fixed broken random IP binding, work on improving code safety

.gitignore

@@ -19,6 +19,7 @@ core
 .vscode/*
 venv/*
 onionr/fs*
+onionr/tmp/*
 
 *.dll
 *.exe

README.md

@@ -110,7 +110,7 @@ Everyone is welcome to contribute. Help is wanted for the following:
     * Creation of a shared lib for use from other languages and faster proof-of-work
     * Android and IOS development
     * Windows and Mac support (already partially supported, testers needed)
-    * General bug fixes and development of new features
+    * Bug fixes and development of new features
 * Testing
 * Translations/localizations
 * UI/UX design

onionr/__init__.py

@@ -20,6 +20,7 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 '''
+
 # Set the user's locale for encoding reasons
 import locale 
 locale.setlocale(locale.LC_ALL, '')

onionr/config.py

@@ -118,7 +118,7 @@ def reload():
     try:
         with open(get_config_file(), 'r', encoding="utf8") as configfile:
             set_config(json.loads(configfile.read()))
-    except:
+    except (FileNotFoundError, json.JSONDecodeError) as e:
         pass
         #logger.debug('Failed to parse configuration file.')
 

onionr/coredb/blockmetadb/expiredblocks.py

@@ -26,10 +26,11 @@ def get_expired_blocks():
     c = conn.cursor()
     date = int(epoch.get_epoch())
 
-    execute = 'SELECT hash FROM hashes WHERE expire <= %s ORDER BY dateReceived;' % (date,)
+    compiled = (date,)
+    execute = 'SELECT hash FROM hashes WHERE expire <= ? ORDER BY dateReceived;'
 
     rows = list()
-    for row in c.execute(execute):
+    for row in c.execute(execute, compiled):
         for i in row:
             rows.append(i)
     conn.close()

onionr/coredb/blockmetadb/updateblockinfo.py

@@ -34,12 +34,14 @@ def update_block_info(hash, key, data):
         dateClaimed  - timestamp claimed inside the block, only as trustworthy as the block author is
         expire       - expire date for a block
     '''
-    if key not in ('dateReceived', 'decrypted', 'dataType', 'dataFound', 'dataSaved', 'sig', 'author', 'dateClaimed', 'expire'):
-        return False
+    if key not in ('dateReceived', 'decrypted', 'dataType', 'dataFound', 
+                  'dataSaved', 'sig', 'author', 'dateClaimed', 'expire'):
+        raise ValueError('Key must be in the allowed list')
 
     conn = sqlite3.connect(dbfiles.block_meta_db, timeout=30)
     c = conn.cursor()
     args = (data, hash)
+    # Unfortunately, not really possible
     c.execute("UPDATE hashes SET " + key + " = ? where hash = ?;", args)
     conn.commit()
     conn.close()

onionr/coredb/daemonqueue/__init__.py

@@ -86,10 +86,7 @@ def clear_daemon_queue():
     conn = sqlite3.connect(dbfiles.daemon_queue_db, timeout=30)
     c = conn.cursor()
 
-    try:
     c.execute('DELETE FROM commands;')
     conn.commit()
-    except:
-        pass
 
     conn.close()

onionr/coredb/keydb/transportinfo.py

@@ -66,7 +66,7 @@ def set_address_info(address, key, data):
     command = (data, address)
 
     if key not in ('address', 'type', 'knownPeer', 'speed', 'success', 'failure', 'powValue', 'lastConnect', 'lastConnectAttempt', 'trust', 'introduced'):
-        raise Exception("Got invalid database key when setting address info")
+        raise ValueError("Got invalid database key when setting address info, must be in whitelist")
     else:
         c.execute('UPDATE adders SET ' + key + ' = ? WHERE address=?', command)
         conn.commit()

onionr/coredb/keydb/userinfo.py

@@ -61,9 +61,8 @@ def set_peer_info(peer, key, data):
 
     command = (data, peer)
 
-    # TODO: validate key on whitelist
     if key not in ('id', 'name', 'pubkey', 'forwardKey', 'dateSeen', 'trust'):
-        raise Exception("Got invalid database key when setting peer info")
+        raise ValueError("Got invalid database key when setting peer info")
 
     c.execute('UPDATE peers SET ' + key + ' = ? WHERE id=?', command)
     conn.commit()

onionr/httpapi/apiutils/getblockdata.py

@@ -1,12 +1,13 @@
 import json
 import onionrblockapi
 from onionrutils import bytesconverter, stringvalidators
+import onionrexceptions
 class GetBlockData:
     def __init__(self, client_api_inst=None):
         return
     
     def get_block_data(self, bHash, decrypt=False, raw=False, headerOnly=False):
-        assert stringvalidators.validate_hash(bHash)
+        if not stringvalidators.validate_hash(bHash): raise onionrexceptions.InvalidHexHash("block hash not valid hash format")
         bl = onionrblockapi.Block(bHash)
         if decrypt:
             bl.decrypt()

onionr/httpapi/apiutils/setbindip.py

@@ -1,11 +1,28 @@
-import random, socket
+import gevent
+from gevent import socket, sleep
+import secrets, random
 import config, logger
+import os
+
+# Hacky monkey patch so we can bind random localhosts without gevent trying to switch with an empty hub
+socket.getfqdn = lambda n: n
+
+def _get_acceptable_random_number()->int:
+    """Return a cryptographically random number in the inclusive range (1, 255)"""
+    number = 0
+    while number == 0:
+        number = secrets.randbelow(0xFF)
+    return number
+
 def set_bind_IP(filePath=''):
     '''Set a random localhost IP to a specified file (intended for private or public API localhost IPs)'''
-
     if config.get('general.random_bind_ip', True):
-        hostOctets = [str(127), str(random.randint(0x02, 0xFF)), str(random.randint(0x02, 0xFF)), str(random.randint(0x02, 0xFF))]
+        hostOctets = []
+        for i in range(3):
+            hostOctets.append(str(_get_acceptable_random_number()))
+        hostOctets = ['127'] + hostOctets
         data = '.'.join(hostOctets)
+        
         # Try to bind IP. Some platforms like Mac block non normal 127.x.x.x
         s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         try: