Annotation of libaitsync/src/tool.c, revision 1.6
1.1 misho 1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.6 ! misho 6: * $Id: tool.c,v 1.5.2.1 2014/02/04 16:39:00 misho Exp $
1.1 misho 7: *
1.2 misho 8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
1.6 ! misho 15: Copyright 2004 - 2014
1.2 misho 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
1.1 misho 46: #include "global.h"
47: #include "tool.h"
48:
49:
50: /*
1.4 misho 51: * sync_mksig() - Make signature from chunk
52: *
1.1 misho 53: * @id = chunk id
54: * @off = file offset
55: * @buf = chunk buffer for calculate signature
56: * @buflen = buffer length in bytes
57: * @sc = Chunk structure for fill
58: */
1.5 misho 59: void
1.3 misho 60: sync_mksig(int id, off_t off, u_char * __restrict buf, int buflen, sync_chunk_t * __restrict sc)
1.1 misho 61: {
62: MD5_CTX ctx;
63:
64: MD5_Init(&ctx);
65: memset(sc, 0, sizeof(sync_chunk_t));
66: sc->sc_magic = DLTSYNC_MAGIC;
67: sc->sc_id = id;
68: sc->sc_off = off;
69: sc->sc_len = buflen;
70: sc->sc_roll = crcAdler(buf, buflen);
71: MD5_Update(&ctx, buf, buflen);
72: MD5_Final(sc->sc_cksum, &ctx);
73: }
74:
1.4 misho 75: #if 0
1.1 misho 76: /*
1.4 misho 77: * sync_WriteNum() - Write to handle converted number to bigendian
78: *
1.1 misho 79: * @f = handle
80: * @ulNum = number to convert
81: * @nNumLen = length of number to bytes
82: * return: -1 error, != -1 writed bytes to handle
83: */
1.5 misho 84: int
1.4 misho 85: sync_WriteNum(int f, u_long ulNum, int nNumLen)
1.1 misho 86: {
87: u_char buf[sizeof ulNum];
88: register int i;
89:
90: if (nNumLen < 1 || nNumLen > ULONG_MAX) {
1.4 misho 91: sync_SetErr(-1, "Illegal number len %d\n", nNumLen);
1.1 misho 92: return -1;
93: }
94:
95: for (i = nNumLen - 1; i; i--) {
96: buf[i] = (u_char) ulNum;
97: ulNum >>= 8;
98: }
99:
100: return write(f, buf, nNumLen);
101: }
1.4 misho 102: #endif
1.2 misho 103:
104: #ifndef HAVE_MKSTEMPS
1.3 misho 105: /* API function missing in NetBSD base source tree!!! */
1.2 misho 106: #define TEMPCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
107: #define NUM_CHARS (sizeof(TEMPCHARS) - 1)
108:
109: int
110: mkstemps(char *path, int slen)
111: {
112: char *start, *cp, *ep;
113: const char *tempchars = TEMPCHARS;
114: unsigned int tries = 1;
115: size_t len;
116: int fd;
117:
118: assert(path);
119: len = strlen(path);
120: if (len == 0 || slen >= len) {
121: errno = EINVAL;
122: goto end;
123: } else
124: ep = path + len - slen;
125:
126: for (start = ep; start > path && start[-1] == 'X'; start--) {
127: if (tries < INT_MAX / NUM_CHARS)
128: tries *= NUM_CHARS;
129: }
130: tries *= 2;
131:
132: do {
133: for (cp = start; cp != ep; cp++)
134: *cp = tempchars[arc4random_uniform(NUM_CHARS)];
135:
136: fd = open(path, O_CREAT | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR);
137: if (fd != -1 || errno != EEXIST)
138: return fd;
139: } while (--tries);
140:
141: errno = EEXIST;
142: end:
143: return -1;
144: }
145: #endif
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>