mirror of
https://github.com/gravitational/teleport.git
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84 lines
2.7 KiB
Go
84 lines
2.7 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package aws
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import (
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"bytes"
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"encoding/xml"
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"github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil"
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"github.com/gravitational/trace"
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)
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// IsXMLOfLocalName returns true if the root XML has the provided (local) name.
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func IsXMLOfLocalName(data []byte, wantLocalName string) bool {
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var name xml.Name
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if err := xml.Unmarshal(data, &name); err == nil {
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return wantLocalName == name.Local
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}
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return false
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}
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// UnmarshalXMLChildNode decodes the XML-encoded data and stores the child node
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// with the specified name to v, where v is a pointer to an AWS SDK v1 struct.
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func UnmarshalXMLChildNode(v interface{}, data []byte, childName string) error {
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return trace.Wrap(xmlutil.UnmarshalXML(v, xml.NewDecoder(bytes.NewReader(data)), childName))
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}
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// MarshalXML marshals the provided root name and a map of children in XML with
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// default indent (prefix "", indent " ").
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func MarshalXML(rootName xml.Name, children map[string]any) ([]byte, error) {
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var buf bytes.Buffer
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encoder := xml.NewEncoder(&buf)
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encoder.Indent("", " ")
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err := encodeXMLNode(encoder, rootName, func() error {
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for childName, childValue := range children {
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if err := encodeXMLNodeAWSSDKV1(encoder, childName, childValue); err != nil {
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return trace.Wrap(err)
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}
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}
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return nil
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})
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if err != nil {
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return nil, trace.Wrap(err)
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}
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if err := trace.Wrap(encoder.Flush()); err != nil {
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return nil, trace.Wrap(err)
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}
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return buf.Bytes(), nil
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}
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func encodeXMLNode(encoder *xml.Encoder, name xml.Name, encodeChildren func() error) error {
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startElement := xml.StartElement{Name: name}
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if err := encoder.EncodeToken(startElement); err != nil {
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return trace.Wrap(err)
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}
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if err := encodeChildren(); err != nil {
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return trace.Wrap(err)
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}
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return trace.Wrap(encoder.EncodeToken(startElement.End()))
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}
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func encodeXMLNodeAWSSDKV1(encoder *xml.Encoder, name string, v any) error {
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return encodeXMLNode(encoder, xml.Name{Local: name}, func() error {
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return trace.Wrap(xmlutil.BuildXML(v, encoder))
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})
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}
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