fix linearization tool to make it work with Dash

contrib/linearize/README.md

@@ -1,6 +1,10 @@
 # Linearize
 Construct a linear, no-fork, best version of the blockchain.
 
+## Step 0: Install dash_hash
+
+https://github.com/UdjinM6/dash_hash
+
 ## Step 1: Download hash list
 
    $ ./linearize-hashes.py linearize.cfg > hashlist.txt
@@ -20,13 +24,12 @@ Required configuration file settings:
 * "input": bitcoind blocks/ directory containing blkNNNNN.dat
 * "hashlist": text file containing list of block hashes, linearized-hashes.py
 output.
-* "output_file": bootstrap.dat
-      or
-* "output": output directory for linearized blocks/blkNNNNN.dat output
+* "output_file" for bootstrap.dat or "output" for output directory for linearized blocks/blkNNNNN.dat output
 
 Optional config file setting for linearize-data:
-* "netmagic": network magic number
-* "max_out_sz": maximum output file size (default 1000*1000*1000)
+* "netmagic": network magic number (default is 'cee2caff', testnet)
+* "genesis": genesis block hash (default is '00000bafbc94add76cb75e2ec92894837288a481e5c005f6563d91623bf8bc2c', testnet)
+* "max_out_sz": maximum output file size (default 100 \* 1000 \* 1000)
 * "split_timestamp": Split files when a new month is first seen, in addition to
 reaching a maximum file size.
 * "file_timestamp": Set each file's last-modified time to that of the

contrib/linearize/example-linearize-testnet.cfg

@@ -0,0 +1,20 @@
+
+# bitcoind RPC settings (linearize-hashes)
+rpcuser=someuser
+rpcpassword=somepassword
+host=127.0.0.1
+port=19998
+
+# bootstrap.dat hashlist settings (linearize-hashes)
+max_height=3130000
+
+# bootstrap.dat input/output settings (linearize-data)
+netmagic=cee2caff
+input=/home/example/.dash/testnet3/blocks
+output_file=/home/example/Downloads/bootstrap.dat
+hashlist=hashlist.txt
+split_year=1
+genesis=00000bafbc94add76cb75e2ec92894837288a481e5c005f6563d91623bf8bc2c
+
+# Maxmimum size in bytes of out-of-order blocks cache in memory
+out_of_order_cache_sz = 10000000

contrib/linearize/example-linearize.cfg

@@ -6,14 +6,15 @@ host=127.0.0.1
 port=9998
 
 # bootstrap.dat hashlist settings (linearize-hashes)
-max_height=313000
+max_height=3130000
 
 # bootstrap.dat input/output settings (linearize-data)
-netmagic=f9beb4d9
-input=/home/example/.bitcoin/blocks
+netmagic=bf0c6bbd
+input=/home/example/.dash/blocks
 output_file=/home/example/Downloads/bootstrap.dat
 hashlist=hashlist.txt
 split_year=1
+genesis=00000ffd590b1485b3caadc19b22e6379c733355108f107a430458cdf3407ab6
 
 # Maxmimum size in bytes of out-of-order blocks cache in memory
-out_of_order_cache_sz = 100000000
+out_of_order_cache_sz = 10000000

contrib/linearize/linearize-data.py

@@ -16,6 +16,7 @@
 import httplib
 import sys
 import hashlib
+import dash_hash
 import datetime
 import time
 from collections import namedtuple
@@ -44,15 +45,17 @@ def wordreverse(in_buf):
 	return ''.join(out_words)
 
 def calc_hdr_hash(blk_hdr):
-	hash1 = hashlib.sha256()
-	hash1.update(blk_hdr)
-	hash1_o = hash1.digest()
+	#hash1 = hashlib.sha256()
+	#hash1.update(blk_hdr)
+	#hash1_o = hash1.digest()
 
-	hash2 = hashlib.sha256()
-	hash2.update(hash1_o)
-	hash2_o = hash2.digest()
+	#hash2 = hashlib.sha256()
+	#hash2.update(hash1_o)
+	#hash2_o = hash2.digest()
 
-	return hash2_o
+	#return hash2_o
+        pow_hash = dash_hash.getPoWHash(blk_hdr)
+        return pow_hash
 
 def calc_hash_str(blk_hdr):
 	hash = calc_hdr_hash(blk_hdr)
@@ -264,7 +267,9 @@ def run(self):
 	f.close()
 
 	if 'netmagic' not in settings:
-		settings['netmagic'] = 'f9beb4d9'
+		settings['netmagic'] = 'cee2caff'
+	if 'genesis' not in settings:
+		settings['genesis'] = '00000bafbc94add76cb75e2ec92894837288a481e5c005f6563d91623bf8bc2c'
 	if 'input' not in settings:
 		settings['input'] = 'input'
 	if 'hashlist' not in settings:
@@ -291,9 +296,8 @@ def run(self):
 	blkindex = get_block_hashes(settings)
 	blkmap = mkblockmap(blkindex)
 
-	if not "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f" in blkmap:
-		print("not found")
+	if not settings['genesis'] in blkmap:
+		print("genesis not found")
 	else:
 		BlockDataCopier(settings, blkindex, blkmap).run()
 
-