Miguel Freitas
e52f2c2527
dhtproxy: tunnel DHT traffic into TCP connections
2014-06-26 16:38:43 -03:00
Miguel Freitas
102d172ca3
highly experimental soft checkpoint based on consensus
2014-01-19 22:25:22 -02:00
Miguel Freitas
6416fa5d58
another try to fix the infinite recursion triggered when the new (longer) chain
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contains an invalid transaction (due to older, buggy, twisterd or attacker).
i'm not entirely convinced that original bitcoin couldn't be attacked the same
way (51% is still needed, but crashing the client is pretty bad).
2014-01-19 00:53:15 -02:00
Miguel Freitas
19ff320d24
replace HaveTxIndex for GetTransaction. this is a more secure check since it also
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verifies if tx is part of current main chain. old test may cause problems for people
trying to reregister their usernames in case of reversal attack since nodes might incorrectly
refuse to accept/retransmit the new transaction.
2014-01-18 20:36:18 -02:00
Miguel Freitas
4c25acc6af
partialy revert changeset 77d1a4fb. fixed one case (that -reindex would fix anyway) but broke another one.
2014-01-13 09:40:18 -02:00
Miguel Freitas
055240b2a9
fix "CreateNewBlock() : ConnectBlock failed" due to "duplicate username".
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improve transaction collect in CreateNewBlock
2014-01-13 09:16:04 -02:00
Miguel Freitas
77d1a4fb7b
trying to fix infinite recursion in SetBestChain
2014-01-12 23:44:33 -02:00
Miguel Freitas
ba43f10e8f
move spamuser key validation from CheckTransation to ConnectBlock.
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reason: this is not context-independent validation.
2014-01-12 20:41:58 -02:00
Miguel Freitas
fbc7d9a77a
generalize checking if tx is in mainchain for GetTransaction
2014-01-12 19:29:33 -02:00
Miguel Freitas
9d5d203a0c
bugfix: weak checking for existing users (the transaction may exist in index only
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but the chain it belongs was invalidated) caused fork between users who erased their
block database from yesterday and those who didn't. improve the checking (test
if tx is actually in main chain). add another checkpoint. enforce.
2014-01-10 17:36:23 -02:00
Miguel Freitas
23cb6fbdb6
limit transaction size
2014-01-09 12:21:58 -02:00
Miguel Freitas
339c4a00ea
TODO cleanups
2013-12-30 14:15:45 -02:00
Miguel Freitas
fd404d0927
dumppubkey json return value must be hexstr
2013-12-08 18:24:25 -02:00
Miguel Freitas
33a04c7cf0
improve miner response to new blocks received to prevent stale blocks being generated
2013-11-30 18:48:04 -02:00
Miguel Freitas
d2d64bfed2
make sure strSpamUser is valid before using it to sign message
2013-11-30 18:34:34 -02:00
Miguel Freitas
b4d044f843
utf8 character counting to check message size < 140
2013-11-23 13:06:28 -02:00
Miguel Freitas
fb0802449c
implement index of partial usernames so search-as-you-type can work as expected with listusernamespartial
2013-11-17 22:56:06 -02:00
Miguel Freitas
3847d74f5d
fix GetTransaction old key search. how many more iterations do i need to get this thing right?
2013-11-14 01:22:19 -02:00
Miguel Freitas
30992b87c3
use scrypt hash function like litecoin
2013-11-14 00:57:51 -02:00
Miguel Freitas
2917054c80
change to version 0.9.00. sounds better than 0.8.99
2013-11-08 18:37:24 -02:00
Miguel Freitas
ceddb2781b
Check duplicate usernames within the same block
2013-11-06 18:25:24 -02:00
Miguel Freitas
4c99e80449
fix txindex inconsistency if twisterd crashes.
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txindex (user,-1) may point to a key in a block not yet linked to the chain.
2013-11-05 14:02:37 -02:00
Miguel Freitas
247ae657ef
remove failing assert when db is empty
2013-11-05 00:26:20 -02:00
Miguel Freitas
f81088be70
properly implement verification using keys that have been replaced.
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the basic idea is replace txIndex key with a pair (username,height).
height = -1 for the most up-to-date key, otherwise height = last block where previous key was valid.
by checking maxHeight and iterating backwards we can easily find the key to validate data from any given block number.
2013-11-05 00:00:11 -02:00
Miguel Freitas
0678ae169b
CreateSpamMsgTx fallback to "nobody"
2013-10-31 14:04:13 -02:00
Miguel Freitas
2c48386b4e
Properly implement spam signing and checking to prevent it from been used to impersonate users.
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"nobody" is an exception so default client could still send unauthenticated/anonymous spam
messages.
2013-10-31 14:02:29 -02:00
Miguel Freitas
7e57fb2fe4
mempool uses txhash again (instead of userhash). this is needed to fix key replacement.
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using userhash in mempool was a bad idea, it creates incompatibilities with merkle tree code etc.
now we are back to standard bitcoin protocol regarding tx and inv commands, possibly filter as well.
2013-10-07 19:33:29 -03:00
Miguel Freitas
b6db2327e4
add support (untested) for key replacement
2013-10-01 19:37:29 -03:00
Miguel Freitas
0df5c54166
promoted posts implemented
2013-10-01 08:57:51 -03:00
Miguel Freitas
a32bfec78f
sugestion: add language to the spam message text
2013-09-20 19:56:59 -03:00
miguel
6b9c27048e
partial untested torrent chages. will use leveldb for storage, no more multi-files per torrent, number of pieces may increase.
2013-08-17 20:12:44 -03:00
Miguel Freitas
82ea843b46
make block signature compatible with the rest
2013-08-09 10:14:43 -03:00
Miguel Freitas
3a1d772643
improve dht node added from bitcoin network peers
2013-08-07 20:20:03 -03:00
Miguel Freitas
78e97ac9dc
use the same message magic everywhere (to hash)
2013-08-04 11:36:44 -03:00
Miguel Freitas
9946d6ed72
mining fixes: add salt to instance and use correct username for signing
2013-07-25 12:06:18 -03:00
Miguel Freitas
ad712d5006
fix wrongly erasing of indextx with checklevel==3
2013-07-25 10:43:06 -03:00
Miguel Freitas
76f8a901a7
removing stuff
2013-07-24 20:28:23 -03:00
Miguel Freitas
26bbd5614f
remove GetCoins/SetCoins
2013-07-24 18:23:05 -03:00
Miguel Freitas
fe01fd01cb
create CScript overload for << string
2013-07-24 16:22:18 -03:00
Miguel Freitas
4d43b4a6f0
fix CreateSpamMsgTx signing (GetHash on CHashWriter cannot be used twice)
2013-07-24 16:08:25 -03:00
Miguel Freitas
84f796be7f
fix EraseTxIndex usage
2013-07-21 18:39:20 -03:00
Miguel Freitas
6e1c42e963
tx accepted!
2013-07-20 23:58:56 -03:00
Miguel Freitas
a6ff5511fa
test invalid userhash (might be an invalid tx received from network)
2013-07-20 20:00:30 -03:00
Miguel Freitas
d9fdca340c
implement CScript => string extraction, check username constraits, improve username hash
2013-07-20 19:54:48 -03:00
Miguel Freitas
623b80c061
fix missing nHeight field
2013-07-20 16:56:02 -03:00
Miguel Freitas
6ff04a0de2
fix genesis block hash
2013-07-20 15:35:57 -03:00
Miguel Freitas
0b753e0ce2
add nHeight to header for mining (a couple of offsets need +4 to work again)
2013-07-19 20:18:55 -03:00
Miguel Freitas
05c7d3f27d
fix/improve printf of created tx
2013-07-19 19:54:37 -03:00
Miguel Freitas
1c4f457312
remove stuff
2013-07-19 16:50:30 -03:00
Miguel Freitas
c13ab7e5d5
comment how/where tx userhashes are checked upon block acceptance
2013-07-19 16:39:12 -03:00
