view rvinterf/tmsh/bsimresp.c @ 921:74d284add54d

fc-fsio: guard against bogus readdir results from the target If the FFS being operated on contains SE K2x0 extended filenames, readdir will return strings that are bad for printing. We need to guard against this possibility, and also against possible other bogosity that could be sent by other alien firmwares.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 31 Dec 2022 22:55:23 +0000
parents 9706832b740b
children
line wrap: on
line source

/*
 * Handling of ETM_BSIM responses (FreeCalypso addition to fw)
 */

#include <sys/types.h>
#include <stdio.h>
#include "bsim_etm_cmd.h"

extern u_char rvi_msg[];
extern int rvi_msg_len;

static char *cmd_names[] = {
	"query", "disch", "start", "ci2cv", "complete", "ichg", "start-enable"
};

static void
handle_bsim_error()
{
	char *errstr;
	char msg[80];

	if (rvi_msg_len != 6) {
		print_etm_pkt_raw("ETM_BSIM long error packet");
		return;
	}
	switch (rvi_msg[3]) {
	case BSIM_ERR_BAD_CMD:
		errstr = "bad command opcode";
		break;
	case BSIM_ERR_WRONG_STATE:
		errstr = "wrong state";
		break;
	case BSIM_ERR_INV_PERCENT:
		errstr = "invalid percent";
		break;
	case BSIM_ERR_INV_DISCHARGE:
		errstr = "invalid discharge";
		break;
	default:
		errstr = "unknown";
	}
	sprintf(msg, "bsim %s error 0x%02X (%s)", cmd_names[rvi_msg[4]],
		rvi_msg[3], errstr);
	async_msg_output(msg);
}

void
handle_bsim_response()
{
	char msg[80];

	if (rvi_msg_len == 5 && rvi_msg[3] == 0x3C) {
		async_msg_output("bsim: ETM_NOSYS response");
		return;
	}
	if (rvi_msg_len < 6) {
		print_etm_pkt_raw("ETM_BSIM response too short");
		return;
	}
	if (rvi_msg[4] > BSIM_CMD_START_ENABLE) {
		print_etm_pkt_raw("ETM_BSIM unknown opcode");
		return;
	}
	if (rvi_msg[3]) {
		handle_bsim_error();
		return;
	}
	if (rvi_msg_len == 6) {
		sprintf(msg, "bsim %s OK", cmd_names[rvi_msg[4]]);
		async_msg_output(msg);
		return;
	}
	if (rvi_msg[4] == BSIM_CMD_QUERY && rvi_msg_len == 9) {
		sprintf(msg, "bsim: state=%u percent=%u start_enable=%u",
			rvi_msg[5], rvi_msg[6], rvi_msg[7]);
		async_msg_output(msg);
		return;
	}
	print_etm_pkt_raw("ETM_BSIM response wrong length");
}