799 lines
25 KiB
Go
799 lines
25 KiB
Go
// Copyright (c) 2013-2014 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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"errors"
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"fmt"
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)
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// ErrIncorrectArgTypes describes an error where the wrong argument types
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// are present.
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var ErrIncorrectArgTypes = errors.New("incorrect arguement types")
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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 interface{} `json:"id,omitempty"`
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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 implemented 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 *interface{} `json:"id"`
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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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// Guarantee Error satisifies the builtin error interface
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var _, _ error = Error{}, &Error{}
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// Error returns a string describing the btcjson error. This
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// satisifies the builtin error interface.
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func (e Error) Error() string {
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return fmt.Sprintf("%d: %s", e.Code, e.Message)
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}
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// jsonWithArgs takes a command, an id, and an interface which contains an
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// array of the arguments for that command. It knows NOTHING about the commands
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// so all error checking of the arguments must happen before it is called.
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func jsonWithArgs(command string, id interface{}, args interface{}) ([]byte, error) {
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rawMessage := Message{"1.0", id, 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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//
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// WARNING: This method is deprecated and may be removed in a future version.
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// Do NOT use this as it does not work for all commands. Instead, use one of
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// the New<command>Cmd functions to create a specific command.
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func CreateMessage(message string, args ...interface{}) ([]byte, error) {
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finalMessage, err := CreateMessageWithId(message, "btcd", args...)
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return finalMessage, err
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}
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// CreateMessageWithId takes a string, an id, and the optional arguments for
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// it. Then, if it is a recognized bitcoin json message, generates the json
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// message ready to send off to the daemon or server. It is capable of handling
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// all of the commands from the standard client, described at:
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// https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list
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//
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// WARNING: This method is deprecated and may be removed in a future version.
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// Do NOT use this as it does not work for all commands. Instead, use one of
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// the New<command>Cmd functions to create a specific command.
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func CreateMessageWithId(message string, id interface{}, 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", "getbestblockhash", "getblockchaininfo",
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"getnetworkinfo":
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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, id, 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, id, args)
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// One required int
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case "getblockhash", "estimatefee", "estimatepriority":
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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, id, 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, id, args)
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// One optional string
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case "getmemorypool", "getnewaddress", "getwork", "help",
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"getrawchangeaddress":
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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, id, 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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"getaddressesbyaccount", "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, id, args)
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// Two required strings
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case "setaccount", "signmessage", "walletpassphrasechange", "addnode":
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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, id, args)
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// One required string, one required int
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case "walletpassphrase":
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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].(int)
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if !ok1 || !ok2 {
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err = fmt.Errorf("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, id, 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, id, 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, id, 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, id, 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, id, args)
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// One required string, one optional int
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case "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, id, args)
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// One required string, one optional string
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// Strictly, the optional arg for submit block is an object, but
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// bitcoind ignores it for now, so best to just allow string until
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// support for it is complete.
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case "submitblock":
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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].(string)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("arguments must be string 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, id, 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, id, 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, id, 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, id, 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, id, args)
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// Two optional strings
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case "listsinceblock":
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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].(string)
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}
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if !ok1 || !ok2 {
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err = fmt.Errorf("optional arguments must be strings for %s", message)
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return finalMessage, err
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}
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finalMessage, err = jsonWithArgs(message, id, 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, id, 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, id, 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, id, 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, id, args)
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|
// Must be a set of string, int, string, float (any number of those).
|
|
case "createrawtransaction":
|
|
if len(args)%4 != 0 || len(args) == 0 {
|
|
err = fmt.Errorf("wrong number of arguments for %s", message)
|
|
return finalMessage, err
|
|
}
|
|
type vlist struct {
|
|
Txid string `json:"txid"`
|
|
Vout uint32 `json:"vout"`
|
|
}
|
|
vList := make([]vlist, len(args)/4)
|
|
addresses := make(map[string]float64)
|
|
for i := 0; i < len(args)/4; i++ {
|
|
txid, ok1 := args[(i*4)+0].(string)
|
|
vout, ok2 := args[(i*4)+1].(uint32)
|
|
add, ok3 := args[(i*4)+2].(string)
|
|
amt, ok4 := args[(i*4)+3].(float64)
|
|
if !ok1 || !ok2 || !ok3 || !ok4 {
|
|
return finalMessage, ErrIncorrectArgTypes
|
|
}
|
|
vList[i].Txid = txid
|
|
vList[i].Vout = vout
|
|
addresses[add] = amt
|
|
}
|
|
finalMessage, err = jsonWithArgs(message, id, []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 {
|
|
return finalMessage, ErrIncorrectArgTypes
|
|
}
|
|
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 {
|
|
return finalMessage, ErrIncorrectArgTypes
|
|
}
|
|
// 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, id, []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 {
|
|
return finalMessage, ErrIncorrectArgTypes
|
|
}
|
|
finalMessage, err = jsonWithArgs(message, id, args)
|
|
// one required string (hex) and optional sets of one string, one int,
|
|
// and one string along with another optional string.
|
|
case "signrawtransaction":
|
|
if len(args) < 1 {
|
|
err = fmt.Errorf("wrong number of arguments for %s", message)
|
|
return finalMessage, err
|
|
}
|
|
_, ok1 := args[0].(string)
|
|
if !ok1 {
|
|
return finalMessage, ErrIncorrectArgTypes
|
|
}
|
|
type txlist struct {
|
|
Txid string `json:"txid"`
|
|
Vout uint32 `json:"vout"`
|
|
ScriptPubKey string `json:"scriptPubKey"`
|
|
}
|
|
txList := make([]txlist, 1)
|
|
|
|
if len(args) > 1 {
|
|
txid, ok2 := args[1].(string)
|
|
vout, ok3 := args[2].(uint32)
|
|
spkey, ok4 := args[3].(string)
|
|
if !ok1 || !ok2 || !ok3 || !ok4 {
|
|
return finalMessage, ErrIncorrectArgTypes
|
|
}
|
|
txList[0].Txid = txid
|
|
txList[0].Vout = vout
|
|
txList[0].ScriptPubKey = spkey
|
|
}
|
|
/*
|
|
pkeyList := make([]string, (len(args)-1)/4)
|
|
for i := 0; i < len(args)/4; i += 1 {
|
|
fmt.Println(args[(i*4)+4])
|
|
txid, ok1 := args[(i*4)+1].(string)
|
|
vout, ok2 := args[(i*4)+2].(int)
|
|
spkey, ok3 := args[(i*4)+3].(string)
|
|
pkey, ok4 := args[(i*4)+4].(string)
|
|
if !ok1 || !ok2 || !ok3 || !ok4 {
|
|
return finalMessage, ErrIncorrectArgTypes
|
|
}
|
|
txList[i].Txid = txid
|
|
txList[i].Vout = vout
|
|
txList[i].ScriptPubKey = spkey
|
|
pkeyList[i] = pkey
|
|
}
|
|
*/
|
|
finalMessage, err = jsonWithArgs(message, id, []interface{}{args[0].(string), txList})
|
|
// Any other message
|
|
default:
|
|
err = fmt.Errorf("not a valid command: %s", message)
|
|
}
|
|
return finalMessage, err
|
|
}
|
|
|
|
// JSONGetMethod takes a message and tries to find the bitcoin command that it
|
|
// is in reply to so it can be processed further.
|
|
func JSONGetMethod(message []byte) (string, error) {
|
|
// 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 method, 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 method, err
|
|
}
|
|
return method, err
|
|
}
|
|
|
|
// TlsRpcCommand takes a message generated from one of the routines above
|
|
// along with the login/server information and any relavent PEM encoded
|
|
// certificates chains. It sends the command via https and returns a go struct
|
|
// with the result.
|
|
func TlsRpcCommand(user string, password string, server string, message []byte,
|
|
certificates []byte, skipverify bool) (Reply, error) {
|
|
return rpcCommand(user, password, server, message, true, certificates,
|
|
skipverify)
|
|
}
|
|
|
|
// 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) {
|
|
return rpcCommand(user, password, server, message, false, nil, false)
|
|
}
|
|
|
|
func rpcCommand(user string, password string, server string, message []byte,
|
|
https bool, certificates []byte, skipverify bool) (Reply, error) {
|
|
var result Reply
|
|
method, err := JSONGetMethod(message)
|
|
if err != nil {
|
|
return result, err
|
|
}
|
|
body, err := rpcRawCommand(user, password, server, message, https,
|
|
certificates, skipverify)
|
|
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
|
|
}
|
|
|
|
// TlsRpcRawCommand takes a message generated from one of the routines above
|
|
// along with the login,server info and PEM encoded certificate chains for the
|
|
// server sends it, and gets a reply, returning
|
|
// the raw []byte response for use with ReadResultCmd.
|
|
func TlsRpcRawCommand(user string, password string, server string,
|
|
message []byte, certificates []byte, skipverify bool) ([]byte, error) {
|
|
return rpcRawCommand(user, password, server, message, true,
|
|
certificates, skipverify)
|
|
}
|
|
|
|
// RpcRawCommand takes a message generated from one of the routines above
|
|
// along with the login/server info, sends it, and gets a reply, returning
|
|
// the raw []byte response for use with ReadResultCmd.
|
|
func RpcRawCommand(user string, password string, server string, message []byte) ([]byte, error) {
|
|
return rpcRawCommand(user, password, server, message, false, nil, false)
|
|
}
|
|
|
|
// rpcRawCommand is a helper function for the above two functions.
|
|
func rpcRawCommand(user string, password string, server string,
|
|
message []byte, https bool, certificates []byte, skipverify bool) ([]byte, error) {
|
|
var result []byte
|
|
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
|
|
}
|
|
resp, err := jsonRpcSend(user, password, server, message, https,
|
|
certificates, skipverify)
|
|
if err != nil {
|
|
err := fmt.Errorf("error sending json message: " + err.Error())
|
|
return result, err
|
|
}
|
|
result, err = GetRaw(resp.Body)
|
|
if err != nil {
|
|
err := fmt.Errorf("error getting json reply: %v", err)
|
|
return result, err
|
|
}
|
|
return result, err
|
|
}
|
|
|
|
// RpcSend sends the passed command to the provided server using the provided
|
|
// authentication details, waits for a reply, and returns a Go struct with the
|
|
// result.
|
|
func RpcSend(user string, password string, server string, cmd Cmd) (Reply, error) {
|
|
msg, err := cmd.MarshalJSON()
|
|
if err != nil {
|
|
return Reply{}, err
|
|
}
|
|
|
|
return RpcCommand(user, password, server, msg)
|
|
}
|
|
|
|
// TlsRpcSend sends the passed command to the provided server using the provided
|
|
// authentication details and PEM encoded certificate chain, waits for a reply,
|
|
// and returns a Go struct with the result.
|
|
func TlsRpcSend(user string, password string, server string, cmd Cmd,
|
|
certificates []byte, skipVerify bool) (Reply, error) {
|
|
|
|
msg, err := cmd.MarshalJSON()
|
|
if err != nil {
|
|
return Reply{}, err
|
|
}
|
|
|
|
return TlsRpcCommand(user, password, server, msg, certificates,
|
|
skipVerify)
|
|
}
|
|
|
|
// IsValidIdType checks that the Id field (which can go in any of the json
|
|
// messages) is valid. json rpc 1.0 allows any (json) type, but we still need
|
|
// to prevent values that cannot be marshalled from going in. json rpc 2.0
|
|
// (which bitcoind follows for some parts) only allows string, number, or null,
|
|
// so we restrict to that list. Ths is only necessary if you manually marshal
|
|
// a message. The normal btcjson functions only use string ids.
|
|
func IsValidIdType(id interface{}) bool {
|
|
switch id.(type) {
|
|
case int, int8, int16, int32, int64,
|
|
uint, uint8, uint16, uint32, uint64,
|
|
float32, float64,
|
|
string,
|
|
nil:
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|
|
|
|
// JSONToAmount Safely converts a floating point value to an int.
|
|
// Clearly not all floating point numbers can be converted to ints (there
|
|
// is no one-to-one mapping), but bitcoin's json api returns most numbers as
|
|
// floats which are not safe to use when handling money. Since bitcoins can
|
|
// only be divided in a limited way, this methods works for the amounts returned
|
|
// by the json api. It is not for general use.
|
|
// This follows the method described at:
|
|
// https://en.bitcoin.it/wiki/Proper_Money_Handling_%28JSON-RPC%29
|
|
func JSONToAmount(jsonAmount float64) (int64, error) {
|
|
var amount int64
|
|
var err error
|
|
if jsonAmount > 1.797693134862315708145274237317043567981e+300 {
|
|
err := fmt.Errorf("error %v is too large to convert", jsonAmount)
|
|
return amount, err
|
|
}
|
|
if jsonAmount < -1.797693134862315708145274237317043567981e+300 {
|
|
err := fmt.Errorf("error %v is too small to convert", jsonAmount)
|
|
return amount, err
|
|
}
|
|
tempVal := 1e8 * jsonAmount
|
|
// So we round properly. float won't == 0 and if it did, that
|
|
// would be converted fine anyway.
|
|
if tempVal < 0 {
|
|
tempVal = tempVal - 0.5
|
|
}
|
|
if tempVal > 0 {
|
|
tempVal = tempVal + 0.5
|
|
}
|
|
// Then just rely on the integer truncating
|
|
amount = int64(tempVal)
|
|
return amount, err
|
|
}
|