1979 lines
47 KiB
C
1979 lines
47 KiB
C
/*
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* WPA Supplicant / Configuration parser and common functions
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* Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "wpa.h"
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#include "sha1.h"
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#include "eap_peer/eap.h"
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#include "config.h"
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#if !defined(CONFIG_CTRL_IFACE) && defined(CONFIG_NO_CONFIG_WRITE)
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#define NO_CONFIG_WRITE
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#endif
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/*
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* Structure for network configuration parsing. This data is used to implement
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* a generic parser for each network block variable. The table of configuration
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* variables is defined below in this file (ssid_fields[]).
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*/
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struct parse_data {
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/* Configuration variable name */
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char *name;
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/* Parser function for this variable */
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int (*parser)(const struct parse_data *data, struct wpa_ssid *ssid,
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int line, const char *value);
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#ifndef NO_CONFIG_WRITE
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/* Writer function (i.e., to get the variable in text format from
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* internal presentation). */
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char * (*writer)(const struct parse_data *data, struct wpa_ssid *ssid);
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#endif /* NO_CONFIG_WRITE */
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/* Variable specific parameters for the parser. */
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void *param1, *param2, *param3, *param4;
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/* 0 = this variable can be included in debug output and ctrl_iface
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* 1 = this variable contains key/private data and it must not be
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* included in debug output unless explicitly requested. In
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* addition, this variable will not be readable through the
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* ctrl_iface.
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*/
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int key_data;
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};
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static char * wpa_config_parse_string(const char *value, size_t *len)
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{
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if (*value == '"') {
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const char *pos;
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char *str;
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value++;
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pos = os_strrchr(value, '"');
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if (pos == NULL || pos[1] != '\0')
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return NULL;
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*len = pos - value;
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str = os_malloc(*len + 1);
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if (str == NULL)
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return NULL;
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os_memcpy(str, value, *len);
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str[*len] = '\0';
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return str;
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} else {
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u8 *str;
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size_t tlen, hlen = os_strlen(value);
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if (hlen & 1)
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return NULL;
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tlen = hlen / 2;
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str = os_malloc(tlen + 1);
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if (str == NULL)
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return NULL;
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if (hexstr2bin(value, str, tlen)) {
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os_free(str);
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return NULL;
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}
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str[tlen] = '\0';
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*len = tlen;
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return (char *) str;
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}
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}
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static int wpa_config_parse_str(const struct parse_data *data,
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struct wpa_ssid *ssid,
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int line, const char *value)
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{
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size_t res_len, *dst_len;
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char **dst, *tmp;
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if (os_strcmp(value, "NULL") == 0) {
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wpa_printf(MSG_DEBUG, "Unset configuration string '%s'",
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data->name);
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tmp = NULL;
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res_len = 0;
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goto set;
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}
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tmp = wpa_config_parse_string(value, &res_len);
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if (tmp == NULL) {
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wpa_printf(MSG_ERROR, "Line %d: failed to parse %s '%s'.",
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line, data->name,
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data->key_data ? "[KEY DATA REMOVED]" : value);
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return -1;
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}
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if (data->key_data) {
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wpa_hexdump_ascii_key(MSG_MSGDUMP, data->name,
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(u8 *) tmp, res_len);
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} else {
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wpa_hexdump_ascii(MSG_MSGDUMP, data->name,
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(u8 *) tmp, res_len);
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}
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if (data->param3 && res_len < (size_t) data->param3) {
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wpa_printf(MSG_ERROR, "Line %d: too short %s (len=%lu "
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"min_len=%ld)", line, data->name,
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(unsigned long) res_len, (long) data->param3);
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os_free(tmp);
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return -1;
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}
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if (data->param4 && res_len > (size_t) data->param4) {
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wpa_printf(MSG_ERROR, "Line %d: too long %s (len=%lu "
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"max_len=%ld)", line, data->name,
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(unsigned long) res_len, (long) data->param4);
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os_free(tmp);
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return -1;
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}
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set:
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dst = (char **) (((u8 *) ssid) + (long) data->param1);
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dst_len = (size_t *) (((u8 *) ssid) + (long) data->param2);
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os_free(*dst);
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*dst = tmp;
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if (data->param2)
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*dst_len = res_len;
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return 0;
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}
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#ifndef NO_CONFIG_WRITE
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static int is_hex(const u8 *data, size_t len)
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{
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size_t i;
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for (i = 0; i < len; i++) {
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if (data[i] < 32 || data[i] >= 127)
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return 1;
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}
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return 0;
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}
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static char * wpa_config_write_string_ascii(const u8 *value, size_t len)
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{
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char *buf;
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buf = os_malloc(len + 3);
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if (buf == NULL)
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return NULL;
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buf[0] = '"';
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os_memcpy(buf + 1, value, len);
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buf[len + 1] = '"';
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buf[len + 2] = '\0';
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return buf;
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}
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static char * wpa_config_write_string_hex(const u8 *value, size_t len)
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{
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char *buf;
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buf = os_zalloc(2 * len + 1);
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if (buf == NULL)
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return NULL;
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wpa_snprintf_hex(buf, 2 * len + 1, value, len);
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return buf;
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}
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static char * wpa_config_write_string(const u8 *value, size_t len)
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{
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if (value == NULL)
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return NULL;
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if (is_hex(value, len))
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return wpa_config_write_string_hex(value, len);
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else
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return wpa_config_write_string_ascii(value, len);
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}
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static char * wpa_config_write_str(const struct parse_data *data,
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struct wpa_ssid *ssid)
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{
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size_t len;
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char **src;
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src = (char **) (((u8 *) ssid) + (long) data->param1);
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if (*src == NULL)
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return NULL;
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if (data->param2)
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len = *((size_t *) (((u8 *) ssid) + (long) data->param2));
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else
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len = os_strlen(*src);
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return wpa_config_write_string((const u8 *) *src, len);
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}
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#endif /* NO_CONFIG_WRITE */
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static int wpa_config_parse_int(const struct parse_data *data,
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struct wpa_ssid *ssid,
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int line, const char *value)
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{
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int *dst;
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dst = (int *) (((u8 *) ssid) + (long) data->param1);
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*dst = atoi(value);
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wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
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if (data->param3 && *dst < (long) data->param3) {
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wpa_printf(MSG_ERROR, "Line %d: too small %s (value=%d "
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"min_value=%ld)", line, data->name, *dst,
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(long) data->param3);
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*dst = (long) data->param3;
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return -1;
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}
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if (data->param4 && *dst > (long) data->param4) {
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wpa_printf(MSG_ERROR, "Line %d: too large %s (value=%d "
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"max_value=%ld)", line, data->name, *dst,
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(long) data->param4);
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*dst = (long) data->param4;
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return -1;
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}
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return 0;
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}
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#ifndef NO_CONFIG_WRITE
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static char * wpa_config_write_int(const struct parse_data *data,
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struct wpa_ssid *ssid)
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{
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int *src, res;
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char *value;
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src = (int *) (((u8 *) ssid) + (long) data->param1);
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value = os_malloc(20);
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if (value == NULL)
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return NULL;
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res = os_snprintf(value, 20, "%d", *src);
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if (res < 0 || res >= 20) {
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os_free(value);
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return NULL;
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}
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value[20 - 1] = '\0';
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return value;
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}
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#endif /* NO_CONFIG_WRITE */
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static int wpa_config_parse_bssid(const struct parse_data *data,
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struct wpa_ssid *ssid, int line,
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const char *value)
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{
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if (hwaddr_aton(value, ssid->bssid)) {
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wpa_printf(MSG_ERROR, "Line %d: Invalid BSSID '%s'.",
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line, value);
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return -1;
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}
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ssid->bssid_set = 1;
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wpa_hexdump(MSG_MSGDUMP, "BSSID", ssid->bssid, ETH_ALEN);
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return 0;
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}
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#ifndef NO_CONFIG_WRITE
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static char * wpa_config_write_bssid(const struct parse_data *data,
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struct wpa_ssid *ssid)
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{
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char *value;
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int res;
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if (!ssid->bssid_set)
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return NULL;
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value = os_malloc(20);
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if (value == NULL)
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return NULL;
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res = os_snprintf(value, 20, MACSTR, MAC2STR(ssid->bssid));
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if (res < 0 || res >= 20) {
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os_free(value);
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return NULL;
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}
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value[20 - 1] = '\0';
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return value;
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}
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#endif /* NO_CONFIG_WRITE */
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static int wpa_config_parse_psk(const struct parse_data *data,
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struct wpa_ssid *ssid, int line,
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const char *value)
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{
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if (*value == '"') {
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#ifndef CONFIG_NO_PBKDF2
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const char *pos;
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size_t len;
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value++;
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pos = os_strrchr(value, '"');
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if (pos)
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len = pos - value;
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else
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len = os_strlen(value);
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if (len < 8 || len > 63) {
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wpa_printf(MSG_ERROR, "Line %d: Invalid passphrase "
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"length %lu (expected: 8..63) '%s'.",
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line, (unsigned long) len, value);
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return -1;
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}
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wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)",
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(u8 *) value, len);
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if (ssid->passphrase && os_strlen(ssid->passphrase) == len &&
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os_memcmp(ssid->passphrase, value, len) == 0)
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return 0;
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ssid->psk_set = 0;
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os_free(ssid->passphrase);
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ssid->passphrase = os_malloc(len + 1);
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if (ssid->passphrase == NULL)
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return -1;
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os_memcpy(ssid->passphrase, value, len);
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ssid->passphrase[len] = '\0';
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return 0;
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#else /* CONFIG_NO_PBKDF2 */
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wpa_printf(MSG_ERROR, "Line %d: ASCII passphrase not "
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"supported.", line);
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return -1;
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#endif /* CONFIG_NO_PBKDF2 */
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}
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if (hexstr2bin(value, ssid->psk, PMK_LEN) ||
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value[PMK_LEN * 2] != '\0') {
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wpa_printf(MSG_ERROR, "Line %d: Invalid PSK '%s'.",
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line, value);
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return -1;
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}
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os_free(ssid->passphrase);
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ssid->passphrase = NULL;
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ssid->psk_set = 1;
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wpa_hexdump_key(MSG_MSGDUMP, "PSK", ssid->psk, PMK_LEN);
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return 0;
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}
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#ifndef NO_CONFIG_WRITE
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static char * wpa_config_write_psk(const struct parse_data *data,
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struct wpa_ssid *ssid)
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{
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if (ssid->passphrase)
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return wpa_config_write_string_ascii(
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(const u8 *) ssid->passphrase,
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os_strlen(ssid->passphrase));
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if (ssid->psk_set)
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return wpa_config_write_string_hex(ssid->psk, PMK_LEN);
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return NULL;
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}
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#endif /* NO_CONFIG_WRITE */
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static int wpa_config_parse_proto(const struct parse_data *data,
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struct wpa_ssid *ssid, int line,
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const char *value)
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{
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int val = 0, last, errors = 0;
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char *start, *end, *buf;
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buf = os_strdup(value);
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if (buf == NULL)
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return -1;
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start = buf;
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while (*start != '\0') {
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while (*start == ' ' || *start == '\t')
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start++;
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if (*start == '\0')
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break;
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end = start;
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while (*end != ' ' && *end != '\t' && *end != '\0')
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end++;
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last = *end == '\0';
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*end = '\0';
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if (os_strcmp(start, "WPA") == 0)
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val |= WPA_PROTO_WPA;
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else if (os_strcmp(start, "RSN") == 0 ||
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os_strcmp(start, "WPA2") == 0)
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val |= WPA_PROTO_RSN;
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else {
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wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
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line, start);
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errors++;
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}
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if (last)
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break;
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start = end + 1;
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}
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os_free(buf);
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if (val == 0) {
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wpa_printf(MSG_ERROR,
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"Line %d: no proto values configured.", line);
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errors++;
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}
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wpa_printf(MSG_MSGDUMP, "proto: 0x%x", val);
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ssid->proto = val;
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return errors ? -1 : 0;
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}
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#ifndef NO_CONFIG_WRITE
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static char * wpa_config_write_proto(const struct parse_data *data,
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struct wpa_ssid *ssid)
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{
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int first = 1, ret;
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char *buf, *pos, *end;
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pos = buf = os_zalloc(10);
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if (buf == NULL)
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return NULL;
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end = buf + 10;
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if (ssid->proto & WPA_PROTO_WPA) {
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ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
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if (ret < 0 || ret >= end - pos)
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return buf;
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pos += ret;
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first = 0;
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}
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if (ssid->proto & WPA_PROTO_RSN) {
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ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
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if (ret < 0 || ret >= end - pos)
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return buf;
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pos += ret;
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first = 0;
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}
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return buf;
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}
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#endif /* NO_CONFIG_WRITE */
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static int wpa_config_parse_key_mgmt(const struct parse_data *data,
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struct wpa_ssid *ssid, int line,
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const char *value)
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{
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int val = 0, last, errors = 0;
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char *start, *end, *buf;
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buf = os_strdup(value);
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if (buf == NULL)
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return -1;
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start = buf;
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while (*start != '\0') {
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while (*start == ' ' || *start == '\t')
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start++;
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if (*start == '\0')
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break;
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end = start;
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while (*end != ' ' && *end != '\t' && *end != '\0')
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end++;
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last = *end == '\0';
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*end = '\0';
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if (os_strcmp(start, "WPA-PSK") == 0)
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val |= WPA_KEY_MGMT_PSK;
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else if (os_strcmp(start, "WPA-EAP") == 0)
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val |= WPA_KEY_MGMT_IEEE8021X;
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else if (os_strcmp(start, "IEEE8021X") == 0)
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val |= WPA_KEY_MGMT_IEEE8021X_NO_WPA;
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else if (os_strcmp(start, "NONE") == 0)
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val |= WPA_KEY_MGMT_NONE;
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else if (os_strcmp(start, "WPA-NONE") == 0)
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val |= WPA_KEY_MGMT_WPA_NONE;
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#ifdef CONFIG_IEEE80211R
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else if (os_strcmp(start, "FT-PSK") == 0)
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val |= WPA_KEY_MGMT_FT_PSK;
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else if (os_strcmp(start, "FT-EAP") == 0)
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val |= WPA_KEY_MGMT_FT_IEEE8021X;
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#endif /* CONFIG_IEEE80211R */
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#ifdef CONFIG_IEEE80211W
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else if (os_strcmp(start, "WPA-PSK-SHA256") == 0)
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val |= WPA_KEY_MGMT_PSK_SHA256;
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else if (os_strcmp(start, "WPA-EAP-SHA256") == 0)
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val |= WPA_KEY_MGMT_IEEE8021X_SHA256;
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#endif /* CONFIG_IEEE80211W */
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#ifdef CONFIG_WPS
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else if (os_strcmp(start, "WPS") == 0)
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val |= WPA_KEY_MGMT_WPS;
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#endif /* CONFIG_WPS */
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else {
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wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
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line, start);
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errors++;
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}
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|
|
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 = 0, last;
|
|
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, "CCMP") == 0)
|
|
val |= WPA_CIPHER_CCMP;
|
|
else if (os_strcmp(start, "TKIP") == 0)
|
|
val |= WPA_CIPHER_TKIP;
|
|
else if (os_strcmp(start, "WEP104") == 0)
|
|
val |= WPA_CIPHER_WEP104;
|
|
else if (os_strcmp(start, "WEP40") == 0)
|
|
val |= WPA_CIPHER_WEP40;
|
|
else if (os_strcmp(start, "NONE") == 0)
|
|
val |= WPA_CIPHER_NONE;
|
|
else {
|
|
wpa_printf(MSG_ERROR, "Line %d: invalid cipher '%s'.",
|
|
line, start);
|
|
os_free(buf);
|
|
return -1;
|
|
}
|
|
|
|
if (last)
|
|
break;
|
|
start = end + 1;
|
|
}
|
|
os_free(buf);
|
|
|
|
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, *pos, *end;
|
|
int ret;
|
|
|
|
pos = buf = os_zalloc(50);
|
|
if (buf == NULL)
|
|
return NULL;
|
|
end = buf + 50;
|
|
|
|
if (cipher & WPA_CIPHER_CCMP) {
|
|
ret = os_snprintf(pos, end - pos, "%sCCMP",
|
|
pos == buf ? "" : " ");
|
|
if (ret < 0 || ret >= end - pos) {
|
|
end[-1] = '\0';
|
|
return buf;
|
|
}
|
|
pos += ret;
|
|
}
|
|
|
|
if (cipher & WPA_CIPHER_TKIP) {
|
|
ret = os_snprintf(pos, end - pos, "%sTKIP",
|
|
pos == buf ? "" : " ");
|
|
if (ret < 0 || ret >= end - pos) {
|
|
end[-1] = '\0';
|
|
return buf;
|
|
}
|
|
pos += ret;
|
|
}
|
|
|
|
if (cipher & WPA_CIPHER_WEP104) {
|
|
ret = os_snprintf(pos, end - pos, "%sWEP104",
|
|
pos == buf ? "" : " ");
|
|
if (ret < 0 || ret >= end - pos) {
|
|
end[-1] = '\0';
|
|
return buf;
|
|
}
|
|
pos += ret;
|
|
}
|
|
|
|
if (cipher & WPA_CIPHER_WEP40) {
|
|
ret = os_snprintf(pos, end - pos, "%sWEP40",
|
|
pos == buf ? "" : " ");
|
|
if (ret < 0 || ret >= end - pos) {
|
|
end[-1] = '\0';
|
|
return buf;
|
|
}
|
|
pos += ret;
|
|
}
|
|
|
|
if (cipher & WPA_CIPHER_NONE) {
|
|
ret = os_snprintf(pos, end - pos, "%sNONE",
|
|
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_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_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_NONE)) {
|
|
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_CIPHER_CCMP | WPA_CIPHER_TKIP | WPA_CIPHER_WEP104 |
|
|
WPA_CIPHER_WEP40)) {
|
|
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 */
|
|
|
|
|
|
#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(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(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));
|
|
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;
|
|
}
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
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;
|
|
|
|
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;
|
|
}
|
|
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 */
|
|
|
|
|
|
/* 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) },
|
|
{ FUNC(pairwise) },
|
|
{ FUNC(group) },
|
|
{ FUNC(auth_alg) },
|
|
#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) },
|
|
#endif /* IEEE8021X_EAPOL */
|
|
{ INT_RANGE(mode, 0, 1) },
|
|
{ INT_RANGE(proactive_key_caching, 0, 1) },
|
|
{ INT_RANGE(disabled, 0, 1) },
|
|
{ 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, 10000) },
|
|
{ INT(wpa_ptk_rekey) }
|
|
};
|
|
|
|
#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(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)
|
|
break;
|
|
}
|
|
|
|
os_memmove(&nlist[prio + 1], &nlist[prio],
|
|
(config->num_prio - prio) * sizeof(struct wpa_ssid *));
|
|
|
|
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.
|
|
*/
|
|
static 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)
|
|
{
|
|
os_free(ssid->ssid);
|
|
os_free(ssid->passphrase);
|
|
#ifdef IEEE8021X_EAPOL
|
|
eap_peer_config_free(&ssid->eap);
|
|
#endif /* IEEE8021X_EAPOL */
|
|
os_free(ssid->id_str);
|
|
os_free(ssid);
|
|
}
|
|
|
|
|
|
/**
|
|
* 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;
|
|
ssid = config->ssid;
|
|
while (ssid) {
|
|
prev = ssid;
|
|
ssid = ssid->next;
|
|
wpa_config_free_ssid(prev);
|
|
}
|
|
|
|
#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 */
|
|
|
|
os_free(config->ctrl_interface);
|
|
os_free(config->ctrl_interface_group);
|
|
#ifdef EAP_TLS_OPENSSL
|
|
os_free(config->opensc_engine_path);
|
|
os_free(config->pkcs11_engine_path);
|
|
os_free(config->pkcs11_module_path);
|
|
#endif /* EAP_TLS_OPENSSL */
|
|
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->device_type);
|
|
os_free(config->pssid);
|
|
os_free(config);
|
|
}
|
|
|
|
|
|
/**
|
|
* 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;
|
|
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;
|
|
#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 */
|
|
}
|
|
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
|
|
#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,
|
|
(char *) 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 */
|
|
}
|
|
|
|
|
|
#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;
|
|
|
|
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;
|
|
|
|
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 */
|