1 files changed, 96 insertions, 0 deletions
diff --git a/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/CacheableRequestPolicy.java b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/CacheableRequestPolicy.java
new file mode 100644
index 000000000..500da01dc
--- /dev/null
+++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/CacheableRequestPolicy.java
@@ -0,0 +1,96 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+package ch.boye.httpclientandroidlib.impl.client.cache;
+
+import ch.boye.httpclientandroidlib.androidextra.HttpClientAndroidLog;
+/* LogFactory removed by HttpClient for Android script. */
+import ch.boye.httpclientandroidlib.Header;
+import ch.boye.httpclientandroidlib.HeaderElement;
+import ch.boye.httpclientandroidlib.HttpRequest;
+import ch.boye.httpclientandroidlib.HttpVersion;
+import ch.boye.httpclientandroidlib.ProtocolVersion;
+import ch.boye.httpclientandroidlib.annotation.Immutable;
+import ch.boye.httpclientandroidlib.client.cache.HeaderConstants;
+
+/**
+ * Determines if an HttpRequest is allowed to be served from the cache.
+ *
+ * @since 4.1
+ */
+@Immutable
+class CacheableRequestPolicy {
+
+    public HttpClientAndroidLog log = new HttpClientAndroidLog(getClass());
+
+    /**
+     * Determines if an HttpRequest can be served from the cache.
+     *
+     * @param request
+     *            an HttpRequest
+     * @return boolean Is it possible to serve this request from cache
+     */
+    public boolean isServableFromCache(final HttpRequest request) {
+        final String method = request.getRequestLine().getMethod();
+
+        final ProtocolVersion pv = request.getRequestLine().getProtocolVersion();
+        if (HttpVersion.HTTP_1_1.compareToVersion(pv) != 0) {
+            log.trace("non-HTTP/1.1 request was not serveable from cache");
+            return false;
+        }
+
+        if (!method.equals(HeaderConstants.GET_METHOD)) {
+            log.trace("non-GET request was not serveable from cache");
+            return false;
+        }
+
+        if (request.getHeaders(HeaderConstants.PRAGMA).length > 0) {
+            log.trace("request with Pragma header was not serveable from cache");
+            return false;
+        }
+
+        final Header[] cacheControlHeaders = request.getHeaders(HeaderConstants.CACHE_CONTROL);
+        for (final Header cacheControl : cacheControlHeaders) {
+            for (final HeaderElement cacheControlElement : cacheControl.getElements()) {
+                if (HeaderConstants.CACHE_CONTROL_NO_STORE.equalsIgnoreCase(cacheControlElement
+                        .getName())) {
+                    log.trace("Request with no-store was not serveable from cache");
+                    return false;
+                }
+
+                if (HeaderConstants.CACHE_CONTROL_NO_CACHE.equalsIgnoreCase(cacheControlElement
+                        .getName())) {
+                    log.trace("Request with no-cache was not serveable from cache");
+                    return false;
+                }
+            }
+        }
+
+        log.trace("Request was serveable from cache");
+        return true;
+    }
+
+}