/
main.go
100 lines (89 loc) · 2.27 KB
/
main.go
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package main
import (
"errors"
"fmt"
"log"
"os"
"github.com/jschwinger233/grpcdump/grpchelper"
"github.com/jschwinger233/grpcdump/grpchelper/grpcurl"
"github.com/jschwinger233/grpcdump/handler"
"github.com/jschwinger233/grpcdump/handler/jsonhandler"
"github.com/jschwinger233/grpcdump/handler/texthandler"
"github.com/jschwinger233/grpcdump/parser"
"github.com/jschwinger233/grpcdump/parser/grpcparser"
"github.com/jschwinger233/grpcdump/provider"
"github.com/jschwinger233/grpcdump/provider/pcaprovider"
"github.com/jschwinger233/grpcdump/provider/sniffprovider"
"github.com/jschwinger233/grpcdump/version"
cli "github.com/urfave/cli/v2"
)
func main() {
var (
provider provider.Provider
parser parser.Parser
handler handler.GrpcHandler
)
cli.VersionPrinter = func(c *cli.Context) {
fmt.Println(version.Version())
}
app := cli.NewApp()
app.Flags = flags
app.Usage = "A tool to sniff and decode gRPC frames"
app.Version = "--version/-v"
app.Before = func(ctx *cli.Context) (err error) {
args, err := newArgs(ctx)
if err != nil {
return
}
switch args.ProvideMethod {
case BySniff:
provider = sniffprovider.New(args.Source)
case ByPcapFile:
provider = pcaprovider.New(args.Source)
default:
return errors.New("provider not specified")
}
protoParser, err := grpchelper.NewProtoParser(args.ProtoFilenames)
if err != nil {
return
}
parser, err = grpcparser.New(protoParser, args.ServicePort, args.GuessPaths)
if err != nil {
return
}
var grpcurlManager *grpcurl.Manager
if args.WithGrpcurl {
grpcurlManager = grpcurl.New(protoParser.GetPathFilenames())
}
switch args.OutputFormat {
case Text:
handler = texthandler.New(grpcurlManager)
case Json:
handler = jsonhandler.New(grpcurlManager)
default:
return errors.New("output format not specified")
}
return
}
app.Action = func(ctx *cli.Context) (err error) {
ch, err := provider.PacketStream()
if err != nil {
return
}
for packet := range ch {
messages, err := parser.Parse(packet)
if err != nil {
return err
}
for _, message := range messages {
if err := handler.Handle(message); err != nil {
return err
}
}
}
return
}
if err := app.Run(os.Args); err != nil {
log.Fatalf("failed to run app: %+v", err)
}
}