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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include <f32file.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "dbus-bus.h"
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#include <dbus/config.h>
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#include <unistd.h>
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#include <sys/sem.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include "dbus-internals.h"
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#include <string.h>
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#include <dbus-userdb.h>
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#include <dbus-string.h>
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#include <sys/stat.h>
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#define SEM_FILE_PATH "c:\\data\\dbus"
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extern "C"
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{
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int check_lock()
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{
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int fd;
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TBuf8<30>buf;
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buf.Copy((const TUint8 *)DBUS_LOCK_FILE);
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TBuf16<30>buf16;
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buf16.Copy(buf);
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if ((fd = open(DBUS_LOCK_FILE, O_EXCL | O_CREAT )) == -1)
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{
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if(errno==EEXIST)
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{
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RFs rf;
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User::LeaveIfError(rf.Connect());
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RFile fds;
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User::LeaveIfError(fds.Open(rf,buf16,EFileShareAny));
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if(fds.Lock(0,10) == KErrNone) //file exists and not locked
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{
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_dbus_verbose ("c:\\data\\dbus\\dbus_lock file exist and is lock-free - dbusdaemon not running\n");
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fds.UnLock(0,10);
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fds.Close();
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return 1;
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}
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else //file exists and is locked
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{
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_dbus_verbose ("c:\\data\\dbus\\dbus_lock file exist and is locked - dbusdaemon running\n");
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fds.Close();
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return 0;
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}
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}
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else //file is created
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{
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_dbus_verbose ("c:\\data\\dbus\\dbus_lock file doesnt exist and is lockfree - dbusdaemon not running\n");
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close(fd);
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return 1;
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}
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}
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else //file is created
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{
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_dbus_verbose ("c:\\data\\dbus\\dbus_lock file doesnt exist and is lockfree - dbusdaemon not running\n");
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close(fd);
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return 1;
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}
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}
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int _dbus_semaphore_init()
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{
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union semun sem_val;
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int sem_set_id,perm;
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int proj_id = 100;
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key_t fkey;
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struct stat sb;
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if(stat (SEM_FILE_PATH, &sb)<0)
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{
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_dbus_verbose ("c:\\data\\dbus directory doesnt exist\n");
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if(mkdir(SEM_FILE_PATH , 0666) < 0 )
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{
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_dbus_verbose ("failed to create c:\\data\\dbus directory\n");
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return -1;
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}
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}
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if ((fkey = ftok(SEM_FILE_PATH, proj_id)) == -1) {
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_dbus_verbose ("ftok() failed with error : %d\n",errno);
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return FALSE;
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}
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perm = SEM_R | SEM_A | SEM_A>>6 | SEM_R>>6;
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if(((sem_set_id = semget(fkey, 1, perm)))== -1) {
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if((sem_set_id = semget(fkey, 1, IPC_CREAT | perm))==-1)
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{
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_dbus_verbose ("Failed to create the semaphore with error : %d\n",errno);
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return FALSE;
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}
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}
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else
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return sem_set_id;
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_dbus_verbose ("semaphore created successfully with key : %d\n",fkey);
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sem_val.array = NULL;
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sem_val.buf = NULL;
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sem_val.val = 1;
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if(semctl(sem_set_id, 0, SETVAL, sem_val) == -1) {
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_dbus_verbose ("Failed to initialize the semaphore with error : %d\n",errno);
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if(semctl(sem_set_id, 1, IPC_RMID) == -1) {
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_dbus_verbose ("Failed to delete the semaphore with error : %d\n",errno);
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}
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return FALSE;
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}
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_dbus_verbose ("semaphore value successfully initialized to 1\n");
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return sem_set_id;
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}
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int _dbus_semaphore_dec()
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{
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struct sembuf sem_op;
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/*
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* Wait on the semaphore till the value is non-negative.
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*/
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int sem_set_id;
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sem_set_id = _dbus_semaphore_init();
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if(sem_set_id == FALSE)
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return FALSE;
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sem_op.sem_num = 0;
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sem_op.sem_op = -1;
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sem_op.sem_flg = 0;
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if( semop(sem_set_id, &sem_op, 1) <0)
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{
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_dbus_verbose ("Failed to decrement the semaphore with error : %d\n",errno);
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return FALSE;
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}
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_dbus_verbose ("semaphore value decremented by 1\n");
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return TRUE;
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}
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int _dbus_semaphore_inc()
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{
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struct sembuf sem_op;
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int sem_set_id;
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sem_set_id = _dbus_semaphore_init();
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sem_op.sem_num = 0;
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sem_op.sem_op = 1;
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sem_op.sem_flg = 0;
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if(semop(sem_set_id, &sem_op, 1)<0)
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{
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_dbus_verbose ("Failed to increment the semaphore with error : %d\n",errno);
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return FALSE;
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}
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_dbus_verbose ("semaphore value incremented by 1\n");
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return TRUE;
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}
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int dbus_create_private_directory(const char* dir)
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{
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RFs fs;
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if(mkdir(dir,0666) < 0)
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return FALSE;
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return TRUE;;
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}
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int _dbus_file_open_and_write(unsigned const char* sid_directory)
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{
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TBuf8<100>Filename8 = _L8("C:\\private\\");
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struct stat sb;
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Filename8.Append(sid_directory,strlen((const char*)sid_directory));
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if(stat ((const char*)Filename8.PtrZ(), &sb)<0)
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{
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_dbus_verbose ("c:\\private\\<SID> directory doesnt exist\n");
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if(!dbus_create_private_directory((const char*)Filename8.PtrZ()))
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return FALSE;
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}
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Filename8.Append(_L8("\\foobar_"));
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Filename8.Append(sid_directory,strlen((const char*)sid_directory));
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TBuf16<100>Filename16;
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Filename16.Copy(Filename8);
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RFs fs;
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if(fs.Connect()!= KErrNone)
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{
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return FALSE;
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}
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RFile file;
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if(file.Replace(fs,Filename16,EFileWrite) != KErrNone)
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{
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fs.Close();
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return FALSE;
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}
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if(file.SetAtt(KEntryAttHidden,0) != KErrNone)
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{
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file.Close();
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fs.Close();
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return FALSE;
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}
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if((file.Flush())!=KErrNone)
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{
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file.Close();
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fs.Close();
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return FALSE;
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}
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file.Close();
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fs.Close();
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return TRUE;
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}
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int _dbus_file_open_for_write(const unsigned char* data)
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{
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const unsigned char* sid_directory;
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const DBusString *homedir;
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dbus_bool_t retval;
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DBusString dirname;
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retval = FALSE;
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TBuf8<100>Filename8;
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TBuf16<50>Filename16;
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RFs fs;
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RFile file;
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TBuf8<100>pid_data(data);
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if(!_dbus_homedir_from_current_process(&homedir)) //getting the private or homedir directory of the process
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{
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goto out_0;
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}
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//*(char*)(homedir->dummy1) = 'C';
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if(!_dbus_string_init(&dirname))
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return FALSE;
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_dbus_string_copy(homedir,0,&dirname,0);
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*(char*)(dirname.dummy1) = 'C';
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//sid_directory = (const unsigned char*)_dbus_string_get_const_data(homedir);
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sid_directory = (const unsigned char*)_dbus_string_get_const_data(&dirname);
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Filename8.Append(sid_directory,strlen((const char*)sid_directory));
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Filename8.Append(_L8("\\foobar_"));
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Filename8.Append(sid_directory + 11,strlen((const char*)sid_directory + 11));
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Filename16.Copy(Filename8);
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User::LeaveIfError(fs.Connect());
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User::LeaveIfError(file.Open(fs,Filename16,EFileRead));
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file.Close();
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User::LeaveIfError(file.Open(fs,Filename16,EFileWrite));
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User::LeaveIfError(file.Write(pid_data));
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retval = TRUE;
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out_0 :
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_dbus_string_free(&dirname);
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file.Close();
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fs.Close();
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return retval;
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}
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int _dbus_open_file_for_read(const unsigned char* pid,const unsigned char* hash,const unsigned char* sid_directory)
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{
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dbus_bool_t retval;
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retval = FALSE;
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TBuf8<100>Filename8 = _L8("c:\\private\\");
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Filename8.Append(sid_directory,strlen((const char*)sid_directory));
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//Filename8.Append(_L8("\\foobar"));
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Filename8.Append(_L8("\\foobar_"));
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Filename8.Append(sid_directory,strlen((const char*)sid_directory));
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TBuf16<100>Filename16;
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Filename16.Copy(Filename8);
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RFs fs;
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if(fs.Connect()!=KErrNone)
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{
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return FALSE;
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}
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RFile file;
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if(file.Open(fs,Filename16,EFileRead) != KErrNone)
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{
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fs.Close();
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return FALSE;
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}
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TBuf8<200>read_data;
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if(file.Read(read_data) != KErrNone)
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{
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fs.Close();
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return FALSE;
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}
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char read_buffer[200] = "";
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strcpy(read_buffer,(char*)read_data.PtrZ());
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char provided_data[200] = "";
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strcpy(provided_data,(char*)pid);
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strcat(provided_data," ");
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strcat(provided_data,(char*)hash);
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if(strcmp(provided_data,read_buffer))
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{
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goto out_0;
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}
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retval = TRUE;
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out_0 :
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file.Close();
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fs.Delete(Filename16);
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fs.Close();
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return retval;
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}
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} //end extern"C"
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