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freebsd-dev/contrib/hostapd/config.c
Sam Leffler b449aee71d Add eapol_version config parameter so folks with clients that (bogusly) 
require the authenticator announce EAPOL version 1 don't have to hack
the code to get a working setup.

Discussed with Jouni; he's committed a similar set of changes to
his devel branch and I sent him these changes so I'm committing
this on the vendor branch in the expectation it will appear in
the next import.

MFC after:	1 week
2006-03-27 18:15:24 +00:00

1231 lines
30 KiB
C
Raw Blame History

/*
* Host AP (software wireless LAN access point) user space daemon for
* Host AP kernel driver / Configuration file
* Copyright (c) 2003-2005, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <netinet/in.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <grp.h>
#include "hostapd.h"
#include "driver.h"
#include "sha1.h"
#include "eap.h"
#include "radius_client.h"
#include "ieee802_1x.h" /* XXX for EAPOL_VERSION */
static struct hostapd_config *hostapd_config_defaults(void)
{
struct hostapd_config *conf;
conf = malloc(sizeof(*conf) + sizeof(struct hostapd_radius_servers));
if (conf == NULL) {
printf("Failed to allocate memory for configuration data.\n");
return NULL;
}
memset(conf, 0, sizeof(*conf) + sizeof(struct hostapd_radius_servers));
conf->radius = (struct hostapd_radius_servers *) (conf + 1);
/* set default driver based on configuration */
conf->driver = driver_lookup("default");
if (conf->driver == NULL) {
printf("No default driver registered!\n");
free(conf);
return NULL;
}
conf->wep_rekeying_period = 300;
conf->eap_reauth_period = 3600;
conf->logger_syslog_level = HOSTAPD_LEVEL_INFO;
conf->logger_stdout_level = HOSTAPD_LEVEL_INFO;
conf->logger_syslog = (unsigned int) -1;
conf->logger_stdout = (unsigned int) -1;
conf->auth_algs = HOSTAPD_AUTH_OPEN | HOSTAPD_AUTH_SHARED_KEY;
conf->eapol_version = EAPOL_VERSION; /* NB: default version */
conf->wpa_group_rekey = 600;
conf->wpa_gmk_rekey = 86400;
conf->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
conf->wpa_pairwise = WPA_CIPHER_TKIP;
conf->wpa_group = WPA_CIPHER_TKIP;
conf->radius_server_auth_port = 1812;
return conf;
}
static int hostapd_parse_ip_addr(const char *txt, struct hostapd_ip_addr *addr)
{
if (inet_aton(txt, &addr->u.v4)) {
addr->af = AF_INET;
return 0;
}
#ifdef CONFIG_IPV6
if (inet_pton(AF_INET6, txt, &addr->u.v6) > 0) {
addr->af = AF_INET6;
return 0;
}
#endif /* CONFIG_IPV6 */
return -1;
}
static int mac_comp(const void *a, const void *b)
{
return memcmp(a, b, sizeof(macaddr));
}
static int hostapd_config_read_maclist(const char *fname, macaddr **acl,
int *num)
{
FILE *f;
char buf[128], *pos;
int line = 0;
u8 addr[ETH_ALEN];
macaddr *newacl;
if (!fname)
return 0;
f = fopen(fname, "r");
if (!f) {
printf("MAC list file '%s' not found.\n", fname);
return -1;
}
while (fgets(buf, sizeof(buf), f)) {
line++;
if (buf[0] == '#')
continue;
pos = buf;
while (*pos != '\0') {
if (*pos == '\n') {
*pos = '\0';
break;
}
pos++;
}
if (buf[0] == '\0')
continue;
if (hwaddr_aton(buf, addr)) {
printf("Invalid MAC address '%s' at line %d in '%s'\n",
buf, line, fname);
fclose(f);
return -1;
}
newacl = (macaddr *) realloc(*acl, (*num + 1) * ETH_ALEN);
if (newacl == NULL) {
printf("MAC list reallocation failed\n");
fclose(f);
return -1;
}
*acl = newacl;
memcpy((*acl)[*num], addr, ETH_ALEN);
(*num)++;
}
fclose(f);
qsort(*acl, *num, sizeof(macaddr), mac_comp);
return 0;
}
static int hostapd_config_read_wpa_psk(const char *fname,
struct hostapd_config *conf)
{
FILE *f;
char buf[128], *pos;
int line = 0, ret = 0, len, ok;
u8 addr[ETH_ALEN];
struct hostapd_wpa_psk *psk;
if (!fname)
return 0;
f = fopen(fname, "r");
if (!f) {
printf("WPA PSK file '%s' not found.\n", fname);
return -1;
}
while (fgets(buf, sizeof(buf), f)) {
line++;
if (buf[0] == '#')
continue;
pos = buf;
while (*pos != '\0') {
if (*pos == '\n') {
*pos = '\0';
break;
}
pos++;
}
if (buf[0] == '\0')
continue;
if (hwaddr_aton(buf, addr)) {
printf("Invalid MAC address '%s' on line %d in '%s'\n",
buf, line, fname);
ret = -1;
break;
}
psk = malloc(sizeof(*psk));
if (psk == NULL) {
printf("WPA PSK allocation failed\n");
ret = -1;
break;
}
memset(psk, 0, sizeof(*psk));
if (memcmp(addr, "\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0)
psk->group = 1;
else
memcpy(psk->addr, addr, ETH_ALEN);
pos = buf + 17;
if (pos == '\0') {
printf("No PSK on line %d in '%s'\n", line, fname);
free(psk);
ret = -1;
break;
}
pos++;
ok = 0;
len = strlen(pos);
if (len == 64 && hexstr2bin(pos, psk->psk, PMK_LEN) == 0)
ok = 1;
else if (len >= 8 && len < 64) {
pbkdf2_sha1(pos, conf->ssid, conf->ssid_len,
4096, psk->psk, PMK_LEN);
ok = 1;
}
if (!ok) {
printf("Invalid PSK '%s' on line %d in '%s'\n",
pos, line, fname);
free(psk);
ret = -1;
break;
}
psk->next = conf->wpa_psk;
conf->wpa_psk = psk;
}
fclose(f);
return ret;
}
int hostapd_setup_wpa_psk(struct hostapd_config *conf)
{
if (conf->wpa_passphrase != NULL) {
if (conf->wpa_psk != NULL) {
printf("Warning: both WPA PSK and passphrase set. "
"Using passphrase.\n");
free(conf->wpa_psk);
}
conf->wpa_psk = malloc(sizeof(struct hostapd_wpa_psk));
if (conf->wpa_psk == NULL) {
printf("Unable to alloc space for PSK\n");
return -1;
}
wpa_hexdump_ascii(MSG_DEBUG, "SSID",
(u8 *) conf->ssid, conf->ssid_len);
wpa_hexdump_ascii(MSG_DEBUG, "PSK (ASCII passphrase)",
(u8 *) conf->wpa_passphrase,
strlen(conf->wpa_passphrase));
memset(conf->wpa_psk, 0, sizeof(struct hostapd_wpa_psk));
pbkdf2_sha1(conf->wpa_passphrase,
conf->ssid, conf->ssid_len,
4096, conf->wpa_psk->psk, PMK_LEN);
wpa_hexdump(MSG_DEBUG, "PSK (from passphrase)",
conf->wpa_psk->psk, PMK_LEN);
conf->wpa_psk->group = 1;
memset(conf->wpa_passphrase, 0, strlen(conf->wpa_passphrase));
free(conf->wpa_passphrase);
conf->wpa_passphrase = 0;
}
if (conf->wpa_psk_file) {
if (hostapd_config_read_wpa_psk(conf->wpa_psk_file, conf))
return -1;
free(conf->wpa_psk_file);
conf->wpa_psk_file = NULL;
}
return 0;
}
#ifdef EAP_SERVER
static int hostapd_config_read_eap_user(const char *fname,
struct hostapd_config *conf)
{
FILE *f;
char buf[512], *pos, *start, *pos2;
int line = 0, ret = 0, num_methods;
struct hostapd_eap_user *user, *tail = NULL;
if (!fname)
return 0;
f = fopen(fname, "r");
if (!f) {
printf("EAP user file '%s' not found.\n", fname);
return -1;
}
/* Lines: "user" METHOD,METHOD2 "password" (password optional) */
while (fgets(buf, sizeof(buf), f)) {
line++;
if (buf[0] == '#')
continue;
pos = buf;
while (*pos != '\0') {
if (*pos == '\n') {
*pos = '\0';
break;
}
pos++;
}
if (buf[0] == '\0')
continue;
user = NULL;
if (buf[0] != '"' && buf[0] != '*') {
printf("Invalid EAP identity (no \" in start) on "
"line %d in '%s'\n", line, fname);
goto failed;
}
user = malloc(sizeof(*user));
if (user == NULL) {
printf("EAP user allocation failed\n");
goto failed;
}
memset(user, 0, sizeof(*user));
user->force_version = -1;
if (buf[0] == '*') {
pos = buf;
} else {
pos = buf + 1;
start = pos;
while (*pos != '"' && *pos != '\0')
pos++;
if (*pos == '\0') {
printf("Invalid EAP identity (no \" in end) on"
" line %d in '%s'\n", line, fname);
goto failed;
}
user->identity = malloc(pos - start);
if (user->identity == NULL) {
printf("Failed to allocate memory for EAP "
"identity\n");
goto failed;
}
memcpy(user->identity, start, pos - start);
user->identity_len = pos - start;
}
pos++;
while (*pos == ' ' || *pos == '\t')
pos++;
if (*pos == '\0') {
printf("No EAP method on line %d in '%s'\n",
line, fname);
goto failed;
}
start = pos;
while (*pos != ' ' && *pos != '\t' && *pos != '\0')
pos++;
if (*pos == '\0') {
pos = NULL;
} else {
*pos = '\0';
pos++;
}
num_methods = 0;
while (*start) {
char *pos2 = strchr(start, ',');
if (pos2) {
*pos2++ = '\0';
}
user->methods[num_methods] = eap_get_type(start);
if (user->methods[num_methods] == EAP_TYPE_NONE) {
printf("Unsupported EAP type '%s' on line %d "
"in '%s'\n", start, line, fname);
goto failed;
}
num_methods++;
if (num_methods >= EAP_USER_MAX_METHODS)
break;
if (pos2 == NULL)
break;
start = pos2;
}
if (num_methods == 0) {
printf("No EAP types configured on line %d in '%s'\n",
line, fname);
goto failed;
}
if (pos == NULL)
goto done;
while (*pos == ' ' || *pos == '\t')
pos++;
if (*pos == '\0')
goto done;
if (strncmp(pos, "[ver=0]", 7) == 0) {
user->force_version = 0;
goto done;
}
if (strncmp(pos, "[ver=1]", 7) == 0) {
user->force_version = 1;
goto done;
}
if (strncmp(pos, "[2]", 3) == 0) {
user->phase2 = 1;
goto done;
}
if (*pos == '"') {
pos++;
start = pos;
while (*pos != '"' && *pos != '\0')
pos++;
if (*pos == '\0') {
printf("Invalid EAP password (no \" in end) "
"on line %d in '%s'\n", line, fname);
goto failed;
}
user->password = malloc(pos - start);
if (user->password == NULL) {
printf("Failed to allocate memory for EAP "
"password\n");
goto failed;
}
memcpy(user->password, start, pos - start);
user->password_len = pos - start;
pos++;
} else {
pos2 = pos;
while (*pos2 != '\0' && *pos2 != ' ' &&
*pos2 != '\t' && *pos2 != '#')
pos2++;
if ((pos2 - pos) & 1) {
printf("Invalid hex password on line %d in "
"'%s'\n", line, fname);
goto failed;
}
user->password = malloc((pos2 - pos) / 2);
if (user->password == NULL) {
printf("Failed to allocate memory for EAP "
"password\n");
goto failed;
}
if (hexstr2bin(pos, user->password,
(pos2 - pos) / 2) < 0) {
printf("Invalid hex password on line %d in "
"'%s'\n", line, fname);
goto failed;
}
user->password_len = (pos2 - pos) / 2;
pos = pos2;
}
while (*pos == ' ' || *pos == '\t')
pos++;
if (strncmp(pos, "[2]", 3) == 0) {
user->phase2 = 1;
}
done:
if (tail == NULL) {
tail = conf->eap_user = user;
} else {
tail->next = user;
tail = user;
}
continue;
failed:
if (user) {
free(user->identity);
free(user);
}
ret = -1;
break;
}
fclose(f);
return ret;
}
#endif /* EAP_SERVER */
static int
hostapd_config_read_radius_addr(struct hostapd_radius_server **server,
int *num_server, const char *val, int def_port,
struct hostapd_radius_server **curr_serv)
{
struct hostapd_radius_server *nserv;
int ret;
static int server_index = 1;
nserv = realloc(*server, (*num_server + 1) * sizeof(*nserv));
if (nserv == NULL)
return -1;
*server = nserv;
nserv = &nserv[*num_server];
(*num_server)++;
(*curr_serv) = nserv;
memset(nserv, 0, sizeof(*nserv));
nserv->port = def_port;
ret = hostapd_parse_ip_addr(val, &nserv->addr);
nserv->index = server_index++;
return ret;
}
static int hostapd_config_parse_key_mgmt(int line, const char *value)
{
int val = 0, last;
char *start, *end, *buf;
buf = strdup(value);
if (buf == NULL)
return -1;
start = buf;
while (start != '\0') {
while (*start == ' ' || *start == '\t')
start++;
if (*start == '\0')
break;
end = start;
while (*end != ' ' && *end != '\t' && *end != '\0')
end++;
last = *end == '\0';
*end = '\0';
if (strcmp(start, "WPA-PSK") == 0)
val |= WPA_KEY_MGMT_PSK;
else if (strcmp(start, "WPA-EAP") == 0)
val |= WPA_KEY_MGMT_IEEE8021X;
else {
printf("Line %d: invalid key_mgmt '%s'", line, start);
free(buf);
return -1;
}
if (last)
break;
start = end + 1;
}
free(buf);
if (val == 0) {
printf("Line %d: no key_mgmt values configured.", line);
return -1;
}
return val;
}
static int hostapd_config_parse_cipher(int line, const char *value)
{
int val = 0, last;
char *start, *end, *buf;
buf = strdup(value);
if (buf == NULL)
return -1;
start = buf;
while (start != '\0') {
while (*start == ' ' || *start == '\t')
start++;
if (*start == '\0')
break;
end = start;
while (*end != ' ' && *end != '\t' && *end != '\0')
end++;
last = *end == '\0';
*end = '\0';
if (strcmp(start, "CCMP") == 0)
val |= WPA_CIPHER_CCMP;
else if (strcmp(start, "TKIP") == 0)
val |= WPA_CIPHER_TKIP;
else if (strcmp(start, "WEP104") == 0)
val |= WPA_CIPHER_WEP104;
else if (strcmp(start, "WEP40") == 0)
val |= WPA_CIPHER_WEP40;
else if (strcmp(start, "NONE") == 0)
val |= WPA_CIPHER_NONE;
else {
printf("Line %d: invalid cipher '%s'.", line, start);
free(buf);
return -1;
}
if (last)
break;
start = end + 1;
}
free(buf);
if (val == 0) {
printf("Line %d: no cipher values configured.", line);
return -1;
}
return val;
}
static int hostapd_config_check(struct hostapd_config *conf)
{
if (conf->ieee802_1x && !conf->eap_server &&
!conf->radius->auth_servers) {
printf("Invalid IEEE 802.1X configuration (no EAP "
"authenticator configured).\n");
return -1;
}
if (conf->wpa && (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) &&
conf->wpa_psk == NULL && conf->wpa_passphrase == NULL &&
conf->wpa_psk_file == NULL) {
printf("WPA-PSK enabled, but PSK or passphrase is not "
"configured.\n");
return -1;
}
return 0;
}
struct hostapd_config * hostapd_config_read(const char *fname)
{
struct hostapd_config *conf;
FILE *f;
char buf[256], *pos;
int line = 0;
int errors = 0;
char *accept_mac_file = NULL, *deny_mac_file = NULL;
#ifdef EAP_SERVER
char *eap_user_file = NULL;
#endif /* EAP_SERVER */
f = fopen(fname, "r");
if (f == NULL) {
printf("Could not open configuration file '%s' for reading.\n",
fname);
return NULL;
}
conf = hostapd_config_defaults();
if (conf == NULL) {
fclose(f);
return NULL;
}
while (fgets(buf, sizeof(buf), f)) {
line++;
if (buf[0] == '#')
continue;
pos = buf;
while (*pos != '\0') {
if (*pos == '\n') {
*pos = '\0';
break;
}
pos++;
}
if (buf[0] == '\0')
continue;
pos = strchr(buf, '=');
if (pos == NULL) {
printf("Line %d: invalid line '%s'\n", line, buf);
errors++;
continue;
}
*pos = '\0';
pos++;
if (strcmp(buf, "interface") == 0) {
snprintf(conf->iface, sizeof(conf->iface), "%s", pos);
} else if (strcmp(buf, "bridge") == 0) {
snprintf(conf->bridge, sizeof(conf->bridge), "%s",
pos);
} else if (strcmp(buf, "driver") == 0) {
conf->driver = driver_lookup(pos);
if (conf->driver == NULL) {
printf("Line %d: invalid/unknown driver "
"'%s'\n", line, pos);
errors++;
}
} else if (strcmp(buf, "debug") == 0) {
conf->debug = atoi(pos);
} else if (strcmp(buf, "logger_syslog_level") == 0) {
conf->logger_syslog_level = atoi(pos);
} else if (strcmp(buf, "logger_stdout_level") == 0) {
conf->logger_stdout_level = atoi(pos);
} else if (strcmp(buf, "logger_syslog") == 0) {
conf->logger_syslog = atoi(pos);
} else if (strcmp(buf, "logger_stdout") == 0) {
conf->logger_stdout = atoi(pos);
} else if (strcmp(buf, "dump_file") == 0) {
conf->dump_log_name = strdup(pos);
} else if (strcmp(buf, "ssid") == 0) {
conf->ssid_len = strlen(pos);
if (conf->ssid_len >= HOSTAPD_SSID_LEN ||
conf->ssid_len < 1) {
printf("Line %d: invalid SSID '%s'\n", line,
pos);
errors++;
}
memcpy(conf->ssid, pos, conf->ssid_len);
conf->ssid[conf->ssid_len] = '\0';
conf->ssid_set = 1;
} else if (strcmp(buf, "macaddr_acl") == 0) {
conf->macaddr_acl = atoi(pos);
if (conf->macaddr_acl != ACCEPT_UNLESS_DENIED &&
conf->macaddr_acl != DENY_UNLESS_ACCEPTED &&
conf->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
printf("Line %d: unknown macaddr_acl %d\n",
line, conf->macaddr_acl);
}
} else if (strcmp(buf, "accept_mac_file") == 0) {
accept_mac_file = strdup(pos);
if (!accept_mac_file) {
printf("Line %d: allocation failed\n", line);
errors++;
}
} else if (strcmp(buf, "deny_mac_file") == 0) {
deny_mac_file = strdup(pos);
if (!deny_mac_file) {
printf("Line %d: allocation failed\n", line);
errors++;
}
} else if (strcmp(buf, "assoc_ap_addr") == 0) {
if (hwaddr_aton(pos, conf->assoc_ap_addr)) {
printf("Line %d: invalid MAC address '%s'\n",
line, pos);
errors++;
}
conf->assoc_ap = 1;
} else if (strcmp(buf, "ieee8021x") == 0) {
conf->ieee802_1x = atoi(pos);
#ifdef EAP_SERVER
} else if (strcmp(buf, "eap_authenticator") == 0) {
conf->eap_server = atoi(pos);
printf("Line %d: obsolete eap_authenticator used; "
"this has been renamed to eap_server\n", line);
} else if (strcmp(buf, "eap_server") == 0) {
conf->eap_server = atoi(pos);
} else if (strcmp(buf, "eap_user_file") == 0) {
free(eap_user_file);
eap_user_file = strdup(pos);
if (!eap_user_file) {
printf("Line %d: allocation failed\n", line);
errors++;
}
} else if (strcmp(buf, "ca_cert") == 0) {
free(conf->ca_cert);
conf->ca_cert = strdup(pos);
} else if (strcmp(buf, "server_cert") == 0) {
free(conf->server_cert);
conf->server_cert = strdup(pos);
} else if (strcmp(buf, "private_key") == 0) {
free(conf->private_key);
conf->private_key = strdup(pos);
} else if (strcmp(buf, "private_key_passwd") == 0) {
free(conf->private_key_passwd);
conf->private_key_passwd = strdup(pos);
} else if (strcmp(buf, "check_crl") == 0) {
conf->check_crl = atoi(pos);
#ifdef EAP_SIM
} else if (strcmp(buf, "eap_sim_db") == 0) {
free(conf->eap_sim_db);
conf->eap_sim_db = strdup(pos);
#endif /* EAP_SIM */
#endif /* EAP_SERVER */
} else if (strcmp(buf, "eap_message") == 0) {
char *term;
conf->eap_req_id_text = strdup(pos);
if (conf->eap_req_id_text == NULL) {
printf("Line %d: Failed to allocate memory "
"for eap_req_id_text\n", line);
errors++;
continue;
}
conf->eap_req_id_text_len =
strlen(conf->eap_req_id_text);
term = strstr(conf->eap_req_id_text, "\\0");
if (term) {
*term++ = '\0';
memmove(term, term + 1,
conf->eap_req_id_text_len -
(term - conf->eap_req_id_text) - 1);
conf->eap_req_id_text_len--;
}
} else if (strcmp(buf, "wep_key_len_broadcast") == 0) {
conf->default_wep_key_len = atoi(pos);
if (conf->default_wep_key_len > 13) {
printf("Line %d: invalid WEP key len %lu "
"(= %lu bits)\n", line,
(unsigned long)
conf->default_wep_key_len,
(unsigned long)
conf->default_wep_key_len * 8);
errors++;
}
} else if (strcmp(buf, "wep_key_len_unicast") == 0) {
conf->individual_wep_key_len = atoi(pos);
if (conf->individual_wep_key_len < 0 ||
conf->individual_wep_key_len > 13) {
printf("Line %d: invalid WEP key len %d "
"(= %d bits)\n", line,
conf->individual_wep_key_len,
conf->individual_wep_key_len * 8);
errors++;
}
} else if (strcmp(buf, "wep_rekey_period") == 0) {
conf->wep_rekeying_period = atoi(pos);
if (conf->wep_rekeying_period < 0) {
printf("Line %d: invalid period %d\n",
line, conf->wep_rekeying_period);
errors++;
}
} else if (strcmp(buf, "eap_reauth_period") == 0) {
conf->eap_reauth_period = atoi(pos);
if (conf->eap_reauth_period < 0) {
printf("Line %d: invalid period %d\n",
line, conf->eap_reauth_period);
errors++;
}
} else if (strcmp(buf, "eapol_key_index_workaround") == 0) {
conf->eapol_key_index_workaround = atoi(pos);
} else if (strcmp(buf, "eapol_version") == 0) {
conf->eapol_version = atoi(pos);
if (conf->eapol_version < 1 ||
conf->eapol_version > 2) {
printf("Line %d: invalid EAPOL "
"version (%d): '%s'.\n",
line, conf->eapol_version, pos);
errors++;
} else
wpa_printf(MSG_DEBUG, "eapol_version=%d",
conf->eapol_version);
#ifdef CONFIG_IAPP
} else if (strcmp(buf, "iapp_interface") == 0) {
conf->ieee802_11f = 1;
snprintf(conf->iapp_iface, sizeof(conf->iapp_iface),
"%s", pos);
#endif /* CONFIG_IAPP */
} else if (strcmp(buf, "own_ip_addr") == 0) {
if (hostapd_parse_ip_addr(pos, &conf->own_ip_addr)) {
printf("Line %d: invalid IP address '%s'\n",
line, pos);
errors++;
}
} else if (strcmp(buf, "nas_identifier") == 0) {
conf->nas_identifier = strdup(pos);
} else if (strcmp(buf, "auth_server_addr") == 0) {
if (hostapd_config_read_radius_addr(
&conf->radius->auth_servers,
&conf->radius->num_auth_servers, pos, 1812,
&conf->radius->auth_server)) {
printf("Line %d: invalid IP address '%s'\n",
line, pos);
errors++;
}
} else if (conf->radius->auth_server &&
strcmp(buf, "auth_server_port") == 0) {
conf->radius->auth_server->port = atoi(pos);
} else if (conf->radius->auth_server &&
strcmp(buf, "auth_server_shared_secret") == 0) {
int len = strlen(pos);
if (len == 0) {
/* RFC 2865, Ch. 3 */
printf("Line %d: empty shared secret is not "
"allowed.\n", line);
errors++;
}
conf->radius->auth_server->shared_secret =
(u8 *) strdup(pos);
conf->radius->auth_server->shared_secret_len = len;
} else if (strcmp(buf, "acct_server_addr") == 0) {
if (hostapd_config_read_radius_addr(
&conf->radius->acct_servers,
&conf->radius->num_acct_servers, pos, 1813,
&conf->radius->acct_server)) {
printf("Line %d: invalid IP address '%s'\n",
line, pos);
errors++;
}
} else if (conf->radius->acct_server &&
strcmp(buf, "acct_server_port") == 0) {
conf->radius->acct_server->port = atoi(pos);
} else if (conf->radius->acct_server &&
strcmp(buf, "acct_server_shared_secret") == 0) {
int len = strlen(pos);
if (len == 0) {
/* RFC 2865, Ch. 3 */
printf("Line %d: empty shared secret is not "
"allowed.\n", line);
errors++;
}
conf->radius->acct_server->shared_secret =
(u8 *) strdup(pos);
conf->radius->acct_server->shared_secret_len = len;
} else if (strcmp(buf, "radius_retry_primary_interval") == 0) {
conf->radius->retry_primary_interval = atoi(pos);
} else if (strcmp(buf, "radius_acct_interim_interval") == 0) {
conf->radius->acct_interim_interval = atoi(pos);
} else if (strcmp(buf, "auth_algs") == 0) {
conf->auth_algs = atoi(pos);
if (conf->auth_algs == 0) {
printf("Line %d: no authentication algorithms "
"allowed\n",
line);
errors++;
}
} else if (strcmp(buf, "wpa") == 0) {
conf->wpa = atoi(pos);
} else if (strcmp(buf, "wpa_group_rekey") == 0) {
conf->wpa_group_rekey = atoi(pos);
} else if (strcmp(buf, "wpa_strict_rekey") == 0) {
conf->wpa_strict_rekey = atoi(pos);
} else if (strcmp(buf, "wpa_gmk_rekey") == 0) {
conf->wpa_gmk_rekey = atoi(pos);
} else if (strcmp(buf, "wpa_passphrase") == 0) {
int len = strlen(pos);
if (len < 8 || len > 63) {
printf("Line %d: invalid WPA passphrase length"
" %d (expected 8..63)\n", line, len);
errors++;
} else {
free(conf->wpa_passphrase);
conf->wpa_passphrase = strdup(pos);
}
} else if (strcmp(buf, "wpa_psk") == 0) {
free(conf->wpa_psk);
conf->wpa_psk = malloc(sizeof(struct hostapd_wpa_psk));
if (conf->wpa_psk) {
memset(conf->wpa_psk, 0,
sizeof(struct hostapd_wpa_psk));
}
if (conf->wpa_psk == NULL)
errors++;
else if (hexstr2bin(pos, conf->wpa_psk->psk, PMK_LEN)
|| pos[PMK_LEN * 2] != '\0') {
printf("Line %d: Invalid PSK '%s'.\n", line,
pos);
errors++;
} else {
conf->wpa_psk->group = 1;
}
} else if (strcmp(buf, "wpa_psk_file") == 0) {
free(conf->wpa_psk_file);
conf->wpa_psk_file = strdup(pos);
if (!conf->wpa_psk_file) {
printf("Line %d: allocation failed\n", line);
errors++;
}
} else if (strcmp(buf, "wpa_key_mgmt") == 0) {
conf->wpa_key_mgmt =
hostapd_config_parse_key_mgmt(line, pos);
if (conf->wpa_key_mgmt == -1)
errors++;
} else if (strcmp(buf, "wpa_pairwise") == 0) {
conf->wpa_pairwise =
hostapd_config_parse_cipher(line, pos);
if (conf->wpa_pairwise == -1 ||
conf->wpa_pairwise == 0)
errors++;
else if (conf->wpa_pairwise &
(WPA_CIPHER_NONE | WPA_CIPHER_WEP40 |
WPA_CIPHER_WEP104)) {
printf("Line %d: unsupported pairwise "
"cipher suite '%s'\n",
conf->wpa_pairwise, pos);
errors++;
} else {
if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
conf->wpa_group = WPA_CIPHER_TKIP;
else
conf->wpa_group = WPA_CIPHER_CCMP;
}
#ifdef CONFIG_RSN_PREAUTH
} else if (strcmp(buf, "rsn_preauth") == 0) {
conf->rsn_preauth = atoi(pos);
} else if (strcmp(buf, "rsn_preauth_interfaces") == 0) {
conf->rsn_preauth_interfaces = strdup(pos);
#endif /* CONFIG_RSN_PREAUTH */
} else if (strcmp(buf, "ctrl_interface") == 0) {
free(conf->ctrl_interface);
conf->ctrl_interface = strdup(pos);
} else if (strcmp(buf, "ctrl_interface_group") == 0) {
struct group *grp;
char *endp;
const char *group = pos;
grp = getgrnam(group);
if (grp) {
conf->ctrl_interface_gid = grp->gr_gid;
conf->ctrl_interface_gid_set = 1;
wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d"
" (from group name '%s')",
conf->ctrl_interface_gid, group);
continue;
}
/* Group name not found - try to parse this as gid */
conf->ctrl_interface_gid = strtol(group, &endp, 10);
if (*group == '\0' || *endp != '\0') {
wpa_printf(MSG_DEBUG, "Line %d: Invalid group "
"'%s'", line, group);
errors++;
continue;
}
conf->ctrl_interface_gid_set = 1;
wpa_printf(MSG_DEBUG, "ctrl_interface_group=%d",
conf->ctrl_interface_gid);
#ifdef RADIUS_SERVER
} else if (strcmp(buf, "radius_server_clients") == 0) {
free(conf->radius_server_clients);
conf->radius_server_clients = strdup(pos);
} else if (strcmp(buf, "radius_server_auth_port") == 0) {
conf->radius_server_auth_port = atoi(pos);
} else if (strcmp(buf, "radius_server_ipv6") == 0) {
conf->radius_server_ipv6 = atoi(pos);
#endif /* RADIUS_SERVER */
} else if (strcmp(buf, "test_socket") == 0) {
free(conf->test_socket);
conf->test_socket = strdup(pos);
} else if (strcmp(buf, "use_pae_group_addr") == 0) {
conf->use_pae_group_addr = atoi(pos);
} else {
printf("Line %d: unknown configuration item '%s'\n",
line, buf);
errors++;
}
}
fclose(f);
if (hostapd_config_read_maclist(accept_mac_file, &conf->accept_mac,
&conf->num_accept_mac))
errors++;
free(accept_mac_file);
if (hostapd_config_read_maclist(deny_mac_file, &conf->deny_mac,
&conf->num_deny_mac))
errors++;
free(deny_mac_file);
#ifdef EAP_SERVER
if (hostapd_config_read_eap_user(eap_user_file, conf))
errors++;
free(eap_user_file);
#endif /* EAP_SERVER */
conf->radius->auth_server = conf->radius->auth_servers;
conf->radius->acct_server = conf->radius->acct_servers;
if (hostapd_config_check(conf))
errors++;
if (errors) {
printf("%d errors found in configuration file '%s'\n",
errors, fname);
hostapd_config_free(conf);
conf = NULL;
}
return conf;
}
static void hostapd_config_free_radius(struct hostapd_radius_server *servers,
int num_servers)
{
int i;
for (i = 0; i < num_servers; i++) {
free(servers[i].shared_secret);
}
free(servers);
}
static void hostapd_config_free_eap_user(struct hostapd_eap_user *user)
{
free(user->identity);
free(user->password);
free(user);
}
void hostapd_config_free(struct hostapd_config *conf)
{
struct hostapd_wpa_psk *psk, *prev;
struct hostapd_eap_user *user, *prev_user;
if (conf == NULL)
return;
psk = conf->wpa_psk;
while (psk) {
prev = psk;
psk = psk->next;
free(prev);
}
free(conf->wpa_passphrase);
free(conf->wpa_psk_file);
user = conf->eap_user;
while (user) {
prev_user = user;
user = user->next;
hostapd_config_free_eap_user(prev_user);
}
free(conf->dump_log_name);
free(conf->eap_req_id_text);
free(conf->accept_mac);
free(conf->deny_mac);
free(conf->nas_identifier);
hostapd_config_free_radius(conf->radius->auth_servers,
conf->radius->num_auth_servers);
hostapd_config_free_radius(conf->radius->acct_servers,
conf->radius->num_acct_servers);
free(conf->rsn_preauth_interfaces);
free(conf->ctrl_interface);
free(conf->ca_cert);
free(conf->server_cert);
free(conf->private_key);
free(conf->private_key_passwd);
free(conf->eap_sim_db);
free(conf->radius_server_clients);
free(conf->test_socket);
free(conf);
}
/* Perform a binary search for given MAC address from a pre-sorted list.
* Returns 1 if address is in the list or 0 if not. */
int hostapd_maclist_found(macaddr *list, int num_entries, u8 *addr)
{
int start, end, middle, res;
start = 0;
end = num_entries - 1;
while (start <= end) {
middle = (start + end) / 2;
res = memcmp(list[middle], addr, ETH_ALEN);
if (res == 0)
return 1;
if (res < 0)
start = middle + 1;
else
end = middle - 1;
}
return 0;
}
const u8 * hostapd_get_psk(const struct hostapd_config *conf, const u8 *addr,
const u8 *prev_psk)
{
struct hostapd_wpa_psk *psk;
int next_ok = prev_psk == NULL;
for (psk = conf->wpa_psk; psk != NULL; psk = psk->next) {
if (next_ok &&
(psk->group || memcmp(psk->addr, addr, ETH_ALEN) == 0))
return psk->psk;
if (psk->psk == prev_psk)
next_ok = 1;
}
return NULL;
}
const struct hostapd_eap_user *
hostapd_get_eap_user(const struct hostapd_config *conf, const u8 *identity,
size_t identity_len, int phase2)
{
struct hostapd_eap_user *user = conf->eap_user;
while (user) {
if (!phase2 && user->identity == NULL) {
/* Wildcard match */
break;
}
if (user->phase2 == !!phase2 &&
user->identity_len == identity_len &&
memcmp(user->identity, identity, identity_len) == 0)
break;
user = user->next;
}
return user;
}
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