66 lines
2.4 KiB
Bash
66 lines
2.4 KiB
Bash
IF=$(ip -4 route show default | awk '{for (i = 1; i < NF; i++) if ($i == "dev") { print $(i + 1); exit }}')
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[ -n "$IF" ] || refuse "no default route; this lab needs a working network"
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state_set if "$IF"
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peer_up
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ip -n lepeer addr add 10.99.0.3/24 dev le-peer 2>/dev/null || true
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if is_rhel; then
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pkg_install firewalld nftables
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pkg_installed firewalld && systemctl is-active --quiet firewalld && state_set firewalld-was-active 1
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tar -C /etc -cf "$LAB_STATE/firewalld.tar" firewalld
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systemctl enable --now --quiet firewalld
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firewall-cmd -q --state
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z=$(firewall-cmd --get-zone-of-interface="$IF" 2>/dev/null || firewall-cmd --get-default-zone)
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# The starting point: SSH allowed, HTTP not.
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firewall-cmd -q --permanent --zone="$z" --query-service=ssh || firewall-cmd -q --permanent --zone="$z" --add-service=ssh
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firewall-cmd -q --permanent --zone="$z" --query-service=http && firewall-cmd -q --permanent --zone="$z" --remove-service=http
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firewall-cmd -q --reload
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else
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ufw status | grep -q 'Status: active' && state_set ufw-was-active 1
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tar -C /etc -cf "$LAB_STATE/ufw.tar" ufw default/ufw
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if [ -n "$(state_get ufw-was-active)" ]; then
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ufw --force reset >/dev/null
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ufw --force disable >/dev/null
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fi
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fi
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# Web services on 8080 and 9000.
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mkdir -p /srv/le-app /usr/local/lib/le-lab
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echo 'Lab app' >/srv/le-app/index.html
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cat >/usr/local/lib/le-lab/httpd.py <<'Y'
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# A static web server like "python3 -m http.server PORT --directory DIR",
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# without its reverse DNS lookup of the address, which can take seconds.
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import argparse, functools, http.server, socketserver
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ap = argparse.ArgumentParser()
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ap.add_argument("port", type=int)
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ap.add_argument("--bind", default="")
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ap.add_argument("--directory", default=".")
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a = ap.parse_args()
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class Server(http.server.ThreadingHTTPServer):
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def server_bind(self):
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socketserver.TCPServer.server_bind(self)
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self.server_name, self.server_port = self.server_address[:2]
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handler = functools.partial(http.server.SimpleHTTPRequestHandler, directory=a.directory)
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Server((a.bind, a.port), handler).serve_forever()
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Y
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for p in 8080 9000; do
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cat >/etc/systemd/system/le-lab-app$p.service <<Y
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[Unit]
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Description=Practice lab web service on port $p
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After=network.target
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[Service]
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ExecStart=/usr/bin/python3 /usr/local/lib/le-lab/httpd.py $p --directory /srv/le-app
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[Install]
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WantedBy=multi-user.target
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Y
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done
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systemctl daemon-reload
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systemctl enable --now --quiet le-lab-app8080.service le-lab-app9000.service
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