/framework/vendor/smarty2/lib/plugins/function.fetch.php

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