view rvinterf/etmsync/dispatch.c @ 1011:6d9b10633f10

etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents e7502631a0f9
children
line wrap: on
line source

/*
 * This module implements the command dispatch for fc-fsio
 * and possibly other similar utilities in the future.
 */

#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include "cmdtab.h"
#include "exitcodes.h"

extern struct cmdtab cmdtab[];

parse_and_dispatch_cmd(cmd, is_script)
	char *cmd;
{
	char *argv[MAX_CMD_ARGS+2];
	char *cp, **ap;
	struct cmdtab *tp;

	for (cp = cmd; isspace(*cp); cp++)
		;
	if (!*cp || *cp == '#')
		return(0);
	if (is_script)
		printf("Script command: %s\n", cp);
	argv[0] = cp;
	while (*cp && !isspace(*cp))
		cp++;
	if (*cp)
		*cp++ = '\0';
	for (tp = cmdtab; tp->cmd; tp++)
		if (!strcmp(tp->cmd, argv[0]))
			break;
	if (!tp->func) {
		fprintf(stderr, "error: no such command\n");
		return(ERROR_USAGE);
	}
	for (ap = argv + 1; ; ) {
		while (isspace(*cp))
			cp++;
		if (!*cp || *cp == '#')
			break;
		if (ap - argv - 1 >= tp->maxargs) {
			fprintf(stderr, "error: too many arguments\n");
			return(ERROR_USAGE);
		}
		if (*cp == '"') {
			*ap++ = ++cp;
			while (*cp && *cp != '"')
				cp++;
			if (*cp != '"') {
				fprintf(stderr,
					"error: unterminated quoted string\n");
				return(ERROR_USAGE);
			}
			*cp++ = '\0';
		} else {
			*ap++ = cp;
			while (*cp && !isspace(*cp))
				cp++;
			if (*cp)
				*cp++ = '\0';
		}
	}
	if (ap - argv - 1 < tp->minargs) {
		fprintf(stderr, "error: too few arguments\n");
		return(ERROR_USAGE);
	}
	*ap = 0;
	return tp->func(ap - argv, argv);
}

dispatch_ready_argv(argc, argv)
	char **argv;
{
	struct cmdtab *tp;

	for (tp = cmdtab; tp->cmd; tp++)
		if (!strcmp(tp->cmd, argv[0]))
			break;
	if (!tp->func) {
		fprintf(stderr, "error: no such command\n");
		return(ERROR_USAGE);
	}
	if (argc - 1 > tp->maxargs) {
		fprintf(stderr, "error: too many arguments\n");
		return(ERROR_USAGE);
	}
	if (argc - 1 < tp->minargs) {
		fprintf(stderr, "error: too few arguments\n");
		return(ERROR_USAGE);
	}
	return tp->func(argc, argv);
}

cmd_exec(argc, argv)
	char **argv;
{
	FILE *f;
	char linebuf[512], *cp;
	int lineno, retval = 0;

	f = fopen(argv[1], "r");
	if (!f) {
		perror(argv[1]);
		return(ERROR_USAGE);
	}
	for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) {
		cp = index(linebuf, '\n');
		if (!cp) {
			fprintf(stderr, "%s line %d: missing newline\n",
				argv[1], lineno);
			fclose(f);
			return(ERROR_USAGE);
		}
		*cp = '\0';
		retval = parse_and_dispatch_cmd(linebuf, 1);
		if (retval)
			break;
	}
	fclose(f);
	return(retval);
}

cmd_exit()
{
	exit(0);
}