/* * COPYRIGHT: See COPYING in the top level directory * PROJECT: ReactOS test application * FILE: apps/net/netreg/netreg.cpp * PURPOSE: HTTP Registry Server * PROGRAMMERS: Art Yerkes (arty@users.sf.net) * REVISIONS: * 01-17-2005 arty -- initial */ #include #include #include #include #include #include #include using std::hex; using std::setw; using std::setfill; using std::map; using std::string; using std::ostringstream; const char *root_entries[] = { "HKEY_LOCAL_MACHINE", "HKEY_CURRENT_USER", "HKEY_CLASSES_ROOT", "HKEY_CURRENT_CONFIG", "HKEY_USERS", 0 }; const HKEY root_handles[] = { HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER, HKEY_CLASSES_ROOT, HKEY_CURRENT_CONFIG, HKEY_USERS }; class RequestHandler { public: RequestHandler( SOCKET s ) : socket( s ), state( NO_REQUEST_YET ) {} ~RequestHandler() { closesocket( socket ); } void RecvData( string input ) { full_input += input; if( full_input.find( "\r\n\r\n" ) != string::npos ) { // Full request received... size_t space_pos = full_input.find( ' ' ); if( space_pos == string::npos ) { state = SHOULD_DIE; return; } string method = full_input.substr( 0, space_pos ); if( method != "GET" ) { state = SHOULD_DIE; return; } space_pos++; if( full_input[space_pos] != '/' ) { state = SHOULD_DIE; return; } space_pos++; string reg_key_and_remainder = full_input.substr( space_pos, full_input.size() - space_pos ); space_pos = reg_key_and_remainder.find( ' ' ); if( space_pos == string::npos ) { state = SHOULD_DIE; return; } string reg_key_name = reg_key_and_remainder.substr( 0, space_pos ); process_request( urldec( reg_key_name ) ); state = REQUEST_RECVD_SENDING_REPLY; } } void OkToSend() { int rv = send( socket, remaining_output.c_str(), remaining_output.size(), 0 ); if( rv < 0 ) { state = SHOULD_DIE; return; } else { remaining_output = remaining_output.substr( rv, remaining_output.size() - rv ); if( remaining_output.size() == 0 ) { state = SHOULD_DIE; } } } SOCKET GetSocket() const { return socket; } bool ShouldDie() const { return state == SHOULD_DIE; } bool WantPollout() const { return state == REQUEST_RECVD_SENDING_REPLY; } private: string urlenc( string in ) { ostringstream out; for( string::iterator i = in.begin(); i != in.end(); i++ ) { if( isalnum( *i ) || *i == '/' ) out << *i; else { char minibuf[10]; sprintf( minibuf, "%02x", *i ); out << "%" << minibuf; } } return out.str(); } string urldec( string in ) { string out; for( string::iterator i = in.begin(); i != in.end(); i++ ) { if( *i == '%' ) { char buf[3]; int res = ' '; i++; if( i != in.end() ) { buf[0] = *i; i++; if( i != in.end() ) { buf[1] = *i; buf[2] = 0; sscanf( buf, "%x", &res ); fprintf( stderr, "Interpreting %c%c as %02x\n", buf[0], buf[1], res ); out += (char)res; } } } else out += *i; } return out; } string dump_one_line( const char *data, int llen, int len, int addr ) { ostringstream out; int i; out << setw( 8 ) << setfill( '0' ) << hex << addr << ": "; for( i = 0; i < llen; i++ ) { if( i < len ) out << setw( 2 ) << setfill( '0' ) << hex << (data[i] & 0xff) << " "; else out << " "; } out << " : "; for( i = 0; i < llen; i++ ) { if( i < len && i < llen && data[i] >= ' ' && data[i] < 0x7f ) out << data[i]; else out << '.'; } out << "\n"; return out.str(); } string bindump( const char *data, int len ) { const char *end = data + len; string out; int addr = 0; out += "
";
    
    while( data < end ) {
      out += dump_one_line( data, 16, end - data, addr );
      addr += 16;
      data += 16;
    }

    out += "
"; return out; } string present_value( DWORD type, const char *data, DWORD len ) { switch( type ) { default: return bindump( data, len ); } } void process_valid_request( HKEY open_reg_key, string key_name ) { size_t ending_slash; string up_level; ostringstream text_out; DWORD num_sub_keys; DWORD max_subkey_len; DWORD num_values; DWORD max_value_name_len; DWORD max_value_len; char *value_name_buf; char *value_buf; char *key_name_buf; if( RegQueryInfoKey( open_reg_key, NULL, NULL, NULL, &num_sub_keys, &max_subkey_len, NULL, &num_values, &max_value_name_len, &max_value_len, NULL, NULL ) != ERROR_SUCCESS ) { process_invalid_request( key_name ); return; } value_name_buf = new char [max_value_name_len+1]; value_buf = new char [max_value_len+1]; key_name_buf = new char [max_subkey_len+1]; ending_slash = key_name.rfind( '/' ); if( ending_slash != string::npos ) up_level = key_name.substr( 0, ending_slash ); text_out << "HTTP/1.0 200 OK\r\n" << "Content-Type: text/html\r\n" << "\r\n" << "Registry Key `" << key_name << "'\r\n" << "

Registry Key `" << key_name << "'

\r\n" << "(Up one level)

\r\n" << "

Subkeys:

\r\n"; DWORD which_index; DWORD key_name_size; for( which_index = 0; which_index < num_sub_keys; which_index++ ) { key_name_size = max_subkey_len+1; RegEnumKeyEx( open_reg_key, which_index, key_name_buf, &key_name_size, NULL, NULL, NULL, NULL ); text_out << "\r\n"; } text_out << "
" << string(key_name_buf,key_name_size) << "

Values:

\r\n"; DWORD value_name_size; DWORD value_data_size; DWORD value_type; for( which_index = 0; which_index < num_values; which_index++ ) { value_name_size = max_value_name_len+1; value_data_size = max_value_len+1; RegEnumValue( open_reg_key, which_index, value_name_buf, &value_name_size, NULL, &value_type, (BYTE *)value_buf, &value_data_size ); text_out << ""; } text_out << "\r\n"; delete [] key_name_buf; delete [] value_name_buf; delete [] value_buf; remaining_output = text_out.str(); } void process_invalid_request( string reg_key ) { ostringstream text_out; text_out << "HTTP/1.0 404 Not Found\r\n" << "Content-Type: text/html\r\n" << "\r\n" << "Can't find registry key `" << reg_key << "'\r\n" << "

Can't find registry key `" << reg_key << "'

\r\n" << "The registry key doesn't exist in the local registry.\r\n" << "\r\n"; remaining_output = text_out.str(); } void process_root_request() { ostringstream text_out; int i; text_out << "HTTP/1.0 200 OK\r\n" << "Content-Type: text/html\r\n" << "\r\n" << "Registry Browser\r\n" << "\r\n" << "

Registry Browser

" << "You can use this interface to browse the registry." << "You will be presented with one registry key at a time and " << "the decendents.\r\n" << "

Root Level

\r\n" << "Subkeys:\r\n"; remaining_output = text_out.str(); } void process_request( string reg_key ) { int i; bool is_predefined_key = true; if( reg_key == "" ) { process_root_request(); return; } HKEY hRegKey = 0; // Parse the key name... size_t slash = reg_key.find( '/' ); string reg_initial = ""; if( slash == string::npos ) // A root key... reg_initial = reg_key; else // Any other key reg_initial = reg_key.substr( 0, slash ); fprintf( stderr, "reg_init = %s, reg_key = %s\n", reg_initial.c_str(), reg_key.c_str() ); for( i = 0; root_entries[i]; i++ ) if( reg_initial == root_entries[i] ) hRegKey = root_handles[i]; if( hRegKey != 0 && reg_initial != reg_key ) { size_t start_of_reg_path = reg_initial.size() + 1; string reg_path = reg_key.substr( start_of_reg_path, reg_key.size() - start_of_reg_path ); string reg_open_path = reg_path; do { slash = reg_open_path.find( '/' ); string reg_single_key = reg_open_path; if( slash != string::npos ) { reg_single_key = reg_open_path.substr( 0, slash ); reg_open_path = reg_open_path.substr( slash+1, reg_open_path.size() ); } HKEY oldKey = hRegKey; fprintf( stderr, "Opening %s\n", reg_single_key.c_str() ); if( RegOpenKey( hRegKey, reg_single_key.c_str(), &hRegKey ) != ERROR_SUCCESS ) { hRegKey = 0; break; } else RegCloseKey( oldKey ); is_predefined_key = false; } while( slash != string::npos ); } if( hRegKey == 0 ) process_invalid_request( reg_key ); else { process_valid_request( hRegKey, reg_key ); if( !is_predefined_key ) RegCloseKey( hRegKey ); } } typedef enum _RHState { NO_REQUEST_YET, REQUEST_RECVD_SENDING_REPLY, SHOULD_DIE } RHState; string full_input; string remaining_output; SOCKET socket; RHState state; }; SOCKET make_listening_socket( int port ) { struct sockaddr_in sa; ZeroMemory( &sa, sizeof( sa ) ); sa.sin_family = PF_INET; sa.sin_port = ntohs( port ); fprintf( stderr, "Creating the listener\n" ); SOCKET l = socket( PF_INET, SOCK_STREAM, 0 ); fprintf( stderr, "Socket %x\n", l ); if( l == INVALID_SOCKET ) return l; if( bind( l, (struct sockaddr *)&sa, sizeof( sa ) ) < 0 ) { fprintf( stderr, "Bad response from bind: %d\n", WSAGetLastError() ); closesocket( l ); return INVALID_SOCKET; } if( listen( l, 5 ) < 0 ) { fprintf( stderr, "Listening: %d\n", WSAGetLastError() ); closesocket( l ); return INVALID_SOCKET; } return l; } int main( int argc, char **argv ) { WSADATA wdWinsockData; map requests; fd_set pollin,pollout,pollerr; SOCKET listen_socket; int i; int port_to_listen = 80; unsigned int active_fds = 0; for( i = 1; i < argc; i++ ) { if( string( "-p" ) == argv[i] ) { i++; if( i < argc ) port_to_listen = atoi( argv[i] ); } } WSAStartup( 0x0101, &wdWinsockData ); listen_socket = make_listening_socket( port_to_listen ); if( listen_socket == INVALID_SOCKET ) return 1; while( true ) { FD_ZERO( &pollin ); FD_ZERO( &pollout ); FD_ZERO( &pollerr ); active_fds = listen_socket + 1; for( std::map::iterator i = requests.begin(); i != requests.end(); i++ ) { if( i->second->ShouldDie() ) { delete i->second; requests.erase( i ); i = requests.begin(); break; } FD_SET(i->first,&pollin); FD_SET(i->first,&pollerr); if( i->first > active_fds ) active_fds = i->first + 1; if( i->second->WantPollout() ) FD_SET(i->first,&pollout); } FD_SET(listen_socket,&pollin); active_fds = select( active_fds, &pollin, &pollout, &pollerr, NULL ); if( active_fds > 0 ) { if( FD_ISSET(listen_socket,&pollin) ) { SOCKET ns = accept( listen_socket, NULL, NULL ); if( ns != INVALID_SOCKET ) { requests.insert( std::make_pair( ns, new RequestHandler( ns ) ) ); } } for( std::map::iterator i = requests.begin(); i != requests.end(); i++ ) { if( FD_ISSET(i->first,&pollin) ) { char inbuf[1024]; int rv = recv(i->first,inbuf,1024,0); if( rv < 0 ) { delete i->second; requests.erase( i ); i = requests.begin(); break; } else i->second->RecvData( string( inbuf, rv ) ); } if( FD_ISSET(i->first,&pollout) ) { i->second->OkToSend(); } if( FD_ISSET(i->first,&pollerr) ) { delete i->second; requests.erase( i ); i = requests.begin(); break; } } } } WSACleanup(); }
" << string(value_name_buf,value_name_size) << "" << present_value( value_type, value_buf, value_data_size ) << "