Automatically download library.zip when missed

cms/include/common.php

@@ -27,7 +27,8 @@ function curl_reset(&$ch){
 
 if (!file_exists(DOCROOT.LIBRARY_PATH)) {
 
-	echo 'Download and unpack <a href="http://cetera.ru/cetera_cms/library.zip">http://cetera.ru/cetera_cms/library.zip</a> at your webserver home folder.';
+	echo 'Download and unpack <a href="http://cetera.ru/cetera_cms/library.zip">http://cetera.ru/cetera_cms/library.zip</a> at your webserver home folder. ';
+	echo '<a href="/cms/library_install.php">Click to automatic install</a>';
 	die();
 
 }

cms/library_install.php

@@ -0,0 +1,58 @@
+<?
+require_once(__DIR__.'/include/constants.php');
+
+if (file_exists(DOCROOT.LIBRARY_PATH)) {
+	header('Location: /cms/');
+	die();
+}
+
+try {
+	echo 'Trying to download '.LIBRARY_FILE.' ... ';
+	download_file(LIBRARY_FILE);
+	echo 'OK<br>';
+
+	echo 'Extracting archive ... ';
+	$zip = new \ZipArchive;
+	$zip->open(LIBRARY_FILE);
+	$zip->extractTo(DOCROOT);
+	unlink(LIBRARY_FILE);
+	echo 'OK<br>';	
+
+	echo 'Redirect to backoffice ... ';
+	header('Location: /cms/');
+	die();
+
+} catch (\Exception $e) {
+	print 'FAIL.<br>';	
+	print $e->getMessage();
+}
+
+function download_file($file, $local = false) {
+    if (!$local) $local = $file;
+
+	$d = curl_get(DISTRIB_HOST.$file);
+	if (!$d) return false;
+	file_put_contents($local, $d);
+	return true;
+
+}
+
+function curl_get($url) {   
+    $defaults = array(
+        CURLOPT_URL => $url,
+		CURLOPT_SSL_VERIFYHOST => 0,
+		CURLOPT_SSL_VERIFYPEER => 0,
+        //CURLOPT_HEADER => 0,
+        CURLOPT_RETURNTRANSFER => TRUE,
+        //CURLOPT_TIMEOUT => 4
+    );
+
+    $ch = curl_init();
+    curl_setopt_array($ch, $defaults);
+    if( ! $result = curl_exec($ch))
+    {
+        trigger_error(curl_error($ch));
+    }
+    curl_close($ch);
+    return $result;
+}