diff options
Diffstat (limited to 'contrib/linearize/linearize-data.py')
| -rwxr-xr-x | contrib/linearize/linearize-data.py | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/contrib/linearize/linearize-data.py b/contrib/linearize/linearize-data.py index d0417748fc..adea35dbd5 100755 --- a/contrib/linearize/linearize-data.py +++ b/contrib/linearize/linearize-data.py @@ -23,6 +23,12 @@ from collections import namedtuple settings = {} +##### Switch endian-ness ##### +def hex_switchEndian(s): + """ Switches the endianness of a hex string (in pairs of hex chars) """ + pairList = [s[i]+s[i+1] for i in range(0,len(s),2)] + return ''.join(pairList[::-1]) + def uint32(x): return x & 0xffffffffL @@ -69,17 +75,21 @@ def get_blk_dt(blk_hdr): dt_ym = datetime.datetime(dt.year, dt.month, 1) return (dt_ym, nTime) +# When getting the list of block hashes, undo any byte reversals. def get_block_hashes(settings): blkindex = [] f = open(settings['hashlist'], "r") for line in f: line = line.rstrip() + if settings['rev_hash_bytes'] == 'true': + line = hex_switchEndian(line) blkindex.append(line) print("Read " + str(len(blkindex)) + " hashes") return blkindex +# The block map shouldn't give or receive byte-reversed hashes. def mkblockmap(blkindex): blkmap = {} for height,hash in enumerate(blkindex): @@ -265,6 +275,12 @@ if __name__ == '__main__': settings[m.group(1)] = m.group(2) f.close() + # Force hash byte format setting to be lowercase to make comparisons easier. + # Also place upfront in case any settings need to know about it. + if 'rev_hash_bytes' not in settings: + settings['rev_hash_bytes'] = 'false' + settings['rev_hash_bytes'] = settings['rev_hash_bytes'].lower() + if 'netmagic' not in settings: settings['netmagic'] = 'f9beb4d9' if 'genesis' not in settings: @@ -295,9 +311,8 @@ if __name__ == '__main__': blkindex = get_block_hashes(settings) blkmap = mkblockmap(blkindex) + # Block hash map won't be byte-reversed. Neither should the genesis hash. if not settings['genesis'] in blkmap: print("Genesis block not found in hashlist") else: BlockDataCopier(settings, blkindex, blkmap).run() - - |