fix: mediaType=null if contentType can't be parsed

Avoids users hitting a runtime exception when the contentType is invalid.

Author: jlmwise

google-http-client/src/main/java/com/google/api/client/http/HttpResponse.java

@@ -150,14 +150,30 @@ public final class HttpResponse {
  contentType = request.getResponseHeaders().getContentType();
  }
  this.contentType = contentType;
- mediaType = contentType == null ? null : new HttpMediaType(contentType);
+ this.mediaType = parseMediaType(contentType);
 
  // log from buffer
  if (loggable) {
  logger.config(logbuf.toString());
  }
  }
 
+ /**
+ * Returns an {@link HttpMediaType} object parsed from {@link #contentType}, or {@code null} if
+ * if {@link #contentType} cannot be parsed or {@link #contentType} is {@code null}.
+ */
+ private static HttpMediaType parseMediaType(String contentType) {
+ if (contentType == null) {
+ return null;
+ }
+ try {
+ return new HttpMediaType(contentType);
+ } catch (IllegalArgumentException e) {
+ // contentType is invalid and cannot be parsed.
+ return null;
+ }
+ }
+
  /**
  * Returns the limit to the content size that will be logged during {@link #getContent()}.
  *

google-http-client/src/test/java/com/google/api/client/http/HttpResponseTest.java

@@ -58,6 +58,8 @@ public void testParseAsString_none() throws Exception {
 
  private static final String SAMPLE = "123\u05D9\u05e0\u05D9\u05D1";
  private static final String SAMPLE2 = "123abc";
+ private static final String VALID_CONTENT_TYPE = "text/plain";
+ private static final String INVALID_CONTENT_TYPE = "!!!invalid!!!";
 
  public void testParseAsString_utf8() throws Exception {
  HttpTransport transport =
@@ -102,6 +104,56 @@ public LowLevelHttpResponse execute() throws IOException {
  assertEquals(SAMPLE2, response.parseAsString());
  }
 
+ public void testParseAsString_validContentType() throws Exception {
+ HttpTransport transport =
+ new MockHttpTransport() {
+ @Override
+ public LowLevelHttpRequest buildRequest(String method, String url) throws IOException {
+ return new MockLowLevelHttpRequest() {
+ @Override
+ public LowLevelHttpResponse execute() throws IOException {
+ MockLowLevelHttpResponse result = new MockLowLevelHttpResponse();
+ result.setContent(SAMPLE2);
+ result.setContentType(VALID_CONTENT_TYPE);
+ return result;
+ }
+ };
+ }
+ };
+ HttpRequest request =
+ transport.createRequestFactory().buildGetRequest(HttpTesting.SIMPLE_GENERIC_URL);
+
+ HttpResponse response = request.execute();
+ assertEquals(SAMPLE2, response.parseAsString());
+ assertEquals(VALID_CONTENT_TYPE, response.getContentType());
+ assertNotNull(response.getMediaType());
+ }
+
+ public void testParseAsString_invalidContentType() throws Exception {
+ HttpTransport transport =
+ new MockHttpTransport() {
+ @Override
+ public LowLevelHttpRequest buildRequest(String method, String url) throws IOException {
+ return new MockLowLevelHttpRequest() {
+ @Override
+ public LowLevelHttpResponse execute() throws IOException {
+ MockLowLevelHttpResponse result = new MockLowLevelHttpResponse();
+ result.setContent(SAMPLE2);
+ result.setContentType(INVALID_CONTENT_TYPE);
+ return result;
+ }
+ };
+ }
+ };
+ HttpRequest request =
+ transport.createRequestFactory().buildGetRequest(HttpTesting.SIMPLE_GENERIC_URL);
+
+ HttpResponse response = request.execute();
+ assertEquals(SAMPLE2, response.parseAsString());
+ assertEquals(INVALID_CONTENT_TYPE, response.getContentType());
+ assertNull(response.getMediaType());
+ }
+
  public void testStatusCode_negative_dontThrowException() throws Exception {
  subtestStatusCode_negative(false);
  }