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id.go
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id.go
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package commands
import (
"bytes"
"encoding/base64"
"encoding/json"
"errors"
"io"
"strings"
b58 "gx/ipfs/QmT8rehPR3F6bmwL6zjUN8XpiDBFFpMP2myPdC6ApsWfJf/go-base58"
cmds "github.com/ipfs/go-ipfs/commands"
core "github.com/ipfs/go-ipfs/core"
kb "github.com/ipfs/go-ipfs/routing/kbucket"
ic "gx/ipfs/QmUEUu1CM8bxBJxc3ZLojAi8evhTr4byQogWstABet79oY/go-libp2p-crypto"
identify "gx/ipfs/QmVL44QeoQDTYK8RVdpkyja7uYcK3WDNoBNHVLonf9YDtm/go-libp2p/p2p/protocol/identify"
u "gx/ipfs/QmZNVWh8LLjAavuQ2JXuFmuYH3C11xo988vSgp7UQrTRj1/go-ipfs-util"
"gx/ipfs/QmbyvM8zRFDkbFdYyt1MnevUMJ62SiSGbfDFZ3Z8nkrzr4/go-libp2p-peer"
)
const offlineIdErrorMessage = `'ipfs id' currently cannot query information on remote
peers without a running daemon; we are working to fix this.
In the meantime, if you want to query remote peers using 'ipfs id',
please run the daemon:
ipfs daemon &
ipfs id QmaCpDMGvV2BGHeYERUEnRQAwe3N8SzbUtfsmvsqQLuvuJ
`
type IdOutput struct {
ID string
PublicKey string
Addresses []string
AgentVersion string
ProtocolVersion string
}
var IDCmd = &cmds.Command{
Helptext: cmds.HelpText{
Tagline: "Show IPFS Node ID info.",
ShortDescription: `
Prints out information about the specified peer.
If no peer is specified, prints out information for local peers.
'ipfs id' supports the format option for output with the following keys:
<id> : The peers id.
<aver>: Agent version.
<pver>: Protocol version.
<pubkey>: Public key.
<addrs>: Addresses (newline delimited).
EXAMPLE:
ipfs id Qmece2RkXhsKe5CRooNisBTh4SK119KrXXGmoK6V3kb8aH -f="<addrs>\n"
`,
},
Arguments: []cmds.Argument{
cmds.StringArg("peerid", false, false, "Peer.ID of node to look up.").EnableStdin(),
},
Options: []cmds.Option{
cmds.StringOption("format", "f", "Optional output format."),
},
Run: func(req cmds.Request, res cmds.Response) {
node, err := req.InvocContext().GetNode()
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
var id peer.ID
if len(req.Arguments()) > 0 {
id = peer.ID(b58.Decode(req.Arguments()[0]))
if len(id) == 0 {
res.SetError(cmds.ClientError("Invalid peer id"), cmds.ErrClient)
return
}
} else {
id = node.Identity
}
if id == node.Identity {
output, err := printSelf(node)
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
res.SetOutput(output)
return
}
// TODO handle offline mode with polymorphism instead of conditionals
if !node.OnlineMode() {
res.SetError(errors.New(offlineIdErrorMessage), cmds.ErrClient)
return
}
p, err := node.Routing.FindPeer(req.Context(), id)
if err == kb.ErrLookupFailure {
res.SetError(errors.New(offlineIdErrorMessage), cmds.ErrClient)
return
}
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
output, err := printPeer(node.Peerstore, p.ID)
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
res.SetOutput(output)
},
Marshalers: cmds.MarshalerMap{
cmds.Text: func(res cmds.Response) (io.Reader, error) {
val, ok := res.Output().(*IdOutput)
if !ok {
return nil, u.ErrCast()
}
format, found, err := res.Request().Option("format").String()
if err != nil {
return nil, err
}
if found {
output := format
output = strings.Replace(output, "<id>", val.ID, -1)
output = strings.Replace(output, "<aver>", val.AgentVersion, -1)
output = strings.Replace(output, "<pver>", val.ProtocolVersion, -1)
output = strings.Replace(output, "<pubkey>", val.PublicKey, -1)
output = strings.Replace(output, "<addrs>", strings.Join(val.Addresses, "\n"), -1)
output = strings.Replace(output, "\\n", "\n", -1)
output = strings.Replace(output, "\\t", "\t", -1)
return strings.NewReader(output), nil
} else {
marshaled, err := json.MarshalIndent(val, "", "\t")
if err != nil {
return nil, err
}
marshaled = append(marshaled, byte('\n'))
return bytes.NewReader(marshaled), nil
}
},
},
Type: IdOutput{},
}
func printPeer(ps peer.Peerstore, p peer.ID) (interface{}, error) {
if p == "" {
return nil, errors.New("Attempted to print nil peer!")
}
info := new(IdOutput)
info.ID = p.Pretty()
if pk := ps.PubKey(p); pk != nil {
pkb, err := ic.MarshalPublicKey(pk)
if err != nil {
return nil, err
}
info.PublicKey = base64.StdEncoding.EncodeToString(pkb)
}
for _, a := range ps.Addrs(p) {
info.Addresses = append(info.Addresses, a.String())
}
if v, err := ps.Get(p, "ProtocolVersion"); err == nil {
if vs, ok := v.(string); ok {
info.ProtocolVersion = vs
}
}
if v, err := ps.Get(p, "AgentVersion"); err == nil {
if vs, ok := v.(string); ok {
info.AgentVersion = vs
}
}
return info, nil
}
// printing self is special cased as we get values differently.
func printSelf(node *core.IpfsNode) (interface{}, error) {
info := new(IdOutput)
info.ID = node.Identity.Pretty()
if node.PrivateKey == nil {
if err := node.LoadPrivateKey(); err != nil {
return nil, err
}
}
pk := node.PrivateKey.GetPublic()
pkb, err := ic.MarshalPublicKey(pk)
if err != nil {
return nil, err
}
info.PublicKey = base64.StdEncoding.EncodeToString(pkb)
if node.PeerHost != nil {
for _, a := range node.PeerHost.Addrs() {
s := a.String() + "/ipfs/" + info.ID
info.Addresses = append(info.Addresses, s)
}
}
info.ProtocolVersion = identify.LibP2PVersion
info.AgentVersion = identify.ClientVersion
return info, nil
}