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1 /* |
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2 * libxml2_xmlio.c : implementation of the I/O interfaces used by the parser |
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3 * |
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4 * See Copyright for the status of this software. |
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5 * |
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6 * daniel@veillard.com |
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7 * |
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8 * 14 Nov 2000 ht - for VMS, truncated name of long functions to under 32 char |
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9 * Portion Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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10 */ |
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11 |
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12 #define IN_LIBXML |
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13 #include "xmlenglibxml.h" |
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14 |
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15 #include <string.h> |
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16 |
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17 #ifdef HAVE_ERRNO_H |
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18 #include <errno.h> |
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19 #endif |
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20 |
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21 #include <stdio.h> |
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22 |
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23 #ifdef HAVE_SYS_TYPES_H |
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24 #include <sys/types.h> |
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25 #endif |
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26 #ifdef HAVE_SYS_STAT_H |
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27 #include <sys/stat.h> |
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28 #endif |
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29 #ifdef HAVE_FCNTL_H |
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30 #include <fcntl.h> |
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31 #endif |
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32 #ifdef HAVE_UNISTD_H |
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33 #include <unistd.h> |
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34 #endif |
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35 #ifdef HAVE_STDLIB_H |
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36 #include <stdlib.h> |
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37 #endif |
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38 #ifdef HAVE_ZLIB_H |
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39 #include <zlib.h> |
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40 #endif |
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41 |
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42 /* Figure a portable way to know if a file is a directory. */ |
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43 #ifndef HAVE_STAT |
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44 # ifdef HAVE__STAT |
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45 /* MS C library seems to define stat and _stat. The definition |
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46 is identical. Still, mapping them to each other causes a warning. */ |
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47 # ifndef _MSC_VER |
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48 # define stat(x,y) _stat(x,y) |
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49 # endif |
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50 # define HAVE_STAT |
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51 # endif |
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52 #endif |
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53 #ifdef HAVE_STAT |
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54 # ifndef S_ISDIR |
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55 # ifdef _S_ISDIR |
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56 # define S_ISDIR(x) _S_ISDIR(x) |
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57 # else |
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58 # ifdef S_IFDIR |
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59 # ifndef S_IFMT |
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60 # ifdef _S_IFMT |
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61 # define S_IFMT _S_IFMT |
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62 # endif |
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63 # endif |
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64 # ifdef S_IFMT |
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65 # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
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66 # endif |
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67 # endif |
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68 # endif |
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69 # endif |
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70 #endif |
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71 |
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72 #include <stdapis/libxml2/libxml2_parserinternals.h> |
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73 #include "libxml2_errencoding.h" |
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74 #include "libxml2_xmlerror2.h" |
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75 #include <stdapis/libxml2/libxml2_uri.h> |
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76 |
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77 #ifdef LIBXML_CATALOG_ENABLED |
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78 #include "libxml2_catalog.h" |
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79 #endif |
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80 |
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81 #include <stdapis/libxml2/libxml2_globals.h> |
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82 |
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83 /* #define VERBOSE_FAILURE */ |
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84 /* #define DEBUG_EXTERNAL_ENTITIES */ |
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85 /* #define DEBUG_INPUT */ |
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86 |
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87 #ifdef DEBUG_INPUT |
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88 #define MINLEN 40 |
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89 #else |
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90 #define MINLEN 4000 |
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91 #endif |
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92 |
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93 |
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94 /************************************************************************ |
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95 * * |
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96 * Tree memory error handler * |
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97 * * |
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98 ************************************************************************/ |
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99 |
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100 #ifndef XMLENGINE_EXCLUDE_EMBED_MSG |
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101 const char * const IOerr[] = { |
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102 EMBED_ERRTXT("Unknown IO error"), /* UNKNOWN */ |
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103 EMBED_ERRTXT("Permission denied"), /* EACCES */ |
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104 EMBED_ERRTXT("Resource temporarily unavailable"), /* EAGAIN */ |
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105 EMBED_ERRTXT("Bad file descriptor"), /* EBADF */ |
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106 EMBED_ERRTXT("Bad message"), /* EBADMSG */ |
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107 EMBED_ERRTXT("Resource busy"), /* EBUSY */ |
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108 EMBED_ERRTXT("Operation canceled"), /* ECANCELED */ |
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109 EMBED_ERRTXT("No child processes"), /* ECHILD */ |
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110 EMBED_ERRTXT("Resource deadlock avoided"), /* EDEADLK */ |
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111 EMBED_ERRTXT("Domain error"), /* EDOM */ |
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112 EMBED_ERRTXT("File exists"), /* EEXIST */ |
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113 EMBED_ERRTXT("Bad address"), /* EFAULT */ |
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114 EMBED_ERRTXT("File too large"), /* EFBIG */ |
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115 EMBED_ERRTXT("Operation in progress"), /* EINPROGRESS */ |
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116 EMBED_ERRTXT("Interrupted function call"), /* EINTR */ |
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117 EMBED_ERRTXT("Invalid argument"), /* EINVAL */ |
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118 EMBED_ERRTXT("Input/output error"), /* EIO */ |
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119 EMBED_ERRTXT("Is a directory"), /* EISDIR */ |
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120 EMBED_ERRTXT("Too many open files"), /* EMFILE */ |
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121 EMBED_ERRTXT("Too many links"), /* EMLINK */ |
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122 EMBED_ERRTXT("Inappropriate message buffer length"),/* EMSGSIZE */ |
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123 EMBED_ERRTXT("Filename too long"), /* ENAMETOOLONG */ |
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124 EMBED_ERRTXT("Too many open files in system"), /* ENFILE */ |
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125 EMBED_ERRTXT("No such device"), /* ENODEV */ |
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126 EMBED_ERRTXT("No such file or directory"), /* ENOENT */ |
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127 EMBED_ERRTXT("Exec format error"), /* ENOEXEC */ |
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128 EMBED_ERRTXT("No locks available"), /* ENOLCK */ |
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129 EMBED_ERRTXT("Not enough space"), /* ENOMEM */ |
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130 EMBED_ERRTXT("No space left on device"), /* ENOSPC */ |
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131 EMBED_ERRTXT("Function not implemented"), /* ENOSYS */ |
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132 EMBED_ERRTXT("Not a directory"), /* ENOTDIR */ |
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133 EMBED_ERRTXT("Directory not empty"), /* ENOTEMPTY */ |
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134 EMBED_ERRTXT("Not supported"), /* ENOTSUP */ |
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135 EMBED_ERRTXT("Inappropriate I/O control operation"),/* ENOTTY */ |
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136 EMBED_ERRTXT("No such device or address"), /* ENXIO */ |
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137 EMBED_ERRTXT("Operation not permitted"), /* EPERM */ |
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138 EMBED_ERRTXT("Broken pipe"), /* EPIPE */ |
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139 EMBED_ERRTXT("Result too large"), /* ERANGE */ |
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140 EMBED_ERRTXT("Read-only file system"), /* EROFS */ |
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141 EMBED_ERRTXT("Invalid seek"), /* ESPIPE */ |
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142 EMBED_ERRTXT("No such process"), /* ESRCH */ |
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143 EMBED_ERRTXT("Operation timed out"), /* ETIMEDOUT */ |
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144 EMBED_ERRTXT("Improper link"), /* EXDEV */ |
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145 EMBED_ERRTXT("Attempt to load network entity %s"), /* XML_IO_NETWORK_ATTEMPT */ |
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146 EMBED_ERRTXT("encoder error"), /* XML_IO_ENCODER */ |
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147 EMBED_ERRTXT("flush error"), |
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148 EMBED_ERRTXT("write error"), |
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149 EMBED_ERRTXT("no input"), |
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150 EMBED_ERRTXT("buffer full"), |
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151 EMBED_ERRTXT("loading error"), |
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152 EMBED_ERRTXT("not a socket"), /* ENOTSOCK */ |
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153 EMBED_ERRTXT("already connected"), /* EISCONN */ |
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154 EMBED_ERRTXT("connection refuxed"), /* ECONNREFUSED */ |
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155 EMBED_ERRTXT("unreachable network"), /* ENETUNREACH */ |
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156 EMBED_ERRTXT("adddress in use"), /* EADDRINUSE */ |
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157 EMBED_ERRTXT("already in use"), /* EALREADY */ |
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158 EMBED_ERRTXT("unknown address familly") /* EAFNOSUPPORT */ |
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159 }; |
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160 #endif /* ! XMLENGINE_EXCLUDE_EMBED_MSG */ |
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161 |
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162 /** |
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163 * xmlIOErrMemory: |
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164 * @param extra extra informations |
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165 * |
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166 * Handle an out of memory condition |
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167 */ |
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168 static void |
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169 xmlIOErrMemory(const char *extra) |
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170 { |
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171 __xmlSimpleError(XML_FROM_IO, XML_ERR_NO_MEMORY, NULL, NULL, extra); |
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172 } |
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173 |
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174 /** |
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175 * __xmlIOErr: |
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176 * @param code the error number |
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177 * @ |
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178 * @param extra extra informations |
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179 * |
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180 * Handle an I/O error |
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181 */ |
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182 void |
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183 __xmlIOErr(int domain, int code, const char *extra) |
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184 { |
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185 // Note: on Symbian 'errno' is a macro for function call |
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186 int _errno = errno; |
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187 if (code == 0) { |
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188 #ifdef HAVE_ERRNO_H |
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189 if (_errno == 0) code = 0; |
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190 #ifdef EACCES |
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191 else if (_errno == EACCES) code = XML_IO_EACCES; |
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192 #endif |
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193 #ifdef EAGAIN |
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194 else if (_errno == EAGAIN) code = XML_IO_EAGAIN; |
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195 #endif |
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196 #ifdef EBADF |
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197 else if (_errno == EBADF) code = XML_IO_EBADF; |
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198 #endif |
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199 #ifdef EBADMSG |
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200 else if (_errno == EBADMSG) code = XML_IO_EBADMSG; |
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201 #endif |
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202 #ifdef EBUSY |
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203 else if (_errno == EBUSY) code = XML_IO_EBUSY; |
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204 #endif |
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205 #ifdef ECANCELED |
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206 else if (_errno == ECANCELED) code = XML_IO_ECANCELED; |
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207 #endif |
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208 #ifdef ECHILD |
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209 else if (_errno == ECHILD) code = XML_IO_ECHILD; |
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210 #endif |
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211 #ifdef EDEADLK |
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212 else if (_errno == EDEADLK) code = XML_IO_EDEADLK; |
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213 #endif |
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214 #ifdef EDOM |
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215 else if (_errno == EDOM) code = XML_IO_EDOM; |
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216 #endif |
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217 #ifdef EEXIST |
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218 else if (_errno == EEXIST) code = XML_IO_EEXIST; |
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219 #endif |
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220 #ifdef EFAULT |
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221 else if (_errno == EFAULT) code = XML_IO_EFAULT; |
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222 #endif |
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223 #ifdef EFBIG |
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224 else if (_errno == EFBIG) code = XML_IO_EFBIG; |
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225 #endif |
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226 #ifdef EINPROGRESS |
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227 else if (_errno == EINPROGRESS) code = XML_IO_EINPROGRESS; |
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228 #endif |
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229 #ifdef EINTR |
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230 else if (_errno == EINTR) code = XML_IO_EINTR; |
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231 #endif |
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232 #ifdef EINVAL |
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233 else if (_errno == EINVAL) code = XML_IO_EINVAL; |
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234 #endif |
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235 #ifdef EIO |
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236 else if (_errno == EIO) code = XML_IO_EIO; |
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237 #endif |
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238 #ifdef EISDIR |
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239 else if (_errno == EISDIR) code = XML_IO_EISDIR; |
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240 #endif |
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241 #ifdef EMFILE |
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242 else if (_errno == EMFILE) code = XML_IO_EMFILE; |
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243 #endif |
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244 #ifdef EMLINK |
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245 else if (_errno == EMLINK) code = XML_IO_EMLINK; |
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246 #endif |
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247 #ifdef EMSGSIZE |
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248 else if (_errno == EMSGSIZE) code = XML_IO_EMSGSIZE; |
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249 #endif |
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250 #ifdef ENAMETOOLONG |
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251 else if (_errno == ENAMETOOLONG) code = XML_IO_ENAMETOOLONG; |
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252 #endif |
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253 #ifdef ENFILE |
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254 else if (_errno == ENFILE) code = XML_IO_ENFILE; |
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255 #endif |
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256 #ifdef ENODEV |
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257 else if (_errno == ENODEV) code = XML_IO_ENODEV; |
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258 #endif |
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259 #ifdef ENOENT |
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260 else if (_errno == ENOENT) code = XML_IO_ENOENT; |
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261 #endif |
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262 #ifdef ENOEXEC |
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263 else if (_errno == ENOEXEC) code = XML_IO_ENOEXEC; |
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264 #endif |
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265 #ifdef ENOLCK |
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266 else if (_errno == ENOLCK) code = XML_IO_ENOLCK; |
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267 #endif |
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268 #ifdef ENOMEM |
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269 else if (_errno == ENOMEM) code = XML_IO_ENOMEM; |
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270 #endif |
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271 #ifdef ENOSPC |
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272 else if (_errno == ENOSPC) code = XML_IO_ENOSPC; |
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273 #endif |
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274 #ifdef ENOSYS |
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275 else if (_errno == ENOSYS) code = XML_IO_ENOSYS; |
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276 #endif |
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277 #ifdef ENOTDIR |
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278 else if (_errno == ENOTDIR) code = XML_IO_ENOTDIR; |
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279 #endif |
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280 #ifdef ENOTEMPTY |
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281 else if (_errno == ENOTEMPTY) code = XML_IO_ENOTEMPTY; |
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282 #endif |
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283 #ifdef ENOTSUP |
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284 else if (_errno == ENOTSUP) code = XML_IO_ENOTSUP; |
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285 #endif |
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286 #ifdef ENOTTY |
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287 else if (_errno == ENOTTY) code = XML_IO_ENOTTY; |
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288 #endif |
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289 #ifdef ENXIO |
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290 else if (_errno == ENXIO) code = XML_IO_ENXIO; |
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291 #endif |
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292 #ifdef EPERM |
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293 else if (_errno == EPERM) code = XML_IO_EPERM; |
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294 #endif |
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295 #ifdef EPIPE |
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296 else if (_errno == EPIPE) code = XML_IO_EPIPE; |
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297 #endif |
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298 #ifdef ERANGE |
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299 else if (_errno == ERANGE) code = XML_IO_ERANGE; |
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300 #endif |
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301 #ifdef EROFS |
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302 else if (_errno == EROFS) code = XML_IO_EROFS; |
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303 #endif |
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304 #ifdef ESPIPE |
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305 else if (_errno == ESPIPE) code = XML_IO_ESPIPE; |
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306 #endif |
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307 #ifdef ESRCH |
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308 else if (_errno == ESRCH) code = XML_IO_ESRCH; |
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309 #endif |
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310 #ifdef ETIMEDOUT |
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311 else if (_errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT; |
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312 #endif |
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313 #ifdef EXDEV |
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314 else if (_errno == EXDEV) code = XML_IO_EXDEV; |
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315 #endif |
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316 #ifdef ENOTSOCK |
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317 else if (_errno == ENOTSOCK) code = XML_IO_ENOTSOCK; |
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318 #endif |
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319 #ifdef EISCONN |
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320 else if (_errno == EISCONN) code = XML_IO_EISCONN; |
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321 #endif |
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322 #ifdef ECONNREFUSED |
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323 else if (_errno == ECONNREFUSED) code = XML_IO_ECONNREFUSED; |
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324 #endif |
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325 #ifdef ETIMEDOUT |
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326 else if (_errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT; |
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327 #endif |
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328 #ifdef ENETUNREACH |
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329 else if (_errno == ENETUNREACH) code = XML_IO_ENETUNREACH; |
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330 #endif |
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331 #ifdef EADDRINUSE |
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332 else if (_errno == EADDRINUSE) code = XML_IO_EADDRINUSE; |
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333 #endif |
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334 #ifdef EINPROGRESS |
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335 else if (_errno == EINPROGRESS) code = XML_IO_EINPROGRESS; |
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336 #endif |
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337 #ifdef EALREADY |
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338 else if (_errno == EALREADY) code = XML_IO_EALREADY; |
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339 #endif |
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340 #ifdef EAFNOSUPPORT |
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341 else if (_errno == EAFNOSUPPORT) code = XML_IO_EAFNOSUPPORT; |
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342 #endif |
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343 else code = XML_IO_UNKNOWN; |
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344 #endif /* HAVE_ERRNO_H */ |
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345 } |
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346 |
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347 #if defined(LIBXML_OUTPUT_ENABLED) && !defined(XMLENGINE_EXCLUDE_EMBED_MSG) |
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348 { |
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349 unsigned int idx = 0; |
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350 if (code >= XML_IO_UNKNOWN) idx = code - XML_IO_UNKNOWN; |
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351 |
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352 // DONE: disable this branch if error messages are stripped from sources (and then disable IOerr array too) |
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353 if (idx >= (sizeof(IOerr) / sizeof(IOerr[0]))) |
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354 idx = 0; |
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355 __xmlSimpleError(domain, code, NULL, IOerr[idx], extra); |
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356 } |
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357 #else |
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358 // No error messages used.. |
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359 __xmlSimpleError(domain, code, NULL, EMBED_ERRTXT("IOError"), extra); |
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360 #endif /* LIBXML_OUTPUT_ENABLED */ |
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361 } |
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362 |
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363 /** |
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364 * xmlIOErr: |
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365 * @param code the error number |
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366 * @param extra extra informations |
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367 * |
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368 * Handle an I/O error |
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369 */ |
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370 static void |
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371 xmlIOErr(int code, const char *extra) |
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372 { |
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373 __xmlIOErr(XML_FROM_IO, code, extra); |
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374 } |
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375 |
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376 /** |
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377 * __xmlLoaderErr: |
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378 * @param ctx the parser context |
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379 * @param extra extra informations |
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380 * |
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381 * Handle a resource access error |
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382 */ |
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383 void |
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384 __xmlLoaderErr(void *ctx, const char *msg, const char *filename) |
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385 { |
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386 xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx; |
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387 xmlStructuredErrorFunc schannel = NULL; |
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388 xmlGenericErrorFunc channel = NULL; |
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389 void *data = NULL; |
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390 xmlErrorLevel level = XML_ERR_ERROR; |
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391 |
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392 if ((ctxt != NULL) && (ctxt->disableSAX != 0) && |
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393 (ctxt->instate == XML_PARSER_EOF)) |
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394 return; |
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395 if ((ctxt != NULL) && (ctxt->sax != NULL)) { |
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396 if (ctxt->validate) { |
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397 channel = ctxt->sax->error; |
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398 level = XML_ERR_ERROR; |
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399 } else { |
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400 channel = ctxt->sax->warning; |
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401 level = XML_ERR_WARNING; |
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402 } |
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403 schannel = ctxt->sax->serror; |
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404 data = ctxt->userData; |
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405 } |
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406 __xmlRaiseError(schannel, channel, data, ctxt, NULL, XML_FROM_IO, |
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407 XML_IO_LOAD_ERROR, level, NULL, 0, |
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408 filename, NULL, NULL, 0, 0, |
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409 msg, filename); |
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410 |
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411 } |
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412 |
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413 /************************************************************************ |
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414 * * |
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415 * Tree memory error handler * |
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416 * * |
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417 ************************************************************************/ |
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418 |
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419 /** |
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420 * xmlCleanupInputCallbacks: |
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421 * |
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422 * clears the entire input callback table. this includes the |
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423 * compiled-in I/O. |
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424 * |
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425 * OOM: never |
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426 */ |
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427 XMLPUBFUNEXPORT void |
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428 xmlCleanupInputCallbacks(void) |
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429 { |
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430 LOAD_GS_DIRECT |
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431 int i; |
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432 |
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433 if (!xmlInputCallbackInitialized) |
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434 return; |
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435 |
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436 for (i = xmlInputCallbackNr - 1; i >= 0; i--) { |
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437 xmlInputCallbackTable[i].matchcallback = NULL; |
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438 xmlInputCallbackTable[i].opencallback = NULL; |
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439 xmlInputCallbackTable[i].readcallback = NULL; |
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440 xmlInputCallbackTable[i].closecallback = NULL; |
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441 } |
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442 |
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443 xmlInputCallbackNr = 0; |
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444 xmlInputCallbackInitialized = 0; |
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445 } |
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446 |
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447 /** |
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448 * xmlPopInputCallback: |
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449 * |
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450 * Clear the top input callback from the input stack. this includes the |
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451 * compiled-in I/O. |
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452 * |
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453 * Returns the number of input callback registered or -1 in case of error. |
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454 */ |
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455 XMLPUBFUNEXPORT int |
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456 xmlPopInputCallbacks(void) |
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457 { |
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458 LOAD_GS_DIRECT |
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459 if (!xmlInputCallbackInitialized) |
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460 return(-1); |
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461 |
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462 if (xmlInputCallbackNr <= 0) |
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463 return(-1); |
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464 |
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465 xmlInputCallbackNr--; |
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466 xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = NULL; |
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467 xmlInputCallbackTable[xmlInputCallbackNr].opencallback = NULL; |
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468 xmlInputCallbackTable[xmlInputCallbackNr].readcallback = NULL; |
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469 xmlInputCallbackTable[xmlInputCallbackNr].closecallback = NULL; |
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470 |
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471 return(xmlInputCallbackNr); |
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472 } |
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473 |
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474 #ifdef LIBXML_OUTPUT_ENABLED |
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475 /** |
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476 * xmlCleanupOutputCallbacks: |
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477 * |
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478 * clears the entire output callback table. this includes the |
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479 * compiled-in I/O callbacks. |
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480 */ |
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481 XMLPUBFUNEXPORT void |
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482 xmlCleanupOutputCallbacks(void) |
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483 { |
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484 LOAD_GS_DIRECT |
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485 int i; |
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486 |
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487 if (!xmlOutputCallbackInitialized) |
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488 return; |
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489 |
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490 for (i = xmlOutputCallbackNr - 1; i >= 0; i--) { |
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491 xmlOutputCallbackTable[i].matchcallback = NULL; |
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492 xmlOutputCallbackTable[i].opencallback = NULL; |
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493 xmlOutputCallbackTable[i].writecallback = NULL; |
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494 xmlOutputCallbackTable[i].closecallback = NULL; |
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495 } |
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496 |
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497 xmlOutputCallbackNr = 0; |
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498 xmlOutputCallbackInitialized = 0; |
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499 } |
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500 #endif /* LIBXML_OUTPUT_ENABLED */ |
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501 |
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502 /************************************************************************ |
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503 * * |
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504 * Standard I/O for file accesses * |
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505 * * |
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506 ************************************************************************/ |
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507 |
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508 /** |
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509 * xmlCheckFilename: |
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510 * @param path the path to check |
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511 * |
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512 * function checks to see if path is a valid source |
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513 * (file, socket...) for XML. |
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514 * |
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515 * if stat is not available on the target machine, |
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516 * returns 1. if stat fails, returns 0 (if calling |
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517 * stat on the filename fails, it can't be right). |
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518 * if stat succeeds and the file is a directory, |
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519 * returns 2. otherwise returns 1. |
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520 */ |
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521 #include <sys/stat.h> |
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522 XMLPUBFUNEXPORT int |
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523 xmlCheckFilename (const char* path) |
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524 { |
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525 #ifdef HAVE_STAT |
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526 struct stat stat_buffer; |
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527 |
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528 if (stat(path, &stat_buffer) == -1) |
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529 return 0; |
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530 |
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531 #ifdef S_ISDIR |
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532 if (S_ISDIR(stat_buffer.st_mode)) { |
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533 return 2; |
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534 } |
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535 #endif |
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536 #endif |
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537 return 1; |
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538 } |
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539 |
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540 static int |
|
541 xmlNop(void) { |
|
542 return(0); |
|
543 } |
|
544 |
|
545 /** |
|
546 * xmlFdRead: |
|
547 * @param context the I/O context |
|
548 * @param buffer where to drop data |
|
549 * @param len number of bytes to read |
|
550 * |
|
551 * Read len bytes to buffer from the I/O channel. |
|
552 * |
|
553 * Returns the number of bytes written |
|
554 */ |
|
555 static int |
|
556 xmlFdRead (void * context, char * buffer, int len) { |
|
557 int ret; |
|
558 |
|
559 ret = read((int) (long) context, &buffer[0], len); |
|
560 if (ret < 0) xmlIOErr(0, EMBED_ERRTXT("read()")); |
|
561 return(ret); |
|
562 } |
|
563 |
|
564 #ifdef LIBXML_OUTPUT_ENABLED |
|
565 /** |
|
566 * xmlFdWrite: |
|
567 * @param context the I/O context |
|
568 * @param buffer where to get data |
|
569 * @param len number of bytes to write |
|
570 * |
|
571 * Write len bytes from buffer to the I/O channel. |
|
572 * |
|
573 * Returns the number of bytes written |
|
574 */ |
|
575 static int |
|
576 xmlFdWrite (void * context, const char * buffer, int len) { |
|
577 int ret; |
|
578 |
|
579 ret = write((int) (long) context, &buffer[0], len); |
|
580 if (ret < 0) xmlIOErr(0, "write()"); |
|
581 return(ret); |
|
582 } |
|
583 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
584 |
|
585 /** |
|
586 * xmlFdClose: |
|
587 * @param context the I/O context |
|
588 * |
|
589 * Close an I/O channel |
|
590 * |
|
591 * Returns 0 in case of success and error code otherwise |
|
592 */ |
|
593 static int |
|
594 xmlFdClose (void * context) { |
|
595 int ret; |
|
596 ret = close((int) (long) context); |
|
597 if (ret < 0) xmlIOErr(0, EMBED_ERRTXT("close()")); |
|
598 return(ret); |
|
599 } |
|
600 |
|
601 /** |
|
602 * xmlFileMatch: |
|
603 * @param filename the URI for matching |
|
604 * |
|
605 * input from FILE * |
|
606 * |
|
607 * Returns 1 if matches, 0 otherwise |
|
608 */ |
|
609 XMLPUBFUNEXPORT int |
|
610 xmlFileMatch (const char* filename ATTRIBUTE_UNUSED) { |
|
611 return(1); |
|
612 } |
|
613 |
|
614 // XMLENGINE: NEW CODE: xmlFileOpen_common |
|
615 // --> common method extracted from xmlFileOpenW and xmlFileOpen_real; |
|
616 // --> Slashes-handling code added for Symbian UREL builds |
|
617 /* |
|
618 * |
|
619 * |
|
620 */ |
|
621 static void* |
|
622 xmlFileOpen_common(const char* filename, const char* mode) |
|
623 { |
|
624 FILE* fd; |
|
625 char* p; |
|
626 char* rpath; |
|
627 const char* path = filename; |
|
628 |
|
629 if (!path) |
|
630 return(NULL); |
|
631 |
|
632 if(filename[0] == 'f' && filename[1] == 'i') |
|
633 { |
|
634 if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) |
|
635 path = &filename[17]; |
|
636 else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) |
|
637 path = &filename[8]; |
|
638 } |
|
639 |
|
640 // Convert all slashes into backslashes |
|
641 |
|
642 path = rpath = p = (char*) xmlStrdup((const xmlChar*) path); |
|
643 if(!p) |
|
644 return NULL; |
|
645 |
|
646 for(; *p; p++){ |
|
647 if(*p == '/') |
|
648 *p = '\\'; |
|
649 } |
|
650 |
|
651 fd = fopen(path, mode); |
|
652 CHECK_ERRNO; |
|
653 |
|
654 if (!fd){ |
|
655 xmlIOErr(0, path); |
|
656 } |
|
657 |
|
658 xmlFree(rpath); |
|
659 return((void*) fd); |
|
660 } |
|
661 |
|
662 /** |
|
663 * xmlFileOpen_real: |
|
664 * @param filename the URI for matching |
|
665 * |
|
666 * input from FILE *, supports compressed input |
|
667 * if filename is " " then the standard input is used |
|
668 * |
|
669 * Returns an I/O context or NULL in case of error |
|
670 * |
|
671 * OOM: possible --> OOM flag is set |
|
672 */ |
|
673 void* |
|
674 xmlFileOpen_real (const char* filename) |
|
675 { |
|
676 if (filename && filename[0] == '-' && !filename[1]) |
|
677 return((void *) stdin); |
|
678 else |
|
679 return xmlFileOpen_common(filename, "r"); // Symbian case is here, right ? |
|
680 } |
|
681 |
|
682 /** |
|
683 * xmlFileOpen: |
|
684 * @param filename the URI for matching |
|
685 * |
|
686 * Wrapper around xmlFileOpen_real that try it with an unescaped |
|
687 * version of filename, if this fails fallback to filename |
|
688 * |
|
689 * Returns a handler or NULL in case or failure |
|
690 */ |
|
691 XMLPUBFUNEXPORT void* |
|
692 xmlFileOpen (const char* filename) { |
|
693 char* unescaped; |
|
694 void* retval; |
|
695 |
|
696 unescaped = xmlURIUnescapeString(filename, 0, NULL); |
|
697 retval = xmlFileOpen_real(unescaped ? unescaped : filename); |
|
698 |
|
699 if(unescaped) |
|
700 xmlFree(unescaped); |
|
701 return retval; |
|
702 } |
|
703 |
|
704 #ifdef LIBXML_OUTPUT_ENABLED |
|
705 /** |
|
706 * xmlFileOpenW: |
|
707 * @param filename the URI for matching |
|
708 * |
|
709 * output to from FILE *, |
|
710 * if filename is "-" then the standard output is used |
|
711 * |
|
712 * Returns an I/O context or NULL in case of error |
|
713 * |
|
714 * OOM: possible --> OOM flag is set |
|
715 */ |
|
716 static void* |
|
717 xmlFileOpenW (const char* filename) |
|
718 { |
|
719 if (filename && filename[0] == '-' && !filename[1]) |
|
720 return((void*) stdout); |
|
721 else |
|
722 return xmlFileOpen_common(filename, "wb"); |
|
723 } |
|
724 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
725 |
|
726 |
|
727 /** |
|
728 * xmlFileRead: |
|
729 * @param context the I/O context |
|
730 * @param buffer where to drop data |
|
731 * @param len number of bytes to write |
|
732 * |
|
733 * Read len bytes to buffer from the I/O channel. |
|
734 * |
|
735 * Returns the number of bytes written |
|
736 */ |
|
737 XMLPUBFUNEXPORT int |
|
738 xmlFileRead (void* context, char* buffer, int len) |
|
739 { |
|
740 int ret = fread(&buffer[0], 1, len, (FILE*) context); |
|
741 if (ret < 0) { |
|
742 CHECK_ERRNO; |
|
743 xmlIOErr(0, EMBED_ERRTXT("fread()")); |
|
744 } |
|
745 return(ret); |
|
746 } |
|
747 |
|
748 |
|
749 #ifdef LIBXML_OUTPUT_ENABLED |
|
750 /** |
|
751 * xmlFileWrite: |
|
752 * @param context the I/O context |
|
753 * @param buffer where to drop data |
|
754 * @param len number of bytes to write |
|
755 * |
|
756 * Write len bytes from buffer to the I/O channel. |
|
757 * |
|
758 * Returns the number of bytes written |
|
759 */ |
|
760 //static |
|
761 int |
|
762 xmlFileWrite (void* context, const char* buffer, int len) |
|
763 { |
|
764 int items = fwrite(&buffer[0], len, 1, (FILE*) context); |
|
765 |
|
766 if (items == EOF || |
|
767 (items == 0 && ferror((FILE*) context))) |
|
768 { |
|
769 CHECK_ERRNO; |
|
770 xmlIOErr(0, EMBED_ERRTXT("fwrite()")); |
|
771 return(-1); |
|
772 } |
|
773 return(items * len); |
|
774 } |
|
775 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
776 |
|
777 |
|
778 |
|
779 /** |
|
780 * xmlFileClose: |
|
781 * @param context the I/O context |
|
782 * |
|
783 * Close an I/O channel |
|
784 * |
|
785 * Returns 0 or -1 in case of error |
|
786 */ |
|
787 XMLPUBFUNEXPORT int |
|
788 xmlFileClose (void* context) |
|
789 { |
|
790 FILE* fil; |
|
791 int ret; |
|
792 |
|
793 fil = (FILE*) context; |
|
794 if ((fil == stdout) || (fil == stderr)) { |
|
795 ret = fflush(fil); |
|
796 if (ret < 0){ |
|
797 CHECK_ERRNO; |
|
798 xmlIOErr(0, EMBED_ERRTXT("fflush()")); |
|
799 } |
|
800 return(0); |
|
801 } |
|
802 if (fil == stdin) |
|
803 return(0); |
|
804 ret = ( fclose((FILE*) context) == EOF ) ? -1 : 0; |
|
805 if (ret < 0){ |
|
806 CHECK_ERRNO; |
|
807 xmlIOErr(0, EMBED_ERRTXT("fclose()")); |
|
808 } |
|
809 return(ret); |
|
810 } |
|
811 |
|
812 /** |
|
813 * xmlFileFlush: |
|
814 * @param context the I/O context |
|
815 * |
|
816 * Flush an I/O channel |
|
817 */ |
|
818 static int |
|
819 xmlFileFlush (void * context) |
|
820 { |
|
821 int ret = (fflush((FILE *) context) == EOF) ? -1 : 0; |
|
822 if (ret < 0){ |
|
823 CHECK_ERRNO; |
|
824 xmlIOErr(0, EMBED_ERRTXT("fflush()")); |
|
825 } |
|
826 return(ret); |
|
827 } |
|
828 |
|
829 |
|
830 #ifdef HAVE_ZLIB_H |
|
831 /************************************************************************ |
|
832 * * |
|
833 * I/O for compressed file accesses * |
|
834 * * |
|
835 ************************************************************************/ |
|
836 /** |
|
837 * xmlGzfileMatch: |
|
838 * @param filename the URI for matching |
|
839 * |
|
840 * input from compressed file test |
|
841 * |
|
842 * Returns 1 if matches, 0 otherwise |
|
843 */ |
|
844 static int |
|
845 xmlGzfileMatch (const char* filename ATTRIBUTE_UNUSED) |
|
846 { |
|
847 return(1); |
|
848 } |
|
849 |
|
850 /** |
|
851 * xmlGzfileOpen_real: |
|
852 * @param filename the URI for matching |
|
853 * |
|
854 * input from compressed file open |
|
855 * if filename is " " then the standard input is used |
|
856 * |
|
857 * Returns an I/O context or NULL in case of error |
|
858 */ |
|
859 static void* |
|
860 xmlGzfileOpen_real (const char *filename) |
|
861 { |
|
862 const char *path = NULL; |
|
863 gzFile fd; |
|
864 |
|
865 if (!strcmp(filename, "-")) { |
|
866 fd = gzdopen(dup(0), "rb"); |
|
867 return((void *) fd); |
|
868 } |
|
869 |
|
870 if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) |
|
871 path = &filename[17]; |
|
872 else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { |
|
873 path = &filename[8]; |
|
874 } else |
|
875 path = filename; |
|
876 |
|
877 if (path == NULL) |
|
878 return(NULL); |
|
879 if (!xmlCheckFilename(path)) |
|
880 return(NULL); |
|
881 |
|
882 fd = gzopen(path, "rb"); |
|
883 return((void *) fd); |
|
884 } |
|
885 |
|
886 /** |
|
887 * xmlGzfileOpen: |
|
888 * @param filename the URI for matching |
|
889 * |
|
890 * Wrapper around xmlGzfileOpen if the open fais, it will |
|
891 * try to unescape filename |
|
892 */ |
|
893 static void* |
|
894 xmlGzfileOpen (const char* filename) |
|
895 { |
|
896 char* unescaped; |
|
897 void* retval; |
|
898 |
|
899 retval = xmlGzfileOpen_real(filename); |
|
900 if (retval == NULL) { |
|
901 unescaped = xmlURIUnescapeString(filename, 0, NULL); |
|
902 if (unescaped != NULL) { |
|
903 retval = xmlGzfileOpen_real(unescaped); |
|
904 } |
|
905 xmlFree(unescaped); |
|
906 } |
|
907 return retval; |
|
908 } |
|
909 |
|
910 #ifdef LIBXML_OUTPUT_ENABLED |
|
911 /** |
|
912 * xmlGzfileOpenW: |
|
913 * @param filename the URI for matching |
|
914 * @param compression the compression factor (0 - 9 included) |
|
915 * |
|
916 * input from compressed file open |
|
917 * if filename is " " then the standard input is used |
|
918 * |
|
919 * Returns an I/O context or NULL in case of error |
|
920 */ |
|
921 static void* |
|
922 xmlGzfileOpenW (const char *filename, int compression) |
|
923 { |
|
924 const char* path = NULL; |
|
925 char mode[15]; |
|
926 gzFile fd; |
|
927 |
|
928 snprintf(mode, sizeof(mode), "wb%d", compression); |
|
929 if (!strcmp(filename, "-")) { |
|
930 fd = gzdopen(dup(1), mode); |
|
931 return((void *) fd); |
|
932 } |
|
933 |
|
934 if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) |
|
935 path = &filename[17]; |
|
936 else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { |
|
937 path = &filename[8]; |
|
938 } else |
|
939 path = filename; |
|
940 |
|
941 if (path == NULL) |
|
942 return(NULL); |
|
943 |
|
944 fd = gzopen(path, mode); |
|
945 return((void *) fd); |
|
946 } |
|
947 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
948 |
|
949 /** |
|
950 * xmlGzfileRead: |
|
951 * @param context the I/O context |
|
952 * @param buffer where to drop data |
|
953 * @param len number of bytes to write |
|
954 * |
|
955 * Read len bytes to buffer from the compressed I/O channel. |
|
956 * |
|
957 * Returns the number of bytes written |
|
958 */ |
|
959 static int |
|
960 xmlGzfileRead (void * context, char * buffer, int len) |
|
961 { |
|
962 int ret; |
|
963 |
|
964 ret = gzread((gzFile) context, &buffer[0], len); |
|
965 if (ret < 0) xmlIOErr(0, EMBED_ERRTXT("gzread()")); |
|
966 return(ret); |
|
967 } |
|
968 |
|
969 #ifdef LIBXML_OUTPUT_ENABLED |
|
970 /** |
|
971 * xmlGzfileWrite: |
|
972 * @param context the I/O context |
|
973 * @param buffer where to drop data |
|
974 * @param len number of bytes to write |
|
975 * |
|
976 * Write len bytes from buffer to the compressed I/O channel. |
|
977 * |
|
978 * Returns the number of bytes written |
|
979 */ |
|
980 static int |
|
981 xmlGzfileWrite (void * context, const char * buffer, int len) |
|
982 { |
|
983 int ret; |
|
984 |
|
985 ret = gzwrite((gzFile) context, (char *) &buffer[0], len); |
|
986 if (ret < 0) xmlIOErr(0, EMBED_ERRTXT("gzwrite()")); |
|
987 return(ret); |
|
988 } |
|
989 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
990 |
|
991 /** |
|
992 * xmlGzfileClose: |
|
993 * @param context the I/O context |
|
994 * |
|
995 * Close a compressed I/O channel |
|
996 */ |
|
997 static int |
|
998 xmlGzfileClose (void * context) |
|
999 { |
|
1000 int ret; |
|
1001 |
|
1002 ret = (gzclose((gzFile) context) == Z_OK ) ? 0 : -1; |
|
1003 if (ret < 0) xmlIOErr(0, EMBED_ERRTXT("gzclose()")); |
|
1004 return(ret); |
|
1005 } |
|
1006 #endif /* HAVE_ZLIB_H */ |
|
1007 |
|
1008 #ifdef LIBXML_HTTP_ENABLED |
|
1009 /************************************************************************ |
|
1010 * * |
|
1011 * I/O for HTTP file accesses * |
|
1012 * * |
|
1013 ************************************************************************/ |
|
1014 |
|
1015 #ifdef LIBXML_OUTPUT_ENABLED |
|
1016 typedef struct xmlIOHTTPWriteCtxt_ |
|
1017 { |
|
1018 int compression; |
|
1019 char * uri; |
|
1020 void * doc_buff; |
|
1021 } xmlIOHTTPWriteCtxt, *xmlIOHTTPWriteCtxtPtr; |
|
1022 |
|
1023 #ifdef HAVE_ZLIB_H |
|
1024 |
|
1025 #define DFLT_WBITS ( -15 ) |
|
1026 #define DFLT_MEM_LVL ( 8 ) |
|
1027 #define GZ_MAGIC1 ( 0x1f ) |
|
1028 #define GZ_MAGIC2 ( 0x8b ) |
|
1029 #define LXML_ZLIB_OS_CODE ( 0x03 ) |
|
1030 #define INIT_HTTP_BUFF_SIZE ( 32768 ) |
|
1031 #define DFLT_ZLIB_RATIO ( 5 ) |
|
1032 |
|
1033 /* |
|
1034 ** Data structure and functions to work with sending compressed data |
|
1035 ** via HTTP. |
|
1036 */ |
|
1037 |
|
1038 typedef struct xmlZMemBuff_ |
|
1039 { |
|
1040 unsigned long size; |
|
1041 unsigned long crc; |
|
1042 unsigned char * zbuff; |
|
1043 z_stream zctrl; |
|
1044 |
|
1045 } xmlZMemBuff, *xmlZMemBuffPtr; |
|
1046 |
|
1047 /** |
|
1048 * append_reverse_ulong |
|
1049 * @param buff Compressed memory buffer |
|
1050 * @param data Unsigned long to append |
|
1051 * |
|
1052 * Append a unsigned long in reverse byte order to the end of the |
|
1053 * memory buffer. |
|
1054 */ |
|
1055 static void |
|
1056 append_reverse_ulong( xmlZMemBuff * buff, unsigned long data ) |
|
1057 { |
|
1058 int idx; |
|
1059 |
|
1060 if ( buff == NULL ) |
|
1061 return; |
|
1062 |
|
1063 /* |
|
1064 ** This is plagiarized from putLong in gzio.c (zlib source) where |
|
1065 ** the number "4" is hardcoded. If zlib is ever patched to |
|
1066 ** support 64 bit file sizes, this code would need to be patched |
|
1067 ** as well. |
|
1068 */ |
|
1069 |
|
1070 for ( idx = 0; idx < 4; idx++ ) { |
|
1071 *buff->zctrl.next_out = ( data & 0xff ); |
|
1072 data >>= 8; |
|
1073 buff->zctrl.next_out++; |
|
1074 } |
|
1075 |
|
1076 return; |
|
1077 } |
|
1078 |
|
1079 /** |
|
1080 * |
|
1081 * xmlFreeZMemBuff |
|
1082 * @param buff The memory buffer context to clear |
|
1083 * |
|
1084 * Release all the resources associated with the compressed memory buffer. |
|
1085 */ |
|
1086 static void |
|
1087 xmlFreeZMemBuff( xmlZMemBuffPtr buff ) |
|
1088 { |
|
1089 #ifdef DEBUG_HTTP |
|
1090 int z_err; |
|
1091 #endif |
|
1092 |
|
1093 if ( buff == NULL ) |
|
1094 return; |
|
1095 |
|
1096 xmlFree( buff->zbuff ); |
|
1097 #ifdef DEBUG_HTTP |
|
1098 z_err = deflateEnd( &buff->zctrl ); |
|
1099 if ( z_err != Z_OK ) |
|
1100 xmlGenericError( xmlGenericErrorContext, |
|
1101 EMBED_ERRTXT("xmlFreeZMemBuff: Error releasing zlib context: %d\n"), |
|
1102 z_err ); |
|
1103 #else |
|
1104 deflateEnd( &buff->zctrl ); |
|
1105 #endif |
|
1106 |
|
1107 xmlFree( buff ); |
|
1108 return; |
|
1109 } |
|
1110 |
|
1111 /** |
|
1112 * xmlCreateZMemBuff |
|
1113 *@param compression Compression value to use |
|
1114 * |
|
1115 * Create a memory buffer to hold the compressed XML document. The |
|
1116 * compressed document in memory will end up being identical to what |
|
1117 * would be created if gzopen/gzwrite/gzclose were being used to |
|
1118 * write the document to disk. The code for the header/trailer data to |
|
1119 * the compression is plagiarized from the zlib source files. |
|
1120 */ |
|
1121 static void * |
|
1122 xmlCreateZMemBuff( int compression ) |
|
1123 { |
|
1124 int z_err; |
|
1125 int hdr_lgth; |
|
1126 xmlZMemBuffPtr buff = NULL; |
|
1127 |
|
1128 if ( ( compression < 1 ) || ( compression > 9 ) ) |
|
1129 return ( NULL ); |
|
1130 |
|
1131 /* Create the control and data areas */ |
|
1132 |
|
1133 buff = xmlMalloc( sizeof( xmlZMemBuff ) ); |
|
1134 if ( buff == NULL ) { |
|
1135 xmlIOErrMemory(EMBED_ERRTXT("creating buffer context")); |
|
1136 return ( NULL ); |
|
1137 } |
|
1138 |
|
1139 (void)memset( buff, 0, sizeof( xmlZMemBuff ) ); |
|
1140 buff->size = INIT_HTTP_BUFF_SIZE; |
|
1141 buff->zbuff = xmlMalloc( buff->size ); |
|
1142 if ( buff->zbuff == NULL ) { |
|
1143 xmlFreeZMemBuff( buff ); |
|
1144 xmlIOErrMemory(EMBED_ERRTXT("creating buffer")); |
|
1145 return ( NULL ); |
|
1146 } |
|
1147 |
|
1148 z_err = deflateInit2( &buff->zctrl, compression, Z_DEFLATED, |
|
1149 DFLT_WBITS, DFLT_MEM_LVL, Z_DEFAULT_STRATEGY ); |
|
1150 if ( z_err != Z_OK ) { |
|
1151 xmlChar msg[500]; |
|
1152 xmlFreeZMemBuff( buff ); |
|
1153 buff = NULL; |
|
1154 xmlStrPrintf(msg, 500, |
|
1155 (const xmlChar *) EMBED_ERRTXT("xmlCreateZMemBuff: %s %d\n"), |
|
1156 EMBED_ERRTXT("Error initializing compression context. ZLIB error:"), |
|
1157 z_err ); |
|
1158 xmlIOErr(XML_IO_WRITE, (const char *) msg); |
|
1159 return ( NULL ); |
|
1160 } |
|
1161 |
|
1162 /* Set the header data. The CRC will be needed for the trailer */ |
|
1163 buff->crc = crc32( 0L, Z_NULL, 0 ); |
|
1164 hdr_lgth = snprintf( (char *)buff->zbuff, buff->size, |
|
1165 "%c%c%c%c%c%c%c%c%c%c", |
|
1166 GZ_MAGIC1, GZ_MAGIC2, Z_DEFLATED, |
|
1167 0, 0, 0, 0, 0, 0, LXML_ZLIB_OS_CODE ); |
|
1168 buff->zctrl.next_out = buff->zbuff + hdr_lgth; |
|
1169 buff->zctrl.avail_out = buff->size - hdr_lgth; |
|
1170 |
|
1171 return ( buff ); |
|
1172 } |
|
1173 |
|
1174 /** |
|
1175 * xmlZMemBuffExtend |
|
1176 * @param buff Buffer used to compress and consolidate data. |
|
1177 * @param ext_amt Number of bytes to extend the buffer. |
|
1178 * |
|
1179 * Extend the internal buffer used to store the compressed data by the |
|
1180 * specified amount. |
|
1181 * |
|
1182 * Returns 0 on success or -1 on failure to extend the buffer. On failure |
|
1183 * the original buffer still exists at the original size. |
|
1184 */ |
|
1185 static int |
|
1186 xmlZMemBuffExtend( xmlZMemBuffPtr buff, size_t ext_amt ) |
|
1187 { |
|
1188 int rc = -1; |
|
1189 size_t new_size; |
|
1190 size_t cur_used; |
|
1191 |
|
1192 unsigned char * tmp_ptr = NULL; |
|
1193 |
|
1194 if ( buff == NULL ) |
|
1195 return ( -1 ); |
|
1196 |
|
1197 else if ( ext_amt == 0 ) |
|
1198 return ( 0 ); |
|
1199 |
|
1200 cur_used = buff->zctrl.next_out - buff->zbuff; |
|
1201 new_size = buff->size + ext_amt; |
|
1202 |
|
1203 #ifdef DEBUG_HTTP |
|
1204 if ( cur_used > new_size ) |
|
1205 xmlGenericError( xmlGenericErrorContext, |
|
1206 "xmlZMemBuffExtend: %s\n%s %d bytes.\n", |
|
1207 "Buffer overwrite detected during compressed memory", |
|
1208 "buffer extension. Overflowed by", |
|
1209 (cur_used - new_size ) ); |
|
1210 #endif |
|
1211 |
|
1212 tmp_ptr = xmlRealloc( buff->zbuff, new_size ); |
|
1213 if ( tmp_ptr != NULL ) { |
|
1214 rc = 0; |
|
1215 buff->size = new_size; |
|
1216 buff->zbuff = tmp_ptr; |
|
1217 buff->zctrl.next_out = tmp_ptr + cur_used; |
|
1218 buff->zctrl.avail_out = new_size - cur_used; |
|
1219 } |
|
1220 else { |
|
1221 xmlChar msg[500]; |
|
1222 xmlStrPrintf(msg, 500, |
|
1223 (const xmlChar *) EMBED_ERRTXT("xmlZMemBuffExtend: %s %lu bytes.\n"), |
|
1224 EMBED_ERRTXT("Allocation failure extending output buffer to"), |
|
1225 new_size ); |
|
1226 xmlIOErr(XML_IO_WRITE, (const char *) msg); |
|
1227 } |
|
1228 |
|
1229 return ( rc ); |
|
1230 } |
|
1231 |
|
1232 /** |
|
1233 * xmlZMemBuffAppend |
|
1234 * @param buff Buffer used to compress and consolidate data |
|
1235 * @param src Uncompressed source content to append to buffer |
|
1236 * @param len Length of source data to append to buffer |
|
1237 * |
|
1238 * Compress and append data to the internal buffer. The data buffer |
|
1239 * will be expanded if needed to store the additional data. |
|
1240 * |
|
1241 * Returns the number of bytes appended to the buffer or -1 on error. |
|
1242 */ |
|
1243 static int |
|
1244 xmlZMemBuffAppend( xmlZMemBuffPtr buff, const char * src, int len ) |
|
1245 { |
|
1246 int z_err; |
|
1247 size_t min_accept; |
|
1248 |
|
1249 if ( ( buff == NULL ) || ( src == NULL ) ) |
|
1250 return ( -1 ); |
|
1251 |
|
1252 buff->zctrl.avail_in = len; |
|
1253 buff->zctrl.next_in = (unsigned char *)src; |
|
1254 while ( buff->zctrl.avail_in > 0 ) { |
|
1255 /* |
|
1256 ** Extend the buffer prior to deflate call if a reasonable amount |
|
1257 ** of output buffer space is not available. |
|
1258 */ |
|
1259 min_accept = buff->zctrl.avail_in / DFLT_ZLIB_RATIO; |
|
1260 if ( buff->zctrl.avail_out <= min_accept ) { |
|
1261 if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
|
1262 return ( -1 ); |
|
1263 } |
|
1264 |
|
1265 z_err = deflate( &buff->zctrl, Z_NO_FLUSH ); |
|
1266 if ( z_err != Z_OK ) { |
|
1267 xmlChar msg[500]; |
|
1268 xmlStrPrintf(msg, 500, |
|
1269 (const xmlChar *) EMBED_ERRTXT("xmlZMemBuffAppend: %s %d %s - %d"), |
|
1270 EMBED_ERRTXT("Compression error while appending"), |
|
1271 len, EMBED_ERRTXT("bytes to buffer. ZLIB error"), z_err ); |
|
1272 xmlIOErr(XML_IO_WRITE, (const char *) msg); |
|
1273 return ( -1 ); |
|
1274 } |
|
1275 } |
|
1276 |
|
1277 buff->crc = crc32( buff->crc, (unsigned char *)src, len ); |
|
1278 |
|
1279 return ( len ); |
|
1280 } |
|
1281 |
|
1282 /** |
|
1283 * xmlZMemBuffGetContent |
|
1284 * @param buff Compressed memory content buffer |
|
1285 * @param data_ref Pointer reference to point to compressed content |
|
1286 * |
|
1287 * Flushes the compression buffers, appends gzip file trailers and |
|
1288 * returns the compressed content and length of the compressed data. |
|
1289 * NOTE: The gzip trailer code here is plagiarized from zlib source. |
|
1290 * |
|
1291 * Returns the length of the compressed data or -1 on error. |
|
1292 */ |
|
1293 static int |
|
1294 xmlZMemBuffGetContent( xmlZMemBuffPtr buff, char ** data_ref ) |
|
1295 { |
|
1296 int zlgth = -1; |
|
1297 int z_err; |
|
1298 |
|
1299 if ( ( buff == NULL ) || ( data_ref == NULL ) ) |
|
1300 return ( -1 ); |
|
1301 |
|
1302 /* Need to loop until compression output buffers are flushed */ |
|
1303 |
|
1304 do |
|
1305 { |
|
1306 z_err = deflate( &buff->zctrl, Z_FINISH ); |
|
1307 if ( z_err == Z_OK ) { |
|
1308 /* In this case Z_OK means more buffer space needed */ |
|
1309 |
|
1310 if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
|
1311 return ( -1 ); |
|
1312 } |
|
1313 } |
|
1314 while ( z_err == Z_OK ); |
|
1315 |
|
1316 /* If the compression state is not Z_STREAM_END, some error occurred */ |
|
1317 |
|
1318 if ( z_err == Z_STREAM_END ) { |
|
1319 |
|
1320 /* Need to append the gzip data trailer */ |
|
1321 |
|
1322 if ( buff->zctrl.avail_out < ( 2 * sizeof( unsigned long ) ) ) { |
|
1323 if ( xmlZMemBuffExtend(buff, (2 * sizeof(unsigned long))) == -1 ) |
|
1324 return ( -1 ); |
|
1325 } |
|
1326 |
|
1327 /* |
|
1328 ** For whatever reason, the CRC and length data are pushed out |
|
1329 ** in reverse byte order. So a memcpy can't be used here. |
|
1330 */ |
|
1331 |
|
1332 append_reverse_ulong( buff, buff->crc ); |
|
1333 append_reverse_ulong( buff, buff->zctrl.total_in ); |
|
1334 |
|
1335 zlgth = buff->zctrl.next_out - buff->zbuff; |
|
1336 *data_ref = (char *)buff->zbuff; |
|
1337 } |
|
1338 |
|
1339 else { |
|
1340 xmlChar msg[500]; |
|
1341 xmlStrPrintf(msg, 500, |
|
1342 (const xmlChar *) EMBED_ERRTXT("xmlZMemBuffGetContent: %s - %d\n"), |
|
1343 EMBED_ERRTXT("Error flushing zlib buffers. Error code"), z_err ); |
|
1344 xmlIOErr(XML_IO_WRITE, (const char *) msg); |
|
1345 } |
|
1346 |
|
1347 return ( zlgth ); |
|
1348 } |
|
1349 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1350 #endif /* HAVE_ZLIB_H */ |
|
1351 |
|
1352 #ifdef LIBXML_OUTPUT_ENABLED |
|
1353 /** |
|
1354 * xmlFreeHTTPWriteCtxt |
|
1355 * @param ctxt Context to cleanup |
|
1356 * |
|
1357 * Free allocated memory and reclaim system resources. |
|
1358 * |
|
1359 * No return value. |
|
1360 */ |
|
1361 static void |
|
1362 xmlFreeHTTPWriteCtxt( xmlIOHTTPWriteCtxtPtr ctxt ) |
|
1363 { |
|
1364 if ( ctxt->uri != NULL ) |
|
1365 xmlFree( ctxt->uri ); |
|
1366 |
|
1367 if ( ctxt->doc_buff != NULL ) { |
|
1368 |
|
1369 #ifdef HAVE_ZLIB_H |
|
1370 if ( ctxt->compression > 0 ) { |
|
1371 xmlFreeZMemBuff( ctxt->doc_buff ); |
|
1372 } |
|
1373 else |
|
1374 #endif |
|
1375 { |
|
1376 xmlOutputBufferClose( ctxt->doc_buff ); |
|
1377 } |
|
1378 } |
|
1379 |
|
1380 xmlFree( ctxt ); |
|
1381 return; |
|
1382 } |
|
1383 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1384 |
|
1385 |
|
1386 /** |
|
1387 * xmlIOHTTPMatch: |
|
1388 * @param filename the URI for matching |
|
1389 * |
|
1390 * check if the URI matches an HTTP one |
|
1391 * |
|
1392 * Returns 1 if matches, 0 otherwise |
|
1393 */ |
|
1394 int |
|
1395 xmlIOHTTPMatch (const char *filename) { |
|
1396 if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "http://", 7)) |
|
1397 return(1); |
|
1398 return(0); |
|
1399 } |
|
1400 |
|
1401 /** |
|
1402 * xmlIOHTTPOpen: |
|
1403 * @param filename the URI for matching |
|
1404 * |
|
1405 * open an HTTP I/O channel |
|
1406 * |
|
1407 * Returns an I/O context or NULL in case of error |
|
1408 */ |
|
1409 void * |
|
1410 xmlIOHTTPOpen (const char *filename) { |
|
1411 return(xmlNanoHTTPOpen(filename, NULL)); |
|
1412 } |
|
1413 |
|
1414 #ifdef LIBXML_OUTPUT_ENABLED |
|
1415 /** |
|
1416 * xmlIOHTTPOpenW: |
|
1417 * @param post_uri The destination URI for the document |
|
1418 * @param compression The compression desired for the document. |
|
1419 * |
|
1420 * Open a temporary buffer to collect the document for a subsequent HTTP POST |
|
1421 * request. Non-static as is called from the output buffer creation routine. |
|
1422 * |
|
1423 * Returns an I/O context or NULL in case of error. |
|
1424 */ |
|
1425 |
|
1426 void * |
|
1427 xmlIOHTTPOpenW(const char *post_uri, int compression) |
|
1428 { |
|
1429 |
|
1430 xmlIOHTTPWriteCtxtPtr ctxt = NULL; |
|
1431 |
|
1432 if (post_uri == NULL) |
|
1433 return (NULL); |
|
1434 |
|
1435 ctxt = xmlMalloc(sizeof(xmlIOHTTPWriteCtxt)); |
|
1436 if (ctxt == NULL) { |
|
1437 xmlIOErrMemory(EMBED_ERRTXT("creating HTTP output context")); |
|
1438 return (NULL); |
|
1439 } |
|
1440 |
|
1441 (void) memset(ctxt, 0, sizeof(xmlIOHTTPWriteCtxt)); |
|
1442 |
|
1443 ctxt->uri = (char *) xmlStrdup((const xmlChar *)post_uri); |
|
1444 if (ctxt->uri == NULL) { |
|
1445 xmlIOErrMemory(EMBED_ERRTXT("copying URI")); |
|
1446 xmlFreeHTTPWriteCtxt(ctxt); |
|
1447 return (NULL); |
|
1448 } |
|
1449 |
|
1450 /* |
|
1451 * ** Since the document length is required for an HTTP post, |
|
1452 * ** need to put the document into a buffer. A memory buffer |
|
1453 * ** is being used to avoid pushing the data to disk and back. |
|
1454 */ |
|
1455 |
|
1456 #ifdef HAVE_ZLIB_H |
|
1457 if ((compression > 0) && (compression <= 9)) { |
|
1458 |
|
1459 ctxt->compression = compression; |
|
1460 ctxt->doc_buff = xmlCreateZMemBuff(compression); |
|
1461 } else |
|
1462 #endif |
|
1463 { |
|
1464 /* Any character conversions should have been done before this */ |
|
1465 |
|
1466 ctxt->doc_buff = xmlAllocOutputBuffer(NULL); |
|
1467 } |
|
1468 |
|
1469 if (ctxt->doc_buff == NULL) { |
|
1470 xmlFreeHTTPWriteCtxt(ctxt); |
|
1471 ctxt = NULL; |
|
1472 } |
|
1473 |
|
1474 return (ctxt); |
|
1475 } |
|
1476 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1477 |
|
1478 #ifdef LIBXML_OUTPUT_ENABLED |
|
1479 /** |
|
1480 * xmlIOHTTPDfltOpenW |
|
1481 * @param post_uri The destination URI for this document. |
|
1482 * |
|
1483 * Calls xmlIOHTTPOpenW with no compression to set up for a subsequent |
|
1484 * HTTP post command. This function should generally not be used as |
|
1485 * the open callback is short circuited in xmlOutputBufferCreateFile. |
|
1486 * |
|
1487 * Returns a pointer to the new IO context. |
|
1488 */ |
|
1489 static void * |
|
1490 xmlIOHTTPDfltOpenW( const char * post_uri ) |
|
1491 { |
|
1492 return ( xmlIOHTTPOpenW( post_uri, 0 ) ); |
|
1493 } |
|
1494 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1495 |
|
1496 /** |
|
1497 * xmlIOHTTPRead: |
|
1498 * @param context the I/O context |
|
1499 * @param buffer where to drop data |
|
1500 * @param len number of bytes to write |
|
1501 * |
|
1502 * Read len bytes to buffer from the I/O channel. |
|
1503 * |
|
1504 * Returns the number of bytes written |
|
1505 */ |
|
1506 int |
|
1507 xmlIOHTTPRead(void * context, char * buffer, int len) |
|
1508 { |
|
1509 return(xmlNanoHTTPRead(context, &buffer[0], len)); |
|
1510 } |
|
1511 |
|
1512 #ifdef LIBXML_OUTPUT_ENABLED |
|
1513 /** |
|
1514 * xmlIOHTTPWrite |
|
1515 * @param context previously opened writing context |
|
1516 * @param buffer data to output to temporary buffer |
|
1517 * @param len bytes to output |
|
1518 * |
|
1519 * Collect data from memory buffer into a temporary file for later |
|
1520 * processing. |
|
1521 * |
|
1522 * Returns number of bytes written. |
|
1523 */ |
|
1524 |
|
1525 static int |
|
1526 xmlIOHTTPWrite( void * context, const char * buffer, int len ) |
|
1527 { |
|
1528 xmlIOHTTPWriteCtxtPtr ctxt = context; |
|
1529 |
|
1530 if ( ( ctxt == NULL ) || ( ctxt->doc_buff == NULL ) || ( buffer == NULL ) ) |
|
1531 return ( -1 ); |
|
1532 |
|
1533 if ( len > 0 ) { |
|
1534 |
|
1535 /* Use gzwrite or fwrite as previously setup in the open call */ |
|
1536 |
|
1537 #ifdef HAVE_ZLIB_H |
|
1538 if ( ctxt->compression > 0 ) |
|
1539 len = xmlZMemBuffAppend( ctxt->doc_buff, buffer, len ); |
|
1540 |
|
1541 else |
|
1542 #endif |
|
1543 len = xmlOutputBufferWrite( ctxt->doc_buff, len, buffer ); |
|
1544 |
|
1545 if ( len < 0 ) { |
|
1546 xmlChar msg[500]; |
|
1547 xmlStrPrintf(msg, 500, |
|
1548 (const xmlChar *) EMBED_ERRTXT("xmlIOHTTPWrite: %s\n%s '%s'.\n"), |
|
1549 EMBED_ERRTXT("Error appending to internal buffer."), |
|
1550 EMBED_ERRTXT("Error sending document to URI"), |
|
1551 ctxt->uri ); |
|
1552 xmlIOErr(XML_IO_WRITE, (const char *) msg); |
|
1553 } |
|
1554 } |
|
1555 |
|
1556 return ( len ); |
|
1557 } |
|
1558 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1559 |
|
1560 |
|
1561 /** |
|
1562 * xmlIOHTTPClose: |
|
1563 * @param context the I/O context |
|
1564 * |
|
1565 * Close an HTTP I/O channel |
|
1566 * |
|
1567 * Returns 0 |
|
1568 */ |
|
1569 int |
|
1570 xmlIOHTTPClose (void * context) |
|
1571 { |
|
1572 xmlNanoHTTPClose(context); |
|
1573 return 0; |
|
1574 } |
|
1575 |
|
1576 |
|
1577 #ifdef LIBXML_OUTPUT_ENABLED |
|
1578 /** |
|
1579 * xmlIOHTTCloseWrite |
|
1580 * @param context The I/O context |
|
1581 * @param http_mthd The HTTP method to be used when sending the data |
|
1582 * |
|
1583 * Close the transmit HTTP I/O channel and actually send the data. |
|
1584 */ |
|
1585 static int |
|
1586 xmlIOHTTPCloseWrite( void * context, const char * http_mthd ) |
|
1587 { |
|
1588 int close_rc = -1; |
|
1589 int http_rtn = 0; |
|
1590 int content_lgth = 0; |
|
1591 xmlIOHTTPWriteCtxtPtr ctxt = context; |
|
1592 |
|
1593 char * http_content = NULL; |
|
1594 char * content_encoding = NULL; |
|
1595 char * content_type = (char *) "text/xml"; |
|
1596 void * http_ctxt = NULL; |
|
1597 |
|
1598 if ( ( ctxt == NULL ) || ( http_mthd == NULL ) ) |
|
1599 return ( -1 ); |
|
1600 |
|
1601 /* Retrieve the content from the appropriate buffer */ |
|
1602 |
|
1603 #ifdef HAVE_ZLIB_H |
|
1604 |
|
1605 if ( ctxt->compression > 0 ) { |
|
1606 content_lgth = xmlZMemBuffGetContent( ctxt->doc_buff, &http_content ); |
|
1607 content_encoding = (char *) "Content-Encoding: gzip"; |
|
1608 } |
|
1609 else |
|
1610 #endif |
|
1611 { |
|
1612 /* Pull the data out of the memory output buffer */ |
|
1613 |
|
1614 xmlOutputBufferPtr dctxt = ctxt->doc_buff; |
|
1615 http_content = (char *)dctxt->buffer->content; |
|
1616 content_lgth = dctxt->buffer->use; |
|
1617 } |
|
1618 |
|
1619 if ( http_content == NULL ) { |
|
1620 xmlChar msg[500]; |
|
1621 xmlStrPrintf(msg, 500, |
|
1622 (const xmlChar *) EMBED_ERRTXT("xmlIOHTTPCloseWrite: %s '%s' %s '%s'.\n"), |
|
1623 EMBED_ERRTXT("Error retrieving content.\nUnable to"), |
|
1624 http_mthd, EMBED_ERRTXT("data to URI"), ctxt->uri ); |
|
1625 xmlIOErr(XML_IO_WRITE, (const char *) msg); |
|
1626 } |
|
1627 |
|
1628 else { |
|
1629 |
|
1630 http_ctxt = xmlNanoHTTPMethod( ctxt->uri, http_mthd, http_content, |
|
1631 &content_type, content_encoding, |
|
1632 content_lgth ); |
|
1633 |
|
1634 if ( http_ctxt != NULL ) { |
|
1635 #ifdef DEBUG_HTTP |
|
1636 /* If testing/debugging - dump reply with request content */ |
|
1637 |
|
1638 FILE * tst_file = NULL; |
|
1639 char buffer[ 4096 ]; |
|
1640 char * dump_name = NULL; |
|
1641 int avail; |
|
1642 |
|
1643 xmlGenericError( xmlGenericErrorContext, |
|
1644 "xmlNanoHTTPCloseWrite: HTTP %s to\n%s returned %d.\n", |
|
1645 http_mthd, ctxt->uri, |
|
1646 xmlNanoHTTPReturnCode( http_ctxt ) ); |
|
1647 |
|
1648 /* |
|
1649 ** Since either content or reply may be gzipped, |
|
1650 ** dump them to separate files instead of the |
|
1651 ** standard error context. |
|
1652 */ |
|
1653 |
|
1654 dump_name = tempnam( NULL, "lxml" ); |
|
1655 if ( dump_name != NULL ) { |
|
1656 (void)snprintf( buffer, sizeof(buffer), "%s.content", dump_name ); |
|
1657 |
|
1658 tst_file = fopen( buffer, "wb" ); |
|
1659 CHECK_ERRNO; |
|
1660 |
|
1661 if ( tst_file != NULL ) { |
|
1662 xmlGenericError( xmlGenericErrorContext, |
|
1663 "Transmitted content saved in file: %s\n", buffer ); |
|
1664 |
|
1665 fwrite( http_content, sizeof( char ), |
|
1666 content_lgth, tst_file ); |
|
1667 CHECK_ERRNO; |
|
1668 fclose( tst_file ); |
|
1669 } |
|
1670 |
|
1671 (void)snprintf( buffer, sizeof(buffer), "%s.reply", dump_name ); |
|
1672 tst_file = fopen( buffer, "wb" ); |
|
1673 CHECK_ERRNO; |
|
1674 |
|
1675 if ( tst_file != NULL ) { |
|
1676 xmlGenericError( xmlGenericErrorContext, |
|
1677 "Reply content saved in file: %s\n", buffer ); |
|
1678 |
|
1679 |
|
1680 while ( (avail = xmlNanoHTTPRead( http_ctxt, |
|
1681 buffer, sizeof( buffer ) )) > 0 ) { |
|
1682 |
|
1683 fwrite( buffer, sizeof( char ), avail, tst_file ); |
|
1684 } |
|
1685 |
|
1686 fclose( tst_file ); |
|
1687 } |
|
1688 |
|
1689 free( dump_name ); |
|
1690 } |
|
1691 #endif /* DEBUG_HTTP */ |
|
1692 |
|
1693 http_rtn = xmlNanoHTTPReturnCode( http_ctxt ); |
|
1694 if ( ( http_rtn >= 200 ) && ( http_rtn < 300 ) ) |
|
1695 close_rc = 0; |
|
1696 else { |
|
1697 xmlChar msg[500]; |
|
1698 xmlStrPrintf(msg, 500, |
|
1699 (const xmlChar *) EMBED_ERRTXT("xmlIOHTTPCloseWrite: HTTP '%s' of %d %s\n'%s' %s %d\n"), |
|
1700 http_mthd, content_lgth, |
|
1701 EMBED_ERRTXT("bytes to URI"), ctxt->uri, |
|
1702 EMBED_ERRTXT("failed. HTTP return code:"), http_rtn ); |
|
1703 xmlIOErr(XML_IO_WRITE, (const char *) msg); |
|
1704 } |
|
1705 |
|
1706 xmlNanoHTTPClose( http_ctxt ); |
|
1707 xmlFree( content_type ); |
|
1708 } |
|
1709 } |
|
1710 |
|
1711 /* Final cleanups */ |
|
1712 |
|
1713 xmlFreeHTTPWriteCtxt( ctxt ); |
|
1714 |
|
1715 return ( close_rc ); |
|
1716 } |
|
1717 |
|
1718 /** |
|
1719 * xmlIOHTTPClosePut |
|
1720 * |
|
1721 * @param context The I/O context |
|
1722 * |
|
1723 * Close the transmit HTTP I/O channel and actually send data using a PUT |
|
1724 * HTTP method. |
|
1725 */ |
|
1726 static int |
|
1727 xmlIOHTTPClosePut( void * ctxt ) |
|
1728 { |
|
1729 return ( xmlIOHTTPCloseWrite( ctxt, "PUT" ) ); |
|
1730 } |
|
1731 |
|
1732 |
|
1733 /** |
|
1734 * xmlIOHTTPClosePost |
|
1735 * |
|
1736 * @param context The I/O context |
|
1737 * |
|
1738 * Close the transmit HTTP I/O channel and actually send data using a POST |
|
1739 * HTTP method. |
|
1740 */ |
|
1741 static int |
|
1742 xmlIOHTTPClosePost( void * ctxt ) |
|
1743 { |
|
1744 return ( xmlIOHTTPCloseWrite( ctxt, "POST" ) ); |
|
1745 } |
|
1746 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1747 |
|
1748 #endif /* LIBXML_HTTP_ENABLED */ |
|
1749 |
|
1750 #ifdef LIBXML_FTP_ENABLED |
|
1751 /************************************************************************ |
|
1752 * * |
|
1753 * I/O for FTP file accesses * |
|
1754 * * |
|
1755 ************************************************************************/ |
|
1756 /** |
|
1757 * xmlIOFTPMatch: |
|
1758 * @param filename the URI for matching |
|
1759 * |
|
1760 * check if the URI matches an FTP one |
|
1761 * |
|
1762 * Returns 1 if matches, 0 otherwise |
|
1763 */ |
|
1764 int |
|
1765 xmlIOFTPMatch (const char *filename) |
|
1766 { |
|
1767 if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "ftp://", 6)) |
|
1768 return(1); |
|
1769 return(0); |
|
1770 } |
|
1771 |
|
1772 /** |
|
1773 * xmlIOFTPOpen: |
|
1774 * @param filename the URI for matching |
|
1775 * |
|
1776 * open an FTP I/O channel |
|
1777 * |
|
1778 * Returns an I/O context or NULL in case of error |
|
1779 */ |
|
1780 void * |
|
1781 xmlIOFTPOpen (const char *filename) |
|
1782 { |
|
1783 return(xmlNanoFTPOpen(filename)); |
|
1784 } |
|
1785 |
|
1786 /** |
|
1787 * xmlIOFTPRead: |
|
1788 * @param context the I/O context |
|
1789 * @param buffer where to drop data |
|
1790 * @param len number of bytes to write |
|
1791 * |
|
1792 * Read len bytes to buffer from the I/O channel. |
|
1793 * |
|
1794 * Returns the number of bytes written |
|
1795 */ |
|
1796 int |
|
1797 xmlIOFTPRead(void * context, char * buffer, int len) |
|
1798 { |
|
1799 return(xmlNanoFTPRead(context, &buffer[0], len)); |
|
1800 } |
|
1801 |
|
1802 /** |
|
1803 * xmlIOFTPClose: |
|
1804 * @param context the I/O context |
|
1805 * |
|
1806 * Close an FTP I/O channel |
|
1807 * |
|
1808 * Returns 0 |
|
1809 */ |
|
1810 int |
|
1811 xmlIOFTPClose (void * context) |
|
1812 { |
|
1813 return ( xmlNanoFTPClose(context) ); |
|
1814 } |
|
1815 #endif /* LIBXML_FTP_ENABLED */ |
|
1816 |
|
1817 |
|
1818 /** |
|
1819 * xmlRegisterInputCallbacks: |
|
1820 * @param matchFunc the xmlInputMatchCallback |
|
1821 * @param openFunc the xmlInputOpenCallback |
|
1822 * @param readFunc the xmlInputReadCallback |
|
1823 * @param closeFunc the xmlInputCloseCallback |
|
1824 * |
|
1825 * Register a new set of I/O callback for handling parser input. |
|
1826 * |
|
1827 * Returns the registered handler number or -1 in case of error |
|
1828 * |
|
1829 * OOM: never |
|
1830 */ |
|
1831 XMLPUBFUNEXPORT int |
|
1832 xmlRegisterInputCallbacks(xmlInputMatchCallback matchFunc, |
|
1833 xmlInputOpenCallback openFunc, xmlInputReadCallback readFunc, |
|
1834 xmlInputCloseCallback closeFunc) |
|
1835 { |
|
1836 LOAD_GS_DIRECT |
|
1837 if (xmlInputCallbackNr >= MAX_INPUT_CALLBACK) { |
|
1838 return(-1); |
|
1839 } |
|
1840 xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = matchFunc; |
|
1841 xmlInputCallbackTable[xmlInputCallbackNr].opencallback = openFunc; |
|
1842 xmlInputCallbackTable[xmlInputCallbackNr].readcallback = readFunc; |
|
1843 xmlInputCallbackTable[xmlInputCallbackNr].closecallback = closeFunc; |
|
1844 xmlInputCallbackInitialized = 1; |
|
1845 return(xmlInputCallbackNr++); |
|
1846 } |
|
1847 |
|
1848 #ifdef LIBXML_OUTPUT_ENABLED |
|
1849 /** |
|
1850 * xmlRegisterOutputCallbacks: |
|
1851 * @param matchFunc the xmlOutputMatchCallback |
|
1852 * @param openFunc the xmlOutputOpenCallback |
|
1853 * @param writeFunc the xmlOutputWriteCallback |
|
1854 * @param closeFunc the xmlOutputCloseCallback |
|
1855 * |
|
1856 * Register a new set of I/O callback for handling output. |
|
1857 * |
|
1858 * Returns the registered handler number or -1 in case of error |
|
1859 * |
|
1860 * OOM: never |
|
1861 */ |
|
1862 XMLPUBFUNEXPORT int |
|
1863 xmlRegisterOutputCallbacks(xmlOutputMatchCallback matchFunc, |
|
1864 xmlOutputOpenCallback openFunc, xmlOutputWriteCallback writeFunc, |
|
1865 xmlOutputCloseCallback closeFunc) |
|
1866 { |
|
1867 LOAD_GS_DIRECT |
|
1868 if (xmlOutputCallbackNr >= MAX_INPUT_CALLBACK) { |
|
1869 return(-1); |
|
1870 } |
|
1871 |
|
1872 xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = matchFunc; |
|
1873 xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = openFunc; |
|
1874 xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = writeFunc; |
|
1875 xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = closeFunc; |
|
1876 xmlOutputCallbackInitialized = 1; |
|
1877 return(xmlOutputCallbackNr++); |
|
1878 } |
|
1879 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1880 |
|
1881 /** |
|
1882 * xmlRegisterDefaultInputCallbacks: |
|
1883 * |
|
1884 * Registers the default compiled-in I/O handlers. |
|
1885 * |
|
1886 * OOM: never |
|
1887 */ |
|
1888 XMLPUBFUNEXPORT void |
|
1889 xmlRegisterDefaultInputCallbacks(void) |
|
1890 { |
|
1891 LOAD_GS_DIRECT |
|
1892 if (xmlInputCallbackInitialized){ |
|
1893 |
|
1894 return; |
|
1895 } |
|
1896 |
|
1897 xmlRegisterInputCallbacks(xmlFileMatch, xmlFileOpen, |
|
1898 xmlFileRead, xmlFileClose); |
|
1899 #ifdef HAVE_ZLIB_H |
|
1900 xmlRegisterInputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
|
1901 xmlGzfileRead, xmlGzfileClose); |
|
1902 #endif /* HAVE_ZLIB_H */ |
|
1903 |
|
1904 xmlInputCallbackInitialized = 1; |
|
1905 } |
|
1906 |
|
1907 #ifdef LIBXML_OUTPUT_ENABLED |
|
1908 /** |
|
1909 * xmlRegisterDefaultOutputCallbacks: |
|
1910 * |
|
1911 * Registers the default compiled-in I/O handlers. |
|
1912 * |
|
1913 * OOM: never (at least as far as initial size of table is enough) |
|
1914 */ |
|
1915 XMLPUBFUNEXPORT void |
|
1916 xmlRegisterDefaultOutputCallbacks(void) |
|
1917 { |
|
1918 LOAD_GS_DIRECT |
|
1919 if (xmlOutputCallbackInitialized) |
|
1920 return; |
|
1921 |
|
1922 xmlRegisterOutputCallbacks(xmlFileMatch, xmlFileOpenW, |
|
1923 xmlFileWrite, xmlFileClose); |
|
1924 |
|
1925 #ifdef LIBXML_HTTP_ENABLED |
|
1926 xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
|
1927 xmlIOHTTPWrite, xmlIOHTTPClosePut); |
|
1928 #endif |
|
1929 |
|
1930 /********************************* |
|
1931 No way a-priori to distinguish between gzipped files from |
|
1932 uncompressed ones except opening if existing then closing |
|
1933 and saving with same compression ratio ... a pain. |
|
1934 |
|
1935 #ifdef HAVE_ZLIB_H |
|
1936 xmlRegisterOutputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
|
1937 xmlGzfileWrite, xmlGzfileClose); |
|
1938 #endif |
|
1939 |
|
1940 Nor FTP PUT .... |
|
1941 #ifdef LIBXML_FTP_ENABLED |
|
1942 xmlRegisterOutputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
|
1943 xmlIOFTPWrite, xmlIOFTPClose); |
|
1944 #endif |
|
1945 **********************************/ |
|
1946 xmlOutputCallbackInitialized = 1; |
|
1947 } |
|
1948 |
|
1949 #ifdef LIBXML_HTTP_ENABLED |
|
1950 /** |
|
1951 * xmlRegisterHTTPPostCallbacks: |
|
1952 * |
|
1953 * By default, libxml submits HTTP output requests using the "PUT" method. |
|
1954 * Calling this method changes the HTTP output method to use the "POST" |
|
1955 * method instead. |
|
1956 * |
|
1957 */ |
|
1958 void |
|
1959 xmlRegisterHTTPPostCallbacks( void ) |
|
1960 { |
|
1961 /* Register defaults if not done previously */ |
|
1962 |
|
1963 if ( xmlOutputCallbackInitialized == 0 ) |
|
1964 xmlRegisterDefaultOutputCallbacks( ); |
|
1965 |
|
1966 xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
|
1967 xmlIOHTTPWrite, xmlIOHTTPClosePost); |
|
1968 return; |
|
1969 } |
|
1970 #endif |
|
1971 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
1972 |
|
1973 /** |
|
1974 * xmlAllocParserInputBuffer: |
|
1975 * @param enc the charset encoding if known |
|
1976 * |
|
1977 * Create a buffered parser input for progressive parsing |
|
1978 * |
|
1979 * Returns the new parser input or NULL |
|
1980 * |
|
1981 * OOM: possible --> NULL returned and OOM flag is set |
|
1982 */ |
|
1983 XMLPUBFUNEXPORT xmlParserInputBufferPtr |
|
1984 xmlAllocParserInputBuffer(xmlCharEncoding enc) |
|
1985 { |
|
1986 LOAD_GS_DIRECT |
|
1987 xmlParserInputBufferPtr ret; |
|
1988 |
|
1989 ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
|
1990 if (!ret) { |
|
1991 xmlIOErrMemory(EMBED_ERRTXT("creating input buffer")); |
|
1992 return(NULL); |
|
1993 } |
|
1994 memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); |
|
1995 ret->buffer = xmlBufferCreateSize(2 * xmlDefaultBufferSize); |
|
1996 if (!ret->buffer) |
|
1997 goto OOM; |
|
1998 |
|
1999 |
|
2000 ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
|
2001 ret->encoder = xmlGetCharEncodingHandler(enc); |
|
2002 |
|
2003 if(OOM_FLAG) |
|
2004 goto OOM; |
|
2005 |
|
2006 if (ret->encoder){ |
|
2007 ret->raw = xmlBufferCreateSize(2 * xmlDefaultBufferSize); // sets OOM flag |
|
2008 if(!ret->raw) |
|
2009 goto OOM; |
|
2010 }else{ |
|
2011 ret->raw = NULL; |
|
2012 } |
|
2013 ret->readcallback = NULL; |
|
2014 ret->closecallback = NULL; |
|
2015 ret->context = NULL; |
|
2016 ret->compressed = -1; |
|
2017 ret->rawconsumed = 0; |
|
2018 |
|
2019 return(ret); |
|
2020 //------------------- |
|
2021 OOM: |
|
2022 xmlFreeParserInputBuffer(ret); |
|
2023 return NULL; |
|
2024 } |
|
2025 |
|
2026 #ifdef LIBXML_OUTPUT_ENABLED |
|
2027 /** |
|
2028 * xmlAllocOutputBuffer: |
|
2029 * @param encoder the encoding converter or NULL |
|
2030 * |
|
2031 * Create a buffered parser output |
|
2032 * |
|
2033 * Returns the new parser output or NULL |
|
2034 * |
|
2035 * OOM: possible --> NULL is returned && OOM flag is set |
|
2036 * |
|
2037 */ |
|
2038 XMLPUBFUNEXPORT xmlOutputBufferPtr |
|
2039 xmlAllocOutputBuffer(xmlCharEncodingHandlerPtr encoder) |
|
2040 { |
|
2041 xmlOutputBufferPtr ret; |
|
2042 |
|
2043 ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
|
2044 if (ret == NULL) { |
|
2045 xmlIOErrMemory(EMBED_ERRTXT("creating output buffer")); |
|
2046 return(NULL); |
|
2047 } |
|
2048 memset(ret, 0, (size_t) sizeof(xmlOutputBuffer)); |
|
2049 ret->buffer = xmlBufferCreate(); |
|
2050 if (ret->buffer == NULL) { |
|
2051 xmlFree(ret); |
|
2052 return(NULL); |
|
2053 } |
|
2054 ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
|
2055 ret->encoder = encoder; |
|
2056 if (encoder != NULL) { |
|
2057 ret->conv = xmlBufferCreateSize(4000); |
|
2058 /* |
|
2059 * This call is designed to initiate the encoder state |
|
2060 */ |
|
2061 xmlCharEncOutFunc(encoder, ret->conv, NULL); // may set OOM flag |
|
2062 } //else { |
|
2063 //ret->conv = NULL; // unneeded -- it's NULL after memset() above |
|
2064 //} |
|
2065 ret->writecallback = NULL; |
|
2066 ret->closecallback = NULL; |
|
2067 ret->context = NULL; |
|
2068 ret->written = 0; |
|
2069 |
|
2070 return(ret); |
|
2071 } |
|
2072 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
2073 |
|
2074 /** |
|
2075 * xmlFreeParserInputBuffer: |
|
2076 * @param in a buffered parser input |
|
2077 * |
|
2078 * Free up the memory used by a buffered parser input |
|
2079 * |
|
2080 * OOM: never |
|
2081 */ |
|
2082 XMLPUBFUNEXPORT void |
|
2083 xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) |
|
2084 { |
|
2085 if (in == NULL) return; |
|
2086 |
|
2087 if (in->raw) { |
|
2088 xmlBufferFree(in->raw); |
|
2089 in->raw = NULL; |
|
2090 } |
|
2091 if (in->encoder) { |
|
2092 xmlCharEncCloseFunc(in->encoder); |
|
2093 } |
|
2094 if (in->closecallback) { |
|
2095 in->closecallback(in->context); |
|
2096 } |
|
2097 if (in->buffer) { |
|
2098 xmlBufferFree(in->buffer); |
|
2099 in->buffer = NULL; |
|
2100 } |
|
2101 |
|
2102 xmlFree(in); |
|
2103 } |
|
2104 |
|
2105 #ifdef LIBXML_OUTPUT_ENABLED |
|
2106 /** |
|
2107 * xmlOutputBufferClose: |
|
2108 * @param out a buffered output |
|
2109 * |
|
2110 * flushes and close the output I/O channel |
|
2111 * and free up all the associated resources |
|
2112 * |
|
2113 * Returns the number of byte written or -1 in case of error. |
|
2114 */ |
|
2115 XMLPUBFUNEXPORT int |
|
2116 xmlOutputBufferClose(xmlOutputBufferPtr out) |
|
2117 { |
|
2118 int written; |
|
2119 int err_rc = 0; |
|
2120 |
|
2121 if (!out) |
|
2122 return (-1); |
|
2123 if (out->writecallback != NULL) |
|
2124 xmlOutputBufferFlush(out); |
|
2125 if (out->closecallback != NULL) { |
|
2126 err_rc = out->closecallback(out->context); |
|
2127 } |
|
2128 written = out->written; |
|
2129 if (out->conv) { |
|
2130 xmlBufferFree(out->conv); |
|
2131 out->conv = NULL; |
|
2132 } |
|
2133 if (out->encoder != NULL) { |
|
2134 xmlCharEncCloseFunc(out->encoder); |
|
2135 } |
|
2136 if (out->buffer != NULL) { |
|
2137 xmlBufferFree(out->buffer); |
|
2138 out->buffer = NULL; |
|
2139 } |
|
2140 |
|
2141 if (out->error) |
|
2142 err_rc = -1; |
|
2143 xmlFree(out); |
|
2144 return ((err_rc == 0) ? written : err_rc); |
|
2145 } |
|
2146 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
2147 |
|
2148 /** |
|
2149 * xmlParserInputBufferCreateFilename: |
|
2150 * @param URI a C string containing the URI or filename |
|
2151 * @param enc the charset encoding if known |
|
2152 * |
|
2153 * Create a buffered parser input for the progressive parsing of a file |
|
2154 * If filename is "-' then we use stdin as the input. |
|
2155 * Automatic support for ZLIB/Compress compressed document is provided |
|
2156 * by default if found at compile-time. |
|
2157 * Do an encoding check if enc == XML_CHAR_ENCODING_NONE |
|
2158 * |
|
2159 * Returns the new parser input or NULL |
|
2160 */ |
|
2161 XMLPUBFUNEXPORT xmlParserInputBufferPtr |
|
2162 xmlParserInputBufferCreateFilename(const char* URI, xmlCharEncoding enc) |
|
2163 { |
|
2164 LOAD_GS_DIRECT |
|
2165 xmlParserInputBufferPtr ret; |
|
2166 int i = 0; |
|
2167 void* context = NULL; |
|
2168 |
|
2169 if (!URI) |
|
2170 return(NULL); |
|
2171 |
|
2172 if (xmlInputCallbackInitialized == 0) |
|
2173 xmlRegisterDefaultInputCallbacks(); |
|
2174 |
|
2175 /* |
|
2176 * Try to find one of the input accept method accepting that scheme |
|
2177 * Go in reverse to give precedence to user defined handlers. |
|
2178 */ |
|
2179 if (!context) { |
|
2180 for (i = xmlInputCallbackNr - 1;i >= 0;i--) |
|
2181 if (xmlInputCallbackTable[i].matchcallback && |
|
2182 xmlInputCallbackTable[i].matchcallback(URI) != 0) |
|
2183 { |
|
2184 context = xmlInputCallbackTable[i].opencallback(URI); |
|
2185 if (context) |
|
2186 break; |
|
2187 } |
|
2188 } |
|
2189 if (!context) { |
|
2190 return(NULL); |
|
2191 } |
|
2192 |
|
2193 /* |
|
2194 * Allocate the Input buffer front-end. |
|
2195 */ |
|
2196 ret = xmlAllocParserInputBuffer(enc); |
|
2197 if (ret) |
|
2198 { |
|
2199 ret->context = context; |
|
2200 ret->readcallback = xmlInputCallbackTable[i].readcallback; |
|
2201 ret->closecallback = xmlInputCallbackTable[i].closecallback; |
|
2202 #ifdef HAVE_ZLIB_H |
|
2203 if (xmlInputCallbackTable[i].opencallback == xmlGzfileOpen && |
|
2204 strcmp(URI, "-") != 0) |
|
2205 { |
|
2206 if (((z_stream *)context)->avail_in > 4) |
|
2207 { |
|
2208 char *cptr, buff4[4]; |
|
2209 |
|
2210 cptr = (char*) ((z_stream*)context)->next_in; |
|
2211 if (gzread(context, buff4, 4) == 4) |
|
2212 { |
|
2213 if (strncmp(buff4, cptr, 4) == 0) |
|
2214 ret->compressed = 0; |
|
2215 else |
|
2216 ret->compressed = 1; |
|
2217 gzrewind(context); |
|
2218 } |
|
2219 } |
|
2220 } |
|
2221 #endif |
|
2222 } |
|
2223 return(ret); |
|
2224 } |
|
2225 |
|
2226 #ifdef LIBXML_OUTPUT_ENABLED |
|
2227 /** |
|
2228 * xmlOutputBufferCreateFilename: |
|
2229 * @param URI a C string containing the URI or filename |
|
2230 * @param encoder the encoding converter or NULL |
|
2231 * @param compression the compression ration (0 none, 9 max). |
|
2232 * |
|
2233 * Create a buffered output for the progressive saving of a file |
|
2234 * If filename is "-' then we use stdout as the output. |
|
2235 * Automatic support for ZLIB/Compress compressed document is provided |
|
2236 * by default if found at compile-time. |
|
2237 * currently if compression is set, the library only support |
|
2238 * writing to a local file. |
|
2239 * |
|
2240 * Returns the new output or NULL |
|
2241 */ |
|
2242 XMLPUBFUNEXPORT xmlOutputBufferPtr |
|
2243 xmlOutputBufferCreateFilename(const char *URI, |
|
2244 xmlCharEncodingHandlerPtr encoder, |
|
2245 int compression ATTRIBUTE_UNUSED) |
|
2246 { |
|
2247 LOAD_GS_DIRECT |
|
2248 xmlOutputBufferPtr ret; |
|
2249 xmlURIPtr puri; |
|
2250 int i = 0; |
|
2251 void* context = NULL; |
|
2252 char* unescaped = NULL; |
|
2253 #ifdef HAVE_ZLIB_H |
|
2254 int is_file_uri = 1; // Used only in ZLIB-enabled parts |
|
2255 #endif |
|
2256 |
|
2257 if (xmlOutputCallbackInitialized == 0) |
|
2258 xmlRegisterDefaultOutputCallbacks(); |
|
2259 if (!URI) |
|
2260 return(NULL); |
|
2261 |
|
2262 puri = xmlParseURI(URI); |
|
2263 if (!puri) |
|
2264 return NULL; |
|
2265 #ifdef HAVE_ZLIB_H |
|
2266 if (puri->scheme && |
|
2267 !xmlStrEqual(BAD_CAST puri->scheme, BAD_CAST "file")) |
|
2268 is_file_uri = 0; |
|
2269 #endif |
|
2270 |
|
2271 /* |
|
2272 * try to limit the damages of the URI unescaping code. |
|
2273 */ |
|
2274 if (puri->scheme) |
|
2275 { |
|
2276 unescaped = xmlURIUnescapeString(URI, 0, NULL); |
|
2277 |
|
2278 } |
|
2279 xmlFreeURI(puri); |
|
2280 |
|
2281 |
|
2282 /* |
|
2283 * Try to find one of the output accept method accepting that scheme |
|
2284 * Go in reverse to give precedence to user defined handlers. |
|
2285 * try with an unescaped version of the URI |
|
2286 */ |
|
2287 if (unescaped) { |
|
2288 #ifdef HAVE_ZLIB_H |
|
2289 if ((compression > 0) && (compression <= 9) && (is_file_uri == 1)) { |
|
2290 context = xmlGzfileOpenW(unescaped, compression); |
|
2291 if (context) { |
|
2292 ret = xmlAllocOutputBuffer(encoder); |
|
2293 if (ret) { |
|
2294 ret->context = context; |
|
2295 ret->writecallback = xmlGzfileWrite; |
|
2296 ret->closecallback = xmlGzfileClose; |
|
2297 } |
|
2298 xmlFree(unescaped); |
|
2299 return(ret); |
|
2300 } |
|
2301 } |
|
2302 #endif |
|
2303 for (i = xmlOutputCallbackNr - 1; i >= 0; i--) { |
|
2304 if (xmlOutputCallbackTable[i].matchcallback && |
|
2305 xmlOutputCallbackTable[i].matchcallback(unescaped) != 0) |
|
2306 { |
|
2307 #if defined(LIBXML_HTTP_ENABLED) && defined(HAVE_ZLIB_H) |
|
2308 /* Need to pass compression parameter into HTTP open calls */ |
|
2309 if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) |
|
2310 context = xmlIOHTTPOpenW(unescaped, compression); |
|
2311 else |
|
2312 #endif |
|
2313 context = xmlOutputCallbackTable[i].opencallback(unescaped); |
|
2314 if (context) |
|
2315 break; |
|
2316 } |
|
2317 } |
|
2318 xmlFree(unescaped); |
|
2319 } // end if(unescaped) |
|
2320 |
|
2321 /* |
|
2322 * If this failed try with a non-escaped URI this may be a strange |
|
2323 * filename |
|
2324 */ |
|
2325 if (!context) { |
|
2326 #ifdef HAVE_ZLIB_H |
|
2327 if ((compression > 0) && (compression <= 9) && (is_file_uri == 1)) |
|
2328 { |
|
2329 context = xmlGzfileOpenW(URI, compression); |
|
2330 if (context) { |
|
2331 ret = xmlAllocOutputBuffer(encoder); |
|
2332 if (ret) { |
|
2333 ret->context = context; |
|
2334 ret->writecallback = xmlGzfileWrite; |
|
2335 ret->closecallback = xmlGzfileClose; |
|
2336 } |
|
2337 return(ret); |
|
2338 } |
|
2339 } |
|
2340 #endif |
|
2341 for (i = xmlOutputCallbackNr - 1;i >= 0;i--) |
|
2342 { |
|
2343 if (xmlOutputCallbackTable[i].matchcallback && |
|
2344 xmlOutputCallbackTable[i].matchcallback(URI) != 0) |
|
2345 { |
|
2346 #if defined(LIBXML_HTTP_ENABLED) && defined(HAVE_ZLIB_H) |
|
2347 /* Need to pass compression parameter into HTTP open calls */ |
|
2348 if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) |
|
2349 context = xmlIOHTTPOpenW(URI, compression); |
|
2350 else |
|
2351 #endif |
|
2352 context = xmlOutputCallbackTable[i].opencallback(URI); |
|
2353 if (context) |
|
2354 break; |
|
2355 } |
|
2356 } |
|
2357 } |
|
2358 |
|
2359 if (!context) { |
|
2360 return(NULL); |
|
2361 } |
|
2362 |
|
2363 /* |
|
2364 * Allocate the Output buffer front-end. |
|
2365 */ |
|
2366 ret = xmlAllocOutputBuffer(encoder); |
|
2367 if (ret) { |
|
2368 ret->context = context; |
|
2369 ret->writecallback = xmlOutputCallbackTable[i].writecallback; |
|
2370 ret->closecallback = xmlOutputCallbackTable[i].closecallback; |
|
2371 } |
|
2372 return(ret); |
|
2373 } |
|
2374 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
2375 |
|
2376 #ifndef XMLENGINE_EXCLUDE_FILE_FUNC |
|
2377 /** |
|
2378 * xmlParserInputBufferCreateFile: |
|
2379 * @param file a FILE* |
|
2380 * @param enc the charset encoding if known |
|
2381 * |
|
2382 * Create a buffered parser input for the progressive parsing of a FILE * |
|
2383 * buffered C I/O |
|
2384 * |
|
2385 * Returns the new parser input or NULL |
|
2386 */ |
|
2387 XMLPUBFUNEXPORT xmlParserInputBufferPtr |
|
2388 xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) |
|
2389 { |
|
2390 xmlParserInputBufferPtr ret; |
|
2391 |
|
2392 if (xmlInputCallbackInitialized == 0) |
|
2393 xmlRegisterDefaultInputCallbacks(); |
|
2394 |
|
2395 if (!file) |
|
2396 return(NULL); |
|
2397 |
|
2398 ret = xmlAllocParserInputBuffer(enc); |
|
2399 if (ret) { |
|
2400 ret->context = file; |
|
2401 ret->readcallback = xmlFileRead; |
|
2402 ret->closecallback = xmlFileFlush; |
|
2403 } |
|
2404 |
|
2405 return(ret); |
|
2406 } |
|
2407 #endif |
|
2408 |
|
2409 #ifdef LIBXML_OUTPUT_ENABLED |
|
2410 /** |
|
2411 * xmlOutputBufferCreateFile: |
|
2412 * @param file a FILE* |
|
2413 * @param encoder the encoding converter or NULL |
|
2414 * |
|
2415 * Create a buffered output for the progressive saving to a FILE * |
|
2416 * buffered C I/O |
|
2417 * |
|
2418 * Returns the new parser output or NULL in OOM |
|
2419 * OOM: possible --> NULL is returned |
|
2420 */ |
|
2421 XMLPUBFUNEXPORT xmlOutputBufferPtr |
|
2422 xmlOutputBufferCreateFile(FILE *file, xmlCharEncodingHandlerPtr encoder) |
|
2423 { |
|
2424 LOAD_GS_DIRECT |
|
2425 xmlOutputBufferPtr ret; |
|
2426 |
|
2427 if (xmlOutputCallbackInitialized == 0) |
|
2428 xmlRegisterDefaultOutputCallbacks(); |
|
2429 |
|
2430 if (file == NULL) return(NULL); |
|
2431 |
|
2432 ret = xmlAllocOutputBuffer(encoder); |
|
2433 |
|
2434 if(ret){ |
|
2435 ret->context = file; |
|
2436 ret->writecallback = xmlFileWrite; |
|
2437 ret->closecallback = xmlFileFlush; |
|
2438 } |
|
2439 return(ret); |
|
2440 } |
|
2441 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
2442 |
|
2443 |
|
2444 /** |
|
2445 * xmlParserInputBufferCreateFd: |
|
2446 * @param fd a file descriptor number |
|
2447 * @param enc the charset encoding if known |
|
2448 * |
|
2449 * Create a buffered parser input for the progressive parsing for the input |
|
2450 * from a file descriptor |
|
2451 * |
|
2452 * Returns the new parser input or NULL |
|
2453 */ |
|
2454 XMLPUBFUNEXPORT xmlParserInputBufferPtr |
|
2455 xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) |
|
2456 { |
|
2457 xmlParserInputBufferPtr ret; |
|
2458 |
|
2459 if (fd < 0) return(NULL); |
|
2460 |
|
2461 ret = xmlAllocParserInputBuffer(enc); |
|
2462 if (ret != NULL) { |
|
2463 ret->context = (void *) (long) fd; |
|
2464 ret->readcallback = xmlFdRead; |
|
2465 ret->closecallback = xmlFdClose; |
|
2466 } |
|
2467 |
|
2468 return(ret); |
|
2469 } |
|
2470 |
|
2471 /** |
|
2472 * xmlParserInputBufferCreateMem: |
|
2473 * @param mem the memory input |
|
2474 * @param size the length of the memory block |
|
2475 * @param enc the charset encoding if known |
|
2476 * |
|
2477 * Create a buffered parser input for the progressive parsing for the input |
|
2478 * from a memory area. |
|
2479 * |
|
2480 * Returns the new parser input or NULL |
|
2481 * |
|
2482 * OOM: possible --> sets OOM flag, returns NULL for mem!=NULL && size>0 |
|
2483 */ |
|
2484 XMLPUBFUNEXPORT xmlParserInputBufferPtr |
|
2485 xmlParserInputBufferCreateMem(const char *mem, int size, xmlCharEncoding enc) |
|
2486 { |
|
2487 LOAD_GS_DIRECT |
|
2488 xmlParserInputBufferPtr ret; |
|
2489 |
|
2490 if (size <= 0) return(NULL); |
|
2491 if (mem == NULL) return(NULL); |
|
2492 |
|
2493 ret = xmlAllocParserInputBuffer(enc); |
|
2494 if (ret != NULL) { |
|
2495 ret->context = (void*) mem; |
|
2496 ret->readcallback = (xmlInputReadCallback) xmlNop; |
|
2497 ret->closecallback = NULL; |
|
2498 xmlBufferAdd(ret->buffer, (const xmlChar*) mem, size); |
|
2499 if(OOM_FLAG){ |
|
2500 xmlFreeParserInputBuffer(ret); |
|
2501 return NULL; |
|
2502 } |
|
2503 } |
|
2504 |
|
2505 return(ret); |
|
2506 } |
|
2507 |
|
2508 /** |
|
2509 * xmlParserInputBufferCreateStatic: |
|
2510 * @param mem the memory input |
|
2511 * @param size the length of the memory block |
|
2512 * @param enc the charset encoding if known |
|
2513 * |
|
2514 * Create a buffered parser input for the progressive parsing for the input |
|
2515 * from an immutable memory area. This will not copy the memory area to |
|
2516 * the buffer, but the memory is expected to be available until the end of |
|
2517 * the parsing, this is useful for example when using mmap'ed file. |
|
2518 * |
|
2519 * Returns the new parser input or NULL |
|
2520 */ |
|
2521 XMLPUBFUNEXPORT xmlParserInputBufferPtr |
|
2522 xmlParserInputBufferCreateStatic(const char *mem, int size, xmlCharEncoding enc) |
|
2523 { |
|
2524 LOAD_GS_DIRECT |
|
2525 xmlParserInputBufferPtr ret; |
|
2526 |
|
2527 if (size <= 0) return(NULL); |
|
2528 if (mem == NULL) return(NULL); |
|
2529 |
|
2530 ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
|
2531 if (ret == NULL) { |
|
2532 xmlIOErrMemory(EMBED_ERRTXT("creating input buffer")); |
|
2533 return(NULL); |
|
2534 } |
|
2535 memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); |
|
2536 ret->buffer = xmlBufferCreateStatic((void *)mem, (size_t) size); |
|
2537 if (ret->buffer == NULL) { |
|
2538 xmlFree(ret); |
|
2539 return(NULL); |
|
2540 } |
|
2541 ret->encoder = xmlGetCharEncodingHandler(enc); |
|
2542 if (ret->encoder != NULL) |
|
2543 ret->raw = xmlBufferCreateSize(2 * xmlDefaultBufferSize); |
|
2544 else |
|
2545 ret->raw = NULL; |
|
2546 ret->compressed = -1; |
|
2547 ret->context = (void *) mem; |
|
2548 ret->readcallback = NULL; |
|
2549 ret->closecallback = NULL; |
|
2550 |
|
2551 return(ret); |
|
2552 } |
|
2553 |
|
2554 #ifdef LIBXML_OUTPUT_ENABLED |
|
2555 /** |
|
2556 * xmlOutputBufferCreateFd: |
|
2557 * @param fd a file descriptor number |
|
2558 * @param encoder the encoding converter or NULL |
|
2559 * |
|
2560 * Create a buffered output for the progressive saving |
|
2561 * to a file descriptor |
|
2562 * |
|
2563 * Returns the new parser output or NULL |
|
2564 */ |
|
2565 XMLPUBFUNEXPORT xmlOutputBufferPtr |
|
2566 xmlOutputBufferCreateFd(int fd, xmlCharEncodingHandlerPtr encoder) |
|
2567 { |
|
2568 xmlOutputBufferPtr ret; |
|
2569 |
|
2570 if (fd < 0) return(NULL); |
|
2571 |
|
2572 ret = xmlAllocOutputBuffer(encoder); |
|
2573 if (ret != NULL) { |
|
2574 ret->context = (void *) (long) fd; |
|
2575 ret->writecallback = xmlFdWrite; |
|
2576 ret->closecallback = NULL; |
|
2577 } |
|
2578 |
|
2579 return(ret); |
|
2580 } |
|
2581 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
2582 |
|
2583 /** |
|
2584 * xmlParserInputBufferCreateIO: |
|
2585 * @param ioread an I/O read function |
|
2586 * @param ioclose an I/O close function |
|
2587 * @param ioctx an I/O handler |
|
2588 * @param enc the charset encoding if known |
|
2589 * |
|
2590 * Create a buffered parser input for the progressive parsing for the input |
|
2591 * from an I/O handler |
|
2592 * |
|
2593 * Returns the new parser input or NULL |
|
2594 */ |
|
2595 XMLPUBFUNEXPORT xmlParserInputBufferPtr |
|
2596 xmlParserInputBufferCreateIO(xmlInputReadCallback ioread, |
|
2597 xmlInputCloseCallback ioclose, void *ioctx, xmlCharEncoding enc) |
|
2598 { |
|
2599 xmlParserInputBufferPtr ret; |
|
2600 |
|
2601 if (ioread == NULL) return(NULL); |
|
2602 |
|
2603 ret = xmlAllocParserInputBuffer(enc); |
|
2604 if (ret != NULL) { |
|
2605 ret->context = (void *) ioctx; |
|
2606 ret->readcallback = ioread; |
|
2607 ret->closecallback = ioclose; |
|
2608 } |
|
2609 |
|
2610 return(ret); |
|
2611 } |
|
2612 |
|
2613 #ifdef LIBXML_OUTPUT_ENABLED |
|
2614 /** |
|
2615 * xmlOutputBufferCreateIO: |
|
2616 * @param iowrite an I/O write function |
|
2617 * @param ioclose an I/O close function |
|
2618 * @param ioctx an I/O handler |
|
2619 * @param encoder the charset encoding if known |
|
2620 * |
|
2621 * Create a buffered output for the progressive saving |
|
2622 * to an I/O handler |
|
2623 * |
|
2624 * Returns the new parser output or NULL |
|
2625 */ |
|
2626 XMLPUBFUNEXPORT xmlOutputBufferPtr |
|
2627 xmlOutputBufferCreateIO( |
|
2628 xmlOutputWriteCallback iowrite, |
|
2629 xmlOutputCloseCallback ioclose, |
|
2630 void *ioctx, |
|
2631 xmlCharEncodingHandlerPtr encoder) |
|
2632 { |
|
2633 xmlOutputBufferPtr ret; |
|
2634 |
|
2635 if (iowrite == NULL) return(NULL); |
|
2636 |
|
2637 ret = xmlAllocOutputBuffer(encoder); |
|
2638 if (ret != NULL) { |
|
2639 ret->context = (void*) ioctx; |
|
2640 ret->writecallback = iowrite; |
|
2641 ret->closecallback = ioclose; |
|
2642 } |
|
2643 |
|
2644 return(ret); |
|
2645 } |
|
2646 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
2647 |
|
2648 /** |
|
2649 * xmlParserInputBufferPush: |
|
2650 * @param in a buffered parser input |
|
2651 * @param len the size in bytes of the array. |
|
2652 * @param buf an char array |
|
2653 * |
|
2654 * Push the content of the array in the input buffer |
|
2655 * This routine handle the I18N transcoding to internal UTF-8 |
|
2656 * This is used when operating the parser in progressive (push) mode. |
|
2657 * |
|
2658 * Returns the number of chars read and stored in the buffer, or -1 |
|
2659 * in case of error. |
|
2660 * |
|
2661 * OOM: possible --> |
|
2662 */ |
|
2663 XMLPUBFUNEXPORT int |
|
2664 xmlParserInputBufferPush(xmlParserInputBufferPtr in, |
|
2665 int len, const char* buf) |
|
2666 { |
|
2667 int nbchars; // initialization was unnecessary: = 0; |
|
2668 |
|
2669 if (len < 0) return(0); |
|
2670 |
|
2671 if (!in || in->error) |
|
2672 return(-1); |
|
2673 |
|
2674 if (in->encoder) |
|
2675 { |
|
2676 unsigned int use; |
|
2677 |
|
2678 /* |
|
2679 * Store the data in the incoming raw buffer |
|
2680 */ |
|
2681 if (!in->raw) { |
|
2682 in->raw = xmlBufferCreate(); |
|
2683 } |
|
2684 xmlBufferAdd(in->raw, (const xmlChar*) buf, len); |
|
2685 |
|
2686 /* |
|
2687 * convert as much as possible to the parser reading buffer. |
|
2688 */ |
|
2689 use = in->raw->use; |
|
2690 nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
|
2691 if (nbchars < 0) { |
|
2692 xmlIOErr(XML_IO_ENCODER, NULL); |
|
2693 in->error = XML_IO_ENCODER; |
|
2694 return(-1); |
|
2695 } |
|
2696 in->rawconsumed += (use - in->raw->use); |
|
2697 } else { |
|
2698 nbchars = len; |
|
2699 xmlBufferAdd(in->buffer, (xmlChar*) buf, nbchars); |
|
2700 } |
|
2701 #ifdef DEBUG_INPUT |
|
2702 xmlGenericError(xmlGenericErrorContext, |
|
2703 "I/O: pushed %d chars, buffer %d/%d\n", |
|
2704 nbchars, in->buffer->use, in->buffer->size); |
|
2705 #endif |
|
2706 return(nbchars); |
|
2707 } |
|
2708 |
|
2709 /** |
|
2710 * endOfInput: |
|
2711 * |
|
2712 * When reading from an Input channel indicated end of file or error |
|
2713 * don't reread from it again. |
|
2714 */ |
|
2715 static int |
|
2716 endOfInput ( |
|
2717 void* context ATTRIBUTE_UNUSED, |
|
2718 char* buffer ATTRIBUTE_UNUSED, |
|
2719 int len ATTRIBUTE_UNUSED) |
|
2720 { |
|
2721 return(0); |
|
2722 } |
|
2723 |
|
2724 /** |
|
2725 * xmlParserInputBufferGrow: |
|
2726 * @param in a buffered parser input |
|
2727 * @param len indicative value of the amount of chars to read |
|
2728 * |
|
2729 * Grow up the content of the input buffer, the old data are preserved |
|
2730 * This routine handle the I18N transcoding to internal UTF-8 |
|
2731 * This routine is used when operating the parser in normal (pull) mode |
|
2732 * |
|
2733 * |
|
2734 * |
|
2735 * |
|
2736 * Returns the number of chars read and stored in the buffer, or -1 |
|
2737 * in case of error. |
|
2738 * |
|
2739 * OOM: possible --> sets OOM flag when returns 0 |
|
2740 */ |
|
2741 XMLPUBFUNEXPORT int |
|
2742 xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) |
|
2743 { |
|
2744 LOAD_GS_DIRECT |
|
2745 char *buffer = NULL; |
|
2746 int res = 0; |
|
2747 int nbchars = 0; |
|
2748 int buffree; |
|
2749 unsigned int needSize; |
|
2750 |
|
2751 if ((in == NULL) || (in->error)) return(-1); |
|
2752 if ((len <= MINLEN) && (len != 4)) |
|
2753 len = MINLEN; |
|
2754 |
|
2755 buffree = in->buffer->size - in->buffer->use; |
|
2756 if (buffree <= 0) { |
|
2757 xmlIOErr(XML_IO_BUFFER_FULL, NULL); |
|
2758 in->error = XML_IO_BUFFER_FULL; |
|
2759 return(0); |
|
2760 } |
|
2761 |
|
2762 needSize = in->buffer->use + len + 1; |
|
2763 if (needSize > in->buffer->size) |
|
2764 { |
|
2765 if (!xmlBufferResize(in->buffer, needSize)) |
|
2766 { |
|
2767 xmlIOErrMemory(EMBED_ERRTXT("growing input buffer")); |
|
2768 in->error = XML_ERR_NO_MEMORY; |
|
2769 return(0); |
|
2770 } |
|
2771 } |
|
2772 buffer = (char*)&in->buffer->content[in->buffer->use]; |
|
2773 |
|
2774 /* |
|
2775 * Call the read method for this I/O type. |
|
2776 */ |
|
2777 if (in->readcallback != NULL) { |
|
2778 |
|
2779 res = in->readcallback(in->context, &buffer[0], len); |
|
2780 if (res <= 0) |
|
2781 in->readcallback = endOfInput; |
|
2782 } else { |
|
2783 xmlIOErr(XML_IO_NO_INPUT, NULL); |
|
2784 in->error = XML_IO_NO_INPUT; |
|
2785 return(-1); |
|
2786 } |
|
2787 if (res < 0) { |
|
2788 return(-1); |
|
2789 } |
|
2790 len = res; |
|
2791 if (in->encoder != NULL) { |
|
2792 unsigned int use; |
|
2793 |
|
2794 /* |
|
2795 * Store the data in the incoming raw buffer |
|
2796 */ |
|
2797 if (in->raw == NULL) { |
|
2798 in->raw = xmlBufferCreate(); |
|
2799 if(OOM_FLAG) |
|
2800 return 0; |
|
2801 } |
|
2802 xmlBufferAdd(in->raw, (const xmlChar *) buffer, len); |
|
2803 if(OOM_FLAG) |
|
2804 return 0; |
|
2805 /* |
|
2806 * convert as much as possible to the parser reading buffer. |
|
2807 */ |
|
2808 use = in->raw->use; |
|
2809 nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
|
2810 if(OOM_FLAG) |
|
2811 return 0; |
|
2812 |
|
2813 if (nbchars < 0) { |
|
2814 xmlIOErr(XML_IO_ENCODER, NULL); |
|
2815 in->error = XML_IO_ENCODER; |
|
2816 return(-1); |
|
2817 } |
|
2818 in->rawconsumed += (use - in->raw->use); |
|
2819 } else { |
|
2820 nbchars = len; |
|
2821 in->buffer->use += nbchars; |
|
2822 buffer[nbchars] = 0; |
|
2823 } |
|
2824 #ifdef DEBUG_INPUT |
|
2825 xmlGenericError(xmlGenericErrorContext, |
|
2826 "I/O: read %d chars, buffer %d/%d\n", |
|
2827 nbchars, in->buffer->use, in->buffer->size); |
|
2828 #endif |
|
2829 return(nbchars); |
|
2830 } |
|
2831 |
|
2832 /** |
|
2833 * xmlParserInputBufferRead: |
|
2834 * @param in a buffered parser input |
|
2835 * @param len indicative value of the amount of chars to read |
|
2836 * |
|
2837 * Refresh the content of the input buffer, the old data are considered |
|
2838 * consumed |
|
2839 * This routine handle the I18N transcoding to internal UTF-8 |
|
2840 * |
|
2841 * Returns the number of chars read and stored in the buffer, or -1 |
|
2842 * in case of error. |
|
2843 */ |
|
2844 XMLPUBFUNEXPORT int |
|
2845 xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) |
|
2846 { |
|
2847 if ((in == NULL) || (in->error)) return(-1); |
|
2848 if (in->readcallback != NULL) |
|
2849 return(xmlParserInputBufferGrow(in, len)); |
|
2850 else if ((in->buffer != NULL) && |
|
2851 (in->buffer->alloc == XML_BUFFER_ALLOC_IMMUTABLE)) |
|
2852 return(0); |
|
2853 else |
|
2854 return(-1); |
|
2855 } |
|
2856 |
|
2857 #ifdef LIBXML_OUTPUT_ENABLED |
|
2858 /** |
|
2859 * xmlOutputBufferWrite: |
|
2860 * @param out a buffered parser output |
|
2861 * @param len the size in bytes of the array. |
|
2862 * @param buf an char array |
|
2863 * |
|
2864 * Write the content of the array in the output I/O buffer |
|
2865 * This routine handle the I18N transcoding from internal UTF-8 |
|
2866 * The buffer is lossless, i.e. will store in case of partial |
|
2867 * or delayed writes. |
|
2868 * |
|
2869 * Returns the number of chars immediately written, or -1 |
|
2870 * in case of error. |
|
2871 */ |
|
2872 XMLPUBFUNEXPORT int |
|
2873 xmlOutputBufferWrite(xmlOutputBufferPtr out, int len, const char *buf) |
|
2874 { |
|
2875 int nbchars = 0; /* number of chars to output to I/O */ |
|
2876 int ret; /* return from function call */ |
|
2877 int written = 0; /* number of char written to I/O so far */ |
|
2878 int chunk; /* number of byte curreent processed from buf */ |
|
2879 |
|
2880 if (!out || out->error) |
|
2881 return(-1); |
|
2882 if (len < 0) |
|
2883 return(0); |
|
2884 //if (out->error) return(-1); |
|
2885 |
|
2886 do { |
|
2887 chunk = len; |
|
2888 if (chunk > 4 * MINLEN) |
|
2889 chunk = 4 * MINLEN; |
|
2890 |
|
2891 /* |
|
2892 * first handle encoding stuff. |
|
2893 */ |
|
2894 if (out->encoder) { |
|
2895 /* |
|
2896 * Store the data in the incoming raw buffer |
|
2897 */ |
|
2898 if (!out->conv) { |
|
2899 out->conv = xmlBufferCreate(); |
|
2900 } |
|
2901 xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
|
2902 |
|
2903 if ((out->buffer->use < MINLEN) && (chunk == len)) |
|
2904 goto done; |
|
2905 |
|
2906 /* |
|
2907 * convert as much as possible to the parser reading buffer. |
|
2908 */ |
|
2909 ret = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
|
2910 if ((ret < 0) && (ret != -3)) { |
|
2911 xmlIOErr(XML_IO_ENCODER, NULL); |
|
2912 out->error = XML_IO_ENCODER; |
|
2913 return(-1); |
|
2914 } |
|
2915 nbchars = out->conv->use; |
|
2916 } else { |
|
2917 xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
|
2918 nbchars = out->buffer->use; |
|
2919 } |
|
2920 buf += chunk; |
|
2921 len -= chunk; |
|
2922 |
|
2923 if ((nbchars < MINLEN) && (len <= 0)) |
|
2924 goto done; |
|
2925 |
|
2926 if (out->writecallback) { |
|
2927 /* |
|
2928 * second write the stuff to the I/O channel |
|
2929 */ |
|
2930 if (out->encoder != NULL) { |
|
2931 ret = out->writecallback(out->context, |
|
2932 (const char *)out->conv->content, nbchars); |
|
2933 if (ret >= 0) |
|
2934 xmlBufferShrink(out->conv, ret); |
|
2935 } else { |
|
2936 ret = out->writecallback(out->context, |
|
2937 (const char *)out->buffer->content, nbchars); |
|
2938 if (ret >= 0) |
|
2939 xmlBufferShrink(out->buffer, ret); |
|
2940 } |
|
2941 if (ret < 0) { |
|
2942 xmlIOErr(XML_IO_WRITE, NULL); |
|
2943 out->error = XML_IO_WRITE; |
|
2944 return(ret); |
|
2945 } |
|
2946 out->written += ret; |
|
2947 } |
|
2948 written += nbchars; |
|
2949 } while (len > 0); |
|
2950 |
|
2951 done: |
|
2952 #ifdef DEBUG_INPUT |
|
2953 xmlGenericError(xmlGenericErrorContext, |
|
2954 "I/O: wrote %d chars\n", written); |
|
2955 #endif |
|
2956 return(written); |
|
2957 } |
|
2958 |
|
2959 /** |
|
2960 * xmlEscapeContent: |
|
2961 * @param out a pointer to an array of bytes to store the result |
|
2962 * @param outlen the length of out |
|
2963 * @param in a pointer to an array of unescaped UTF-8 bytes |
|
2964 * @param inlen the length of in |
|
2965 * |
|
2966 * Take a block of UTF-8 chars in and escape them. |
|
2967 * Returns 0 if success, or -1 otherwise |
|
2968 * The value of inlen after return is the number of octets consumed |
|
2969 * if the return value is positive, else unpredictable. |
|
2970 * The value of outlen after return is the number of octets consumed. |
|
2971 */ |
|
2972 static int |
|
2973 xmlEscapeContent(unsigned char* out, int *outlen, const xmlChar* in, int *inlen) |
|
2974 { |
|
2975 unsigned char* outstart = out; |
|
2976 const unsigned char* base = in; |
|
2977 unsigned char* outend = out + *outlen; |
|
2978 const unsigned char* inend; |
|
2979 |
|
2980 inend = in + (*inlen); |
|
2981 |
|
2982 while ((in < inend) && (out < outend)) |
|
2983 { |
|
2984 if (*in == '<') { |
|
2985 if (outend - out < 4) break; |
|
2986 *out++ = '&'; |
|
2987 *out++ = 'l'; |
|
2988 *out++ = 't'; |
|
2989 *out++ = ';'; |
|
2990 } else if (*in == '>') { |
|
2991 if (outend - out < 4) break; |
|
2992 *out++ = '&'; |
|
2993 *out++ = 'g'; |
|
2994 *out++ = 't'; |
|
2995 *out++ = ';'; |
|
2996 } else if (*in == '&') { |
|
2997 if (outend - out < 5) break; |
|
2998 *out++ = '&'; |
|
2999 *out++ = 'a'; |
|
3000 *out++ = 'm'; |
|
3001 *out++ = 'p'; |
|
3002 *out++ = ';'; |
|
3003 } else if (*in == '\r') { |
|
3004 if (outend - out < 5) break; |
|
3005 *out++ = '&'; |
|
3006 *out++ = '#'; |
|
3007 *out++ = '1'; |
|
3008 *out++ = '3'; |
|
3009 *out++ = ';'; |
|
3010 } else { |
|
3011 *out++ = (unsigned char) *in; |
|
3012 } |
|
3013 ++in; |
|
3014 } |
|
3015 *outlen = out - outstart; |
|
3016 *inlen = in - base; |
|
3017 return(0); |
|
3018 } |
|
3019 |
|
3020 /** |
|
3021 * xmlOutputBufferWriteEscape: |
|
3022 * @param out a buffered parser output |
|
3023 * @param str a zero terminated UTF-8 string |
|
3024 * @param escaping an optional escaping function (or NULL) |
|
3025 * |
|
3026 * Write the content of the string in the output I/O buffer |
|
3027 * This routine escapes the caracters and then handle the I18N |
|
3028 * transcoding from internal UTF-8 |
|
3029 * The buffer is lossless, i.e. will store in case of partial |
|
3030 * or delayed writes. |
|
3031 * |
|
3032 * Returns the number of chars immediately written, or -1 |
|
3033 * in case of error. |
|
3034 */ |
|
3035 XMLPUBFUNEXPORT int |
|
3036 xmlOutputBufferWriteEscape(xmlOutputBufferPtr out, const xmlChar *str, |
|
3037 xmlCharEncodingOutputFunc escaping) |
|
3038 { |
|
3039 int nbchars = 0; /* number of chars to output to I/O */ |
|
3040 int ret; /* return from function call */ |
|
3041 int written = 0; /* number of char written to I/O so far */ |
|
3042 int chunk; /* number of byte currently processed from str */ |
|
3043 int len; /* number of bytes in str */ |
|
3044 int cons; /* byte from str consumed */ |
|
3045 |
|
3046 if (!out || out->error || !str) |
|
3047 return(-1); |
|
3048 len = strlen((const char*)str); |
|
3049 if (len < 0) |
|
3050 return(0); |
|
3051 if (out->error) |
|
3052 return(-1); |
|
3053 if (!escaping) |
|
3054 escaping = xmlEscapeContent; |
|
3055 |
|
3056 do { |
|
3057 /* |
|
3058 * how many bytes to consume and how many bytes to store. |
|
3059 */ |
|
3060 cons = len; |
|
3061 chunk = (out->buffer->size - out->buffer->use) - 1; |
|
3062 |
|
3063 /* |
|
3064 * first handle encoding stuff. |
|
3065 */ |
|
3066 if (out->encoder != NULL) { |
|
3067 /* |
|
3068 * Store the data in the incoming raw buffer |
|
3069 */ |
|
3070 if (out->conv == NULL) { |
|
3071 out->conv = xmlBufferCreate(); |
|
3072 } |
|
3073 ret = escaping(out->buffer->content + out->buffer->use , |
|
3074 &chunk, str, &cons); |
|
3075 if (ret < 0) |
|
3076 return(-1); |
|
3077 out->buffer->use += chunk; |
|
3078 out->buffer->content[out->buffer->use] = 0; |
|
3079 |
|
3080 if ((out->buffer->use < MINLEN) && (cons == len)) |
|
3081 goto done; |
|
3082 |
|
3083 /* |
|
3084 * convert as much as possible to the output buffer. |
|
3085 */ |
|
3086 ret = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
|
3087 if ((ret < 0) && (ret != -3)) { |
|
3088 xmlIOErr(XML_IO_ENCODER, NULL); |
|
3089 out->error = XML_IO_ENCODER; |
|
3090 return(-1); |
|
3091 } |
|
3092 nbchars = out->conv->use; |
|
3093 } else { |
|
3094 ret = escaping(out->buffer->content + out->buffer->use , |
|
3095 &chunk, str, &cons); |
|
3096 if (ret < 0) |
|
3097 return(-1); |
|
3098 out->buffer->use += chunk; |
|
3099 out->buffer->content[out->buffer->use] = 0; |
|
3100 nbchars = out->buffer->use; |
|
3101 } |
|
3102 str += cons; |
|
3103 len -= cons; |
|
3104 |
|
3105 if ((nbchars < MINLEN) && (len <= 0)) |
|
3106 goto done; |
|
3107 |
|
3108 if (out->writecallback) { |
|
3109 /* |
|
3110 * second write the stuff to the I/O channel |
|
3111 */ |
|
3112 if (out->encoder != NULL) { |
|
3113 ret = out->writecallback(out->context, |
|
3114 (const char *)out->conv->content, nbchars); |
|
3115 if (ret >= 0) |
|
3116 xmlBufferShrink(out->conv, ret); |
|
3117 } else { |
|
3118 ret = out->writecallback(out->context, |
|
3119 (const char *)out->buffer->content, nbchars); |
|
3120 if (ret >= 0) |
|
3121 xmlBufferShrink(out->buffer, ret); |
|
3122 } |
|
3123 if (ret < 0) { |
|
3124 xmlIOErr(XML_IO_WRITE, NULL); |
|
3125 out->error = XML_IO_WRITE; |
|
3126 return(ret); |
|
3127 } |
|
3128 out->written += ret; |
|
3129 } else if (out->buffer->size - out->buffer->use < MINLEN) { |
|
3130 if (!xmlBufferResize(out->buffer, out->buffer->size + MINLEN)) |
|
3131 { |
|
3132 chunk = out->buffer->size - out->buffer->use - 1; |
|
3133 if(chunk <= 0) |
|
3134 { |
|
3135 /* can't proceed without more buffer */ |
|
3136 out->error = XML_ERR_NO_MEMORY; |
|
3137 return(-1); |
|
3138 } |
|
3139 |
|
3140 } |
|
3141 } |
|
3142 written += nbchars; |
|
3143 } while (len > 0); |
|
3144 |
|
3145 done: |
|
3146 #ifdef DEBUG_INPUT |
|
3147 xmlGenericError(xmlGenericErrorContext, "I/O: wrote %d chars\n", written); |
|
3148 #endif |
|
3149 return(written); |
|
3150 } |
|
3151 |
|
3152 /** |
|
3153 * xmlOutputBufferWriteString: |
|
3154 * @param out a buffered parser output |
|
3155 * @param str a zero terminated C string |
|
3156 * |
|
3157 * Write the content of the string in the output I/O buffer |
|
3158 * This routine handle the I18N transcoding from internal UTF-8 |
|
3159 * The buffer is lossless, i.e. will store in case of partial |
|
3160 * or delayed writes. |
|
3161 * |
|
3162 * Returns the number of chars immediately written, or -1 |
|
3163 * in case of error. |
|
3164 * |
|
3165 * OOM: possible |
|
3166 */ |
|
3167 XMLPUBFUNEXPORT int |
|
3168 xmlOutputBufferWriteString(xmlOutputBufferPtr out, const char *str) |
|
3169 { |
|
3170 int len; |
|
3171 |
|
3172 if (!out || out->error || !str) |
|
3173 return(-1); |
|
3174 len = strlen(str); |
|
3175 |
|
3176 if (len > 0) |
|
3177 return(xmlOutputBufferWrite(out, len, str)); |
|
3178 return(len); |
|
3179 } |
|
3180 |
|
3181 /** |
|
3182 * xmlOutputBufferFlush: |
|
3183 * @param out a buffered output |
|
3184 * |
|
3185 * flushes the output I/O channel |
|
3186 * |
|
3187 * Returns the number of byte written or -1 in case of error. |
|
3188 */ |
|
3189 XMLPUBFUNEXPORT int |
|
3190 xmlOutputBufferFlush(xmlOutputBufferPtr out) |
|
3191 { |
|
3192 int ret = 0; |
|
3193 |
|
3194 if (!out || out->error) |
|
3195 return(-1); |
|
3196 |
|
3197 // XMLENGINE: Replaced code |
|
3198 /* |
|
3199 if (out->conv && out->encoder) |
|
3200 { |
|
3201 int nbchars = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
|
3202 if (nbchars < 0) { |
|
3203 xmlIOErr(XML_IO_ENCODER, NULL); |
|
3204 out->error = XML_IO_ENCODER; |
|
3205 return(-1); |
|
3206 } |
|
3207 } |
|
3208 |
|
3209 if (out->conv) && |
|
3210 out->encoder && |
|
3211 out->writecallback) |
|
3212 { |
|
3213 ret = out->writecallback( |
|
3214 out->context, |
|
3215 (const char *)out->conv->content, |
|
3216 out->conv->use); |
|
3217 if (ret >= 0) |
|
3218 xmlBufferShrink(out->conv, ret); |
|
3219 } else if (out->writecallback != NULL) { |
|
3220 ret = out->writecallback( |
|
3221 out->context, |
|
3222 (const char*) out->buffer->content, |
|
3223 out->buffer->use); |
|
3224 if (ret >= 0) |
|
3225 xmlBufferShrink(out->buffer, ret); |
|
3226 } |
|
3227 */ |
|
3228 // ----------- |
|
3229 if (out->writecallback) |
|
3230 { |
|
3231 xmlBufferPtr buffer; |
|
3232 |
|
3233 /* |
|
3234 * first handle encoding stuff. |
|
3235 */ |
|
3236 if (out->conv && out->encoder) |
|
3237 { |
|
3238 /* |
|
3239 * convert as much as possible to the parser reading buffer. |
|
3240 */ |
|
3241 int nbchars; |
|
3242 |
|
3243 buffer = out->conv; |
|
3244 nbchars = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
|
3245 if (nbchars < 0) { |
|
3246 xmlIOErr(XML_IO_ENCODER, NULL); |
|
3247 out->error = XML_IO_ENCODER; |
|
3248 return(-1); |
|
3249 } |
|
3250 } else { |
|
3251 buffer = out->buffer; |
|
3252 } |
|
3253 |
|
3254 /* |
|
3255 * second flush the stuff to the I/O channel |
|
3256 */ |
|
3257 ret = out->writecallback( |
|
3258 out->context, |
|
3259 (const char*) buffer->content, |
|
3260 buffer->use); |
|
3261 if (ret >= 0) |
|
3262 xmlBufferShrink(buffer, ret); |
|
3263 } |
|
3264 if (ret < 0) { |
|
3265 xmlIOErr(XML_IO_FLUSH, NULL); |
|
3266 out->error = XML_IO_FLUSH; |
|
3267 return(ret); |
|
3268 } |
|
3269 out->written += ret; |
|
3270 |
|
3271 #ifdef DEBUG_INPUT |
|
3272 xmlGenericError(xmlGenericErrorContext, "I/O: flushed %d chars\n", ret); |
|
3273 #endif |
|
3274 return(ret); |
|
3275 } |
|
3276 #endif /* LIBXML_OUTPUT_ENABLED */ |
|
3277 |
|
3278 /** |
|
3279 * xmlParserGetDirectory: |
|
3280 * @param filename the path to a file |
|
3281 * |
|
3282 * lookup the directory for that file |
|
3283 * |
|
3284 * Returns a new allocated string containing the directory, or NULL. |
|
3285 */ |
|
3286 XMLPUBFUNEXPORT char* |
|
3287 xmlParserGetDirectory(const char* filename) |
|
3288 { |
|
3289 LOAD_GS_DIRECT |
|
3290 char* ret = NULL; |
|
3291 char dir[1024]; |
|
3292 char* cur; |
|
3293 char sep; |
|
3294 |
|
3295 if (!filename) |
|
3296 return(NULL); |
|
3297 |
|
3298 if (xmlInputCallbackInitialized == 0) |
|
3299 xmlRegisterDefaultInputCallbacks(); |
|
3300 |
|
3301 |
|
3302 sep = '\\'; // NOTE: All backslashes are converted to slashes |
|
3303 // when converting all local paths to URIs; |
|
3304 // Later they are converted to backslashes.. |
|
3305 // Seems inefficient, but works for now... |
|
3306 |
|
3307 strncpy(dir, filename, 1023); |
|
3308 dir[1023] = 0; |
|
3309 cur = &dir[strlen(dir)]; |
|
3310 while (cur > dir) { |
|
3311 if (*cur == sep) |
|
3312 break; |
|
3313 cur --; |
|
3314 } |
|
3315 if (*cur == sep) { |
|
3316 if (cur == dir) |
|
3317 dir[1] = 0; |
|
3318 else |
|
3319 *cur = 0; |
|
3320 ret = xmlMemStrdup(dir); |
|
3321 } else { |
|
3322 if (getcwd(dir, 1024)) { |
|
3323 dir[1023] = 0; |
|
3324 ret = xmlMemStrdup(dir); |
|
3325 } |
|
3326 } |
|
3327 return(ret); |
|
3328 } |
|
3329 |
|
3330 /**************************************************************** |
|
3331 * * |
|
3332 * External entities loading * |
|
3333 * * |
|
3334 ****************************************************************/ |
|
3335 |
|
3336 /** |
|
3337 * xmlCheckHTTPInput: |
|
3338 * @param ctxt an XML parser context |
|
3339 * @param ret an XML parser input |
|
3340 * |
|
3341 * Check an input in case it was created from an HTTP stream, in that |
|
3342 * case it will handle encoding and update of the base URL in case of |
|
3343 * redirection. It also checks for HTTP errors in which case the input |
|
3344 * is cleanly freed up and an appropriate error is raised in context |
|
3345 * |
|
3346 * Returns the input or NULL in case of HTTP error. |
|
3347 */ |
|
3348 XMLPUBFUNEXPORT xmlParserInputPtr |
|
3349 xmlCheckHTTPInput(xmlParserCtxtPtr ctxt, xmlParserInputPtr ret) |
|
3350 { |
|
3351 #ifdef LIBXML_HTTP_ENABLED |
|
3352 if ((ret != NULL) && (ret->buf != NULL) && |
|
3353 (ret->buf->readcallback == xmlIOHTTPRead) && |
|
3354 (ret->buf->context != NULL)) { |
|
3355 const char *encoding; |
|
3356 const char *redir; |
|
3357 const char *mime; |
|
3358 int code; |
|
3359 |
|
3360 code = xmlNanoHTTPReturnCode(ret->buf->context); |
|
3361 if (code >= 400) { |
|
3362 /* fatal error */ |
|
3363 if (ret->filename != NULL) |
|
3364 __xmlLoaderErr(ctxt, "failed to load HTTP resource \"%s\"\n", |
|
3365 (const char *) ret->filename); |
|
3366 else |
|
3367 __xmlLoaderErr(ctxt, "failed to load HTTP resource\n", NULL); |
|
3368 xmlFreeInputStream(ret); |
|
3369 ret = NULL; |
|
3370 } else { |
|
3371 |
|
3372 mime = xmlNanoHTTPMimeType(ret->buf->context); |
|
3373 if ((xmlStrstr(BAD_CAST mime, BAD_CAST "/xml")) || |
|
3374 (xmlStrstr(BAD_CAST mime, BAD_CAST "+xml"))) { |
|
3375 encoding = xmlNanoHTTPEncoding(ret->buf->context); |
|
3376 if (encoding != NULL) { |
|
3377 xmlCharEncodingHandlerPtr handler; |
|
3378 |
|
3379 handler = xmlFindCharEncodingHandler(encoding); |
|
3380 if (handler != NULL) { |
|
3381 xmlSwitchInputEncoding(ctxt, ret, handler); |
|
3382 } else { |
|
3383 __xmlErrEncoding(ctxt, XML_ERR_UNKNOWN_ENCODING, |
|
3384 "Unknown encoding %s", |
|
3385 BAD_CAST encoding, NULL); |
|
3386 } |
|
3387 if (ret->encoding == NULL) |
|
3388 ret->encoding = xmlStrdup(BAD_CAST encoding); |
|
3389 } |
|
3390 #if 0 |
|
3391 } else if (xmlStrstr(BAD_CAST mime, BAD_CAST "html")) { |
|
3392 #endif |
|
3393 } |
|
3394 redir = xmlNanoHTTPRedir(ret->buf->context); |
|
3395 if (redir != NULL) { |
|
3396 if (ret->filename != NULL) |
|
3397 xmlFree((xmlChar *) ret->filename); |
|
3398 if (ret->directory != NULL) { |
|
3399 xmlFree((xmlChar *) ret->directory); |
|
3400 ret->directory = NULL; |
|
3401 } |
|
3402 ret->filename = |
|
3403 (char *) xmlStrdup((const xmlChar *) redir); |
|
3404 } |
|
3405 } |
|
3406 } |
|
3407 #endif |
|
3408 return(ret); |
|
3409 } |
|
3410 |
|
3411 |
|
3412 static int xmlSysIDExists(const char* URL) |
|
3413 { |
|
3414 #ifdef HAVE_STAT |
|
3415 int ret; |
|
3416 struct stat info; |
|
3417 const char *path; |
|
3418 |
|
3419 if (URL == NULL) |
|
3420 return(0); |
|
3421 |
|
3422 if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file://localhost/", 17)) |
|
3423 path = &URL[17]; |
|
3424 else if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file:///", 8)) { |
|
3425 path = &URL[8]; |
|
3426 } else { |
|
3427 path = URL; |
|
3428 } |
|
3429 |
|
3430 ret = stat(path, &info); |
|
3431 if (ret == 0) |
|
3432 return(1); |
|
3433 #endif |
|
3434 return(0); |
|
3435 } |
|
3436 |
|
3437 /** |
|
3438 * xmlDefaultExternalEntityLoader: |
|
3439 * @param URL the URL for the entity to load |
|
3440 * @param ID the System ID for the entity to load |
|
3441 * @param ctxt the context in which the entity is called or NULL |
|
3442 * |
|
3443 * By default we don't load external entitites, yet. |
|
3444 * |
|
3445 * Returns a new allocated xmlParserInputPtr, or NULL. |
|
3446 */ |
|
3447 xmlParserInputPtr |
|
3448 xmlDefaultExternalEntityLoader(const char *URL, const char *ID, xmlParserCtxtPtr ctxt) |
|
3449 { |
|
3450 xmlParserInputPtr ret = NULL; |
|
3451 xmlChar *resource = NULL; |
|
3452 |
|
3453 #ifdef LIBXML_CATALOG_ENABLED |
|
3454 xmlCatalogAllow pref; |
|
3455 #endif |
|
3456 |
|
3457 #ifdef DEBUG_EXTERNAL_ENTITIES |
|
3458 xmlGenericError(xmlGenericErrorContext, |
|
3459 "xmlDefaultExternalEntityLoader(%s, xxx)\n", URL); |
|
3460 #endif |
|
3461 #ifdef LIBXML_CATALOG_ENABLED |
|
3462 if ((ctxt != NULL) && (ctxt->options & XML_PARSE_NONET)) { |
|
3463 int options = ctxt->options; |
|
3464 |
|
3465 ctxt->options -= XML_PARSE_NONET; |
|
3466 ret = xmlNoNetExternalEntityLoader(URL, ID, ctxt); |
|
3467 ctxt->options = options; |
|
3468 return(ret); |
|
3469 } |
|
3470 |
|
3471 /* |
|
3472 * If the resource doesn't exists as a file, |
|
3473 * try to load it from the resource pointed in the catalogs |
|
3474 */ |
|
3475 pref = xmlCatalogGetDefaults(); |
|
3476 |
|
3477 if ((pref != XML_CATA_ALLOW_NONE) && (!xmlSysIDExists(URL))) { |
|
3478 /* |
|
3479 * Do a local lookup |
|
3480 */ |
|
3481 if ((ctxt->catalogs != NULL) && |
|
3482 ((pref == XML_CATA_ALLOW_ALL) || |
|
3483 (pref == XML_CATA_ALLOW_DOCUMENT))) { |
|
3484 resource = xmlCatalogLocalResolve(ctxt->catalogs, |
|
3485 (const xmlChar *) ID, |
|
3486 (const xmlChar *) URL); |
|
3487 } |
|
3488 /* |
|
3489 * Try a global lookup |
|
3490 */ |
|
3491 if ((resource == NULL) && |
|
3492 ((pref == XML_CATA_ALLOW_ALL) || |
|
3493 (pref == XML_CATA_ALLOW_GLOBAL))) { |
|
3494 resource = xmlCatalogResolve((const xmlChar *) ID, |
|
3495 (const xmlChar *) URL); |
|
3496 } |
|
3497 if ((resource == NULL) && (URL != NULL)) |
|
3498 resource = xmlStrdup((const xmlChar *) URL); |
|
3499 |
|
3500 /* |
|
3501 * |
|
3502 */ |
|
3503 if ((resource != NULL) |
|
3504 && (!xmlSysIDExists((const char *) resource))) { |
|
3505 xmlChar *tmp = NULL; |
|
3506 |
|
3507 if ((ctxt->catalogs != NULL) && |
|
3508 ((pref == XML_CATA_ALLOW_ALL) || |
|
3509 (pref == XML_CATA_ALLOW_DOCUMENT))) { |
|
3510 tmp = xmlCatalogLocalResolveURI(ctxt->catalogs, resource); |
|
3511 } |
|
3512 if ((tmp == NULL) && |
|
3513 ((pref == XML_CATA_ALLOW_ALL) || |
|
3514 (pref == XML_CATA_ALLOW_GLOBAL))) { |
|
3515 tmp = xmlCatalogResolveURI(resource); |
|
3516 } |
|
3517 |
|
3518 if (tmp) { |
|
3519 xmlFree(resource); |
|
3520 resource = tmp; |
|
3521 } |
|
3522 } |
|
3523 } |
|
3524 #endif |
|
3525 |
|
3526 if (!resource) |
|
3527 resource = (xmlChar*) URL; |
|
3528 |
|
3529 if (!resource) { |
|
3530 if (!ID) |
|
3531 ID = "NULL"; |
|
3532 __xmlLoaderErr(ctxt, EMBED_ERRTXT("failed to load external entity \"%s\"\n"), ID); |
|
3533 return (NULL); |
|
3534 } |
|
3535 ret = xmlNewInputFromFile(ctxt, (const char*) resource); |
|
3536 if (resource && resource != (xmlChar*)URL) |
|
3537 xmlFree(resource); |
|
3538 return (ret); |
|
3539 } |
|
3540 |
|
3541 #ifndef XMLENGINE_EXCLUDE_UNUSED |
|
3542 /** |
|
3543 * xmlSetExternalEntityLoader: |
|
3544 * @param f the new entity resolver function |
|
3545 * |
|
3546 * Changes the defaultexternal entity resolver function for the application |
|
3547 */ |
|
3548 void |
|
3549 xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { |
|
3550 xmlCurrentExternalEntityLoader = f; |
|
3551 } |
|
3552 |
|
3553 /** |
|
3554 * xmlGetExternalEntityLoader: |
|
3555 * |
|
3556 * Get the default external entity resolver function for the application |
|
3557 * |
|
3558 * Returns the xmlExternalEntityLoader function pointer |
|
3559 */ |
|
3560 xmlExternalEntityLoader |
|
3561 xmlGetExternalEntityLoader(void) { |
|
3562 return(xmlCurrentExternalEntityLoader); |
|
3563 } |
|
3564 #endif /* ifndef XMLENGINE_EXCLUDE_UNUSED */ |
|
3565 |
|
3566 /** |
|
3567 * xmlLoadExternalEntity: |
|
3568 * @param URL the URL for the entity to load |
|
3569 * @param ID the Public ID for the entity to load |
|
3570 * @param ctxt the context in which the entity is called or NULL |
|
3571 * |
|
3572 * Load an external entity, note that the use of this function for |
|
3573 * unparsed entities may generate problems |
|
3574 * |
|
3575 * |
|
3576 * Returns the xmlParserInputPtr or NULL |
|
3577 * |
|
3578 * OOM: |
|
3579 */ |
|
3580 XMLPUBFUNEXPORT xmlParserInputPtr |
|
3581 xmlLoadExternalEntity(const char *URL, const char *ID, xmlParserCtxtPtr ctxt) |
|
3582 { |
|
3583 LOAD_GS_DIRECT |
|
3584 if (URL && (xmlSysIDExists(URL) == 0)) { |
|
3585 char* canonicFilename; |
|
3586 xmlParserInputPtr ret; |
|
3587 |
|
3588 canonicFilename = (char *) xmlCanonicPath((const xmlChar *) URL); |
|
3589 if (!canonicFilename) { |
|
3590 xmlIOErrMemory(EMBED_ERRTXT("building canonical path\n")); |
|
3591 return(NULL); |
|
3592 } |
|
3593 |
|
3594 ret = xmlCurrentExternalEntityLoader(canonicFilename, ID, ctxt); |
|
3595 xmlFree(canonicFilename); |
|
3596 return(ret); |
|
3597 } |
|
3598 return(xmlCurrentExternalEntityLoader(URL, ID, ctxt)); |
|
3599 } |
|
3600 |
|
3601 /************************************************************************ |
|
3602 * * |
|
3603 * Disabling Network access * |
|
3604 * * |
|
3605 ************************************************************************/ |
|
3606 |
|
3607 #ifdef LIBXML_CATALOG_ENABLED |
|
3608 static int |
|
3609 xmlNoNetExists(const char *URL) |
|
3610 { |
|
3611 #ifdef HAVE_STAT |
|
3612 int ret; |
|
3613 struct stat info; |
|
3614 const char *path; |
|
3615 |
|
3616 if (!URL) |
|
3617 return (0); |
|
3618 |
|
3619 if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file://localhost/", 17)) |
|
3620 path = &URL[17]; |
|
3621 else if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file:///", 8)) { |
|
3622 path = &URL[8]; |
|
3623 } else |
|
3624 path = URL; |
|
3625 ret = stat(path, &info); |
|
3626 if (ret == 0) |
|
3627 return (1); |
|
3628 #endif |
|
3629 return (0); |
|
3630 } |
|
3631 #endif |
|
3632 |
|
3633 /** |
|
3634 * xmlNoNetExternalEntityLoader: |
|
3635 * @param URL the URL for the entity to load |
|
3636 * @param ID the System ID for the entity to load |
|
3637 * @param ctxt the context in which the entity is called or NULL |
|
3638 * |
|
3639 * A specific entity loader disabling network accesses, though still |
|
3640 * allowing local catalog accesses for resolution. |
|
3641 * |
|
3642 * Returns a new allocated xmlParserInputPtr, or NULL. |
|
3643 */ |
|
3644 XMLPUBFUNEXPORT xmlParserInputPtr |
|
3645 xmlNoNetExternalEntityLoader(const char *URL, const char *ID, xmlParserCtxtPtr ctxt) |
|
3646 { |
|
3647 xmlParserInputPtr input = NULL; |
|
3648 xmlChar *resource = NULL; |
|
3649 |
|
3650 #ifdef LIBXML_CATALOG_ENABLED |
|
3651 xmlCatalogAllow pref; |
|
3652 |
|
3653 /* |
|
3654 * If the resource doesn't exists as a file, |
|
3655 * try to load it from the resource pointed in the catalogs |
|
3656 */ |
|
3657 pref = xmlCatalogGetDefaults(); |
|
3658 |
|
3659 if ((pref != XML_CATA_ALLOW_NONE) && (!xmlNoNetExists(URL))) { |
|
3660 /* |
|
3661 * Do a local lookup |
|
3662 */ |
|
3663 if ((ctxt->catalogs != NULL) && |
|
3664 ((pref == XML_CATA_ALLOW_ALL) || |
|
3665 (pref == XML_CATA_ALLOW_DOCUMENT))) { |
|
3666 resource = xmlCatalogLocalResolve(ctxt->catalogs, |
|
3667 (const xmlChar *)ID, |
|
3668 (const xmlChar *)URL); |
|
3669 } |
|
3670 /* |
|
3671 * Try a global lookup |
|
3672 */ |
|
3673 if ((resource == NULL) && |
|
3674 ((pref == XML_CATA_ALLOW_ALL) || |
|
3675 (pref == XML_CATA_ALLOW_GLOBAL))) { |
|
3676 resource = xmlCatalogResolve((const xmlChar *)ID, |
|
3677 (const xmlChar *)URL); |
|
3678 } |
|
3679 if ((resource == NULL) && (URL != NULL)) |
|
3680 resource = xmlStrdup((const xmlChar *) URL); |
|
3681 |
|
3682 /* |
|
3683 * |
|
3684 */ |
|
3685 if ((resource != NULL) && (!xmlNoNetExists((const char *)resource))) { |
|
3686 xmlChar *tmp = NULL; |
|
3687 |
|
3688 if ((ctxt->catalogs != NULL) && |
|
3689 ((pref == XML_CATA_ALLOW_ALL) || |
|
3690 (pref == XML_CATA_ALLOW_DOCUMENT))) { |
|
3691 tmp = xmlCatalogLocalResolveURI(ctxt->catalogs, resource); |
|
3692 } |
|
3693 if ((tmp == NULL) && |
|
3694 ((pref == XML_CATA_ALLOW_ALL) || |
|
3695 (pref == XML_CATA_ALLOW_GLOBAL))) { |
|
3696 tmp = xmlCatalogResolveURI(resource); |
|
3697 } |
|
3698 |
|
3699 if (tmp != NULL) { |
|
3700 xmlFree(resource); |
|
3701 resource = tmp; |
|
3702 } |
|
3703 } |
|
3704 } |
|
3705 #endif |
|
3706 if (resource == NULL) |
|
3707 resource = (xmlChar *) URL; |
|
3708 |
|
3709 if (resource != NULL) { |
|
3710 if ((!xmlStrncasecmp(BAD_CAST resource, BAD_CAST "ftp://", 6)) || |
|
3711 (!xmlStrncasecmp(BAD_CAST resource, BAD_CAST "http://", 7))) { |
|
3712 xmlIOErr(XML_IO_NETWORK_ATTEMPT, (const char *) resource); |
|
3713 if (resource != (xmlChar *) URL) |
|
3714 xmlFree(resource); |
|
3715 return(NULL); |
|
3716 } |
|
3717 } |
|
3718 input = xmlDefaultExternalEntityLoader((const char *) resource, ID, ctxt); |
|
3719 if (resource != (xmlChar *) URL) |
|
3720 xmlFree(resource); |
|
3721 return(input); |
|
3722 } |
|
3723 |