711 lines
21 KiB
Python
711 lines
21 KiB
Python
# Electrum - lightweight Bitcoin client
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# Copyright (C) 2011 Thomas Voegtlin
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#
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# Permission is hereby granted, free of charge, to any person
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# obtaining a copy of this software and associated documentation files
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# (the "Software"), to deal in the Software without restriction,
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# including without limitation the rights to use, copy, modify, merge,
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# publish, distribute, sublicense, and/or sell copies of the Software,
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# and to permit persons to whom the Software is furnished to do so,
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# subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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import binascii
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import os, sys, re, json
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from collections import defaultdict
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from datetime import datetime
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from decimal import Decimal
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import traceback
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import urllib
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import threading
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import hmac
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import requests
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from .i18n import _
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import urllib.request, urllib.parse, urllib.error
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import queue
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def inv_dict(d):
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return {v: k for k, v in d.items()}
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is_bundle = getattr(sys, 'frozen', False)
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is_macOS = sys.platform == 'darwin'
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base_units = {'ZCL':8, 'mZCL':5, 'uZCL':2}
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fee_levels = [_('Within 25 blocks'), _('Within 10 blocks'), _('Within 5 blocks'), _('Within 2 blocks'), _('In the next block')]
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def normalize_version(v):
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return [int(x) for x in re.sub(r'(\.0+)*$','', v).split(".")]
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class NotEnoughFunds(Exception): pass
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class NoDynamicFeeEstimates(Exception):
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def __str__(self):
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return _('Dynamic fee estimates not available')
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class InvalidPassword(Exception):
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def __str__(self):
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return _("Incorrect password")
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# Throw this exception to unwind the stack like when an error occurs.
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# However unlike other exceptions the user won't be informed.
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class UserCancelled(Exception):
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'''An exception that is suppressed from the user'''
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pass
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class MyEncoder(json.JSONEncoder):
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def default(self, obj):
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from .transaction import Transaction
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if isinstance(obj, Transaction):
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return obj.as_dict()
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return super(MyEncoder, self).default(obj)
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class PrintError(object):
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'''A handy base class'''
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def diagnostic_name(self):
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return self.__class__.__name__
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def print_error(self, *msg):
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print_error("[%s]" % self.diagnostic_name(), *msg)
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def print_msg(self, *msg):
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print_msg("[%s]" % self.diagnostic_name(), *msg)
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class ThreadJob(PrintError):
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"""A job that is run periodically from a thread's main loop. run() is
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called from that thread's context.
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"""
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def run(self):
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"""Called periodically from the thread"""
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pass
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class DebugMem(ThreadJob):
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'''A handy class for debugging GC memory leaks'''
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def __init__(self, classes, interval=30):
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self.next_time = 0
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self.classes = classes
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self.interval = interval
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def mem_stats(self):
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import gc
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self.print_error("Start memscan")
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gc.collect()
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objmap = defaultdict(list)
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for obj in gc.get_objects():
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for class_ in self.classes:
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if isinstance(obj, class_):
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objmap[class_].append(obj)
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for class_, objs in objmap.items():
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self.print_error("%s: %d" % (class_.__name__, len(objs)))
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self.print_error("Finish memscan")
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def run(self):
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if time.time() > self.next_time:
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self.mem_stats()
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self.next_time = time.time() + self.interval
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class DaemonThread(threading.Thread, PrintError):
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""" daemon thread that terminates cleanly """
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def __init__(self):
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threading.Thread.__init__(self)
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self.parent_thread = threading.currentThread()
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self.running = False
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self.running_lock = threading.Lock()
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self.job_lock = threading.Lock()
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self.jobs = []
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def add_jobs(self, jobs):
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with self.job_lock:
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self.jobs.extend(jobs)
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def run_jobs(self):
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# Don't let a throwing job disrupt the thread, future runs of
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# itself, or other jobs. This is useful protection against
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# malformed or malicious server responses
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with self.job_lock:
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for job in self.jobs:
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try:
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job.run()
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except Exception as e:
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traceback.print_exc(file=sys.stderr)
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def remove_jobs(self, jobs):
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with self.job_lock:
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for job in jobs:
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self.jobs.remove(job)
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def start(self):
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with self.running_lock:
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self.running = True
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return threading.Thread.start(self)
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def is_running(self):
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with self.running_lock:
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return self.running and self.parent_thread.is_alive()
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def stop(self):
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with self.running_lock:
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self.running = False
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def on_stop(self):
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if 'ANDROID_DATA' in os.environ:
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import jnius
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jnius.detach()
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self.print_error("jnius detach")
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self.print_error("stopped")
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# TODO: disable
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is_verbose = True
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def set_verbosity(b):
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global is_verbose
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is_verbose = b
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def print_error(*args):
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if not is_verbose: return
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print_stderr(*args)
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def print_stderr(*args):
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args = [str(item) for item in args]
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sys.stderr.write(" ".join(args) + "\n")
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sys.stderr.flush()
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def print_msg(*args):
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# Stringify args
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args = [str(item) for item in args]
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sys.stdout.write(" ".join(args) + "\n")
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sys.stdout.flush()
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def json_encode(obj):
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try:
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s = json.dumps(obj, sort_keys = True, indent = 4, cls=MyEncoder)
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except TypeError:
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s = repr(obj)
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return s
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def json_decode(x):
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try:
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return json.loads(x, parse_float=Decimal)
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except:
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return x
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# taken from Django Source Code
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def constant_time_compare(val1, val2):
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"""Return True if the two strings are equal, False otherwise."""
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return hmac.compare_digest(to_bytes(val1, 'utf8'), to_bytes(val2, 'utf8'))
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# decorator that prints execution time
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def profiler(func):
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def do_profile(func, args, kw_args):
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n = func.__name__
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t0 = time.time()
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o = func(*args, **kw_args)
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t = time.time() - t0
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print_error("[profiler]", n, "%.4f"%t)
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return o
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return lambda *args, **kw_args: do_profile(func, args, kw_args)
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def android_ext_dir():
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import jnius
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env = jnius.autoclass('android.os.Environment')
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return env.getExternalStorageDirectory().getPath()
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def android_data_dir():
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import jnius
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PythonActivity = jnius.autoclass('org.kivy.android.PythonActivity')
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return PythonActivity.mActivity.getFilesDir().getPath() + '/data'
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def android_headers_dir():
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d = android_ext_dir() + '/org.electrum.electrum'
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if not os.path.exists(d):
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os.mkdir(d)
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return d
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def android_check_data_dir():
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""" if needed, move old directory to sandbox """
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ext_dir = android_ext_dir()
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data_dir = android_data_dir()
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old_electrum_dir = ext_dir + '/electrum'
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if not os.path.exists(data_dir) and os.path.exists(old_electrum_dir):
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import shutil
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new_headers_path = android_headers_dir() + '/blockchain_headers'
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old_headers_path = old_electrum_dir + '/blockchain_headers'
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if not os.path.exists(new_headers_path) and os.path.exists(old_headers_path):
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print_error("Moving headers file to", new_headers_path)
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shutil.move(old_headers_path, new_headers_path)
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print_error("Moving data to", data_dir)
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shutil.move(old_electrum_dir, data_dir)
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return data_dir
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def get_headers_dir(config):
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return android_headers_dir() if 'ANDROID_DATA' in os.environ else config.path
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def assert_bytes(*args):
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"""
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porting helper, assert args type
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"""
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try:
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for x in args:
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assert isinstance(x, (bytes, bytearray))
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except:
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print('assert bytes failed', list(map(type, args)))
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raise
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def assert_str(*args):
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"""
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porting helper, assert args type
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"""
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for x in args:
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assert isinstance(x, str)
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def to_string(x, enc):
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if isinstance(x, (bytes, bytearray)):
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return x.decode(enc)
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if isinstance(x, str):
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return x
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else:
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raise TypeError("Not a string or bytes like object")
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def to_bytes(something, encoding='utf8'):
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"""
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cast string to bytes() like object, but for python2 support it's bytearray copy
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"""
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if isinstance(something, bytes):
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return something
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if isinstance(something, str):
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return something.encode(encoding)
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elif isinstance(something, bytearray):
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return bytes(something)
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else:
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raise TypeError("Not a string or bytes like object")
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bfh = bytes.fromhex
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hfu = binascii.hexlify
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def bh2u(x):
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"""
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str with hex representation of a bytes-like object
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>>> x = bytes((1, 2, 10))
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>>> bh2u(x)
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'01020A'
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:param x: bytes
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:rtype: str
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"""
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return hfu(x).decode('ascii')
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def user_dir():
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if 'ANDROID_DATA' in os.environ:
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return android_check_data_dir()
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elif os.name == 'posix':
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return os.path.join(os.environ["HOME"], ".electrum-zcl")
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elif "APPDATA" in os.environ:
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return os.path.join(os.environ["APPDATA"], "Electrum-zcl")
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elif "LOCALAPPDATA" in os.environ:
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return os.path.join(os.environ["LOCALAPPDATA"], "Electrum-zcl")
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else:
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#raise Exception("No home directory found in environment variables.")
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return
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def format_satoshis_plain(x, decimal_point = 8):
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"""Display a satoshi amount scaled. Always uses a '.' as a decimal
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point and has no thousands separator"""
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scale_factor = pow(10, decimal_point)
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return "{:.8f}".format(Decimal(x) / scale_factor).rstrip('0').rstrip('.')
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def format_satoshis(x, is_diff=False, num_zeros = 0, decimal_point = 8, whitespaces=False):
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from locale import localeconv
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if x is None:
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return 'unknown'
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x = int(x) # Some callers pass Decimal
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scale_factor = pow (10, decimal_point)
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integer_part = "{:n}".format(int(abs(x) / scale_factor))
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if x < 0:
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integer_part = '-' + integer_part
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elif is_diff:
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integer_part = '+' + integer_part
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dp = localeconv()['decimal_point']
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fract_part = ("{:0" + str(decimal_point) + "}").format(abs(x) % scale_factor)
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fract_part = fract_part.rstrip('0')
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if len(fract_part) < num_zeros:
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fract_part += "0" * (num_zeros - len(fract_part))
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result = integer_part + dp + fract_part
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if whitespaces:
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result += " " * (decimal_point - len(fract_part))
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result = " " * (15 - len(result)) + result
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return result
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def timestamp_to_datetime(timestamp):
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try:
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return datetime.fromtimestamp(timestamp)
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except:
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return None
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def format_time(timestamp):
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date = timestamp_to_datetime(timestamp)
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return date.isoformat(' ')[:-3] if date else _("Unknown")
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# Takes a timestamp and returns a string with the approximation of the age
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def age(from_date, since_date = None, target_tz=None, include_seconds=False):
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if from_date is None:
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return "Unknown"
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from_date = datetime.fromtimestamp(from_date)
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if since_date is None:
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since_date = datetime.now(target_tz)
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td = time_difference(from_date - since_date, include_seconds)
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return td + " ago" if from_date < since_date else "in " + td
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def time_difference(distance_in_time, include_seconds):
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#distance_in_time = since_date - from_date
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distance_in_seconds = int(round(abs(distance_in_time.days * 86400 + distance_in_time.seconds)))
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distance_in_minutes = int(round(distance_in_seconds/60))
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if distance_in_minutes <= 1:
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if include_seconds:
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for remainder in [5, 10, 20]:
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if distance_in_seconds < remainder:
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return "less than %s seconds" % remainder
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if distance_in_seconds < 40:
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return "half a minute"
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elif distance_in_seconds < 60:
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return "less than a minute"
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else:
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return "1 minute"
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else:
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if distance_in_minutes == 0:
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return "less than a minute"
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else:
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return "1 minute"
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elif distance_in_minutes < 45:
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return "%s minutes" % distance_in_minutes
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elif distance_in_minutes < 90:
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return "about 1 hour"
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elif distance_in_minutes < 1440:
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return "about %d hours" % (round(distance_in_minutes / 60.0))
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elif distance_in_minutes < 2880:
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return "1 day"
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elif distance_in_minutes < 43220:
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return "%d days" % (round(distance_in_minutes / 1440))
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elif distance_in_minutes < 86400:
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return "about 1 month"
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elif distance_in_minutes < 525600:
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return "%d months" % (round(distance_in_minutes / 43200))
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elif distance_in_minutes < 1051200:
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return "about 1 year"
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else:
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return "over %d years" % (round(distance_in_minutes / 525600))
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# For raw json, append /insight-api-zcash
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mainnet_block_explorers = {
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'Zcl-explorer.com': ('http://zcl-explorer.com/insight/',
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{'tx': 'tx', 'addr': 'address'}),
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'zclzclzcl.com': ('http://zclzclzcl.com',
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{'tx': 'tx', 'addr': 'address'}),
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'Zcl-explorer.com - Alternate 1': ('http://as1.zcl-explorer.com',
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{'tx': 'tx', 'addr': 'address'}),
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'Zcl-explorer.com - Alternate 2': ('http://eu1.zcl-explorer.com',
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{'tx': 'tx', 'addr': 'address'}),
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'explorer.zclassic.org': ('http://explorer.zclassic.org',
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{'tx': 'tx', 'addr': 'address'}),
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'explorer1.zclassic.org': ('http://explorer1.zclassic.org',
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{'tx': 'tx', 'addr': 'address'})
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}
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#http://zcl-explorer.com/insight/
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#http://zclzclzcl.com
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#http://eu1.zcl-explorer.com
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#http://as1.zcl-explorer.com
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#http://explorer.zclassic.org
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#http://explorer1.zclassic.org
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# TODO zcl testnet block explorer
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testnet_block_explorers = {
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#'Blocktrail.com': ('https://www.blocktrail.com/tBTC',
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#{'tx': 'tx', 'addr': 'address'}),
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'system default': ('blockchain:',
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{'tx': 'tx', 'addr': 'address'})
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}
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def block_explorer_info():
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from . import bitcoin
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return testnet_block_explorers if bitcoin.NetworkConstants.TESTNET else mainnet_block_explorers
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def block_explorer(config):
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return config.get('block_explorer', 'Zcl-explorer.com')
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def block_explorer_tuple(config):
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return block_explorer_info().get(block_explorer(config))
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def block_explorer_URL(config, kind, item):
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be_tuple = block_explorer_tuple(config)
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if not be_tuple:
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return
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kind_str = be_tuple[1].get(kind)
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if not kind_str:
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return
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url_parts = [be_tuple[0], kind_str, item]
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return "/".join(url_parts)
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# URL decode
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#_ud = re.compile('%([0-9a-hA-H]{2})', re.MULTILINE)
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#urldecode = lambda x: _ud.sub(lambda m: chr(int(m.group(1), 16)), x)
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def parse_URI(uri, on_pr=None):
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from . import bitcoin
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from .bitcoin import COIN
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if ':' not in uri:
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if not bitcoin.is_address(uri):
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raise BaseException("Not a Zclassic address")
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return {'address': uri}
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u = urllib.parse.urlparse(uri)
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if u.scheme != 'bitcoin':
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raise BaseException("Not a bitcoin URI")
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address = u.path
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# python for android fails to parse query
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if address.find('?') > 0:
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address, query = u.path.split('?')
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pq = urllib.parse.parse_qs(query)
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else:
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pq = urllib.parse.parse_qs(u.query)
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for k, v in pq.items():
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if len(v)!=1:
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raise Exception('Duplicate Key', k)
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out = {k: v[0] for k, v in pq.items()}
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if address:
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if not bitcoin.is_address(address):
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raise BaseException("Invalid Zclassic address:" + address)
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out['address'] = address
|
|
if 'amount' in out:
|
|
am = out['amount']
|
|
m = re.match('([0-9\.]+)X([0-9])', am)
|
|
if m:
|
|
k = int(m.group(2)) - 8
|
|
amount = Decimal(m.group(1)) * pow( Decimal(10) , k)
|
|
else:
|
|
amount = Decimal(am) * COIN
|
|
out['amount'] = int(amount)
|
|
if 'message' in out:
|
|
out['message'] = out['message']
|
|
out['memo'] = out['message']
|
|
if 'time' in out:
|
|
out['time'] = int(out['time'])
|
|
if 'exp' in out:
|
|
out['exp'] = int(out['exp'])
|
|
if 'sig' in out:
|
|
out['sig'] = bh2u(bitcoin.base_decode(out['sig'], None, base=58))
|
|
|
|
r = out.get('r')
|
|
sig = out.get('sig')
|
|
name = out.get('name')
|
|
if on_pr and (r or (name and sig)):
|
|
def get_payment_request_thread():
|
|
from . import paymentrequest as pr
|
|
if name and sig:
|
|
s = pr.serialize_request(out).SerializeToString()
|
|
request = pr.PaymentRequest(s)
|
|
else:
|
|
request = pr.get_payment_request(r)
|
|
if on_pr:
|
|
on_pr(request)
|
|
t = threading.Thread(target=get_payment_request_thread)
|
|
t.setDaemon(True)
|
|
t.start()
|
|
|
|
return out
|
|
|
|
|
|
def create_URI(addr, amount, message):
|
|
from . import bitcoin
|
|
if not bitcoin.is_address(addr):
|
|
return ""
|
|
query = []
|
|
if amount:
|
|
query.append('amount=%s'%format_satoshis_plain(amount))
|
|
if message:
|
|
query.append('message=%s'%urllib.parse.quote(message))
|
|
p = urllib.parse.ParseResult(scheme='bitcoin', netloc='', path=addr, params='', query='&'.join(query), fragment='')
|
|
return urllib.parse.urlunparse(p)
|
|
|
|
|
|
# Python bug (http://bugs.python.org/issue1927) causes raw_input
|
|
# to be redirected improperly between stdin/stderr on Unix systems
|
|
#TODO: py3
|
|
def raw_input(prompt=None):
|
|
if prompt:
|
|
sys.stdout.write(prompt)
|
|
return builtin_raw_input()
|
|
|
|
import builtins
|
|
builtin_raw_input = builtins.input
|
|
builtins.input = raw_input
|
|
|
|
|
|
def parse_json(message):
|
|
# TODO: check \r\n pattern
|
|
n = message.find(b'\n')
|
|
if n==-1:
|
|
return None, message
|
|
try:
|
|
j = json.loads(message[0:n].decode('utf8'))
|
|
except:
|
|
j = None
|
|
return j, message[n+1:]
|
|
|
|
|
|
class timeout(Exception):
|
|
pass
|
|
|
|
import socket
|
|
import json
|
|
import ssl
|
|
import time
|
|
|
|
|
|
class SocketPipe:
|
|
def __init__(self, socket):
|
|
self.socket = socket
|
|
self.message = b''
|
|
self.set_timeout(0.1)
|
|
self.recv_time = time.time()
|
|
|
|
def set_timeout(self, t):
|
|
self.socket.settimeout(t)
|
|
|
|
def idle_time(self):
|
|
return time.time() - self.recv_time
|
|
|
|
def get(self):
|
|
while True:
|
|
response, self.message = parse_json(self.message)
|
|
if response is not None:
|
|
return response
|
|
try:
|
|
data = self.socket.recv(1024)
|
|
except socket.timeout:
|
|
raise timeout
|
|
except ssl.SSLError:
|
|
raise timeout
|
|
except socket.error as err:
|
|
if err.errno == 60:
|
|
raise timeout
|
|
elif err.errno in [11, 35, 10035]:
|
|
print_error("socket errno %d (resource temporarily unavailable)"% err.errno)
|
|
time.sleep(0.2)
|
|
raise timeout
|
|
else:
|
|
print_error("pipe: socket error", err)
|
|
data = b''
|
|
except:
|
|
traceback.print_exc(file=sys.stderr)
|
|
data = b''
|
|
|
|
if not data: # Connection closed remotely
|
|
return None
|
|
self.message += data
|
|
self.recv_time = time.time()
|
|
|
|
def send(self, request):
|
|
out = json.dumps(request) + '\n'
|
|
out = out.encode('utf8')
|
|
self._send(out)
|
|
|
|
def send_all(self, requests):
|
|
out = b''.join(map(lambda x: (json.dumps(x) + '\n').encode('utf8'), requests))
|
|
self._send(out)
|
|
|
|
def _send(self, out):
|
|
while out:
|
|
try:
|
|
sent = self.socket.send(out)
|
|
out = out[sent:]
|
|
except ssl.SSLError as e:
|
|
print_error("SSLError:", e)
|
|
time.sleep(0.1)
|
|
continue
|
|
except OSError as e:
|
|
print_error("OSError", e)
|
|
time.sleep(0.1)
|
|
continue
|
|
|
|
|
|
class QueuePipe:
|
|
|
|
def __init__(self, send_queue=None, get_queue=None):
|
|
self.send_queue = send_queue if send_queue else queue.Queue()
|
|
self.get_queue = get_queue if get_queue else queue.Queue()
|
|
self.set_timeout(0.1)
|
|
|
|
def get(self):
|
|
try:
|
|
return self.get_queue.get(timeout=self.timeout)
|
|
except queue.Empty:
|
|
raise timeout
|
|
|
|
def get_all(self):
|
|
responses = []
|
|
while True:
|
|
try:
|
|
r = self.get_queue.get_nowait()
|
|
responses.append(r)
|
|
except queue.Empty:
|
|
break
|
|
return responses
|
|
|
|
def set_timeout(self, t):
|
|
self.timeout = t
|
|
|
|
def send(self, request):
|
|
self.send_queue.put(request)
|
|
|
|
def send_all(self, requests):
|
|
for request in requests:
|
|
self.send(request)
|
|
|
|
|
|
def get_cert_path():
|
|
if is_bundle and is_macOS:
|
|
# set in ./electrum
|
|
return requests.utils.DEFAULT_CA_BUNDLE_PATH
|
|
return requests.certs.where()
|