1 files changed, 116 insertions, 0 deletions
diff --git a/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/entity/StrictContentLengthStrategy.java b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/entity/StrictContentLengthStrategy.java
new file mode 100644
index 000000000..1693c3111
--- /dev/null
+++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/entity/StrictContentLengthStrategy.java
@@ -0,0 +1,116 @@
+/*
+ * ====================================================================
+ * 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.HttpException;
+import ch.boye.httpclientandroidlib.HttpMessage;
+import ch.boye.httpclientandroidlib.HttpVersion;
+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 strict implementation of the content length strategy. This class
+ * will throw {@link ProtocolException} if it encounters an unsupported
+ * transfer encoding or a malformed <code>Content-Length</code> header
+ * value.
+ * <p>
+ * This class recognizes "chunked" and "identitiy" transfer-coding only.
+ *
+ * @since 4.0
+ */
+@Immutable
+public class StrictContentLengthStrategy implements ContentLengthStrategy {
+
+    public static final StrictContentLengthStrategy INSTANCE = new StrictContentLengthStrategy();
+
+    private final int implicitLen;
+
+    /**
+     * Creates <tt>StrictContentLengthStrategy</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 StrictContentLengthStrategy(final int implicitLen) {
+        super();
+        this.implicitLen = implicitLen;
+    }
+
+    /**
+     * Creates <tt>StrictContentLengthStrategy</tt> instance. {@link ContentLengthStrategy#IDENTITY}
+     * is used per default when content length is not explicitly specified in the message.
+     */
+    public StrictContentLengthStrategy() {
+        this(IDENTITY);
+    }
+
+    public long determineLength(final HttpMessage message) throws HttpException {
+        Args.notNull(message, "HTTP message");
+        // Although Transfer-Encoding is specified as a list, in practice
+        // it is either missing or has the single value "chunked". So we
+        // treat it as a single-valued header here.
+        final Header transferEncodingHeader = message.getFirstHeader(HTTP.TRANSFER_ENCODING);
+        if (transferEncodingHeader != null) {
+            final String s = transferEncodingHeader.getValue();
+            if (HTTP.CHUNK_CODING.equalsIgnoreCase(s)) {
+                if (message.getProtocolVersion().lessEquals(HttpVersion.HTTP_1_0)) {
+                    throw new ProtocolException(
+                            "Chunked transfer encoding not allowed for " +
+                            message.getProtocolVersion());
+                }
+                return CHUNKED;
+            } else if (HTTP.IDENTITY_CODING.equalsIgnoreCase(s)) {
+                return IDENTITY;
+            } else {
+                throw new ProtocolException(
+                        "Unsupported transfer encoding: " + s);
+            }
+        }
+        final Header contentLengthHeader = message.getFirstHeader(HTTP.CONTENT_LEN);
+        if (contentLengthHeader != null) {
+            final String s = contentLengthHeader.getValue();
+            try {
+                final long len = Long.parseLong(s);
+                if (len < 0) {
+                    throw new ProtocolException("Negative content length: " + s);
+                }
+                return len;
+            } catch (final NumberFormatException e) {
+                throw new ProtocolException("Invalid content length: " + s);
+            }
+        }
+        return this.implicitLen;
+    }
+
+}