Adding scripts

.gitignore

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+*.log
+update-route53.ip
+update-route53.ipv6.ip

update-route53.ipv6.sh

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+#!/bin/bash
+ 
+# Hosted Zone ID e.g. BJBK35SKMM9OE
+ZONEID="Z49JKEQC08KW8"
+ 
+# The CNAME you want to update e.g. hello.example.com
+RECORDSET="aws.monkeybox.org"
+ 
+# More advanced options below
+# The Time-To-Live of this recordset
+TTL=300
+# Change this if you want
+COMMENT="Auto updating @ `date`"
+# Change to AAAA if using an IPv6 address
+TYPE="AAAA"
+ 
+# Get the external IP address
+IP=`curl -ss http://ipv6.icanhazip.com/`
+
+# IPv6 Validation:
+WORD="[0-9A-Fa-f]\{1,4\}"
+# flat address, no compressed words
+FLAT="^${WORD}\(:${WORD}\)\{7\}$"
+# ::'s compressions excluding beginning and end edge cases
+COMP2="^\(${WORD}:\)\{1,1\}\(:${WORD}\)\{1,6\}$"
+COMP3="^\(${WORD}:\)\{1,2\}\(:${WORD}\)\{1,5\}$"
+COMP4="^\(${WORD}:\)\{1,3\}\(:${WORD}\)\{1,4\}$"
+COMP5="^\(${WORD}:\)\{1,4\}\(:${WORD}\)\{1,3\}$"
+COMP6="^\(${WORD}:\)\{1,5\}\(:${WORD}\)\{1,2\}$"
+COMP7="^\(${WORD}:\)\{1,6\}\(:${WORD}\)\{1,1\}$"
+# trailing :: edge case, includes case of only :: (all 0's)
+EDGE_TAIL="^\(\(${WORD}:\)\{1,7\}\|:\):$"
+# leading :: edge case
+EDGE_LEAD="^:\(:${WORD}\)\{1,7\}$"
+
+function valid_ip()
+{
+    # Returns 0 on a good IP, 1 on a bad IP
+    local  ip=$1
+
+    echo $ip | grep --silent "\(${FLAT}\)\|\(${COMP2}\)\|\(${COMP3}\)\|\(${COMP4}\)\|\(${COMP5}\)\|\(${COMP6}\)\|\(${COMP7}\)\|\(${EDGE_TAIL}\)\|\(${EDGE_LEAD}\)"
+    if [ $? -eq 0 ]; then
+        return 0
+    fi
+    return 1
+}
+ 
+# Get current dir (stolen from http://stackoverflow.com/a/246128/920350)
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+LOGFILE="$DIR/update-route53.ipv6.log"
+IPFILE="$DIR/update-route53.ipv6.ip"
+ 
+if ! valid_ip $IP; then
+    echo "Invalid IP address: $IP" >> "$LOGFILE"
+    exit 1
+fi
+ 
+# Check if the IP has changed
+if [ ! -f "$IPFILE" ]
+    then
+    touch "$IPFILE"
+fi
+ 
+if grep -Fxq "$IP" "$IPFILE"; then
+    # code if found
+    echo "IP is still $IP. Exiting" >> "$LOGFILE"
+    exit 0
+else
+    echo "IP has changed to $IP" >> "$LOGFILE"
+    # Fill a temp file with valid JSON
+    TMPFILE=$(mktemp /tmp/temporary-file.XXXXXXXX)
+    cat > ${TMPFILE} << EOF
+    {
+      "Comment":"$COMMENT",
+      "Changes":[
+        {
+          "Action":"UPSERT",
+          "ResourceRecordSet":{
+            "ResourceRecords":[
+              {
+                "Value":"$IP"
+              }
+            ],
+            "Name":"$RECORDSET",
+            "Type":"$TYPE",
+            "TTL":$TTL
+          }
+        }
+      ]
+    }
+EOF
+ 
+    # Update the Hosted Zone record
+    aws route53 change-resource-record-sets \
+        --hosted-zone-id $ZONEID \
+        --change-batch file://"$TMPFILE" >> "$LOGFILE"
+    echo "" >> "$LOGFILE"
+ 
+    # Clean up
+    rm $TMPFILE
+fi
+ 
+# All Done - cache the IP address for next time
+echo "$IP" > "$IPFILE"
+

update-route53.sh

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+#!/bin/bash
+ 
+# Hosted Zone ID e.g. BJBK35SKMM9OE
+ZONEID="Z49JKEQC08KW8"
+ 
+# The CNAME you want to update e.g. hello.example.com
+RECORDSET="aws.monkeybox.org"
+ 
+# More advanced options below
+# The Time-To-Live of this recordset
+TTL=300
+# Change this if you want
+COMMENT="Auto updating @ `date`"
+# Change to AAAA if using an IPv6 address
+TYPE="A"
+ 
+# Get the external IP address
+IP=`curl -ss http://ipv4.icanhazip.com/`
+ 
+function valid_ip()
+{
+    local  ip=$1
+    local  stat=1
+ 
+    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+        OIFS=$IFS
+        IFS='.'
+        ip=($ip)
+        IFS=$OIFS
+        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
+            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
+        stat=$?
+    fi
+    return $stat
+}
+ 
+# Get current dir (stolen from http://stackoverflow.com/a/246128/920350)
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+LOGFILE="$DIR/update-route53.log"
+IPFILE="$DIR/update-route53.ip"
+ 
+if ! valid_ip $IP; then
+    echo "Invalid IP address: $IP" >> "$LOGFILE"
+    exit 1
+fi
+ 
+# Check if the IP has changed
+if [ ! -f "$IPFILE" ]
+    then
+    touch "$IPFILE"
+fi
+ 
+if grep -Fxq "$IP" "$IPFILE"; then
+    # code if found
+    echo "IP is still $IP. Exiting" >> "$LOGFILE"
+    exit 0
+else
+    echo "IP has changed to $IP" >> "$LOGFILE"
+    # Fill a temp file with valid JSON
+    TMPFILE=$(mktemp /tmp/temporary-file.XXXXXXXX)
+    cat > ${TMPFILE} << EOF
+    {
+      "Comment":"$COMMENT",
+      "Changes":[
+        {
+          "Action":"UPSERT",
+          "ResourceRecordSet":{
+            "ResourceRecords":[
+              {
+                "Value":"$IP"
+              }
+            ],
+            "Name":"$RECORDSET",
+            "Type":"$TYPE",
+            "TTL":$TTL
+          }
+        }
+      ]
+    }
+EOF
+ 
+    # Update the Hosted Zone record
+    aws route53 change-resource-record-sets \
+        --hosted-zone-id $ZONEID \
+        --change-batch file://"$TMPFILE" >> "$LOGFILE"
+    echo "" >> "$LOGFILE"
+ 
+    # Clean up
+    rm $TMPFILE
+fi
+ 
+# All Done - cache the IP address for next time
+echo "$IP" > "$IPFILE"
+