *argv[])
90 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
91 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
93 99437157 2018-11-11 stsp signal(SIGINT, catch_sigint);
95 ad242220 2018-09-08 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
97 2ff12563 2018-09-15 stsp #ifndef PROFILE
98 ad242220 2018-09-08 stsp /* revoke access to most system calls */
99 ad242220 2018-09-08 stsp if (pledge("stdio recvfd", NULL) == -1) {
100 638f9024 2019-05-13 stsp err = got_error_from_errno("pledge");
101 ad242220 2018-09-08 stsp got_privsep_send_error(&ibuf, err);
107 ad242220 2018-09-08 stsp struct imsg imsg;
108 ad242220 2018-09-08 stsp FILE *f = NULL;
109 1785f84a 2018-12-23 stsp struct got_commit_object *commit = NULL;
111 99437157 2018-11-11 stsp if (sigint_received) {
112 99437157 2018-11-11 stsp err = got_error(GOT_ERR_CANCELLED);
116 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
118 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
119 ad242220 2018-09-08 stsp err = NULL;
123 ad242220 2018-09-08 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
126 41fa1437 2018-11-05 stsp if (imsg.hdr.type != GOT_IMSG_COMMIT_REQUEST) {
127 41fa1437 2018-11-05 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
131 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
132 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
136 ad242220 2018-09-08 stsp /* Always assume file offset zero. */
137 ad242220 2018-09-08 stsp f = fdopen(imsg.fd, "rb");
138 ad242220 2018-09-08 stsp if (f == NULL) {
139 638f9024 2019-05-13 stsp err = got_error_from_errno("fdopen");
143 1785f84a 2018-12-23 stsp err = read_commit_object(&commit, f);
147 41fa1437 2018-11-05 stsp err = got_privsep_send_commit(&ibuf, commit);
148 fe558a04 2020-01-06 stsp got_object_commit_close(commit);
151 fb43ecf1 2019-02-11 stsp if (fclose(f) != 0 && err == NULL)
152 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
153 3a6ce05a 2019-02-11 stsp } else if (imsg.fd != -1) {
154 3a6ce05a 2019-02-11 stsp if (close(imsg.fd) != 0 && err == NULL)
155 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
157 ad242220 2018-09-08 stsp imsg_free(&imsg);
162 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
164 80d5f134 2018-11-11 stsp if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
165 80d5f134 2018-11-11 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
166 99437157 2018-11-11 stsp got_privsep_send_error(&ibuf, err);
169 3a6ce05a 2019-02-11 stsp if (close(GOT_IMSG_FD_CHILD) != 0 && err == NULL)
170 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
171 ad242220 2018-09-08 stsp return err ? 1 : 0;
