mirror of
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232 lines
7.1 KiB
PHP
232 lines
7.1 KiB
PHP
<?php
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/*
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* Copyright 2005-2013 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* Index messages for closed threads
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*
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* History and serarch works only for indexed messages.
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*
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* Trigger 'pluginMessageIndex' event. Plugins can use this event to
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* index their own messages.
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*
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* Event listener receives as argument an associative array with following keys:
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* - 'message': associative array with message data;
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* - 'result': array of indexed message data. Default value is boolean false.
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*
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* The 'message' element contains following keys:
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* - 'plugin': string, name of the plugin which sent the message;
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* - 'data': array, data sent by the plugin.
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*
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* Plugin can use the 'result' element to return indexed message data. By default it
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* equals to boolean false. To index message plugin should set this element to
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* an associative array with following keys:
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* - 'kind': int, indexed message kind. It must be one of the core messages
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* kinds, not Thread::KIND_PLUGIN.
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* - 'message': string, text of indexed message.
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* - 'sender_name': string, name of person who sent the message. This field is
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* arbitrary and do not use for some messages kinds.
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* - 'operator_id': int, ID of the operator who send the message. This field is
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* arbitrary and do not use for some messages kinds.
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*
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* If the 'result' element equals to boolean false message will be skipped.
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*
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* Example of event listener is listed below:
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* <code>
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* public function pluginMessageIndexListener(&$args) {
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* // Create shortcut for stored data
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* $data = $args['message']['data'];
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* // Check if message was sent by current plugin
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* if ($args['message']['plugin'] == 'example') {
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* $args['result'] = array(
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* // Plugin should set one of the core message kinds to indexed message
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* 'kind' => Thread::KIND_INFO,
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* // Plugin should set arbitrary text for indexed message
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* 'message' => $data['title'] . ': ' . $data['body']
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* );
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* }
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* }
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* </code>
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*/
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function cron_index_messages() {
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$db = Database::getInstance();
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$db_throw_exceptions = $db->throwExeptions(true);
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try {
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// Start transaction
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$db->query('START TRANSACTION');
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// Select messages from closed threads
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$messages = $db->query(
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"SELECT {chatmessage}.* FROM {chatmessage}, {chatthread} " .
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"WHERE {chatmessage}.threadid = {chatthread}.threadid AND " .
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"({chatthread}.istate = :closed OR {chatthread}.istate = :left)",
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array(
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':closed' => Thread::STATE_CLOSED,
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':left' => Thread::STATE_LEFT
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),
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array('return_rows' => Database::RETURN_ALL_ROWS)
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);
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// Prevent race condition. Remove only moved to {indexedchatmessage}
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// messages. Get last loaded message ID for that.
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$last_id = 0;
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$dispatcher = EventDispatcher::getInstance();
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foreach($messages as $key => $message) {
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// Find last message ID
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if ($message['messageid'] > $last_id) {
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$last_id = $message['messageid'];
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}
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// Leave core messages kind as is
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if ($message['ikind'] != Thread::KIND_PLUGIN) {
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continue;
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}
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// Provide an ability for plugins to index own messages
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$event_args = array(
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'message' => unserialize($message['tmessage']),
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'result' => false
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);
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$dispatcher->triggerEvent('pluginMessageIndex', $event_args);
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// Check if message was processed by a plugin correctly
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$update_message = true;
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if (empty($event_args['result']['message'])) {
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$update_message = false;
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}
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// Check if kind set and correct
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if (empty($event_args['result']['kind'])
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|| $event_args['result']['kind'] == Thread::KIND_PLUGIN) {
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$update_message = false;
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}
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// Check if message should be updated
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if (! $update_message) {
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unset($messages[$key]);
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continue;
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}
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// Update message
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$messages[$key]['ikind'] = $event_args['result']['kind'];
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$messages[$key]['tmessage'] = $event_args['result']['message'];
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if (array_key_exists('sender_name', $event_args['result'])) {
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$messages[$key]['tname'] = $event_args['result']['sender_name'];
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}
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if (array_key_exists('operator_id', $event_args['result'])) {
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$messages[$key]['agentId'] = $event_args['result']['operator_id'];
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}
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}
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// Check is there some messages that should be saved
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if (count($messages) != 0) {
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// Reindex messages array
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$messages = array_values($messages);
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// Prepare SQL query template
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$message_fields = array_keys($messages[0]);
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$placeholders = '(' .
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implode(', ', array_fill(0, count($message_fields), '?')) . ')';
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$sql_template = 'INSERT INTO {indexedchatmessage} (' .
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implode(', ', $message_fields) . ') VALUES ';
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// Insert indexed messages into database by $block_size messages per
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// sql query
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$block_size = 20;
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$iteration_count = ceil(count($messages) / $block_size);
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for($i = 0; $i < $iteration_count; $i++) {
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// Get messages block
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$messages_block = array_slice(
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$messages,
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$i * $block_size,
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$block_size
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);
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// Count of $messages_block can be less than $block_size for
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// the last block of messages.
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$real_block_size = count($messages_block);
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// Build array of inserted values
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$fields_to_insert = array();
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foreach($messages_block as $message) {
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foreach($message_fields as $field_name) {
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$fields_to_insert[] = $message[$field_name];
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}
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}
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// Build query
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$sql = $sql_template . implode(
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', ',
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array_fill(0, $real_block_size, $placeholders)
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);
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// Run query
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$db->query($sql, $fields_to_insert);
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}
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}
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// Check is there some processed messages that should be deleted
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if ($last_id != 0) {
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// Delete indexed messages
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$db->query(
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'DELETE FROM {chatmessage} where messageid <= :last_id',
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array(':last_id' => $last_id)
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);
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}
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} catch (Exception $e) {
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// Something went wrong: warn and rollback transaction.
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trigger_error(
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'Messages indexing faild: ' . $e->getMessage(),
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E_USER_WARNING
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);
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$db->query('ROLLBACK');
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// Set throw exceptions back
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$db->throwExeptions($db_throw_exceptions);
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return;
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}
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// Commit transaction
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$db->query('COMMIT');
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// Set throw exceptions back
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$db->throwExeptions($db_throw_exceptions);
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}
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/**
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* Generates cron URI
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*
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* @global string $webimroot Path of the mibew instalation from server root.
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* It defined in libs/config.php
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* @param string $cron_key Cron security key
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* @return string Cron URI
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*/
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function cron_get_uri($cron_key) {
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global $webimroot;
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$path = (empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] == 'off')
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? 'http://'
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: 'https://';
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$path .= $_SERVER['SERVER_NAME'] . $webimroot . '/cron.php';
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$path .= empty($cron_key)
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? ''
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: '?cron_key='.$cron_key;
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return $path;
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}
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?>
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