examples: make 10-ifcfg-rh-routes.sh self-contained

Don't call the 'if{up,down}-routes' scripts because in next Fedora
versions network scripts will be deprecated and will not be present in
the default installation.

Instead, just copy and adapt the code from those scripts.

https://bugzilla.redhat.com/show_bug.cgi?id=1618419

1 files changed, 97 insertions, 9 deletions

diff --git a/examples/dispatcher/10-ifcfg-rh-routes.sh b/examples/dispatcher/10-ifcfg-rh-routes.sh
index b1d0314d5..147506e47 100755
--- a/examples/dispatcher/10-ifcfg-rh-routes.sh
+++ b/examples/dispatcher/10-ifcfg-rh-routes.sh
@@ -1,15 +1,49 @@
-#!/bin/sh
-
-# This ifcfg-rh-specific script runs
-# /etc/sysconfig/network-scripts/ifup-routes when bringing up
-# interfaces that have routing rules associated with them that can't
-# be expressed by NMSettingIPConfig. (Eg, policy-based routing.)
+#!/bin/bash
 
+# This script applies policy-based routing rules defined for the
+# connection in the /etc/sysconfig/network-scripts/ directory.
+#
 # This should be installed in both dispatcher.d/ and
 # dispatcher.d/pre-up.d/
-
+#
 # pre-up scripts delay activation of the device. To reduce the delay,
 # it is advised to install the script as symlink to no-wait.d directory.
+#
+# This file is derived from scripts 'if{up,down}-routes' from
+# Fedora/RHEL initscripts.
+
+MATCH='^[[:space:]]*(\#.*)?$'
+
+handle_file () {
+    . $1
+    routenum=0
+    while [ "x$(eval echo '$'ADDRESS$routenum)x" != "xx" ]; do
+        eval $(ipcalc -p $(eval echo '$'ADDRESS$routenum) $(eval echo '$'NETMASK$routenum))
+        line="$(eval echo '$'ADDRESS$routenum)/$PREFIX"
+        if [ "x$(eval echo '$'GATEWAY$routenum)x" != "xx" ]; then
+            line="$line via $(eval echo '$'GATEWAY$routenum)"
+        fi
+        line="$line dev $2"
+        /sbin/ip route add $line
+        routenum=$(($routenum+1))
+    done
+}
+
+handle_ip_file() {
+    local f t type= file=$1 proto="-4"
+    f=${file##*/}
+    t=${f%%-*}
+    type=${t%%6}
+    if [ "$type" != "$t" ]; then
+        proto="-6"
+    fi
+    { cat "$file" ; echo ; } | while read line; do
+        if [[ ! "$line" =~ $MATCH ]]; then
+            /sbin/ip $proto $type add $line
+        fi
+    done
+}
+
 
 if [ "$2" != "pre-up" -a "$2" != "down" ]; then
     exit 0
@@ -19,19 +53,73 @@ dir=$(dirname "$CONNECTION_FILENAME")
 if [ "$dir" != "/etc/sysconfig/network-scripts" ]; then
     exit 0
 fi
+
 profile=$(basename "$CONNECTION_FILENAME" | sed -ne 's/^ifcfg-//p')
 if [ -z "$profile" ]; then
     exit 0
 fi
+
 if ! [ -f "$dir/rule-$profile" -o -f "$dir/rule6-$profile" ]; then
     exit 0
 fi
 
 case "$2" in
     pre-up)
-        /etc/sysconfig/network-scripts/ifup-routes "$DEVICE_IP_IFACE" "$profile"
+        # Routes
+        FILES="/etc/sysconfig/network-scripts/route-$DEVICE_IP_IFACE"
+        FILES="$FILES /etc/sysconfig/network-scripts/route6-$DEVICE_IP_IFACE"
+        if [ "$profile" != "$DEVICE_IP_IFACE" ]; then
+            FILES="$FILES /etc/sysconfig/network-scripts/route-$profile"
+            FILES="$FILES /etc/sysconfig/network-scripts/route6-$profile"
+        fi
+
+        for file in $FILES; do
+            if [ -f "$file" ]; then
+                if grep -Eq '^[[:space:]]*ADDRESS[0-9]+=' $file ; then
+                    # new format
+                    handle_file $file ${1%:*}
+                else
+                    # older format
+                    handle_ip_file $file
+                fi
+            fi
+        done
+
+        # Rules
+        FILES="/etc/sysconfig/network-scripts/rule-$DEVICE_IP_IFACE"
+        FILES="$FILES /etc/sysconfig/network-scripts/rule6-$DEVICE_IP_IFACE"
+        if [ "$profile" != "$DEVICE_IP_IFACE" ]; then
+            FILES="$FILES /etc/sysconfig/network-scripts/rule-$profile"
+            FILES="$FILES /etc/sysconfig/network-scripts/rule6-$profile"
+        fi
+
+        for file in $FILES; do
+            if [ -f "$file" ]; then
+                handle_ip_file $file
+            fi
+        done
         ;;
     down)
-        /etc/sysconfig/network-scripts/ifdown-routes "$DEVICE_IP_IFACE" "$profile"
+        # Routes are deleted by NetworkManager
+        # Rules
+        FILES="/etc/sysconfig/network-scripts/rule-$DEVICE_IP_IFACE"
+        FILES="$FILES /etc/sysconfig/network-scripts/rule6-$DEVICE_IP_IFACE"
+        if [ "$profile" != "$DEVICE_IP_IFACE" ]; then
+            FILES="$FILES /etc/sysconfig/network-scripts/rule-$profile"
+            FILES="$FILES /etc/sysconfig/network-scripts/rule6-$profile"
+        fi
+        for file in $FILES; do
+            if [ -f "$file" ]; then
+                proto=
+                if [ "$file" != "${file##*/rule6-}" ]; then
+                    proto="-6"
+                fi
+                { cat "$file" ; echo ; } | while read line; do
+                    if [[ ! "$line" =~ $MATCH ]]; then
+                        /sbin/ip $proto rule del $line
+                    fi
+                done
+            fi
+        done
         ;;
 esac