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fix computing hashes for duplicate messages. See #8258

This commit is contained in:
Yann Leboulanger 2016-02-20 15:59:01 +01:00
parent c5c1e5d235
commit 580cdb2723
1 changed files with 7 additions and 6 deletions
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13
src/common/connection_handlers_events.py
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@ -1449,15 +1449,16 @@ class DecryptedMessageReceivedEvent(nec.NetworkIncomingEvent, HelperEvent):
# ignore message duplicates
if self.msgtxt and self.id_ and self.jid:
self.msghash = hashlib.sha256("%s|%s|%s" % (
hashlib.sha256(str(self.msgtxt)).hexdigest(),
hashlib.sha256(str(self.id_)).hexdigest(),
hashlib.sha256(str(self.jid)).hexdigest())).digest()
self.msghash = hashlib.sha256(("%s|%s|%s" % (
hashlib.sha256(self.msgtxt.encode('utf-8')).hexdigest(),
hashlib.sha256(self.id_.encode('utf-8')).hexdigest(),
hashlib.sha256(self.jid.encode('utf-8')).hexdigest())).encode(
'utf-8')).digest()
if self.msghash in self.conn.received_message_hashes:
log.info("Ignoring duplicated message from '%s' with id '%s'" % (str(self.jid), str(self.id_)))
log.info("Ignoring duplicated message from '%s' with id '%s'" % (self.jid, self.id_))
return False
else:
log.debug("subhashes: msgtxt, id_, jid = ('%s', '%s', '%s')" % (hashlib.sha256(str(self.msgtxt)).hexdigest(), hashlib.sha256(str(self.id_)).hexdigest(), hashlib.sha256(str(self.jid)).hexdigest()))
log.debug("subhashes: msgtxt, id_, jid = ('%s', '%s', '%s')" % (hashlib.sha256(self.msgtxt.encode('utf-8')).hexdigest(), hashlib.sha256(self.id_.encode('utf-8')).hexdigest(), hashlib.sha256(self.jid.encode('utf-8')).hexdigest()))
self.conn.received_message_hashes.append(self.msghash)
# only record the last 20000 hashes (should be about 1MB [32 bytes per hash]
# and about 24 hours if you receive a message every 5 seconds)