view uptools/atcmd/atcmd.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 dc2fd8e6f42c
children
line wrap: on
line source

/*
 * This utility allows a single AT command to be issued
 * through the atinterf framework.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "../../rvinterf/include/exitcodes.h"

extern char at_response[];

int_callback()
{
	puts(at_response+1);
}

main(argc, argv)
	char **argv;
{
	int c;
	extern int optind;

	while ((c = getopt(argc, argv, "B:np:RX:")) != EOF)
		if (!atinterf_cmdline_opt(c)) {
			/* error msg already printed */
			exit(ERROR_USAGE);
		}
	if (argc != optind + 1 || strncasecmp(argv[optind], "AT", 2)) {
		fprintf(stderr, "usage: %s [options] at-cmd\n", argv[0]);
		exit(ERROR_USAGE);
	}
	atinterf_init();
	atinterf_exec_cmd(argv[optind], (char *) 0, int_callback);
	puts(at_response+1);
	exit(0);
}