Added ability to reflect RNS logs to app-internal log handler callback

RNS/Reticulum.py

@@ -213,6 +213,9 @@ class Reticulum:
         if logdest == RNS.LOG_FILE:
             RNS.logdest = RNS.LOG_FILE
             RNS.logfile = Reticulum.configdir+"/logfile"
+        elif callable(logdest):
+            RNS.logdest = RNS.LOG_CALLBACK
+            RNS.logcall = logdest
         
         Reticulum.configpath    = Reticulum.configdir+"/config"
         Reticulum.storagepath   = Reticulum.configdir+"/storage"

RNS/__init__.py

@@ -59,12 +59,14 @@ LOG_EXTREME  = 7
 
 LOG_STDOUT   = 0x91
 LOG_FILE     = 0x92
+LOG_CALLBACK = 0x93
 
 LOG_MAXSIZE  = 5*1024*1024
 
 loglevel        = LOG_NOTICE
 logfile         = None
 logdest         = LOG_STDOUT
+logcall         = None
 logtimefmt      = "%Y-%m-%d %H:%M:%S"
 compact_log_fmt = False
 
@@ -141,6 +143,17 @@ def log(msg, level=3, _override_destination = False):
                 log("Dumping future log events to console!", LOG_CRITICAL)
                 log(msg, level)
 
+        elif logdest == LOG_CALLBACK:
+            try:
+                logcall(logstring)
+                logging_lock.release()
+            except Exception as e:
+                logging_lock.release()
+                _always_override_destination = True
+                log("Exception occurred while calling external log handler: "+str(e), LOG_CRITICAL)
+                log("Dumping future log events to console!", LOG_CRITICAL)
+                log(msg, level)
+                
 
 def rand():
     result = instance_random.random()