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>
22 ad242220 2018-09-08 stsp #include <stdint.h>
23 ad242220 2018-09-08 stsp #include <imsg.h>
24 12ce7a6c 2019-08-12 stsp #include <limits.h>
25 99437157 2018-11-11 stsp #include <signal.h>
26 ad242220 2018-09-08 stsp #include <stdio.h>
27 ad242220 2018-09-08 stsp #include <stdlib.h>
28 ad242220 2018-09-08 stsp #include <string.h>
29 ad242220 2018-09-08 stsp #include <sha1.h>
30 5822e79e 2023-02-23 op #include <sha2.h>
31 81a12da5 2020-09-09 naddy #include <unistd.h>
32 ad242220 2018-09-08 stsp #include <zlib.h>
34 ad242220 2018-09-08 stsp #include "got_error.h"
35 ad242220 2018-09-08 stsp #include "got_object.h"
36 3022d272 2019-11-14 stsp #include "got_path.h"
38 ad242220 2018-09-08 stsp #include "got_lib_delta.h"
39 ad242220 2018-09-08 stsp #include "got_lib_inflate.h"
40 ad242220 2018-09-08 stsp #include "got_lib_object.h"
41 ad242220 2018-09-08 stsp #include "got_lib_object_parse.h"
42 ad242220 2018-09-08 stsp #include "got_lib_privsep.h"
43 53bf0b54 2023-02-23 op #include "got_lib_hash.h"
45 99437157 2018-11-11 stsp static volatile sig_atomic_t sigint_received;
48 99437157 2018-11-11 stsp catch_sigint(int signo)
50 99437157 2018-11-11 stsp sigint_received = 1;
54 ad242220 2018-09-08 stsp main(int argc, char *argv[])
56 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
57 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
58 d5c81d44 2021-07-08 stsp size_t datalen;
59 d294b1dc 2022-10-18 stsp struct got_parsed_tree_entry *entries = NULL;
60 d294b1dc 2022-10-18 stsp size_t nentries = 0, nentries_alloc = 0;
62 99437157 2018-11-11 stsp signal(SIGINT, catch_sigint);
64 ad242220 2018-09-08 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
66 2ff12563 2018-09-15 stsp #ifndef PROFILE
67 ad242220 2018-09-08 stsp /* revoke access to most system calls */
68 ad242220 2018-09-08 stsp if (pledge("stdio recvfd", NULL) == -1) {
69 638f9024 2019-05-13 stsp err = got_error_from_errno("pledge");
70 ad242220 2018-09-08 stsp got_privsep_send_error(&ibuf, err);
76 ad242220 2018-09-08 stsp struct imsg imsg;
77 3022d272 2019-11-14 stsp uint8_t *buf = NULL;
78 d5c81d44 2021-07-08 stsp struct got_object_id expected_id;
80 99437157 2018-11-11 stsp if (sigint_received) {
81 99437157 2018-11-11 stsp err = got_error(GOT_ERR_CANCELLED);
85 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
87 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
92 ad242220 2018-09-08 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
95 ad242220 2018-09-08 stsp if (imsg.hdr.type != GOT_IMSG_TREE_REQUEST) {
96 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
100 d5c81d44 2021-07-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
101 d5c81d44 2021-07-08 stsp if (datalen != sizeof(expected_id)) {
102 d5c81d44 2021-07-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
105 d5c81d44 2021-07-08 stsp memcpy(&expected_id, imsg.data, sizeof(expected_id));
107 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
108 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
112 ad242220 2018-09-08 stsp /* Always assume file offset zero. */
113 13b2bc37 2022-10-23 stsp err = got_object_read_tree(&entries, &nentries, &nentries_alloc,
114 13b2bc37 2022-10-23 stsp &buf, imsg.fd, &expected_id);
118 9985f404 2022-05-19 stsp err = got_privsep_send_tree(&ibuf, entries, nentries);
121 13b2bc37 2022-10-23 stsp if (imsg.fd != -1 && close(imsg.fd) == -1 && err == NULL)
122 13b2bc37 2022-10-23 stsp err = got_error_from_errno("close");
123 ad242220 2018-09-08 stsp imsg_free(&imsg);
128 d294b1dc 2022-10-18 stsp free(entries);
129 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
131 80d5f134 2018-11-11 stsp if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
132 80d5f134 2018-11-11 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
133 99437157 2018-11-11 stsp got_privsep_send_error(&ibuf, err);
136 08578a35 2021-01-22 stsp if (close(GOT_IMSG_FD_CHILD) == -1 && err == NULL)
137 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
138 ad242220 2018-09-08 stsp return err ? 1 : 0;
