be16f80abc
Any projects which want to use Hush code from now on will need to be licensed as GPLv3 or we will send the lawyers: https://www.softwarefreedom.org/ Notably, Komodo (KMD) is licensed as GPLv2 and is no longer compatible to receive code changes, without causing legal issues. MIT projects, such as Zcash, also cannot pull in changes from the Hush Full Node without permission from The Hush Developers, which may in some circumstances grant an MIT license on a case-by-case basis.
139 lines
4.3 KiB
Python
Executable File
139 lines
4.3 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2014 Wladimir J. van der Laan
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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'''
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Script to generate list of seed nodes for chainparams.cpp.
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This script expects two text files in the directory that is passed as an
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argument:
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nodes_main.txt
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nodes_test.txt
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These files must consist of lines in the format
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<ip>
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<ip>:<port>
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[<ipv6>]
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[<ipv6>]:<port>
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<onion>.onion
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0xDDBBCCAA (IPv4 little-endian old pnSeeds format)
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The output will be two data structures with the peers in binary format:
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static SeedSpec6 pnSeed6_main[]={
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...
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}
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static SeedSpec6 pnSeed6_test[]={
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...
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}
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These should be pasted into `src/chainparamsseeds.h`.
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'''
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from __future__ import print_function, division
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from base64 import b32decode
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from binascii import a2b_hex
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import sys, os
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import re
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# ipv4 in ipv6 prefix
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pchIPv4 = bytearray([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff])
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# tor-specific ipv6 prefix
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pchOnionCat = bytearray([0xFD,0x87,0xD8,0x7E,0xEB,0x43])
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def name_to_ipv6(addr):
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if len(addr)>6 and addr.endswith('.onion'):
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vchAddr = b32decode(addr[0:-6], True)
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if len(vchAddr) != 16-len(pchOnionCat):
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raise ValueError('Invalid onion %s' % s)
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return pchOnionCat + vchAddr
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elif '.' in addr: # IPv4
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return pchIPv4 + bytearray((int(x) for x in addr.split('.')))
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elif ':' in addr: # IPv6
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sub = [[], []] # prefix, suffix
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x = 0
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addr = addr.split(':')
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for i,comp in enumerate(addr):
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if comp == '':
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if i == 0 or i == (len(addr)-1): # skip empty component at beginning or end
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continue
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x += 1 # :: skips to suffix
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assert(x < 2)
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else: # two bytes per component
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val = int(comp, 16)
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sub[x].append(val >> 8)
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sub[x].append(val & 0xff)
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nullbytes = 16 - len(sub[0]) - len(sub[1])
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assert((x == 0 and nullbytes == 0) or (x == 1 and nullbytes > 0))
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return bytearray(sub[0] + ([0] * nullbytes) + sub[1])
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elif addr.startswith('0x'): # IPv4-in-little-endian
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return pchIPv4 + bytearray(reversed(a2b_hex(addr[2:])))
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else:
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raise ValueError('Could not parse address %s' % addr)
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def parse_spec(s, defaultport):
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match = re.match('\[([0-9a-fA-F:]+)\](?::([0-9]+))?$', s)
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if match: # ipv6
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host = match.group(1)
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port = match.group(2)
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elif s.count(':') > 1: # ipv6, no port
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host = s
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port = ''
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else:
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(host,_,port) = s.partition(':')
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if not port:
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port = defaultport
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else:
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port = int(port)
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host = name_to_ipv6(host)
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return (host,port)
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def process_nodes(g, f, structname, defaultport):
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g.write('static SeedSpec6 %s[] = {\n' % structname)
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first = True
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for line in f:
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comment = line.find('#')
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if comment != -1:
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line = line[0:comment]
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line = line.strip()
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if not line:
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continue
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if not first:
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g.write(',\n')
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first = False
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(host,port) = parse_spec(line, defaultport)
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hoststr = ','.join(('0x%02x' % b) for b in host)
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g.write(' {{%s}, %i}' % (hoststr, port))
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g.write('\n};\n')
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def main():
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if len(sys.argv)<2:
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print(('Usage: %s <path_to_nodes_txt>' % sys.argv[0]), file=sys.stderr)
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exit(1)
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g = sys.stdout
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indir = sys.argv[1]
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g.write('#ifndef BITCOIN_CHAINPARAMSSEEDS_H\n')
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g.write('#define BITCOIN_CHAINPARAMSSEEDS_H\n')
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g.write('/**\n')
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g.write(' * List of fixed seed nodes for the bitcoin network\n')
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g.write(' * AUTOGENERATED by contrib/seeds/generate-seeds.py\n')
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g.write(' *\n')
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g.write(' * Each line contains a 16-byte IPv6 address and a port.\n')
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g.write(' * IPv4 as well as onion addresses are wrapped inside a IPv6 address accordingly.\n')
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g.write(' */\n')
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with open(os.path.join(indir,'nodes_main.txt'),'r') as f:
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process_nodes(g, f, 'pnSeed6_main', 8233)
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g.write('\n')
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with open(os.path.join(indir,'nodes_test.txt'),'r') as f:
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process_nodes(g, f, 'pnSeed6_test', 18233)
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g.write('#endif // BITCOIN_CHAINPARAMSSEEDS_H\n')
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if __name__ == '__main__':
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main()
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