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aerc/lib/emlview.go

81 lines
1.7 KiB
Go

package lib
import (
"bytes"
"io"
"github.com/ProtonMail/go-crypto/openpgp"
_ "github.com/emersion/go-message/charset"
"git.sr.ht/~rjarry/aerc/lib/crypto"
"git.sr.ht/~rjarry/aerc/lib/rfc822"
"git.sr.ht/~rjarry/aerc/models"
)
// EmlMessage implements the RawMessage interface
type EmlMessage []byte
func (fm *EmlMessage) NewReader() (io.ReadCloser, error) {
return io.NopCloser(bytes.NewReader(*fm)), nil
}
func (fm *EmlMessage) UID() models.UID {
return ""
}
func (fm *EmlMessage) Labels() ([]string, error) {
return nil, nil
}
func (fm *EmlMessage) ModelFlags() (models.Flags, error) {
return models.SeenFlag, nil
}
// NewEmlMessageView provides a MessageView for a full message that is not
// stored in a message store
func NewEmlMessageView(full []byte, pgp crypto.Provider,
decryptKeys openpgp.PromptFunction, cb func(MessageView, error),
) {
eml := EmlMessage(full)
messageInfo, err := rfc822.MessageInfo(&eml)
if err != nil {
cb(nil, err)
return
}
msv := &MessageStoreView{
messageInfo: messageInfo,
messageStore: nil,
message: full,
details: nil,
bodyStructure: nil,
setSeen: false,
}
if usePGP(messageInfo.BodyStructure) {
reader := rfc822.NewCRLFReader(bytes.NewReader(full))
md, err := pgp.Decrypt(reader, decryptKeys)
if err != nil {
cb(nil, err)
return
}
msv.details = md
msv.message, err = io.ReadAll(md.Body)
if err != nil {
cb(nil, err)
return
}
}
entity, err := rfc822.ReadMessage(bytes.NewBuffer(msv.message))
if err != nil {
cb(nil, err)
return
}
bs, err := rfc822.ParseEntityStructure(entity)
if err != nil {
cb(nil, err)
return
}
msv.bodyStructure = bs
cb(msv, nil)
}