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/* Some functions to handle the linetime linked list, which allows
* idled to log an error message that it can't warn a user, but also
* be sure that it only logs the error once. The error is usually
* formed from the user getting killed (most likely from idled) and
* the utmp file not getting updated to say that the user is no
* longer logged in. As soon as the utmp file is updated, the bad
* line is removed from the list.
*/
#include "idled.h"
/* Check to see if this user structure can remove any old items */
void checklinetimeremove(him,list)
struct user *him;
struct linetime **list;
{
struct linetime **ptr, *tmp;
/* Can't do anything with an empty list */
if (*list == NULL)
return;
ptr = list;
while (*ptr != NULL)
{
/* If it is the same line, and the times are not the same,
* then this line hs being used again and should be removed
* from the list
*/
if (strcmp(him->line,(*ptr)->line) == 0 && him->time_on != (*ptr)->time_on)
{
/* Remove this one! */
tmp = *ptr;
*ptr = (*ptr)->next;
free(tmp);
}
else /* Move on to the next one */
ptr = &((*ptr)->next);
}
}
/* Check to see if this user structure can remove any old items */
void addlinetime(him,list)
struct user *him;
struct linetime **list;
{
struct linetime *tmp;
/* Make the start of the list, if necessary */
if (*list == NULL)
{
*list = (struct linetime *) malloc(sizeof (struct linetime));
strcpy((*list)->line,him->line);
(*list)->time_on = him->time_on;
(*list)->next = NULL;
return;
}
/* Insert this baby right at the start */
tmp = (struct linetime *) malloc(sizeof (struct linetime));
strcpy(tmp->line,him->line);
tmp->time_on = him->time_on;
tmp->next = *list;
*list = tmp;
}
/* Check to see if this user/line has already been inserted in the
* list. If so, return TRUE so that warn.c knows not to log the
* error again.
*/
int inlinetime(him,list)
struct user *him;
struct linetime **list;
{
struct linetime *ptr;
/* Can't do anything with an empty list */
if (*list == NULL)
return FALSE;
ptr = *list;
while (ptr != NULL)
{
/* If it is the same line, and the times are the same, return TRUE */
if (strcmp(him->line,ptr->line) == 0 && him->time_on == ptr->time_on)
{
return TRUE;
}
/* Move on to the next one */
ptr = ptr->next;
}
return FALSE;
}
void printlinetimelist(list)
struct linetime *list;
{
while (list != NULL)
{
/* If it is the same line, and the times are the same, return TRUE */
printf("Element: %14s : %d\n",list->line,list->time_on);
/* Move on to the next one */
list = list->next;
}
}
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