| 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 825
825: def self.decode_utf7(s)
826: return s.gsub(/&(.*?)-/n) {
827: if $1.empty?
828: "&"
829: else
830: base64 = $1.tr(",", "/")
831: x = base64.length % 4
832: if x > 0
833: base64.concat("=" * (4 - x))
834: end
835: u16tou8(base64.unpack("m")[0])
836: end
837: }
838: end
Encode a string from UTF-8 format to modified UTF-7.
# File lib/net/imap.rb, line 841
841: def self.encode_utf7(s)
842: return s.gsub(/(&)|([^\x20-\x25\x27-\x7e]+)/n) { |x|
843: if $1
844: "&-"
845: else
846: base64 = [u8tou16(x)].pack("m")
847: "&" + base64.delete("=\n").tr("/", ",") + "-"
848: end
849: }
850: 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 879
879: def initialize(host, port = PORT, usessl = false, certs = nil, verify = false)
880: super()
881: @host = host
882: @port = port
883: @tag_prefix = "RUBY"
884: @tagno = 0
885: @parser = ResponseParser.new
886: @sock = TCPSocket.open(host, port)
887: if usessl
888: unless defined?(OpenSSL)
889: raise "SSL extension not installed"
890: end
891: @usessl = true
892:
893: # verify the server.
894: context = SSLContext::new()
895: context.ca_file = certs if certs && FileTest::file?(certs)
896: context.ca_path = certs if certs && FileTest::directory?(certs)
897: context.verify_mode = VERIFY_PEER if verify
898: if defined?(VerifyCallbackProc)
899: context.verify_callback = VerifyCallbackProc
900: end
901: @sock = SSLSocket.new(@sock, context)
902: @sock.connect # start ssl session.
903: else
904: @usessl = false
905: end
906: @responses = Hash.new([].freeze)
907: @tagged_responses = {}
908: @response_handlers = []
909: @response_arrival = new_cond
910: @continuation_request = nil
911: @logout_command_tag = nil
912: @debug_output_bol = true
913:
914: @greeting = get_response
915: if @greeting.name == "BYE"
916: @sock.close
917: raise ByeResponseError, @greeting.raw_data
918: end
919:
920: @client_thread = Thread.current
921: @receiver_thread = Thread.start {
922: receive_responses
923: }
924: end
# File lib/net/imap.rb, line 1224
1224: def self.u16tou8(s)
1225: len = s.length
1226: if len < 2
1227: return ""
1228: end
1229: buf = ""
1230: i = 0
1231: while i < len
1232: c = s[i] << 8 | s[i + 1]
1233: i += 2
1234: if c == 0xfeff
1235: next
1236: elsif c < 0x0080
1237: buf.concat(c)
1238: elsif c < 0x0800
1239: b2 = c & 0x003f
1240: b1 = c >> 6
1241: buf.concat(b1 | 0xc0)
1242: buf.concat(b2 | 0x80)
1243: elsif c >= 0xdc00 && c < 0xe000
1244: raise DataFormatError, "invalid surrogate detected"
1245: elsif c >= 0xd800 && c < 0xdc00
1246: if i + 2 > len
1247: raise DataFormatError, "invalid surrogate detected"
1248: end
1249: low = s[i] << 8 | s[i + 1]
1250: i += 2
1251: if low < 0xdc00 || low > 0xdfff
1252: raise DataFormatError, "invalid surrogate detected"
1253: end
1254: c = (((c & 0x03ff)) << 10 | (low & 0x03ff)) + 0x10000
1255: b4 = c & 0x003f
1256: b3 = (c >> 6) & 0x003f
1257: b2 = (c >> 12) & 0x003f
1258: b1 = c >> 18;
1259: buf.concat(b1 | 0xf0)
1260: buf.concat(b2 | 0x80)
1261: buf.concat(b3 | 0x80)
1262: buf.concat(b4 | 0x80)
1263: else # 0x0800-0xffff
1264: b3 = c & 0x003f
1265: b2 = (c >> 6) & 0x003f
1266: b1 = c >> 12
1267: buf.concat(b1 | 0xe0)
1268: buf.concat(b2 | 0x80)
1269: buf.concat(b3 | 0x80)
1270: end
1271: end
1272: return buf
1273: end
# File lib/net/imap.rb, line 1276
1276: def self.u8tou16(s)
1277: len = s.length
1278: buf = ""
1279: i = 0
1280: while i < len
1281: c = s[i]
1282: if (c & 0x80) == 0
1283: buf.concat(0x00)
1284: buf.concat(c)
1285: i += 1
1286: elsif (c & 0xe0) == 0xc0 &&
1287: len >= 2 &&
1288: (s[i + 1] & 0xc0) == 0x80
1289: if c == 0xc0 || c == 0xc1
1290: raise DataFormatError, format("non-shortest UTF-8 sequence (%02x)", c)
1291: end
1292: u = ((c & 0x1f) << 6) | (s[i + 1] & 0x3f)
1293: buf.concat(u >> 8)
1294: buf.concat(u & 0x00ff)
1295: i += 2
1296: elsif (c & 0xf0) == 0xe0 &&
1297: i + 2 < len &&
1298: (s[i + 1] & 0xc0) == 0x80 &&
1299: (s[i + 2] & 0xc0) == 0x80
1300: if c == 0xe0 && s[i + 1] < 0xa0
1301: raise DataFormatError, format("non-shortest UTF-8 sequence (%02x)", c)
1302: end
1303: u = ((c & 0x0f) << 12) | ((s[i + 1] & 0x3f) << 6) | (s[i + 2] & 0x3f)
1304: # surrogate chars
1305: if u >= 0xd800 && u <= 0xdfff
1306: raise DataFormatError, format("none-UTF-16 char detected (%04x)", u)
1307: end
1308: buf.concat(u >> 8)
1309: buf.concat(u & 0x00ff)
1310: i += 3
1311: elsif (c & 0xf8) == 0xf0 &&
1312: i + 3 < len &&
1313: (s[i + 1] & 0xc0) == 0x80 &&
1314: (s[i + 2] & 0xc0) == 0x80 &&
1315: (s[i + 3] & 0xc0) == 0x80
1316: if c == 0xf0 && s[i + 1] < 0x90
1317: raise DataFormatError, format("non-shortest UTF-8 sequence (%02x)", c)
1318: end
1319: u = ((c & 0x07) << 18) | ((s[i + 1] & 0x3f) << 12) |
1320: ((s[i + 2] & 0x3f) << 6) | (s[i + 3] & 0x3f)
1321: if u < 0x10000
1322: buf.concat(u >> 8)
1323: buf.concat(u & 0x00ff)
1324: elsif u < 0x110000
1325: high = ((u - 0x10000) >> 10) | 0xd800
1326: low = (u & 0x03ff) | 0xdc00
1327: buf.concat(high >> 8)
1328: buf.concat(high & 0x00ff)
1329: buf.concat(low >> 8)
1330: buf.concat(low & 0x00ff)
1331: else
1332: raise DataFormatError, format("none-UTF-16 char detected (%04x)", u)
1333: end
1334: i += 4
1335: else
1336: raise DataFormatError, format("illegal UTF-8 sequence (%02x)", c)
1337: end
1338: end
1339: return buf
1340: 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 785
785: def add_response_handler(handler = Proc.new)
786: @response_handlers.push(handler)
787: 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 604
604: def append(mailbox, message, flags = nil, date_time = nil)
605: args = []
606: if flags
607: args.push(flags)
608: end
609: args.push(date_time) if date_time
610: args.push(Literal.new(message))
611: send_command("APPEND", mailbox, *args)
612: 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 354
354: def authenticate(auth_type, *args)
355: auth_type = auth_type.upcase
356: unless @@authenticators.has_key?(auth_type)
357: raise ArgumentError,
358: format('unknown auth type - "%s"', auth_type)
359: end
360: authenticator = @@authenticators[auth_type].new(*args)
361: send_command("AUTHENTICATE", auth_type) do |resp|
362: if resp.instance_of?(ContinuationRequest)
363: data = authenticator.process(resp.data.text.unpack("m")[0])
364: s = [data].pack("m").gsub(/\n/, "")
365: send_string_data(s)
366: put_string(CRLF)
367: end
368: end
369: 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 311
311: def capability
312: synchronize do
313: send_command("CAPABILITY")
314: return @responses.delete("CAPABILITY")[-1]
315: end
316: 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 618
618: def check
619: send_command("CHECK")
620: 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 746
746: def copy(set, mailbox)
747: copy_internal("COPY", set, mailbox)
748: 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 417
417: def create(mailbox)
418: send_command("CREATE", mailbox)
419: 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 426
426: def delete(mailbox)
427: send_command("DELETE", mailbox)
428: end
Disconnects from the server.
# File lib/net/imap.rb, line 286
286: def disconnect
287: if SSL::SSLSocket === @sock
288: @sock.io.shutdown
289: else
290: @sock.shutdown
291: end
292: @receiver_thread.join
293: @sock.close
294: end
Returns true if disconnected from the server.
# File lib/net/imap.rb, line 297
297: def disconnected?
298: return @sock.closed?
299: 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 406
406: def examine(mailbox)
407: synchronize do
408: @responses.clear
409: send_command("EXAMINE", mailbox)
410: end
411: 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 631
631: def expunge
632: synchronize do
633: send_command("EXPUNGE")
634: return @responses.delete("EXPUNGE")
635: end
636: 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 710
710: def fetch(set, attr)
711: return fetch_internal("FETCH", set, attr)
712: 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 544
544: def getacl(mailbox)
545: synchronize do
546: send_command("GETACL", mailbox)
547: return @responses.delete("ACL")[-1]
548: end
549: 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 508
508: def getquota(mailbox)
509: synchronize do
510: send_command("GETQUOTA", mailbox)
511: return @responses.delete("QUOTA")
512: end
513: 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 494
494: def getquotaroot(mailbox)
495: synchronize do
496: send_command("GETQUOTAROOT", mailbox)
497: result = []
498: result.concat(@responses.delete("QUOTAROOT"))
499: result.concat(@responses.delete("QUOTA"))
500: return result
501: end
502: 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 483
483: def list(refname, mailbox)
484: synchronize do
485: send_command("LIST", refname, mailbox)
486: return @responses.delete("LIST")
487: end
488: 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 377
377: def login(user, password)
378: send_command("LOGIN", user, password)
379: end
Sends a LOGOUT command to inform the server that the client is done with the connection.
# File lib/net/imap.rb, line 325
325: def logout
326: send_command("LOGOUT")
327: 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 556
556: def lsub(refname, mailbox)
557: synchronize do
558: send_command("LSUB", refname, mailbox)
559: return @responses.delete("LSUB")
560: end
561: end
Sends a NOOP command to the server. It does nothing.
# File lib/net/imap.rb, line 319
319: def noop
320: send_command("NOOP")
321: end
Removes the response handler.
# File lib/net/imap.rb, line 790
790: def remove_response_handler(handler)
791: @response_handlers.delete(handler)
792: 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 437
437: def rename(mailbox, newname)
438: send_command("RENAME", mailbox, newname)
439: 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 678
678: def search(keys, charset = nil)
679: return search_internal("SEARCH", keys, charset)
680: 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 393
393: def select(mailbox)
394: synchronize do
395: @responses.clear
396: send_command("SELECT", mailbox)
397: end
398: 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 533
533: def setacl(mailbox, user, rights)
534: if rights.nil?
535: send_command("SETACL", mailbox, user, "")
536: else
537: send_command("SETACL", mailbox, user, rights)
538: end
539: 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 520
520: def setquota(mailbox, quota)
521: if quota.nil?
522: data = '()'
523: else
524: data = '(STORAGE ' + quota.to_s + ')'
525: end
526: send_command("SETQUOTA", mailbox, RawData.new(data))
527: 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 764
764: def sort(sort_keys, search_keys, charset)
765: return sort_internal("SORT", sort_keys, search_keys, charset)
766: 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 579
579: def status(mailbox, attr)
580: synchronize do
581: send_command("STATUS", mailbox, attr)
582: return @responses.delete("STATUS")[-1].attr
583: end
584: 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 733
733: def store(set, attr, flags)
734: return store_internal("STORE", set, attr, flags)
735: 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 447
447: def subscribe(mailbox)
448: send_command("SUBSCRIBE", mailbox)
449: 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 807
807: def thread(algorithm, search_keys, charset)
808: return thread_internal("THREAD", algorithm, search_keys, charset)
809: 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 457
457: def unsubscribe(mailbox)
458: send_command("UNSUBSCRIBE", mailbox)
459: end
# File lib/net/imap.rb, line 1185
1185: def copy_internal(cmd, set, mailbox)
1186: send_command(cmd, MessageSet.new(set), mailbox)
1187: end
# File lib/net/imap.rb, line 1163
1163: def fetch_internal(cmd, set, attr)
1164: if attr.instance_of?(String)
1165: attr = RawData.new(attr)
1166: end
1167: synchronize do
1168: @responses.delete("FETCH")
1169: send_command(cmd, MessageSet.new(set), attr)
1170: return @responses.delete("FETCH")
1171: end
1172: end
# File lib/net/imap.rb, line 1040
1040: def generate_tag
1041: @tagno += 1
1042: return format("%s%04d", @tag_prefix, @tagno)
1043: end
# File lib/net/imap.rb, line 988
988: def get_response
989: buff = ""
990: while true
991: s = @sock.gets(CRLF)
992: break unless s
993: buff.concat(s)
994: if /\{(\d+)\}\r\n/n =~ s
995: s = @sock.read($1.to_i)
996: buff.concat(s)
997: else
998: break
999: end
1000: end
1001: return nil if buff.length == 0
1002: if @@debug
1003: $stderr.print(buff.gsub(/^/n, "S: "))
1004: end
1005: return @parser.parse(buff)
1006: end
# File lib/net/imap.rb, line 969
969: def get_tagged_response(tag)
970: until @tagged_responses.key?(tag)
971: @response_arrival.wait
972: end
973: return pick_up_tagged_response(tag)
974: end
# File lib/net/imap.rb, line 1213
1213: def normalize_searching_criteria(keys)
1214: keys.collect! do |i|
1215: case i
1216: when -1, Range, Array
1217: MessageSet.new(i)
1218: else
1219: i
1220: end
1221: end
1222: end
# File lib/net/imap.rb, line 976
976: def pick_up_tagged_response(tag)
977: resp = @tagged_responses.delete(tag)
978: case resp.name
979: when /\A(?:NO)\z/ni
980: raise NoResponseError, resp.data.text
981: when /\A(?:BAD)\z/ni
982: raise BadResponseError, resp.data.text
983: else
984: return resp
985: end
986: end
# File lib/net/imap.rb, line 1045
1045: def put_string(str)
1046: @sock.print(str)
1047: if @@debug
1048: if @debug_output_bol
1049: $stderr.print("C: ")
1050: end
1051: $stderr.print(str.gsub(/\n(?!\z)/n, "\nC: "))
1052: if /\r\n\z/n.match(str)
1053: @debug_output_bol = true
1054: else
1055: @debug_output_bol = false
1056: end
1057: end
1058: end
# File lib/net/imap.rb, line 926
926: def receive_responses
927: while true
928: begin
929: resp = get_response
930: rescue Exception
931: @sock.close
932: @client_thread.raise($!)
933: break
934: end
935: break unless resp
936: begin
937: synchronize do
938: case resp
939: when TaggedResponse
940: @tagged_responses[resp.tag] = resp
941: @response_arrival.broadcast
942: if resp.tag == @logout_command_tag
943: return
944: end
945: when UntaggedResponse
946: record_response(resp.name, resp.data)
947: if resp.data.instance_of?(ResponseText) &&
948: (code = resp.data.code)
949: record_response(code.name, code.data)
950: end
951: if resp.name == "BYE" && @logout_command_tag.nil?
952: @sock.close
953: raise ByeResponseError, resp.raw_data
954: end
955: when ContinuationRequest
956: @continuation_request = resp
957: @response_arrival.broadcast
958: end
959: @response_handlers.each do |handler|
960: handler.call(resp)
961: end
962: end
963: rescue Exception
964: @client_thread.raise($!)
965: end
966: end
967: end
# File lib/net/imap.rb, line 1008
1008: def record_response(name, data)
1009: unless @responses.has_key?(name)
1010: @responses[name] = []
1011: end
1012: @responses[name].push(data)
1013: end
# File lib/net/imap.rb, line 1147
1147: def search_internal(cmd, keys, charset)
1148: if keys.instance_of?(String)
1149: keys = [RawData.new(keys)]
1150: else
1151: normalize_searching_criteria(keys)
1152: end
1153: synchronize do
1154: if charset
1155: send_command(cmd, "CHARSET", charset, *keys)
1156: else
1157: send_command(cmd, *keys)
1158: end
1159: return @responses.delete("SEARCH")[-1]
1160: end
1161: end
# File lib/net/imap.rb, line 1015
1015: def send_command(cmd, *args, &block)
1016: synchronize do
1017: tag = Thread.current[:net_imap_tag] = generate_tag
1018: put_string(tag + " " + cmd)
1019: args.each do |i|
1020: put_string(" ")
1021: send_data(i)
1022: end
1023: put_string(CRLF)
1024: if cmd == "LOGOUT"
1025: @logout_command_tag = tag
1026: end
1027: if block
1028: add_response_handler(block)
1029: end
1030: begin
1031: return get_tagged_response(tag)
1032: ensure
1033: if block
1034: remove_response_handler(block)
1035: end
1036: end
1037: end
1038: end
# File lib/net/imap.rb, line 1060
1060: def send_data(data)
1061: case data
1062: when nil
1063: put_string("NIL")
1064: when String
1065: send_string_data(data)
1066: when Integer
1067: send_number_data(data)
1068: when Array
1069: send_list_data(data)
1070: when Time
1071: send_time_data(data)
1072: when Symbol
1073: send_symbol_data(data)
1074: else
1075: data.send_data(self)
1076: end
1077: end
# File lib/net/imap.rb, line 1119
1119: def send_list_data(list)
1120: put_string("(")
1121: first = true
1122: list.each do |i|
1123: if first
1124: first = false
1125: else
1126: put_string(" ")
1127: end
1128: send_data(i)
1129: end
1130: put_string(")")
1131: end
# File lib/net/imap.rb, line 1098
1098: def send_literal(str)
1099: put_string("{" + str.length.to_s + "}" + CRLF)
1100: while @continuation_request.nil? &&
1101: !@tagged_responses.key?(Thread.current[:net_imap_tag])
1102: @response_arrival.wait
1103: end
1104: if @continuation_request.nil?
1105: pick_up_tagged_response(Thread.current[:net_imap_tag])
1106: raise ResponseError.new("expected continuation request")
1107: end
1108: @continuation_request = nil
1109: put_string(str)
1110: end
# File lib/net/imap.rb, line 1112
1112: def send_number_data(num)
1113: if num < 0 || num >= 4294967296
1114: raise DataFormatError, num.to_s
1115: end
1116: put_string(num.to_s)
1117: end
# File lib/net/imap.rb, line 1094
1094: def send_quoted_string(str)
1095: put_string('"' + str.gsub(/["\\]/n, "\\\\\\&") + '"')
1096: end
# File lib/net/imap.rb, line 1079
1079: def send_string_data(str)
1080: case str
1081: when ""
1082: put_string('""')
1083: when /[\x80-\xff\r\n]/n
1084: # literal
1085: send_literal(str)
1086: when /[(){ \x00-\x1f\x7f%*"\\]/n
1087: # quoted string
1088: send_quoted_string(str)
1089: else
1090: put_string(str)
1091: end
1092: end
# File lib/net/imap.rb, line 1143
1143: def send_symbol_data(symbol)
1144: put_string("\\" + symbol.to_s)
1145: end
# File lib/net/imap.rb, line 1135
1135: def send_time_data(time)
1136: t = time.dup.gmtime
1137: s = format('"%2d-%3s-%4d %02d:%02d:%02d +0000"',
1138: t.day, DATE_MONTH[t.month - 1], t.year,
1139: t.hour, t.min, t.sec)
1140: put_string(s)
1141: end
# File lib/net/imap.rb, line 1189
1189: def sort_internal(cmd, sort_keys, search_keys, charset)
1190: if search_keys.instance_of?(String)
1191: search_keys = [RawData.new(search_keys)]
1192: else
1193: normalize_searching_criteria(search_keys)
1194: end
1195: normalize_searching_criteria(search_keys)
1196: synchronize do
1197: send_command(cmd, sort_keys, charset, *search_keys)
1198: return @responses.delete("SORT")[-1]
1199: end
1200: end
# File lib/net/imap.rb, line 1174
1174: def store_internal(cmd, set, attr, flags)
1175: if attr.instance_of?(String)
1176: attr = RawData.new(attr)
1177: end
1178: synchronize do
1179: @responses.delete("FETCH")
1180: send_command(cmd, MessageSet.new(set), attr, flags)
1181: return @responses.delete("FETCH")
1182: end
1183: end
# File lib/net/imap.rb, line 1202
1202: def thread_internal(cmd, algorithm, search_keys, charset)
1203: if search_keys.instance_of?(String)
1204: search_keys = [RawData.new(search_keys)]
1205: else
1206: normalize_searching_criteria(search_keys)
1207: end
1208: normalize_searching_criteria(search_keys)
1209: send_command(cmd, algorithm, charset, *search_keys)
1210: return @responses.delete("THREAD")[-1]
1211: end