src/bitmessageqt/__init__.py

@@ -14,7 +14,7 @@ except ImportError:
 from addresses import *
 import shared
 from bitmessageui import *
-from class_namecoin import *
+from class_namecoin import namecoinConnection
 from newaddressdialog import *
 from newsubscriptiondialog import *
 from regenerateaddresses import *

src/class_namecoin.py

@@ -1,17 +1,49 @@
+# Copyright (C) 2013 by Daniel Kraft <d@domob.eu>
+# This file is part of the Bitmessage project.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import base64
 import json
-from jsonrpc import ServiceProxy, JSONRPCException
+import socket
+
+# Error thrown when the RPC call returns an error.
+class RPCError (Exception):
+    error = None
+
+    def __init__ (self, data):
+        self.error = data
 
 # This class handles the Namecoin identity integration.
-
 class namecoinConnection (object):
+    user = None
+    password = None
+    host = None
+    port = None
+    bufsize = 4096
+    queryid = 1
 
     def __init__ (self):
-        user = "daniel"
-        password = "password"
-        host = "localhost"
-        port = "8336"
-        self.s = ServiceProxy("http://" + user + ":" + password
-                              + "@" + host + ":" + port)
+        self.user = "daniel"
+        self.password = "password"
+        self.host = "localhost"
+        self.port = "8336"
 
     # Query for the bitmessage address corresponding to the given identity
     # string.  If it doesn't contain a slash, id/ is prepended.  We return
@@ -23,24 +55,86 @@ class namecoinConnection(object):
             string = "id/" + string
 
         try:
-            res = self.s.name_show(string)
-        except JSONRPCException as err:
-            if err.error["code"] == -4:
-                return ("The name '" + string + "' was not found.", None)
+            res = self.callRPC ("name_show", [string])
+        except RPCError as exc:
+            if exc.error["code"] == -4:
+                return ("The name '%s' was not found." % string, None)
             else:
-                return ("The namecoin query failed ("
-                        + err.error["message"] + ")", None)
-        except:
+                return ("The namecoin query failed (%s)" % exc.error["message"],
+                        None)
+        except Exception as exc:
+            print "Namecoin query exception: %s" % str (exc)
             return ("The namecoin query failed.", None)
 
         try:
-            print res["value"]
             val = json.loads (res["value"])
         except:
-            return ("The name '" + string + "' has no valid JSON data.", None)
+            return ("The name '%s' has no valid JSON data." % string, None)
 
         if "bitmessage" in val:
             return (None, val["bitmessage"])
 
-        return ("The name '" + string
-                + "' has no associated Bitmessage address.", None)
+        return ("The name '%s' has no associated Bitmessage address." % string,
+                None)
+
+    # Helper routine that actually performs an JSON RPC call.
+    def callRPC (self, method, params):
+        data = {"method": method, "params": params, "id": self.queryid}
+        resp = self.queryHTTP (json.dumps (data))
+        val = json.loads (resp)
+
+        if val["id"] != self.queryid:
+            raise Exception ("ID mismatch in JSON RPC answer.")
+        self.queryid = self.queryid + 1
+
+        if val["error"] is not None:
+            raise RPCError (val["error"])
+
+        return val["result"]
+
+    # Query the server via HTTP.
+    def queryHTTP (self, data):
+        header = "POST / HTTP/1.1\n"
+        header += "User-Agent: bitmessage\n"
+        header += "Host: %s\n" % self.host
+        header += "Content-Type: application/json\n"
+        header += "Content-Length: %d\n" % len (data)
+        header += "Accept: application/json\n"
+        authstr = "%s:%s" % (self.user, self.password)
+        header += "Authorization: Basic %s\n" % base64.b64encode (authstr)
+
+        resp = self.queryServer ("%s\n%s" % (header, data))
+        lines = resp.split ("\r\n")
+        result = None
+        body = False
+        for line in lines:
+            if line == "" and not body:
+                body = True
+            elif body:
+                if result is not None:
+                    raise Exception ("Expected a single line in HTTP response.")
+                result = line
+
+        return result
+
+    # Helper routine sending data to the RPC server and returning the result.
+    def queryServer (self, data):
+        try:
+            s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
+            s.setsockopt (socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            s.connect ((self.host, int (self.port)))
+            s.sendall (data)
+            result = ""
+
+            while True:
+                tmp = s.recv (self.bufsize)
+                if not tmp:
+                  break
+                result += tmp
+
+            s.close ()
+
+            return result
+
+        except socket.error as exc:
+            raise Exception ("Socket error in RPC connection: %s" % str (exc))