diff --git a/gemini.class.php b/gemini.class.php
index 8b4fdf3..a6c5fdb 100644
--- a/gemini.class.php
+++ b/gemini.class.php
@@ -5,9 +5,36 @@ ob_implicit_flush();
 
 class Gemini {
 
-	function __construct() {
+	function __construct($config) {
+		if(empty($config['certificate_file']))
+			die("Missing certificate file.  Edit config.php");
+		$this->ip = "0";
+		$this->port = "1965";
 		$this->data_dir = "hosts/";
 		$this->default_host_dir = "default/";
+		$this->default_index_file = "index.gemini";
+		$this->logging = 1;
+		$this->log_file = "logs/gemini-php.log";
+		$this->log_sep = "\t";
+		$settings = array('ip', 'port', 'data_dir', 'default_host_dir', 'default_index_file',
+				'certificate_file', 'certificate_passphrase');
+		foreach($settings as $setting_key) {
+			if(!empty($config[$setting_key]))
+				$this->$setting_key = $config[$setting_key];
+		}
+		// append the required filepath slashes if they're missing
+		if(substr($this->data_dir, -1) != "/")
+			$this->data_dir .= "/";
+		if(substr($this->default_host_dir, -1) != "/")
+			$this->default_host_dir .= "/";
+		if($this->logging) {
+			if(!file_exists($this->log_file)) {
+				$this->log_to_file("New log file created");
+			}
+			if(!is_writable($this->log_file)) {
+				die("{$this->log_file} is not writable.");
+			}
+		}
 	}
 
 	function parse_request($request) {
@@ -20,9 +47,6 @@ class Gemini {
 		return $dirs;
 	}
 
-	function get_dir($parsed_url) {
-	}
-	
 	function get_host_url($host) {
 		if(empty($host))
 			return 'default';
@@ -38,7 +62,13 @@ class Gemini {
 	}
 
 	function get_mime_type($filepath) {
-		return "text/gemini";	
+		$type = mime_content_type($filepath);
+		// we need a way to detect gemini file types, which PHP doesn't
+		// so.. if it ends with gemini (or if it has no extension), assume
+		$path_parts = pathinfo($filepath);
+		if(empty($path_parts['extension']) or $path_parts['extension'] == "gemini")
+			$type = "text/gemini";
+		return $type;
 	}
 
 	/**
@@ -66,9 +96,19 @@ class Gemini {
 		// Kristall Browser is adding "__" to the end of the filenames
 		// wtf am I missing?
 		$url['path'] = str_replace("__", "", $url['path']);
+		if($url['path'] == "" or $url['path'] == "/")
+			$url['path'] = "/".$this->default_index_file;
 
 		return $this->data_dir.$hostname.$url['path'];
 	}
+
+	function log_to_file($ip, $status_code, $meta, $filepath, $filesize) {
+		$ts = date("Y-m-d H:i:s", strtotime('now'));
+		$this->log_sep;
+		$str = $ts.$this->log_sep.$ip.$this->log_sep.$status_code.$this->log_sep.
+		$meta.$this->log_sep.$filepath.$this->log_sep.$filesize."\n";
+		file_put_contents($this->log_file, $str, FILE_APPEND);
+	}
 }
 
 ?>