| Class | Net::IMAP |
| In: |
lib/net/imap.rb
|
| Parent: | Object |
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality. The protocol is described in [IMAP].
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 a 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 mail box from 1 up to the number of items in the mail box. If new message arrives during a session, it receives a sequence number equal to the new size of the mail box. 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 cannot thus rearrange message orders.
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
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
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.
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 exists; 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 our 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.
| SEEN | = | :Seen | Flag indicating a message has been seen | |||||||||||||||||||||
| ANSWERED | = | :Answered | Flag indicating a message has been answered | |||||||||||||||||||||
| FLAGGED | = | :Flagged | Flag indicating a message has been flagged for special or urgent attention | |||||||||||||||||||||
| DELETED | = | :Deleted | Flag indicating a message has been marked for deletion. This will occur when the mailbox is closed or expunged. | |||||||||||||||||||||
| DRAFT | = | :Draft | Flag indicating a message is only a draft or work-in-progress version. | |||||||||||||||||||||
| RECENT | = | :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. | |||||||||||||||||||||
| NOINFERIORS | = | :Noinferiors | Flag indicating that a mailbox context name cannot contain children. | |||||||||||||||||||||
| NOSELECT | = | :Noselect | Flag indicating that a mailbox is not selected. | |||||||||||||||||||||
| MARKED | = | :Marked | Flag indicating that a mailbox has been marked "interesting" by the server; this commonly indicates that the mailbox contains new messages. | |||||||||||||||||||||
| UNMARKED | = | :Unmarked | Flag indicating that the mailbox does not contains new messages. | |||||||||||||||||||||
| DATE_MONTH | = | %w(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec) | ||||||||||||||||||||||
| ContinuationRequest | = | Struct.new(:data, :raw_data) |
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:
|
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| UntaggedResponse | = | Struct.new(:name, :data, :raw_data) |
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:
|
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| TaggedResponse | = | Struct.new(:tag, :name, :data, :raw_data) |
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:
|
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| ResponseText | = | Struct.new(:code, :text) |
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:
|
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| ResponseCode | = | Struct.new(:name, :data) |
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:
|
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| MailboxList | = | Struct.new(:attr, :delim, :name) |
Net::IMAP::MailboxList represents contents of the LIST response.
mailbox_list ::= "(" #("\Marked" / "\Noinferiors" /
"\Noselect" / "\Unmarked" / flag_extension) ")"
SPACE (<"> QUOTED_CHAR <"> / nil) SPACE mailbox
Fields:
|
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| MailboxQuota | = | Struct.new(:mailbox, :usage, :quota) |
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:
|
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| MailboxQuotaRoot | = | Struct.new(:mailbox, :quotaroots) |
Net::IMAP::MailboxQuotaRoot represents part of the GETQUOTAROOT response.
(GETQUOTAROOT can also return Net::IMAP::MailboxQuota.)
quotaroot_response ::= "QUOTAROOT" SPACE astring *(SPACE astring) Fields:
|
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| MailboxACLItem | = | Struct.new(:user, :rights) |
Net::IMAP::MailboxACLItem represents response from GETACL.
acl_data ::= "ACL" SPACE mailbox *(SPACE identifier SPACE rights) identifier ::= astring rights ::= astring Fields:
|
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| StatusData | = | Struct.new(:mailbox, :attr) |
Net::IMAP::StatusData represents contents of the STATUS response.
Fields:
|
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| FetchData | = | Struct.new(:seqno, :attr) |
Net::IMAP::FetchData represents contents of the FETCH response.
Fields:
|
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| Envelope | = | Struct.new(:date, :subject, :from, :sender, :reply_to, :to, :cc, :bcc, :in_reply_to, :message_id) |
Net::IMAP::Envelope represents envelope structures of messages.
Fields:
|
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| Address | = | Struct.new(:name, :route, :mailbox, :host) |
Net::IMAP::Address represents electronic mail addresses.
Fields:
|
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| ContentDisposition | = | Struct.new(:dsp_type, :param) |
Net::IMAP::ContentDisposition represents Content-Disposition fields.
Fields:
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| ThreadMember | = | Struct.new(:seqno, :children) |
Net::IMAP::ThreadMember represents a thread-node returned by Net::IMAP#thread
Fields:
items that are children of this in the thread. |
| 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
|
Adds an authenticator for Net::IMAP#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 and Net::IMAP::CramMD5Authenticator for examples.
If auth_type refers to an existing authenticator, it will be replaced by the new one.
# File lib/net/imap.rb, line 281
281: def self.add_authenticator(auth_type, authenticator)
282: @@authenticators[auth_type] = authenticator
283: 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 utf7.
# File lib/net/imap.rb, line 821
821: def self.decode_utf7(s)
822: return s.gsub(/&(.*?)-/n) {
823: if $1.empty?
824: "&"
825: else
826: base64 = $1.tr(",", "/")
827: x = base64.length % 4
828: if x > 0
829: base64.concat("=" * (4 - x))
830: end
831: u16tou8(base64.unpack("m")[0])
832: end
833: }
834: end
Encode a string from UTF-8 format to modified UTF-7.
# File lib/net/imap.rb, line 837
837: def self.encode_utf7(s)
838: return s.gsub(/(&)|([^\x20-\x25\x27-\x7e]+)/n) { |x|
839: if $1
840: "&-"
841: else
842: base64 = [u8tou16(x)].pack("m")
843: "&" + base64.delete("=\n").tr("/", ",") + "-"
844: end
845: }
846: end
Creates a new Net::IMAP object and connects it to the specified port (143 by default) on the named host. If usessl 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. The certs parameter indicates the path or file containing the CA cert of the server, and the verify parameter is for the OpenSSL verification callback.
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: | we connected to the host, but they immediately said goodbye to us. |
# File lib/net/imap.rb, line 875
875: def initialize(host, port = PORT, usessl = false, certs = nil, verify = false)
876: super()
877: @host = host
878: @port = port
879: @tag_prefix = "RUBY"
880: @tagno = 0
881: @parser = ResponseParser.new
882: @sock = TCPSocket.open(host, port)
883: if usessl
884: unless defined?(OpenSSL)
885: raise "SSL extension not installed"
886: end
887: @usessl = true
888:
889: # verify the server.
890: context = SSLContext::new()
891: context.ca_file = certs if certs && FileTest::file?(certs)
892: context.ca_path = certs if certs && FileTest::directory?(certs)
893: context.verify_mode = VERIFY_PEER if verify
894: if defined?(VerifyCallbackProc)
895: context.verify_callback = VerifyCallbackProc
896: end
897: @sock = SSLSocket.new(@sock, context)
898: @sock.connect # start ssl session.
899: @sock.post_connection_check(@host) if verify
900: else
901: @usessl = false
902: end
903: @responses = Hash.new([].freeze)
904: @tagged_responses = {}
905: @response_handlers = []
906: @tagged_response_arrival = new_cond
907: @continuation_request_arrival = new_cond
908: @logout_command_tag = nil
909: @debug_output_bol = true
910:
911: @greeting = get_response
912: if @greeting.name == "BYE"
913: @sock.close
914: raise ByeResponseError, @greeting.raw_data
915: end
916:
917: @client_thread = Thread.current
918: @receiver_thread = Thread.start {
919: receive_responses
920: }
921: end
# File lib/net/imap.rb, line 1208
1208: def self.u16tou8(s)
1209: len = s.length
1210: if len < 2
1211: return ""
1212: end
1213: buf = ""
1214: i = 0
1215: while i < len
1216: c = s[i] << 8 | s[i + 1]
1217: i += 2
1218: if c == 0xfeff
1219: next
1220: elsif c < 0x0080
1221: buf.concat(c)
1222: elsif c < 0x0800
1223: b2 = c & 0x003f
1224: b1 = c >> 6
1225: buf.concat(b1 | 0xc0)
1226: buf.concat(b2 | 0x80)
1227: elsif c >= 0xdc00 && c < 0xe000
1228: raise DataFormatError, "invalid surrogate detected"
1229: elsif c >= 0xd800 && c < 0xdc00
1230: if i + 2 > len
1231: raise DataFormatError, "invalid surrogate detected"
1232: end
1233: low = s[i] << 8 | s[i + 1]
1234: i += 2
1235: if low < 0xdc00 || low > 0xdfff
1236: raise DataFormatError, "invalid surrogate detected"
1237: end
1238: c = (((c & 0x03ff)) << 10 | (low & 0x03ff)) + 0x10000
1239: b4 = c & 0x003f
1240: b3 = (c >> 6) & 0x003f
1241: b2 = (c >> 12) & 0x003f
1242: b1 = c >> 18;
1243: buf.concat(b1 | 0xf0)
1244: buf.concat(b2 | 0x80)
1245: buf.concat(b3 | 0x80)
1246: buf.concat(b4 | 0x80)
1247: else # 0x0800-0xffff
1248: b3 = c & 0x003f
1249: b2 = (c >> 6) & 0x003f
1250: b1 = c >> 12
1251: buf.concat(b1 | 0xe0)
1252: buf.concat(b2 | 0x80)
1253: buf.concat(b3 | 0x80)
1254: end
1255: end
1256: return buf
1257: end
# File lib/net/imap.rb, line 1260
1260: def self.u8tou16(s)
1261: len = s.length
1262: buf = ""
1263: i = 0
1264: while i < len
1265: c = s[i]
1266: if (c & 0x80) == 0
1267: buf.concat(0x00)
1268: buf.concat(c)
1269: i += 1
1270: elsif (c & 0xe0) == 0xc0 &&
1271: len >= 2 &&
1272: (s[i + 1] & 0xc0) == 0x80
1273: if c == 0xc0 || c == 0xc1
1274: raise DataFormatError, format("non-shortest UTF-8 sequence (%02x)", c)
1275: end
1276: u = ((c & 0x1f) << 6) | (s[i + 1] & 0x3f)
1277: buf.concat(u >> 8)
1278: buf.concat(u & 0x00ff)
1279: i += 2
1280: elsif (c & 0xf0) == 0xe0 &&
1281: i + 2 < len &&
1282: (s[i + 1] & 0xc0) == 0x80 &&
1283: (s[i + 2] & 0xc0) == 0x80
1284: if c == 0xe0 && s[i + 1] < 0xa0
1285: raise DataFormatError, format("non-shortest UTF-8 sequence (%02x)", c)
1286: end
1287: u = ((c & 0x0f) << 12) | ((s[i + 1] & 0x3f) << 6) | (s[i + 2] & 0x3f)
1288: # surrogate chars
1289: if u >= 0xd800 && u <= 0xdfff
1290: raise DataFormatError, format("none-UTF-16 char detected (%04x)", u)
1291: end
1292: buf.concat(u >> 8)
1293: buf.concat(u & 0x00ff)
1294: i += 3
1295: elsif (c & 0xf8) == 0xf0 &&
1296: i + 3 < len &&
1297: (s[i + 1] & 0xc0) == 0x80 &&
1298: (s[i + 2] & 0xc0) == 0x80 &&
1299: (s[i + 3] & 0xc0) == 0x80
1300: if c == 0xf0 && s[i + 1] < 0x90
1301: raise DataFormatError, format("non-shortest UTF-8 sequence (%02x)", c)
1302: end
1303: u = ((c & 0x07) << 18) | ((s[i + 1] & 0x3f) << 12) |
1304: ((s[i + 2] & 0x3f) << 6) | (s[i + 3] & 0x3f)
1305: if u < 0x10000
1306: buf.concat(u >> 8)
1307: buf.concat(u & 0x00ff)
1308: elsif u < 0x110000
1309: high = ((u - 0x10000) >> 10) | 0xd800
1310: low = (u & 0x03ff) | 0xdc00
1311: buf.concat(high >> 8)
1312: buf.concat(high & 0x00ff)
1313: buf.concat(low >> 8)
1314: buf.concat(low & 0x00ff)
1315: else
1316: raise DataFormatError, format("none-UTF-16 char detected (%04x)", u)
1317: end
1318: i += 4
1319: else
1320: raise DataFormatError, format("illegal UTF-8 sequence (%02x)", c)
1321: end
1322: end
1323: return buf
1324: end
Adds a response handler. For example, to detect when the server sends us a new EXISTS response (which normally indicates new messages being added to the mail box), you could 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
}
# File lib/net/imap.rb, line 781
781: def add_response_handler(handler = Proc.new)
782: @response_handlers.push(handler)
783: end
Sends a APPEND command to append the message to the end of the mailbox. The optional flags argument is an array of flags to initially passing 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", <<EOF.gsub(/\n/, "\r\n"), [:Seen], Time.now)
Subject: hello
From: shugo@ruby-lang.org
To: shugo@ruby-lang.org
hello world
EOF
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.
# File lib/net/imap.rb, line 600
600: def append(mailbox, message, flags = nil, date_time = nil)
601: args = []
602: if flags
603: args.push(flags)
604: end
605: args.push(date_time) if date_time
606: args.push(Literal.new(message))
607: send_command("APPEND", mailbox, *args)
608: 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 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 these mechanisms, there should be two args: username and (cleartext) password. A server may not support one or 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.
# File lib/net/imap.rb, line 350
350: def authenticate(auth_type, *args)
351: auth_type = auth_type.upcase
352: unless @@authenticators.has_key?(auth_type)
353: raise ArgumentError,
354: format('unknown auth type - "%s"', auth_type)
355: end
356: authenticator = @@authenticators[auth_type].new(*args)
357: send_command("AUTHENTICATE", auth_type) do |resp|
358: if resp.instance_of?(ContinuationRequest)
359: data = authenticator.process(resp.data.text.unpack("m")[0])
360: s = [data].pack("m").gsub(/\n/, "")
361: send_string_data(s)
362: put_string(CRLF)
363: end
364: end
365: 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.
# File lib/net/imap.rb, line 307
307: def capability
308: synchronize do
309: send_command("CAPABILITY")
310: return @responses.delete("CAPABILITY")[-1]
311: end
312: 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.
# File lib/net/imap.rb, line 614
614: def check
615: send_command("CHECK")
616: 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 or an array of numbers or a Range object. The number is a message sequence number.
# File lib/net/imap.rb, line 742
742: def copy(set, mailbox)
743: copy_internal("COPY", set, mailbox)
744: 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.
# File lib/net/imap.rb, line 413
413: def create(mailbox)
414: send_command("CREATE", mailbox)
415: 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.
# File lib/net/imap.rb, line 422
422: def delete(mailbox)
423: send_command("DELETE", mailbox)
424: end
Disconnects from the server.
# File lib/net/imap.rb, line 286
286: def disconnect
287: @sock.shutdown unless @usessl
288: @receiver_thread.join
289: @sock.close
290: end
Returns true if disconnected from the server.
# File lib/net/imap.rb, line 293
293: def disconnected?
294: return @sock.closed?
295: 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.
# File lib/net/imap.rb, line 402
402: def examine(mailbox)
403: synchronize do
404: @responses.clear
405: send_command("EXAMINE", mailbox)
406: end
407: end
Sends a EXPUNGE command to permanently remove from the currently selected mailbox all messages that have the \Deleted flag set.
# File lib/net/imap.rb, line 627
627: def expunge
628: synchronize do
629: send_command("EXPUNGE")
630: return @responses.delete("EXPUNGE")
631: end
632: end
Sends a FETCH command to retrieve data associated with a message in the mailbox. The set parameter is a number or an array of numbers or a Range object. The number is a message sequence number. 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. 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
# File lib/net/imap.rb, line 706
706: def fetch(set, attr)
707: return fetch_internal("FETCH", set, attr)
708: end
Send the GETACL command along with specified mailbox. If this mailbox exists, an array containing objects of Net::IMAP::MailboxACLItem will be returned.
# File lib/net/imap.rb, line 540
540: def getacl(mailbox)
541: synchronize do
542: send_command("GETACL", mailbox)
543: return @responses.delete("ACL")[-1]
544: end
545: 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 generally is only available to server admin.
# File lib/net/imap.rb, line 504
504: def getquota(mailbox)
505: synchronize do
506: send_command("GETQUOTA", mailbox)
507: return @responses.delete("QUOTA")
508: end
509: end
Sends the GETQUOTAROOT command along with specified mailbox. This command is generally available to both admin and user. If mailbox exists, returns an array containing objects of Net::IMAP::MailboxQuotaRoot and Net::IMAP::MailboxQuota.
# File lib/net/imap.rb, line 490
490: def getquotaroot(mailbox)
491: synchronize do
492: send_command("GETQUOTAROOT", mailbox)
493: result = []
494: result.concat(@responses.delete("QUOTAROOT"))
495: result.concat(@responses.delete("QUOTA"))
496: return result
497: end
498: 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">]
# File lib/net/imap.rb, line 479
479: def list(refname, mailbox)
480: synchronize do
481: send_command("LIST", refname, mailbox)
482: return @responses.delete("LIST")
483: end
484: 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.
# File lib/net/imap.rb, line 373
373: def login(user, password)
374: send_command("LOGIN", user, password)
375: end
Sends a LOGOUT command to inform the server that the client is done with the connection.
# File lib/net/imap.rb, line 321
321: def logout
322: send_command("LOGOUT")
323: 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+.
# File lib/net/imap.rb, line 552
552: def lsub(refname, mailbox)
553: synchronize do
554: send_command("LSUB", refname, mailbox)
555: return @responses.delete("LSUB")
556: end
557: end
Sends a NOOP command to the server. It does nothing.
# File lib/net/imap.rb, line 315
315: def noop
316: send_command("NOOP")
317: end
Removes the response handler.
# File lib/net/imap.rb, line 786
786: def remove_response_handler(handler)
787: @response_handlers.delete(handler)
788: 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 433
433: def rename(mailbox, newname)
434: send_command("RENAME", mailbox, newname)
435: 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]
# File lib/net/imap.rb, line 674
674: def search(keys, charset = nil)
675: return search_internal("SEARCH", keys, charset)
676: 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["EXISTS"][-1], and the number of recent messages from @responses["RECENT"][-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.
# File lib/net/imap.rb, line 389
389: def select(mailbox)
390: synchronize do
391: @responses.clear
392: send_command("SELECT", mailbox)
393: end
394: 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].
# File lib/net/imap.rb, line 529
529: def setacl(mailbox, user, rights)
530: if rights.nil?
531: send_command("SETACL", mailbox, user, "")
532: else
533: send_command("SETACL", mailbox, user, rights)
534: end
535: 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 server admin for this to work. The IMAP quota commands are described in [RFC-2087].
# File lib/net/imap.rb, line 516
516: def setquota(mailbox, quota)
517: if quota.nil?
518: data = '()'
519: else
520: data = '(STORAGE ' + quota.to_s + ')'
521: end
522: send_command("SETQUOTA", mailbox, RawData.new(data))
523: 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.
# File lib/net/imap.rb, line 760
760: def sort(sort_keys, search_keys, charset)
761: return sort_internal("SORT", sort_keys, search_keys, charset)
762: end
Sends a STATUS command, and returns the status of the indicated mailbox. attr is a list of one or more attributes that we are request the status of. 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.
# File lib/net/imap.rb, line 575
575: def status(mailbox, attr)
576: synchronize do
577: send_command("STATUS", mailbox, attr)
578: return @responses.delete("STATUS")[-1].attr
579: end
580: end
Sends a STORE command to alter data associated with messages in the mailbox, in particular their flags. The set parameter is a number or 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’ means to replace the message‘s flag list with the provided one; ’+FLAGS’ means to add the provided flags; and ’-FLAGS’ means to 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]}>]
# File lib/net/imap.rb, line 729
729: def store(set, attr, flags)
730: return store_internal("STORE", set, attr, flags)
731: 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.
# File lib/net/imap.rb, line 443
443: def subscribe(mailbox)
444: send_command("SUBSCRIBE", mailbox)
445: end
As for 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.
# File lib/net/imap.rb, line 803
803: def thread(algorithm, search_keys, charset)
804: return thread_internal("THREAD", algorithm, search_keys, charset)
805: 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.
# File lib/net/imap.rb, line 453
453: def unsubscribe(mailbox)
454: send_command("UNSUBSCRIBE", mailbox)
455: end
# File lib/net/imap.rb, line 1169
1169: def copy_internal(cmd, set, mailbox)
1170: send_command(cmd, MessageSet.new(set), mailbox)
1171: end
# File lib/net/imap.rb, line 1147
1147: def fetch_internal(cmd, set, attr)
1148: if attr.instance_of?(String)
1149: attr = RawData.new(attr)
1150: end
1151: synchronize do
1152: @responses.delete("FETCH")
1153: send_command(cmd, MessageSet.new(set), attr)
1154: return @responses.delete("FETCH")
1155: end
1156: end
# File lib/net/imap.rb, line 1032
1032: def generate_tag
1033: @tagno += 1
1034: return format("%s%04d", @tag_prefix, @tagno)
1035: end
# File lib/net/imap.rb, line 980
980: def get_response
981: buff = ""
982: while true
983: s = @sock.gets(CRLF)
984: break unless s
985: buff.concat(s)
986: if /\{(\d+)\}\r\n/n =~ s
987: s = @sock.read($1.to_i)
988: buff.concat(s)
989: else
990: break
991: end
992: end
993: return nil if buff.length == 0
994: if @@debug
995: $stderr.print(buff.gsub(/^/n, "S: "))
996: end
997: return @parser.parse(buff)
998: end
# File lib/net/imap.rb, line 965
965: def get_tagged_response(tag, cmd)
966: until @tagged_responses.key?(tag)
967: @tagged_response_arrival.wait
968: end
969: resp = @tagged_responses.delete(tag)
970: case resp.name
971: when /\A(?:NO)\z/ni
972: raise NoResponseError, resp.data.text
973: when /\A(?:BAD)\z/ni
974: raise BadResponseError, resp.data.text
975: else
976: return resp
977: end
978: end
# File lib/net/imap.rb, line 1197
1197: def normalize_searching_criteria(keys)
1198: keys.collect! do |i|
1199: case i
1200: when -1, Range, Array
1201: MessageSet.new(i)
1202: else
1203: i
1204: end
1205: end
1206: end
# File lib/net/imap.rb, line 1037
1037: def put_string(str)
1038: @sock.print(str)
1039: if @@debug
1040: if @debug_output_bol
1041: $stderr.print("C: ")
1042: end
1043: $stderr.print(str.gsub(/\n(?!\z)/n, "\nC: "))
1044: if /\r\n\z/n.match(str)
1045: @debug_output_bol = true
1046: else
1047: @debug_output_bol = false
1048: end
1049: end
1050: end
# File lib/net/imap.rb, line 923
923: def receive_responses
924: while true
925: begin
926: resp = get_response
927: rescue Exception
928: @sock.close
929: @client_thread.raise($!)
930: break
931: end
932: break unless resp
933: begin
934: synchronize do
935: case resp
936: when TaggedResponse
937: @tagged_responses[resp.tag] = resp
938: @tagged_response_arrival.broadcast
939: if resp.tag == @logout_command_tag
940: return
941: end
942: when UntaggedResponse
943: record_response(resp.name, resp.data)
944: if resp.data.instance_of?(ResponseText) &&
945: (code = resp.data.code)
946: record_response(code.name, code.data)
947: end
948: if resp.name == "BYE" && @logout_command_tag.nil?
949: @sock.close
950: raise ByeResponseError, resp.raw_data
951: end
952: when ContinuationRequest
953: @continuation_request_arrival.signal
954: end
955: @response_handlers.each do |handler|
956: handler.call(resp)
957: end
958: end
959: rescue Exception
960: @client_thread.raise($!)
961: end
962: end
963: end
# File lib/net/imap.rb, line 1000
1000: def record_response(name, data)
1001: unless @responses.has_key?(name)
1002: @responses[name] = []
1003: end
1004: @responses[name].push(data)
1005: end
# File lib/net/imap.rb, line 1131
1131: def search_internal(cmd, keys, charset)
1132: if keys.instance_of?(String)
1133: keys = [RawData.new(keys)]
1134: else
1135: normalize_searching_criteria(keys)
1136: end
1137: synchronize do
1138: if charset
1139: send_command(cmd, "CHARSET", charset, *keys)
1140: else
1141: send_command(cmd, *keys)
1142: end
1143: return @responses.delete("SEARCH")[-1]
1144: end
1145: end
# File lib/net/imap.rb, line 1007
1007: def send_command(cmd, *args, &block)
1008: synchronize do
1009: tag = generate_tag
1010: put_string(tag + " " + cmd)
1011: args.each do |i|
1012: put_string(" ")
1013: send_data(i)
1014: end
1015: put_string(CRLF)
1016: if cmd == "LOGOUT"
1017: @logout_command_tag = tag
1018: end
1019: if block
1020: add_response_handler(block)
1021: end
1022: begin
1023: return get_tagged_response(tag, cmd)
1024: ensure
1025: if block
1026: remove_response_handler(block)
1027: end
1028: end
1029: end
1030: end
# File lib/net/imap.rb, line 1052
1052: def send_data(data)
1053: case data
1054: when nil
1055: put_string("NIL")
1056: when String
1057: send_string_data(data)
1058: when Integer
1059: send_number_data(data)
1060: when Array
1061: send_list_data(data)
1062: when Time
1063: send_time_data(data)
1064: when Symbol
1065: send_symbol_data(data)
1066: else
1067: data.send_data(self)
1068: end
1069: end
# File lib/net/imap.rb, line 1103
1103: def send_list_data(list)
1104: put_string("(")
1105: first = true
1106: list.each do |i|
1107: if first
1108: first = false
1109: else
1110: put_string(" ")
1111: end
1112: send_data(i)
1113: end
1114: put_string(")")
1115: end
# File lib/net/imap.rb, line 1090
1090: def send_literal(str)
1091: put_string("{" + str.length.to_s + "}" + CRLF)
1092: @continuation_request_arrival.wait
1093: put_string(str)
1094: end
# File lib/net/imap.rb, line 1096
1096: def send_number_data(num)
1097: if num < 0 || num >= 4294967296
1098: raise DataFormatError, num.to_s
1099: end
1100: put_string(num.to_s)
1101: end
# File lib/net/imap.rb, line 1086
1086: def send_quoted_string(str)
1087: put_string('"' + str.gsub(/["\\]/n, "\\\\\\&") + '"')
1088: end
# File lib/net/imap.rb, line 1071
1071: def send_string_data(str)
1072: case str
1073: when ""
1074: put_string('""')
1075: when /[\x80-\xff\r\n]/n
1076: # literal
1077: send_literal(str)
1078: when /[(){ \x00-\x1f\x7f%*"\\]/n
1079: # quoted string
1080: send_quoted_string(str)
1081: else
1082: put_string(str)
1083: end
1084: end
# File lib/net/imap.rb, line 1127
1127: def send_symbol_data(symbol)
1128: put_string("\\" + symbol.to_s)
1129: end
# File lib/net/imap.rb, line 1119
1119: def send_time_data(time)
1120: t = time.dup.gmtime
1121: s = format('"%2d-%3s-%4d %02d:%02d:%02d +0000"',
1122: t.day, DATE_MONTH[t.month - 1], t.year,
1123: t.hour, t.min, t.sec)
1124: put_string(s)
1125: end
# File lib/net/imap.rb, line 1173
1173: def sort_internal(cmd, sort_keys, search_keys, charset)
1174: if search_keys.instance_of?(String)
1175: search_keys = [RawData.new(search_keys)]
1176: else
1177: normalize_searching_criteria(search_keys)
1178: end
1179: normalize_searching_criteria(search_keys)
1180: synchronize do
1181: send_command(cmd, sort_keys, charset, *search_keys)
1182: return @responses.delete("SORT")[-1]
1183: end
1184: end
# File lib/net/imap.rb, line 1158
1158: def store_internal(cmd, set, attr, flags)
1159: if attr.instance_of?(String)
1160: attr = RawData.new(attr)
1161: end
1162: synchronize do
1163: @responses.delete("FETCH")
1164: send_command(cmd, MessageSet.new(set), attr, flags)
1165: return @responses.delete("FETCH")
1166: end
1167: end
# File lib/net/imap.rb, line 1186
1186: def thread_internal(cmd, algorithm, search_keys, charset)
1187: if search_keys.instance_of?(String)
1188: search_keys = [RawData.new(search_keys)]
1189: else
1190: normalize_searching_criteria(search_keys)
1191: end
1192: normalize_searching_criteria(search_keys)
1193: send_command(cmd, algorithm, charset, *search_keys)
1194: return @responses.delete("THREAD")[-1]
1195: end