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get_tx_from_db.py
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get_tx_from_db.py
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#!/usr/bin/env python2.7
"""
this script is very similar to ./get_tx.py. the purpose of this apparent
duplication is that this script does not require bitcoin-cli to function - it
just requires a database populated with the bitcoin blockchain as per schema.sql
"""
import sys
import btc_grunt
import get_tx
import queries
def validate_script_usage():
if len(sys.argv) < 2:
raise ValueError(
"\n\nUsage: ./get_tx_from_db.py <the tx hash in hex | "
"blockheight-txnum>\n"
"eg: ./get_tx_from_db.py 514c46f0b61714092f15c8dfcb576c9f79b3f95998"
"9b98de3944b19d98832b58\n"
"or ./get_tx_from_db.py 257727-130\n\n"
)
def process_tx_header_from_db(tx_db_data, human_readable = True):
tx_dict = {
"block_height": tx_db_data["block_height"],
"change": tx_db_data["tx_change"],
"funds_balance_validation_status": \
btc_grunt.bin2bool(tx_db_data["tx_funds_balance_validation_status"]),
"lock_time": tx_db_data["tx_lock_time"],
"lock_time_validation_status": \
btc_grunt.bin2bool(tx_db_data["tx_lock_time_validation_status"]),
"num_inputs": tx_db_data["num_txins"],
"num_outputs": tx_db_data["num_txouts"],
"size": tx_db_data["tx_size"],
"version": tx_db_data["tx_version"],
"tx_num": tx_db_data["tx_num"],
"input": {},
"output": {}
}
if human_readable:
tx_dict["hash"] = tx_db_data["tx_hash_hex"]
tx_dict["block_hash"] = tx_db_data["block_hash_hex"]
else:
tx_dict["hash"] = btc_grunt.hex2bin(tx_db_data["tx_hash_hex"])
tx_dict["block_hash"] = btc_grunt.hex2bin(tx_db_data["block_hash_hex"])
if human_readable:
tx_dict = btc_grunt.human_readable_tx(tx_dict, 0, 0, 0, 0, None)
return tx_dict
def process_tx_body_from_db(tx_dict, human_readable = True):
if (btc_grunt.valid_hex_hash(tx_dict["hash"])):
tx_hash_hex = tx_dict["hash"]
else:
tx_hash_hex = btc_grunt.bin2hex(tx_dict["hash"])
txin_txout_data = queries.get_txins_and_txouts(tx_hash_hex)
count_txins = 0
count_txouts = 0
for (i, row) in enumerate(txin_txout_data):
if (row["type"] == "txin"):
count_txins += 1
prev_txout = {}
if tx_dict["tx_num"] > 0:
prev_txout_script = btc_grunt.hex2bin(
row["prev_txout_script_hex"]
)
prev_txout0 = {
"script": prev_txout_script,
"script_format": row["prev_txout_script_format"],
"script_length": len(prev_txout_script),
"standard_script_pubkey": row["prev_txout_pubkey"],
"standard_script_address": row["prev_txout_address"],
"standard_script_alternate_address": \
row["prev_txout_alternate_address"]
}
prev_txout0["script_list"] = btc_grunt.script_bin2list(
prev_txout_script
)
if human_readable:
prev_txout0["parsed_script"] = \
btc_grunt.script_list2human_str(prev_txout0["script_list"])
prev_txout["output"] = { row["prev_txout_num"]: prev_txout0 }
txin_script = btc_grunt.hex2bin(row["txin_script_hex"])
txin = {
"checksig_validation_status": \
btc_grunt.bin2bool(row["txin_checksig_validation_status"]),
"funds": row["txin_funds"],
"hash": btc_grunt.hex2bin(row["prev_txout_hash_hex"]),
"hash_validation_status": btc_grunt.bin2bool(
row["txin_hash_validation_status"]
),
"index": row["prev_txout_num"],
"index_validation_status": btc_grunt.bin2bool(
row["txin_index_validation_status"]
),
"mature_coinbase_spend_validation_status": \
btc_grunt.bin2bool(
row["txin_mature_coinbase_spend_validation_status"]
),
"script": txin_script,
"script_format": row["txin_script_format"],
"script_length": len(txin_script),
"sequence_num": row["txin_sequence_num"],
"single_spend_validation_status": \
btc_grunt.bin2bool(row["txin_single_spend_validation_status"]),
"spend_from_non_orphan_validation_status": \
btc_grunt.bin2bool(
row["txin_spend_from_non_orphan_validation_status"]
)
}
if tx_dict["tx_num"] > 0:
txin["prev_txs"] = { 0: prev_txout }
txin["script_list"] = btc_grunt.script_bin2list(txin_script)
if human_readable:
txin["parsed_script"] = \
btc_grunt.script_list2human_str(txin["script_list"])
tx_dict["input"][row["txin_num"]] = txin
if (row["type"] == "txout"):
count_txouts += 1
txout_script = btc_grunt.hex2bin(row["txout_script_hex"])
txout = {
"funds": row["txout_funds"],
"script": txout_script,
"script_format": row["txout_script_format"],
"script_length": len(txout_script),
"standard_script_address": row["txout_address"],
"standard_script_alternate_address": \
row["txout_alternate_address"],
"standard_script_address_checksum_validation_status": \
btc_grunt.bin2bool(
row["standard_script_address_checksum_validation_status"]
)
}
if row["txout_pubkey_hex"] is None:
txout["standard_script_pubkey"] = None
else:
txout["standard_script_pubkey"] = \
btc_grunt.hex2bin(row["txout_pubkey_hex"])
txout["script_list"] = btc_grunt.script_bin2list(txout_script)
if human_readable:
txout["parsed_script"] = \
btc_grunt.script_list2human_str(txout["script_list"])
tx_dict["output"][row["txout_num"]] = txout
tx_dict["txins_exist_validation_status"] = \
(count_txins == tx_dict["num_inputs"])
tx_dict["txouts_exist_validation_status"] = \
(count_txouts == tx_dict["num_outputs"])
if human_readable:
tx_dict = btc_grunt.human_readable_tx(tx_dict, 0, 0, 0, 0, None)
return tx_dict
if __name__ == '__main__':
validate_script_usage()
(input_arg_format, data) = get_tx.get_stdin_params()
tx_db_data = queries.get_tx_header(input_arg_format, data)
tx_dict = process_tx_header_from_db(tx_db_data, human_readable = False)
tx_dict = process_tx_body_from_db(tx_dict, human_readable = True)
block_height = tx_dict["block_height"]
del tx_dict["block_height"]
block_hash = btc_grunt.bin2hex(tx_dict["block_hash"])
del tx_dict["block_hash"]
tx_num = tx_dict["tx_num"]
del tx_dict["tx_num"]
print "\nblock height: %d\n" \
"block hash: %s\n" \
"tx num: %d\n" \
"tx: %s" \
% (block_height, block_hash, tx_num, btc_grunt.pretty_json(tx_dict))