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Fix broken multisig pubkey sorting 

The sort predicate is a boolean ordered-before value, but these are
returning the memcmp value directly, and thus returns true whenever the
pubkeys aren't equal.  This means:

- it isn't actually sorting.

- it can (and does) segfault for some inputs.
This commit is contained in:
Jason Rhinelander 2020-08-05 12:42:27 -03:00
parent 9414194b1e
commit 20f603c6be
1 changed files with 2 additions and 2 deletions
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4
src/wallet/wallet2.cpp
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@ -5058,7 +5058,7 @@ std::string wallet2::exchange_multisig_keys(const epee::wipeable_string &passwor
m_account.finalize_multisig(spend_public_key);
m_multisig_signers = signers;
std::sort(m_multisig_signers.begin(), m_multisig_signers.end(), [](const crypto::public_key &e0, const crypto::public_key &e1){ return memcmp(&e0, &e1, sizeof(e0)); });
std::sort(m_multisig_signers.begin(), m_multisig_signers.end(), [](const crypto::public_key &e0, const crypto::public_key &e1){ return memcmp(&e0, &e1, sizeof(e0)) < 0; });
++m_multisig_rounds_passed;
m_multisig_derivations.clear();
@ -13124,7 +13124,7 @@ size_t wallet2::import_multisig(std::vector<cryptonote::blobdata> blobs)
// sort by signer
if (!info.empty() && !info.front().empty())
{
std::sort(info.begin(), info.end(), [](const std::vector<tools::wallet2::multisig_info> &i0, const std::vector<tools::wallet2::multisig_info> &i1){ return memcmp(&i0[0].m_signer, &i1[0].m_signer, sizeof(i0[0].m_signer)); });
std::sort(info.begin(), info.end(), [](const std::vector<tools::wallet2::multisig_info> &i0, const std::vector<tools::wallet2::multisig_info> &i1){ return memcmp(&i0[0].m_signer, &i1[0].m_signer, sizeof(i0[0].m_signer)) < 0; });
}
// first pass to determine where to detach the blockchain