Files
OliveTin/internal/httpservers/restapi.go
2023-02-16 16:21:53 +00:00

97 lines
2.1 KiB
Go

package httpservers
import (
"context"
"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
log "github.com/sirupsen/logrus"
"google.golang.org/grpc"
"google.golang.org/grpc/metadata"
"google.golang.org/protobuf/encoding/protojson"
"net/http"
gw "github.com/OliveTin/OliveTin/gen/grpc"
config "github.com/OliveTin/OliveTin/internal/config"
cors "github.com/OliveTin/OliveTin/internal/cors"
)
var (
cfg *config.Config
)
func parseHttpHeaderForAuth(req *http.Request) (string, string) {
username, ok := req.Header[cfg.AuthHttpHeaderUsername]
if !ok {
return "", ""
}
if cfg.AuthHttpHeaderUserGroup != "" {
usergroup, ok := req.Header[cfg.AuthHttpHeaderUserGroup]
if ok {
return username[0], usergroup[0]
}
}
return username[0], ""
}
func parseRequestMetadata(ctx context.Context, req *http.Request) metadata.MD {
username := ""
usergroup := ""
if cfg.AuthJwtCookieName != "" {
username, usergroup = parseJwtCookie(req)
}
if cfg.AuthHttpHeaderUsername != "" {
username, usergroup = parseHttpHeaderForAuth(req)
}
md := metadata.Pairs(
"username", username,
"usergroup", usergroup,
)
log.Debugf("jwt usable claims: %+v", md)
return md
}
func startRestAPIServer(globalConfig *config.Config) error {
cfg = globalConfig
log.WithFields(log.Fields{
"address": cfg.ListenAddressGrpcActions,
}).Info("Starting REST API")
ctx := context.Background()
ctx, cancel := context.WithCancel(ctx)
defer cancel()
// The JSONPb.EmitDefaults is necssary, so "empty" fields are returned in JSON.
mux := runtime.NewServeMux(
runtime.WithMetadata(parseRequestMetadata),
runtime.WithMarshalerOption(runtime.MIMEWildcard, &runtime.HTTPBodyMarshaler{
Marshaler: &runtime.JSONPb{
MarshalOptions: protojson.MarshalOptions{
UseProtoNames: true,
EmitUnpopulated: true,
},
},
}),
)
opts := []grpc.DialOption{grpc.WithInsecure()}
err := gw.RegisterOliveTinApiHandlerFromEndpoint(ctx, mux, cfg.ListenAddressGrpcActions, opts)
if err != nil {
log.Errorf("Could not register REST API Handler %v", err)
return err
}
return http.ListenAndServe(cfg.ListenAddressRestActions, cors.AllowCors(mux))
}