From 135aa3eece1561eab68f57f39b99da72ba34099c Mon Sep 17 00:00:00 2001
From: Daniel Clavijo Coca <dclavijo@opennebula.io>
Date: Thu, 23 Mar 2023 15:56:36 -0600
Subject: [PATCH] F OpenNebula/one-context-linux#281: ONEGATE Proxy static
 automatic static routing

---
 .../one-context.d/loc-10-network.d/functions  |  5 ++++
 .../one-context.d/loc-10-network.d/netcfg-bsd | 23 ++++++++++----
 .../loc-10-network.d/netcfg-interfaces        |  6 ++++
 .../loc-10-network.d/netcfg-netplan           | 30 ++++++++++++-------
 .../loc-10-network.d/netcfg-networkd          | 12 +++++++-
 .../one-context.d/loc-10-network.d/netcfg-nm  |  7 +++++
 .../loc-10-network.d/netcfg-scripts           |  7 +++++
 7 files changed, 73 insertions(+), 17 deletions(-)

diff --git a/src/etc/one-context.d/loc-10-network.d/functions b/src/etc/one-context.d/loc-10-network.d/functions
index 014caec..561c65e 100644
--- a/src/etc/one-context.d/loc-10-network.d/functions
+++ b/src/etc/one-context.d/loc-10-network.d/functions
@@ -597,4 +597,9 @@ get_route_info() {
     fi
 
     echo "$dst $gw $iface"
+}
+
+# 0 if https://en.wikipedia.org/wiki/Link-local_address
+is_link_local() {
+    [[ $1 == "169.254."* ]]
 }
\ No newline at end of file
diff --git a/src/etc/one-context.d/loc-10-network.d/netcfg-bsd b/src/etc/one-context.d/loc-10-network.d/netcfg-bsd
index b720f0a..60103ea 100644
--- a/src/etc/one-context.d/loc-10-network.d/netcfg-bsd
+++ b/src/etc/one-context.d/loc-10-network.d/netcfg-bsd
@@ -124,15 +124,15 @@ gen_iface_conf()
     fi
 
     # Add static routes
-    if [ -n "${ROUTES}" ]; then
-        # static_routes="lan mumoffice foo"
-        # route_lan="-net 192.168.1.0/24 192.168.1.254"
-        # route_mumoffice="-net 10.0.0.0/8 10.30.110.5"
-        # route_foo="-host 169.254.1.1 -iface lo0"
+    # static_routes="lan mumoffice foo"
+    # route_lan="-net 192.168.1.0/24 192.168.1.254"
+    # route_mumoffice="-net 10.0.0.0/8 10.30.110.5"
+    # route_foo="-host 169.254.1.1 -iface lo0"
+    route_names=""
 
+    if [ -n "${ROUTES}" ]; then
         IFS=',' read -r -a routes <<< "$ROUTES"
 
-        route_names=""
         routes_conf=()
 
         for index in "${!routes[@]}"
@@ -160,6 +160,17 @@ gen_iface_conf()
         done
 
     fi
+
+    # Add ONEGATE Proxy static route
+    if is_link_local "${ONEGATE_ENDPOINT}"; then
+        route_name="onegateproxy"
+
+        sed -i "s/${route_names}/${route_names} ${route_name}/g" "$routes_conf_path"
+        # ip route replace 169.254.16.9/32 via eth0
+        route_conf="route_${route_name}=\"-host ${ONEGATE_ENDPOINT} -iface ${dev}\""
+
+        echo -e "$route_conf\n" >> $routes_conf_path
+    fi
 }
 
 gen_dhcp_conf()
diff --git a/src/etc/one-context.d/loc-10-network.d/netcfg-interfaces b/src/etc/one-context.d/loc-10-network.d/netcfg-interfaces
index 833f858..a5c1536 100644
--- a/src/etc/one-context.d/loc-10-network.d/netcfg-interfaces
+++ b/src/etc/one-context.d/loc-10-network.d/netcfg-interfaces
@@ -173,6 +173,12 @@ EOT
 
     fi
 
+    # Add ONEGATE Proxy static route
+    if is_link_local "${ONEGATE_ENDPOINT}"; then
+        # ip route replace 169.254.16.9/32 via eth0
+        echo "  up ip route replace ${ONEGATE_ENDPOINT}/32 via ${dev}"
+    fi
+
     if [ -n "$mtu" ]; then
         echo "  mtu ${mtu}"
     fi
diff --git a/src/etc/one-context.d/loc-10-network.d/netcfg-netplan b/src/etc/one-context.d/loc-10-network.d/netcfg-netplan
index 398c310..5ebb447 100644
--- a/src/etc/one-context.d/loc-10-network.d/netcfg-netplan
+++ b/src/etc/one-context.d/loc-10-network.d/netcfg-netplan
@@ -148,29 +148,39 @@ EOT
     fi
 
     # Add static routes
-        if [ -n "${ROUTES}" ]; then
+    if [ -n "${ROUTES}" ]; then
 
-            IFS=',' read -r -a routes <<< "$ROUTES"
+        IFS=',' read -r -a routes <<< "$ROUTES"
 
-            for route in "${routes[@]}"
-            do
-                # Apply every route except the ones specified for other devices
-                if [[ "$route" == *"${dev}"* ]] || [[ "$dev" == "eth0" && "$route" != *"dev"* ]]; then
+        for route in "${routes[@]}"
+        do
+            # Apply every route except the ones specified for other devices
+            if [[ "$route" == *"${dev}"* ]] || [[ "$dev" == "eth0" && "$route" != *"dev"* ]]; then
 
-                    IFS=' ' read -r -a route_info <<< "$(get_route_info "$route")"
+                IFS=' ' read -r -a route_info <<< "$(get_route_info "$route")"
 
-                    dst=${route_info[0]}
+                dst=${route_info[0]}
                     gw=${route_info[1]}
 
         cat <<EOT
-        - to: "$dst"
-          via: "$gw"
+        - to: "${dst}"
+          via: "${gw}"
 EOT
                 fi
             done
 
         fi
 
+    # Add ONEGATE Proxy static route
+    if is_link_local "${ONEGATE_ENDPOINT}"; then
+        # ip route replace 169.254.16.9/32 via eth0
+        echo "  up ip route replace ${ONEGATE_ENDPOINT}/32 via ${dev}"
+        cat <<EOT
+        - to: "${ONEGATE_ENDPOINT}"
+          scope: link
+EOT
+    fi
+
     if [ -n "${ip6_gateway}" ] && { [ -z "${ip6_method}" ] || [ "${ip6_method}" = 'static' ]; }; then
         cat <<EOT
         - to: "::/0"
diff --git a/src/etc/one-context.d/loc-10-network.d/netcfg-networkd b/src/etc/one-context.d/loc-10-network.d/netcfg-networkd
index 6dd5d48..45621b6 100644
--- a/src/etc/one-context.d/loc-10-network.d/netcfg-networkd
+++ b/src/etc/one-context.d/loc-10-network.d/netcfg-networkd
@@ -140,12 +140,22 @@ EOT
 
                 echo "Gateway=$gw"
                 echo "Destination=$dst"
-                echo "GatewayOnlink=yes"
             fi
         done
 
         echo ""
     fi
+
+    # Add ONEGATE Proxy static route
+    if is_link_local "${ONEGATE_ENDPOINT}"; then
+        cat <<EOT
+[Route]
+EOT
+        # ip route replace 169.254.16.9/32 via eth0
+        echo "  up ip route replace ${ONEGATE_ENDPOINT}/32 via ${dev}"
+        echo "Destination=${ONEGATE_ENDPOINT}"
+        echo "Scope=link"
+    fi
 }
 
 gen_dhcp_conf()
diff --git a/src/etc/one-context.d/loc-10-network.d/netcfg-nm b/src/etc/one-context.d/loc-10-network.d/netcfg-nm
index 08bf865..5b50761 100644
--- a/src/etc/one-context.d/loc-10-network.d/netcfg-nm
+++ b/src/etc/one-context.d/loc-10-network.d/netcfg-nm
@@ -139,6 +139,13 @@ gen_iface_conf()
 
     fi
 
+    # Add ONEGATE Proxy static route
+    if is_link_local "${ONEGATE_ENDPOINT}"; then
+        # ip route replace 169.254.16.9/32 via eth0
+        echo "  up ip route replace ${ONEGATE_ENDPOINT}/32 via ${dev}"
+        nmcli con mod "$dev" ipv4.routes "$dst" type=local
+    fi
+
     if [ -n "$metric" ]; then
         nmcli con mod "${dev}" ipv4.route-metric "${metric}"
     else
diff --git a/src/etc/one-context.d/loc-10-network.d/netcfg-scripts b/src/etc/one-context.d/loc-10-network.d/netcfg-scripts
index cf8a164..f7f7197 100644
--- a/src/etc/one-context.d/loc-10-network.d/netcfg-scripts
+++ b/src/etc/one-context.d/loc-10-network.d/netcfg-scripts
@@ -142,6 +142,13 @@ EOT
 
     fi
 
+    # Add ONEGATE Proxy static route
+    if is_link_local "${ONEGATE_ENDPOINT}"; then
+        # ip route replace 169.254.16.9/32 via eth0
+        route="${ONEGATE_ENDPOINT}/32 via ${dev}"
+        echo "$route" >> "${config_path}/route-${dev}"
+    fi
+
     if [ -n "${mtu}" ]; then
         echo "MTU=${mtu}"
     fi