/*
 * This module has been copied from ltscript.c, ltdispatch.c and ltpassthru.c:
 * here we implement the init-script functionality for fc-xram.
 */

#include <sys/param.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>

extern char default_helpers_dir[];

static
loadagent_cmd(argc, argv)
	char **argv;
{
	if (tpinterf_make_cmd(argv) < 0) {
		fprintf(stderr, "error: unable to form target command\n");
		return(-1);
	}
	if (tpinterf_send_cmd() < 0)
		return(-1);
	return tpinterf_pass_output(1);
}

static struct cmdtab {
	char *cmd;
	int minargs;
	int maxargs;
	int (*func)();
} cmdtab[] = {
	{"w8", 2, 2, loadagent_cmd},
	{"w16", 2, 2, loadagent_cmd},
	{"w32", 2, 2, loadagent_cmd},
	{0, 0, 0, 0}
};

static
dispatch_cmd(cmd)
	char *cmd;
{
	char *argv[10];
	char *cp, **ap;
	struct cmdtab *tp;

	for (cp = cmd; isspace(*cp); cp++)
		;
	if (!*cp || *cp == '#')
		return(0);
	printf("init-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(-1);
	}
	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(-1);
		}
		*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(-1);
	}
	*ap = 0;
	return tp->func(ap - argv, argv);
}

exec_init_script(script_name)
	char *script_name;
{
	char pathbuf[MAXPATHLEN], *openfname;
	FILE *f;
	char linebuf[512], *cp;
	int lineno, retval = 0;

	if (index(script_name, '/'))
		openfname = script_name;
	else {
		sprintf(pathbuf, "%s/%s", default_helpers_dir, script_name);
		openfname = pathbuf;
	}
	f = fopen(openfname, "r");
	if (!f) {
		perror(openfname);
		return(-1);
	}
	for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) {
		cp = index(linebuf, '\n');
		if (!cp) {
			fprintf(stderr, "%s line %d: missing newline\n",
				openfname, lineno);
			fclose(f);
			return(-1);
		}
		*cp = '\0';
		retval = dispatch_cmd(linebuf);
		if (retval)
			break;
	}
	fclose(f);
	return(retval);
}