HouzuoGuo

Solution is taken from: https://github.com/microsoft/WSL/issues/4898#issuecomment-646790723

cat <<'EOF' > nanosleep.c
#include <time.h>
#include <unistd.h>
int nanosleep(const struct timespec *req, struct timespec *rem)
{
    return clock_nanosleep(CLOCK_MONOTONIC, 0, req, rem);
}
int usleep(useconds_t usec)

HouzuoGuo

apt install -y ansible apache2-utils apt-transport-https autoconf automake bash binutils busybox bzip2 caca-utils ca-certificates cgroup-tools cloc cscope ctags curl dateutils dbus diffutils dnsutils dos2unix expat findutils finger gdb gnupg gnutls-bin hostname htop iftop iotop iputils-ping iputils-tracepath lftp lm-sensors locales locales-all lrzsz lsof mailutils make minicom miscfiles moreutils mosh netcat net-tools nicstat nmap nmon openssl p7zip patchutils pciutils procps psmisc rsync screen shellcheck silversearcher-ag snmp socat software-properties-common strace sudo tcpdump tcptraceroute telnet tmux traceroute tree tshark unar uniutils unzip usbutils util-linux util-linux-locales vim wbritish wget whois wiggle yamllint zip zlib1g

HouzuoGuo

Start the server

docker run -it --rm -e POSTGRES_PASSWORD=demo -e POSTGRES_HOST_AUTH_METHOD=trust postgres:10

Prepare DB client

cat <<EOF >test.csv
title,url
"NHS facing Italian-style coronavirus crisis if we don't stay at home, says Boris Johnson",https://www.telegraph.co.uk/politics/2020/03/21/nhs-facing-italian-style-crisis-dont-stay-home-says-boris-johnson/

Italy: PM warns of worst crisis since WW2 as coronavirus deaths leap by almost 800,https://www.theguardian.com/world/2020/mar/22/italian-pm-warns-of-worst-crisis-since-ww2-as-coronavirus-deaths-leap-by-almost-800

HouzuoGuo

# Run the commands in a docker container: docker run -it --rm ubuntu:18.04
cat > /etc/apt/sources.list <<EOF
deb http://archive.ubuntu.com/ubuntu/ bionic main restricted
deb-src http://archive.ubuntu.com/ubuntu/ bionic main restricted
deb http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted
deb http://archive.ubuntu.com/ubuntu/ bionic universe
deb-src http://archive.ubuntu.com/ubuntu/ bionic universe
deb http://archive.ubuntu.com/ubuntu/ bionic-updates universe
deb-src http://archive.ubuntu.com/ubuntu/ bionic-updates universe

HouzuoGuo

# Edit APT sources list file and uncomment/enable deb-src sources, then:
sudo dpkg --add-architecture armhf
sudo apt-get update
sudo apt-get install crossbuild-essential-armhf
sudo apt-get build-dep -a armhf openssl
apt-get source openssl
cd openssl-1.1.1
debuild -- clean
env DEB_HOST_MULTIARCH=armhf DEB_BUILD_OPTIONS=nocheck debuild -uc -us -aarmhf

HouzuoGuo

section .text
  global _start

_start:
  push 1
  push 2
  call add2 ; rax = add2(1, 2)

  push 3
  push 4

HouzuoGuo

### Keybase proof

I hereby claim:

  * I am HouzuoGuo on github.
  * I am hguo (https://keybase.io/hguo) on keybase.
  * I have a public key whose fingerprint is 60BD 93B6 F0C4 FCC7 1735  08D4 4132 7BD9 50FA B38C

To claim this, I am signing this object:

HouzuoGuo

debug_options ALL,2

coredump_dir /var/spool/squid
pid_filename /var/run/squid-https.pid
access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log

# Avoid interfering with timeout behaviour of TCP client applications
# The timeout values are 10x their default
shutdown_lifetime 10 seconds

HouzuoGuo

void setup()
{
    Serial.begin(1200);
    Serial.setTimeout(1000);
    Serial.println("Microcontroller has started");
}

int seqNum = 0;
String lastRead = "";

HouzuoGuo

Intermediate proxy, the initial receipient of HTTP traffic:

coredump_dir /var/spool/squid
pid_filename /var/run/squid-http.pid
access_log /var/log/squid-http.log
cache_log /var/log/squid-http.log
via off
cache_peer 127.0.0.1 parent 13129 0 default no-query no-digest
never_direct allow all
http_access allow all