Porting to Darkcoin TESTNET

Updated sources for Darkcoin TESTNET

README.md

@@ -1,3 +1,11 @@
+Darkcoin (DRK) Electrum-server for the Electrum client
+======================================================
+Porting of the Electrum server to Darkcoin.
+Since there is no Electrum client yet, current sources work in Darkcoin TESTNET.
+Install procedure isn't changed. Website to download the leveldb not available.
+Any DRK tips here: XxEUFhbXPbuX58o1AbDqZssFebyNuBosxb
+Thanks!
+
 Electrum-server for the Electrum client
 =========================================
 
@@ -11,12 +19,12 @@ Features
     described by Alan Reiner (see the 'ultimate blockchain
     compression' thread in the Bitcointalk forum)
 
-  * The server requires litecoind, leveldb and plyvel
+  * The server requires darkcoind, leveldb and plyvel
 
   * The server code is open source. Anyone can run a server, removing
     single points of failure concerns.
 
-  * The server knows which set of Litecoin addresses belong to the same
+  * The server knows which set of Darkcoin addresses belong to the same
     wallet, which might raise concerns about anonymity. However, it
     should be possible to write clients capable of using several
     servers.

backends/bitcoind/blockchain_processor.py

@@ -65,7 +65,7 @@ def __init__(self, config, shared):
                 self.bitcoind('getinfo')
                 break
             except:
-                print_log('cannot contact litecoind...')
+                print_log('cannot contact darkcoind...')
                 time.sleep(5)
                 continue
 
@@ -113,7 +113,7 @@ def bitcoind(self, method, params=[]):
         try:
             respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
         except:
-            print_log("error calling litecoind")
+            print_log("error calling darkcoind")
             traceback.print_exc(file=sys.stdout)
             self.shared.stop()
 
@@ -162,7 +162,12 @@ def init_headers(self, db_height):
                 height = height + 1
                 header = self.get_header(height)
                 if height > 1:
-                    assert prev_hash == header.get('prev_block_hash')
+                    #assert prev_hash == header.get('prev_block_hash')
+                    if prev_hash != header.get('prev_block_hash'):
+                        # The header in file seems to be orphaned, go back
+                        height -= 2
+                        prev_hash = self.hash_header(self.read_header(height))
+                        continue
                 self.write_header(header, sync=False)
                 prev_hash = self.hash_header(header)
                 if (height % 1000) == 0:
@@ -618,7 +623,7 @@ def getfullblock(self, block_hash):
         try:
             respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
         except:
-            print_log("litecoind error (getfullblock)")
+            print_log("darkcoind error (getfullblock)")
             traceback.print_exc(file=sys.stdout)
             self.shared.stop()
 
@@ -627,7 +632,7 @@ def getfullblock(self, block_hash):
         for ir in r:
             if ir['error'] is not None:
                 self.shared.stop()
-                print_log("Error: make sure you run litecoind with txindex=1; use -reindex if needed.")
+                print_log("Error: make sure you run darkcoind with txindex=1; use -reindex if needed.")
                 raise BaseException(ir['error'])
             rawtxdata.append(ir['result'])
         block['tx'] = rawtxdata

backends/bitcoind/storage.py

@@ -42,7 +42,8 @@ def __init__(self, config, shared, test_reorgs):
             #traceback.print_exc(file=sys.stdout)
             print_log('initializing database')
             self.height = 0
-            self.last_hash = '12a765e31ffd4059bada1e25190f6e98c99d9714d334efa41a195a7e7e04bfe2'
+            #mainnet self.last_hash = '00000ffd590b1485b3caadc19b22e6379c733355108f107a430458cdf3407ab6'
+            self.last_hash = '00000bafbc94add76cb75e2ec92894837288a481e5c005f6563d91623bf8bc2c'
             db_version = self.db_version
             # write root
             self.put_node('', {})

backends/irc/__init__.py

@@ -91,7 +91,7 @@ def run(self):
             try:
                 s.send('USER electrum 0 * :' + self.host + ' ' + ircname + '\n')
                 s.send('NICK ' + self.nick + '\n')
-                s.send('JOIN #electrum-ltc\n')
+                s.send('JOIN #electrum-drk\n')
                 t = 0
 
                 while not self.processor.shared.stopped():
@@ -142,7 +142,7 @@ def run(self):
 
                     if time.time() - t > 5*60:
                         #self.processor.push_response({'method': 'server.peers', 'params': [self.get_peers()]})
-                        s.send('NAMES #electrum-ltc\n')
+                        s.send('NAMES #electrum-drk\n')
                         t = time.time()
                         self.peers = {}
             except:

electrum.conf.sample

@@ -28,7 +28,10 @@ pruning_limit = 100
 
 [bitcoind]
 host = localhost
-port = 9332
-# user and password from litecoin.conf
+#testnet
+port = 19998
+#mainnet
+#port = 9998
+# user and password from darkcoin.conf
 user = user
 password = password

server.py

@@ -60,21 +60,21 @@ def create_config():
     config.set('server', 'password', '')
     config.set('server', 'irc', 'no')
     config.set('server', 'irc_nick', '')
-    config.set('server', 'coin', 'litecoin')
+    config.set('server', 'coin', 'darkcoin')
     config.set('server', 'datadir', '')
 
     # use leveldb as default
     config.set('server', 'backend', 'leveldb')
     config.add_section('leveldb')
-    config.set('leveldb', 'path_fulltree', '/dev/shm/electrum-ltc_db')
+    config.set('leveldb', 'path_fulltree', '/dev/shm/electrum-drk_db')
     config.set('leveldb', 'pruning_limit', '100')
 
     for path in ('/etc/', ''):
-        filename = path + 'electrum-ltc.conf'
+        filename = path + 'electrum-drk.conf'
         attempt_read_config(config, filename)
 
     try:
-        with open('/etc/electrum-ltc.banner', 'r') as f:
+        with open('/etc/electrum-drk.banner', 'r') as f:
             config.set('server', 'banner', f.read())
     except IOError:
         pass

start

@@ -7,7 +7,7 @@ if [[ $PID != *[!0-9]* ]]; then
 fi
 
 
-electrum_config="/etc/electrum-ltc.conf"
+electrum_config="/etc/electrum-drk.conf"
 
 if [ ! -f $electrum_config ]; then
     echo "$electrum_config does not exist"
@@ -26,13 +26,13 @@ rmdir $path --ignore-fail-on-non-empty
 
 if [ ! -d $path ]; then
     echo "Database not found in $path."
-    read -p "Do you want to download it from the Electrum-LTC foundry to $path ? " -n 1 -r
+    read -p "Do you want to download it from the Electrum-DRK foundry to $path ? " -n 1 -r
     echo
     if [[ $REPLY =~ ^[Yy]$ ]]; then
 	mkdir -p $path
-	wget -O - "http://foundry.electrum-ltc.org/leveldb-dump/electrum-fulltree-100-latest.tar.gz" | tar --extract --gunzip --strip-components 1 --directory $path --file -
+	wget -O - "http://foundry.electrum-drk.org/leveldb-dump/electrum-fulltree-100-latest.tar.gz" | tar --extract --gunzip --strip-components 1 --directory $path --file -
     fi
 fi
 
 echo "Starting server as daemon"
-nohup /usr/bin/python -u server.py &> /var/log/electrum-ltc.log &
+nohup /usr/bin/python -u server.py &> /var/log/electrum-drk.log &

utils/__init__.py

@@ -106,8 +106,8 @@ def hash_160(public_key):
 def public_key_to_bc_address(public_key):
     return hash_160_to_bc_address(hash_160(public_key))
 
-
-def hash_160_to_bc_address(h160, addrtype = 48):
+#111=testnet 76=mainnet
+def hash_160_to_bc_address(h160, addrtype = 111):
     if h160 == 'None':
         return 'None'
     vh160 = chr(addrtype) + h160