1 files changed, 77 insertions, 0 deletions
diff --git a/external/unbound/pythonmod/examples/calc.py b/external/unbound/pythonmod/examples/calc.py
new file mode 100644
index 000000000..3230e37e3
--- /dev/null
+++ b/external/unbound/pythonmod/examples/calc.py
@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+'''
+ calc.py: DNS-based calculator 
+
+ Copyright (c) 2009, Zdenek Vasicek (vasicek AT fit.vutbr.cz)
+                     Marek Vavrusa  (xvavru00 AT stud.fit.vutbr.cz)
+
+ This software is open source.
+ 
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+ 
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+ 
+    * Neither the name of the organization nor the names of its
+      contributors may be used to endorse or promote products derived from this
+      software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+'''
+
+#Try: dig @localhost 1*25._calc_.cz.
+
+def init(id, cfg): return True
+def deinit(id): return True
+def inform_super(id, qstate, superqstate, qdata): return True
+
+def operate(id, event, qstate, qdata):
+
+    if (event == MODULE_EVENT_NEW) or (event == MODULE_EVENT_PASS):
+
+        if qstate.qinfo.qname_str.endswith("._calc_.cz."):
+            try:
+                res = eval(''.join(qstate.qinfo.qname_list[0:-3]))
+            except:
+                res = "exception"
+
+            msg = DNSMessage(qstate.qinfo.qname_str, RR_TYPE_TXT, RR_CLASS_IN, PKT_QR | PKT_RA | PKT_AA) #, 300)
+            msg.answer.append("%s 300 IN TXT \"%s\"" % (qstate.qinfo.qname_str,res))
+            if not msg.set_return_msg(qstate):
+               qstate.ext_state[id] = MODULE_ERROR 
+               return True
+
+            qstate.return_rcode = RCODE_NOERROR
+            qstate.ext_state[id] = MODULE_FINISHED 
+            return True
+
+        else: 
+            #Pass on the unknown query to the iterator
+            qstate.ext_state[id] = MODULE_WAIT_MODULE 
+            return True
+
+    elif event == MODULE_EVENT_MODDONE: 
+        #the iterator has finished
+        qstate.ext_state[id] = MODULE_FINISHED
+        return True
+
+    log_err("pythonmod: Unknown event")
+    qstate.ext_state[id] = MODULE_ERROR
+    return True
+