normalized input of parseStringOrThrowError method

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres
 to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [7.0.6] - 2023-10-10
+
+- normalized input in few methods of InputParser - https://github.com/supertokens/supertokens-core/issues/594
+
 ## [7.0.5] - 2023-10-13
 
 - Adds postgres testing to the CICD
@@ -2513,4 +2517,4 @@ to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 ### Changed
 
 - Allow for an unlimited number of SuperTokens instances in production mode
-- License changes to reflect the above
+- License changes to reflect the above

build.gradle

@@ -19,8 +19,7 @@ compileTestJava { options.encoding = "UTF-8" }
 //    }
 //}
 
-version = "7.0.5"
-
+version = "7.0.6"
 
 repositories {
     mavenCentral()

src/main/java/io/supertokens/webserver/InputParser.java

@@ -29,6 +29,8 @@
 import java.util.Arrays;
 
 public class InputParser {
+    private static final String EMAIL_REGEX = "^(([^<>()\\[\\]\\\\.,;:\\s@\"]+(\\.[^<>()\\[\\]\\\\.,;:\\s@\"]+)*)|(\".+\"))@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\])|(([a-zA-Z\\-0-9]+\\.)+[a-zA-Z]{2,}))$";
+
     public static JsonObject parseJsonObjectOrThrowError(HttpServletRequest request)
             throws ServletException, IOException {
         StringBuilder sb = new StringBuilder();
@@ -52,23 +54,34 @@ public static String getQueryParamOrThrowError(HttpServletRequest request, Strin
             throw new ServletException(
                     new WebserverAPI.BadRequestException("Field name '" + fieldName + "' is missing in GET request"));
         }
+
+        value = value.trim();
+        if (value.matches(EMAIL_REGEX)) {
+            value = value.toLowerCase();
+        }
         return value;
     }
 
     public static String[] getCommaSeparatedStringArrayQueryParamOrThrowError(HttpServletRequest request,
             String fieldName, boolean nullable) throws ServletException {
-        String[] value = null;
+        String[] values = null;
         // expect val1,val2,val3 and so on...
         String queryParamValue = getQueryParamOrThrowError(request, fieldName, nullable);
         if (queryParamValue != null) {
-            value = Arrays.stream(queryParamValue.trim().split(",")).map(String::trim).filter(s -> !s.equals(""))
+            values = Arrays.stream(queryParamValue.trim().split(",")).map(String::trim).filter(s -> !s.equals(""))
                     .toArray(String[]::new);
         }
-        if (!nullable && value == null) {
+        if (!nullable && values == null) {
             throw new ServletException(
                     new WebserverAPI.BadRequestException("Field name '" + fieldName + "' is missing in GET request"));
         }
-        return value;
+
+        return Arrays.stream(values).map(value -> {
+            if (value.matches(EMAIL_REGEX)) {
+                return value.toLowerCase();
+            }
+            return value;
+        }).toArray(String[]::new);
     }
 
     public static Integer getIntQueryParamOrThrowError(HttpServletRequest request, String fieldName, boolean nullable)
@@ -137,7 +150,12 @@ public static String parseStringOrThrowError(JsonObject element, String fieldNam
             if (!stringified.contains("\"")) {
                 throw new Exception();
             }
-            return ((JsonObject) element).get(fieldName).getAsString();
+
+            String s = element.get(fieldName).getAsString().trim();
+            if (s.matches(EMAIL_REGEX)) {
+                s = s.toLowerCase();
+            }
+            return s;
         } catch (Exception e) {
             throw new ServletException(
                     new WebserverAPI.BadRequestException("Field name '" + fieldName + "' is invalid in JSON input"));

src/test/java/io/supertokens/test/InputParserTest.java

@@ -21,6 +21,7 @@
 import io.supertokens.pluginInterface.STORAGE_TYPE;
 import io.supertokens.storageLayer.StorageLayer;
 import io.supertokens.webserver.InputParser;
+import jakarta.servlet.http.HttpServletRequest;
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.Rule;
@@ -30,6 +31,7 @@
 import jakarta.servlet.ServletException;
 
 import static org.junit.Assert.*;
+import static org.mockito.Mockito.*;
 
 public class InputParserTest {
     @Rule
@@ -104,4 +106,51 @@ public void testParseStringOrJSONNullOrThrowError() throws Exception {
         process.kill();
         assertNotNull(process.checkOrWaitForEvent(ProcessState.PROCESS_STATE.STOPPED));
     }
+
+    @Test
+    public void testParseStringOrThrowError() throws Exception {
+        String[] args = { "../" };
+
+        TestingProcessManager.TestingProcess process = TestingProcessManager.start(args);
+        assertNotNull(process.checkOrWaitForEvent(ProcessState.PROCESS_STATE.STARTED));
+
+        JsonObject json = new JsonObject();
+        json.addProperty("untrimed mixedcase email", "[email protected]       ");
+        json.addProperty("email", "[email protected]");
+        json.addProperty("untrimed mixedcase text", "   TexT    ");
+        json.addProperty("mixedcase text", "TeXt");
+
+        assertEquals(InputParser.parseStringOrThrowError(json, "untrimed mixedcase email", false), "[email protected]");
+        assertEquals(InputParser.parseStringOrThrowError(json, "email", false), "[email protected]");
+        assertEquals(InputParser.parseStringOrThrowError(json, "untrimed mixedcase text", false), "TexT");
+        assertEquals(InputParser.parseStringOrThrowError(json, "mixedcase text", false), "TeXt");
+        assertNull(InputParser.parseStringOrThrowError(json, "undefined", true));
+
+        process.kill();
+        assertNotNull(process.checkOrWaitForEvent(ProcessState.PROCESS_STATE.STOPPED));
+    }
+
+    @Test
+    public void testGetQueryParamOrThrowError() throws Exception {
+        String[] args = { "../" };
+
+        TestingProcessManager.TestingProcess process = TestingProcessManager.start(args);
+        assertNotNull(process.checkOrWaitForEvent(ProcessState.PROCESS_STATE.STARTED));
+
+        HttpServletRequest request = mock(HttpServletRequest.class);
+
+        when(request.getParameter("untrimed mixedcase email")).thenReturn("[email protected]       ");
+        when(request.getParameter("email")).thenReturn("[email protected]");
+        when(request.getParameter("untrimed mixedcase text")).thenReturn("   TexT    ");
+        when(request.getParameter("mixedcase text")).thenReturn("TeXt");
+
+        assertEquals(InputParser.getQueryParamOrThrowError(request, "untrimed mixedcase email", false), "[email protected]");
+        assertEquals(InputParser.getQueryParamOrThrowError(request, "email", false), "[email protected]");
+        assertEquals(InputParser.getQueryParamOrThrowError(request, "untrimed mixedcase text", false), "TexT");
+        assertEquals(InputParser.getQueryParamOrThrowError(request, "mixedcase text", false), "TeXt");
+        assertThrows(ServletException.class, () -> InputParser.getQueryParamOrThrowError(request, "undefined", false));
+
+        process.kill();
+        assertNotNull(process.checkOrWaitForEvent(ProcessState.PROCESS_STATE.STOPPED));
+    }
 }