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Diffstat (limited to 'lib/base64.c')
| -rw-r--r-- | lib/base64.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/lib/base64.c b/lib/base64.c deleted file mode 100644 index 07caa0a..0000000 --- a/lib/base64.c +++ /dev/null @@ -1,188 +0,0 @@ -// Slightly moulded by Fox to better suit his (poor?) tastes. - -/* -The compilation of software known as FreeBSD is distributed under the -following terms: - -Copyright (c) 1992-2014 The FreeBSD Project. 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. - -THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. -*/ - -/* - * Base64 encoding/decoding (RFC1341) - * Copyright (c) 2005-2011, Jouni Malinen <j@w1.fi> - * - * This software may be distributed under the terms of the BSD license. - * See README for more details. - */ - -#include "base64.h" - -static const unsigned char base64_table[65] = - "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; - -/** - * base64_encode - Base64 encode - * @src: Data to be encoded - * @len: Length of the data to be encoded - * @out_len: Pointer to output length variable, or %NULL if not used - * Returns: Allocated buffer of out_len bytes of encoded data, - * or %NULL on failure - * - * Caller is responsible for freeing the returned buffer. Returned buffer is - * nul terminated to make it easier to use as a C string. The nul terminator is - * not included in out_len. - */ - -size_t base64_encode_size(size_t len) -{ - size_t olen; - olen = len * 4 / 3 + 4; /* 3-byte blocks to 4-byte */ - // olen += olen / 72; /* line feeds */ - olen++; /* nul termination */ - Assert(olen >= len); - return olen; -} - -void base64_encode(const unsigned char *src, size_t len, - unsigned char *out, size_t *out_len) -{ - unsigned char *pos; - const unsigned char *end, *in; - int line_len; - - Assert(out != NULL) - - end = src + len; - in = src; - pos = out; - line_len = 0; - while (end - in >= 3) { - *pos++ = base64_table[in[0] >> 2]; - *pos++ = base64_table[((in[0] & 0x03) << 4) | (in[1] >> 4)]; - *pos++ = base64_table[((in[1] & 0x0f) << 2) | (in[2] >> 6)]; - *pos++ = base64_table[in[2] & 0x3f]; - in += 3; - line_len += 4; - if (line_len >= 72) { - // *pos++ = '\n'; - line_len = 0; - } - } - - if (end - in) { - *pos++ = base64_table[in[0] >> 2]; - if (end - in == 1) { - *pos++ = base64_table[(in[0] & 0x03) << 4]; - *pos++ = '='; - } else { - *pos++ = base64_table[((in[0] & 0x03) << 4) | - (in[1] >> 4)]; - *pos++ = base64_table[(in[1] & 0x0f) << 2]; - } - *pos++ = '='; - line_len += 4; - } - - if (line_len) - *pos++ = '\n'; - - *pos = '\0'; - if (out_len) - *out_len = pos - out; -} - - -/** - * base64_decode - Base64 decode - * @src: Data to be decoded - * @len: Length of the data to be decoded - * @out_len: Pointer to output length variable - * Returns: Allocated buffer of out_len bytes of decoded data, - * or %NULL on failure - * - * Caller is responsible for freeing the returned buffer. - */ -unsigned char * base64_decode(const unsigned char *src, size_t len, - unsigned char *out_buffer, size_t *out_len) -{ - unsigned char dtable[256], *out, *pos, block[4], tmp; - size_t i, count, olen; - int pad = 0; - - // paranoid - // os_memset(dtable, 0x80, 256); - for (i = 0; i < 256; i++) { - dtable[i] = 0x80; - } - - for (i = 0; i < sizeof(base64_table) - 1; i++) - dtable[base64_table[i]] = (unsigned char) i; - dtable[(int)'='] = 0; - - count = 0; - for (i = 0; i < len; i++) { - if (dtable[src[i]] != 0x80) - count++; - } - - if (count == 0 || count % 4) - return NULL; - - olen = count / 4 * 3; - pos = out = out_buffer; - Assert(out != NULL) - - count = 0; - for (i = 0; i < len; i++) { - tmp = dtable[src[i]]; - if (tmp == 0x80) - continue; - - if (src[i] == '=') - pad++; - block[count] = tmp; - count++; - if (count == 4) { - *pos++ = (block[0] << 2) | (block[1] >> 4); - *pos++ = (block[1] << 4) | (block[2] >> 2); - *pos++ = (block[2] << 6) | block[3]; - count = 0; - if (pad) { - if (pad == 1) - pos--; - else if (pad == 2) - pos -= 2; - else { - /* Invalid padding */ - return NULL; - } - break; - } - } - } - - *out_len = pos - out; - return out; -} - |