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 ad242220 2018-09-08 stsp #include <stdio.h>
27 ad242220 2018-09-08 stsp #include <stdlib.h>
28 ad242220 2018-09-08 stsp #include <string.h>
29 ad242220 2018-09-08 stsp #include <sha1.h>
30 ad242220 2018-09-08 stsp #include <zlib.h>
32 ad242220 2018-09-08 stsp #include "got_error.h"
33 ad242220 2018-09-08 stsp #include "got_object.h"
35 ad242220 2018-09-08 stsp #include "got_lib_delta.h"
36 ad242220 2018-09-08 stsp #include "got_lib_inflate.h"
37 ad242220 2018-09-08 stsp #include "got_lib_object.h"
38 ad242220 2018-09-08 stsp #include "got_lib_object_parse.h"
39 ad242220 2018-09-08 stsp #include "got_lib_privsep.h"
41 ad242220 2018-09-08 stsp static const struct got_error *
42 ad242220 2018-09-08 stsp read_commit_object(struct got_commit_object **commit, struct got_object *obj,
45 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
49 ad242220 2018-09-08 stsp if (obj->flags & GOT_OBJ_FLAG_PACKED)
50 ad242220 2018-09-08 stsp err = got_read_file_to_mem(&p, &len, f);
52 ad242220 2018-09-08 stsp err = got_inflate_to_mem(&p, &len, f);
56 ad242220 2018-09-08 stsp if (len < obj->hdrlen + obj->size) {
57 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_BAD_OBJ_DATA);
61 ad242220 2018-09-08 stsp /* Skip object header. */
62 ad242220 2018-09-08 stsp len -= obj->hdrlen;
63 ad242220 2018-09-08 stsp err = got_object_parse_commit(commit, p + obj->hdrlen, len);
70 ad242220 2018-09-08 stsp main(int argc, char *argv[])
72 ad242220 2018-09-08 stsp const struct got_error *err = NULL;
73 ad242220 2018-09-08 stsp struct got_commit_object *commit = NULL;
74 ad242220 2018-09-08 stsp struct imsgbuf ibuf;
75 ad242220 2018-09-08 stsp size_t datalen;
77 ad242220 2018-09-08 stsp imsg_init(&ibuf, GOT_IMSG_FD_CHILD);
79 ad242220 2018-09-08 stsp /* revoke access to most system calls */
80 ad242220 2018-09-08 stsp if (pledge("stdio recvfd", NULL) == -1) {
81 ad242220 2018-09-08 stsp err = got_error_from_errno();
82 ad242220 2018-09-08 stsp got_privsep_send_error(&ibuf, err);
87 ad242220 2018-09-08 stsp struct imsg imsg;
88 ad242220 2018-09-08 stsp struct got_imsg_object iobj;
89 ad242220 2018-09-08 stsp FILE *f = NULL;
90 ad242220 2018-09-08 stsp struct got_object *obj = NULL;
92 ad242220 2018-09-08 stsp err = got_privsep_recv_imsg(&imsg, &ibuf, 0);
94 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
99 ad242220 2018-09-08 stsp if (imsg.hdr.type == GOT_IMSG_STOP)
102 ad242220 2018-09-08 stsp if (imsg.hdr.type != GOT_IMSG_COMMIT_REQUEST) {
103 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_MSG);
107 ad242220 2018-09-08 stsp datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
108 ad242220 2018-09-08 stsp if (datalen != sizeof(iobj)) {
109 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_LEN);
113 ad242220 2018-09-08 stsp memcpy(&iobj, imsg.data, sizeof(iobj));
114 ad242220 2018-09-08 stsp if (iobj.type != GOT_OBJ_TYPE_COMMIT) {
115 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_OBJ_TYPE);
119 ad242220 2018-09-08 stsp if (imsg.fd == -1) {
120 ad242220 2018-09-08 stsp err = got_error(GOT_ERR_PRIVSEP_NO_FD);
124 ad242220 2018-09-08 stsp obj = calloc(1, sizeof(*obj));
125 ad242220 2018-09-08 stsp if (obj == NULL) {
126 ad242220 2018-09-08 stsp err = got_error_from_errno();
129 ad242220 2018-09-08 stsp obj->type = iobj.type;
130 ad242220 2018-09-08 stsp obj->hdrlen = iobj.hdrlen;
131 ad242220 2018-09-08 stsp obj->size = iobj.size;
133 ad242220 2018-09-08 stsp /* Always assume file offset zero. */
134 ad242220 2018-09-08 stsp f = fdopen(imsg.fd, "rb");
135 ad242220 2018-09-08 stsp if (f == NULL) {
136 ad242220 2018-09-08 stsp err = got_error_from_errno();
140 ad242220 2018-09-08 stsp err = read_commit_object(&commit, obj, f);
144 ad242220 2018-09-08 stsp err = got_privsep_send_commit(&ibuf, commit);
148 ad242220 2018-09-08 stsp else if (imsg.fd != -1)
149 ad242220 2018-09-08 stsp close(imsg.fd);
150 ad242220 2018-09-08 stsp imsg_free(&imsg);
152 ad242220 2018-09-08 stsp got_object_close(obj);
154 876c234b 2018-09-10 stsp if (err->code == GOT_ERR_PRIVSEP_PIPE)
155 876c234b 2018-09-10 stsp err = NULL;
157 876c234b 2018-09-10 stsp got_privsep_send_error(&ibuf, err);
162 ad242220 2018-09-08 stsp imsg_clear(&ibuf);
164 ad242220 2018-09-08 stsp fprintf(stderr, "%s: %s\n", getprogname(), err->msg);
165 ad242220 2018-09-08 stsp close(GOT_IMSG_FD_CHILD);
166 ad242220 2018-09-08 stsp return err ? 1 : 0;