200 lines
7.5 KiB
Python
200 lines
7.5 KiB
Python
import re
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import platform
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from decimal import Decimal
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from PyQt4.QtGui import *
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from PyQt4.QtCore import *
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import PyQt4.QtCore as QtCore
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import PyQt4.QtGui as QtGui
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from electrum_gui.qrcodewidget import QRCodeWidget
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from electrum_gui import bmp, pyqrnative
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from electrum_gui.i18n import _
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ALIAS_REGEXP = '^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$'
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from electrum_gui import BasePlugin
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class Plugin(BasePlugin):
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def __init__(self, gui):
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BasePlugin.__init__(self, gui, 'aliases', 'Aliases', _('Retrieve aliases using http.'))
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self.aliases = self.config.get('aliases', {}) # aliases for addresses
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self.authorities = self.config.get('authorities', {}) # trusted addresses
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self.receipts = self.config.get('receipts',{}) # signed URIs
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def timer_actions(self):
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if self.gui.payto_e.hasFocus():
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return
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r = unicode( self.gui.payto_e.text() )
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if r != self.gui.previous_payto_e:
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self.gui.previous_payto_e = r
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r = r.strip()
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if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', r):
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try:
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to_address = self.get_alias(r, True, self.gui.show_message, self.gui.question)
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except:
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return
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if to_address:
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s = r + ' <' + to_address + '>'
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self.gui.payto_e.setText(s)
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def get_alias(self, alias, interactive = False, show_message=None, question = None):
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try:
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target, signing_address, auth_name = read_alias(self, alias)
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except BaseException, e:
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# raise exception if verify fails (verify the chain)
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if interactive:
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show_message("Alias error: " + str(e))
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return
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print target, signing_address, auth_name
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if auth_name is None:
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a = self.aliases.get(alias)
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if not a:
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msg = "Warning: the alias '%s' is self-signed.\nThe signing address is %s.\n\nDo you want to add this alias to your list of contacts?"%(alias,signing_address)
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if interactive and question( msg ):
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self.aliases[alias] = (signing_address, target)
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else:
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target = None
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else:
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if signing_address != a[0]:
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msg = "Warning: the key of alias '%s' has changed since your last visit! It is possible that someone is trying to do something nasty!!!\nDo you accept to change your trusted key?"%alias
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if interactive and question( msg ):
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self.aliases[alias] = (signing_address, target)
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else:
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target = None
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else:
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if signing_address not in self.authorities.keys():
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msg = "The alias: '%s' links to %s\n\nWarning: this alias was signed by an unknown key.\nSigning authority: %s\nSigning address: %s\n\nDo you want to add this key to your list of trusted keys?"%(alias,target,auth_name,signing_address)
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if interactive and question( msg ):
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self.authorities[signing_address] = auth_name
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else:
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target = None
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if target:
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self.aliases[alias] = (signing_address, target)
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return target
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def read_alias(self, alias):
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import urllib
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m1 = re.match('([\w\-\.]+)@((\w[\w\-]+\.)+[\w\-]+)', alias)
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m2 = re.match('((\w[\w\-]+\.)+[\w\-]+)', alias)
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if m1:
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url = 'https://' + m1.group(2) + '/bitcoin.id/' + m1.group(1)
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elif m2:
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url = 'https://' + alias + '/bitcoin.id'
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else:
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return ''
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try:
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lines = urllib.urlopen(url).readlines()
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except:
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return ''
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# line 0
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line = lines[0].strip().split(':')
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if len(line) == 1:
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auth_name = None
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target = signing_addr = line[0]
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else:
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target, auth_name, signing_addr, signature = line
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msg = "alias:%s:%s:%s"%(alias,target,auth_name)
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print msg, signature
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EC_KEY.verify_message(signing_addr, signature, msg)
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# other lines are signed updates
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for line in lines[1:]:
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line = line.strip()
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if not line: continue
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line = line.split(':')
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previous = target
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print repr(line)
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target, signature = line
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EC_KEY.verify_message(previous, signature, "alias:%s:%s"%(alias,target))
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if not is_valid(target):
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raise ValueError("Invalid bitcoin address")
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return target, signing_addr, auth_name
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def set_url(self, url, show_message, question):
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payto, amount, label, message, signature, identity, url = util.parse_url(url)
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if signature:
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if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', identity):
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signing_address = get_alias(identity, True, show_message, question)
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elif is_valid(identity):
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signing_address = identity
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else:
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signing_address = None
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if not signing_address:
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return
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try:
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EC_KEY.verify_message(signing_address, signature, url )
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self.receipt = (signing_address, signature, url)
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except:
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show_message('Warning: the URI contains a bad signature.\nThe identity of the recipient cannot be verified.')
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address = amount = label = identity = message = ''
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if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', address):
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payto_address = get_alias(address, True, show_message, question)
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if payto_address:
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address = address + ' <' + payto_address + '>'
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return address, amount, label, message, signature, identity, url
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def update_contacts_tab(self, l):
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alias_targets = []
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for alias, v in self.aliases.items():
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s, target = v
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alias_targets.append(target)
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item = QTreeWidgetItem( [ target, alias, '-'] )
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item.setBackgroundColor(0, QColor('lightgray'))
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item.setData(0,32,False)
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item.setData(0,33,alias + ' <' + target + '>')
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l.insertTopLevelItem(0,item)
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def update_completions(self, l):
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l[:] = l + self.aliases.keys()
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def create_contact_menu(self, menu, item):
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label = unicode(item.text(1))
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if label in self.aliases.keys():
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addr = unicode(item.text(0))
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label = unicode(item.text(1))
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menu.addAction(_("View alias details"), lambda: self.show_contact_details(label))
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menu.addAction(_("Delete alias"), lambda: delete_alias(self, label))
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def show_contact_details(self, m):
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a = self.aliases.get(m)
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if a:
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if a[0] in self.authorities.keys():
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s = self.authorities.get(a[0])
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else:
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s = "self-signed"
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msg = _('Alias:')+' '+ m + '\n'+_('Target address:')+' '+ a[1] + '\n\n'+_('Signed by:')+' ' + s + '\n'+_('Signing address:')+' ' + a[0]
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QMessageBox.information(self.gui, 'Alias', msg, 'OK')
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def delete_alias(self, x):
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if self.gui.question(_("Do you want to remove")+" %s "%x +_("from your list of contacts?")):
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if x in self.aliases:
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self.aliases.pop(x)
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self.update_history_tab()
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self.update_contacts_tab()
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self.update_completions()
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