1 | <?php |
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2 | /** |
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3 | * Smarty plugin |
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4 | * @package Smarty |
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5 | * @subpackage plugins |
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6 | */ |
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7 | |
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8 | |
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9 | /** |
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10 | * Smarty {fetch} plugin |
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11 | * |
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12 | * Type: function<br> |
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13 | * Name: fetch<br> |
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14 | * Purpose: fetch file, web or ftp data and display results |
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15 | * @link http://smarty.php.net/manual/en/language.function.fetch.php {fetch} |
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16 | * (Smarty online manual) |
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17 | * @author Monte Ohrt <monte at ohrt dot com> |
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18 | * @param array |
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19 | * @param Smarty |
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20 | * @return string|null if the assign parameter is passed, Smarty assigns the |
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21 | * result to a template variable |
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22 | */ |
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23 | function smarty_function_fetch($params, &$smarty) |
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24 | { |
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25 | if (empty($params['file'])) { |
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26 | $smarty->_trigger_fatal_error("[plugin] parameter 'file' cannot be empty"); |
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27 | return; |
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28 | } |
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29 | |
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30 | $content = ''; |
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31 | if ($smarty->security && !preg_match('!^(http|ftp)://!i', $params['file'])) { |
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32 | $_params = array('resource_type' => 'file', 'resource_name' => $params['file']); |
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33 | require_once(SMARTY_CORE_DIR . 'core.is_secure.php'); |
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34 | if(!smarty_core_is_secure($_params, $smarty)) { |
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35 | $smarty->_trigger_fatal_error('[plugin] (secure mode) fetch \'' . $params['file'] . '\' is not allowed'); |
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36 | return; |
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37 | } |
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38 | |
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39 | // fetch the file |
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40 | if($fp = @fopen($params['file'],'r')) { |
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41 | while(!feof($fp)) { |
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42 | $content .= fgets ($fp,4096); |
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43 | } |
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44 | fclose($fp); |
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45 | } else { |
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46 | $smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] . '\''); |
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47 | return; |
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48 | } |
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49 | } else { |
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50 | // not a local file |
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51 | if(preg_match('!^http://!i',$params['file'])) { |
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52 | // http fetch |
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53 | if($uri_parts = parse_url($params['file'])) { |
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54 | // set defaults |
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55 | $host = $server_name = $uri_parts['host']; |
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56 | $timeout = 30; |
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57 | $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*"; |
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58 | $agent = "Smarty Template Engine ".$smarty->_version; |
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59 | $referer = ""; |
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60 | $uri = !empty($uri_parts['path']) ? $uri_parts['path'] : '/'; |
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61 | $uri .= !empty($uri_parts['query']) ? '?' . $uri_parts['query'] : ''; |
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62 | $_is_proxy = false; |
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63 | if(empty($uri_parts['port'])) { |
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64 | $port = 80; |
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65 | } else { |
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66 | $port = $uri_parts['port']; |
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67 | } |
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68 | if(!empty($uri_parts['user'])) { |
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69 | $user = $uri_parts['user']; |
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70 | } |
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71 | if(!empty($uri_parts['pass'])) { |
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72 | $pass = $uri_parts['pass']; |
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73 | } |
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74 | // loop through parameters, setup headers |
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75 | foreach($params as $param_key => $param_value) { |
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76 | switch($param_key) { |
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77 | case "file": |
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78 | case "assign": |
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79 | case "assign_headers": |
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80 | break; |
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81 | case "user": |
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82 | if(!empty($param_value)) { |
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83 | $user = $param_value; |
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84 | } |
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85 | break; |
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86 | case "pass": |
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87 | if(!empty($param_value)) { |
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88 | $pass = $param_value; |
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89 | } |
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90 | break; |
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91 | case "accept": |
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92 | if(!empty($param_value)) { |
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93 | $accept = $param_value; |
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94 | } |
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95 | break; |
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96 | case "header": |
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97 | if(!empty($param_value)) { |
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98 | if(!preg_match('![\w\d-]+: .+!',$param_value)) { |
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99 | $smarty->_trigger_fatal_error("[plugin] invalid header format '".$param_value."'"); |
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100 | return; |
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101 | } else { |
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102 | $extra_headers[] = $param_value; |
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103 | } |
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104 | } |
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105 | break; |
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106 | case "proxy_host": |
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107 | if(!empty($param_value)) { |
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108 | $proxy_host = $param_value; |
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109 | } |
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110 | break; |
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111 | case "proxy_port": |
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112 | if(!preg_match('!\D!', $param_value)) { |
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113 | $proxy_port = (int) $param_value; |
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114 | } else { |
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115 | $smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'"); |
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116 | return; |
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117 | } |
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118 | break; |
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119 | case "agent": |
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120 | if(!empty($param_value)) { |
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121 | $agent = $param_value; |
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122 | } |
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123 | break; |
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124 | case "referer": |
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125 | if(!empty($param_value)) { |
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126 | $referer = $param_value; |
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127 | } |
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128 | break; |
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129 | case "timeout": |
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130 | if(!preg_match('!\D!', $param_value)) { |
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131 | $timeout = (int) $param_value; |
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132 | } else { |
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133 | $smarty->_trigger_fatal_error("[plugin] invalid value for attribute '".$param_key."'"); |
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134 | return; |
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135 | } |
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136 | break; |
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137 | default: |
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138 | $smarty->_trigger_fatal_error("[plugin] unrecognized attribute '".$param_key."'"); |
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139 | return; |
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140 | } |
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141 | } |
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142 | if(!empty($proxy_host) && !empty($proxy_port)) { |
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143 | $_is_proxy = true; |
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144 | $fp = fsockopen($proxy_host,$proxy_port,$errno,$errstr,$timeout); |
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145 | } else { |
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146 | $fp = fsockopen($server_name,$port,$errno,$errstr,$timeout); |
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147 | } |
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148 | |
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149 | if(!$fp) { |
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150 | $smarty->_trigger_fatal_error("[plugin] unable to fetch: $errstr ($errno)"); |
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151 | return; |
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152 | } else { |
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153 | if($_is_proxy) { |
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154 | fputs($fp, 'GET ' . $params['file'] . " HTTP/1.0\r\n"); |
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155 | } else { |
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156 | fputs($fp, "GET $uri HTTP/1.0\r\n"); |
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157 | } |
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158 | if(!empty($host)) { |
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159 | fputs($fp, "Host: $host\r\n"); |
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160 | } |
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161 | if(!empty($accept)) { |
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162 | fputs($fp, "Accept: $accept\r\n"); |
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163 | } |
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164 | if(!empty($agent)) { |
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165 | fputs($fp, "User-Agent: $agent\r\n"); |
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166 | } |
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167 | if(!empty($referer)) { |
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168 | fputs($fp, "Referer: $referer\r\n"); |
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169 | } |
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170 | if(isset($extra_headers) && is_array($extra_headers)) { |
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171 | foreach($extra_headers as $curr_header) { |
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172 | fputs($fp, $curr_header."\r\n"); |
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173 | } |
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174 | } |
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175 | if(!empty($user) && !empty($pass)) { |
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176 | fputs($fp, "Authorization: BASIC ".base64_encode("$user:$pass")."\r\n"); |
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177 | } |
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178 | |
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179 | fputs($fp, "\r\n"); |
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180 | while(!feof($fp)) { |
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181 | $content .= fgets($fp,4096); |
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182 | } |
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183 | fclose($fp); |
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184 | $csplit = split("\r\n\r\n",$content,2); |
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185 | |
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186 | $content = $csplit[1]; |
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187 | |
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188 | if(!empty($params['assign_headers'])) { |
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189 | $smarty->assign($params['assign_headers'],split("\r\n",$csplit[0])); |
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190 | } |
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191 | } |
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192 | } else { |
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193 | $smarty->_trigger_fatal_error("[plugin] unable to parse URL, check syntax"); |
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194 | return; |
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195 | } |
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196 | } else { |
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197 | // ftp fetch |
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198 | if($fp = @fopen($params['file'],'r')) { |
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199 | while(!feof($fp)) { |
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200 | $content .= fgets ($fp,4096); |
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201 | } |
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202 | fclose($fp); |
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203 | } else { |
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204 | $smarty->_trigger_fatal_error('[plugin] fetch cannot read file \'' . $params['file'] .'\''); |
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205 | return; |
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206 | } |
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207 | } |
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208 | |
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209 | } |
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210 | |
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211 | |
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212 | if (!empty($params['assign'])) { |
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213 | $smarty->assign($params['assign'],$content); |
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214 | } else { |
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215 | return $content; |
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216 | } |
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217 | } |
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218 | |
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219 | /* vim: set expandtab: */ |
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220 | |
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221 | ?> |
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