1 files changed, 126 insertions, 0 deletions
diff --git a/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/entity/LaxContentLengthStrategy.java b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/entity/LaxContentLengthStrategy.java
new file mode 100644
index 000000000..0f0dbaf15
--- /dev/null
+++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/entity/LaxContentLengthStrategy.java
@@ -0,0 +1,126 @@
+/*
+ * ====================================================================
+ * 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.entity;
+
+import ch.boye.httpclientandroidlib.Header;
+import ch.boye.httpclientandroidlib.HeaderElement;
+import ch.boye.httpclientandroidlib.HttpException;
+import ch.boye.httpclientandroidlib.HttpMessage;
+import ch.boye.httpclientandroidlib.ParseException;
+import ch.boye.httpclientandroidlib.ProtocolException;
+import ch.boye.httpclientandroidlib.annotation.Immutable;
+import ch.boye.httpclientandroidlib.entity.ContentLengthStrategy;
+import ch.boye.httpclientandroidlib.protocol.HTTP;
+import ch.boye.httpclientandroidlib.util.Args;
+
+/**
+ * The lax implementation of the content length strategy. This class will ignore
+ * unrecognized transfer encodings and malformed <code>Content-Length</code>
+ * header values.
+ * <p/>
+ * This class recognizes "chunked" and "identitiy" transfer-coding only.
+ *
+ * @since 4.0
+ */
+@Immutable
+public class LaxContentLengthStrategy implements ContentLengthStrategy {
+
+    public static final LaxContentLengthStrategy INSTANCE = new LaxContentLengthStrategy();
+
+    private final int implicitLen;
+
+    /**
+     * Creates <tt>LaxContentLengthStrategy</tt> instance with the given length used per default
+     * when content length is not explicitly specified in the message.
+     *
+     * @param implicitLen implicit content length.
+     *
+     * @since 4.2
+     */
+    public LaxContentLengthStrategy(final int implicitLen) {
+        super();
+        this.implicitLen = implicitLen;
+    }
+
+    /**
+     * Creates <tt>LaxContentLengthStrategy</tt> instance. {@link ContentLengthStrategy#IDENTITY}
+     * is used per default when content length is not explicitly specified in the message.
+     */
+    public LaxContentLengthStrategy() {
+        this(IDENTITY);
+    }
+
+    public long determineLength(final HttpMessage message) throws HttpException {
+        Args.notNull(message, "HTTP message");
+
+        final Header transferEncodingHeader = message.getFirstHeader(HTTP.TRANSFER_ENCODING);
+        // We use Transfer-Encoding if present and ignore Content-Length.
+        // RFC2616, 4.4 item number 3
+        if (transferEncodingHeader != null) {
+            final HeaderElement[] encodings;
+            try {
+                encodings = transferEncodingHeader.getElements();
+            } catch (final ParseException px) {
+                throw new ProtocolException
+                    ("Invalid Transfer-Encoding header value: " +
+                     transferEncodingHeader, px);
+            }
+            // The chunked encoding must be the last one applied RFC2616, 14.41
+            final int len = encodings.length;
+            if (HTTP.IDENTITY_CODING.equalsIgnoreCase(transferEncodingHeader.getValue())) {
+                return IDENTITY;
+            } else if ((len > 0) && (HTTP.CHUNK_CODING.equalsIgnoreCase(
+                    encodings[len - 1].getName()))) {
+                return CHUNKED;
+            } else {
+                return IDENTITY;
+            }
+        }
+        final Header contentLengthHeader = message.getFirstHeader(HTTP.CONTENT_LEN);
+        if (contentLengthHeader != null) {
+            long contentlen = -1;
+            final Header[] headers = message.getHeaders(HTTP.CONTENT_LEN);
+            for (int i = headers.length - 1; i >= 0; i--) {
+                final Header header = headers[i];
+                try {
+                    contentlen = Long.parseLong(header.getValue());
+                    break;
+                } catch (final NumberFormatException ignore) {
+                }
+                // See if we can have better luck with another header, if present
+            }
+            if (contentlen >= 0) {
+                return contentlen;
+            } else {
+                return IDENTITY;
+            }
+        }
+        return this.implicitLen;
+    }
+
+}