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package main
import (
"context"
"flag"
"fmt"
"encoding/base64"
"github.com/golang/glog"
"github.com/system-transparency/stfe/client"
"github.com/system-transparency/stfe/types"
)
var (
first = flag.String("first", "", "base64-encoded sth")
second = flag.String("second", "", "base64-encoded sth")
)
func main() {
flag.Parse()
defer glog.Flush()
client, err := client.NewClientFromFlags()
if err != nil {
glog.Errorf("NewClientFromFlags: %v", err)
return
}
sth1, sth2, err := newParamsFromFlags()
if err != nil {
glog.Errorf("NewRequestFromFlags: %v", err)
return
}
proof, err := client.GetConsistencyProof(context.Background(), sth1, sth2)
if err != nil {
glog.Errorf("GetConsistencyProof: %v", err)
return
}
serialized, err := types.Marshal(*proof)
if err != nil {
glog.Errorf("Marshal: %v", err)
return
}
fmt.Println("proof:", base64.StdEncoding.EncodeToString(serialized))
}
func newParamsFromFlags() (*types.StItem, *types.StItem, error) {
sth1, err := decodeSthStr(*first)
if err != nil {
return nil, nil, fmt.Errorf("first: decodeSthStr: %v", err)
}
sth2, err := decodeSthStr(*second)
if err != nil {
return nil, nil, fmt.Errorf("second: decodeSthStr: %v", err)
}
return sth1, sth2, nil
}
func decodeSthStr(sthStr string) (*types.StItem, error) {
serialized, err := base64.StdEncoding.DecodeString(sthStr)
if err != nil {
return nil, fmt.Errorf("DecodeString: %v", err)
}
var item types.StItem
if err = types.Unmarshal(serialized, &item); err != nil {
return nil, fmt.Errorf("Unmarshal: %v", err)
}
return &item, nil
}
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