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/* ----------------------------------------------------------------------- *
*
* nsswitch.c - module to call parser for nsswitch config and store
* result into a struct.
*
* Copyright 2006 Ian Kent <raven@themaw.net>
*
* 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, Inc., 675 Mass Ave, Cambridge MA 02139,
* USA; 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.
*
* ----------------------------------------------------------------------- */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <limits.h>
#include "automount.h"
#include "nsswitch.h"
int set_action(struct nss_action *act, char *status, char *action, int negated)
{
enum nsswitch_action a;
if (!strcasecmp(action, "continue"))
a = NSS_ACTION_CONTINUE;
else if (!strcasecmp(action, "return"))
a = NSS_ACTION_RETURN;
else
return 0;
if (!strcasecmp(status, "SUCCESS")) {
act[NSS_STATUS_SUCCESS].action = a;
act[NSS_STATUS_SUCCESS].negated = negated;
} else if (!strcasecmp(status, "NOTFOUND")) {
act[NSS_STATUS_NOTFOUND].action = a;
act[NSS_STATUS_NOTFOUND].negated = negated;
} else if (!strcasecmp(status, "UNAVAIL")) {
act[NSS_STATUS_UNAVAIL].action = a;
act[NSS_STATUS_UNAVAIL].negated = negated;
} else if (!strcasecmp(status, "TRYAGAIN")) {
act[NSS_STATUS_TRYAGAIN].action = a;
act[NSS_STATUS_TRYAGAIN].negated = negated;
} else
return 0;
return 1;
}
int check_nss_result(struct nss_source *this, enum nsswitch_status result)
{
enum nsswitch_status status;
struct nss_action a;
/* Check if we have negated actions */
for (status = 0; status < NSS_STATUS_MAX; status++) {
a = this->action[status];
if (a.action == NSS_ACTION_UNKNOWN)
continue;
if (a.negated && result != status) {
if (a.action == NSS_ACTION_RETURN) {
if (result == NSS_STATUS_SUCCESS)
return 1;
else
return 0;
}
}
}
a = this->action[result];
/* Check if we have other actions for this status */
switch (result) {
case NSS_STATUS_SUCCESS:
if (a.action == NSS_ACTION_CONTINUE)
break;
return 1;
case NSS_STATUS_NOTFOUND:
case NSS_STATUS_UNAVAIL:
case NSS_STATUS_TRYAGAIN:
if (a.action == NSS_ACTION_RETURN) {
return 0;
}
break;
default:
break;
}
return -1;
}
struct nss_source *add_source(struct list_head *head, char *source)
{
struct nss_source *s;
char *tmp;
enum nsswitch_status status;
s = malloc(sizeof(struct nss_source));
if (!s)
return NULL;
memset(s, 0, sizeof(struct nss_source));
INIT_LIST_HEAD(&s->list);
tmp = strdup(source);
if (!tmp) {
free(s);
return NULL;
}
s->source = tmp;
for (status = 0; status < NSS_STATUS_MAX; status++)
s->action[status].action = NSS_ACTION_UNKNOWN;
list_add_tail(&s->list, head);
return s;
}
int free_sources(struct list_head *list)
{
struct nss_source *this;
struct list_head *head, *next;
if (list_empty(list))
return 0;
head = list;
next = list->next;
while (next != head) {
this = list_entry(next, struct nss_source, list);
next = next->next;
list_del(&this->list);
if (this->source)
free(this->source);
free(this);
}
return 1;
}
/*
int main(void)
{
struct nss_source *this;
struct list_head list;
struct list_head *head, *next;
int status;
status = nsswitch_parse(&list);
if (status) {
printf("error exit from nss_parse\n");
free_sources(&list);
exit(1);
}
head = &list;
next = head->next;
while (next != head) {
this = list_entry(next, struct nss_source, list);
next = next->next;
printf("list->source = %s", this->source);
for (status = 0; status < NSS_STATUS_MAX; status++) {
if (this->action[status].action != NSS_ACTION_UNKNOWN)
printf(" .");
}
printf("\n");
}
free_sources(&list);
exit(0);
}
*/
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