1 | /**********************************************************************
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2 | *
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3 | * httpreq.h
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4 | * Copyright (C) 1996
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5 | *
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6 | * A component of the fnord webserver written by [email protected].
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7 | *
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8 | * Altered for use with the Greenstone digital library software by the
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9 | * New Zealand Digital Library Project at the University of Waikato,
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10 | * New Zealand.
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11 | *
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12 | * This program is free software; you can redistribute it and/or modify
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13 | * it under the terms of the GNU General Public License as published by
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14 | * the Free Software Foundation; either version 2 of the License, or
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15 | * (at your option) any later version.
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16 | *
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17 | * This program is distributed in the hope that it will be useful,
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18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 | * GNU General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, write to the Free Software
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24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25 | *
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26 | *********************************************************************/
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27 |
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28 | #ifndef HTTPREQ_H
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29 | #define HTTPREQ_H
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30 |
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31 | // need this to avoid bizarre compiler problems under VC++ 6.0
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32 | #if !defined (GSDL_NAMESPACE_BROKEN) && !defined (GSDL_USE_IOS_H)
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33 | # include <iostream>
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34 | # include <fstream>
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35 | using namespace std;
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36 | #endif
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37 |
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38 | #include "locate.h"
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39 | #include "text_t.h"
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40 |
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41 | /*
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42 | Module Name: HTTP Request
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43 | Purpose: Parses HTTP requests and then calls the appropriate function
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44 | to respond to the request
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45 | Public Functions:
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46 | Request Thread
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47 | */
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48 |
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49 | // Public Data Structures
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50 |
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51 | //Used for sending information to the request thread
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52 | struct RequestThreadMessageT {
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53 | SOCKADDR_IN ClientSockAddr;
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54 | SOCKET ClientSocket;
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55 | int AddrLen;
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56 | };
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57 |
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58 | #define MAX_OTHER_HEADERS 100
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59 |
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60 | struct RequestHeaderT {
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61 | text_t Var;
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62 | text_t Val;
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63 | };
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64 |
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65 | struct RequestFieldsT {
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66 | //Simple request line info v0.9
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67 | text_t MethodStr;
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68 | text_t URIStr;
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69 | //added v1.0
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70 | text_t VersionStr;
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71 | //General Header
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72 | text_t DateStr;
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73 | text_t MIMEVerStr;
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74 | text_t PragmaStr;
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75 | //Request Header
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76 | text_t AuthorizationStr;
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77 | text_t FromStr;
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78 | text_t IfModSinceStr;
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79 | text_t RefererStr;
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80 | text_t UserAgentStr;
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81 | //Entity Header (Only CGI stuff)
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82 | text_t ContentEncodingStr;
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83 | text_t ContentTypeStr;
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84 | text_t ContentLengthStr;
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85 | //v1.0 Optional (the more common ones)
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86 | text_t AcceptStr;
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87 | text_t AcceptLangStr;
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88 | //v1.1 Exentions
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89 | text_t ConnectionStr;
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90 | //Pointer to buffer containing the content
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91 | DWORD ContentLength;
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92 | BYTE *Content;
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93 |
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94 | //Other Headers
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95 | int NumOtherHeaders;
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96 | RequestHeaderT OtherHeaders[MAX_OTHER_HEADERS];
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97 | };
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98 |
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99 | struct RequestInfoT {
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100 | int ThreadNum;
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101 |
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102 | //Buffer for IO operations (so we're not constantly reallocating buffers)
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103 | BYTE *IOBuffer;
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104 | int IOBufferSize;
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105 |
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106 | //Socket the request is on and its address
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107 | SOCKET ClientSocket;
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108 | SOCKADDR_IN ClientSockAddr;
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109 | int AddrLen;
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110 |
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111 | //Should we keep the connection alive?
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112 | BOOL KeepAlive;
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113 | };
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114 |
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115 |
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116 | // Public Functions
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117 |
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118 | /*
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119 | Function Name: RequestThread
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120 | Purpose: Was the HTTP request processing thread
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121 | Now just a standard procedure called to process a request
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122 | Parameters:
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123 | Pointer to packed parameter structure
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124 | */
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125 | void RequestThread(RequestThreadMessageT *Parameters);
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126 |
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127 | /*
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128 | Function Name: Process 1.0 Request
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129 | Purpose: Sends a HTTP 1.0 (plus some) reply to a HTTP 1.x request
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130 | Parameters:
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131 | ClientSocket - Socket the client is on
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132 | ClientSockAddr - Address of client
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133 | AddrLen - Length of client address
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134 | RequestInfo - Structure storing the parsed headers
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135 | KeepAlive - To be set to true if we are maintainig the connection
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136 | IOBuffer - Pointer to buffer allocated for IO operations
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137 | TheadNum - Number of calling thread for debugging
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138 | Notes: The function uses "Connection: Keep-Alive" as written in the HTTP/1.1
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139 | draft and implemented by Netscape and MSIE
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140 | */
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141 | void Process10Request(RequestInfoT &RequestInfo, RequestFieldsT &RequestFields);
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142 |
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143 | #endif
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