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| -rw-r--r-- | functions.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/functions.c b/functions.c index 31282ed..377f1af 100644 --- a/functions.c +++ b/functions.c @@ -438,6 +438,12 @@ void updategreetings(char *greeting001, char *greeting002, char *greeting003, ch // TODO - Use this wherever we are calculating the position (various places) instead of // duplicating code. int arrindex(struct client *clients, int clientfd) { + // Make sure the client fd requested is >0 (less than 0 is nonsense, 0 is almost certainly standard input) + if (clientfd < 1) { + debugprint(DEBUG_CRIT, "arrindex(): error: requested client fd '%d' is less than 1, returning -1.\n", clientfd); + return -1; + } + // Find the client in the clients array for (int i = 0; i < MAXCLIENTS; i++) { if (clients[i].fd == clientfd) { |