D5054.1775349280.diff
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D5054.1775349280.diff
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	diff --git a/lib/kolab_sync_backend_state.php b/lib/kolab_sync_backend_state.php
	--- a/lib/kolab_sync_backend_state.php
	+++ b/lib/kolab_sync_backend_state.php
	@@ -115,6 +115,10 @@
	$select = $this->db->limitquery("SELECT * FROM `{$this->table_name}` WHERE " . implode(' AND ', $where)
	. " ORDER BY `counter` DESC", 0, 1);

	+ if ($err = $this->db->is_error($select)) {
	+ throw new Exception("Query failed while fetching sync state: {$err}");
	+ }
	+
	$state = $this->db->fetch_assoc($select);

	if (empty($state)) {
	@@ -164,6 +168,10 @@

	$select = $this->db->query("SELECT * FROM `{$this->table_name}` WHERE " . implode(' AND ', $where));

	+ if ($err = $this->db->is_error($select)) {
	+ throw new Exception("Query failed while validating sync state: {$err}");
	+ }
	+
	while ($row = $this->db->fetch_assoc($select)) {
	$states[$row['counter']] = $this->get_object($row);
	}
	@@ -223,6 +231,9 @@
	$where['counter'] = $this->db->quote_identifier('counter') . ' > ' . $this->db->quote($sync_key);

	$select = $this->db->query("SELECT id FROM `{$this->table_name}` WHERE " . implode(' AND ', $where));
	+ if ($err = $this->db->is_error($select)) {
	+ throw new Exception("Query failed while checking for sync state: {$err}");
	+ }
	return $this->db->num_rows($select) > 0;
	}
	}