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Fix base64_decode() to return and check length correctly

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This commit is contained in:
Paul Bakker 2014-07-04 13:50:31 +02:00
parent 31855456f9
commit d598318661
4 changed files with 69 additions and 0 deletions
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2
ChangeLog
View file

@ -59,6 +59,8 @@ Bugfix
exchange that caused some handshakes to fail with other implementations.
(Failure rate <= 1/255 with common DHM moduli.)
* Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
* Fix base64_decode() to return and check length correctly (in case of
tight buffers)
= PolarSSL 1.3.7 released on 2014-05-02
Features

1
library/base64.c
View file

@ -172,6 +172,7 @@ int base64_decode( unsigned char *dst, size_t *dlen,
return( 0 );
n = ( ( n * 6 ) + 7 ) >> 3;
n -= j;
if( dst == NULL || *dlen < n )
{

27
tests/suites/test_suite_base64.data
View file

@ -55,6 +55,33 @@ base64_decode:"zm===":"":POLARSSL_ERR_BASE64_INVALID_CHARACTER
Base64 decode (Invalid char after equal signs)
base64_decode:"zm=masd":"":POLARSSL_ERR_BASE64_INVALID_CHARACTER
Base64 encode hex #1
base64_encode_hex:"010203040506070809":"AQIDBAUGBwgJ":13:0
Base64 encode hex #2 (buffer too small)
base64_encode_hex:"010203040506070809":"AQIDBAUGBwgJ":12:POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL
Base64 encode hex #3
base64_encode_hex:"0102030405060708":"AQIDBAUGBwg=":13:0
Base64 encode hex #4
base64_encode_hex:"01020304050607":"AQIDBAUGBw==":13:0
Base64 decode hex #1
base64_decode_hex:"AQIDBAUGBwgJ":"010203040506070809":9:0
Base64 decode hex #2 (buffer too small)
base64_decode_hex:"AQIDBAUGBwgJ":"010203040506070809":8:POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL
Base64 decode hex #3
base64_decode_hex:"AQIDBAUGBwg=":"0102030405060708":8:0
Base64 decode hex #4
base64_decode_hex:"AQIDBAUGBw==":"01020304050607":7:0
Base64 decode hex #5 (buffer too small)
base64_decode_hex:"AQIDBAUGBw==":"01020304050607":6:POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL
Base64 Selftest
depends_on:POLARSSL_SELF_TEST
base64_selftest:

39
tests/suites/test_suite_base64.function
View file

@ -48,6 +48,45 @@ void base64_decode( char *src_string, char *dst_string, int result )
}
/* END_CASE */
/* BEGIN_CASE */
void base64_encode_hex( char *src_hex, char *dst, int dst_buf_size,
int result )
{
unsigned char *src, *res;
size_t len = dst_buf_size, src_len;
src = unhexify_alloc( src_hex, &src_len );
res = zero_alloc( dst_buf_size );
TEST_ASSERT( base64_encode( res, &len, src, src_len ) == result );
if( result == 0 )
{
TEST_ASSERT( len == strlen( dst ) );
TEST_ASSERT( memcmp( dst, res, len ) == 0 );
}
}
/* END_CASE */
/* BEGIN_CASE */
void base64_decode_hex( char *src, char *dst_hex, int dst_buf_size,
int result )
{
unsigned char *dst, *res;
size_t len = dst_buf_size, dst_len;
dst = unhexify_alloc( dst_hex, &dst_len );
res = zero_alloc( dst_buf_size );
TEST_ASSERT( base64_decode( res, &len, (unsigned char *) src,
strlen( src ) ) == result );
if( result == 0 )
{
TEST_ASSERT( len == dst_len );
TEST_ASSERT( memcmp( dst, res, len ) == 0 );
}
}
/* END_CASE */
/* BEGIN_CASE depends_on:POLARSSL_SELF_TEST */
void base64_selftest()
{