+/*
+*
+* radrealms.c
+*
+* A pppd plugin which is stacked on top of radius.so. This plugin
+* allows selection of alternate set of servers based on the user's realm.
+*
+* Author: Ben McKeegan ben@netservers.co.uk
+*
+* Copyright (C) 2002 Netservers
+*
+* This plugin may be distributed according to the terms of the GNU
+* General Public License, version 2 or (at your option) any later version.
+*
+*/
+
+static char const RCSID[] =
+ "$Id: radrealms.c,v 1.1 2002/10/05 04:35:24 fcusack Exp $";
+
+#include "pppd.h"
+#include "radiusclient.h"
+#include <stdio.h>
+#include <string.h>
+
+char pppd_version[] = VERSION;
+
+char radrealms_config[MAXPATHLEN] = "/etc/radiusclient/realms";
+
+static option_t Options[] = {
+ { "realms-config-file", o_string, &radrealms_config },
+ { NULL }
+};
+
+extern void (*radius_pre_auth_hook)(char const *user,
+ SERVER **authserver,
+ SERVER **acctserver);
+
+static void
+lookup_realm(char const *user,
+ SERVER **authserver,
+ SERVER **acctserver)
+{
+ char *realm;
+ FILE *fd;
+ SERVER *accts, *auths, *s;
+ char buffer[512], *p;
+ int line, pos;
+
+ auths = (SERVER *) malloc(sizeof(SERVER));
+ auths->max = 0;
+ accts = (SERVER *) malloc(sizeof(SERVER));
+ accts->max = 0;
+
+ realm = strrchr(user, '@');
+
+ if (realm) {
+ info("Looking up servers for realm '%s'", realm);
+ } else {
+ info("Looking up servers for DEFAULT realm");
+ }
+ if (realm) {
+ if (*(++realm) == '\0') {
+ realm = NULL;
+ }
+ }
+
+ if ((fd = fopen(radrealms_config, "r")) == NULL) {
+ option_error("cannot open %s", radrealms_config);
+ return;
+ }
+ info("Reading %s", radrealms_config);
+
+ while ((fgets(buffer, sizeof(buffer), fd) != NULL)) {
+ line++;
+
+ if ((*buffer == '\n') || (*buffer == '#') || (*buffer == '\0'))
+ continue;
+
+ buffer[strlen(buffer)-1] = '\0';
+
+ p = strtok(buffer, "\t ");
+
+ if (p == NULL || (strcmp(p, "authserver") !=0
+ && strcmp(p, "acctserver"))) {
+ fclose(fd);
+ option_error("%s: invalid line %d: %s", radrealms_config,
+ line, buffer);
+ return;
+ }
+ info("Parsing '%s' entry:", p);
+ s = auths;
+ if (p[1] == 'c') {
+ s = accts;
+ }
+ if (s->max >= SERVER_MAX)
+ continue;
+
+ if ((p = strtok(NULL, "\t ")) == NULL) {
+ fclose(fd);
+ option_error("%s: realm name missing on line %d: %s",
+ radrealms_config, line, buffer);
+ return;
+ }
+
+ if ((realm != NULL && strcmp(p, realm) == 0) ||
+ (realm == NULL && strcmp(p, "DEFAULT") == 0) ) {
+ info(" - Matched realm %s", p);
+ if ((p = strtok(NULL, ":")) == NULL) {
+ fclose(fd);
+ option_error("%s: server address missing on line %d: %s",
+ radrealms_config, line, buffer);
+ return;
+ }
+ s->name[s->max] = strdup(p);
+ info(" - Address is '%s'",p);
+ if ((p = strtok(NULL, "\t ")) == NULL) {
+ fclose(fd);
+ option_error("%s: server port missing on line %d: %s",
+ radrealms_config, line, buffer);
+ return;
+ }
+ s->port[s->max] = atoi(p);
+ info(" - Port is '%d'", s->port[s->max]);
+ s->max++;
+ } else
+ info(" - Skipping realm '%s'", p);
+ }
+ fclose(fd);
+
+ if (accts->max)
+ *acctserver = accts;
+
+ if (auths->max)
+ *authserver = auths;
+
+ return;
+}
+
+void
+plugin_init(void)
+{
+ radius_pre_auth_hook = lookup_realm;
+
+ add_options(Options);
+ info("RADIUS Realms plugin initialized.");
+}
projects / ppp.git / commitdiff