This commit was generated by cvs2svn to compensate for changes in r45,

[pingofdeath.git] / enable_pod.sh

diff --git a/enable_pod.sh b/enable_pod.sh
new file mode 100755 (executable)
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--- /dev/null
+++ b/enable_pod.sh
@@ -0,0 +1,76 @@
+#! /bin/bash
+#include INTEL_LICENSE.txt
+#
+########################################################################
+#
+# Enable Ping Of Death
+#
+########################################################################
+#
+# DESCRIPTION
+#
+# The Enable_POD function is passed the IP_SUBNET, IP_MASK and HASH and
+# does all the dirty muching about with syscontrols
+#
+# HISTORY
+#
+# May 17, 2003    -   Paul Brett <paul.brett@intel.com>
+#                     Initial version based on the work of 
+#                     Robert Adams <robert.adams@intel.com> and EMULAB
+#
+
+function enable_pod()
+{
+    local SYSCTL=/sbin/sysctl
+
+    local IP_SUBNET=$1
+    local IP_MASK=$2
+    local IP_HASH=$3
+
+    # Grotesque sed/awk converts IP addrs into an integer for sysctl
+    local IPODHOST=`echo $IP_SUBNET | \
+              sed -e 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \2 \3 \4/' | \
+              awk '{ printf "%d\n", $1*16777216+$2*65536+$3*256+$4 }'`
+    local IPODMASK=`echo $IP_MASK | \
+              sed -e 's/\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\).*/\1 \2 \3 \4/' | \
+              awk '{ printf "%d\n", $1*16777216+$2*65536+$3*256+$4 }'`
+    local IPODKEY=`echo $HASH | \
+              sed -e 's/\(.*\)/\1/'`
+
+    # figure out the version
+    local version=`$SYSCTL net.ipv4.icmp_ipod_version 2>/dev/null`
+    if [[ "$version" == "" ]]
+    then
+        $SYSCTL net.ipv4.icmp_ipod_enabled >/dev/null 2>&1
+        case $? in
+            0)
+                version=1
+                ;;
+            *)
+                version=0
+                ;;
+        esac
+    fi
+
+    # enable if possible
+    case $version in
+        0)
+            return 1
+            ;;
+        1)
+            $SYSCTL -w net.ipv4.icmp_ipod_host=$IPODHOST >/dev/null
+            $SYSCTL -w net.ipv4.icmp_ipod_enabled=1 >/dev/null
+            Success=0
+            ;;
+        *)
+            $SYSCTL -w net.ipv4.icmp_ipod_host=$IPODHOST >/dev/null
+            Success=$?
+            $SYSCTL -w net.ipv4.icmp_ipod_mask=$IPODMASK >/dev/null
+            $SYSCTL -w net.ipv4.icmp_ipod_key=$IPODKEY >/dev/null
+            $SYSCTL -w net.ipv4.icmp_ipod_enabled=1 >/dev/null
+        ;;
+    esac
+    return $Success
+}
+
+