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verifier.go
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verifier.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package verify
import (
"bytes"
"encoding/base64"
"encoding/hex"
"errors"
"fmt"
"io/ioutil"
"os"
"regexp"
"github.com/golang/protobuf/jsonpb"
"github.com/golang/protobuf/proto"
)
func verifier(params []string, f func(*reporter, []byte) string) error {
if len(params) <= 0 {
return errors.New("error: at least one file is required")
}
rprter := &reporter{}
for i, v := range params {
rprter.Start(v)
bs := readFile(rprter, v)
if rprter.HasCurrError() {
rprter.Dump("")
continue
}
result := f(rprter, bs)
rprter.Dump(result)
if i < len(params)-1 {
fmt.Println()
}
}
if rprter.HasError() {
return errors.New("error: one or more files are malformed or invalid")
}
return nil
}
func unmarshal(r *reporter, bs []byte, i proto.Message) bool {
u := jsonpb.Unmarshaler{
AllowUnknownFields: false,
}
err := u.Unmarshal(bytes.NewBuffer(bs), i)
if err != nil {
r.Err("unable to unmarshal file: %v", err)
return false
}
return true
}
func marshal(i proto.Message) string {
m := jsonpb.Marshaler{
Indent: " ",
EmitDefaults: true,
}
buf, _ := m.MarshalToString(i)
return buf
}
func readFile(r *reporter, path string) []byte {
f, err := os.Open(path)
if err != nil {
r.Err("%v, no such file or directory", path)
return nil
}
defer f.Close()
bytes, err := ioutil.ReadAll(f)
if err != nil {
r.Err("unable to read file: %v", err)
return nil
}
return bytes
}
func isValidParty(party string) bool {
if len(party) != 64 {
return false
}
_, err := hex.DecodeString(party)
return err == nil
}
func isValidTMKey(key string) bool {
keybytes, err := base64.StdEncoding.DecodeString(key)
if err != nil {
return false
}
return len(keybytes) == 32
}
func isValidEthereumAddress(v string) bool {
re := regexp.MustCompile("^0x[0-9a-fA-F]{40}$")
return re.MatchString(v)
}