2 * Copyright (c) 2018, 2019, 2020 Stefan Sperling <stsp@openbsd.org>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <sys/types.h>
18 #include <sys/queue.h>
34 #include "got_error.h"
35 #include "got_object.h"
38 #include "got_lib_delta.h"
39 #include "got_lib_inflate.h"
40 #include "got_lib_object.h"
41 #include "got_lib_object_parse.h"
42 #include "got_lib_privsep.h"
43 #include "got_lib_hash.h"
45 static volatile sig_atomic_t sigint_received;
48 catch_sigint(int signo)
54 main(int argc, char *argv[])
56 const struct got_error *err = NULL;
59 struct got_parsed_tree_entry *entries = NULL;
60 size_t nentries = 0, nentries_alloc = 0;
62 signal(SIGINT, catch_sigint);
64 imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
67 /* revoke access to most system calls */
68 if (pledge("stdio recvfd", NULL) == -1) {
69 err = got_error_from_errno("pledge");
70 got_privsep_send_error(&ibuf, err);
78 struct got_object_id expected_id;
80 if (sigint_received) {
81 err = got_error(GOT_ERR_CANCELLED);
85 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
87 if (err->code == GOT_ERR_PRIVSEP_PIPE)
92 if (imsg.hdr.type == GOT_IMSG_STOP)
95 if (imsg.hdr.type != GOT_IMSG_TREE_REQUEST) {
96 err = got_error(GOT_ERR_PRIVSEP_MSG);
100 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
101 if (datalen != sizeof(expected_id)) {
102 err = got_error(GOT_ERR_PRIVSEP_LEN);
105 memcpy(&expected_id, imsg.data, sizeof(expected_id));
108 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
112 /* Always assume file offset zero. */
113 err = got_object_read_tree(&entries, &nentries, &nentries_alloc,
114 &buf, imsg.fd, &expected_id);
118 err = got_privsep_send_tree(&ibuf, entries, nentries);
121 if (imsg.fd != -1 && close(imsg.fd) == -1 && err == NULL)
122 err = got_error_from_errno("close");
131 if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
132 fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
133 got_privsep_send_error(&ibuf, err);
136 if (close(GOT_IMSG_FD_CHILD) == -1 && err == NULL)
137 err = got_error_from_errno("close");