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修复部分功能

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This commit is contained in:
kevin
2026-06-02 20:33:08 +08:00
parent b35d468396
commit 59719586a1
10 changed files with 753 additions and 426 deletions
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internal/imap_server/backend.go
+126 -102
View File
@@ -1,6 +1,7 @@
package imap_server
import (
"bufio"
"bytes"
"fmt"
"io"
@@ -15,7 +16,9 @@ import (
"github.com/emersion/go-imap"
"github.com/emersion/go-imap/backend"
"github.com/emersion/go-imap/backend/backendutil"
asgomail "github.com/emersion/go-message/mail"
"github.com/emersion/go-message/textproto"
)
// ---------- imapBackend ----------
@@ -67,7 +70,7 @@ func (u *imapUser) ListMailboxes(subscribed bool) ([]backend.Mailbox, error) {
attributes []string
}{
{"INBOX", "/", nil},
{"Sent", "/", nil},
{"Sent", "/", []string{"\\Sent"}},
{"Drafts", "/", []string{"\\Drafts"}},
{"Trash", "/", []string{"\\Trash"}},
}
@@ -87,25 +90,8 @@ func (u *imapUser) ListMailboxes(subscribed bool) ([]backend.Mailbox, error) {
// GetMailbox returns a mailbox by name.
func (u *imapUser) GetMailbox(name string) (backend.Mailbox, error) {
validNames := map[string]bool{
"INBOX": true,
"Sent": true,
"Drafts": true,
"Trash": true,
}
normalized := name
upper := strings.ToUpper(name)
if upper == "INBOX" {
normalized = "INBOX"
} else if validNames[upper] {
normalized = upper
} else {
// Try title case
normalized = strings.Title(strings.ToLower(name))
}
if !validNames[normalized] {
normalized, ok := canonicalMailboxName(name)
if !ok {
return nil, backend.ErrNoSuchMailbox
}
@@ -117,6 +103,21 @@ func (u *imapUser) GetMailbox(name string) (backend.Mailbox, error) {
}, nil
}
func canonicalMailboxName(name string) (string, bool) {
switch strings.ToUpper(strings.TrimSpace(name)) {
case "INBOX":
return "INBOX", true
case "SENT":
return "Sent", true
case "DRAFTS":
return "Drafts", true
case "TRASH":
return "Trash", true
default:
return "", false
}
}
// CreateMailbox creates a new mailbox (not supported in this version).
func (u *imapUser) CreateMailbox(name string) error {
return fmt.Errorf("mailbox creation not supported")
@@ -170,11 +171,9 @@ func (m *imapMailbox) Info() (*imap.MailboxInfo, error) {
// Status returns mailbox status information.
func (m *imapMailbox) Status(items []imap.StatusItem) (*imap.MailboxStatus, error) {
status := &imap.MailboxStatus{
Name: m.name,
Flags: []string{"\\Answered", "\\Flagged", "\\Deleted", "\\Seen", "\\Draft"},
PermanentFlags: []string{"\\Answered", "\\Flagged", "\\Deleted", "\\Seen", "\\Draft", "\\*"},
}
status := imap.NewMailboxStatus(m.name, items)
status.Flags = []string{"\\Answered", "\\Flagged", "\\Deleted", "\\Seen", "\\Draft"}
status.PermanentFlags = []string{"\\Answered", "\\Flagged", "\\Deleted", "\\Seen", "\\Draft", "\\*"}
messages, err := m.stores.Mails.ListAllByUserAndFolder(m.user.id, m.name)
if err != nil {
@@ -191,7 +190,11 @@ func (m *imapMailbox) Status(items []imap.StatusItem) (*imap.MailboxStatus, erro
}
status.Unseen = unseenCount
status.Recent = 0
status.UidNext = uint32(len(messages) + 1)
maxID, err := m.stores.Mails.MaxIDByUserAndFolder(m.user.id, m.name)
if err != nil {
return nil, err
}
status.UidNext = uint32(maxID + 1)
status.UidValidity = 1
return status, nil
@@ -258,87 +261,61 @@ func (m *imapMailbox) ListMessages(uid bool, seqset *imap.SeqSet, items []imap.F
// buildIMAPMessage constructs an imap.Message from a db.Message with the requested items.
func (m *imapMailbox) buildIMAPMessage(dbMsg *db.Message, seqNum uint32, items []imap.FetchItem) (*imap.Message, error) {
imapMsg := &imap.Message{
SeqNum: seqNum,
Uid: uint32(dbMsg.ID),
Flags: m.getMessageFlags(dbMsg),
InternalDate: dbMsg.Date,
Body: make(map[*imap.BodySectionName]imap.Literal),
}
imapMsg := imap.NewMessage(seqNum, items)
imapMsg.Uid = uint32(dbMsg.ID)
imapMsg.Flags = m.getMessageFlags(dbMsg)
imapMsg.InternalDate = dbMsg.Date
rawMsg := buildRawMessage(dbMsg)
rawMsg := messageRawData(dbMsg)
imapMsg.Size = uint32(len(rawMsg))
for _, item := range items {
switch item {
case imap.FetchUid:
// UID is already set on the struct
case imap.FetchFlags:
// Flags are already set on the struct
case imap.FetchInternalDate:
// InternalDate is already set on the struct
case imap.FetchRFC822Size:
// Size is already set on the struct
case imap.FetchUid, imap.FetchFlags, imap.FetchInternalDate, imap.FetchRFC822Size:
continue
case imap.FetchEnvelope:
imapMsg.Envelope = m.buildEnvelope(dbMsg)
case imap.FetchRFC822:
section := &imap.BodySectionName{BodyPartName: imap.BodyPartName{}}
imapMsg.Body[section] = bytes.NewReader(rawMsg)
case imap.FetchRFC822Header:
headerBytes := buildRawHeader(dbMsg)
section := &imap.BodySectionName{
BodyPartName: imap.BodyPartName{
Specifier: imap.HeaderSpecifier,
},
hdr, _, err := headerAndBody(rawMsg)
if err == nil {
imapMsg.Envelope, _ = backendutil.FetchEnvelope(hdr)
}
imapMsg.Body[section] = bytes.NewReader(headerBytes)
case imap.FetchRFC822Text:
var bodyText string
if dbMsg.TextBody != "" {
bodyText = dbMsg.TextBody
} else if dbMsg.HtmlBody != "" {
bodyText = dbMsg.HtmlBody
if imapMsg.Envelope == nil {
imapMsg.Envelope = m.buildEnvelope(dbMsg)
}
section := &imap.BodySectionName{
BodyPartName: imap.BodyPartName{
Specifier: imap.TextSpecifier,
},
case imap.FetchBody, imap.FetchBodyStructure:
hdr, body, err := headerAndBody(rawMsg)
if err == nil {
imapMsg.BodyStructure, _ = backendutil.FetchBodyStructure(hdr, body, item == imap.FetchBodyStructure)
}
imapMsg.Body[section] = bytes.NewReader([]byte(bodyText))
default:
// Handle BODY[] and BODY.PEEK[] sections
itemStr := string(item)
if strings.HasPrefix(itemStr, "BODY[]") || strings.HasPrefix(itemStr, "BODY.PEEK[]") {
section := &imap.BodySectionName{BodyPartName: imap.BodyPartName{}}
imapMsg.Body[section] = bytes.NewReader(rawMsg)
} else if strings.HasPrefix(itemStr, "BODY[HEADER") || strings.HasPrefix(itemStr, "BODY.PEEK[HEADER") {
headerBytes := buildRawHeader(dbMsg)
section := &imap.BodySectionName{
BodyPartName: imap.BodyPartName{
Specifier: imap.HeaderSpecifier,
},
}
imapMsg.Body[section] = bytes.NewReader(headerBytes)
} else if strings.HasPrefix(itemStr, "BODY[TEXT") || strings.HasPrefix(itemStr, "BODY.PEEK[TEXT") {
var bodyText string
if dbMsg.TextBody != "" {
bodyText = dbMsg.TextBody
} else if dbMsg.HtmlBody != "" {
bodyText = dbMsg.HtmlBody
}
section := &imap.BodySectionName{
BodyPartName: imap.BodyPartName{
Specifier: imap.TextSpecifier,
},
}
imapMsg.Body[section] = bytes.NewReader([]byte(bodyText))
section, err := imap.ParseBodySectionName(item)
if err != nil {
continue
}
hdr, body, err := headerAndBody(rawMsg)
if err != nil {
return nil, err
}
literal, _ := backendutil.FetchBodySection(hdr, body, section)
imapMsg.Body[section] = literal
}
}
return imapMsg, nil
}
func messageRawData(msg *db.Message) []byte {
if msg.RawData != "" {
return []byte(msg.RawData)
}
return buildRawMessage(msg)
}
func headerAndBody(raw []byte) (textproto.Header, io.Reader, error) {
body := bufio.NewReader(bytes.NewReader(raw))
hdr, err := textproto.ReadHeader(body)
return hdr, body, err
}
// getMessageFlags returns IMAP flags for a database message.
func (m *imapMailbox) getMessageFlags(dbMsg *db.Message) []string {
flags := make([]string, 0)
@@ -607,28 +584,40 @@ func (m *imapMailbox) UpdateMessagesFlags(uid bool, seqset *imap.SeqSet, op imap
continue
}
flagSet := make(map[string]bool, len(flags))
for _, flag := range flags {
flagSet[flag] = true
}
applyFlag := func(flag string, enabled bool) {
switch flag {
case "\\Seen":
if op == imap.AddFlags || op == imap.SetFlags {
_ = m.stores.Mails.MarkRead(dbMsg.ID)
} else if op == imap.RemoveFlags {
// Mark as unread — update directly
}
_ = m.stores.Mails.MarkReadState(dbMsg.ID, enabled)
case "\\Flagged":
if op == imap.AddFlags || op == imap.SetFlags {
_ = m.stores.Mails.MarkFlagged(dbMsg.ID, true)
} else if op == imap.RemoveFlags {
_ = m.stores.Mails.MarkFlagged(dbMsg.ID, false)
}
_ = m.stores.Mails.MarkFlagged(dbMsg.ID, enabled)
case "\\Deleted":
if op == imap.AddFlags || op == imap.SetFlags {
if enabled {
m.deleted[dbMsg.ID] = true
} else if op == imap.RemoveFlags {
} else {
delete(m.deleted, dbMsg.ID)
}
}
}
switch op {
case imap.SetFlags:
applyFlag("\\Seen", flagSet["\\Seen"])
applyFlag("\\Flagged", flagSet["\\Flagged"])
applyFlag("\\Deleted", flagSet["\\Deleted"])
case imap.AddFlags:
for flag := range flagSet {
applyFlag(flag, true)
}
case imap.RemoveFlags:
for flag := range flagSet {
applyFlag(flag, false)
}
}
}
return nil
@@ -636,6 +625,11 @@ func (m *imapMailbox) UpdateMessagesFlags(uid bool, seqset *imap.SeqSet, op imap
// CopyMessages copies messages to another mailbox.
func (m *imapMailbox) CopyMessages(uid bool, seqset *imap.SeqSet, dest string) error {
dest, ok := canonicalMailboxName(dest)
if !ok {
return backend.ErrNoSuchMailbox
}
dbMessages, err := m.stores.Mails.ListAllByUserAndFolder(m.user.id, m.name)
if err != nil {
return err
@@ -663,6 +657,7 @@ func (m *imapMailbox) CopyMessages(uid bool, seqset *imap.SeqSet, dest string) e
Subject: dbMsg.Subject,
TextBody: dbMsg.TextBody,
HtmlBody: dbMsg.HtmlBody,
RawData: dbMsg.RawData,
IsRead: dbMsg.IsRead,
IsFlagged: dbMsg.IsFlagged,
Date: dbMsg.Date,
@@ -675,6 +670,35 @@ func (m *imapMailbox) CopyMessages(uid bool, seqset *imap.SeqSet, dest string) e
return nil
}
// MoveMessages moves messages to another mailbox.
func (m *imapMailbox) MoveMessages(uid bool, seqset *imap.SeqSet, dest string) error {
dest, ok := canonicalMailboxName(dest)
if !ok {
return backend.ErrNoSuchMailbox
}
dbMessages, err := m.stores.Mails.ListAllByUserAndFolder(m.user.id, m.name)
if err != nil {
return err
}
for i, dbMsg := range dbMessages {
var match bool
if uid {
match = seqset.Contains(uint32(dbMsg.ID))
} else {
match = seqset.Contains(uint32(i + 1))
}
if !match {
continue
}
if err := m.stores.Mails.MoveToFolder(dbMsg.ID, dest); err != nil {
log.Printf("IMAP: failed to move message %d to %s: %v", dbMsg.ID, dest, err)
}
}
return nil
}
// Expunge permanently removes messages marked as \Deleted.
func (m *imapMailbox) Expunge() error {
if m.deleted == nil {