diff options
Diffstat (limited to 'src/dns.c')
| -rw-r--r-- | src/dns.c | 18 |
1 files changed, 10 insertions, 8 deletions
@@ -194,15 +194,16 @@ int dns_parse_packet ( char* _buffer, int _bufflen, dns_message_t* _msg ) return 0; } -int fqdn_to_qname( char* _source, int _sourcelen, char* _sink ,int _sinklen ) +int fqdn_to_qname( char* _source, int _sourcelen, char* _sink, int _sinklen ) { int i, o; int lastdot = 0; + /* TODO Bounds checking!! */ if (_sourcelen < 1 || _sinklen < 1) return -1; - _sink[0] = ' '; /* Set to known value */ + _sink[0] = '\0'; /* Ensure termination */ for(i = 0; ((i < _sourcelen) && (i < (_sinklen - 1))); i++) { /* Copy offset 1 */ if(! _source[i]) @@ -210,19 +211,18 @@ int fqdn_to_qname( char* _source, int _sourcelen, char* _sink ,int _sinklen ) _sink[i+1] = _source[i]; } - if( _source[i] ) { - _sink[0] = 0; /* ensure _sink is terminated */ + if( _source[i] ) return -1; - } - for (o = 0; o < i; o++) { + for (o = 0; o <= i; o++) { if( _sink[o] == '.') { _sink[lastdot] = (char)(o - lastdot - 1); lastdot = o; } } - _sink[lastdot] = (char)(i - lastdot); + /* TODO is that needed? */ + _sink[lastdot] = (char)(o - lastdot - 1); _sink[i + 1] = 0; return i+2; @@ -274,7 +274,8 @@ int qname_to_fqdn( char* _source, int _sourcelen, char* _sink, int _sinklen ) return -1; } if ( !_source[i] ) { - _sink[i-1] = '\0'; + _sink[i-1] = '.'; + _sink[i] = '\0'; break; } else if (i == next_dot) { _sink[i-1]='.'; @@ -292,6 +293,7 @@ int qname_check( char* _source, int _sourcelen ) int next_dot = 0; int i = 0; + /* TODO Bounds checking!! */ if (!_sourcelen) return -1; |