From 45d9d4477663635bc77a1f2253535dfb20358821 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Wed, 27 Apr 2005 23:13:11 +0000 Subject: demon's dyndns updater --- base64.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 base64.c (limited to 'base64.c') diff --git a/base64.c b/base64.c new file mode 100644 index 0000000..3218aa7 --- /dev/null +++ b/base64.c @@ -0,0 +1,78 @@ +/* $Id$ */ +/* + * Copyright (c) 1995-2001 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include "base64.h" + +static char base64_chars[] = +"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; + +int +base64_encode(const void *data, int size, char **str) +{ + char *s, *p; + int i; + int c; + const unsigned char *q; + + p = s = (char *) malloc(size * 4 / 3 + 4); + if (p == NULL) + return -1; + q = (const unsigned char *) data; + i = 0; + for (i = 0; i < size;) { + c = q[i++]; + c *= 256; + if (i < size) + c += q[i]; + i++; + c *= 256; + if (i < size) + c += q[i]; + i++; + p[0] = base64_chars[(c & 0x00fc0000) >> 18]; + p[1] = base64_chars[(c & 0x0003f000) >> 12]; + p[2] = base64_chars[(c & 0x00000fc0) >> 6]; + p[3] = base64_chars[(c & 0x0000003f) >> 0]; + if (i > size) + p[3] = '='; + if (i > size + 1) + p[2] = '='; + p += 4; + } + *p = 0; + *str = s; + return strlen(s); +} -- cgit v1.2.3