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📄 handlerrequest.java

📁 精通tomcat书籍原代码,希望大家共同学习
💻 JAVA
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            return OK;

        default:
            if(log.isInfoEnabled())
                log.info("Unknown message " + type);
        }

        return OK;
    }

    static int count = 0;

    private Request checkRequest(MsgContext ep) {
        Request req=ep.getRequest();
        if( req==null ) {
            req=new Request();
            Response res=new Response();
            req.setResponse(res);
            ep.setRequest( req );
            if( registerRequests ) {
                synchronized(lock) {
                    ep.getSource().registerRequest(req, ep, count++);
                }
            }
        }
        return req;
    }

    private int decodeRequest( Msg msg, MsgContext ep, MessageBytes tmpMB )
        throws IOException    {
        // FORWARD_REQUEST handler
        Request req = checkRequest(ep);

        RequestInfo rp = req.getRequestProcessor();
        rp.setStage(Constants.STAGE_PARSE);
        MessageBytes tmpMB2 = (MessageBytes)req.getNote(WorkerEnv.SSL_CERT_NOTE);
        if(tmpMB2 != null) {
            tmpMB2.recycle();
        }
        req.setStartTime(System.currentTimeMillis());
        
        // Translate the HTTP method code to a String.
        byte methodCode = msg.getByte();
        if (methodCode != AjpConstants.SC_M_JK_STORED) {
            String mName=AjpConstants.methodTransArray[(int)methodCode - 1];
            req.method().setString(mName);
        }

        msg.getBytes(req.protocol()); 
        msg.getBytes(req.requestURI());

        msg.getBytes(req.remoteAddr());
        msg.getBytes(req.remoteHost());
        msg.getBytes(req.localName());
        req.setLocalPort(msg.getInt());

        boolean isSSL = msg.getByte() != 0;
        if( isSSL ) {
            // XXX req.setSecure( true );
            req.scheme().setString("https");
        }

        decodeHeaders( ep, msg, req, tmpMB );

        decodeAttributes( ep, msg, req, tmpMB );

        rp.setStage(Constants.STAGE_PREPARE);
        MessageBytes valueMB = req.getMimeHeaders().getValue("host");
        parseHost(valueMB, req);
        // set cookies on request now that we have all headers
        req.getCookies().setHeaders(req.getMimeHeaders());

        // Check to see if there should be a body packet coming along
        // immediately after
        int cl=req.getContentLength();
        if(cl > 0) {
            JkInputStream jkIS = ep.getInputStream();
            jkIS.setIsReadRequired(true);
            if(!delayInitialRead) {
                jkIS.receive();
            }
        }
    
        if (log.isTraceEnabled()) {
            log.trace(req.toString());
         }

        return OK;
    }
        
    private int decodeAttributes( MsgContext ep, Msg msg, Request req,
                                  MessageBytes tmpMB) {
        boolean moreAttr=true;

        while( moreAttr ) {
            byte attributeCode=msg.getByte();
            if( attributeCode == AjpConstants.SC_A_ARE_DONE )
                return 200;

            /* Special case ( XXX in future API make it separate type !)
             */
            if( attributeCode == AjpConstants.SC_A_SSL_KEY_SIZE ) {
                // Bug 1326: it's an Integer.
                req.setAttribute(SSLSupport.KEY_SIZE_KEY,
                                 new Integer( msg.getInt()));
               //Integer.toString(msg.getInt()));
            }

            if( attributeCode == AjpConstants.SC_A_REQ_ATTRIBUTE ) {
                // 2 strings ???...
                msg.getBytes( tmpMB );
                String n=tmpMB.toString();
                msg.getBytes( tmpMB );
                String v=tmpMB.toString();
                req.setAttribute(n, v );
                if(log.isTraceEnabled())
                    log.trace("jk Attribute set " + n + "=" + v);
            }


            // 1 string attributes
            switch(attributeCode) {
            case AjpConstants.SC_A_CONTEXT      :
                msg.getBytes( tmpMB );
                // nothing
                break;
                
            case AjpConstants.SC_A_SERVLET_PATH :
                msg.getBytes( tmpMB );
                // nothing 
                break;
                
            case AjpConstants.SC_A_REMOTE_USER  :
                if( tomcatAuthentication ) {
                    // ignore server
                    msg.getBytes( tmpMB );
                } else {
                    msg.getBytes(req.getRemoteUser());
                }
                break;
                
            case AjpConstants.SC_A_AUTH_TYPE    :
                if( tomcatAuthentication ) {
                    // ignore server
                    msg.getBytes( tmpMB );
                } else {
                    msg.getBytes(req.getAuthType());
                }
                break;
                
            case AjpConstants.SC_A_QUERY_STRING :
                msg.getBytes(req.queryString());
                break;
                
            case AjpConstants.SC_A_JVM_ROUTE    :
                msg.getBytes(req.instanceId());
                break;
                
            case AjpConstants.SC_A_SSL_CERT     :
                req.scheme().setString( "https" );
                // Transform the string into certificate.
                MessageBytes tmpMB2 = (MessageBytes)req.getNote(WorkerEnv.SSL_CERT_NOTE);
                if(tmpMB2 == null) {
                    tmpMB2 = MessageBytes.newInstance();
                    req.setNote(WorkerEnv.SSL_CERT_NOTE, tmpMB2);
                }
                // SSL certificate extraction is costy, moved to JkCoyoteHandler
                msg.getBytes(tmpMB2);
                break;
                
            case AjpConstants.SC_A_SSL_CIPHER   :
                req.scheme().setString( "https" );
                msg.getBytes(tmpMB);
                req.setAttribute(SSLSupport.CIPHER_SUITE_KEY,
                                 tmpMB.toString());
                break;
                
            case AjpConstants.SC_A_SSL_SESSION  :
                req.scheme().setString( "https" );
                msg.getBytes(tmpMB);
                req.setAttribute(SSLSupport.SESSION_ID_KEY, 
                                  tmpMB.toString());
                break;
                
            case AjpConstants.SC_A_SECRET  :
                msg.getBytes(tmpMB);
                String secret=tmpMB.toString();
                if(log.isTraceEnabled())
                    log.trace("Secret: " + secret );
                // endpoint note
                ep.setNote( secretNote, secret );
                break;
                
            case AjpConstants.SC_A_STORED_METHOD:
                msg.getBytes(req.method()); 
                break;
                
            default:
                break; // ignore, we don't know about it - backward compat
            }
        }
        return 200;
    }
    
    private void decodeHeaders( MsgContext ep, Msg msg, Request req,
                                MessageBytes tmpMB ) {
        // Decode headers
        MimeHeaders headers = req.getMimeHeaders();

        int hCount = msg.getInt();
        for(int i = 0 ; i < hCount ; i++) {
            String hName = null;

            // Header names are encoded as either an integer code starting
            // with 0xA0, or as a normal string (in which case the first
            // two bytes are the length).
            int isc = msg.peekInt();
            int hId = isc & 0xFF;

            MessageBytes vMB=null;
            isc &= 0xFF00;
            if(0xA000 == isc) {
                msg.getInt(); // To advance the read position
                hName = AjpConstants.headerTransArray[hId - 1];
                vMB=headers.addValue( hName );
            } else {
                // reset hId -- if the header currently being read
                // happens to be 7 or 8 bytes long, the code below
                // will think it's the content-type header or the
                // content-length header - SC_REQ_CONTENT_TYPE=7,
                // SC_REQ_CONTENT_LENGTH=8 - leading to unexpected
                // behaviour.  see bug 5861 for more information.
                hId = -1;
                msg.getBytes( tmpMB );
                ByteChunk bc=tmpMB.getByteChunk();
                vMB=headers.addValue( bc.getBuffer(),
                                      bc.getStart(), bc.getLength() );
            }

            msg.getBytes(vMB);

            if (hId == AjpConstants.SC_REQ_CONTENT_LENGTH ||
                (hId == -1 && tmpMB.equalsIgnoreCase("Content-Length"))) {
                // just read the content-length header, so set it
                req.setContentLength( vMB.getInt() );
            } else if (hId == AjpConstants.SC_REQ_CONTENT_TYPE ||
                (hId == -1 && tmpMB.equalsIgnoreCase("Content-Type"))) {
                // just read the content-type header, so set it
                ByteChunk bchunk = vMB.getByteChunk();
                req.contentType().setBytes(bchunk.getBytes(),
                                           bchunk.getOffset(),
                                           bchunk.getLength());
            }
        }
    }

    /**
     * Parse host.
     */
    private void parseHost(MessageBytes valueMB, Request request) 
        throws IOException {

        if (valueMB == null || valueMB.isNull()) {
            // HTTP/1.0
            // Default is what the socket tells us. Overriden if a host is 
            // found/parsed
            request.setServerPort(request.getLocalPort());
            request.serverName().duplicate(request.localName());
            return;
        }

        ByteChunk valueBC = valueMB.getByteChunk();
        byte[] valueB = valueBC.getBytes();
        int valueL = valueBC.getLength();
        int valueS = valueBC.getStart();
        int colonPos = -1;
        CharChunk hostNameC = (CharChunk)request.getNote(HOSTBUFFER);
        if(hostNameC == null) {
            hostNameC = new CharChunk(valueL);
            request.setNote(HOSTBUFFER, hostNameC);
        }
        hostNameC.recycle();

        boolean ipv6 = (valueB[valueS] == '[');
        boolean bracketClosed = false;
        for (int i = 0; i < valueL; i++) {
            char b = (char) valueB[i + valueS];
            hostNameC.append(b);
            if (b == ']') {
                bracketClosed = true;
            } else if (b == ':') {
                if (!ipv6 || bracketClosed) {
                    colonPos = i;
                    break;
                }
            }
        }

        if (colonPos < 0) {
            if (request.scheme().equalsIgnoreCase("https")) {
                // 80 - Default HTTTP port
                request.setServerPort(443);
            } else {
                // 443 - Default HTTPS port
                request.setServerPort(80);
            }
            request.serverName().setChars(hostNameC.getChars(), 
                                          hostNameC.getStart(), 
                                          hostNameC.getLength());
        } else {

            request.serverName().setChars(hostNameC.getChars(), 
                                          hostNameC.getStart(), colonPos);

            int port = 0;
            int mult = 1;
            for (int i = valueL - 1; i > colonPos; i--) {
                int charValue = HexUtils.DEC[(int) valueB[i + valueS]];
                if (charValue == -1) {
                    // Invalid character
                    throw new CharConversionException("Invalid char in port: " + valueB[i + valueS]); 
                }
                port = port + (charValue * mult);
                mult = 10 * mult;
            }
            request.setServerPort(port);

        }

    }

}

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