1 | /* |
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2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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3 | * contributor license agreements. See the NOTICE file distributed with |
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4 | * this work for additional information regarding copyright ownership. |
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5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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6 | * (the "License"); you may not use this file except in compliance with |
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7 | * the License. You may obtain a copy of the License at |
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8 | * |
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9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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10 | * |
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11 | * Unless required by applicable law or agreed to in writing, software |
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12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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14 | * See the License for the specific language governing permissions and |
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15 | * limitations under the License. |
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16 | */ |
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17 | |
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18 | /* |
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19 | * $Id: BinHTTPURLInputStream.hpp 568078 2007-08-21 11:43:25Z amassari $ |
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20 | */ |
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21 | |
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22 | #if !defined(BINHTTPURLINPUTSTREAM_HPP) |
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23 | #define BINHTTPURLINPUTSTREAM_HPP |
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24 | |
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25 | |
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26 | #include <xercesc/util/XMLURL.hpp> |
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27 | #include <xercesc/util/XMLExceptMsgs.hpp> |
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28 | #include <xercesc/util/BinInputStream.hpp> |
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29 | #include <xercesc/util/Mutexes.hpp> |
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30 | #include <xercesc/util/XMLNetAccessor.hpp> |
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31 | |
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32 | // |
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33 | // This class implements the BinInputStream interface specified by the XML |
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34 | // parser. |
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35 | // |
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36 | struct hostent; |
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37 | struct sockaddr; |
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38 | |
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39 | XERCES_CPP_NAMESPACE_BEGIN |
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40 | |
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41 | class XMLUTIL_EXPORT BinHTTPURLInputStream : public BinInputStream |
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42 | { |
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43 | public : |
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44 | BinHTTPURLInputStream(const XMLURL& urlSource, const XMLNetHTTPInfo* httpInfo=0); |
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45 | ~BinHTTPURLInputStream(); |
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46 | |
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47 | unsigned int curPos() const; |
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48 | unsigned int readBytes |
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49 | ( |
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50 | XMLByte* const toFill |
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51 | , const unsigned int maxToRead |
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52 | ); |
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53 | |
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54 | static void Cleanup(); |
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55 | |
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56 | |
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57 | private : |
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58 | // ----------------------------------------------------------------------- |
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59 | // Unimplemented constructors and operators |
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60 | // ----------------------------------------------------------------------- |
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61 | BinHTTPURLInputStream(const BinHTTPURLInputStream&); |
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62 | BinHTTPURLInputStream& operator=(const BinHTTPURLInputStream&); |
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63 | // ----------------------------------------------------------------------- |
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64 | // Private data members |
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65 | // |
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66 | // fSocketHandle |
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67 | // The socket representing the connection to the remote file. |
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68 | // We deliberately did not define the type to be SOCKET, so as to |
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69 | // avoid bringing in any Windows header into this file. |
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70 | // fBytesProcessed |
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71 | // Its a rolling count of the number of bytes processed off this |
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72 | // input stream. |
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73 | // fBuffer |
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74 | // Holds the http header, plus the first part of the actual |
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75 | // data. Filled at the time the stream is opened, data goes |
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76 | // out to user in response to readBytes(). |
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77 | // fBufferPos, fBufferEnd |
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78 | // Pointers into fBuffer, showing start and end+1 of content |
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79 | // that readBytes must return. |
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80 | // ----------------------------------------------------------------------- |
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81 | MemoryManager* fMemoryManager; |
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82 | unsigned int fSocketHandle; |
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83 | unsigned int fBytesProcessed; |
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84 | char fBuffer[4000]; |
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85 | char * fBufferEnd; |
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86 | char * fBufferPos; |
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87 | static bool fInitialized; |
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88 | static XMLMutex* fInitMutex; |
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89 | |
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90 | static void Initialize(MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager); |
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91 | |
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92 | inline static hostent* gethostbyname(const char* name); |
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93 | inline static unsigned long inet_addr(const char* cp); |
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94 | inline static hostent* gethostbyaddr(const char* addr,int len,int type); |
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95 | inline static unsigned short htons(unsigned short hostshort); |
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96 | inline static unsigned int socket(int af,int type,int protocol); |
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97 | inline static int connect(unsigned int s,const sockaddr* name,int namelen); |
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98 | inline static int send(unsigned int s,const char* buf,int len,int flags); |
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99 | inline static int recv(unsigned int s,char* buf,int len,int flags); |
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100 | inline static int shutdown(unsigned int s,int how); |
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101 | inline static int closesocket(unsigned int socket); |
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102 | |
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103 | friend class SocketJanitor; |
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104 | }; |
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105 | |
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106 | |
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107 | inline unsigned int BinHTTPURLInputStream::curPos() const |
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108 | { |
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109 | return fBytesProcessed; |
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110 | } |
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111 | |
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112 | XERCES_CPP_NAMESPACE_END |
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113 | |
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114 | #endif // BINHTTPURLINPUTSTREAM_HPP |
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