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;
49 ad242220 2018-09-08 stsp static const struct got_error *
50 ad242220 2018-09-08 stsp read_tree_object(struct got_tree_object **tree, struct got_object *obj, FILE *f)
52 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
56 ad242220 2018-09-08 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED)
57 ad242220 2018-09-08 stsp err = got_read_file_to_mem(&p, &len, f);
59 ad242220 2018-09-08 stsp err = got_inflate_to_mem(&p, &len, f);
63 ad242220 2018-09-08 stsp if (len < obj->hdrlen + obj->size) {
64 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
68 ad242220 2018-09-08 stsp /* Skip object header. */
69 ad242220 2018-09-08 stsp len -= obj->hdrlen;
70 ad242220 2018-09-08 stsp err = got_object_parse_tree(tree, p + obj->hdrlen, len);
77 ad242220 2018-09-08 stsp main(int argc, char *argv[])
79 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
80 ad242220 2018-09-08 stsp struct got_tree_object *tree = NULL;
81 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
82 ad242220 2018-09-08 stsp size_t datalen;
84 99437157 2018-11-11 stsp signal(SIGINT, catch_sigint);
86 ad242220 2018-09-08 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
88 2ff12563 2018-09-15 stsp #ifndef PROFILE
89 ad242220 2018-09-08 stsp /* revoke access to most system calls */
90 ad242220 2018-09-08 stsp if (pledge("stdio recvfd", NULL) == -1) {
91 ad242220 2018-09-08 stsp err = got_error_from_errno();
92 ad242220 2018-09-08 stsp got_privsep_send_error(&ibuf, err);
98 ad242220 2018-09-08 stsp struct imsg imsg;
99 ad242220 2018-09-08 stsp struct got_imsg_object iobj;
100 ad242220 2018-09-08 stsp FILE *f = NULL;
101 ad242220 2018-09-08 stsp struct got_object *obj = NULL;
103 99437157 2018-11-11 stsp if (sigint_received) {
104 99437157 2018-11-11 stsp err = got_error(GOT_ERR_CANCELLED);
108 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
110 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
111 ad242220 2018-09-08 stsp err = NULL;
115 ad242220 2018-09-08 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
118 ad242220 2018-09-08 stsp if (imsg.hdr.type != GOT_IMSG_TREE_REQUEST) {
119 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
123 ad242220 2018-09-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
124 ad242220 2018-09-08 stsp if (datalen != sizeof(iobj)) {
125 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
129 ad242220 2018-09-08 stsp memcpy(&iobj, imsg.data, sizeof(iobj));
130 ad242220 2018-09-08 stsp if (iobj.type != GOT_OBJ_TYPE_TREE) {
131 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_OBJ_TYPE);
135 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
136 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
140 ad242220 2018-09-08 stsp obj = calloc(1, sizeof(*obj));
141 ad242220 2018-09-08 stsp if (obj == NULL) {
142 ad242220 2018-09-08 stsp err = got_error_from_errno();
145 ad242220 2018-09-08 stsp obj->type = iobj.type;
146 ad242220 2018-09-08 stsp obj->hdrlen = iobj.hdrlen;
147 ad242220 2018-09-08 stsp obj->size = iobj.size;
149 ad242220 2018-09-08 stsp /* Always assume file offset zero. */
150 ad242220 2018-09-08 stsp f = fdopen(imsg.fd, "rb");
151 ad242220 2018-09-08 stsp if (f == NULL) {
152 ad242220 2018-09-08 stsp err = got_error_from_errno();
156 ad242220 2018-09-08 stsp err = read_tree_object(&tree, obj, f);
160 ad242220 2018-09-08 stsp err = got_privsep_send_tree(&ibuf, tree);
164 ad242220 2018-09-08 stsp else if (imsg.fd != -1)
165 ad242220 2018-09-08 stsp close(imsg.fd);
166 ad242220 2018-09-08 stsp imsg_free(&imsg);
168 ad242220 2018-09-08 stsp got_object_close(obj);
173 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
175 80d5f134 2018-11-11 stsp if (!sigint_received && err->code != GOT_ERR_PRIVSEP_PIPE) {
176 80d5f134 2018-11-11 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
177 99437157 2018-11-11 stsp got_privsep_send_error(&ibuf, err);
180 ad242220 2018-09-08 stsp close(GOT_IMSG_FD_CHILD);
181 ad242220 2018-09-08 stsp return err ? 1 : 0;