--- /dev/null
+/*
+ * $Id: config.c,v 1.1 2002/01/22 16:03:02 dfs Exp $
+ *
+ * Copyright (C) 1995,1996,1997 Lars Fenneberg
+ *
+ * Copyright 1992 Livingston Enterprises, Inc.
+ *
+ * Copyright 1992,1993, 1994,1995 The Regents of the University of Michigan
+ * and Merit Network, Inc. All Rights Reserved
+ *
+ * See the file COPYRIGHT for the respective terms and conditions.
+ * If the file is missing contact me at lf@elemental.net
+ * and I'll send you a copy.
+ *
+ */
+
+#include <config.h>
+#include <includes.h>
+#include <radiusclient.h>
+#include <options.h>
+
+static int test_config(char *);
+
+/*
+ * Function: find_option
+ *
+ * Purpose: find an option in the option list
+ *
+ * Returns: pointer to option on success, NULL otherwise
+ */
+
+static OPTION *find_option(char *optname, unsigned int type)
+{
+ int i;
+
+ /* there're so few options that a binary search seems not necessary */
+ for (i = 0; i < num_options; i++) {
+ if (!strcmp(config_options[i].name, optname) &&
+ (config_options[i].type & type))
+ return &config_options[i];
+ }
+
+ return NULL;
+}
+
+/*
+ * Function: set_option_...
+ *
+ * Purpose: set a specific option doing type conversions
+ *
+ * Returns: 0 on success, -1 on failure
+ */
+
+static int set_option_str(char *filename, int line, OPTION *option, char *p)
+{
+ if (p)
+ option->val = (void *) strdup(p);
+ else
+ option->val = NULL;
+
+ return 0;
+}
+
+static int set_option_int(char *filename, int line, OPTION *option, char *p)
+{
+ int *iptr;
+
+ if (p == NULL) {
+ rc_log(LOG_ERR, "%s: line %d: bogus option value", filename, line);
+ return (-1);
+ }
+
+ if ((iptr = (int *) malloc(sizeof(iptr))) == NULL) {
+ rc_log(LOG_CRIT, "read_config: out of memory");
+ return (-1);
+ }
+
+ *iptr = atoi(p);
+ option->val = (void *) iptr;
+
+ return 0;
+}
+
+static int set_option_srv(char *filename, int line, OPTION *option, char *p)
+{
+ SERVER *serv;
+ char *q;
+ struct servent *svp;
+ int i;
+
+ if (p == NULL) {
+ rc_log(LOG_ERR, "%s: line %d: bogus option value", filename, line);
+ return (-1);
+ }
+
+ serv = (SERVER *) option->val;
+
+ for (i = 0; i < serv->max; i++) {
+ free(serv->name[i]);
+ }
+ serv->max = 0;
+
+ while ((p = strtok(p, ", \t")) != NULL) {
+
+ if ((q = strchr(p,':')) != NULL) {
+ *q = '\0';
+ q++;
+ serv->port[serv->max] = atoi(q);
+ } else {
+ if (!strcmp(option->name,"authserver"))
+ if ((svp = getservbyname ("radius", "udp")) == NULL)
+ serv->port[serv->max] = PW_AUTH_UDP_PORT;
+ else
+ serv->port[serv->max] = ntohs ((unsigned int) svp->s_port);
+ else if (!strcmp(option->name, "acctserver"))
+ if ((svp = getservbyname ("radacct", "udp")) == NULL)
+ serv->port[serv->max] = PW_ACCT_UDP_PORT;
+ else
+ serv->port[serv->max] = ntohs ((unsigned int) svp->s_port);
+ else {
+ rc_log(LOG_ERR, "%s: line %d: no default port for %s", filename, line, option->name);
+ return (-1);
+ }
+ }
+
+ serv->name[serv->max++] = strdup(p);
+
+ p = NULL;
+ }
+
+ return 0;
+}
+
+static int set_option_auo(char *filename, int line, OPTION *option, char *p)
+{
+ int *iptr;
+
+ if (p == NULL) {
+ rc_log(LOG_WARNING, "%s: line %d: bogus option value", filename, line);
+ return (-1);
+ }
+
+ if ((iptr = (int *) malloc(sizeof(iptr))) == NULL) {
+ rc_log(LOG_CRIT, "read_config: out of memory");
+ return (-1);
+ }
+
+ *iptr = 0;
+ p = strtok(p, ", \t");
+
+ if (!strncmp(p, "local", 5))
+ *iptr = AUTH_LOCAL_FST;
+ else if (!strncmp(p, "radius", 6))
+ *iptr = AUTH_RADIUS_FST;
+ else {
+ rc_log(LOG_ERR,"%s: auth_order: unknown keyword: %s", filename, p);
+ return (-1);
+ }
+
+ p = strtok(NULL, ", \t");
+
+ if (p && (*p != '\0')) {
+ if ((*iptr & AUTH_RADIUS_FST) && !strcmp(p, "local"))
+ *iptr = (*iptr) | AUTH_LOCAL_SND;
+ else if ((*iptr & AUTH_LOCAL_FST) && !strcmp(p, "radius"))
+ *iptr = (*iptr) | AUTH_RADIUS_SND;
+ else {
+ rc_log(LOG_ERR,"%s: auth_order: unknown or unexpected keyword: %s", filename, p);
+ return (-1);
+ }
+ }
+
+ option->val = (void *) iptr;
+
+ return 0;
+}
+
+
+/*
+ * Function: rc_read_config
+ *
+ * Purpose: read the global config file
+ *
+ * Returns: 0 on success, -1 when failure
+ */
+
+int rc_read_config(char *filename)
+{
+ FILE *configfd;
+ char buffer[512], *p;
+ OPTION *option;
+ int line, pos;
+
+ if ((configfd = fopen(filename,"r")) == NULL)
+ {
+ rc_log(LOG_ERR,"rc_read_config: can't open %s: %s", filename, strerror(errno));
+ return (-1);
+ }
+
+ line = 0;
+ while ((fgets(buffer, sizeof(buffer), configfd) != NULL))
+ {
+ line++;
+ p = buffer;
+
+ if ((*p == '\n') || (*p == '#') || (*p == '\0'))
+ continue;
+
+ p[strlen(p)-1] = '\0';
+
+
+ if ((pos = strcspn(p, "\t ")) == 0) {
+ rc_log(LOG_ERR, "%s: line %d: bogus format: %s", filename, line, p);
+ return (-1);
+ }
+
+ p[pos] = '\0';
+
+ if ((option = find_option(p, OT_ANY)) == NULL) {
+ rc_log(LOG_ERR, "%s: line %d: unrecognized keyword: %s", filename, line, p);
+ return (-1);
+ }
+
+ if (option->status != ST_UNDEF) {
+ rc_log(LOG_ERR, "%s: line %d: duplicate option line: %s", filename, line, p);
+ return (-1);
+ }
+
+ p += pos+1;
+ while (isspace(*p))
+ p++;
+
+ switch (option->type) {
+ case OT_STR:
+ if (set_option_str(filename, line, option, p) < 0)
+ return (-1);
+ break;
+ case OT_INT:
+ if (set_option_int(filename, line, option, p) < 0)
+ return (-1);
+ break;
+ case OT_SRV:
+ if (set_option_srv(filename, line, option, p) < 0)
+ return (-1);
+ break;
+ case OT_AUO:
+ if (set_option_auo(filename, line, option, p) < 0)
+ return (-1);
+ break;
+ default:
+ rc_log(LOG_CRIT, "rc_read_config: impossible case branch!");
+ abort();
+ }
+ }
+ fclose(configfd);
+
+ return test_config(filename);
+}
+
+/*
+ * Function: rc_conf_str, rc_conf_int, rc_conf_src
+ *
+ * Purpose: get the value of a config option
+ *
+ * Returns: config option value
+ */
+
+char *rc_conf_str(char *optname)
+{
+ OPTION *option;
+
+ option = find_option(optname, OT_STR);
+
+ if (option != NULL) {
+ return (char *)option->val;
+ } else {
+ rc_log(LOG_CRIT, "rc_conf_str: unkown config option requested: %s", optname);
+ abort();
+ }
+}
+
+int rc_conf_int(char *optname)
+{
+ OPTION *option;
+
+ option = find_option(optname, OT_INT|OT_AUO);
+
+ if (option != NULL) {
+ return *((int *)option->val);
+ } else {
+ rc_log(LOG_CRIT, "rc_conf_int: unkown config option requested: %s", optname);
+ abort();
+ }
+}
+
+SERVER *rc_conf_srv(char *optname)
+{
+ OPTION *option;
+
+ option = find_option(optname, OT_SRV);
+
+ if (option != NULL) {
+ return (SERVER *)option->val;
+ } else {
+ rc_log(LOG_CRIT, "rc_conf_srv: unkown config option requested: %s", optname);
+ abort();
+ }
+}
+
+/*
+ * Function: test_config
+ *
+ * Purpose: test the configuration the user supplied
+ *
+ * Returns: 0 on success, -1 when failure
+ */
+
+static int test_config(char *filename)
+{
+#if 0
+ struct stat st;
+ char *file;
+#endif
+
+ if (!(rc_conf_srv("authserver")->max))
+ {
+ rc_log(LOG_ERR,"%s: no authserver specified", filename);
+ return (-1);
+ }
+ if (!(rc_conf_srv("acctserver")->max))
+ {
+ rc_log(LOG_ERR,"%s: no acctserver specified", filename);
+ return (-1);
+ }
+ if (!rc_conf_str("servers"))
+ {
+ rc_log(LOG_ERR,"%s: no servers file specified", filename);
+ return (-1);
+ }
+ if (!rc_conf_str("dictionary"))
+ {
+ rc_log(LOG_ERR,"%s: no dictionary specified", filename);
+ return (-1);
+ }
+
+ if (rc_conf_int("radius_timeout") <= 0)
+ {
+ rc_log(LOG_ERR,"%s: radius_timeout <= 0 is illegal", filename);
+ return (-1);
+ }
+ if (rc_conf_int("radius_retries") <= 0)
+ {
+ rc_log(LOG_ERR,"%s: radius_retries <= 0 is illegal", filename);
+ return (-1);
+ }
+
+#if 0
+ file = rc_conf_str("login_local");
+ if (stat(file, &st) == 0)
+ {
+ if (!S_ISREG(st.st_mode)) {
+ rc_log(LOG_ERR,"%s: not a regular file: %s", filename, file);
+ return (-1);
+ }
+ } else {
+ rc_log(LOG_ERR,"%s: file not found: %s", filename, file);
+ return (-1);
+ }
+ file = rc_conf_str("login_radius");
+ if (stat(file, &st) == 0)
+ {
+ if (!S_ISREG(st.st_mode)) {
+ rc_log(LOG_ERR,"%s: not a regular file: %s", filename, file);
+ return (-1);
+ }
+ } else {
+ rc_log(LOG_ERR,"%s: file not found: %s", filename, file);
+ return (-1);
+ }
+#endif
+
+ if (rc_conf_int("login_tries") <= 0)
+ {
+ rc_log(LOG_ERR,"%s: login_tries <= 0 is illegal", filename);
+ return (-1);
+ }
+ if (rc_conf_str("seqfile") == NULL)
+ {
+ rc_log(LOG_ERR,"%s: seqfile not specified", filename);
+ return (-1);
+ }
+ if (rc_conf_int("login_timeout") <= 0)
+ {
+ rc_log(LOG_ERR,"%s: login_timeout <= 0 is illegal", filename);
+ return (-1);
+ }
+ if (rc_conf_str("mapfile") == NULL)
+ {
+ rc_log(LOG_ERR,"%s: mapfile not specified", filename);
+ return (-1);
+ }
+ if (rc_conf_str("nologin") == NULL)
+ {
+ rc_log(LOG_ERR,"%s: nologin not specified", filename);
+ return (-1);
+ }
+
+ return 0;
+}
+
+/*
+ * Function: rc_find_match
+ *
+ * Purpose: see if ip_addr is one of the ip addresses of hostname
+ *
+ * Returns: 0 on success, -1 when failure
+ *
+ */
+
+static int find_match (UINT4 *ip_addr, char *hostname)
+{
+ UINT4 addr;
+ char **paddr;
+ struct hostent *hp;
+
+ if (rc_good_ipaddr (hostname) == 0)
+ {
+ if (*ip_addr == ntohl(inet_addr (hostname)))
+ {
+ return (0);
+ }
+ }
+ else
+ {
+ if ((hp = gethostbyname (hostname)) == (struct hostent *) NULL)
+ {
+ return (-1);
+ }
+ for (paddr = hp->h_addr_list; *paddr; paddr++)
+ {
+ addr = ** (UINT4 **) paddr;
+ if (ntohl(addr) == *ip_addr)
+ {
+ return (0);
+ }
+ }
+ }
+ return (-1);
+}
+
+/*
+ * Function: rc_find_server
+ *
+ * Purpose: search a server in the servers file
+ *
+ * Returns: 0 on success, -1 on failure
+ *
+ */
+
+int rc_find_server (char *server_name, UINT4 *ip_addr, char *secret)
+{
+ UINT4 myipaddr = 0;
+ int len;
+ int result;
+ FILE *clientfd;
+ char *h;
+ char *s;
+ char *host2;
+ char buffer[128];
+ char hostnm[AUTH_ID_LEN + 1];
+
+ /* Get the IP address of the authentication server */
+ if ((*ip_addr = rc_get_ipaddr (server_name)) == (UINT4) 0)
+ return (-1);
+
+ if ((clientfd = fopen (rc_conf_str("servers"), "r")) == (FILE *) NULL)
+ {
+ rc_log(LOG_ERR, "rc_find_server: couldn't open file: %s: %s", strerror(errno), rc_conf_str("servers"));
+ return (-1);
+ }
+
+ if ((myipaddr = rc_own_ipaddress()) == 0)
+ return (-1);
+
+ result = 0;
+ while (fgets (buffer, sizeof (buffer), clientfd) != (char *) NULL)
+ {
+ if (*buffer == '#')
+ continue;
+
+ if ((h = strtok (buffer, " \t\n")) == NULL) /* first hostname */
+ continue;
+
+ memset (hostnm, '\0', AUTH_ID_LEN);
+ len = strlen (h);
+ if (len > AUTH_ID_LEN)
+ {
+ len = AUTH_ID_LEN;
+ }
+ strncpy (hostnm, h, (size_t) len);
+ hostnm[AUTH_ID_LEN] = '\0';
+
+ if ((s = strtok (NULL, " \t\n")) == NULL) /* and secret field */
+ continue;
+
+ memset (secret, '\0', MAX_SECRET_LENGTH);
+ len = strlen (s);
+ if (len > MAX_SECRET_LENGTH)
+ {
+ len = MAX_SECRET_LENGTH;
+ }
+ strncpy (secret, s, (size_t) len);
+ secret[MAX_SECRET_LENGTH] = '\0';
+
+ if (!strchr (hostnm, '/')) /* If single name form */
+ {
+ if (find_match (ip_addr, hostnm) == 0)
+ {
+ result++;
+ break;
+ }
+ }
+ else /* <name1>/<name2> "paired" form */
+ {
+ strtok (hostnm, "/");
+ if (find_match (&myipaddr, hostnm) == 0)
+ { /* If we're the 1st name, target is 2nd */
+ host2 = strtok (NULL, " ");
+ if (find_match (ip_addr, host2) == 0)
+ {
+ result++;
+ break;
+ }
+ }
+ else /* If we were 2nd name, target is 1st name */
+ {
+ if (find_match (ip_addr, hostnm) == 0)
+ {
+ result++;
+ break;
+ }
+ }
+ }
+ }
+ fclose (clientfd);
+ if (result == 0)
+ {
+ memset (buffer, '\0', sizeof (buffer));
+ memset (secret, '\0', sizeof (secret));
+ rc_log(LOG_ERR, "rc_find_server: couldn't find RADIUS server %s in %s",
+ server_name, rc_conf_str("servers"));
+ return (-1);
+ }
+ return 0;
+}
projects / ppp.git / blobdiff