7 char hexDigit( char c ) {
23 std::string toHex( const char* buf, int len ) {
24 std::string data = "000000";
26 for( int i = 0; i < len; i++ ) {
27 data.append( 1, ' ' );
28 data.append( 1, hexDigit( ( buf[i] >> 4 ) & 0xF ) );
29 data.append( 1, hexDigit( buf[i] & 0xF ) );
36 this->buffer = std::vector<char>( 4096 );
37 this->decodeTarget = 0;
43 void SlipBIO::setTarget( std::shared_ptr<OpensslBIO> target ) {
44 this->target = target;
47 SlipBIO::SlipBIO( std::shared_ptr<OpensslBIO> target ) {
48 this->target = target;
50 this->buffer = std::vector<char>( 4096 );
51 this->decodeTarget = 0;
58 SlipBIO::~SlipBIO() {}
60 int SlipBIO::write( const char* buf, int num ) {
63 for( int i = 0; i < num; i++ ) {
64 if( ( buf[i] == ( char )0xc0 ) || ( buf[i] == ( char )0xDB ) ) {
69 int totalLen = num + badOnes + 1; // 2
70 char* targetPtr = ( char* ) malloc( totalLen );
76 std::shared_ptr<char> t = std::shared_ptr<char>( targetPtr, free );
79 //targetPtr[j++] = (char)0xC0;
81 for( int i = 0; i < num; i++ ) {
82 if( buf[i] == ( char )0xc0 ) {
83 targetPtr[j++] = ( char )0xDB;
84 targetPtr[j++] = ( char )0xDC;
85 } else if( buf[i] == ( char )0xDB ) {
86 targetPtr[j++] = ( char )0xDB;
87 targetPtr[j++] = ( char )0xDD;
89 targetPtr[j++] = buf[i];
93 targetPtr[j++] = ( char )0xC0;
99 int dlen = target->write( targetPtr + sent, std::min( 1024, j - sent ) );
102 throw "Error, target write failed";
103 } else if( dlen == 0 ) {
118 int SlipBIO::read( char* buf, int size ) {
119 // while we have no data to decode or unmasking does not yield a full package
120 while( !packageLeft && ( decodePos >= rawPos || !unmask() ) ) {
122 // we have no data, read more
123 if( buffer.size() - rawPos < 64 ) {
124 // not enough space... package is too big
129 int len = target->read( buffer.data() + rawPos, buffer.capacity() - rawPos );
142 int len = std::min( decodeTarget, ( unsigned int ) size );
143 // a package finished, return it
144 std::copy( buffer.data(), buffer.data() + len, buf );
145 // move the buffer contents back
146 std::copy( buffer.data() + len, buffer.data() + decodeTarget, buffer.data() );
149 if( decodeTarget == 0 ) {
156 long SlipBIO::ctrl( int cmod, long arg1, void* arg2 ) {
160 std::cout << "SLIP crtl: " << cmod << std::endl;
161 return target->ctrl( cmod, arg1, arg2 );
164 const char* SlipBIO::getName() {
168 bool SlipBIO::unmask() {
169 unsigned int j = decodeTarget;
171 for( unsigned int i = decodePos; i < rawPos; i++ ) {
172 if( buffer[i] == ( char ) 0xDB ) {
177 buffer[decodeTarget] = buffer[i - 1];
178 decodePos = decodeTarget;
179 rawPos = decodePos + 1;
180 return 0;// no packet
181 } else if( buffer[i] == ( char )0xdc ) {
182 buffer[j++] = ( char ) 0xc0;
183 } else if( buffer[i] == ( char )0xdd ) {
184 buffer[j++] = ( char ) 0xdb;
191 } else if( buffer[i] == ( char ) 0xc0 ) {
195 // copy rest to bufferfer i to len
203 buffer[j++] = buffer[i];