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>
34 #include "got_error.h"
35 #include "got_object.h"
37 #include "got_lib_delta.h"
38 #include "got_lib_inflate.h"
39 #include "got_lib_object.h"
40 #include "got_lib_object_parse.h"
41 #include "got_lib_privsep.h"
43 static volatile sig_atomic_t sigint_received;
46 catch_sigint(int signo)
51 static const struct got_error *
52 read_commit_object(struct got_commit_object **commit, FILE *f)
54 struct got_object *obj;
55 const struct got_error *err = NULL;
59 err = got_inflate_to_mem(&p, &len, NULL, f);
63 err = got_object_parse_header(&obj, p, len);
69 if (len < obj->hdrlen + obj->size) {
70 err = got_error(GOT_ERR_BAD_OBJ_DATA);
74 if (obj->type != GOT_OBJ_TYPE_COMMIT) {
75 err = got_error(GOT_ERR_OBJ_TYPE);
79 /* Skip object header. */
81 err = got_object_parse_commit(commit, p + obj->hdrlen, len);
84 got_object_close(obj);
89 main(int argc, char *argv[])
91 const struct got_error *err = NULL;
94 signal(SIGINT, catch_sigint);
96 imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
99 /* revoke access to most system calls */
100 if (pledge("stdio recvfd", NULL) == -1) {
101 err = got_error_from_errno("pledge");
102 got_privsep_send_error(&ibuf, err);
110 struct got_commit_object *commit = NULL;
112 if (sigint_received) {
113 err = got_error(GOT_ERR_CANCELLED);
117 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
119 if (err->code == GOT_ERR_PRIVSEP_PIPE)
124 if (imsg.hdr.type == GOT_IMSG_STOP)
127 if (imsg.hdr.type != GOT_IMSG_COMMIT_REQUEST) {
128 err = got_error(GOT_ERR_PRIVSEP_MSG);
133 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
137 /* Always assume file offset zero. */
138 f = fdopen(imsg.fd, "rb");
140 err = got_error_from_errno("fdopen");
144 err = read_commit_object(&commit, f);
148 err = got_privsep_send_commit(&ibuf, commit);
149 got_object_commit_close(commit);
152 if (fclose(f) != 0 && err == NULL)
153 err = got_error_from_errno("fclose");
154 } else if (imsg.fd != -1) {
155 if (close(imsg.fd) != 0 && err == NULL)
156 err = got_error_from_errno("close");
165 if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
166 fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
167 got_privsep_send_error(&ibuf, err);
170 if (close(GOT_IMSG_FD_CHILD) != 0 && err == NULL)
171 err = got_error_from_errno("close");