From ffbf8f4b8e87f1974a1488d5269659eccbb162e6 Mon Sep 17 00:00:00 2001 From: antirez Date: Thu, 13 Sep 2018 08:31:55 +0200 Subject: LOLWUT: Limit maximum CPU effort. --- src/lolwut.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/lolwut.c b/src/lolwut.c index 33824729b..63258095d 100644 --- a/src/lolwut.c +++ b/src/lolwut.c @@ -261,9 +261,14 @@ void lolwutCommand(client *c) { getLongFromObjectOrReply(c,c->argv[3],&squares_per_col,NULL) != C_OK) return; + /* Limits. We want LOLWUT to be always reasonably fast and cheap to execute + * so we have maximum number of columns, rows, and output resulution. */ if (cols < 1) cols = 1; + if (cols > 1000) cols = 1000; if (squares_per_row < 1) squares_per_row = 1; + if (squares_per_row > 200) squares_per_row = 200; if (squares_per_col < 1) squares_per_col = 1; + if (squares_per_col > 200) squares_per_col = 200; /* Generate some computer art and reply. */ lwCanvas *canvas = lwDrawSchotter(cols,squares_per_row,squares_per_col); -- cgit v1.2.1