File indexing completed on 2024-06-23 05:19:20

 /*
    SPDX-FileCopyrightText: 2016 Sandro Knauß <sknauss@kde.org>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "mailman.h"
 
 #include "utils.h"
 
 #include "messagepart.h"
 #include "objecttreeparser.h"
 
 #include <KMime/Content>
 
 #include "mimetreeparser_debug.h"
 
 using namespace MimeTreeParser;
 
 const MailmanBodyPartFormatter *MailmanBodyPartFormatter::self;
 
 const Interface::BodyPartFormatter *MailmanBodyPartFormatter::create()
 {
     if (!self) {
         self = new MailmanBodyPartFormatter();
     }
     return self;
 }
 
 bool MailmanBodyPartFormatter::isMailmanMessage(KMime::Content *curNode) const
 {
     if (!curNode || curNode->head().isEmpty()) {
         return false;
     }
     if (curNode->hasHeader("X-Mailman-Version")) {
         return true;
     }
     if (KMime::Headers::Base *header = curNode->headerByType("X-Mailer")) {
         if (header->asUnicodeString().contains(QLatin1StringView("MAILMAN"), Qt::CaseInsensitive)) {
             return true;
         }
     }
     return false;
 }
 
 MessagePart::Ptr MailmanBodyPartFormatter::process(Interface::BodyPart &part) const
 {
     KMime::Content *curNode = part.content();
 
     if (!isMailmanMessage(curNode)) {
         return {};
     }
 
     // Latin1 or utf8 ?
     const QString str = QString::fromLatin1(curNode->decodedContent());
 
     // ###
     const QLatin1StringView delim1("--__--__--\n\nMessage:");
     const QLatin1StringView delim2("--__--__--\r\n\r\nMessage:");
     const QLatin1StringView delimZ2("--__--__--\n\n_____________");
     const QLatin1StringView delimZ1("--__--__--\r\n\r\n_____________");
     QString partStr;
     QString digestHeaderStr;
     int thisDelim = str.indexOf(delim1, Qt::CaseInsensitive);
     if (thisDelim == -1) {
         thisDelim = str.indexOf(delim2, Qt::CaseInsensitive);
     }
     if (thisDelim == -1) {
         return {};
     }
 
     int nextDelim = str.indexOf(delim1, thisDelim + 1, Qt::CaseInsensitive);
     if (-1 == nextDelim) {
         nextDelim = str.indexOf(delim2, thisDelim + 1, Qt::CaseInsensitive);
     }
     if (-1 == nextDelim) {
         nextDelim = str.indexOf(delimZ1, thisDelim + 1, Qt::CaseInsensitive);
     }
     if (-1 == nextDelim) {
         nextDelim = str.indexOf(delimZ2, thisDelim + 1, Qt::CaseInsensitive);
     }
     if (nextDelim < 0) {
         return {};
     }
 
     // if ( curNode->mRoot )
     //  curNode = curNode->mRoot;
 
     // at least one message found: build a mime tree
     digestHeaderStr = QStringLiteral("Content-Type: text/plain\nContent-Description: digest header\n\n");
     digestHeaderStr += QStringView(str).mid(0, thisDelim);
 
     MessagePartList::Ptr mpl(new MessagePartList(part.objectTreeParser()));
     mpl->appendSubPart(createAndParseTempNode(part, part.topLevelContent(), digestHeaderStr.toLatin1().constData(), "Digest Header"));
     // mReader->queueHtml("<br><hr><br>");
     // temporarily change current node's Content-Type
     // to get our embedded RfC822 messages properly inserted
     curNode->contentType()->setMimeType("multipart/digest");
     while (-1 < nextDelim) {
         int thisEoL = str.indexOf(QLatin1StringView("\nMessage:"), thisDelim, Qt::CaseInsensitive);
         if (-1 < thisEoL) {
             thisDelim = thisEoL + 1;
         } else {
             thisEoL = str.indexOf(QLatin1StringView("\n_____________"), thisDelim, Qt::CaseInsensitive);
             if (-1 < thisEoL) {
                 thisDelim = thisEoL + 1;
             }
         }
         thisEoL = str.indexOf(QLatin1Char('\n'), thisDelim);
         if (-1 < thisEoL) {
             thisDelim = thisEoL + 1;
         } else {
             thisDelim = thisDelim + 1;
         }
         // while( thisDelim < cstr.size() && '\n' == cstr[thisDelim] )
         //  ++thisDelim;
 
         partStr = QStringLiteral("Content-Type: message/rfc822\nContent-Description: embedded message\n\n");
         partStr += QStringView(str).mid(thisDelim, nextDelim - thisDelim);
         QString subject = QStringLiteral("embedded message");
         QString subSearch = QStringLiteral("\nSubject:");
         int subPos = partStr.indexOf(subSearch, 0, Qt::CaseInsensitive);
         if (-1 < subPos) {
             subject = partStr.mid(subPos + subSearch.length());
             thisEoL = subject.indexOf(QLatin1Char('\n'));
             if (-1 < thisEoL) {
                 subject.truncate(thisEoL);
             }
         }
         qCDebug(MIMETREEPARSER_LOG) << "        embedded message found: \"" << subject;
         mpl->appendSubPart(createAndParseTempNode(part, part.topLevelContent(), partStr.toLatin1().constData(), subject.toLatin1().constData()));
         // mReader->queueHtml("<br><hr><br>");
         thisDelim = nextDelim + 1;
         nextDelim = str.indexOf(delim1, thisDelim, Qt::CaseInsensitive);
         if (-1 == nextDelim) {
             nextDelim = str.indexOf(delim2, thisDelim, Qt::CaseInsensitive);
         }
         if (-1 == nextDelim) {
             nextDelim = str.indexOf(delimZ1, thisDelim, Qt::CaseInsensitive);
         }
         if (-1 == nextDelim) {
             nextDelim = str.indexOf(delimZ2, thisDelim, Qt::CaseInsensitive);
         }
     }
     // reset current node's Content-Type
     curNode->contentType()->setMimeType("text/plain");
     int thisEoL = str.indexOf(QLatin1StringView("_____________"), thisDelim);
     if (-1 < thisEoL) {
         thisDelim = thisEoL;
         thisEoL = str.indexOf(QLatin1Char('\n'), thisDelim);
         if (-1 < thisEoL) {
             thisDelim = thisEoL + 1;
         }
     } else {
         thisDelim = thisDelim + 1;
     }
     partStr = QStringLiteral("Content-Type: text/plain\nContent-Description: digest footer\n\n");
     partStr += QStringView(str).mid(thisDelim);
     mpl->appendSubPart(createAndParseTempNode(part, part.topLevelContent(), partStr.toLatin1().constData(), "Digest Footer"));
     return mpl;
 }