You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
130 lines
3.8 KiB
130 lines
3.8 KiB
/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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*/
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/*
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Copyright (C) 2005 İsmail Dönmez <ismail@kde.org>
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*/
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#include "blowfish.h"
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#include "mc_blowfish.h"
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#include "server.h"
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#include "channel.h"
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#include <tqcstring.h>
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#include <tqstringlist.h>
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namespace Konversation
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{
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// Find n'th occurrence of separator in input and return the index
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int findOccurrence(const TQCString& input, const TQCString& separator, int nth)
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{
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int j=1;
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uint i;
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for(i=0; i < input.length(); ++i)
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{
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if((input.mid(i,1) == separator))
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{
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if (j == nth)
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return i;
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else
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++j;
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}
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}
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return i;
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}
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void decrypt(const TQString& recipient, TQCString& cipher, Server* server)
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{
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TQCString key = server->getKeyForRecipient(recipient);
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if(!key.isEmpty())
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{
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int index = findOccurrence(cipher, ":", 2);
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TQCString backup = cipher.mid(0,index+1);
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TQCString tmp = cipher.mid(index+1);
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char* tmp2;
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if(server->identifyMsgEnabled()) // Workaround braindead Freenode prefixing messages with +
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tmp = tmp.mid(1);
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if( !(tmp.mid(0,4) == "+OK ") && !(tmp.mid(0,5) == "mcps ") )
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return;
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else
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cipher = tmp;
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if(cipher.mid(0,5) == "mcps ")
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cipher = cipher.mid(5);
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else
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cipher = cipher.mid(4);
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TQCString ckey( key.length()+2 );
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TQCString result( cipher.length()+1 );
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tqstrncpy(result.data(), cipher.data(), cipher.length());
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tqstrncpy(ckey.data(), key.data(), key.length()+1);
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tmp2 = decrypt_string(ckey.data(),result.data());
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const char *pfx="(e) ";
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// If it's a CTCP we don't want to have the (e) interfering with the processing
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if (tmp2[0] == 1)
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pfx = "\x0";
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cipher = backup+pfx+tmp2+' '+'\n'; // FIXME(??) why is there an added space here?
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free(tmp2);
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}
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}
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void decryptTopic(const TQString& recipient, TQCString& cipher, Server* server)
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{
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TQCString key = server->getKeyForRecipient(recipient);
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if(!key.isEmpty())
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{
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int index = findOccurrence(cipher, ":", 2);
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TQCString backup = cipher.mid(0,index+1);
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TQCString tmp = cipher.mid(index+1);
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char* tmp2;
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if(tmp.mid(0,4) == "+OK ") // FiSH style topic
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cipher = tmp.mid(4);
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else if(tmp.left(5) == "«m«")
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cipher = tmp.mid(5,tmp.length()-10);
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else
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return;
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TQCString result( cipher.length()+1 );
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TQCString ckey( key.length()+2 );
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tqstrncpy(ckey.data(), key.data(), key.length()+1);
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tqstrncpy(result.data(), cipher.data(), cipher.length());
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tmp2 = decrypt_string(ckey.data(),result.data());
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cipher = tmp2;
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if(cipher.mid(0,2) == "@@")
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cipher = cipher.mid(2);
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cipher = backup+"(e) "+cipher;
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free(tmp2);
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}
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}
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bool encrypt(const TQString& key, TQCString& cipher)
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{
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if(key.isEmpty())
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return false;
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if (cipher.left(3) == "+p ")
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cipher = cipher.mid(3);
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else
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{
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TQCString ckey(key.local8Bit());
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char *tmp = encrypt_string(ckey.data(), cipher.data());
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cipher = TQCString("+OK ") + tmp;
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free(tmp);
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}
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return true;
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}
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}
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