compose: refactor attachment handling
Refactor the attachment handling process in the composer. The composer can currently only handle attachments that are stored as files (or pgp keys). This patch removes this limitation so that any message part can be handled as an attachment. With this we can treat files, pgp keys and message parts on an equal footing and it will enable us also to easily forward attachments. Signed-off-by: Koni Marti <koni.marti@gmail.com> Tested-by: Tim Culverhouse <tim@timculverhouse.com>
This commit is contained in:
parent
ccd76e6494
commit
9d90b70b4e
3 changed files with 221 additions and 152 deletions
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@ -27,6 +27,5 @@ func (AttachKey) Execute(aerc *widgets.Aerc, args []string) error {
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composer, _ := aerc.SelectedTab().(*widgets.Composer)
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composer.SetAttachKey(!composer.AttachKey())
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return nil
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return composer.SetAttachKey(!composer.AttachKey())
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}
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136
lib/attachment.go
Normal file
136
lib/attachment.go
Normal file
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@ -0,0 +1,136 @@
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package lib
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import (
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"bufio"
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"io"
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"mime"
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"net/http"
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"os"
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"path/filepath"
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"github.com/emersion/go-message/mail"
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"github.com/pkg/errors"
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)
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type Part struct {
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MimeType string
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Params map[string]string
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Body io.Reader
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}
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func NewPart(mimetype string, params map[string]string, body io.Reader) *Part {
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return &Part{
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MimeType: mimetype,
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Params: params,
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Body: body,
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}
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}
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type Attachment interface {
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Name() string
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WriteTo(w *mail.Writer) error
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}
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type FileAttachment struct {
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path string
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}
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func NewFileAttachment(path string) *FileAttachment {
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return &FileAttachment{
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path,
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}
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}
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func (fa *FileAttachment) Name() string {
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return fa.path
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}
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func (fa *FileAttachment) WriteTo(w *mail.Writer) error {
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f, err := os.Open(fa.path)
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if err != nil {
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return errors.Wrap(err, "os.Open")
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}
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defer f.Close()
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reader := bufio.NewReader(f)
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// if we have an extension, prefer that instead of trying to sniff the header.
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// That's generally more accurate than sniffing as lots of things are zip files
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// under the hood, e.g. most office file types
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ext := filepath.Ext(fa.path)
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var mimeString string
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if mimeString = mime.TypeByExtension(ext); mimeString != "" {
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// found it in the DB
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} else {
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// Sniff the mime type instead
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// http.DetectContentType only cares about the first 512 bytes
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head, err := reader.Peek(512)
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if err != nil && err != io.EOF {
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return errors.Wrap(err, "Peek")
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}
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mimeString = http.DetectContentType(head)
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}
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// mimeString can contain type and params (like text encoding),
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// so we need to break them apart before passing them to the headers
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mimeType, params, err := mime.ParseMediaType(mimeString)
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if err != nil {
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return errors.Wrap(err, "ParseMediaType")
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}
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filename := filepath.Base(fa.path)
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params["name"] = filename
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// set header fields
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ah := mail.AttachmentHeader{}
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ah.SetContentType(mimeType, params)
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// setting the filename auto sets the content disposition
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ah.SetFilename(filename)
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aw, err := w.CreateAttachment(ah)
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if err != nil {
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return errors.Wrap(err, "CreateAttachment")
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}
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defer aw.Close()
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if _, err := reader.WriteTo(aw); err != nil {
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return errors.Wrap(err, "reader.WriteTo")
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}
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return nil
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}
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type PartAttachment struct {
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part *Part
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name string
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}
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func NewPartAttachment(part *Part, name string) *PartAttachment {
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return &PartAttachment{
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part,
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name,
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}
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}
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func (pa *PartAttachment) Name() string {
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return pa.name
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}
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func (pa *PartAttachment) WriteTo(w *mail.Writer) error {
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// set header fields
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ah := mail.AttachmentHeader{}
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ah.SetContentType(pa.part.MimeType, pa.part.Params)
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// setting the filename auto sets the content disposition
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ah.SetFilename(pa.Name())
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aw, err := w.CreateAttachment(ah)
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if err != nil {
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return errors.Wrap(err, "CreateAttachment")
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}
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defer aw.Close()
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if _, err := io.Copy(aw, pa.part.Body); err != nil {
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return errors.Wrap(err, "io.Copy")
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}
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return nil
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}
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@ -1,17 +1,13 @@
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package widgets
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import (
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"bufio"
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"bytes"
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"fmt"
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"io"
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"io/ioutil"
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"mime"
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"net/http"
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"net/textproto"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"time"
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@ -23,6 +19,7 @@ import (
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"git.sr.ht/~rjarry/aerc/completer"
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"git.sr.ht/~rjarry/aerc/config"
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"git.sr.ht/~rjarry/aerc/lib"
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"git.sr.ht/~rjarry/aerc/lib/format"
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"git.sr.ht/~rjarry/aerc/lib/templates"
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"git.sr.ht/~rjarry/aerc/lib/ui"
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@ -30,12 +27,6 @@ import (
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"git.sr.ht/~rjarry/aerc/worker/types"
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)
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type Part struct {
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MimeType string
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Params map[string]string
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Body io.Reader
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}
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type Composer struct {
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editors map[string]*headerEditor // indexes in lower case (from / cc / bcc)
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header *mail.Header
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@ -46,7 +37,7 @@ type Composer struct {
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acct *AccountView
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aerc *Aerc
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attachments []string
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attachments []lib.Attachment
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editor *Terminal
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email *os.File
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grid *ui.Grid
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@ -68,7 +59,7 @@ type Composer struct {
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width int
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textParts []*Part
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textParts []*lib.Part
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}
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func NewComposer(aerc *Aerc, acct *AccountView, conf *config.AercConfig,
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@ -193,7 +184,58 @@ func (c *Composer) Sent() bool {
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}
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func (c *Composer) SetAttachKey(attach bool) error {
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if !attach {
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name := c.crypto.signKey + ".asc"
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found := false
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for _, a := range c.attachments {
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if a.Name() == name {
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found = true
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}
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}
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if found {
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c.DeleteAttachment(name)
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} else {
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attach = !attach
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}
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}
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if attach {
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var s string
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var err error
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if c.crypto.signKey == "" {
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if c.acctConfig.PgpKeyId != "" {
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s = c.acctConfig.PgpKeyId
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} else {
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s, err = getSenderEmail(c)
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if err != nil {
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return err
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}
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}
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c.crypto.signKey, err = c.aerc.Crypto.GetSignerKeyId(s)
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if err != nil {
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return err
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}
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}
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r, err := c.aerc.Crypto.ExportKey(c.crypto.signKey)
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if err != nil {
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return err
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}
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c.attachments = append(c.attachments,
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lib.NewPartAttachment(
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lib.NewPart(
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"application/pgp-keys",
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map[string]string{"charset": "UTF-8"},
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r,
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),
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c.crypto.signKey+".asc",
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),
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)
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}
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c.attachKey = attach
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c.resetReview()
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return nil
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}
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@ -309,7 +351,8 @@ func (c *Composer) AppendPart(mimetype string, params map[string]string, body io
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if !strings.HasPrefix(mimetype, "text") {
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return fmt.Errorf("can only append text mimetypes")
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}
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c.textParts = append(c.textParts, &Part{MimeType: mimetype, Params: params, Body: body})
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c.textParts = append(c.textParts, lib.NewPart(mimetype, params, body))
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c.resetReview()
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return nil
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}
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@ -611,36 +654,30 @@ func (c *Composer) WriteMessage(header *mail.Header, writer io.Writer) error {
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}
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func writeMsgImpl(c *Composer, header *mail.Header, writer io.Writer) error {
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if len(c.attachments) == 0 && !c.attachKey && len(c.textParts) == 0 {
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// no attachements
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if len(c.attachments) == 0 && len(c.textParts) == 0 {
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// no attachments
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return writeInlineBody(header, c.email, writer)
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} else {
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// with attachements
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// with attachments
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w, err := mail.CreateWriter(writer, *header)
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if err != nil {
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return errors.Wrap(err, "CreateWriter")
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}
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parts := []*Part{
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&Part{
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MimeType: "text/plain",
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Params: map[string]string{"Charset": "UTF-8"},
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Body: c.email,
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},
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parts := []*lib.Part{
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lib.NewPart(
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"text/plain",
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map[string]string{"Charset": "UTF-8"},
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c.email,
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),
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}
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if err := writeMultipartBody(append(parts, c.textParts...), w); err != nil {
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return errors.Wrap(err, "writeMultipartBody")
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}
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for _, a := range c.attachments {
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if err := writeAttachment(a, w); err != nil {
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if err := a.WriteTo(w); err != nil {
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return errors.Wrap(err, "writeAttachment")
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}
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}
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if c.attachKey {
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err := c.writeKeyAttachment(w)
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if err != nil {
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return err
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}
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}
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w.Close()
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}
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return nil
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@ -660,7 +697,7 @@ func writeInlineBody(header *mail.Header, body io.Reader, writer io.Writer) erro
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}
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// write the message body to the multipart message
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func writeMultipartBody(parts []*Part, w *mail.Writer) error {
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func writeMultipartBody(parts []*lib.Part, w *mail.Writer) error {
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bi, err := w.CreateInline()
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if err != nil {
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return errors.Wrap(err, "CreateInline")
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@ -683,73 +720,29 @@ func writeMultipartBody(parts []*Part, w *mail.Writer) error {
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return nil
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}
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// write the attachment specified by path to the message
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func writeAttachment(path string, writer *mail.Writer) error {
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f, err := os.Open(path)
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if err != nil {
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return errors.Wrap(err, "os.Open")
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}
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defer f.Close()
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reader := bufio.NewReader(f)
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// if we have an extension, prefer that instead of trying to sniff the header.
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// That's generally more accurate than sniffing as lots of things are zip files
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// under the hood, e.g. most office file types
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ext := filepath.Ext(path)
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var mimeString string
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if mimeString = mime.TypeByExtension(ext); mimeString != "" {
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// found it in the DB
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} else {
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// Sniff the mime type instead
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// http.DetectContentType only cares about the first 512 bytes
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head, err := reader.Peek(512)
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if err != nil && err != io.EOF {
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return errors.Wrap(err, "Peek")
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}
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mimeString = http.DetectContentType(head)
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}
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// mimeString can contain type and params (like text encoding),
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// so we need to break them apart before passing them to the headers
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mimeType, params, err := mime.ParseMediaType(mimeString)
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if err != nil {
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return errors.Wrap(err, "ParseMediaType")
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}
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filename := filepath.Base(path)
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params["name"] = filename
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// set header fields
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ah := mail.AttachmentHeader{}
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ah.SetContentType(mimeType, params)
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// setting the filename auto sets the content disposition
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ah.SetFilename(filename)
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aw, err := writer.CreateAttachment(ah)
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if err != nil {
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return errors.Wrap(err, "CreateAttachment")
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}
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defer aw.Close()
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if _, err := reader.WriteTo(aw); err != nil {
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return errors.Wrap(err, "reader.WriteTo")
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}
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return nil
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}
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func (c *Composer) GetAttachments() []string {
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return c.attachments
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var names []string
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for _, a := range c.attachments {
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names = append(names, a.Name())
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}
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return names
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}
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func (c *Composer) AddAttachment(path string) {
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c.attachments = append(c.attachments, path)
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c.attachments = append(c.attachments, lib.NewFileAttachment(path))
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c.resetReview()
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}
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func (c *Composer) DeleteAttachment(path string) error {
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func (c *Composer) AddPartAttachment(name string, mimetype string, params map[string]string, body io.Reader) {
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c.attachments = append(c.attachments, lib.NewPartAttachment(
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lib.NewPart(mimetype, params, body), name,
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))
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c.resetReview()
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}
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func (c *Composer) DeleteAttachment(name string) error {
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for i, a := range c.attachments {
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if a == path {
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if a.Name() == name {
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c.attachments = append(c.attachments[:i], c.attachments[i+1:]...)
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c.resetReview()
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return nil
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@ -1109,9 +1102,6 @@ func newReviewMessage(composer *Composer, err error) *reviewMessage {
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for i := 0; i < len(composer.attachments)-1; i++ {
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spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
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}
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if composer.attachKey {
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spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
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}
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if len(composer.textParts) > 0 {
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spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
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spec = append(spec, ui.GridSpec{Strategy: ui.SIZE_EXACT, Size: ui.Const(1)})
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@ -1144,18 +1134,13 @@ func newReviewMessage(composer *Composer, err error) *reviewMessage {
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grid.AddChild(ui.NewText("Attachments:",
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uiConfig.GetStyle(config.STYLE_TITLE))).At(i, 0)
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i += 1
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if composer.attachKey {
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grid.AddChild(ui.NewText(composer.crypto.signKey+".asc",
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uiConfig.GetStyle(config.STYLE_DEFAULT))).At(i, 0)
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i += 1
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}
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if len(composer.attachments) == 0 && !composer.attachKey {
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if len(composer.attachments) == 0 {
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grid.AddChild(ui.NewText("(none)",
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uiConfig.GetStyle(config.STYLE_DEFAULT))).At(i, 0)
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i += 1
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} else {
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for _, a := range composer.attachments {
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grid.AddChild(ui.NewText(a, uiConfig.GetStyle(config.STYLE_DEFAULT))).
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grid.AddChild(ui.NewText(a.Name(), uiConfig.GetStyle(config.STYLE_DEFAULT))).
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At(i, 0)
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i += 1
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}
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@ -1262,54 +1247,3 @@ func (c *Composer) checkEncryptionKeys(_ string) bool {
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c.updateCrypto()
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return true
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}
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func (c *Composer) writeKeyAttachment(w *mail.Writer) error {
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// Verify key exists and get keyid
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cp := c.aerc.Crypto
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var (
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err error
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s string
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)
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if c.crypto.signKey == "" {
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if c.acctConfig.PgpKeyId != "" {
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s = c.acctConfig.PgpKeyId
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} else {
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s, err = getSenderEmail(c)
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if err != nil {
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return err
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}
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}
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c.crypto.signKey, err = cp.GetSignerKeyId(s)
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if err != nil {
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return err
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}
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}
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// Get the key in armor format
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r, err := cp.ExportKey(c.crypto.signKey)
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if err != nil {
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c.aerc.PushError(err.Error())
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return err
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}
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filename := c.crypto.signKey + ".asc"
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mimeType := "application/pgp-keys"
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params := map[string]string{
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"charset": "UTF-8",
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"name": filename,
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}
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// set header fields
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ah := mail.AttachmentHeader{}
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ah.SetContentType(mimeType, params)
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// setting the filename auto sets the content disposition
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ah.SetFilename(filename)
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aw, err := w.CreateAttachment(ah)
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||||
if err != nil {
|
||||
return errors.Wrap(err, "CreateKeyAttachment")
|
||||
}
|
||||
defer aw.Close()
|
||||
|
||||
if _, err := io.Copy(aw, r); err != nil {
|
||||
return errors.Wrap(err, "io.Copy")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue