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plugins.go
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plugins.go
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package grpc
import (
"context"
"fmt"
"time"
"github.com/micro/go-micro"
"github.com/micro/go-micro/metadata"
"github.com/micro/go-micro/server"
"github.com/spf13/viper"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/auth"
"github.com/pydio/cells/common/config"
"github.com/pydio/cells/common/crypto/providers"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/plugins"
"github.com/pydio/cells/common/proto/install"
"github.com/pydio/cells/common/proto/tree"
"github.com/pydio/cells/common/service"
servicecontext "github.com/pydio/cells/common/service/context"
"github.com/pydio/cells/common/utils/net"
)
func init() {
microServiceWithLog := func(ctx context.Context, msg string) func(micro.Service) error {
return func(m micro.Service) error {
log.Logger(ctx).Info(msg)
m.Init(micro.WrapHandler(jwtWrapper(m.Options().Context), httpMetaWrapper()))
h := &TreeHandler{}
srv := m.Options().Server
tree.RegisterNodeProviderHandler(srv, h)
tree.RegisterNodeReceiverHandler(srv, h)
tree.RegisterNodeChangesStreamerHandler(srv, h)
tree.RegisterNodeProviderStreamerHandler(srv, h)
tree.RegisterNodeReceiverStreamHandler(srv, h)
return nil
}
}
// Build options - optionally force port
baseOpts := []service.ServiceOption{
service.Tag(common.ServiceTagGateway),
service.Dependency(common.ServiceGrpcNamespace_+common.ServiceTree, []string{}),
service.Dependency(common.ServiceGatewayProxy, []string{}),
/*
service.WithMicro(func(m micro.Service) error {
m.Init(micro.WrapHandler(jwtWrapper(m.Options().Context), httpMetaWrapper()))
h := &TreeHandler{}
srv := m.Options().Server
tree.RegisterNodeProviderHandler(srv, h)
tree.RegisterNodeReceiverHandler(srv, h)
tree.RegisterNodeChangesStreamerHandler(srv, h)
tree.RegisterNodeProviderStreamerHandler(srv, h)
tree.RegisterNodeReceiverStreamHandler(srv, h)
return nil
}),
*/
}
tlsOpts := append(baseOpts,
service.Name(common.ServiceGatewayGrpc),
service.Description("External gRPC Access (tls)"),
)
clearOpts := append(baseOpts,
service.Name(common.ServiceGatewayGrpcClear),
service.Description("External gRPC Access (clear)"),
)
plugins.Register("main", func(ctx context.Context) {
ss, _ := config.LoadSites()
var hasClear, hasTls bool
for _, s := range ss {
if s.HasTLS() {
hasTls = true
} else {
hasClear = true
}
}
if hasClear {
var p string
if port := viper.GetString("grpc_external"); port != "" {
p = port
} else {
p = fmt.Sprintf("%d", net.GetAvailablePort())
}
logCtx := servicecontext.WithServiceName(ctx, common.ServiceGatewayGrpcClear)
clearOpts = append(clearOpts,
service.Port(p),
service.Context(ctx),
service.WithMicro(microServiceWithLog(logCtx, "Starting HTTP only gRPC gateway. Will be accessed directly through port "+p)),
)
service.NewService(clearOpts...)
}
if hasTls {
logCtx := servicecontext.WithServiceName(ctx, common.ServiceGatewayGrpc)
tlsOpts = append(tlsOpts,
service.Context(ctx),
service.WithMicro(microServiceWithLog(logCtx, "Activating self-signed configuration for gRPC gateway to allow full TLS chain.")),
)
localConfig := &install.ProxyConfig{
Binds: []string{common.ServiceGatewayGrpc},
TLSConfig: &install.ProxyConfig_SelfSigned{SelfSigned: &install.TLSSelfSigned{}},
}
if tls, e := providers.LoadTLSServerConfig(localConfig); e == nil {
tlsOpts = append(tlsOpts, service.WithTLSConfig(tls))
}
service.NewService(tlsOpts...)
}
/*
if len(ss) == 1 && !ss[0].HasTLS() {
// This is a simple config without TLS - Access will be direct not through proxy
//fmt.Println("[NO-TLS] " + common.ServiceGatewayGrpc + " served as HTTP and should be accessed directly (no TLS)")
if port := viper.Get("grpc_external"); port != nil {
log.Logger(ctx).Info("Using HTTP configuration for gRPC gateway. Should be accessed directly through port " + port.(string))
tlsOpts = append(tlsOpts, service.Port(port.(string)))
} else {
log.Logger(ctx).Info("Using HTTP configuration for gRPC gateway. Should be accessed directly on this service port")
}
} else {
log.Logger(ctx).Info("Activating self-signed configuration for gRPC gateway to allow full TLS chain.")
localConfig := &install.ProxyConfig{
Binds: []string{common.ServiceGatewayGrpc},
TLSConfig: &install.ProxyConfig_SelfSigned{SelfSigned: &install.TLSSelfSigned{}},
}
if tls, e := providers.LoadTLSServerConfig(localConfig); e == nil {
//fmt.Println("[TLS] Activating self-signed TLS on " + common.ServiceGatewayGrpc)
tlsOpts = append(tlsOpts, service.WithTLSConfig(tls))
}
}
tlsOpts = append(tlsOpts, service.Context(ctx))
service.NewService(tlsOpts...)
*/
})
}
// jwtWrapper extracts x-pydio-bearer metadata to validate authentication
func jwtWrapper(serviceCtx context.Context) func(handlerFunc server.HandlerFunc) server.HandlerFunc {
jwtVerifier := auth.DefaultJWTVerifier()
return func(handlerFunc server.HandlerFunc) server.HandlerFunc {
return func(ctx context.Context, req server.Request, rsp interface{}) error {
if meta, ok := metadata.FromContext(ctx); ok {
bearer, o := meta["x-pydio-bearer"] //strings.Join(meta.Get("x-pydio-bearer"), "")
if o {
var err error
ctx, _, err = jwtVerifier.Verify(ctx, bearer)
if err != nil {
log.Auditer(serviceCtx).Error(
"Blocked invalid JWT",
log.GetAuditId(common.AuditInvalidJwt),
)
return err
} else {
log.Logger(serviceCtx).Debug("Got valid Claims from Bearer!")
}
}
}
return handlerFunc(ctx, req, rsp)
}
}
}
// httpMetaWrapper translates gRPC meta headers (lowercase x-header-name) to standard cells metadata
func httpMetaWrapper() func(handlerFunc server.HandlerFunc) server.HandlerFunc {
return func(handlerFunc server.HandlerFunc) server.HandlerFunc {
return func(ctx context.Context, req server.Request, rsp interface{}) error {
return handlerFunc(ctxRequestInfoToMetadata(ctx), req, rsp)
}
}
}
func ctxRequestInfoToMetadata(ctx context.Context) context.Context {
meta := metadata.Metadata{}
if existing, ok := metadata.FromContext(ctx); ok {
if _, already := existing[servicecontext.HttpMetaExtracted]; already {
return ctx
}
translate := map[string]string{
"user-agent": servicecontext.HttpMetaUserAgent,
"content-type": servicecontext.HttpMetaContentType,
"x-forwarded-for": servicecontext.HttpMetaRemoteAddress,
"x-pydio-span-id": servicecontext.SpanMetadataId,
}
for k, v := range existing {
if newK, ok := translate[k]; ok {
meta[newK] = v
} else {
meta[k] = v
}
}
// Override with specific header
if ua, ok := existing["x-pydio-grpc-user-agent"]; ok {
meta[servicecontext.HttpMetaUserAgent] = ua
}
}
meta[servicecontext.HttpMetaExtracted] = servicecontext.HttpMetaExtracted
layout := "2006-01-02T15:04-0700"
t := time.Now()
meta[servicecontext.ServerTime] = t.Format(layout)
// We currently use server time instead of client time. TODO: Retrieve client time and locale and set it here.
meta[servicecontext.ClientTime] = t.Format(layout)
return metadata.NewContext(ctx, meta)
}