UI: implement SetAuth/GenerateAuth handlers for changing credentials.

routers.go

@@ -48,17 +48,14 @@ func configureServerHandler(filesystem fs.Filesystem) http.Handler {
 	}
 
 	// Initialize minio client for AWS Signature Version '4'
-	disableSSL := !isSSL() // Insecure true when SSL is false.
-	client, e := minio.NewV4(net.JoinHostPort(host, port), cred.AccessKeyID, cred.SecretAccessKey, disableSSL)
+	insecure := !isSSL() // Insecure true when SSL is false.
+	client, e := minio.NewV4(net.JoinHostPort(host, port), cred.AccessKeyID, cred.SecretAccessKey, insecure)
 	fatalIf(probe.NewError(e), "Unable to initialize minio client", nil)
 
 	// Initialize Web.
 	web := &webAPI{
-		FSPath:          filesystem.GetRootPath(),
-		Client:          client,
-		apiAddress:      addr,
-		accessKeyID:     cred.AccessKeyID,
-		secretAccessKey: cred.SecretAccessKey,
+		FSPath: filesystem.GetRootPath(),
+		Client: client,
 	}
 
 	// Initialize router.

web-handlers.go

@@ -18,6 +18,7 @@ package main
 
 import (
 	"fmt"
+	"net"
 	"net/http"
 	"net/url"
 	"os"
@@ -33,6 +34,7 @@ import (
 	"github.com/gorilla/rpc/v2/json2"
 	"github.com/minio/minio-go"
 	"github.com/minio/minio/pkg/disk"
+	"github.com/minio/minio/pkg/probe"
 	"github.com/minio/miniobrowser"
 )
 
@@ -52,6 +54,10 @@ func isJWTReqAuthenticated(req *http.Request) bool {
 	return token.Valid
 }
 
+// GenericArgs - empty struct for calls that don't accept arguments
+// for ex. ServerInfo, GenerateAuth
+type GenericArgs struct{}
+
 // GenericRep - reply structure for calls for which reply is success/failure
 // for ex. RemoveObject MakeBucket
 type GenericRep struct {
@@ -210,7 +216,6 @@ func (web *webAPI) ListObjects(r *http.Request, args *ListObjectsArgs, reply *Li
 	}
 	doneCh := make(chan struct{})
 	defer close(doneCh)
-
 	for object := range web.Client.ListObjects(args.BucketName, args.Prefix, false, doneCh) {
 		if object.Err != nil {
 			return &json2.Error{Message: object.Err.Error()}
@@ -258,8 +263,8 @@ func (web *webAPI) PutObjectURL(r *http.Request, args *PutObjectURLArgs, reply *
 
 	// disableSSL is true if no 'https:' proto is found.
 	disableSSL := (args.TargetProto != "https:")
-
-	client, e := minio.New(args.TargetHost, web.accessKeyID, web.secretAccessKey, disableSSL)
+	cred := serverConfig.GetCredential()
+	client, e := minio.New(args.TargetHost, cred.AccessKeyID, cred.SecretAccessKey, disableSSL)
 	if e != nil {
 		return &json2.Error{Message: e.Error()}
 	}
@@ -300,8 +305,8 @@ func (web *webAPI) GetObjectURL(r *http.Request, args *GetObjectURLArgs, reply *
 
 	// disableSSL is true if no 'https:' proto is found.
 	disableSSL := (args.TargetProto != "https:")
-
-	client, e := minio.New(args.TargetHost, web.accessKeyID, web.secretAccessKey, disableSSL)
+	cred := serverConfig.GetCredential()
+	client, e := minio.New(args.TargetHost, cred.AccessKeyID, cred.SecretAccessKey, disableSSL)
 	if e != nil {
 		return &json2.Error{Message: e.Error()}
 	}
@@ -364,3 +369,77 @@ func (web *webAPI) Login(r *http.Request, args *LoginArgs, reply *LoginRep) erro
 	}
 	return &json2.Error{Message: "Invalid credentials"}
 }
+
+// GenerateAuthReply - reply for GenerateAuth
+type GenerateAuthReply struct {
+	AccessKey string `json:"accessKey"`
+	SecretKey string `json:"secretKey"`
+	UIVersion string `json:"uiVersion"`
+}
+
+func (web webAPI) GenerateAuth(r *http.Request, args *GenericArgs, reply *GenerateAuthReply) error {
+	if !isJWTReqAuthenticated(r) {
+		return &json2.Error{Message: "Unauthorized request"}
+	}
+	cred := mustGenAccessKeys()
+	reply.AccessKey = cred.AccessKeyID
+	reply.SecretKey = cred.SecretAccessKey
+	reply.UIVersion = miniobrowser.UIVersion
+	return nil
+}
+
+// SetAuthArgs - argument for SetAuth
+type SetAuthArgs struct {
+	AccessKey string `json:"accessKey"`
+	SecretKey string `json:"secretKey"`
+}
+
+// SetAuthReply - reply for SetAuth
+type SetAuthReply struct {
+	Token     string `json:"token"`
+	UIVersion string `json:"uiVersion"`
+}
+
+// SetAuth - Set accessKey and secretKey credentials.
+func (web *webAPI) SetAuth(r *http.Request, args *SetAuthArgs, reply *SetAuthReply) error {
+	if !isJWTReqAuthenticated(r) {
+		return &json2.Error{Message: "Unauthorized request"}
+	}
+	if args.AccessKey == "" {
+		return &json2.Error{Message: "Empty access key not allowed"}
+	}
+	if args.SecretKey == "" {
+		return &json2.Error{Message: "Empty secret key not allowed"}
+	}
+	cred := credential{args.AccessKey, args.SecretKey}
+	serverConfig.SetCredential(cred)
+	if err := serverConfig.Save(); err != nil {
+		return &json2.Error{Message: err.Cause.Error()}
+	}
+
+	// Split host port.
+	host, port, e := net.SplitHostPort(serverConfig.GetAddr())
+	fatalIf(probe.NewError(e), "Unable to parse web addess.", nil)
+
+	// Default host is 'localhost', if no host present.
+	if host == "" {
+		host = "localhost"
+	}
+
+	client, e := minio.NewV4(net.JoinHostPort(host, port), args.AccessKey, args.SecretKey, !isSSL())
+	if e != nil {
+		return &json2.Error{Message: e.Error()}
+	}
+	web.Client = client
+	jwt := initJWT()
+	if !jwt.Authenticate(args.AccessKey, args.SecretKey) {
+		return &json2.Error{Message: "Invalid credentials"}
+	}
+	token, err := jwt.GenerateToken(args.AccessKey)
+	if err != nil {
+		return &json2.Error{Message: err.Cause.Error()}
+	}
+	reply.Token = token
+	reply.UIVersion = miniobrowser.UIVersion
+	return nil
+}

web-router.go

@@ -35,12 +35,6 @@ type webAPI struct {
 	FSPath string
 	// Minio client instance.
 	Client *minio.Client
-
-	// private params.
-	apiAddress string // api destination address.
-	// credential kept to be used internally.
-	accessKeyID     string
-	secretAccessKey string
 }
 
 // indexHandler - Handler to serve index.html