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"
41 d5c81d44 2021-07-08 stsp #include "got_lib_sha1.h"
43 99437157 2018-11-11 stsp static volatile sig_atomic_t sigint_received;
46 99437157 2018-11-11 stsp catch_sigint(int signo)
48 99437157 2018-11-11 stsp sigint_received = 1;
52 ad242220 2018-09-08 stsp main(int argc, char *argv[])
54 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
55 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
56 ad242220 2018-09-08 stsp size_t datalen;
58 99437157 2018-11-11 stsp signal(SIGINT, catch_sigint);
60 ad242220 2018-09-08 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
62 2ff12563 2018-09-15 stsp #ifndef PROFILE
63 ad242220 2018-09-08 stsp /* revoke access to most system calls */
64 ad242220 2018-09-08 stsp if (pledge("stdio recvfd", NULL) == -1) {
65 638f9024 2019-05-13 stsp err = got_error_from_errno("pledge");
66 ad242220 2018-09-08 stsp got_privsep_send_error(&ibuf, err);
72 ad242220 2018-09-08 stsp struct imsg imsg, imsg_outfd;
73 ad242220 2018-09-08 stsp FILE *f = NULL;
74 ad242220 2018-09-08 stsp size_t size;
75 ebc55e2d 2018-12-24 stsp struct got_object *obj = NULL;
76 ac544f8c 2019-01-13 stsp uint8_t *buf = NULL;
77 d5c81d44 2021-07-08 stsp struct got_object_id id;
78 d5c81d44 2021-07-08 stsp struct got_object_id expected_id;
79 d5c81d44 2021-07-08 stsp struct got_inflate_checksum csum;
80 d5c81d44 2021-07-08 stsp SHA1_CTX sha1_ctx;
82 d5c81d44 2021-07-08 stsp SHA1Init(&sha1_ctx);
83 d5c81d44 2021-07-08 stsp memset(&csum, 0, sizeof(csum));
84 d5c81d44 2021-07-08 stsp csum.output_sha1 = &sha1_ctx;
86 55da3778 2018-09-10 stsp memset(&imsg, 0, sizeof(imsg));
87 ad242220 2018-09-08 stsp imsg.fd = -1;
88 55da3778 2018-09-10 stsp memset(&imsg_outfd, 0, sizeof(imsg_outfd));
89 ad242220 2018-09-08 stsp imsg_outfd.fd = -1;
91 99437157 2018-11-11 stsp if (sigint_received) {
92 99437157 2018-11-11 stsp err = got_error(GOT_ERR_CANCELLED);
96 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
98 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
103 ad242220 2018-09-08 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
106 ad242220 2018-09-08 stsp if (imsg.hdr.type != GOT_IMSG_BLOB_REQUEST) {
107 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
111 d5c81d44 2021-07-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
112 d5c81d44 2021-07-08 stsp if (datalen != sizeof(expected_id)) {
113 d5c81d44 2021-07-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
116 d5c81d44 2021-07-08 stsp memcpy(&expected_id, imsg.data, sizeof(expected_id));
118 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
119 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
123 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg_outfd, &ibuf, 0);
125 ad242220 2018-09-08 stsp if (imsg.hdr.len == 0)
126 ad242220 2018-09-08 stsp err = NULL;
130 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type == GOT_IMSG_STOP)
133 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type != GOT_IMSG_BLOB_OUTFD) {
134 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
138 ad242220 2018-09-08 stsp datalen = imsg_outfd.hdr.len - IMSG_HEADER_SIZE;
139 ad242220 2018-09-08 stsp if (datalen != 0) {
140 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
143 ad242220 2018-09-08 stsp if (imsg_outfd.fd == -1) {
144 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
148 ebc55e2d 2018-12-24 stsp err = got_object_read_header(&obj, imsg.fd);
152 ebc55e2d 2018-12-24 stsp if (lseek(imsg.fd, SEEK_SET, 0) == -1) {
153 638f9024 2019-05-13 stsp err = got_error_from_errno("lseek");
157 ad242220 2018-09-08 stsp f = fdopen(imsg.fd, "rb");
158 ad242220 2018-09-08 stsp if (f == NULL) {
159 638f9024 2019-05-13 stsp err = got_error_from_errno("fdopen");
163 cc626439 2019-07-15 stsp if (obj->size + obj->hdrlen <=
164 cc626439 2019-07-15 stsp GOT_PRIVSEP_INLINE_BLOB_DATA_MAX) {
165 d5c81d44 2021-07-08 stsp err = got_inflate_to_mem(&buf, &size, NULL, &csum, f);
169 d5c81d44 2021-07-08 stsp err = got_inflate_to_fd(&size, f, &csum, imsg_outfd.fd);
173 d5c81d44 2021-07-08 stsp SHA1Final(id.sha1, &sha1_ctx);
174 d5c81d44 2021-07-08 stsp if (memcmp(expected_id.sha1, id.sha1, SHA1_DIGEST_LENGTH) != 0) {
175 d5c81d44 2021-07-08 stsp char buf[SHA1_DIGEST_STRING_LENGTH];
176 d5c81d44 2021-07-08 stsp err = got_error_fmt(GOT_ERR_OBJ_CSUM,
177 d5c81d44 2021-07-08 stsp "checksum failure for object %s",
178 d5c81d44 2021-07-08 stsp got_sha1_digest_to_str(expected_id.sha1, buf,
179 d5c81d44 2021-07-08 stsp sizeof(buf)));
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;
