uploaded additional python code for QRZ.COM lookup

qrz_utils.py

@@ -0,0 +1,73 @@
+import os
+import requests
+import xmltodict
+
+class QRZerror(Exception):
+    pass
+
+class CallsignNotFound(Exception):
+    pass
+
+class QRZsessionNotFound(Exception):
+    pass
+
+class QRZMissingCredentials(Exception):
+    pass
+
+class QRZ(object):
+    def __init__(self, cfg_filename):
+        try:
+            with open(cfg_filename, "r") as fd:
+                data = fd.readlines()
+            for row in data:
+                if "username" in row:
+                    self.username = row.split("=")[1].rstrip()
+                if "password" in row:
+                    self.password = row.split("=")[1].rstrip()
+        except:
+            self.username = None
+            self.password = None
+        self._session = None
+        self._session_key = None
+
+    def _get_session(self):
+        if not self.username or not self.password:
+            raise QRZMissingCredentials("No Username/Password found")
+
+        url = '''https://xmldata.qrz.com/xml/current/?username={0}&password={1}'''.format(self.username, self.password)
+        self._session = requests.Session()
+        self._session.verify = bool(os.getenv('SSL_VERIFY', False))
+        r = self._session.get(url)
+        if r.status_code == 200:
+            raw_session = xmltodict.parse(r.content)
+            self._session_key = raw_session.get('QRZDatabase').get('Session').get('Key')
+            if self._session_key:
+                return True
+        raise QRZsessionNotFound("Could not get QRZ session")
+
+    def callsign(self, callsign, retry=True):
+        if self._session_key is None:
+            self._get_session()
+        url = """http://xmldata.qrz.com/xml/current/?s={0}&callsign={1}""".format(self._session_key, callsign)
+        r = self._session.get(url)
+        if r.status_code != 200:
+            raise Exception("Error Querying: Response code {}".format(r.status_code))
+        raw = xmltodict.parse(r.content).get('QRZDatabase')
+        if not raw:
+            raise QRZerror('Unexpected API Result')
+        if raw['Session'].get('Error'):
+            errormsg = raw['Session'].get('Error')
+            if 'Session Timeout' in errormsg or 'Invalid session key' in errormsg:
+                if retry:
+                    self._session_key = None
+                    self._session = None
+                    return self.callsign(callsign, retry=False)
+            elif "not found" in errormsg.lower():
+                raise CallsignNotFound(errormsg)
+            raise QRZerror(raw['Session'].get('Error'))
+        else:
+            ham = raw.get('Callsign')
+            if ham:
+                return ham
+        raise Exception("Unhandled Error during Query")
+