+ added POW announce for node (now POST)

* fixed bug where core hsAddress was not available on first startup

onionr/api.py

@@ -404,6 +404,46 @@ class API:
 
             resp = Response(resp)
             return resp
+
+        @app.route('/public/announce/', methods=['POST'])
+        def acceptAnnounce():
+            self.validateHost('public')
+            resp = 'failure'
+            powHash = ''
+            randomData = ''
+            newNode = ''
+            ourAdder = self._core.hsAddress.encode()
+            try:
+                newNode = request.form['node'].encode()
+            except KeyError:
+                logger.warn('No block specified for upload')
+                pass
+            else:
+                try:
+                    randomData = request.form['random']
+                    randomData = base64.b64decode(randomData)
+                except KeyError:
+                    logger.warn('No random data specified for upload')
+                else:
+                    nodes = newNode + self._core.hsAddress.encode()
+                    nodes = self._core._crypto.blake2bHash(nodes)
+                    powHash = self._core._crypto.blake2bHash(randomData + nodes)
+                    try:
+                        powHash = powHash.decode()
+                    except AttributeError:
+                        pass
+                    if powHash.startswith('0000'):
+                        try:
+                            newNode = newNode.decode()
+                        except AttributeError:
+                            pass
+                        if self._core.addAddress(newNode):
+                            resp = 'Success'
+                    else:
+                        logger.warn(newNode.decode() + ' failed to meet POW: ' + powHash)
+            resp = Response(resp)
+            return resp   
+
         @app.route('/public/')
         def public_handler():
             # Public means it is publicly network accessible
@@ -428,15 +468,6 @@ class API:
                 resp = Response(self._utils.getBlockDBHash())
             elif action == 'getBlockHashes':
                 resp = Response('\n'.join(self._core.getBlockList()))
-            elif action == 'announce':
-                if data != '':
-                    # TODO: require POW for this
-                    if self._core.addAddress(data):
-                        resp = Response('Success')
-                    else:
-                        resp = Response('')
-                else:
-                    resp = Response('')
             # setData should be something the communicator initiates, not this api
             elif action == 'getData':
                 resp = ''
@@ -488,6 +519,9 @@ class API:
             logger.info('Starting client on ' + self.host + ':' + str(bindPort) + '...', timestamp=False)
 
         try:
+            while len(self._core.hsAddress) == 0:
+                self._core.refreshFirstStartVars()
+                time.sleep(0.5)
             self.http_server = WSGIServer((self.host, bindPort), app)
             self.http_server.serve_forever()
         except KeyboardInterrupt:

onionr/communicator2.py

@@ -93,7 +93,7 @@ class OnionrCommunicatorDaemon:
         OnionrCommunicatorTimers(self, self.clearOfflinePeer, 58)
         OnionrCommunicatorTimers(self, self.lookupKeys, 60, requiresPeer=True)
         OnionrCommunicatorTimers(self, self.lookupAdders, 60, requiresPeer=True)
-        announceTimer = OnionrCommunicatorTimers(self, self.daemonTools.announceNode, 305, requiresPeer=True)
+        announceTimer = OnionrCommunicatorTimers(self, self.daemonTools.announceNode, 305, requiresPeer=True, maxThreads=1)
         cleanupTimer = OnionrCommunicatorTimers(self, self.peerCleanup, 300, requiresPeer=True)
 
         # set loop to execute instantly to load up peer pool (replaced old pool init wait)
@@ -446,17 +446,10 @@ class OnionrCommunicatorDaemon:
 
     def announce(self, peer):
         '''Announce to peers our address'''
-        announceCount = 0
-        announceAmount = 2
-        for peer in self.onlinePeers:
-            announceCount += 1
-            if self.peerAction(peer, 'announce', self._core.hsAddress) == 'Success':
-                logger.info('Successfully introduced node to ' + peer)
-                break
-            else:
-                if announceCount == announceAmount:
-                    logger.warn('Could not introduce node. Try again soon')
-                    break
+        if self.daemonTools.announceNode():
+            logger.info('Successfully introduced node to ' + peer)
+        else:
+            logger.warn('Could not introduce node.')
 
     def detectAPICrash(self):
         '''exit if the api server crashes/stops'''

onionr/core.py

@@ -78,6 +78,12 @@ class Core:
             sys.exit(1)
         return
 
+    def refreshFirstStartVars(self):
+        '''Hack to refresh some vars which may not be set on first start'''
+        if os.path.exists('data/hs/hostname'):
+            with open('data/hs/hostname', 'r') as hs:
+                self.hsAddress = hs.read().strip()
+
     def addPeer(self, peerID, powID, name=''):
         '''
             Adds a public key to the key database (misleading function name)

onionr/onionr.py

@@ -40,7 +40,7 @@ except ImportError:
     raise Exception("You need the PySocks module (for use with socks5 proxy to use Tor)")
 
 ONIONR_TAGLINE = 'Anonymous P2P Platform - GPLv3 - https://Onionr.VoidNet.Tech'
-ONIONR_VERSION = '0.1.1' # for debugging and stuff
+ONIONR_VERSION = '0.2.0' # for debugging and stuff
 ONIONR_VERSION_TUPLE = tuple(ONIONR_VERSION.split('.')) # (MAJOR, MINOR, VERSION)
 API_VERSION = '4' # increments of 1; only change when something fundemental about how the API works changes. This way other nodes know how to communicate without learning too much information about you.
 

onionr/onionrdaemontools.py

@@ -17,13 +17,40 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 '''
-import onionrexceptions, onionrpeers
+import onionrexceptions, onionrpeers, onionrproofs, base64
 class DaemonTools:
     def __init__(self, daemon):
             self.daemon = daemon
+            self.announceCache = {}
 
     def announceNode(self):
         '''Announce our node to our peers'''
-        peer = self.daemon.pickOnlinePeer()
-        self.daemon.peerAction(peer, 'announce', self.daemon._core.hsAddress)
-        self.daemon.decrementThreadCount('announceNode')
+        retData = False
+
+        # Announce to random online peers
+        for i in self.daemon.onlinePeers:
+            if not i in self.announceCache:
+                peer = i
+                break
+        else:
+            peer = self.daemon.pickOnlinePeer()
+
+        ourID = self.daemon._core.hsAddress.strip()
+
+        url = 'http://' + peer + '/public/announce/'
+        data = {'node': ourID}
+
+        combinedNodes = ourID + peer
+
+        if peer in self.announceCache:
+            data['random'] = self.announceCache[peer]
+        else:
+            proof = onionrproofs.DataPOW(combinedNodes, forceDifficulty=4)
+            data['random'] = base64.b64encode(proof.waitForResult()[1])
+            self.announceCache[peer] = data['random']
+
+        logger.info('Announcing node to ' + url)
+        if self.daemon._core._utils.doPostRequest(url, data) == 'Success':
+            retData = True
+        self.daemon.decrementThreadCount('announceNode')
+        return retData