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tdepim/kmail/kmfoldermbox.cpp

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/* -*- c-basic-offset: 2 -*-
* kmail: KDE mail client
* Copyright (c) 1996-1998 Stefan Taferner <taferner@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <config.h>
#include <tqfileinfo.h>
#include <tqregexp.h>
#include "kmfoldermbox.h"
#include "folderstorage.h"
#include "kmfolder.h"
#include "kmkernel.h"
#include "kmmsgdict.h"
#include "undostack.h"
#include "kcursorsaver.h"
#include "jobscheduler.h"
#include "compactionjob.h"
#include "util.h"
#include <kdebug.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <knotifyclient.h>
#include <kprocess.h>
#include <kconfig.h>
#include <ctype.h>
#include <stdio.h>
#include <errno.h>
#include <assert.h>
#include <ctype.h>
#include <unistd.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/file.h>
#include "broadcaststatus.h"
using KPIM::BroadcastStatus;
#ifndef MAX_LINE
#define MAX_LINE 4096
#endif
#ifndef INIT_MSGS
#define INIT_MSGS 8
#endif
// Regular expression to find the line that seperates messages in a mail
// folder:
#define MSG_SEPERATOR_START "From "
#define MSG_SEPERATOR_START_LEN (sizeof(MSG_SEPERATOR_START) - 1)
#define MSG_SEPERATOR_REGEX "^From .*[0-9][0-9]:[0-9][0-9]"
//-----------------------------------------------------------------------------
KMFolderMbox::KMFolderMbox(KMFolder* folder, const char* name)
: KMFolderIndex(folder, name)
{
mStream = 0;
mFilesLocked = false;
mReadOnly = false;
mLockType = lock_none;
}
//-----------------------------------------------------------------------------
KMFolderMbox::~KMFolderMbox()
{
if (mOpenCount>0)
close("~kmfoldermbox", true);
if (kmkernel->undoStack())
kmkernel->undoStack()->folderDestroyed( folder() );
}
//-----------------------------------------------------------------------------
int KMFolderMbox::open(const char *owner)
{
Q_UNUSED( owner );
int rc = 0;
mOpenCount++;
kmkernel->jobScheduler()->notifyOpeningFolder( folder() );
if (mOpenCount > 1) return 0; // already open
assert(!folder()->name().isEmpty());
mFilesLocked = false;
mStream = fopen(TQFile::encodeName(location()), "r+"); // messages file
if (!mStream)
{
KNotifyClient::event( 0, "warning",
i18n("Cannot open file \"%1\":\n%2").arg(location()).arg(strerror(errno)));
kdDebug(5006) << "Cannot open folder `" << location() << "': " << strerror(errno) << endl;
mOpenCount = 0;
return errno;
}
lock();
if (!folder()->path().isEmpty())
{
KMFolderIndex::IndexStatus index_status = indexStatus();
// test if index file exists and is up-to-date
if (KMFolderIndex::IndexOk != index_status)
{
// only show a warning if the index file exists, otherwise it can be
// silently regenerated
if (KMFolderIndex::IndexTooOld == index_status) {
TQString msg = i18n("<qt><p>The index of folder '%2' seems "
"to be out of date. To prevent message "
"corruption the index will be "
"regenerated. As a result deleted "
"messages might reappear and status "
"flags might be lost.</p>"
"<p>Please read the corresponding entry "
"in the <a href=\"%1\">FAQ section of the manual "
"of KMail</a> for "
"information about how to prevent this "
"problem from happening again.</p></qt>")
.arg("help:/kmail/faq.html#faq-index-regeneration")
.arg(name());
// When KMail is starting up we have to show a non-blocking message
// box so that the initialization can continue. We don't show a
// queued message box when KMail isn't starting up because queued
// message boxes don't have a "Don't ask again" checkbox.
if (kmkernel->startingUp())
{
KConfigGroup configGroup( KMKernel::config(), "Notification Messages" );
bool showMessage =
configGroup.readBoolEntry( "showIndexRegenerationMessage", true );
if (showMessage)
KMessageBox::queuedMessageBox( 0, KMessageBox::Information,
msg, i18n("Index Out of Date"),
KMessageBox::AllowLink );
}
else
{
KCursorSaver idle(KBusyPtr::idle());
KMessageBox::information( 0, msg, i18n("Index Out of Date"),
"showIndexRegenerationMessage",
KMessageBox::AllowLink );
}
}
TQString str;
mIndexStream = 0;
str = i18n("Folder `%1' changed. Recreating index.")
.arg(name());
emit statusMsg(str);
} else {
mIndexStream = fopen(TQFile::encodeName(indexLocation()), "r+"); // index file
if ( mIndexStream ) {
fcntl(fileno(mIndexStream), F_SETFD, FD_CLOEXEC);
updateIndexStreamPtr();
}
}
if (!mIndexStream)
rc = createIndexFromContents();
else
if (!readIndex())
rc = createIndexFromContents();
}
else
{
mAutoCreateIndex = false;
rc = createIndexFromContents();
}
mChanged = false;
fcntl(fileno(mStream), F_SETFD, FD_CLOEXEC);
if (mIndexStream)
fcntl(fileno(mIndexStream), F_SETFD, FD_CLOEXEC);
return rc;
}
//----------------------------------------------------------------------------
int KMFolderMbox::canAccess()
{
assert(!folder()->name().isEmpty());
if (access(TQFile::encodeName(location()), R_OK | W_OK) != 0) {
kdDebug(5006) << "KMFolderMbox::access call to access function failed" << endl;
return 1;
}
return 0;
}
//-----------------------------------------------------------------------------
int KMFolderMbox::create()
{
int rc;
int old_umask;
assert(!folder()->name().isEmpty());
assert(mOpenCount == 0);
kdDebug(5006) << "Creating folder " << name() << endl;
if (access(TQFile::encodeName(location()), F_OK) == 0) {
kdDebug(5006) << "KMFolderMbox::create call to access function failed." << endl;
kdDebug(5006) << "File:: " << endl;
kdDebug(5006) << "Error " << endl;
return EEXIST;
}
old_umask = umask(077);
mStream = fopen(TQFile::encodeName(location()), "w+"); //sven; open RW
umask(old_umask);
if (!mStream) return errno;
fcntl(fileno(mStream), F_SETFD, FD_CLOEXEC);
if (!folder()->path().isEmpty())
{
old_umask = umask(077);
mIndexStream = fopen(TQFile::encodeName(indexLocation()), "w+"); //sven; open RW
updateIndexStreamPtr(true);
umask(old_umask);
if (!mIndexStream) return errno;
fcntl(fileno(mIndexStream), F_SETFD, FD_CLOEXEC);
}
else
{
mAutoCreateIndex = false;
}
mOpenCount++;
mChanged = false;
rc = writeIndex();
if (!rc) lock();
return rc;
}
//-----------------------------------------------------------------------------
void KMFolderMbox::reallyDoClose(const char* owner)
{
Q_UNUSED( owner );
if (mAutoCreateIndex)
{
if (KMFolderIndex::IndexOk != indexStatus()) {
kdDebug(5006) << "Critical error: " << location() <<
" has been modified by an external application while KMail was running." << endl;
// exit(1); backed out due to broken nfs
}
updateIndex();
writeConfig();
}
if (!noContent()) {
if (mStream) unlock();
mMsgList.clear(true);
if (mStream) fclose(mStream);
if (mIndexStream) {
fclose(mIndexStream);
updateIndexStreamPtr(true);
}
}
mOpenCount = 0;
mStream = 0;
mIndexStream = 0;
mFilesLocked = false;
mUnreadMsgs = -1;
mMsgList.reset(INIT_MSGS);
}
//-----------------------------------------------------------------------------
void KMFolderMbox::sync()
{
if (mOpenCount > 0)
if (!mStream || fsync(fileno(mStream)) ||
!mIndexStream || fsync(fileno(mIndexStream))) {
kmkernel->emergencyExit( i18n("Could not sync index file <b>%1</b>: %2").arg( indexLocation() ).arg(errno ? TQString::fromLocal8Bit(strerror(errno)) : i18n("Internal error. Please copy down the details and report a bug.")));
}
}
//-----------------------------------------------------------------------------
int KMFolderMbox::lock()
{
int rc;
struct flock fl;
fl.l_type=F_WRLCK;
fl.l_whence=0;
fl.l_start=0;
fl.l_len=0;
fl.l_pid=-1;
TQCString cmd_str;
assert(mStream != 0);
mFilesLocked = false;
mReadOnly = false;
switch( mLockType )
{
case FCNTL:
rc = fcntl(fileno(mStream), F_SETLKW, &fl);
if (rc < 0)
{
kdDebug(5006) << "Cannot lock folder `" << location() << "': "
<< strerror(errno) << " (" << errno << ")" << endl;
mReadOnly = true;
return errno;
}
if (mIndexStream)
{
rc = fcntl(fileno(mIndexStream), F_SETLK, &fl);
if (rc < 0)
{
kdDebug(5006) << "Cannot lock index of folder `" << location() << "': "
<< strerror(errno) << " (" << errno << ")" << endl;
rc = errno;
fl.l_type = F_UNLCK;
/*rc =*/ fcntl(fileno(mIndexStream), F_SETLK, &fl);
mReadOnly = true;
return rc;
}
}
break;
case procmail_lockfile:
cmd_str = "lockfile -l20 -r5 ";
if (!mProcmailLockFileName.isEmpty())
cmd_str += TQFile::encodeName(KProcess::quote(mProcmailLockFileName));
else
cmd_str += TQFile::encodeName(KProcess::quote(location() + ".lock"));
rc = system( cmd_str.data() );
if( rc != 0 )
{
kdDebug(5006) << "Cannot lock folder `" << location() << "': "
<< strerror(rc) << " (" << rc << ")" << endl;
mReadOnly = true;
return rc;
}
if( mIndexStream )
{
cmd_str = "lockfile -l20 -r5 " + TQFile::encodeName(KProcess::quote(indexLocation() + ".lock"));
rc = system( cmd_str.data() );
if( rc != 0 )
{
kdDebug(5006) << "Cannot lock index of folder `" << location() << "': "
<< strerror(rc) << " (" << rc << ")" << endl;
mReadOnly = true;
return rc;
}
}
break;
case mutt_dotlock:
cmd_str = "mutt_dotlock " + TQFile::encodeName(KProcess::quote(location()));
rc = system( cmd_str.data() );
if( rc != 0 )
{
kdDebug(5006) << "Cannot lock folder `" << location() << "': "
<< strerror(rc) << " (" << rc << ")" << endl;
mReadOnly = true;
return rc;
}
if( mIndexStream )
{
cmd_str = "mutt_dotlock " + TQFile::encodeName(KProcess::quote(indexLocation()));
rc = system( cmd_str.data() );
if( rc != 0 )
{
kdDebug(5006) << "Cannot lock index of folder `" << location() << "': "
<< strerror(rc) << " (" << rc << ")" << endl;
mReadOnly = true;
return rc;
}
}
break;
case mutt_dotlock_privileged:
cmd_str = "mutt_dotlock -p " + TQFile::encodeName(KProcess::quote(location()));
rc = system( cmd_str.data() );
if( rc != 0 )
{
kdDebug(5006) << "Cannot lock folder `" << location() << "': "
<< strerror(rc) << " (" << rc << ")" << endl;
mReadOnly = true;
return rc;
}
if( mIndexStream )
{
cmd_str = "mutt_dotlock -p " + TQFile::encodeName(KProcess::quote(indexLocation()));
rc = system( cmd_str.data() );
if( rc != 0 )
{
kdDebug(5006) << "Cannot lock index of folder `" << location() << "': "
<< strerror(rc) << " (" << rc << ")" << endl;
mReadOnly = true;
return rc;
}
}
break;
case lock_none:
default:
break;
}
mFilesLocked = true;
return 0;
}
//-------------------------------------------------------------
FolderJob*
KMFolderMbox::doCreateJob( KMMessage *msg, FolderJob::JobType jt,
KMFolder *folder, TQString, const AttachmentStrategy* ) const
{
MboxJob *job = new MboxJob( msg, jt, folder );
job->setParent( this );
return job;
}
//-------------------------------------------------------------
FolderJob*
KMFolderMbox::doCreateJob( TQPtrList<KMMessage>& msgList, const TQString& sets,
FolderJob::JobType jt, KMFolder *folder ) const
{
MboxJob *job = new MboxJob( msgList, sets, jt, folder );
job->setParent( this );
return job;
}
//-----------------------------------------------------------------------------
int KMFolderMbox::unlock()
{
int rc;
struct flock fl;
fl.l_type=F_UNLCK;
fl.l_whence=0;
fl.l_start=0;
fl.l_len=0;
TQCString cmd_str;
assert(mStream != 0);
mFilesLocked = false;
switch( mLockType )
{
case FCNTL:
if (mIndexStream) fcntl(fileno(mIndexStream), F_SETLK, &fl);
fcntl(fileno(mStream), F_SETLK, &fl);
rc = errno;
break;
case procmail_lockfile:
cmd_str = "rm -f ";
if (!mProcmailLockFileName.isEmpty())
cmd_str += TQFile::encodeName(KProcess::quote(mProcmailLockFileName));
else
cmd_str += TQFile::encodeName(KProcess::quote(location() + ".lock"));
rc = system( cmd_str.data() );
if( mIndexStream )
{
cmd_str = "rm -f " + TQFile::encodeName(KProcess::quote(indexLocation() + ".lock"));
rc = system( cmd_str.data() );
}
break;
case mutt_dotlock:
cmd_str = "mutt_dotlock -u " + TQFile::encodeName(KProcess::quote(location()));
rc = system( cmd_str.data() );
if( mIndexStream )
{
cmd_str = "mutt_dotlock -u " + TQFile::encodeName(KProcess::quote(indexLocation()));
rc = system( cmd_str.data() );
}
break;
case mutt_dotlock_privileged:
cmd_str = "mutt_dotlock -p -u " + TQFile::encodeName(KProcess::quote(location()));
rc = system( cmd_str.data() );
if( mIndexStream )
{
cmd_str = "mutt_dotlock -p -u " + TQFile::encodeName(KProcess::quote(indexLocation()));
rc = system( cmd_str.data() );
}
break;
case lock_none:
default:
rc = 0;
break;
}
return rc;
}
//-----------------------------------------------------------------------------
KMFolderIndex::IndexStatus KMFolderMbox::indexStatus()
{
if ( !mCompactable )
return KMFolderIndex::IndexCorrupt;
TQFileInfo contInfo(location());
TQFileInfo indInfo(indexLocation());
if (!contInfo.exists()) return KMFolderIndex::IndexOk;
if (!indInfo.exists()) return KMFolderIndex::IndexMissing;
// Check whether the mbox file is more than 5 seconds newer than the index
// file. The 5 seconds are added to reduce the number of false alerts due
// to slightly out of sync clocks of the NFS server and the local machine.
return ( contInfo.lastModified() > indInfo.lastModified().addSecs(5) )
? KMFolderIndex::IndexTooOld
: KMFolderIndex::IndexOk;
}
//-----------------------------------------------------------------------------
int KMFolderMbox::createIndexFromContents()
{
char line[MAX_LINE];
char status[8], xstatus[8];
TQCString subjStr, dateStr, fromStr, toStr, xmarkStr, *lastStr=0;
TQCString replyToIdStr, replyToAuxIdStr, referencesStr, msgIdStr;
TQCString sizeServerStr, uidStr;
TQCString contentTypeStr, charset;
bool atEof = false;
bool inHeader = true;
KMMsgInfo* mi;
TQString msgStr;
TQRegExp regexp(MSG_SEPERATOR_REGEX);
int i, num, numStatus;
short needStatus;
assert(mStream != 0);
rewind(mStream);
mMsgList.clear();
num = -1;
numStatus= 11;
off_t offs = 0;
size_t size = 0;
dateStr = "";
fromStr = "";
toStr = "";
subjStr = "";
*status = '\0';
*xstatus = '\0';
xmarkStr = "";
replyToIdStr = "";
replyToAuxIdStr = "";
referencesStr = "";
msgIdStr = "";
needStatus = 3;
size_t sizeServer = 0;
ulong uid = 0;
while (!atEof)
{
off_t pos = ftell(mStream);
if (!fgets(line, MAX_LINE, mStream)) atEof = true;
if (atEof ||
(memcmp(line, MSG_SEPERATOR_START, MSG_SEPERATOR_START_LEN)==0 &&
regexp.search(line) >= 0))
{
size = pos - offs;
pos = ftell(mStream);
if (num >= 0)
{
if (numStatus <= 0)
{
msgStr = i18n("Creating index file: one message done", "Creating index file: %n messages done", num);
emit statusMsg(msgStr);
numStatus = 10;
}
if (size > 0)
{
msgIdStr = msgIdStr.stripWhiteSpace();
if( !msgIdStr.isEmpty() ) {
int rightAngle;
rightAngle = msgIdStr.find( '>' );
if( rightAngle != -1 )
msgIdStr.truncate( rightAngle + 1 );
}
replyToIdStr = replyToIdStr.stripWhiteSpace();
if( !replyToIdStr.isEmpty() ) {
int rightAngle;
rightAngle = replyToIdStr.find( '>' );
if( rightAngle != -1 )
replyToIdStr.truncate( rightAngle + 1 );
}
referencesStr = referencesStr.stripWhiteSpace();
if( !referencesStr.isEmpty() ) {
int leftAngle, rightAngle;
leftAngle = referencesStr.findRev( '<' );
if( ( leftAngle != -1 )
&& ( replyToIdStr.isEmpty() || ( replyToIdStr[0] != '<' ) ) ) {
// use the last reference, instead of missing In-Reply-To
replyToIdStr = referencesStr.mid( leftAngle );
}
// find second last reference
leftAngle = referencesStr.findRev( '<', leftAngle - 1 );
if( leftAngle != -1 )
referencesStr = referencesStr.mid( leftAngle );
rightAngle = referencesStr.findRev( '>' );
if( rightAngle != -1 )
referencesStr.truncate( rightAngle + 1 );
// Store the second to last reference in the replyToAuxIdStr
// It is a good candidate for threading the message below if the
// message In-Reply-To points to is not kept in this folder,
// but e.g. in an Outbox
replyToAuxIdStr = referencesStr;
rightAngle = referencesStr.find( '>' );
if( rightAngle != -1 )
replyToAuxIdStr.truncate( rightAngle + 1 );
}
contentTypeStr = contentTypeStr.stripWhiteSpace();
charset = "";
if ( !contentTypeStr.isEmpty() )
{
int cidx = contentTypeStr.find( "charset=" );
if ( cidx != -1 ) {
charset = contentTypeStr.mid( cidx + 8 );
if ( !charset.isEmpty() && ( charset[0] == '"' ) ) {
charset = charset.mid( 1 );
}
cidx = 0;
while ( (unsigned int) cidx < charset.length() ) {
if ( charset[cidx] == '"' || ( !isalnum(charset[cidx]) &&
charset[cidx] != '-' && charset[cidx] != '_' ) )
break;
++cidx;
}
charset.truncate( cidx );
// kdDebug() << "KMFolderMaildir::readFileHeaderIntern() charset found: " <<
// charset << " from " << contentTypeStr << endl;
}
}
mi = new KMMsgInfo(folder());
mi->init( subjStr.stripWhiteSpace(),
fromStr.stripWhiteSpace(),
toStr.stripWhiteSpace(),
0, KMMsgStatusNew,
xmarkStr.stripWhiteSpace(),
replyToIdStr, replyToAuxIdStr, msgIdStr,
KMMsgEncryptionStateUnknown, KMMsgSignatureStateUnknown,
KMMsgMDNStateUnknown, charset, offs, size, sizeServer, uid );
mi->setStatus(status, xstatus);
mi->setDate( dateStr.stripWhiteSpace() );
mi->setDirty(false);
mMsgList.append(mi, mExportsSernums );
*status = '\0';
*xstatus = '\0';
needStatus = 3;
xmarkStr = "";
replyToIdStr = "";
replyToAuxIdStr = "";
referencesStr = "";
msgIdStr = "";
dateStr = "";
fromStr = "";
subjStr = "";
sizeServer = 0;
uid = 0;
}
else num--,numStatus++;
}
offs = ftell(mStream);
num++;
numStatus--;
inHeader = true;
continue;
}
// Is this a long header line?
if (inHeader && (line[0]=='\t' || line[0]==' '))
{
i = 0;
while (line [i]=='\t' || line [i]==' ') i++;
if (line [i] < ' ' && line [i]>0) inHeader = false;
else if (lastStr) *lastStr += line + i;
}
else lastStr = 0;
if (inHeader && (line [0]=='\n' || line [0]=='\r'))
inHeader = false;
if (!inHeader) continue;
/* -sanders Make all messages read when auto-recreating index */
/* Reverted, as it breaks reading the sent mail status, for example.
-till */
if ((needStatus & 1) && strncasecmp(line, "Status:", 7) == 0)
{
for(i=0; i<4 && line[i+8] > ' '; i++)
status[i] = line[i+8];
status[i] = '\0';
needStatus &= ~1;
}
else if ((needStatus & 2) && strncasecmp(line, "X-Status:", 9)==0)
{
for(i=0; i<4 && line[i+10] > ' '; i++)
xstatus[i] = line[i+10];
xstatus[i] = '\0';
needStatus &= ~2;
}
else if (strncasecmp(line,"X-KMail-Mark:",13)==0)
xmarkStr = TQCString(line+13);
else if (strncasecmp(line,"In-Reply-To:",12)==0) {
replyToIdStr = TQCString(line+12);
lastStr = &replyToIdStr;
}
else if (strncasecmp(line,"References:",11)==0) {
referencesStr = TQCString(line+11);
lastStr = &referencesStr;
}
else if (strncasecmp(line,"Message-Id:",11)==0) {
msgIdStr = TQCString(line+11);
lastStr = &msgIdStr;
}
else if (strncasecmp(line,"Date:",5)==0)
{
dateStr = TQCString(line+5);
lastStr = &dateStr;
}
else if (strncasecmp(line,"From:", 5)==0)
{
fromStr = TQCString(line+5);
lastStr = &fromStr;
}
else if (strncasecmp(line,"To:", 3)==0)
{
toStr = TQCString(line+3);
lastStr = &toStr;
}
else if (strncasecmp(line,"Subject:",8)==0)
{
subjStr = TQCString(line+8);
lastStr = &subjStr;
}
else if (strncasecmp(line,"X-Length:",9)==0)
{
sizeServerStr = TQCString(line+9);
sizeServer = sizeServerStr.toULong();
lastStr = &sizeServerStr;
}
else if (strncasecmp(line,"X-UID:",6)==0)
{
uidStr = TQCString(line+6);
uid = uidStr.toULong();
lastStr = &uidStr;
}
else if (strncasecmp(line, "Content-Type:", 13) == 0)
{
contentTypeStr = TQCString(line+13);
lastStr = &contentTypeStr;
}
}
if (mAutoCreateIndex)
{
emit statusMsg(i18n("Writing index file"));
writeIndex();
}
else mHeaderOffset = 0;
correctUnreadMsgsCount();
if (kmkernel->outboxFolder() == folder() && count() > 0)
KMessageBox::queuedMessageBox(0, KMessageBox::Information,
i18n("Your outbox contains messages which were "
"most-likely not created by KMail;\nplease remove them from there if you "
"do not want KMail to send them."));
invalidateFolder();
return 0;
}
//-----------------------------------------------------------------------------
KMMessage* KMFolderMbox::readMsg(int idx)
{
KMMsgInfo* mi = (KMMsgInfo*)mMsgList[idx];
assert(mi!=0 && !mi->isMessage());
assert(mStream != 0);
KMMessage *msg = new KMMessage(*mi);
msg->setMsgInfo( mi ); // remember the KMMsgInfo object to that we can restore it when the KMMessage object is no longer needed
mMsgList.set(idx,&msg->toMsgBase()); // done now so that the serial number can be computed
msg->fromDwString(getDwString(idx));
return msg;
}
#define STRDIM(x) (sizeof(x)/sizeof(*x)-1)
// performs (\n|^)>{n}From_ -> \1>{n-1}From_ conversion
static size_t unescapeFrom( char* str, size_t strLen ) {
if ( !str )
return 0;
if ( strLen <= STRDIM(">From ") )
return strLen;
// yes, *d++ = *s++ is a no-op as long as d == s (until after the
// first >From_), but writes are cheap compared to reads and the
// data is already in the cache from the read, so special-casing
// might even be slower...
const char * s = str;
char * d = str;
const char * const e = str + strLen - STRDIM(">From ");
while ( s < e ) {
if ( *s == '\n' && *(s+1) == '>' ) { // we can do the lookahead, since e is 6 chars from the end!
*d++ = *s++; // == '\n'
*d++ = *s++; // == '>'
while ( s < e && *s == '>' )
*d++ = *s++;
if ( qstrncmp( s, "From ", STRDIM("From ") ) == 0 )
--d;
}
*d++ = *s++; // yes, s might be e here, but e is not the end :-)
}
// copy the rest:
while ( s < str + strLen )
*d++ = *s++;
if ( d < s ) // only NUL-terminate if it's shorter
*d = 0;
return d - str;
}
//static
TQByteArray KMFolderMbox::escapeFrom( const DwString & str ) {
const unsigned int strLen = str.length();
if ( strLen <= STRDIM("From ") )
return KMail::Util::ByteArray( str );
// worst case: \nFrom_\nFrom_\nFrom_... => grows to 7/6
TQByteArray result( int( strLen + 5 ) / 6 * 7 + 1 );
const char * s = str.data();
const char * const e = s + strLen - STRDIM("From ");
char * d = result.data();
bool onlyAnglesAfterLF = false; // dont' match ^From_
while ( s < e ) {
switch ( *s ) {
case '\n':
onlyAnglesAfterLF = true;
break;
case '>':
break;
case 'F':
if ( onlyAnglesAfterLF && qstrncmp( s+1, "rom ", STRDIM("rom ") ) == 0 )
*d++ = '>';
// fall through
default:
onlyAnglesAfterLF = false;
break;
}
*d++ = *s++;
}
while ( s < str.data() + strLen )
*d++ = *s++;
result.truncate( d - result.data() );
return result;
}
#undef STRDIM
//-----------------------------------------------------------------------------
DwString KMFolderMbox::getDwString(int idx)
{
KMMsgInfo* mi = (KMMsgInfo*)mMsgList[idx];
assert(mi!=0);
assert(mStream != 0);
size_t msgSize = mi->msgSize();
char* msgText = new char[ msgSize + 1 ];
fseek(mStream, mi->folderOffset(), SEEK_SET);
fread(msgText, msgSize, 1, mStream);
msgText[msgSize] = '\0';
size_t newMsgSize = unescapeFrom( msgText, msgSize );
newMsgSize = KMail::Util::crlf2lf( msgText, newMsgSize );
DwString msgStr;
// the DwString takes possession of msgText, so we must not delete msgText
msgStr.TakeBuffer( msgText, msgSize + 1, 0, newMsgSize );
return msgStr;
}
//-----------------------------------------------------------------------------
int KMFolderMbox::addMsg( KMMessage* aMsg, int* aIndex_ret )
{
if (!canAddMsgNow(aMsg, aIndex_ret)) return 0;
TQByteArray msgText;
char endStr[3];
int idx = -1, rc;
KMFolder* msgParent;
bool editing = false;
int growth = 0;
KMFolderOpener openThis(folder(), "mboxaddMsg");
rc = openThis.openResult();
if (rc)
{
kdDebug(5006) << "KMFolderMbox::addMsg-open: " << rc << " of folder: " << label() << endl;
return rc;
}
// take message out of the folder it is currently in, if any
msgParent = aMsg->parent();
if (msgParent)
{
if ( msgParent== folder() )
{
if (kmkernel->folderIsDraftOrOutbox( folder() ))
//special case for Edit message.
{
kdDebug(5006) << "Editing message in outbox or drafts" << endl;
editing = true;
}
else
return 0;
}
idx = msgParent->find(aMsg);
msgParent->getMsg( idx );
}
if (folderType() != KMFolderTypeImap)
{
/*
TQFile fileD0( "testdat_xx-kmfoldermbox-0" );
if( fileD0.open( IO_WriteOnly ) ) {
TQDataStream ds( &fileD0 );
ds.writeRawBytes( aMsg->asString(), aMsg->asString().length() );
fileD0.close(); // If data is 0 we just create a zero length file.
}
*/
aMsg->setStatusFields();
/*
TQFile fileD1( "testdat_xx-kmfoldermbox-1" );
if( fileD1.open( IO_WriteOnly ) ) {
TQDataStream ds( &fileD1 );
ds.writeRawBytes( aMsg->asString(), aMsg->asString().length() );
fileD1.close(); // If data is 0 we just create a zero length file.
}
*/
if (aMsg->headerField("Content-Type").isEmpty()) // This might be added by
aMsg->removeHeaderField("Content-Type"); // the line above
}
msgText = escapeFrom( aMsg->asDwString() );
size_t len = msgText.size();
assert(mStream != 0);
clearerr(mStream);
if (len <= 0)
{
kdDebug(5006) << "Message added to folder `" << name() << "' contains no data. Ignoring it." << endl;
return 0;
}
// Make sure the file is large enough to check for an end
// character
fseek(mStream, 0, SEEK_END);
off_t revert = ftell(mStream);
if (ftell(mStream) >= 2) {
// write message to folder file
fseek(mStream, -2, SEEK_END);
fread(endStr, 1, 2, mStream); // ensure separating empty line
if (ftell(mStream) > 0 && endStr[0]!='\n') {
++growth;
if (endStr[1]!='\n') {
//printf ("****endStr[1]=%c\n", endStr[1]);
fwrite("\n\n", 1, 2, mStream);
++growth;
}
else fwrite("\n", 1, 1, mStream);
}
}
fseek(mStream,0,SEEK_END); // this is needed on solaris and others
int error = ferror(mStream);
if (error)
return error;
TQCString messageSeparator( aMsg->mboxMessageSeparator() );
fwrite( messageSeparator.data(), messageSeparator.length(), 1, mStream );
off_t offs = ftell(mStream);
fwrite(msgText.data(), len, 1, mStream);
if (msgText[(int)len-1]!='\n') fwrite("\n\n", 1, 2, mStream);
fflush(mStream);
size_t size = ftell(mStream) - offs;
error = ferror(mStream);
if (error) {
kdDebug(5006) << "Error: Could not add message to folder: " << strerror(errno) << endl;
if (ftell(mStream) > revert) {
kdDebug(5006) << "Undoing changes" << endl;
truncate( TQFile::encodeName(location()), revert );
}
kmkernel->emergencyExit( i18n("Could not add message to folder: ") + TQString::fromLocal8Bit(strerror(errno)));
/* This code is not 100% reliable
bool busy = kmkernel->kbp()->isBusy();
if (busy) kmkernel->kbp()->idle();
KMessageBox::sorry(0,
i18n("Unable to add message to folder.\n"
"(No space left on device or insufficient quota?)\n"
"Free space and sufficient quota are required to continue safely."));
if (busy) kmkernel->kbp()->busy();
kmkernel->kbp()->idle();
*/
return error;
}
if (msgParent) {
if (idx >= 0) msgParent->take(idx);
}
// if (mAccount) aMsg->removeHeaderField("X-UID");
if (aMsg->isUnread() || aMsg->isNew() ||
(folder() == kmkernel->outboxFolder())) {
if (mUnreadMsgs == -1) mUnreadMsgs = 1;
else ++mUnreadMsgs;
if ( !mQuiet )
emit numUnreadMsgsChanged( folder() );
}
++mTotalMsgs;
mSize = -1;
if ( aMsg->attachmentState() == KMMsgAttachmentUnknown && aMsg->readyToShow() ) {
aMsg->updateAttachmentState();
}
if ( aMsg->invitationState() == KMMsgInvitationUnknown && aMsg->readyToShow() ) {
aMsg->updateInvitationState();
}
// store information about the position in the folder file in the message
aMsg->setParent(folder());
aMsg->setFolderOffset(offs);
aMsg->setMsgSize(size);
idx = mMsgList.append(&aMsg->toMsgBase(), mExportsSernums );
if ( aMsg->getMsgSerNum() <= 0 )
aMsg->setMsgSerNum();
else
replaceMsgSerNum( aMsg->getMsgSerNum(), &aMsg->toMsgBase(), idx );
// change the length of the previous message to encompass white space added
if ((idx > 0) && (growth > 0)) {
// don't grow if a deleted message claims space at the end of the file
if ((ulong)revert == mMsgList[idx - 1]->folderOffset() + mMsgList[idx - 1]->msgSize() )
mMsgList[idx - 1]->setMsgSize( mMsgList[idx - 1]->msgSize() + growth );
}
// write index entry if desired
if (mAutoCreateIndex)
{
assert(mIndexStream != 0);
clearerr(mIndexStream);
fseek(mIndexStream, 0, SEEK_END);
revert = ftell(mIndexStream);
KMMsgBase * mb = &aMsg->toMsgBase();
int len;
const uchar *buffer = mb->asIndexString(len);
fwrite(&len,sizeof(len), 1, mIndexStream);
mb->setIndexOffset( ftell(mIndexStream) );
mb->setIndexLength( len );
if(fwrite(buffer, len, 1, mIndexStream) != 1)
kdDebug(5006) << "Whoa! " << __FILE__ << ":" << __LINE__ << endl;
fflush(mIndexStream);
error = ferror(mIndexStream);
if ( mExportsSernums )
error |= appendToFolderIdsFile( idx );
if (error) {
kdWarning(5006) << "Error: Could not add message to folder (No space left on device?)" << endl;
if (ftell(mIndexStream) > revert) {
kdWarning(5006) << "Undoing changes" << endl;
truncate( TQFile::encodeName(indexLocation()), revert );
}
if ( errno )
kmkernel->emergencyExit( i18n("Could not add message to folder:") + TQString::fromLocal8Bit(strerror(errno)));
else
kmkernel->emergencyExit( i18n("Could not add message to folder (No space left on device?)") );
/* This code may not be 100% reliable
bool busy = kmkernel->kbp()->isBusy();
if (busy) kmkernel->kbp()->idle();
KMessageBox::sorry(0,
i18n("Unable to add message to folder.\n"
"(No space left on device or insufficient quota?)\n"
"Free space and sufficient quota are required to continue safely."));
if (busy) kmkernel->kbp()->busy();
*/
return error;
}
}
if (aIndex_ret) *aIndex_ret = idx;
emitMsgAddedSignals(idx);
// All streams have been flushed without errors if we arrive here
// Return success!
// (Don't return status of stream, it may have been closed already.)
return 0;
}
int KMFolderMbox::compact( unsigned int startIndex, int nbMessages, FILE* tmpfile, off_t& offs, bool& done )
{
int rc = 0;
TQCString mtext;
unsigned int stopIndex = nbMessages == -1 ? mMsgList.count() :
QMIN( mMsgList.count(), startIndex + nbMessages );
//kdDebug(5006) << "KMFolderMbox: compacting from " << startIndex << " to " << stopIndex << endl;
for(unsigned int idx = startIndex; idx < stopIndex; ++idx) {
KMMsgInfo* mi = (KMMsgInfo*)mMsgList.at(idx);
size_t msize = mi->msgSize();
if (mtext.size() < msize + 2)
mtext.resize(msize+2);
off_t folder_offset = mi->folderOffset();
//now we need to find the separator! grr...
for(off_t i = folder_offset-25; true; i -= 20) {
off_t chunk_offset = i <= 0 ? 0 : i;
if(fseek(mStream, chunk_offset, SEEK_SET) == -1) {
rc = errno;
break;
}
if (mtext.size() < 20)
mtext.resize(20);
fread(mtext.data(), 20, 1, mStream);
if(i <= 0) { //woops we've reached the top of the file, last try..
if ( mtext.contains( "from ", false ) ) {
if (mtext.size() < (size_t)folder_offset)
mtext.resize(folder_offset);
if(fseek(mStream, chunk_offset, SEEK_SET) == -1 ||
!fread(mtext.data(), folder_offset, 1, mStream) ||
!fwrite(mtext.data(), folder_offset, 1, tmpfile)) {
rc = errno;
break;
}
offs += folder_offset;
} else {
rc = 666;
}
break;
} else {
int last_crlf = -1;
for(int i2 = 0; i2 < 20; i2++) {
if(*(mtext.data()+i2) == '\n')
last_crlf = i2;
}
if(last_crlf != -1) {
int size = folder_offset - (i + last_crlf+1);
if ((int)mtext.size() < size)
mtext.resize(size);
if(fseek(mStream, i + last_crlf+1, SEEK_SET) == -1 ||
!fread(mtext.data(), size, 1, mStream) ||
!fwrite(mtext.data(), size, 1, tmpfile)) {
rc = errno;
break;
}
offs += size;
break;
}
}
}
if (rc)
break;
//now actually write the message
if(fseek(mStream, folder_offset, SEEK_SET) == -1 ||
!fread(mtext.data(), msize, 1, mStream) || !fwrite(mtext.data(), msize, 1, tmpfile)) {
rc = errno;
break;
}
mi->setFolderOffset(offs);
offs += msize;
}
done = ( !rc && stopIndex == mMsgList.count() ); // finished without errors
return rc;
}
//-----------------------------------------------------------------------------
int KMFolderMbox::compact( bool silent )
{
// This is called only when the user explicitely requests compaction,
// so we don't check needsCompact.
KMail::MboxCompactionJob* job = new KMail::MboxCompactionJob( folder(), true /*immediate*/ );
int rc = job->executeNow( silent );
// Note that job autodeletes itself.
// If this is the current folder, the changed signal will ultimately call
// KMHeaders::setFolderInfoStatus which will override the message, so save/restore it
TQString statusMsg = BroadcastStatus::instance()->statusMsg();
emit changed();
BroadcastStatus::instance()->setStatusMsg( statusMsg );
return rc;
}
//-----------------------------------------------------------------------------
void KMFolderMbox::setLockType( LockType ltype )
{
mLockType = ltype;
}
//-----------------------------------------------------------------------------
void KMFolderMbox::setProcmailLockFileName( const TQString &fname )
{
mProcmailLockFileName = fname;
}
//-----------------------------------------------------------------------------
int KMFolderMbox::removeContents()
{
int rc = 0;
rc = unlink(TQFile::encodeName(location()));
return rc;
}
//-----------------------------------------------------------------------------
int KMFolderMbox::expungeContents()
{
int rc = 0;
if (truncate(TQFile::encodeName(location()), 0))
rc = errno;
return rc;
}
//-----------------------------------------------------------------------------
/*virtual*/
Q_INT64 KMFolderMbox::doFolderSize() const
{
TQFileInfo info( location() );
return (Q_INT64)(info.size());
}
//-----------------------------------------------------------------------------
#include "kmfoldermbox.moc"
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