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Imported Upstream version 4.8.0.309

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Former-commit-id: 5f9c6ae75f295e057a7d2971f3a6df4656fa8850
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2016-11-10 13:04:39 +00:00
parent ee1447783b
commit 94b2861243
4912 changed files with 390737 additions and 49310 deletions
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22
external/boringssl/crypto/base64/CMakeLists.txt vendored Normal file
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@@ -0,0 +1,22 @@
include_directories(../../include)
add_library(
base64
OBJECT
base64.c
)
if(ENABLE_TESTS)
add_executable(
base64_test
base64_test.cc
$<TARGET_OBJECTS:test_support>
)
target_link_libraries(base64_test crypto)
add_dependencies(all_tests base64_test)
endif()

438
external/boringssl/crypto/base64/base64.c vendored Normal file
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@@ -0,0 +1,438 @@
/* 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 <openssl/base64.h>
#include <assert.h>
#include <limits.h>
#include <string.h>
#include <openssl/type_check.h>
/* Encoding. */
static const unsigned char data_bin2ascii[65] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
#define conv_bin2ascii(a) (data_bin2ascii[(a) & 0x3f])
OPENSSL_COMPILE_ASSERT(sizeof(((EVP_ENCODE_CTX *)(NULL))->data) % 3 == 0,
data_length_must_be_multiple_of_base64_chunk_size);
int EVP_EncodedLength(size_t *out_len, size_t len) {
if (len + 2 < len) {
return 0;
}
len += 2;
len /= 3;
if (((len << 2) >> 2) != len) {
return 0;
}
len <<= 2;
if (len + 1 < len) {
return 0;
}
len++;
*out_len = len;
return 1;
}
void EVP_EncodeInit(EVP_ENCODE_CTX *ctx) {
memset(ctx, 0, sizeof(EVP_ENCODE_CTX));
}
void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
const uint8_t *in, size_t in_len) {
size_t total = 0;
*out_len = 0;
if (in_len == 0) {
return;
}
assert(ctx->data_used < sizeof(ctx->data));
if (sizeof(ctx->data) - ctx->data_used > in_len) {
memcpy(&ctx->data[ctx->data_used], in, in_len);
ctx->data_used += in_len;
return;
}
if (ctx->data_used != 0) {
const size_t todo = sizeof(ctx->data) - ctx->data_used;
memcpy(&ctx->data[ctx->data_used], in, todo);
in += todo;
in_len -= todo;
size_t encoded = EVP_EncodeBlock(out, ctx->data, sizeof(ctx->data));
ctx->data_used = 0;
out += encoded;
*(out++) = '\n';
*out = '\0';
total = encoded + 1;
}
while (in_len >= sizeof(ctx->data)) {
size_t encoded = EVP_EncodeBlock(out, in, sizeof(ctx->data));
in += sizeof(ctx->data);
in_len -= sizeof(ctx->data);
out += encoded;
*(out++) = '\n';
*out = '\0';
if (total + encoded + 1 < total) {
*out_len = 0;
return;
}
total += encoded + 1;
}
if (in_len != 0) {
memcpy(ctx->data, in, in_len);
}
ctx->data_used = in_len;
if (total > INT_MAX) {
/* We cannot signal an error, but we can at least avoid making *out_len
* negative. */
total = 0;
}
*out_len = total;
}
void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {
if (ctx->data_used == 0) {
*out_len = 0;
return;
}
size_t encoded = EVP_EncodeBlock(out, ctx->data, ctx->data_used);
out[encoded++] = '\n';
out[encoded] = '\0';
ctx->data_used = 0;
*out_len = encoded;
}
size_t EVP_EncodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {
uint32_t l;
size_t remaining = src_len, ret = 0;
while (remaining) {
if (remaining >= 3) {
l = (((uint32_t)src[0]) << 16L) | (((uint32_t)src[1]) << 8L) | src[2];
*(dst++) = conv_bin2ascii(l >> 18L);
*(dst++) = conv_bin2ascii(l >> 12L);
*(dst++) = conv_bin2ascii(l >> 6L);
*(dst++) = conv_bin2ascii(l);
remaining -= 3;
} else {
l = ((uint32_t)src[0]) << 16L;
if (remaining == 2) {
l |= ((uint32_t)src[1] << 8L);
}
*(dst++) = conv_bin2ascii(l >> 18L);
*(dst++) = conv_bin2ascii(l >> 12L);
*(dst++) = (remaining == 1) ? '=' : conv_bin2ascii(l >> 6L);
*(dst++) = '=';
remaining = 0;
}
ret += 4;
src += 3;
}
*dst = '\0';
return ret;
}
/* Decoding. */
int EVP_DecodedLength(size_t *out_len, size_t len) {
if (len % 4 != 0) {
return 0;
}
*out_len = (len / 4) * 3;
return 1;
}
void EVP_DecodeInit(EVP_ENCODE_CTX *ctx) {
memset(ctx, 0, sizeof(EVP_ENCODE_CTX));
}
/* kBase64ASCIIToBinData maps characters (c < 128) to their base64 value, or
* else 0xff if they are invalid. As a special case, the padding character
* ('=') is mapped to zero. */
static const uint8_t kBase64ASCIIToBinData[128] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0xff, 0xff,
0xff, 0xff, 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, 0xff, 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,
};
static uint8_t base64_ascii_to_bin(uint8_t a) {
if (a >= 128) {
return 0xFF;
}
return kBase64ASCIIToBinData[a];
}
/* base64_decode_quad decodes a single “quad” (i.e. four characters) of base64
* data and writes up to three bytes to |out|. It sets |*out_num_bytes| to the
* number of bytes written, which will be less than three if the quad ended
* with padding. It returns one on success or zero on error. */
static int base64_decode_quad(uint8_t *out, size_t *out_num_bytes,
const uint8_t *in) {
const uint8_t a = base64_ascii_to_bin(in[0]);
const uint8_t b = base64_ascii_to_bin(in[1]);
const uint8_t c = base64_ascii_to_bin(in[2]);
const uint8_t d = base64_ascii_to_bin(in[3]);
if (a == 0xff || b == 0xff || c == 0xff || d == 0xff) {
return 0;
}
const uint32_t v = ((uint32_t)a) << 18 | ((uint32_t)b) << 12 |
((uint32_t)c) << 6 | (uint32_t)d;
const unsigned padding_pattern = (in[0] == '=') << 3 |
(in[1] == '=') << 2 |
(in[2] == '=') << 1 |
(in[3] == '=');
switch (padding_pattern) {
case 0:
/* The common case of no padding. */
*out_num_bytes = 3;
out[0] = v >> 16;
out[1] = v >> 8;
out[2] = v;
break;
case 1: /* xxx= */
*out_num_bytes = 2;
out[0] = v >> 16;
out[1] = v >> 8;
break;
case 3: /* xx== */
*out_num_bytes = 1;
out[0] = v >> 16;
break;
default:
return 0;
}
return 1;
}
int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len,
const uint8_t *in, size_t in_len) {
*out_len = 0;
if (ctx->error_encountered) {
return -1;
}
size_t bytes_out = 0, i;
for (i = 0; i < in_len; i++) {
const char c = in[i];
switch (c) {
case ' ':
case '\t':
case '\r':
case '\n':
continue;
}
if (base64_ascii_to_bin(c) == 0xff || ctx->eof_seen) {
ctx->error_encountered = 1;
return -1;
}
ctx->data[ctx->data_used++] = c;
if (ctx->data_used == 4) {
size_t num_bytes_resulting;
if (!base64_decode_quad(out, &num_bytes_resulting, ctx->data)) {
ctx->error_encountered = 1;
return -1;
}
ctx->data_used = 0;
bytes_out += num_bytes_resulting;
out += num_bytes_resulting;
if (num_bytes_resulting < 3) {
ctx->eof_seen = 1;
}
}
}
if (bytes_out > INT_MAX) {
ctx->error_encountered = 1;
*out_len = 0;
return -1;
}
*out_len = bytes_out;
if (ctx->eof_seen) {
return 0;
}
return 1;
}
int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, uint8_t *out, int *out_len) {
*out_len = 0;
if (ctx->error_encountered || ctx->data_used != 0) {
return -1;
}
return 1;
}
int EVP_DecodeBase64(uint8_t *out, size_t *out_len, size_t max_out,
const uint8_t *in, size_t in_len) {
*out_len = 0;
if (in_len % 4 != 0) {
return 0;
}
size_t max_len;
if (!EVP_DecodedLength(&max_len, in_len) ||
max_out < max_len) {
return 0;
}
size_t i, bytes_out = 0;
for (i = 0; i < in_len; i += 4) {
size_t num_bytes_resulting;
if (!base64_decode_quad(out, &num_bytes_resulting, &in[i])) {
return 0;
}
bytes_out += num_bytes_resulting;
out += num_bytes_resulting;
if (num_bytes_resulting != 3 && i != in_len - 4) {
return 0;
}
}
*out_len = bytes_out;
return 1;
}
int EVP_DecodeBlock(uint8_t *dst, const uint8_t *src, size_t src_len) {
/* Trim spaces and tabs from the beginning of the input. */
while (src_len > 0) {
if (src[0] != ' ' && src[0] != '\t') {
break;
}
src++;
src_len--;
}
/* Trim newlines, spaces and tabs from the end of the line. */
while (src_len > 0) {
switch (src[src_len-1]) {
case ' ':
case '\t':
case '\r':
case '\n':
src_len--;
continue;
}
break;
}
size_t dst_len;
if (!EVP_DecodedLength(&dst_len, src_len) ||
dst_len > INT_MAX ||
!EVP_DecodeBase64(dst, &dst_len, dst_len, src, src_len)) {
return -1;
}
/* EVP_DecodeBlock does not take padding into account, so put the
* NULs back in... so the caller can strip them back out. */
while (dst_len % 3 != 0) {
dst[dst_len++] = '\0';
}
assert(dst_len <= INT_MAX);
return dst_len;
}

393
external/boringssl/crypto/base64/base64_test.cc vendored Normal file
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/* Copyright (c) 2014, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <stdio.h>
#include <string.h>
#include <string>
#include <vector>
#include <openssl/base64.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
enum encoding_relation {
// canonical indicates that the encoding is the expected encoding of the
// input.
canonical,
// valid indicates that the encoding is /a/ valid encoding of the input, but
// need not be the canonical one.
valid,
// invalid indicates that the encoded data is valid.
invalid,
};
struct TestVector {
enum encoding_relation relation;
const char *decoded;
const char *encoded;
};
// Test vectors from RFC 4648.
static const TestVector kTestVectors[] = {
{canonical, "", ""},
{canonical, "f", "Zg==\n"},
{canonical, "fo", "Zm8=\n"},
{canonical, "foo", "Zm9v\n"},
{canonical, "foob", "Zm9vYg==\n"},
{canonical, "fooba", "Zm9vYmE=\n"},
{canonical, "foobar", "Zm9vYmFy\n"},
{valid, "foobar", "Zm9vYmFy\n\n"},
{valid, "foobar", " Zm9vYmFy\n\n"},
{valid, "foobar", " Z m 9 v Y m F y\n\n"},
{invalid, "", "Zm9vYmFy=\n"},
{invalid, "", "Zm9vYmFy==\n"},
{invalid, "", "Zm9vYmFy===\n"},
{invalid, "", "Z"},
{invalid, "", "Z\n"},
{invalid, "", "ab!c"},
{invalid, "", "ab=c"},
{invalid, "", "abc"},
{canonical, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eA==\n"},
{valid, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eA\n==\n"},
{valid, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eA=\n=\n"},
{invalid, "",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eA=\n==\n"},
{canonical, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4\neHh4eHh"
"4eHh4eHh4\n"},
{canonical,
"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4\neHh4eHh"
"4eHh4eHh4eHh4eA==\n"},
{valid, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh\n4eHh4eHh"
"4eHh4eHh4eHh4eA==\n"},
{valid, "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4e"
"Hh4eHh4eHh4eA==\n"},
{invalid, "",
"eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eHh4eA=="
"\neHh4eHh4eHh4eHh4eHh4eHh4\n"},
// A '-' has traditionally been treated as the end of the data by OpenSSL
// and anything following would be ignored. BoringSSL does not accept this
// non-standard extension.
{invalid, "", "Zm9vYmFy-anythinggoes"},
{invalid, "", "Zm9vYmFy\n-anythinggoes"},
// CVE-2015-0292
{invalid, "",
"ZW5jb2RlIG1lCg==========================================================="
"=======\n"},
};
static const size_t kNumTests = sizeof(kTestVectors) / sizeof(kTestVectors[0]);
// RemoveNewlines returns a copy of |in| with all '\n' characters removed.
static std::string RemoveNewlines(const char *in) {
std::string ret;
const size_t in_len = strlen(in);
size_t i;
for (i = 0; i < in_len; i++) {
if (in[i] != '\n') {
ret.push_back(in[i]);
}
}
return ret;
}
static bool TestEncodeBlock() {
for (unsigned i = 0; i < kNumTests; i++) {
const TestVector *t = &kTestVectors[i];
if (t->relation != canonical) {
continue;
}
const size_t decoded_len = strlen(t->decoded);
size_t max_encoded_len;
if (!EVP_EncodedLength(&max_encoded_len, decoded_len)) {
fprintf(stderr, "#%u: EVP_EncodedLength failed\n", i);
return false;
}
std::vector<uint8_t> out_vec(max_encoded_len);
uint8_t *out = out_vec.data();
size_t len = EVP_EncodeBlock(out, (const uint8_t *)t->decoded, decoded_len);
std::string encoded(RemoveNewlines(t->encoded));
if (len != encoded.size() ||
memcmp(out, encoded.data(), len) != 0) {
fprintf(stderr, "encode(\"%s\") = \"%.*s\", want \"%s\"\n",
t->decoded, (int)len, (const char*)out, encoded.c_str());
return false;
}
}
return true;
}
static bool TestDecodeBase64() {
size_t len;
for (unsigned i = 0; i < kNumTests; i++) {
const TestVector *t = &kTestVectors[i];
if (t->relation == valid) {
// The non-canonical encodings will generally have odd whitespace etc
// that |EVP_DecodeBase64| will reject.
continue;
}
const std::string encoded(RemoveNewlines(t->encoded));
std::vector<uint8_t> out_vec(encoded.size());
uint8_t *out = out_vec.data();
int ok = EVP_DecodeBase64(out, &len, out_vec.size(),
(const uint8_t *)encoded.data(), encoded.size());
if (t->relation == invalid) {
if (ok) {
fprintf(stderr, "decode(\"%s\") didn't fail but should have\n",
encoded.c_str());
return false;
}
} else if (t->relation == canonical) {
if (!ok) {
fprintf(stderr, "decode(\"%s\") failed\n", encoded.c_str());
return false;
}
if (len != strlen(t->decoded) ||
memcmp(out, t->decoded, len) != 0) {
fprintf(stderr, "decode(\"%s\") = \"%.*s\", want \"%s\"\n",
encoded.c_str(), (int)len, (const char*)out, t->decoded);
return false;
}
}
}
return true;
}
static bool TestDecodeBlock() {
for (unsigned i = 0; i < kNumTests; i++) {
const TestVector *t = &kTestVectors[i];
if (t->relation != canonical) {
continue;
}
std::string encoded(RemoveNewlines(t->encoded));
std::vector<uint8_t> out_vec(encoded.size());
uint8_t *out = out_vec.data();
// Test that the padding behavior of the deprecated API is preserved.
int ret =
EVP_DecodeBlock(out, (const uint8_t *)encoded.data(), encoded.size());
if (ret < 0) {
fprintf(stderr, "EVP_DecodeBlock(\"%s\") failed\n", t->encoded);
return false;
}
if (ret % 3 != 0) {
fprintf(stderr, "EVP_DecodeBlock did not ignore padding\n");
return false;
}
size_t expected_len = strlen(t->decoded);
if (expected_len % 3 != 0) {
ret -= 3 - (expected_len % 3);
}
if (static_cast<size_t>(ret) != strlen(t->decoded) ||
memcmp(out, t->decoded, ret) != 0) {
fprintf(stderr, "decode(\"%s\") = \"%.*s\", want \"%s\"\n",
t->encoded, ret, (const char*)out, t->decoded);
return false;
}
}
return true;
}
static bool TestEncodeDecode() {
for (unsigned test_num = 0; test_num < kNumTests; test_num++) {
const TestVector *t = &kTestVectors[test_num];
EVP_ENCODE_CTX ctx;
const size_t decoded_len = strlen(t->decoded);
if (t->relation == canonical) {
size_t max_encoded_len;
if (!EVP_EncodedLength(&max_encoded_len, decoded_len)) {
fprintf(stderr, "#%u: EVP_EncodedLength failed\n", test_num);
return false;
}
// EVP_EncodeUpdate will output new lines every 64 bytes of output so we
// need slightly more than |EVP_EncodedLength| returns. */
max_encoded_len += (max_encoded_len + 63) >> 6;
std::vector<uint8_t> out_vec(max_encoded_len);
uint8_t *out = out_vec.data();
EVP_EncodeInit(&ctx);
int out_len;
EVP_EncodeUpdate(&ctx, out, &out_len,
reinterpret_cast<const uint8_t *>(t->decoded),
decoded_len);
size_t total = out_len;
EVP_EncodeFinal(&ctx, out + total, &out_len);
total += out_len;
if (total != strlen(t->encoded) || memcmp(out, t->encoded, total) != 0) {
fprintf(stderr, "#%u: EVP_EncodeUpdate produced different output: '%s' (%u)\n",
test_num, out, static_cast<unsigned>(total));
return false;
}
}
std::vector<uint8_t> out_vec(strlen(t->encoded));
uint8_t *out = out_vec.data();
EVP_DecodeInit(&ctx);
int out_len;
size_t total = 0;
int ret = EVP_DecodeUpdate(&ctx, out, &out_len,
reinterpret_cast<const uint8_t *>(t->encoded),
strlen(t->encoded));
if (ret != -1) {
total = out_len;
ret = EVP_DecodeFinal(&ctx, out + total, &out_len);
total += out_len;
}
switch (t->relation) {
case canonical:
case valid:
if (ret == -1) {
fprintf(stderr, "#%u: EVP_DecodeUpdate failed\n", test_num);
return false;
}
if (total != decoded_len || memcmp(out, t->decoded, decoded_len)) {
fprintf(stderr, "#%u: EVP_DecodeUpdate produced incorrect output\n",
test_num);
return false;
}
break;
case invalid:
if (ret != -1) {
fprintf(stderr, "#%u: EVP_DecodeUpdate was successful but shouldn't have been\n", test_num);
return false;
}
break;
}
}
return true;
}
static bool TestDecodeUpdateStreaming() {
for (unsigned test_num = 0; test_num < kNumTests; test_num++) {
const TestVector *t = &kTestVectors[test_num];
if (t->relation == invalid) {
continue;
}
const size_t encoded_len = strlen(t->encoded);
std::vector<uint8_t> out(encoded_len);
for (size_t chunk_size = 1; chunk_size <= encoded_len; chunk_size++) {
size_t out_len = 0;
EVP_ENCODE_CTX ctx;
EVP_DecodeInit(&ctx);
for (size_t i = 0; i < encoded_len;) {
size_t todo = encoded_len - i;
if (todo > chunk_size) {
todo = chunk_size;
}
int bytes_written;
int ret = EVP_DecodeUpdate(
&ctx, out.data() + out_len, &bytes_written,
reinterpret_cast<const uint8_t *>(t->encoded + i), todo);
i += todo;
switch (ret) {
case -1:
fprintf(stderr, "#%u: EVP_DecodeUpdate returned error\n", test_num);
return 0;
case 0:
out_len += bytes_written;
if (i == encoded_len ||
(i + 1 == encoded_len && t->encoded[i] == '\n') ||
/* If there was an '-' in the input (which means “EOF”) then
* this loop will continue to test that |EVP_DecodeUpdate| will
* ignore the remainder of the input. */
strchr(t->encoded, '-') != nullptr) {
break;
}
fprintf(stderr,
"#%u: EVP_DecodeUpdate returned zero before end of "
"encoded data\n",
test_num);
return 0;
default:
out_len += bytes_written;
}
}
int bytes_written;
int ret = EVP_DecodeFinal(&ctx, out.data() + out_len, &bytes_written);
if (ret == -1) {
fprintf(stderr, "#%u: EVP_DecodeFinal returned error\n", test_num);
return 0;
}
out_len += bytes_written;
if (out_len != strlen(t->decoded) ||
memcmp(out.data(), t->decoded, out_len) != 0) {
fprintf(stderr, "#%u: incorrect output\n", test_num);
return 0;
}
}
}
return true;
}
int main(void) {
CRYPTO_library_init();
if (!TestEncodeBlock() ||
!TestDecodeBase64() ||
!TestDecodeBlock() ||
!TestDecodeUpdateStreaming() ||
!TestEncodeDecode()) {
return 1;
}
printf("PASS\n");
return 0;
}