lib/Kolab

[Thomas Brüderli]

 lib/Kolab/FreeBusy/Source.php    |    3 ++-
 lib/Kolab/FreeBusy/SourceURL.php |   37 +++++++++++++++++++++++++++++++++++--
 2 files changed, 37 insertions(+), 3 deletions(-)

New commits:
commit 3e02b5d64da8869f308fd517429b40311a1f61d4
Author: Thomas Bruederli <bruederli at kolabsys.com>
Date:   Wed Jan 16 19:01:23 2013 +0100

    Implement fetching free/busy data from external URL

diff --git a/lib/Kolab/FreeBusy/Source.php b/lib/Kolab/FreeBusy/Source.php
index 1af5ba3..53c4d0f 100644
--- a/lib/Kolab/FreeBusy/Source.php
+++ b/lib/Kolab/FreeBusy/Source.php
@@ -17,11 +17,12 @@ abstract class Source
 	public static function factory($url)
 	{
 		$config = parse_url($url);
+		$config['url'] = $url;
 		switch ($config['scheme']) {
 			case 'file':	return new SourceFile($config);
 			case 'imap':	return new SourceIMAP($config);
 			case 'http':
-			case 'https':	return new SourceURL($url);
+			case 'https':	return new SourceURL($config);
 		}
 
 		trigger_error("Invalid source configuration: " . $url, E_USER_ERROR);
diff --git a/lib/Kolab/FreeBusy/SourceURL.php b/lib/Kolab/FreeBusy/SourceURL.php
index 1051dbf..d165bd5 100644
--- a/lib/Kolab/FreeBusy/SourceURL.php
+++ b/lib/Kolab/FreeBusy/SourceURL.php
@@ -3,7 +3,7 @@
 namespace Kolab\FreeBusy;
 
 /**
- *
+ * Implementation of a Free/Busy data source reading from remote URLs through HTTP
  */
 class SourceURL extends Source
 {
@@ -14,6 +14,39 @@ class SourceURL extends Source
 	{
 		$config = $this->getUserConfig($user);
 
-		// TODO: implement this
+		// prepare HTTP stream context
+		$context = stream_context_create(array(
+			'http' => array(
+				'user_agent' => "Kolab Free-Busy Service/0.1.0",
+				'timeout'    => 10,
+			),
+		));
+
+		// set HTTP auth credentials
+		if (!empty($config['user'])) {
+			stream_context_set_option($context, array(
+				'http' => array(
+					'header'  => "Authorization: Basic " . base64_encode($config['user'] . ':' . $config['pass']) . "\r\n",
+				),
+			));
+			$config['url'] = self::getUrl($config);  // re-compose url without user:pass
+		}
+
+		// TODO: so some logging
+
+		return file_get_contents($config['url'], false, $context);
+	}
+
+	/**
+	 * Compose a full url from the given config (previously extracted with parse_url())
+	 */
+	private static function getUrl($config)
+	{
+		$scheme = isset($config['scheme']) ?       $config['scheme'] . '://' : ''; 
+		$host   = isset($config['host'])   ?       $config['host']  : ''; 
+		$port   = isset($config['port'])   ? ':' . $config['port']  : ''; 
+		$path   = isset($config['path'])   ?       $config['path']  : ''; 
+		$query  = isset($config['query'])  ? '?' . $config['query'] : ''; 
+		return $scheme . $host . $port . $path . $query;
 	}
 }