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| 1 | #!/bin/sh | |
| 2 | # Dependencies: | |
| 3 | # Required: | |
| 4 | # ifconfig && grep && wc && awk && ( curl || wget ) | |
| 5 | # Recommended: | |
| 6 | # stat ca-certificates | |
| 7 | # Notes: | |
| 8 | # Change eth0 to the correct interface, see ifconfig output for details, if you are behind a router and dont care to look it up "lo" should work | |
| 9 | ||
| 10 | # Basic Configuration Options: | |
| 11 | - | LOG="/var/log/ip_log" |
| 11 | + | |
| 12 | TOKEN="YOUR_TOKEN_HERE" | |
| 13 | LOG="/tmp/duckdns" | |
| 14 | - | NEW=$(/sbin/ifconfig $NIC | awk -F':' '/inet addr/{split($2,_," ");print _[1]}')
|
| 14 | + | |
| 15 | - | #NEW=$(hostname -I) # If this works (and gets the right address) it is better than the above, some systems may use -i |
| 15 | + | DEBUG="off" |
| 16 | - | if [ $(echo $NEW | grep '^192.\|^10.\|^127.\|^172.' | wc -l) -eq 1 ];then |
| 16 | + | |
| 17 | - | echo "Using external IP check" |
| 17 | + | # Advanced Configuration Options: |
| 18 | IP="$LOG.log" | |
| 19 | TIME="$LOG-time.log" | |
| 20 | WARN="$LOG-warn.log" | |
| 21 | ERROR="$LOG-warn.log" | |
| 22 | ||
| 23 | # NEW=$(hostname -I) # If this works (and gets the right address) use this, some systems may use -i | |
| 24 | - | echo "Failed to get external IP" > "$LOG-error" |
| 24 | + | |
| 25 | # You should not need to edit anything below this line | |
| 26 | ||
| 27 | if [ -z "$NEW" ];then | |
| 28 | NEW=$(/sbin/ifconfig $NIC | awk -F':' '/inet addr/{split($2,_," ");print _[1]}')
| |
| 29 | fi | |
| 30 | if [ $(echo $NEW | grep '^192.168.\|^10.\|^127.\|^172.1[6-9].\|^172.2[0-9].\|^172.3[0-1].\|^169.254.[1-2]' | wc -l) -eq 1 ];then | |
| 31 | # Match IP range: 192.168. 10. 127. --> 172.(16-31). <-- 169.254.(1,2) | |
| 32 | echo "Using external IP check, use 11 second intervals or more to avoid being blocked" >> "$WARN" | |
| 33 | - | if [ -f "$LOG" ];then |
| 33 | + | |
| 34 | NEW=$(curl http://ipecho.net/plain 2>/dev/null) | |
| 35 | - | THEN=$(stat -c "%Y" "$LOG") |
| 35 | + | |
| 36 | NEW=$(wget -qO- http://ipecho.net/plain) | |
| 37 | - | THEN=$(cat "$LOG.time") |
| 37 | + | |
| 38 | if [ $? -ne 0 ];then | |
| 39 | - | OLD=$(cat "$LOG") |
| 39 | + | echo "Failed to get external IP" >> "$ERROR" |
| 40 | exit | |
| 41 | fi | |
| 42 | fi | |
| 43 | TAT=1 | |
| 44 | if [ $(type stat > /dev/null;echo $?) -eq 0 ];then | |
| 45 | TAT=0; | |
| 46 | - | S="https" |
| 46 | + | |
| 47 | - | D="http" |
| 47 | + | |
| 48 | - | URL="://www.duckdns.org/update?domains=$DOMAIN&token=$TOKEN&ip=$NEW" |
| 48 | + | if [ -f "$IP" ];then |
| 49 | if [ $TAT -eq 0 ];then | |
| 50 | THEN=$(stat -c "%Y" "$IP") | |
| 51 | else | |
| 52 | - | echo "Looks like ca-serticates is missing or outdated" > "$LOG-warn" |
| 52 | + | THEN=$(cat "$TIME") |
| 53 | fi | |
| 54 | OLD=$(cat "$IP") | |
| 55 | else | |
| 56 | THEN=864000 | |
| 57 | OLD="0.0.0.0" | |
| 58 | fi | |
| 59 | - | echo "Looks like ca-serticates is missing or outdated" > "$LOG-warn" |
| 59 | + | |
| 60 | if [ "$OLD" != "$NEW" ] || [ $(($NOW-$THEN)) -gt 863999 ];then | |
| 61 | S="https://" | |
| 62 | - | echo "wget does not appear to support SSL" > "$LOG-warn" |
| 62 | + | D="http://" |
| 63 | URL="www.duckdns.org/update?domains=$DOMAIN&token=$TOKEN&ip=$NEW" | |
| 64 | if [ $DEBUG != "off" ];then | |
| 65 | echo $URL | |
| 66 | fi | |
| 67 | if [ $(type curl > /dev/null;echo $?) -eq 0 ];then | |
| 68 | - | echo "$NEW" > "$LOG" |
| 68 | + | |
| 69 | if [ $? -eq 77 ];then | |
| 70 | - | echo "$(date +%s)" > "$LOG.time" |
| 70 | + | echo "Looks like ca-certificates is missing or outdated" >> "$WARN" |
| 71 | NOW=$(curl -k "$S$URL" 2>/dev/null) | |
| 72 | fi | |
| 73 | - | echo "$NOW" > "$LOG-error" |
| 73 | + | |
| 74 | NOW=$(wget -q -O - "$S$@" "$URL") | |
| 75 | if [ $? -eq 1 ];then | |
| 76 | if [ $(wget --help|grep '--no-check-certificate') ];then | |
| 77 | echo "Looks like ca-certificates is missing or outdated" >> "$WARN" | |
| 78 | NOW=$(wget --no-check-certificate -q -O - "$@" "$S$URL") | |
| 79 | else | |
| 80 | echo "wget does not appear to support SSL" >> "$WARN" | |
| 81 | NOW=$(wget -q -O - "$@" "$D$URL") | |
| 82 | fi | |
| 83 | fi | |
| 84 | fi | |
| 85 | if [ "$NOW" = "OK" ]; then | |
| 86 | echo "$NEW" > "$IP" | |
| 87 | if [ $TAT -eq 1 ];then | |
| 88 | echo "$(date +%s)" > "$TIME" | |
| 89 | fi | |
| 90 | elif [ "$NOW" = "KO" ]; then | |
| 91 | echo "Double-check your Token/Domain" >> "$ERROR" | |
| 92 | else | |
| 93 | echo "$NOW" >> "$ERROR" | |
| 94 | fi | |
| 95 | fi | |
| 96 | fi | |
| 97 | if [ $DEBUG != "off" ];then | |
| 98 | if [ -f "$ERROR" ];then | |
| 99 | ls -l "$ERROR" | |
| 100 | echo "Error Log:" | |
| 101 | cat "$ERROR" | |
| 102 | echo '--------------------' | |
| 103 | fi | |
| 104 | if [ -f "$WARN" ];then | |
| 105 | ls -l "$WARN" | |
| 106 | echo "Warning Log:" | |
| 107 | cat "$WARN" | |
| 108 | echo '--------------------' | |
| 109 | fi | |
| 110 | if [ -f "$IP" ];then | |
| 111 | ls -l "$IP" | |
| 112 | echo "Last IP:" | |
| 113 | cat "$IP" | |
| 114 | else | |
| 115 | echo "NO last IP, well this is not good" | |
| 116 | fi | |
| 117 | else | |
| 118 | if [ $(cat "$ERROR" | wc -l) -gt 16 ];then | |
| 119 | cat "$ERROR" | tail -8 > "$ERROR" | |
| 120 | fi | |
| 121 | if [ $(cat "$WARN" | wc -l) -gt 16 ];then | |
| 122 | cat "$WARN" | tail -8 > "$WARN" | |
| 123 | fi | |
| 124 | fi |
