tuto3: Use the entire /etc directory for mainrouter

This is to avoid Ansible complaining about Resource busy files

tuto3.yml

@@ -144,8 +144,7 @@ services:
       - type: cgroup
         options: ["rw","nosuid","noexec","nodev","relatime"]
     binds:
-      - /var/lib/adlin/wrt-config:/etc/config
-      - /etc/rshadow:/etc/shadow
+      - /var/lib/adlin/wrt-etc:/etc
       - /etc/rinittab:/etc/inittab
       - /etc/hosts:/etc/hosts:ro
       - /etc/dresolv.conf:/etc/resolv.conf
@@ -554,23 +553,19 @@ files:
   - path: etc/init.d/014-default-router-config
     contents: |
       #!/bin/sh
-      [ -d /var/lib/adlin/wrt-config ] || {
-          mkdir -p /var/lib/adlin/wrt-config
-          cp /containers/services/mainrouter/lower/etc/config/* /var/lib/adlin/wrt-config/
+      [ -d /var/lib/adlin/wrt-etc ] || {
+          mkdir -p /var/lib/adlin/wrt-etc
+          cp -r /containers/services/mainrouter/lower/etc/* /var/lib/adlin/wrt-etc/
 
           # Configured by students
-          rm -f /var/lib/adlin/wrt-config/firewall
+          rm -f /var/lib/adlin/wrt-etc/config/firewall
+          touch /var/lib/adlin/wrt-etc/config/firewall
 
           # Avoid listening on IPv6
-          sed -r -i '/list\s+listen_http\s+\[::\]:80/d;/list\s+listen_http\s+\[::\]:443/d' /var/lib/adlin/wrt-config/uhttpd
-
-          TUNPVKEY=$(sed 's/^.*PrivateKey = //p;d' adlin.conf /var/lib/adlin/wireguard/adlin.conf)
-          TUNIP=$(sed 's/^.*MyIPv6=//p;d' /var/lib/adlin/wireguard/adlin.conf)
-          SRVIP=$(echo "${TUNIP}" | sed "s#:[^:/]*/.*\$#:1/96#")
-          WKSIP=$(echo "${TUNIP}" | sed "s#:[^:/]*/.*\$#1::1/96")
+          sed -r -i '/list\s+listen_http\s+\[::\]:80/d;/list\s+listen_https\s+\[::\]:443/d' /var/lib/adlin/wrt-etc/config/uhttpd
 
           # Configure networking
-          cat > /etc/config/network <<EOF
+          cat > /var/lib/adlin/wrt-etc/config/network <<EOF
 
       config interface 'loopback'
           option ifname 'lo'
@@ -583,7 +578,37 @@ files:
           option proto 'dhcp'
 
       EOF
-          [ -f /var/lib/adlin/wireguard/adlin.conf ] && cat >> /etc/config/network <<EOF
+      }
+
+      [ -e /var/lib/adlin/wrt-config ] && {
+        mv /var/lib/adlin/wrt-config/* /var/lib/adlin/wrt-etc/config/
+        rmdir /var/lib/adlin/wrt-config
+      }
+      [ -f /var/lib/adlin/wrt-firewall.user ] && mv /var/lib/adlin/wrt-firewall.user /var/lib/adlin/wrt-etc/firewall.user
+      [ -f /var/lib/adlin/wrt-sysctl.conf ] && mv /var/lib/adlin/wrt-sysctl.conf /var/lib/adlin/wrt-etc/sysctl.conf
+
+      # Ensure custom rules are applied
+      grep -q /etc/firewall.user /var/lib/adlin/wrt-etc/config/firewall || cat >> /var/lib/adlin/wrt-etc/config/firewall <<EOF
+      config include
+              option path /etc/firewall.user
+      EOF
+
+      [ -f /var/lib/adlin/wireguard/adlin.conf ] && /usr/bin/update-wg-conf
+    mode: "0755"
+
+  - path: usr/bin/update-wg-conf
+    contents: |
+      #!/bin/sh
+      TUNPVKEY=$(sed 's/^.*PrivateKey = //p;d' /var/lib/adlin/wireguard/adlin.conf)
+      TUNIP=$(sed 's/^.*MyIPv6=//p;d' /var/lib/adlin/wireguard/adlin.conf)
+      SRVIP=$(echo "${TUNIP}" | sed "s#:[^:/]*/.*\$#:1/96#")
+      WKSIP=$(echo "${TUNIP}" | sed "s#:[^:/]*/.*\$#1::1/96#")
+
+      grep -q wireguard /var/lib/adlin/wrt-etc/config/network && {
+          sed -i -r "s#list addresses '[^']+'#list addresses '${TUNIP}'#;s#option private_key '[^']+'#option private_key '${TUNPVKEY}'#;" /var/lib/adlin/wrt-etc/config/network
+      }
+
+      grep -q wireguard /var/lib/adlin/wrt-etc/config/network || cat >> /var/lib/adlin/wrt-etc/config/network <<EOF
       config interface 'wg0'
           option proto 'wireguard'
           option force_link '1'
@@ -611,7 +636,6 @@ files:
           option interface 'wg0'
 
       EOF
-      }
     mode: "0755"
 
   - path: etc/init.d/014-get-ssh-keys
@@ -649,10 +673,10 @@ files:
   - path: /etc/init.d/800-rw-passwd.sh
     contents: |
       #!/bin/sh
-      #sed -ri '/^root/s@^.*$@root:$6$QNuPvO59Xk4UO3le$3P0V2ef6dHlKgO1FHsKcPPgOvL.YeCOPFqfIVTtpYn5eEn3xkgGYeM1RMCQ9l/eTc6rRc.l.WeRe1iJVznVGj/:17968:0:99999:7:::@' /containers/services/mainrouter/rootfs/etc/shadow
-      #cp /etc/services /containers/services/mainrouter/rootfs/etc/services
-      mkdir /containers/services/mainrouter/rootfs/root/.ssh
-      [ -f /var/lib/adlin/authorized_keys ] && cp /var/lib/adlin/authorized_keys /containers/services/mainrouter/rootfs/root/.ssh/authorized_keys
+      sed -ri '/^root/s@^root:x:.*$@root:$1$ChIJgCib$1IYTTG.wKCXqbo1RMEQCc0:18706:0:99999:7:::@' /var/lib/adlin/wrt-etc/shadow
+      mkdir -p /var/lib/adlin/wrt-etc/dropbear/
+      [ -f /var/lib/adlin/authorized_keys ] && ! [ -f /var/lib/adlin/wrt-etc/dropbear/authorized_keys ] && cp /var/lib/adlin/authorized_keys /var/lib/adlin/wrt-etc/dropbear/authorized_keys
+
       for svc in sshd-wks-rh1 sshd-wks-dg1
       do
           mkdir -p /containers/services/${svc}/rootfs/root/.ssh