--- /dev/null
+#
+# Copyright (C) 2006-2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=xl2tpd
+PKG_VERSION:=1.3.15
+PKG_RELEASE:=3
+PKG_MAINTAINER:=Yousong Zhou <yszhou4tech@gmail.com>
+PKG_LICENSE:=GPL-2.0
+PKG_LICENSE_FILES:=LICENSE
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://github.com/xelerance/xl2tpd.git
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE_VERSION:=v$(PKG_VERSION)
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_MIRROR_HASH:=e12232fef216a1cb5b74f990616aff1dd851c62812ef54658a330629823c0996
+
+PKG_INSTALL:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/xl2tpd
+ SECTION:=net
+ CATEGORY:=Network
+ TITLE:=An L2TP (Layer 2 Tunneling Protocol) daemon
+ URL:=http://www.xelerance.com/software/xl2tpd/
+ SUBMENU:=VPN
+ DEPENDS:=+ppp-mod-pppol2tp +resolveip
+endef
+
+define Package/xl2tpd/description
+l2tpd is the open source implementation of the L2TP tunneling protocol (RFC2661).
+It does implement both LAC and LNS role in a L2TP networking architecture. The
+main goal of this protocol is to tunnel PPP frame trough an IP network.
+endef
+
+ifneq (0,0)
+ # debugging options from Makefile of xl2tpd package
+ EXTRA_CFLAGS += \
+ -DDEBUG_ZLB \
+ -DDEBUG_HELLO \
+ -DDEBUG_CLOSE \
+ -DDEBUG_FLOW \
+ -DDEBUG_FILE \
+ -DDEBUG_AAA \
+ -DDEBUG_PAYLOAD \
+ -DDEBUG_CONTROL \
+ -DDEBUG_PPPD \
+ -DDEBUG_HIDDEN \
+ -DDEBUG_ENTROPY \
+ -DDEBUG_CONTROL_XMIT \
+ -DDEBUG_MAGIC \
+ -DDEBUG_FLOW_MORE \
+ -DDEBUG_AUTH
+endif
+
+define Package/xl2tpd/conffiles
+/etc/xl2tpd/xl2tpd.conf
+/etc/xl2tpd/xl2tp-secrets
+/etc/ppp/options.xl2tpd
+endef
+
+define Package/xl2tpd/install
+ $(INSTALL_DIR) $(1)/usr/sbin
+ $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/local/sbin/xl2tpd $(1)/usr/sbin/
+ $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/local/sbin/xl2tpd-control $(1)/usr/sbin/
+
+ $(INSTALL_DIR) $(1)/etc/init.d
+ $(INSTALL_BIN) ./files/xl2tpd.init $(1)/etc/init.d/xl2tpd
+
+ $(INSTALL_DIR) $(1)/etc/xl2tpd
+ $(INSTALL_DATA) ./files/xl2tpd.conf $(1)/etc/xl2tpd/
+ $(INSTALL_CONF) ./files/xl2tp-secrets $(1)/etc/xl2tpd/
+
+ $(INSTALL_DIR) $(1)/etc/ppp
+ $(INSTALL_DATA) ./files/options.xl2tpd $(1)/etc/ppp/
+
+ $(INSTALL_DIR) $(1)/lib/netifd/proto
+ $(INSTALL_BIN) ./files/l2tp.sh $(1)/lib/netifd/proto
+endef
+
+$(eval $(call BuildPackage,xl2tpd))
--- /dev/null
+# OpenWrt Package for xl2tpd
+
+xl2tpd is a development from the original l2tpd package originally written by
+Mark Spencer, subsequently forked by Scott Balmos and David Stipp, inherited
+by Jeff McAdams, modified substantially by Jacco de Leeuw and then forked
+again by Xelerance (after it was abandoned by l2tpd.org).
+
+## Rationale for inclusion in OpenWrt
+
+l2tpd has some serious alignment problems on RISC platforms. It also runs
+purely in userspace.
+
+Some of the features added in this fork include:
+
+1. IPSec SA reference tracking inconjunction with openswan's IPSec transport
+ mode, which adds support for multiple clients behind the same NAT router
+ and multiple clients on the same internal IP behind different NAT routers.
+
+2. Support for the pppol2tp kernel mode L2TP.
+
+3. Alignment and endian problems resolved.
+
+hcg
+
+## UCI options
+
+`server` takes the form `host[:port]` with port defaults to `1701`. It
+specifies the l2tp server's address.
+
+`checkup_interval` tells netifd to check after that many seconds since last
+setup attempt to see if the interface is up. If not it should issue another
+teardown/setup round to retry the negotiation. This option defaults to 0 and
+netifd will not do the check and retry.
+
+The following are generic ppp options and should have the same format and
+semantics as with other ppp-related protocols. See
+[uci/network#protocol_ppp](https://openwrt.org/docs/guide-user/network/wan/wan_interface_protocols#protocol_ppp_ppp_over_modem)
+for details.
+
+ username
+ password
+ keepalive
+ ipv6
+ mtu
+ pppd_options
--- /dev/null
+#!/bin/sh
+
+[ -x /usr/sbin/xl2tpd ] || exit 0
+
+[ -n "$INCLUDE_ONLY" ] || {
+ . /lib/functions.sh
+ . ../netifd-proto.sh
+ init_proto "$@"
+}
+
+proto_l2tp_init_config() {
+ proto_config_add_string "username"
+ proto_config_add_string "password"
+ proto_config_add_string "keepalive"
+ proto_config_add_string "pppd_options"
+ proto_config_add_boolean "ipv6"
+ proto_config_add_int "mtu"
+ proto_config_add_int "checkup_interval"
+ proto_config_add_string "server"
+ available=1
+ no_device=1
+ no_proto_task=1
+ teardown_on_l3_link_down=1
+}
+
+proto_l2tp_setup() {
+ local interface="$1"
+ local optfile="/tmp/l2tp/options.${interface}"
+ local ip serv_addr server host
+
+ json_get_var server server
+ host="${server%:*}"
+ for ip in $(resolveip -t 5 "$host"); do
+ ( proto_add_host_dependency "$interface" "$ip" )
+ serv_addr=1
+ done
+ [ -n "$serv_addr" ] || {
+ echo "Could not resolve server address" >&2
+ sleep 5
+ proto_setup_failed "$interface"
+ exit 1
+ }
+
+ # Start and wait for xl2tpd
+ if [ ! -p /var/run/xl2tpd/l2tp-control -o -z "$(pidof xl2tpd)" ]; then
+ /etc/init.d/xl2tpd restart
+
+ local wait_timeout=0
+ while [ ! -p /var/run/xl2tpd/l2tp-control ]; do
+ wait_timeout=$(($wait_timeout + 1))
+ [ "$wait_timeout" -gt 5 ] && {
+ echo "Cannot find xl2tpd control file." >&2
+ proto_setup_failed "$interface"
+ exit 1
+ }
+ sleep 1
+ done
+ fi
+
+ local ipv6 keepalive username password pppd_options mtu
+ json_get_vars ipv6 keepalive username password pppd_options mtu
+ [ "$ipv6" = 1 ] || ipv6=""
+
+ local interval="${keepalive##*[, ]}"
+ [ "$interval" != "$keepalive" ] || interval=5
+
+ keepalive="${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}}"
+ username="${username:+user \"$username\" password \"$password\"}"
+ ipv6="${ipv6:++ipv6}"
+ mtu="${mtu:+mtu $mtu mru $mtu}"
+
+ mkdir -p /tmp/l2tp
+ cat <<EOF >"$optfile"
+usepeerdns
+nodefaultroute
+ipparam "$interface"
+ifname "l2tp-$interface"
+ip-up-script /lib/netifd/ppp-up
+ipv6-up-script /lib/netifd/ppp-up
+ip-down-script /lib/netifd/ppp-down
+ipv6-down-script /lib/netifd/ppp-down
+# Don't wait for LCP term responses; exit immediately when killed.
+lcp-max-terminate 0
+$keepalive
+$username
+$ipv6
+$mtu
+$pppd_options
+EOF
+
+ xl2tpd-control add l2tp-${interface} pppoptfile=${optfile} lns=${server} || {
+ echo "xl2tpd-control: Add l2tp-$interface failed" >&2
+ proto_setup_failed "$interface"
+ exit 1
+ }
+ xl2tpd-control connect l2tp-${interface} || {
+ echo "xl2tpd-control: Connect l2tp-$interface failed" >&2
+ proto_setup_failed "$interface"
+ exit 1
+ }
+}
+
+proto_l2tp_teardown() {
+ local interface="$1"
+ local optfile="/tmp/l2tp/options.${interface}"
+
+ rm -f ${optfile}
+ if [ -p /var/run/xl2tpd/l2tp-control ]; then
+ xl2tpd-control remove l2tp-${interface} || {
+ echo "xl2tpd-control: Remove l2tp-$interface failed" >&2
+ }
+ fi
+ # Wait for interface to go down
+ while [ -d /sys/class/net/l2tp-${interface} ]; do
+ sleep 1
+ done
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+ add_protocol l2tp
+}
--- /dev/null
+#
+noauth
+debug
+dump
+logfd 2
+logfile /var/log/xl2tpd.log
+noccp
+novj
+novjccomp
+nopcomp
+noaccomp
+mtu 1400
+mru 1400
+require-mschap-v2
+lcp-echo-interval 20
+lcp-echo-failure 5
+connect-delay 5000
+nodefaultroute
+noipdefault
+proxyarp
--- /dev/null
+# Secrets for authenticating l2tp tunnels
+# us them secret
+# * marko blah2
+# zeus marko blah
+# * * interop
--- /dev/null
+[global]
+port = 1701
+auth file = /etc/xl2tpd/xl2tp-secrets
+access control = no
+
+;[lns default]
+;exclusive = yes
+;ip range = 192.168.254.202-192.168.254.210
+;lac = 10.0.1.2
+;hidden bit = no
+;local ip = 192.168.254.200
+;length bit = yes
+;refuse authentication = yes
+;name = VersaLink
+;ppp debug = yes
+;pppoptfile = /etc/ppp/options.xl2tpd
+
+;[lac left]
+;lns = 10.0.1.2
+;refuse authentication = yes
+;name = VersaLink
+;ppp debug = yes
+;pppoptfile = /etc/ppp/options.xl2tpd
--- /dev/null
+;
+; Sample l2tpd configuration file
+;
+; This example file should give you some idea of how the options for l2tpd
+; should work. The best place to look for a list of all options is in
+; the source code itself, until I have the time to write better documetation :)
+; Specifically, the file "file.c" contains a list of commands at the end.
+;
+; You most definitely don't have to spell out everything as it is done here
+;
+; [global] ; Global parameters:
+; port = 1701 ; * Bind to port 1701
+; auth file = /etc/xl2tpd/xl2tp-secrets ; * Where our challenge secrets are
+; access control = yes ; * Refuse connections without IP match
+; rand source = dev ; Source for entropy for random
+; ; numbers, options are:
+; ; dev - reads of /dev/urandom
+; ; sys - uses rand()
+; ; egd - reads from egd socket
+; ; egd is not yet implemented
+;
+; [lns default] ; Our fallthrough LNS definition
+; exclusive = no ; * Only permit one tunnel per host
+; ip range = 192.168.0.1-192.168.0.20 ; * Allocate from this IP range
+; no ip range = 192.168.0.3-192.168.0.9 ; * Except these hosts
+; ip range = 192.168.0.5 ; * But this one is okay
+; ip range = lac1-lac2 ; * And anything from lac1 to lac2's IP
+; lac = 192.168.1.4 - 192.168.1.8 ; * These can connect as LAC's
+; no lac = untrusted.marko.net ; * This guy can't connect
+; hidden bit = no ; * Use hidden AVP's?
+; local ip = 192.168.1.2 ; * Our local IP to use
+; length bit = yes ; * Use length bit in payload?
+; require chap = yes ; * Require CHAP auth. by peer
+; refuse pap = yes ; * Refuse PAP authentication
+; refuse chap = no ; * Refuse CHAP authentication
+; refuse authentication = no ; * Refuse authentication altogether
+; require authentication = yes ; * Require peer to authenticate
+; unix authentication = no ; * Use /etc/passwd for auth.
+; name = myhostname ; * Report this as our hostname
+; ppp debug = no ; * Turn on PPP debugging
+; pppoptfile = /etc/ppp/options.xl2tpd.lns ; * ppp options file
+; call rws = 10 ; * RWS for call (-1 is valid)
+; tunnel rws = 4 ; * RWS for tunnel (must be > 0)
+; flow bit = yes ; * Include sequence numbers
+; challenge = yes ; * Challenge authenticate peer ;
+;
+; [lac marko] ; Example VPN LAC definition
+; lns = lns.marko.net ; * Who is our LNS?
+; lns = lns2.marko.net ; * A backup LNS (not yet used)
+; redial = yes ; * Redial if disconnected?
+; redial timeout = 15 ; * Wait n seconds between redials
+; max redials = 5 ; * Give up after n consecutive failures
+; hidden bit = yes ; * User hidden AVP's?
+; local ip = 192.168.1.1 ; * Force peer to use this IP for us
+; remote ip = 192.168.1.2 ; * Force peer to use this as their IP
+; length bit = no ; * Use length bit in payload?
+; require pap = no ; * Require PAP auth. by peer
+; require chap = yes ; * Require CHAP auth. by peer
+; refuse pap = yes ; * Refuse PAP authentication
+; refuse chap = no ; * Refuse CHAP authentication
+; refuse authentication = no ; * Refuse authentication altogether
+; require authentication = yes ; * Require peer to authenticate
+; name = marko ; * Report this as our hostname
+; ppp debug = no ; * Turn on PPP debugging
+; pppoptfile = /etc/ppp/options.xl2tpd.marko ; * ppp options file for this lac
+; call rws = 10 ; * RWS for call (-1 is valid)
+; tunnel rws = 4 ; * RWS for tunnel (must be > 0)
+; flow bit = yes ; * Include sequence numbers
+; challenge = yes ; * Challenge authenticate peer
+;
+; [lac cisco] ; Another quick LAC
+; lns = cisco.marko.net ; * Required, but can take from default
+; require authentication = yes
--- /dev/null
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2006-2015 OpenWrt.org
+
+START=60
+USE_PROCD=1
+
+BIN=xl2tpd
+RUN_D="/var/run/xl2tpd"
+PID_F="/var/run/xl2tpd.pid"
+
+start_service() {
+ rm -rf "$RUN_D"
+ mkdir -p "$RUN_D"
+
+ procd_open_instance
+ procd_set_param command $BIN -D -l -p "$PID_F"
+ procd_set_param respawn
+ procd_close_instance
+}
+
+stop_service() {
+ rm -rf "$RUN_D"
+ rm -rf "$PID_F"
+}
--- /dev/null
+From 1d11b2432b6e0f99b9f08c65b51292e1a2251975 Mon Sep 17 00:00:00 2001
+From: Yousong Zhou <zhouyousong@yunionyun.com>
+Date: Fri, 18 Oct 2019 11:29:03 +0000
+Subject: [PATCH] Skip building pfc
+
+It can cause build failure, see [1]
+
+ [1] https://github.com/openwrt/packages/issues/10270
+---
+ Makefile | 15 +++------------
+ 1 file changed, 3 insertions(+), 12 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 9927715..8a3eecd 100644
+--- a/Makefile
++++ b/Makefile
+@@ -115,10 +115,10 @@ BINDIR?=$(DESTDIR)${PREFIX}/bin
+ MANDIR?=$(DESTDIR)${PREFIX}/share/man
+
+
+-all: $(EXEC) pfc $(CONTROL_EXEC)
++all: $(EXEC) $(CONTROL_EXEC)
+
+ clean:
+- rm -f $(OBJS) $(EXEC) pfc.o pfc $(CONTROL_EXEC)
++ rm -f $(OBJS) $(EXEC) $(CONTROL_EXEC)
+
+ $(EXEC): $(OBJS) $(HDRS)
+ $(CC) $(LDFLAGS) -o $@ $(OBJS) $(LDLIBS)
+@@ -126,10 +126,6 @@ $(EXEC): $(OBJS) $(HDRS)
+ $(CONTROL_EXEC): $(CONTROL_SRCS)
+ $(CC) $(CFLAGS) $(LDFLAGS) $(CONTROL_SRCS) -o $@
+
+-pfc:
+- $(CC) $(CFLAGS) -c contrib/pfc.c
+- $(CC) $(LDFLAGS) -o pfc pfc.o -lpcap $(LDLIBS)
+-
+ romfs:
+ $(ROMFSINST) /bin/$(EXEC)
+
+@@ -142,7 +138,7 @@ packagingprep:
+ sed -i "s/Version: .*/Version: ${XL2TPDBASEVERSION}/" packaging/*/*.spec
+ sed -i "s/PKG_VERSION:=.*/PKG_VERSION:=${XL2TPDBASEVERSION}/" packaging/openwrt/Makefile
+
+-install: ${EXEC} pfc ${CONTROL_EXEC}
++install: ${EXEC} ${CONTROL_EXEC}
+ install -d -m 0755 ${SBINDIR}
+ install -m 0755 $(EXEC) ${SBINDIR}/$(EXEC)
+ install -d -m 0755 ${MANDIR}/man5
+@@ -151,11 +147,6 @@ install: ${EXEC} pfc ${CONTROL_EXEC}
+ install -m 0644 doc/xl2tpd-control.8 ${MANDIR}/man8/
+ install -m 0644 doc/xl2tpd.conf.5 doc/l2tp-secrets.5 \
+ ${MANDIR}/man5/
+- # pfc
+- install -d -m 0755 ${BINDIR}
+- install -m 0755 pfc ${BINDIR}/pfc
+- install -d -m 0755 ${MANDIR}/man1
+- install -m 0644 contrib/pfc.1 ${MANDIR}/man1/
+ # control exec
+ install -d -m 0755 ${SBINDIR}
+ install -m 0755 $(CONTROL_EXEC) ${SBINDIR}/$(CONTROL_EXEC)
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