2 5d56da81 2019-01-13 stsp * Copyright (c) 2018, 2019 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 e83f12a6 2023-02-12 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"
37 ad242220 2018-09-08 stsp #include "got_lib_delta.h"
38 b74bd7ab 2023-02-12 op #include "got_lib_hash.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"
44 99437157 2018-11-11 stsp static volatile sig_atomic_t sigint_received;
47 99437157 2018-11-11 stsp catch_sigint(int signo)
49 99437157 2018-11-11 stsp sigint_received = 1;
53 ad242220 2018-09-08 stsp main(int argc, char *argv[])
55 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
56 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
57 ad242220 2018-09-08 stsp size_t datalen;
59 99437157 2018-11-11 stsp signal(SIGINT, catch_sigint);
61 ad242220 2018-09-08 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
63 2ff12563 2018-09-15 stsp #ifndef PROFILE
64 ad242220 2018-09-08 stsp /* revoke access to most system calls */
65 ad242220 2018-09-08 stsp if (pledge("stdio recvfd", NULL) == -1) {
66 638f9024 2019-05-13 stsp err = got_error_from_errno("pledge");
67 ad242220 2018-09-08 stsp got_privsep_send_error(&ibuf, err);
73 ad242220 2018-09-08 stsp struct imsg imsg, imsg_outfd;
74 ad242220 2018-09-08 stsp FILE *f = NULL;
75 ad242220 2018-09-08 stsp size_t size;
76 ebc55e2d 2018-12-24 stsp struct got_object *obj = NULL;
77 ac544f8c 2019-01-13 stsp uint8_t *buf = NULL;
78 d5c81d44 2021-07-08 stsp struct got_object_id id;
79 d5c81d44 2021-07-08 stsp struct got_object_id expected_id;
80 d5c81d44 2021-07-08 stsp struct got_inflate_checksum csum;
81 b74bd7ab 2023-02-12 op struct got_hash ctx;
83 55da3778 2018-09-10 stsp memset(&imsg, 0, sizeof(imsg));
84 ad242220 2018-09-08 stsp imsg.fd = -1;
85 55da3778 2018-09-10 stsp memset(&imsg_outfd, 0, sizeof(imsg_outfd));
86 ad242220 2018-09-08 stsp imsg_outfd.fd = -1;
88 99437157 2018-11-11 stsp if (sigint_received) {
89 99437157 2018-11-11 stsp err = got_error(GOT_ERR_CANCELLED);
93 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
95 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
100 ad242220 2018-09-08 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
103 ad242220 2018-09-08 stsp if (imsg.hdr.type != GOT_IMSG_BLOB_REQUEST) {
104 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
108 d5c81d44 2021-07-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
109 d5c81d44 2021-07-08 stsp if (datalen != sizeof(expected_id)) {
110 d5c81d44 2021-07-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
113 d5c81d44 2021-07-08 stsp memcpy(&expected_id, imsg.data, sizeof(expected_id));
115 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
116 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
120 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg_outfd, &ibuf, 0);
122 ad242220 2018-09-08 stsp if (imsg.hdr.len == 0)
123 ad242220 2018-09-08 stsp err = NULL;
127 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type == GOT_IMSG_STOP)
130 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type != GOT_IMSG_BLOB_OUTFD) {
131 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
135 ad242220 2018-09-08 stsp datalen = imsg_outfd.hdr.len - IMSG_HEADER_SIZE;
136 ad242220 2018-09-08 stsp if (datalen != 0) {
137 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
140 ad242220 2018-09-08 stsp if (imsg_outfd.fd == -1) {
141 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
145 ebc55e2d 2018-12-24 stsp err = got_object_read_header(&obj, imsg.fd);
149 ebc55e2d 2018-12-24 stsp if (lseek(imsg.fd, SEEK_SET, 0) == -1) {
150 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
154 ad242220 2018-09-08 stsp f = fdopen(imsg.fd, "rb");
155 ad242220 2018-09-08 stsp if (f == NULL) {
156 638f9024 2019-05-13 stsp err = got_error_from_errno("fdopen");
160 2d9874c2 2023-02-12 op memset(&id, 0, sizeof(id));
161 2d9874c2 2023-02-12 op id.algo = expected_id.algo;
163 2d9874c2 2023-02-12 op got_hash_init(&ctx, expected_id.algo);
164 2d9874c2 2023-02-12 op memset(&csum, 0, sizeof(csum));
165 2d9874c2 2023-02-12 op csum.output_ctx = &ctx;
167 cc626439 2019-07-15 stsp if (obj->size + obj->hdrlen <=
168 cc626439 2019-07-15 stsp GOT_PRIVSEP_INLINE_BLOB_DATA_MAX) {
169 d5c81d44 2021-07-08 stsp err = got_inflate_to_mem(&buf, &size, NULL, &csum, f);
173 d5c81d44 2021-07-08 stsp err = got_inflate_to_fd(&size, f, &csum, imsg_outfd.fd);
177 a41a7d4a 2023-02-12 op got_hash_final(&ctx, id.hash);
178 a755a22c 2023-02-02 op if (got_object_id_cmp(&expected_id, &id) != 0) {
179 3c23f6cd 2023-02-04 op err = got_error_checksum(&expected_id);
183 f392e333 2018-12-24 stsp if (size < obj->hdrlen) {
184 f392e333 2018-12-24 stsp err = got_error(GOT_ERR_BAD_OBJ_HDR);
188 ac544f8c 2019-01-13 stsp err = got_privsep_send_blob(&ibuf, size, obj->hdrlen, buf);
192 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL)
193 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
194 3a6ce05a 2019-02-11 stsp } else if (imsg.fd != -1) {
195 08578a35 2021-01-22 stsp if (close(imsg.fd) == -1 && err == NULL)
196 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
198 3a6ce05a 2019-02-11 stsp if (imsg_outfd.fd != -1) {
199 08578a35 2021-01-22 stsp if (close(imsg_outfd.fd) == -1 && err == NULL)
200 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
203 ad242220 2018-09-08 stsp imsg_free(&imsg);
204 ad242220 2018-09-08 stsp imsg_free(&imsg_outfd);
206 ebc55e2d 2018-12-24 stsp got_object_close(obj);
211 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
213 80d5f134 2018-11-11 stsp if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
214 80d5f134 2018-11-11 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
215 99437157 2018-11-11 stsp got_privsep_send_error(&ibuf, err);
218 08578a35 2021-01-22 stsp if (close(GOT_IMSG_FD_CHILD) == -1 && err == NULL)
219 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
220 ad242220 2018-09-08 stsp return err ? 1 : 0;
