consolidate perrmisions sql, minor duepuntozero validation fixes

5 files changed, 22 insertions, 207 deletions

diff --git a/mod/attach.php b/mod/attach.php
index 3953d3aa1..ae6540201 100644
--- a/mod/attach.php
+++ b/mod/attach.php
@@ -1,5 +1,7 @@
 <?php
 
+require_once('include/security.php');
+
 function attach_init(&$a) {
 
 	if($a->argc != 2) {
@@ -9,6 +11,8 @@ function attach_init(&$a) {
 
 	$item_id = intval($a->argv[1]);
 
+	// Check for existence, which will also provide us the owner uid
+
 	$r = q("SELECT * FROM `attach` WHERE `id` = %d LIMIT 1",
 		intval($item_id)
 	);
@@ -17,39 +21,7 @@ function attach_init(&$a) {
 		return;
 	}
 
-	$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)
-		);
-	}
+	$sql_extra = permissions_sql($r[0]['uid']);
 
 	// Now we'll see if we can access the attachment
 
@@ -57,17 +29,14 @@ function attach_init(&$a) {
 		dbesc($item_id)
 	);
 
-	if(count($r)) {
-		$data = $r[0]['data'];
-	}
-	else {
+	if(! count($r)) {
 		notice( t('Permission denied.') . EOL);
 		return;
 	}
 
 	header('Content-type: ' . $r[0]['filetype']);
 	header('Content-disposition: attachment; filename=' . $r[0]['filename']);
-	echo $data;
+	echo $r[0]['data'];
 	killme();
 	// NOTREACHED
 }
\ No newline at end of file
diff --git a/mod/display.php b/mod/display.php
index fdb93e480..305a21825 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -59,42 +59,7 @@ function display_content(&$a) {
 	if(count($r))
 		$a->page_contact = $r[0];
 
-	$sql_extra = "
-		AND `allow_cid` = '' 
-		AND `allow_gid` = '' 
-		AND `deny_cid`  = '' 
-		AND `deny_gid`  = '' 
-	";
-
-
-	// Profile owner - everything is visible
-
-	if(local_user() && (local_user() == $a->profile['uid'])) {
-		$sql_extra = ''; 		
-	}
-
-	// authenticated visitor - here lie dragons
-	// If $remotecontact is true, we know that not only is this a remotely authenticated
-	// person, but that it is *our* contact, which is important in multi-user mode.
-
-	elseif($remote_contact) {
-		$gs = '<<>>'; // should be impossible to match
-		if(count($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)
-		);
-	}
+	$sql_extra = permissions_sql($a->profile['uid'],$remote_contact,$groups);
 
 	$r = q("SELECT `item`.*, `item`.`id` AS `item_id`, 
 		`contact`.`name`, `contact`.`photo`, `contact`.`url`, `contact`.`rel`,
diff --git a/mod/photo.php b/mod/photo.php
index 3bea7e72d..9809aa418 100644
--- a/mod/photo.php
+++ b/mod/photo.php
@@ -1,5 +1,7 @@
 <?php
 
+require_once('include/security.php');
+
 function photo_init(&$a) {
 
 	switch($a->argc) {
@@ -73,39 +75,7 @@ function photo_init(&$a) {
 		);
 		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)
-				);
-			}
+			$sql_extra = permissions_sql($r[0]['uid']);
 
 			// Now we'll see if we can access the photo
 
diff --git a/mod/photos.php b/mod/photos.php
index f8059fc08..2c896e32f 100644
--- a/mod/photos.php
+++ b/mod/photos.php
@@ -3,6 +3,7 @@ require_once('include/Photo.php');
 require_once('include/items.php');
 require_once('include/acl_selectors.php');
 require_once('include/bbcode.php');
+require_once('include/security.php');
 
 function photos_init(&$a) {
 
@@ -23,40 +24,8 @@ function photos_init(&$a) {
 
 		$a->data['user'] = $r[0];
 
-
-		// default permissions - anonymous user
-
-		$sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
-
-		// Profile owner - everything is visible
-
-		if(local_user() && (local_user() == $a->data['user']['uid'])) {
-			$sql_extra = ''; 	
-		}
-		elseif(remote_user()) {
-
-			$groups = init_groups_visitor(remote_user());
-
-			// authenticated visitor - here lie dragons
-			$gs = '<<>>'; // should be impossible to match
-			if(count($groups)) {
-				foreach($groups as $g)
-					$gs .= '|<' . intval($g) . '>';
-			} 
-			$sql_extra = sprintf(
-				" AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' ) 
-				  AND ( `deny_cid`  = '' OR  NOT `deny_cid` REGEXP '<%d>' ) 
-				  AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
-				  AND ( `deny_gid`  = '' OR NOT `deny_gid` REGEXP '%s') ",
-
-				intval(remote_user()),
-				intval(remote_user()),
-				dbesc($gs),
-				dbesc($gs)
-			);
-		}
-
-
+		$sql_extra = permissions_sql($a->data['user']['uid']);
+echo "SQL=$sql_extra";
 		$albums = q("SELECT distinct(`album`) AS `album` FROM `photo` WHERE `uid` = %d $sql_extra ",
 			intval($a->data['user']['uid'])
 		);
@@ -806,8 +775,6 @@ function photos_content(&$a) {
 
 	$owner_uid = $a->data['user']['uid'];
 
-
-
 	$community_page = (($a->data['user']['page-flags'] == PAGE_COMMUNITY) ? true : false);
 
 	if((local_user()) && (local_user() == $owner_uid))
@@ -858,34 +825,7 @@ function photos_content(&$a) {
 		return;
 	}
 
-	// default permissions - anonymous user
-
-	$sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
-
-	// Profile owner - everything is visible
-
-	if(local_user() && (local_user() == $owner_uid)) {
-		$sql_extra = ''; 	
-	}
-	elseif(remote_user()) {
-		// authenticated visitor - here lie dragons
-		$gs = '<<>>'; // should be impossible to match
-		if(count($groups)) {
-			foreach($groups as $g)
-				$gs .= '|<' . intval($g) . '>';
-		} 
-		$sql_extra = sprintf(
-			" AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' ) 
-			  AND ( `deny_cid`  = '' OR  NOT `deny_cid` REGEXP '<%d>' ) 
-			  AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
-			  AND ( `deny_gid`  = '' OR NOT `deny_gid` REGEXP '%s') ",
-
-			intval(remote_user()),
-			intval(remote_user()),
-			dbesc($gs),
-			dbesc($gs)
-		);
-	}
+	$sql_extra = permissions_sql($owner_uid,$remote_contact,$groups);
 
 	$o = "";
 
diff --git a/mod/profile.php b/mod/profile.php
index f2dd7f4df..e9b144ffd 100644
--- a/mod/profile.php
+++ b/mod/profile.php
@@ -164,48 +164,19 @@ function profile_content(&$a, $update = 0) {
 		}
 	}
 
-	// Construct permissions
-
-	// default permissions - anonymous user
-
-	$sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
-
-	// Profile owner - everything is visible
-
 	if($is_owner) {
-		$sql_extra = ''; 
-		
-		// Oh - while we're here... reset the Unseen messages
-
 		$r = q("UPDATE `item` SET `unseen` = 0 
 			WHERE `wall` = 1 AND `unseen` = 1 AND `uid` = %d",
-			intval($_SESSION['uid'])
+			intval(local_user())
 		);
-
 	}
 
-	// authenticated visitor - here lie dragons
-	// If $remotecontact is true, we know that not only is this a remotely authenticated
-	// person, but that it is *our* contact, which is important in multi-user mode.
-
-	elseif($remote_contact) {
-		$gs = '<<>>'; // should be impossible to match
-		if(count($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)
-		);
-	}
+	/**
+	 * Get permissions SQL - if $remote_contact is true, our remote user has been pre-verified and we already have fetched his/her groups
+	 */
+
+	$sql_extra = permissions_sql($a->profile['profile_uid'],$remote_contact,$groups);
+
 
 	$r = q("SELECT COUNT(*) AS `total`
 		FROM `item` LEFT JOIN `contact` ON `contact`.`id` = `item`.`contact-id`