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Diffstat (limited to 'base64.c')
| -rw-r--r-- | base64.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/base64.c b/base64.c deleted file mode 100644 index 3449ae5..0000000 --- a/base64.c +++ /dev/null @@ -1,140 +0,0 @@ -/* - * 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 "syshead.h" - -#if defined(ENABLE_HTTP_PROXY) || defined(ENABLE_PKCS11) || defined(ENABLE_CLIENT_CR) - -#include "base64.h" - -#include "memdbg.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); -} - -static int -pos(char c) -{ - char *p; - for (p = base64_chars; *p; p++) - if (*p == c) - return p - base64_chars; - return -1; -} - -#define DECODE_ERROR 0xffffffff - -static unsigned int -token_decode(const char *token) -{ - int i; - unsigned int val = 0; - int marker = 0; - if (strlen(token) < 4) - return DECODE_ERROR; - for (i = 0; i < 4; i++) { - val *= 64; - if (token[i] == '=') - marker++; - else if (marker > 0) - return DECODE_ERROR; - else - val += pos(token[i]); - } - if (marker > 2) - return DECODE_ERROR; - return (marker << 24) | val; -} - -int -base64_decode(const char *str, void *data) -{ - const char *p; - unsigned char *q; - - q = data; - for (p = str; *p && (*p == '=' || strchr(base64_chars, *p)); p += 4) { - unsigned int val = token_decode(p); - unsigned int marker = (val >> 24) & 0xff; - if (val == DECODE_ERROR) - return -1; - *q++ = (val >> 16) & 0xff; - if (marker < 2) - *q++ = (val >> 8) & 0xff; - if (marker < 1) - *q++ = val & 0xff; - } - return q - (unsigned char *) data; -} - -#else -static void dummy(void) {} -#endif /* ENABLE_HTTP_PROXY, ENABLE_PKCS11, ENABLE_CLIENT_CR */ |