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76 lines
2.0 KiB
76 lines
2.0 KiB
#include "common/psbt_internal.h"
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#include <common/psbt_open.h>
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#include <wally_psbt.h>
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#include <wire/peer_wire.h>
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#if EXPERIMENTAL_FEATURES
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void psbt_input_set_final_witness_stack(const tal_t *ctx,
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struct wally_psbt_input *in,
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const struct witness_element **elements)
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{
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tal_wally_start();
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wally_tx_witness_stack_init_alloc(tal_count(elements),
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&in->final_witness);
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for (size_t i = 0; i < tal_count(elements); i++)
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wally_tx_witness_stack_add(in->final_witness,
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elements[i]->witness,
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tal_bytelen(elements[i]->witness));
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tal_wally_end(ctx);
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}
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const struct witness_stack **
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psbt_to_witness_stacks(const tal_t *ctx,
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const struct wally_psbt *psbt,
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enum tx_role side_to_stack)
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{
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size_t stack_index;
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u16 serial_id;
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const struct witness_stack **stacks
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= tal_arr(ctx, const struct witness_stack *, psbt->num_inputs);
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stack_index = 0;
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for (size_t i = 0; i < psbt->num_inputs; i++) {
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if (!psbt_get_serial_id(&psbt->inputs[i].unknowns,
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&serial_id))
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/* FIXME: throw an error ? */
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return NULL;
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/* BOLT-78de9a79b491ae9fb84b1fdb4546bacf642dce87 #2:
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* - if is the `initiator`:
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* - MUST send even `serial_id`s
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*/
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if (serial_id % 2 == side_to_stack) {
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struct wally_tx_witness_stack *wtx_s =
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psbt->inputs[i].final_witness;
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struct witness_stack *stack =
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tal(stacks, struct witness_stack);
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/* Convert the wally_tx_witness_stack to
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* a witness_stack entry */
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stack->witness_element =
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tal_arr(stack, struct witness_element *,
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wtx_s->num_items);
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for (size_t j = 0; j < tal_count(stack->witness_element); j++) {
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stack->witness_element[j] = tal(stack,
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struct witness_element);
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stack->witness_element[j]->witness =
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tal_dup_arr(stack, u8,
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wtx_s->items[j].witness,
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wtx_s->items[j].witness_len,
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0);
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}
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stacks[stack_index++] = stack;
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}
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}
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if (stack_index == 0)
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return tal_free(stacks);
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tal_resize(&stacks, stack_index);
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return stacks;
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}
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#endif /* EXPERIMENTAL_FEATURES */
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