library/smarty/libs/plugins/function.fetch.php
author Markus Bröker <broeker.markus@googlemail.com>
Fri, 13 Nov 2015 22:13:11 +0100
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Datenbank ist jetzt frei konfigurierbar
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<?php
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/**
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 * Smarty plugin
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 *
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 * @package    Smarty
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 * @subpackage PluginsFunction
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 */
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/**
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 * Smarty {fetch} plugin
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 * Type:     function<br>
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 * Name:     fetch<br>
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 * Purpose:  fetch file, web or ftp data and display results
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 *
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 * @link   http://www.smarty.net/manual/en/language.function.fetch.php {fetch}
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 *         (Smarty online manual)
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 * @author Monte Ohrt <monte at ohrt dot com>
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 *
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 * @param array $params parameters
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 * @param Smarty_Internal_Template $template template object
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 *
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 * @throws SmartyException
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 * @return string|null if the assign parameter is passed, Smarty assigns the result to a template variable
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 */
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function smarty_function_fetch($params, $template) {
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    if (empty($params['file'])) {
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        trigger_error("[plugin] fetch parameter 'file' cannot be empty", E_USER_NOTICE);
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        return;
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    }
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    // strip file protocol
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    if (stripos($params['file'], 'file://') === 0) {
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        $params['file'] = substr($params['file'], 7);
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    }
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    $protocol = strpos($params['file'], '://');
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    if ($protocol !== false) {
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        $protocol = strtolower(substr($params['file'], 0, $protocol));
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    }
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    if (isset($template->smarty->security_policy)) {
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        if ($protocol) {
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            // remote resource (or php stream, …)
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            if (!$template->smarty->security_policy->isTrustedUri($params['file'])) {
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                return;
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            }
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        } else {
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            // local file
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            if (!$template->smarty->security_policy->isTrustedResourceDir($params['file'])) {
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                return;
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            }
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        }
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    }
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    $content = '';
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    if ($protocol == 'http') {
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        // http fetch
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        if ($uri_parts = parse_url($params['file'])) {
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            // set defaults
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            $host = $server_name = $uri_parts['host'];
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            $timeout = 30;
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            $accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*";
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            $agent = "Smarty Template Engine " . Smarty::SMARTY_VERSION;
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            $referer = "";
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            $uri = !empty($uri_parts['path']) ? $uri_parts['path'] : '/';
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            $uri .= !empty($uri_parts['query']) ? '?' . $uri_parts['query'] : '';
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            $_is_proxy = false;
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            if (empty($uri_parts['port'])) {
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                $port = 80;
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            } else {
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                $port = $uri_parts['port'];
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            }
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            if (!empty($uri_parts['user'])) {
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                $user = $uri_parts['user'];
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            }
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            if (!empty($uri_parts['pass'])) {
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                $pass = $uri_parts['pass'];
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            }
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            // loop through parameters, setup headers
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            foreach ($params as $param_key => $param_value) {
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                switch ($param_key) {
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                    case "file":
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                    case "assign":
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                    case "assign_headers":
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                        break;
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                    case "user":
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                        if (!empty($param_value)) {
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                            $user = $param_value;
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                        }
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                        break;
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                    case "pass":
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                        if (!empty($param_value)) {
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                            $pass = $param_value;
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                        }
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                        break;
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                    case "accept":
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                        if (!empty($param_value)) {
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                            $accept = $param_value;
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                        }
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                        break;
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                    case "header":
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                        if (!empty($param_value)) {
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                            if (!preg_match('![\w\d-]+: .+!', $param_value)) {
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                                trigger_error("[plugin] invalid header format '" . $param_value . "'", E_USER_NOTICE);
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                                return;
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                            } else {
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                                $extra_headers[] = $param_value;
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                            }
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                        }
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                        break;
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                    case "proxy_host":
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                        if (!empty($param_value)) {
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                            $proxy_host = $param_value;
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                        }
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                        break;
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                    case "proxy_port":
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                        if (!preg_match('!\D!', $param_value)) {
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                            $proxy_port = (int)$param_value;
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                        } else {
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                            trigger_error("[plugin] invalid value for attribute '" . $param_key . "'", E_USER_NOTICE);
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                            return;
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                        }
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                        break;
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                    case "agent":
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                        if (!empty($param_value)) {
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                            $agent = $param_value;
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                        }
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                        break;
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                    case "referer":
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                        if (!empty($param_value)) {
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                            $referer = $param_value;
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                        }
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                        break;
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                    case "timeout":
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parents:
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   138
                        if (!preg_match('!\D!', $param_value)) {
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   139
                            $timeout = (int)$param_value;
4869aea77e21 Bröker-Framework BFW-1
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parents:
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   140
                        } else {
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parents:
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   141
                            trigger_error("[plugin] invalid value for attribute '" . $param_key . "'", E_USER_NOTICE);
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parents:
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   142
4869aea77e21 Bröker-Framework BFW-1
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parents:
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   143
                            return;
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parents:
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   144
                        }
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parents:
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   145
                        break;
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parents:
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   146
                    default:
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   147
                        trigger_error("[plugin] unrecognized attribute '" . $param_key . "'", E_USER_NOTICE);
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parents:
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   148
4869aea77e21 Bröker-Framework BFW-1
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parents:
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   149
                        return;
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parents:
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   150
                }
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parents:
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   151
            }
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parents:
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   152
            if (!empty($proxy_host) && !empty($proxy_port)) {
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Markus Bröker <broeker.markus@googlemail.com>
parents:
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   153
                $_is_proxy = true;
4869aea77e21 Bröker-Framework BFW-1
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parents:
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   154
                $fp = fsockopen($proxy_host, $proxy_port, $errno, $errstr, $timeout);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   155
            } else {
4869aea77e21 Bröker-Framework BFW-1
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parents:
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   156
                $fp = fsockopen($server_name, $port, $errno, $errstr, $timeout);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   157
            }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   158
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   159
            if (!$fp) {
4869aea77e21 Bröker-Framework BFW-1
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parents:
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   160
                trigger_error("[plugin] unable to fetch: $errstr ($errno)", E_USER_NOTICE);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   161
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   162
                return;
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   163
            } else {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   164
                if ($_is_proxy) {
4869aea77e21 Bröker-Framework BFW-1
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parents:
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   165
                    fputs($fp, 'GET ' . $params['file'] . " HTTP/1.0\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   166
                } else {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   167
                    fputs($fp, "GET $uri HTTP/1.0\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   168
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   169
                if (!empty($host)) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   170
                    fputs($fp, "Host: $host\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   171
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   172
                if (!empty($accept)) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   173
                    fputs($fp, "Accept: $accept\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   174
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   175
                if (!empty($agent)) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   176
                    fputs($fp, "User-Agent: $agent\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   177
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   178
                if (!empty($referer)) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   179
                    fputs($fp, "Referer: $referer\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   180
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   181
                if (isset($extra_headers) && is_array($extra_headers)) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   182
                    foreach ($extra_headers as $curr_header) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   183
                        fputs($fp, $curr_header . "\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   184
                    }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   185
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   186
                if (!empty($user) && !empty($pass)) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   187
                    fputs($fp, "Authorization: BASIC " . base64_encode("$user:$pass") . "\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   188
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   189
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   190
                fputs($fp, "\r\n");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   191
                while (!feof($fp)) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   192
                    $content .= fgets($fp, 4096);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   193
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   194
                fclose($fp);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   195
                $csplit = preg_split("!\r\n\r\n!", $content, 2);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   196
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   197
                $content = $csplit[1];
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   198
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   199
                if (!empty($params['assign_headers'])) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   200
                    $template->assign($params['assign_headers'], preg_split("!\r\n!", $csplit[0]));
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   201
                }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   202
            }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   203
        } else {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   204
            trigger_error("[plugin fetch] unable to parse URL, check syntax", E_USER_NOTICE);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   205
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   206
            return;
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   207
        }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   208
    } else {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   209
        $content = @file_get_contents($params['file']);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   210
        if ($content === false) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   211
            throw new SmartyException("{fetch} cannot read resource '" . $params['file'] . "'");
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   212
        }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   213
    }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   214
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   215
    if (!empty($params['assign'])) {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   216
        $template->assign($params['assign'], $content);
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   217
    } else {
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   218
        return $content;
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   219
    }
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   220
}