Work in progress on Label syncing

gui/gui_classic.py

@@ -273,6 +273,8 @@ class ElectrumWindow(QMainWindow):
         self.config = config
         self.init_plugins()
 
+        self.create_status_bar()
+
         self.wallet.interface.register_callback('updated', lambda: self.emit(QtCore.SIGNAL('update_wallet')))
         self.wallet.interface.register_callback('banner', lambda: self.emit(QtCore.SIGNAL('banner_signal')))
         self.wallet.interface.register_callback('disconnected', lambda: self.emit(QtCore.SIGNAL('update_status')))
@@ -295,7 +297,6 @@ class ElectrumWindow(QMainWindow):
         tabs.setMinimumSize(600, 400)
         tabs.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
         self.setCentralWidget(tabs)
-        self.create_status_bar()
 
         g = self.config.get("winpos-qt",[100, 100, 840, 400])
         self.setGeometry(g[0], g[1], g[2], g[3])
@@ -520,6 +521,9 @@ class ElectrumWindow(QMainWindow):
         text = unicode( item.text(2) )
         if text: 
             self.wallet.labels[tx_hash] = text
+            # Label changed
+            self.run_hook('label_changed',(self, str(tx_hash), text))
+
             item.setForeground(2, QBrush(QColor('black')))
         else:
             if s: self.wallet.labels.pop(tx_hash)
@@ -562,6 +566,7 @@ class ElectrumWindow(QMainWindow):
                     if old_addr != addr:
                         self.wallet.labels[addr] = text
                         changed = True
+                        self.run_hook('label_changed',(self, addr, text))
                 else:
                     print_error("Error: This is one of your aliases")
                     label = self.wallet.labels.get(addr,'')
@@ -1195,6 +1200,8 @@ class ElectrumWindow(QMainWindow):
         self.status_button = StatusBarButton( QIcon(":icons/status_disconnected.png"), _("Network"), lambda: self.network_dialog(self.wallet, self) ) 
         sb.addPermanentWidget( self.status_button )
 
+        self.run_hook('create_status_bar', (sb,))
+
         self.setStatusBar(sb)
         
     def go_lite(self):
@@ -1866,6 +1873,7 @@ class ElectrumWindow(QMainWindow):
         vbox = QVBoxLayout()
 
         tabs = QTabWidget(self)
+        self.settings_tab = tabs
         vbox.addWidget(tabs)
 
         tab1 = QWidget()
@@ -2040,6 +2048,8 @@ class ElectrumWindow(QMainWindow):
                     traceback.print_exc(file=sys.stdout)
             grid_plugins.setRowStretch(i+1,1)
 
+        self.run_hook('create_settings_tab', (self,tabs,))
+
         vbox.addLayout(ok_cancel_buttons(d))
         d.setLayout(vbox) 
 

icons.qrc

@@ -16,5 +16,6 @@
     <file>icons/switchgui.png</file>
     <file>icons/unconfirmed.png</file>
     <file>icons/network.png</file>
+    <file>icons/cloud.png</file>
   </qresource>
 </RCC>

plugins/labels.py

@@ -0,0 +1,118 @@
+from electrum.util import print_error
+import httplib, urllib
+import hashlib
+import json
+from urlparse import urlparse, parse_qs
+try:
+    import PyQt4
+except:
+    sys.exit("Error: Could not import PyQt4 on Linux systems, you may try 'sudo apt-get install python-qt4'")
+
+from PyQt4.QtGui import *
+from PyQt4.QtCore import *
+import PyQt4.QtCore as QtCore
+import PyQt4.QtGui as QtGui
+
+target_host = 'localhost:3000'
+auth_token = 'jEnsNBb5fAR5rYSBNYnR'
+
+def init(gui):
+    cloud_wallet = CloudWallet(gui.wallet)
+    gui.set_hook('create_settings_tab', add_settings_tab)
+    gui.set_hook('label_changed', label_changed)
+    cloud_wallet.full_pull()
+
+def wallet_id(wallet):
+    return hashlib.sha256(str(wallet.get_master_public_key())).digest().encode('hex')
+
+
+def label_changed(gui,item,label):
+    print "Label changed! Item: %s Label: %s label" % ( item, label)
+    global auth_token, target_host
+    hashed = hashlib.sha256(item).digest().encode('hex')
+    bundle = {"label": {"external_id": hashed, "text": label}}
+    params = json.dumps(bundle)
+    connection = httplib.HTTPConnection(target_host)
+    connection.request("POST", ("/api/wallets/%s/labels.json?auth_token=%s" % (wallet_id(gui.wallet), auth_token)), params, {'Content-Type': 'application/json'})
+
+    response = connection.getresponse()
+    if response.reason == httplib.responses[httplib.NOT_FOUND]:
+        return
+    response = json.loads(response.read())
+
+def add_settings_tab(gui, tabs):
+      cloud_tab = QWidget()
+      layout = QGridLayout(cloud_tab)
+      layout.addWidget(QLabel("API Key: "),0,0)
+      layout.addWidget(QLineEdit(), 0,2)
+
+      layout.addWidget(QLabel("Label sync options: "),1,0)
+      layout.addWidget(QPushButton("Force upload"), 1,1)
+      layout.addWidget(QPushButton("Force download"), 1,2)
+
+      tabs.addTab(cloud_tab, "Label cloud")
+
+def show():
+    print 'showing'
+
+def get_info():
+    return 'Label sync', "Syncs your labels with LabElectrum. Labels are not encrypted, transactions and addresses are however."
+
+def is_enabled():
+    return True
+
+def toggle(gui):
+    return is_enabled()
+
+
+class CloudWallet():
+    def __init__(self, wallet):
+        self.mpk = hashlib.sha256(str(wallet.get_master_public_key())).digest().encode('hex')
+        self.labels = wallet.labels
+        self.transactions = wallet.transactions
+
+        addresses = [] 
+        for k, account in wallet.accounts.items():
+            for address in account[0]:
+                addresses.append(address)
+
+        self.addresses = addresses
+
+
+    def full_pull(self):
+        global target_host, auth_token
+        connection = httplib.HTTPConnection(target_host)
+        connection.request("GET", ("/api/wallets/%s/labels.json?auth_token=%s" % (self.mpk, auth_token)),"", {'Content-Type': 'application/json'})
+        response = connection.getresponse()
+        if response.reason == httplib.responses[httplib.NOT_FOUND]:
+            return
+
+        response = json.loads(response.read())
+        for label in response:
+            for key in self.addresses:
+                target_hashed = hashlib.sha256(key).digest().encode('hex')
+                if label["external_id"] == target_hashed:
+                   if not self.labels.get(key):
+                       self.labels[key] = label["text"] 
+            for key, value in self.transactions.iteritems():
+                target_hashed = hashlib.sha256(key).digest().encode('hex')
+                if label["external_id"] == target_hashed:
+                   if not self.labels.get(key):
+                       self.labels[key] = label["text"] 
+
+    def full_push(self):
+        global target_host, auth_token
+
+        bundle = {"labels": {}}
+        for key, value in self.labels.iteritems():
+            hashed = hashlib.sha256(key).digest().encode('hex')
+            bundle["labels"][hashed] = value
+
+        params = json.dumps(bundle)
+        connection = httplib.HTTPConnection(target_host)
+        connection.request("POST", ("/api/wallets/%s/labels/batch.json?auth_token=%s" % (self.mpk, auth_token)), params, {'Content-Type': 'application/json'})
+
+        response = connection.getresponse()
+        if response.reason == httplib.responses[httplib.NOT_FOUND]:
+            return
+        response = json.loads(response.read())