view target-utils/libcommon/dispatch.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 e7502631a0f9
children
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/*
 * This module implements the dispatch of interactively entered
 * commands to their respective implementation functions via cmdtab.
 */

#include "cmdtab.h"

extern char command[];
extern struct cmdtab cmdtab[];

void
command_dispatch()
{
	char *cp, *np;
	struct cmdtab *tp;

	for (cp = command; *cp == ' '; cp++)
		;
	if (!*cp)
		return;
	for (np = cp; *cp && *cp != ' '; cp++)
		;
	if (*cp)
		*cp++ = '\0';
	for (tp = cmdtab; tp->cmd; tp++)
		if (!strcmp(tp->cmd, np))
			break;
	if (tp->func)
		tp->func(cp);
	else
		printf("ERROR: unknown or unimplemented command\n");
}