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 81a12da5 2020-09-09 naddy #include <unistd.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;
51 ad242220 2018-09-08 stsp main(int argc, char *argv[])
53 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
54 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
55 ad242220 2018-09-08 stsp size_t datalen;
57 99437157 2018-11-11 stsp signal(SIGINT, catch_sigint);
59 ad242220 2018-09-08 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
61 2ff12563 2018-09-15 stsp #ifndef PROFILE
62 ad242220 2018-09-08 stsp /* revoke access to most system calls */
63 ad242220 2018-09-08 stsp if (pledge("stdio recvfd", NULL) == -1) {
64 638f9024 2019-05-13 stsp err = got_error_from_errno("pledge");
65 ad242220 2018-09-08 stsp got_privsep_send_error(&ibuf, err);
71 ad242220 2018-09-08 stsp struct imsg imsg, imsg_outfd;
72 ad242220 2018-09-08 stsp FILE *f = NULL;
73 ad242220 2018-09-08 stsp size_t size;
74 ebc55e2d 2018-12-24 stsp struct got_object *obj = NULL;
75 ac544f8c 2019-01-13 stsp uint8_t *buf = NULL;
76 d5c81d44 2021-07-08 stsp struct got_object_id id;
77 d5c81d44 2021-07-08 stsp struct got_object_id expected_id;
78 d5c81d44 2021-07-08 stsp struct got_inflate_checksum csum;
79 d5c81d44 2021-07-08 stsp SHA1_CTX sha1_ctx;
81 d5c81d44 2021-07-08 stsp SHA1Init(&sha1_ctx);
82 d5c81d44 2021-07-08 stsp memset(&csum, 0, sizeof(csum));
83 d5c81d44 2021-07-08 stsp csum.output_sha1 = &sha1_ctx;
85 55da3778 2018-09-10 stsp memset(&imsg, 0, sizeof(imsg));
86 ad242220 2018-09-08 stsp imsg.fd = -1;
87 55da3778 2018-09-10 stsp memset(&imsg_outfd, 0, sizeof(imsg_outfd));
88 ad242220 2018-09-08 stsp imsg_outfd.fd = -1;
90 99437157 2018-11-11 stsp if (sigint_received) {
91 99437157 2018-11-11 stsp err = got_error(GOT_ERR_CANCELLED);
95 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
97 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
102 ad242220 2018-09-08 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
105 ad242220 2018-09-08 stsp if (imsg.hdr.type != GOT_IMSG_BLOB_REQUEST) {
106 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
110 d5c81d44 2021-07-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
111 d5c81d44 2021-07-08 stsp if (datalen != sizeof(expected_id)) {
112 d5c81d44 2021-07-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
115 d5c81d44 2021-07-08 stsp memcpy(&expected_id, imsg.data, sizeof(expected_id));
117 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
118 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
122 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg_outfd, &ibuf, 0);
124 ad242220 2018-09-08 stsp if (imsg.hdr.len == 0)
125 ad242220 2018-09-08 stsp err = NULL;
129 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type == GOT_IMSG_STOP)
132 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type != GOT_IMSG_BLOB_OUTFD) {
133 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
137 ad242220 2018-09-08 stsp datalen = imsg_outfd.hdr.len - IMSG_HEADER_SIZE;
138 ad242220 2018-09-08 stsp if (datalen != 0) {
139 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
142 ad242220 2018-09-08 stsp if (imsg_outfd.fd == -1) {
143 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
147 ebc55e2d 2018-12-24 stsp err = got_object_read_header(&obj, imsg.fd);
151 ebc55e2d 2018-12-24 stsp if (lseek(imsg.fd, SEEK_SET, 0) == -1) {
152 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
156 ad242220 2018-09-08 stsp f = fdopen(imsg.fd, "rb");
157 ad242220 2018-09-08 stsp if (f == NULL) {
158 638f9024 2019-05-13 stsp err = got_error_from_errno("fdopen");
162 cc626439 2019-07-15 stsp if (obj->size + obj->hdrlen <=
163 cc626439 2019-07-15 stsp GOT_PRIVSEP_INLINE_BLOB_DATA_MAX) {
164 d5c81d44 2021-07-08 stsp err = got_inflate_to_mem(&buf, &size, NULL, &csum, f);
168 d5c81d44 2021-07-08 stsp err = got_inflate_to_fd(&size, f, &csum, imsg_outfd.fd);
172 d5c81d44 2021-07-08 stsp SHA1Final(id.sha1, &sha1_ctx);
173 a755a22c 2023-02-02 op if (got_object_id_cmp(&expected_id, &id) != 0) {
174 3c23f6cd 2023-02-04 op err = got_error_checksum(&expected_id);
178 f392e333 2018-12-24 stsp if (size < obj->hdrlen) {
179 f392e333 2018-12-24 stsp err = got_error(GOT_ERR_BAD_OBJ_HDR);
183 ac544f8c 2019-01-13 stsp err = got_privsep_send_blob(&ibuf, size, obj->hdrlen, buf);
187 56b63ca4 2021-01-22 stsp if (fclose(f) == EOF && err == NULL)
188 638f9024 2019-05-13 stsp err = got_error_from_errno("fclose");
189 3a6ce05a 2019-02-11 stsp } else if (imsg.fd != -1) {
190 08578a35 2021-01-22 stsp if (close(imsg.fd) == -1 && err == NULL)
191 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
193 3a6ce05a 2019-02-11 stsp if (imsg_outfd.fd != -1) {
194 08578a35 2021-01-22 stsp if (close(imsg_outfd.fd) == -1 && err == NULL)
195 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
198 ad242220 2018-09-08 stsp imsg_free(&imsg);
199 ad242220 2018-09-08 stsp imsg_free(&imsg_outfd);
201 ebc55e2d 2018-12-24 stsp got_object_close(obj);
206 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
208 80d5f134 2018-11-11 stsp if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
209 80d5f134 2018-11-11 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
210 99437157 2018-11-11 stsp got_privsep_send_error(&ibuf, err);
213 08578a35 2021-01-22 stsp if (close(GOT_IMSG_FD_CHILD) == -1 && err == NULL)
214 638f9024 2019-05-13 stsp err = got_error_from_errno("close");
215 ad242220 2018-09-08 stsp return err ? 1 : 0;
