Add some error handling

onionr/core.py

@@ -36,6 +36,7 @@ class Core:
         '''
             Initialize Core Onionr library
         '''
+        try:
             self.queueDB = 'data/queue.db'
             self.peerDB = 'data/peers.db'
             self.blockDB = 'data/blocks.db'
@@ -57,7 +58,10 @@ class Core:
             self._utils = onionrutils.OnionrUtils(self)
             # Initialize the crypto object
             self._crypto = onionrcrypto.OnionrCrypto(self)
-
+        except Exception as error:
+            logger.error('Failed to initialize core Onionr library.', error=error)
+            logger.fatal('Cannot recover from error.')
+            exit(1)
         return
 
     def addPeer(self, peerID, name=''):

onionr/onionrutils.py

@@ -41,15 +41,19 @@ class OnionrUtils:
         return
 
     def getTimeBypassToken(self):
+        try:
             if os.path.exists('data/time-bypass.txt'):
                 with open('data/time-bypass.txt', 'r') as bypass:
                     self.timingToken = bypass.read()
+        except Exception as error:
+            logger.error('Failed to fetch time bypass token.', error=error)
 
     def sendPM(self, pubkey, message):
         '''
             High level function to encrypt a message to a peer and insert it as a block
         '''
 
+        try:
             encrypted = self._core._crypto.pubKeyEncrypt(message, pubkey, anonymous=True, encodedData=True).decode()
             block = self._core.insertBlock(encrypted, header='pm')
 
@@ -57,6 +61,8 @@ class OnionrUtils:
                 logger.error('Could not send PM')
             else:
                 logger.info('Sent PM, hash: ' + block)
+        except Exception as error:
+            logger.error('Failed to send PM.', error=error)
 
         return
 
@@ -80,6 +86,7 @@ class OnionrUtils:
         '''
             Merge ed25519 key list to our database
         '''
+        try:
             retVal = False
             if newKeyList != False:
                 for key in newKeyList.split(','):
@@ -87,12 +94,16 @@ class OnionrUtils:
                         if self._core.addPeer(key):
                             retVal = True
             return retVal
+        except Exception as error:
+            logger.error('Failed to merge keys.', error=error)
+            return False
 
 
     def mergeAdders(self, newAdderList):
         '''
             Merge peer adders list to our database
         '''
+        try:
             retVal = False
             if newAdderList != False:
                 for adder in newAdderList.split(','):
@@ -104,12 +115,20 @@ class OnionrUtils:
                     else:
                         logger.debug(adder + " is either our address or already in our DB")
             return retVal
+        except Exception as error:
+            logger.error('Failed to merge adders.', error=error)
+            return False
 
     def getMyAddress(self):
+        try:
             myAddressFile = open("data/hs/hostname", 'r')
             myAddress = myAddressFile.read()
             myAddressFile.close()
+
             return myAddress.strip()
+        except Exception as error:
+            logger.error('Failed to read my address.', error=error)
+            return ''
 
     def localCommand(self, command):
         '''
@@ -121,7 +140,8 @@ class OnionrUtils:
         # TODO: URL encode parameters, just as an extra measure. May not be needed, but should be added regardless.
         try:
             retData = requests.get('http://' + open('data/host.txt', 'r').read() + ':' + str(config.get('client')['port']) + '/client/?action=' + command + '&token=' + str(config.get('client')['client_hmac']) + '&timingToken=' + self.timingToken).text
-        except requests.ConnectionError:
+        except Exception as error:
+            logger.error('Failed to make local request (command: ' + str(command) + ').', error=error)
             retData = False
 
         return retData
@@ -179,6 +199,7 @@ class OnionrUtils:
         '''
             Return a sha3_256 hash of the blocks DB
         '''
+        try:
             with open(self._core.blockDB, 'rb') as data:
                 data = data.read()
             hasher = hashlib.sha3_256()
@@ -186,6 +207,8 @@ class OnionrUtils:
             dataHash = hasher.hexdigest()
 
             return dataHash
+        except Exception as error:
+            logger.error('Failed to get block DB hash.', error=error)
 
     def hasBlock(self, hash):
         '''
@@ -224,7 +247,9 @@ class OnionrUtils:
         return retVal
 
     def validatePubKey(self, key):
-        '''Validate if a string is a valid base32 encoded Ed25519 key'''
+        '''
+            Validate if a string is a valid base32 encoded Ed25519 key
+        '''
         retVal = False
         try:
             nacl.signing.SigningKey(seed=key, encoder=nacl.encoding.Base32Encoder)
@@ -241,6 +266,7 @@ class OnionrUtils:
         '''
             Validate if an address is a valid tor or i2p hidden service
         '''
+        try:
             idLength = len(id)
             retVal = True
             idNoDomain = ''
@@ -280,6 +306,8 @@ class OnionrUtils:
                     retVal = False
 
             return retVal
+        except:
+            return False
 
     def loadPMs(self):
         '''
@@ -298,8 +326,7 @@ class OnionrUtils:
                         try:
                             message = self._core._crypto.pubKeyDecrypt(message.replace('-pm-', ''), encodedData=True, anonymous=True)
                         except nacl.exceptions.CryptoError as e:
-                            #logger.debug('Unable to decrypt ' + i)
-                            #logger.debug(str(e))
+                            logger.debug('Unable to decrypt ' + i, error=e)
                             pass
                         else:
                             logger.info('Recieved message: ' + message.decode())