restore from master public key (qt and command line)

electrum

@@ -90,6 +90,7 @@ def arg_parser():
     parser.add_option("-W", "--password", dest="password", default=None, help="set password for usage with commands (currently only implemented for create command, do not use it for longrunning gui session since the password is visible in /proc)")
     parser.add_option("-1", "--oneserver", action="store_true", dest="oneserver", default=False, help="connect to one server only")
     parser.add_option("--bip32", action="store_true", dest="bip32", default=False, help="bip32")
+    parser.add_option("--mpk", dest="mpk", default=False, help="master public key")
     return parser
 
 
@@ -265,6 +266,8 @@ if __name__ == '__main__':
             sys.exit("Error: Remove the existing wallet first!")
         if options.password is not None:
             password = options.password
+        elif cmd.name == 'restore' and options.mpk:
+            password = None
         else:
             password = prompt_password("Password (hit return if you do not wish to encrypt your wallet):")
 
@@ -282,12 +285,16 @@ if __name__ == '__main__':
         #    wallet.change_gap_limit(int(gap))
 
         if cmd.name == 'restore':
-            import getpass
-            seed = getpass.getpass(prompt="seed:", stream=None) if options.concealed else raw_input("seed:")
-            wallet = Wallet.from_seed(str(seed),storage)
-            if not wallet:
-                sys.exit("Error: Invalid seed")
-            wallet.save_seed(password)
+            if options.mpk:
+                wallet = Wallet.from_mpk(options.mpk, storage)
+            else:
+                import getpass
+                seed = getpass.getpass(prompt="seed:", stream=None) if options.concealed else raw_input("seed:")
+                wallet = Wallet.from_seed(str(seed),storage)
+                if not wallet:
+                    sys.exit("Error: Invalid seed")
+                wallet.save_seed(password)
+
             if not options.offline:
                 network = Network(config)
                 network.start()

gui/qt/installwizard.py

@@ -167,12 +167,6 @@ class InstallWizard(QDialog):
         mpk_e.setMaximumHeight(100)
         grid.addWidget(mpk_e, 0, 1)
 
-        label = QLabel(_("Chain")) 
-        #grid.addWidget(label, 1, 0)
-        chain_e = QTextEdit()
-        chain_e.setMaximumHeight(100)
-        #grid.addWidget(chain_e, 1, 1)
-
         vbox.addLayout(grid)
 
         vbox.addStretch(1)
@@ -183,8 +177,7 @@ class InstallWizard(QDialog):
             return None
 
         mpk = str(mpk_e.toPlainText()).strip()
-        chain = str(chain_e.toPlainText()).strip()
-        return mpk, chain
+        return mpk
 
 
     def network_dialog(self):
@@ -289,8 +282,7 @@ class InstallWizard(QDialog):
             mpk = self.mpk_dialog()
             if not mpk:
                 return
-            wallet.seed = ''
-            wallet.create_watching_only_wallet(mpk)
+            wallet = Wallet.from_mpk(mpk, self.storage)
 
         else: raise
                 

lib/wallet.py

@@ -1809,7 +1809,6 @@ class Wallet(object):
 
 
 
-
     @classmethod
     def from_seed(self, seed, storage):
         import mnemonic
@@ -1835,8 +1834,26 @@ class Wallet(object):
             w.init_seed(seed) #hex
         else:
             #assert is_seed(seed)
-            w = Wallet(storage)
+            w = NewWallet(storage)
             w.init_seed(seed)
 
+        return w
+
+
+    @classmethod
+    def from_mpk(self, s, storage):
+        try:
+            mpk, chain = s.split(':')
+        except:
+            mpk = s
+            chain = False
+
+        if chain:
+            w = NewWallet(storage)
+            w.create_watching_only_wallet(mpk, chain)
+        else:
+            w = OldWallet(storage)
+            w.seed = ''
+            w.create_watching_only_wallet(mpk)
 
         return w