FreeCalypso > hg > freecalypso-tools
view rvinterf/libasync/rvtrace.c @ 965:2969032bdfac
fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing
The only 100% safe way to pass a NULL pointer as a function argument
in K&R C is to cast 0 to a pointer type; failing to do so may cause
mysterious bugs (invalid stack frames or garbage in argument registers)
on 64-bit machines. This issue has already been fixed in most of
FC host tools, but I just found some missed spots: passing of NULL UDH
to PDU encoding functions in fcup-smsend[mult] in the case of single
(not concatenated) SMS.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 01 Sep 2023 07:33:51 +0000 |
parents | 6a0aa8d36d06 |
children |
line wrap: on
line source
/* * Here we detect and handle "Lost Message" packets. */ #include <sys/types.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "pktmux.h" #include "limits.h" #include "localsock.h" extern u_char rvi_msg[]; extern int rvi_msg_len; void handle_useid_0() { char buf[MAX_PKT_FROM_TARGET*4]; if (strncmp(rvi_msg + 7, "RVT: Lost Message", 17)) return; safe_print_trace(rvi_msg + 7, rvi_msg_len - 7, buf); async_msg_output(buf); }