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keybase.go
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keybase.go
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// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
package keybase
import (
"encoding/base64"
"errors"
"fmt"
"net"
"sync"
"strings"
"github.com/keybase/client/go/externals"
"github.com/keybase/client/go/libkb"
"github.com/keybase/client/go/logger"
"github.com/keybase/client/go/protocol/keybase1"
"github.com/keybase/client/go/pvlsource"
"github.com/keybase/client/go/service"
"github.com/keybase/go-framed-msgpack-rpc/rpc"
"github.com/keybase/kbfs/fsrpc"
"github.com/keybase/kbfs/libkbfs"
)
var kbCtx *libkb.GlobalContext
var conn net.Conn
var startOnce sync.Once
var logSendContext libkb.LogSendContext
var kbfsConfig libkbfs.Config
type ExternalDNSNSFetcher interface {
GetServers() []byte
}
type dnsNSFetcher struct {
externalFetcher ExternalDNSNSFetcher
}
func newDNSNSFetcher(d ExternalDNSNSFetcher) dnsNSFetcher {
return dnsNSFetcher{
externalFetcher: d,
}
}
func (d dnsNSFetcher) processExternalResult(raw []byte) []string {
return strings.Split(string(raw), ",")
}
func (d dnsNSFetcher) GetServers() []string {
if d.externalFetcher != nil {
return d.processExternalResult(d.externalFetcher.GetServers())
}
return getDNSServers()
}
var _ libkb.DNSNameServerFetcher = dnsNSFetcher{}
// InitOnce runs the Keybase services (only runs one time)
func InitOnce(homeDir string, logFile string, runModeStr string, accessGroupOverride bool,
dnsNSFetcher ExternalDNSNSFetcher) {
startOnce.Do(func() {
if err := Init(homeDir, logFile, runModeStr, accessGroupOverride, dnsNSFetcher); err != nil {
kbCtx.Log.Errorf("Init error: %s", err)
}
})
}
// Init runs the Keybase services
func Init(homeDir string, logFile string, runModeStr string, accessGroupOverride bool,
externalDNSNSFetcher ExternalDNSNSFetcher) error {
fmt.Println("Go: Initializing")
if logFile != "" {
fmt.Printf("Go: Using log: %s\n", logFile)
}
dnsNSFetcher := newDNSNSFetcher(externalDNSNSFetcher)
dnsServers := dnsNSFetcher.GetServers()
for _, srv := range dnsServers {
fmt.Printf("Go: DNS Server: %s\n", srv)
}
kbCtx = libkb.G
kbCtx.Init()
kbCtx.SetServices(externals.GetServices())
pvlsource.NewPvlSourceAndInstall(kbCtx)
usage := libkb.Usage{
Config: true,
API: true,
KbKeyring: true,
}
runMode, err := libkb.StringToRunMode(runModeStr)
if err != nil {
return err
}
config := libkb.AppConfig{
HomeDir: homeDir,
LogFile: logFile,
RunMode: runMode,
Debug: true,
LocalRPCDebug: "",
SecurityAccessGroupOverride: accessGroupOverride,
}
err = kbCtx.Configure(config, usage)
if err != nil {
return err
}
svc := service.NewService(kbCtx, false)
err = svc.StartLoopbackServer()
if err != nil {
return err
}
kbCtx.SetService()
uir := service.NewUIRouter(kbCtx)
kbCtx.SetUIRouter(uir)
kbCtx.SetDNSNameServerFetcher(dnsNSFetcher)
svc.RunBackgroundOperations(uir)
serviceLog := config.GetLogFile()
logs := libkb.Logs{
Service: serviceLog,
}
logSendContext = libkb.LogSendContext{
Contextified: libkb.NewContextified(kbCtx),
Logs: logs,
}
go func() {
kbfsParams := libkbfs.DefaultInitParams(kbCtx)
// Setting this flag will enable KBFS debug logging to alway be
// true in a mobile setting. Kill this setting if too spammy.
kbfsParams.Debug = true
kbfsParams.Mode = libkbfs.InitMinimalString
kbfsConfig, _ = libkbfs.Init(kbCtx, kbfsParams, serviceCn{}, func() {}, kbCtx.Log)
}()
return Reset()
}
type serviceCn struct {
ctx *libkb.GlobalContext
}
func (s serviceCn) NewKeybaseService(config libkbfs.Config, params libkbfs.InitParams, ctx libkbfs.Context, log logger.Logger) (libkbfs.KeybaseService, error) {
keybaseService := libkbfs.NewKeybaseDaemonRPC(config, ctx, log, true, nil)
keybaseService.AddProtocols([]rpc.Protocol{
keybase1.FsProtocol(fsrpc.NewFS(config, log)),
})
return keybaseService, nil
}
func (s serviceCn) NewCrypto(config libkbfs.Config, params libkbfs.InitParams, ctx libkbfs.Context, log logger.Logger) (libkbfs.Crypto, error) {
return libkbfs.NewCryptoClientRPC(config, ctx), nil
}
// LogSend sends a log to Keybase
func LogSend(feedback string, sendLogs bool, uiLogPath string) (string, error) {
logSendContext.Logs.Desktop = uiLogPath
return logSendContext.LogSend("", feedback, sendLogs, 5*1024*1024)
}
// WriteB64 sends a base64 encoded msgpack rpc payload
func WriteB64(str string) error {
data, err := base64.StdEncoding.DecodeString(str)
if err != nil {
return fmt.Errorf("Base64 decode error: %s; %s", err, str)
}
n, err := conn.Write(data)
if err != nil {
return fmt.Errorf("Write error: %s", err)
}
if n != len(data) {
return errors.New("Did not write all the data")
}
return nil
}
const targetBufferSize = 50 * 1024
// bufferSize must be divisible by 3 to ensure that we don't split
// our b64 encode across a payload boundary if we go over our buffer
// size.
const bufferSize = targetBufferSize - (targetBufferSize % 3)
// buffer for the conn.Read
var buffer = make([]byte, bufferSize)
// ReadB64 is a blocking read for base64 encoded msgpack rpc data.
// It is called serially by the mobile run loops.
func ReadB64() (string, error) {
n, err := conn.Read(buffer)
if n > 0 && err == nil {
str := base64.StdEncoding.EncodeToString(buffer[0:n])
return str, nil
}
if err != nil {
// Attempt to fix the connection
Reset()
return "", fmt.Errorf("Read error: %s", err)
}
return "", nil
}
// Reset resets the socket connection
func Reset() error {
if conn != nil {
conn.Close()
}
var err error
conn, err = kbCtx.LoopbackListener.Dial()
if err != nil {
return fmt.Errorf("Socket error: %s", err)
}
return nil
}
// Version returns semantic version string
func Version() string {
return libkb.VersionString()
}