add oembed provider for photos

boot.php

@@ -48,7 +48,7 @@ require_once('include/AccessList.php');
 
 define ( 'PLATFORM_NAME',           'hubzilla' );
 define ( 'RED_VERSION',             trim(file_get_contents('version.inc')));
-define ( 'STD_VERSION',             '1.1.3' );
+define ( 'STD_VERSION',             '1.1.4' );
 define ( 'ZOT_REVISION',            1     );
 
 define ( 'DB_UPDATE_VERSION',       1161  );

include/oembed.php

@@ -78,7 +78,6 @@ function oembed_fetch_url($embedurl){
 		else {
 			// try oembed autodiscovery
 			$redirects = 0;
-
 			$result = z_fetch_url($embedurl, false, $redirects, array('timeout' => 15, 'accept_content' => "text/*", 'novalidate' => true ));
 			if($result['success'])
 				$html_text = $result['body'];
@@ -88,8 +87,8 @@ function oembed_fetch_url($embedurl){
 				if ($dom){
 					$xpath = new DOMXPath($dom);
 					$attr = "oembed";
-				
 					$xattr = oe_build_xpath("class","oembed");
+
 					$entries = $xpath->query("//link[@type='application/json+oembed']");
 					foreach($entries as $e){
 						$href = $e->getAttributeNode("href")->nodeValue;
@@ -173,6 +172,10 @@ function oembed_format_object($j){
 			$ret.="<br>";
 		}; break;  
 		case "link": {
+			if($j->thumbnail_url) {
+				$ret = '<a href="' . $embedurl . '" ><img src="' . $j->thumbnail_url . '" alt="thumbnail" /></a><br /><br />';
+			}
+
 			//$ret = "<a href='".$embedurl."'>".$j->title."</a>";
 		}; break;  
 		case "rich": {

include/security.php

@@ -181,7 +181,7 @@ function permissions_sql($owner_id, $remote_observer = null) {
 	 */
 
 	else {
-		$observer = (($remote_observer) ? $remote_observer : get_observer_hash());
+		$observer = ((! is_null($remote_observer)) ? $remote_observer : get_observer_hash());
 		if($observer) {
 			$groups = init_groups_visitor($observer);
 

index.php

@@ -289,9 +289,12 @@ if($a->module_loaded) {
 	 */
 
 	if(function_exists($a->module . '_init')) {
-		call_hooks($a->module . '_mod_init', $placeholder);
-		$func = $a->module . '_init';
-		$func($a);
+		$arr = array('init' => true, 'replace' => false);		
+		call_hooks($a->module . '_mod_init', $arr);
+		if(! $arr['replace']) {
+			$func = $a->module . '_init';
+			$func($a);
+		}
 	}
 
 	/**
@@ -333,7 +336,7 @@ if($a->module_loaded) {
 
 	if(($_SERVER['REQUEST_METHOD'] === 'POST') && (! $a->error)
 		&& (function_exists($a->module . '_post'))
-		&& (! x($_POST, 'auth-params'))) {
+		&& (! x($_POST, 'auth-params'))) {		
 		call_hooks($a->module . '_mod_post', $_POST);
 		$func = $a->module . '_post';
 		$func($a);

mod/oep.php

@@ -0,0 +1,93 @@
+<?php
+
+// oembed provider
+
+
+
+function oep_init(&$a) {
+
+
+
+	$url = $_REQUEST['url'];
+	if(! $url)
+		http_status_exit(404, 'Not found');
+
+	$maxwidth  = $_REQUEST['maxwidth'];
+	$maxheight = $_REQUEST['maxheight'];
+	$format = $_REQUEST['format'];
+	if($format && $format !== 'json')
+		http_status_exit(501, 'Not implemented');
+
+	if(fnmatch('*/photos/*/album/*',$url))
+		$arr = oep_album_reply($_REQUEST);
+	elseif(fnmatch('*/photos/*',$url))
+		$arr = oep_photo_reply($_REQUEST);
+
+
+	if($arr) {
+		header('Content-Type: application/json+oembed');
+		echo json_encode($arr);
+		killme();
+	}
+
+	http_status_exit(404,'Not found');
+
+}
+
+
+function oep_album_reply() {
+
+}
+
+function oep_photo_reply($args) {
+
+	$ret = array();
+	$url = $args['url'];
+	$maxwidth  = intval($args['maxwidth']);
+	$maxheight = intval($args['maxheight']);
+
+	if(preg_match('|//(.*?)/(.*?)/(.*?)/image/|',$url,$matches)) {
+		$chn = $matches[3];
+		$res = basename($url);
+	}
+
+	if(! ($chn && $res))
+		return;
+	$c = q("select * from channel where channel_address = '%s' limit 1",
+		dbesc($chn)
+	);
+
+	if(! $c)
+		return;
+
+	$sql_extra = permissions_sql($c[0]['channel_id']);
+
+
+	$r = q("select height, width, scale, resource_id from photo where uid = %d and resource_id = '%s' $sql_extra order by scale asc",
+		intval($c[0]['channel_id']),
+		dbesc($res)
+	);
+
+	if($r) {
+		foreach($r as $rr) {
+			$foundres = false;
+			if($maxheight && $rr['height'] > $maxheight)
+				continue;
+			if($maxwidth && $rr['width'] > $maxwidth)
+				continue;
+			$foundres = true;			
+			break;
+		}
+
+		if($foundres) {
+			$ret['type'] = 'link';
+			$ret['thumbnail_url'] = z_root() . '/photo/' . '/' . $rr['resource_id'] . '-' . $rr['scale'];
+			$ret['thumbnail_width'] = $rr['width'];
+			$ret['thumbnail_height'] = $rr['height'];
+		}
+			
+
+	}
+	return $ret;
+
+}

mod/photos.php

@@ -804,6 +804,8 @@ function photos_content(&$a) {
 
 	if($datatype === 'image') {
 
+		$a->page['htmlhead'] .= "\r\n" . '<link rel="alternate" type="application/json+oembed" href="' . z_root() . '/oep?f=&url=' . urlencode(z_root() . '/' . $a->cmd) . '" title="oembed" />' . "\r\n";
+
 		// fetch image, item containing image, then comments
 
 		$ph = q("SELECT id,aid,uid,xchan,resource_id,created,edited,title,`description`,album,filename,`type`,height,width,`size`,scale,photo_usage,is_nsfw,allow_cid,allow_gid,deny_cid,deny_gid FROM `photo` WHERE `uid` = %d AND `resource_id` = '%s' 

version.inc

@@ -1 +1 @@
-2016-01-29.1293H
+2016-01-31.1295H