From 69e576308aefd92d8af7a5bcb060e5929d7becb7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= <anton@sijanec.eu>
Date: Sat, 7 Oct 2023 14:27:44 +0200
Subject: skripti

---
 skripti/irc_antispam.sh              | 44 ++++++++++++++++++++++++++++++++++
 skripti/java_package_manager.sh      | 46 ++++++++++++++++++++++++++++++++++++
 skripti/on_log_line.sh               |  3 +++
 skripti/remove_ipv6_on_disconnect.sh | 10 ++++++++
 4 files changed, 103 insertions(+)
 create mode 100755 skripti/irc_antispam.sh
 create mode 100755 skripti/java_package_manager.sh
 create mode 100644 skripti/on_log_line.sh
 create mode 100755 skripti/remove_ipv6_on_disconnect.sh

diff --git a/skripti/irc_antispam.sh b/skripti/irc_antispam.sh
new file mode 100755
index 0000000..4e7a513
--- /dev/null
+++ b/skripti/irc_antispam.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+set -uexo pipefail
+p=`rev <<<$0 | cut -d/ -f1 | rev`
+umask 0007
+d=`mktemp -p "" -d $p.XXX`
+trap "rm -r $d" EXIT
+mkfifo $d/s
+mkfifo $d/c
+tail -f $d/s | nc $1 6667 > $d/c &
+u=dont_send_me_msg_
+echo "USER $u `hostname` $1 :IRC Antispam bot. Do not PM, you will get G-Lined." > $d/s
+echo "NICK antispam" > $d/s
+echo "OPER $OPER" > $d/s
+c="antispam_chan_dont_join_youll_get_gline_"
+j="$c$RANDOM"
+echo "JOIN #$j" > $d/s
+while read l
+do
+	echo "$l"
+	case `cut -d\  -f2 <<<"$l"` in
+		433)
+			echo "NICK bot$RANDOM" > $d/s
+			echo "OPER $OPER" > $d/s
+			echo "PART #$j" > $d/s
+			j="$c$RANDOM"
+			echo "JOIN #$j" > $d/s
+			;;
+		PRIVMSG|JOIN|PART)
+			if grep -v $u <<<"$l"
+			then
+				i=`cut -d\  -f1 <<<"$l" | cut -d@ -f2`
+				echo "GLINE *@$i 13376969 :You were G-Lined for spamming. Appeal via email to anton@sijanec.eu" > $d/s
+			fi
+			;;
+	esac
+	case `cut -d\  -f1 <<<"$l"` in
+		PING)
+			echo "PONG `cut -d\  -f2 <<<$l`" > $d/s
+			echo "PART #$j" > $d/s
+			j="$c$RANDOM"
+			echo "JOIN #$j" > $d/s
+			;;
+	esac
+done < $d/c
diff --git a/skripti/java_package_manager.sh b/skripti/java_package_manager.sh
new file mode 100755
index 0000000..b445abb
--- /dev/null
+++ b/skripti/java_package_manager.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+set -xeuo pipefail
+clean () {
+	sed -n '/^# java_package_manager.begin$/,/^# java_package_manager.end$/{/^# java_package_manager.begin$/!{/^# java_package_manager.end$/!p}}' .gitignore | while read l
+	do
+		rd=`rev <<<$l | cut -d/ -f2- | rev`
+		rm $l
+		[ `ls $rd | wc -l` -eq 0 ] && rmdir $rd
+
+	done
+	sed -i '/^# java_package_manager.begin$/,/^# java_package_manager.end$/d' .gitignore
+}
+case $1 in
+	i*|I*)
+		[ -f java_package_manager.txt ] || { echo no java_package_manager.txt, refusing to run; exit 2; }
+		if grep '^# java_package_manager.begin$' .gitignore > /dev/null
+		then
+			echo was already installed. cleaning before reinstalling.
+			clean
+		fi
+		echo '# java_package_manager.begin' >> .gitignore
+		c=0
+		grep -v '^#' java_package_manager.txt | while read l
+		do
+			c=$(($c+1))
+			[ $c -eq 1 ] && { d=$l; continue; }
+			find $l -type f | while read line
+			do
+				dst=`sed s,$l,$d, <<<$line`
+				dstd=`rev <<<$dst | cut -d/ -f2- | rev`
+				[ -d $dstd ] || mkdir -p $dstd 
+				cp --no-clobber $line $dst
+				echo $dst >> .gitignore
+			done
+
+		done
+		echo '# java_package_manager.end' >> .gitignore
+		;;
+	c*|C*)
+		clean
+		;;
+	*)
+		echo wrong option
+		exit 1
+		;;
+esac
diff --git a/skripti/on_log_line.sh b/skripti/on_log_line.sh
new file mode 100644
index 0000000..db57781
--- /dev/null
+++ b/skripti/on_log_line.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+# ./on_log_line.sh /var/log/syslog 
+tail -f $1
diff --git a/skripti/remove_ipv6_on_disconnect.sh b/skripti/remove_ipv6_on_disconnect.sh
new file mode 100755
index 0000000..a227688
--- /dev/null
+++ b/skripti/remove_ipv6_on_disconnect.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+set -xe
+tail --follow=name --retry /var/log/syslog | grep "default route via" | while read l
+do
+	iface=`cut -d\  -f6 <<<"$l" | sed s/://`
+	ip -6 route | grep $iface | while read line
+	do
+		ip route del $line
+	done
+done
-- 
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