imapclient

package
v3.0.1 Latest Latest
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 Go to latest Published: Mar 19, 2024 License: MIT Imports: 22 Imported by: 0

Documentation

Overview

Package imapclient implements an IMAP client.

Charset decoding

By default, only basic charset decoding is performed. For non-UTF-8 decoding of message subjects and e-mail address names, users can set Options.WordDecoder. For instance, to use go-message's collection of charsets: 

import (
	"mime"

	"github.com/emersion/go-message/charset"
)

options := &imapclient.Options{
	WordDecoder: &mime.WordDecoder{CharsetReader: charset.Reader},
}
client, err := imapclient.DialTLS("imap.example.org:993", options)

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type AppendCommand 

type AppendCommand struct {
	// contains filtered or unexported fields
}

AppendCommand is an APPEND command.

Callers must write the message contents, then call Close.

func (*AppendCommand) Close 

func (cmd *AppendCommand) Close() error

func (*AppendCommand) Wait 

func (cmd *AppendCommand) Wait() (*imap.AppendData, error)

func (*AppendCommand) Write 

func (cmd *AppendCommand) Write(b []byte) (int, error)

type CapabilityCommand 

type CapabilityCommand struct {
	// contains filtered or unexported fields
}

CapabilityCommand is a CAPABILITY command.

func (*CapabilityCommand) Wait 

func (cmd *CapabilityCommand) Wait() (imap.CapSet, error)

type Client 

type Client struct {
	// contains filtered or unexported fields
}

Client is an IMAP client.

IMAP commands are exposed as methods. These methods will block until the command has been sent to the server, but won't block until the server sends a response. They return a command struct which can be used to wait for the server response. This can be used to execute multiple commands concurrently, however care must be taken to avoid ambiguities. See RFC 9051 section 5.5.

A client can be safely used from multiple goroutines, however this doesn't guarantee any command ordering and is subject to the same caveats as command pipelining (see above). Additionally, some commands (e.g. StartTLS, Authenticate, Idle) block the client during their execution.

Example 
c, err := imapclient.DialTLS("mail.example.org:993", nil)
if err != nil {
	log.Fatalf("failed to dial IMAP server: %v", err)
}
defer c.Close()

if err := c.Login("root", "asdf").Wait(); err != nil {
	log.Fatalf("failed to login: %v", err)
}

mailboxes, err := c.List("", "%", nil).Collect()
if err != nil {
	log.Fatalf("failed to list mailboxes: %v", err)
}
log.Printf("Found %v mailboxes", len(mailboxes))
for _, mbox := range mailboxes {
	log.Printf(" - %v", mbox.Mailbox)
}

selectedMbox, err := c.Select("INBOX", nil).Wait()
if err != nil {
	log.Fatalf("failed to select INBOX: %v", err)
}
log.Printf("INBOX contains %v messages", selectedMbox.NumMessages)

if selectedMbox.NumMessages > 0 {
	seqSet := imap.SeqSetNum(1)
	fetchOptions := &imap.FetchOptions{Envelope: true}
	messages, err := c.Fetch(seqSet, fetchOptions).Collect()
	if err != nil {
		log.Fatalf("failed to fetch first message in INBOX: %v", err)
	}
	log.Printf("subject of first message in INBOX: %v", messages[0].Envelope.Subject)
}

if err := c.Logout().Wait(); err != nil {
	log.Fatalf("failed to logout: %v", err)
}

Output:
Example (Pipelining) 
var c *imapclient.Client

uid := imap.UID(42)
fetchOptions := &imap.FetchOptions{Envelope: true}

// Login, select and fetch a message in a single roundtrip
loginCmd := c.Login("root", "root")
selectCmd := c.Select("INBOX", nil)
fetchCmd := c.Fetch(imap.UIDSetNum(uid), fetchOptions)

if err := loginCmd.Wait(); err != nil {
	log.Fatalf("failed to login: %v", err)
}
if _, err := selectCmd.Wait(); err != nil {
	log.Fatalf("failed to select INBOX: %v", err)
}
if messages, err := fetchCmd.Collect(); err != nil {
	log.Fatalf("failed to fetch message: %v", err)
} else {
	log.Printf("Subject: %v", messages[0].Envelope.Subject)
}

Output:

func DialStartTLS 

func DialStartTLS(address string, options *Options) (*Client, error)

DialStartTLS connects to an IMAP server with STARTTLS.

func DialTLS 

func DialTLS(address string, options *Options) (*Client, error)

DialTLS connects to an IMAP server with implicit TLS.

func New 

func New(conn net.Conn, options *Options) *Client

New creates a new IMAP client.

This function doesn't perform I/O.

A nil options pointer is equivalent to a zero options value.

func NewStartTLS 

func NewStartTLS(conn net.Conn, options *Options) (*Client, error)

NewStartTLS creates a new IMAP client with STARTTLS.

A nil options pointer is equivalent to a zero options value.

func (*Client) Append 

func (c *Client) Append(mailbox string, size int64, options *imap.AppendOptions) *AppendCommand

Append sends an APPEND command.

The caller must call AppendCommand.Close.

The options are optional.

Example 
package main

import (
	"log"

	"github.com/emersion/go-imap/v2/imapclient"
)

func main() {
	var c *imapclient.Client

	buf := []byte("From: <root@nsa.gov>\r\n\r\nHi <3")
	size := int64(len(buf))
	appendCmd := c.Append("INBOX", size, nil)
	if _, err := appendCmd.Write(buf); err != nil {
		log.Fatalf("failed to write message: %v", err)
	}
	if err := appendCmd.Close(); err != nil {
		log.Fatalf("failed to close message: %v", err)
	}
	if _, err := appendCmd.Wait(); err != nil {
		log.Fatalf("APPEND command failed: %v", err)
	}
}

Output:

func (*Client) Authenticate 

func (c *Client) Authenticate(saslClient sasl.Client) error

Authenticate sends an AUTHENTICATE command.

Unlike other commands, this method blocks until the SASL exchange completes.

Example (Oauth) 
var (
	c        *imapclient.Client
	username string
	token    string
)

if !c.Caps().Has(imap.AuthCap(sasl.OAuthBearer)) {
	log.Fatal("OAUTHBEARER not supported by the server")
}

saslClient := sasl.NewOAuthBearerClient(&sasl.OAuthBearerOptions{
	Username: username,
	Token:    token,
})
if err := c.Authenticate(saslClient); err != nil {
	log.Fatalf("authentication failed: %v", err)
}

Output:

func (*Client) Capability 

func (c *Client) Capability() *CapabilityCommand

Capability sends a CAPABILITY command.

func (*Client) Caps 

func (c *Client) Caps() imap.CapSet

Caps returns the capabilities advertised by the server.

When the server hasn't sent the capability list, this method will request it and block until it's received. If the capabilities cannot be fetched, nil is returned.

func (*Client) Close 

func (c *Client) Close() error

Close immediately closes the connection.

func (*Client) Copy 

func (c *Client) Copy(numSet imap.NumSet, mailbox string) *CopyCommand

Copy sends a COPY command.

func (*Client) Create 

func (c *Client) Create(mailbox string, options *imap.CreateOptions) *Command

Create sends a CREATE command.

A nil options pointer is equivalent to a zero options value.

func (*Client) Delete 

func (c *Client) Delete(mailbox string) *Command

Delete sends a DELETE command.

func (*Client) Enable 

func (c *Client) Enable(caps ...imap.Cap) *EnableCommand

Enable sends an ENABLE command.

This command requires support for IMAP4rev2 or the ENABLE extension.

func (*Client) Expunge 

func (c *Client) Expunge() *ExpungeCommand

Expunge sends an EXPUNGE command.

func (*Client) Fetch 

func (c *Client) Fetch(numSet imap.NumSet, options *imap.FetchOptions) *FetchCommand

Fetch sends a FETCH command.

The caller must fully consume the FetchCommand. A simple way to do so is to defer a call to FetchCommand.Close.

A nil options pointer is equivalent to a zero options value.

Example 
var c *imapclient.Client

seqSet := imap.SeqSetNum(1)
fetchOptions := &imap.FetchOptions{
	Flags:    true,
	Envelope: true,
	BodySection: []*imap.FetchItemBodySection{
		{Specifier: imap.PartSpecifierHeader},
	},
}
messages, err := c.Fetch(seqSet, fetchOptions).Collect()
if err != nil {
	log.Fatalf("FETCH command failed: %v", err)
}

msg := messages[0]
var header []byte
for _, buf := range msg.BodySection {
	header = buf
	break
}

log.Printf("Flags: %v", msg.Flags)
log.Printf("Subject: %v", msg.Envelope.Subject)
log.Printf("Header:\n%v", string(header))

Output:
Example (ParseBody) 
var c *imapclient.Client

// Send a FETCH command to fetch the message body
seqSet := imap.SeqSetNum(1)
fetchOptions := &imap.FetchOptions{
	BodySection: []*imap.FetchItemBodySection{{}},
}
fetchCmd := c.Fetch(seqSet, fetchOptions)
defer fetchCmd.Close()

msg := fetchCmd.Next()
if msg == nil {
	log.Fatalf("FETCH command did not return any message")
}

// Find the body section in the response
var bodySection imapclient.FetchItemDataBodySection
ok := false
for {
	item := msg.Next()
	if item == nil {
		break
	}
	bodySection, ok = item.(imapclient.FetchItemDataBodySection)
	if ok {
		break
	}
}
if !ok {
	log.Fatalf("FETCH command did not return body section")
}

// Read the message via the go-message library
mr, err := mail.CreateReader(bodySection.Literal)
if err != nil {
	log.Fatalf("failed to create mail reader: %v", err)
}

// Print a few header fields
h := mr.Header
if date, err := h.Date(); err != nil {
	log.Printf("failed to parse Date header field: %v", err)
} else {
	log.Printf("Date: %v", date)
}
if to, err := h.AddressList("To"); err != nil {
	log.Printf("failed to parse To header field: %v", err)
} else {
	log.Printf("To: %v", to)
}
if subject, err := h.Text("Subject"); err != nil {
	log.Printf("failed to parse Subject header field: %v", err)
} else {
	log.Printf("Subject: %v", subject)
}

// Process the message's parts
for {
	p, err := mr.NextPart()
	if err == io.EOF {
		break
	} else if err != nil {
		log.Fatalf("failed to read message part: %v", err)
	}

	switch h := p.Header.(type) {
	case *mail.InlineHeader:
		// This is the message's text (can be plain-text or HTML)
		b, _ := io.ReadAll(p.Body)
		log.Printf("Inline text: %v", string(b))
	case *mail.AttachmentHeader:
		// This is an attachment
		filename, _ := h.Filename()
		log.Printf("Attachment: %v", filename)
	}
}

if err := fetchCmd.Close(); err != nil {
	log.Fatalf("FETCH command failed: %v", err)
}

Output:
Example (StreamBody) 
var c *imapclient.Client

seqSet := imap.SeqSetNum(1)
fetchOptions := &imap.FetchOptions{
	UID:         true,
	BodySection: []*imap.FetchItemBodySection{{}},
}
fetchCmd := c.Fetch(seqSet, fetchOptions)
defer fetchCmd.Close()

for {
	msg := fetchCmd.Next()
	if msg == nil {
		break
	}

	for {
		item := msg.Next()
		if item == nil {
			break
		}

		switch item := item.(type) {
		case imapclient.FetchItemDataUID:
			log.Printf("UID: %v", item.UID)
		case imapclient.FetchItemDataBodySection:
			b, err := io.ReadAll(item.Literal)
			if err != nil {
				log.Fatalf("failed to read body section: %v", err)
			}
			log.Printf("Body:\n%v", string(b))
		}
	}
}

if err := fetchCmd.Close(); err != nil {
	log.Fatalf("FETCH command failed: %v", err)
}

Output:

func (*Client) GetMetadata 

func (c *Client) GetMetadata(mailbox string, entries []string, options *GetMetadataOptions) *GetMetadataCommand

GetMetadata sends a GETMETADATA command.

This command requires support for the METADATA or METADATA-SERVER extension.

func (*Client) GetQuota 

func (c *Client) GetQuota(root string) *GetQuotaCommand

GetQuota sends a GETQUOTA command.

This command requires support for the QUOTA extension.

func (*Client) GetQuotaRoot 

func (c *Client) GetQuotaRoot(mailbox string) *GetQuotaRootCommand

GetQuotaRoot sends a GETQUOTAROOT command.

This command requires support for the QUOTA extension.

func (*Client) Idle 

func (c *Client) Idle() (*IdleCommand, error)

Idle sends an IDLE command.

Unlike other commands, this method blocks until the server acknowledges it. On success, the IDLE command is running and other commands cannot be sent. The caller must invoke IdleCommand.Close to stop IDLE and unblock the client.

This command requires support for IMAP4rev2 or the IDLE extension. The IDLE command is restarted automatically to avoid getting disconnected due to inactivity timeouts.

Example 
package main

import (
	"log"
	"time"

	"github.com/emersion/go-imap/v2/imapclient"
)

func main() {
	options := imapclient.Options{
		UnilateralDataHandler: &imapclient.UnilateralDataHandler{
			Expunge: func(seqNum uint32) {
				log.Printf("message %v has been expunged", seqNum)
			},
			Mailbox: func(data *imapclient.UnilateralDataMailbox) {
				if data.NumMessages != nil {
					log.Printf("a new message has been received")
				}
			},
		},
	}

	c, err := imapclient.DialTLS("mail.example.org:993", &options)
	if err != nil {
		log.Fatalf("failed to dial IMAP server: %v", err)
	}
	defer c.Close()

	if err := c.Login("root", "asdf").Wait(); err != nil {
		log.Fatalf("failed to login: %v", err)
	}
	if err := c.Select("INBOX", nil); err != nil {
		log.Fatalf("failed to select INBOX: %v", err)
	}

	// Start idling
	idleCmd, err := c.Idle()
	if err != nil {
		log.Fatalf("IDLE command failed: %v", err)
	}

	// Wait for 30s to receive updates from the server
	time.Sleep(30 * time.Second)

	// Stop idling
	if err := idleCmd.Close(); err != nil {
		log.Fatalf("failed to stop idling: %v", err)
	}
}

Output:

func (*Client) List 

func (c *Client) List(ref, pattern string, options *imap.ListOptions) *ListCommand

List sends a LIST command.

The caller must fully consume the ListCommand. A simple way to do so is to defer a call to ListCommand.Close.

A nil options pointer is equivalent to a zero options value.

A non-zero options value requires support for IMAP4rev2 or the LIST-EXTENDED extension.

Example (Stream) 
var c *imapclient.Client

// ReturnStatus requires server support for IMAP4rev2 or LIST-STATUS
listCmd := c.List("", "%", &imap.ListOptions{
	ReturnStatus: &imap.StatusOptions{
		NumMessages: true,
		NumUnseen:   true,
	},
})
for {
	mbox := listCmd.Next()
	if mbox == nil {
		break
	}
	log.Printf("Mailbox %q contains %v messages (%v unseen)", mbox.Mailbox, mbox.Status.NumMessages, mbox.Status.NumUnseen)
}
if err := listCmd.Close(); err != nil {
	log.Fatalf("LIST command failed: %v", err)
}

Output:

func (*Client) Login 

func (c *Client) Login(username, password string) *Command

Login sends a LOGIN command.

func (*Client) Logout 

func (c *Client) Logout() *Command

Logout sends a LOGOUT command.

This command informs the server that the client is done with the connection.

func (*Client) Mailbox 

func (c *Client) Mailbox() *SelectedMailbox

Mailbox returns the state of the currently selected mailbox.

If there is no currently selected mailbox, nil is returned.

The returned struct must not be mutated.

func (*Client) Move 

func (c *Client) Move(numSet imap.NumSet, mailbox string) *MoveCommand

Move sends a MOVE command.

If the server doesn't support IMAP4rev2 nor the MOVE extension, a fallback with COPY + STORE + EXPUNGE commands is used.

func (*Client) Namespace 

func (c *Client) Namespace() *NamespaceCommand

Namespace sends a NAMESPACE command.

This command requires support for IMAP4rev2 or the NAMESPACE extension.

func (*Client) Noop 

func (c *Client) Noop() *Command

Noop sends a NOOP command.

func (*Client) Rename 

func (c *Client) Rename(mailbox, newName string) *Command

Rename sends a RENAME command.

func (*Client) Search 

func (c *Client) Search(criteria *imap.SearchCriteria, options *imap.SearchOptions) *SearchCommand

Search sends a SEARCH command.

Example 
var c *imapclient.Client

data, err := c.UIDSearch(&imap.SearchCriteria{
	Body: []string{"Hello world"},
}, nil).Wait()
if err != nil {
	log.Fatalf("UID SEARCH command failed: %v", err)
}
log.Fatalf("UIDs matching the search criteria: %v", data.AllUIDs())

Output:

func (*Client) Select 

func (c *Client) Select(mailbox string, options *imap.SelectOptions) *SelectCommand

Select sends a SELECT or EXAMINE command.

A nil options pointer is equivalent to a zero options value.

func (*Client) SetMetadata 

func (c *Client) SetMetadata(mailbox string, entries map[string]*[]byte) *Command

SetMetadata sends a SETMETADATA command.

To remove an entry, set it to nil.

This command requires support for the METADATA or METADATA-SERVER extension.

func (*Client) SetQuota 

func (c *Client) SetQuota(root string, limits map[imap.QuotaResourceType]int64) *Command

SetQuota sends a SETQUOTA command.

This command requires support for the SETQUOTA extension.

func (*Client) Sort 

func (c *Client) Sort(options *SortOptions) *SortCommand

Sort sends a SORT command.

This command requires support for the SORT extension.

func (*Client) State 

func (c *Client) State() imap.ConnState

State returns the current connection state of the client.

func (*Client) Status 

func (c *Client) Status(mailbox string, options *imap.StatusOptions) *StatusCommand

Status sends a STATUS command.

A nil options pointer is equivalent to a zero options value.

Example 
var c *imapclient.Client

options := imap.StatusOptions{NumMessages: true}
if data, err := c.Status("INBOX", &options).Wait(); err != nil {
	log.Fatalf("STATUS command failed: %v", err)
} else {
	log.Printf("INBOX contains %v messages", *data.NumMessages)
}

Output:

func (*Client) Store 

func (c *Client) Store(numSet imap.NumSet, store *imap.StoreFlags, options *imap.StoreOptions) *FetchCommand

Store sends a STORE command.

Unless StoreFlags.Silent is set, the server will return the updated values.

A nil options pointer is equivalent to a zero options value.

Example 
var c *imapclient.Client

seqSet := imap.SeqSetNum(1)
storeFlags := imap.StoreFlags{
	Op:     imap.StoreFlagsAdd,
	Flags:  []imap.Flag{imap.FlagFlagged},
	Silent: true,
}
if err := c.Store(seqSet, &storeFlags, nil).Close(); err != nil {
	log.Fatalf("STORE command failed: %v", err)
}

Output:

func (*Client) Subscribe 

func (c *Client) Subscribe(mailbox string) *Command

Subscribe sends a SUBSCRIBE command.

func (*Client) Thread 

func (c *Client) Thread(options *ThreadOptions) *ThreadCommand

Thread sends a THREAD command.

This command requires support for the THREAD extension.

func (*Client) UIDExpunge 

func (c *Client) UIDExpunge(uids imap.UIDSet) *ExpungeCommand

UIDExpunge sends a UID EXPUNGE command.

This command requires support for IMAP4rev2 or the UIDPLUS extension.

func (*Client) UIDSearch 

func (c *Client) UIDSearch(criteria *imap.SearchCriteria, options *imap.SearchOptions) *SearchCommand

UIDSearch sends a UID SEARCH command.

func (*Client) UIDSort 

func (c *Client) UIDSort(options *SortOptions) *SortCommand

UIDSort sends a UID SORT command.

See Sort.

func (*Client) UIDThread 

func (c *Client) UIDThread(options *ThreadOptions) *ThreadCommand

UIDThread sends a UID THREAD command.

See Thread.

func (*Client) Unauthenticate 

func (c *Client) Unauthenticate() *Command

Unauthenticate sends an UNAUTHENTICATE command.

This command requires support for the UNAUTHENTICATE extension.

func (*Client) Unselect 

func (c *Client) Unselect() *Command

Unselect sends an UNSELECT command.

This command requires support for IMAP4rev2 or the UNSELECT extension.

func (*Client) UnselectAndExpunge 

func (c *Client) UnselectAndExpunge() *Command

UnselectAndExpunge sends a CLOSE command.

CLOSE implicitly performs a silent EXPUNGE command.

func (*Client) Unsubscribe 

func (c *Client) Unsubscribe(mailbox string) *Command

Subscribe sends an UNSUBSCRIBE command.

func (*Client) WaitGreeting 

func (c *Client) WaitGreeting() error

WaitGreeting waits for the server's initial greeting.

type Command 

type Command struct {
	// contains filtered or unexported fields
}

Command is a basic IMAP command.

func (*Command) Wait 

func (cmd *Command) Wait() error

Wait blocks until the command has completed.

type CopyCommand 

type CopyCommand struct {
	// contains filtered or unexported fields
}

CopyCommand is a COPY command.

func (*CopyCommand) Wait 

func (cmd *CopyCommand) Wait() (*imap.CopyData, error)

type EnableCommand 

type EnableCommand struct {
	// contains filtered or unexported fields
}

EnableCommand is an ENABLE command.

func (*EnableCommand) Wait 

func (cmd *EnableCommand) Wait() (*EnableData, error)

type EnableData 

type EnableData struct {
	// Capabilities that were successfully enabled
	Caps imap.CapSet
}

EnableData is the data returned by the ENABLE command.

type ExpungeCommand 

type ExpungeCommand struct {
	// contains filtered or unexported fields
}

ExpungeCommand is an EXPUNGE command.

The caller must fully consume the ExpungeCommand. A simple way to do so is to defer a call to FetchCommand.Close.

func (*ExpungeCommand) Close 

func (cmd *ExpungeCommand) Close() error

Close releases the command.

Calling Close unblocks the IMAP client decoder and lets it read the next responses. Next will always return nil after Close.

func (*ExpungeCommand) Collect 

func (cmd *ExpungeCommand) Collect() ([]uint32, error)

Collect accumulates expunged sequence numbers into a list.

This is equivalent to calling Next repeatedly and then Close.

func (*ExpungeCommand) Next 

func (cmd *ExpungeCommand) Next() uint32

Next advances to the next expunged message sequence number.

On success, the message sequence number is returned. On error or if there are no more messages, 0 is returned. To check the error value, use Close.

type FetchCommand 

type FetchCommand struct {
	// contains filtered or unexported fields
}

FetchCommand is a FETCH command.

func (*FetchCommand) Close 

func (cmd *FetchCommand) Close() error

Close releases the command.

Calling Close unblocks the IMAP client decoder and lets it read the next responses. Next will always return nil after Close.

func (*FetchCommand) Collect 

func (cmd *FetchCommand) Collect() ([]*FetchMessageBuffer, error)

Collect accumulates message data into a list.

This method will read and store message contents in memory. This is acceptable when the message contents have a reasonable size, but may not be suitable when fetching e.g. attachments.

This is equivalent to calling Next repeatedly and then Close.

func (*FetchCommand) Next 

func (cmd *FetchCommand) Next() *FetchMessageData

Next advances to the next message.

On success, the message is returned. On error or if there are no more messages, nil is returned. To check the error value, use Close.

type FetchItemData 

type FetchItemData interface {
	// contains filtered or unexported methods
}

FetchItemData contains a message's FETCH item data.

type FetchItemDataBinarySection 

type FetchItemDataBinarySection struct {
	Section *imap.FetchItemBinarySection
	Literal imap.LiteralReader
}

FetchItemDataBinarySection holds data returned by FETCH BINARY[].

type FetchItemDataBinarySectionSize 

type FetchItemDataBinarySectionSize struct {
	Part []int
	Size uint32
}

FetchItemDataBinarySectionSize holds data returned by FETCH BINARY.SIZE[].

type FetchItemDataBodySection 

type FetchItemDataBodySection struct {
	Section *imap.FetchItemBodySection
	Literal imap.LiteralReader
}

FetchItemDataBodySection holds data returned by FETCH BODY[].

type FetchItemDataBodyStructure 

type FetchItemDataBodyStructure struct {
	BodyStructure imap.BodyStructure
	IsExtended    bool // True if BODYSTRUCTURE, false if BODY
}

FetchItemDataBodyStructure holds data returned by FETCH BODYSTRUCTURE or FETCH BODY.

type FetchItemDataEnvelope 

type FetchItemDataEnvelope struct {
	Envelope *imap.Envelope
}

FetchItemDataEnvelope holds data returned by FETCH ENVELOPE.

type FetchItemDataFlags 

type FetchItemDataFlags struct {
	Flags []imap.Flag
}

FetchItemDataFlags holds data returned by FETCH FLAGS.

type FetchItemDataInternalDate 

type FetchItemDataInternalDate struct {
	Time time.Time
}

FetchItemDataInternalDate holds data returned by FETCH INTERNALDATE.

type FetchItemDataModSeq 

type FetchItemDataModSeq struct {
	ModSeq uint64
}

FetchItemDataModSeq holds data returned by FETCH MODSEQ.

This requires the CONDSTORE extension.

type FetchItemDataRFC822Size 

type FetchItemDataRFC822Size struct {
	Size int64
}

FetchItemDataRFC822Size holds data returned by FETCH RFC822.SIZE.

type FetchItemDataUID 

type FetchItemDataUID struct {
	UID imap.UID
}

FetchItemDataUID holds data returned by FETCH UID.

type FetchMessageBuffer 

type FetchMessageBuffer struct {
	SeqNum            uint32
	Flags             []imap.Flag
	Envelope          *imap.Envelope
	InternalDate      time.Time
	RFC822Size        int64
	UID               imap.UID
	BodyStructure     imap.BodyStructure
	BodySection       map[*imap.FetchItemBodySection][]byte
	BinarySection     map[*imap.FetchItemBinarySection][]byte
	BinarySectionSize []FetchItemDataBinarySectionSize
	ModSeq            uint64 // requires CONDSTORE
}

FetchMessageBuffer is a buffer for the data returned by FetchMessageData.

The SeqNum field is always populated. All remaining fields are optional.

type FetchMessageData 

type FetchMessageData struct {
	SeqNum uint32
	// contains filtered or unexported fields
}

FetchMessageData contains a message's FETCH data.

func (*FetchMessageData) Collect 

func (data *FetchMessageData) Collect() (*FetchMessageBuffer, error)

Collect accumulates message data into a struct.

This method will read and store message contents in memory. This is acceptable when the message contents have a reasonable size, but may not be suitable when fetching e.g. attachments.

func (*FetchMessageData) Next 

func (data *FetchMessageData) Next() FetchItemData

Next advances to the next data item for this message.

If there is one or more data items left, the next item is returned. Otherwise nil is returned.

type GetMetadataCommand 

type GetMetadataCommand struct {
	// contains filtered or unexported fields
}

GetMetadataCommand is a GETMETADATA command.

func (*GetMetadataCommand) Wait 

func (cmd *GetMetadataCommand) Wait() (*GetMetadataData, error)

type GetMetadataData 

type GetMetadataData struct {
	Mailbox string
	Entries map[string]*[]byte
}

GetMetadataData is the data returned by the GETMETADATA command.

type GetMetadataDepth 

type GetMetadataDepth int
const (
	GetMetadataDepthZero     GetMetadataDepth = 0
	GetMetadataDepthOne      GetMetadataDepth = 1
	GetMetadataDepthInfinity GetMetadataDepth = -1
)

func (GetMetadataDepth) String 

func (depth GetMetadataDepth) String() string

type GetMetadataOptions 

type GetMetadataOptions struct {
	MaxSize *uint32
	Depth   GetMetadataDepth
}

GetMetadataOptions contains options for the GETMETADATA command.

type GetQuotaCommand 

type GetQuotaCommand struct {
	// contains filtered or unexported fields
}

GetQuotaCommand is a GETQUOTA command.

func (*GetQuotaCommand) Wait 

func (cmd *GetQuotaCommand) Wait() (*QuotaData, error)

type GetQuotaRootCommand 

type GetQuotaRootCommand struct {
	// contains filtered or unexported fields
}

GetQuotaRootCommand is a GETQUOTAROOT command.

func (*GetQuotaRootCommand) Wait 

func (cmd *GetQuotaRootCommand) Wait() ([]QuotaData, error)

type IdleCommand 

type IdleCommand struct {
	// contains filtered or unexported fields
}

IdleCommand is an IDLE command.

Initially, the IDLE command is running. The server may send unilateral data. The client cannot send any command while IDLE is running.

Close must be called to stop the IDLE command.

func (*IdleCommand) Close 

func (cmd *IdleCommand) Close() error

Close stops the IDLE command.

This method blocks until the command to stop IDLE is written, but doesn't wait for the server to respond. Callers can use Wait for this purpose.

func (*IdleCommand) Wait 

func (cmd *IdleCommand) Wait() error

Wait blocks until the IDLE command has completed.

Wait can only be called after Close.

type ListCommand 

type ListCommand struct {
	// contains filtered or unexported fields
}

ListCommand is a LIST command.

func (*ListCommand) Close 

func (cmd *ListCommand) Close() error

Close releases the command.

Calling Close unblocks the IMAP client decoder and lets it read the next responses. Next will always return nil after Close.

func (*ListCommand) Collect 

func (cmd *ListCommand) Collect() ([]*imap.ListData, error)

Collect accumulates mailboxes into a list.

This is equivalent to calling Next repeatedly and then Close.

func (*ListCommand) Next 

func (cmd *ListCommand) Next() *imap.ListData

Next advances to the next mailbox.

On success, the mailbox LIST data is returned. On error or if there are no more mailboxes, nil is returned.

type MoveCommand 

type MoveCommand struct {
	// contains filtered or unexported fields
}

MoveCommand is a MOVE command.

func (*MoveCommand) Wait 

func (cmd *MoveCommand) Wait() (*MoveData, error)

type MoveData 

type MoveData struct {
	// requires UIDPLUS or IMAP4rev2
	UIDValidity uint32
	SourceUIDs  imap.NumSet
	DestUIDs    imap.NumSet
}

MoveData contains the data returned by a MOVE command.

type NamespaceCommand 

type NamespaceCommand struct {
	// contains filtered or unexported fields
}

NamespaceCommand is a NAMESPACE command.

func (*NamespaceCommand) Wait 

func (cmd *NamespaceCommand) Wait() (*imap.NamespaceData, error)

type Options 

type Options struct {
	// TLS configuration for use by DialTLS and DialStartTLS. If nil, the
	// default configuration is used.
	TLSConfig *tls.Config
	// Raw ingress and egress data will be written to this writer, if any.
	// Note, this may include sensitive information such as credentials used
	// during authentication.
	DebugWriter io.Writer
	// Unilateral data handler.
	UnilateralDataHandler *UnilateralDataHandler
	// Decoder for RFC 2047 words.
	WordDecoder *mime.WordDecoder
}

Options contains options for Client.

type QuotaData 

type QuotaData struct {
	Root      string
	Resources map[imap.QuotaResourceType]QuotaResourceData
}

QuotaData is the data returned by a QUOTA response.

type QuotaResourceData 

type QuotaResourceData struct {
	Usage int64
	Limit int64
}

QuotaResourceData contains the usage and limit for a quota resource.

type SearchCommand 

type SearchCommand struct {
	// contains filtered or unexported fields
}

SearchCommand is a SEARCH command.

func (*SearchCommand) Wait 

func (cmd *SearchCommand) Wait() (*imap.SearchData, error)

type SelectCommand 

type SelectCommand struct {
	// contains filtered or unexported fields
}

SelectCommand is a SELECT command.

func (*SelectCommand) Wait 

func (cmd *SelectCommand) Wait() (*imap.SelectData, error)

type SelectedMailbox 

type SelectedMailbox struct {
	Name           string
	NumMessages    uint32
	Flags          []imap.Flag
	PermanentFlags []imap.Flag
}

SelectedMailbox contains metadata for the currently selected mailbox.

type SortCommand 

type SortCommand struct {
	// contains filtered or unexported fields
}

SortCommand is a SORT command.

func (*SortCommand) Wait 

func (cmd *SortCommand) Wait() ([]uint32, error)

type SortCriterion 

type SortCriterion struct {
	Key     SortKey
	Reverse bool
}

type SortKey 

type SortKey string
const (
	SortKeyArrival SortKey = "ARRIVAL"
	SortKeyCc      SortKey = "CC"
	SortKeyDate    SortKey = "DATE"
	SortKeyFrom    SortKey = "FROM"
	SortKeySize    SortKey = "SIZE"
	SortKeySubject SortKey = "SUBJECT"
	SortKeyTo      SortKey = "TO"
)

type SortOptions 

type SortOptions struct {
	SearchCriteria *imap.SearchCriteria
	SortCriteria   []SortCriterion
}

SortOptions contains options for the SORT command.

type StatusCommand 

type StatusCommand struct {
	// contains filtered or unexported fields
}

StatusCommand is a STATUS command.

func (*StatusCommand) Wait 

func (cmd *StatusCommand) Wait() (*imap.StatusData, error)

type ThreadCommand 

type ThreadCommand struct {
	// contains filtered or unexported fields
}

ThreadCommand is a THREAD command.

func (*ThreadCommand) Wait 

func (cmd *ThreadCommand) Wait() ([]ThreadData, error)

type ThreadData 

type ThreadData struct {
	Chain      []uint32
	SubThreads []ThreadData
}

type ThreadOptions 

type ThreadOptions struct {
	Algorithm      imap.ThreadAlgorithm
	SearchCriteria *imap.SearchCriteria
}

ThreadOptions contains options for the THREAD command.

type UnilateralDataHandler 

type UnilateralDataHandler struct {
	Expunge func(seqNum uint32)
	Mailbox func(data *UnilateralDataMailbox)
	Fetch   func(msg *FetchMessageData)

	// requires ENABLE METADATA or ENABLE SERVER-METADATA
	Metadata func(mailbox string, entries []string)
}

UnilateralDataHandler handles unilateral data.

The handler will block the client while running. If the caller intends to perform slow operations, a buffered channel and a separate goroutine should be used.

The handler will be invoked in an arbitrary goroutine.

See Options.UnilateralDataHandler.

type UnilateralDataMailbox 

type UnilateralDataMailbox struct {
	NumMessages    *uint32
	Flags          []imap.Flag
	PermanentFlags []imap.Flag
}

UnilateralDataMailbox describes a mailbox status update.

If a field is nil, it hasn't changed.

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