feat: ✨ Duplicate entry prevention

Added method to prevent duplicate entries.

changelog.org

@@ -15,6 +15,9 @@
     - massive refactoring of how variables are passed.
     - fixed chan_hop argument error
     - fixed signal_handler undefined log error
+    - removed globalization of scan_df
+    - added duplicate prevention for csv valid file
+    - removed cause of annoying duplicate entry.
 ** 0.4.1
 *** 2024.01.26
     - Fixing interface name resolution error in @__init__@.

ctiger.py

@@ -278,9 +278,13 @@ class Purge(object):
         dbm_signal = pkt.dBm_AntSignal
         pkt_chan = self.extract_channel(pkt[Dot11])
         self.log.debug('Extracted channel: {0}'.format(pkt_chan))
-        scan_df.loc[bssid] = [self.macaddr, dbm_signal,
-                              pkt_chan, 'N/A']
-        scan_df.to_csv(self.valid_file, mode='a')
+        pkg_df = pd.read_csv(self.valid_file, index_col=0)
+        if bssid in pkg_df.index:
+            self.log.info('Duplicate CTS from {0}'.format(bssid))
+            return
+        self.scan_df.loc[bssid] = [self.macaddr, dbm_signal,
+                                   pkt_chan, 'N/A']
+        self.scan_df.to_csv(self.valid_file, mode='a', index=False)
         self.log.info('Results written to {0}'.format(valid_file))
 
     def probe_prn(self, pkt):
@@ -299,8 +303,7 @@ class Purge(object):
         self.log = log
         log.info('mac revealer started')
         log.info('setting up class attributes')
-        global scan_df
-        scan_df = get_df()
+        self.scan_df = get_df()
         log.info('acquired Dataframe')
         mon_if, macaddr = self.get_interface()
         self.mon_if = mon_if