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server.go
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server.go
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package server
import (
"encoding/json"
"io/ioutil"
"github.com/keys-pub/keys"
"github.com/keys-pub/keys/dstore"
"github.com/keys-pub/keys/dstore/events"
"github.com/keys-pub/keys/encoding"
"github.com/keys-pub/keys/http"
"github.com/keys-pub/keys/tsutil"
"github.com/keys-pub/keys/users"
"github.com/labstack/echo/v4"
"github.com/vmihailenco/msgpack/v4"
"github.com/pkg/errors"
)
// TODO: Support If-Modified-Since
// TODO: Turn off logging
// Server ...
type Server struct {
fi Fire
rds Redis
clock tsutil.Clock
logger Logger
client http.Client
// URL (base) of form http(s)://host:port with no trailing slash to help
// authorization checks in testing where the host is ambiguous.
URL string
users *users.Users
sigchains *keys.Sigchains
tasks Tasks
// internalAuth token for authorizing internal services.
internalAuth string
// admins are key ids that can do admin actions on the server.
admins []keys.ID
// internalKey for encrypting between internal services.
internalKey *[32]byte
// tokenKey for JWT vault tokens
tokenKey []byte
emailer Emailer
}
// Fire defines interface for remote store (like Firestore).
type Fire interface {
dstore.Documents
events.Events
}
// New creates a Server.
func New(fi Fire, rds Redis, client http.Client, clock tsutil.Clock, logger Logger) *Server {
sigchains := keys.NewSigchains(fi)
usrs := users.New(fi, sigchains, users.Client(client), users.Clock(clock))
return &Server{
fi: fi,
rds: rds,
client: client,
clock: clock,
tasks: newUnsetTasks(),
sigchains: sigchains,
users: usrs,
logger: logger,
}
}
// Emailer sends emails.
type Emailer interface {
SendVerificationEmail(email string, code string) error
}
// SetInternalAuth for authorizing internal requests, like tasks.
func (s *Server) SetInternalAuth(internalAuth string) {
s.internalAuth = internalAuth
}
// SetTokenKey for setting token key.
func (s *Server) SetTokenKey(tokenKey string) error {
if tokenKey == "" {
return errors.Errorf("empty token key")
}
k, err := encoding.Decode(tokenKey, encoding.Hex)
if err != nil {
return err
}
s.tokenKey = k
return nil
}
// SetEmailer sets emailer.
func (s *Server) SetEmailer(emailer Emailer) {
s.emailer = emailer
}
// SetInternalKey for encrypting between internal services.
func (s *Server) SetInternalKey(internalKey string) error {
if internalKey == "" {
return errors.Errorf("empty internal key")
}
sk, err := encoding.Decode(internalKey, encoding.Hex)
if err != nil {
return err
}
s.internalKey = keys.Bytes32(sk)
return nil
}
// SetAdmins sets authorized admins.
func (s *Server) SetAdmins(admins []keys.ID) {
s.admins = admins
}
// SetTasks ...
func (s *Server) SetTasks(tasks Tasks) {
s.tasks = tasks
}
// NewHandler returns http.Handler for Server.
func NewHandler(s *Server) http.Handler {
return newHandler(s)
}
func newHandler(s *Server) *echo.Echo {
e := echo.New()
e.HTTPErrorHandler = s.ErrorHandler
s.AddRoutes(e)
return e
}
// AddRoutes adds routes to an Echo instance.
func (s *Server) AddRoutes(e *echo.Echo) {
e.GET("/sigchain/:kid/:seq", s.getSigchainStatement)
e.PUT("/sigchain/:kid/:seq", s.putSigchainStatement)
e.GET("/sigchain/:kid", s.getSigchain)
e.POST("/check", s.check)
e.GET("/user/search", s.getUserSearch)
e.GET("/user/:user", s.getUser)
// Tasks
e.POST("/task/check/:kid", s.taskCheck)
// Cron
e.POST("/cron/check", s.cronCheck)
// Vault
e.POST("/vault/:vid", s.postVault)
e.GET("/vault/:vid", s.listVault)
e.DELETE("/vault/:vid", s.deleteVault)
e.HEAD("/vault/:vid", s.headVault)
// Disco
e.PUT("/disco/:kid/:rid/:type", s.putDisco)
e.GET("/disco/:kid/:rid/:type", s.getDisco)
e.DELETE("/disco/:kid/:rid", s.deleteDisco)
// Invite Code
e.POST("/invite/code/:kid/:rid", s.postInviteCode)
e.GET("/invite/code/:code", s.getInviteCode)
// Share
e.GET("/share/:kid", s.getShare)
e.PUT("/share/:kid", s.putShare)
// Batch
e.POST("/batch", s.postBatch) // Batch
// Twitter
e.GET("/twitter/:kid/:name/:id", s.checkTwitter)
// Admin
e.POST("/admin/check/:kid", s.adminCheck)
// Sigchain (aliases)
e.GET("/:kid", s.getSigchainAliased)
e.GET("/:kid/:seq", s.getSigchainStatementAliased)
e.PUT("/:kid/:seq", s.putSigchainStatementAliased)
}
// SetClock sets clock.
func (s *Server) SetClock(clock tsutil.Clock) {
s.clock = clock
}
// JSON response.
func JSON(c echo.Context, status int, i interface{}) error {
var b []byte
switch v := i.(type) {
case []byte:
b = v
default:
mb, err := json.Marshal(i)
if err != nil {
panic(err)
}
b = mb
}
return c.Blob(status, echo.MIMEApplicationJSONCharsetUTF8, b)
}
// Msgpack response.
func Msgpack(c echo.Context, status int, i interface{}) error {
var b []byte
switch v := i.(type) {
case []byte:
b = v
default:
mb, err := msgpack.Marshal(i)
if err != nil {
panic(err)
}
b = mb
}
return c.Blob(status, echo.MIMEApplicationMsgpack, b)
}
func (s *Server) checkInternalAuth(c echo.Context) error {
if s.internalAuth == "" {
return s.ErrForbidden(c, errors.Errorf("no auth token set on server"))
}
auth := c.Request().Header.Get("Authorization")
if auth == "" {
return s.ErrForbidden(c, errors.Errorf("no auth token specified"))
}
if auth != s.internalAuth {
return s.ErrForbidden(c, errors.Errorf("invalid auth token"))
}
return nil
}
func readBody(c echo.Context, required bool, maxLength int) ([]byte, error) {
br := c.Request().Body
if br == nil {
if !required {
return []byte{}, nil
}
return nil, newError(http.StatusBadRequest, errors.Errorf("missing body"))
}
b, err := ioutil.ReadAll(br)
if err != nil {
return nil, newError(http.StatusInternalServerError, err)
}
if len(b) > maxLength {
// TODO: Check length before reading data
return nil, newError(http.StatusRequestEntityTooLarge, errors.Errorf("request too large"))
}
if len(b) == 0 && required {
return nil, newError(http.StatusBadRequest, errors.Errorf("no body data"))
}
return b, nil
}