451 lines
12 KiB
Go
451 lines
12 KiB
Go
package server
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"path/filepath"
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"sort"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"github.com/spf13/pflag"
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"github.com/spf13/viper"
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crypto "github.com/tendermint/go-crypto"
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"github.com/tendermint/go-crypto/keys"
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"github.com/tendermint/go-crypto/keys/words"
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cfg "github.com/tendermint/tendermint/config"
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"github.com/tendermint/tendermint/p2p"
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tmtypes "github.com/tendermint/tendermint/types"
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pvm "github.com/tendermint/tendermint/privval"
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tmcli "github.com/tendermint/tmlibs/cli"
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cmn "github.com/tendermint/tmlibs/common"
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dbm "github.com/tendermint/tmlibs/db"
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clkeys "github.com/cosmos/cosmos-sdk/client/keys"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/wire"
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)
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// genesis piece structure for creating combined genesis
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type GenesisTx struct {
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NodeID string `json:"node_id"`
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IP string `json:"ip"`
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Validator tmtypes.GenesisValidator `json:"validator"`
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AppGenTx json.RawMessage `json:"app_gen_tx"`
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}
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var (
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flagOverwrite = "overwrite"
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flagGenTxs = "gen-txs"
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flagIP = "ip"
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flagChainID = "chain-id"
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)
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// get cmd to initialize all files for tendermint and application
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func GenTxCmd(ctx *Context, cdc *wire.Codec, appInit AppInit) *cobra.Command {
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cmd := &cobra.Command{
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Use: "gen-tx",
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Short: "Create genesis transaction file (under [--home]/config/gentx/gentx-[nodeID].json)",
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Args: cobra.NoArgs,
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RunE: func(_ *cobra.Command, args []string) error {
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config := ctx.Config
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nodeKey, err := p2p.LoadOrGenNodeKey(config.NodeKeyFile())
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if err != nil {
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return err
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}
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nodeID := string(nodeKey.ID())
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pubKey := readOrCreatePrivValidator(config)
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appGenTx, cliPrint, validator, err := appInit.AppGenTx(cdc, pubKey)
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if err != nil {
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return err
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}
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ip := viper.GetString(flagIP)
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if len(ip) == 0 {
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ip, err = externalIP()
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if err != nil {
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return err
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}
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}
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tx := GenesisTx{
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NodeID: nodeID,
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IP: ip,
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Validator: validator,
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AppGenTx: appGenTx,
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}
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bz, err := wire.MarshalJSONIndent(cdc, tx)
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if err != nil {
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return err
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}
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genTxFile := json.RawMessage(bz)
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name := fmt.Sprintf("gentx-%v.json", nodeID)
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writePath := filepath.Join(viper.GetString(tmcli.HomeFlag), "config", "gentx")
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file := filepath.Join(writePath, name)
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err = cmn.EnsureDir(writePath, 0700)
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if err != nil {
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return err
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}
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err = cmn.WriteFile(file, bz, 0644)
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if err != nil {
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return err
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}
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// print out some key information
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toPrint := struct {
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AppMessage json.RawMessage `json:"app_message"`
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GenTxFile json.RawMessage `json:"gen_tx_file"`
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}{
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cliPrint,
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genTxFile,
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}
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out, err := wire.MarshalJSONIndent(cdc, toPrint)
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if err != nil {
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return err
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}
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fmt.Println(string(out))
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return nil
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},
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}
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cmd.Flags().String(flagIP, "", "external facing IP to use if left blank IP will be retrieved from this machine")
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cmd.Flags().AddFlagSet(appInit.FlagsAppGenTx)
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return cmd
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}
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// get cmd to initialize all files for tendermint and application
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func InitCmd(ctx *Context, cdc *wire.Codec, appInit AppInit) *cobra.Command {
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cmd := &cobra.Command{
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Use: "init",
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Short: "Initialize genesis config, priv-validator file, and p2p-node file",
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Args: cobra.NoArgs,
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RunE: func(_ *cobra.Command, _ []string) error {
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config := ctx.Config
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nodeKey, err := p2p.LoadOrGenNodeKey(config.NodeKeyFile())
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if err != nil {
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return err
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}
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nodeID := string(nodeKey.ID())
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pubKey := readOrCreatePrivValidator(config)
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chainID := viper.GetString(flagChainID)
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if chainID == "" {
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chainID = cmn.Fmt("test-chain-%v", cmn.RandStr(6))
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}
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genFile := config.GenesisFile()
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if !viper.GetBool(flagOverwrite) && cmn.FileExists(genFile) {
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return fmt.Errorf("genesis.json file already exists: %v", genFile)
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}
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// process genesis transactions, or otherwise create one for defaults
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var appMessage json.RawMessage
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var appGenTxs []json.RawMessage
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var validators []tmtypes.GenesisValidator
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var persistentPeers string
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if viper.GetBool(flagGenTxs) {
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genTxsDir := filepath.Join(viper.GetString(tmcli.HomeFlag), "config", "gentx")
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validators, appGenTxs, persistentPeers, err = processGenTxs(genTxsDir, cdc, appInit)
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if err != nil {
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return err
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}
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config.P2P.PersistentPeers = persistentPeers
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configFilePath := filepath.Join(viper.GetString(tmcli.HomeFlag), "config", "config.toml")
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cfg.WriteConfigFile(configFilePath, config)
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} else {
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appGenTx, am, validator, err := appInit.AppGenTx(cdc, pubKey)
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appMessage = am
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if err != nil {
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return err
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}
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validators = []tmtypes.GenesisValidator{validator}
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appGenTxs = []json.RawMessage{appGenTx}
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}
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appState, err := appInit.AppGenState(cdc, appGenTxs)
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if err != nil {
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return err
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}
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err = writeGenesisFile(cdc, genFile, chainID, validators, appState)
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if err != nil {
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return err
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}
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// print out some key information
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toPrint := struct {
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ChainID string `json:"chain_id"`
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NodeID string `json:"node_id"`
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AppMessage json.RawMessage `json:"app_message"`
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}{
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chainID,
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nodeID,
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appMessage,
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}
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out, err := wire.MarshalJSONIndent(cdc, toPrint)
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if err != nil {
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return err
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}
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fmt.Println(string(out))
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return nil
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},
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}
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cmd.Flags().BoolP(flagOverwrite, "o", false, "overwrite the genesis.json file")
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cmd.Flags().String(flagChainID, "", "genesis file chain-id, if left blank will be randomly created")
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cmd.Flags().Bool(flagGenTxs, false, "apply genesis transactions from [--home]/config/gentx/")
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cmd.Flags().AddFlagSet(appInit.FlagsAppGenState)
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cmd.Flags().AddFlagSet(appInit.FlagsAppGenTx) // need to add this flagset for when no GenTx's provided
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cmd.AddCommand(GenTxCmd(ctx, cdc, appInit))
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return cmd
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}
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// append a genesis-piece
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func processGenTxs(genTxsDir string, cdc *wire.Codec, appInit AppInit) (
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validators []tmtypes.GenesisValidator, appGenTxs []json.RawMessage, persistentPeers string, err error) {
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var fos []os.FileInfo
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fos, err = ioutil.ReadDir(genTxsDir)
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if err != nil {
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return
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}
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genTxs := make(map[string]GenesisTx)
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var nodeIDs []string
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for _, fo := range fos {
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filename := path.Join(genTxsDir, fo.Name())
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if !fo.IsDir() && (path.Ext(filename) != ".json") {
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continue
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}
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// get the genTx
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var bz []byte
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bz, err = ioutil.ReadFile(filename)
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if err != nil {
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return
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}
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var genTx GenesisTx
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err = cdc.UnmarshalJSON(bz, &genTx)
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if err != nil {
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return
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}
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genTxs[genTx.NodeID] = genTx
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nodeIDs = append(nodeIDs, genTx.NodeID)
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}
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sort.Strings(nodeIDs)
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for _, nodeID := range nodeIDs {
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genTx := genTxs[nodeID]
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// combine some stuff
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validators = append(validators, genTx.Validator)
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appGenTxs = append(appGenTxs, genTx.AppGenTx)
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// Add a persistent peer
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comma := ","
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if len(persistentPeers) == 0 {
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comma = ""
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}
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persistentPeers += fmt.Sprintf("%s%s@%s:26656", comma, genTx.NodeID, genTx.IP)
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}
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return
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}
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//________________________________________________________________________________________
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// read of create the private key file for this config
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func readOrCreatePrivValidator(tmConfig *cfg.Config) crypto.PubKey {
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// private validator
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privValFile := tmConfig.PrivValidatorFile()
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var privValidator *pvm.FilePV
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if cmn.FileExists(privValFile) {
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privValidator = pvm.LoadFilePV(privValFile)
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} else {
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privValidator = pvm.GenFilePV(privValFile)
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privValidator.Save()
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}
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return privValidator.GetPubKey()
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}
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// create the genesis file
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func writeGenesisFile(cdc *wire.Codec, genesisFile, chainID string, validators []tmtypes.GenesisValidator, appState json.RawMessage) error {
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genDoc := tmtypes.GenesisDoc{
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ChainID: chainID,
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Validators: validators,
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}
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if err := genDoc.ValidateAndComplete(); err != nil {
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return err
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}
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if err := genDoc.SaveAs(genesisFile); err != nil {
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return err
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}
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return addAppStateToGenesis(cdc, genesisFile, appState)
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}
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// Add one line to the genesis file
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func addAppStateToGenesis(cdc *wire.Codec, genesisConfigPath string, appState json.RawMessage) error {
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bz, err := ioutil.ReadFile(genesisConfigPath)
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if err != nil {
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return err
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}
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out, err := AppendJSON(cdc, bz, "app_state", appState)
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if err != nil {
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return err
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}
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return ioutil.WriteFile(genesisConfigPath, out, 0600)
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}
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//_____________________________________________________________________
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// Core functionality passed from the application to the server init command
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type AppInit struct {
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// flags required for application init functions
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FlagsAppGenState *pflag.FlagSet
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FlagsAppGenTx *pflag.FlagSet
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// create the application genesis tx
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AppGenTx func(cdc *wire.Codec, pk crypto.PubKey) (
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appGenTx, cliPrint json.RawMessage, validator tmtypes.GenesisValidator, err error)
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// AppGenState creates the core parameters initialization. It takes in a
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// pubkey meant to represent the pubkey of the validator of this machine.
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AppGenState func(cdc *wire.Codec, appGenTxs []json.RawMessage) (appState json.RawMessage, err error)
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}
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//_____________________________________________________________________
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// simple default application init
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var DefaultAppInit = AppInit{
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AppGenTx: SimpleAppGenTx,
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AppGenState: SimpleAppGenState,
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}
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// simple genesis tx
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type SimpleGenTx struct {
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Addr sdk.Address `json:"addr"`
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}
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// Generate a genesis transaction
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func SimpleAppGenTx(cdc *wire.Codec, pk crypto.PubKey) (
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appGenTx, cliPrint json.RawMessage, validator tmtypes.GenesisValidator, err error) {
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var addr sdk.Address
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var secret string
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addr, secret, err = GenerateCoinKey()
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if err != nil {
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return
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}
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var bz []byte
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simpleGenTx := SimpleGenTx{addr}
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bz, err = cdc.MarshalJSON(simpleGenTx)
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if err != nil {
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return
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}
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appGenTx = json.RawMessage(bz)
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mm := map[string]string{"secret": secret}
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bz, err = cdc.MarshalJSON(mm)
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if err != nil {
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return
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}
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cliPrint = json.RawMessage(bz)
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validator = tmtypes.GenesisValidator{
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PubKey: pk,
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Power: 10,
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}
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return
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}
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// create the genesis app state
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func SimpleAppGenState(cdc *wire.Codec, appGenTxs []json.RawMessage) (appState json.RawMessage, err error) {
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if len(appGenTxs) != 1 {
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err = errors.New("must provide a single genesis transaction")
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return
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}
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var genTx SimpleGenTx
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err = cdc.UnmarshalJSON(appGenTxs[0], &genTx)
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if err != nil {
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return
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}
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appState = json.RawMessage(fmt.Sprintf(`{
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"accounts": [{
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"address": "%s",
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"coins": [
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{
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"denom": "mycoin",
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"amount": 9007199254740992
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}
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]
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}]
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}`, genTx.Addr.String()))
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return
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}
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//___________________________________________________________________________________________
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// GenerateCoinKey returns the address of a public key, along with the secret
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// phrase to recover the private key.
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func GenerateCoinKey() (sdk.Address, string, error) {
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// construct an in-memory key store
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codec, err := words.LoadCodec("english")
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if err != nil {
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return nil, "", err
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}
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keybase := keys.New(
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dbm.NewMemDB(),
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codec,
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)
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// generate a private key, with recovery phrase
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info, secret, err := keybase.Create("name", "pass", keys.AlgoEd25519)
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if err != nil {
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return nil, "", err
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}
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addr := info.PubKey.Address()
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return addr, secret, nil
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}
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// GenerateSaveCoinKey returns the address of a public key, along with the secret
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// phrase to recover the private key.
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func GenerateSaveCoinKey(clientRoot, keyName, keyPass string, overwrite bool) (sdk.Address, string, error) {
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// get the keystore from the client
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keybase, err := clkeys.GetKeyBaseFromDir(clientRoot)
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if err != nil {
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return nil, "", err
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}
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// ensure no overwrite
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if !overwrite {
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_, err := keybase.Get(keyName)
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if err == nil {
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return nil, "", errors.New("key already exists, overwrite is disabled")
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}
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}
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// generate a private key, with recovery phrase
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info, secret, err := keybase.Create(keyName, keyPass, keys.AlgoEd25519)
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if err != nil {
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return nil, "", err
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}
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addr := info.PubKey.Address()
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return addr, secret, nil
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}
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