diff options
author | yazevnul <yazevnul@yandex-team.ru> | 2022-02-10 16:46:48 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:46:48 +0300 |
commit | 9abfb1a53b7f7b791444d1378e645d8fad9b06ed (patch) | |
tree | 49e222ea1c5804306084bb3ae065bb702625360f /contrib/libs/base64/plain32 | |
parent | 8cbc307de0221f84c80c42dcbe07d40727537e2c (diff) | |
download | ydb-9abfb1a53b7f7b791444d1378e645d8fad9b06ed.tar.gz |
Restoring authorship annotation for <yazevnul@yandex-team.ru>. Commit 2 of 2.
Diffstat (limited to 'contrib/libs/base64/plain32')
-rw-r--r-- | contrib/libs/base64/plain32/codec_plain.c | 68 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/codecs.h | 84 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/dec_head.c | 58 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/dec_tail.c | 130 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/dec_uint32.c | 92 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/enc_head.c | 46 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/enc_tail.c | 56 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/enc_uint32.c | 46 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/lib.c | 242 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/libbase64.h | 178 | ||||
-rw-r--r-- | contrib/libs/base64/plain32/ya.make | 32 |
11 files changed, 516 insertions, 516 deletions
diff --git a/contrib/libs/base64/plain32/codec_plain.c b/contrib/libs/base64/plain32/codec_plain.c index 0960e8dfb9..740d343468 100644 --- a/contrib/libs/base64/plain32/codec_plain.c +++ b/contrib/libs/base64/plain32/codec_plain.c @@ -1,35 +1,35 @@ -#include <stdint.h> -#include <stddef.h> -#include <stdlib.h> +#include <stdint.h> +#include <stddef.h> +#include <stdlib.h> #include <string.h> - -#include "libbase64.h" -#include "codecs.h" - -void -plain32_base64_stream_encode - ( struct plain32_base64_state *state - , const char *src - , size_t srclen - , char *out - , size_t *outlen - ) -{ - #include "enc_head.c" - #include "enc_uint32.c" - #include "enc_tail.c" -} - -int -plain32_base64_stream_decode - ( struct plain32_base64_state *state - , const char *src - , size_t srclen - , char *out - , size_t *outlen - ) -{ - #include "dec_head.c" - #include "dec_uint32.c" - #include "dec_tail.c" -} + +#include "libbase64.h" +#include "codecs.h" + +void +plain32_base64_stream_encode + ( struct plain32_base64_state *state + , const char *src + , size_t srclen + , char *out + , size_t *outlen + ) +{ + #include "enc_head.c" + #include "enc_uint32.c" + #include "enc_tail.c" +} + +int +plain32_base64_stream_decode + ( struct plain32_base64_state *state + , const char *src + , size_t srclen + , char *out + , size_t *outlen + ) +{ + #include "dec_head.c" + #include "dec_uint32.c" + #include "dec_tail.c" +} diff --git a/contrib/libs/base64/plain32/codecs.h b/contrib/libs/base64/plain32/codecs.h index 233814b09f..0b31c97cd7 100644 --- a/contrib/libs/base64/plain32/codecs.h +++ b/contrib/libs/base64/plain32/codecs.h @@ -1,42 +1,42 @@ -#pragma once - -// Define machine endianness. This is for GCC: -#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) - #define PLAIN32_LITTLE_ENDIAN 1 -#else - #define PLAIN32_LITTLE_ENDIAN 0 -#endif - -// This is for Clang: -#ifdef __LITTLE_ENDIAN__ - #define PLAIN32_LITTLE_ENDIAN 1 -#endif - -#ifdef __BIG_ENDIAN__ - #define PLAIN32_LITTLE_ENDIAN 0 -#endif - -// Endian conversion functions -#if PLAIN32_LITTLE_ENDIAN -#if defined(_WIN64) || defined(__WIN32__) || defined(_WIN32) - #define cpu_to_be32(x) _byteswap_ulong(x) - #define cpu_to_be64(x) _byteswap_uint64(x) - #define be32_to_cpu(x) _byteswap_ulong(x) - #define be64_to_cpu(x) _byteswap_uint64(x) -#else - #define cpu_to_be32(x) __builtin_bswap32(x) - #define cpu_to_be64(x) __builtin_bswap64(x) - #define be32_to_cpu(x) __builtin_bswap32(x) - #define be64_to_cpu(x) __builtin_bswap64(x) -#endif -#else - #define cpu_to_be32(x) (x) - #define cpu_to_be64(x) (x) - #define be32_to_cpu(x) (x) - #define be64_to_cpu(x) (x) -#endif - -// These tables are used by all codecs -// for fallback plain encoding/decoding: -extern const uint8_t plain32_base64_table_enc[]; -extern const uint8_t plain32_base64_table_dec[]; +#pragma once + +// Define machine endianness. This is for GCC: +#if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) + #define PLAIN32_LITTLE_ENDIAN 1 +#else + #define PLAIN32_LITTLE_ENDIAN 0 +#endif + +// This is for Clang: +#ifdef __LITTLE_ENDIAN__ + #define PLAIN32_LITTLE_ENDIAN 1 +#endif + +#ifdef __BIG_ENDIAN__ + #define PLAIN32_LITTLE_ENDIAN 0 +#endif + +// Endian conversion functions +#if PLAIN32_LITTLE_ENDIAN +#if defined(_WIN64) || defined(__WIN32__) || defined(_WIN32) + #define cpu_to_be32(x) _byteswap_ulong(x) + #define cpu_to_be64(x) _byteswap_uint64(x) + #define be32_to_cpu(x) _byteswap_ulong(x) + #define be64_to_cpu(x) _byteswap_uint64(x) +#else + #define cpu_to_be32(x) __builtin_bswap32(x) + #define cpu_to_be64(x) __builtin_bswap64(x) + #define be32_to_cpu(x) __builtin_bswap32(x) + #define be64_to_cpu(x) __builtin_bswap64(x) +#endif +#else + #define cpu_to_be32(x) (x) + #define cpu_to_be64(x) (x) + #define be32_to_cpu(x) (x) + #define be64_to_cpu(x) (x) +#endif + +// These tables are used by all codecs +// for fallback plain encoding/decoding: +extern const uint8_t plain32_base64_table_enc[]; +extern const uint8_t plain32_base64_table_dec[]; diff --git a/contrib/libs/base64/plain32/dec_head.c b/contrib/libs/base64/plain32/dec_head.c index d95b8b477b..472608fddf 100644 --- a/contrib/libs/base64/plain32/dec_head.c +++ b/contrib/libs/base64/plain32/dec_head.c @@ -1,29 +1,29 @@ -int ret = 0; -const uint8_t *c = (const uint8_t *)src; -uint8_t *o = (uint8_t *)out; -uint8_t q; - -// Use local temporaries to avoid cache thrashing: -size_t outl = 0; -struct plain32_base64_state st; -st.eof = state->eof; -st.bytes = state->bytes; -st.carry = state->carry; - -// If we previously saw an EOF or an invalid character, bail out: -if (st.eof) { - *outlen = 0; - return 0; -} - -// Turn four 6-bit numbers into three bytes: -// out[0] = 11111122 -// out[1] = 22223333 -// out[2] = 33444444 - -// Duff's device again: -switch (st.bytes) -{ - for (;;) - { - case 0: +int ret = 0; +const uint8_t *c = (const uint8_t *)src; +uint8_t *o = (uint8_t *)out; +uint8_t q; + +// Use local temporaries to avoid cache thrashing: +size_t outl = 0; +struct plain32_base64_state st; +st.eof = state->eof; +st.bytes = state->bytes; +st.carry = state->carry; + +// If we previously saw an EOF or an invalid character, bail out: +if (st.eof) { + *outlen = 0; + return 0; +} + +// Turn four 6-bit numbers into three bytes: +// out[0] = 11111122 +// out[1] = 22223333 +// out[2] = 33444444 + +// Duff's device again: +switch (st.bytes) +{ + for (;;) + { + case 0: diff --git a/contrib/libs/base64/plain32/dec_tail.c b/contrib/libs/base64/plain32/dec_tail.c index 27870a94f0..06ab784877 100644 --- a/contrib/libs/base64/plain32/dec_tail.c +++ b/contrib/libs/base64/plain32/dec_tail.c @@ -1,65 +1,65 @@ - if (srclen-- == 0) { - ret = 1; - break; - } - if ((q = plain32_base64_table_dec[*c++]) >= 254) { - st.eof = 1; - // Treat character '=' as invalid for byte 0: - break; - } - st.carry = q << 2; - st.bytes++; - - case 1: if (srclen-- == 0) { - ret = 1; - break; - } - if ((q = plain32_base64_table_dec[*c++]) >= 254) { - st.eof = 1; - // Treat character '=' as invalid for byte 1: - break; - } - *o++ = st.carry | (q >> 4); - st.carry = q << 4; - st.bytes++; - outl++; - - case 2: if (srclen-- == 0) { - ret = 1; - break; - } - if ((q = plain32_base64_table_dec[*c++]) >= 254) { - st.eof = 1; - // When q == 254, the input char is '='. Return 1 and EOF. - // Technically, should check if next byte is also '=', but never mind. - // When q == 255, the input char is invalid. Return 0 and EOF. - ret = (q == 254) ? 1 : 0; - break; - } - *o++ = st.carry | (q >> 2); - st.carry = q << 6; - st.bytes++; - outl++; - - case 3: if (srclen-- == 0) { - ret = 1; - break; - } - if ((q = plain32_base64_table_dec[*c++]) >= 254) { - st.eof = 1; - // When q == 254, the input char is '='. Return 1 and EOF. - // When q == 255, the input char is invalid. Return 0 and EOF. - ret = (q == 254) ? 1 : 0; - break; - } - *o++ = st.carry | q; - st.carry = 0; - st.bytes = 0; - outl++; - } -} -state->eof = st.eof; -state->bytes = st.bytes; -state->carry = st.carry; -*outlen = outl; -return ret; + if (srclen-- == 0) { + ret = 1; + break; + } + if ((q = plain32_base64_table_dec[*c++]) >= 254) { + st.eof = 1; + // Treat character '=' as invalid for byte 0: + break; + } + st.carry = q << 2; + st.bytes++; + + case 1: if (srclen-- == 0) { + ret = 1; + break; + } + if ((q = plain32_base64_table_dec[*c++]) >= 254) { + st.eof = 1; + // Treat character '=' as invalid for byte 1: + break; + } + *o++ = st.carry | (q >> 4); + st.carry = q << 4; + st.bytes++; + outl++; + + case 2: if (srclen-- == 0) { + ret = 1; + break; + } + if ((q = plain32_base64_table_dec[*c++]) >= 254) { + st.eof = 1; + // When q == 254, the input char is '='. Return 1 and EOF. + // Technically, should check if next byte is also '=', but never mind. + // When q == 255, the input char is invalid. Return 0 and EOF. + ret = (q == 254) ? 1 : 0; + break; + } + *o++ = st.carry | (q >> 2); + st.carry = q << 6; + st.bytes++; + outl++; + + case 3: if (srclen-- == 0) { + ret = 1; + break; + } + if ((q = plain32_base64_table_dec[*c++]) >= 254) { + st.eof = 1; + // When q == 254, the input char is '='. Return 1 and EOF. + // When q == 255, the input char is invalid. Return 0 and EOF. + ret = (q == 254) ? 1 : 0; + break; + } + *o++ = st.carry | q; + st.carry = 0; + st.bytes = 0; + outl++; + } +} +state->eof = st.eof; +state->bytes = st.bytes; +state->carry = st.carry; +*outlen = outl; +return ret; diff --git a/contrib/libs/base64/plain32/dec_uint32.c b/contrib/libs/base64/plain32/dec_uint32.c index 58fd78c742..db701d73d4 100644 --- a/contrib/libs/base64/plain32/dec_uint32.c +++ b/contrib/libs/base64/plain32/dec_uint32.c @@ -1,50 +1,50 @@ -// If we have native uint32's, pick off 4 bytes at a time for as long as we -// can, but make sure that we quit before seeing any == markers at the end of -// the string. Also, because we write a zero at the end of the output, ensure -// that there are at least 2 valid bytes of input data remaining to close the -// gap. 4 + 2 + 2 = 8 bytes: -while (srclen >= 8) -{ - uint32_t str, res, dec; - - // Load string: +// If we have native uint32's, pick off 4 bytes at a time for as long as we +// can, but make sure that we quit before seeing any == markers at the end of +// the string. Also, because we write a zero at the end of the output, ensure +// that there are at least 2 valid bytes of input data remaining to close the +// gap. 4 + 2 + 2 = 8 bytes: +while (srclen >= 8) +{ + uint32_t str, res, dec; + + // Load string: //str = *(uint32_t *)c; memcpy(&str, c, sizeof(str)); - - // Shuffle bytes to 32-bit bigendian: - str = cpu_to_be32(str); - - // Lookup each byte in the decoding table; if we encounter any - // "invalid" values, fall back on the bytewise code: - if ((dec = plain32_base64_table_dec[str >> 24]) > 63) { - break; - } - res = dec << 26; - - if ((dec = plain32_base64_table_dec[(str >> 16) & 0xFF]) > 63) { - break; - } - res |= dec << 20; - - if ((dec = plain32_base64_table_dec[(str >> 8) & 0xFF]) > 63) { - break; - } - res |= dec << 14; - - if ((dec = plain32_base64_table_dec[str & 0xFF]) > 63) { - break; - } - res |= dec << 8; - - // Reshuffle and repack into 3-byte output format: - res = be32_to_cpu(res); - - // Store back: + + // Shuffle bytes to 32-bit bigendian: + str = cpu_to_be32(str); + + // Lookup each byte in the decoding table; if we encounter any + // "invalid" values, fall back on the bytewise code: + if ((dec = plain32_base64_table_dec[str >> 24]) > 63) { + break; + } + res = dec << 26; + + if ((dec = plain32_base64_table_dec[(str >> 16) & 0xFF]) > 63) { + break; + } + res |= dec << 20; + + if ((dec = plain32_base64_table_dec[(str >> 8) & 0xFF]) > 63) { + break; + } + res |= dec << 14; + + if ((dec = plain32_base64_table_dec[str & 0xFF]) > 63) { + break; + } + res |= dec << 8; + + // Reshuffle and repack into 3-byte output format: + res = be32_to_cpu(res); + + // Store back: //*(uint32_t *)o = res; memcpy(o, &res, sizeof(res)); - - c += 4; - o += 3; - outl += 3; - srclen -= 4; -} + + c += 4; + o += 3; + outl += 3; + srclen -= 4; +} diff --git a/contrib/libs/base64/plain32/enc_head.c b/contrib/libs/base64/plain32/enc_head.c index e06f2b727a..451f1bdad0 100644 --- a/contrib/libs/base64/plain32/enc_head.c +++ b/contrib/libs/base64/plain32/enc_head.c @@ -1,23 +1,23 @@ -// Assume that *out is large enough to contain the output. -// Theoretically it should be 4/3 the length of src. -const uint8_t *c = (const uint8_t *)src; -uint8_t *o = (uint8_t *)out; - -// Use local temporaries to avoid cache thrashing: -size_t outl = 0; -struct plain32_base64_state st; -st.bytes = state->bytes; -st.carry = state->carry; - -// Turn three bytes into four 6-bit numbers: -// in[0] = 00111111 -// in[1] = 00112222 -// in[2] = 00222233 -// in[3] = 00333333 - -// Duff's device, a for() loop inside a switch() statement. Legal! -switch (st.bytes) -{ - for (;;) - { - case 0: +// Assume that *out is large enough to contain the output. +// Theoretically it should be 4/3 the length of src. +const uint8_t *c = (const uint8_t *)src; +uint8_t *o = (uint8_t *)out; + +// Use local temporaries to avoid cache thrashing: +size_t outl = 0; +struct plain32_base64_state st; +st.bytes = state->bytes; +st.carry = state->carry; + +// Turn three bytes into four 6-bit numbers: +// in[0] = 00111111 +// in[1] = 00112222 +// in[2] = 00222233 +// in[3] = 00333333 + +// Duff's device, a for() loop inside a switch() statement. Legal! +switch (st.bytes) +{ + for (;;) + { + case 0: diff --git a/contrib/libs/base64/plain32/enc_tail.c b/contrib/libs/base64/plain32/enc_tail.c index f5a8c2756a..5840068264 100644 --- a/contrib/libs/base64/plain32/enc_tail.c +++ b/contrib/libs/base64/plain32/enc_tail.c @@ -1,28 +1,28 @@ - if (srclen-- == 0) { - break; - } - *o++ = plain32_base64_table_enc[*c >> 2]; - st.carry = (*c++ << 4) & 0x30; - st.bytes++; - outl += 1; - - case 1: if (srclen-- == 0) { - break; - } - *o++ = plain32_base64_table_enc[st.carry | (*c >> 4)]; - st.carry = (*c++ << 2) & 0x3C; - st.bytes++; - outl += 1; - - case 2: if (srclen-- == 0) { - break; - } - *o++ = plain32_base64_table_enc[st.carry | (*c >> 6)]; - *o++ = plain32_base64_table_enc[*c++ & 0x3F]; - st.bytes = 0; - outl += 2; - } -} -state->bytes = st.bytes; -state->carry = st.carry; -*outlen = outl; + if (srclen-- == 0) { + break; + } + *o++ = plain32_base64_table_enc[*c >> 2]; + st.carry = (*c++ << 4) & 0x30; + st.bytes++; + outl += 1; + + case 1: if (srclen-- == 0) { + break; + } + *o++ = plain32_base64_table_enc[st.carry | (*c >> 4)]; + st.carry = (*c++ << 2) & 0x3C; + st.bytes++; + outl += 1; + + case 2: if (srclen-- == 0) { + break; + } + *o++ = plain32_base64_table_enc[st.carry | (*c >> 6)]; + *o++ = plain32_base64_table_enc[*c++ & 0x3F]; + st.bytes = 0; + outl += 2; + } +} +state->bytes = st.bytes; +state->carry = st.carry; +*outlen = outl; diff --git a/contrib/libs/base64/plain32/enc_uint32.c b/contrib/libs/base64/plain32/enc_uint32.c index a22f599ce4..1dbe5fbe53 100644 --- a/contrib/libs/base64/plain32/enc_uint32.c +++ b/contrib/libs/base64/plain32/enc_uint32.c @@ -1,27 +1,27 @@ -// If we have 32-bit ints, pick off 3 bytes at a time for as long as we can, -// but ensure that there are at least 4 bytes available to avoid segfaulting: -while (srclen >= 4) -{ - // Load string: +// If we have 32-bit ints, pick off 3 bytes at a time for as long as we can, +// but ensure that there are at least 4 bytes available to avoid segfaulting: +while (srclen >= 4) +{ + // Load string: //uint32_t str = *(uint32_t *)c; uint32_t str; - + memcpy(&str, c, sizeof(str)); - // Reorder to 32-bit big-endian, if not already in that format. The - // workset must be in big-endian, otherwise the shifted bits do not - // carry over properly among adjacent bytes: - str = cpu_to_be32(str); - - // Shift input by 6 bytes each round and mask in only the lower 6 bits; - // look up the character in the Base64 encoding table and write it to - // the output location: - *o++ = plain32_base64_table_enc[(str >> 26) & 0x3F]; - *o++ = plain32_base64_table_enc[(str >> 20) & 0x3F]; - *o++ = plain32_base64_table_enc[(str >> 14) & 0x3F]; - *o++ = plain32_base64_table_enc[(str >> 8) & 0x3F]; - - c += 3; // 3 bytes of input - outl += 4; // 4 bytes of output - srclen -= 3; -} + // Reorder to 32-bit big-endian, if not already in that format. The + // workset must be in big-endian, otherwise the shifted bits do not + // carry over properly among adjacent bytes: + str = cpu_to_be32(str); + + // Shift input by 6 bytes each round and mask in only the lower 6 bits; + // look up the character in the Base64 encoding table and write it to + // the output location: + *o++ = plain32_base64_table_enc[(str >> 26) & 0x3F]; + *o++ = plain32_base64_table_enc[(str >> 20) & 0x3F]; + *o++ = plain32_base64_table_enc[(str >> 14) & 0x3F]; + *o++ = plain32_base64_table_enc[(str >> 8) & 0x3F]; + + c += 3; // 3 bytes of input + outl += 4; // 4 bytes of output + srclen -= 3; +} diff --git a/contrib/libs/base64/plain32/lib.c b/contrib/libs/base64/plain32/lib.c index d42ef50c36..9eb2e705b4 100644 --- a/contrib/libs/base64/plain32/lib.c +++ b/contrib/libs/base64/plain32/lib.c @@ -1,121 +1,121 @@ -#include <stdint.h> -#include <stddef.h> - -#include "libbase64.h" -#include "codecs.h" - -const uint8_t -plain32_base64_table_enc[] = - "ABCDEFGHIJKLMNOPQRSTUVWXYZ" - "abcdefghijklmnopqrstuvwxyz" - "0123456789+/"; - -// In the lookup table below, note that the value for '=' (character 61) is -// 254, not 255. This character is used for in-band signaling of the end of -// the datastream, and we will use that later. The characters A-Z, a-z, 0-9 -// and + / are mapped to their "decoded" values. The other bytes all map to -// the value 255, which flags them as "invalid input". - -const uint8_t -plain32_base64_table_dec[] = -{ - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 0..15 - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 16..31 - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62, 254, 62, 255, 63, // 32..47 - 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, 255, 254, 255, 255, // 48..63 - 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, // 64..79 - 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 63, // 80..95 - 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, // 96..111 - 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 255, 255, 255, 255, 255, // 112..127 - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 128..143 - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, -}; - -void -plain32_base64_stream_encode_init (struct plain32_base64_state *state) -{ - state->eof = 0; - state->bytes = 0; - state->carry = 0; -} - -void -plain32_base64_stream_encode_final - ( struct plain32_base64_state *state - , char *out - , size_t *outlen - ) -{ - uint8_t *o = (uint8_t *)out; - - if (state->bytes == 1) { - *o++ = plain32_base64_table_enc[state->carry]; - *o++ = '='; - *o++ = '='; - *outlen = 3; - return; - } - if (state->bytes == 2) { - *o++ = plain32_base64_table_enc[state->carry]; - *o++ = '='; - *outlen = 2; - return; - } - *outlen = 0; -} - -void -plain32_base64_stream_decode_init (struct plain32_base64_state *state) -{ - state->eof = 0; - state->bytes = 0; - state->carry = 0; -} - -void -plain32_base64_encode - ( const char *src - , size_t srclen - , char *out - , size_t *outlen - ) -{ - size_t s; - size_t t; - struct plain32_base64_state state; - - // Init the stream reader: - plain32_base64_stream_encode_init(&state); - - // Feed the whole string to the stream reader: - plain32_base64_stream_encode(&state, src, srclen, out, &s); - - // Finalize the stream by writing trailer if any: - plain32_base64_stream_encode_final(&state, out + s, &t); - - // Final output length is stream length plus tail: - *outlen = s + t; -} - -int -plain32_base64_decode - ( const char *src - , size_t srclen - , char *out - , size_t *outlen - ) -{ - struct plain32_base64_state state; - - // Init the stream reader: - plain32_base64_stream_decode_init(&state); - - // Feed the whole string to the stream reader: - return plain32_base64_stream_decode(&state, src, srclen, out, outlen); -} +#include <stdint.h> +#include <stddef.h> + +#include "libbase64.h" +#include "codecs.h" + +const uint8_t +plain32_base64_table_enc[] = + "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "0123456789+/"; + +// In the lookup table below, note that the value for '=' (character 61) is +// 254, not 255. This character is used for in-band signaling of the end of +// the datastream, and we will use that later. The characters A-Z, a-z, 0-9 +// and + / are mapped to their "decoded" values. The other bytes all map to +// the value 255, which flags them as "invalid input". + +const uint8_t +plain32_base64_table_dec[] = +{ + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 0..15 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 16..31 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 62, 254, 62, 255, 63, // 32..47 + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, 255, 254, 255, 255, // 48..63 + 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, // 64..79 + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 63, // 80..95 + 255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, // 96..111 + 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 255, 255, 255, 255, 255, // 112..127 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, // 128..143 + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, + 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +}; + +void +plain32_base64_stream_encode_init (struct plain32_base64_state *state) +{ + state->eof = 0; + state->bytes = 0; + state->carry = 0; +} + +void +plain32_base64_stream_encode_final + ( struct plain32_base64_state *state + , char *out + , size_t *outlen + ) +{ + uint8_t *o = (uint8_t *)out; + + if (state->bytes == 1) { + *o++ = plain32_base64_table_enc[state->carry]; + *o++ = '='; + *o++ = '='; + *outlen = 3; + return; + } + if (state->bytes == 2) { + *o++ = plain32_base64_table_enc[state->carry]; + *o++ = '='; + *outlen = 2; + return; + } + *outlen = 0; +} + +void +plain32_base64_stream_decode_init (struct plain32_base64_state *state) +{ + state->eof = 0; + state->bytes = 0; + state->carry = 0; +} + +void +plain32_base64_encode + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + ) +{ + size_t s; + size_t t; + struct plain32_base64_state state; + + // Init the stream reader: + plain32_base64_stream_encode_init(&state); + + // Feed the whole string to the stream reader: + plain32_base64_stream_encode(&state, src, srclen, out, &s); + + // Finalize the stream by writing trailer if any: + plain32_base64_stream_encode_final(&state, out + s, &t); + + // Final output length is stream length plus tail: + *outlen = s + t; +} + +int +plain32_base64_decode + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + ) +{ + struct plain32_base64_state state; + + // Init the stream reader: + plain32_base64_stream_decode_init(&state); + + // Feed the whole string to the stream reader: + return plain32_base64_stream_decode(&state, src, srclen, out, outlen); +} diff --git a/contrib/libs/base64/plain32/libbase64.h b/contrib/libs/base64/plain32/libbase64.h index 2c2ec175e0..db54ea4fc2 100644 --- a/contrib/libs/base64/plain32/libbase64.h +++ b/contrib/libs/base64/plain32/libbase64.h @@ -1,89 +1,89 @@ -#pragma once - -#ifdef __cplusplus -extern "C" { -#endif - -struct plain32_base64_state { - int eof; - int bytes; - unsigned char carry; -}; - -/* Wrapper function to encode a plain string of given length. Output is written - * to *out without trailing zero. Output length in bytes is written to *outlen. - * The buffer in `out` has been allocated by the caller and is at least 4/3 the - * size of the input. See above for `flags`; set to 0 for default operation: */ -void plain32_base64_encode - ( const char *src - , size_t srclen - , char *out - , size_t *outlen - ) ; - -/* Call this before calling base64_stream_encode() to init the state. See above - * for `flags`; set to 0 for default operation: */ -void plain32_base64_stream_encode_init - ( struct plain32_base64_state *state - ) ; - -/* Encodes the block of data of given length at `src`, into the buffer at - * `out`. Caller is responsible for allocating a large enough out-buffer; it - * must be at least 4/3 the size of the in-buffer, but take some margin. Places - * the number of new bytes written into `outlen` (which is set to zero when the - * function starts). Does not zero-terminate or finalize the output. */ -void plain32_base64_stream_encode - ( struct plain32_base64_state *state - , const char *src - , size_t srclen - , char *out - , size_t *outlen - ) ; - -/* Finalizes the output begun by previous calls to `base64_stream_encode()`. - * Adds the required end-of-stream markers if appropriate. `outlen` is modified - * and will contain the number of new bytes written at `out` (which will quite - * often be zero). */ -void plain32_base64_stream_encode_final - ( struct plain32_base64_state *state - , char *out - , size_t *outlen - ) ; - -/* Wrapper function to decode a plain string of given length. Output is written - * to *out without trailing zero. Output length in bytes is written to *outlen. - * The buffer in `out` has been allocated by the caller and is at least 3/4 the - * size of the input. See above for `flags`, set to 0 for default operation: */ -int plain32_base64_decode - ( const char *src - , size_t srclen - , char *out - , size_t *outlen - ) ; - -/* Call this before calling base64_stream_decode() to init the state. See above - * for `flags`; set to 0 for default operation: */ -void plain32_base64_stream_decode_init - ( struct plain32_base64_state *state - ) ; - -/* Decodes the block of data of given length at `src`, into the buffer at - * `out`. Caller is responsible for allocating a large enough out-buffer; it - * must be at least 3/4 the size of the in-buffer, but take some margin. Places - * the number of new bytes written into `outlen` (which is set to zero when the - * function starts). Does not zero-terminate the output. Returns 1 if all is - * well, and 0 if a decoding error was found, such as an invalid character. - * Returns -1 if the chosen codec is not included in the current build. Used by - * the test harness to check whether a codec is available for testing. */ -int plain32_base64_stream_decode - ( struct plain32_base64_state *state - , const char *src - , size_t srclen - , char *out - , size_t *outlen - ) ; - -#ifdef __cplusplus -} -#endif - +#pragma once + +#ifdef __cplusplus +extern "C" { +#endif + +struct plain32_base64_state { + int eof; + int bytes; + unsigned char carry; +}; + +/* Wrapper function to encode a plain string of given length. Output is written + * to *out without trailing zero. Output length in bytes is written to *outlen. + * The buffer in `out` has been allocated by the caller and is at least 4/3 the + * size of the input. See above for `flags`; set to 0 for default operation: */ +void plain32_base64_encode + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + ) ; + +/* Call this before calling base64_stream_encode() to init the state. See above + * for `flags`; set to 0 for default operation: */ +void plain32_base64_stream_encode_init + ( struct plain32_base64_state *state + ) ; + +/* Encodes the block of data of given length at `src`, into the buffer at + * `out`. Caller is responsible for allocating a large enough out-buffer; it + * must be at least 4/3 the size of the in-buffer, but take some margin. Places + * the number of new bytes written into `outlen` (which is set to zero when the + * function starts). Does not zero-terminate or finalize the output. */ +void plain32_base64_stream_encode + ( struct plain32_base64_state *state + , const char *src + , size_t srclen + , char *out + , size_t *outlen + ) ; + +/* Finalizes the output begun by previous calls to `base64_stream_encode()`. + * Adds the required end-of-stream markers if appropriate. `outlen` is modified + * and will contain the number of new bytes written at `out` (which will quite + * often be zero). */ +void plain32_base64_stream_encode_final + ( struct plain32_base64_state *state + , char *out + , size_t *outlen + ) ; + +/* Wrapper function to decode a plain string of given length. Output is written + * to *out without trailing zero. Output length in bytes is written to *outlen. + * The buffer in `out` has been allocated by the caller and is at least 3/4 the + * size of the input. See above for `flags`, set to 0 for default operation: */ +int plain32_base64_decode + ( const char *src + , size_t srclen + , char *out + , size_t *outlen + ) ; + +/* Call this before calling base64_stream_decode() to init the state. See above + * for `flags`; set to 0 for default operation: */ +void plain32_base64_stream_decode_init + ( struct plain32_base64_state *state + ) ; + +/* Decodes the block of data of given length at `src`, into the buffer at + * `out`. Caller is responsible for allocating a large enough out-buffer; it + * must be at least 3/4 the size of the in-buffer, but take some margin. Places + * the number of new bytes written into `outlen` (which is set to zero when the + * function starts). Does not zero-terminate the output. Returns 1 if all is + * well, and 0 if a decoding error was found, such as an invalid character. + * Returns -1 if the chosen codec is not included in the current build. Used by + * the test harness to check whether a codec is available for testing. */ +int plain32_base64_stream_decode + ( struct plain32_base64_state *state + , const char *src + , size_t srclen + , char *out + , size_t *outlen + ) ; + +#ifdef __cplusplus +} +#endif + diff --git a/contrib/libs/base64/plain32/ya.make b/contrib/libs/base64/plain32/ya.make index 2055f8f513..1f5a9ad204 100644 --- a/contrib/libs/base64/plain32/ya.make +++ b/contrib/libs/base64/plain32/ya.make @@ -1,11 +1,11 @@ -OWNER( - yazevnul +OWNER( + yazevnul g:contrib g:cpp-contrib -) - -LIBRARY() - +) + +LIBRARY() + LICENSE( BSD-2-Clause AND MIT @@ -13,15 +13,15 @@ LICENSE( LICENSE_TEXTS(.yandex_meta/licenses.list.txt) -NO_UTIL() - -SRCS( - codec_plain.c - lib.c -) - +NO_UTIL() + +SRCS( + codec_plain.c + lib.c +) + IF (OS_LINUX OR OS_DARWIN) CONLYFLAGS(-std=c11) -ENDIF() - -END() +ENDIF() + +END() |