initial commit

rzonegen.py

@@ -0,0 +1,65 @@
+#! /usr/bin/env python
+
+import sys
+import json
+import codecs
+import re
+from datetime import datetime
+
+def str_to_domainlabel(s):
+    label = re.sub("[^0-9a-zA-Z-]", "-", s)
+    label = re.sub("-+", "-", label)
+    label = re.sub("^-*", "", label)
+    label = re.sub("-*$", "", label)
+
+    if not re.match("^[a-zA-Z][a-zA-Z0-9-]*[a-zA-Z0-9]$", label):
+        raise RuntimeError("Not convertable to a domain label: %s" % s)
+    return label
+
+def ipv6_addr_to_rdns(addr):
+    rdns = ""
+    counter = 4
+
+    for char in reversed(addr):
+        if char == ':':
+            rdns += counter * '0.'
+            counter = 4
+        else:
+            rdns += char + '.'
+            counter -= 1
+
+    rdns += 'ip6.arpa.'
+    return rdns
+
+data = json.load(sys.stdin)
+domain = sys.argv[1]
+if not domain.startswith("."):
+    domain = "." + domain
+
+if not domain.endswith("."):
+    domain = domain + "."
+
+print("""$TTL 1h
+@       IN      SOA     ns.ffhb. liste.bremen.freifunk.net. (
+        %s ; serial
+        1h ; refresh
+        30m ; retry
+        2d ; expiration
+        1h ; caching
+        )
+
+@		NS      ns01.ffhb.
+""" % datetime.now().strftime("%Y%m%d%H%M"))
+
+for node in data.values():
+    try:
+        for address in node['network']['addresses']:
+            if address.startswith("fe80:"):
+                continue
+
+            rdns = ipv6_addr_to_rdns(address)
+
+            if rdns.endswith(domain):
+                print "%s PTR %s.nodes.ffhb." % (ipv6_addr_to_rdns(address)[0:-len(domain)], str_to_domainlabel(node['hostname']))
+    except:
+        pass

update-dns.sh

@@ -0,0 +1,65 @@
+#! /usr/bin/env bash
+
+# getting workingdir of scripts
+WORK_DIR="$(dirname $(readlink -nf $0))"
+
+# set safe path
+PATH="${WORK_DIR}:/sbin:/usr/sbin:/bin:/usr/bin"
+
+# define variable to count loops
+declare -i NUM=0
+
+# tmp file
+TMP_FILE="$(mktemp)"
+
+# if creation of tmp file failed
+# exit
+if [ -z "$TMP_FILE" ]; then
+  exit 1
+fi
+
+# names of zones
+ZONEFILE=/var/cache/bind/ffhb.nodes.zone
+RZONEFILE=/var/cache/bind/arpa.ip6.f.d.2.f.5.1.1.9.0.f.2.c.zone
+
+# loop until data received
+while true; do
+  # increment counter
+  NUM=$(($NUM+1))
+
+  # get data from alfred
+  alfred-json -z -r 158 > "$TMP_FILE" 2>/dev/null
+
+  # on success leave loop
+  if [ $? -eq 0 ]; then
+    break
+  fi
+
+  # if the 120th run has reached kill script
+  if [ $NUM -gt 240 ]; then
+    # remove tmp file
+    rm -f "$TMP_FILE"
+
+    # exit with error code
+    exit 1
+  fi
+
+  # sleep to be safe CPU load don't getting higher
+  sleep 1
+done
+
+# generate forward zone
+if zonegen.py < "$TMP_FILE" > "${ZONEFILE}.new"; then
+  mv "${ZONEFILE}.new" "${ZONEFILE}"
+fi
+
+# generate reverse zone
+if rzonegen.py 0.0.0.0.c.2.f.0.9.1.1.5.f.2.d.f.ip6.arpa < "$TMP_FILE" > "${RZONEFILE}.new"; then
+  mv "${RZONEFILE}.new" "${RZONEFILE}"
+fi
+
+# reload nameserver
+rndc reload >/dev/null
+
+# remove tmp file
+rm -f "$TMP_FILE"

zonegen.py

@@ -0,0 +1,43 @@
+#! /usr/bin/env python
+
+import sys
+import json
+import codecs
+import re
+from datetime import datetime
+
+def str_to_domainlabel(s):
+    label = re.sub("[^0-9a-zA-Z-]", "-", s)
+    label = re.sub("-+", "-", label)
+    label = re.sub("^-*", "", label)
+    label = re.sub("-*$", "", label)
+
+    if not re.match("^[a-zA-Z][a-zA-Z0-9-]*[a-zA-Z0-9]$", label):
+        raise RuntimeError("Not convertable to a domain label: %s" % s)
+
+    return label
+
+data = json.load(sys.stdin)
+
+print """$TTL 1h
+@       IN      SOA     ns.ffhb. liste.bremen.freifunk.net. (
+        %s ; serial
+        1h ; refresh
+        30m ; retry
+        2d ; expiration
+        1h ; caching
+        )
+
+                NS      ns.ffhb.
+
+""" % datetime.now().strftime("%Y%m%d%H%M")
+
+for node in data.values():
+    try:
+        for address in node['network']['addresses']:
+            if address.startswith("fe80:"):
+                continue
+
+            print "%-15s AAAA    %s" % (str_to_domainlabel(node['hostname']), address)
+    except:
+        pass