diff options
Diffstat (limited to 'src/core/base16.c')
| -rw-r--r-- | src/core/base16.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/core/base16.c b/src/core/base16.c index f9e0f336..47e35f41 100644 --- a/src/core/base16.c +++ b/src/core/base16.c @@ -78,12 +78,23 @@ int hex_decode ( char separator, const char *encoded, void *data, size_t len ) { unsigned int count = 0; unsigned int sixteens; unsigned int units; + int optional; + /* Strip out optionality flag from separator character */ + optional = ( separator & HEX_DECODE_OPTIONAL ); + separator &= ~HEX_DECODE_OPTIONAL; + + /* Decode string */ while ( *encoded ) { /* Check separator, if applicable */ - if ( count && separator && ( ( *(encoded++) != separator ) ) ) - return -EINVAL; + if ( count && separator ) { + if ( *encoded == separator ) { + encoded++; + } else if ( ! optional ) { + return -EINVAL; + } + } /* Extract digits. Note that either digit may be NUL, * which would be interpreted as an invalid value by |