trepidacious

Raspberry Pi VPN Router

This is a quick-and-dirty guide to setting up a Raspberry Pi as a "router on a stick" to ExpressVPN.

This is adapted from SuperJamie's gist.

Requirements

I used a Raspberry Pi 3 - seems like the extra speed may be useful for running VPN.

trepidacious

//Finish a block of non-zero bytes by outputting the code to the current code pointer,
//then setting the new code pointer to the current output destination, and incrementing
//the output destination (essentially reserving a byte of output to be later set to the
//code for the new run we are starting). Reset code to 0x01, for no bytes in the new run
//we are starting.
#define cobs_finish_block(X) (*code_ptr = (X), code_ptr = dst++, code = 0x01)

void cobs_stuff_data(const uint8_t *ptr, size_t length, uint8_t *dst, size_t *stuffed_length) {
  const uint8_t *end = ptr + length;
  const uint8_t *dst_start = dst;

trepidacious

195.3 ms13.41 %	195.3 ms13.41 %	Chart.bundle.js:7736helpers.clone
194.0 ms13.32 %	194.0 ms13.32 %	Chart.bundle.js:6333(anonymous function)
194.0 ms13.32 %	194.0 ms13.32 %	Chart.bundle.js:6331Chart.controllers.line.Chart.DatasetController.extend.updateBezierControlPoints
192.8 ms13.24 %	192.8 ms13.24 %	Chart.bundle.js:6148Chart.controllers.line.Chart.DatasetController.extend.addElementAndReset
192.8 ms13.24 %	192.8 ms13.24 %	Chart.bundle.js:7577buildOrUpdateElements
192.8 ms13.24 %	192.8 ms13.24 %	Chart.bundle.js:7218(anonymous function)
192.8 ms13.24 %	192.8 ms13.24 %	Chart.bundle.js:7714helpers.each
192.8 ms13.24 %	192.8 ms13.24 %	Chart.bundle.js:7203update
192.8 ms13.24 %	192.8 ms13.24 %	:5000/elements/boxes-scatter/boxes-scatter.html:101(anonymous function)
192.8 ms13.24 %	192.8 ms13.24 %	:5000/bower_components/polymer/polymer.html:1291(anonymous function)

trepidacious

1. Install IDEA 14 Community edition
2. In Idea:
   1. Install Scala plugin (Preferences -> Plugins, type Scala at top, install)
   2. Install Android Support plugin
3. Check out an android project using android-sdk-plugin, e.g. https://github.com/macroid/macroid-starter
4. Import into IDEA using SBT import. File->Import Project, navigate to root of project, import as SBT.
5. For SDK, choose the android option.
6. If necessary, create Scala library when prompted.
7. Delete "Make" from any run configuration(s). Run-> Edit Configurations... then in the activity, scroll to bottom and delete Make from the "Before launch" list.
8. Build and run the project from SBT, but you can edit it in IDEA.

trepidacious

{
    "_type_": "Person",
    "_id_": 0,
    "name": "name",
    "friend": {
        "_type_": "Option",
        "Some": {
            "_type_": "Person",
            "_id_": 1,
            "name": "q",

trepidacious

#include "ch.h"
#include "hal.h"
#include "stmdrivers/stm32f4xx_rcc.h"
#include "stmdrivers/stm32f4xx_fsmc.h"

void fsmc_early_init(void) {
  FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
  FSMC_NORSRAMTimingInitTypeDef  p;

  rccEnableAHB3(RCC_AHB3ENR_FSMCEN, FALSE);

trepidacious

public class ListBuilder {
  
  private final StringBuilder b = new StringBuilder();
  public ListBuilder li(String s) {
    if (s!=null && !s.trim().isEmpty()) {
      b.append("<li>"); b.append(s); b.append(</li>);
    }
    return this;
  }
  public String toString() {

trepidacious

void mcu_generate_local_mac(uint8_t *mac) {
  uint32_t i = 0;
  uint32_t m_w = 0;
  uint32_t m_z = 0;

  for (i = 0; i < 4; i++) {
    m_w = (m_w << 8) + mcu_unique_device_id_byte(i*3);
    m_z = (m_z << 8) + mcu_unique_device_id_byte(i*3 + 2);
  }
  m_w += mcu_unique_device_id_byte(1) * 5 + mcu_unique_device_id_byte(7) * 7;

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  def plotSignal(c: Channel) = {
    def alternating(s: Boolean): Stream[Boolean] = s #:: alternating(!s)
    def y(s: Boolean) = if (s) 1 else 0
    c.signal().changeTimes.zip(alternating(c.signal().initialState)).flatMap{case(time, state) => List(Vec2(time, y(state)), Vec2(time, y(!state)))}
  }

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package boxes.util

trait Op {
  def apply()
}

class OpDefault(action: => Unit) extends Op {
  def apply() {
    action
  }