Kaiy Belist
39759db7c2
- Bridge Node Support: Added functionality to manage mail (send/receive) on remote nodes via a bridge node. Full transparent management requires a private key on the bridge, while the remote node can operate with only a public key. - End-to-End Encryption (E2EE): Integrated E2EE using age. Encryption and decryption occur strictly at the bridge level; node administrators cannot access message content. - New Addressing Schema: Transitioned from nodepub@yggmail to userpub@nodepub. - Key Adaptation: Implemented ed25519 to x25519 coordinate adaptation, allowing signing keys to be used for encryption. Changed - Address Encoding: Switched from hex16 to base32 for the address space. - Memory Optimization: Replaced direct memory allocations with streaming for mail processing to reduce RAM overhead. - Code Refactoring: Performed decomposition of the original inherited codebase to improve maintainability. Fixed - Mail Updates: Fixed the mail retrieval mechanism to ensure near-instant updates for incoming messages. Changes to be committed: modified: .gitignore modified: README.md modified: cmd/yggmail/main.go modified: go.mod modified: go.sum new file: internal/account/manager.go new file: internal/account/session.go modified: internal/imapserver/backend.go modified: internal/imapserver/imap.go modified: internal/imapserver/mailbox.go modified: internal/imapserver/notify.go modified: internal/imapserver/user.go new file: internal/notify/notify.go new file: internal/notify/remote/remote.go new file: internal/remote/client.go new file: internal/remote/handlers.go new file: internal/remote/io.go new file: internal/remote/server.go new file: internal/remote/sign.go new file: internal/remote/types/request.pb.go new file: internal/remote/types/request.proto new file: internal/remote/types/response.pb.go new file: internal/remote/types/response.proto new file: internal/shell/shell.go modified: internal/smtpsender/sender.go modified: internal/smtpserver/backend.go modified: internal/smtpserver/session_local.go modified: internal/smtpserver/session_remote.go modified: internal/smtpserver/smtp.go new file: internal/storage/filestore/filestore.go new file: internal/storage/local/storage.go new file: internal/storage/remote/mail.go new file: internal/storage/remote/mailbox.go new file: internal/storage/remote/queue.go new file: internal/storage/remote/storage.go new file: internal/storage/remote/watch.go modified: internal/storage/sqlite3/sqlite3.go new file: internal/storage/sqlite3/table_accounts.go modified: internal/storage/sqlite3/table_mailboxes.go modified: internal/storage/sqlite3/table_mails.go modified: internal/storage/sqlite3/table_queue.go modified: internal/storage/storage.go modified: internal/storage/types/types.go modified: internal/utils/address.go new file: internal/utils/age/age.go new file: internal/utils/age/bech32/bech32.go new file: internal/utils/crypt.go new file: internal/utils/e2ee/crypt.go new file: internal/utils/e2ee/e2ee_test.go new file: internal/utils/e2ee/msg.go new file: internal/utils/x25519.go modified: internal/welcome/welcome.go
81 lines
1.6 KiB
Go
81 lines
1.6 KiB
Go
/*
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* Copyright (c) 2026 Kaiy Ragur
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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package e2ee
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import (
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"crypto/ed25519"
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"crypto/sha512"
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"io"
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"os"
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)
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type Encryptor func(io.Writer, ...ed25519.PublicKey) (io.WriteCloser, error)
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type Decryptor func(io.Reader) (io.Reader, error)
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type Verifier func([]byte, []byte) error
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type Signer func([]byte) ([]byte, error)
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func EncryptPack(input io.ReadSeeker, rcpt []ed25519.PublicKey, signer Signer, enc Encryptor) (io.Reader, error) {
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input.Seek(0, io.SeekStart)
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h := sha512.New()
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if _, err := io.Copy(h, input); err != nil {
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return nil, err
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}
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sig, err := signer(h.Sum(nil))
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if err != nil {
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return nil, err
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}
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pr, pw := io.Pipe()
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go func() {
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input.Seek(0, io.SeekStart)
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ew, _ := enc(pw, rcpt...)
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ew.Write(sig)
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io.Copy(ew, input)
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ew.Close()
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pw.Close()
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}()
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return pr, nil
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}
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func DecryptPack(input io.Reader, dec Decryptor, verifier Verifier) (io.ReadCloser, error) {
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dr, err := dec(input)
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if err != nil {
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return nil, err
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}
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sig := make([]byte, 64)
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if _, err := io.ReadFull(dr, sig); err != nil {
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return nil, err
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}
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tmp, _ := os.CreateTemp("", "ygg-mail-*")
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h := sha512.New()
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io.Copy(io.MultiWriter(tmp, h), dr)
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if err := verifier(h.Sum(nil), sig); err != nil {
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tmp.Close()
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os.Remove(tmp.Name())
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return nil, err
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}
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tmp.Seek(0, io.SeekStart)
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return &tempFileCloser{File: tmp}, nil
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}
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type tempFileCloser struct {
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*os.File
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}
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func (t *tempFileCloser) Close() error {
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t.File.Close()
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return os.Remove(t.Name())
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}
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