Do not report unknown settings, when compiled with PAM.

When compiled with PAM certain settings are not used, however they are
still defined in the stock login.defs file. Thus every command reports
them as "unknown setting contact administrator".

Alternative would be to parse stock login.defs and comment out/remove
settings that are not applied, when compiled with PAM.

lib/getdef.c

@@ -49,6 +49,32 @@ struct itemdef {
 	/*@null@*/char *value;		/* value given, or NULL if no value     */
 };
 
+#define PAMDEFS					\
+	{"CHFN_AUTH", NULL},			\
+	{"CHSH_AUTH", NULL},			\
+	{"CRACKLIB_DICTPATH", NULL},		\
+	{"ENV_HZ", NULL},			\
+	{"ENVIRON_FILE", NULL},			\
+	{"ENV_TZ", NULL},			\
+	{"FAILLOG_ENAB", NULL},			\
+	{"FTMP_FILE", NULL},			\
+	{"ISSUE_FILE", NULL},			\
+	{"LASTLOG_ENAB", NULL},			\
+	{"LOGIN_STRING", NULL},			\
+	{"MAIL_CHECK_ENAB", NULL},		\
+	{"MOTD_FILE", NULL},			\
+	{"NOLOGINS_FILE", NULL},		\
+	{"OBSCURE_CHECKS_ENAB", NULL},		\
+	{"PASS_ALWAYS_WARN", NULL},		\
+	{"PASS_CHANGE_TRIES", NULL},		\
+	{"PASS_MAX_LEN", NULL},			\
+	{"PASS_MIN_LEN", NULL},			\
+	{"PORTTIME_CHECKS_ENAB", NULL},		\
+	{"QUOTAS_ENAB", NULL},			\
+	{"SU_WHEEL_ONLY", NULL},		\
+	{"ULIMIT", NULL},
+
+
 #define NUMDEFS	(sizeof(def_table)/sizeof(def_table[0]))
 static struct itemdef def_table[] = {
 	{"CHFN_RESTRICT", NULL},
@@ -102,29 +128,7 @@ static struct itemdef def_table[] = {
 	{"USERDEL_CMD", NULL},
 	{"USERGROUPS_ENAB", NULL},
 #ifndef USE_PAM
-	{"CHFN_AUTH", NULL},
-	{"CHSH_AUTH", NULL},
-	{"CRACKLIB_DICTPATH", NULL},
-	{"ENV_HZ", NULL},
-	{"ENVIRON_FILE", NULL},
-	{"ENV_TZ", NULL},
-	{"FAILLOG_ENAB", NULL},
-	{"FTMP_FILE", NULL},
-	{"ISSUE_FILE", NULL},
-	{"LASTLOG_ENAB", NULL},
-	{"LOGIN_STRING", NULL},
-	{"MAIL_CHECK_ENAB", NULL},
-	{"MOTD_FILE", NULL},
-	{"NOLOGINS_FILE", NULL},
-	{"OBSCURE_CHECKS_ENAB", NULL},
-	{"PASS_ALWAYS_WARN", NULL},
-	{"PASS_CHANGE_TRIES", NULL},
-	{"PASS_MAX_LEN", NULL},
-	{"PASS_MIN_LEN", NULL},
-	{"PORTTIME_CHECKS_ENAB", NULL},
-	{"QUOTAS_ENAB", NULL},
-	{"SU_WHEEL_ONLY", NULL},
-	{"ULIMIT", NULL},
+	PAMDEFS
 #endif
 #ifdef USE_SYSLOG
 	{"SYSLOG_SG_ENAB", NULL},
@@ -138,6 +142,13 @@ static struct itemdef def_table[] = {
 	{NULL, NULL}
 };
 
+#define NUMKNOWNDEFS	(sizeof(knowndef_table)/sizeof(knowndef_table[0]))
+static struct itemdef knowndef_table[] = {
+#ifdef USE_PAM
+	PAMDEFS
+#endif
+};
+
 #ifndef LOGINDEFS
 #define LOGINDEFS "/etc/login.defs"
 #endif
@@ -397,10 +408,17 @@ static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *name)
 	 * Item was never found.
 	 */
 
+	for (ptr = knowndef_table; NULL != ptr->name; ptr++) {
+		if (strcmp (ptr->name, name) == 0) {
+			goto out;
+		}
+	}
 	fprintf (stderr,
 	         _("configuration error - unknown item '%s' (notify administrator)\n"),
 	         name);
 	SYSLOG ((LOG_CRIT, "unknown configuration item `%s'", name));
+
+out:
 	return (struct itemdef *) NULL;
 }