EXT PW: Allow Interwork cred block to use external storage for password

Signed-hostap: Jouni Malinen <j@w1.fi>

wpa_supplicant/config.c

@@ -2326,6 +2326,14 @@ int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
 		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 "
@@ -2348,6 +2356,7 @@ int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
 	if (os_strcmp(var, "password") == 0) {
 		os_free(cred->password);
 		cred->password = val;
+		cred->ext_password = 0;
 		return 0;
 	}
 

wpa_supplicant/config.h

@@ -80,6 +80,11 @@ struct wpa_cred {
 	 */
 	char *password;
 
+	/**
+	 * ext_password - Whether password is a name for external storage
+	 */
+	int ext_password;
+
 	/**
 	 * ca_cert - CA certificate for Interworking network selection
 	 */

wpa_supplicant/interworking.c

@@ -894,9 +894,15 @@ static int interworking_set_eap_params(struct wpa_ssid *ssid,
 	    wpa_config_set_quoted(ssid, "identity", cred->username) < 0)
 		return -1;
 
-	if (cred->password && cred->password[0] &&
-	    wpa_config_set_quoted(ssid, "password", cred->password) < 0)
-		return -1;
+	if (cred->password && cred->password[0]) {
+		if (cred->ext_password &&
+		    wpa_config_set(ssid, "password", cred->password, 0) < 0)
+			return -1;
+		if (!cred->ext_password &&
+		    wpa_config_set_quoted(ssid, "password", cred->password) <
+		    0)
+			return -1;
+	}
 
 	if (cred->client_cert && cred->client_cert[0] &&
 	    wpa_config_set_quoted(ssid, "client_cert", cred->client_cert) < 0)