X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=mod%2Fphoto.php;h=2f8d180fdb9c60c1824bb84858d3068515f0ecda;hb=8c245a5d2f4e6882211ac17561f86537a7089c73;hp=bd0e415bfaa36f6fd4a26053e80e25455318d214;hpb=6348e70daa113e8b3203de8fbc919d08c90d972e;p=friendica.git

diff --git a/mod/photo.php b/mod/photo.php
index bd0e415bfa..2f8d180fdb 100644
--- a/mod/photo.php
+++ b/mod/photo.php
@@ -2,24 +2,140 @@
 
 function photo_init(&$a) {
 
-	if($a->argc != 2) {
-		killme();
+	switch($a->argc) {
+		case 3:
+			$person = $a->argv[2];
+			$type = $a->argv[1];
+			break;
+		case 2:
+			$photo = $a->argv[1];
+			break;
+		case 1:
+		default:
+			killme();
+			// NOTREACHED
 	}
-	$resolution = 0;
-	$photo = $a->argv[1];
-	$photo = str_replace('.jpg','',$photo);
-	if(substr($photo,-2,1) == '-') {
-		$resolution = intval(substr($photo,-1,1));
-		$photo = substr($photo,0,-2);
+
+	$default = 'images/default-profile.jpg';
+
+	if(isset($type)) {
+		switch($type) {
+
+			case 'profile':
+				$resolution = 4;
+				break;
+			case 'micro':
+				$resolution = 6;
+				$default = 'images/default-profile-mm.jpg';
+				break;
+			case 'avatar':
+			default:
+				$resolution = 5;
+				$default = 'images/default-profile-sm.jpg';
+				break;
+		}
+
+		$uid = str_replace('.jpg', '', $person);
+
+		$r = q("SELECT * FROM `photo` WHERE `scale` = %d AND `uid` = %d AND `profile` = 1 LIMIT 1",
+			intval($resolution),
+			intval($uid)
+		);
+		if(count($r)) {
+			$data = $r[0]['data'];
+		}
+		if(! isset($data)) {
+			$data = file_get_contents($default);
+		}
+	}
+	else {
+
+		$resolution = 0;
+		$photo = str_replace('.jpg','',$photo);
+	
+		if(substr($photo,-2,1) == '-') {
+			$resolution = intval(substr($photo,-1,1));
+			$photo = substr($photo,0,-2);
+		}
+
+		$r = q("SELECT `uid` FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
+			dbesc($photo),
+			intval($resolution)
+		);
+		if(count($r)) {
+			
+			$owner = $r[0]['uid'];
+
+			$sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
+
+			if(local_user() && ($owner == $_SESSION['uid'])) {
+
+				// Owner can always see his/her photos
+				$sql_extra = ''; 
+
+			}
+			elseif(remote_user()) {
+
+				// authenticated visitor - here lie dragons
+
+				$groups = init_groups_visitor($_SESSION['visitor_id']);
+				$gs = '<<>>'; // should be impossible to match
+				if(count($groups)) {
+					foreach($groups as $g)
+						$gs .= '|<' . intval($g) . '>';
+				} 
+
+				$sql_extra = sprintf(
+					" AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' ) 
+					  AND ( `deny_cid`  = '' OR  NOT `deny_cid` REGEXP '<%d>' ) 
+					  AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
+					  AND ( `deny_gid`  = '' OR NOT `deny_gid` REGEXP '%s') ",
+
+					intval($_SESSION['visitor_id']),
+					intval($_SESSION['visitor_id']),
+					dbesc($gs),
+					dbesc($gs)
+				);
+			}
+
+			// Now we'll see if we can access the photo
+
+			$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d $sql_extra LIMIT 1",
+				dbesc($photo),
+				intval($resolution)
+			);
+
+			if(count($r)) {
+				$data = $r[0]['data'];
+			}
+			else {
+
+				// Does the picture exist? It may be a remote person with no credentials,
+				// but who should otherwise be able to view it. Show a default image to let 
+				// them know permissions was denied. It may be possible to view the image 
+				// through an authenticated profile visit.
+				// There won't be many complete unauthorised people seeing this because
+				// they won't have the photo link, so there's a reasonable chance that the person
+				// might be able to obtain permission to view it.
+ 
+				$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s' AND `scale` = %d LIMIT 1",
+					dbesc($photo),
+					intval($resolution)
+				);
+				if(count($r)) {
+					$data = file_get_contents('images/nosign.jpg');
+				}
+			}
+		}
 	}
-	$r = q("SELECT * FROM `photo` WHERE `resource-id` = '%s'
-		AND `scale` = %d LIMIT 1",
-		dbesc($photo),
-		intval($resolution));
-	if($r === NULL || (! count($r))) {
+
+	if(! isset($data)) {
 		killme();
+		// NOTREACHED
 	}
-        header("Content-type: image/jpeg");
-        echo $r[0]['data'];
 
+	header("Content-type: image/jpeg");
+	echo $data;
+	killme();
+	// NOTREACHED
 }
\ No newline at end of file