TLS support for SMTP

2 files changed, 60 insertions, 8 deletions

diff --git a/noncore/net/mail/libmailwrapper/smtpwrapper.cpp b/noncore/net/mail/libmailwrapper/smtpwrapper.cpp
index e8db9ca..3ab6b77 100644
--- a/noncore/net/mail/libmailwrapper/smtpwrapper.cpp
+++ b/noncore/net/mail/libmailwrapper/smtpwrapper.cpp
@@ -30,64 +30,66 @@ SMTPwrapper::SMTPwrapper( Settings *s )
     Config cfg( "mail" );
     cfg.setGroup( "Status" );
     m_queuedMail =  cfg.readNumEntry( "outgoing", 0 );
     emit queuedMails( m_queuedMail );
     connect( this, SIGNAL( queuedMails( int ) ), this, SLOT( emitQCop( int ) )  );
 }
 
 void SMTPwrapper::emitQCop( int queued ) {
     QCopEnvelope env( "QPE/Pim", "outgoingMails(int)" );
     env << queued;
 }
 
 QString SMTPwrapper::mailsmtpError( int errnum ) {
     switch ( errnum ) {
     case MAILSMTP_NO_ERROR:
         return tr( "No error" );
     case MAILSMTP_ERROR_UNEXPECTED_CODE:
         return tr( "Unexpected error code" );
     case MAILSMTP_ERROR_SERVICE_NOT_AVAILABLE:
         return tr( "Service not available" );
     case MAILSMTP_ERROR_STREAM:
         return tr( "Stream error" );
     case MAILSMTP_ERROR_HOSTNAME:
         return tr( "gethostname() failed" );
     case MAILSMTP_ERROR_NOT_IMPLEMENTED:
         return tr( "Not implemented" );
     case MAILSMTP_ERROR_ACTION_NOT_TAKEN:
         return tr( "Error, action not taken" );
     case MAILSMTP_ERROR_EXCEED_STORAGE_ALLOCATION:
         return tr( "Data exceeds storage allocation" );
     case MAILSMTP_ERROR_IN_PROCESSING:
         return tr( "Error in processing" );
+    case MAILSMTP_ERROR_STARTTLS_NOT_SUPPORTED:
+        return tr( "Starttls not supported" );
         //      case MAILSMTP_ERROR_INSUFFISANT_SYSTEM_STORAGE:
         //        return tr( "Insufficient system storage" );
     case MAILSMTP_ERROR_MAILBOX_UNAVAILABLE:
         return tr( "Mailbox unavailable" );
     case MAILSMTP_ERROR_MAILBOX_NAME_NOT_ALLOWED:
         return tr( "Mailbox name not allowed" );
     case MAILSMTP_ERROR_BAD_SEQUENCE_OF_COMMAND:
         return tr( "Bad command sequence" );
     case MAILSMTP_ERROR_USER_NOT_LOCAL:
         return tr( "User not local" );
     case MAILSMTP_ERROR_TRANSACTION_FAILED:
         return tr( "Transaction failed" );
     case MAILSMTP_ERROR_MEMORY:
         return tr( "Memory error" );
     case MAILSMTP_ERROR_CONNECTION_REFUSED:
         return tr( "Connection refused" );
     default:
         return tr( "Unknown error code" );
     }
 }
 
 mailimf_mailbox *SMTPwrapper::newMailbox(const QString&name, const QString&mail ) {
     return mailimf_mailbox_new( strdup( name.latin1() ),
                                 strdup( mail.latin1() ) );
 }
 
 mailimf_address_list *SMTPwrapper::parseAddresses(const QString&addr ) {
     mailimf_address_list *addresses;
 
     if ( addr.isEmpty() )
         return NULL;
 
@@ -536,115 +538,158 @@ void SMTPwrapper::smtpSend( mailmime *mail,bool later, SMTPaccount *smtp ) {
         if (data)
             free( data );
         Config cfg( "mail" );
         cfg.setGroup( "Status" );
         cfg.writeEntry( "outgoing", ++m_queuedMail );
         emit queuedMails( m_queuedMail );
         return;
     }
     from = getFrom( mail );
     rcpts = createRcptList( mail->mm_data.mm_message.mm_fields );
     smtpSend(from,rcpts,data,size,smtp);
     if (data) {
         free(data);
     }
     if (from) {
         free(from);
     }
     if (rcpts)
         smtp_address_list_free( rcpts );
 }
 
 void SMTPwrapper::storeFailedMail(const char*data,unsigned int size, const char*failuremessage)
 {
     if (data) {
         storeMail(data,size,"Sendfailed");
     }
     if (failuremessage) {
         QMessageBox::critical(0,tr("Error sending mail"),
             tr("<center>%1</center>").arg(failuremessage));
     }
 }
 
+int SMTPwrapper::start_smtp_tls(mailsmtp *session)
+{
+    if (!session) {
+        return MAILSMTP_ERROR_IN_PROCESSING;
+    }
+    int err = mailesmtp_starttls(session);
+    if (err != MAILSMTP_NO_ERROR) return err;
+    mailstream_low * low;
+    mailstream_low * new_low;
+    low = mailstream_get_low(session->stream);
+    if (!low) {
+        return MAILSMTP_ERROR_IN_PROCESSING;
+    }
+    int fd = mailstream_low_get_fd(low);
+    if (fd > -1 && (new_low = mailstream_low_ssl_open(fd))!=0) {
+        mailstream_low_free(low);
+        mailstream_set_low(session->stream, new_low);
+    } else {
+        return MAILSMTP_ERROR_IN_PROCESSING;
+    }
+    return err;
+}
+
 int SMTPwrapper::smtpSend(char*from,clist*rcpts,const char*data,size_t size, SMTPaccount *smtp ) {
     const char *server, *user, *pass;
     bool ssl;
     uint16_t port;
     mailsmtp *session;
     int err,result;
     QString failuretext = "";
 
     result = 1;
     server = user = pass = 0;
     server = smtp->getServer().latin1();
 
     // FIXME: currently only TLS and Plain work.
 
     ssl = false;
+    bool try_tls = true;
+    bool force_tls=false;
 
     if  ( smtp->ConnectionType() == 2 ) {
         ssl = true;
+        try_tls = false;
+    } else if (smtp->ConnectionType() == 1) {
+        force_tls = true;
     }
 
     port = smtp->getPort().toUInt();
 
     session = mailsmtp_new( 20, &progress );
     if ( session == NULL ) {
         /* no failure message cause this happens when problems with memory - than we
            we can not display any messagebox */
         return 0;
     }
 
     qDebug( "Servername %s at port %i", server, port );
     if ( ssl ) {
         qDebug( "SSL session" );
         err = mailsmtp_ssl_connect( session, server, port );
     } else {
         qDebug( "No SSL session" );
         err = mailsmtp_socket_connect( session, server, port );
     }
     if ( err != MAILSMTP_NO_ERROR ) {
         qDebug("Error init connection");
         failuretext = tr("Error init SMTP connection: %1").arg(mailsmtpError(err));
         result = 0;
     }
 
+    /* switch to tls after init 'cause there it will send the ehlo */
     if (result) {
         err = mailsmtp_init( session );
         if (err != MAILSMTP_NO_ERROR) {
             result = 0;
             failuretext = tr("Error init SMTP connection: %1").arg(mailsmtpError(err));
         }
     }
 
+    if (try_tls) {
+        err = start_smtp_tls(session);
+        if (err != MAILSMTP_NO_ERROR) {
+            try_tls = false;
+        } else {
+            err = mailesmtp_ehlo(session);
+        }
+    }
+
+    if (!try_tls && force_tls) {
+        result = 0;
+        failuretext = tr("Error init SMTP tls: %1").arg(mailsmtpError(err));
+    }
+
     if (result==1 && smtp->getLogin() ) {
         qDebug("smtp with auth");
         if ( smtp->getUser().isEmpty() || smtp->getPassword().isEmpty() ) {
             // get'em
             LoginDialog login( smtp->getUser(), smtp->getPassword(), NULL, 0, true );
             login.show();
             if ( QDialog::Accepted == login.exec() ) {
                 // ok
                 user = login.getUser().latin1();
                 pass = login.getPassword().latin1();
             } else {
                 result = 0;
                 failuretext=tr("Login aborted - storing mail to localfolder");
             }
         } else {
             user = smtp->getUser().latin1();
             pass = smtp->getPassword().latin1();
         }
         qDebug( "session->auth: %i", session->auth);
         if (result) {
             err = mailsmtp_auth( session, (char*)user, (char*)pass );
             if ( err == MAILSMTP_NO_ERROR ) {
                 qDebug("auth ok");
             } else {
                 failuretext = tr("Authentification failed");
                 result = 0;
             }
         }
     }
 
     if (result) {
         err = mailsmtp_send( session, from, rcpts, data, size );
@@ -708,104 +753,108 @@ int SMTPwrapper::sendQueuedMail(AbstractMail*wrap,SMTPaccount*smtp,RecMail*which
         delete data;
         delete wrap;
         return 0;
     }
 
     rcpts = createRcptList( fields );
     ffrom = getField(fields, MAILIMF_FIELD_FROM );
     from = getFrom(ffrom);
 
     if (rcpts && from) {
         res = smtpSend(from,rcpts,data->Content(),data->Length(),smtp );
     }
     if (fields) {
         mailimf_fields_free(fields);
         fields = 0;
     }
     if (data) {
         delete data;
     }
     if (from) {
         free(from);
     }
     if (rcpts) {
         smtp_address_list_free( rcpts );
     }
     return res;
 }
 
 /* this is a special fun */
 bool SMTPwrapper::flushOutbox(SMTPaccount*smtp) {
     bool returnValue = true;
 
-    if (!smtp)
+    qDebug("Sending the queue");
+    if (!smtp) {
+        qDebug("No smtp account given");
         return false;
+    }
 
     bool reset_user_value = false;
     QString localfolders = AbstractMail::defaultLocalfolder();
     AbstractMail*wrap = AbstractMail::getWrapper(localfolders);
     if (!wrap) {
         qDebug("memory error");
         return false;
     }
     QString oldPw, oldUser;
     QList<RecMail> mailsToSend;
     QList<RecMail> mailsToRemove;
     QString mbox("Outgoing");
     wrap->listMessages(mbox,mailsToSend);
     if (mailsToSend.count()==0) {
         delete wrap;
+        qDebug("No mails to send");
         return false;
     }
-    
+
     oldPw = smtp->getPassword();
     oldUser = smtp->getUser();
     if (smtp->getLogin() && (smtp->getUser().isEmpty() || smtp->getPassword().isEmpty()) ) {
         // get'em
         QString user,pass;
         LoginDialog login( smtp->getUser(), smtp->getPassword(), NULL, 0, true );
         login.show();
         if ( QDialog::Accepted == login.exec() ) {
             // ok
             user = login.getUser().latin1();
             pass = login.getPassword().latin1();
             reset_user_value = true;
             smtp->setUser(user);
             smtp->setPassword(pass);
         } else {
             return true;
         }
     }
 
-    
+
     mailsToSend.setAutoDelete(false);
     sendProgress = new progressMailSend();
     sendProgress->show();
     sendProgress->setMaxMails(mailsToSend.count());
 
     while (mailsToSend.count()>0) {
         if (sendQueuedMail(wrap,smtp,mailsToSend.at(0))==0) {
             QMessageBox::critical(0,tr("Error sending mail"),
                                   tr("Error sending queued mail - breaking"));
             returnValue = false;
             break;
         }
         mailsToRemove.append(mailsToSend.at(0));
         mailsToSend.removeFirst();
         sendProgress->setCurrentMails(mailsToRemove.count());
     }
     if (reset_user_value) {
         smtp->setUser(oldUser);
         smtp->setPassword(oldPw);
     }
     Config cfg( "mail" );
     cfg.setGroup( "Status" );
     m_queuedMail = 0;
     cfg.writeEntry( "outgoing", m_queuedMail );
     emit queuedMails( m_queuedMail );
     sendProgress->hide();
     delete sendProgress;
     sendProgress = 0;
     wrap->deleteMails(mbox,mailsToRemove);
     mailsToSend.setAutoDelete(true);
     delete wrap;
     return returnValue;
diff --git a/noncore/net/mail/libmailwrapper/smtpwrapper.h b/noncore/net/mail/libmailwrapper/smtpwrapper.h
index 89826d9..75e4891 100644
--- a/noncore/net/mail/libmailwrapper/smtpwrapper.h
+++ b/noncore/net/mail/libmailwrapper/smtpwrapper.h
@@ -1,73 +1,76 @@
 #ifndef SMTPwrapper_H
 #define SMTPwrapper_H
 
 #include <qpe/applnk.h>
 
 #include <qbitarray.h>
 #include <qdatetime.h>
 #include <libetpan/clist.h>
 
 #include "settings.h"
 
 class Mail;
 class AbstractMail;
 class RecMail;
 class Attachment;
 struct mailimf_fields;
 struct mailimf_field;
 struct mailimf_mailbox;
 struct mailmime;
 struct mailimf_address_list;
 class progressMailSend;
+struct mailsmtp;
 
 class SMTPwrapper : public QObject
 {
     Q_OBJECT
 
 public:
-    SMTPwrapper( Settings *s ); 
+    SMTPwrapper( Settings *s );
     virtual ~SMTPwrapper(){}
     void sendMail(const Mail& mail,SMTPaccount*smtp,bool later=false );
     bool flushOutbox(SMTPaccount*smtp);
 
     static progressMailSend*sendProgress;
 
 signals:
-    void queuedMails( int );  
+    void queuedMails( int );
 
 protected:
     mailimf_mailbox *newMailbox(const QString&name,const QString&mail );
     mailimf_fields *createImfFields(const Mail &mail );
     mailmime *createMimeMail(const Mail&mail );
-    
+
     mailimf_address_list *parseAddresses(const QString&addr );
     void addFileParts( mailmime *message,const QList<Attachment>&files );
     mailmime *buildTxtPart(const QString&str );
     mailmime *buildFilePart(const QString&filename,const QString&mimetype,const QString&content);
     void smtpSend( mailmime *mail,bool later, SMTPaccount *smtp );
     clist *createRcptList( mailimf_fields *fields );
-    
+
     static void storeMail(const char*mail, size_t length, const QString&box);
     static QString mailsmtpError( int err );
     static void progress( size_t current, size_t maximum );
     static void addRcpts( clist *list, mailimf_address_list *addr_list );
     static char *getFrom( mailmime *mail );
     static char *getFrom( mailimf_field *ffrom);
     static mailimf_field *getField( mailimf_fields *fields, int type );
+    static int start_smtp_tls(mailsmtp *session);
+
     int smtpSend(char*from,clist*rcpts,const char*data,size_t size, SMTPaccount *smtp );
 
     void storeMail(mailmime*mail, const QString&box);
     Settings *settings;
-    
+
     int sendQueuedMail(AbstractMail*wrap,SMTPaccount*smtp,RecMail*which);
     void storeFailedMail(const char*data,unsigned int size, const char*failuremessage);
 
     int m_queuedMail;
     static const char* USER_AGENT;
 
 protected slots:
    void emitQCop( int queued );
 
 };
 
 #endif