now that witness script data is saved into the tx/psbt which is
serialized across the wire, there's no reason to use witscript to do
this. good bye witscript!
Move all psbt creation into single method, new_psbt
note that if a psbt is init'd for a transaction that's
deserialized with scripts etc already attached, then set_global_tx
will fail. instead, we empty all of this out first.
if the tx is being re-init'd from a tx source that had a psbt attached
(e.g. fromwire_) then the script/witness data will get populated
appropriatel from there.
If we fail to unmarshal the tx (shouldn't happen, but...) we must
not dereference NULL.
Also tighten the check: towire_ must send 0 or all inputs.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It returns NULL, so you can simply `return fromwire_fail(...)`
if you want to return NULL in this case. Use that more.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Since we now over-write the wally malloc/free functions, we need to do
so for tests as well. Here we pull up all of the common setup/teardown
logic into a separate place, and update the tests that use libwally to
use the new common_setup core
Changelog-None
We did this originally because these types are referred to in the bolts, and we
had no way of injecting the correct include lines into those. Now we do, so
there's less excuse for this.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Transactions that we 'get' from bitciond don't have the input values
available on the transaction; for these cases we'll sum up the inputs
amounts using a different data source than the transaction's
`input_amounts`. So we need to expose it here.
We roll the `elements_add_fee_output` function and the cropping of
overallocated arrays into the `bitcoin_tx_finalize` function. This is supposed
to be the final cleanup and compaction step before a tx can be sent to bitcoin
or passed off to other daemons.
This is the cleanup promised in #3491
This is a common thing to do, so create a macro.
Unfortunately, it still needs the type arg, because the paramter may
be const, and the return cannot be, and C doesn't have a general
"(-const)" cast.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This sets the nLockTime to the tip (and accordingly each input's nSequence to
0xfffffffe) for withdrawal transactions.
Even if the anti fee-sniping argument might not be valid until some time yet,
this makes our regular wallet transactions far less distinguishable from
bitcoind's ones since it now defaults to using native Segwit transactions
(like us). Moreover other wallets are likely to implement this (if they
haven't already).
Changelog-Added: wallet: withdrawal transactions now sets nlocktime to the current tip.
Since we now compute the hash while deserializing the block header we can now
just use it, no reason to serialize the header just to hash it again. This
also allows us to throw away all the added dynafed fields in the next commit
instead of having to carry them around.
This avoids having to re-serialize the block header just to compute the
hash. It also frees us from having to carry around all the details in the
header and we can hand around a minimal version.
This avoids having to re-serialize the block header just to compute the
hash. It also frees us from having to carry around all the details in the
header and we can hand around a minimal version.
We updated the protocol spec tests to verify a sig from a hash
and a private key; this updates mkcommit + mkgossip utilities
to print out the procotol compatible SIG() notation for all signatures.
--verbose will print a computed signature and more data as well.
Also adds --verbose flag to mkgossip.
Changelog-None
this is unnecessary, and actually severely limits the functionality
of `wally_tx_add_input`, which will expand the allocated input
length if there's not enough room for the additional input
```external/libwally-core/src/transaction.c
if (tx->num_inputs >= tx->inputs_allocation_len) {
/* Expand the inputs array */
struct wally_tx_input *p;
p = realloc_array(tx->inputs, tx->inputs_allocation_len,
tx->num_inputs + 1, sizeof(*tx->inputs));
...
tx->inputs = p;
tx->inputs_allocation_len += 1;
```
Currently the only source for amount_asset is the value getter on a tx output,
and we don't hand it too far around (mainly ignoring it if it isn't the
chain's main currency). Eventually we could bubble them up to the wallet, use
them to select outputs or actually support assets in the channels.
Since we don't hand them around too widely I thought it was ok for them to be
pass-by-value rather than having to allocate them and pass them around by
reference. They're just 41 bytes currently so the overhead should be ok.
Signed-off-by: Christian Decker <@cdecker>
lisa neigut
Rusty Russell
Christian Decker
Ken Sedgwick
darosior
gorazdko
Yash Bhutwala