geht erst mal

4 files changed, 142 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d7177e8
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+update-ddns
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2d11b9d
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,58 @@
+#
+#  update-ddns - script to update freedns.afraid.org's ddns entries if necessary
+#
+#  Copyright (c) 2013-2016 Erich Eckner <opensource at eckner dot net>
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+#  USA.
+#
+
+DESTDIR	 =
+ETCDIR   = /etc
+BINDIR	 = /usr/bin
+MANDIR	 = /usr/share/man
+
+VERSION  = 0.0
+
+all: update-ddns
+
+%: %.in
+	sed " \
+		s/#VERSION#/$(VERSION)/; \
+		s@#BINDIR#@$(BINDIR)@; \
+		s@#ETCDIR#@$(ETCDIR)@; \
+		s@#HELPTEXT#\(\s\+\)#@  --help   \1display this help and exit\n  --version\1display version and exit@; \
+		" $< > $@
+	[ "$@" = "update-ddns" ] && chmod +x "$@" || true
+
+.PHONY:	install dist clean
+
+install: all
+	install -D -m0755 update-ddns $(DESTDIR)$(BINDIR)/update-ddns
+	install -D -m0644 update-ddns.conf $(DESTDIR)$(ETCDIR)/update-ddns.conf
+
+clean:
+	ls -A | \
+		grep "^\($(shell sed 's|\.|\\.|; s|\*|.*|; s|$$|\\|' .gitignore | tr '\n' '\|')\)\$$" | \
+		xargs -r rm
+
+dist: clean
+	git status --porcelain 2> /dev/null | grep -q "\S" && (git add .; git commit -m"neue Version: $(VERSION)") || true
+	! git tag -d v$(VERSION) 2> /dev/null
+	git tag v$(VERSION)
+	git push
+	git push --tags
+
+# End of file
diff --git a/update-ddns.conf b/update-ddns.conf
new file mode 100644
index 0000000..4d7762b
--- /dev/null
+++ b/update-ddns.conf
@@ -0,0 +1,3 @@
+6 authToken1 eno1 dnsName1
+4 authToken2 eno1 dnsName2
+4 authToken3 http://ip-check.url
diff --git a/update-ddns.in b/update-ddns.in
new file mode 100644
index 0000000..da7facd
--- /dev/null
+++ b/update-ddns.in
@@ -0,0 +1,80 @@
+#!/bin/bash
+
+set -e
+
+stty &> /dev/null || \
+  sleep $[$RANDOM%60]
+
+if ! ipCmd="$(which ip 2> /dev/null)"
+then
+  for p1 in / /usr/
+  do
+    for p2 in bin/ sbin/
+    do
+      ipCmd="${p1}${p2}ip"
+      [ -x "${ipCmd}" ] && break
+    done
+    [ -x "${ipCmd}" ] && break
+  done
+fi
+
+while read -r ipVer authToken dev dnsName
+do
+
+  if [[ "${ipVer}" = "#"* ]] || [ -z "${ipVer}" ]
+  then
+    continue
+  fi
+
+  if [ ${ipVer} == "4" ]
+  then
+    dnsVer="A"
+    inetVer="inet"
+    syncPre=""
+  elif [ ${ipVer} == "6" ] 
+  then
+    dnsVer="AAAA"
+    inetVer="inet6"
+    syncPre="v6."
+  else
+    >&2 echo 'Error: First column in "#ETCDIR#/update-ddns.conf" needs to be "4" or "6"!'
+    exit 1
+  fi
+
+  if [ -z "${dnsName}" ]
+  then
+    dnsIps="$(
+      curl -${ipVer} "${dev}" 2> /dev/null
+    )"
+    ips="1"
+  else
+    dnsIps="$(
+      dig "${dnsName}" ${dnsVer} | \
+        grep -v '^\s*\(;\|$\)' | \
+        grep "\s${dnsVer}\s" | \
+        awk '{print $5}' | \
+        sort -u
+    )"
+
+    ips="$(
+      "${ipCmd}" addr show dev "${dev}" | \
+        grep "^\s*${inetVer}\s.*\sscope\sglobal\s" | \
+        awk '{print $2}' | \
+        cut -d/ -f1 | \
+        sort -u
+    )"
+  fi
+
+  if [ -z "$(
+    (
+      echo "${dnsIps}"
+      echo "${ips}"
+    ) | \
+      sort | \
+      uniq -d
+  )" ]
+  then
+    echo curl -sS "https://${syncPre}sync.afraid.org/u/${authToken}/"
+  fi
+
+done < #ETCDIR#/update-ddns.conf