mirror of
https://github.com/letic/terraform-provider-google.git
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961c878e0d
Switch to using Go modules. This migrates our vendor.json to use Go 1.11's modules system, and replaces the vendor folder with the output of go mod vendor. The vendored code should remain basically the same; I believe some tree shaking of packages and support scripts/licenses/READMEs/etc. happened. This also fixes Travis and our Makefile to no longer use govendor.
92 lines
2.5 KiB
Go
92 lines
2.5 KiB
Go
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package packet
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import (
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"bytes"
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"image"
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"image/jpeg"
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"io"
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"io/ioutil"
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)
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const UserAttrImageSubpacket = 1
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// UserAttribute is capable of storing other types of data about a user
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// beyond name, email and a text comment. In practice, user attributes are typically used
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// to store a signed thumbnail photo JPEG image of the user.
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// See RFC 4880, section 5.12.
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type UserAttribute struct {
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Contents []*OpaqueSubpacket
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}
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// NewUserAttributePhoto creates a user attribute packet
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// containing the given images.
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func NewUserAttributePhoto(photos ...image.Image) (uat *UserAttribute, err error) {
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uat = new(UserAttribute)
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for _, photo := range photos {
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var buf bytes.Buffer
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// RFC 4880, Section 5.12.1.
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data := []byte{
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0x10, 0x00, // Little-endian image header length (16 bytes)
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0x01, // Image header version 1
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0x01, // JPEG
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0, 0, 0, 0, // 12 reserved octets, must be all zero.
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0, 0, 0, 0,
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0, 0, 0, 0}
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if _, err = buf.Write(data); err != nil {
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return
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}
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if err = jpeg.Encode(&buf, photo, nil); err != nil {
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return
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}
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uat.Contents = append(uat.Contents, &OpaqueSubpacket{
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SubType: UserAttrImageSubpacket,
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Contents: buf.Bytes()})
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}
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return
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}
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// NewUserAttribute creates a new user attribute packet containing the given subpackets.
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func NewUserAttribute(contents ...*OpaqueSubpacket) *UserAttribute {
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return &UserAttribute{Contents: contents}
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}
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func (uat *UserAttribute) parse(r io.Reader) (err error) {
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// RFC 4880, section 5.13
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b, err := ioutil.ReadAll(r)
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if err != nil {
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return
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}
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uat.Contents, err = OpaqueSubpackets(b)
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return
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}
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// Serialize marshals the user attribute to w in the form of an OpenPGP packet, including
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// header.
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func (uat *UserAttribute) Serialize(w io.Writer) (err error) {
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var buf bytes.Buffer
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for _, sp := range uat.Contents {
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sp.Serialize(&buf)
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}
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if err = serializeHeader(w, packetTypeUserAttribute, buf.Len()); err != nil {
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return err
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}
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_, err = w.Write(buf.Bytes())
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return
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}
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// ImageData returns zero or more byte slices, each containing
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// JPEG File Interchange Format (JFIF), for each photo in the
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// user attribute packet.
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func (uat *UserAttribute) ImageData() (imageData [][]byte) {
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for _, sp := range uat.Contents {
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if sp.SubType == UserAttrImageSubpacket && len(sp.Contents) > 16 {
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imageData = append(imageData, sp.Contents[16:])
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}
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}
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return
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}
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