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sender.php
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sender.php
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<?php
/* *****************************************************************************
* Copyright (C) 2015 Emmanuel Papin <manupap01@gmail.com>
*
* Authors: Emmanuel Papin <manupap01@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
* ****************************************************************************/
// Root directory
define('__ROOT__', dirname(__FILE__));
// Load configuration and required libraries
require_once(__ROOT__ . "/config.php");
require_once(__ROOT__ . "/default.php");
require_once(__ROOT__ . "/utils.php");
require_once(__ROOT__ . "/logger.php");
require_once(__PHPMAILER_ROOT__ . "/class.phpmailer.php");
// Some sanity checks
if (empty($argv[1]) || empty($argv[2])) {
write_log(translate("MissingArgument") . translate("commaExit"));
exit(1);
}
if (!is_bool($enable_notifications)) {
write_log("'$enable_notifications' " . translate("isNotAValidValueFor") .
" \$enable_notifications" . translate("commaExit"));
}
if (!is_int($max_plates) || ($max_plates < 1)) {
write_log("'$max_plates' " . translate("isNotAValidValueFor") .
" \$max_plates" . translate("commaExit"));
exit(1);
}
if (!is_bool($use_sendmail)) {
write_log("'$use_sendmail' " . translate("isNotAValidValueFor") .
" \$use_sendmail" . translate("commaExit"));
exit(1);
} elseif ($use_sendmail) {
if (!is_executable("/usr/sbin/sendmail")) {
write_log(translate("SendmailFileIsMissing") . translate("commaExit"));
exit(1);
}
} elseif (!$use_sendmail) {
require_once(__PHPMAILER_ROOT__ . "/class.smtp.php");
if (empty($smtp_hosts)) {
write_log("\$smtp_hosts " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
if (!is_int($smtp_port) || ($smtp_port < 1) || ($smtp_port > 65535)) {
write_log("'$smtp_port' " . translate("isNotAValidValueFor") .
" \$smtp_port" . translate("commaExit"));
exit(1);
}
if (!is_bool($smtp_auth)) {
write_log("'$smtp_auth' " . translate("isNotAValidValueFor") .
" \$smtp_auth" . translate("commaExit"));
exit(1);
} elseif ($smtp_auth) {
if (empty($smtp_username)) {
write_log("\$smtp_username " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
if (empty($smtp_password)) {
write_log("\$smtp_password " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
if (empty($smtp_sec_proto)) {
write_log("\$smtp_sec_proto " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
}
}
if (empty($sender_email)) {
write_log("\$sender_email " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
if (empty($sender_name)) {
write_log("\$sender_name " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
if (empty($recipient_email)) {
write_log("\$recipient_email " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
if (!is_int($max_det_duration) || ($max_det_duration < 0)) {
write_log("'$max_det_duration' " . translate("isNotAValidValueFor") .
" \$max_det_duration" . translate("commaExit"));
exit(1);
}
if (!is_int($no_det_duration) || ($no_det_duration < 0)) {
write_log("'$no_det_duration' " . translate("isNotAValidValueFor") .
" \$no_det_duration" . translate("commaExit"));
exit(1);
}
if (!is_bool($attach_image)) {
write_log("'$attach_image' " . translate("isNotAValidValueFor") .
" \$attach_image" . translate("commaExit"));
exit(1);
}
if (empty($memcached_host)) {
write_log("\$memcached_host " . translate("canNotBeAnEmptyString") .
translate("commaExit"));
exit(1);
}
if (!is_int($memcached_port) || ($memcached_port < 1)
|| ($memcached_port > 65535)) {
write_log("'$memcached_port' " . translate("isNotAValidValueFor") .
"\$memcached_port" . translate("commaExit"));
exit(1);
}
// Get openalpr-daemon (alprd) configuration
$alprd_config = parse_ini_file($alprd_config_file);
if ($alprd_config === false) {
write_log(translate("CanNotReadAlprdConfigFile") . translate("commaExit"));
exit(1);
}
// Log a message if user activated image attachment but alprd will not export
// images
if ($attach_image && !$alprd_config["store_plates"]) {
write_log(translate("ImageStorageDisabledInAlprd"));
$attach_image = false;
}
// Share variables between 'threads' with memcached
$memcache = new Memcached;
$memcache->addServer($memcached_host, $memcached_port);
if ($memcache->getVersion()["$memcached_host:$memcached_port"]
== "255.255.255") {
write_log(translate("MemCachedDown") . translate("commaExit"));
exit(1);
}
// Set memcached keys
$serial_plate_list = $argv[1] . "_plate_list";
$serial_last_det_time = $argv[1] . "_last_det_time";
$serial_stop = $argv[1] . "_stop";
// Create a PHPMailer instance
$mail = new PHPMailer;
$mail->CharSet = "UTF-8";
if ($use_sendmail) {
$mail->isSendmail();
} else {
$mail->isSMTP();
$mail->Host = $smtp_hosts;
$mail->SMTPAuth = $smtp_auth;
$mail->Username = $smtp_username;
$mail->Password = $smtp_password;
$mail->SMTPSecure = $smtp_sec_proto;
$mail->Port = $smtp_port;
}
$mail->setFrom($sender_email, $sender_name);
if (empty($recipient_name)) {
$mail->addAddress($recipient_email);
} else {
$mail->addAddress($recipient_email, $recipient_name);
}
$mail->Subject = translate("MailSubjectPlateDetected");
// Set some default values
$stop = false;
$det_running = false;
$exit_code = 1;
// Sender 'thread'
while(true) {
// Intercept stop signal and do a final loop to flush results
if (($stop == false) && $memcache->get($serial_stop)) {
write_log(translate("StopSignalReceived"));
$stop = true;
continue;
}
if (($stop == false) && isset($first_det_time) &&
((time() - $first_det_time) > $max_det_duration)) {
// Force notification if we exceed the maximum detection duration
write_log(translate("MaxDetDurationExceeded"));
} else {
// Get the last detection time
$last_det_time = $memcache->get($serial_last_det_time);
if ($memcache->getResultCode() == Memcached::RES_NOTFOUND) {
if ($stop == true) {
// Stop signal received, nothing to flush, exit loop now
write_log(translate("TerminatingSenderThread"));
break;
} else {
// Proceed next loop while no plate is detected
// Do not monopolize the CPU more than necessary
sleep(1);
continue;
}
} else {
// Set the time of the first detection since last notification
if (!$det_running) {
$det_running = true;
$first_det_time = $last_det_time;
}
}
if ($stop == false) {
// Skip the loop if we do not exceed the non detection delay
if ((time() - $last_det_time) < $no_det_duration) {
// Do not monopolize the CPU more than necessary
sleep(1);
continue;
} else {
write_log(translate("NoDetDurationExceeded"));
}
}
}
// Reinitialize variables for next detection
$det_running = false;
unset($first_det_time);
// Get the plate list
$plate_list = $memcache->get($serial_plate_list);
if ($memcache->getResultCode() != Memcached::RES_SUCCESS) {
// Send a kill command to the main 'thread' in case of cached memory
// error
write_log(translate("UnexpectedErrorwithMem") .
translate("commaExit"));
posix_kill($argv[2], SIGINT);
// Exit loop now. The main 'thread' can not do it because of cached
// memory error
break;
}
// Sort the plate list by confidence level descending order
$plate_list = sort_array($plate_list, 'conf');
// Get the plate with the highest confidence
reset($plate_list);
$first_plate = current($plate_list);
// Set email body with plate numbers
$mail->Body = translate("VehiclesEnteredYourProperty") . "\n\n" .
translate("DetectedPlate") . " " . $first_plate['num'] . "\n\n" .
translate("CandidatesConfidence") . "\n";
$nb_plates = 0;
foreach ($plate_list as $plate) {
$nb_plates++;
if ($nb_plates > $max_plates) {
break;
}
$mail->Body .= "- " . $plate['num'] . " (" . $plate['conf'] . ")\n";
}
// Add image with the highest confidence to the email if required
if ($attach_image) {
$mail->Body .= "\n" . translate("PictureIsAttached") . "\n";
$mail->clearAttachments();
$mail->addAttachment($alprd_config["store_plates_location"] . "/" .
$first_plate['uuid'] . ".jpg");
}
// Send the email
write_log(translate("SendEmailWithPlates"));
if (!$mail->send()) {
write_log(translate("MessageNotSent") . " (" . $mail->ErrorInfo . ")");
}
// We have flushed the result, reset variables in cached memory
$memcache->delete($serial_last_det_time);
$plate_list = array();
$memcache->replace($serial_plate_list, $plate_list, 0);
// The last loop is finished, we can exit now
if ($stop == true) {
write_log(translate("TerminatingSenderThread"));
$exit_code = 0;
break;
}
}
exit($exit_code);
?>