don't ban peers when loading pre-overwinter blocks
Addresses #3399. If we see an invalid transaction (from our peers who are up to date, post-overwinter) during initial block download, don't invoke DoS (logging messages, blocking these peers). Instead, simply ignore the transaction.
This reduces the amount of information that is leaked by the choice of anchor.
In future we will make a protocol change to enforce that all inputs use the
same anchor.
Before Sapling activates, hashFinalSaplingRoot is 0x0, which is
not a valid anchor. After Sapling activates, the empty root value
of 0x3e49... is a valid anchor.
Sapling note plaintext (encryption and decryption)
Add encryption and decryption of SaplingNotePlaintext and SaplingOutgoingPlaintext classes.
This is part of #3061 to add Sapling note functionality.
Split out methods to every module, apart from 'help' and 'stop' which
are implemented in rpcserver.cpp itself.
- This makes it easier to add or remove RPC commands - no longer everything that includes
rpcserver.h has to be rebuilt when there's a change there.
- Cleans up `rpc/server.h` by getting rid of the huge cluttered list of function definitions.
- Removes most of the bitcoin-specific code from rpcserver.cpp and .h.
Continues #7307 for the non-wallet.
add extra help how to enable experimental features
Closes#2728. When the user attempts to execute a disabled experimental RPC, print some nice text explaining how to enable the RPC (either command-line or adding lines to zcash.conf).
Fix absurd fee bug reported in #3281, with tests
This was ported from the Hush `absurd_fee_bug` PR: https://github.com/MyHush/hush/pull/136
Tests executed with `./qa/pull-tester/rpc-tests.sh wallet` and pass on Ubuntu 16.04. Some tests were added for previously untested behavior as well.
Closes#3281.
Add change indicator
This adds to the json returned when calling z_listreceivedbyaddress and z_listuspent an additional field entitiled 'change' which will be either true or false depending on whether or not the note was change from another transaction.
