726 lines
22 KiB
Go
726 lines
22 KiB
Go
// Copyright (c) 2013 Conformal Systems LLC.
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package btcjson
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import (
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"encoding/json"
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"fmt"
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)
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// Message contains a message to be sent to the bitcoin client.
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type Message struct {
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Jsonrpc string `json:"jsonrpc"`
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Id string `json:"id"`
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Method string `json:"method"`
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Params interface{} `json:"params"`
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}
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// Reply is the general form of the reply from the bitcoin client.
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// The form of the Result part varies from one command to the next so it
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// is currently implimented as an interface.
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type Reply struct {
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Result interface{} `json:"result"`
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Error *Error `json:"error"`
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// This has to be a pointer for go to put a null in it when empty.
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Id *string `json:"id"`
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}
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// InfoResult contains the data returned by the getinfo command.
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type InfoResult struct {
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Version int `json:"version,omitempty"`
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ProtocolVersion int `json:"protocolversion,omitempty"`
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WalletVersion int `json:"walletversion,omitempty"`
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Balance float64 `json:"balance,omitempty"`
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Blocks int `json:"blocks,omitempty"`
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Connections int `json:"connections,omitempty"`
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Proxy string `json:"proxy,omitempty"`
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Difficulty float64 `json:"difficulty,omitempty"`
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TestNet bool `json:"testnet,omitempty"`
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KeypoolOldest int64 `json:"keypoololdest,omitempty"`
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KeypoolSize int `json:"keypoolsize,omitempty"`
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PaytxFee float64 `json:"paytxfee,omitempty"`
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Errors string `json:"errors,omitempty"`
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}
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// BlockResult models the data from the getblock command.
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type BlockResult struct {
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Hash string `json:"hash"`
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Confirmations uint64 `json:"confirmations"`
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Size int `json:"size"`
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Height int64 `json:"height"`
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Version uint32 `json:"version"`
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MerkleRoot string `json:"merkleroot"`
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Tx []string `json:"tx"`
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Time int64 `json:"time"`
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Nonce uint32 `json:"nonce"`
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Bits string `json:"bits"`
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Difficulty float64 `json:"difficulty"`
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PreviousHash string `json:"previousblockhash"`
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NextHash string `json:"nextblockhash"`
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}
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// TxRawResult models the data from the getrawtransaction command.
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type TxRawResult struct {
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Hex string `json:"hex"`
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Txid string `json:"txid"`
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Version uint32 `json:"version"`
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LockTime uint32 `json:"locktime"`
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Vin []Vin `json:"vin"`
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Vout []Vout `json:"vout"`
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BlockHash string `json:"blockhash"`
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Confirmations uint64 `json:"confirmations"`
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Time int64 `json:"time"`
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Blocktime int64 `json:"blocktime"`
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}
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// TxRawDecodeResult models the data from the decoderawtransaction command.
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type TxRawDecodeResult struct {
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Txid string `json:"txid"`
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Version uint32 `json:"version"`
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Locktime int `json:"locktime"`
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Vin []Vin `json:"vin"`
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Vout []Vout `json:"vout"`
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}
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// Vin models parts of the tx data. It is defined seperately since both
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// getrawtransaction and decoderawtransaction use the same structure.
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type Vin struct {
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Coinbase string `json:"coinbase,omitempty"`
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Vout int `json:"vout,omitempty"`
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ScriptSig struct {
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Txid string `json:"txid"`
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Asm string `json:"asm"`
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Hex string `json:"hex"`
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} `json:"scriptSig,omitempty"`
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Sequence float64 `json:"sequence"`
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}
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// Vout models parts of the tx data. It is defined seperately since both
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// getrawtransaction and decoderawtransaction use the same structure.
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type Vout struct {
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Value float64 `json:"value"`
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N int `json:"n"`
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ScriptPubKey struct {
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Asm string `json:"asm"`
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Hex string `json:"hex"`
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ReqSig int `json:"reqSig"`
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Type string `json:"type"`
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Addresses []string `json:"addresses"`
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} `json:"scriptPubKey"`
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}
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// Error models the error field of the json returned by a bitcoin client. When
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// there is no error, this should be a nil pointer to produce the null in the
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// json that bitcoind produces.
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type Error struct {
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Code int `json:"code,omitempty"`
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Message string `json:"message,omitempty"`
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}
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// jsonWithArgs takes a command and an interface which contains an array
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// of the arguments for that command. It knows NOTHING about the commands so
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// all error checking of the arguments must happen before it is called.
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func jsonWithArgs(command string, args interface{}) ([]byte, error) {
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rawMessage := Message{"1.0", "btcd", command, args}
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finalMessage, err := json.Marshal(rawMessage)
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if err != nil {
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return nil, err
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}
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return finalMessage, nil
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}
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// CreateMessage takes a string and the optional arguments for it. Then,
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// if it is a recognized bitcoin json message, generates the json message ready
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// to send off to the daemon or server.
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// It is capable of handeling all of the commands from the standard client,
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// described at:
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// https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list
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func CreateMessage(message string, args ...interface{}) ([]byte, error) {
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var finalMessage []byte
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var err error
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// Different commands have different required and optional arguments.
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// Need to handle them based on that.
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switch message {
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// No args
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case "getblockcount", "getblocknumber", "getconnectioncount",
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"getdifficulty", "getgenerate", "gethashespersec", "getinfo",
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"getmininginfo", "getpeerinfo", "getrawmempool",
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"keypoolrefill", "listaddressgroupings", "listlockunspent",
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"stop", "walletlock":
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if len(args) > 0 {
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err = fmt.Errorf("Too many arguments for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One optional int
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case "listaccounts":
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if len(args) > 1 {
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err = fmt.Errorf("Too many arguments for %s", message)
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return finalMessage, err
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}
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if len(args) == 1 {
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_, ok := args[0].(int)
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if !ok {
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err = fmt.Errorf("Argument must be int for %s", message)
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return finalMessage, err
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}
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required int
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case "getblockhash":
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if len(args) != 1 {
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err = fmt.Errorf("Missing argument for %s", message)
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return finalMessage, err
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}
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_, ok := args[0].(int)
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if !ok {
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err = fmt.Errorf("Argument must be int for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required float
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case "settxfee":
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if len(args) != 1 {
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err = fmt.Errorf("Missing argument for %s", message)
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return finalMessage, err
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}
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_, ok := args[0].(float64)
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if !ok {
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err = fmt.Errorf("Argument must be float64 for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One optional string
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case "getmemorypool", "getnewaddress", "getwork", "help":
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if len(args) > 1 {
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err = fmt.Errorf("Too many arguments for %s", message)
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return finalMessage, err
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}
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if len(args) == 1 {
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_, ok := args[0].(string)
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if !ok {
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err = fmt.Errorf("Optional argument must be string for %s", message)
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return finalMessage, err
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}
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required string
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case "backupwallet", "decoderawtransaction", "dumpprivkey",
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"encryptwallet", "getaccount", "getaccountaddress",
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"getaddressbyaccount", "getblock",
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"gettransaction", "sendrawtransaction", "validateaddress":
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if len(args) != 1 {
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err = fmt.Errorf("%s requires one argument", message)
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return finalMessage, err
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}
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_, ok := args[0].(string)
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if !ok {
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err = fmt.Errorf("Argument must be string for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// Two required strings
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case "listsinceblock", "setaccount", "signmessage", "walletpassphrase",
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"walletpassphrasechange":
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if len(args) != 2 {
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err = fmt.Errorf("Missing arguments for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(string)
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_, ok2 := args[1].(string)
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if !ok1 || !ok2 {
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err = fmt.Errorf("Arguments must be string for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// Three required strings
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case "verifymessage":
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if len(args) != 3 {
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err = fmt.Errorf("Three arguments required for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(string)
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_, ok2 := args[1].(string)
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_, ok3 := args[2].(string)
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if !ok1 || !ok2 || !ok3 {
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err = fmt.Errorf("Arguments must be string for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required bool, one optional string
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case "getaddednodeinfo":
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if len(args) > 2 || len(args) == 0 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(bool)
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ok2 := true
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if len(args) == 2 {
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_, ok2 = args[1].(string)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("Arguments must be bool and optionally string for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required bool, one optional int
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case "setgenerate":
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if len(args) > 2 || len(args) == 0 {
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err = fmt.Errorf("Wrong number of argument for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(bool)
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ok2 := true
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if len(args) == 2 {
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_, ok2 = args[1].(int)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("Arguments must be bool and optionally int for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One optional string, one optional int
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case "getbalance", "getreceivedbyaccount":
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if len(args) > 2 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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ok1 := true
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ok2 := true
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if len(args) >= 1 {
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_, ok1 = args[0].(string)
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}
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if len(args) == 2 {
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_, ok2 = args[1].(int)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("Optional arguments must be string and int for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required string, one optional int
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case "addnode", "getrawtransaction", "getreceivedbyaddress":
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if len(args) > 2 || len(args) == 0 {
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err = fmt.Errorf("Wrong number of argument for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(string)
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ok2 := true
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if len(args) == 2 {
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_, ok2 = args[1].(int)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("Arguments must be string and optionally int for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One optional int, one optional bool
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case "listreceivedbyaccount", "listreceivedbyaddress":
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if len(args) > 2 {
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err = fmt.Errorf("Wrong number of argument for %s", message)
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return finalMessage, err
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}
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ok1 := true
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ok2 := true
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if len(args) >= 1 {
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_, ok1 = args[0].(int)
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}
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if len(args) == 2 {
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_, ok2 = args[1].(bool)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("Optional arguments must be int and bool for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One optional string, two optional ints
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case "listtransactions":
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if len(args) > 3 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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ok1 := true
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ok2 := true
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ok3 := true
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if len(args) >= 1 {
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_, ok1 = args[0].(string)
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}
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if len(args) > 1 {
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_, ok2 = args[1].(int)
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}
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if len(args) == 3 {
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_, ok3 = args[2].(int)
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}
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if !ok1 || !ok2 || !ok3 {
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err = fmt.Errorf("Optional arguments must be string and up to two ints for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required string, one optional string, one optional bool
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case "importprivkey":
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if len(args) > 3 || len(args) == 0 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(string)
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ok2 := true
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ok3 := true
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if len(args) > 1 {
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_, ok2 = args[1].(string)
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}
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if len(args) == 3 {
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_, ok3 = args[2].(bool)
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}
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if !ok1 || !ok2 || !ok3 {
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err = fmt.Errorf("Arguments must be string and optionally string and bool for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// Two optional ints
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case "listunspent":
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if len(args) > 2 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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ok1 := true
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ok2 := true
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if len(args) >= 1 {
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_, ok1 = args[0].(int)
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}
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if len(args) == 2 {
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_, ok2 = args[1].(int)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("Optional arguments must be ints for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// Two required strings, one required float, one optional int,
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// two optional strings.
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case "sendfrom":
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if len(args) > 6 || len(args) < 3 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(string)
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_, ok2 := args[1].(string)
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_, ok3 := args[2].(float64)
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ok4 := true
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ok5 := true
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ok6 := true
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if len(args) >= 4 {
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_, ok4 = args[3].(int)
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}
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if len(args) >= 5 {
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_, ok5 = args[4].(string)
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}
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if len(args) == 6 {
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_, ok6 = args[5].(string)
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}
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if !ok1 || !ok2 || !ok3 || !ok4 || !ok5 || !ok6 {
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err = fmt.Errorf("Arguments must be string, string, float64 and optionally int and two strings for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// Two required strings, one required float, one optional int,
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// one optional string.
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case "move":
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if len(args) > 5 || len(args) < 3 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(string)
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_, ok2 := args[1].(string)
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_, ok3 := args[2].(float64)
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ok4 := true
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ok5 := true
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if len(args) >= 4 {
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_, ok4 = args[3].(int)
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}
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if len(args) == 5 {
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_, ok5 = args[4].(string)
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}
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if !ok1 || !ok2 || !ok3 || !ok4 || !ok5 {
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err = fmt.Errorf("Arguments must be string, string, float64 and optionally int and string for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// One required strings, one required float, two optional strings
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case "sendtoaddress":
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if len(args) > 4 || len(args) < 2 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(string)
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_, ok2 := args[1].(float64)
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ok3 := true
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ok4 := true
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if len(args) >= 3 {
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_, ok3 = args[2].(string)
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}
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if len(args) == 4 {
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_, ok4 = args[3].(string)
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}
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if !ok1 || !ok2 || !ok3 || !ok4 {
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err = fmt.Errorf("Arguments must be string, float64 and optionally two strings for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// required int, required pair of keys (string), optional string
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case "addmultisignaddress":
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if len(args) > 4 || len(args) < 3 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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_, ok1 := args[0].(int)
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_, ok2 := args[1].(string)
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_, ok3 := args[2].(string)
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ok4 := true
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if len(args) == 4 {
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_, ok4 = args[2].(string)
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}
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if !ok1 || !ok2 || !ok3 || !ok4 {
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err = fmt.Errorf("Arguments must be int, two string and optionally one for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, args)
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// Must be a set of 3 strings and a float (any number of those)
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case "createrawtransaction":
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if len(args)%4 != 0 || len(args) == 0 {
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err = fmt.Errorf("Wrong number of arguments for %s", message)
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return finalMessage, err
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}
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type vlist struct {
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Vin string `json:"vin"`
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Vout string `json:"vout"`
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}
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vList := make([]vlist, len(args)/4)
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addresses := make(map[string]float64)
|
|
for i := 0; i < len(args)/4; i += 1 {
|
|
vin, ok1 := args[(i*4)+0].(string)
|
|
vout, ok2 := args[(i*4)+1].(string)
|
|
add, ok3 := args[(i*4)+2].(string)
|
|
amt, ok4 := args[(i*4)+3].(float64)
|
|
if !ok1 || !ok2 || !ok3 || !ok4 {
|
|
err = fmt.Errorf("Incorrect arguement types.")
|
|
return finalMessage, err
|
|
}
|
|
vList[i].Vin = vin
|
|
vList[i].Vout = vout
|
|
addresses[add] = amt
|
|
}
|
|
finalMessage, err = jsonWithArgs(message, []interface{}{vList, addresses})
|
|
// string, string/float pairs, optional int, and string
|
|
case "sendmany":
|
|
if len(args) < 3 {
|
|
err = fmt.Errorf("Wrong number of arguments for %s", message)
|
|
return finalMessage, err
|
|
}
|
|
var minconf int
|
|
var comment string
|
|
_, ok1 := args[0].(string)
|
|
if !ok1 {
|
|
err = fmt.Errorf("Incorrect arguement types.")
|
|
return finalMessage, err
|
|
}
|
|
addresses := make(map[string]float64)
|
|
for i := 1; i < len(args); i += 2 {
|
|
add, ok1 := args[i].(string)
|
|
if ok1 {
|
|
if len(args) > i+1 {
|
|
amt, ok2 := args[i+1].(float64)
|
|
if !ok2 {
|
|
err = fmt.Errorf("Incorrect arguement types.")
|
|
return finalMessage, err
|
|
}
|
|
// Put a single pair into addresses
|
|
addresses[add] = amt
|
|
} else {
|
|
comment = add
|
|
}
|
|
} else {
|
|
if _, ok := args[i].(int); ok {
|
|
minconf = args[i].(int)
|
|
}
|
|
if len(args)-1 > i {
|
|
if _, ok := args[i+1].(string); ok {
|
|
comment = args[i+1].(string)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
finalMessage, err = jsonWithArgs(message, []interface{}{args[0].(string), addresses, minconf, comment})
|
|
// bool and an array of stuff
|
|
case "lockunspent":
|
|
if len(args) < 2 {
|
|
err = fmt.Errorf("Wrong number of arguments for %s", message)
|
|
return finalMessage, err
|
|
}
|
|
_, ok1 := args[0].(bool)
|
|
if !ok1 {
|
|
err = fmt.Errorf("Incorrect arguement types.")
|
|
return finalMessage, err
|
|
}
|
|
finalMessage, err = jsonWithArgs(message, args)
|
|
// one required string (hex) and at least one set of 4 other strings.
|
|
case "signrawtransaction":
|
|
if (len(args)-1)%4 != 0 || len(args) < 5 {
|
|
err = fmt.Errorf("Wrong number of arguments for %s", message)
|
|
return finalMessage, err
|
|
}
|
|
_, ok1 := args[0].(string)
|
|
if !ok1 {
|
|
err = fmt.Errorf("Incorrect arguement types.")
|
|
return finalMessage, err
|
|
}
|
|
type txlist struct {
|
|
Txid string `json:"txid"`
|
|
Vout string `json:"vout"`
|
|
ScriptPubKey string `json:"scriptPubKey"`
|
|
}
|
|
txList := make([]txlist, (len(args)-1)/4)
|
|
pkeyList := make([]string, (len(args)-1)/4)
|
|
for i := 0; i < len(args)/4; i += 1 {
|
|
txid, ok1 := args[(i*4)+0].(string)
|
|
vout, ok2 := args[(i*4)+1].(string)
|
|
spkey, ok3 := args[(i*4)+2].(string)
|
|
pkey, ok4 := args[(i*4)+3].(string)
|
|
if !ok1 || !ok2 || !ok3 || !ok4 {
|
|
err = fmt.Errorf("Incorrect arguement types.")
|
|
return finalMessage, err
|
|
}
|
|
txList[i].Txid = txid
|
|
txList[i].Vout = vout
|
|
txList[i].ScriptPubKey = spkey
|
|
pkeyList[i] = pkey
|
|
}
|
|
finalMessage, err = jsonWithArgs(message, []interface{}{args[0].(string), txList, pkeyList})
|
|
// Any other message
|
|
default:
|
|
err = fmt.Errorf("Not a valid command: %s", message)
|
|
}
|
|
return finalMessage, err
|
|
}
|
|
|
|
// readResultCmd unmarshalls the json reply with data struct for specific
|
|
// commands or an interface if it is not a command where we already have a
|
|
// struct ready.
|
|
func readResultCmd(cmd string, message []byte) (Reply, error) {
|
|
var result Reply
|
|
var err error
|
|
var objmap map[string]json.RawMessage
|
|
err = json.Unmarshal(message, &objmap)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
// Take care of the parts that are the same for all replies.
|
|
var jsonErr Error
|
|
var id string
|
|
err = json.Unmarshal(objmap["error"], &jsonErr)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
err = json.Unmarshal(objmap["id"], &id)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
|
|
// If it is a command where we have already worked out the reply,
|
|
// generate put the results in the proper structure.
|
|
switch cmd {
|
|
case "getinfo":
|
|
var res InfoResult
|
|
err = json.Unmarshal(objmap["result"], &res)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
result.Result = res
|
|
case "getblock":
|
|
var res BlockResult
|
|
err = json.Unmarshal(objmap["result"], &res)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
result.Result = res
|
|
case "getrawtransaction":
|
|
var res TxRawResult
|
|
err = json.Unmarshal(objmap["result"], &res)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
result.Result = res
|
|
case "decoderawtransaction":
|
|
var res TxRawDecodeResult
|
|
err = json.Unmarshal(objmap["result"], &res)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
result.Result = res
|
|
// For anything else put it in an interface. All the data is still
|
|
// there, just a little less convenient to deal with.
|
|
default:
|
|
err = json.Unmarshal(message, &result)
|
|
if err != nil {
|
|
err = fmt.Errorf("Error unmarshalling json reply: %v", err)
|
|
return result, err
|
|
}
|
|
}
|
|
// Only want the error field when there is an actual error to report.
|
|
if jsonErr.Code != 0 {
|
|
result.Error = &jsonErr
|
|
}
|
|
result.Id = &id
|
|
return result, err
|
|
}
|
|
|
|
// RpcCommand takes a message generated from one of the routines above
|
|
// along with the login/server info, sends it, and gets a reply, returning
|
|
// a go struct with the result.
|
|
func RpcCommand(user string, password string, server string, message []byte) (Reply, error) {
|
|
var result Reply
|
|
// Need this so we can tell what kind of message we are sending
|
|
// so we can unmarshal it properly.
|
|
var method string
|
|
var msg interface{}
|
|
err := json.Unmarshal(message, &msg)
|
|
if err != nil {
|
|
err := fmt.Errorf("Error, message does not appear to be valid json: %v", err)
|
|
return result, err
|
|
}
|
|
m := msg.(map[string]interface{})
|
|
for k, v := range m {
|
|
if k == "method" {
|
|
method = v.(string)
|
|
}
|
|
}
|
|
if method == "" {
|
|
err := fmt.Errorf("Error, no method specified.")
|
|
return result, err
|
|
}
|
|
resp, err := jsonRpcSend(user, password, server, message)
|
|
if err != nil {
|
|
err := fmt.Errorf("Error Sending json message.")
|
|
return result, err
|
|
}
|
|
body, err := GetRaw(resp.Body)
|
|
if err != nil {
|
|
err := fmt.Errorf("Error getting json reply: %v", err)
|
|
return result, err
|
|
}
|
|
result, err = readResultCmd(method, body)
|
|
if err != nil {
|
|
err := fmt.Errorf("Error reading json message: %v", err)
|
|
return result, err
|
|
}
|
|
return result, err
|
|
}
|