Only check for newlines at the end of client strings if the string length is at least one.

1 files changed, 5 insertions, 2 deletions

diff --git a/blabouncer.c b/blabouncer.c
index ddcd07f..119e725 100644
--- a/blabouncer.c
+++ b/blabouncer.c
@@ -825,8 +825,11 @@ void dochat(int *serversockfd, int *clientsockfd, struct settings *settings) {
             // null terminate that baby
             clientbuf[clientnumbytes] = '\0'; // TODO make sure this can't overrun if some super long line (max bytes?) was received
             // clear up any newlines - TODO - Should we be doing this?  If not, we can stop only doing truncation checks for the server in processrawstring().
-            while (clientbuf[strlen(clientbuf) - 1] == '\n' || clientbuf[strlen(clientbuf) - 1] == '\r') {
-              clientbuf[strlen(clientbuf) - 1] = '\0';
+            // Only check for newlines if the string length is at least one!
+            if (strlen(clientbuf) > 0) {
+              while (clientbuf[strlen(clientbuf) - 1] == '\n' || clientbuf[strlen(clientbuf) - 1] == '\r') {
+                clientbuf[strlen(clientbuf) - 1] = '\0';
+              }
             }
             debugprint(DEBUG_SOME, "BOUNCER-CLIENT RECEIVED: '%s'\n", clientbuf);