work on moving to vdf

src/communicatorutils/downloadblocks/__init__.py

@@ -25,6 +25,7 @@ import onionrcrypto
 import onionrstorage
 from onionrblocks import onionrblacklist
 from onionrblocks import storagecounter
+from onionrproofs import vdf
 from . import shoulddownload
 """
     This program is free software: you can redistribute it and/or modify
@@ -100,12 +101,7 @@ def download_blocks_from_communicator(shared_state: "TooMany"):
             except AttributeError:
                 pass
 
-            realHash = onionrcrypto.hashers.sha3_hash(content)
-            try:
-                realHash = realHash.decode() # bytes on some versions for some reason
-            except AttributeError:
-                pass
-            if realHash == blockHash:
+            if vdf.verify_vdf(blockHash, content):
                 #content = content.decode() # decode here because sha3Hash needs bytes above
                 metas = blockmetadata.get_block_metadata_from_data(content) # returns tuple(metadata, meta), meta is also in metadata
                 metadata = metas[0]
@@ -118,30 +114,10 @@ def download_blocks_from_communicator(shared_state: "TooMany"):
                 except onionrexceptions.DataExists:
                     metadata_validation_result = False
                 if metadata_validation_result: # check if metadata is valid, and verify nonce
-                    if onionrcrypto.cryptoutils.verify_POW(content): # check if POW is enough/correct
-                        logger.info('Attempting to save block %s...' % blockHash[:12])
-                        try:
-                            onionrstorage.set_data(content)
-                        except onionrexceptions.DataExists:
-                            logger.warn('Data is already set for %s ' % (blockHash,))
-                        except onionrexceptions.DiskAllocationReached:
-                            logger.error('Reached disk allocation allowance, cannot save block %s.' % (blockHash,))
-                            removeFromQueue = False
-                        else:
-                            blockmetadb.add_to_block_DB(blockHash, dataSaved=True) # add block to meta db
-                            blockmetadata.process_block_metadata(blockHash) # caches block metadata values to block database
-                            spawn(
-                                local_command,
-                                f'/daemon-event/upload_event',
-                                post=True,
-                                is_json=True,
-                                post_data={'block': blockHash}
-                            )
-                    else:
-                        logger.warn('POW failed for block %s.' % (blockHash,))
+                    save_block(blockHash, data)
                 else:
-                    if blacklist.inBlacklist(realHash):
-                        logger.warn('Block %s is blacklisted.' % (realHash,))
+                    if blacklist.inBlacklist(blockHash):
+                        logger.warn(f'Block {blockHash} is blacklisted.')
                     else:
                         logger.warn('Metadata for block %s is invalid.' % (blockHash,))
                         blacklist.addToDB(blockHash)
@@ -154,13 +130,6 @@ def download_blocks_from_communicator(shared_state: "TooMany"):
                     pass
                 # Punish peer for sharing invalid block (not always malicious, but is bad regardless)
                 onionrpeers.PeerProfiles(peerUsed).addScore(-50)
-                if tempHash != 'ed55e34cb828232d6c14da0479709bfa10a0923dca2b380496e6b2ed4f7a0253':
-                    # Dumb hack for 404 response from peer. Don't log it if 404 since its likely not malicious or a critical error.
-                    logger.warn(
-                        'Block hash validation failed for ' +
-                        blockHash + ' got ' + tempHash)
-                else:
-                    removeFromQueue = False # Don't remove from queue if 404
             if removeFromQueue:
                 try:
                     del kv.get('blockQueue')[blockHash] # remove from block queue both if success or false

src/db/__init__.py

@@ -0,0 +1,37 @@
+import dbm
+import time
+import os
+
+timeout = 120
+
+
+def _do_timeout(func, *args):
+    ts = 0
+    res = None
+    while True:
+        try:
+            res = func(*args)
+        except dbm.error:
+            if not ts:
+                ts = time.time()
+                continue
+            if time.time() - ts > timeout:
+                raise TimeoutError()
+            time.sleep(0.1)
+        else:
+            return res
+
+
+def set(db_path, key, value):
+    def _set(key, value):
+        with dbm.open(db_path, "c") as my_db:
+            my_db[key] = value
+    _do_timeout(_set, key, value)
+
+
+def get(db_path, key):
+    def _get(key):
+        with dbm.open(db_path, "c") as my_db:
+            return my_db[key]
+    return _do_timeout(_get, key)
+

src/filepaths/__init__.py

@@ -36,3 +36,5 @@ log_file = home + 'onionr.log'
 ephemeral_services_file = home + 'ephemeral-services.list'
 
 restarting_indicator = home + "is-restarting"
+
+block_database = home + "blocks.db"

src/onionrblocks/storagecounter.py

@@ -84,7 +84,7 @@ class StorageCounter:
         new_amount = amount + self.amount
         ret_data = new_amount
         if new_amount > config.get('allocations.disk', 2000000000):
-            ret_data = False
+            ret_data = 0
         else:
             self._update(new_amount)
         return ret_data

src/onionrproofs/__init__.py

@@ -12,6 +12,7 @@ from onionrutils import bytesconverter
 from onionrcrypto import hashers
 
 from .blocknoncestart import BLOCK_NONCE_START_INT
+from .vdf import create_vdf
 """
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by

src/onionrproofs/vdf.py

@@ -7,9 +7,37 @@ def _wrap_vdf_create(queue, block_data_bytes, rounds):
     queue.put(mimcvdf.vdf_create(block_data_bytes, rounds))
 
 
-def do_vdf(block_data_bytes):
+def _wrap_vdf_verify(queue, block_data_bytes, block_hash_hex, rounds):
+    queue.put(mimcvdf.vdf_verify(block_data_bytes, block_hash_hex, rounds))
+
+
+
+def rounds_for_bytes(int: byte_count):
+    return byte_count * 1000
+
+
+
+def create_vdf(block_data_bytes):
+    rounds = rounds_for_bytes(block_data_bytes)
     queue = multiprocessing.Queue()
-    vdf_proc = multiprocessing.Process(target=_wrap_vdf_create, args=(queue, block_data_bytes, 1000))
+    vdf_proc = multiprocessing.Process(
+        target=_wrap_vdf_create,
+        args=(queue, block_data_bytes, rounds))
     vdf_proc.start()
     vdf_proc.join()
     return queue.get()
+
+
+def verify_vdf(block_hash_hex, block_data_bytes):
+    rounds = rounds_for_bytes(block_data_bytes)
+    if rounds < 10 ** 6:
+        # >million rounds it starts to take long enough to warrant a subprocess
+        queue = multiprocessing.Queue()
+        vdf_proc = multiprocessing.Process(
+            target=_wrap_vdf_verify,
+            args=(queue, block_data_bytes, block_hash_hex, rounds))
+        vdf_proc.start()
+        vdf_proc.join()
+        return queue.get()
+    return mimcvdf.vdf_verify(block_data_bytes, block_hash_hex, rounds)
+

src/onionrstorage/setdata.py

@@ -31,9 +31,8 @@ from onionrtypes import BlockHash
 storage_counter = storagecounter.StorageCounter()
 
 
-def set_data(data) -> BlockHash:
+def set_data(data):
     """Set the data assciated with a hash."""
-    data = data
     dataSize = sys.getsizeof(data)
     nonce_hash = crypto.hashers.sha3_hash(
         bytesconverter.str_to_bytes(
@@ -50,7 +49,7 @@ def set_data(data) -> BlockHash:
     try:
         onionrstorage.getData(dataHash)
     except onionrexceptions.NoDataAvailable:
-        if storage_counter.add_bytes(dataSize) is not False:
+        if storage_counter.add_bytes(dataSize):
             onionrstorage.store(data, block_hash=dataHash)
             conn = sqlite3.connect(
                 dbfiles.block_meta_db, timeout=DATABASE_LOCK_TIMEOUT)