Mostly working

sms.php

@@ -4,6 +4,7 @@
 	define('PARAMS', array('to', 'from', 'body', 'is_mms'));
 	define('PARAMS_MMS', array('url', 'file_name', 'mime_type', 'file_size'));
 	define('DEFAULT_NUM', '8002221222');
+	define('MAX_ATTACHMENT_SIZE', 25*(1024*1024));
 
 	debug_log('INIT');
 	use PHPMailer\PHPMailer\PHPMailer;
@@ -13,16 +14,19 @@
 	require_once 'PHPMailer/src/SMTP.php';
 
 	debug_log('READ');
-	$data = @file_get_contents('php://input');
-	if (!$data) {
+	$raw = @file_get_contents('php://input');
+	if (!$raw) {
 		fail('READ');
 	}
 
 	debug_log('JSON');
-	$data = @json_decode($data);
+	$data = @json_decode($raw);
 	if (!$data || !is_object($data)) {
 		fail('JSON');
 	}
+	if (!DEBUG) {
+		unset($raw);
+	}
 
 	debug_log('FIND');
 	if (!property_exists($data, 'data') || !is_object($data->{'data'}) || 
@@ -44,9 +48,11 @@
 		$sms[$param] = $msg->{$param};
 	}
 	unset($msg);
+	cleanNum($sms, 'to');
+	cleanNum($sms, 'from');
 
+	debug_log('FIND_MMS');
 	if ($sms['is_mms']) {
-		debug_log('FIND_MMS');
 		if (!property_exists($data, 'included') || !is_array($data->{'included'})) {
 			fail('FIND_MMS');
 		}
@@ -71,38 +77,54 @@
 			unset($msg);
 		}
 	}
-
-	debug_log('CLEANUP');
-	if (preg_match('/\d*(\d{10})\D*$/', $sms['from'], $matches)) {
-		$sms['from'] = $matches[1];
-	} else {
-		$sms['from'] = DEFAULT_NUM;
-	}
-	if (preg_match('/\d*(\d{10})\D*$/', $sms['to'], $matches)) {
-		$sms['to'] = $matches[1];
-	} else {
-		$sms['to'] = DEFAULT_NUM;
+	if (!DEBUG) {
+		unset($data);
 	}
-	unset($matches);
 
 	debug_log('MAIL');
 	$mail = new PHPMailer();
 	if (DEBUG) {
 		$mail->SMTPDebug = 2;
 	}
-	$mail->setFrom($sms['from'] . '@' . FROM_DOMAIN, 'SMS ' . $sms['from']);
+	$mail->setFrom($sms['from'] . '@' . FROM_DOMAIN, 'SMS ' . $sms['from_pretty']);
 	$mail->addAddress(TO_ADDR, TO_NAME);
-	$mail->Subject = 'SMS Message ' . $sms['to'] . ' => ' . $sms['from'];
+	$mail->Subject = 'SMS Message ' . $sms['from_pretty'] . ' => ' . $sms['to_pretty'];
 	$mail->Body = $sms['body'];
+	$files = array();
 	foreach ($sms['media'] as $file) {
-		$mail->Body .= "\n\n" . $file['file_name'] . '(' . $file['mime_type'] . '): ' . $file['url'] . "\n";
+		debug_log('MEDIA');
+		if ($file['file_size'] < 1 || $file['file_size'] > MAX_ATTACHMENT_SIZE) {
+			debug_log('FILE SIZE: ' . $file['file_size']);
+			$mail->Body .= "\nWill not fetch " .
+				'(' . $file['file_size'] . '/' . MAX_ATTACHMENT_SIZE . '): ' .
+				$file['url'] . "\n";
+			continue;
+		}
+		$path = download($file['url']);
+		if (!$path) {
+			debug_log('DOWNLOAD FAILED: ' . $file['url']);
+			$mail->Body .= "\nCould not fetch: " . $file['url'] . "\n";
+			continue;
+		}
+		debug_log('ADDING: ' . $path);
+		$files[] = $path;
+		$mail->addAttachment($path, $file['file_name'], 'base64', $file['mime_type'], 'attachment');
 	}
 	if (!$mail->send()) {
 		debug_log('Mail error: ' . $mail->ErrorInfo);
 		fail('MAIL');
 	}
+	foreach ($files as $path) {
+		debug_log('REMOVING: ' . $path);
+		@unlink($path);
+	}
 	unset($mail);
 
+	debug_log('CLEANUP');
+	if (!DEBUG) {
+		unset($sms);
+	}
+
 	if (DEBUG) {
 		debug_log('DEBUG');
 		debug_log(print_r($sms, true));
@@ -113,14 +135,53 @@
 		}
 		debug_log('File: ' . $file);
 
-		if (!@file_put_contents($file . '.raw', print_r($data, true))) {
+		if (!@file_put_contents($file . '.raw', print_r($raw, true))) {
 			fail('STORE_RAW');
 		}
+		if (!@file_put_contents($file . '.decoded', print_r($data, true))) {
+			fail('STORE_DECODED');
+		}
 		if (!@file_put_contents($file, print_r($sms, true))) {
 			fail('STORE_PARSED');
 		}
 	}
 
+	function cleanNum(&$sms, $field) {
+		if (preg_match('/\d*(\d{3})(\d{3})(\d{4})\D*$/', $sms[$field], $matches)) {
+			$sms[$field] = $matches[1] . $matches[2] . $matches[3];
+			$sms[$field . '_pretty'] = '(' . $matches[1] . ') ' . $matches[2] . '-' . $matches[3];
+		} else {
+			debug_log($field . ' number format error: ' . $sms[$field]);
+			$sms[$field] = DEFAULT_NUM;
+		}
+	}
+
+	function download($url) {
+		$file = @tempnam(sys_get_temp_dir(), 'SMS_media.');
+		if (!$file) {
+			return false;
+		}
+		$fp = @fopen($file, 'w+');
+		if (!$fp) {
+			return false;
+		}
+	
+		$ch = curl_init($url);
+		curl_setopt($ch, CURLOPT_FILE, $fp);
+		curl_setopt($ch, CURLOPT_SSLVERSION, 'CURL_SSLVERSION_MAX_DEFAULT');
+		curl_exec($ch);
+		$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+		curl_close($ch);
+		fclose($fp);
+
+		if ($code == 200) {
+			return $file;
+		} else {
+			unlink($file);
+			return false;
+		}
+	}
+
 	function fail($msg = 'Unknown error', $code = 500) {
 		http_response_code($code);
 		echo 'Unable to process request: ' . $msg . "\n";