Function finsh_wait_auth

components/finsh/shell.c:330–385

}

static void finsh_wait_auth(void)
{
    int ch;
    rt_bool_t input_finish = RT_FALSE;
    char password[FINSH_PASSWORD_MAX] = { 0 };
    rt_size_t cur_pos = 0;
    /* password not set */
    if (rt_strlen(finsh_get_password()) == 0) return;

    while (1)
    {
        rt_kprintf("Password for login: ");
        while (!input_finish)
        {
            while (1)
            {
                /* read one character from device */
                ch = (int)finsh_getchar();
                if (ch < 0)
                {
                    continue;
                }

                if (ch >= ' ' && ch <= '~' && cur_pos < FINSH_PASSWORD_MAX)
                {
                    /* change the printable characters to '*' */
                    rt_kprintf("*");
                    password[cur_pos++] = ch;
                }
                else if (ch == '\b' && cur_pos > 0)
                {
                    /* backspace */
                    cur_pos--;
                    password[cur_pos] = '\0';
                    rt_kprintf("\b \b");
                }
                else if (ch == '\r' || ch == '\n')
                {
                    rt_kprintf("\n");
                    input_finish = RT_TRUE;
                    break;
                }
            }
        }
        if (!rt_strncmp(shell->password, password, FINSH_PASSWORD_MAX)) return;
        else
        {
            /* authentication failed, delay 2S for retry */
            rt_thread_delay(2 * RT_TICK_PER_SECOND);
            rt_kprintf("Sorry, try again.\n");
            cur_pos = 0;
            input_finish = RT_FALSE;
            rt_memset(password, '\0', FINSH_PASSWORD_MAX);
        }
    }
}
#endif /* FINSH_USING_AUTH */