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-rw-r--r--thirdparty/openssl/crypto/evp/encode.c460
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diff --git a/thirdparty/openssl/crypto/evp/encode.c b/thirdparty/openssl/crypto/evp/encode.c
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--- a/thirdparty/openssl/crypto/evp/encode.c
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-/* crypto/evp/encode.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
-#include <stdio.h>
-#include <limits.h>
-#include "cryptlib.h"
-#include <openssl/evp.h>
-
-static unsigned char conv_ascii2bin(unsigned char a);
-#ifndef CHARSET_EBCDIC
-# define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f])
-#else
-/*
- * We assume that PEM encoded files are EBCDIC files (i.e., printable text
- * files). Convert them here while decoding. When encoding, output is EBCDIC
- * (text) format again. (No need for conversion in the conv_bin2ascii macro,
- * as the underlying textstring data_bin2ascii[] is already EBCDIC)
- */
-# define conv_bin2ascii(a) (data_bin2ascii[(a)&0x3f])
-#endif
-
-/*-
- * 64 char lines
- * pad input with 0
- * left over chars are set to =
- * 1 byte => xx==
- * 2 bytes => xxx=
- * 3 bytes => xxxx
- */
-#define BIN_PER_LINE (64/4*3)
-#define CHUNKS_PER_LINE (64/4)
-#define CHAR_PER_LINE (64+1)
-
-static const unsigned char data_bin2ascii[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ\
-abcdefghijklmnopqrstuvwxyz0123456789+/";
-
-/*-
- * 0xF0 is a EOLN
- * 0xF1 is ignore but next needs to be 0xF0 (for \r\n processing).
- * 0xF2 is EOF
- * 0xE0 is ignore at start of line.
- * 0xFF is error
- */
-
-#define B64_EOLN 0xF0
-#define B64_CR 0xF1
-#define B64_EOF 0xF2
-#define B64_WS 0xE0
-#define B64_ERROR 0xFF
-#define B64_NOT_BASE64(a) (((a)|0x13) == 0xF3)
-#define B64_BASE64(a) !B64_NOT_BASE64(a)
-
-static const unsigned char data_ascii2bin[128] = {
- 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xE0, 0xF0, 0xFF, 0xFF, 0xF1, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
- 0xE0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
- 0xFF, 0xFF, 0xFF, 0x3E, 0xFF, 0xF2, 0xFF, 0x3F,
- 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B,
- 0x3C, 0x3D, 0xFF, 0xFF, 0xFF, 0x00, 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,
-};
-
-#ifndef CHARSET_EBCDIC
-static unsigned char conv_ascii2bin(unsigned char a)
-{
- if (a & 0x80)
- return B64_ERROR;
- return data_ascii2bin[a];
-}
-#else
-static unsigned char conv_ascii2bin(unsigned char a)
-{
- a = os_toascii[a];
- if (a & 0x80)
- return B64_ERROR;
- return data_ascii2bin[a];
-}
-#endif
-
-void EVP_EncodeInit(EVP_ENCODE_CTX *ctx)
-{
- ctx->length = 48;
- ctx->num = 0;
- ctx->line_num = 0;
-}
-
-void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
- const unsigned char *in, int inl)
-{
- int i, j;
- size_t total = 0;
-
- *outl = 0;
- if (inl <= 0)
- return;
- OPENSSL_assert(ctx->length <= (int)sizeof(ctx->enc_data));
- if (ctx->length - ctx->num > inl) {
- memcpy(&(ctx->enc_data[ctx->num]), in, inl);
- ctx->num += inl;
- return;
- }
- if (ctx->num != 0) {
- i = ctx->length - ctx->num;
- memcpy(&(ctx->enc_data[ctx->num]), in, i);
- in += i;
- inl -= i;
- j = EVP_EncodeBlock(out, ctx->enc_data, ctx->length);
- ctx->num = 0;
- out += j;
- *(out++) = '\n';
- *out = '\0';
- total = j + 1;
- }
- while (inl >= ctx->length && total <= INT_MAX) {
- j = EVP_EncodeBlock(out, in, ctx->length);
- in += ctx->length;
- inl -= ctx->length;
- out += j;
- *(out++) = '\n';
- *out = '\0';
- total += j + 1;
- }
- if (total > INT_MAX) {
- /* Too much output data! */
- *outl = 0;
- return;
- }
- if (inl != 0)
- memcpy(&(ctx->enc_data[0]), in, inl);
- ctx->num = inl;
- *outl = total;
-}
-
-void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
-{
- unsigned int ret = 0;
-
- if (ctx->num != 0) {
- ret = EVP_EncodeBlock(out, ctx->enc_data, ctx->num);
- out[ret++] = '\n';
- out[ret] = '\0';
- ctx->num = 0;
- }
- *outl = ret;
-}
-
-int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int dlen)
-{
- int i, ret = 0;
- unsigned long l;
-
- for (i = dlen; i > 0; i -= 3) {
- if (i >= 3) {
- l = (((unsigned long)f[0]) << 16L) |
- (((unsigned long)f[1]) << 8L) | f[2];
- *(t++) = conv_bin2ascii(l >> 18L);
- *(t++) = conv_bin2ascii(l >> 12L);
- *(t++) = conv_bin2ascii(l >> 6L);
- *(t++) = conv_bin2ascii(l);
- } else {
- l = ((unsigned long)f[0]) << 16L;
- if (i == 2)
- l |= ((unsigned long)f[1] << 8L);
-
- *(t++) = conv_bin2ascii(l >> 18L);
- *(t++) = conv_bin2ascii(l >> 12L);
- *(t++) = (i == 1) ? '=' : conv_bin2ascii(l >> 6L);
- *(t++) = '=';
- }
- ret += 4;
- f += 3;
- }
-
- *t = '\0';
- return (ret);
-}
-
-void EVP_DecodeInit(EVP_ENCODE_CTX *ctx)
-{
- /* Only ctx->num is used during decoding. */
- ctx->num = 0;
- ctx->length = 0;
- ctx->line_num = 0;
- ctx->expect_nl = 0;
-}
-
-/*-
- * -1 for error
- * 0 for last line
- * 1 for full line
- *
- * Note: even though EVP_DecodeUpdate attempts to detect and report end of
- * content, the context doesn't currently remember it and will accept more data
- * in the next call. Therefore, the caller is responsible for checking and
- * rejecting a 0 return value in the middle of content.
- *
- * Note: even though EVP_DecodeUpdate has historically tried to detect end of
- * content based on line length, this has never worked properly. Therefore,
- * we now return 0 when one of the following is true:
- * - Padding or B64_EOF was detected and the last block is complete.
- * - Input has zero-length.
- * -1 is returned if:
- * - Invalid characters are detected.
- * - There is extra trailing padding, or data after padding.
- * - B64_EOF is detected after an incomplete base64 block.
- */
-int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
- const unsigned char *in, int inl)
-{
- int seof = 0, eof = 0, rv = -1, ret = 0, i, v, tmp, n, decoded_len;
- unsigned char *d;
-
- n = ctx->num;
- d = ctx->enc_data;
-
- if (n > 0 && d[n - 1] == '=') {
- eof++;
- if (n > 1 && d[n - 2] == '=')
- eof++;
- }
-
- /* Legacy behaviour: an empty input chunk signals end of input. */
- if (inl == 0) {
- rv = 0;
- goto end;
- }
-
- for (i = 0; i < inl; i++) {
- tmp = *(in++);
- v = conv_ascii2bin(tmp);
- if (v == B64_ERROR) {
- rv = -1;
- goto end;
- }
-
- if (tmp == '=') {
- eof++;
- } else if (eof > 0 && B64_BASE64(v)) {
- /* More data after padding. */
- rv = -1;
- goto end;
- }
-
- if (eof > 2) {
- rv = -1;
- goto end;
- }
-
- if (v == B64_EOF) {
- seof = 1;
- goto tail;
- }
-
- /* Only save valid base64 characters. */
- if (B64_BASE64(v)) {
- if (n >= 64) {
- /*
- * We increment n once per loop, and empty the buffer as soon as
- * we reach 64 characters, so this can only happen if someone's
- * manually messed with the ctx. Refuse to write any more data.
- */
- rv = -1;
- goto end;
- }
- OPENSSL_assert(n < (int)sizeof(ctx->enc_data));
- d[n++] = tmp;
- }
-
- if (n == 64) {
- decoded_len = EVP_DecodeBlock(out, d, n);
- n = 0;
- if (decoded_len < 0 || eof > decoded_len) {
- rv = -1;
- goto end;
- }
- ret += decoded_len - eof;
- out += decoded_len - eof;
- }
- }
-
- /*
- * Legacy behaviour: if the current line is a full base64-block (i.e., has
- * 0 mod 4 base64 characters), it is processed immediately. We keep this
- * behaviour as applications may not be calling EVP_DecodeFinal properly.
- */
-tail:
- if (n > 0) {
- if ((n & 3) == 0) {
- decoded_len = EVP_DecodeBlock(out, d, n);
- n = 0;
- if (decoded_len < 0 || eof > decoded_len) {
- rv = -1;
- goto end;
- }
- ret += (decoded_len - eof);
- } else if (seof) {
- /* EOF in the middle of a base64 block. */
- rv = -1;
- goto end;
- }
- }
-
- rv = seof || (n == 0 && eof) ? 0 : 1;
-end:
- /* Legacy behaviour. This should probably rather be zeroed on error. */
- *outl = ret;
- ctx->num = n;
- return (rv);
-}
-
-int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n)
-{
- int i, ret = 0, a, b, c, d;
- unsigned long l;
-
- /* trim white space from the start of the line. */
- while ((conv_ascii2bin(*f) == B64_WS) && (n > 0)) {
- f++;
- n--;
- }
-
- /*
- * strip off stuff at the end of the line ascii2bin values B64_WS,
- * B64_EOLN, B64_EOLN and B64_EOF
- */
- while ((n > 3) && (B64_NOT_BASE64(conv_ascii2bin(f[n - 1]))))
- n--;
-
- if (n % 4 != 0)
- return (-1);
-
- for (i = 0; i < n; i += 4) {
- a = conv_ascii2bin(*(f++));
- b = conv_ascii2bin(*(f++));
- c = conv_ascii2bin(*(f++));
- d = conv_ascii2bin(*(f++));
- if ((a & 0x80) || (b & 0x80) || (c & 0x80) || (d & 0x80))
- return (-1);
- l = ((((unsigned long)a) << 18L) |
- (((unsigned long)b) << 12L) |
- (((unsigned long)c) << 6L) | (((unsigned long)d)));
- *(t++) = (unsigned char)(l >> 16L) & 0xff;
- *(t++) = (unsigned char)(l >> 8L) & 0xff;
- *(t++) = (unsigned char)(l) & 0xff;
- ret += 3;
- }
- return (ret);
-}
-
-int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl)
-{
- int i;
-
- *outl = 0;
- if (ctx->num != 0) {
- i = EVP_DecodeBlock(out, ctx->enc_data, ctx->num);
- if (i < 0)
- return (-1);
- ctx->num = 0;
- *outl = i;
- return (1);
- } else
- return (1);
-}
-
-#ifdef undef
-int EVP_DecodeValid(unsigned char *buf, int len)
-{
- int i, num = 0, bad = 0;
-
- if (len == 0)
- return (-1);
- while (conv_ascii2bin(*buf) == B64_WS) {
- buf++;
- len--;
- if (len == 0)
- return (-1);
- }
-
- for (i = len; i >= 4; i -= 4) {
- if ((conv_ascii2bin(buf[0]) >= 0x40) ||
- (conv_ascii2bin(buf[1]) >= 0x40) ||
- (conv_ascii2bin(buf[2]) >= 0x40) ||
- (conv_ascii2bin(buf[3]) >= 0x40))
- return (-1);
- buf += 4;
- num += 1 + (buf[2] != '=') + (buf[3] != '=');
- }
- if ((i == 1) && (conv_ascii2bin(buf[0]) == B64_EOLN))
- return (num);
- if ((i == 2) && (conv_ascii2bin(buf[0]) == B64_EOLN) &&
- (conv_ascii2bin(buf[0]) == B64_EOLN))
- return (num);
- return (1);
-}
-#endif
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