Kentzo

Authoritative DNS Server on RouterOS with CoreDNS

RouterOS script that uses CoreDNS to:

• Prevent leaks of queries for domains in Locally-Served DNS zones
• Set up Comprehensive A/AAAA/PTR resource records for hosts
• Set up PTR/SRV/TXT resource records for Wide-Area DNS-Based Service Discovery

Introduction

Kentzo

# argLoopbackInt: name of the loopback interface
# argWanPool: name of the WAN pool 
# argUlaPool: name of the ULA pool
# argManagedID: regex-escaped unique ID of the managed objects

:global argLoopbackInt
:global argWanPool
:global argUlaPool
:global argManagedID

Kentzo

# Usage:
#
# - $parseIP6Address ip6 [prefix length] [detail=yes]
# - $parseIP6Address ip6-prefix [detail=yes]
#
# Returns:
#
# - address (ip6): IPv6 address of the input
#   addressPrefix (ip6-prefix): IPv6 address-prefix of the input
#   prefix (ip6): Prefix of the input

Kentzo

Kentzo

The benchmark measures and compares execution time and peak memory consumption of the current and new commonpath methods.

Measurement is performed using batches of 1000 paths. Each batch contains paths generated with the following variables:

1. Length of each path part (range(16, 65, 16))
2. Number of parts (range(4, 17, 4))
3. Number of common parts (range(parts_count + 1))

The batch is then split into chunks of equal size such that paths in each following chunk reduce the number of common parts so far by 1 up to the selected number [3], e.g. if the selected number of common parts is 1 then the batch would be "a/b/c", "a/b/c", "a/b/d", "a/b/d", "a/c/d", "a/c/d", "a/c/d".

Each batch is tested in two permutations:

Kentzo

import contextlib
import subprocess

def file_proc():
    args = [
        '/usr/bin/file',
        '--brief',
        '-E',
        '--no-dereference',
        '--no-buffer',

Kentzo

punpckldq  xmm0, 0x4530000043300000
subpd      xmm0, 0x4330000000000000
haddpd     xmm0, xmm0

Kentzo

Among the small subset of Carbon API that still exists and has no modern replacement is an API to register Global Hot Keys. This API works in 2 steps:

1. Install an Event Handler for GetEventDispatcherTarget() for kEventHotKeyPressed and kEventHotKeyReleased
2. Registering Hot Keys with RegisterEventHotKey for GetEventDispatcherTarget()

Once the registered key combination is pressed, custom Event Handler gets called. The handler can then either return a noErr indicating that the event was processed and does not need to be propagated further, return eventNotHandledErr indicating that event should be propagated or any other error.

This issue with this API is that once a keyboard event is recognized as a Hot Key it's not put back onto event queues by macOS as a regular KeyDown / KeyUp event. Not even when all installed event handlers return eventNotHandledErr.

The workaround is to construct the appropriate KeyDown / KeyUp and manually post it on an event queue. This, unfortunately, requires the app to have t

Kentzo

void _NoReentryScopeEnter(BOOL *aVar)
{
    if (*aVar)
        [NSException raise:NSInternalInconsistencyException format:@"the method is not reentrable"];

    *aVar = YES;
}

void _NoReentryScopeLeave(BOOL **aVar)
{

Kentzo

NS_SWIFT_NAME(RecorderControlStyle)
@interface SRRecorderControlStyle: NSObject
@end

NS_SWIFT_NAME(SRRecorderControlStyle.Components)
// NS_SWIFT_NAME(RecorderControlStyle.Components) also works!
@interface SRRecorderControlStyleComponents: NSObject
@end

typedef NS_ENUM(NSUInteger, SRRecorderControlStyleComponentsAppearance)