2 * Copyright (c) 2005-2008 Daniel Braniss <danny@cs.huji.ac.il>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 | $Id: misc.c,v 2.1 2006/11/12 08:06:51 danny Exp $
32 #include <sys/param.h>
33 #include <sys/types.h>
34 #include <sys/socket.h>
35 #include <sys/sysctl.h>
37 #include <netinet/in.h>
38 #include <netinet/tcp.h>
39 #include <arpa/inet.h>
60 static char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
61 "abcdefghijklmnopqrstuvwxyz"
64 static __inline unsigned char
65 c64tobin(unsigned char c64)
68 for(i = 0; i < 64; i++)
74 | according to rfc3720, the binary string
75 | cannot be larger than 1024 - but i can't find it :-) XXX
79 str2bin(char *str, char **rsp)
81 char *src, *dst, *tmp;
86 if(strncasecmp("0x", src, 2) == 0) {
90 if((tmp = malloc((len+1)/2)) == NULL) {
91 // XXX: print some error?
98 *dst = c2b(*src++) << 4;
99 *dst++ |= c2b(*src++);
103 if(strncasecmp("0b", src , 2) == 0) {
108 len = strlen(src) / 4 * 3;
109 if((tmp = malloc(len)) == NULL) {
110 // XXX: print some error?
115 while(*src && ((b6 = c64tobin(*src++)) != 64)) {
138 | assume it to be an ascii string, so just copy it
141 if((tmp = malloc(len)) == NULL)
154 bin2str(char *encoding, unsigned char *md, int blen)
160 if(strncasecmp(encoding, "0x", 2) == 0) {
164 dst = malloc(len + 3);
165 strcpy(dst, encoding);
168 sprintf(ofmt, "%%02%c", encoding[1]);
170 sprintf(ds, ofmt, *cp++);
176 if(strncasecmp(encoding, "0b", 2) == 0) {
179 len = (blen + 2) * 4 / 3;
180 dst = malloc(len + 3);
181 strcpy(dst, encoding);
184 b6 = 0; // to keep compiler happy.
185 for(i = 0; i < blen; i++) {
188 *ds++ = base64[*cp >> 2];
189 b6 = (*cp & 0x3) << 4;
194 b6 = (*cp & 0xf) << 2;
199 *ds++ = base64[*cp & 0x3f];