/* * WPA Supplicant / Configuration parser and common functions * Copyright (c) 2003-2012, Jouni Malinen * * 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 *dst; dst = (int *) (((u8 *) ssid) + (long) data->param1); *dst = atoi(value); 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 = os_malloc(len + 1); if (ssid->passphrase == NULL) return -1; os_memcpy(ssid->passphrase, value, len); ssid->passphrase[len] = '\0'; 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 = 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, "GCMP") == 0) val |= WPA_CIPHER_GCMP; 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_GCMP) { ret = os_snprintf(pos, end - pos, "%sGCMP", 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_GCMP | 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_GCMP | 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 */ static int * wpa_config_parse_freqs(const struct parse_data *data, struct wpa_ssid *ssid, int line, 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_freqs(data, ssid, line, 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_freqs(data, ssid, line, 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 */ #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) }, #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) }, #endif /* CONFIG_P2P */ #ifdef CONFIG_HT_OVERRIDES { INT_RANGE(disable_ht, 0, 1) }, { INT_RANGE(disable_ht40, -1, 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 */ { INT(ap_max_inactivity) }, { INT(dtim_period) }, }; #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) { 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 */ 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); 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); } /** * 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; 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_max_amsdu = DEFAULT_DISABLE_MAX_AMSDU; ssid->ampdu_factor = DEFAULT_AMPDU_FACTOR; ssid->ampdu_density = DEFAULT_AMPDU_DENSITY; #endif /* CONFIG_HT_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->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 *dst; dst = (int *) (((u8 *) config) + (long) data->param1); *dst = atoi(pos); 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_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; } #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 }, #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), 0 }, { BIN(wps_nfc_dh_pubkey), 0 }, { BIN(wps_nfc_dh_privkey), 0 }, { BIN(wps_nfc_dev_pw), 0 }, { 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 }, }; #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; } 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; }