2 28714985 2018-11-17 stsp * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
4 28714985 2018-11-17 stsp * Permission to use, copy, modify, and distribute this software for any
5 28714985 2018-11-17 stsp * purpose with or without fee is hereby granted, provided that the above
6 28714985 2018-11-17 stsp * copyright notice and this permission notice appear in all copies.
8 28714985 2018-11-17 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 28714985 2018-11-17 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 28714985 2018-11-17 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 28714985 2018-11-17 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 28714985 2018-11-17 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 28714985 2018-11-17 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 28714985 2018-11-17 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 28714985 2018-11-17 stsp #include <sys/types.h>
18 28714985 2018-11-17 stsp #include <sys/queue.h>
19 28714985 2018-11-17 stsp #include <sys/uio.h>
20 28714985 2018-11-17 stsp #include <sys/time.h>
22 28714985 2018-11-17 stsp #include <stdint.h>
23 28714985 2018-11-17 stsp #include <imsg.h>
24 12ce7a6c 2019-08-12 stsp #include <limits.h>
25 28714985 2018-11-17 stsp #include <signal.h>
26 28714985 2018-11-17 stsp #include <stdio.h>
27 28714985 2018-11-17 stsp #include <stdlib.h>
28 28714985 2018-11-17 stsp #include <string.h>
29 28714985 2018-11-17 stsp #include <sha1.h>
30 5822e79e 2023-02-23 op #include <sha2.h>
31 81a12da5 2020-09-09 naddy #include <unistd.h>
32 28714985 2018-11-17 stsp #include <zlib.h>
34 28714985 2018-11-17 stsp #include "got_error.h"
35 28714985 2018-11-17 stsp #include "got_object.h"
37 28714985 2018-11-17 stsp #include "got_lib_delta.h"
38 28714985 2018-11-17 stsp #include "got_lib_inflate.h"
39 28714985 2018-11-17 stsp #include "got_lib_object.h"
40 28714985 2018-11-17 stsp #include "got_lib_object_parse.h"
41 28714985 2018-11-17 stsp #include "got_lib_privsep.h"
42 53bf0b54 2023-02-23 op #include "got_lib_hash.h"
44 28714985 2018-11-17 stsp static volatile sig_atomic_t sigint_received;
47 28714985 2018-11-17 stsp catch_sigint(int signo)
49 28714985 2018-11-17 stsp sigint_received = 1;
53 28714985 2018-11-17 stsp main(int argc, char *argv[])
55 28714985 2018-11-17 stsp const struct got_error *err = NULL;
56 28714985 2018-11-17 stsp struct imsgbuf ibuf;
57 d5c81d44 2021-07-08 stsp size_t datalen;
59 28714985 2018-11-17 stsp signal(SIGINT, catch_sigint);
61 28714985 2018-11-17 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
63 28714985 2018-11-17 stsp #ifndef PROFILE
64 28714985 2018-11-17 stsp /* revoke access to most system calls */
65 28714985 2018-11-17 stsp if (pledge("stdio recvfd", NULL) == -1) {
66 638f9024 2019-05-13 stsp err = got_error_from_errno("pledge");
67 28714985 2018-11-17 stsp got_privsep_send_error(&ibuf, err);
73 28714985 2018-11-17 stsp struct imsg imsg;
74 268f7291 2018-12-24 stsp struct got_tag_object *tag = NULL;
75 d5c81d44 2021-07-08 stsp struct got_object_id expected_id;
77 28714985 2018-11-17 stsp if (sigint_received) {
78 28714985 2018-11-17 stsp err = got_error(GOT_ERR_CANCELLED);
82 28714985 2018-11-17 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
84 28714985 2018-11-17 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
89 28714985 2018-11-17 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
92 28714985 2018-11-17 stsp if (imsg.hdr.type != GOT_IMSG_TAG_REQUEST) {
93 28714985 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
97 d5c81d44 2021-07-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
98 d5c81d44 2021-07-08 stsp if (datalen != sizeof(expected_id)) {
99 d5c81d44 2021-07-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
102 d5c81d44 2021-07-08 stsp memcpy(&expected_id, imsg.data, sizeof(expected_id));
104 28714985 2018-11-17 stsp if (imsg.fd == -1) {
105 28714985 2018-11-17 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
109 28714985 2018-11-17 stsp /* Always assume file offset zero. */
110 13b2bc37 2022-10-23 stsp err = got_object_read_tag(&tag, imsg.fd, &expected_id, 0);
114 28714985 2018-11-17 stsp err = got_privsep_send_tag(&ibuf, tag);
116 13b2bc37 2022-10-23 stsp if (imsg.fd != -1 && close(imsg.fd) == -1 && err == NULL)
117 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
118 28714985 2018-11-17 stsp imsg_free(&imsg);
123 28714985 2018-11-17 stsp imsg_clear(&ibuf);
125 28714985 2018-11-17 stsp if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
126 28714985 2018-11-17 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
127 28714985 2018-11-17 stsp got_privsep_send_error(&ibuf, err);
130 08578a35 2021-01-22 stsp if (close(GOT_IMSG_FD_CHILD) == -1 && err == NULL)
131 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
132 28714985 2018-11-17 stsp return err ? 1 : 0;