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0d5cfec907
* instead of making (dis)-allow 0.9 a property of connection info, work off a state machine that engages in the liberal skipping of junk before response headers only immediately after a no-content response on the same connection. * when scanning for response headers in a large amount of junk place a non infinite limit on that (128KB).. the only known use case for this is skipping illegal message bodies in 304's and those just aren't that big. --HG-- extra : rebase_source : 433fd6aae237d29a9957b1a70cf1e756af5a8af0
223 lines
9.4 KiB
C++
223 lines
9.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@netscape.com> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsHttpTransaction_h__
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#define nsHttpTransaction_h__
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#include "nsHttp.h"
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#include "nsHttpHeaderArray.h"
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#include "nsAHttpTransaction.h"
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#include "nsAHttpConnection.h"
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#include "nsCOMPtr.h"
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#include "nsInt64.h"
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#include "nsIPipe.h"
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#include "nsIInputStream.h"
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#include "nsIOutputStream.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsISocketTransportService.h"
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#include "nsITransport.h"
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#include "nsIEventTarget.h"
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//-----------------------------------------------------------------------------
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class nsHttpTransaction;
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class nsHttpRequestHead;
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class nsHttpResponseHead;
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class nsHttpChunkedDecoder;
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class nsIHttpActivityObserver;
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//-----------------------------------------------------------------------------
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// nsHttpTransaction represents a single HTTP transaction. It is thread-safe,
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// intended to run on the socket thread.
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//-----------------------------------------------------------------------------
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class nsHttpTransaction : public nsAHttpTransaction
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, public nsIInputStreamCallback
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, public nsIOutputStreamCallback
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSAHTTPTRANSACTION
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NS_DECL_NSIINPUTSTREAMCALLBACK
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NS_DECL_NSIOUTPUTSTREAMCALLBACK
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nsHttpTransaction();
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virtual ~nsHttpTransaction();
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//
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// called to initialize the transaction
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//
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// @param caps
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// the transaction capabilities (see nsHttp.h)
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// @param connInfo
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// the connection type for this transaction.
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// @param reqHeaders
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// the request header struct
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// @param reqBody
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// the request body (POST or PUT data stream)
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// @param reqBodyIncludesHeaders
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// fun stuff to support NPAPI plugins.
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// @param target
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// the dispatch target were notifications should be sent.
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// @param callbacks
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// the notification callbacks to be given to PSM.
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// @param responseBody
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// the input stream that will contain the response data. async
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// wait on this input stream for data. on first notification,
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// headers should be available (check transaction status).
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//
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nsresult Init(PRUint8 caps,
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nsHttpConnectionInfo *connInfo,
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nsHttpRequestHead *reqHeaders,
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nsIInputStream *reqBody,
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PRBool reqBodyIncludesHeaders,
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nsIEventTarget *consumerTarget,
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nsIInterfaceRequestor *callbacks,
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nsITransportEventSink *eventsink,
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nsIAsyncInputStream **responseBody);
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// attributes
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PRUint8 Caps() { return mCaps; }
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nsHttpConnectionInfo *ConnectionInfo() { return mConnInfo; }
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nsHttpRequestHead *RequestHead() { return mRequestHead; }
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nsHttpResponseHead *ResponseHead() { return mHaveAllHeaders ? mResponseHead : nsnull; }
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nsISupports *SecurityInfo() { return mSecurityInfo; }
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nsIInterfaceRequestor *Callbacks() { return mCallbacks; }
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nsIEventTarget *ConsumerTarget() { return mConsumerTarget; }
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nsAHttpConnection *Connection() { return mConnection; }
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// Called to take ownership of the response headers; the transaction
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// will drop any reference to the response headers after this call.
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nsHttpResponseHead *TakeResponseHead();
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// Called to find out if the transaction generated a complete response.
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PRBool ResponseIsComplete() { return mResponseIsComplete; }
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void SetSSLConnectFailed() { mSSLConnectFailed = PR_TRUE; }
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PRBool SSLConnectFailed() { return mSSLConnectFailed; }
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// These methods may only be used by the connection manager.
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void SetPriority(PRInt32 priority) { mPriority = priority; }
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PRInt32 Priority() { return mPriority; }
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private:
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nsresult Restart();
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char *LocateHttpStart(char *buf, PRUint32 len,
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PRBool aAllowPartialMatch);
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void ParseLine(char *line);
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nsresult ParseLineSegment(char *seg, PRUint32 len);
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nsresult ParseHead(char *, PRUint32 count, PRUint32 *countRead);
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nsresult HandleContentStart();
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nsresult HandleContent(char *, PRUint32 count, PRUint32 *contentRead, PRUint32 *contentRemaining);
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nsresult ProcessData(char *, PRUint32, PRUint32 *);
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void DeleteSelfOnConsumerThread();
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static NS_METHOD ReadRequestSegment(nsIInputStream *, void *, const char *,
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PRUint32, PRUint32, PRUint32 *);
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static NS_METHOD WritePipeSegment(nsIOutputStream *, void *, char *,
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PRUint32, PRUint32, PRUint32 *);
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private:
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nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
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nsCOMPtr<nsITransportEventSink> mTransportSink;
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nsCOMPtr<nsIEventTarget> mConsumerTarget;
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nsCOMPtr<nsISupports> mSecurityInfo;
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nsCOMPtr<nsIAsyncInputStream> mPipeIn;
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nsCOMPtr<nsIAsyncOutputStream> mPipeOut;
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nsCOMPtr<nsISupports> mChannel;
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nsCOMPtr<nsIHttpActivityObserver> mActivityDistributor;
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nsCString mReqHeaderBuf; // flattened request headers
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nsCOMPtr<nsIInputStream> mRequestStream;
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PRUint32 mRequestSize;
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nsAHttpConnection *mConnection; // hard ref
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nsHttpConnectionInfo *mConnInfo; // hard ref
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nsHttpRequestHead *mRequestHead; // weak ref
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nsHttpResponseHead *mResponseHead; // hard ref
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nsAHttpSegmentReader *mReader;
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nsAHttpSegmentWriter *mWriter;
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nsCString mLineBuf; // may contain a partial line
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nsInt64 mContentLength; // equals -1 if unknown
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nsInt64 mContentRead; // count of consumed content bytes
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// After a 304/204 or other "no-content" style response we will skip over
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// up to MAX_INVALID_RESPONSE_BODY_SZ bytes when looking for the next
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// response header to deal with servers that actually sent a response
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// body where they should not have. This member tracks how many bytes have
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// so far been skipped.
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PRUint32 mInvalidResponseBytesRead;
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nsHttpChunkedDecoder *mChunkedDecoder;
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nsresult mStatus;
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PRInt16 mPriority;
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PRUint16 mRestartCount; // the number of times this transaction has been restarted
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PRUint8 mCaps;
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// state flags
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PRUint32 mClosed : 1;
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PRUint32 mConnected : 1;
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PRUint32 mHaveStatusLine : 1;
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PRUint32 mHaveAllHeaders : 1;
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PRUint32 mTransactionDone : 1;
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PRUint32 mResponseIsComplete : 1;
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PRUint32 mDidContentStart : 1;
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PRUint32 mNoContent : 1; // expecting an empty entity body
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PRUint32 mSentData : 1;
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PRUint32 mReceivedData : 1;
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PRUint32 mStatusEventPending : 1;
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PRUint32 mHasRequestBody : 1;
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PRUint32 mSSLConnectFailed : 1;
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PRUint32 mHttpResponseMatched: 1;
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// mClosed := transaction has been explicitly closed
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// mTransactionDone := transaction ran to completion or was interrupted
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// mResponseComplete := transaction ran to completion
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};
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#endif // nsHttpTransaction_h__
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