2 ad242220 2018-09-08 stsp * Copyright (c) 2018 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>
21 ad242220 2018-09-08 stsp #include <sys/limits.h>
22 876c234b 2018-09-10 stsp #include <sys/syslimits.h>
24 ad242220 2018-09-08 stsp #include <stdint.h>
25 ad242220 2018-09-08 stsp #include <imsg.h>
26 99437157 2018-11-11 stsp #include <signal.h>
27 ad242220 2018-09-08 stsp #include <stdio.h>
28 ad242220 2018-09-08 stsp #include <stdlib.h>
29 ad242220 2018-09-08 stsp #include <string.h>
30 ad242220 2018-09-08 stsp #include <sha1.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 ad242220 2018-09-08 stsp err = got_error_from_errno();
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;
75 55da3778 2018-09-10 stsp memset(&imsg, 0, sizeof(imsg));
76 ad242220 2018-09-08 stsp imsg.fd = -1;
77 55da3778 2018-09-10 stsp memset(&imsg_outfd, 0, sizeof(imsg_outfd));
78 ad242220 2018-09-08 stsp imsg_outfd.fd = -1;
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_BLOB_REQUEST) {
96 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
100 ad242220 2018-09-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
101 ad242220 2018-09-08 stsp if (datalen != 0) {
102 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
105 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
106 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
110 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg_outfd, &ibuf, 0);
112 ad242220 2018-09-08 stsp if (imsg.hdr.len == 0)
113 ad242220 2018-09-08 stsp err = NULL;
117 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type == GOT_IMSG_STOP)
120 ad242220 2018-09-08 stsp if (imsg_outfd.hdr.type != GOT_IMSG_BLOB_OUTFD) {
121 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
125 ad242220 2018-09-08 stsp datalen = imsg_outfd.hdr.len - IMSG_HEADER_SIZE;
126 ad242220 2018-09-08 stsp if (datalen != 0) {
127 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
130 ad242220 2018-09-08 stsp if (imsg_outfd.fd == -1) {
131 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
135 ad242220 2018-09-08 stsp f = fdopen(imsg.fd, "rb");
136 ad242220 2018-09-08 stsp if (f == NULL) {
137 ad242220 2018-09-08 stsp err = got_error_from_errno();
141 ad242220 2018-09-08 stsp err = got_inflate_to_fd(&size, f, imsg_outfd.fd);
145 ad242220 2018-09-08 stsp err = got_privsep_send_blob(&ibuf, size);
149 ad242220 2018-09-08 stsp else if (imsg.fd != -1)
150 ad242220 2018-09-08 stsp close(imsg.fd);
151 ad242220 2018-09-08 stsp if (imsg_outfd.fd != -1)
152 ad242220 2018-09-08 stsp close(imsg_outfd.fd);
153 ad242220 2018-09-08 stsp imsg_free(&imsg);
154 ad242220 2018-09-08 stsp imsg_free(&imsg_outfd);
159 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
161 80d5f134 2018-11-11 stsp if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
162 80d5f134 2018-11-11 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
163 99437157 2018-11-11 stsp got_privsep_send_error(&ibuf, err);
166 ad242220 2018-09-08 stsp close(GOT_IMSG_FD_CHILD);
167 ad242220 2018-09-08 stsp return err ? 1 : 0;
