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utils.go
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/
utils.go
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/*
* Copyright (c) 2019 ChainFront LLC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package stellar
import (
"fmt"
"github.com/ethereum/go-ethereum/common/math"
"github.com/hashicorp/vault/logical"
"github.com/hashicorp/vault/logical/framework"
"github.com/stellar/go/clients/horizon"
"github.com/stellar/go/support/errors"
"math/big"
"regexp"
"sort"
)
func contains(stringSlice []string, searchString string) bool {
for _, value := range stringSlice {
if value == searchString {
return true
}
}
return false
}
// validNumber returns a valid positive integer
func validNumber(input string) *big.Int {
if input == "" {
return big.NewInt(0)
}
matched, err := regexp.MatchString("([0-9])", input)
if !matched || err != nil {
return nil
}
amount := math.MustParseBig256(input)
return amount.Abs(amount)
}
// errorString parses the horizon error out of err.
func errorString(err error, showStackTrace ...bool) string {
var errorString string
herr, isHorizonError := errors.Cause(err).(*horizon.Error)
if isHorizonError {
errorString += fmt.Sprintf("%v: %v", herr.Problem.Status, herr.Problem.Title)
resultCodes, err := herr.ResultCodes()
if err == nil {
errorString += fmt.Sprintf(" (%v)", resultCodes)
}
} else {
errorString = fmt.Sprintf("%v", err)
}
if len(showStackTrace) > 0 {
if isHorizonError {
errorString += fmt.Sprintf("\nDetail: %s\nType: %s\n", herr.Problem.Detail, herr.Problem.Type)
}
errorString += fmt.Sprintf("\nStack trace:\n%+v\n", err)
}
return errorString
}
// validateFields verifies that no bad arguments were given to the request.
func validateFields(req *logical.Request, data *framework.FieldData) error {
var unknownFields []string
for k := range req.Data {
if _, ok := data.Schema[k]; !ok {
unknownFields = append(unknownFields, k)
}
}
if len(unknownFields) > 0 {
// Sort since this is a human error
sort.Strings(unknownFields)
return fmt.Errorf("unknown fields: %q", unknownFields)
}
return nil
}
// errMissingField returns a logical response error that prints a consistent
// error message for when a required field is missing.
func errMissingField(field string) *logical.Response {
return logical.ErrorResponse(fmt.Sprintf("Missing required field '%s'", field))
}