3 from decimal import Decimal
5 from PyQt4.QtGui import *
6 from PyQt4.QtCore import *
7 import PyQt4.QtCore as QtCore
8 import PyQt4.QtGui as QtGui
10 from electrum_gui.qrcodewidget import QRCodeWidget
11 from electrum_gui import bmp, pyqrnative
12 from electrum_gui.i18n import _
15 ALIAS_REGEXP = '^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$'
21 return 'Aliases', _('Retrieve aliases using http.')
26 self.aliases = config.get('aliases', {}) # aliases for addresses
27 self.authorities = config.get('authorities', {}) # trusted addresses
28 self.receipts = config.get('receipts',{}) # signed URIs
29 do_enable(self, is_enabled())
32 return config.get('use_aliases') is True
39 enabled = not is_enabled()
40 config.set_key('use_aliases', enabled, True)
41 do_enable(gui, enabled)
45 def do_enable(gui, enabled):
47 gui.set_hook('timer_actions', timer_actions)
48 gui.set_hook('set_url', set_url_hook)
49 gui.set_hook('update_contacts_tab', update_contacts_tab_hook)
50 gui.set_hook('update_completions', update_completions_hook)
51 gui.set_hook('create_contact_menu', create_contact_menu_hook)
53 gui.unset_hook('timer_actions', timer_actions)
54 gui.unset_hook('set_url', set_url_hook)
55 gui.unset_hook('update_contacts_tab', update_contacts_tab_hook)
56 gui.unset_hook('update_completions', update_completions_hook)
57 gui.unset_hook('create_contact_menu', create_contact_menu_hook)
60 def timer_actions(self):
61 if self.payto_e.hasFocus():
63 r = unicode( self.payto_e.text() )
64 if r != self.previous_payto_e:
65 self.previous_payto_e = r
67 if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', r):
69 to_address = get_alias(self, r, True, self.show_message, self.question)
73 s = r + ' <' + to_address + '>'
74 self.payto_e.setText(s)
77 def get_alias(self, alias, interactive = False, show_message=None, question = None):
79 target, signing_address, auth_name = read_alias(self, alias)
80 except BaseException, e:
81 # raise exception if verify fails (verify the chain)
83 show_message("Alias error: " + str(e))
86 print target, signing_address, auth_name
89 a = self.aliases.get(alias)
91 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)
92 if interactive and question( msg ):
93 self.aliases[alias] = (signing_address, target)
97 if signing_address != a[0]:
98 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
99 if interactive and question( msg ):
100 self.aliases[alias] = (signing_address, target)
104 if signing_address not in self.authorities.keys():
105 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)
106 if interactive and question( msg ):
107 self.authorities[signing_address] = auth_name
112 self.aliases[alias] = (signing_address, target)
118 def read_alias(self, alias):
121 m1 = re.match('([\w\-\.]+)@((\w[\w\-]+\.)+[\w\-]+)', alias)
122 m2 = re.match('((\w[\w\-]+\.)+[\w\-]+)', alias)
124 url = 'https://' + m1.group(2) + '/bitcoin.id/' + m1.group(1)
126 url = 'https://' + alias + '/bitcoin.id'
130 lines = urllib.urlopen(url).readlines()
135 line = lines[0].strip().split(':')
138 target = signing_addr = line[0]
140 target, auth_name, signing_addr, signature = line
141 msg = "alias:%s:%s:%s"%(alias,target,auth_name)
143 EC_KEY.verify_message(signing_addr, signature, msg)
145 # other lines are signed updates
146 for line in lines[1:]:
148 if not line: continue
149 line = line.split(':')
152 target, signature = line
153 EC_KEY.verify_message(previous, signature, "alias:%s:%s"%(alias,target))
155 if not is_valid(target):
156 raise ValueError("Invalid bitcoin address")
158 return target, signing_addr, auth_name
161 def set_url_hook(self, url, show_message, question):
162 payto, amount, label, message, signature, identity, url = util.parse_url(url)
164 if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', identity):
165 signing_address = get_alias(identity, True, show_message, question)
166 elif is_valid(identity):
167 signing_address = identity
169 signing_address = None
170 if not signing_address:
173 EC_KEY.verify_message(signing_address, signature, url )
174 self.receipt = (signing_address, signature, url)
176 show_message('Warning: the URI contains a bad signature.\nThe identity of the recipient cannot be verified.')
177 address = amount = label = identity = message = ''
179 if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', address):
180 payto_address = get_alias(address, True, show_message, question)
182 address = address + ' <' + payto_address + '>'
184 return address, amount, label, message, signature, identity, url
188 def update_contacts_tab_hook(self, l):
190 for alias, v in self.aliases.items():
192 alias_targets.append(target)
193 item = QTreeWidgetItem( [ target, alias, '-'] )
194 item.setBackgroundColor(0, QColor('lightgray'))
195 l.insertTopLevelItem(0,item)
196 item.setData(0,32,False)
197 item.setData(0,33,alias + ' <' + target + '>')
201 def update_completions_hook(self, l):
202 l[:] = l + self.aliases.keys()
205 def create_contact_menu_hook(self, menu, item):
206 label = unicode(item.text(1))
207 if label in self.aliases.keys():
208 addr = unicode(item.text(0))
209 label = unicode(item.text(1))
210 menu.addAction(_("View alias details"), lambda: show_contact_details(self, label))
211 menu.addAction(_("Delete alias"), lambda: delete_alias(self, label))
214 def show_contact_details(self, m):
215 a = self.aliases.get(m)
217 if a[0] in self.authorities.keys():
218 s = self.authorities.get(a[0])
221 msg = _('Alias:')+' '+ m + '\n'+_('Target address:')+' '+ a[1] + '\n\n'+_('Signed by:')+' ' + s + '\n'+_('Signing address:')+' ' + a[0]
222 QMessageBox.information(self, 'Alias', msg, 'OK')
225 def delete_alias(self, x):
226 if self.question(_("Do you want to remove")+" %s "%x +_("from your list of contacts?")):
227 if x in self.aliases:
229 self.update_history_tab()
230 self.update_contacts_tab()
231 self.update_completions()