class Net::IMAP

Parent:
Object
Included modules:
MonitorMixin, OpenSSL, OpenSSL::SSL

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality. The protocol is described in [IMAP].

IMAP Overview

An IMAP client connects to a server, and then authenticates itself using either authenticate() or login(). Having authenticated itself, there is a range of commands available to it. Most work with mailboxes, which may be arranged in an hierarchical namespace, and each of which contains zero or more messages. How this is implemented on the server is implementation-dependent; on a UNIX server, it will frequently be implemented as files in mailbox format within a hierarchy of directories.

To work on the messages within a mailbox, the client must first select that mailbox, using either select() or (for read-only access) examine(). Once the client has successfully selected a mailbox, they enter selected state, and that mailbox becomes the current mailbox, on which mail-item related commands implicitly operate.

Messages have two sorts of identifiers: message sequence numbers and UIDs.

Message sequence numbers number messages within a mailbox from 1 up to the number of items in the mailbox. If a new message arrives during a session, it receives a sequence number equal to the new size of the mailbox. If messages are expunged from the mailbox, remaining messages have their sequence numbers “shuffled down” to fill the gaps.

UIDs, on the other hand, are permanently guaranteed not to identify another message within the same mailbox, even if the existing message is deleted. UIDs are required to be assigned in ascending (but not necessarily sequential) order within a mailbox; this means that if a non-IMAP client rearranges the order of mailitems within a mailbox, the UIDs have to be reassigned. An IMAP client thus cannot rearrange message orders.

Examples of Usage

List sender and subject of all recent messages in the default mailbox

imap = Net::IMAP.new('mail.example.com')
imap.authenticate('LOGIN', 'joe_user', 'joes_password')
imap.examine('INBOX')
imap.search(["RECENT"]).each do |message_id|
  envelope = imap.fetch(message_id, "ENVELOPE")[0].attr["ENVELOPE"]
  puts "#{envelope.from[0].name}: \t#{envelope.subject}"
end

Move all messages from April 2003 from “Mail/sent-mail” to “Mail/sent-apr03”

imap = Net::IMAP.new('mail.example.com')
imap.authenticate('LOGIN', 'joe_user', 'joes_password')
imap.select('Mail/sent-mail')
if not imap.list('Mail/', 'sent-apr03')
  imap.create('Mail/sent-apr03')
end
imap.search(["BEFORE", "30-Apr-2003", "SINCE", "1-Apr-2003"]).each do |message_id|
  imap.copy(message_id, "Mail/sent-apr03")
  imap.store(message_id, "+FLAGS", [:Deleted])
end
imap.expunge

Thread Safety

Net::IMAP supports concurrent threads. For example,

imap = Net::IMAP.new("imap.foo.net", "imap2")
imap.authenticate("cram-md5", "bar", "password")
imap.select("inbox")
fetch_thread = Thread.start { imap.fetch(1..-1, "UID") }
search_result = imap.search(["BODY", "hello"])
fetch_result = fetch_thread.value
imap.disconnect

This script invokes the FETCH command and the SEARCH command concurrently.

Errors

An IMAP server can send three different types of responses to indicate failure:

NO

the attempted command could not be successfully completed. For instance, the username/password used for logging in are incorrect; the selected mailbox does not exist; etc.

BAD

the request from the client does not follow the server's understanding of the IMAP protocol. This includes attempting commands from the wrong client state; for instance, attempting to perform a SEARCH command without having SELECTed a current mailbox. It can also signal an internal server failure (such as a disk crash) has occurred.

BYE

the server is saying goodbye. This can be part of a normal logout sequence, and can be used as part of a login sequence to indicate that the server is (for some reason) unwilling to accept your connection. As a response to any other command, it indicates either that the server is shutting down, or that the server is timing out the client connection due to inactivity.

These three error response are represented by the errors Net::IMAP::NoResponseError, Net::IMAP::BadResponseError, and Net::IMAP::ByeResponseError, all of which are subclasses of Net::IMAP::ResponseError. Essentially, all methods that involve sending a request to the server can generate one of these errors. Only the most pertinent instances have been documented below.

Because the IMAP class uses Sockets for communication, its methods are also susceptible to the various errors that can occur when working with sockets. These are generally represented as Errno errors. For instance, any method that involves sending a request to the server and/or receiving a response from it could raise an Errno::EPIPE error if the network connection unexpectedly goes down. See the socket(7), ip(7), tcp(7), socket(2), connect(2), and associated man pages.

Finally, a Net::IMAP::DataFormatError is thrown if low-level data is found to be in an incorrect format (for instance, when converting between UTF-8 and UTF-16), and Net::IMAP::ResponseParseError is thrown if a server response is non-parseable.

References

[IMAP]
  1. Crispin, “INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1”,

RFC 2060, December 1996. (Note: since obsoleted by RFC 3501)

[LANGUAGE-TAGS]

Alvestrand, H., “Tags for the Identification of Languages”, RFC 1766, March 1995.

[MD5]

Myers, J., and M. Rose, “The Content-MD5 Header Field”, RFC 1864, October 1995.

[MIME-IMB]

Freed, N., and N. Borenstein, “MIME (Multipurpose Internet Mail Extensions) Part One: Format of Internet Message Bodies”, RFC 2045, November 1996.

[RFC-822]

Crocker, D., “Standard for the Format of ARPA Internet Text Messages”, STD 11, RFC 822, University of Delaware, August 1982.

[RFC-2087]

Myers, J., “IMAP4 QUOTA extension”, RFC 2087, January 1997.

[RFC-2086]

Myers, J., “IMAP4 ACL extension”, RFC 2086, January 1997.

[RFC-2195]

Klensin, J., Catoe, R., and Krumviede, P., “IMAP/POP AUTHorize Extension for Simple Challenge/Response”, RFC 2195, September 1997.

[SORT-THREAD-EXT]

Crispin, M., “INTERNET MESSAGE ACCESS PROTOCOL - SORT and THREAD Extensions”, draft-ietf-imapext-sort, May 2003.

[OSSL]

www.openssl.org

[RSSL]

savannah.gnu.org/projects/rubypki

[UTF7]

Goldsmith, D. and Davis, M., “UTF-7: A Mail-Safe Transformation Format of Unicode”, RFC 2152, May 1997.

Constants

ANSWERED

Flag indicating a message has been answered.

Address

Net::IMAP::Address represents electronic mail addresses.

Fields:

name

Returns the phrase from [RFC-822] mailbox.

route

Returns the route from [RFC-822] route-addr.

mailbox

nil indicates end of [RFC-822] group. If non-nil and host is nil, returns [RFC-822] group name. Otherwise, returns [RFC-822] local-part.

host

nil indicates [RFC-822] group syntax. Otherwise, returns [RFC-822] domain name.

ContentDisposition

Net::IMAP::ContentDisposition represents Content-Disposition fields.

Fields:

dsp_type

Returns the disposition type.

param

Returns a hash that represents parameters of the Content-Disposition field.

ContinuationRequest

Net::IMAP::ContinuationRequest represents command continuation requests.

The command continuation request response is indicated by a “+” token instead of a tag. This form of response indicates that the server is ready to accept the continuation of a command from the client. The remainder of this response is a line of text.

continue_req    ::= "+" SPACE (resp_text / base64)

Fields:

data

Returns the data (Net::IMAP::ResponseText).

raw_data

Returns the raw data string.

DATE_MONTH
DELETED

Flag indicating a message has been marked for deletion. This will occur when the mailbox is closed or expunged.

DRAFT

Flag indicating a message is only a draft or work-in-progress version.

Envelope

Net::IMAP::Envelope represents envelope structures of messages.

Fields:

date

Returns a string that represents the date.

subject

Returns a string that represents the subject.

from

Returns an array of Net::IMAP::Address that represents the from.

sender

Returns an array of Net::IMAP::Address that represents the sender.

reply_to

Returns an array of Net::IMAP::Address that represents the reply-to.

to

Returns an array of Net::IMAP::Address that represents the to.

cc

Returns an array of Net::IMAP::Address that represents the cc.

bcc

Returns an array of Net::IMAP::Address that represents the bcc.

in_reply_to

Returns a string that represents the in-reply-to.

message_id

Returns a string that represents the message-id.

FLAGGED

Flag indicating a message has been flagged for special or urgent attention.

FetchData

Net::IMAP::FetchData represents the contents of the FETCH response.

Fields:

seqno

Returns the message sequence number. (Note: not the unique identifier, even for the UID command response.)

attr

Returns a hash. Each key is a data item name, and each value is its value.

The current data items are:

BODY

A form of BODYSTRUCTURE without extension data.

Net::IMAP::BodyTypeBasic, Net::IMAP::BodyTypeText, Net::IMAP::BodyTypeMessage, Net::IMAP::BodyTypeMultipart.
ENVELOPE

A Net::IMAP::Envelope object that describes the envelope structure of a message.

FLAGS

A array of flag symbols that are set for this message. Flag symbols are capitalized by String#capitalize.

INTERNALDATE

A string representing the internal date of the message.

RFC822

Equivalent to BODY[].

RFC822.HEADER

Equivalent to BODY.PEEK.

RFC822.SIZE

A number expressing the [RFC-822] size of the message.

RFC822.TEXT

Equivalent to BODY.

UID

A number expressing the unique identifier of the message.

MARKED

Flag indicating that a mailbox has been marked “interesting” by the server; this commonly indicates that the mailbox contains new messages.

MailboxACLItem

Net::IMAP::MailboxACLItem represents the response from GETACL.

acl_data        ::= "ACL" SPACE mailbox *(SPACE identifier SPACE rights)

identifier      ::= astring

rights          ::= astring

Fields:

user

Login name that has certain rights to the mailbox that was specified with the getacl command.

rights

The access rights the indicated user has to the mailbox.

MailboxList

Net::IMAP::MailboxList represents contents of the LIST response.

mailbox_list    ::= "(" #("\Marked" / "\Noinferiors" /
                    "\Noselect" / "\Unmarked" / flag_extension) ")"
                    SPACE (<"> QUOTED_CHAR <"> / nil) SPACE mailbox

Fields:

attr

Returns the name attributes. Each name attribute is a symbol capitalized by String#capitalize, such as :Noselect (not :NoSelect).

delim

Returns the hierarchy delimiter.

name

Returns the mailbox name.

MailboxQuota

Net::IMAP::MailboxQuota represents contents of GETQUOTA response. This object can also be a response to GETQUOTAROOT. In the syntax specification below, the delimiter used with the “#” construct is a single space (SPACE).

quota_list      ::= "(" #quota_resource ")"

quota_resource  ::= atom SPACE number SPACE number

quota_response  ::= "QUOTA" SPACE astring SPACE quota_list

Fields:

mailbox

The mailbox with the associated quota.

usage

Current storage usage of the mailbox.

quota

Quota limit imposed on the mailbox.

MailboxQuotaRoot

Net::IMAP::MailboxQuotaRoot represents part of the GETQUOTAROOT response. (GETQUOTAROOT can also return Net::IMAP::MailboxQuota.)

quotaroot_response ::= "QUOTAROOT" SPACE astring *(SPACE astring)

Fields:

mailbox

The mailbox with the associated quota.

quotaroots

Zero or more quotaroots that affect the quota on the specified mailbox.

NOINFERIORS

Flag indicating that a mailbox context name cannot contain children.

NOSELECT

Flag indicating that a mailbox is not selected.

RECENT

Flag indicating that the message is “recent,” meaning that this session is the first session in which the client has been notified of this message.

ResponseCode

Net::IMAP::ResponseCode represents response codes.

resp_text_code  ::= "ALERT" / "PARSE" /
                    "PERMANENTFLAGS" SPACE "(" #(flag / "\*") ")" /
                    "READ-ONLY" / "READ-WRITE" / "TRYCREATE" /
                    "UIDVALIDITY" SPACE nz_number /
                    "UNSEEN" SPACE nz_number /
                    atom [SPACE 1*<any TEXT_CHAR except "]">]

Fields:

name

Returns the name, such as “ALERT”, “PERMANENTFLAGS”, or “UIDVALIDITY”.

data

Returns the data, if it exists.

ResponseText

Net::IMAP::ResponseText represents texts of responses. The text may be prefixed by the response code.

resp_text       ::= ["[" resp_text_code "]" SPACE] (text_mime2 / text)
                    ;; text SHOULD NOT begin with "[" or "="

Fields:

code

Returns the response code. See ((<Net::IMAP::ResponseCode>)).

text

Returns the text.

SEEN

Flag indicating a message has been seen.

StatusData

Net::IMAP::StatusData represents the contents of the STATUS response.

Fields:

mailbox

Returns the mailbox name.

attr

Returns a hash. Each key is one of “MESSAGES”, “RECENT”, “UIDNEXT”, “UIDVALIDITY”, “UNSEEN”. Each value is a number.

TaggedResponse

Net::IMAP::TaggedResponse represents tagged responses.

The server completion result response indicates the success or failure of the operation. It is tagged with the same tag as the client command which began the operation.

response_tagged ::= tag SPACE resp_cond_state CRLF

tag             ::= 1*<any ATOM_CHAR except "+">

resp_cond_state ::= ("OK" / "NO" / "BAD") SPACE resp_text

Fields:

tag

Returns the tag.

name

Returns the name, one of “OK”, “NO”, or “BAD”.

data

Returns the data. See ((<Net::IMAP::ResponseText>)).

raw_data

Returns the raw data string.

ThreadMember

Net::IMAP::ThreadMember represents a thread-node returned by #thread.

Fields:

seqno

The sequence number of this message.

children

An array of Net::IMAP::ThreadMember objects for mail items that are children of this in the thread.

UNMARKED

Flag indicating that the mailbox does not contains new messages.

UntaggedResponse

Net::IMAP::UntaggedResponse represents untagged responses.

Data transmitted by the server to the client and status responses that do not indicate command completion are prefixed with the token “*”, and are called untagged responses.

response_data   ::= "*" SPACE (resp_cond_state / resp_cond_bye /
                    mailbox_data / message_data / capability_data)

Fields:

name

Returns the name, such as “FLAGS”, “LIST”, or “FETCH”.

data

Returns the data such as an array of flag symbols, a ((<Net::IMAP::MailboxList>)) object.

raw_data

Returns the raw data string.

Attributes

client_thread[RW]

The thread to receive exceptions.

greeting[R]

Returns an initial greeting response from the server.

response_handlers[R]

Returns all response handlers.

responses[R]

Returns recorded untagged responses. For example:

imap.select("inbox")
p imap.responses["EXISTS"][-1]
#=> 2
p imap.responses["UIDVALIDITY"][-1]
#=> 968263756

Public Class Methods

add_authenticator(auth_type, authenticator) Show source
# File lib/net/imap.rb, line 295
def self.add_authenticator(auth_type, authenticator)
  @@authenticators[auth_type] = authenticator
end

Adds an authenticator for #authenticate. auth_type is the type of authentication this authenticator supports (for instance, “LOGIN”). The authenticator is an object which defines a process() method to handle authentication with the server. See Net::IMAP::LoginAuthenticator, Net::IMAP::CramMD5Authenticator, and Net::IMAP::DigestMD5Authenticator for examples.

If auth_type refers to an existing authenticator, it will be replaced by the new one.

debug() Show source
# File lib/net/imap.rb, line 265
def self.debug
  return @@debug
end

Returns the debug mode.

debug=(val) Show source
# File lib/net/imap.rb, line 270
def self.debug=(val)
  return @@debug = val
end

Sets the debug mode.

decode_utf7(s) Show source
# File lib/net/imap.rb, line 994
def self.decode_utf7(s)
  return s.gsub(/&([^-]+)?-/n) {
    if $1
      ($1.tr(",", "/") + "===").unpack("m")[0].encode(Encoding::UTF_8, Encoding::UTF_16BE)
    else
      "&"
    end
  }
end

Decode a string from modified UTF-7 format to UTF-8.

UTF-7 is a 7-bit encoding of Unicode [UTF7]. IMAP uses a slightly modified version of this to encode mailbox names containing non-ASCII characters; see [IMAP] section 5.1.3.

Net::IMAP does not automatically encode and decode mailbox names to and from UTF-7.

default_imap_port()
Alias for: default_port
default_imaps_port()
Alias for: default_tls_port
default_port() Show source
# File lib/net/imap.rb, line 300
def self.default_port
  return PORT
end

The default port for IMAP connections, port 143

Also aliased as: default_imap_port
default_ssl_port()
Alias for: default_tls_port
default_tls_port() Show source
# File lib/net/imap.rb, line 305
def self.default_tls_port
  return SSL_PORT
end

The default port for IMAPS connections, port 993

encode_utf7(s) Show source
# File lib/net/imap.rb, line 1005
def self.encode_utf7(s)
  return s.gsub(/(&)|[^\x20-\x7e]+/) {
    if $1
      "&-"
    else
      base64 = [$&.encode(Encoding::UTF_16BE)].pack("m")
      "&" + base64.delete("=\n").tr("/", ",") + "-"
    end
  }.force_encoding("ASCII-8BIT")
end

Encode a string from UTF-8 format to modified UTF-7.

format_date(time) Show source
# File lib/net/imap.rb, line 1017
def self.format_date(time)
  return time.strftime('%d-%b-%Y')
end

Formats time as an IMAP-style date.

format_datetime(time) Show source
# File lib/net/imap.rb, line 1022
def self.format_datetime(time)
  return time.strftime('%d-%b-%Y %H:%M %z')
end

Formats time as an IMAP-style date-time.

max_flag_count() Show source
# File lib/net/imap.rb, line 275
def self.max_flag_count
  return @@max_flag_count
end

Returns the max number of flags interned to symbols.

max_flag_count=(count) Show source
# File lib/net/imap.rb, line 280
def self.max_flag_count=(count)
  @@max_flag_count = count
end

Sets the max number of flags interned to symbols.

Net::IMAP.new(host, options = {}) Show source
# File lib/net/imap.rb, line 1064
def initialize(host, port_or_options = {},
               usessl = false, certs = nil, verify = true)
  super()
  @host = host
  begin
    options = port_or_options.to_hash
  rescue NoMethodError
    # for backward compatibility
    options = {}
    options[:port] = port_or_options
    if usessl
      options[:ssl] = create_ssl_params(certs, verify)
    end
  end
  @port = options[:port] || (options[:ssl] ? SSL_PORT : PORT)
  @tag_prefix = "RUBY"
  @tagno = 0
  @parser = ResponseParser.new
  @sock = TCPSocket.open(@host, @port)
  begin
    if options[:ssl]
      start_tls_session(options[:ssl])
      @usessl = true
    else
      @usessl = false
    end
    @responses = Hash.new([].freeze)
    @tagged_responses = {}
    @response_handlers = []
    @tagged_response_arrival = new_cond
    @continuation_request_arrival = new_cond
    @idle_done_cond = nil
    @logout_command_tag = nil
    @debug_output_bol = true
    @exception = nil

    @greeting = get_response
    if @greeting.nil?
      raise Error, "connection closed"
    end
    if @greeting.name == "BYE"
      raise ByeResponseError, @greeting
    end

    @client_thread = Thread.current
    @receiver_thread = Thread.start {
      begin
        receive_responses
      rescue Exception
      end
    }
    @receiver_thread_terminating = false
  rescue Exception
    @sock.close
    raise
  end
end

Creates a new Net::IMAP object and connects it to the specified host.

options is an option hash, each key of which is a symbol.

The available options are:

port

Port number (default value is 143 for imap, or 993 for imaps)

ssl

If options is true, then an attempt will be made to use SSL (now TLS) to connect to the server. For this to work OpenSSL [OSSL] and the Ruby OpenSSL [RSSL] extensions need to be installed. If options is a hash, it's passed to OpenSSL::SSL::SSLContext#set_params as parameters.

The most common errors are:

Errno::ECONNREFUSED

Connection refused by host or an intervening firewall.

Errno::ETIMEDOUT

Connection timed out (possibly due to packets being dropped by an intervening firewall).

Errno::ENETUNREACH

There is no route to that network.

SocketError

Hostname not known or other socket error.

Net::IMAP::ByeResponseError

The connected to the host was successful, but it immediately said goodbye.

Calls superclass method MonitorMixin.new

Public Instance Methods

add_response_handler(handler = Proc.new) Show source
# File lib/net/imap.rb, line 901
def add_response_handler(handler = Proc.new)
  @response_handlers.push(handler)
end

Adds a response handler. For example, to detect when the server sends a new EXISTS response (which normally indicates new messages being added to the mailbox), add the following handler after selecting the mailbox:

imap.add_response_handler { |resp|
  if resp.kind_of?(Net::IMAP::UntaggedResponse) and resp.name == "EXISTS"
    puts "Mailbox now has #{resp.data} messages"
  end
}
append(mailbox, message, flags = nil, date_time = nil) Show source
# File lib/net/imap.rb, line 694
def append(mailbox, message, flags = nil, date_time = nil)
  args = []
  if flags
    args.push(flags)
  end
  args.push(date_time) if date_time
  args.push(Literal.new(message))
  send_command("APPEND", mailbox, *args)
end

Sends a APPEND command to append the message to the end of the mailbox. The optional flags argument is an array of flags initially passed to the new message. The optional date_time argument specifies the creation time to assign to the new message; it defaults to the current time. For example:

imap.append("inbox", "Subject: hello
From: [email protected]
To: [email protected]

hello world
".gsub(/\n/, "\r\n"), [:Seen], Time.now)

A Net::IMAP::NoResponseError is raised if the mailbox does not exist (it is not created automatically), or if the flags, date_time, or message arguments contain errors.

authenticate(auth_type, *args) Show source
# File lib/net/imap.rb, line 412
def authenticate(auth_type, *args)
  auth_type = auth_type.upcase
  unless @@authenticators.has_key?(auth_type)
    raise ArgumentError,
      format('unknown auth type - "%s"', auth_type)
  end
  authenticator = @@authenticators[auth_type].new(*args)
  send_command("AUTHENTICATE", auth_type) do |resp|
    if resp.instance_of?(ContinuationRequest)
      data = authenticator.process(resp.data.text.unpack("m")[0])
      s = [data].pack("m").gsub(/\n/, "")
      send_string_data(s)
      put_string(CRLF)
    end
  end
end

Sends an AUTHENTICATE command to authenticate the client. The auth_type parameter is a string that represents the authentication mechanism to be used. Currently Net::IMAP supports the authentication mechanisms:

LOGIN:: login using cleartext user and password.
CRAM-MD5:: login with cleartext user and encrypted password
           (see [RFC-2195] for a full description).  This
           mechanism requires that the server have the user's
           password stored in clear-text password.

For both of these mechanisms, there should be two args: username and (cleartext) password. A server may not support one or the other of these mechanisms; check capability() for a capability of the form “AUTH=LOGIN” or “AUTH=CRAM-MD5”.

Authentication is done using the appropriate authenticator object: see @@authenticators for more information on plugging in your own authenticator.

For example:

imap.authenticate('LOGIN', user, password)

A Net::IMAP::NoResponseError is raised if authentication fails.

capability() Show source
# File lib/net/imap.rb, line 354
def capability
  synchronize do
    send_command("CAPABILITY")
    return @responses.delete("CAPABILITY")[-1]
  end
end

Sends a CAPABILITY command, and returns an array of capabilities that the server supports. Each capability is a string. See [IMAP] for a list of possible capabilities.

Note that the Net::IMAP class does not modify its behaviour according to the capabilities of the server; it is up to the user of the class to ensure that a certain capability is supported by a server before using it.

check() Show source
# File lib/net/imap.rb, line 708
def check
  send_command("CHECK")
end

Sends a CHECK command to request a checkpoint of the currently selected mailbox. This performs implementation-specific housekeeping; for instance, reconciling the mailbox's in-memory and on-disk state.

close() Show source
# File lib/net/imap.rb, line 715
def close
  send_command("CLOSE")
end

Sends a CLOSE command to close the currently selected mailbox. The CLOSE command permanently removes from the mailbox all messages that have the Deleted flag set.

copy(set, mailbox) Show source
# File lib/net/imap.rb, line 848
def copy(set, mailbox)
  copy_internal("COPY", set, mailbox)
end

Sends a COPY command to copy the specified message(s) to the end of the specified destination mailbox. The set parameter is a number, an array of numbers, or a Range object. The number is a message sequence number.

create(mailbox) Show source
# File lib/net/imap.rb, line 475
def create(mailbox)
  send_command("CREATE", mailbox)
end

Sends a CREATE command to create a new mailbox.

A Net::IMAP::NoResponseError is raised if a mailbox with that name cannot be created.

delete(mailbox) Show source
# File lib/net/imap.rb, line 484
def delete(mailbox)
  send_command("DELETE", mailbox)
end

Sends a DELETE command to remove the mailbox.

A Net::IMAP::NoResponseError is raised if a mailbox with that name cannot be deleted, either because it does not exist or because the client does not have permission to delete it.

disconnect() Show source
# File lib/net/imap.rb, line 316
def disconnect
  begin
    begin
      # try to call SSL::SSLSocket#io.
      @sock.io.shutdown
    rescue NoMethodError
      # @sock is not an SSL::SSLSocket.
      @sock.shutdown
    end
  rescue Errno::ENOTCONN
    # ignore `Errno::ENOTCONN: Socket is not connected' on some platforms.
  rescue Exception => e
    @receiver_thread.raise(e)
  end
  @receiver_thread.join
  synchronize do
    unless @sock.closed?
      @sock.close
    end
  end
  raise e if e
end

Disconnects from the server.

disconnected?() Show source
# File lib/net/imap.rb, line 340
def disconnected?
  return @sock.closed?
end

Returns true if disconnected from the server.

examine(mailbox) Show source
# File lib/net/imap.rb, line 464
def examine(mailbox)
  synchronize do
    @responses.clear
    send_command("EXAMINE", mailbox)
  end
end

Sends a EXAMINE command to select a mailbox so that messages in the mailbox can be accessed. Behaves the same as select(), except that the selected mailbox is identified as read-only.

A Net::IMAP::NoResponseError is raised if the mailbox does not exist or is for some reason non-examinable.

expunge() Show source
# File lib/net/imap.rb, line 721
def expunge
  synchronize do
    send_command("EXPUNGE")
    return @responses.delete("EXPUNGE")
  end
end

Sends a EXPUNGE command to permanently remove from the currently selected mailbox all messages that have the Deleted flag set.

fetch(set, attr) Show source
# File lib/net/imap.rb, line 812
def fetch(set, attr)
  return fetch_internal("FETCH", set, attr)
end

Sends a FETCH command to retrieve data associated with a message in the mailbox.

The set parameter is a number or a range between two numbers, or an array of those. The number is a message sequence number, where -1 represents a '*' for use in range notation like 100..-1 being interpreted as '100:*'. Beware that the exclude_end? property of a Range object is ignored, and the contents of a range are independent of the order of the range endpoints as per the protocol specification, so 1…5, 5..1 and 5…1 are all equivalent to 1..5.

attr is a list of attributes to fetch; see the documentation for Net::IMAP::FetchData for a list of valid attributes.

The return value is an array of Net::IMAP::FetchData or nil (instead of an empty array) if there is no matching message.

For example:

p imap.fetch(6..8, "UID")
#=> [#<Net::IMAP::FetchData seqno=6, attr={"UID"=>98}>, \\
     #<Net::IMAP::FetchData seqno=7, attr={"UID"=>99}>, \\
     #<Net::IMAP::FetchData seqno=8, attr={"UID"=>100}>]
p imap.fetch(6, "BODY[HEADER.FIELDS (SUBJECT)]")
#=> [#<Net::IMAP::FetchData seqno=6, attr={"BODY[HEADER.FIELDS (SUBJECT)]"=>"Subject: test\r\n\r\n"}>]
data = imap.uid_fetch(98, ["RFC822.SIZE", "INTERNALDATE"])[0]
p data.seqno
#=> 6
p data.attr["RFC822.SIZE"]
#=> 611
p data.attr["INTERNALDATE"]
#=> "12-Oct-2000 22:40:59 +0900"
p data.attr["UID"]
#=> 98
getacl(mailbox) Show source
# File lib/net/imap.rb, line 634
def getacl(mailbox)
  synchronize do
    send_command("GETACL", mailbox)
    return @responses.delete("ACL")[-1]
  end
end

Send the GETACL command along with a specified mailbox. If this mailbox exists, an array containing objects of Net::IMAP::MailboxACLItem will be returned.

getquota(mailbox) Show source
# File lib/net/imap.rb, line 598
def getquota(mailbox)
  synchronize do
    send_command("GETQUOTA", mailbox)
    return @responses.delete("QUOTA")
  end
end

Sends the GETQUOTA command along with specified mailbox. If this mailbox exists, then an array containing a Net::IMAP::MailboxQuota object is returned. This command is generally only available to server admin.

getquotaroot(mailbox) Show source
# File lib/net/imap.rb, line 584
def getquotaroot(mailbox)
  synchronize do
    send_command("GETQUOTAROOT", mailbox)
    result = []
    result.concat(@responses.delete("QUOTAROOT"))
    result.concat(@responses.delete("QUOTA"))
    return result
  end
end

Sends the GETQUOTAROOT command along with the specified mailbox. This command is generally available to both admin and user. If this mailbox exists, it returns an array containing objects of type Net::IMAP::MailboxQuotaRoot and Net::IMAP::MailboxQuota.

idle(timeout = nil, &response_handler) Show source
# File lib/net/imap.rb, line 947
def idle(timeout = nil, &response_handler)
  raise LocalJumpError, "no block given" unless response_handler

  response = nil

  synchronize do
    tag = Thread.current[:net_imap_tag] = generate_tag
    put_string("#{tag} IDLE#{CRLF}")

    begin
      add_response_handler(response_handler)
      @idle_done_cond = new_cond
      @idle_done_cond.wait(timeout)
      @idle_done_cond = nil
      if @receiver_thread_terminating
        raise Net::IMAP::Error, "connection closed"
      end
    ensure
      unless @receiver_thread_terminating
        remove_response_handler(response_handler)
        put_string("DONE#{CRLF}")
        response = get_tagged_response(tag, "IDLE")
      end
    end
  end

  return response
end

Sends an IDLE command that waits for notifications of new or expunged messages. Yields responses from the server during the IDLE.

Use idle_done() to leave IDLE.

If timeout is given, this method returns after timeout seconds passed. timeout can be used for keep-alive. For example, the following code checks the connection for each 60 seconds.

loop do
  imap.idle(60) do |res|
    ...
  end
end
idle_done() Show source
# File lib/net/imap.rb, line 977
def idle_done
  synchronize do
    if @idle_done_cond.nil?
      raise Net::IMAP::Error, "not during IDLE"
    end
    @idle_done_cond.signal
  end
end

Leaves IDLE.

list(refname, mailbox) Show source
# File lib/net/imap.rb, line 541
def list(refname, mailbox)
  synchronize do
    send_command("LIST", refname, mailbox)
    return @responses.delete("LIST")
  end
end

Sends a LIST command, and returns a subset of names from the complete set of all names available to the client. refname provides a context (for instance, a base directory in a directory-based mailbox hierarchy). mailbox specifies a mailbox or (via wildcards) mailboxes under that context. Two wildcards may be used in mailbox: '*', which matches all characters including the hierarchy delimiter (for instance, '/' on a UNIX-hosted directory-based mailbox hierarchy); and '%', which matches all characters except the hierarchy delimiter.

If refname is empty, mailbox is used directly to determine which mailboxes to match. If mailbox is empty, the root name of refname and the hierarchy delimiter are returned.

The return value is an array of Net::IMAP::MailboxList. For example:

imap.create("foo/bar")
imap.create("foo/baz")
p imap.list("", "foo/%")
#=> [#<Net::IMAP::MailboxList attr=[:Noselect], delim="/", name="foo/">, \\
     #<Net::IMAP::MailboxList attr=[:Noinferiors, :Marked], delim="/", name="foo/bar">, \\
     #<Net::IMAP::MailboxList attr=[:Noinferiors], delim="/", name="foo/baz">]
login(user, password) Show source
# File lib/net/imap.rb, line 435
def login(user, password)
  send_command("LOGIN", user, password)
end

Sends a LOGIN command to identify the client and carries the plaintext password authenticating this user. Note that, unlike calling authenticate() with an auth_type of “LOGIN”, login() does not use the login authenticator.

A Net::IMAP::NoResponseError is raised if authentication fails.

logout() Show source
# File lib/net/imap.rb, line 368
def logout
  send_command("LOGOUT")
end

Sends a LOGOUT command to inform the server that the client is done with the connection.

lsub(refname, mailbox) Show source
# File lib/net/imap.rb, line 646
def lsub(refname, mailbox)
  synchronize do
    send_command("LSUB", refname, mailbox)
    return @responses.delete("LSUB")
  end
end

Sends a LSUB command, and returns a subset of names from the set of names that the user has declared as being “active” or “subscribed.” refname and mailbox are interpreted as for list(). The return value is an array of Net::IMAP::MailboxList.

move(set, mailbox) Show source
# File lib/net/imap.rb, line 862
def move(set, mailbox)
  copy_internal("MOVE", set, mailbox)
end

Sends a MOVE command to move the specified message(s) to the end of the specified destination mailbox. The set parameter is a number, an array of numbers, or a Range object. The number is a message sequence number. The IMAP MOVE extension is described in [RFC-6851].

noop() Show source
# File lib/net/imap.rb, line 362
def noop
  send_command("NOOP")
end

Sends a NOOP command to the server. It does nothing.

remove_response_handler(handler) Show source
# File lib/net/imap.rb, line 906
def remove_response_handler(handler)
  @response_handlers.delete(handler)
end

Removes the response handler.

rename(mailbox, newname) Show source
# File lib/net/imap.rb, line 495
def rename(mailbox, newname)
  send_command("RENAME", mailbox, newname)
end

Sends a RENAME command to change the name of the mailbox to newname.

A Net::IMAP::NoResponseError is raised if a mailbox with the name mailbox cannot be renamed to newname for whatever reason; for instance, because mailbox does not exist, or because there is already a mailbox with the name newname.

# File lib/net/imap.rb, line 768
def search(keys, charset = nil)
  return search_internal("SEARCH", keys, charset)
end

Sends a SEARCH command to search the mailbox for messages that match the given searching criteria, and returns message sequence numbers. keys can either be a string holding the entire search string, or a single-dimension array of search keywords and arguments. The following are some common search criteria; see [IMAP] section 6.4.4 for a full list.

<message set>

a set of message sequence numbers. ',' indicates an interval, ':' indicates a range. For instance, '2,10:12,15' means “2,10,11,12,15”.

BEFORE <date>

messages with an internal date strictly before <date>. The date argument has a format similar to 8-Aug-2002.

BODY <string>

messages that contain <string> within their body.

CC <string>

messages containing <string> in their CC field.

FROM <string>

messages that contain <string> in their FROM field.

NEW

messages with the Recent, but not the Seen, flag set.

NOT <search-key>

negate the following search key.

OR <search-key> <search-key>

“or” two search keys together.

ON <date>

messages with an internal date exactly equal to <date>, which has a format similar to 8-Aug-2002.

SINCE <date>

messages with an internal date on or after <date>.

SUBJECT <string>

messages with <string> in their subject.

TO <string>

messages with <string> in their TO field.

For example:

p imap.search(["SUBJECT", "hello", "NOT", "NEW"])
#=> [1, 6, 7, 8]
select(mailbox) Show source
# File lib/net/imap.rb, line 451
def select(mailbox)
  synchronize do
    @responses.clear
    send_command("SELECT", mailbox)
  end
end

Sends a SELECT command to select a mailbox so that messages in the mailbox can be accessed.

After you have selected a mailbox, you may retrieve the number of items in that mailbox from @responses[-1], and the number of recent messages from @responses[-1]. Note that these values can change if new messages arrive during a session; see add_response_handler() for a way of detecting this event.

A Net::IMAP::NoResponseError is raised if the mailbox does not exist or is for some reason non-selectable.

setacl(mailbox, user, rights) Show source
# File lib/net/imap.rb, line 623
def setacl(mailbox, user, rights)
  if rights.nil?
    send_command("SETACL", mailbox, user, "")
  else
    send_command("SETACL", mailbox, user, rights)
  end
end

Sends the SETACL command along with mailbox, user and the rights that user is to have on that mailbox. If rights is nil, then that user will be stripped of any rights to that mailbox. The IMAP ACL commands are described in [RFC-2086].

setquota(mailbox, quota) Show source
# File lib/net/imap.rb, line 610
def setquota(mailbox, quota)
  if quota.nil?
    data = '()'
  else
    data = '(STORAGE ' + quota.to_s + ')'
  end
  send_command("SETQUOTA", mailbox, RawData.new(data))
end

Sends a SETQUOTA command along with the specified mailbox and quota. If quota is nil, then quota will be unset for that mailbox. Typically one needs to be logged in as a server admin for this to work. The IMAP quota commands are described in [RFC-2087].

sort(sort_keys, search_keys, charset) Show source
# File lib/net/imap.rb, line 880
def sort(sort_keys, search_keys, charset)
  return sort_internal("SORT", sort_keys, search_keys, charset)
end

Sends a SORT command to sort messages in the mailbox. Returns an array of message sequence numbers. For example:

p imap.sort(["FROM"], ["ALL"], "US-ASCII")
#=> [1, 2, 3, 5, 6, 7, 8, 4, 9]
p imap.sort(["DATE"], ["SUBJECT", "hello"], "US-ASCII")
#=> [6, 7, 8, 1]

See [SORT-THREAD-EXT] for more details.

starttls(options = {}, verify = true) Show source
# File lib/net/imap.rb, line 373
def starttls(options = {}, verify = true)
  send_command("STARTTLS") do |resp|
    if resp.kind_of?(TaggedResponse) && resp.name == "OK"
      begin
        # for backward compatibility
        certs = options.to_str
        options = create_ssl_params(certs, verify)
      rescue NoMethodError
      end
      start_tls_session(options)
    end
  end
end

Sends a STARTTLS command to start TLS session.

status(mailbox, attr) Show source
# File lib/net/imap.rb, line 669
def status(mailbox, attr)
  synchronize do
    send_command("STATUS", mailbox, attr)
    return @responses.delete("STATUS")[-1].attr
  end
end

Sends a STATUS command, and returns the status of the indicated mailbox. attr is a list of one or more attributes whose statuses are to be requested. Supported attributes include:

MESSAGES:: the number of messages in the mailbox.
RECENT:: the number of recent messages in the mailbox.
UNSEEN:: the number of unseen messages in the mailbox.

The return value is a hash of attributes. For example:

p imap.status("inbox", ["MESSAGES", "RECENT"])
#=> {"RECENT"=>0, "MESSAGES"=>44}

A Net::IMAP::NoResponseError is raised if status values for mailbox cannot be returned; for instance, because it does not exist.

store(set, attr, flags) Show source
# File lib/net/imap.rb, line 835
def store(set, attr, flags)
  return store_internal("STORE", set, attr, flags)
end

Sends a STORE command to alter data associated with messages in the mailbox, in particular their flags. The set parameter is a number, an array of numbers, or a Range object. Each number is a message sequence number. attr is the name of a data item to store: 'FLAGS' will replace the message's flag list with the provided one, '+FLAGS' will add the provided flags, and '-FLAGS' will remove them. flags is a list of flags.

The return value is an array of Net::IMAP::FetchData. For example:

p imap.store(6..8, "+FLAGS", [:Deleted])
#=> [#<Net::IMAP::FetchData seqno=6, attr={"FLAGS"=>[:Seen, :Deleted]}>, \\
     #<Net::IMAP::FetchData seqno=7, attr={"FLAGS"=>[:Seen, :Deleted]}>, \\
     #<Net::IMAP::FetchData seqno=8, attr={"FLAGS"=>[:Seen, :Deleted]}>]
subscribe(mailbox) Show source
# File lib/net/imap.rb, line 505
def subscribe(mailbox)
  send_command("SUBSCRIBE", mailbox)
end

Sends a SUBSCRIBE command to add the specified mailbox name to the server's set of “active” or “subscribed” mailboxes as returned by lsub().

A Net::IMAP::NoResponseError is raised if mailbox cannot be subscribed to; for instance, because it does not exist.

thread(algorithm, search_keys, charset) Show source
# File lib/net/imap.rb, line 923
def thread(algorithm, search_keys, charset)
  return thread_internal("THREAD", algorithm, search_keys, charset)
end

Similar to search(), but returns message sequence numbers in threaded format, as a Net::IMAP::ThreadMember tree. The supported algorithms are:

ORDEREDSUBJECT

split into single-level threads according to subject, ordered by date.

REFERENCES

split into threads by parent/child relationships determined by which message is a reply to which.

Unlike search(), charset is a required argument. US-ASCII and UTF-8 are sample values.

See [SORT-THREAD-EXT] for more details.

uid_copy(set, mailbox) Show source
# File lib/net/imap.rb, line 853
def uid_copy(set, mailbox)
  copy_internal("UID COPY", set, mailbox)
end

Similar to copy(), but set contains unique identifiers.

uid_fetch(set, attr) Show source
# File lib/net/imap.rb, line 817
def uid_fetch(set, attr)
  return fetch_internal("UID FETCH", set, attr)
end

Similar to fetch(), but set contains unique identifiers.

uid_move(set, mailbox) Show source
# File lib/net/imap.rb, line 867
def uid_move(set, mailbox)
  copy_internal("UID MOVE", set, mailbox)
end

Similar to move(), but set contains unique identifiers.

# File lib/net/imap.rb, line 773
def uid_search(keys, charset = nil)
  return search_internal("UID SEARCH", keys, charset)
end

Similar to search(), but returns unique identifiers.

uid_sort(sort_keys, search_keys, charset) Show source
# File lib/net/imap.rb, line 885
def uid_sort(sort_keys, search_keys, charset)
  return sort_internal("UID SORT", sort_keys, search_keys, charset)
end

Similar to sort(), but returns an array of unique identifiers.

uid_store(set, attr, flags) Show source
# File lib/net/imap.rb, line 840
def uid_store(set, attr, flags)
  return store_internal("UID STORE", set, attr, flags)
end

Similar to store(), but set contains unique identifiers.

uid_thread(algorithm, search_keys, charset) Show source
# File lib/net/imap.rb, line 929
def uid_thread(algorithm, search_keys, charset)
  return thread_internal("UID THREAD", algorithm, search_keys, charset)
end

Similar to thread(), but returns unique identifiers instead of message sequence numbers.

unsubscribe(mailbox) Show source
# File lib/net/imap.rb, line 515
def unsubscribe(mailbox)
  send_command("UNSUBSCRIBE", mailbox)
end

Sends a UNSUBSCRIBE command to remove the specified mailbox name from the server's set of “active” or “subscribed” mailboxes.

A Net::IMAP::NoResponseError is raised if mailbox cannot be unsubscribed from; for instance, because the client is not currently subscribed to it.

xlist(refname, mailbox) Show source
# File lib/net/imap.rb, line 573
def xlist(refname, mailbox)
  synchronize do
    send_command("XLIST", refname, mailbox)
    return @responses.delete("XLIST")
  end
end

Sends a XLIST command, and returns a subset of names from the complete set of all names available to the client. refname provides a context (for instance, a base directory in a directory-based mailbox hierarchy). mailbox specifies a mailbox or (via wildcards) mailboxes under that context. Two wildcards may be used in mailbox: '*', which matches all characters including the hierarchy delimiter (for instance, '/' on a UNIX-hosted directory-based mailbox hierarchy); and '%', which matches all characters except the hierarchy delimiter.

If refname is empty, mailbox is used directly to determine which mailboxes to match. If mailbox is empty, the root name of refname and the hierarchy delimiter are returned.

The XLIST command is like the LIST command except that the flags returned refer to the function of the folder/mailbox, e.g. :Sent

The return value is an array of Net::IMAP::MailboxList. For example:

imap.create("foo/bar")
imap.create("foo/baz")
p imap.xlist("", "foo/%")
#=> [#<Net::IMAP::MailboxList attr=[:Noselect], delim="/", name="foo/">, \\
     #<Net::IMAP::MailboxList attr=[:Noinferiors, :Marked], delim="/", name="foo/bar">, \\
     #<Net::IMAP::MailboxList attr=[:Noinferiors], delim="/", name="foo/baz">]

Private Instance Methods

copy_internal(cmd, set, mailbox) Show source
# File lib/net/imap.rb, line 1417
def copy_internal(cmd, set, mailbox)
  send_command(cmd, MessageSet.new(set), mailbox)
end
create_ssl_params(certs = nil, verify = true) Show source
# File lib/net/imap.rb, line 1456
def create_ssl_params(certs = nil, verify = true)
  params = {}
  if certs
    if File.file?(certs)
      params[:ca_file] = certs
    elsif File.directory?(certs)
      params[:ca_path] = certs
    end
  end
  if verify
    params[:verify_mode] = VERIFY_PEER
  else
    params[:verify_mode] = VERIFY_NONE
  end
  return params
end
fetch_internal(cmd, set, attr) Show source
# File lib/net/imap.rb, line 1389
def fetch_internal(cmd, set, attr)
  case attr
  when String then
    attr = RawData.new(attr)
  when Array then
    attr = attr.map { |arg|
      arg.is_a?(String) ? RawData.new(arg) : arg
    }
  end

  synchronize do
    @responses.delete("FETCH")
    send_command(cmd, MessageSet.new(set), attr)
    return @responses.delete("FETCH")
  end
end
generate_tag() Show source
# File lib/net/imap.rb, line 1259
def generate_tag
  @tagno += 1
  return format("%s%04d", @tag_prefix, @tagno)
end
get_response() Show source
# File lib/net/imap.rb, line 1204
def get_response
  buff = String.new
  while true
    s = @sock.gets(CRLF)
    break unless s
    buff.concat(s)
    if /\{(\d+)\}\r\n/n =~ s
      s = @sock.read($1.to_i)
      buff.concat(s)
    else
      break
    end
  end
  return nil if buff.length == 0
  if @@debug
    $stderr.print(buff.gsub(/^/n, "S: "))
  end
  return @parser.parse(buff)
end
get_tagged_response(tag, cmd) Show source
# File lib/net/imap.rb, line 1188
def get_tagged_response(tag, cmd)
  until @tagged_responses.key?(tag)
    raise @exception if @exception
    @tagged_response_arrival.wait
  end
  resp = @tagged_responses.delete(tag)
  case resp.name
  when /\A(?:NO)\z/ni
    raise NoResponseError, resp
  when /\A(?:BAD)\z/ni
    raise BadResponseError, resp
  else
    return resp
  end
end
normalize_searching_criteria(keys) Show source
# File lib/net/imap.rb, line 1445
def normalize_searching_criteria(keys)
  keys.collect! do |i|
    case i
    when -1, Range, Array
      MessageSet.new(i)
    else
      i
    end
  end
end
put_string(str) Show source
# File lib/net/imap.rb, line 1264
def put_string(str)
  @sock.print(str)
  if @@debug
    if @debug_output_bol
      $stderr.print("C: ")
    end
    $stderr.print(str.gsub(/\n(?!\z)/n, "\nC: "))
    if /\r\n\z/n.match(str)
      @debug_output_bol = true
    else
      @debug_output_bol = false
    end
  end
end
receive_responses() Show source
# File lib/net/imap.rb, line 1122
def receive_responses
  connection_closed = false
  until connection_closed
    synchronize do
      @exception = nil
    end
    begin
      resp = get_response
    rescue Exception => e
      synchronize do
        @sock.close
        @exception = e
      end
      break
    end
    unless resp
      synchronize do
        @exception = EOFError.new("end of file reached")
      end
      break
    end
    begin
      synchronize do
        case resp
        when TaggedResponse
          @tagged_responses[resp.tag] = resp
          @tagged_response_arrival.broadcast
          if resp.tag == @logout_command_tag
            return
          end
        when UntaggedResponse
          record_response(resp.name, resp.data)
          if resp.data.instance_of?(ResponseText) &&
              (code = resp.data.code)
            record_response(code.name, code.data)
          end
          if resp.name == "BYE" && @logout_command_tag.nil?
            @sock.close
            @exception = ByeResponseError.new(resp)
            connection_closed = true
          end
        when ContinuationRequest
          @continuation_request_arrival.signal
        end
        @response_handlers.each do |handler|
          handler.call(resp)
        end
      end
    rescue Exception => e
      @exception = e
      synchronize do
        @tagged_response_arrival.broadcast
        @continuation_request_arrival.broadcast
      end
    end
  end
  synchronize do
    @receiver_thread_terminating = true
    @tagged_response_arrival.broadcast
    @continuation_request_arrival.broadcast
    if @idle_done_cond
      @idle_done_cond.signal
    end
  end
end
record_response(name, data) Show source
# File lib/net/imap.rb, line 1224
def record_response(name, data)
  unless @responses.has_key?(name)
    @responses[name] = []
  end
  @responses[name].push(data)
end
search_internal(cmd, keys, charset) Show source
# File lib/net/imap.rb, line 1373
def search_internal(cmd, keys, charset)
  if keys.instance_of?(String)
    keys = [RawData.new(keys)]
  else
    normalize_searching_criteria(keys)
  end
  synchronize do
    if charset
      send_command(cmd, "CHARSET", charset, *keys)
    else
      send_command(cmd, *keys)
    end
    return @responses.delete("SEARCH")[-1]
  end
end
send_command(cmd, *args, &block) Show source
# File lib/net/imap.rb, line 1231
def send_command(cmd, *args, &block)
  synchronize do
    args.each do |i|
      validate_data(i)
    end
    tag = generate_tag
    put_string(tag + " " + cmd)
    args.each do |i|
      put_string(" ")
      send_data(i)
    end
    put_string(CRLF)
    if cmd == "LOGOUT"
      @logout_command_tag = tag
    end
    if block
      add_response_handler(block)
    end
    begin
      return get_tagged_response(tag, cmd)
    ensure
      if block
        remove_response_handler(block)
      end
    end
  end
end
send_data(data) Show source
# File lib/net/imap.rb, line 1296
def send_data(data)
  case data
  when nil
    put_string("NIL")
  when String
    send_string_data(data)
  when Integer
    send_number_data(data)
  when Array
    send_list_data(data)
  when Time
    send_time_data(data)
  when Symbol
    send_symbol_data(data)
  else
    data.send_data(self)
  end
end
send_list_data(list) Show source
# File lib/net/imap.rb, line 1345
def send_list_data(list)
  put_string("(")
  first = true
  list.each do |i|
    if first
      first = false
    else
      put_string(" ")
    end
    send_data(i)
  end
  put_string(")")
end
send_literal(str) Show source
# File lib/net/imap.rb, line 1334
def send_literal(str)
  put_string("{" + str.bytesize.to_s + "}" + CRLF)
  @continuation_request_arrival.wait
  raise @exception if @exception
  put_string(str)
end
send_number_data(num) Show source
# File lib/net/imap.rb, line 1341
def send_number_data(num)
  put_string(num.to_s)
end
send_quoted_string(str) Show source
# File lib/net/imap.rb, line 1330
def send_quoted_string(str)
  put_string('"' + str.gsub(/["\]/n, "\\\\\\&") + '"')
end
send_string_data(str) Show source
# File lib/net/imap.rb, line 1315
def send_string_data(str)
  case str
  when ""
    put_string('""')
  when /[\x80-\xff\r\n]/n
    # literal
    send_literal(str)
  when /[(){ \x00-\x1f\x7f%*"\]/n
    # quoted string
    send_quoted_string(str)
  else
    put_string(str)
  end
end
send_symbol_data(symbol) Show source
# File lib/net/imap.rb, line 1369
def send_symbol_data(symbol)
  put_string("\\" + symbol.to_s)
end
send_time_data(time) Show source
# File lib/net/imap.rb, line 1361
def send_time_data(time)
  t = time.dup.gmtime
  s = format('"%2d-%3s-%4d %02d:%02d:%02d +0000"',
             t.day, DATE_MONTH[t.month - 1], t.year,
             t.hour, t.min, t.sec)
  put_string(s)
end
sort_internal(cmd, sort_keys, search_keys, charset) Show source
# File lib/net/imap.rb, line 1421
def sort_internal(cmd, sort_keys, search_keys, charset)
  if search_keys.instance_of?(String)
    search_keys = [RawData.new(search_keys)]
  else
    normalize_searching_criteria(search_keys)
  end
  normalize_searching_criteria(search_keys)
  synchronize do
    send_command(cmd, sort_keys, charset, *search_keys)
    return @responses.delete("SORT")[-1]
  end
end
start_tls_session(params = {}) Show source
# File lib/net/imap.rb, line 1473
def start_tls_session(params = {})
  unless defined?(OpenSSL::SSL)
    raise "SSL extension not installed"
  end
  if @sock.kind_of?(OpenSSL::SSL::SSLSocket)
    raise RuntimeError, "already using SSL"
  end
  begin
    params = params.to_hash
  rescue NoMethodError
    params = {}
  end
  context = SSLContext.new
  context.set_params(params)
  if defined?(VerifyCallbackProc)
    context.verify_callback = VerifyCallbackProc
  end
  @sock = SSLSocket.new(@sock, context)
  @sock.sync_close = true
  @sock.connect
  if context.verify_mode != VERIFY_NONE
    @sock.post_connection_check(@host)
  end
end
store_internal(cmd, set, attr, flags) Show source
# File lib/net/imap.rb, line 1406
def store_internal(cmd, set, attr, flags)
  if attr.instance_of?(String)
    attr = RawData.new(attr)
  end
  synchronize do
    @responses.delete("FETCH")
    send_command(cmd, MessageSet.new(set), attr, flags)
    return @responses.delete("FETCH")
  end
end
thread_internal(cmd, algorithm, search_keys, charset) Show source
# File lib/net/imap.rb, line 1434
def thread_internal(cmd, algorithm, search_keys, charset)
  if search_keys.instance_of?(String)
    search_keys = [RawData.new(search_keys)]
  else
    normalize_searching_criteria(search_keys)
  end
  normalize_searching_criteria(search_keys)
  send_command(cmd, algorithm, charset, *search_keys)
  return @responses.delete("THREAD")[-1]
end
validate_data(data) Show source
# File lib/net/imap.rb, line 1279
def validate_data(data)
  case data
  when nil
  when String
  when Integer
    NumValidator.ensure_number(data)
  when Array
    data.each do |i|
      validate_data(i)
    end
  when Time
  when Symbol
  else
    data.validate
  end
end

Ruby Core © 1993–2017 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.