From f71f6139f4401474166a41b8918df7e29318c405 Mon Sep 17 00:00:00 2001
From: Joe Crayne <joe@jerkface.net>
Date: Sun, 12 Jan 2020 04:10:38 -0500
Subject: Scripts to run a toxcore DHT network on localhost.

---
 dht/vnet/README.vnet.md       |   2 +
 dht/vnet/build.sh             |   4 +-
 dht/vnet/core-build.sh        | 183 ++++++++++++++++++++++++++++++++++++++++++
 dht/vnet/core-clean.sh        |  46 +++++++++++
 dht/vnet/core-run.sh          |  49 +++++++++++
 dht/vnet/core-screen-shell.sh |  58 +++++++++++++
 dht/vnet/run.sh               |   2 +-
 7 files changed, 342 insertions(+), 2 deletions(-)
 create mode 100755 dht/vnet/core-build.sh
 create mode 100755 dht/vnet/core-clean.sh
 create mode 100755 dht/vnet/core-run.sh
 create mode 100755 dht/vnet/core-screen-shell.sh

diff --git a/dht/vnet/README.vnet.md b/dht/vnet/README.vnet.md
index caa84057..9bceb221 100644
--- a/dht/vnet/README.vnet.md
+++ b/dht/vnet/README.vnet.md
@@ -65,6 +65,8 @@ environments.  The following man pages are relevant:
   man 2 clone
   man 8 iptables
   man 7 cgroups
+  man 7 network_namespaces
+  man 1 nsenter
 
 We need to bootstrap an instance of dhtd off of our test network and also an
 instance of uTox (or some other toxcore-based client) and get them to build a
diff --git a/dht/vnet/build.sh b/dht/vnet/build.sh
index 5354969a..7f7787f0 100755
--- a/dht/vnet/build.sh
+++ b/dht/vnet/build.sh
@@ -72,7 +72,9 @@ buildtaps() {
 
 buildtaps
 
-num=$(ip addr show wlan0 | sed -n '/\s\+inet 192/ s/\s\+inet 192\.168\.[0-9]*\.\([0-9]*\).*$/\1/ p')
+iface=$(ip route | awk '/^default/{ if ($4 == "dev") print($5); }')
+iface=${iface:-wlan0}
+num=$(ip addr show $iface | sed -n '/\s\+inet 192/ s/\s\+inet 192\.168\.[0-9]*\.\([0-9]*\).*$/\1/ p')
 num=${num:-88}
 
 ip addr add 80.$num.99.99 dev ep0
diff --git a/dht/vnet/core-build.sh b/dht/vnet/core-build.sh
new file mode 100755
index 00000000..1b8f3d8a
--- /dev/null
+++ b/dht/vnet/core-build.sh
@@ -0,0 +1,183 @@
+#!/bin/sh
+
+set -x
+
+buildveths() {
+    ip link add ve0 type veth peer name vep0
+    ip link add ve1 type veth peer name vep1
+    ip link add ve2 type veth peer name vep2
+    ip link add ve3 type veth peer name vep3
+    ip link add ve4 type veth peer name vep4
+    ip link add ve5 type veth peer name vep5
+    ip link add ve6 type veth peer name vep6
+    ip link add ve7 type veth peer name vep7
+    ip link add ve8 type veth peer name vep8
+    ip link add ve9 type veth peer name vep9
+    ip link add veA type veth peer name vepA
+    ip link add veB type veth peer name vepB
+    ip link add veC type veth peer name vepC
+    ip link add veD type veth peer name vepD
+    ip link add veE type veth peer name vepE
+    ip link add veF type veth peer name vepF
+
+    ip netns add vep0; ip link set vep0 netns vep0
+    ip netns add vep1; ip link set vep1 netns vep1
+    ip netns add vep2; ip link set vep2 netns vep2
+    ip netns add vep3; ip link set vep3 netns vep3
+    ip netns add vep4; ip link set vep4 netns vep4
+    ip netns add vep5; ip link set vep5 netns vep5
+    ip netns add vep6; ip link set vep6 netns vep6
+    ip netns add vep7; ip link set vep7 netns vep7
+    ip netns add vep8; ip link set vep8 netns vep8
+    ip netns add vep9; ip link set vep9 netns vep9
+    ip netns add vepA; ip link set vepA netns vepA
+    ip netns add vepB; ip link set vepB netns vepB
+    ip netns add vepC; ip link set vepC netns vepC
+    ip netns add vepD; ip link set vepD netns vepD
+    ip netns add vepE; ip link set vepE netns vepE
+    ip netns add vepF; ip link set vepF netns vepF
+}
+
+buildveths
+
+iface=$(ip route | awk '/^default/{ if ($4 == "dev") print($5); }')
+iface=${iface:-wlan0}
+num=$(ip addr show $iface | sed -n '/\s\+inet 192/ s/\s\+inet 192\.168\.[0-9]*\.\([0-9]*\).*$/\1/ p')
+num=${num:-88}
+
+ip addr add 60.$num.99.98/31 dev ve0
+ip addr add 61.$num.99.98/31 dev ve1
+ip addr add 62.$num.99.98/31 dev ve2
+ip addr add 63.$num.99.98/31 dev ve3
+ip addr add 64.$num.99.98/31 dev ve4
+ip addr add 65.$num.99.98/31 dev ve5
+ip addr add 66.$num.99.98/31 dev ve6
+ip addr add 67.$num.99.98/31 dev ve7
+ip addr add 68.$num.99.98/31 dev ve8
+ip addr add 69.$num.99.98/31 dev ve9
+ip addr add 70.$num.99.98/31 dev veA
+ip addr add 71.$num.99.98/31 dev veB
+ip addr add 72.$num.99.98/31 dev veC
+ip addr add 73.$num.99.98/31 dev veD
+ip addr add 74.$num.99.98/31 dev veE
+ip addr add 75.$num.99.98/31 dev veF
+
+ip link set up dev ve0
+ip link set up dev ve1
+ip link set up dev ve2
+ip link set up dev ve3
+ip link set up dev ve4
+ip link set up dev ve5
+ip link set up dev ve6
+ip link set up dev ve7
+ip link set up dev ve8
+ip link set up dev ve9
+ip link set up dev veA
+ip link set up dev veB
+ip link set up dev veC
+ip link set up dev veD
+ip link set up dev veE
+ip link set up dev veF
+
+
+nsenter --net=/var/run/netns/vep0 ip addr add 60.$num.99.99/31 dev vep0
+nsenter --net=/var/run/netns/vep1 ip addr add 61.$num.99.99/31 dev vep1
+nsenter --net=/var/run/netns/vep2 ip addr add 62.$num.99.99/31 dev vep2
+nsenter --net=/var/run/netns/vep3 ip addr add 63.$num.99.99/31 dev vep3
+nsenter --net=/var/run/netns/vep4 ip addr add 64.$num.99.99/31 dev vep4
+nsenter --net=/var/run/netns/vep5 ip addr add 65.$num.99.99/31 dev vep5
+nsenter --net=/var/run/netns/vep6 ip addr add 66.$num.99.99/31 dev vep6
+nsenter --net=/var/run/netns/vep7 ip addr add 67.$num.99.99/31 dev vep7
+nsenter --net=/var/run/netns/vep8 ip addr add 68.$num.99.99/31 dev vep8
+nsenter --net=/var/run/netns/vep9 ip addr add 69.$num.99.99/31 dev vep9
+nsenter --net=/var/run/netns/vepA ip addr add 70.$num.99.99/31 dev vepA
+nsenter --net=/var/run/netns/vepB ip addr add 71.$num.99.99/31 dev vepB
+nsenter --net=/var/run/netns/vepC ip addr add 72.$num.99.99/31 dev vepC
+nsenter --net=/var/run/netns/vepD ip addr add 73.$num.99.99/31 dev vepD
+nsenter --net=/var/run/netns/vepE ip addr add 74.$num.99.99/31 dev vepE
+nsenter --net=/var/run/netns/vepF ip addr add 75.$num.99.99/31 dev vepF
+
+nsenter --net=/var/run/netns/vep0 ip link set up dev vep0
+nsenter --net=/var/run/netns/vep1 ip link set up dev vep1
+nsenter --net=/var/run/netns/vep2 ip link set up dev vep2
+nsenter --net=/var/run/netns/vep3 ip link set up dev vep3
+nsenter --net=/var/run/netns/vep4 ip link set up dev vep4
+nsenter --net=/var/run/netns/vep5 ip link set up dev vep5
+nsenter --net=/var/run/netns/vep6 ip link set up dev vep6
+nsenter --net=/var/run/netns/vep7 ip link set up dev vep7
+nsenter --net=/var/run/netns/vep8 ip link set up dev vep8
+nsenter --net=/var/run/netns/vep9 ip link set up dev vep9
+nsenter --net=/var/run/netns/vepA ip link set up dev vepA
+nsenter --net=/var/run/netns/vepB ip link set up dev vepB
+nsenter --net=/var/run/netns/vepC ip link set up dev vepC
+nsenter --net=/var/run/netns/vepD ip link set up dev vepD
+nsenter --net=/var/run/netns/vepE ip link set up dev vepE
+nsenter --net=/var/run/netns/vepF ip link set up dev vepF
+
+nsenter --net=/var/run/netns/vep0 ip route add default via 60.$num.99.98
+nsenter --net=/var/run/netns/vep1 ip route add default via 61.$num.99.98
+nsenter --net=/var/run/netns/vep2 ip route add default via 62.$num.99.98
+nsenter --net=/var/run/netns/vep3 ip route add default via 63.$num.99.98
+nsenter --net=/var/run/netns/vep4 ip route add default via 64.$num.99.98
+nsenter --net=/var/run/netns/vep5 ip route add default via 65.$num.99.98
+nsenter --net=/var/run/netns/vep6 ip route add default via 66.$num.99.98
+nsenter --net=/var/run/netns/vep7 ip route add default via 67.$num.99.98
+nsenter --net=/var/run/netns/vep8 ip route add default via 68.$num.99.98
+nsenter --net=/var/run/netns/vep9 ip route add default via 69.$num.99.98
+nsenter --net=/var/run/netns/vepA ip route add default via 70.$num.99.98
+nsenter --net=/var/run/netns/vepB ip route add default via 71.$num.99.98
+nsenter --net=/var/run/netns/vepC ip route add default via 72.$num.99.98
+nsenter --net=/var/run/netns/vepD ip route add default via 73.$num.99.98
+nsenter --net=/var/run/netns/vepE ip route add default via 74.$num.99.98
+nsenter --net=/var/run/netns/vepF ip route add default via 75.$num.99.98
+
+nsenter --net=/var/run/netns/vep0 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep1 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep2 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep3 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep4 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep5 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep6 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep7 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep8 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vep9 ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vepA ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vepB ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vepC ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vepD ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vepE ip addr add 127.0.0.1/8 dev lo
+nsenter --net=/var/run/netns/vepF ip addr add 127.0.0.1/8 dev lo
+
+nsenter --net=/var/run/netns/vep0 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep1 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep2 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep3 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep4 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep5 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep6 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep7 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep8 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vep9 ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vepA ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vepB ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vepC ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vepD ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vepE ip addr add ::1/128 dev lo
+nsenter --net=/var/run/netns/vepF ip addr add ::1/128 dev lo
+
+nsenter --net=/var/run/netns/vep0 ip link set up dev lo
+nsenter --net=/var/run/netns/vep1 ip link set up dev lo
+nsenter --net=/var/run/netns/vep2 ip link set up dev lo
+nsenter --net=/var/run/netns/vep3 ip link set up dev lo
+nsenter --net=/var/run/netns/vep4 ip link set up dev lo
+nsenter --net=/var/run/netns/vep5 ip link set up dev lo
+nsenter --net=/var/run/netns/vep6 ip link set up dev lo
+nsenter --net=/var/run/netns/vep7 ip link set up dev lo
+nsenter --net=/var/run/netns/vep8 ip link set up dev lo
+nsenter --net=/var/run/netns/vep9 ip link set up dev lo
+nsenter --net=/var/run/netns/vepA ip link set up dev lo
+nsenter --net=/var/run/netns/vepB ip link set up dev lo
+nsenter --net=/var/run/netns/vepC ip link set up dev lo
+nsenter --net=/var/run/netns/vepD ip link set up dev lo
+nsenter --net=/var/run/netns/vepE ip link set up dev lo
+nsenter --net=/var/run/netns/vepF ip link set up dev lo
diff --git a/dht/vnet/core-clean.sh b/dht/vnet/core-clean.sh
new file mode 100755
index 00000000..e905c61a
--- /dev/null
+++ b/dht/vnet/core-clean.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+cleanveths()
+{
+    ip link del ve0
+    ip link del ve1
+    ip link del ve2
+    ip link del ve3
+    ip link del ve4
+    ip link del ve5
+    ip link del ve6
+    ip link del ve7
+
+    ip link del ve8
+    ip link del ve9
+    ip link del veA
+    ip link del veB
+    ip link del veC
+    ip link del veD
+    ip link del veE
+    ip link del veF
+}
+
+set -x
+
+cleanveths
+
+rm -rf ve0 ve1 ve2 ve3 ve4 ve5 ve6 ve7 \
+       ve8 ve9 veA veB veC veD veE veF
+
+ip netns del vep0
+ip netns del vep1
+ip netns del vep2
+ip netns del vep3
+ip netns del vep4
+ip netns del vep5
+ip netns del vep6
+ip netns del vep7
+ip netns del vep8
+ip netns del vep9
+ip netns del vepA
+ip netns del vepB
+ip netns del vepC
+ip netns del vepD
+ip netns del vepE
+ip netns del vepF
diff --git a/dht/vnet/core-run.sh b/dht/vnet/core-run.sh
new file mode 100755
index 00000000..b2db5354
--- /dev/null
+++ b/dht/vnet/core-run.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+[ -L ./DHT_bootstrap ] || { echo "Missing symbolic link to DHT_bootstrap." ; exit 1 ; }
+
+rm -rf ve0 ve1 ve2 ve3 ve4 ve5 ve6 ve7 ve8 ve9 veA veB veC veD veE veF
+echo nobody > core-user
+user=$(cat core-user)
+mkdir -p ve0 ve1 ve2 ve3 ve4 ve5 ve6 ve7 ve8 ve9 veA veB veC veD veE veF
+chown $user ve0 ve1 ve2 ve3 ve4 ve5 ve6 ve7 ve8 ve9 veA veB veC veD veE veF
+
+rm -f core-count
+echo detach > core-detached
+
+set -x
+
+screen -S core-test -s ./core-screen-shell.sh -c core-detached
+sleep 3
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
+sleep 0.5
+screen -S core-test -X screen
diff --git a/dht/vnet/core-screen-shell.sh b/dht/vnet/core-screen-shell.sh
new file mode 100755
index 00000000..012c8540
--- /dev/null
+++ b/dht/vnet/core-screen-shell.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+digit=$1
+[ -z "$digit" ] && {
+	touch core-count
+	count=$(cat core-count)
+	count=${count:-(-1)}
+	count=$(( $count + 1 ))
+	echo $count > core-count
+	digit=$(printf '%X' $count)
+	user=$(cat core-user)
+	(
+		cd ve$digit
+		port=$(( 33400 + $count ))
+		echo nsenter --net=/var/run/netns/vep$digit chpst -u $user ../$0 $digit $port > cmd0
+		exec nsenter --net=/var/run/netns/vep$digit chpst -u $user ../$0 $digit $port
+		exit 1
+	)
+}
+port=$2
+
+addr=$(ip -o address show dev vep$digit | sed -n 's#.* inet \([^ /]*\).*#\1#p')
+echo $addr
+pwd
+whoami
+# Usage (connected)  : ./DHT_bootstrap [--ipv4|--ipv6] IP PORT KEY
+# Usage (unconnected): ./DHT_bootstrap [--ipv4|--ipv6]
+
+if [ "$digit" = 0 ]
+then
+	echo $$ > pid
+	echo ../DHT_bootstrap > cmd.txt
+	echo $addr > addr.txt
+	{
+		sleep 0.5
+		echo IP: $addr >> PUBLIC_ID.txt
+	} &
+	exec ../DHT_bootstrap
+else
+	vars='{
+	if( boot_key == "" ) { boot_key=$0 ; print("boot_key=" boot_key) }
+	else if( $1 == "Port:" ) print("boot_port=" $2);
+	else if( $1 == "IP:" ) print("boot_ip=" $2);
+	}'
+	boot_ip=
+	boot_port=
+	boot_key=
+	awk "$vars" ../ve0/PUBLIC_ID.txt > vars.txt 2>&1
+	. vars.txt
+	echo ../DHT_bootstrap $boot_ip $boot_port $boot_key > cmd.txt
+	echo $$ > pid
+	echo $addr > addr.txt
+	{
+		sleep 0.5
+		echo IP: $addr >> PUBLIC_ID.txt
+	} &
+	exec ../DHT_bootstrap $boot_ip $boot_port $boot_key
+fi
+sleep 30
diff --git a/dht/vnet/run.sh b/dht/vnet/run.sh
index 0189b6b7..16854026 100755
--- a/dht/vnet/run.sh
+++ b/dht/vnet/run.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-[ -L ./dhtd ] || ( echo "Missing symbolic link to your build: ./dhtd" ; exit 1 )
+[ -L ./dhtd ] || { echo "Missing symbolic link to your build: ./dhtd" ; exit 1; }
 
 mkdir -p ep0 ep1 ep2 ep3 ep4 ep5 ep6 ep7 \
          ep8 ep9 epA epB epC epD epE epF
-- 
cgit v1.2.3