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init.go
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init.go
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package main
import (
"errors"
"fmt"
"io"
"os"
"path"
assets "github.com/ipfs/go-ipfs/assets"
cmds "github.com/ipfs/go-ipfs/commands"
core "github.com/ipfs/go-ipfs/core"
namesys "github.com/ipfs/go-ipfs/namesys"
config "github.com/ipfs/go-ipfs/repo/config"
fsrepo "github.com/ipfs/go-ipfs/repo/fsrepo"
context "gx/ipfs/QmZy2y8t9zQH2a1b8q2ZSLKp17ATuJoCNxxyMFG5qFExpt/go-net/context"
)
const nBitsForKeypairDefault = 2048
var initCmd = &cmds.Command{
Helptext: cmds.HelpText{
Tagline: "Initializes IPFS config file.",
ShortDescription: `
Initializes IPFS configuration files and generates a new keypair.
IPFS_PATH environment variable
ipfs uses a repository in the local file system. By default, the repo is located
at ~/.ipfs. To change the repo location, set the $IPFS_PATH environment variable:
export IPFS_PATH=/path/to/ipfsrepo
`,
},
Options: []cmds.Option{
cmds.IntOption("bits", "b", fmt.Sprintf("Number of bits to use in the generated RSA private key (defaults to %d)", nBitsForKeypairDefault)),
cmds.BoolOption("force", "f", "Overwrite existing config (if it exists)."),
cmds.BoolOption("empty-repo", "e", "Don't add and pin help files to the local storage."),
// TODO need to decide whether to expose the override as a file or a
// directory. That is: should we allow the user to also specify the
// name of the file?
// TODO cmds.StringOption("event-logs", "l", "Location for machine-readable event logs."),
},
PreRun: func(req cmds.Request) error {
daemonLocked, err := fsrepo.LockedByOtherProcess(req.InvocContext().ConfigRoot)
if err != nil {
return err
}
log.Info("checking if daemon is running...")
if daemonLocked {
e := "ipfs daemon is running. please stop it to run this command"
return cmds.ClientError(e)
}
return nil
},
Run: func(req cmds.Request, res cmds.Response) {
if req.InvocContext().Online {
res.SetError(errors.New("init must be run offline only!"), cmds.ErrNormal)
return
}
force, _, err := req.Option("f").Bool() // if !found, it's okay force == false
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
empty, _, err := req.Option("e").Bool() // if !empty, it's okay empty == false
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
nBitsForKeypair, bitsOptFound, err := req.Option("b").Int()
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
if !bitsOptFound {
nBitsForKeypair = nBitsForKeypairDefault
}
if err := doInit(os.Stdout, req.InvocContext().ConfigRoot, force, empty, nBitsForKeypair); err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
},
}
var errRepoExists = errors.New(`ipfs configuration file already exists!
Reinitializing would overwrite your keys.
(use -f to force overwrite)
`)
func initWithDefaults(out io.Writer, repoRoot string) error {
return doInit(out, repoRoot, false, false, nBitsForKeypairDefault)
}
func doInit(out io.Writer, repoRoot string, force bool, empty bool, nBitsForKeypair int) error {
if _, err := fmt.Fprintf(out, "initializing ipfs node at %s\n", repoRoot); err != nil {
return err
}
if err := checkWriteable(repoRoot); err != nil {
return err
}
if fsrepo.IsInitialized(repoRoot) && !force {
return errRepoExists
}
conf, err := config.Init(out, nBitsForKeypair)
if err != nil {
return err
}
if fsrepo.IsInitialized(repoRoot) {
if err := fsrepo.Remove(repoRoot); err != nil {
return err
}
}
if err := fsrepo.Init(repoRoot, conf); err != nil {
return err
}
if !empty {
if err := addDefaultAssets(out, repoRoot); err != nil {
return err
}
}
return initializeIpnsKeyspace(repoRoot)
}
func checkWriteable(dir string) error {
_, err := os.Stat(dir)
if err == nil {
// dir exists, make sure we can write to it
testfile := path.Join(dir, "test")
fi, err := os.Create(testfile)
if err != nil {
if os.IsPermission(err) {
return fmt.Errorf("%s is not writeable by the current user", dir)
}
return fmt.Errorf("unexpected error while checking writeablility of repo root: %s", err)
}
fi.Close()
return os.Remove(testfile)
}
if os.IsNotExist(err) {
// dir doesnt exist, check that we can create it
return os.Mkdir(dir, 0775)
}
if os.IsPermission(err) {
return fmt.Errorf("cannot write to %s, incorrect permissions", err)
}
return err
}
func addDefaultAssets(out io.Writer, repoRoot string) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
r, err := fsrepo.Open(repoRoot)
if err != nil { // NB: repo is owned by the node
return err
}
nd, err := core.NewNode(ctx, &core.BuildCfg{Repo: r})
if err != nil {
return err
}
defer nd.Close()
dkey, err := assets.SeedInitDocs(nd)
if err != nil {
return fmt.Errorf("init: seeding init docs failed: %s", err)
}
log.Debugf("init: seeded init docs %s", dkey)
if _, err = fmt.Fprintf(out, "to get started, enter:\n"); err != nil {
return err
}
_, err = fmt.Fprintf(out, "\n\tipfs cat /ipfs/%s/readme\n\n", dkey)
return err
}
func initializeIpnsKeyspace(repoRoot string) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
r, err := fsrepo.Open(repoRoot)
if err != nil { // NB: repo is owned by the node
return err
}
nd, err := core.NewNode(ctx, &core.BuildCfg{Repo: r})
if err != nil {
return err
}
defer nd.Close()
err = nd.SetupOfflineRouting()
if err != nil {
return err
}
return namesys.InitializeKeyspace(ctx, nd.DAG, nd.Namesys, nd.Pinning, nd.PrivateKey)
}