add check to make sure the database is open with write permissions

Using `sqlite_open` with `SQLITE_OPEN_READWRITE` doesn't guarantee
the database will be open with read-write permissions.
	- See: https://www.sqlite.org/c3ref/open.html

1 files changed, 8 insertions, 0 deletions

diff --git a/src/database.cc b/src/database.cc
index 104224d..4b06386 100644
--- a/src/database.cc
+++ b/src/database.cc
@@ -2410,6 +2410,14 @@ bool InitDatabase(void){
 		return false;
 	}
 
+	if(sqlite3_db_readonly(g_Database, NULL)){
+		LOG_ERR("Failed to open database file \"%s\" with WRITE PERMISSIONS."
+				" Make sure the file has the appropriate permissions and is"
+				" owned by the same user running the query manager.",
+				g_DatabaseFile);
+		return false;
+	}
+
 	if(!InitStatementCache()){
 		LOG_ERR("Failed to initialize statement cache");
 		return false;