2 * Copyright (c) 2018 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/limits.h>
22 #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)
49 static const struct got_error *
50 read_tree_object(struct got_tree_object **tree, struct got_object *obj, FILE *f)
52 const struct got_error *err = NULL;
56 if (obj->flags & GOT_OBJ_FLAG_PACKED)
57 err = got_read_file_to_mem(&p, &len, f);
59 err = got_inflate_to_mem(&p, &len, f);
63 if (len < obj->hdrlen + obj->size) {
64 err = got_error(GOT_ERR_BAD_OBJ_DATA);
68 /* Skip object header. */
70 err = got_object_parse_tree(tree, p + obj->hdrlen, len);
77 main(int argc, char *argv[])
79 const struct got_error *err = NULL;
80 struct got_tree_object *tree = NULL;
84 signal(SIGINT, catch_sigint);
86 imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
89 /* revoke access to most system calls */
90 if (pledge("stdio recvfd", NULL) == -1) {
91 err = got_error_from_errno();
92 got_privsep_send_error(&ibuf, err);
99 struct got_imsg_object iobj;
101 struct got_object *obj = NULL;
103 if (sigint_received) {
104 err = got_error(GOT_ERR_CANCELLED);
108 err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
110 if (err->code == GOT_ERR_PRIVSEP_PIPE)
115 if (imsg.hdr.type == GOT_IMSG_STOP)
118 if (imsg.hdr.type != GOT_IMSG_TREE_REQUEST) {
119 err = got_error(GOT_ERR_PRIVSEP_MSG);
123 datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
124 if (datalen != sizeof(iobj)) {
125 err = got_error(GOT_ERR_PRIVSEP_LEN);
129 memcpy(&iobj, imsg.data, sizeof(iobj));
130 if (iobj.type != GOT_OBJ_TYPE_TREE) {
131 err = got_error(GOT_ERR_OBJ_TYPE);
136 err = got_error(GOT_ERR_PRIVSEP_NO_FD);
140 obj = calloc(1, sizeof(*obj));
142 err = got_error_from_errno();
145 obj->type = iobj.type;
146 obj->hdrlen = iobj.hdrlen;
147 obj->size = iobj.size;
149 /* Always assume file offset zero. */
150 f = fdopen(imsg.fd, "rb");
152 err = got_error_from_errno();
156 err = read_tree_object(&tree, obj, f);
160 err = got_privsep_send_tree(&ibuf, tree);
164 else if (imsg.fd != -1)
168 got_object_close(obj);
175 if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
176 fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
177 got_privsep_send_error(&ibuf, err);
180 close(GOT_IMSG_FD_CHILD);