--- /dev/null
+/*
+ * hostapd / EAP user database
+ * Copyright (c) 2012, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+#ifdef CONFIG_SQLITE
+#include <sqlite3.h>
+#endif /* CONFIG_SQLITE */
+
+#include "common.h"
+#include "eap_common/eap_wsc_common.h"
+#include "eap_server/eap_methods.h"
+#include "eap_server/eap.h"
+#include "ap_config.h"
+#include "hostapd.h"
+
+#ifdef CONFIG_SQLITE
+
+static void set_user_methods(struct hostapd_eap_user *user, const char *methods)
+{
+ char *buf, *start;
+ int num_methods;
+
+ buf = os_strdup(methods);
+ if (buf == NULL)
+ return;
+
+ os_memset(&user->methods, 0, sizeof(user->methods));
+ num_methods = 0;
+ start = buf;
+ while (*start) {
+ char *pos3 = os_strchr(start, ',');
+ if (pos3)
+ *pos3++ = '\0';
+ user->methods[num_methods].method =
+ eap_server_get_type(start,
+ &user->methods[num_methods].vendor);
+ if (user->methods[num_methods].vendor == EAP_VENDOR_IETF &&
+ user->methods[num_methods].method == EAP_TYPE_NONE) {
+ if (os_strcmp(start, "TTLS-PAP") == 0) {
+ user->ttls_auth |= EAP_TTLS_AUTH_PAP;
+ goto skip_eap;
+ }
+ if (os_strcmp(start, "TTLS-CHAP") == 0) {
+ user->ttls_auth |= EAP_TTLS_AUTH_CHAP;
+ goto skip_eap;
+ }
+ if (os_strcmp(start, "TTLS-MSCHAP") == 0) {
+ user->ttls_auth |= EAP_TTLS_AUTH_MSCHAP;
+ goto skip_eap;
+ }
+ if (os_strcmp(start, "TTLS-MSCHAPV2") == 0) {
+ user->ttls_auth |= EAP_TTLS_AUTH_MSCHAPV2;
+ goto skip_eap;
+ }
+ wpa_printf(MSG_INFO, "DB: Unsupported EAP type '%s'",
+ start);
+ os_free(buf);
+ return;
+ }
+
+ num_methods++;
+ if (num_methods >= EAP_MAX_METHODS)
+ break;
+ skip_eap:
+ if (pos3 == NULL)
+ break;
+ start = pos3;
+ }
+
+ os_free(buf);
+}
+
+
+static int get_user_cb(void *ctx, int argc, char *argv[], char *col[])
+{
+ struct hostapd_eap_user *user = ctx;
+ int i;
+
+ for (i = 0; i < argc; i++) {
+ if (os_strcmp(col[i], "password") == 0 && argv[i]) {
+ bin_clear_free(user->password, user->password_len);
+ user->password_len = os_strlen(argv[i]);
+ user->password = (u8 *) os_strdup(argv[i]);
+ user->next = (void *) 1;
+ } else if (os_strcmp(col[i], "methods") == 0 && argv[i]) {
+ set_user_methods(user, argv[i]);
+ } else if (os_strcmp(col[i], "remediation") == 0 && argv[i]) {
+ user->remediation = strlen(argv[i]) > 0;
+ }
+ }
+
+ return 0;
+}
+
+
+static int get_wildcard_cb(void *ctx, int argc, char *argv[], char *col[])
+{
+ struct hostapd_eap_user *user = ctx;
+ int i, id = -1, methods = -1;
+ size_t len;
+
+ for (i = 0; i < argc; i++) {
+ if (os_strcmp(col[i], "identity") == 0 && argv[i])
+ id = i;
+ else if (os_strcmp(col[i], "methods") == 0 && argv[i])
+ methods = i;
+ }
+
+ if (id < 0 || methods < 0)
+ return 0;
+
+ len = os_strlen(argv[id]);
+ if (len <= user->identity_len &&
+ os_memcmp(argv[id], user->identity, len) == 0 &&
+ (user->password == NULL || len > user->password_len)) {
+ bin_clear_free(user->password, user->password_len);
+ user->password_len = os_strlen(argv[id]);
+ user->password = (u8 *) os_strdup(argv[id]);
+ user->next = (void *) 1;
+ set_user_methods(user, argv[methods]);
+ }
+
+ return 0;
+}
+
+
+static const struct hostapd_eap_user *
+eap_user_sqlite_get(struct hostapd_data *hapd, const u8 *identity,
+ size_t identity_len, int phase2)
+{
+ sqlite3 *db;
+ struct hostapd_eap_user *user = NULL;
+ char id_str[256], cmd[300];
+ size_t i;
+
+ if (identity_len >= sizeof(id_str)) {
+ wpa_printf(MSG_DEBUG, "%s: identity len too big: %d >= %d",
+ __func__, (int) identity_len,
+ (int) (sizeof(id_str)));
+ return NULL;
+ }
+ os_memcpy(id_str, identity, identity_len);
+ id_str[identity_len] = '\0';
+ for (i = 0; i < identity_len; i++) {
+ if (id_str[i] >= 'a' && id_str[i] <= 'z')
+ continue;
+ if (id_str[i] >= 'A' && id_str[i] <= 'Z')
+ continue;
+ if (id_str[i] >= '0' && id_str[i] <= '9')
+ continue;
+ if (id_str[i] == '-' || id_str[i] == '_' || id_str[i] == '.' ||
+ id_str[i] == ',' || id_str[i] == '@' || id_str[i] == '\\' ||
+ id_str[i] == '!' || id_str[i] == '#' || id_str[i] == '%' ||
+ id_str[i] == '=' || id_str[i] == ' ')
+ continue;
+ wpa_printf(MSG_INFO, "DB: Unsupported character in identity");
+ return NULL;
+ }
+
+ bin_clear_free(hapd->tmp_eap_user.identity,
+ hapd->tmp_eap_user.identity_len);
+ bin_clear_free(hapd->tmp_eap_user.password,
+ hapd->tmp_eap_user.password_len);
+ os_memset(&hapd->tmp_eap_user, 0, sizeof(hapd->tmp_eap_user));
+ hapd->tmp_eap_user.phase2 = phase2;
+ hapd->tmp_eap_user.identity = os_zalloc(identity_len + 1);
+ if (hapd->tmp_eap_user.identity == NULL)
+ return NULL;
+ os_memcpy(hapd->tmp_eap_user.identity, identity, identity_len);
+
+ if (sqlite3_open(hapd->conf->eap_user_sqlite, &db)) {
+ wpa_printf(MSG_INFO, "DB: Failed to open database %s: %s",
+ hapd->conf->eap_user_sqlite, sqlite3_errmsg(db));
+ sqlite3_close(db);
+ return NULL;
+ }
+
+ os_snprintf(cmd, sizeof(cmd),
+ "SELECT * FROM users WHERE identity='%s' AND phase2=%d;",
+ id_str, phase2);
+ wpa_printf(MSG_DEBUG, "DB: %s", cmd);
+ if (sqlite3_exec(db, cmd, get_user_cb, &hapd->tmp_eap_user, NULL) !=
+ SQLITE_OK) {
+ wpa_printf(MSG_DEBUG,
+ "DB: Failed to complete SQL operation: %s db: %s",
+ sqlite3_errmsg(db), hapd->conf->eap_user_sqlite);
+ } else if (hapd->tmp_eap_user.next)
+ user = &hapd->tmp_eap_user;
+
+ if (user == NULL && !phase2) {
+ os_snprintf(cmd, sizeof(cmd),
+ "SELECT identity,methods FROM wildcards;");
+ wpa_printf(MSG_DEBUG, "DB: %s", cmd);
+ if (sqlite3_exec(db, cmd, get_wildcard_cb, &hapd->tmp_eap_user,
+ NULL) != SQLITE_OK) {
+ wpa_printf(MSG_DEBUG,
+ "DB: Failed to complete SQL operation: %s db: %s",
+ sqlite3_errmsg(db),
+ hapd->conf->eap_user_sqlite);
+ } else if (hapd->tmp_eap_user.next) {
+ user = &hapd->tmp_eap_user;
+ os_free(user->identity);
+ user->identity = user->password;
+ user->identity_len = user->password_len;
+ user->password = NULL;
+ user->password_len = 0;
+ }
+ }
+
+ sqlite3_close(db);
+
+ return user;
+}
+
+#endif /* CONFIG_SQLITE */
+
+
+const struct hostapd_eap_user *
+hostapd_get_eap_user(struct hostapd_data *hapd, const u8 *identity,
+ size_t identity_len, int phase2)
+{
+ const struct hostapd_bss_config *conf = hapd->conf;
+ struct hostapd_eap_user *user = conf->eap_user;
+
+#ifdef CONFIG_WPS
+ if (conf->wps_state && identity_len == WSC_ID_ENROLLEE_LEN &&
+ os_memcmp(identity, WSC_ID_ENROLLEE, WSC_ID_ENROLLEE_LEN) == 0) {
+ static struct hostapd_eap_user wsc_enrollee;
+ os_memset(&wsc_enrollee, 0, sizeof(wsc_enrollee));
+ wsc_enrollee.methods[0].method = eap_server_get_type(
+ "WSC", &wsc_enrollee.methods[0].vendor);
+ return &wsc_enrollee;
+ }
+
+ if (conf->wps_state && identity_len == WSC_ID_REGISTRAR_LEN &&
+ os_memcmp(identity, WSC_ID_REGISTRAR, WSC_ID_REGISTRAR_LEN) == 0) {
+ static struct hostapd_eap_user wsc_registrar;
+ os_memset(&wsc_registrar, 0, sizeof(wsc_registrar));
+ wsc_registrar.methods[0].method = eap_server_get_type(
+ "WSC", &wsc_registrar.methods[0].vendor);
+ wsc_registrar.password = (u8 *) conf->ap_pin;
+ wsc_registrar.password_len = conf->ap_pin ?
+ os_strlen(conf->ap_pin) : 0;
+ return &wsc_registrar;
+ }
+#endif /* CONFIG_WPS */
+
+ while (user) {
+ if (!phase2 && user->identity == NULL) {
+ /* Wildcard match */
+ break;
+ }
+
+ if (user->phase2 == !!phase2 && user->wildcard_prefix &&
+ identity_len >= user->identity_len &&
+ os_memcmp(user->identity, identity, user->identity_len) ==
+ 0) {
+ /* Wildcard prefix match */
+ break;
+ }
+
+ if (user->phase2 == !!phase2 &&
+ user->identity_len == identity_len &&
+ os_memcmp(user->identity, identity, identity_len) == 0)
+ break;
+ user = user->next;
+ }
+
+#ifdef CONFIG_SQLITE
+ if (user == NULL && conf->eap_user_sqlite) {
+ return eap_user_sqlite_get(hapd, identity, identity_len,
+ phase2);
+ }
+#endif /* CONFIG_SQLITE */
+
+ return user;
+}
projects / mech_eap.git / blobdiff