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-rw-r--r--tdeioslave/smtp/smtp.cpp648
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diff --git a/tdeioslave/smtp/smtp.cpp b/tdeioslave/smtp/smtp.cpp
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+++ b/tdeioslave/smtp/smtp.cpp
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+/*
+ * Copyright (c) 2000, 2001 Alex Zepeda <[email protected]>
+ * Copyright (c) 2001 Michael H�ckel <[email protected]>
+ * Copyright (c) 2002 Aaron J. Seigo <[email protected]>
+ * Copyright (c) 2003 Marc Mutz <[email protected]>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <config.h>
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#include <stdio.h>
+
+#ifdef HAVE_LIBSASL2
+extern "C" {
+#include <sasl/sasl.h>
+}
+#endif
+
+#include "smtp.h"
+#include "request.h"
+#include "response.h"
+#include "transactionstate.h"
+#include "command.h"
+using KioSMTP::Capabilities;
+using KioSMTP::Command;
+using KioSMTP::EHLOCommand;
+using KioSMTP::AuthCommand;
+using KioSMTP::MailFromCommand;
+using KioSMTP::RcptToCommand;
+using KioSMTP::DataCommand;
+using KioSMTP::TransferCommand;
+using KioSMTP::Request;
+using KioSMTP::Response;
+using KioSMTP::TransactionState;
+
+#include <tdeemailsettings.h>
+#include <ksock.h>
+#include <kdebug.h>
+#include <kinstance.h>
+#include <tdeio/connection.h>
+#include <tdeio/slaveinterface.h>
+#include <tdelocale.h>
+
+#include <tqstring.h>
+#include <tqstringlist.h>
+#include <tqcstring.h>
+
+#include <memory>
+using std::auto_ptr;
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#include <netdb.h>
+
+#ifndef NI_NAMEREQD
+// FIXME for KDE 3.3: fake defintion
+// API design flaw in KExtendedSocket::resolve
+# define NI_NAMEREQD 0
+#endif
+
+
+extern "C" {
+ KDE_EXPORT int kdemain(int argc, char **argv);
+}
+
+int kdemain(int argc, char **argv)
+{
+ TDEInstance instance("tdeio_smtp");
+
+ if (argc != 4) {
+ fprintf(stderr,
+ "Usage: tdeio_smtp protocol domain-socket1 domain-socket2\n");
+ exit(-1);
+ }
+
+#ifdef HAVE_LIBSASL2
+ if ( sasl_client_init( NULL ) != SASL_OK ) {
+ fprintf(stderr, "SASL library initialization failed!\n");
+ exit(-1);
+ }
+#endif
+ SMTPProtocol slave( argv[2], argv[3], tqstricmp( argv[1], "smtps" ) == 0 );
+ slave.dispatchLoop();
+#ifdef HAVE_LIBSASL2
+ sasl_done();
+#endif
+ return 0;
+}
+
+SMTPProtocol::SMTPProtocol(const TQCString & pool, const TQCString & app,
+ bool useSSL)
+: TCPSlaveBase(useSSL ? 465 : 25,
+ useSSL ? "smtps" : "smtp",
+ pool, app, useSSL),
+ m_iOldPort(0),
+ m_opened(false)
+{
+ //kdDebug(7112) << "SMTPProtocol::SMTPProtocol" << endl;
+ mPendingCommandQueue.setAutoDelete( true );
+ mSentCommandQueue.setAutoDelete( true );
+}
+
+unsigned int SMTPProtocol::sendBufferSize() const {
+ // ### how much is eaten by SSL/TLS overhead?
+ const int fd = fileno( fp );
+ int value = -1;
+ kde_socklen_t len = sizeof(value);
+ if ( fd < 0 || ::getsockopt( fd, SOL_SOCKET, SO_SNDBUF, (char*)&value, &len ) )
+ value = 1024; // let's be conservative
+ kdDebug(7112) << "send buffer size seems to be " << value << " octets." << endl;
+ return value > 0 ? value : 1024 ;
+}
+
+SMTPProtocol::~SMTPProtocol() {
+ //kdDebug(7112) << "SMTPProtocol::~SMTPProtocol" << endl;
+ smtp_close();
+}
+
+void SMTPProtocol::openConnection() {
+ if ( smtp_open() )
+ connected();
+ else
+ closeConnection();
+}
+
+void SMTPProtocol::closeConnection() {
+ smtp_close();
+}
+
+void SMTPProtocol::special( const TQByteArray & aData ) {
+ TQDataStream s( aData, IO_ReadOnly );
+ int what;
+ s >> what;
+ if ( what == 'c' ) {
+ infoMessage( createSpecialResponse() );
+#ifndef NDEBUG
+ kdDebug(7112) << "special('c') returns \"" << createSpecialResponse() << "\"" << endl;
+#endif
+ } else if ( what == 'N' ) {
+ if ( !execute( Command::NOOP ) )
+ return;
+ } else {
+ error( TDEIO::ERR_INTERNAL,
+ i18n("The application sent an invalid request.") );
+ return;
+ }
+ finished();
+}
+
+
+// Usage: smtp://smtphost:port/[email protected]&subject=blah
+// If smtphost is the name of a profile, it'll use the information
+// provided by that profile. If it's not a profile name, it'll use it as
+// nature intended.
+// One can also specify in the query:
+// headers=0 (turns off header generation)
+// to=emailaddress
+// cc=emailaddress
+// bcc=emailaddress
+// subject=text
+// profile=text (this will override the "host" setting)
+// hostname=text (used in the HELO)
+// body={7bit,8bit} (default: 7bit; 8bit activates the use of the 8BITMIME SMTP extension)
+void SMTPProtocol::put(const KURL & url, int /*permissions */ ,
+ bool /*overwrite */ , bool /*resume */ )
+{
+ Request request = Request::fromURL( url ); // parse settings from URL's query
+
+ KEMailSettings mset;
+ KURL open_url = url;
+ if ( !request.hasProfile() ) {
+ //kdDebug(7112) << "tdeio_smtp: Profile is null" << endl;
+ bool hasProfile = mset.profiles().contains( open_url.host() );
+ if ( hasProfile ) {
+ mset.setProfile(open_url.host());
+ open_url.setHost(mset.getSetting(KEMailSettings::OutServer));
+ m_sUser = mset.getSetting(KEMailSettings::OutServerLogin);
+ m_sPass = mset.getSetting(KEMailSettings::OutServerPass);
+
+ if (m_sUser.isEmpty())
+ m_sUser = TQString::null;
+ if (m_sPass.isEmpty())
+ m_sPass = TQString::null;
+ open_url.setUser(m_sUser);
+ open_url.setPass(m_sPass);
+ m_sServer = open_url.host();
+ m_iPort = open_url.port();
+ }
+ else {
+ mset.setProfile(mset.defaultProfileName());
+ }
+ }
+ else {
+ mset.setProfile( request.profileName() );
+ }
+
+ // Check KEMailSettings to see if we've specified an E-Mail address
+ // if that worked, check to see if we've specified a real name
+ // and then format accordingly (either: [email protected] or
+ // Real Name <[email protected]>)
+ if ( !request.hasFromAddress() ) {
+ const TQString from = mset.getSetting( KEMailSettings::EmailAddress );
+ if ( !from.isNull() )
+ request.setFromAddress( from );
+ else if ( request.emitHeaders() ) {
+ error(TDEIO::ERR_NO_CONTENT, i18n("The sender address is missing."));
+ return;
+ }
+ }
+
+ if ( !smtp_open( request.heloHostname() ) )
+ {
+ error(TDEIO::ERR_SERVICE_NOT_AVAILABLE,
+ i18n("SMTPProtocol::smtp_open failed (%1)") // ### better error message?
+ .arg(open_url.path()));
+ return;
+ }
+
+ if ( request.is8BitBody()
+ && !haveCapability("8BITMIME") && metaData("8bitmime") != "on" ) {
+ error( TDEIO::ERR_SERVICE_NOT_AVAILABLE,
+ i18n("Your server does not support sending of 8-bit messages.\n"
+ "Please use base64 or quoted-printable encoding.") );
+ return;
+ }
+
+ queueCommand( new MailFromCommand( this, request.fromAddress().latin1(),
+ request.is8BitBody(), request.size() ) );
+
+ // Loop through our To and CC recipients, and send the proper
+ // SMTP commands, for the benefit of the server.
+ TQStringList recipients = request.recipients();
+ for ( TQStringList::const_iterator it = recipients.begin() ; it != recipients.end() ; ++it )
+ queueCommand( new RcptToCommand( this, (*it).latin1() ) );
+
+ queueCommand( Command::DATA );
+ queueCommand( new TransferCommand( this, request.headerFields( mset.getSetting( KEMailSettings::RealName ) ) ) );
+
+ TransactionState ts;
+ if ( !executeQueuedCommands( &ts ) ) {
+ if ( ts.errorCode() )
+ error( ts.errorCode(), ts.errorMessage() );
+ } else
+ finished();
+}
+
+
+void SMTPProtocol::setHost(const TQString & host, int port,
+ const TQString & user, const TQString & pass)
+{
+ m_sServer = host;
+ m_iPort = port;
+ m_sUser = user;
+ m_sPass = pass;
+}
+
+bool SMTPProtocol::sendCommandLine( const TQCString & cmdline ) {
+ //kdDebug( cmdline.length() < 4096, 7112) << "C: " << cmdline.data();
+ //kdDebug( cmdline.length() >= 4096, 7112) << "C: <" << cmdline.length() << " bytes>" << endl;
+ kdDebug( 7112) << "C: <" << cmdline.length() << " bytes>" << endl;
+ ssize_t cmdline_len = cmdline.length();
+ if ( write( cmdline.data(), cmdline_len ) != cmdline_len ) {
+ error( TDEIO::ERR_COULD_NOT_WRITE, m_sServer );
+ return false;
+ }
+ return true;
+}
+
+Response SMTPProtocol::getResponse( bool * ok ) {
+
+ if ( ok )
+ *ok = false;
+
+ Response response;
+ char buf[2048];
+
+ int recv_len = 0;
+ do {
+ // wait for data...
+ if ( !waitForResponse( 600 ) ) {
+ error( TDEIO::ERR_SERVER_TIMEOUT, m_sServer );
+ return response;
+ }
+
+ // ...read data...
+ recv_len = readLine( buf, sizeof(buf) - 1 );
+ if ( recv_len < 1 && !isConnectionValid() ) {
+ error( TDEIO::ERR_CONNECTION_BROKEN, m_sServer );
+ return response;
+ }
+
+ kdDebug(7112) << "S: " << TQCString( buf, recv_len + 1 ).data();
+ // ...and parse lines...
+ response.parseLine( buf, recv_len );
+
+ // ...until the response is complete or the parser is so confused
+ // that it doesn't think a RSET would help anymore:
+ } while ( !response.isComplete() && response.isWellFormed() );
+
+ if ( !response.isValid() ) {
+ error( TDEIO::ERR_NO_CONTENT, i18n("Invalid SMTP response (%1) received.").arg(response.code()) );
+ return response;
+ }
+
+ if ( ok )
+ *ok = true;
+
+ return response;
+}
+
+bool SMTPProtocol::executeQueuedCommands( TransactionState * ts ) {
+ assert( ts );
+
+ kdDebug( canPipelineCommands(), 7112 ) << "using pipelining" << endl;
+
+ while( !mPendingCommandQueue.isEmpty() ) {
+ TQCString cmdline = collectPipelineCommands( ts );
+ if ( ts->failedFatally() ) {
+ smtp_close( false ); // _hard_ shutdown
+ return false;
+ }
+ if ( ts->failed() )
+ break;
+ if ( cmdline.isEmpty() )
+ continue;
+ if ( !sendCommandLine( cmdline ) ||
+ !batchProcessResponses( ts ) ||
+ ts->failedFatally() ) {
+ smtp_close( false ); // _hard_ shutdown
+ return false;
+ }
+ }
+
+ if ( ts->failed() ) {
+ if ( !execute( Command::RSET ) )
+ smtp_close( false );
+ return false;
+ }
+ return true;
+}
+
+TQCString SMTPProtocol::collectPipelineCommands( TransactionState * ts ) {
+ assert( ts );
+
+ TQCString cmdLine;
+ unsigned int cmdLine_len = 0;
+
+ while ( mPendingCommandQueue.head() ) {
+
+ Command * cmd = mPendingCommandQueue.head();
+
+ if ( cmd->doNotExecute( ts ) ) {
+ delete mPendingCommandQueue.dequeue();
+ if ( cmdLine_len )
+ break;
+ else
+ continue;
+ }
+
+ if ( cmdLine_len && cmd->mustBeFirstInPipeline() )
+ break;
+
+ if ( cmdLine_len && !canPipelineCommands() )
+ break;
+
+ while ( !cmd->isComplete() && !cmd->needsResponse() ) {
+ const TQCString currentCmdLine = cmd->nextCommandLine( ts );
+ if ( ts->failedFatally() )
+ return cmdLine;
+ const unsigned int currentCmdLine_len = currentCmdLine.length();
+
+ if ( cmdLine_len && cmdLine_len + currentCmdLine_len > sendBufferSize() ) {
+ // must all fit into the send buffer, else connection deadlocks,
+ // but we need to have at least _one_ command to send
+ cmd->ungetCommandLine( currentCmdLine, ts );
+ return cmdLine;
+ }
+ cmdLine_len += currentCmdLine_len;
+ cmdLine += currentCmdLine;
+ }
+
+ mSentCommandQueue.enqueue( mPendingCommandQueue.dequeue() );
+
+ if ( cmd->mustBeLastInPipeline() )
+ break;
+ }
+
+ return cmdLine;
+}
+
+bool SMTPProtocol::batchProcessResponses( TransactionState * ts ) {
+ assert( ts );
+
+ while ( !mSentCommandQueue.isEmpty() ) {
+
+ Command * cmd = mSentCommandQueue.head();
+ assert( cmd->isComplete() );
+
+ bool ok = false;
+ Response r = getResponse( &ok );
+ if ( !ok )
+ return false;
+ cmd->processResponse( r, ts );
+ if ( ts->failedFatally() )
+ return false;
+
+ mSentCommandQueue.remove();
+ }
+
+ return true;
+}
+
+void SMTPProtocol::queueCommand( int type ) {
+ queueCommand( Command::createSimpleCommand( type, this ) );
+}
+
+bool SMTPProtocol::execute( int type, TransactionState * ts ) {
+ auto_ptr<Command> cmd( Command::createSimpleCommand( type, this ) );
+ kdFatal( !cmd.get(), 7112 ) << "Command::createSimpleCommand( " << type << " ) returned null!" << endl;
+ return execute( cmd.get(), ts );
+}
+
+// ### fold into pipelining engine? How? (execute() is often called
+// ### when command queues are _not_ empty!)
+bool SMTPProtocol::execute( Command * cmd, TransactionState * ts )
+{
+ kdFatal( !cmd, 7112 ) << "SMTPProtocol::execute() called with no command to run!" << endl;
+
+ if (!cmd)
+ return false;
+
+ if ( cmd->doNotExecute( ts ) )
+ return true;
+
+ do {
+ while ( !cmd->isComplete() && !cmd->needsResponse() ) {
+ const TQCString cmdLine = cmd->nextCommandLine( ts );
+ if ( ts && ts->failedFatally() ) {
+ smtp_close( false );
+ return false;
+ }
+ if ( cmdLine.isEmpty() )
+ continue;
+ if ( !sendCommandLine( cmdLine ) ) {
+ smtp_close( false );
+ return false;
+ }
+ }
+
+ bool ok = false;
+ Response r = getResponse( &ok );
+ if ( !ok ) {
+ smtp_close( false );
+ return false;
+ }
+ if ( !cmd->processResponse( r, ts ) ) {
+ if ( ts && ts->failedFatally() ||
+ cmd->closeConnectionOnError() ||
+ !execute( Command::RSET ) )
+ smtp_close( false );
+ return false;
+ }
+ } while ( !cmd->isComplete() );
+
+ return true;
+}
+
+bool SMTPProtocol::smtp_open(const TQString& fakeHostname)
+{
+ if (m_opened &&
+ m_iOldPort == port(m_iPort) &&
+ m_sOldServer == m_sServer &&
+ m_sOldUser == m_sUser &&
+ (fakeHostname.isNull() || m_hostname == fakeHostname))
+ return true;
+
+ smtp_close();
+ if (!connectToHost(m_sServer, m_iPort))
+ return false; // connectToHost has already send an error message.
+ m_opened = true;
+
+ bool ok = false;
+ Response greeting = getResponse( &ok );
+ if ( !ok || !greeting.isOk() )
+ {
+ if ( ok )
+ error( TDEIO::ERR_COULD_NOT_LOGIN,
+ i18n("The server did not accept the connection.\n"
+ "%1").arg( greeting.errorMessage() ) );
+ smtp_close();
+ return false;
+ }
+
+ if (!fakeHostname.isNull())
+ {
+ m_hostname = fakeHostname;
+ }
+ else
+ {
+ TQString tmpPort;
+ TDESocketAddress* addr = KExtendedSocket::localAddress(m_iSock);
+ // perform name lookup. NI_NAMEREQD means: don't return a numeric
+ // value (we need to know when we get have the IP address, so we
+ // can enclose it in sqaure brackets (domain-literal). Failure to
+ // do so is normally harmless with IPv4, but fails for IPv6:
+ if (KExtendedSocket::resolve(addr, m_hostname, tmpPort, NI_NAMEREQD) != 0)
+ // FQDN resolution failed
+ // use the IP address as domain-literal
+ m_hostname = '[' + addr->nodeName() + ']';
+ delete addr;
+
+ if(m_hostname.isEmpty())
+ {
+ m_hostname = "localhost.invalid";
+ }
+ }
+
+ EHLOCommand ehloCmdPreTLS( this, m_hostname );
+ if ( !execute( &ehloCmdPreTLS ) ) {
+ smtp_close();
+ return false;
+ }
+
+ if ( ( haveCapability("STARTTLS") && canUseTLS() && metaData("tls") != "off" )
+ || metaData("tls") == "on" ) {
+ // For now we're gonna force it on.
+
+ if ( execute( Command::STARTTLS ) ) {
+
+ // re-issue EHLO to refresh the capability list (could be have
+ // been faked before TLS was enabled):
+ EHLOCommand ehloCmdPostTLS( this, m_hostname );
+ if ( !execute( &ehloCmdPostTLS ) ) {
+ smtp_close();
+ return false;
+ }
+ }
+ }
+ // Now we try and login
+ if (!authenticate()) {
+ smtp_close();
+ return false;
+ }
+
+ m_iOldPort = m_iPort;
+ m_sOldServer = m_sServer;
+ m_sOldUser = m_sUser;
+ m_sOldPass = m_sPass;
+
+ return true;
+}
+
+bool SMTPProtocol::authenticate()
+{
+ // return with success if the server doesn't support SMTP-AUTH or an user
+ // name is not specified and metadata doesn't tell us to force it.
+ if ( (m_sUser.isEmpty() || !haveCapability( "AUTH" )) &&
+ metaData( "sasl" ).isEmpty() ) return true;
+
+ TDEIO::AuthInfo authInfo;
+ authInfo.username = m_sUser;
+ authInfo.password = m_sPass;
+ authInfo.prompt = i18n("Username and password for your SMTP account:");
+
+ TQStringList strList;
+
+ if (!metaData("sasl").isEmpty())
+ strList.append(metaData("sasl").latin1());
+ else
+ strList = mCapabilities.saslMethodsQSL();
+
+ AuthCommand authCmd( this, strList.join(" ").latin1(), m_sServer, authInfo );
+ bool ret = execute( &authCmd );
+ m_sUser = authInfo.username;
+ m_sPass = authInfo.password;
+ return ret;
+}
+
+void SMTPProtocol::parseFeatures( const Response & ehloResponse ) {
+ mCapabilities = Capabilities::fromResponse( ehloResponse );
+
+ TQString category = usingTLS() ? "TLS" : usingSSL() ? "SSL" : "PLAIN" ;
+ setMetaData( category + " AUTH METHODS", mCapabilities.authMethodMetaData() );
+ setMetaData( category + " CAPABILITIES", mCapabilities.asMetaDataString() );
+#ifndef NDEBUG
+ kdDebug(7112) << "parseFeatures() " << category << " AUTH METHODS:"
+ << '\n' + mCapabilities.authMethodMetaData() << endl
+ << "parseFeatures() " << category << " CAPABILITIES:"
+ << '\n' + mCapabilities.asMetaDataString() << endl;
+#endif
+}
+
+void SMTPProtocol::smtp_close( bool nice ) {
+ if (!m_opened) // We're already closed
+ return;
+
+ if ( nice )
+ execute( Command::QUIT );
+ kdDebug( 7112 ) << "closing connection" << endl;
+ closeDescriptor();
+ m_sOldServer = TQString::null;
+ m_sOldUser = TQString::null;
+ m_sOldPass = TQString::null;
+
+ mCapabilities.clear();
+ mPendingCommandQueue.clear();
+ mSentCommandQueue.clear();
+
+ m_opened = false;
+}
+
+void SMTPProtocol::stat(const KURL & url)
+{
+ TQString path = url.path();
+ error(TDEIO::ERR_DOES_NOT_EXIST, url.path());
+}
+
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-27 07:34:47 +0000