/*
* WPA Supplicant / Configuration parser and common functions
* Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "utils/uuid.h"
#include "crypto/sha1.h"
#include "rsn_supp/wpa.h"
#include "eap_peer/eap.h"
#include "p2p/p2p.h"
#include "config.h"
#if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
#define NO_CONFIG_WRITE
#endif
/*
* Structure for network configuration parsing. This data is used to implement
* a generic parser for each network block variable. The table of configuration
* variables is defined below in this file (ssid_fields[]).
*/
struct parse_data {
/* Configuration variable name */
char *name;
/* Parser function for this variable */
int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
int line, const char *value);
#ifndef NO_CONFIG_WRITE
/* Writer function (i.e., to get the variable in text format from
* internal presentation). */
char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
#endif /* NO_CONFIG_WRITE */
/* Variable specific parameters for the parser. */
void *param1, *param2, *param3, *param4;
/* 0 = this variable can be included in debug output and ctrl_iface
* 1 = this variable contains key/private data and it must not be
* included in debug output unless explicitly requested. In
* addition, this variable will not be readable through the
* ctrl_iface.
*/
int key_data;
};
static int wpa_config_parse_str(const struct parse_data *data,
struct wpa_ssid *ssid,
int line, const char *value)
{
size_t res_len, *dst_len;
char **dst, *tmp;
if (os_strcmp(value, "NULL") == 0) {
wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
data->name);
tmp = NULL;
res_len = 0;
goto set;
}
tmp = wpa_config_parse_string(value, &res_len);
if (tmp == NULL) {
wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
line, data->name,
data->key_data ? "[KEY DATA REMOVED]" : value);
return -1;
}
if (data->key_data) {
wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
(u8 *) tmp, res_len);
} else {
wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
(u8 *) tmp, res_len);
}
if (data->param3 && res_len < (size_t) data->param3) {
wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
"min_len=%ld)", line, data->name,
(unsigned long) res_len, (long) data->param3);
os_free(tmp);
return -1;
}
if (data->param4 && res_len > (size_t) data->param4) {
wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
"max_len=%ld)", line, data->name,
(unsigned long) res_len, (long) data->param4);
os_free(tmp);
return -1;
}
set:
dst = (char **) (((u8 *) ssid) + (long) data->param1);
dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
os_free(*dst);
*dst = tmp;
if (data->param2)
*dst_len = res_len;
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
{
char *buf;
buf = os_malloc(len + 3);
if (buf == NULL)
return NULL;
buf[0] = '"';
os_memcpy(buf + 1, value, len);
buf[len + 1] = '"';
buf[len + 2] = '\0';
return buf;
}
static char * wpa_config_write_string_hex(const u8 *value, size_t len)
{
char *buf;
buf = os_zalloc(2 * len + 1);
if (buf == NULL)
return NULL;
wpa_snprintf_hex(buf, 2 * len + 1, value, len);
return buf;
}
static char * wpa_config_write_string(const u8 *value, size_t len)
{
if (value == NULL)
return NULL;
if (is_hex(value, len))
return wpa_config_write_string_hex(value, len);
else
return wpa_config_write_string_ascii(value, len);
}
static char * wpa_config_write_str(const struct parse_data *data,
struct wpa_ssid *ssid)
{
size_t len;
char **src;
src = (char **) (((u8 *) ssid) + (long) data->param1);
if (*src == NULL)
return NULL;
if (data->param2)
len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
else
len = os_strlen(*src);
return wpa_config_write_string((const u8 *) *src, len);
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_int(const struct parse_data *data,
struct wpa_ssid *ssid,
int line, const char *value)
{
int val, *dst;
char *end;
dst = (int *) (((u8 *) ssid) + (long) data->param1);
val = strtol(value, &end, 0);
if (*end) {
wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
line, value);
return -1;
}
*dst = val;
wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
if (data->param3 && *dst < (long) data->param3) {
wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
"min_value=%ld)", line, data->name, *dst,
(long) data->param3);
*dst = (long) data->param3;
return -1;
}
if (data->param4 && *dst > (long) data->param4) {
wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
"max_value=%ld)", line, data->name, *dst,
(long) data->param4);
*dst = (long) data->param4;
return -1;
}
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_int(const struct parse_data *data,
struct wpa_ssid *ssid)
{
int *src, res;
char *value;
src = (int *) (((u8 *) ssid) + (long) data->param1);
value = os_malloc(20);
if (value == NULL)
return NULL;
res = os_snprintf(value, 20, "%d", *src);
if (res < 0 || res >= 20) {
os_free(value);
return NULL;
}
value[20 - 1] = '\0';
return value;
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_bssid(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
if (value[0] == '\0' || os_strcmp(value, "\"\"") == 0 ||
os_strcmp(value, "any") == 0) {
ssid->bssid_set = 0;
wpa_printf(MSG_MSGDUMP, "BSSID any");
return 0;
}
if (hwaddr_aton(value, ssid->bssid)) {
wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
line, value);
return -1;
}
ssid->bssid_set = 1;
wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_bssid(const struct parse_data *data,
struct wpa_ssid *ssid)
{
char *value;
int res;
if (!ssid->bssid_set)
return NULL;
value = os_malloc(20);
if (value == NULL)
return NULL;
res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
if (res < 0 || res >= 20) {
os_free(value);
return NULL;
}
value[20 - 1] = '\0';
return value;
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_psk(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
#ifdef CONFIG_EXT_PASSWORD
if (os_strncmp(value, "ext:", 4) == 0) {
os_free(ssid->passphrase);
ssid->passphrase = NULL;
ssid->psk_set = 0;
os_free(ssid->ext_psk);
ssid->ext_psk = os_strdup(value + 4);
if (ssid->ext_psk == NULL)
return -1;
wpa_printf(MSG_DEBUG, "PSK: External password '%s'",
ssid->ext_psk);
return 0;
}
#endif /* CONFIG_EXT_PASSWORD */
if (*value == '"') {
#ifndef CONFIG_NO_PBKDF2
const char *pos;
size_t len;
value++;
pos = os_strrchr(value, '"');
if (pos)
len = pos - value;
else
len = os_strlen(value);
if (len < 8 || len > 63) {
wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
"length %lu (expected: 8..63) '%s'.",
line, (unsigned long) len, value);
return -1;
}
wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
(u8 *) value, len);
if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
os_memcmp(ssid->passphrase, value, len) == 0)
return 0;
ssid->psk_set = 0;
os_free(ssid->passphrase);
ssid->passphrase = dup_binstr(value, len);
if (ssid->passphrase == NULL)
return -1;
return 0;
#else /* CONFIG_NO_PBKDF2 */
wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
"supported.", line);
return -1;
#endif /* CONFIG_NO_PBKDF2 */
}
if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
value[PMK_LEN * 2] != '\0') {
wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
line, value);
return -1;
}
os_free(ssid->passphrase);
ssid->passphrase = NULL;
ssid->psk_set = 1;
wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_psk(const struct parse_data *data,
struct wpa_ssid *ssid)
{
#ifdef CONFIG_EXT_PASSWORD
if (ssid->ext_psk) {
size_t len = 4 + os_strlen(ssid->ext_psk) + 1;
char *buf = os_malloc(len);
if (buf == NULL)
return NULL;
os_snprintf(buf, len, "ext:%s", ssid->ext_psk);
return buf;
}
#endif /* CONFIG_EXT_PASSWORD */
if (ssid->passphrase)
return wpa_config_write_string_ascii(
(const u8 *) ssid->passphrase,
os_strlen(ssid->passphrase));
if (ssid->psk_set)
return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
return NULL;
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_proto(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int val = 0, last, errors = 0;
char *start, *end, *buf;
buf = os_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 (os_strcmp(start, "WPA") == 0)
val |= WPA_PROTO_WPA;
else if (os_strcmp(start, "RSN") == 0 ||
os_strcmp(start, "WPA2") == 0)
val |= WPA_PROTO_RSN;
else {
wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
line, start);
errors++;
}
if (last)
break;
start = end + 1;
}
os_free(buf);
if (val == 0) {
wpa_printf(MSG_ERROR,
"Line %d: no proto values configured.", line);
errors++;
}
wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
ssid->proto = val;
return errors ? -1 : 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_proto(const struct parse_data *data,
struct wpa_ssid *ssid)
{
int first = 1, ret;
char *buf, *pos, *end;
pos = buf = os_zalloc(10);
if (buf == NULL)
return NULL;
end = buf + 10;
if (ssid->proto & WPA_PROTO_WPA) {
ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
if (ret < 0 || ret >= end - pos)
return buf;
pos += ret;
first = 0;
}
if (ssid->proto & WPA_PROTO_RSN) {
ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
if (ret < 0 || ret >= end - pos)
return buf;
pos += ret;
first = 0;
}
return buf;
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_key_mgmt(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int val = 0, last, errors = 0;
char *start, *end, *buf;
buf = os_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 (os_strcmp(start, "WPA-PSK") == 0)
val |= WPA_KEY_MGMT_PSK;
else if (os_strcmp(start, "WPA-EAP") == 0)
val |= WPA_KEY_MGMT_IEEE8021X;
else if (os_strcmp(start, "IEEE8021X") == 0)
val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
else if (os_strcmp(start, "NONE") == 0)
val |= WPA_KEY_MGMT_NONE;
else if (os_strcmp(start, "WPA-NONE") == 0)
val |= WPA_KEY_MGMT_WPA_NONE;
#ifdef CONFIG_IEEE80211R
else if (os_strcmp(start, "FT-PSK") == 0)
val |= WPA_KEY_MGMT_FT_PSK;
else if (os_strcmp(start, "FT-EAP") == 0)
val |= WPA_KEY_MGMT_FT_IEEE8021X;
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
val |= WPA_KEY_MGMT_PSK_SHA256;
else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_WPS
else if (os_strcmp(start, "WPS") == 0)
val |= WPA_KEY_MGMT_WPS;
#endif /* CONFIG_WPS */
#ifdef CONFIG_SAE
else if (os_strcmp(start, "SAE") == 0)
val |= WPA_KEY_MGMT_SAE;
else if (os_strcmp(start, "FT-SAE") == 0)
val |= WPA_KEY_MGMT_FT_SAE;
#endif /* CONFIG_SAE */
else {
wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
line, start);
errors++;
}
if (last)
break;
start = end + 1;
}
os_free(buf);
if (val == 0) {
wpa_printf(MSG_ERROR,
"Line %d: no key_mgmt values configured.", line);
errors++;
}
wpa_printf(MSG_MSGDUMP, "key_mgmt: 0x%x", val);
ssid->key_mgmt = val;
return errors ? -1 : 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_key_mgmt(const struct parse_data *data,
struct wpa_ssid *ssid)
{
char *buf, *pos, *end;
int ret;
pos = buf = os_zalloc(50);
if (buf == NULL)
return NULL;
end = buf + 50;
if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) {
ret = os_snprintf(pos, end - pos, "%sWPA-PSK",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
ret = os_snprintf(pos, end - pos, "%sWPA-EAP",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
ret = os_snprintf(pos, end - pos, "%sIEEE8021X",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
if (ssid->key_mgmt & WPA_KEY_MGMT_NONE) {
ret = os_snprintf(pos, end - pos, "%sNONE",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
if (ssid->key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
ret = os_snprintf(pos, end - pos, "%sWPA-NONE",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
#ifdef CONFIG_IEEE80211R
if (ssid->key_mgmt & WPA_KEY_MGMT_FT_PSK)
pos += os_snprintf(pos, end - pos, "%sFT-PSK",
pos == buf ? "" : " ");
if (ssid->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
pos += os_snprintf(pos, end - pos, "%sFT-EAP",
pos == buf ? "" : " ");
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
if (ssid->key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
pos += os_snprintf(pos, end - pos, "%sWPA-PSK-SHA256",
pos == buf ? "" : " ");
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
pos += os_snprintf(pos, end - pos, "%sWPA-EAP-SHA256",
pos == buf ? "" : " ");
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_WPS
if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
pos += os_snprintf(pos, end - pos, "%sWPS",
pos == buf ? "" : " ");
#endif /* CONFIG_WPS */
return buf;
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_cipher(int line, const char *value)
{
int val = wpa_parse_cipher(value);
if (val < 0) {
wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
line, value);
return -1;
}
if (val == 0) {
wpa_printf(MSG_ERROR, "Line %d: no cipher values configured.",
line);
return -1;
}
return val;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_cipher(int cipher)
{
char *buf = os_zalloc(50);
if (buf == NULL)
return NULL;
if (wpa_write_ciphers(buf, buf + 50, cipher, " ") < 0) {
os_free(buf);
return NULL;
}
return buf;
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_pairwise(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int val;
val = wpa_config_parse_cipher(line, value);
if (val == -1)
return -1;
if (val & ~WPA_ALLOWED_PAIRWISE_CIPHERS) {
wpa_printf(MSG_ERROR, "Line %d: not allowed pairwise cipher "
"(0x%x).", line, val);
return -1;
}
wpa_printf(MSG_MSGDUMP, "pairwise: 0x%x", val);
ssid->pairwise_cipher = val;
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_pairwise(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_cipher(ssid->pairwise_cipher);
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_group(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int val;
val = wpa_config_parse_cipher(line, value);
if (val == -1)
return -1;
if (val & ~WPA_ALLOWED_GROUP_CIPHERS) {
wpa_printf(MSG_ERROR, "Line %d: not allowed group cipher "
"(0x%x).", line, val);
return -1;
}
wpa_printf(MSG_MSGDUMP, "group: 0x%x", val);
ssid->group_cipher = val;
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_group(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_cipher(ssid->group_cipher);
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_auth_alg(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int val = 0, last, errors = 0;
char *start, *end, *buf;
buf = os_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 (os_strcmp(start, "OPEN") == 0)
val |= WPA_AUTH_ALG_OPEN;
else if (os_strcmp(start, "SHARED") == 0)
val |= WPA_AUTH_ALG_SHARED;
else if (os_strcmp(start, "LEAP") == 0)
val |= WPA_AUTH_ALG_LEAP;
else {
wpa_printf(MSG_ERROR, "Line %d: invalid auth_alg '%s'",
line, start);
errors++;
}
if (last)
break;
start = end + 1;
}
os_free(buf);
if (val == 0) {
wpa_printf(MSG_ERROR,
"Line %d: no auth_alg values configured.", line);
errors++;
}
wpa_printf(MSG_MSGDUMP, "auth_alg: 0x%x", val);
ssid->auth_alg = val;
return errors ? -1 : 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_auth_alg(const struct parse_data *data,
struct wpa_ssid *ssid)
{
char *buf, *pos, *end;
int ret;
pos = buf = os_zalloc(30);
if (buf == NULL)
return NULL;
end = buf + 30;
if (ssid->auth_alg & WPA_AUTH_ALG_OPEN) {
ret = os_snprintf(pos, end - pos, "%sOPEN",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
if (ssid->auth_alg & WPA_AUTH_ALG_SHARED) {
ret = os_snprintf(pos, end - pos, "%sSHARED",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
if (ssid->auth_alg & WPA_AUTH_ALG_LEAP) {
ret = os_snprintf(pos, end - pos, "%sLEAP",
pos == buf ? "" : " ");
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
return buf;
}
#endif /* NO_CONFIG_WRITE */
static int * wpa_config_parse_int_array(const char *value)
{
int *freqs;
size_t used, len;
const char *pos;
used = 0;
len = 10;
freqs = os_calloc(len + 1, sizeof(int));
if (freqs == NULL)
return NULL;
pos = value;
while (pos) {
while (*pos == ' ')
pos++;
if (used == len) {
int *n;
size_t i;
n = os_realloc_array(freqs, len * 2 + 1, sizeof(int));
if (n == NULL) {
os_free(freqs);
return NULL;
}
for (i = len; i <= len * 2; i++)
n[i] = 0;
freqs = n;
len *= 2;
}
freqs[used] = atoi(pos);
if (freqs[used] == 0)
break;
used++;
pos = os_strchr(pos + 1, ' ');
}
return freqs;
}
static int wpa_config_parse_scan_freq(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int *freqs;
freqs = wpa_config_parse_int_array(value);
if (freqs == NULL)
return -1;
os_free(ssid->scan_freq);
ssid->scan_freq = freqs;
return 0;
}
static int wpa_config_parse_freq_list(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int *freqs;
freqs = wpa_config_parse_int_array(value);
if (freqs == NULL)
return -1;
os_free(ssid->freq_list);
ssid->freq_list = freqs;
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_freqs(const struct parse_data *data,
const int *freqs)
{
char *buf, *pos, *end;
int i, ret;
size_t count;
if (freqs == NULL)
return NULL;
count = 0;
for (i = 0; freqs[i]; i++)
count++;
pos = buf = os_zalloc(10 * count + 1);
if (buf == NULL)
return NULL;
end = buf + 10 * count + 1;
for (i = 0; freqs[i]; i++) {
ret = os_snprintf(pos, end - pos, "%s%u",
i == 0 ? "" : " ", freqs[i]);
if (ret < 0 || ret >= end - pos) {
end[-1] = '\0';
return buf;
}
pos += ret;
}
return buf;
}
static char * wpa_config_write_scan_freq(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_freqs(data, ssid->scan_freq);
}
static char * wpa_config_write_freq_list(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_freqs(data, ssid->freq_list);
}
#endif /* NO_CONFIG_WRITE */
#ifdef IEEE8021X_EAPOL
static int wpa_config_parse_eap(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
int last, errors = 0;
char *start, *end, *buf;
struct eap_method_type *methods = NULL, *tmp;
size_t num_methods = 0;
buf = os_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';
tmp = methods;
methods = os_realloc_array(methods, num_methods + 1,
sizeof(*methods));
if (methods == NULL) {
os_free(tmp);
os_free(buf);
return -1;
}
methods[num_methods].method = eap_peer_get_type(
start, &methods[num_methods].vendor);
if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
methods[num_methods].method == EAP_TYPE_NONE) {
wpa_printf(MSG_ERROR, "Line %d: unknown EAP method "
"'%s'", line, start);
wpa_printf(MSG_ERROR, "You may need to add support for"
" this EAP method during wpa_supplicant\n"
"build time configuration.\n"
"See README for more information.");
errors++;
} else if (methods[num_methods].vendor == EAP_VENDOR_IETF &&
methods[num_methods].method == EAP_TYPE_LEAP)
ssid->leap++;
else
ssid->non_leap++;
num_methods++;
if (last)
break;
start = end + 1;
}
os_free(buf);
tmp = methods;
methods = os_realloc_array(methods, num_methods + 1, sizeof(*methods));
if (methods == NULL) {
os_free(tmp);
return -1;
}
methods[num_methods].vendor = EAP_VENDOR_IETF;
methods[num_methods].method = EAP_TYPE_NONE;
num_methods++;
wpa_hexdump(MSG_MSGDUMP, "eap methods",
(u8 *) methods, num_methods * sizeof(*methods));
os_free(ssid->eap.eap_methods);
ssid->eap.eap_methods = methods;
return errors ? -1 : 0;
}
static char * wpa_config_write_eap(const struct parse_data *data,
struct wpa_ssid *ssid)
{
int i, ret;
char *buf, *pos, *end;
const struct eap_method_type *eap_methods = ssid->eap.eap_methods;
const char *name;
if (eap_methods == NULL)
return NULL;
pos = buf = os_zalloc(100);
if (buf == NULL)
return NULL;
end = buf + 100;
for (i = 0; eap_methods[i].vendor != EAP_VENDOR_IETF ||
eap_methods[i].method != EAP_TYPE_NONE; i++) {
name = eap_get_name(eap_methods[i].vendor,
eap_methods[i].method);
if (name) {
ret = os_snprintf(pos, end - pos, "%s%s",
pos == buf ? "" : " ", name);
if (ret < 0 || ret >= end - pos)
break;
pos += ret;
}
}
end[-1] = '\0';
return buf;
}
static int wpa_config_parse_password(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
u8 *hash;
if (os_strcmp(value, "NULL") == 0) {
wpa_printf(MSG_DEBUG, "Unset configuration string 'password'");
os_free(ssid->eap.password);
ssid->eap.password = NULL;
ssid->eap.password_len = 0;
return 0;
}
#ifdef CONFIG_EXT_PASSWORD
if (os_strncmp(value, "ext:", 4) == 0) {
char *name = os_strdup(value + 4);
if (name == NULL)
return -1;
os_free(ssid->eap.password);
ssid->eap.password = (u8 *) name;
ssid->eap.password_len = os_strlen(name);
ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
ssid->eap.flags |= EAP_CONFIG_FLAGS_EXT_PASSWORD;
return 0;
}
#endif /* CONFIG_EXT_PASSWORD */
if (os_strncmp(value, "hash:", 5) != 0) {
char *tmp;
size_t res_len;
tmp = wpa_config_parse_string(value, &res_len);
if (tmp == NULL) {
wpa_printf(MSG_ERROR, "Line %d: failed to parse "
"password.", line);
return -1;
}
wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
(u8 *) tmp, res_len);
os_free(ssid->eap.password);
ssid->eap.password = (u8 *) tmp;
ssid->eap.password_len = res_len;
ssid->eap.flags &= ~EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
return 0;
}
/* NtPasswordHash: hash:<32 hex digits> */
if (os_strlen(value + 5) != 2 * 16) {
wpa_printf(MSG_ERROR, "Line %d: Invalid password hash length "
"(expected 32 hex digits)", line);
return -1;
}
hash = os_malloc(16);
if (hash == NULL)
return -1;
if (hexstr2bin(value + 5, hash, 16)) {
os_free(hash);
wpa_printf(MSG_ERROR, "Line %d: Invalid password hash", line);
return -1;
}
wpa_hexdump_key(MSG_MSGDUMP, data->name, hash, 16);
os_free(ssid->eap.password);
ssid->eap.password = hash;
ssid->eap.password_len = 16;
ssid->eap.flags |= EAP_CONFIG_FLAGS_PASSWORD_NTHASH;
ssid->eap.flags &= ~EAP_CONFIG_FLAGS_EXT_PASSWORD;
return 0;
}
static char * wpa_config_write_password(const struct parse_data *data,
struct wpa_ssid *ssid)
{
char *buf;
if (ssid->eap.password == NULL)
return NULL;
#ifdef CONFIG_EXT_PASSWORD
if (ssid->eap.flags & EAP_CONFIG_FLAGS_EXT_PASSWORD) {
buf = os_zalloc(4 + ssid->eap.password_len + 1);
if (buf == NULL)
return NULL;
os_memcpy(buf, "ext:", 4);
os_memcpy(buf + 4, ssid->eap.password, ssid->eap.password_len);
return buf;
}
#endif /* CONFIG_EXT_PASSWORD */
if (!(ssid->eap.flags & EAP_CONFIG_FLAGS_PASSWORD_NTHASH)) {
return wpa_config_write_string(
ssid->eap.password, ssid->eap.password_len);
}
buf = os_malloc(5 + 32 + 1);
if (buf == NULL)
return NULL;
os_memcpy(buf, "hash:", 5);
wpa_snprintf_hex(buf + 5, 32 + 1, ssid->eap.password, 16);
return buf;
}
#endif /* IEEE8021X_EAPOL */
static int wpa_config_parse_wep_key(u8 *key, size_t *len, int line,
const char *value, int idx)
{
char *buf, title[20];
int res;
buf = wpa_config_parse_string(value, len);
if (buf == NULL) {
wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key %d '%s'.",
line, idx, value);
return -1;
}
if (*len > MAX_WEP_KEY_LEN) {
wpa_printf(MSG_ERROR, "Line %d: Too long WEP key %d '%s'.",
line, idx, value);
os_free(buf);
return -1;
}
if (*len && *len != 5 && *len != 13 && *len != 16) {
wpa_printf(MSG_ERROR, "Line %d: Invalid WEP key length %u - "
"this network block will be ignored",
line, (unsigned int) *len);
}
os_memcpy(key, buf, *len);
os_free(buf);
res = os_snprintf(title, sizeof(title), "wep_key%d", idx);
if (res >= 0 && (size_t) res < sizeof(title))
wpa_hexdump_key(MSG_MSGDUMP, title, key, *len);
return 0;
}
static int wpa_config_parse_wep_key0(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
return wpa_config_parse_wep_key(ssid->wep_key[0],
&ssid->wep_key_len[0], line,
value, 0);
}
static int wpa_config_parse_wep_key1(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
return wpa_config_parse_wep_key(ssid->wep_key[1],
&ssid->wep_key_len[1], line,
value, 1);
}
static int wpa_config_parse_wep_key2(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
return wpa_config_parse_wep_key(ssid->wep_key[2],
&ssid->wep_key_len[2], line,
value, 2);
}
static int wpa_config_parse_wep_key3(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
return wpa_config_parse_wep_key(ssid->wep_key[3],
&ssid->wep_key_len[3], line,
value, 3);
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_wep_key(struct wpa_ssid *ssid, int idx)
{
if (ssid->wep_key_len[idx] == 0)
return NULL;
return wpa_config_write_string(ssid->wep_key[idx],
ssid->wep_key_len[idx]);
}
static char * wpa_config_write_wep_key0(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_wep_key(ssid, 0);
}
static char * wpa_config_write_wep_key1(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_wep_key(ssid, 1);
}
static char * wpa_config_write_wep_key2(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_wep_key(ssid, 2);
}
static char * wpa_config_write_wep_key3(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return wpa_config_write_wep_key(ssid, 3);
}
#endif /* NO_CONFIG_WRITE */
#ifdef CONFIG_P2P
static int wpa_config_parse_p2p_client_list(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
const char *pos;
u8 *buf, *n, addr[ETH_ALEN];
size_t count;
buf = NULL;
count = 0;
pos = value;
while (pos && *pos) {
while (*pos == ' ')
pos++;
if (hwaddr_aton(pos, addr)) {
if (count == 0) {
wpa_printf(MSG_ERROR, "Line %d: Invalid "
"p2p_client_list address '%s'.",
line, value);
os_free(buf);
return -1;
}
/* continue anyway since this could have been from a
* truncated configuration file line */
wpa_printf(MSG_INFO, "Line %d: Ignore likely "
"truncated p2p_client_list address '%s'",
line, pos);
} else {
n = os_realloc_array(buf, count + 1, ETH_ALEN);
if (n == NULL) {
os_free(buf);
return -1;
}
buf = n;
os_memmove(buf + ETH_ALEN, buf, count * ETH_ALEN);
os_memcpy(buf, addr, ETH_ALEN);
count++;
wpa_hexdump(MSG_MSGDUMP, "p2p_client_list",
addr, ETH_ALEN);
}
pos = os_strchr(pos, ' ');
}
os_free(ssid->p2p_client_list);
ssid->p2p_client_list = buf;
ssid->num_p2p_clients = count;
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_p2p_client_list(const struct parse_data *data,
struct wpa_ssid *ssid)
{
char *value, *end, *pos;
int res;
size_t i;
if (ssid->p2p_client_list == NULL || ssid->num_p2p_clients == 0)
return NULL;
value = os_malloc(20 * ssid->num_p2p_clients);
if (value == NULL)
return NULL;
pos = value;
end = value + 20 * ssid->num_p2p_clients;
for (i = ssid->num_p2p_clients; i > 0; i--) {
res = os_snprintf(pos, end - pos, MACSTR " ",
MAC2STR(ssid->p2p_client_list +
(i - 1) * ETH_ALEN));
if (res < 0 || res >= end - pos) {
os_free(value);
return NULL;
}
pos += res;
}
if (pos > value)
pos[-1] = '\0';
return value;
}
#endif /* NO_CONFIG_WRITE */
static int wpa_config_parse_psk_list(const struct parse_data *data,
struct wpa_ssid *ssid, int line,
const char *value)
{
struct psk_list_entry *p;
const char *pos;
p = os_zalloc(sizeof(*p));
if (p == NULL)
return -1;
pos = value;
if (os_strncmp(pos, "P2P-", 4) == 0) {
p->p2p = 1;
pos += 4;
}
if (hwaddr_aton(pos, p->addr)) {
wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list address '%s'",
line, pos);
os_free(p);
return -1;
}
pos += 17;
if (*pos != '-') {
wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list '%s'",
line, pos);
os_free(p);
return -1;
}
pos++;
if (hexstr2bin(pos, p->psk, PMK_LEN) || pos[PMK_LEN * 2] != '\0') {
wpa_printf(MSG_ERROR, "Line %d: Invalid psk_list PSK '%s'",
line, pos);
os_free(p);
return -1;
}
dl_list_add(&ssid->psk_list, &p->list);
return 0;
}
#ifndef NO_CONFIG_WRITE
static char * wpa_config_write_psk_list(const struct parse_data *data,
struct wpa_ssid *ssid)
{
return NULL;
}
#endif /* NO_CONFIG_WRITE */
#endif /* CONFIG_P2P */
/* Helper macros for network block parser */
#ifdef OFFSET
#undef OFFSET
#endif /* OFFSET */
/* OFFSET: Get offset of a variable within the wpa_ssid structure */
#define OFFSET(v) ((void *) &((struct wpa_ssid *) 0)->v)
/* STR: Define a string variable for an ASCII string; f = field name */
#ifdef NO_CONFIG_WRITE
#define _STR(f) #f, wpa_config_parse_str, OFFSET(f)
#define _STRe(f) #f, wpa_config_parse_str, OFFSET(eap.f)
#else /* NO_CONFIG_WRITE */
#define _STR(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(f)
#define _STRe(f) #f, wpa_config_parse_str, wpa_config_write_str, OFFSET(eap.f)
#endif /* NO_CONFIG_WRITE */
#define STR(f) _STR(f), NULL, NULL, NULL, 0
#define STRe(f) _STRe(f), NULL, NULL, NULL, 0
#define STR_KEY(f) _STR(f), NULL, NULL, NULL, 1
#define STR_KEYe(f) _STRe(f), NULL, NULL, NULL, 1
/* STR_LEN: Define a string variable with a separate variable for storing the
* data length. Unlike STR(), this can be used to store arbitrary binary data
* (i.e., even nul termination character). */
#define _STR_LEN(f) _STR(f), OFFSET(f ## _len)
#define _STR_LENe(f) _STRe(f), OFFSET(eap.f ## _len)
#define STR_LEN(f) _STR_LEN(f), NULL, NULL, 0
#define STR_LENe(f) _STR_LENe(f), NULL, NULL, 0
#define STR_LEN_KEY(f) _STR_LEN(f), NULL, NULL, 1
/* STR_RANGE: Like STR_LEN(), but with minimum and maximum allowed length
* explicitly specified. */
#define _STR_RANGE(f, min, max) _STR_LEN(f), (void *) (min), (void *) (max)
#define STR_RANGE(f, min, max) _STR_RANGE(f, min, max), 0
#define STR_RANGE_KEY(f, min, max) _STR_RANGE(f, min, max), 1
#ifdef NO_CONFIG_WRITE
#define _INT(f) #f, wpa_config_parse_int, OFFSET(f), (void *) 0
#define _INTe(f) #f, wpa_config_parse_int, OFFSET(eap.f), (void *) 0
#else /* NO_CONFIG_WRITE */
#define _INT(f) #f, wpa_config_parse_int, wpa_config_write_int, \
OFFSET(f), (void *) 0
#define _INTe(f) #f, wpa_config_parse_int, wpa_config_write_int, \
OFFSET(eap.f), (void *) 0
#endif /* NO_CONFIG_WRITE */
/* INT: Define an integer variable */
#define INT(f) _INT(f), NULL, NULL, 0
#define INTe(f) _INTe(f), NULL, NULL, 0
/* INT_RANGE: Define an integer variable with allowed value range */
#define INT_RANGE(f, min, max) _INT(f), (void *) (min), (void *) (max), 0
/* FUNC: Define a configuration variable that uses a custom function for
* parsing and writing the value. */
#ifdef NO_CONFIG_WRITE
#define _FUNC(f) #f, wpa_config_parse_ ## f, NULL, NULL, NULL, NULL
#else /* NO_CONFIG_WRITE */
#define _FUNC(f) #f, wpa_config_parse_ ## f, wpa_config_write_ ## f, \
NULL, NULL, NULL, NULL
#endif /* NO_CONFIG_WRITE */
#define FUNC(f) _FUNC(f), 0
#define FUNC_KEY(f) _FUNC(f), 1
/*
* Table of network configuration variables. This table is used to parse each
* network configuration variable, e.g., each line in wpa_supplicant.conf file
* that is inside a network block.
*
* This table is generated using the helper macros defined above and with
* generous help from the C pre-processor. The field name is stored as a string
* into .name and for STR and INT types, the offset of the target buffer within
* struct wpa_ssid is stored in .param1. .param2 (if not NULL) is similar
* offset to the field containing the length of the configuration variable.
* .param3 and .param4 can be used to mark the allowed range (length for STR
* and value for INT).
*
* For each configuration line in wpa_supplicant.conf, the parser goes through
* this table and select the entry that matches with the field name. The parser
* function (.parser) is then called to parse the actual value of the field.
*
* This kind of mechanism makes it easy to add new configuration parameters,
* since only one line needs to be added into this table and into the
* struct wpa_ssid definition if the new variable is either a string or
* integer. More complex types will need to use their own parser and writer
* functions.
*/
static const struct parse_data ssid_fields[] = {
{ STR_RANGE(ssid, 0, MAX_SSID_LEN) },
{ INT_RANGE(scan_ssid, 0, 1) },
{ FUNC(bssid) },
{ FUNC_KEY(psk) },
{ FUNC(proto) },
{ FUNC(key_mgmt) },
{ INT(bg_scan_period) },
{ FUNC(pairwise) },
{ FUNC(group) },
{ FUNC(auth_alg) },
{ FUNC(scan_freq) },
{ FUNC(freq_list) },
#ifdef IEEE8021X_EAPOL
{ FUNC(eap) },
{ STR_LENe(identity) },
{ STR_LENe(anonymous_identity) },
{ FUNC_KEY(password) },
{ STRe(ca_cert) },
{ STRe(ca_path) },
{ STRe(client_cert) },
{ STRe(private_key) },
{ STR_KEYe(private_key_passwd) },
{ STRe(dh_file) },
{ STRe(subject_match) },
{ STRe(altsubject_match) },
{ STRe(ca_cert2) },
{ STRe(ca_path2) },
{ STRe(client_cert2) },
{ STRe(private_key2) },
{ STR_KEYe(private_key2_passwd) },
{ STRe(dh_file2) },
{ STRe(subject_match2) },
{ STRe(altsubject_match2) },
{ STRe(phase1) },
{ STRe(phase2) },
{ STRe(pcsc) },
{ STR_KEYe(pin) },
{ STRe(engine_id) },
{ STRe(key_id) },
{ STRe(cert_id) },
{ STRe(ca_cert_id) },
{ STR_KEYe(pin2) },
{ STRe(engine2_id) },
{ STRe(key2_id) },
{ STRe(cert2_id) },
{ STRe(ca_cert2_id) },
{ INTe(engine) },
{ INTe(engine2) },
{ INT(eapol_flags) },
#endif /* IEEE8021X_EAPOL */
{ FUNC_KEY(wep_key0) },
{ FUNC_KEY(wep_key1) },
{ FUNC_KEY(wep_key2) },
{ FUNC_KEY(wep_key3) },
{ INT(wep_tx_keyidx) },
{ INT(priority) },
#ifdef IEEE8021X_EAPOL
{ INT(eap_workaround) },
{ STRe(pac_file) },
{ INTe(fragment_size) },
{ INTe(ocsp) },
#endif /* IEEE8021X_EAPOL */
{ INT_RANGE(mode, 0, 4) },
{ INT_RANGE(proactive_key_caching, 0, 1) },
{ INT_RANGE(disabled, 0, 2) },
{ STR(id_str) },
#ifdef CONFIG_IEEE80211W
{ INT_RANGE(ieee80211w, 0, 2) },
#endif /* CONFIG_IEEE80211W */
{ INT_RANGE(peerkey, 0, 1) },
{ INT_RANGE(mixed_cell, 0, 1) },
{ INT_RANGE(frequency, 0, 65000) },
{ INT(wpa_ptk_rekey) },
{ STR(bgscan) },
{ INT_RANGE(ignore_broadcast_ssid, 0, 2) },
#ifdef CONFIG_P2P
{ FUNC(p2p_client_list) },
{ FUNC(psk_list) },
#endif /* CONFIG_P2P */
#ifdef CONFIG_HT_OVERRIDES
{ INT_RANGE(disable_ht, 0, 1) },
{ INT_RANGE(disable_ht40, -1, 1) },
{ INT_RANGE(disable_sgi, 0, 1) },
{ INT_RANGE(disable_max_amsdu, -1, 1) },
{ INT_RANGE(ampdu_factor, -1, 3) },
{ INT_RANGE(ampdu_density, -1, 7) },
{ STR(ht_mcs) },
#endif /* CONFIG_HT_OVERRIDES */
#ifdef CONFIG_VHT_OVERRIDES
{ INT_RANGE(disable_vht, 0, 1) },
{ INT(vht_capa) },
{ INT(vht_capa_mask) },
{ INT_RANGE(vht_rx_mcs_nss_1, -1, 3) },
{ INT_RANGE(vht_rx_mcs_nss_2, -1, 3) },
{ INT_RANGE(vht_rx_mcs_nss_3, -1, 3) },
{ INT_RANGE(vht_rx_mcs_nss_4, -1, 3) },
{ INT_RANGE(vht_rx_mcs_nss_5, -1, 3) },
{ INT_RANGE(vht_rx_mcs_nss_6, -1, 3) },
{ INT_RANGE(vht_rx_mcs_nss_7, -1, 3) },
{ INT_RANGE(vht_rx_mcs_nss_8, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_1, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_2, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_3, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_4, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_5, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_6, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_7, -1, 3) },
{ INT_RANGE(vht_tx_mcs_nss_8, -1, 3) },
#endif /* CONFIG_VHT_OVERRIDES */
{ INT(ap_max_inactivity) },
{ INT(dtim_period) },
{ INT(beacon_int) },
};
#undef OFFSET
#undef _STR
#undef STR
#undef STR_KEY
#undef _STR_LEN
#undef STR_LEN
#undef STR_LEN_KEY
#undef _STR_RANGE
#undef STR_RANGE
#undef STR_RANGE_KEY
#undef _INT
#undef INT
#undef INT_RANGE
#undef _FUNC
#undef FUNC
#undef FUNC_KEY
#define NUM_SSID_FIELDS (sizeof(ssid_fields) / sizeof(ssid_fields[0]))
/**
* wpa_config_add_prio_network - Add a network to priority lists
* @config: Configuration data from wpa_config_read()
* @ssid: Pointer to the network configuration to be added to the list
* Returns: 0 on success, -1 on failure
*
* This function is used to add a network block to the priority list of
* networks. This must be called for each network when reading in the full
* configuration. In addition, this can be used indirectly when updating
* priorities by calling wpa_config_update_prio_list().
*/
int wpa_config_add_prio_network(struct wpa_config *config,
struct wpa_ssid *ssid)
{
int prio;
struct wpa_ssid *prev, **nlist;
/*
* Add to an existing priority list if one is available for the
* configured priority level for this network.
*/
for (prio = 0; prio < config->num_prio; prio++) {
prev = config->pssid[prio];
if (prev->priority == ssid->priority) {
while (prev->pnext)
prev = prev->pnext;
prev->pnext = ssid;
return 0;
}
}
/* First network for this priority - add a new priority list */
nlist = os_realloc_array(config->pssid, config->num_prio + 1,
sizeof(struct wpa_ssid *));
if (nlist == NULL)
return -1;
for (prio = 0; prio < config->num_prio; prio++) {
if (nlist[prio]->priority < ssid->priority) {
os_memmove(&nlist[prio + 1], &nlist[prio],
(config->num_prio - prio) *
sizeof(struct wpa_ssid *));
break;
}
}
nlist[prio] = ssid;
config->num_prio++;
config->pssid = nlist;
return 0;
}
/**
* wpa_config_update_prio_list - Update network priority list
* @config: Configuration data from wpa_config_read()
* Returns: 0 on success, -1 on failure
*
* This function is called to update the priority list of networks in the
* configuration when a network is being added or removed. This is also called
* if a priority for a network is changed.
*/
int wpa_config_update_prio_list(struct wpa_config *config)
{
struct wpa_ssid *ssid;
int ret = 0;
os_free(config->pssid);
config->pssid = NULL;
config->num_prio = 0;
ssid = config->ssid;
while (ssid) {
ssid->pnext = NULL;
if (wpa_config_add_prio_network(config, ssid) < 0)
ret = -1;
ssid = ssid->next;
}
return ret;
}
#ifdef IEEE8021X_EAPOL
static void eap_peer_config_free(struct eap_peer_config *eap)
{
os_free(eap->eap_methods);
os_free(eap->identity);
os_free(eap->anonymous_identity);
os_free(eap->password);
os_free(eap->ca_cert);
os_free(eap->ca_path);
os_free(eap->client_cert);
os_free(eap->private_key);
os_free(eap->private_key_passwd);
os_free(eap->dh_file);
os_free(eap->subject_match);
os_free(eap->altsubject_match);
os_free(eap->ca_cert2);
os_free(eap->ca_path2);
os_free(eap->client_cert2);
os_free(eap->private_key2);
os_free(eap->private_key2_passwd);
os_free(eap->dh_file2);
os_free(eap->subject_match2);
os_free(eap->altsubject_match2);
os_free(eap->phase1);
os_free(eap->phase2);
os_free(eap->pcsc);
os_free(eap->pin);
os_free(eap->engine_id);
os_free(eap->key_id);
os_free(eap->cert_id);
os_free(eap->ca_cert_id);
os_free(eap->key2_id);
os_free(eap->cert2_id);
os_free(eap->ca_cert2_id);
os_free(eap->pin2);
os_free(eap->engine2_id);
os_free(eap->otp);
os_free(eap->pending_req_otp);
os_free(eap->pac_file);
os_free(eap->new_password);
}
#endif /* IEEE8021X_EAPOL */
/**
* wpa_config_free_ssid - Free network/ssid configuration data
* @ssid: Configuration data for the network
*
* This function frees all resources allocated for the network configuration
* data.
*/
void wpa_config_free_ssid(struct wpa_ssid *ssid)
{
struct psk_list_entry *psk;
os_free(ssid->ssid);
os_free(ssid->passphrase);
os_free(ssid->ext_psk);
#ifdef IEEE8021X_EAPOL
eap_peer_config_free(&ssid->eap);
#endif /* IEEE8021X_EAPOL */
os_free(ssid->id_str);
os_free(ssid->scan_freq);
os_free(ssid->freq_list);
os_free(ssid->bgscan);
os_free(ssid->p2p_client_list);
#ifdef CONFIG_HT_OVERRIDES
os_free(ssid->ht_mcs);
#endif /* CONFIG_HT_OVERRIDES */
while ((psk = dl_list_first(&ssid->psk_list, struct psk_list_entry,
list))) {
dl_list_del(&psk->list);
os_free(psk);
}
os_free(ssid);
}
void wpa_config_free_cred(struct wpa_cred *cred)
{
os_free(cred->realm);
os_free(cred->username);
os_free(cred->password);
os_free(cred->ca_cert);
os_free(cred->client_cert);
os_free(cred->private_key);
os_free(cred->private_key_passwd);
os_free(cred->imsi);
os_free(cred->milenage);
os_free(cred->domain);
os_free(cred->eap_method);
os_free(cred->phase1);
os_free(cred->phase2);
os_free(cred->excluded_ssid);
os_free(cred);
}
/**
* wpa_config_free - Free configuration data
* @config: Configuration data from wpa_config_read()
*
* This function frees all resources allocated for the configuration data by
* wpa_config_read().
*/
void wpa_config_free(struct wpa_config *config)
{
#ifndef CONFIG_NO_CONFIG_BLOBS
struct wpa_config_blob *blob, *prevblob;
#endif /* CONFIG_NO_CONFIG_BLOBS */
struct wpa_ssid *ssid, *prev = NULL;
struct wpa_cred *cred, *cprev;
ssid = config->ssid;
while (ssid) {
prev = ssid;
ssid = ssid->next;
wpa_config_free_ssid(prev);
}
cred = config->cred;
while (cred) {
cprev = cred;
cred = cred->next;
wpa_config_free_cred(cprev);
}
#ifndef CONFIG_NO_CONFIG_BLOBS
blob = config->blobs;
prevblob = NULL;
while (blob) {
prevblob = blob;
blob = blob->next;
wpa_config_free_blob(prevblob);
}
#endif /* CONFIG_NO_CONFIG_BLOBS */
wpabuf_free(config->wps_vendor_ext_m1);
os_free(config->ctrl_interface);
os_free(config->ctrl_interface_group);
os_free(config->opensc_engine_path);
os_free(config->pkcs11_engine_path);
os_free(config->pkcs11_module_path);
os_free(config->pcsc_reader);
os_free(config->pcsc_pin);
os_free(config->driver_param);
os_free(config->device_name);
os_free(config->manufacturer);
os_free(config->model_name);
os_free(config->model_number);
os_free(config->serial_number);
os_free(config->config_methods);
os_free(config->p2p_ssid_postfix);
os_free(config->pssid);
os_free(config->p2p_pref_chan);
os_free(config->autoscan);
os_free(config->freq_list);
wpabuf_free(config->wps_nfc_dh_pubkey);
wpabuf_free(config->wps_nfc_dh_privkey);
wpabuf_free(config->wps_nfc_dev_pw);
os_free(config->ext_password_backend);
os_free(config->sae_groups);
wpabuf_free(config->ap_vendor_elements);
os_free(config);
}
/**
* wpa_config_foreach_network - Iterate over each configured network
* @config: Configuration data from wpa_config_read()
* @func: Callback function to process each network
* @arg: Opaque argument to pass to callback function
*
* Iterate over the set of configured networks calling the specified
* function for each item. We guard against callbacks removing the
* supplied network.
*/
void wpa_config_foreach_network(struct wpa_config *config,
void (*func)(void *, struct wpa_ssid *),
void *arg)
{
struct wpa_ssid *ssid, *next;
ssid = config->ssid;
while (ssid) {
next = ssid->next;
func(arg, ssid);
ssid = next;
}
}
/**
* wpa_config_get_network - Get configured network based on id
* @config: Configuration data from wpa_config_read()
* @id: Unique network id to search for
* Returns: Network configuration or %NULL if not found
*/
struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id)
{
struct wpa_ssid *ssid;
ssid = config->ssid;
while (ssid) {
if (id == ssid->id)
break;
ssid = ssid->next;
}
return ssid;
}
/**
* wpa_config_add_network - Add a new network with empty configuration
* @config: Configuration data from wpa_config_read()
* Returns: The new network configuration or %NULL if operation failed
*/
struct wpa_ssid * wpa_config_add_network(struct wpa_config *config)
{
int id;
struct wpa_ssid *ssid, *last = NULL;
id = -1;
ssid = config->ssid;
while (ssid) {
if (ssid->id > id)
id = ssid->id;
last = ssid;
ssid = ssid->next;
}
id++;
ssid = os_zalloc(sizeof(*ssid));
if (ssid == NULL)
return NULL;
ssid->id = id;
dl_list_init(&ssid->psk_list);
if (last)
last->next = ssid;
else
config->ssid = ssid;
wpa_config_update_prio_list(config);
return ssid;
}
/**
* wpa_config_remove_network - Remove a configured network based on id
* @config: Configuration data from wpa_config_read()
* @id: Unique network id to search for
* Returns: 0 on success, or -1 if the network was not found
*/
int wpa_config_remove_network(struct wpa_config *config, int id)
{
struct wpa_ssid *ssid, *prev = NULL;
ssid = config->ssid;
while (ssid) {
if (id == ssid->id)
break;
prev = ssid;
ssid = ssid->next;
}
if (ssid == NULL)
return -1;
if (prev)
prev->next = ssid->next;
else
config->ssid = ssid->next;
wpa_config_update_prio_list(config);
wpa_config_free_ssid(ssid);
return 0;
}
/**
* wpa_config_set_network_defaults - Set network default values
* @ssid: Pointer to network configuration data
*/
void wpa_config_set_network_defaults(struct wpa_ssid *ssid)
{
ssid->proto = DEFAULT_PROTO;
ssid->pairwise_cipher = DEFAULT_PAIRWISE;
ssid->group_cipher = DEFAULT_GROUP;
ssid->key_mgmt = DEFAULT_KEY_MGMT;
ssid->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
#ifdef IEEE8021X_EAPOL
ssid->eapol_flags = DEFAULT_EAPOL_FLAGS;
ssid->eap_workaround = DEFAULT_EAP_WORKAROUND;
ssid->eap.fragment_size = DEFAULT_FRAGMENT_SIZE;
#endif /* IEEE8021X_EAPOL */
#ifdef CONFIG_HT_OVERRIDES
ssid->disable_ht = DEFAULT_DISABLE_HT;
ssid->disable_ht40 = DEFAULT_DISABLE_HT40;
ssid->disable_sgi = DEFAULT_DISABLE_SGI;
ssid->disable_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU;
ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR;
ssid->ampdu_density = DEFAULT_AMPDU_DENSITY;
#endif /* CONFIG_HT_OVERRIDES */
#ifdef CONFIG_VHT_OVERRIDES
ssid->vht_rx_mcs_nss_1 = -1;
ssid->vht_rx_mcs_nss_2 = -1;
ssid->vht_rx_mcs_nss_3 = -1;
ssid->vht_rx_mcs_nss_4 = -1;
ssid->vht_rx_mcs_nss_5 = -1;
ssid->vht_rx_mcs_nss_6 = -1;
ssid->vht_rx_mcs_nss_7 = -1;
ssid->vht_rx_mcs_nss_8 = -1;
ssid->vht_tx_mcs_nss_1 = -1;
ssid->vht_tx_mcs_nss_2 = -1;
ssid->vht_tx_mcs_nss_3 = -1;
ssid->vht_tx_mcs_nss_4 = -1;
ssid->vht_tx_mcs_nss_5 = -1;
ssid->vht_tx_mcs_nss_6 = -1;
ssid->vht_tx_mcs_nss_7 = -1;
ssid->vht_tx_mcs_nss_8 = -1;
#endif /* CONFIG_VHT_OVERRIDES */
ssid->proactive_key_caching = -1;
#ifdef CONFIG_IEEE80211W
ssid->ieee80211w = MGMT_FRAME_PROTECTION_DEFAULT;
#endif /* CONFIG_IEEE80211W */
}
/**
* wpa_config_set - Set a variable in network configuration
* @ssid: Pointer to network configuration data
* @var: Variable name, e.g., "ssid"
* @value: Variable value
* @line: Line number in configuration file or 0 if not used
* Returns: 0 on success, -1 on failure
*
* This function can be used to set network configuration variables based on
* both the configuration file and management interface input. The value
* parameter must be in the same format as the text-based configuration file is
* using. For example, strings are using double quotation marks.
*/
int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
int line)
{
size_t i;
int ret = 0;
if (ssid == NULL || var == NULL || value == NULL)
return -1;
for (i = 0; i < NUM_SSID_FIELDS; i++) {
const struct parse_data *field = &ssid_fields[i];
if (os_strcmp(var, field->name) != 0)
continue;
if (field->parser(field, ssid, line, value)) {
if (line) {
wpa_printf(MSG_ERROR, "Line %d: failed to "
"parse %s '%s'.", line, var, value);
}
ret = -1;
}
break;
}
if (i == NUM_SSID_FIELDS) {
if (line) {
wpa_printf(MSG_ERROR, "Line %d: unknown network field "
"'%s'.", line, var);
}
ret = -1;
}
return ret;
}
int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
const char *value)
{
size_t len;
char *buf;
int ret;
len = os_strlen(value);
buf = os_malloc(len + 3);
if (buf == NULL)
return -1;
buf[0] = '"';
os_memcpy(buf + 1, value, len);
buf[len + 1] = '"';
buf[len + 2] = '\0';
ret = wpa_config_set(ssid, var, buf, 0);
os_free(buf);
return ret;
}
/**
* wpa_config_get_all - Get all options from network configuration
* @ssid: Pointer to network configuration data
* @get_keys: Determines if keys/passwords will be included in returned list
* (if they may be exported)
* Returns: %NULL terminated list of all set keys and their values in the form
* of [key1, val1, key2, val2, ... , NULL]
*
* This function can be used to get list of all configured network properties.
* The caller is responsible for freeing the returned list and all its
* elements.
*/
char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys)
{
const struct parse_data *field;
char *key, *value;
size_t i;
char **props;
int fields_num;
get_keys = get_keys && ssid->export_keys;
props = os_calloc(2 * NUM_SSID_FIELDS + 1, sizeof(char *));
if (!props)
return NULL;
fields_num = 0;
for (i = 0; i < NUM_SSID_FIELDS; i++) {
field = &ssid_fields[i];
if (field->key_data && !get_keys)
continue;
value = field->writer(field, ssid);
if (value == NULL)
continue;
if (os_strlen(value) == 0) {
os_free(value);
continue;
}
key = os_strdup(field->name);
if (key == NULL) {
os_free(value);
goto err;
}
props[fields_num * 2] = key;
props[fields_num * 2 + 1] = value;
fields_num++;
}
return props;
err:
value = *props;
while (value)
os_free(value++);
os_free(props);
return NULL;
}
#ifndef NO_CONFIG_WRITE
/**
* wpa_config_get - Get a variable in network configuration
* @ssid: Pointer to network configuration data
* @var: Variable name, e.g., "ssid"
* Returns: Value of the variable or %NULL on failure
*
* This function can be used to get network configuration variables. The
* returned value is a copy of the configuration variable in text format, i.e,.
* the same format that the text-based configuration file and wpa_config_set()
* are using for the value. The caller is responsible for freeing the returned
* value.
*/
char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
{
size_t i;
if (ssid == NULL || var == NULL)
return NULL;
for (i = 0; i < NUM_SSID_FIELDS; i++) {
const struct parse_data *field = &ssid_fields[i];
if (os_strcmp(var, field->name) == 0)
return field->writer(field, ssid);
}
return NULL;
}
/**
* wpa_config_get_no_key - Get a variable in network configuration (no keys)
* @ssid: Pointer to network configuration data
* @var: Variable name, e.g., "ssid"
* Returns: Value of the variable or %NULL on failure
*
* This function can be used to get network configuration variable like
* wpa_config_get(). The only difference is that this functions does not expose
* key/password material from the configuration. In case a key/password field
* is requested, the returned value is an empty string or %NULL if the variable
* is not set or "*" if the variable is set (regardless of its value). The
* returned value is a copy of the configuration variable in text format, i.e,.
* the same format that the text-based configuration file and wpa_config_set()
* are using for the value. The caller is responsible for freeing the returned
* value.
*/
char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var)
{
size_t i;
if (ssid == NULL || var == NULL)
return NULL;
for (i = 0; i < NUM_SSID_FIELDS; i++) {
const struct parse_data *field = &ssid_fields[i];
if (os_strcmp(var, field->name) == 0) {
char *res = field->writer(field, ssid);
if (field->key_data) {
if (res && res[0]) {
wpa_printf(MSG_DEBUG, "Do not allow "
"key_data field to be "
"exposed");
os_free(res);
return os_strdup("*");
}
os_free(res);
return NULL;
}
return res;
}
}
return NULL;
}
#endif /* NO_CONFIG_WRITE */
/**
* wpa_config_update_psk - Update WPA PSK based on passphrase and SSID
* @ssid: Pointer to network configuration data
*
* This function must be called to update WPA PSK when either SSID or the
* passphrase has changed for the network configuration.
*/
void wpa_config_update_psk(struct wpa_ssid *ssid)
{
#ifndef CONFIG_NO_PBKDF2
pbkdf2_sha1(ssid->passphrase, ssid->ssid, ssid->ssid_len, 4096,
ssid->psk, PMK_LEN);
wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
ssid->psk, PMK_LEN);
ssid->psk_set = 1;
#endif /* CONFIG_NO_PBKDF2 */
}
int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
const char *value, int line)
{
char *val;
size_t len;
if (os_strcmp(var, "priority") == 0) {
cred->priority = atoi(value);
return 0;
}
if (os_strcmp(var, "pcsc") == 0) {
cred->pcsc = atoi(value);
return 0;
}
if (os_strcmp(var, "eap") == 0) {
struct eap_method_type method;
method.method = eap_peer_get_type(value, &method.vendor);
if (method.vendor == EAP_VENDOR_IETF &&
method.method == EAP_TYPE_NONE) {
wpa_printf(MSG_ERROR, "Line %d: unknown EAP type '%s' "
"for a credential", line, value);
return -1;
}
os_free(cred->eap_method);
cred->eap_method = os_malloc(sizeof(*cred->eap_method));
if (cred->eap_method == NULL)
return -1;
os_memcpy(cred->eap_method, &method, sizeof(method));
return 0;
}
if (os_strcmp(var, "password") == 0 &&
os_strncmp(value, "ext:", 4) == 0) {
os_free(cred->password);
cred->password = os_strdup(value);
cred->ext_password = 1;
return 0;
}
val = wpa_config_parse_string(value, &len);
if (val == NULL) {
wpa_printf(MSG_ERROR, "Line %d: invalid field '%s' string "
"value '%s'.", line, var, value);
return -1;
}
if (os_strcmp(var, "realm") == 0) {
os_free(cred->realm);
cred->realm = val;
return 0;
}
if (os_strcmp(var, "username") == 0) {
os_free(cred->username);
cred->username = val;
return 0;
}
if (os_strcmp(var, "password") == 0) {
os_free(cred->password);
cred->password = val;
cred->ext_password = 0;
return 0;
}
if (os_strcmp(var, "ca_cert") == 0) {
os_free(cred->ca_cert);
cred->ca_cert = val;
return 0;
}
if (os_strcmp(var, "client_cert") == 0) {
os_free(cred->client_cert);
cred->client_cert = val;
return 0;
}
if (os_strcmp(var, "private_key") == 0) {
os_free(cred->private_key);
cred->private_key = val;
return 0;
}
if (os_strcmp(var, "private_key_passwd") == 0) {
os_free(cred->private_key_passwd);
cred->private_key_passwd = val;
return 0;
}
if (os_strcmp(var, "imsi") == 0) {
os_free(cred->imsi);
cred->imsi = val;
return 0;
}
if (os_strcmp(var, "milenage") == 0) {
os_free(cred->milenage);
cred->milenage = val;
return 0;
}
if (os_strcmp(var, "domain") == 0) {
os_free(cred->domain);
cred->domain = val;
return 0;
}
if (os_strcmp(var, "phase1") == 0) {
os_free(cred->phase1);
cred->phase1 = val;
return 0;
}
if (os_strcmp(var, "phase2") == 0) {
os_free(cred->phase2);
cred->phase2 = val;
return 0;
}
if (os_strcmp(var, "roaming_consortium") == 0) {
if (len < 3 || len > sizeof(cred->roaming_consortium)) {
wpa_printf(MSG_ERROR, "Line %d: invalid "
"roaming_consortium length %d (3..15 "
"expected)", line, (int) len);
os_free(val);
return -1;
}
os_memcpy(cred->roaming_consortium, val, len);
cred->roaming_consortium_len = len;
os_free(val);
return 0;
}
if (os_strcmp(var, "excluded_ssid") == 0) {
struct excluded_ssid *e;
if (len > MAX_SSID_LEN) {
wpa_printf(MSG_ERROR, "Line %d: invalid "
"excluded_ssid length %d", line, (int) len);
os_free(val);
return -1;
}
e = os_realloc_array(cred->excluded_ssid,
cred->num_excluded_ssid + 1,
sizeof(struct excluded_ssid));
if (e == NULL) {
os_free(val);
return -1;
}
cred->excluded_ssid = e;
e = &cred->excluded_ssid[cred->num_excluded_ssid++];
os_memcpy(e->ssid, val, len);
e->ssid_len = len;
os_free(val);
return 0;
}
if (line) {
wpa_printf(MSG_ERROR, "Line %d: unknown cred field '%s'.",
line, var);
}
os_free(val);
return -1;
}
struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id)
{
struct wpa_cred *cred;
cred = config->cred;
while (cred) {
if (id == cred->id)
break;
cred = cred->next;
}
return cred;
}
struct wpa_cred * wpa_config_add_cred(struct wpa_config *config)
{
int id;
struct wpa_cred *cred, *last = NULL;
id = -1;
cred = config->cred;
while (cred) {
if (cred->id > id)
id = cred->id;
last = cred;
cred = cred->next;
}
id++;
cred = os_zalloc(sizeof(*cred));
if (cred == NULL)
return NULL;
cred->id = id;
if (last)
last->next = cred;
else
config->cred = cred;
return cred;
}
int wpa_config_remove_cred(struct wpa_config *config, int id)
{
struct wpa_cred *cred, *prev = NULL;
cred = config->cred;
while (cred) {
if (id == cred->id)
break;
prev = cred;
cred = cred->next;
}
if (cred == NULL)
return -1;
if (prev)
prev->next = cred->next;
else
config->cred = cred->next;
wpa_config_free_cred(cred);
return 0;
}
#ifndef CONFIG_NO_CONFIG_BLOBS
/**
* wpa_config_get_blob - Get a named configuration blob
* @config: Configuration data from wpa_config_read()
* @name: Name of the blob
* Returns: Pointer to blob data or %NULL if not found
*/
const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
const char *name)
{
struct wpa_config_blob *blob = config->blobs;
while (blob) {
if (os_strcmp(blob->name, name) == 0)
return blob;
blob = blob->next;
}
return NULL;
}
/**
* wpa_config_set_blob - Set or add a named configuration blob
* @config: Configuration data from wpa_config_read()
* @blob: New value for the blob
*
* Adds a new configuration blob or replaces the current value of an existing
* blob.
*/
void wpa_config_set_blob(struct wpa_config *config,
struct wpa_config_blob *blob)
{
wpa_config_remove_blob(config, blob->name);
blob->next = config->blobs;
config->blobs = blob;
}
/**
* wpa_config_free_blob - Free blob data
* @blob: Pointer to blob to be freed
*/
void wpa_config_free_blob(struct wpa_config_blob *blob)
{
if (blob) {
os_free(blob->name);
os_free(blob->data);
os_free(blob);
}
}
/**
* wpa_config_remove_blob - Remove a named configuration blob
* @config: Configuration data from wpa_config_read()
* @name: Name of the blob to remove
* Returns: 0 if blob was removed or -1 if blob was not found
*/
int wpa_config_remove_blob(struct wpa_config *config, const char *name)
{
struct wpa_config_blob *pos = config->blobs, *prev = NULL;
while (pos) {
if (os_strcmp(pos->name, name) == 0) {
if (prev)
prev->next = pos->next;
else
config->blobs = pos->next;
wpa_config_free_blob(pos);
return 0;
}
prev = pos;
pos = pos->next;
}
return -1;
}
#endif /* CONFIG_NO_CONFIG_BLOBS */
/**
* wpa_config_alloc_empty - Allocate an empty configuration
* @ctrl_interface: Control interface parameters, e.g., path to UNIX domain
* socket
* @driver_param: Driver parameters
* Returns: Pointer to allocated configuration data or %NULL on failure
*/
struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
const char *driver_param)
{
struct wpa_config *config;
const int aCWmin = 4, aCWmax = 10;
const struct hostapd_wmm_ac_params ac_bk =
{ aCWmin, aCWmax, 7, 0, 0 }; /* background traffic */
const struct hostapd_wmm_ac_params ac_be =
{ aCWmin, aCWmax, 3, 0, 0 }; /* best effort traffic */
const struct hostapd_wmm_ac_params ac_vi = /* video traffic */
{ aCWmin - 1, aCWmin, 2, 3000 / 32, 0 };
const struct hostapd_wmm_ac_params ac_vo = /* voice traffic */
{ aCWmin - 2, aCWmin - 1, 2, 1500 / 32, 0 };
config = os_zalloc(sizeof(*config));
if (config == NULL)
return NULL;
config->eapol_version = DEFAULT_EAPOL_VERSION;
config->ap_scan = DEFAULT_AP_SCAN;
config->fast_reauth = DEFAULT_FAST_REAUTH;
config->p2p_go_intent = DEFAULT_P2P_GO_INTENT;
config->p2p_intra_bss = DEFAULT_P2P_INTRA_BSS;
config->p2p_go_max_inactivity = DEFAULT_P2P_GO_MAX_INACTIVITY;
config->bss_max_count = DEFAULT_BSS_MAX_COUNT;
config->bss_expiration_age = DEFAULT_BSS_EXPIRATION_AGE;
config->bss_expiration_scan_count = DEFAULT_BSS_EXPIRATION_SCAN_COUNT;
config->max_num_sta = DEFAULT_MAX_NUM_STA;
config->access_network_type = DEFAULT_ACCESS_NETWORK_TYPE;
config->scan_cur_freq = DEFAULT_SCAN_CUR_FREQ;
config->wmm_ac_params[0] = ac_be;
config->wmm_ac_params[1] = ac_bk;
config->wmm_ac_params[2] = ac_vi;
config->wmm_ac_params[3] = ac_vo;
if (ctrl_interface)
config->ctrl_interface = os_strdup(ctrl_interface);
if (driver_param)
config->driver_param = os_strdup(driver_param);
return config;
}
#ifndef CONFIG_NO_STDOUT_DEBUG
/**
* wpa_config_debug_dump_networks - Debug dump of configured networks
* @config: Configuration data from wpa_config_read()
*/
void wpa_config_debug_dump_networks(struct wpa_config *config)
{
int prio;
struct wpa_ssid *ssid;
for (prio = 0; prio < config->num_prio; prio++) {
ssid = config->pssid[prio];
wpa_printf(MSG_DEBUG, "Priority group %d",
ssid->priority);
while (ssid) {
wpa_printf(MSG_DEBUG, " id=%d ssid='%s'",
ssid->id,
wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
ssid = ssid->pnext;
}
}
}
#endif /* CONFIG_NO_STDOUT_DEBUG */
struct global_parse_data {
char *name;
int (*parser)(const struct global_parse_data *data,
struct wpa_config *config, int line, const char *value);
void *param1, *param2, *param3;
unsigned int changed_flag;
};
static int wpa_global_config_parse_int(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *pos)
{
int val, *dst;
char *end;
dst = (int *) (((u8 *) config) + (long) data->param1);
val = strtol(pos, &end, 0);
if (*end) {
wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
line, pos);
return -1;
}
*dst = val;
wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
if (data->param2 && *dst < (long) data->param2) {
wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
"min_value=%ld)", line, data->name, *dst,
(long) data->param2);
*dst = (long) data->param2;
return -1;
}
if (data->param3 && *dst > (long) data->param3) {
wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
"max_value=%ld)", line, data->name, *dst,
(long) data->param3);
*dst = (long) data->param3;
return -1;
}
return 0;
}
static int wpa_global_config_parse_str(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *pos)
{
size_t len;
char **dst, *tmp;
len = os_strlen(pos);
if (data->param2 && len < (size_t) data->param2) {
wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
"min_len=%ld)", line, data->name,
(unsigned long) len, (long) data->param2);
return -1;
}
if (data->param3 && len > (size_t) data->param3) {
wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
"max_len=%ld)", line, data->name,
(unsigned long) len, (long) data->param3);
return -1;
}
tmp = os_strdup(pos);
if (tmp == NULL)
return -1;
dst = (char **) (((u8 *) config) + (long) data->param1);
os_free(*dst);
*dst = tmp;
wpa_printf(MSG_DEBUG, "%s='%s'", data->name, *dst);
return 0;
}
static int wpa_global_config_parse_bin(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *pos)
{
size_t len;
struct wpabuf **dst, *tmp;
len = os_strlen(pos);
if (len & 0x01)
return -1;
tmp = wpabuf_alloc(len / 2);
if (tmp == NULL)
return -1;
if (hexstr2bin(pos, wpabuf_put(tmp, len / 2), len / 2)) {
wpabuf_free(tmp);
return -1;
}
dst = (struct wpabuf **) (((u8 *) config) + (long) data->param1);
wpabuf_free(*dst);
*dst = tmp;
wpa_printf(MSG_DEBUG, "%s", data->name);
return 0;
}
static int wpa_config_process_freq_list(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *value)
{
int *freqs;
freqs = wpa_config_parse_int_array(value);
if (freqs == NULL)
return -1;
os_free(config->freq_list);
config->freq_list = freqs;
return 0;
}
static int wpa_config_process_country(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *pos)
{
if (!pos[0] || !pos[1]) {
wpa_printf(MSG_DEBUG, "Invalid country set");
return -1;
}
config->country[0] = pos[0];
config->country[1] = pos[1];
wpa_printf(MSG_DEBUG, "country='%c%c'",
config->country[0], config->country[1]);
return 0;
}
static int wpa_config_process_load_dynamic_eap(
const struct global_parse_data *data, struct wpa_config *config,
int line, const char *so)
{
int ret;
wpa_printf(MSG_DEBUG, "load_dynamic_eap=%s", so);
ret = eap_peer_method_load(so);
if (ret == -2) {
wpa_printf(MSG_DEBUG, "This EAP type was already loaded - not "
"reloading.");
} else if (ret) {
wpa_printf(MSG_ERROR, "Line %d: Failed to load dynamic EAP "
"method '%s'.", line, so);
return -1;
}
return 0;
}
#ifdef CONFIG_WPS
static int wpa_config_process_uuid(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *pos)
{
char buf[40];
if (uuid_str2bin(pos, config->uuid)) {
wpa_printf(MSG_ERROR, "Line %d: invalid UUID", line);
return -1;
}
uuid_bin2str(config->uuid, buf, sizeof(buf));
wpa_printf(MSG_DEBUG, "uuid=%s", buf);
return 0;
}
static int wpa_config_process_device_type(
const struct global_parse_data *data,
struct wpa_config *config, int line, const char *pos)
{
return wps_dev_type_str2bin(pos, config->device_type);
}
static int wpa_config_process_os_version(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *pos)
{
if (hexstr2bin(pos, config->os_version, 4)) {
wpa_printf(MSG_ERROR, "Line %d: invalid os_version", line);
return -1;
}
wpa_printf(MSG_DEBUG, "os_version=%08x",
WPA_GET_BE32(config->os_version));
return 0;
}
static int wpa_config_process_wps_vendor_ext_m1(
const struct global_parse_data *data,
struct wpa_config *config, int line, const char *pos)
{
struct wpabuf *tmp;
int len = os_strlen(pos) / 2;
u8 *p;
if (!len) {
wpa_printf(MSG_ERROR, "Line %d: "
"invalid wps_vendor_ext_m1", line);
return -1;
}
tmp = wpabuf_alloc(len);
if (tmp) {
p = wpabuf_put(tmp, len);
if (hexstr2bin(pos, p, len)) {
wpa_printf(MSG_ERROR, "Line %d: "
"invalid wps_vendor_ext_m1", line);
wpabuf_free(tmp);
return -1;
}
wpabuf_free(config->wps_vendor_ext_m1);
config->wps_vendor_ext_m1 = tmp;
} else {
wpa_printf(MSG_ERROR, "Can not allocate "
"memory for wps_vendor_ext_m1");
return -1;
}
return 0;
}
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
static int wpa_config_process_sec_device_type(
const struct global_parse_data *data,
struct wpa_config *config, int line, const char *pos)
{
int idx;
if (config->num_sec_device_types >= MAX_SEC_DEVICE_TYPES) {
wpa_printf(MSG_ERROR, "Line %d: too many sec_device_type "
"items", line);
return -1;
}
idx = config->num_sec_device_types;
if (wps_dev_type_str2bin(pos, config->sec_device_type[idx]))
return -1;
config->num_sec_device_types++;
return 0;
}
static int wpa_config_process_p2p_pref_chan(
const struct global_parse_data *data,
struct wpa_config *config, int line, const char *pos)
{
struct p2p_channel *pref = NULL, *n;
unsigned int num = 0;
const char *pos2;
u8 op_class, chan;
/* format: class:chan,class:chan,... */
while (*pos) {
op_class = atoi(pos);
pos2 = os_strchr(pos, ':');
if (pos2 == NULL)
goto fail;
pos2++;
chan = atoi(pos2);
n = os_realloc_array(pref, num + 1,
sizeof(struct p2p_channel));
if (n == NULL)
goto fail;
pref = n;
pref[num].op_class = op_class;
pref[num].chan = chan;
num++;
pos = os_strchr(pos2, ',');
if (pos == NULL)
break;
pos++;
}
os_free(config->p2p_pref_chan);
config->p2p_pref_chan = pref;
config->num_p2p_pref_chan = num;
wpa_hexdump(MSG_DEBUG, "P2P: Preferred class/channel pairs",
(u8 *) config->p2p_pref_chan,
config->num_p2p_pref_chan * sizeof(struct p2p_channel));
return 0;
fail:
os_free(pref);
wpa_printf(MSG_ERROR, "Line %d: Invalid p2p_pref_chan list", line);
return -1;
}
#endif /* CONFIG_P2P */
static int wpa_config_process_hessid(
const struct global_parse_data *data,
struct wpa_config *config, int line, const char *pos)
{
if (hwaddr_aton2(pos, config->hessid) < 0) {
wpa_printf(MSG_ERROR, "Line %d: Invalid hessid '%s'",
line, pos);
return -1;
}
return 0;
}
static int wpa_config_process_sae_groups(
const struct global_parse_data *data,
struct wpa_config *config, int line, const char *pos)
{
int *groups = wpa_config_parse_int_array(pos);
if (groups == NULL) {
wpa_printf(MSG_ERROR, "Line %d: Invalid sae_groups '%s'",
line, pos);
return -1;
}
os_free(config->sae_groups);
config->sae_groups = groups;
return 0;
}
static int wpa_config_process_ap_vendor_elements(
const struct global_parse_data *data,
struct wpa_config *config, int line, const char *pos)
{
struct wpabuf *tmp;
int len = os_strlen(pos) / 2;
u8 *p;
if (!len) {
wpa_printf(MSG_ERROR, "Line %d: invalid ap_vendor_elements",
line);
return -1;
}
tmp = wpabuf_alloc(len);
if (tmp) {
p = wpabuf_put(tmp, len);
if (hexstr2bin(pos, p, len)) {
wpa_printf(MSG_ERROR, "Line %d: invalid "
"ap_vendor_elements", line);
wpabuf_free(tmp);
return -1;
}
wpabuf_free(config->ap_vendor_elements);
config->ap_vendor_elements = tmp;
} else {
wpa_printf(MSG_ERROR, "Cannot allocate memory for "
"ap_vendor_elements");
return -1;
}
return 0;
}
#ifdef OFFSET
#undef OFFSET
#endif /* OFFSET */
/* OFFSET: Get offset of a variable within the wpa_config structure */
#define OFFSET(v) ((void *) &((struct wpa_config *) 0)->v)
#define FUNC(f) #f, wpa_config_process_ ## f, OFFSET(f), NULL, NULL
#define FUNC_NO_VAR(f) #f, wpa_config_process_ ## f, NULL, NULL, NULL
#define _INT(f) #f, wpa_global_config_parse_int, OFFSET(f)
#define INT(f) _INT(f), NULL, NULL
#define INT_RANGE(f, min, max) _INT(f), (void *) min, (void *) max
#define _STR(f) #f, wpa_global_config_parse_str, OFFSET(f)
#define STR(f) _STR(f), NULL, NULL
#define STR_RANGE(f, min, max) _STR(f), (void *) min, (void *) max
#define BIN(f) #f, wpa_global_config_parse_bin, OFFSET(f), NULL, NULL
static const struct global_parse_data global_fields[] = {
#ifdef CONFIG_CTRL_IFACE
{ STR(ctrl_interface), 0 },
{ STR(ctrl_interface_group), 0 } /* deprecated */,
#endif /* CONFIG_CTRL_IFACE */
{ INT_RANGE(eapol_version, 1, 2), 0 },
{ INT(ap_scan), 0 },
{ INT(disable_scan_offload), 0 },
{ INT(fast_reauth), 0 },
{ STR(opensc_engine_path), 0 },
{ STR(pkcs11_engine_path), 0 },
{ STR(pkcs11_module_path), 0 },
{ STR(pcsc_reader), 0 },
{ STR(pcsc_pin), 0 },
{ STR(driver_param), 0 },
{ INT(dot11RSNAConfigPMKLifetime), 0 },
{ INT(dot11RSNAConfigPMKReauthThreshold), 0 },
{ INT(dot11RSNAConfigSATimeout), 0 },
#ifndef CONFIG_NO_CONFIG_WRITE
{ INT(update_config), 0 },
#endif /* CONFIG_NO_CONFIG_WRITE */
{ FUNC_NO_VAR(load_dynamic_eap), 0 },
#ifdef CONFIG_WPS
{ FUNC(uuid), CFG_CHANGED_UUID },
{ STR_RANGE(device_name, 0, 32), CFG_CHANGED_DEVICE_NAME },
{ STR_RANGE(manufacturer, 0, 64), CFG_CHANGED_WPS_STRING },
{ STR_RANGE(model_name, 0, 32), CFG_CHANGED_WPS_STRING },
{ STR_RANGE(model_number, 0, 32), CFG_CHANGED_WPS_STRING },
{ STR_RANGE(serial_number, 0, 32), CFG_CHANGED_WPS_STRING },
{ FUNC(device_type), CFG_CHANGED_DEVICE_TYPE },
{ FUNC(os_version), CFG_CHANGED_OS_VERSION },
{ STR(config_methods), CFG_CHANGED_CONFIG_METHODS },
{ INT_RANGE(wps_cred_processing, 0, 2), 0 },
{ FUNC(wps_vendor_ext_m1), CFG_CHANGED_VENDOR_EXTENSION },
#endif /* CONFIG_WPS */
#ifdef CONFIG_P2P
{ FUNC(sec_device_type), CFG_CHANGED_SEC_DEVICE_TYPE },
{ INT(p2p_listen_reg_class), 0 },
{ INT(p2p_listen_channel), 0 },
{ INT(p2p_oper_reg_class), 0 },
{ INT(p2p_oper_channel), 0 },
{ INT_RANGE(p2p_go_intent, 0, 15), 0 },
{ STR(p2p_ssid_postfix), CFG_CHANGED_P2P_SSID_POSTFIX },
{ INT_RANGE(persistent_reconnect, 0, 1), 0 },
{ INT_RANGE(p2p_intra_bss, 0, 1), CFG_CHANGED_P2P_INTRA_BSS },
{ INT(p2p_group_idle), 0 },
{ FUNC(p2p_pref_chan), CFG_CHANGED_P2P_PREF_CHAN },
{ INT(p2p_go_ht40), 0 },
{ INT(p2p_disabled), 0 },
{ INT(p2p_no_group_iface), 0 },
{ INT_RANGE(p2p_ignore_shared_freq, 0, 1), 0 },
#endif /* CONFIG_P2P */
{ FUNC(country), CFG_CHANGED_COUNTRY },
{ INT(bss_max_count), 0 },
{ INT(bss_expiration_age), 0 },
{ INT(bss_expiration_scan_count), 0 },
{ INT_RANGE(filter_ssids, 0, 1), 0 },
{ INT_RANGE(filter_rssi, -100, 0), 0 },
{ INT(max_num_sta), 0 },
{ INT_RANGE(disassoc_low_ack, 0, 1), 0 },
#ifdef CONFIG_HS20
{ INT_RANGE(hs20, 0, 1), 0 },
#endif /* CONFIG_HS20 */
{ INT_RANGE(interworking, 0, 1), 0 },
{ FUNC(hessid), 0 },
{ INT_RANGE(access_network_type, 0, 15), 0 },
{ INT_RANGE(pbc_in_m1, 0, 1), 0 },
{ STR(autoscan), 0 },
{ INT_RANGE(wps_nfc_dev_pw_id, 0x10, 0xffff),
CFG_CHANGED_NFC_PASSWORD_TOKEN },
{ BIN(wps_nfc_dh_pubkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
{ BIN(wps_nfc_dh_privkey), CFG_CHANGED_NFC_PASSWORD_TOKEN },
{ BIN(wps_nfc_dev_pw), CFG_CHANGED_NFC_PASSWORD_TOKEN },
{ STR(ext_password_backend), CFG_CHANGED_EXT_PW_BACKEND },
{ INT(p2p_go_max_inactivity), 0 },
{ INT_RANGE(auto_interworking, 0, 1), 0 },
{ INT(okc), 0 },
{ INT(pmf), 0 },
{ FUNC(sae_groups), 0 },
{ INT(dtim_period), 0 },
{ INT(beacon_int), 0 },
{ FUNC(ap_vendor_elements), 0 },
{ INT_RANGE(ignore_old_scan_res, 0, 1), 0 },
{ FUNC(freq_list), 0 },
{ INT(scan_cur_freq), 0 },
{ INT(sched_scan_interval), 0 },
{ INT(tdls_external_control), 0},
};
#undef FUNC
#undef _INT
#undef INT
#undef INT_RANGE
#undef _STR
#undef STR
#undef STR_RANGE
#undef BIN
#define NUM_GLOBAL_FIELDS (sizeof(global_fields) / sizeof(global_fields[0]))
int wpa_config_process_global(struct wpa_config *config, char *pos, int line)
{
size_t i;
int ret = 0;
for (i = 0; i < NUM_GLOBAL_FIELDS; i++) {
const struct global_parse_data *field = &global_fields[i];
size_t flen = os_strlen(field->name);
if (os_strncmp(pos, field->name, flen) != 0 ||
pos[flen] != '=')
continue;
if (field->parser(field, config, line, pos + flen + 1)) {
wpa_printf(MSG_ERROR, "Line %d: failed to "
"parse '%s'.", line, pos);
ret = -1;
}
if (field->changed_flag == CFG_CHANGED_NFC_PASSWORD_TOKEN)
config->wps_nfc_pw_from_config = 1;
config->changed_parameters |= field->changed_flag;
break;
}
if (i == NUM_GLOBAL_FIELDS) {
#ifdef CONFIG_AP
if (os_strncmp(pos, "wmm_ac_", 7) == 0) {
char *tmp = os_strchr(pos, '=');
if (tmp == NULL) {
if (line < 0)
return -1;
wpa_printf(MSG_ERROR, "Line %d: invalid line "
"'%s'", line, pos);
return -1;
}
*tmp++ = '\0';
if (hostapd_config_wmm_ac(config->wmm_ac_params, pos,
tmp)) {
wpa_printf(MSG_ERROR, "Line %d: invalid WMM "
"AC item", line);
return -1;
}
}
#endif /* CONFIG_AP */
if (line < 0)
return -1;
wpa_printf(MSG_ERROR, "Line %d: unknown global field '%s'.",
line, pos);
ret = -1;
}
return ret;
}