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Diffstat (limited to 'src/supplemental/base64/base64.c')
| -rw-r--r-- | src/supplemental/base64/base64.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/src/supplemental/base64/base64.c b/src/supplemental/base64/base64.c deleted file mode 100644 index 3c19ad8a..00000000 --- a/src/supplemental/base64/base64.c +++ /dev/null @@ -1,145 +0,0 @@ -// -// Copyright (c) 2014 Wirebird Labs LLC. All rights reserved. -// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech> -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), -// to deal in the Software without restriction, including without limitation -// the rights to use, copy, modify, merge, publish, distribute, sublicense, -// and/or sell copies of the Software, and to permit persons to whom -// the Software is furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included -// in all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL -// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING -// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS -// IN THE SOFTWARE. -// - -#include "base64.h" - -#include <ctype.h> - -size_t -nni_base64_decode(const char *in, size_t in_len, uint8_t *out, size_t out_len) -{ - unsigned ii; - unsigned rem; - uint32_t v; - uint8_t ch; - size_t io; - - // Unrolled lookup of ASCII code points. - // 0xFF represents a non-base64 valid character. - const uint8_t decode[256] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3E, 0xFF, 0xFF, 0xFF, - 0x3F, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, - 0x3D, 0xFF, 0xFF, 0xFF, 0x3E, 0xFF, 0xFF, 0xFF, 0x00, 0x01, - 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, - 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, - 0x16, 0x17, 0x18, 0x19, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, - 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, - 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, - 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; - - for (io = 0, ii = 0, v = 0, rem = 0; ii < in_len; ii++) { - if (isspace(in[ii])) { - continue; - } - - if (in[ii] == '=') { - break; - } - - ch = decode[(int) (in[ii])]; - - // Discard invalid characters as per RFC 2045. - if (ch == 0xFF) { - break; - } - - v = (v << 6u) | ch; - rem += 6; - - if (rem >= 8) { - rem -= 8; - if (io >= out_len) - return (-1); - out[io++] = (v >> rem) & 255u; - } - } - if (rem >= 8) { - rem -= 8; - if (io >= out_len) - return (-1); - out[io++] = (v >> rem) & 255u; - } - return (io); -} - -size_t -nni_base64_encode(const uint8_t *in, size_t in_len, char *out, size_t out_len) -{ - unsigned ii; - unsigned rem; - uint32_t v; - size_t io; - - const uint8_t encode[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "abcdefghijklmnopqrstuvwxyz" - "0123456789+/"; - - for (io = 0, ii = 0, v = 0, rem = 0; ii < in_len; ii++) { - uint8_t ch = in[ii]; - v = (v << 8u) | ch; - rem += 8; - while (rem >= 6) { - rem -= 6; - if (io >= out_len) - return (-1); - out[io++] = encode[(v >> rem) & 63u]; - } - } - - if (rem) { - v <<= (6 - rem); - if (io >= out_len) - return (-1); - out[io++] = encode[v & 63u]; - } - - // Pad to a multiple of 3. - while (io & 3u) { - if (io >= out_len) - return (-1); - out[io++] = '='; - } - - if (io >= out_len) - return (-1); - - out[io] = '\0'; - - return (io); -} |