57699b1fa6
This commit adds gpg system integration. This is done through two new packages: gpgbin, which handles the system calls and parsing; and gpg which is mostly a copy of emersion/go-pgpmail with modifications to interface with package gpgbin. gpg includes tests for many cases, and by it's nature also tests package gpgbin. I separated these in case an external dependency is ever used for the gpg sys-calls/parsing (IE we mirror how go-pgpmail+openpgp currently are dependencies) Two new config options are introduced: * pgp-provider. If it is not explicitly set to "gpg", aerc will default to it's internal pgp provider * pgp-key-id: (Optionally) specify a key by short or long keyId Signed-off-by: Tim Culverhouse <tim@timculverhouse.com> Acked-by: Koni Marti <koni.marti@gmail.com> Acked-by: Robin Jarry <robin@jarry.cc>
62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package gpg
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import (
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"bytes"
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"io"
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"log"
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"os/exec"
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"git.sr.ht/~rjarry/aerc/lib/crypto/gpg/gpgbin"
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"git.sr.ht/~rjarry/aerc/models"
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"github.com/ProtonMail/go-crypto/openpgp"
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"github.com/emersion/go-message/mail"
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)
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// Mail satisfies the PGPProvider interface in aerc
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type Mail struct {
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logger *log.Logger
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}
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func (m *Mail) Init(l *log.Logger) error {
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m.logger = l
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_, err := exec.LookPath("gpg")
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return err
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}
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func (m *Mail) Decrypt(r io.Reader, decryptKeys openpgp.PromptFunction) (*models.MessageDetails, error) {
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gpgReader, err := Read(r)
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if err != nil {
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return nil, err
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}
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md := gpgReader.MessageDetails
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md.SignatureValidity = models.Valid
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if md.SignatureError != "" {
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md.SignatureValidity = handleSignatureError(md.SignatureError)
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}
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return md, nil
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}
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func (m *Mail) ImportKeys(r io.Reader) error {
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return gpgbin.Import(r)
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}
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func (m *Mail) Encrypt(buf *bytes.Buffer, rcpts []string, signer string, decryptKeys openpgp.PromptFunction, header *mail.Header) (io.WriteCloser, error) {
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return Encrypt(buf, header.Header.Header, rcpts, signer)
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}
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func (m *Mail) Sign(buf *bytes.Buffer, signer string, decryptKeys openpgp.PromptFunction, header *mail.Header) (io.WriteCloser, error) {
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return Sign(buf, header.Header.Header, signer)
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}
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func (m *Mail) Close() {}
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func handleSignatureError(e string) models.SignatureValidity {
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if e == "gpg: missing public key" {
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return models.UnknownEntity
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}
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if e == "gpg: header hash does not match actual sig hash" {
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return models.MicalgMismatch
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}
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return models.UnknownValidity
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}
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