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4.4.14.3 IMAP
.. ( )
| IMAP 4.1 |
| A. |
IMAP 4.1 (INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1, V.Crispin, RFC-2060, December 1996) TCP 143. IMAP 993. IMAP POP-3. - .
| POP3 IMAP ( ). |
IMAP 4.1 . , . , , , CRLF. ( ) , .
. - ( - , A0001, A0002 ..), (tag). . , , , . - , (. ). - (. authenticate). , . "+".
: , , , bad , - .
( ) . , , . .
IMAP 4.1 , , , . .
, , , , "*" .
. .
. , , . , , , . : ok ( ), no ( ) bad ( , , ).
IMAP 4.1 . , "*" "+".
. , . , , .
. .
IMAP 4.1 .
32- , 64- , . , UID, .
, , . [IMAP-DISC].
UID uidvalidity (ok) . UID - , UID .
| UID . IMAP, UID , UID . |
UID . , UID. UID 32- . 1, , , .
UID , . UID , , UID .
, 1. 1 , .
. , , . , .
, . , 287 , 523 , UID 12345, 286 , UID 236 UID.
, . . IMAP 4.1. .
, . "\". (\deleted \seen) , . :
| \seen | |
| \answered | |
| \flagged | "" , |
| \deleted | expunge |
| \draft | (, ). |
| \recent | . , ; \recent. . |
, , . . "\". . ; , .
| \recent . \recent store, . |
. , [RFC-822], . [SMTP], . , IMAP 4.1 copy, . IMAP 4.1 append, , append.
( [RFC-822]). [RFC-822]. [MIME-IMB]. , RFC-822, IMAP 4.1 . .
IMAP 4.1 . . , . bad no .
, . , .
, . , .
, . .
. 4.4.14.2.1. IMAP
(1) C ( OK)
(2) C ( PREAUTH)
(3) ( BYE)
(4) LOGIN AUTHENTICATE
(5) SELECT EXAMINE
(6) CLOSE, SELECT EXAMINE
(7) LOGOUT, ,
IMAP 4.1 . IMAP 4.1 : , , , , NIL.
.
.
: . . , , , .
( CR LF). , . , CRLF. CRLF . , .
7- CR LF, (<">). "" {0}, CRLF.
: , , .
8- [MIME-IMB]. IMAP 4.1 8- , , [CHARSET]. BINARY, . " " - NUL . , BASE64, . CTL .
, , . . () - .
"NIL" - . "" ().
. INBOX , " " ( ). . , .
, "#" . , , USENET "#news", . , comp.mail.misc "#news.comp.mail.misc", "comp.mail.misc" (., ).
UTF-7, [UTF-7]. , UTF-7:
UTF-7, US-ASCII "&" ; , 0x20-0x25 0x27-0x7e. "&" (0x26) "&-". ( 0x00-0x1f, 0x7f-0xff, 16- ) BASE64, [UTF-7]. BASE64 US-ASCII, .
"&" BASE64 "-" US-ASCII. US-ASCII, US-ASCII ( , , 16- , "-"). , , : ~peter/mail/&ZeVnLIqe-/&U,BTFw-
, . , . , , , , (, ), . , . , . , ( EXPUNGE). . , .
( EXPUNGE), . , , . , (1) , , (2) .
, , , 30 . .
, , .
, . , , - . , .
, , FETCH STORE .
, EXPUNGE ( FETCH, STORE SEARCH), EXPUNGE . FETCH, STORE SEARCH, EXPUNGE, . , , FETCH, STORE SEARCH, , , . , ( ) :
FETCH + NOOP + STORE
STORE + COPY + FETCH
COPY + COPY
CHECK + FETCH
, :
FETCH + STORE + SEARCH + CHECK
STORE + COPY + EXPUNGE
IMAP 4.1. , .
: CAPABILITY, NOOP LOGOUT.
: .
: : CAPABILITY.
: OK - ;
BAD - <./p>
CAPABILITY , . CAPABILITY "IMAP 4.1" , OK. . , CAPABILITY . , "AUTH=" , . . , "blurdybloop" "AUTH=XBLURDYBLOOP", "XAUTH=BLURDYBLOOP" "XAUTH=XBLURDYBLOOP".
, .
: C: abcd CAPABILITY
S: * CAPABILITY IMAP 4.1 AUTH=KERBEROS_V4
S: abcd OK CAPABILITY completed
: .
: .
: OK - ;
BAD - ;
NOOP .
, NOOP , . NOOP - .
: C: a002 NOOP
S: a002 OK NOOP completed
. . .
C: a047 NOOP
S: * 22 EXPUNGE
S: * 23 EXISTS
S: * 3 RECENT
S: * 14 FETCH (FLAGS (\Seen \Deleted))
S: a047 OK NOOP completed
: .
: BYE.
: OK - ;
BAD - .
LOGOUT , . BYE, OK, .
: C: A023 LOGOUT
S: * BYE IMAP 4.1 Server logging out
S: A023 OK LOGOUT completed
( )
, AUTHENTICATE LOGIN . IMAP RFC-1731. AUTHENTICATE , LOGIN .
. LOGIN "anonymous". . .
. (CAPABILITY, NOOP LOGOUT), : AUTHENTICATE LOGIN.
: .
: .
| OK | , " "; | |
| NO | : , ; | |
| BAD | , . |
AUTHENTICATE , [IMAP-AUTH]. , . . , AUTHENTICATE NO.
. - "+", BASE64. , BASE64. , , "*". , AUTHENTICATE, BAD.
. , , . CRLF, , CRLF OK . , . , , . - .
. ; - . AUTHENTICATE NO, , AUTHENTICATE, LOGIN. , , LOGIN .
: S: * OK KerberosV4 IMAP4rev1 Server
C: A001 AUTHENTICATE KERBEROS_V4
S: + AmFYig==
C: BAcAQU5EUkVXLkNNVS5FRFUAOCAsho84kLN3/IJmrMG+25a4DT
+nZImJjnTNHJUtxAA+o0KPKfHEcAFs9a3CL5Oebe/ydHJUwYFd
WwuQ1MWiy6IesKvjL5rL9WjXUb9MwT9bpObYLGOKi1Qh
S: + or//EoAADZI=
C: DiAF5A4gA+oOIALuBkAAmw==
S: A001 OK Kerberos V4 authentication successful
: , .
: - .
: OK - login , ;
NO - login : ;
BAD - .
LOGIN .
: C: a001 LOGIN SMITH SESAME
S: a001 OK LOGIN completed
" " , -. SELECT EXAMINE "" .
(CAPABILITY, NOOP LOGOUT), " " : SELECT, EXAMINE, CREATE, DELETE, RENAME, SUBSCRIBE, UNSUBSCRIBE, LIST, LSUB, STATUS APPEND.
: .
: : FLAGS, EXISTS, RECENT;
OK: UNSEEN, PERMANENTFLAGS.
: OK - , "";
NO - : , ;
BAD - .
SELECT , , . OK, :
FLAGS - , .
<n> EXISTS .
<n> RECENT \Recent.
OK [UIDVALIDITY <n> ] .
"" OK, .
, FLAGS, OK PERMANENTFLAGS, , .
. . SELECT . , , SELECT , . , OK "[READ-WRITE]".
, , " " OK SELECT "[READ-ONLY]". " " , EXAMINE, . .newsrc , " ".
: C: A142 SELECT INBOX
S: * 172 EXISTS
S: * 1 RECENT
S: * OK [UNSEEN 12] Message 12 is first unseen
S: * OK [UIDVALIDITY 3857529045] UIDs valid
S: * FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
S: * OK [PERMANENTFLAGS (\Deleted \Seen \*)] Limited
S: A142 OK [READ-WRITE] SELECT completed
: .
: : FLAGS, EXISTS, RECENT;
OK: UNSEEN, PERMANENTFLAGS.
| : | OK | , " " ; |
| NO | , " "; ; ; | |
| BAD | . |
EXAMINE SELECT , , " ". . OK EXAMINE "[READ-ONLY]".
: C: A932 EXAMINE blurdybloop
S: * 17 EXISTS
S: * 2 RECENT
S: * OK [UNSEEN 8] Message 8 is first unseen
S: * OK [UIDVALIDITY 3857529045] UIDs valid
S: * FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
S: * OK [PERMANENTFLAGS ()] No permanent flags permitted
S: A932 OK [READ-ONLY] EXAMINE completed
: .
: - .
| OK | ; | |
| NO | : ; | |
| BAD | . |
CREATE . OK , . INBOX , , . NO.
( , LIST), . , , .
- - , , CREATE. , "foo/bar/zap" , "/" , foo/ foo/bar/, .
, , , UID.
: C: A003 CREATE owatagusiam/
S: A003 OK CREATE completed
C: A004 CREATE owatagusiam/blurdybloop
S: A004 OK CREATE completed
: , "/" . "/" , "owatagusiam" "blurdybloop". .
: .
: - .
: OK - ;
NO - : ;
BAD - .
DELETE . OK , . INBOX .
DELETE , . , "foo" "foo.bar" (, "." ), "foo" "foo.bar". , , \Noselect.
, , \Noselect. , \Noselect.
, , UID.
: C: A682 LIST "" *
S: * LIST () "/" blurdybloop
S: * LIST (\Noselect) "/" foo
S: * LIST () "/" foo/bar
S: A682 OK LIST completed
C: A683 DELETE blurdybloop
S: A683 OK DELETE completed
C: A684 DELETE foo
S: A684 NO Name "foo" has inferior hierarchical names
C: A685 DELETE foo/bar
S: A685 OK DELETE Completed
C: A686 LIST "" *
S: * LIST (\Noselect) "/" foo
S: A686 OK LIST completed
C: A687 DELETE foo
S: A687 OK DELETE Completed
C: A82 LIST "" *
S: * LIST () "." blurdybloop
S: * LIST () "." foo
S: * LIST () "." foo.bar
S: A82 OK LIST completed
C: A83 DELETE blurdybloop
S: A83 OK DELETE completed
C: A84 DELETE foo
S: A84 OK DELETE Completed
C: A85 LIST "" *
S: * LIST () "." foo.bar
S: A85 OK LIST completed
C: A86 LIST "" %
S: * LIST (\Noselect) "." foo
S: A86 OK LIST completed
: , .
: - .
| : | OK | ; |
| NO | : , ; | |
| BAD | . |
RENAME . OK , . . NO.
, . , "foo" "zap" "foo/bar" (, "/" ) "zap/bar".
, , UID.
INBOX , . , INBOX . INBOX, INBOX.
: C: A682 LIST "" *
S: * LIST () "/" blurdybloop
S: * LIST (\Noselect) "/" foo
S: * LIST () "/" foo/bar
S: A682 OK LIST completed
C: A683 RENAME blurdybloop sarasoop
S: A683 OK RENAME completed
C: A684 RENAME foo zowie
S: A684 OK RENAME Completed
C: A685 LIST "" *
S: * LIST () "/" sarasoop
S: * LIST (\Noselect) "/" zowie
S: * LIST () "/" zowie/bar
S: A685 OK LIST completed
C: Z432 LIST "" *
S: * LIST () "." INBOX
S: * LIST () "." INBOX.bar
S: Z432 OK LIST completed
C: Z433 RENAME INBOX old-mail
S: Z433 OK RENAME completed
C: Z434 LIST "" *
S: * LIST () "." INBOX
S: * LIST () "." INBOX.bar
S: * LIST () "." old-mail
S: Z434 OK LIST completed
: .
: - .
: OK - ;
NO - : ;
BAD - .
SUBSCRIBE "" "" , LSUB. OK .
SUBSCRIBE, . , .
: , , , "system-alerts") , .
: C: A002 SUBSCRIBE #news.comp.mail.mime
S: A002 OK SUBSCRIBE completed
: .
: - .
: OK - ;
NO - : ;
BAD - .
UNSUBSCRIBE "" "" , LSUB. OK , .
: C: A002 UNSUBSCRIBE #news.comp.mail.mime
S: A002 OK UNSUBSCRIBE completed
: ,
(wildcard).
: LIST.
| : | OK | list ; |
| NO | : list ; | |
| BAD | . |
LIST , . LIST, , .
LIST . , (\Marked \Unmarked) , , 1200 20 .
, (""), , , SELECT. . , . ("") , . , , , . . , , .
- . .
, , . , . , . , .
, UNIX:
| ~smith/Mail/ | foo.* | ~smith/Mail/foo.* |
| Archive/ | % | archive/% |
| #news. | comp.mail.* | #news.comp.mail.* |
| ~smith/Mail/ | /usr/doc/foo | /usr/doc/foo |
| archive/ | ~fred/Mail/* | ~fred/Mail/* |
. , "~smith/Mail" - "/u2/users/smith/Mail", , .
"*" (wildcard), . "%" "*", . "%" , . , , \Noselect. , (wildcard). , UNIX "*" , "/" .
INBOX LIST, INBOX , "INBOX", , .
: C: A101 LIST "" ""
S: * LIST (\Noselect) "/" ""
S: A101 OK LIST Completed
C: A102 LIST #news.comp.mail.misc ""
S: * LIST (\Noselect) "." #news.
S: A102 OK LIST Completed
C: A103 LIST /usr/staff/jones ""
S: * LIST (\Noselect) "/" /
S: A103 OK LIST Completed
C: A202 LIST ~/Mail/ %
S: * LIST (\Noselect) "/" ~/Mail/foo
S: * LIST () "/" ~/Mail/meetings
S: A202 OK LIST completed
: -,
(wildcards).
: : LSUB
| : | OK | ; |
| NO | : ; | |
| BAD | . |
LSUB , "" "". LSUB. LSUB , LIST.
, , . , LSUB \Noselect. , .
: C: A002 LSUB "#news." "comp.mail.*"
S: * LSUB () "." #news.comp.mail.mime
S: * LSUB () "." #news.comp.mail.misc
S: A002 OK LSUB completed
: , .
: : STATUS.
: OK - ;
NO - : ;
BAD - .
STATUS . - ( STATUS \Recent).
STATUS IMAP 4.1 EXAMINE , , .
LIST, STATUS . " ", . , STATUS . , :
| MESSAGES | |
| RECENT | \Recent |
| UIDNEXT | , . , , . UID , . |
| UIDVALIDITY | |
| UNSEEN | , \Seen |
: C: A042 STATUS blurdybloop (UIDNEXT MESSAGES)
S: * STATUS blurdybloop (MESSAGES 231 UIDNEXT 44292)
S: A042 OK STATUS completed
: ,
- ,
- ,
: -
| : | OK | |
| NO | : , /, | |
| BAD |
APPEND . [RFC-822]. 8- . , 8- , 8- APPEND 7-, [MIME-IMB]. , , .
date_time, , , . append - , , APPEND.
, , . , , "[TRYCREATE]" NO. CREATE, , , APPEND.
, . , EXISTS. , APPEND NOOP ( CHECK).
: C: A003 APPEND saved-messages (\Seen) {310}
C: Date: Mon, 7 Feb 1994 21:52:25 -0800 (PST)
C: From: Fred Foobar
C: Subject: afternoon meeting
C: To: mooch@owatagu.siam.edu
C: Message-Id:
C: MIME-Version: 1.0
C: Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
C:
C: Hello Joe, do you think we can meet at 3:30 tomorrow?
C:
S: A003 OK APPEND completed
: APPEND , [SMTP].
" ", , . (CAPABILITY, NOOP LOGOUT), (SELECT, EXAMINE, CREATE, DELETE, RENAME, SUBSCRIBE, UNSUBSCRIBE, LIST, LSUB, STATUS APPEND), : CHECK, CLOSE, EXPUNGE, SEARCH, FETCH, STORE, COPY UID.
: .
: - ;
: OK - ;
BAD - .
CHECK . , (, ). , NOOP.
, CHECK . NOOP, CHECK.
: C: FXXZ CHECK
S: FXXZ OK CHECK Completed
: .
: - .
: OK - , " ";
NO - , ;
BAD - .
CLOSE , \Deleted, " ". EXPUNGE .
, EXAMINE " ".
, SELECT, EXAMINE LOGOUT CLOSE. SELECT, EXAMINE LOGOUT . , CLOSE-LOGOUT CLOSE-SELECT , EXPUNGE-LOGOUT EXPUNGE-SELECT, EXPUNGE ( ).
: C: A341 CLOSE
S: A341 OK CLOSE completed
: .
: : EXPUNGE.
: OK - ;
NO - : (, );
BAD - .
EXPUNGE , \Deleted. OK, EXPUNGE .
: C: A202 EXPUNGE
S: * 3 EXPUNGE
S: * 3 EXPUNGE
S: * 5 EXPUNGE
S: * 8 EXPUNGE
S: A202 OK EXPUNGE completed
: , 3, 4, 7 11 \Deleted. , .
: , [CHARSET]-.
( ).
: : SEARCH.
: OK - ;
NO - : ;
BAD -
SEARCH , . . SEARCH , .
, ( AND) , . , DELETED FROM "SMITH" SINCE 1-Feb-1994 , 1- 1994. (, OR NOT).
[CHARSET] "CHARSET", [CHARSET]. [CHARSET] , . [MIME-IMB] [MIME-HDRS] [RFC-822]/[MIME-IMB] , [CHARSET], US-ASCII. US-ASCII , . [CHARSET], NO ( BAD).
, , , . . .
| < > | , |
| ALL | . AND |
| ANSWERED | \Answered. |
| BCC <> | , BCC . |
| BEFORE <> | , . |
| BODY <> | , . |
| CC <> | , CC . |
| DELETED | \Deleted. |
| DRAFT | \Draft. |
| FLAGGED | c \Flagged. |
| FROM <> | , FROM . |
| HEADER < > <> | , ( [RFC-822]) . |
| KEYWORD <> | . |
| LARGER <n> | [RFC-822] . |
| NEW | , \Recent, \Seen. "(RECENT UNSEEN)". |
| NOT < > | , . |
| OLD | , \Recent. "NOT RECENT" ( "NOT NEW"). |
| ON <> | , . |
| OR < 1> < 2> | , . |
| RECENT | , \Recent. |
| SEEN | , \Seen. |
| SENTBEFORE <> | , , [RFC-822]. |
| SENTON <> | , , [RFC-822] |
| SENTSINCE <> | , , [RFC-822]: . |
| SINCE <> | , . |
| SMALLER <n> | [RFC-822] . |
| SUBJECT <> | , SUBJECT . |
| TEXT <> | , |
| TO <> | , TO. |
| UID < > | , . |
| UNANSWERED | <>, \Answered. |
| UNDELETED | , \Deleted. |
| UNDRAFT | , \Draft. |
| UNFLAGGED | , \Flagged. |
| UNKEYWORD <> | , . |
| UNSEEN | , \Seen. |
: C: A282 SEARCH FLAGGED SINCE 1-Feb-1994 NOT FROM "Smith"
S: * SEARCH 2 84 882
S: A282 OK SEARCH completed
: ,
.
: : FETCH
: OK - ;
NO - : ;
BAD - .
FETCH , . , . , :
ALL : (FLAGS INTERNALDATE RFC822.SIZE ENVELOPE)
BODY BODYSTRUCTURE.
BODY[
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