X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fcoreuserinputhandler.cpp;h=b9565dcf4ca53a9bea8d511f6e6c9e758416948c;hp=185baf708b706ab7d3348947d98b5fa484e5a733;hb=d54b44bc5b6e1ff4308f9d143babf29028ae47cd;hpb=14281719026a2d9d30667f63f3659c2c4e7e0cca

diff --git a/src/core/coreuserinputhandler.cpp b/src/core/coreuserinputhandler.cpp
index 185baf70..b9565dcf 100644
--- a/src/core/coreuserinputhandler.cpp
+++ b/src/core/coreuserinputhandler.cpp
@@ -21,7 +21,7 @@
 
 #include "util.h"
 
-#include "ctcphandler.h"
+#include "ctcpparser.h"
 
 #include <QRegExp>
 
@@ -154,7 +154,8 @@ void CoreUserInputHandler::handleCtcp(const BufferInfo &bufferInfo, const QStrin
     message = QString::number(now);
   }
 
-  network()->ctcpHandler()->query(nick, ctcpTag, message);
+  // FIXME make this a proper event
+  coreNetwork()->coreSession()->ctcpParser()->query(coreNetwork(), nick, ctcpTag, message);
   emit displayMsg(Message::Action, BufferInfo::StatusBuffer, "", verboseMessage, network()->myNick());
 }
 
@@ -163,6 +164,9 @@ void CoreUserInputHandler::handleDelkey(const BufferInfo &bufferInfo, const QStr
   if(!bufferInfo.isValid())
     return;
 
+  if(!Cipher::neededFeaturesAvailable())
+    return;
+
   QStringList parms = msg.split(' ', QString::SkipEmptyParts);
 
   if(parms.isEmpty() && !bufferInfo.bufferName().isEmpty())
@@ -309,7 +313,8 @@ void CoreUserInputHandler::handleList(const BufferInfo &bufferInfo, const QStrin
 
 void CoreUserInputHandler::handleMe(const BufferInfo &bufferInfo, const QString &msg) {
   if(bufferInfo.bufferName().isEmpty()) return; // server buffer
-  network()->ctcpHandler()->query(bufferInfo.bufferName(), "ACTION", msg);
+  // FIXME make this a proper event
+  coreNetwork()->coreSession()->ctcpParser()->query(coreNetwork(), bufferInfo.bufferName(), "ACTION", msg);
   emit displayMsg(Message::Action, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
 }
 
@@ -344,10 +349,10 @@ void CoreUserInputHandler::handleMsg(const BufferInfo &bufferInfo, const QString
   QByteArray encMsg = userEncode(target, msg.section(' ', 1));
 
 #ifdef HAVE_QCA2
-  encMsg = encrypt(target, encMsg);
+  putPrivmsg(serverEncode(target), encMsg, network()->cipher(target));
+#else
+  putPrivmsg(serverEncode(target), encMsg);
 #endif
-
-  putPrivmsg(serverEncode(target), encMsg, false);
 }
 
 void CoreUserInputHandler::handleNick(const BufferInfo &bufferInfo, const QString &msg) {
@@ -414,7 +419,7 @@ void CoreUserInputHandler::handleQuery(const BufferInfo &bufferInfo, const QStri
   QString target = msg.section(' ', 0, 0);
   QString message = msg.section(' ', 1);
   if(message.isEmpty())
-    emit displayMsg(Message::Server, BufferInfo::QueryBuffer, target, "Starting query with " + target, network()->myNick(), Message::Self);
+    emit displayMsg(Message::Server, BufferInfo::QueryBuffer, target, tr("Starting query with %1").arg(target), network()->myNick(), Message::Self);
   else
     emit displayMsg(Message::Plain, BufferInfo::QueryBuffer, target, message, network()->myNick(), Message::Self);
   handleMsg(bufferInfo, msg);
@@ -440,10 +445,10 @@ void CoreUserInputHandler::handleSay(const BufferInfo &bufferInfo, const QString
 
   QByteArray encMsg = channelEncode(bufferInfo.bufferName(), msg);
 #ifdef HAVE_QCA2
-  encMsg = encrypt(bufferInfo.bufferName(), encMsg);
+  putPrivmsg(serverEncode(bufferInfo.bufferName()), encMsg, network()->cipher(bufferInfo.bufferName()));
+#else
+  putPrivmsg(serverEncode(bufferInfo.bufferName()), encMsg);
 #endif
-
-  putPrivmsg(serverEncode(bufferInfo.bufferName()), encMsg, false);
   emit displayMsg(Message::Plain, bufferInfo.type(), bufferInfo.bufferName(), msg, network()->myNick(), Message::Self);
 }
 
@@ -452,6 +457,9 @@ void CoreUserInputHandler::handleSetkey(const BufferInfo &bufferInfo, const QStr
   if(!bufferInfo.isValid())
     return;
 
+  if(!Cipher::neededFeaturesAvailable())
+    return;
+
   QStringList parms = msg.split(' ', QString::SkipEmptyParts);
 
   if(parms.count() == 1 && !bufferInfo.bufferName().isEmpty())
@@ -483,6 +491,44 @@ void CoreUserInputHandler::handleSetkey(const BufferInfo &bufferInfo, const QStr
 #endif
 }
 
+void CoreUserInputHandler::handleShowkey(const BufferInfo &bufferInfo, const QString &msg) {
+#ifdef HAVE_QCA2
+  if(!bufferInfo.isValid())
+    return;
+
+  if(!Cipher::neededFeaturesAvailable())
+    return;
+
+  QStringList parms = msg.split(' ', QString::SkipEmptyParts);
+
+  if(parms.isEmpty() && !bufferInfo.bufferName().isEmpty())
+    parms.prepend(bufferInfo.bufferName());
+
+  if(parms.isEmpty()) {
+    emit displayMsg(Message::Info, bufferInfo.bufferName(), "",
+                    tr("[usage] /showkey <nick|channel> shows the encryption key for nick or channel or just /showkey when in a channel or query."));
+    return;
+  }
+
+  QString target = parms.at(0);
+  QByteArray key = network()->cipherKey(target);
+
+  if(key.isEmpty()) {
+    emit displayMsg(Message::Info, bufferInfo.bufferName(), tr("No key has been set for %1.").arg(target));
+    return;
+  }
+
+  emit displayMsg(Message::Info, bufferInfo.bufferName(), tr("The key for %1 is %2").arg(target).arg(QString(key)));
+
+#else
+  Q_UNUSED(msg)
+  emit displayMsg(Message::Error, bufferInfo.bufferName(), "", tr("Error: Setting an encryption key requires Quassel to have been built "
+                                                                  "with support for the Qt Cryptographic Architecture (QCA2) library. "
+                                                                  "Contact your distributor about a Quassel package with QCA2 "
+                                                                  "support, or rebuild Quassel with QCA2 present."));
+#endif
+}
+
 void CoreUserInputHandler::handleTopic(const BufferInfo &bufferInfo, const QString &msg) {
   if(bufferInfo.bufferName().isEmpty())
     return;
@@ -548,28 +594,54 @@ void CoreUserInputHandler::defaultHandler(QString cmd, const BufferInfo &bufferI
   emit putCmd(serverEncode(cmd.toUpper()), serverEncode(msg.split(" ")));
 }
 
-// TODO: handle cutoff of encrypted messages
-void CoreUserInputHandler::putPrivmsg(const QByteArray &target, const QByteArray &message, bool encrypted) {
-
-  QByteArray temp = message;
+void CoreUserInputHandler::putPrivmsg(const QByteArray &target, const QByteArray &message, Cipher *cipher) {
+  // Encrypted messages need special care. There's no clear relation between cleartext and encrypted message length,
+  // so we can't just compute the maxSplitPos. Instead, we need to loop through the splitpoints until the crypted
+  // version is short enough...
+  // TODO: check out how the various possible encryption methods behave length-wise and make
+  //       this clean by predicting the length of the crypted msg.
+  //       For example, blowfish-ebc seems to create 8-char chunks.
 
   static const char *cmd = "PRIVMSG";
-  int overrun = lastParamOverrun(cmd, QList<QByteArray>() << target << temp);
-  if(overrun) {
-    static const char *splitter = " .,-";
-    int maxSplitPos = temp.count() - overrun;
-    int splitPos = -1;
-    for(const char *splitChar = splitter; *splitChar != 0; splitChar++) {
-      splitPos = qMax(splitPos, temp.lastIndexOf(*splitChar, maxSplitPos));
+  static const char *splitter = " .,-";
+
+  int maxSplitPos = message.count();
+  int splitPos = maxSplitPos;
+  forever {
+    QByteArray crypted = message.left(splitPos);
+    bool isEncrypted = false;
+#ifdef HAVE_QCA2
+    if(cipher && !message.isEmpty()) {
+      isEncrypted = cipher->encrypt(crypted);
     }
-    if(splitPos <= 0) {
-      splitPos = maxSplitPos;
+#endif
+    int overrun = lastParamOverrun(cmd, QList<QByteArray>() << target << crypted);
+    if(overrun) {
+      // In case this is not an encrypted msg, we can just cut off at the end
+      if(!isEncrypted)
+        maxSplitPos = message.count() - overrun;
+
+      splitPos = -1;
+      for(const char *splitChar = splitter; *splitChar != 0; splitChar++) {
+        splitPos = qMax(splitPos, message.lastIndexOf(*splitChar, maxSplitPos) + 1); // keep split char on old line
+      }
+      if(splitPos <= 0 || splitPos > maxSplitPos)
+        splitPos = maxSplitPos;
+
+      maxSplitPos = splitPos - 1;
+      if(maxSplitPos <= 0) { // this should never happen, but who knows...
+        qWarning() << tr("[Error] Could not encrypt your message: %1").arg(message.data());
+        return;
+      }
+      continue;  // we never come back here for !encrypted!
     }
-    putCmd(cmd, QList<QByteArray>() << target << temp.left(splitPos));
-    putPrivmsg(target, temp.mid(splitPos), encrypted);
+
+    // now we have found a valid splitpos (or didn't need to split to begin with)
+    putCmd(cmd, QList<QByteArray>() << target << crypted);
+    if(splitPos < message.count())
+      putPrivmsg(target, message.mid(splitPos), cipher);
+
     return;
-  } else {
-    putCmd(cmd, QList<QByteArray>() << target << temp);
   }
 }
 
@@ -603,16 +675,25 @@ int CoreUserInputHandler::lastParamOverrun(const QString &cmd, const QList<QByte
 }
 
 #ifdef HAVE_QCA2
-QByteArray CoreUserInputHandler::encrypt(const QString &target, const QByteArray &message_) const {
+QByteArray CoreUserInputHandler::encrypt(const QString &target, const QByteArray &message_, bool *didEncrypt) const {
+  if(didEncrypt)
+    *didEncrypt = false;
+
   if(message_.isEmpty())
     return message_;
 
+  if(!Cipher::neededFeaturesAvailable())
+    return message_;
+
   Cipher *cipher = network()->cipher(target);
   if(!cipher)
     return message_;
 
   QByteArray message = message_;
-  cipher->encrypt(message);
+  bool result = cipher->encrypt(message);
+  if(didEncrypt)
+    *didEncrypt = result;
+
   return message;
 }
 #endif