mirror of
https://github.com/ChristopherA/Learning-Bitcoin-from-the-Command-Line.git
synced 2025-10-31 02:17:24 +00:00
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "wally_core.h"
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#include "wally_transaction.h"
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#include "wally_script.h"
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int main(int argc, char *argv[]) {
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if (argc != 3) {
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printf("ERROR: Only %i arguments! Correct usage is '%s [transaction hex] [serialized locking script]'\n",argc-1,argv[0]);
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exit(-1);
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}
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char *utxo_hex = argv[1];
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char *script = argv[2];
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int lw_response;
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size_t written;
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/* 1. Create the P2SH Script */
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int script_length = strlen(script)/2;
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unsigned char bscript[script_length];
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lw_response = wally_hex_to_bytes(script,bscript,script_length,&written);
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assert(lw_response == WALLY_OK);
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unsigned char p2sh[WALLY_SCRIPTPUBKEY_P2SH_LEN];
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lw_response = wally_scriptpubkey_p2sh_from_bytes(bscript,sizeof(bscript),WALLY_SCRIPT_HASH160,p2sh,WALLY_SCRIPTPUBKEY_P2SH_LEN,&written);
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assert(lw_response == WALLY_OK);
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char *pubkey;
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lw_response = wally_hex_from_bytes(p2sh,sizeof(p2sh),&pubkey);
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/* 2. Create the Transaction */
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struct wally_tx *tx;
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lw_response = wally_tx_init_alloc(2,0,1,1,&tx);
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assert(lw_response == WALLY_OK);
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/* 3. Create the Outputs with the P2SH */
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struct wally_tx_output *tx_output;
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lw_response = wally_tx_output_init_alloc(95000,p2sh,sizeof(p2sh),&tx_output);
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assert(lw_response == WALLY_OK);
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lw_response = wally_tx_add_output(tx,tx_output);
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assert(lw_response == WALLY_OK);
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/* 4. Create the Inputs based on Hex */
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struct wally_tx *utxo;
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lw_response = wally_tx_from_hex(utxo_hex,0,&utxo);
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assert(lw_response == WALLY_OK);
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struct wally_tx_input *tx_input;
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lw_response = wally_tx_input_init_alloc(utxo->inputs[0].txhash,sizeof(utxo->inputs[0].txhash),utxo->inputs[0].index,0,utxo->inputs[0].script,utxo->inputs[0].script_len,utxo->inputs[0].witness,&tx_input);
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assert(lw_response == WALLY_OK);
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lw_response = wally_tx_add_input(tx,tx_input);
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assert(lw_response == WALLY_OK);
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/* 5. Print It */
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char *tx_hex;
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lw_response = wally_tx_to_hex(tx,0, &tx_hex);
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assert(lw_response == WALLY_OK);
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printf("%s\n",tx_hex);
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wally_free_string(tx_hex);
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wally_tx_free(tx);
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wally_tx_input_free(tx_input);
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wally_tx_output_free(tx_output);
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wally_tx_free(utxo);
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wally_cleanup(0);
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}
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