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path: root/src/consensus/tx_check.cpp
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2019-06-02Added comments referencing multiple CVEs in tests and production code.lucash-dev
This commit adds comments referencing multiple CVEs both in production and test code. CVEs covered in this commit: CVE-2010-5137 CVE-2010-5139 CVE-2010-5141 CVE-2012-1909 CVE-2012-2459 CVE-2012-3789 CVE-2018-17144
2019-05-02scripted-diff: Remove DoS calls to CValidationStateMatt Corallo
-BEGIN VERIFY SCRIPT- sed -i 's/\.DoS(\(.*\), REJECT_\(.*\), \(true\|false\)/.DoS(\1, REJECT_\2/' src/validation.cpp src/consensus/tx_verify.cpp src/consensus/tx_check.cpp sed -i 's/state.GetRejectCode(), state.GetRejectReason(), [^,]\+, state.GetDebugMessage())/state.GetRejectCode(), state.GetRejectReason(), state.GetDebugMessage())/' src/validation.cpp sed -i 's/\.DoS([^,]*, /.Invalid\(/' src/validation.cpp src/consensus/tx_verify.cpp src/consensus/tx_check.cpp -END VERIFY SCRIPT- Co-authored-by: Suhas Daftuar <sdaftuar@gmail.com>
2019-05-02[refactor] Add useful-for-dos "reason" field to CValidationStateMatt Corallo
This is a first step towards cleaning up our DoS interface - make validation return *why* something is invalid, and let net_processing figure out what that implies in terms of banning/disconnection/etc. Behavior change: peers will now be banned for providing blocks with premature coinbase spends. Co-authored-by: Anthony Towns <aj@erisian.com.au> Suhas Daftuar <sdaftuar@gmail.com>
2019-05-02Clean up banning levelsMatt Corallo
Compared with previous bans, the following changes are made: * Txn with empty vin/vout or null prevouts move from 10 DoS points to 100. * Loose transactions with a dependency loop now result in a ban instead of 10 DoS points. * Many pre-segwit soft-fork errors now result in a ban. Note: Transactions that violate soft-fork script flags since P2SH do not generally result in a ban. Also, banning behavior for invalid blocks is dependent on whether the node is validating with multiple script check threads, due to a long- standing bug. That inconsistency is still present after this commit. * Proof of work failure moves from 50 DoS points to a ban. * Blocks with timestamps under MTP now result in a ban, blocks too far in the future continue to *not* result in a ban. * Inclusion of non-final transactions in a block now results in a ban instead of 10 DoS points. Co-authored-by: Anthony Towns <aj@erisian.com.au>
2019-04-09[build] Move CheckTransaction from lib_server to lib_consensusJohn Newbery
CheckTransaction is a context-free function that does not require access to the blockchain or mempool. Move it from src/consensus/tx_verify in lib_server to a new unit src/consensus/tx_check in lib_consensus so that it can be called by non-server libraries.