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KMIME Library

kmime_headers.cpp

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/*  -*- c++ -*-
    kmime_headers.cpp

    KMime, the KDE Internet mail/usenet news message library.
    Copyright (c) 2001-2002 the KMime authors.
    See file AUTHORS for details
    Copyright (c) 2006 Volker Krause <vkrause@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/
#include "kmime_headers.h"
#include "kmime_headers_p.h"

#include "kmime_util.h"
#include "kmime_util_p.h"
#include "kmime_content.h"
#include "kmime_codecs.h"
#include "kmime_header_parsing.h"
#include "kmime_headerfactory_p.h"
#include "kmime_warning.h"

#include <QtCore/QTextCodec>
#include <QtCore/QString>
#include <QtCore/QStringList>

#include <kglobal.h>
#include <kcharsets.h>

#include <assert.h>
#include <ctype.h>

template <typename T>
bool registerHeaderHelper()
{
  const T dummy;
  if( QByteArray( dummy.type() ).isEmpty() ) {
    // This is a generic header.
    return false;
  }
  return KMime::HeaderFactory::self()->registerHeader<T>();
}

// macro to register a header with HeaderFactory
#define kmime_register_header( subclass )                             \
namespace { const bool dummyForRegistering##subclass = registerHeaderHelper<subclass>(); }

// macro to generate a default constructor implementation
#define kmime_mk_trivial_ctor( subclass, baseclass )                  \
subclass::subclass( Content *parent ) : baseclass( parent )           \
{                                                                     \
  clear();                                                            \
}                                                                     \
                                                                      \
subclass::subclass( Content *parent, const QByteArray &s ) : baseclass( parent ) \
{                                                                     \
  from7BitString( s );                                                \
}                                                                     \
                                                                      \
subclass::subclass( Content *parent, const QString &s, const QByteArray &charset ) : \
  baseclass( parent )                                                 \
{                                                                     \
  fromUnicodeString( s, charset );                                    \
}                                                                     \
                                                                      \
subclass::~subclass() {}                                              \
                                                                      \
kmime_register_header( subclass )
// end kmime_mk_trivial_ctor


#define kmime_mk_trivial_ctor_with_dptr( subclass, baseclass ) \
subclass::subclass( Content *parent ) : baseclass( new subclass##Private, parent ) \
{                                                                     \
  clear();                                                            \
}                                                                     \
                                                                      \
subclass::subclass( Content *parent, const QByteArray &s ) : baseclass( new subclass##Private, parent ) \
{                                                                     \
  from7BitString( s );                                                \
}                                                                     \
                                                                      \
subclass::subclass( Content *parent, const QString &s, const QByteArray &charset ) : \
  baseclass( new subclass##Private, parent )                          \
{                                                                     \
  fromUnicodeString( s, charset );                                    \
}                                                                     \
                                                                      \
subclass::~subclass() {}                                              \
                                                                      \
kmime_register_header( subclass )
// end kmime_mk_trivial_ctor_with_dptr


#define kmime_mk_trivial_ctor_with_name( subclass, baseclass, name )  \
kmime_mk_trivial_ctor( subclass, baseclass )                          \
                                                                      \
const char *subclass::type() const                                    \
{                                                                     \
  return staticType();                                                \
}                                                                     \
const char *subclass::staticType() { return #name; }

#define kmime_mk_trivial_ctor_with_name_and_dptr( subclass, baseclass, name ) \
kmime_mk_trivial_ctor_with_dptr( subclass, baseclass ) \
const char *subclass::type() const { return staticType(); } \
const char *subclass::staticType() { return #name; }

#define kmime_mk_dptr_ctor( subclass, baseclass ) \
subclass::subclass( subclass##Private *d, KMime::Content *parent ) : baseclass( d, parent ) {}

using namespace KMime;
using namespace KMime::Headers;
using namespace KMime::Types;
using namespace KMime::HeaderParsing;

namespace KMime {
namespace Headers {
//-----<Base>----------------------------------
Base::Base( KMime::Content *parent ) :
    d_ptr( new BasePrivate )
{
  Q_D(Base);
  d->parent = parent;
}

Base::Base( BasePrivate *dd, KMime::Content *parent ) :
    d_ptr( dd )
{
  Q_D(Base);
  d->parent = parent;
}

Base::~Base()
{
  delete d_ptr;
  d_ptr = 0;
}

KMime::Content *Base::parent() const
{
  return d_ptr->parent;
}

void Base::setParent( KMime::Content *parent )
{
  d_ptr->parent = parent;
}

QByteArray Base::rfc2047Charset() const
{
  if ( d_ptr->encCS.isEmpty() || forceDefaultCharset() ) {
    return defaultCharset();
  } else {
    return d_ptr->encCS;
  }
}

void Base::setRFC2047Charset( const QByteArray &cs )
{
  d_ptr->encCS = cachedCharset( cs );
}

bool Base::forceDefaultCharset() const
{
  return ( parent() != 0 ? parent()->forceDefaultCharset() : false );
}

QByteArray Base::defaultCharset() const
{
  return ( parent() != 0 ? parent()->defaultCharset() : Latin1 );
}

const char *Base::type() const
{
  return "";
}

bool Base::is( const char *t ) const
{
  return strcasecmp( t, type() ) == 0;
}

bool Base::isMimeHeader() const
{
  return strncasecmp( type(), "Content-", 8 ) == 0;
}

bool Base::isXHeader() const
{
  return strncmp( type(), "X-", 2 ) == 0;
}

QByteArray Base::typeIntro() const
{
  return QByteArray( type() ) + ": ";
}

//-----</Base>---------------------------------

namespace Generics {

//-----<Unstructured>-------------------------

//@cond PRIVATE
kmime_mk_dptr_ctor( Unstructured, Base )
//@endcond

Unstructured::Unstructured( Content *p ) : Base( new UnstructuredPrivate, p )
{
}

Unstructured::Unstructured( Content *p, const QByteArray &s ) : Base( new UnstructuredPrivate, p )
{
  from7BitString( s );
}

Unstructured::Unstructured( Content *p, const QString &s, const QByteArray &cs ) : Base( new UnstructuredPrivate, p )
{
  fromUnicodeString( s, cs );
}

Unstructured::~Unstructured()
{
}

void Unstructured::from7BitString( const QByteArray &s )
{
  Q_D(Unstructured);
  d->decoded = decodeRFC2047String( s, d->encCS, defaultCharset(), forceDefaultCharset() );
}

QByteArray Unstructured::as7BitString( bool withHeaderType ) const
{
  const Q_D(Unstructured);
  QByteArray result;
  if ( withHeaderType ) {
    result = typeIntro();
  }
  result += encodeRFC2047String( d->decoded, d->encCS ) ;

  return result;
}

void Unstructured::fromUnicodeString( const QString &s, const QByteArray &b )
{
  Q_D(Unstructured);
  d->decoded = s;
  d->encCS = cachedCharset( b );
}

QString Unstructured::asUnicodeString() const
{
  return d_func()->decoded;
}

void Unstructured::clear()
{
  Q_D(Unstructured);
  d->decoded.truncate( 0 );
}

bool Unstructured::isEmpty() const
{
  return d_func()->decoded.isEmpty();
}

//-----</Unstructured>-------------------------

//-----<Structured>-------------------------

Structured::Structured( Content *p ) : Base( new StructuredPrivate, p )
{
}

Structured::Structured( Content *p, const QByteArray &s ) : Base( new StructuredPrivate, p )
{
  from7BitString( s );
}

Structured::Structured( Content *p, const QString &s, const QByteArray &cs ) : Base( new StructuredPrivate, p )
{
  fromUnicodeString( s, cs );
}

kmime_mk_dptr_ctor( Structured, Base )

Structured::~Structured()
{
}

void Structured::from7BitString( const QByteArray &s )
{
  Q_D(Structured);
  if ( d->encCS.isEmpty() ) {
    d->encCS = defaultCharset();
  }
  const char *cursor = s.constData();
  parse( cursor, cursor + s.length() );
}

QString Structured::asUnicodeString() const
{
  return QString::fromLatin1( as7BitString( false ) );
}

void Structured::fromUnicodeString( const QString &s, const QByteArray &b )
{
  Q_D(Structured);
  d->encCS = cachedCharset( b );
  from7BitString( s.toLatin1() );
}

//-----</Structured>-------------------------

//-----<Address>-------------------------

Address::Address( Content *p ) : Structured( new AddressPrivate, p )
{
}

Address::Address( Content *p, const QByteArray &s ) : Structured( new AddressPrivate, p )
{
  from7BitString( s );
}

Address::Address( Content *p, const QString &s, const QByteArray &cs ) : Structured( new AddressPrivate, p )
{
  fromUnicodeString( s, cs );
}

kmime_mk_dptr_ctor( Address, Structured )

Address:: ~Address()
{
}

// helper method used in AddressList and MailboxList
static bool stringToMailbox( const QByteArray &address,
                             const QString &displayName, Types::Mailbox &mbox )
{
  Types::AddrSpec addrSpec;
  mbox.setName( displayName );
  const char *cursor = address.constData();
  if ( !parseAngleAddr( cursor, cursor + address.length(), addrSpec ) ) {
    if ( !parseAddrSpec( cursor, cursor + address.length(), addrSpec ) ) {
      kWarning() << "Invalid address";
      return false;
    }
  }
  mbox.setAddress( addrSpec );
  return true;
}

//-----</Address>-------------------------

//-----<MailboxList>-------------------------

kmime_mk_trivial_ctor_with_dptr( MailboxList, Address )
kmime_mk_dptr_ctor( MailboxList, Address )

QByteArray MailboxList::as7BitString( bool withHeaderType ) const
{
  const Q_D(MailboxList);
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv = typeIntro();
  }
  foreach ( const Types::Mailbox &mbox, d->mailboxList ) {
    rv += mbox.as7BitString( d->encCS );
    rv += ", ";
  }
  rv.resize( rv.length() - 2 );
  return rv;
}

void MailboxList::fromUnicodeString( const QString &s, const QByteArray &b )
{
  Q_D(MailboxList);
  d->encCS = cachedCharset( b );
  from7BitString( encodeRFC2047Sentence( s, b ) );
}

QString MailboxList::asUnicodeString() const
{
  return prettyAddresses().join( QLatin1String( ", " ) );
}

void MailboxList::clear()
{
  Q_D(MailboxList);
  d->mailboxList.clear();
}

bool MailboxList::isEmpty() const
{
  return d_func()->mailboxList.isEmpty();
}

void MailboxList::addAddress( const Types::Mailbox &mbox )
{
  Q_D(MailboxList);
  d->mailboxList.append( mbox );
}

void MailboxList::addAddress( const QByteArray &address,
                              const QString &displayName )
{
  Q_D(MailboxList);
  Types::Mailbox mbox;
  if ( stringToMailbox( address, displayName, mbox ) ) {
    d->mailboxList.append( mbox );
  }
}

QList< QByteArray > MailboxList::addresses() const
{
  QList<QByteArray> rv;
  foreach ( const Types::Mailbox &mbox, d_func()->mailboxList ) {
    rv.append( mbox.address() );
  }
  return rv;
}

QStringList MailboxList::displayNames() const
{
  QStringList rv;
  foreach ( const Types::Mailbox &mbox, d_func()->mailboxList ) {
    rv.append( mbox.name() );
  }
  return rv;
}

QStringList MailboxList::prettyAddresses() const
{
  QStringList rv;
  foreach ( const Types::Mailbox &mbox, d_func()->mailboxList ) {
    rv.append( mbox.prettyAddress() );
  }
  return rv;
}

Types::Mailbox::List MailboxList::mailboxes() const
{
  return d_func()->mailboxList;
}

bool MailboxList::parse( const char* &scursor, const char *const send,
                         bool isCRLF )
{
  Q_D(MailboxList);
  // examples:
  // from := "From:" mailbox-list CRLF
  // sender := "Sender:" mailbox CRLF

  // parse an address-list:
  QList<Types::Address> maybeAddressList;
  if ( !parseAddressList( scursor, send, maybeAddressList, isCRLF ) ) {
    return false;
  }

  d->mailboxList.clear();

  // extract the mailboxes and complain if there are groups:
  QList<Types::Address>::Iterator it;
  for ( it = maybeAddressList.begin(); it != maybeAddressList.end() ; ++it ) {
    if ( !(*it).displayName.isEmpty() ) {
      KMIME_WARN << "mailbox groups in header disallowing them! Name: \""
                 << (*it).displayName << "\"" << endl;
    }
    d->mailboxList += (*it).mailboxList;
  }
  return true;
}

//-----</MailboxList>-------------------------

//-----<SingleMailbox>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( SingleMailbox, MailboxList )
//@endcond

bool SingleMailbox::parse( const char* &scursor, const char *const send,
                             bool isCRLF )
{
  Q_D(MailboxList);
  if ( !MailboxList::parse( scursor, send, isCRLF ) ) {
    return false;
  }

  if ( d->mailboxList.count() > 1 ) {
    KMIME_WARN << "multiple mailboxes in header allowing only a single one!"
               << endl;
  }
  return true;
}

//-----</SingleMailbox>-------------------------

//-----<AddressList>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( AddressList, Address )
kmime_mk_dptr_ctor( AddressList, Address )
//@endcond

QByteArray AddressList::as7BitString( bool withHeaderType ) const
{
  const Q_D(AddressList);
  if ( d->addressList.isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv = typeIntro();
  }
  foreach ( const Types::Address &addr, d->addressList ) {
    foreach ( const Types::Mailbox &mbox, addr.mailboxList ) {
      rv += mbox.as7BitString( d->encCS );
      rv += ", ";
    }
  }
  rv.resize( rv.length() - 2 );
  return rv;
}

void AddressList::fromUnicodeString( const QString &s, const QByteArray &b )
{
  Q_D(AddressList);
  d->encCS = cachedCharset( b );
  from7BitString( encodeRFC2047Sentence( s, b ) );
}

QString AddressList::asUnicodeString() const
{
  return prettyAddresses().join( QLatin1String( ", " ) );
}

void AddressList::clear()
{
  Q_D(AddressList);
  d->addressList.clear();
}

bool AddressList::isEmpty() const
{
  return d_func()->addressList.isEmpty();
}

void AddressList::addAddress( const Types::Mailbox &mbox )
{
  Q_D(AddressList);
  Types::Address addr;
  addr.mailboxList.append( mbox );
  d->addressList.append( addr );
}

void AddressList::addAddress( const QByteArray &address,
                              const QString &displayName )
{
  Q_D(AddressList);
  Types::Address addr;
  Types::Mailbox mbox;
  if ( stringToMailbox( address, displayName, mbox ) ) {
    addr.mailboxList.append( mbox );
    d->addressList.append( addr );
  }
}

QList< QByteArray > AddressList::addresses() const
{
  QList<QByteArray> rv;
  foreach ( const Types::Address &addr, d_func()->addressList ) {
    foreach ( const Types::Mailbox &mbox, addr.mailboxList ) {
      rv.append( mbox.address() );
    }
  }
  return rv;
}

QStringList AddressList::displayNames() const
{
  QStringList rv;
  foreach ( const Types::Address &addr, d_func()->addressList ) {
    foreach ( const Types::Mailbox &mbox, addr.mailboxList ) {
      rv.append( mbox.name() );
    }
  }
  return rv;
}

QStringList AddressList::prettyAddresses() const
{
  QStringList rv;
  foreach ( const Types::Address &addr, d_func()->addressList ) {
    foreach ( const Types::Mailbox &mbox, addr.mailboxList ) {
      rv.append( mbox.prettyAddress() );
    }
  }
  return rv;
}

Types::Mailbox::List AddressList::mailboxes() const
{
  Types::Mailbox::List rv;
  foreach ( const Types::Address &addr, d_func()->addressList ) {
    foreach ( const Types::Mailbox &mbox, addr.mailboxList ) {
      rv.append( mbox );
    }
  }
  return rv;
}

bool AddressList::parse( const char* &scursor, const char *const send,
                         bool isCRLF )
{
  Q_D(AddressList);
  QList<Types::Address> maybeAddressList;
  if ( !parseAddressList( scursor, send, maybeAddressList, isCRLF ) ) {
    return false;
  }

  d->addressList = maybeAddressList;
  return true;
}

//-----</AddressList>-------------------------

//-----<Token>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( Token, Structured )
kmime_mk_dptr_ctor( Token, Structured )
//@endcond

QByteArray Token::as7BitString( bool withHeaderType ) const
{
  if ( isEmpty() ) {
    return QByteArray();
  }
  if ( withHeaderType ) {
    return typeIntro() + d_func()->token;
  }
  return d_func()->token;
}

void Token::clear()
{
  Q_D(Token);
  d->token.clear();
}

bool Token::isEmpty() const
{
  return d_func()->token.isEmpty();
}

QByteArray Token::token() const
{
  return d_func()->token;
}

void Token::setToken( const QByteArray &t )
{
  Q_D(Token);
  d->token = t;
}

bool Token::parse( const char* &scursor, const char *const send, bool isCRLF )
{
  Q_D(Token);
  clear();
  eatCFWS( scursor, send, isCRLF );
  // must not be empty:
  if ( scursor == send ) {
    return false;
  }

  QPair<const char*,int> maybeToken;
  if ( !parseToken( scursor, send, maybeToken, false /* no 8bit chars */ ) ) {
    return false;
  }
  d->token = QByteArray( maybeToken.first, maybeToken.second );

  // complain if trailing garbage is found:
  eatCFWS( scursor, send, isCRLF );
  if ( scursor != send ) {
    KMIME_WARN << "trailing garbage after token in header allowing "
      "only a single token!" << endl;
  }
  return true;
}

//-----</Token>-------------------------

//-----<PhraseList>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( PhraseList, Structured )
//@endcond

QByteArray PhraseList::as7BitString( bool withHeaderType ) const
{
  const Q_D(PhraseList);
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv = typeIntro();
  }

  for ( int i = 0; i < d->phraseList.count(); ++i ) {
    // FIXME: only encode when needed, quote when needed, etc.
    rv += encodeRFC2047String( d->phraseList[i], d->encCS, false, false );
    if ( i != d->phraseList.count() - 1 ) {
      rv += ", ";
    }
  }

  return rv;
}

QString PhraseList::asUnicodeString() const
{
  return d_func()->phraseList.join( QLatin1String( ", " ) );
}

void PhraseList::clear()
{
  Q_D(PhraseList);
  d->phraseList.clear();
}

bool PhraseList::isEmpty() const
{
  return d_func()->phraseList.isEmpty();
}

QStringList PhraseList::phrases() const
{
  return d_func()->phraseList;
}

bool PhraseList::parse( const char* &scursor, const char *const send,
                         bool isCRLF )
{
  Q_D(PhraseList);
  d->phraseList.clear();

  while ( scursor != send ) {
    eatCFWS( scursor, send, isCRLF );
    // empty entry ending the list: OK.
    if ( scursor == send ) {
      return true;
    }
    // empty entry: ignore.
    if ( *scursor == ',' ) {
      scursor++;
      continue;
    }

    QString maybePhrase;
    if ( !parsePhrase( scursor, send, maybePhrase, isCRLF ) ) {
      return false;
    }
    d->phraseList.append( maybePhrase );

    eatCFWS( scursor, send, isCRLF );
    // non-empty entry ending the list: OK.
    if ( scursor == send ) {
      return true;
    }
    // comma separating the phrases: eat.
    if ( *scursor == ',' ) {
      scursor++;
    }
  }
  return true;
}

//-----</PhraseList>-------------------------

//-----<DotAtom>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( DotAtom, Structured )
//@endcond

QByteArray DotAtom::as7BitString( bool withHeaderType ) const
{
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }

  rv += d_func()->dotAtom.toLatin1(); // FIXME: encoding?
  return rv;
}

QString DotAtom::asUnicodeString() const
{
  return d_func()->dotAtom;
}

void DotAtom::clear()
{
  Q_D(DotAtom);
  d->dotAtom.clear();
}

bool DotAtom::isEmpty() const
{
  return d_func()->dotAtom.isEmpty();
}

bool DotAtom::parse( const char* &scursor, const char *const send,
                      bool isCRLF )
{
  Q_D(DotAtom);
  QString maybeDotAtom;
  if ( !parseDotAtom( scursor, send, maybeDotAtom, isCRLF ) ) {
    return false;
  }

  d->dotAtom = maybeDotAtom;

  eatCFWS( scursor, send, isCRLF );
  if ( scursor != send ) {
    KMIME_WARN << "trailing garbage after dot-atom in header allowing "
      "only a single dot-atom!" << endl;
  }
  return true;
}

//-----</DotAtom>-------------------------

//-----<Parametrized>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( Parametrized, Structured )
kmime_mk_dptr_ctor( Parametrized, Structured )
//@endcond

QByteArray Parametrized::as7BitString( bool withHeaderType ) const
{
  const Q_D(Parametrized);
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }

  bool first = true;
  for ( QMap<QString,QString>::ConstIterator it = d->parameterHash.constBegin();
        it != d->parameterHash.constEnd(); ++it )
  {
    if ( !first ) {
      rv += "; ";
    } else {
      first = false;
    }
    if ( isUsAscii( it.value() ) ) {
      rv += it.key().toLatin1() + '=';
      QByteArray tmp = it.value().toLatin1();
      addQuotes( tmp, true ); // force quoting, eg. for whitespaces in parameter value
      rv += tmp;
    } else {
      if( useOutlookAttachmentEncoding() ) {
        rv += it.key().toLatin1() + '=';
        kDebug() << "doing:" << it.value() << QLatin1String( d->encCS );
        rv += "\"" + encodeRFC2047String( it.value(), d->encCS ) + "\"";
      } else {
        rv += it.key().toLatin1() + "*=";
        rv += encodeRFC2231String( it.value(), d->encCS );
      }
    }
  }

  return rv;
}

QString Parametrized::parameter( const QString &key ) const
{
  return d_func()->parameterHash.value( key.toLower() );
}

bool Parametrized::hasParameter( const QString &key ) const
{
  return d_func()->parameterHash.contains( key.toLower() );
}

void Parametrized::setParameter( const QString &key, const QString &value )
{
  Q_D(Parametrized);
  d->parameterHash.insert( key.toLower(), value );
}

bool Parametrized::isEmpty() const
{
  return d_func()->parameterHash.isEmpty();
}

void Parametrized::clear()
{
  Q_D(Parametrized);
  d->parameterHash.clear();
}

bool Parametrized::parse( const char *& scursor, const char * const send,
                          bool isCRLF )
{
  Q_D(Parametrized);
  d->parameterHash.clear();
  QByteArray charset;
  if ( !parseParameterListWithCharset( scursor, send, d->parameterHash, charset, isCRLF ) ) {
    return false;
  }
  d->encCS = charset;
  return true;
}

//-----</Parametrized>-------------------------

//-----<Ident>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( Ident, Address )
kmime_mk_dptr_ctor( Ident, Address )
//@endcond

QByteArray Ident::as7BitString( bool withHeaderType ) const
{
  const Q_D(Ident);
  if ( d->msgIdList.isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv = typeIntro();
  }
  foreach ( const Types::AddrSpec &addr, d->msgIdList ) {
    rv += '<';
    rv += addr.asString().toLatin1(); // FIXME: change parsing to use QByteArrays
    rv += "> ";
  }
  rv.resize( rv.length() - 1 );
  return rv;
}

void Ident::clear()
{
  Q_D(Ident);
  d->msgIdList.clear();
  d->cachedIdentifier.clear();
}

bool Ident::isEmpty() const
{
  return d_func()->msgIdList.isEmpty();
}

bool Ident::parse( const char* &scursor, const char * const send, bool isCRLF )
{
  Q_D(Ident);
  // msg-id   := "<" id-left "@" id-right ">"
  // id-left  := dot-atom-text / no-fold-quote / local-part
  // id-right := dot-atom-text / no-fold-literal / domain
  //
  // equivalent to:
  // msg-id   := angle-addr

  d->msgIdList.clear();
  d->cachedIdentifier.clear();

  while ( scursor != send ) {
    eatCFWS( scursor, send, isCRLF );
    // empty entry ending the list: OK.
    if ( scursor == send ) {
      return true;
    }
    // empty entry: ignore.
    if ( *scursor == ',' ) {
      scursor++;
      continue;
    }

    AddrSpec maybeMsgId;
    if ( !parseAngleAddr( scursor, send, maybeMsgId, isCRLF ) ) {
      return false;
    }
    d->msgIdList.append( maybeMsgId );

    eatCFWS( scursor, send, isCRLF );
    // header end ending the list: OK.
    if ( scursor == send ) {
      return true;
    }
    // regular item separator: eat it.
    if ( *scursor == ',' ) {
      scursor++;
    }
  }
  return true;
}

QList<QByteArray> Ident::identifiers() const
{
  QList<QByteArray> rv;
  foreach ( const Types::AddrSpec &addr, d_func()->msgIdList ) {
    rv.append( addr.asString().toLatin1() ); // FIXME change parsing to create QByteArrays
  }
  return rv;
}

void Ident::appendIdentifier( const QByteArray &id )
{
  Q_D(Ident);
  QByteArray tmp = id;
  if ( !tmp.startsWith( '<' ) ) {
    tmp.prepend( '<' );
  }
  if ( !tmp.endsWith( '>' ) ) {
    tmp.append( '>' );
  }
  AddrSpec msgId;
  const char *cursor = tmp.constData();
  if ( parseAngleAddr( cursor, cursor + tmp.length(), msgId ) ) {
    d->msgIdList.append( msgId );
  } else {
    kWarning() << "Unable to parse address spec!";
  }
}

//-----</Ident>-------------------------

//-----<SingleIdent>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_dptr( SingleIdent, Ident )
kmime_mk_dptr_ctor( SingleIdent, Ident )
//@endcond

QByteArray SingleIdent::identifier() const
{
  if ( d_func()->msgIdList.isEmpty() ) {
    return QByteArray();
  }

  if ( d_func()->cachedIdentifier.isEmpty() ) {
    const Types::AddrSpec &addr = d_func()->msgIdList.first();
    d_func()->cachedIdentifier = addr.asString().toLatin1(); // FIXME change parsing to create QByteArrays
  }

  return d_func()->cachedIdentifier;
}

void SingleIdent::setIdentifier( const QByteArray &id )
{
  Q_D(SingleIdent);
  d->msgIdList.clear();
  d->cachedIdentifier.clear();
  appendIdentifier( id );
}

bool SingleIdent::parse( const char* &scursor, const char * const send,
                         bool isCRLF )
{
  Q_D(SingleIdent);
  if ( !Ident::parse( scursor, send, isCRLF ) ) {
    return false;
  }

  if ( d->msgIdList.count() > 1 ) {
    KMIME_WARN << "more than one msg-id in header "
               << "allowing only a single one!" << endl;
  }
  return true;
}

//-----</SingleIdent>-------------------------

} // namespace Generics

//-----<ReturnPath>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( ReturnPath, Generics::Address, Return-Path )
//@endcond

QByteArray ReturnPath::as7BitString( bool withHeaderType ) const
{
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }
  rv += '<' + d_func()->mailbox.as7BitString( d_func()->encCS ) + '>';
  return rv;
}

void ReturnPath::clear()
{
  Q_D(ReturnPath);
  d->mailbox.setAddress( Types::AddrSpec() );
  d->mailbox.setName( QString() );
}

bool ReturnPath::isEmpty() const
{
  const Q_D(ReturnPath);
  return !d->mailbox.hasAddress() && !d->mailbox.hasName();
}

bool ReturnPath::parse( const char* &scursor, const char * const send,
                        bool isCRLF )
{
  Q_D(ReturnPath);
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) {
    return false;
  }

  const char * oldscursor = scursor;

  Mailbox maybeMailbox;
  if ( !parseMailbox( scursor, send, maybeMailbox, isCRLF ) ) {
    // mailbox parsing failed, but check for empty brackets:
    scursor = oldscursor;
    if ( *scursor != '<' ) {
      return false;
    }
    scursor++;
    eatCFWS( scursor, send, isCRLF );
    if ( scursor == send || *scursor != '>' ) {
      return false;
    }
    scursor++;

    // prepare a Null mailbox:
    AddrSpec emptyAddrSpec;
    maybeMailbox.setName( QString() );
    maybeMailbox.setAddress( emptyAddrSpec );
  } else {
    // check that there was no display-name:
    if ( maybeMailbox.hasName() ) {
      KMIME_WARN << "display-name \"" << maybeMailbox.name()
                 << "\" in Return-Path!" << endl;
    }
  }
  d->mailbox = maybeMailbox;

  // see if that was all:
  eatCFWS( scursor, send, isCRLF );
  // and warn if it wasn't:
  if ( scursor != send ) {
    KMIME_WARN << "trailing garbage after angle-addr in Return-Path!" << endl;
  }
  return true;
}

//-----</ReturnPath>-------------------------

//-----<Generic>-------------------------------

// NOTE: Do *not* register Generic with HeaderFactory, since its type() is changeable.

Generic::Generic() : Generics::Unstructured( new GenericPrivate )
{
}

Generic::Generic( const char *t ) : Generics::Unstructured( new GenericPrivate )
{
  setType( t );
}

Generic::Generic( const char *t, Content *p )
  : Generics::Unstructured( new GenericPrivate, p )
{
  setType( t );
}

Generic::Generic( const char *t, Content *p, const QByteArray &s )
  : Generics::Unstructured( new GenericPrivate, p )
{
  from7BitString( s );
  setType( t );
}

Generic::Generic( const char *t, Content *p, const QString &s, const QByteArray &cs )
  : Generics::Unstructured( new GenericPrivate, p )
{
  fromUnicodeString( s, cs );
  setType( t );
}

Generic::~Generic()
{
}

void Generic::clear()
{
  Q_D(Generic);
  delete[] d->type;
  d->type = 0;
  Unstructured::clear();
}

bool Generic::isEmpty() const
{
  return d_func()->type == 0 || Unstructured::isEmpty();
}

const char *Generic::type() const
{
  return d_func()->type;
}

void Generic::setType( const char *type )
{
  Q_D(Generic);
  if ( d->type ) {
    delete[] d->type;
  }
  if ( type ) {
    d->type = new char[strlen( type )+1];
    strcpy( d->type, type );
  } else {
    d->type = 0;
  }
}

//-----<Generic>-------------------------------

//-----<MessageID>-----------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name( MessageID, Generics::SingleIdent, Message-ID )
//@endcond

void MessageID::generate( const QByteArray &fqdn )
{
  setIdentifier( '<' + uniqueString() + '@' + fqdn + '>' );
}

//-----</MessageID>----------------------------

//-----<Control>-------------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( Control, Generics::Structured, Control )
//@endcond

QByteArray Control::as7BitString( bool withHeaderType ) const
{
  const Q_D(Control);
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }

  rv += d->name;
  if ( !d->parameter.isEmpty() ) {
    rv += ' ' + d->parameter;
  }
  return rv;
}

void Control::clear()
{
  Q_D(Control);
  d->name.clear();
  d->parameter.clear();
}

bool Control::isEmpty() const
{
  return d_func()->name.isEmpty();
}

QByteArray Control::controlType() const
{
  return d_func()->name;
}

QByteArray Control::parameter() const
{
  return d_func()->parameter;
}

bool Control::isCancel() const
{
  return d_func()->name.toLower() == "cancel";
}

void Control::setCancel( const QByteArray &msgid )
{
  Q_D(Control);
  d->name = "cancel";
  d->parameter = msgid;
}

bool Control::parse( const char* &scursor, const char *const send, bool isCRLF )
{
  Q_D(Control);
  clear();
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) {
    return false;
  }
  const char *start = scursor;
  while ( scursor != send && !isspace( *scursor ) ) {
    ++scursor;
  }
  d->name = QByteArray( start, scursor - start );
  eatCFWS( scursor, send, isCRLF );
  d->parameter = QByteArray( scursor, send - scursor );
  return true;
}

//-----</Control>------------------------------

//-----<MailCopiesTo>--------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( MailCopiesTo,
                                 Generics::AddressList, Mail-Copies-To )
//@endcond

QByteArray MailCopiesTo::as7BitString( bool withHeaderType ) const
{
  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }
  if ( !AddressList::isEmpty() ) {
    rv += AddressList::as7BitString( false );
  } else {
    if ( d_func()->alwaysCopy ) {
      rv += "poster";
    } else if ( d_func()->neverCopy ) {
      rv += "nobody";
    }
  }
  return rv;
}

QString MailCopiesTo::asUnicodeString() const
{
  if ( !AddressList::isEmpty() ) {
    return AddressList::asUnicodeString();
  }
  if ( d_func()->alwaysCopy ) {
    return QLatin1String( "poster" );
  }
  if ( d_func()->neverCopy ) {
    return QLatin1String( "nobody" );
  }
  return QString();
}

void MailCopiesTo::clear()
{
  Q_D(MailCopiesTo);
  AddressList::clear();
  d->alwaysCopy = false;
  d->neverCopy = false;
}

bool MailCopiesTo::isEmpty() const
{
  return AddressList::isEmpty() && !(d_func()->alwaysCopy || d_func()->neverCopy);
}

bool MailCopiesTo::alwaysCopy() const
{
  return !AddressList::isEmpty() || d_func()->alwaysCopy;
}

void MailCopiesTo::setAlwaysCopy()
{
  Q_D(MailCopiesTo);
  clear();
  d->alwaysCopy = true;
}

bool MailCopiesTo::neverCopy() const
{
  return d_func()->neverCopy;
}

void MailCopiesTo::setNeverCopy()
{
  Q_D(MailCopiesTo);
  clear();
  d->neverCopy = true;
}

bool MailCopiesTo::parse( const char *& scursor, const char * const send,
                          bool isCRLF )
{
  Q_D(MailCopiesTo);
  clear();
  if ( send - scursor == 5 ) {
    if ( qstrnicmp( "never", scursor, 5 ) == 0 ) {
      d->neverCopy = true;
      return true;
    }
  }
  if ( send - scursor == 6 ) {
    if ( qstrnicmp( "always", scursor, 6 ) == 0 || qstrnicmp( "poster", scursor, 6 ) == 0 ) {
      d->alwaysCopy = true;
      return true;
    }
    if ( qstrnicmp( "nobody", scursor, 6 ) == 0 ) {
      d->neverCopy = true;
      return true;
    }
  }
  return AddressList::parse( scursor, send, isCRLF );
}

//-----</MailCopiesTo>-------------------------

//-----<Date>----------------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( Date, Generics::Structured, Date )
//@endcond

QByteArray Date::as7BitString( bool withHeaderType ) const
{
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }
  rv += d_func()->dateTime.toString( KDateTime::RFCDateDay ).toLatin1();
  return rv;
}

void Date::clear()
{
  Q_D(Date);
  d->dateTime = KDateTime();
}

bool Date::isEmpty() const
{
  return d_func()->dateTime.isNull() || !d_func()->dateTime.isValid();
}

KDateTime Date::dateTime() const
{
  return d_func()->dateTime;
}

void Date::setDateTime( const KDateTime &dt )
{
  Q_D(Date);
  d->dateTime = dt;
}

int Date::ageInDays() const
{
  QDate today = QDate::currentDate();
  return dateTime().date().daysTo(today);
}

bool Date::parse( const char* &scursor, const char *const send, bool isCRLF )
{
  Q_D(Date);
  return parseDateTime( scursor, send, d->dateTime, isCRLF );
}

//-----</Date>---------------------------------

//-----<Newsgroups>----------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( Newsgroups, Generics::Structured, Newsgroups )
kmime_mk_trivial_ctor_with_name( FollowUpTo, Newsgroups, Followup-To )
//@endcond

QByteArray Newsgroups::as7BitString( bool withHeaderType ) const
{
  const Q_D(Newsgroups);
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }

  for ( int i = 0; i < d->groups.count(); ++i ) {
    rv += d->groups[ i ];
    if ( i != d->groups.count() - 1 ) {
      rv += ',';
    }
  }
  return rv;
}

void Newsgroups::fromUnicodeString( const QString &s, const QByteArray &b )
{
  Q_UNUSED( b );
  Q_D(Newsgroups);
  from7BitString( s.toUtf8() );
  d->encCS = cachedCharset( "UTF-8" );
}

QString Newsgroups::asUnicodeString() const
{
  return QString::fromUtf8( as7BitString( false ) );
}

void Newsgroups::clear()
{
  Q_D(Newsgroups);
  d->groups.clear();
}

bool Newsgroups::isEmpty() const
{
  return d_func()->groups.isEmpty();
}

QList<QByteArray> Newsgroups::groups() const
{
  return d_func()->groups;
}

void Newsgroups::setGroups( const QList<QByteArray> &groups )
{
  Q_D(Newsgroups);
  d->groups = groups;
}

bool Newsgroups::isCrossposted() const
{
  return d_func()->groups.count() >= 2;
}

bool Newsgroups::parse( const char* &scursor, const char *const send, bool isCRLF )
{
  Q_D(Newsgroups);
  clear();
  forever {
    eatCFWS( scursor, send, isCRLF );
    if ( scursor != send && *scursor == ',' ) {
      ++scursor;
    }
    eatCFWS( scursor, send, isCRLF );
    if ( scursor == send ) {
      return true;
    }
    const char *start = scursor;
    while ( scursor != send && !isspace( *scursor ) && *scursor != ',' ) {
      ++scursor;
    }
    QByteArray group( start, scursor - start );
    d->groups.append( group );
  }
  return true;
}

//-----</Newsgroups>---------------------------

//-----<Lines>---------------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( Lines, Generics::Structured, Lines )
//@endcond

QByteArray Lines::as7BitString( bool withHeaderType ) const
{
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray num;
  num.setNum( d_func()->lines );

  if ( withHeaderType ) {
    return typeIntro() + num;
  }
  return num;
}

QString Lines::asUnicodeString() const
{
  if ( isEmpty() ) {
    return QString();
  }
  return QString::number( d_func()->lines );
}

void Lines::clear()
{
  Q_D(Lines);
  d->lines = -1;
}

bool Lines::isEmpty() const
{
  return d_func()->lines == -1;
}

int Lines::numberOfLines() const
{
  return d_func()->lines;
}

void Lines::setNumberOfLines( int lines )
{
  Q_D(Lines);
  d->lines = lines;
}

bool Lines::parse( const char* &scursor, const char* const send, bool isCRLF )
{
  Q_D(Lines);
  eatCFWS( scursor, send, isCRLF );
  if ( parseDigits( scursor, send, d->lines )  == 0 ) {
    clear();
    return false;
  }
  return true;
}

//-----</Lines>--------------------------------

//-----<Content-Type>--------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( ContentType, Generics::Parametrized,
                                 Content-Type )
//@endcond

bool ContentType::isEmpty() const
{
  return d_func()->mimeType.isEmpty();
}

void ContentType::clear()
{
  Q_D(ContentType);
  d->category = CCsingle;
  d->mimeType.clear();
  d->mimeSubType.clear();
  Parametrized::clear();
}

QByteArray ContentType::as7BitString( bool withHeaderType ) const
{
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }

  rv += mimeType();
  if ( !Parametrized::isEmpty() ) {
    rv += "; " + Parametrized::as7BitString( false );
  }

  return rv;
}

QByteArray ContentType::mimeType() const
{
  Q_D(const ContentType);
  QByteArray mt;
  mt.reserve( d->mimeType.size() + d->mimeSubType.size() + 1 );
  mt.append( d->mimeType );
  mt.append( '/' );
  mt.append( d->mimeSubType );
  return mt;
}

QByteArray ContentType::mediaType() const
{
  return d_func()->mimeType;
}

QByteArray ContentType::subType() const
{
  return d_func()->mimeSubType;
}

void ContentType::setMimeType( const QByteArray &mimeType )
{
  Q_D(ContentType);
  int pos = mimeType.indexOf( '/' );
  if ( pos < 0 ) {
    d->mimeType = mimeType;
    d->mimeSubType.clear();
  } else {
    d->mimeType = mimeType.left( pos );
    d->mimeSubType = mimeType.mid( pos + 1 );
  }
  Parametrized::clear();

  if ( isMultipart() ) {
    d->category = CCcontainer;
  } else {
    d->category = CCsingle;
  }
}

bool ContentType::isMediatype( const char *mediatype ) const
{
  return strncasecmp( mediaType().constData(), mediatype, strlen( mediatype ) ) == 0;
}

bool ContentType::isSubtype( const char *subtype ) const
{
  return strncasecmp( subType().constData(), subtype, strlen( subtype ) ) == 0;
}

bool ContentType::isText() const
{
  return ( strncasecmp( mediaType().constData(), "text", 4 ) == 0
          || isEmpty() );
}

bool ContentType::isPlainText() const
{
  return ( strcasecmp( mimeType().constData(), "text/plain" ) == 0
          || isEmpty() );
}

bool ContentType::isHTMLText() const
{
  return strcasecmp( mimeType().constData(), "text/html" ) == 0;
}

bool ContentType::isImage() const
{
  return strncasecmp( mediaType().constData(), "image", 5 ) == 0;
}

bool ContentType::isMultipart() const
{
  return strncasecmp( mediaType().constData(), "multipart", 9 ) == 0;
}

bool ContentType::isPartial() const
{
  return strcasecmp( mimeType().constData(), "message/partial" ) == 0;
}

QByteArray ContentType::charset() const
{
  QByteArray ret = parameter( QLatin1String( "charset" ) ).toLatin1();
  if ( ret.isEmpty() || forceDefaultCharset() ) {
    //return the default-charset if necessary
    ret = defaultCharset();
  }
  return ret;
}

void ContentType::setCharset( const QByteArray &s )
{
  setParameter( QLatin1String( "charset" ), QString::fromLatin1( s ) );
}

QByteArray ContentType::boundary() const
{
  return parameter( QLatin1String( "boundary" ) ).toLatin1();
}

void ContentType::setBoundary( const QByteArray &s )
{
  setParameter( QLatin1String( "boundary" ), QString::fromLatin1( s ) );
}

QString ContentType::name() const
{
  return parameter( QLatin1String( "name" ) );
}

void ContentType::setName( const QString &s, const QByteArray &cs )
{
  Q_D(ContentType);
  d->encCS = cs;
  setParameter( QLatin1String( "name" ), s );
}

QByteArray ContentType::id() const
{
  return parameter( QLatin1String( "id" ) ).toLatin1();
}

void ContentType::setId( const QByteArray &s )
{
  setParameter( QLatin1String( "id" ), QString::fromLatin1( s ) );
}

int ContentType::partialNumber() const
{
  QByteArray p = parameter( QLatin1String( "number" ) ).toLatin1();
  if ( !p.isEmpty() ) {
    return p.toInt();
  } else {
    return -1;
  }
}

int ContentType::partialCount() const
{
  QByteArray p = parameter( QLatin1String( "total" ) ).toLatin1();
  if ( !p.isEmpty() ) {
    return p.toInt();
  } else {
    return -1;
  }
}

contentCategory ContentType::category() const
{
  return d_func()->category;
}

void ContentType::setCategory( contentCategory c )
{
  Q_D(ContentType);
  d->category = c;
}

void ContentType::setPartialParams( int total, int number )
{
  setParameter( QLatin1String( "number" ), QString::number( number ) );
  setParameter( QLatin1String( "total" ), QString::number( total ) );
}

bool ContentType::parse( const char* &scursor, const char * const send,
                         bool isCRLF )
{
  Q_D(ContentType);
  // content-type: type "/" subtype *(";" parameter)

  clear();
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) {
    return false; // empty header
  }

  // type
  QPair<const char*,int> maybeMimeType;
  if ( !parseToken( scursor, send, maybeMimeType, false /* no 8Bit */ ) ) {
    return false;
  }
  d->mimeType = QByteArray( maybeMimeType.first, maybeMimeType.second ).toLower();

  // subtype
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send || *scursor != '/' ) {
    return false;
  }
  scursor++;
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) {
    return false;
  }

  QPair<const char*,int> maybeSubType;
  if ( !parseToken( scursor, send, maybeSubType, false /* no 8bit */ ) ) {
    return false;
  }
  d->mimeSubType = QByteArray( maybeSubType.first, maybeSubType.second ).toLower();

  // parameter list
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) {
    goto success; // no parameters
  }

  if ( *scursor != ';' ) {
    return false;
  }
  scursor++;

  if ( !Parametrized::parse( scursor, send, isCRLF ) ) {
    return false;
  }

  // adjust category
success:
  if ( isMultipart() ) {
    d->category = CCcontainer;
  } else {
    d->category = CCsingle;
  }
  return true;
}

//-----</Content-Type>-------------------------

//-----<ContentID>----------------------

kmime_mk_trivial_ctor_with_name_and_dptr( ContentID, SingleIdent, Content-ID )
kmime_mk_dptr_ctor( ContentID, SingleIdent )

bool ContentID::parse( const char* &scursor, const char *const send, bool isCRLF )
{
  Q_D ( ContentID );
  // Content-id := "<" contentid ">"
  // contentid := now whitespaces

  const char* origscursor = scursor;
  if ( !SingleIdent::parse ( scursor, send, isCRLF ) )
  {
    scursor = origscursor;
    d->msgIdList.clear();
    d->cachedIdentifier.clear();

    while ( scursor != send )
    {
      eatCFWS ( scursor, send, isCRLF );
      // empty entry ending the list: OK.
      if ( scursor == send )
      {
        return true;
      }
      // empty entry: ignore.
      if ( *scursor == ',' )
      {
        scursor++;
        continue;
      }

      AddrSpec maybeContentId;
      // Almost parseAngleAddr
      if ( scursor == send || *scursor != '<' )
      {
        return false;
      }
      scursor++; // eat '<'

      eatCFWS ( scursor, send, isCRLF );
      if ( scursor == send )
      {
        return false;
      }

      // Save chars untill '>''
      QString result;
      if( !parseAtom(scursor, send, result, false) ) {
        return false;
      }

      eatCFWS ( scursor, send, isCRLF );
      if ( scursor == send || *scursor != '>' )
      {
        return false;
      }
      scursor++;
      // /Almost parseAngleAddr

      maybeContentId.localPart = result;
      d->msgIdList.append ( maybeContentId );

      eatCFWS ( scursor, send, isCRLF );
      // header end ending the list: OK.
      if ( scursor == send )
      {
        return true;
      }
      // regular item separator: eat it.
      if ( *scursor == ',' )
      {
        scursor++;
      }
    }
    return true;
  }
  else
  {
    return true;
  }
}

//-----</ContentID>----------------------

//-----<ContentTransferEncoding>----------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( ContentTransferEncoding,
                                 Generics::Token, Content-Transfer-Encoding )
//@endcond

typedef struct { const char *s; int e; } encTableType;

static const encTableType encTable[] =
{
  { "7Bit", CE7Bit },
  { "8Bit", CE8Bit },
  { "quoted-printable", CEquPr },
  { "base64", CEbase64 },
  { "x-uuencode", CEuuenc },
  { "binary", CEbinary },
  { 0, 0}
};

void ContentTransferEncoding::clear()
{
  Q_D(ContentTransferEncoding);
  d->decoded = true;
  d->cte = CE7Bit;
  Token::clear();
}

contentEncoding ContentTransferEncoding::encoding() const
{
  return d_func()->cte;
}

void ContentTransferEncoding::setEncoding( contentEncoding e )
{
  Q_D(ContentTransferEncoding);
  d->cte = e;

  for ( int i = 0; encTable[i].s != 0; ++i ) {
    if ( d->cte == encTable[i].e ) {
      setToken( encTable[i].s );
      break;
    }
  }
}

bool ContentTransferEncoding::decoded() const
{
  return d_func()->decoded;
}

void ContentTransferEncoding::setDecoded( bool decoded )
{
  Q_D(ContentTransferEncoding);
  d->decoded = decoded;
}

bool ContentTransferEncoding::needToEncode() const
{
  const Q_D(ContentTransferEncoding);
  return d->decoded && (d->cte == CEquPr || d->cte == CEbase64);
}

bool ContentTransferEncoding::parse( const char *& scursor,
                                     const char * const send, bool isCRLF )
{
  Q_D(ContentTransferEncoding);
  clear();
  if ( !Token::parse( scursor, send, isCRLF ) ) {
    return false;
  }

  // TODO: error handling in case of an unknown encoding?
  for ( int i = 0; encTable[i].s != 0; ++i ) {
    if ( strcasecmp( token().constData(), encTable[i].s ) == 0 ) {
      d->cte = ( contentEncoding )encTable[i].e;
      break;
    }
  }
  d->decoded = ( d->cte == CE7Bit || d->cte == CE8Bit );
  return true;
}

//-----</ContentTransferEncoding>---------------------------

//-----<ContentDisposition>--------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name_and_dptr( ContentDisposition,
                                 Generics::Parametrized, Content-Disposition )
//@endcond

QByteArray ContentDisposition::as7BitString( bool withHeaderType ) const
{
  if ( isEmpty() ) {
    return QByteArray();
  }

  QByteArray rv;
  if ( withHeaderType ) {
    rv += typeIntro();
  }

  if ( d_func()->disposition == CDattachment ) {
    rv += "attachment";
  } else if ( d_func()->disposition == CDinline ) {
    rv += "inline";
  } else {
    return QByteArray();
  }

  if ( !Parametrized::isEmpty() ) {
    rv += "; " + Parametrized::as7BitString( false );
  }

  return rv;
}

bool ContentDisposition::isEmpty() const
{
  return d_func()->disposition == CDInvalid;
}

void ContentDisposition::clear()
{
  Q_D(ContentDisposition);
  d->disposition = CDInvalid;
  Parametrized::clear();
}

contentDisposition ContentDisposition::disposition() const
{
  return d_func()->disposition;
}

void ContentDisposition::setDisposition( contentDisposition disp )
{
  Q_D(ContentDisposition);
  d->disposition = disp;
}

QString KMime::Headers::ContentDisposition::filename() const
{
  return parameter( QLatin1String( "filename" ) );
}

void ContentDisposition::setFilename( const QString &filename )
{
  setParameter( QLatin1String( "filename" ), filename );
}

bool ContentDisposition::parse( const char *& scursor, const char * const send,
                                bool isCRLF )
{
  Q_D(ContentDisposition);
  clear();

  // token
  QByteArray token;
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) {
    return false;
  }

  QPair<const char*,int> maybeToken;
  if ( !parseToken( scursor, send, maybeToken, false /* no 8Bit */ ) ) {
    return false;
  }

  token = QByteArray( maybeToken.first, maybeToken.second ).toLower();
  if ( token == "inline" ) {
    d->disposition = CDinline;
  } else if ( token == "attachment" ) {
    d->disposition = CDattachment;
  } else {
    return false;
  }

  // parameter list
  eatCFWS( scursor, send, isCRLF );
  if ( scursor == send ) {
    return true; // no parameters
  }

  if ( *scursor != ';' ) {
    return false;
  }
  scursor++;

  return Parametrized::parse( scursor, send, isCRLF );
}

//-----</ContentDisposition>-------------------------

//@cond PRIVATE
kmime_mk_trivial_ctor_with_name( Subject, Generics::Unstructured, Subject )
//@endcond

bool Subject::isReply() const
{
  return asUnicodeString().indexOf( QLatin1String( "Re:" ), 0, Qt::CaseInsensitive ) == 0;
}

Base* createHeader( const QByteArray& type )
{
  return HeaderFactory::self()->createHeader( type );
}


//@cond PRIVATE
kmime_mk_trivial_ctor_with_name( ContentDescription,
                                 Generics::Unstructured, Content-Description )
kmime_mk_trivial_ctor_with_name( ContentLocation,
                                Generics::Unstructured, Content-Location )
kmime_mk_trivial_ctor_with_name( From, Generics::MailboxList, From )
kmime_mk_trivial_ctor_with_name( Sender, Generics::SingleMailbox, Sender )
kmime_mk_trivial_ctor_with_name( To, Generics::AddressList, To )
kmime_mk_trivial_ctor_with_name( Cc, Generics::AddressList, Cc )
kmime_mk_trivial_ctor_with_name( Bcc, Generics::AddressList, Bcc )
kmime_mk_trivial_ctor_with_name( ReplyTo, Generics::AddressList, Reply-To )
kmime_mk_trivial_ctor_with_name( Keywords, Generics::PhraseList, Keywords )
kmime_mk_trivial_ctor_with_name( MIMEVersion, Generics::DotAtom, MIME-Version )
kmime_mk_trivial_ctor_with_name( Supersedes, Generics::SingleIdent, Supersedes )
kmime_mk_trivial_ctor_with_name( InReplyTo, Generics::Ident, In-Reply-To )
kmime_mk_trivial_ctor_with_name( References, Generics::Ident, References )
kmime_mk_trivial_ctor_with_name( Organization, Generics::Unstructured, Organization )
kmime_mk_trivial_ctor_with_name( UserAgent, Generics::Unstructured, User-Agent )
//@endcond

} // namespace Headers

} // namespace KMime

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