thomasv
12 years ago
5 changed files with 369 additions and 295 deletions
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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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config = {} |
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def get_info(): |
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return 'Aliases', _('Retrieve aliases using http.') |
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def init(self): |
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global config |
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config = self.config |
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self.aliases = config.get('aliases', {}) # aliases for addresses |
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self.authorities = config.get('authorities', {}) # trusted addresses |
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self.receipts = config.get('receipts',{}) # signed URIs |
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do_enable(self, is_enabled()) |
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def is_enabled(): |
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return config.get('use_aliases') is True |
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def is_available(): |
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return True |
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def toggle(gui): |
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enabled = not is_enabled() |
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config.set_key('use_aliases', enabled, True) |
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do_enable(gui, enabled) |
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return enabled |
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def do_enable(gui, enabled): |
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if enabled: |
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gui.set_hook('timer_actions', timer_actions) |
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gui.set_hook('set_url', set_url_hook) |
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gui.set_hook('update_contacts_tab', update_contacts_tab_hook) |
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gui.set_hook('update_completions', update_completions_hook) |
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gui.set_hook('create_contact_menu', create_contact_menu_hook) |
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else: |
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gui.unset_hook('timer_actions', timer_actions) |
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gui.unset_hook('set_url', set_url_hook) |
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gui.unset_hook('update_contacts_tab', update_contacts_tab_hook) |
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gui.unset_hook('update_completions', update_completions_hook) |
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gui.unset_hook('create_contact_menu', create_contact_menu_hook) |
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def timer_actions(self): |
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if self.payto_e.hasFocus(): |
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return |
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r = unicode( self.payto_e.text() ) |
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if r != self.previous_payto_e: |
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self.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 = get_alias(self, r, True, self.show_message, self.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.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_hook(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_hook(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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l.insertTopLevelItem(0,item) |
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item.setData(0,32,False) |
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item.setData(0,33,alias + ' <' + target + '>') |
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def update_completions_hook(self, l): |
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l[:] = l + self.aliases.keys() |
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def create_contact_menu_hook(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: show_contact_details(self, 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, 'Alias', msg, 'OK') |
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def delete_alias(self, x): |
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if self.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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