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#ifndef __COMMON_H__
#define __COMMON_H__
#define KDIALOGD_APP
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <time.h>
#include "config.h"
#ifdef __KDIALOGD_H__
#include <kstandarddirs.h>
#endif
typedef enum
{
OP_NULL = 0,
OP_FILE_OPEN = 1,
OP_FILE_OPEN_MULTIPLE = 2,
OP_FILE_SAVE = 3,
OP_FOLDER = 4
} Operation;
#define PID_DIR "kde-"
#define PID_NAME "kdialogd.pid"
static const char * getPidFileName()
{
static char *pidfile=NULL;
if(!pidfile)
{
char *user=getenv("USER");
if(!user)
user=getenv("LOGNAME");
if(user)
{
char *tmp=getenv("KDETMP");
if(!tmp || !tmp[0])
tmp=getenv("TMPDIR");
if(!tmp || !tmp[0])
tmp=(char *)"/tmp";
pidfile=(char *)malloc(strlen(tmp)+strlen(PID_DIR)+strlen(user)+strlen(PID_NAME)+1);
pidfile=(char *)malloc(strlen(tmp)+strlen("/")+strlen(PID_DIR)+strlen(user)+strlen("/")+strlen(PID_NAME)+1);
#ifdef __KDIALOGD_H__
// We are kdialogd - so create socket folder if it does not exist...
sprintf(pidfile, "%s/%s%s", tmp, PID_DIR, user);
KStandardDirs::makeDir(QString::fromAscii(pidfile));
#endif
/* CPD: TODO get dispaly number! */
sprintf(pidfile, "%s/%s%s/%s", tmp, PID_DIR, user, PID_NAME);
}
}
return pidfile;
}
#define SOCK_DIR "ksocket-"
#define SOCK_NAME "kdialogd"
static const char * getSockName()
{
static char *sock=NULL;
if(!sock)
{
char *user=getenv("USER");
if(!user)
user=getenv("LOGNAME");
if(user)
{
char *tmp=getenv("KDETMP");
if(!tmp || !tmp[0])
tmp=getenv("TMPDIR");
if(!tmp || !tmp[0])
tmp=(char *)"/tmp";
sock=(char *)malloc(strlen(tmp)+strlen("/")+strlen(SOCK_DIR)+strlen(user)+strlen("/")+strlen(SOCK_NAME)+strlen("18446744073709551616")+1);
#ifdef __KDIALOGD_H__
// We are kdialogd - so create socket folder if it does not exist...
sprintf(sock, "%s/%s%s", tmp, SOCK_DIR, user);
KStandardDirs::makeDir(QString::fromAscii(sock));
#endif
/* CPD: TODO get dispaly number! */
sprintf(sock, "%s/%s%s/%s-%d", tmp, SOCK_DIR, user, SOCK_NAME, 1);
}
}
return sock;
}
static int readBlock(int fd, char* pData, int size)
{
int bytesToRead=size;
do
{
fd_set fdSet;
FD_ZERO(&fdSet);
FD_SET(fd, &fdSet);
if(select(fd + 1, &fdSet, NULL, NULL, NULL)<0)
return 0;
if(FD_ISSET(fd, &fdSet))
{
int bytesRead=read(fd, &pData[size-bytesToRead], bytesToRead);
if (bytesRead>0)
bytesToRead-=bytesRead;
else
return 0;
}
}
while(bytesToRead>0);
return 1;
}
static int writeBlock(int fd, const char *pData, int size)
{
int bytesToWrite=size;
do
{
fd_set fdSet;
FD_ZERO(&fdSet);
FD_SET(fd, &fdSet);
if(select(fd + 1, NULL, &fdSet, NULL, NULL)<0)
return 0;
if(FD_ISSET(fd, &fdSet))
{
int bytesWritten=write(fd, (char *)&pData[size-bytesToWrite], bytesToWrite);
if (bytesWritten>0)
bytesToWrite-=bytesWritten;
else
return 0;
}
}
while(bytesToWrite>0);
return 1;
}
#ifdef KDIALOGD_APP
/*
So that kdailogd can terminate when the last app exits, need a way of synchronising the Gtk/Qt
apps that may wish to connect, and the removal of the socket.
To this en, a lockfile is created,and used to guard around the critical sections
*/
static int lockFd=-1;
#define LOCK_EXT ".lock"
const char * getLockName()
{
static char *lockName=NULL;
if(!lockName)
{
const char *sock=getSockName();
if(sock)
{
lockName=(char *)malloc(strlen(sock)+strlen(LOCK_EXT)+1);
sprintf(lockName, "%s%s", sock, LOCK_EXT);
}
}
return lockName;
}
/* Lock is stale if it does not exist or is older than 2 seconds */
static int isStale(const char *fname)
{
struct stat stat_buf;
return 0!=stat(fname, &stat_buf) ||
abs(stat_buf.st_mtime-time(NULL))>2;
}
static int grabLock(int tries)
{
do
{
lockFd=open(getLockName(), O_WRONLY | O_CREAT | O_EXCL, 0777);
if (lockFd<0 && errno==EEXIST)
{
/* Hmm, lock file already exists. Is it stale? */
if(isStale(getLockName()))
{
tries++; /* Increment tries so that we try again... */
unlink(getLockName());
}
else if(tries)
usleep(100000);
}
}
while(lockFd<0 && --tries);
return lockFd;
}
static void releaseLock()
{
if(lockFd>0)
{
close(lockFd);
unlink(getLockName());
}
}
#endif
#endif
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