1 | /* $Id: uri.cpp 39447 2011-11-29 10:02:42Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - Uniform Resource Identifier handling.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2011 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 | #include <iprt/uri.h>
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32 |
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33 | #include <iprt/string.h>
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34 | #include <iprt/mem.h>
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35 | #include <iprt/path.h>
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36 | #include <iprt/stream.h>
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37 |
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38 | /* General URI format:
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39 |
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40 | foo://example.com:8042/over/there?name=ferret#nose
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41 | \_/ \______________/\_________/ \_________/ \__/
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42 | | | | | |
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43 | scheme authority path query fragment
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44 | | _____________________|__
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45 | / \ / \
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46 | urn:example:animal:ferret:nose
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47 | */
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48 |
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49 |
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50 | /*******************************************************************************
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51 | * Private RTUri helper *
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52 | *******************************************************************************/
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53 |
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54 | /* The following defines characters which have to be % escaped:
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55 | control = 00-1F
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56 | space = ' '
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57 | delims = '<' , '>' , '#' , '%' , '"'
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58 | unwise = '{' , '}' , '|' , '\' , '^' , '[' , ']' , '`'
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59 | */
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60 | #define URI_EXCLUDED(a) \
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61 | ((a) >= 0x0 && (a) <= 0x20) \
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62 | || ((a) >= 0x5B && (a) <= 0x5E) \
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63 | || ((a) >= 0x7B && (a) <= 0x7D) \
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64 | || (a) == '<' || (a) == '>' || (a) == '#' \
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65 | || (a) == '%' || (a) == '"' || (a) == '`'
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66 |
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67 | static char *rtUriPercentEncodeN(const char *pszString, size_t cchMax)
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68 | {
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69 | if (!pszString)
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70 | return NULL;
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71 |
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72 | int rc = VINF_SUCCESS;
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73 |
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74 | size_t cbLen = RT_MIN(strlen(pszString), cchMax);
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75 | /* The new string can be max 3 times in size of the original string. */
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76 | char *pszNew = (char*)RTMemAlloc(cbLen * 3 + 1);
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77 | if (!pszNew)
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78 | return NULL;
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79 | char *pszRes = NULL;
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80 | size_t iIn = 0;
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81 | size_t iOut = 0;
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82 | while(iIn < cbLen)
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83 | {
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84 | if (URI_EXCLUDED(pszString[iIn]))
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85 | {
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86 | char szNum[3] = { 0, 0, 0 };
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87 | RTStrFormatU8(&szNum[0], 3, pszString[iIn++], 16, 2, 2, RTSTR_F_CAPITAL | RTSTR_F_ZEROPAD);
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88 | pszNew[iOut++] = '%';
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89 | pszNew[iOut++] = szNum[0];
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90 | pszNew[iOut++] = szNum[1];
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91 | }
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92 | else
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93 | pszNew[iOut++] = pszString[iIn++];
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94 | }
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95 | if (RT_SUCCESS(rc))
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96 | {
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97 | pszNew[iOut] = '\0';
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98 | if (iOut != iIn)
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99 | {
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100 | /* If the source and target strings have different size, recreate
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101 | * the target string with the correct size. */
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102 | pszRes = RTStrDupN(pszNew, iOut);
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103 | RTStrFree(pszNew);
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104 | }
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105 | else
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106 | pszRes = pszNew;
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107 | }
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108 | else
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109 | RTStrFree(pszNew);
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110 |
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111 | return pszRes;
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112 | }
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113 |
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114 | static char *rtUriPercentDecodeN(const char *pszString, size_t cchMax)
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115 | {
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116 | if (!pszString)
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117 | return NULL;
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118 |
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119 | int rc = VINF_SUCCESS;
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120 | size_t cbLen = RT_MIN(strlen(pszString), cchMax);
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121 | /* The new string can only get smaller. */
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122 | char *pszNew = (char*)RTMemAlloc(cbLen + 1);
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123 | if (!pszNew)
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124 | return NULL;
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125 | char *pszRes = NULL;
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126 | size_t iIn = 0;
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127 | size_t iOut = 0;
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128 | while(iIn < cbLen)
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129 | {
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130 | if (pszString[iIn] == '%')
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131 | {
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132 | /* % encoding means the percent sign and exactly 2 hexadecimal
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133 | * digits describing the ASCII number of the character. */
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134 | ++iIn;
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135 | char szNum[] = { pszString[iIn++], pszString[iIn++], '\0' };
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136 | uint8_t u8;
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137 | rc = RTStrToUInt8Ex(szNum, NULL, 16, &u8);
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138 | if (RT_FAILURE(rc))
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139 | break;
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140 | pszNew[iOut] = u8;
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141 | }
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142 | else
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143 | pszNew[iOut] = pszString[iIn++];
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144 | ++iOut;
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145 | }
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146 | if (RT_SUCCESS(rc))
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147 | {
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148 | pszNew[iOut] = '\0';
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149 | if (iOut != iIn)
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150 | {
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151 | /* If the source and target strings have different size, recreate
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152 | * the target string with the correct size. */
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153 | pszRes = RTStrDupN(pszNew, iOut);
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154 | RTStrFree(pszNew);
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155 | }
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156 | else
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157 | pszRes = pszNew;
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158 | }
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159 | else
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160 | RTStrFree(pszNew);
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161 |
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162 | return pszRes;
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163 | }
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164 |
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165 | static bool rtUriFindSchemeEnd(const char *pszUri, size_t iStart, size_t cbLen, size_t *piEnd)
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166 | {
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167 | size_t i = iStart;
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168 | /* The scheme has to end with ':'. */
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169 | while(i < iStart + cbLen)
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170 | {
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171 | if (pszUri[i] == ':')
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172 | {
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173 | *piEnd = i;
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174 | return true;
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175 | }
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176 | ++i;
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177 | }
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178 | return false;
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179 | }
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180 |
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181 | static bool rtUriCheckAuthorityStart(const char *pszUri, size_t iStart, size_t cbLen, size_t *piStart)
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182 | {
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183 | /* The authority have to start with '//' */
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184 | if ( cbLen >= 2
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185 | && pszUri[iStart ] == '/'
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186 | && pszUri[iStart + 1] == '/')
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187 | {
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188 | *piStart = iStart + 2;
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189 | return true;
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190 | }
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191 |
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192 | return false;
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193 | }
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194 |
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195 | static bool rtUriFindAuthorityEnd(const char *pszUri, size_t iStart, size_t cbLen, size_t *piEnd)
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196 | {
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197 | size_t i = iStart;
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198 | /* The authority can end with '/' || '?' || '#'. */
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199 | while(i < iStart + cbLen)
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200 | {
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201 | if ( pszUri[i] == '/'
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202 | || pszUri[i] == '?'
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203 | || pszUri[i] == '#')
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204 | {
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205 | *piEnd = i;
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206 | return true;
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207 | }
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208 | ++i;
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209 | }
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210 | return false;
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211 | }
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212 |
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213 | static bool rtUriCheckPathStart(const char *pszUri, size_t iStart, size_t cbLen, size_t *piStart)
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214 | {
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215 | /* The path could start with a '/'. */
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216 | if ( cbLen >= 1
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217 | && pszUri[iStart] == '/')
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218 | {
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219 | *piStart = iStart; /* Including '/' */
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220 | return true;
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221 | }
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222 | /* '?' || '#' means there is no path. */
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223 | if ( cbLen >= 1
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224 | && ( pszUri[iStart] == '?'
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225 | || pszUri[iStart] == '#'))
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226 | return false;
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227 | /* All other values are allowed. */
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228 | *piStart = iStart;
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229 | return true;
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230 | }
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231 |
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232 | static bool rtUriFindPathEnd(const char *pszUri, size_t iStart, size_t cbLen, size_t *piEnd)
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233 | {
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234 | size_t i = iStart;
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235 | /* The path can end with '?' || '#'. */
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236 | while(i < iStart + cbLen)
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237 | {
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238 | if ( pszUri[i] == '?'
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239 | || pszUri[i] == '#')
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240 | {
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241 | *piEnd = i;
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242 | return true;
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243 | }
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244 | ++i;
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245 | }
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246 | return false;
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247 | }
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248 |
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249 | static bool rtUriCheckQueryStart(const char *pszUri, size_t iStart, size_t cbLen, size_t *piStart)
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250 | {
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251 | /* The query start with a '?'. */
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252 | if ( cbLen >= 1
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253 | && pszUri[iStart] == '?')
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254 | {
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255 | *piStart = iStart + 1; /* Excluding '?' */
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256 | return true;
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257 | }
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258 | return false;
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259 | }
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260 |
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261 | static bool rtUriFindQueryEnd(const char *pszUri, size_t iStart, size_t cbLen, size_t *piEnd)
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262 | {
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263 | size_t i = iStart;
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264 | /* The query can end with '?' || '#'. */
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265 | while(i < iStart + cbLen)
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266 | {
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267 | if (pszUri[i] == '#')
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268 | {
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269 | *piEnd = i;
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270 | return true;
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271 | }
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272 | ++i;
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273 | }
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274 | return false;
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275 | }
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276 |
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277 | static bool rtUriCheckFragmentStart(const char *pszUri, size_t iStart, size_t cbLen, size_t *piStart)
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278 | {
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279 | /* The fragment start with a '#'. */
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280 | if ( cbLen >= 1
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281 | && pszUri[iStart] == '#')
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282 | {
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283 | *piStart = iStart + 1; /* Excluding '#' */
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284 | return true;
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285 | }
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286 | return false;
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287 | }
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288 |
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289 | /*******************************************************************************
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290 | * Public RTUri interface *
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291 | *******************************************************************************/
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292 |
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293 | /*******************************************************************************
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294 | * Generic Uri methods *
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295 | *******************************************************************************/
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296 |
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297 | RTR3DECL(char *) RTUriCreate(const char *pszScheme, const char *pszAuthority, const char *pszPath, const char *pszQuery, const char *pszFragment)
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298 | {
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299 | if (!pszScheme) /* Scheme is minimum requirement */
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300 | return NULL;
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301 |
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302 | char *pszResult = 0;
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303 | char *pszAuthority1 = 0;
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304 | char *pszPath1 = 0;
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305 | char *pszQuery1 = 0;
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306 | char *pszFragment1 = 0;
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307 |
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308 | do
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309 | {
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310 | /* Create the percent encoded strings and calculate the necessary uri
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311 | * length. */
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312 | size_t cbSize = strlen(pszScheme) + 1 + 1; /* plus zero byte */
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313 | if (pszAuthority)
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314 | {
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315 | pszAuthority1 = rtUriPercentEncodeN(pszAuthority, RTSTR_MAX);
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316 | if (!pszAuthority1)
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317 | break;
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318 | cbSize += strlen(pszAuthority1) + 2;
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319 | }
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320 | if (pszPath)
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321 | {
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322 | pszPath1 = rtUriPercentEncodeN(pszPath, RTSTR_MAX);
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323 | if (!pszPath1)
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324 | break;
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325 | cbSize += strlen(pszPath1);
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326 | }
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327 | if (pszQuery)
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328 | {
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329 | pszQuery1 = rtUriPercentEncodeN(pszQuery, RTSTR_MAX);
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330 | if (!pszQuery1)
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331 | break;
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332 | cbSize += strlen(pszQuery1) + 1;
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333 | }
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334 | if (pszFragment)
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335 | {
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336 | pszFragment1 = rtUriPercentEncodeN(pszFragment, RTSTR_MAX);
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337 | if (!pszFragment1)
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338 | break;
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339 | cbSize += strlen(pszFragment1) + 1;
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340 | }
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341 |
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342 | char *pszTmp = pszResult = (char*)RTMemAllocZ(cbSize);
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343 | if (!pszResult)
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344 | break;
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345 | /* Compose the target uri string. */
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346 | RTStrCatP(&pszTmp, &cbSize, pszScheme);
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347 | RTStrCatP(&pszTmp, &cbSize, ":");
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348 | if (pszAuthority1)
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349 | {
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350 | RTStrCatP(&pszTmp, &cbSize, "//");
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351 | RTStrCatP(&pszTmp, &cbSize, pszAuthority1);
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352 | }
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353 | if (pszPath1)
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354 | {
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355 | RTStrCatP(&pszTmp, &cbSize, pszPath1);
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356 | }
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357 | if (pszQuery1)
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358 | {
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359 | RTStrCatP(&pszTmp, &cbSize, "?");
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360 | RTStrCatP(&pszTmp, &cbSize, pszQuery1);
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361 | }
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362 | if (pszFragment1)
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363 | {
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364 | RTStrCatP(&pszTmp, &cbSize, "#");
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365 | RTStrCatP(&pszTmp, &cbSize, pszFragment1);
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366 | }
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367 | }while (0);
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368 |
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369 | /* Cleanup */
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370 | if (pszAuthority1)
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371 | RTStrFree(pszAuthority1);
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372 | if (pszPath1)
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373 | RTStrFree(pszPath1);
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374 | if (pszQuery1)
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375 | RTStrFree(pszQuery1);
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376 | if (pszFragment1)
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377 | RTStrFree(pszFragment1);
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378 |
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379 | return pszResult;
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380 | }
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381 |
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382 | RTR3DECL(bool) RTUriHasScheme(const char *pszUri, const char *pszScheme)
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383 | {
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384 | bool fRes = false;
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385 | char *pszTmp = RTUriScheme(pszUri);
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386 | if (pszTmp)
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387 | {
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388 | fRes = RTStrNICmp(pszScheme, pszTmp, strlen(pszTmp)) == 0;
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389 | RTStrFree(pszTmp);
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390 | }
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391 | return fRes;
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392 | }
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393 |
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394 | RTR3DECL(char *) RTUriScheme(const char *pszUri)
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395 | {
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396 | AssertPtrReturn(pszUri, NULL);
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397 |
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398 | size_t iPos1;
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399 | size_t cbLen = strlen(pszUri);
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400 | if (rtUriFindSchemeEnd(pszUri, 0, cbLen, &iPos1))
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401 | return rtUriPercentDecodeN(pszUri, iPos1);
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402 | return NULL;
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403 | }
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404 |
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405 | RTR3DECL(char *) RTUriAuthority(const char *pszUri)
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406 | {
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407 | AssertPtrReturn(pszUri, NULL);
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408 |
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409 | size_t iPos1;
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410 | size_t cbLen = strlen(pszUri);
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411 | /* Find the end of the scheme. */
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412 | if (!rtUriFindSchemeEnd(pszUri, 0, cbLen, &iPos1))
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413 | return NULL; /* no URI */
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414 | else
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415 | ++iPos1; /* Skip ':' */
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416 |
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417 | size_t iPos2;
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418 | /* Find the start of the authority. */
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419 | if (rtUriCheckAuthorityStart(pszUri, iPos1, cbLen - iPos1, &iPos2))
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420 | {
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421 | size_t iPos3 = cbLen;
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422 | /* Find the end of the authority. If not found, the rest of the string
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423 | * is used. */
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424 | rtUriFindAuthorityEnd(pszUri, iPos2, cbLen - iPos2, &iPos3);
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425 | if (iPos3 > iPos2) /* Length check */
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426 | return rtUriPercentDecodeN(&pszUri[iPos2], iPos3 - iPos2);
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427 | else
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428 | return NULL;
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429 | }
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430 | return NULL;
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431 | }
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432 |
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433 | RTR3DECL(char *) RTUriPath(const char *pszUri)
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434 | {
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435 | AssertPtrReturn(pszUri, NULL);
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436 |
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437 | size_t iPos1;
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438 | size_t cbLen = strlen(pszUri);
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439 | /* Find the end of the scheme. */
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440 | if (!rtUriFindSchemeEnd(pszUri, 0, cbLen, &iPos1))
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441 | return NULL; /* no URI */
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442 | else
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443 | ++iPos1; /* Skip ':' */
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444 |
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445 | size_t iPos2;
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446 | size_t iPos3 = iPos1; /* Skip if no authority is found */
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447 | /* Find the start of the authority. */
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448 | if (rtUriCheckAuthorityStart(pszUri, iPos1, cbLen - iPos1, &iPos2))
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449 | {
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450 | /* Find the end of the authority. If not found, then there is no path
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451 | * component, cause the authority is the rest of the string. */
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452 | if (!rtUriFindAuthorityEnd(pszUri, iPos2, cbLen - iPos2, &iPos3))
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453 | return NULL; /* no path! */
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454 | }
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455 |
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456 | size_t iPos4;
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457 | /* Find the start of the path */
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458 | if (rtUriCheckPathStart(pszUri, iPos3, cbLen - iPos3, &iPos4))
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459 | {
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460 | /* Search for the end of the scheme. */
|
---|
461 | size_t iPos5 = cbLen;
|
---|
462 | rtUriFindPathEnd(pszUri, iPos4, cbLen - iPos4, &iPos5);
|
---|
463 | if (iPos5 > iPos4) /* Length check */
|
---|
464 | return rtUriPercentDecodeN(&pszUri[iPos4], iPos5 - iPos4);
|
---|
465 | }
|
---|
466 |
|
---|
467 | return NULL;
|
---|
468 | }
|
---|
469 |
|
---|
470 | RTR3DECL(char *) RTUriQuery(const char *pszUri)
|
---|
471 | {
|
---|
472 | AssertPtrReturn(pszUri, NULL);
|
---|
473 |
|
---|
474 | size_t iPos1;
|
---|
475 | size_t cbLen = strlen(pszUri);
|
---|
476 | /* Find the end of the scheme. */
|
---|
477 | if (!rtUriFindSchemeEnd(pszUri, 0, cbLen, &iPos1))
|
---|
478 | return NULL; /* no URI */
|
---|
479 | else
|
---|
480 | ++iPos1; /* Skip ':' */
|
---|
481 |
|
---|
482 | size_t iPos2;
|
---|
483 | size_t iPos3 = iPos1; /* Skip if no authority is found */
|
---|
484 | /* Find the start of the authority. */
|
---|
485 | if (rtUriCheckAuthorityStart(pszUri, iPos1, cbLen - iPos1, &iPos2))
|
---|
486 | {
|
---|
487 | /* Find the end of the authority. If not found, then there is no path
|
---|
488 | * component, cause the authority is the rest of the string. */
|
---|
489 | if (!rtUriFindAuthorityEnd(pszUri, iPos2, cbLen - iPos2, &iPos3))
|
---|
490 | return NULL; /* no path! */
|
---|
491 | }
|
---|
492 |
|
---|
493 | size_t iPos4;
|
---|
494 | size_t iPos5 = iPos3; /* Skip if no path is found */
|
---|
495 | /* Find the start of the path */
|
---|
496 | if (rtUriCheckPathStart(pszUri, iPos3, cbLen - iPos3, &iPos4))
|
---|
497 | {
|
---|
498 | /* Find the end of the path. If not found, then there is no query
|
---|
499 | * component, cause the path is the rest of the string. */
|
---|
500 | if (!rtUriFindPathEnd(pszUri, iPos4, cbLen - iPos4, &iPos5))
|
---|
501 | return NULL; /* no query! */
|
---|
502 | }
|
---|
503 |
|
---|
504 | size_t iPos6;
|
---|
505 | /* Find the start of the query */
|
---|
506 | if (rtUriCheckQueryStart(pszUri, iPos5, cbLen - iPos5, &iPos6))
|
---|
507 | {
|
---|
508 | /* Search for the end of the query. */
|
---|
509 | size_t iPos7 = cbLen;
|
---|
510 | rtUriFindQueryEnd(pszUri, iPos6, cbLen - iPos6, &iPos7);
|
---|
511 | if (iPos7 > iPos6) /* Length check */
|
---|
512 | return rtUriPercentDecodeN(&pszUri[iPos6], iPos7 - iPos6);
|
---|
513 | }
|
---|
514 |
|
---|
515 | return NULL;
|
---|
516 | }
|
---|
517 |
|
---|
518 | RTR3DECL(char *) RTUriFragment(const char *pszUri)
|
---|
519 | {
|
---|
520 | AssertPtrReturn(pszUri, NULL);
|
---|
521 |
|
---|
522 | size_t iPos1;
|
---|
523 | size_t cbLen = strlen(pszUri);
|
---|
524 | /* Find the end of the scheme. */
|
---|
525 | if (!rtUriFindSchemeEnd(pszUri, 0, cbLen, &iPos1))
|
---|
526 | return NULL; /* no URI */
|
---|
527 | else
|
---|
528 | ++iPos1; /* Skip ':' */
|
---|
529 |
|
---|
530 | size_t iPos2;
|
---|
531 | size_t iPos3 = iPos1; /* Skip if no authority is found */
|
---|
532 | /* Find the start of the authority. */
|
---|
533 | if (rtUriCheckAuthorityStart(pszUri, iPos1, cbLen - iPos1, &iPos2))
|
---|
534 | {
|
---|
535 | /* Find the end of the authority. If not found, then there is no path
|
---|
536 | * component, cause the authority is the rest of the string. */
|
---|
537 | if (!rtUriFindAuthorityEnd(pszUri, iPos2, cbLen - iPos2, &iPos3))
|
---|
538 | return NULL; /* no path! */
|
---|
539 | }
|
---|
540 |
|
---|
541 | size_t iPos4;
|
---|
542 | size_t iPos5 = iPos3; /* Skip if no path is found */
|
---|
543 | /* Find the start of the path */
|
---|
544 | if (rtUriCheckPathStart(pszUri, iPos3, cbLen - iPos3, &iPos4))
|
---|
545 | {
|
---|
546 | /* Find the end of the path. If not found, then there is no query
|
---|
547 | * component, cause the path is the rest of the string. */
|
---|
548 | if (!rtUriFindPathEnd(pszUri, iPos4, cbLen - iPos4, &iPos5))
|
---|
549 | return NULL; /* no query! */
|
---|
550 | }
|
---|
551 |
|
---|
552 | size_t iPos6;
|
---|
553 | size_t iPos7 = iPos5; /* Skip if no query is found */
|
---|
554 | /* Find the start of the query */
|
---|
555 | if (rtUriCheckQueryStart(pszUri, iPos5, cbLen - iPos5, &iPos6))
|
---|
556 | {
|
---|
557 | /* Find the end of the query If not found, then there is no fragment
|
---|
558 | * component, cause the query is the rest of the string. */
|
---|
559 | if (!rtUriFindQueryEnd(pszUri, iPos6, cbLen - iPos6, &iPos7))
|
---|
560 | return NULL; /* no query! */
|
---|
561 | }
|
---|
562 |
|
---|
563 |
|
---|
564 | size_t iPos8;
|
---|
565 | /* Find the start of the fragment */
|
---|
566 | if (rtUriCheckFragmentStart(pszUri, iPos7, cbLen - iPos7, &iPos8))
|
---|
567 | {
|
---|
568 | /* There could be nothing behind a fragment. So use the rest of the
|
---|
569 | * string. */
|
---|
570 | if (cbLen > iPos8) /* Length check */
|
---|
571 | return rtUriPercentDecodeN(&pszUri[iPos8], cbLen - iPos8);
|
---|
572 | }
|
---|
573 | return NULL;
|
---|
574 | }
|
---|
575 |
|
---|
576 | /*******************************************************************************
|
---|
577 | * File Uri methods *
|
---|
578 | *******************************************************************************/
|
---|
579 |
|
---|
580 | RTR3DECL(char *) RTUriFileCreate(const char *pszPath)
|
---|
581 | {
|
---|
582 | if (!pszPath)
|
---|
583 | return NULL;
|
---|
584 |
|
---|
585 | char *pszResult = 0;
|
---|
586 | char *pszPath1 = 0;
|
---|
587 |
|
---|
588 | do
|
---|
589 | {
|
---|
590 | /* Create the percent encoded strings and calculate the necessary uri
|
---|
591 | * length. */
|
---|
592 | pszPath1 = rtUriPercentEncodeN(pszPath, RTSTR_MAX);
|
---|
593 | if (!pszPath1)
|
---|
594 | break;
|
---|
595 | size_t cbSize = 7 /* file:// */ + strlen(pszPath1) + 1; /* plus zero byte */
|
---|
596 | if (pszPath1[0] != '/')
|
---|
597 | ++cbSize;
|
---|
598 | char *pszTmp = pszResult = (char*)RTMemAllocZ(cbSize);
|
---|
599 | if (!pszResult)
|
---|
600 | break;
|
---|
601 | /* Compose the target uri string. */
|
---|
602 | RTStrCatP(&pszTmp, &cbSize, "file://");
|
---|
603 | if (pszPath1[0] != '/')
|
---|
604 | RTStrCatP(&pszTmp, &cbSize, "/");
|
---|
605 | RTStrCatP(&pszTmp, &cbSize, pszPath1);
|
---|
606 | }while (0);
|
---|
607 |
|
---|
608 | /* Cleanup */
|
---|
609 | if (pszPath1)
|
---|
610 | RTStrFree(pszPath1);
|
---|
611 |
|
---|
612 | return pszResult;
|
---|
613 | }
|
---|
614 |
|
---|
615 | RTR3DECL(char *) RTUriFilePath(const char *pszUri, uint32_t uFormat)
|
---|
616 | {
|
---|
617 | return RTUriFileNPath(pszUri, uFormat, RTSTR_MAX);
|
---|
618 | }
|
---|
619 |
|
---|
620 | RTR3DECL(char *) RTUriFileNPath(const char *pszUri, uint32_t uFormat, size_t cchMax)
|
---|
621 | {
|
---|
622 | AssertPtrReturn(pszUri, NULL);
|
---|
623 |
|
---|
624 | size_t iPos1;
|
---|
625 | size_t cbLen = RT_MIN(strlen(pszUri), cchMax);
|
---|
626 | /* Find the end of the scheme. */
|
---|
627 | if (!rtUriFindSchemeEnd(pszUri, 0, cbLen, &iPos1))
|
---|
628 | return NULL; /* no URI */
|
---|
629 | else
|
---|
630 | ++iPos1; /* Skip ':' */
|
---|
631 |
|
---|
632 | /* Check that this is a file Uri */
|
---|
633 | if (RTStrNICmp(pszUri, "file:", iPos1) != 0)
|
---|
634 | return NULL;
|
---|
635 |
|
---|
636 | size_t iPos2;
|
---|
637 | size_t iPos3 = iPos1; /* Skip if no authority is found */
|
---|
638 | /* Find the start of the authority. */
|
---|
639 | if (rtUriCheckAuthorityStart(pszUri, iPos1, cbLen - iPos1, &iPos2))
|
---|
640 | {
|
---|
641 | /* Find the end of the authority. If not found, then there is no path
|
---|
642 | * component, cause the authority is the rest of the string. */
|
---|
643 | if (!rtUriFindAuthorityEnd(pszUri, iPos2, cbLen - iPos2, &iPos3))
|
---|
644 | return NULL; /* no path! */
|
---|
645 | }
|
---|
646 |
|
---|
647 | size_t iPos4;
|
---|
648 | /* Find the start of the path */
|
---|
649 | if (rtUriCheckPathStart(pszUri, iPos3, cbLen - iPos3, &iPos4))
|
---|
650 | {
|
---|
651 | uint32_t uFIntern = uFormat;
|
---|
652 | /* Auto is based on the current host OS. */
|
---|
653 | if (uFormat == URI_FILE_FORMAT_AUTO)
|
---|
654 | #ifdef RT_OS_WINDOWS
|
---|
655 | uFIntern = URI_FILE_FORMAT_WIN;
|
---|
656 | #else /* RT_OS_WINDOWS */
|
---|
657 | uFIntern = URI_FILE_FORMAT_UNIX;
|
---|
658 | #endif /* !RT_OS_WINDOWS */
|
---|
659 |
|
---|
660 | if ( uFIntern != URI_FILE_FORMAT_UNIX
|
---|
661 | && pszUri[iPos4] == '/')
|
---|
662 | ++iPos4;
|
---|
663 | /* Search for the end of the scheme. */
|
---|
664 | size_t iPos5 = cbLen;
|
---|
665 | rtUriFindPathEnd(pszUri, iPos4, cbLen - iPos4, &iPos5);
|
---|
666 | if (iPos5 > iPos4) /* Length check */
|
---|
667 | {
|
---|
668 | char *pszPath = rtUriPercentDecodeN(&pszUri[iPos4], iPos5 - iPos4);
|
---|
669 | if (uFIntern == URI_FILE_FORMAT_UNIX)
|
---|
670 | return RTPathChangeToUnixSlashes(pszPath, true);
|
---|
671 | else if (uFIntern == URI_FILE_FORMAT_WIN)
|
---|
672 | return RTPathChangeToDosSlashes(pszPath, true);
|
---|
673 | else
|
---|
674 | {
|
---|
675 | RTStrFree(pszPath);
|
---|
676 | AssertMsgFailed(("Unknown uri file format %u", uFIntern));
|
---|
677 | return NULL;
|
---|
678 | }
|
---|
679 | }
|
---|
680 | }
|
---|
681 |
|
---|
682 | return NULL;
|
---|
683 | }
|
---|
684 |
|
---|