src/server/util/uri.c

Sun, 06 Nov 2022 15:53:32 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 06 Nov 2022 15:53:32 +0100
changeset 415
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parent 386
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permissions
-rw-r--r--

switch from ucx 2 to 3

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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5 *
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6 * THE BSD LICENSE
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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10 *
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11 * Redistributions of source code must retain the above copyright notice, this
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12 * list of conditions and the following disclaimer.
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13 * Redistributions in binary form must reproduce the above copyright notice,
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14 * this list of conditions and the following disclaimer in the documentation
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15 * and/or other materials provided with the distribution.
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16 *
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17 * Neither the name of the nor the names of its contributors may be
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18 * used to endorse or promote products derived from this software without
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19 * specific prior written permission.
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20 *
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21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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25 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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32 */
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33
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34 #ifdef XP_WIN32
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35 #define _MBCS
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36 #include <windows.h>
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37 #include <mbctype.h>
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38 #endif
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39
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40 #include "util.h"
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41 #include "pool.h"
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42 //include "frame/conf_api.h"
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43 //include "support/stringvalue.h"
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44
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45 #ifdef XP_WIN32
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46 static PRBool _getfullpathname = -1;
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47 #endif /* XP_WIN32 */
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48
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49 /* --------------------------- util_uri_is_evil --------------------------- */
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50
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51 static inline int allow_dbcs_uri()
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52 {
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53 /*
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54 static int flagDbcsUri = -1;
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55 if (flagDbcsUri == -1) {
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56 flagDbcsUri = StringValue::getBoolean(conf_findGlobal("DbcsUri"));
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57 }
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58 return flagDbcsUri;
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59 */
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60 return PR_TRUE;
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61 }
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62
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63 #ifdef XP_WIN32
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64 void set_fullpathname(PRBool b)
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65 {
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66 _getfullpathname = b;
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67 }
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68 #endif /*XP_WIN32*/
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69
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70 NSAPI_PUBLIC int util_uri_is_evil_internal(const char *t, int allow_tilde, int allow_dot_dir)
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71 {
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72 #ifdef XP_WIN32
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73 int flagDbcsUri = allow_dbcs_uri();
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74 #endif // XP_WIN32
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75 PRBool flagEmptySegment = PR_FALSE;
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76 int x;
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77
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78 for (x = 0; t[x]; ++x) {
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79 if (t[x] == '/') {
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80 if (flagEmptySegment)
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81 return 1; // "/;a/b"
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82 #ifdef XP_WIN32
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83 if (t[x+1] == '/' && x != 0)
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84 #else
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85 if (t[x+1] == '/')
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86 #endif
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87 return 1;
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88 if (t[x+1] == ';')
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89 flagEmptySegment = PR_TRUE; // "/;a/b" is evil, "/a/;b" is not
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90 if (t[x+1] == '.') {
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91 /* "." at end of line is always prohibited */
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92 if (t[x+2] == '\0')
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93 return 1;
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94
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95 /* "." as a path segment is prohibited conditionally */
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96 if (!allow_dot_dir && (t[x+2] == '/' || t[x+2] == ';'))
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97 return 1;
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98
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99 /* ".." as a path segment is always prohibited */
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100 if (t[x+2] == '.' && (t[x+3] == '/' || t[x+3] == ';' || t[x+3] == '\0'))
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101 return 1;
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102 }
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103 }
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104 #ifdef XP_WIN32
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105 // Don't allow '~' in the filename. On some filesystems a long name
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106 // (e.g. longfilename.htm) can be accessed using '~' bypassing any ACL
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107 // checks (e.g. longfi~1.htm).
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108 if (!allow_tilde && (t[x] == '~')) {
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109 return 1;
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110 }
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111
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112 // Do not allow ':' apart from drive letter. Windows filestream
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113 // will treat filename::$DATA as a plain file & display content.
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114 // So block it to prevent source viewing vulnerability.
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115 if ((t[x] == ':') && x > 1) {
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116 return 1;
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117 }
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118
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119 // On NT, the directory "abc...." is the same as "abc"
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120 // The only cheap way to catch this globally is to disallow
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121 // names with the trailing "."s. Hopefully this is not over
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122 // restrictive.
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123 // Also trailing spaces in names can wreak havoc on ACL checks
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124 // and name resolution. Therefore, ban them on the end of a
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125 // name.
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126 if (((t[x] == '.') || (t[x] == ' ')) &&
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127 ((t[x+1] == ';') || (t[x+1] == '/') || (t[x+1] == '\0')))
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128 {
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129 return 1;
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130 }
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131
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132 // Skip past the second byte of two byte DBCS characters. Bug 353999
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133 if (flagDbcsUri && t[x+1] && IsDBCSLeadByte(t[x])) x++;
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134 #endif // XP_WIN32
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135 }
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136 return 0;
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137 }
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138
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139 NSAPI_PUBLIC int util_uri_is_evil(const char *t)
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140 {
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141 return util_uri_is_evil_internal(t, 0, 0);
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142 }
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143
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144
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145 /* -------------------- util_uri_unescape_and_normalize -------------------- */
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146
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147 #ifdef XP_WIN32
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148 /* The server calls this function to unescape the URI and also normalize
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149 * the uri. Normalizing the uri converts all "\" characters in the URI
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150 * and pathinfo portion to "/". Does not touch "\" in query strings.
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151 */
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152 NSAPI_PUBLIC
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153 int util_uri_unescape_and_normalize(pool_handle_t *pool, char *s, char *unnormalized)
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154 {
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155 if(!(util_uri_unescape_strict(s)))
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156 return 0;
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157
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158 if (unnormalized) strcpy(unnormalized, s);
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159
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160 if (_getfullpathname == -1)
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161 _getfullpathname = (_getmbcp() != 0);
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162
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163 /* Get canonical filename Bugid: 4672869 */
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164 if(_getfullpathname && strcmp(s, "*") && (*s == '/' ) ) {
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165 char *pzAbsPath = NULL;
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166 int pathlen = 0;
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167 int len = 0;
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168 int ret = 0;
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169 if(!(pzAbsPath = util_canonicalize_uri(pool, s, strlen(s), NULL))) {
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170 //Error canonicalizing; possibly pointing out of docroot
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171 return 0;
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172 }
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173 char *pzPath = (char *)MALLOC(MAX_PATH + 1); /* reserved byte for trailing slash */
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174 char *pzFilename = NULL;
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175
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176 /* If required length of the buffer(pzPath) is more than the allocated one i.e. MAX_PATH(neglecting the reserved byte for trailing slash), return BAD REQUEST. This will happen if length of uri is more than the specified uri length(257) for MBCS windows */
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177 if(!(ret = GetFullPathName(pzAbsPath, MAX_PATH, pzPath, &pzFilename)) || ( ret > MAX_PATH)){
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178 FREE(pzAbsPath);
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179 FREE(pzPath);
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180 return 0;
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181 }
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182 len = strlen(pzAbsPath);
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183 pathlen = strlen( pzPath );
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184
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185 /* GetFullPathName behaves differently in case of WINNT and WIN2K */
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186 /* o/p string doesn't contain the trailing slash in case of WINNT */
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187 /* if i/p is /foo/, we get o/p as c:\foo instead of c:\foo\ */
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188 /* Checking if i/p has trailing slash and o/p doesn't have, then */
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189 /* adding slash */
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190 if ( pzAbsPath[len-1] == '/' && pzPath[pathlen-1] != '\\')
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191 strcat( pzPath, "\\");
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192 FREE(pzAbsPath);
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193 pzFilename = strchr(pzPath, '\\');
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194 if(!pzFilename) {
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195 FREE(pzPath);
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196 return 0;
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197 }
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198 strcpy(s, pzFilename);
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199 FREE(pzPath);
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200 }
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201
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202 util_uri_normalize_slashes(s);
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203
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204 return 1;
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205 }
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206 #endif /* XP_WIN32 */
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207
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208
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209 /* ---------------------- util_uri_normalize_slashes ---------------------- */
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210
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211 void util_uri_normalize_slashes(char *s)
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212 {
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213 #ifdef XP_WIN32
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214 int flagDbcsUri = allow_dbcs_uri();
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215
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216 while (*s) {
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217 if (*s == '\\') {
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218 // Normalize '\\' to '/'
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219 *s = '/';
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220 } else if (flagDbcsUri && s[1] && IsDBCSLeadByte(s[0])) {
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221 // Skip past two byte DBCS characters. Bug 353999
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222 s++;
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223 }
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224 s++;
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225 }
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226 #endif
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227 }
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228
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229
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230 /* --------------------------- util_uri_escape ---------------------------- */
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231 NSAPI_PUBLIC char *util_uri_escape(char *od, const char *s)
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232 {
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233 int flagDbcsUri = allow_dbcs_uri();
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234 char *d;
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235
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236 if (!od)
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237 od = (char *) MALLOC((strlen(s)*3) + 1);
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238 d = od;
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239
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240 while (*s) {
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241 if (strchr("% ?#:+&*\"'<>\r\n", *s)) {
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242 util_sprintf(d, "%%%02x", (unsigned char)*s);
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243 ++s; d += 3;
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244 }
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245 #ifdef XP_WIN32
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246 else if (flagDbcsUri && s[1] && IsDBCSLeadByte(s[0]))
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247 #else
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248 // Treat any character with the high bit set as a DBCS lead byte
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249 else if (flagDbcsUri && s[1] && (s[0] & 0x80))
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250 #endif
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251 {
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252 // Escape the second byte of DBCS characters. The first byte will
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253 // have been escaped already. IE translates all unescaped '\\'s
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254 // into '/'.
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255 // Bug 353999
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256 util_sprintf(d, "%%%02x%%%02x", (unsigned char)s[0], (unsigned char)s[1]);
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257 s += 2; d += 6;
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258 }
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259 else if (0x80 & *s) {
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260 util_sprintf(d, "%%%02x", (unsigned char)*s);
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261 ++s; d += 3;
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262 } else {
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263 *d++ = *s++;
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264 }
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265 }
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266 *d = '\0';
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267 return od;
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268 }
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269
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270
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271 /* --------------------------- util_url_escape ---------------------------- */
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272
1
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273 NSAPI_PUBLIC char *util_url_escape(char *od, const char *s)
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274 {
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275 int flagDbcsUri = allow_dbcs_uri();
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276 char *d;
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277
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278 if (!od)
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279 od = (char *) MALLOC((strlen(s)*3) + 1);
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280 d = od;
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281
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282 while (*s) {
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283 if (strchr("% +*\"'<>\r\n", *s)) {
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284 util_sprintf(d, "%%%02x", (unsigned char)*s);
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285 ++s; d += 3;
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286 }
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287 #ifdef XP_WIN32
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288 else if (flagDbcsUri && s[1] && IsDBCSLeadByte(s[0]))
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289 #else
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290 // Treat any character with the high bit set as a DBCS lead byte
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291 else if (flagDbcsUri && s[1] && (s[0] & 0x80))
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292 #endif
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293 {
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294 // Escape the second byte of DBCS characters. The first byte will
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295 // have been escaped already. IE translates all unescaped '\\'s
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296 // into '/'.
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297 // Bug 353999
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298 util_sprintf(d, "%%%02x%%%02x", (unsigned char)s[0], (unsigned char)s[1]);
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299 s += 2; d += 6;
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300 }
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301 else if (0x80 & *s) {
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302 util_sprintf(d, "%%%02x", (unsigned char)*s);
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303 ++s; d += 3;
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304 } else {
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305 *d++ = *s++;
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306 }
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307 }
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308 *d = '\0';
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309 return od;
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310 }
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311
1
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312
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313 /* ------------------------- util_uri_strip_params ------------------------- */
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314
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315 NSAPI_PUBLIC char* util_uri_strip_params(char *uri)
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316 {
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317 // As per RFC2396, URI path segments can contain parameters beginning with
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318 // ';'. These parameters must be removed from the ppath. Bug 418271
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319 char* out;
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diff changeset
320 if((out = strchr(uri, ';'))) {
1
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321 char* in = out;
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322 while (*in) {
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323 if (*in == ';') {
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diff changeset
324 // Skip past parameter
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
325 do in++; while (*in && *in != '/');
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
326 } else {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
327 // Copy non-parameter path data
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
328 *out++ = *in++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
329 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
330 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
331 *out = 0;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
332 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
333 return uri;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
334 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
335
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
336
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
337 /* ------------------------ util_canonicalize_uri ------------------------- */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
338
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
339 /*
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
340 * rewrite rules:
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
341 * // -> '/'
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
342 * /./ -> '/'
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
343 * /.\0 -> '/'
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
344 * /foo/../ -> '/'
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
345 * /foo/..\0 -> '/'
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
346 *
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
347 * Allocate a new string, as otherwise replacing in-line would impact the
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
348 * RequestURI, i.e. original URI in the request.
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
349 * Some guidelines in: http://www.ietf.org/rfc/rfc2396.txt
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
350 * Uniform Resource Identifiers (URI): Generic Syntax
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
351 */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
352 NSAPI_PUBLIC char* util_canonicalize_uri(pool_handle_t *pool, const char *uri, int len, int *pcanonlen)
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
353 {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
354 PRBool success = PR_TRUE;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
355 const char *in_ptr = uri;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
356 int in = 0;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
357 int in_len = len;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
358
24
1a7853a4257e removed some NSPR dependencies
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 14
diff changeset
359 //PR_ASSERT(uri != NULL); // TODO
1
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
360
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
361 char* canonPath = (char *)pool_malloc(pool, in_len+1);
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
362 char* out_ptr = canonPath;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
363
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
364 if (!canonPath) {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
365 success = PR_FALSE;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
366 goto done;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
367 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
368
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
369
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
370 /* in goes from 0 .. sURIPath.len-1; out_ptr points to
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
371 * space where next char from input would be copied to
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
372 */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
373 while (in < in_len) {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
374
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
375 /* If the character isn't '/' then copy it out and move on*/
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
376 if (in_ptr[0] != '/') {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
377 *out_ptr++ = *in_ptr++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
378 in++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
379 continue;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
380 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
381
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
382 /* found '/' and reached end of sURIPath, done */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
383 if (in+1 >= in_len) {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
384 *out_ptr++ = *in_ptr++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
385 in++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
386 break;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
387 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
388
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
389 /* we have '/' and there are more chars in the string */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
390 switch(in_ptr[1]) {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
391 case '/':
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
392 /* '//' => '/' */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
393 in_ptr++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
394 in++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
395 break;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
396
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
397 case '.':
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
398 /* we have "/." so far */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
399 if (in+2 >= in_len) {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
400 /* the string ends after this; basically ignore '.'
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
401 * make sure the ending / is transferred to output.
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
402 */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
403 *out_ptr++ = *in_ptr++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
404 goto done;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
405 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
406
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
407 /* more chars after "/."; see if it is a '/' */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
408 if (in_ptr[2] == '/') {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
409 /* in deed, compact "/./" => "/"; */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
410 in_ptr += 2;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
411 in += 2;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
412 break;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
413 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
414
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
415 if (in_ptr[2] != '.') {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
416 /* "/.x" where x is not '.'; copy as is */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
417 *out_ptr++ = *in_ptr++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
418 in++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
419 break;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
420 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
421
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
422 /* we have "/.." so far. see if we have either string
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
423 * ending after this or '/' following.
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
424 */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
425 if (in+3 < in_len && in_ptr[3] != '/' && in_ptr[3] != ';') {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
426 /* we have "/..x" here; so copy as is */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
427 *out_ptr++ = *in_ptr++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
428 in++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
429 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
430 else {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
431 /* we have "foo/../" or "foo/.." at the end; */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
432 if (out_ptr == canonPath) {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
433 /* oops, we found "/../" pointing out of docroot */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
434 success = PR_FALSE;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
435 goto done;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
436 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
437
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
438 /* remove the previous segment in the output */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
439 for (out_ptr--;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
440 out_ptr != canonPath && out_ptr[0] != '/';
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
441 out_ptr--); /* Empty Loop */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
442
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
443 /* point to '/' if the last segment ended with .. then
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
444 * leave the '/' before the previous segment.
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
445 */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
446 if(in+3 == in_len)
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
447 out_ptr++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
448
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
449 /* skip the input as well */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
450 in_ptr += 3;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
451 in += 3;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
452 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
453 break;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
454
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
455 default:
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
456 /* If we already have '/' at out_ptr we donot need to copy */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
457 if (out_ptr == canonPath || *(out_ptr-1) != '/')
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
458 *out_ptr++ = *in_ptr;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
459 in_ptr++; in++;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
460 break;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
461 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
462 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
463
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
464 done:
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
465
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
466 if (success) {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
467 /* the path looks fine; return the canonicalized form */
364
e56f9c6f6b8f fix code that is not standard C
Mike Becker <universe@uap-core.de>
parents: 362
diff changeset
468 unsigned canonLen = (unsigned) (out_ptr - canonPath);
1
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
469 canonPath[canonLen] = '\0';
364
e56f9c6f6b8f fix code that is not standard C
Mike Becker <universe@uap-core.de>
parents: 362
diff changeset
470 if (pcanonlen) *pcanonlen = (int) canonLen;
1
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
471 } else {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
472 /* error canonicalizing */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
473 pool_free(pool, canonPath);
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
474 canonPath = NULL;
364
e56f9c6f6b8f fix code that is not standard C
Mike Becker <universe@uap-core.de>
parents: 362
diff changeset
475 if (pcanonlen) *pcanonlen = 0;
1
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
476 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
477
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
478 return canonPath;
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
479 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
480
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
481
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
482 /* ---------------------- util_canonicalize_redirect ---------------------- */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
483
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
484 NSAPI_PUBLIC char* util_canonicalize_redirect(pool_handle_t *pool, const char *baseUri, const char *newUri)
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
485 {
24
1a7853a4257e removed some NSPR dependencies
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 14
diff changeset
486 //PR_ASSERT(baseUri != NULL); // TODO
1
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
487
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
488 if (*newUri == '/')
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
489 return util_canonicalize_uri(pool, newUri, strlen(newUri), NULL);
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
490
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
491 int bLen = strlen(baseUri);
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
492 if (bLen > 0 && baseUri[bLen - 1] != '/') {
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
493 while (bLen > 0 && baseUri[bLen - 1] != '/')
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
494 bLen--;
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parents:
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495 }
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496
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497 int pLen = strlen(newUri) + bLen + 1; // 1 for slash
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498 char *pUri = (char *)pool_malloc(pool, pLen + 1);
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parents:
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499 if (!pUri)
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500 return PR_FALSE;
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parents:
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501
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parents:
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502 memcpy(pUri, baseUri, bLen);
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parents:
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503 pUri[bLen] = '/';
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504 strcpy(pUri + bLen + 1, newUri);
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parents:
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505
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parents:
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506 char *rval = util_canonicalize_uri(pool, pUri, pLen, NULL);
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507 pool_free(pool, pUri);
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508
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509 return rval;
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parents:
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510 }
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parents:
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511
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parents:
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512
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parents:
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513 /* ------------------------ util_host_port_suffix ------------------------- */
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514
362
e45f218628cd port uri.cpp to uri.c
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515 NSAPI_PUBLIC const char *util_host_port_suffix(const char *h)
1
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516 {
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517 /* Return a pointer to the colon preceding the port number in a hostname.
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518 *
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519 * util_host_port_suffix("foo.com:80") = ":80"
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520 * util_host_port_suffix("foo.com") = NULL
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521 * util_host_port_suffix("[::]:80") = ":80"
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522 * util_host_port_suffix("[::]") = NULL
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parents:
diff changeset
523 */
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parents:
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524
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parents:
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525 if (h == NULL)
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parents:
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526 return h;
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parents:
diff changeset
527
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parents:
diff changeset
528 for (;;) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
529 /* Find end of host, beginning of ":port", or an IPv6 address */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
530 for (;;) {
362
e45f218628cd port uri.cpp to uri.c
Mike Becker <universe@uap-core.de>
parents: 162
diff changeset
531 char c = *h;
1
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
532
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
533 if (c == '\0')
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
534 return NULL; /* end of host, no port found */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
535
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
536 if (c == '/')
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
537 return NULL; /* end of host, no port found */
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
538
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
539 if (c == ':')
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
540 return h; /* found port */
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
541
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
542 if (c == '[')
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
543 break; /* skip IPv6 address */
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
544
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
545 h++;
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parents:
diff changeset
546 }
3c066d52342d added source
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
547
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
548 /* Skip IPv6 address */
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
549 while (*h != '\0' && *h != ']')
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
550 h++;
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parents:
diff changeset
551 }
3c066d52342d added source
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parents:
diff changeset
552 }

mercurial