1 | /* $Id: http.cpp 87037 2020-12-03 16:14:04Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - HTTP common API.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2012-2020 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | #define LOG_GROUP RTLOGGROUP_HTTP
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32 | #include <iprt/http-common.h>
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33 | #include "internal/iprt.h"
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34 |
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35 | #include <iprt/asm.h>
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36 | #include <iprt/assert.h>
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37 | #include <iprt/ctype.h>
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38 | #include <iprt/log.h>
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39 | #include <iprt/mem.h>
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40 | #include <iprt/string.h>
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41 |
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42 | #include "internal/magics.h"
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43 |
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44 |
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45 | /*********************************************************************************************************************************
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46 | * Defined Constants And Macros *
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47 | *********************************************************************************************************************************/
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48 | /** Validates a handle and returns VERR_INVALID_HANDLE if not valid. */
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49 | #define RTHTTPHEADERLIST_VALID_RETURN_RC(hList, a_rc) \
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50 | do { \
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51 | AssertPtrReturn((hList), (a_rc)); \
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52 | AssertReturn((hList)->u32Magic == RTHTTPHEADERLIST_MAGIC, (a_rc)); \
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53 | } while (0)
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54 |
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55 | /** Validates a handle and returns VERR_INVALID_HANDLE if not valid. */
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56 | #define RTHTTPHEADERLIST_VALID_RETURN(hList) RTHTTPHEADERLIST_VALID_RETURN_RC((hList), VERR_INVALID_HANDLE)
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57 |
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58 | /** Validates a handle and returns (void) if not valid. */
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59 | #define RTHTTPHEADERLIST_VALID_RETURN_VOID(hList) \
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60 | do { \
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61 | AssertPtrReturnVoid(hList); \
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62 | AssertReturnVoid((hList)->u32Magic == RTHTTPHEADERLIST_MAGIC); \
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63 | } while (0)
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64 |
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65 |
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66 | /*********************************************************************************************************************************
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67 | * Internal structs. *
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68 | *********************************************************************************************************************************/
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69 | /**
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70 | * HTTP header list, internal definition.
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71 | */
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72 | typedef struct RTHTTPHEADERLISTINTERNAL
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73 | {
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74 | /** The list node. */
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75 | RTLISTANCHOR List;
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76 | /** Magic value. */
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77 | uint32_t u32Magic;
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78 | } RTHTTPHEADERLISTINTERNAL;
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79 | /** Pointer to an internal HTTP header list. */
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80 | typedef RTHTTPHEADERLISTINTERNAL *PRTHTTPHEADERLISTINTERNAL;
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81 |
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82 |
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83 | /*********************************************************************************************************************************
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84 | * Prototypes. *
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85 | *********************************************************************************************************************************/
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86 | static void rtHttpHeaderListRemoveAll(PRTHTTPHEADERLISTINTERNAL pThis);
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87 |
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88 |
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89 | /*********************************************************************************************************************************
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90 | * Lookup / conversion functions *
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91 | *********************************************************************************************************************************/
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92 |
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93 | RTR3DECL(const char *) RTHttpMethodToStr(RTHTTPMETHOD enmMethod)
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94 | {
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95 | switch (enmMethod)
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96 | {
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97 | case RTHTTPMETHOD_INVALID: return "invalid";
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98 | case RTHTTPMETHOD_GET: return "GET";
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99 | case RTHTTPMETHOD_PUT: return "PUT";
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100 | case RTHTTPMETHOD_POST: return "POST";
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101 | case RTHTTPMETHOD_PATCH: return "PATCH";
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102 | case RTHTTPMETHOD_DELETE: return "DELETE";
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103 | case RTHTTPMETHOD_HEAD: return "HEAD";
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104 | case RTHTTPMETHOD_OPTIONS: return "OPTIONS";
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105 | case RTHTTPMETHOD_TRACE: return "TRACE";
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106 | #ifdef IPRT_HTTP_WITH_WEBDAV
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107 | case RTHTTPMETHOD_PROPFIND: return "PROPFIND";
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108 | #endif
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109 | case RTHTTPMETHOD_END:
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110 | RT_FALL_THROUGH();
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111 | case RTHTTPMETHOD_32BIT_HACK:
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112 | break;
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113 | }
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114 | return "unknown";
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115 | }
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116 |
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117 | RTR3DECL(const char *) RTHttpStatusToStr(RTHTTPSTATUS enmSts)
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118 | {
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119 | switch (enmSts)
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120 | {
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121 | case RTHTTPSTATUS_OK : return "OK";
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122 | case RTHTTPSTATUS_CREATED : return "Created";
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123 | case RTHTTPSTATUS_ACCEPTED : return "Accepted";
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124 | case RTHTTPSTATUS_NONAUTHORITATIVEINFORMATION : return "Non-Authoritative Information";
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125 | case RTHTTPSTATUS_NOCONTENT : return "No Content";
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126 | case RTHTTPSTATUS_RESETCONTENT : return "Reset Content";
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127 | case RTHTTPSTATUS_PARTIALCONTENT : return "Partial Content";
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128 | case RTHTTPSTATUS_MULTISTATUS : return "Multi-Status";
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129 | case RTHTTPSTATUS_ALREADYREPORTED : return "Already Reported";
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130 | case RTHTTPSTATUS_IMUSED : return "IM Used";
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131 |
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132 | case RTHTTPSTATUS_BADREQUEST : return "Bad Request";
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133 | case RTHTTPSTATUS_UNAUTHORIZED : return "Unauthorized";
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134 | case RTHTTPSTATUS_PAYMENTREQUIRED : return "Payment Required";
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135 | case RTHTTPSTATUS_FORBIDDEN : return "Forbidden";
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136 | case RTHTTPSTATUS_NOTFOUND : return "Not Found";
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137 | case RTHTTPSTATUS_METHODNOTALLOWED : return "Method Not Allowed";
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138 | case RTHTTPSTATUS_NOTACCEPTABLE : return "Not Acceptable";
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139 | case RTHTTPSTATUS_PROXYAUTHENTICATIONREQUIRED : return "Proxy Authentication Required";
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140 | case RTHTTPSTATUS_REQUESTTIMEOUT : return "Request Timeout";
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141 | case RTHTTPSTATUS_CONFLICT : return "Conflict";
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142 | case RTHTTPSTATUS_GONE : return "Gone";
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143 | case RTHTTPSTATUS_LENGTHREQUIRED : return "Length Required";
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144 | case RTHTTPSTATUS_PRECONDITIONFAILED : return "Precondition Failed";
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145 | case RTHTTPSTATUS_PAYLOADTOOLARGE : return "Payload Too Large";
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146 | case RTHTTPSTATUS_URITOOLONG : return "URI Too Long";
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147 | case RTHTTPSTATUS_UNSUPPORTEDMEDIATYPE : return "Unsupported Media Type";
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148 | case RTHTTPSTATUS_RANGENOTSATISFIABLE : return "Range Not Satisfiable";
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149 | case RTHTTPSTATUS_EXPECTATIONFAILED : return "Expectation Failed";
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150 | case RTHTTPSTATUS_IMATEAPOT : return "I'm a teapot";
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151 | case RTHTTPSTATUS_UNPROCESSABLEENTITY : return "Unprocessable Entity";
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152 | case RTHTTPSTATUS_LOCKED : return "Locked";
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153 | case RTHTTPSTATUS_FAILEDDEPENDENCY : return "Failed Dependency";
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154 | case RTHTTPSTATUS_UPGRADEREQUIRED : return "Upgrade Required";
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155 | case RTHTTPSTATUS_PRECONDITIONREQUIRED : return "Precondition Required";
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156 | case RTHTTPSTATUS_TOOMANYREQUESTS : return "Too Many Requests";
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157 | case RTHTTPSTATUS_REQUESTHEADERFIELDSTOOLARGE : return "Request Header Fields Too Large";
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158 | case RTHTTPSTATUS_UNAVAILABLEFORLEGALREASONS : return "Unavailable For Legal Reasons";
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159 |
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160 | case RTHTTPSTATUS_INTERNALSERVERERROR : return "Internal Server Error";
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161 | case RTHTTPSTATUS_NOTIMPLEMENTED : return "Not Implemented";
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162 | case RTHTTPSTATUS_BADGATEWAY : return "Bad Gateway";
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163 | case RTHTTPSTATUS_SERVICEUNAVAILABLE : return "Service Unavailable";
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164 | case RTHTTPSTATUS_GATEWAYTIMEOUT : return "Gateway Time-out";
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165 | case RTHTTPSTATUS_HTTPVERSIONNOTSUPPORTED : return "HTTP Version Not Supported";
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166 | case RTHTTPSTATUS_VARIANTALSONEGOTIATES : return "Variant Also Negotiates";
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167 | case RTHTTPSTATUS_INSUFFICIENTSTORAGE : return "Insufficient Storage";
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168 | case RTHTTPSTATUS_LOOPDETECTED : return "Loop Detected";
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169 | case RTHTTPSTATUS_NOTEXTENDED : return "Not Extended";
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170 | case RTHTTPSTATUS_NETWORKAUTHENTICATIONREQUIRED: return "Network Authentication Required";
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171 |
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172 | default: break;
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173 | }
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174 |
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175 | AssertFailed();
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176 | return "<Not implemented>";
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177 | }
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178 |
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179 |
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180 | /*********************************************************************************************************************************
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181 | * HTTP Header List *
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182 | *********************************************************************************************************************************/
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183 |
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184 | RTR3DECL(int) RTHttpHeaderListInit(PRTHTTPHEADERLIST hHdrLst)
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185 | {
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186 | PRTHTTPHEADERLISTINTERNAL pThis = (PRTHTTPHEADERLISTINTERNAL)RTMemAllocZ(sizeof(RTHTTPHEADERLISTINTERNAL));
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187 | if (pThis)
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188 | {
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189 | pThis->u32Magic = RTHTTPHEADERLIST_MAGIC;
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190 |
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191 | RTListInit(&pThis->List);
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192 |
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193 | *hHdrLst = (RTHTTPHEADERLIST)pThis;
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194 |
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195 | return VINF_SUCCESS;
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196 | }
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197 |
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198 | return VERR_NO_MEMORY;
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199 | }
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200 |
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201 |
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202 | /**
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203 | * Destroys the headers associated with this list (w/o telling cURL about it).
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204 | *
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205 | * @param hHdrLst The HTTP header list instance.
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206 | */
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207 | RTR3DECL(void) RTHttpHeaderListDestroy(RTHTTPHEADERLIST hHdrLst)
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208 | {
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209 | PRTHTTPHEADERLISTINTERNAL pThis = hHdrLst;
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210 | RTHTTPHEADERLIST_VALID_RETURN_VOID(pThis);
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211 |
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212 | rtHttpHeaderListRemoveAll(pThis);
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213 | }
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214 |
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215 |
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216 | static void rtHttpHeaderListRemoveAll(PRTHTTPHEADERLISTINTERNAL pThis)
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217 | {
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218 | PRTHTTPHEADERENTRY pEntry, pNext;
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219 | RTListForEachSafe(&pThis->List, pEntry, pNext, RTHTTPHEADERENTRY, Node)
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220 | {
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221 | RTListNodeRemove(&pEntry->Node);
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222 | RTMemFree(pEntry);
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223 | }
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224 | }
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225 |
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226 | /**
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227 | * Worker for RTHttpHeaderListSet and RTHttpHeaderListAdd.
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228 | *
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229 | * @returns IPRT status code.
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230 | * @param pThis The HTTP header list instance.
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231 | * @param pchName The field name. Does not need to be terminated.
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232 | * @param cchName The field name length.
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233 | * @param pchValue The field value. Does not need to be terminated.
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234 | * @param cchValue The field value length.
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235 | * @param fFlags RTHTTPADDHDR_F_XXX.
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236 | */
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237 | static int rtHttpHeaderListAddWorker(PRTHTTPHEADERLISTINTERNAL pThis,
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238 | const char *pchName, size_t cchName, const char *pchValue, size_t cchValue, uint32_t fFlags)
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239 | {
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240 | /*
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241 | * Create the list entry.
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242 | */
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243 | size_t cbData = cchName + 2 + cchValue + 1;
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244 | PRTHTTPHEADERENTRY pHdr = (PRTHTTPHEADERENTRY)RTMemAlloc(RT_UOFFSETOF_DYN(RTHTTPHEADERENTRY, szData[cbData]));
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245 | if (pHdr)
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246 | {
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247 | pHdr->cchName = (uint32_t)cchName;
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248 | pHdr->offValue = (uint32_t)(cchName + 2);
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249 | char *psz = pHdr->szData;
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250 | memcpy(psz, pchName, cchName);
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251 | psz += cchName;
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252 | *psz++ = ':';
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253 | *psz++ = ' ';
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254 | memcpy(psz, pchValue, cchValue);
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255 | psz[cchValue] = '\0';
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256 |
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257 | /*
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258 | * Appending to an existing list requires no cURL interaction.
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259 | */
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260 | AssertCompile(RTHTTPHEADERLISTADD_F_FRONT != 0);
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261 | if (!(fFlags & RTHTTPHEADERLISTADD_F_FRONT))
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262 | {
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263 | RTListAppend(&pThis->List, &pHdr->Node);
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264 | return VINF_SUCCESS;
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265 | }
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266 |
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267 | /*
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268 | * When prepending or adding the first header we need to inform cURL
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269 | * about the new list head.
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270 | */
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271 | RTListPrepend(&pThis->List, &pHdr->Node);
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272 | return VINF_SUCCESS;
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273 | }
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274 | return VERR_NO_MEMORY;
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275 | }
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276 |
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277 |
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278 | RTR3DECL(int) RTHttpHeaderListSet(RTHTTPHEADERLIST hHdrLst,
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279 | size_t cHeaders, const char * const *papszHeaders)
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280 | {
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281 | PRTHTTPHEADERLISTINTERNAL pThis = hHdrLst;
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282 | RTHTTPHEADERLIST_VALID_RETURN(pThis);
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283 |
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284 | /*
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285 | * Drop old headers and reset state.
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286 | */
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287 | rtHttpHeaderListRemoveAll(pThis);
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288 |
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289 | /*
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290 | * We're done if no headers specified.
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291 | */
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292 | if (!cHeaders)
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293 | return VINF_SUCCESS;
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294 |
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295 | /*
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296 | * Add the headers, one by one.
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297 | */
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298 | int rc = VINF_SUCCESS;
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299 | for (size_t i = 0; i < cHeaders; i++)
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300 | {
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301 | const char *pszHeader = papszHeaders[i];
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302 | size_t cchHeader = strlen(pszHeader);
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303 | size_t cchName = (const char *)memchr(pszHeader, ':', cchHeader) - pszHeader;
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304 | AssertBreakStmt(cchName < cchHeader, rc = VERR_INVALID_PARAMETER);
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305 | size_t offValue = RT_C_IS_BLANK(pszHeader[cchName + 1]) ? cchName + 2 : cchName + 1;
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306 | rc = rtHttpHeaderListAddWorker(pThis, pszHeader, cchName, &pszHeader[offValue], cchHeader - offValue,
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307 | RTHTTPHEADERLISTADD_F_BACK);
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308 | AssertRCBreak(rc);
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309 | }
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310 | if (RT_SUCCESS(rc))
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311 | return rc;
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312 | rtHttpHeaderListRemoveAll(pThis);
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313 | return rc;
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314 | }
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315 |
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316 |
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317 | RTR3DECL(int) RTHttpHeaderListAdd(RTHTTPHEADERLIST hHdrLst,
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318 | const char *pszField, const char *pszValue, size_t cchValue, uint32_t fFlags)
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319 | {
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320 | /*
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321 | * Validate input and calc string lengths.
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322 | */
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323 | PRTHTTPHEADERLISTINTERNAL pThis = hHdrLst;
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324 | RTHTTPHEADERLIST_VALID_RETURN(pThis);
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325 | AssertReturn(!(fFlags & ~RTHTTPHEADERLISTADD_F_BACK), VERR_INVALID_FLAGS);
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326 | AssertPtr(pszField);
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327 | size_t const cchField = strlen(pszField);
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328 | AssertReturn(cchField > 0, VERR_INVALID_PARAMETER);
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329 | AssertReturn(pszField[cchField - 1] != ':', VERR_INVALID_PARAMETER);
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330 | AssertReturn(!RT_C_IS_SPACE(pszField[cchField - 1]), VERR_INVALID_PARAMETER);
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331 | #ifdef RT_STRICT
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332 | for (size_t i = 0; i < cchField; i++)
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333 | {
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334 | char const ch = pszField[i];
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335 | Assert(RT_C_IS_PRINT(ch) && ch != ':');
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336 | }
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337 | #endif
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338 |
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339 | AssertPtr(pszValue);
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340 | if (cchValue == RTSTR_MAX)
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341 | cchValue = strlen(pszValue);
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342 |
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343 | /*
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344 | * Just pass it along to the worker.
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345 | */
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346 | return rtHttpHeaderListAddWorker(pThis, pszField, cchField, pszValue, cchValue, fFlags);
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347 | }
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348 |
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349 |
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350 | RTR3DECL(const char *) RTHttpHeaderListGet(RTHTTPHEADERLIST hHdrLst, const char *pszField, size_t cchField)
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351 | {
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352 | PRTHTTPHEADERLISTINTERNAL pThis = hHdrLst;
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353 | RTHTTPHEADERLIST_VALID_RETURN_RC(pThis, NULL);
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354 |
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355 | if (cchField == RTSTR_MAX)
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356 | cchField = strlen(pszField);
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357 |
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358 | PRTHTTPHEADERENTRY pEntry;
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359 | RTListForEach(&pThis->List, pEntry, RTHTTPHEADERENTRY, Node)
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360 | {
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361 | if ( pEntry->cchName == cchField
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362 | && RTStrNICmpAscii(pEntry->szData, pszField, cchField) == 0)
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363 | return &pEntry->szData[pEntry->offValue];
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364 | }
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365 | return NULL;
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366 | }
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367 |
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368 |
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369 | RTR3DECL(size_t) RTHttpHeaderListGetCount(RTHTTPHEADERLIST hHdrLst)
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370 | {
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371 | PRTHTTPHEADERLISTINTERNAL pThis = hHdrLst;
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372 | RTHTTPHEADERLIST_VALID_RETURN_RC(pThis, 0);
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373 |
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374 | /* Note! Only for test cases and debugging, so we don't care about performance. */
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375 | size_t cHeaders = 0;
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376 | PRTHTTPHEADERENTRY pEntry;
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377 | RTListForEach(&pThis->List, pEntry, RTHTTPHEADERENTRY, Node)
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378 | cHeaders++;
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379 | return cHeaders;
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380 | }
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381 |
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382 |
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383 | RTR3DECL(const char *) RTHttpHeaderListGetByOrdinal(RTHTTPHEADERLIST hHdrLst, size_t iOrdinal)
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384 | {
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385 | PRTHTTPHEADERLISTINTERNAL pThis = hHdrLst;
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386 | RTHTTPHEADERLIST_VALID_RETURN_RC(pThis, NULL);
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387 |
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388 | /* Note! Only for test cases and debugging, so we don't care about performance. */
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389 | PRTHTTPHEADERENTRY pEntry;
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390 | RTListForEach(&pThis->List, pEntry, RTHTTPHEADERENTRY, Node)
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391 | {
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392 | if (iOrdinal == 0)
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393 | return pEntry->szData;
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394 | iOrdinal--;
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395 | }
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396 |
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397 | return NULL;
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398 | }
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399 |
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