1 /* $NetBSD: dumpdata.c,v 1.1.1.2 2014/04/24 12:45:52 pettai Exp $ */
2
3 /*
4 * Copyright (c) 2005 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include <config.h>
37
38 #include <krb5/roken.h>
39
40 /*
41 * Write datablob to a filename, don't care about errors.
42 */
43
44 ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
rk_dumpdata(const char * filename,const void * buf,size_t size)45 rk_dumpdata (const char *filename, const void *buf, size_t size)
46 {
47 int fd;
48
49 fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0640);
50 if (fd < 0)
51 return;
52 net_write(fd, buf, size);
53 close(fd);
54 }
55
56 /*
57 * Read all data from a filename, care about errors.
58 */
59
60 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
rk_undumpdata(const char * filename,void ** buf,size_t * size)61 rk_undumpdata(const char *filename, void **buf, size_t *size)
62 {
63 struct stat sb;
64 int fd, ret;
65 ssize_t sret;
66
67 *buf = NULL;
68
69 fd = open(filename, O_RDONLY, 0);
70 if (fd < 0)
71 return errno;
72 if (fstat(fd, &sb) != 0){
73 ret = errno;
74 goto out;
75 }
76 *buf = malloc(sb.st_size);
77 if (*buf == NULL) {
78 ret = ENOMEM;
79 goto out;
80 }
81 *size = sb.st_size;
82
83 sret = net_read(fd, *buf, *size);
84 if (sret < 0)
85 ret = errno;
86 else if (sret != (ssize_t)*size) {
87 ret = EINVAL;
88 free(*buf);
89 *buf = NULL;
90 } else
91 ret = 0;
92
93 out:
94 close(fd);
95 return ret;
96 }
97