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>
21 #include <sys/syslimits.h>
33 #include "got_error.h"
34 #include "got_object.h"
36 #include "got_lib_delta.h"
37 #include "got_lib_inflate.h"
38 #include "got_lib_object.h"
39 #include "got_lib_object_parse.h"
40 #include "got_lib_privsep.h"
42 static volatile sig_atomic_t sigint_received;
45 catch_sigint(int signo)
50 static const struct got_error *
51 read_commit_object(struct got_commit_object **commit, FILE *f)
53 struct got_object *obj;
54 const struct got_error *err = NULL;
58 err = got_inflate_to_mem(&p, &len, f);
62 err = got_object_parse_header(&obj, p, len);
68 if (len < obj->hdrlen + obj->size) {
69 err = got_error(GOT_ERR_BAD_OBJ_DATA);
73 if (obj->type != GOT_OBJ_TYPE_COMMIT) {
74 err = got_error(GOT_ERR_OBJ_TYPE);
78 /* Skip object header. */
80 err = got_object_parse_commit(commit, p + obj->hdrlen, len);
83 got_object_close(obj);
88 main(int argc, char *argv[])
90 const struct got_error *err = NULL;
93 signal(SIGINT, catch_sigint);
95 imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
98 /* revoke access to most system calls */
99 if (pledge("stdio recvfd", NULL) == -1) {
100 err = got_error_from_errno("pledge");
101 got_privsep_send_error(&ibuf, err);
109 struct got_commit_object *commit = NULL;
111 if (sigint_received) {
112 err = got_error(GOT_ERR_CANCELLED);
116 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
118 if (err->code == GOT_ERR_PRIVSEP_PIPE)
123 if (imsg.hdr.type == GOT_IMSG_STOP)
126 if (imsg.hdr.type != GOT_IMSG_COMMIT_REQUEST) {
127 err = got_error(GOT_ERR_PRIVSEP_MSG);
132 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
136 /* Always assume file offset zero. */
137 f = fdopen(imsg.fd, "rb");
139 err = got_error_from_errno("fdopen");
143 err = read_commit_object(&commit, f);
147 err = got_privsep_send_commit(&ibuf, commit);
148 got_object_commit_close(commit);
151 if (fclose(f) != 0 && err == NULL)
152 err = got_error_from_errno("fclose");
153 } else if (imsg.fd != -1) {
154 if (close(imsg.fd) != 0 && err == NULL)
155 err = got_error_from_errno("close");
164 if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
165 fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
166 got_privsep_send_error(&ibuf, err);
169 if (close(GOT_IMSG_FD_CHILD) != 0 && err == NULL)
170 err = got_error_from_errno("close");