New and updated version of old code.

api/discoverScanners.php

@@ -0,0 +1,25 @@
+<?php
+
+function discoverScanners()
+{
+	$scannersList = shell_exec('sudo scanimage -f "%d|%v %m"');
+
+	if($scannersList != "")
+	{
+		session_start();
+		$_SESSION["ScannersList"][0] = explode('|', $scannersList);
+		return true;
+	}
+	else return false;
+}
+
+// TODO / DEBUG - Fix this function
+if(discoverScanners() === true) echo "OK";
+else echo "Failed";
+
+// TEST code
+// session_start();
+// $_SESSION["ScannersList"][0] = [ "xerox_mfp:libusb:003:010", "Samsung M2070" ];
+// echo "OK";
+
+?>

api/imageDownload.php

@@ -0,0 +1,26 @@
+<?php
+
+if (isset($_GET['filename']))
+{
+	require("../include/appConfig.php");
+
+	// Strip only file name form user string so he do not download system configs or whatnot
+	$file = $appConfig['imagesLocation'].basename($_GET['filename']);
+
+	if(!file_exists($file)) die('404 - File not found.');
+	else
+	{
+		// Set appropriate headers
+		header("Cache-Control: private");
+		header("Content-Description: File Transfer");
+		header("Content-Disposition: attachment; filename=".basename($_GET['filename']));
+		header("Content-Type: ".mime_content_type($file));
+		header("Content-Transfer-Encoding: binary");
+
+		// Read the file from disk
+		readfile($file);
+	}
+}
+else echo "404 - File name not found.";
+
+?>

api/rediscover.php

@@ -0,0 +1,9 @@
+<?php
+
+session_start();
+session_unset();
+session_destroy();
+header("Location: ../index.php");
+exit;
+
+?>

api/scan.php

@@ -0,0 +1,126 @@
+<?php
+require("../include/appConfig.php");
+session_start();
+
+////
+//
+/// Functions
+//
+////
+
+function generateRandomString($length = 10)
+{
+	$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
+	$charactersLength = strlen($characters);
+	$randomString = '';
+	for ($i = 0; $i < $length; $i++)
+	{
+		$randomString .= $characters[rand(0, $charactersLength - 1)];
+	}
+	return $randomString;
+}
+
+function checkInput()
+{
+	global $appConfig;
+	$checkOK = true;
+
+	if (isset($_GET['outputImageResolution']))
+	{
+		$found = false;
+		foreach ($appConfig['outputImageResolution'] as $item)
+		{
+			if($item[0] == $_GET['outputImageResolution']) $found = true;
+		}
+		if(!$found) $checkOK = false;
+	}
+	else $checkOK = false;
+
+	if (isset($_GET['outputImageColorDepth']))
+	{
+		$found = false;
+		foreach ($appConfig['outputImageColorDepth'] as $item)
+		{
+			if($item[0] == $_GET['outputImageColorDepth']) $found = true;
+		}
+		if(!$found) $checkOK = false;
+	}
+	else $checkOK = false;
+
+	if(isset($_GET['outputFileFormat']))
+	{
+		$found = false;
+		foreach ($appConfig['outputImageFormats'] as $item)
+		{
+			if($item[0] == $_GET['outputFileFormat']) $found = true;
+		}
+		if(!$found) $checkOK = false;
+	}
+	else $checkOK = false;
+
+	if (isset($_GET['inputPageSize']))
+	{
+		$found = false;
+		foreach ($appConfig['inputPageSizes'] as $item)
+		{
+			if($item[0] == $_GET['inputPageSize']) $found = true;
+		}
+		if(!$found) $checkOK = false;
+	}
+	else $checkOK = false;
+
+	if (isset($_GET['deviceID']))
+	{
+		$found = false;
+		foreach ($_SESSION['ScannersList'] as $item)
+		{
+			if($item[0] == $_GET['deviceID']) $found = true;
+		}
+		if(!$found) $checkOK = false;
+	}
+	else $checkOK = false;
+
+	return $checkOK;
+}
+
+function getNewFileName()
+{
+	return 'scan-'.date('Ymd').'-'.generateRandomString().'.'.$_GET['outputFileFormat'];
+}
+
+
+
+////
+//
+/// Logic
+//
+////
+
+if(checkInput() !== true)
+{
+	echo "400 - Bad request";
+	http_response_code(400);
+	exit;
+}
+//Generate file name for scanned image
+$filename = getNewFileName();
+
+$scanCommand = "sudo scanimage --device-name ".$_GET['deviceID']." --format ".$_GET['outputFileFormat']." --resolution ".$_GET['outputImageResolution']." --mode ".$_GET['outputImageColorDepth']." > ".$appConfig['imagesLocation'].$filename;
+
+
+////
+//
+/// Scanning start
+//
+////
+
+//Prepare directory for scanned image
+if(!is_dir($appConfig['imagesLocation'])) mkdir($appConfig['imagesLocation'], 777, true);
+
+//Scan image
+shell_exec($scanCommand);
+
+//Output scanned image name indicating that scanning finished
+echo $filename;
+
+?>