tor.sh: initial vomit

1 files changed, 80 insertions, 0 deletions

diff --git a/boot/tor.sh b/boot/tor.sh
new file mode 100755
index 00000000..d257e955
--- /dev/null
+++ b/boot/tor.sh
@@ -0,0 +1,80 @@
+#!/bin/sh
+set -efu
+msg() { printf "$@\n" >&2 ;}
+info()   { msg "** $@" ;}
+error()  { msg "!! $@" ;}
+exists(){ type "$1" >/dev/null 2>/dev/null; }
+get_hostname(){
+  # finds the current hostname
+  #   if ENV HOSTN is set echo $HOSTN
+
+  if [ -n "${HOSTN:-}" ] ;     then printf "${HOSTN:-}" 
+  elif exists hostname ;       then printf "${HOSTNAME:-$(hostname)}"
+  elif exists uci    ;         then printf "$(uci get system.@system[0].hostname)"
+  elif [ -e /etc/hostname ]   ;then printf "$(cat /etc/hostname)"
+  else                              printf "unknown"
+  fi
+}
+
+anytelnet(){
+  # find Telnet or similar
+  # requires exist
+  # if env TELNET is set, will be trying to run this 
+  if [ -e "${TELNET:-does_not_exist}" ]; then
+    info"Will be using $TELNET as Telnet Client"
+  elif exists telnet >/dev/null;then
+    TELNET="`command -v telnet`"
+  elif exists nc >/dev/null;then
+    TELNET="`command -v nc`"
+  elif exists netcat >/dev/null;then
+    TELNET="`command -v netcat`"
+  elif exists busybox >/dev/null;then
+    TELNET="`command -v busybox` telnet"
+  else
+   error "Cannot find telnet binary, please install either telnet-client or busybox or netcat or provided TELNET environment.\nbailing out!" 
+    return 1
+  fi
+  $TELNET $@
+}
+
+send_irc(){
+  to_dots(){ while read line; do printf .; done;}
+  ## reads from stdin, writes to IRC
+  ##
+  ## requires func: exists() anytelnet()
+  if [ -z "${HOSTN:-}" ]; then
+    HOSTN="$(get_hostname)"
+    info "no HOSTN given, using $HOSTN instead"
+  fi
+  IRCCHANNEL=${IRCCHANNEL:-"#krebs_incoming"}
+  IRCSERVER=${IRCSERVER:-"irc.freenode.net"}
+  IRCPORT=${IRCPORT:-6667}
+  NICK="${HOSTN}_$(head /dev/urandom | tr -dc "0123456789" | head -c3)"
+  info "starting irc connect as $NICK"
+  (   echo "NICK $NICK";
+      echo "USER $NICK $IRCSERVER bla : $NICK";
+      echo "JOIN $IRCCHANNEL";
+      sleep 23;
+      while read line; do echo "PRIVMSG $IRCCHANNEL :$line";sleep 1;done
+      sleep 5; ) | anytelnet $IRCSERVER $IRCPORT 2>/dev/null | to_dots
+}
+
+# can be set via env:
+# torrc              - path to torrc (default: /etc/tor/torrc )
+# hidden_service_dir - path to hidden service (default: /var/lib/tor/hidden_service/ )
+
+torrc=${torrc:-/etc/tor/torrc}
+hidden_service_dir=${hidden_service_dir:-/var/lib/tor/hidden_service/}
+
+test -w "$torrc" || ( error "$torrc is not writable!"; exit 1 )
+if ! grep -q '^HiddenService' "$torrc"  ;then
+    info "adding hidden service to $torrc"
+    cat >> "$torrc" << EOF
+HiddenServiceDir ${hidden_service_dir}
+HiddenServicePort 22 127.0.0.1:22
+EOF
+else
+    info "HiddenServiceDir or Port already in $torrc, skipping!"
+fi
+
+cat $hidden_service_dir/hostname | send_irc