#include "xsm.h"
#include "lock.h"
#include "choose.h"
#include <sys/types.h>
static char *
GetPath(void)
{
char *path = (char *) getenv ("SM_SAVE_DIR");
if (!path)
{
path = (char *) getenv ("HOME");
if (!path)
path = ".";
}
return (path);
}
Status
LockSession(char *session_name, Bool write_id)
{
char *path;
char lock_file[PATH_MAX];
char temp_lock_file[PATH_MAX];
Status status;
int fd;
path = GetPath ();
#ifndef __UNIXOS2__
sprintf (lock_file, "%s/.XSMlock-%s", path, session_name);
sprintf (temp_lock_file, "%s/.XSMtlock-%s", path, session_name);
#else
sprintf (temp_lock_file, "%s/%s.slk", path, session_name);
#endif
if ((fd = creat (temp_lock_file, 0444)) < 0)
return (0);
if ((write_id &&
(write (fd, networkIds, strlen (networkIds)) != strlen (networkIds))) ||
(write (fd, "\n", 1) != 1))
{
close (fd);
return (0);
}
close (fd);
#ifndef __UNIXOS2__
status = 1;
if (link (temp_lock_file, lock_file) < 0)
status = 0;
if (unlink (temp_lock_file) < 0)
status = 0;
#else
status = 0;
#endif
return (status);
}
void
UnlockSession(char *session_name)
{
char *path;
char lock_file[PATH_MAX];
path = GetPath ();
sprintf (lock_file, "%s/.XSMlock-%s", path, session_name);
unlink (lock_file);
}
char *
GetLockId(char *session_name)
{
char *path;
FILE *fp;
char lock_file[PATH_MAX];
char buf[256];
char *ret;
path = GetPath ();
sprintf (lock_file, "%s/.XSMlock-%s", path, session_name);
if ((fp = fopen (lock_file, "r")) == NULL)
{
return (NULL);
}
buf[0] = '\0';
fscanf (fp, "%s\n", buf);
ret = XtNewString (buf);
fclose (fp);
return (ret);
}
Bool
CheckSessionLocked(char *session_name, Bool get_id, char **id_ret)
{
if (get_id)
*id_ret = GetLockId (session_name);
if (!LockSession (session_name, False))
return (1);
UnlockSession (session_name);
return (0);
}
void
UnableToLockSession(char *session_name)
{
#ifdef XKB
XkbStdBell(XtDisplay(topLevel),XtWindow(topLevel),0,XkbBI_Failure);
#else
XBell (XtDisplay (topLevel), 0);
#endif
sleep (2);
ChooseSession ();
}