draft-ietf-imapext-annotate-02.txt   draft-ietf-imapext-annotate-03.txt 
IMAP Extensions Working Group R. Gellens IMAP Extensions Working Group R. Gellens
Internet Draft: IMAP ANNOTATE Extension C. Daboo Internet Draft: IMAP ANNOTATE Extension C. Daboo
Document: draft-ietf-imapext-annotate-02.txt November 2001 Document: draft-ietf-imapext-annotate-03.txt January 2002
IMAP ANNOTATE Extension IMAP ANNOTATE Extension
Status of this Memo Status of this Memo
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026. Internet-Drafts are all provisions of Section 10 of RFC2026.
working documents of the Internet Engineering Task Force (IETF), its
areas, and its working groups. Note that other groups may also Internet-Drafts are working documents of the Internet Engineering
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Copyright Notice Copyright Notice
Copyright (C) The Internet Society 2001. All Rights Reserved. Copyright (C) The Internet Society 2002. All Rights Reserved.
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Table of Contents Table of Contents
1 Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Conventions Used in This Document . . . . . . . . . . . . . . 2 3 Conventions Used in This Document . . . . . . . . . . . . . . 2
4 Document Meta-Data . . . . . . . . . . . . . . . . . . . . . 3 4 Change History . . . . . . . . . . . . . . . . . . . . . . . 3
4.1 Open Issues . . . . . . . . . . . . . . . . . . . . . . . 3
4.2 Change History . . . . . . . . . . . . . . . . . . . . . 3
5 Introduction and Overview . . . . . . . . . . . . . . . . . . 4 5 Introduction and Overview . . . . . . . . . . . . . . . . . . 4
6 Data Model . . . . . . . . . . . . . . . . . . . . . . . . . 4 6 Data Model . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . 4 6.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . 5
6.2 Namespace of Entries and Attributes . . . . . . . . . . 5 6.2 Namespace of Entries and Attributes . . . . . . . . . . 5
6.2.1 Entry Names . . . . . . . . . . . . . . . . . . . . . 5 6.2.1 Entry Names . . . . . . . . . . . . . . . . . . . . . 5
6.2.2 Attribute Names . . . . . . . . . . . . . . . . . . 7 6.2.2 Attribute Names . . . . . . . . . . . . . . . . . . 7
7 Private versus Shared . . . . . . . . . . . . . . . . . . . . 8 7 Private versus Shared and Access Control . . . . . . . . . . 8
8 IMAP Protocol Changes . . . . . . . . . . . . . . . . . . . 9 8 IMAP Protocol Changes . . . . . . . . . . . . . . . . . . . 9
8.1 ANNOTATION Message Data Item in FETCH Command . . . . . . 9 8.1 Optional parameters with the SELECT/EXAMINE commands . . 9
8.2 ANNOTATION Message Data Item in FETCH Response . . . . . 10 8.2 ANNOTATION Message Data Item in FETCH Command . . . . . 10
8.3 ANNOTATION Message Data Item in STORE . . . . . . . . . . 11 8.3 ANNOTATION Message Data Item in FETCH Response . . . . . 11
8.4 ANNOTATION Message Data Item in APPEND . . . . . . . . . 13 8.4 ANNOTATION Message Data Item in STORE . . . . . . . . . 13
8.5 ANNOTATION Criterion in SEARCH . . . . . . . . . . . . . 13 8.5 ANNOTATION Message Data Item in APPEND . . . . . . . . . 14
8.6 ANNOTATION Key in SORT . . . . . . . . . . . . . . . . . 14 8.6 ANNOTATION Criterion in SEARCH . . . . . . . . . . . . . 14
8.7 ACL Rights . . . . . . . . . . . . . . . . . . . . . . . 15 8.7 ANNOTATION Key in SORT . . . . . . . . . . . . . . . . . 15
9 Interaction with MODTIME . . . . . . . . . . . . . . . . . . 15 9 Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . 15
10 Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . . 15 10 IANA Considerations . . . . . . . . . . . . . . . . . . . . . 17
11 IANA Considerations . . . . . . . . . . . . . . . . . . . . 16 10.1 Entry and Attribute Registration Template . . . . . . . 17
11.1 Entry and Attribute Registration Template . . . . . . . . 16 11 Security Considerations . . . . . . . . . . . . . . . . . . . 17
12 Security Considerations . . . . . . . . . . . . . . . . . . 17 12 References . . . . . . . . . . . . . . . . . . . . . . . . . 18
13 References . . . . . . . . . . . . . . . . . . . . . . . . . 17 13 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18
14 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . 18 14 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . 18
15 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . 18 15 Full Copyright Statement . . . . . . . . . . . . . . . . . . 19
16 Full Copyright Statement . . . . . . . . . . . . . . . . . . 18
1 Abstract 1 Abstract
The ANNOTATE extension to the Internet Message Access Protocol The ANNOTATE extension to the Internet Message Access Protocol
[IMAP4] permits clients and servers to maintain "metadata" for [IMAP4] permits clients and servers to maintain "metadata" for
messages stored in an IMAP4 mailbox. messages stored in an IMAP4 mailbox.
2 Discussion 2 Discussion
Public comments can be sent to the IETF IMAP Extensions mailing Public comments can be sent to the IETF IMAP Extensions mailing
list, <ietf-imapext@imc.org>. To subscribe, send a message to list, <ietf-imapext@imc.org>. To subscribe, send a message to
<ietf-imapext-request@imc.org> with the word SUBSCRIBE as the body. <ietf-imapext-request@imc.org> with the word SUBSCRIBE as the body.
Private comments should be sent to the authors. Private comments should be sent to the authors.
3 Conventions Used in This Document 3 Conventions Used in This Document
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [KEYWORDS]. document are to be interpreted as described in RFC 2119 [KEYWORDS].
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Formal syntax is defined using ABNF [ABNF] as modified by [IMAP4]. Formal syntax is defined using ABNF [ABNF] as modified by [IMAP4].
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In examples, "C:" and "S:" indicate lines sent by the client and In examples, "C:" and "S:" indicate lines sent by the client and
server respectively. Line breaks not preceded by a "C:" or "S:" are server respectively. Line breaks not preceded by a "C:" or "S:" are
for editorial clarity only. for editorial clarity only.
4 Document Meta-Data 4 Change History
4.1 Open Issues
At points in this document open issues are discussed, marked by the
text "<<<OPEN-ISSUE>>>". These are items which have not been
finalized. Discussion and comment is requested. Please use the
IETF IMAP Extensions mailing list, as described in section 2.
4.2 Change History Changes from -02 to -03:
1. Removed reference to status modtime item.
2. Added missing 'notify' and 'ret' dsn annotations for
/message/smtp-envelope.
3. Added requirement to store data permanently - no
'session only' annotations.
4. Removed Access Control section. Replaced with comments
on read-only/read-write mailboxes and storing private or
shared annotations.
5. Removed STORE to default .priv or .shared.
6. Added section on optional select parameters.
Changes from -01 to -02: Changes from -01 to -02:
1. Now require .pric or .shared on store operations. 1. Now require .priv or .shared on store operations.
Changes from -00 to -01: Changes from -00 to -01:
1. MODTIME moved to its own draft, which this draft now 1. MODTIME moved to its own draft, which this draft now
depends on. Thus, Conditional Annotation STORE and depends on. Thus, Conditional Annotation STORE and
related items deleted from this draft. related items deleted from this draft.
2. Private versus Shared Annotations: both are possible 2. Private versus Shared Annotations: both are possible
(separately addressable using ".priv" and ".shared" (separately addressable using ".priv" and ".shared"
suffixes). There is a per-mailbox setting for the suffixes). There is a per-mailbox setting for the
default. It is an open issue how this is viewed or default. It is an open issue how this is viewed or
changed by the client. changed by the client.
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5. Restricted including ANNOTATION data in unsolicited responses 5. Restricted including ANNOTATION data in unsolicited responses
until the client uses it first. (Open issue as to if needed). until the client uses it first. (Open issue as to if needed).
6. Examples now only use valid entries and attributes. 6. Examples now only use valid entries and attributes.
7. Updated Security Considerations. 7. Updated Security Considerations.
8. Content-Type now defaults to text/plain. 8. Content-Type now defaults to text/plain.
9. Open Issue: Shared vs. private annotations. 9. Open Issue: Shared vs. private annotations.
10. Open issue: Annotation Modtime untagged response or VALIDTIME 10. Open issue: Annotation Modtime untagged response or VALIDTIME
FETCH data. FETCH data.
11. Open issue: Conditional annotation STORE. 11. Open issue: Conditional annotation STORE.
12. ANNOTATION criterion available if both "ANNOTATE" and "SORT" 12. ANNOTATION criterion available if both "ANNOTATE" and "SORT"
in CAPABILITY command response.
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in CAPABILITY command response.
13. Prohibition on annotations in lieu of base spec functionality. 13. Prohibition on annotations in lieu of base spec functionality.
14. Specified required ACL rights. 14. Specified required ACL rights.
15. ANNOTATION message data item in APPEND. 15. ANNOTATION message data item in APPEND.
16. ANNOTATION-MODTIME message data item in STATUS. 16. ANNOTATION-MODTIME message data item in STATUS.
17. Replaced ATOM_CHAR with utf8-char. 17. Replaced ATOM_CHAR with utf8-char.
18. Updated other ABNF entries. 18. Updated other ABNF entries.
5 Introduction and Overview 5 Introduction and Overview
The ANNOTATE extension is present in any IMAP4 implementation which The ANNOTATE extension is present in any IMAP4 implementation which
returns "ANNOTATE" as one of the supported capabilities in the returns "ANNOTATE" as one of the supported capabilities in the
CAPABILITY command response. CAPABILITY response.
The ANNOTATE extension adds a new message data item to the FETCH and The ANNOTATE extension adds a new message data item to the FETCH and
STORE commands, as well as adding SEARCH and SORT keys and APPEND STORE commands, as well as adding SEARCH and SORT keys and an APPEND
and STATUS modifiers. modifier.
This extension makes the following changes to the IMAP4 protocol: This extension makes the following changes to the IMAP4 protocol:
a) adds a new ANNOTATION message data item for use in FETCH a) adds a new ANNOTATION message data item for use in FETCH
b) adds a new ANNOTATION message data item for use in STORE b) adds a new ANNOTATION message data item for use in STORE
c) adds a new ANNOTATION search criterion for use in SEARCH c) adds a new ANNOTATION search criterion for use in SEARCH
d) adds a new ANNOTATION sort key for use in SORT extension d) adds a new ANNOTATION sort key for use in SORT extension
e) adds a new ANNOTATION data item for use in APPEND e) adds a new ANNOTATION data item for use in APPEND
f) adds a extension mechanism for adding parameters to the
SELECT/EXAMINE commands and defines the ANNOTATE parameter
The data model used for the storage of annotations is based on that The data model used for the storage of annotations is based on that
of the Application Configuration Access Protocol [ACAP]. Note that of the Application Configuration Access Protocol [ACAP]. Note that
there is no inheritance in annotations. there is no inheritance in annotations.
Clients MUST NOT use annotations in lieu of equivalent IMAP base Clients MUST NOT use annotations in lieu of equivalent IMAP base
specification facilities. For example, use of a "seen" flag in the specification facilities. For example, use of a "seen" flag in the
vendor namespace together with ".PEEK" in fetches. Such behavior vendor namespace together with ".PEEK" in fetches. Such behaviour
would significantly reduce IMAP interoperability. would significantly reduce IMAP interoperability.
<<<OPEN-ISSUE>>> If a server supports annotations, then it MUST store all annotation
data permanently, i.e. there is no concept of 'session only'
annotations that would correspond to the behaviour of 'session'
flags as defined in the IMAP base specification. The exception to
this is IMAP flags (which are accessible directly through
annotations) which may be 'session only' as determined by the FLAGS
and PERMANENTFLAGS responses to a SELECT or EXAMINE command.
A possible exception to this rule is the potential use of annotation This extension also introduces a generalised mechanism for adding
flags in lieu of or as an alternate means of accessing IMAP flags. parameters to the SELECT or EXAMINE commands. It is anticipated
that other extensions may want to utilise this, so it is not
strictly dependent on the ANNOTATE extension being present.
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The rest of this document describes the data model and protocol The rest of this document describes the data model and protocol
changes more rigorously. changes more rigorously.
6 Data Model 6 Data Model
6.1 Overview 6.1 Overview
The data model used in ANNOTATE is that of a uniquely named entry The data model used in ANNOTATE is that of a uniquely named entry
which contains a set of standard attributes. A single coherent unit which contains a set of standard attributes. A single coherent unit
of "metadata" for a message is stored as a single entry, made up of of "metadata" for a message is stored as a single entry, made up of
several attributes. several attributes.
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For example, a comment added to a message has an entry name of For example, a comment added to a message has an entry name of
"/message/comment". This entry is composed of several attributes "/message/comment". This entry is composed of several attributes
such as "value", "modtime", etc. which contain the properties and such as "value", "size", etc. which contain the properties and data
data of the entry. of the entry.
The protocol changes to IMAP described below allow a client to The protocol changes to IMAP described below allow a client to
access or change the values of any attributes in any entries in a access or change the values of any attributes in any entries in a
message annotation, assuming it has sufficient access rights to do message annotation, assuming it has sufficient access rights to do
so (see section 8.7 for specifics). so (see Section 7 for specifics).
6.2 Namespace of Entries and Attributes 6.2 Namespace of Entries and Attributes
Each message annotation is made up of a set of entries. Each entry Each message annotation is made up of a set of entries. Each entry
has a hierarchical name in UTF-8, with each component of the name has a hierarchical name in UTF-8, with each component of the name
separated by a slash ("/"). separated by a slash ("/").
Each entry is made up of a set of attributes. Each attribute has a Each entry is made up of a set of attributes. Each attribute has a
hierarchical name in UTF-8, with each component of the name hierarchical name in UTF-8, with each component of the name
separated by a period ("."). separated by a period (".").
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a BAD response in any IMAP commands where they are used. a BAD response in any IMAP commands where they are used.
Use of non-visible UTF-8 characters in entry and attribute names is Use of non-visible UTF-8 characters in entry and attribute names is
strongly discouraged. strongly discouraged.
This specification defines an initial set of entry and attribute This specification defines an initial set of entry and attribute
names available for use in message annotations. In addition, an names available for use in message annotations. In addition, an
extension mechanism is described to allow additional names to be extension mechanism is described to allow additional names to be
added for extensibility. added for extensibility.
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6.2.1 Entry Names 6.2.1 Entry Names
Entry names MUST be specified in a standards track or IESG approved Entry names MUST be specified in a standards track or IESG approved
experimental RFC, or fall under the vendor namespace. See section experimental RFC, or fall under the vendor namespace. See Section
11.1 for the registration template. 10.1 for the registration template.
/message /message
Defines the top-level of entries associated with an entire Defines the top-level of entries associated with an entire
message. This entry itself does not contain any attributes. message. This entry itself does not contain any attributes.
/message/comment /message/comment
Defines a comment or note associated with an entire message. Defines a comment or note associated with an entire message.
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/message/flags /message/flags
Defines the top-level of entries for client-use flags associated Defines the top-level of entries for flags associated with an
with an entire message. All sub-entries are maintained entirely entire message. The "value" attribute of each of the entries
by the client. There is no implicit change to any flag by the described below must be either "1", "0" or NIL. "1" corresponds
server. to the flag being set.
/message/flags/answered
/message/flags/flagged
/message/flags/deleted
/message/flags/seen
/message/flags/draft
/message/flags/recent
These correspond to the standard IMAP flags.
/message/flags/redirected /message/flags/redirected
/message/flags/forwarded /message/flags/forwarded
Defines client-use flags for an entire message. The "value" The 'redirected' flag indicates that a message has been handed
attribute of these entries must be either "1", "0" or NIL. The off to someone else, by resending the message with minimal
'redirected' flag indicates that a message has been handed off
to someone else, by resending the message with minimal
alterations, and in such a way that a reply by the new recipient alterations, and in such a way that a reply by the new recipient
is addressed to the original author, not the user who performed is addressed to the original author, not the user who performed
the redirection. The 'forwarded' flag indicates the message was the redirection. The 'forwarded' flag indicates the message was
resent to another user, embedded within or attached to a new resent to another user, embedded within or attached to a new
message. message.
/message/smtp-envelope /message/smtp-envelope
Defines the top-level of entries which together describe the Defines the top-level of entries which together describe the
SMTP envelope used in delivery of the message. There are no SMTP envelope used in delivery of the message. There are no
attributes at this level. The client SHOULD NOT modify the attributes at this level. The client SHOULD NOT modify the
/message/smtp-envelope entry or any sub-entries or any of their /message/smtp-envelope entry or any sub-entries or any of their
attributes, except in messages which have the DRAFT flag set. attributes, except in messages which have the DRAFT flag set.
/message/smtp-envelope/from /message/smtp-envelope/from
/message/smtp-envelope/to /message/smtp-envelope/to
/message/smtp-envelope/orcpt /message/smtp-envelope/orcpt
/message/smtp-envelope/envid /message/smtp-envelope/envid
/message/smtp-envelope/notify
/message/smtp-envelope/ret
Contains the properties of the SMTP envelope: 'from' is the Contains the properties of the SMTP envelope: 'from' is the
return-path of the message; 'to' is the recipient of the return-path of the message; 'to' is the recipient of the
message. 'orcpt' and 'envid' contain the original recipient and message. 'notify', 'orcpt', 'ret' and 'envid' contain the
envelope ID as specified in [SMTP-DSN].
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notification options, original recipient, envelope ID and return
options as specified in [SMTP-DSN].
/message/subject /message/subject
Contains text supplied by the message recipient, to be used by Contains text supplied by the message recipient, to be used by
the client instead of the original message Subject. the client instead of the original message Subject.
/message/vendor/<vendor-token> /message/vendor/<vendor-token>
Defines the top-level of entries associated with an entire Defines the top-level of entries associated with an entire
message as created by a particular product of some vendor. message as created by a particular product of some vendor.
These sub-entries can be used by vendors to provide These sub-entries can be used by vendors to provide
client-specific attributes. The vendor-token MUST be registered client-specific attributes. The vendor-token MUST be registered
with IANA. with IANA.
/body/<part-specifier> /body/<part-specifier>
Defines the top-level of entries associated with a specific body Defines the top-level of entries associated with a specific body
part of a message. This entry itself does not contain any part of a message. This entry itself does not contain any
attributes. The part-specifier uses the same part specifier attributes. The part-specifier uses the same part specifier
syntax as the BODY message data item in the FETCH command syntax as the BODY message data item in the FETCH command
[IMAP4]. [IMAP4].
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/body/<part-specifier>/comment /body/<part-specifier>/comment
Defines a comment or note associated with a specific body part Defines a comment or note associated with a specific body part
of a message. of a message.
/body/<part-specifier>/flags /body/<part-specifier>/flags
Defines the top-level of entries associated with flag state for Defines the top-level of entries associated with flag state for
a specific body part of a message. All sub-entries are a specific body part of a message. All sub-entries are
maintained entirely by the client. There is no implicit change maintained entirely by the client. There is no implicit change
to any flag by the server. to any flag by the server.
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Defines the top-level of entries associated with a specific body Defines the top-level of entries associated with a specific body
part of a message as created by a particular product of some part of a message as created by a particular product of some
vendor. This entry can be used by vendors to provide client vendor. This entry can be used by vendors to provide client
specific attributes. The vendor-token MUST be registered with specific attributes. The vendor-token MUST be registered with
IANA. IANA.
6.2.2 Attribute Names 6.2.2 Attribute Names
Attribute names MUST be specified in a standards track or IESG Attribute names MUST be specified in a standards track or IESG
approved experimental RFC, or fall under the vendor namespace. See approved experimental RFC, or fall under the vendor namespace. See
section 11.1 for the registration template. Section 10.1 for the registration template.
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All attribute names implicitly have a ".priv" and a ".shared" suffix All attribute names implicitly have a ".priv" and a ".shared" suffix
which maps to private and shared versions of the entry. Searching which maps to private and shared versions of the entry. Searching
or fetching without using either suffix includes both. Storing or fetching without using either suffix includes both. The client
without using either suffix stores into the default. The default is MUST specify either a ".priv" or ".shared" suffix when storing an
set per-mailbox. See section 7 for more information. annotation.
value value
The data value of the attribute. The data value of the attribute.
size size
The size of the value, in octets. Set automatically by the The size of the value, in octets. Set automatically by the
server, read-only to clients. server, read-only to clients.
modtime
An opaque value set by the server when this entry is modified.
It can be used by the client to request notification of which
entries have changed relative to that of a known entry. In
addition to its use in disconnected/synchronization operations,
it can also be helpful in determining which entries have changed
while a client is connected. (The value is intended to be used
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only for comparisons within a server, not as an accurate
timestamp.) It is described more fully in section 3.1.1 of
[ACAP].
content-type content-type
A MIME [MIME] content type and subtype that describes the nature A MIME [MIME] content type and subtype that describes the nature
of the content of the "value" attribute. If not present, a of the content of the "value" attribute. If not present, a
value of "text/plain; charset=utf8" is assumed. value of "text/plain; charset=utf8" is assumed.
vendor.<vendor-token> vendor.<vendor-token>
Defines an attribute associated with a particular product of Defines an attribute associated with a particular product of
some vendor. This attribute can be used by vendors to provide some vendor. This attribute can be used by vendors to provide
client specific attributes. The vendor-token MUST be registered client specific attributes. The vendor-token MUST be registered
with IANA. with IANA.
7 Private versus Shared 7 Private versus Shared and Access Control
Some IMAP mailboxes are private, accessible only to the owning user. Some IMAP mailboxes are private, accessible only to the owning user.
Other mailboxes are not, either because the owner has set an ACL Other mailboxes are not, either because the owner has set an ACL
[ACL-EXT] which permits access by other users, or because it is a [ACL-EXT] which permits access by other users, or because it is a
shared mailbox. shared mailbox.
This raises the issue of shared versus private annotations. This raises the issue of shared versus private annotations.
If all annotations are private, it is impossible to set annotations If all annotations are private, it is impossible to set annotations
in a shared or otherwise non-private mailbox that are visible to in a shared or otherwise non-private mailbox that are visible to
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If all annotations are shared, it is impossible to use annotations If all annotations are shared, it is impossible to use annotations
for private notes on messages in shared mailboxes. Also, modifying for private notes on messages in shared mailboxes. Also, modifying
an ACL to permit access to a mailbox by other users may an ACL to permit access to a mailbox by other users may
unintentionally expose private information. unintentionally expose private information.
There are also situations in which both shared and private There are also situations in which both shared and private
annotations are useful. For example, an administrator may want to annotations are useful. For example, an administrator may want to
set shared annotations on messages in a shared folder, which set shared annotations on messages in a shared folder, which
individual users may wish to supplement with additional notes. individual users may wish to supplement with additional notes.
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If shared and private annotations are to coexist, we need a clear If shared and private annotations are to coexist, we need a clear
way to differentiate them. Also, it should be as easy as possible way to differentiate them. Also, it should be as easy as possible
for a client to access both and not overlook either. There is also for a client to access both and not overlook either. There is also
a danger in allowing a client to store an annotation without knowing a danger in allowing a client to store an annotation without knowing
if it is shared or private. if it is shared or private.
This document proposes two standard suffixes for all attributes: This document proposes two standard suffixes for all attributes:
".shared" and ".priv". A search, fetch, or sort which specifies ".shared" and ".priv". A search, fetch, or sort which specifies
neither uses both. Store operations MUST explicitly use .priv or neither uses both. Store operations MUST explicitly use .priv or
Gellens & Daboo Expires May 2002 [Page 8] Internet Draft IMAP ANNOTATE Extension November 2001
.shared suffixes. .shared suffixes.
A user can only store and fetch private annotations on messages in
any mailbox which they can SELECT or EXAMINE, including ones which
only open READ-ONLY. A user can only store and fetch shared
annotations on messages in any mailbox that they can SELECT and
which opens READ-WRITE. If a client attempts to store or fetch a
shared annotation on a READ-ONLY mailbox, the server MUST respond
with a NO response.
8 IMAP Protocol Changes 8 IMAP Protocol Changes
8.1 ANNOTATION Message Data Item in FETCH Command 8.1 Optional parameters with the SELECT/EXAMINE commands
This extension adds the ability to include one or more parameters
with the IMAP SELECT or EXAMINE commands, to turn on or off certain
standard behaviour, or to add new optional behaviours required for a
particular extension. It is anticipated that other extensions may
want to use this facility, so a generalised approach is given here.
This facility is not dependent on the presence of the ANNOTATE
extension - other extensions can use it with a server that does not
implement ANNOTATE.
Optional parameters to the SELECT or EXAMINE commands are added as a
parenthesised list of atoms or strings, and appear after the mailbox
name in the standard SELECT or EXAMINE command. The order of
individual parameters is arbitrary. Individual parameters may
consist of one or more atoms or strings in a specific order. If a
parameter consists of more than one atom or string, it MUST appear
in its own parenthesised list. Any parameter not defined by
extensions that the server supports MUST be rejected with a NO
response.
Example:
C: a SELECT INBOX (ANNOTATE)
S: ...
S: a OK SELECT complete
In the above example, a single parameter is used with the
SELECT command.
C: a EXAMINE INBOX (ANNOTATE (RESPONSES "UID Responses") MODTIME)
S: ...
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S: a OK EXAMINE complete
In the above example, three parameters are used with the
EXAMINE command. The second parameter consists of two
items: an atom followed by a quoted string.
C: a SELECT INBOX (BLURDYBLOOP)
S: a NO Unknown parameter in SELECT command
In the above example, a parameter not supported by the
server is incorrectly used.
The ANNOTATE extension defines a single optional select parameter
"ANNOTATE", which is used to turn on unsolicited responses for
annotations as described in Section 8.3.
8.2 ANNOTATION Message Data Item in FETCH Command
This extension adds an ANNOTATION message data item to the FETCH This extension adds an ANNOTATION message data item to the FETCH
command. This allows clients to retrieve annotations for a range of command. This allows clients to retrieve annotations for a range of
messages in the currently selected mailbox. messages in the currently selected mailbox.
ANNOTATION <entry-specifier> <attribute-specifier> ANNOTATION <entry-specifier> <attribute-specifier>
The ANNOTATION message data item, when used by the client in the The ANNOTATION message data item, when used by the client in the
FETCH command, takes an entry specifier and an attribute FETCH command, takes an entry specifier and an attribute
specifier. specifier.
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"*" and "%" wildcard characters can be used in either specifier to "*" and "%" wildcard characters can be used in either specifier to
match one or more characters at that position, with the exception match one or more characters at that position, with the exception
that "%" does not match the hierarchy delimiter for the specifier it that "%" does not match the hierarchy delimiter for the specifier it
appears in (that is, "/" for an entry specifier or "." for an appears in (that is, "/" for an entry specifier or "." for an
attribute specifier). Thus an entry specifier of "/message/%" attribute specifier). Thus an entry specifier of "/message/%"
matches entries such as "/message/comment" and "/message/subject", matches entries such as "/message/comment" and "/message/subject",
but not "/message/flags/redirected". but not "/message/flags/redirected".
Examples: Examples:
C: a FETCH 1 (ANNOTATION ("/message/*" ("value.priv" C: a FETCH 1 (ANNOTATION ("/message/*" ("value.priv"
"modtime.priv"))) "size.priv")))
S: * 1 FETCH (ANNOTATION S: * 1 FETCH (ANNOTATION
(("/message/comment" ("value.priv" "My comment" (("/message/comment" ("value.priv" "My comment"
"modtime.priv" "20000704000001"))
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"size.priv" "10"))
("/message/subject" ("value.priv" "Rhinoceroses!" ("/message/subject" ("value.priv" "Rhinoceroses!"
"modtime.priv" "19991231235959")) "size.priv" "13"))
("/message/vendor/eudora/label.priv" ("/message/vendor/foobar/label.priv"
("value.priv" "label43" ("value.priv" "label43"
"modtime.priv" "20000705101502")) "size.priv" "7"))
("/message/vendor/eudora/personality" ("/message/vendor/foobar/personality"
("value.priv" "Tallulah Bankhead" ("value.priv" "Tallulah Bankhead"
"modtime.priv" "20000705101558")))) "size.priv" "17"))))
S: a OK Fetch complete S: a OK Fetch complete
Gellens & Daboo Expires May 2002 [Page 9] Internet Draft IMAP ANNOTATE Extension November 2001 In the above example, the contents of the private "value" and "size"
attributes for any entries in the "/message" hierarchy are requested
In the above example, the contents of the private "value" and by the client and returned by the server.
"modtime" attributes for any entries in the "/message" hierarchy are
requested by the client and returned by the server.
C: a FETCH 1 (ANNOTATION ("/message/%" "value.shared")) C: a FETCH 1 (ANNOTATION ("/message/%" "value.shared"))
S: * 1 FETCH (ANNOTATION S: * 1 FETCH (ANNOTATION
(("/message/comment" ("value.shared" "Patch Mangler")) (("/message/comment" ("value.shared" "Patch Mangler"))
("/message/subject" ("value.shared" "Patches? We don' ("/message/subject" ("value.shared" "Patches? We don'
need no steenkin patches!")))) need no steenkin patches!"))))
S: a OK Fetch complete S: a OK Fetch complete
In the above example, the contents of the shared "value" In the above example, the contents of the shared "value"
attributes for entries at the top level only of the attributes for entries at the top level only of the
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S: * 1 FETCH (ANNOTATION S: * 1 FETCH (ANNOTATION
(("/message/comment" ("value.priv" "What a chowder-head")) (("/message/comment" ("value.priv" "What a chowder-head"))
("/message/subject" ("value.priv" "How to crush beer ("/message/subject" ("value.priv" "How to crush beer
cans")))) cans"))))
S: a OK Fetch complete S: a OK Fetch complete
In the above example, the contents of the private "value" attributes In the above example, the contents of the private "value" attributes
for the two entries "/message/comment" and "/message/subject" are for the two entries "/message/comment" and "/message/subject" are
requested by the client and returned by the server. requested by the client and returned by the server.
8.2 ANNOTATION Message Data Item in FETCH Response 8.3 ANNOTATION Message Data Item in FETCH Response
The ANNOTATION message data item in the FETCH response displays The ANNOTATION message data item in the FETCH response displays
information about annotations in a message. information about annotations in a message.
ANNOTATION parenthesised list ANNOTATION parenthesised list
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The response consists of a list of entries, each of which has a The response consists of a list of entries, each of which has a
list of attribute-value pairs. list of attribute-value pairs.
Examples: Examples:
C: a FETCH 1 (ANNOTATION ("/message/comment" "value")) C: a FETCH 1 (ANNOTATION ("/message/comment" "value"))
S: * 1 FETCH (ANNOTATION ("/message/comment" S: * 1 FETCH (ANNOTATION ("/message/comment"
("value.priv" "My comment" ("value.priv" "My comment"
"value.shared" NIL))) "value.shared" NIL)))
S: a OK Fetch complete S: a OK Fetch complete
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In the above example, a single entry with a single attribute-value In the above example, a single entry with a single attribute-value
pair is returned by the server. Since the client did not specify a pair is returned by the server. Since the client did not specify a
".shared" or ".priv" suffix, both are returned. Only the private ".shared" or ".priv" suffix, both are returned. Only the private
attribute has a value (the shared value is NIL). attribute has a value (the shared value is NIL).
C: a FETCH 1 (ANNOTATION C: a FETCH 1 (ANNOTATION
(("/message/comment" "/message/subject") "value")) (("/message/comment" "/message/subject") "value"))
S: * 1 FETCH (ANNOTATION S: * 1 FETCH (ANNOTATION
(("/message/comment" ("value.priv" "My comment" (("/message/comment" ("value.priv" "My comment"
"value.shared" NIL)) "value.shared" NIL))
("/message/subject" ("value.priv" "My subject" ("/message/subject" ("value.priv" "My subject"
"value.shared" NIL)))) "value.shared" NIL))))
S: a OK Fetch complete S: a OK Fetch complete
In the above example, two entries each with a single attribute-value In the above example, two entries each with a single attribute-value
pair are returned by the server. Since the client did not specify a pair are returned by the server. Since the client did not specify a
".shared" or ".priv" suffix, both are returned. Only the private ".shared" or ".priv" suffix, both are returned. Only the private
attributes have values; the shared attributes are NIL. attributes have values; the shared attributes are NIL.
C: a FETCH 1 (ANNOTATION C: a FETCH 1 (ANNOTATION
("/message/comment" ("value" "modtime"))) ("/message/comment" ("value" "size")))
S: * 1 FETCH (ANNOTATION S: * 1 FETCH (ANNOTATION
(("/message/comment" (("/message/comment"
("value.priv" "My comment" ("value.priv" "My comment"
"value.shared" NIL "value.shared" NIL
"modtime.priv" "19990203205432" "size.priv" "10"
"modtime.shared" NIL)))) "size.shared" 0))))
S: a OK Fetch complete S: a OK Fetch complete
In the above example, a single entry with two attribute-value pairs In the above example, a single entry with two attribute-value pairs
is returned by the server. Since the client did not specify a is returned by the server. Since the client did not specify a
".shared" or ".priv" suffix, both are returned. Only the private ".shared" or ".priv" suffix, both are returned. Only the private
attributes have values; the shared attributes are NIL. attributes have values; the shared attributes are NIL.
Servers SHOULD send ANNOTATION message data items in unsolicited
FETCH responses if an annotation entry is changed by a third-party.
This allows servers to keep clients updated with changes to
annotations by other clients.
Servers MUST NOT include ANNOTATION data in unsolicited responses Servers MUST NOT include ANNOTATION data in unsolicited responses
until the client has used ANNOTATION data in a FETCH command. This unless the client used the ANNOTATE select parameter when it issued
restriction avoids sending ANNOTATION data to a client until the the last SELECT or EXAMINE command. This restriction avoids sending
client has shown it is capable of handling it. ANNOTATION data to a client unless the client explicitly asks for
it.
<<<OPEN-ISSUE>>> Servers SHOULD send ANNOTATION message data items in unsolicited
Is this prohibition really necessary? FETCH responses if an annotation entry is changed by a third-party,
* OK [ANNOTATIONS FLAGS MODTIME <modtime> <set>] Gellens & Daboo Expires June 2002 [Page 12] Internet Draft IMAP ANNOTATE Extension January 2002
8.3 ANNOTATION Message Data Item in STORE and the ANNOTATE select parameter was used. This allows servers to
keep clients updated with changes to annotations by other clients.
Gellens & Daboo Expires May 2002 [Page 11] Internet Draft IMAP ANNOTATE Extension November 2001 8.4 ANNOTATION Message Data Item in STORE
ANNOTATION <parenthesised entry-attribute-value list> ANNOTATION <parenthesised entry-attribute-value list>
Sets the specified list of entries by adding or replacing the Sets the specified list of entries by adding or replacing the
specified attributes with the values provided. Clients can use specified attributes with the values provided. Clients can use
NIL for values of attributes it wants to remove from entries. NIL for values of attributes it wants to remove from entries.
The ANNOTATION message data item used with the STORE command has an The ANNOTATION message data item used with the STORE command has an
implicit ".SILENT" behavior. This means the server does not implicit ".SILENT" behaviour. This means the server does not
generate an untagged FETCH in response to the STORE command and generate an untagged FETCH in response to the STORE command and
assumes that the client updates its own cache if the command assumes that the client updates its own cache if the command
succeeds. succeeds.
Examples: Examples:
C: a STORE 1 ANNOTATION ("/message/comment" C: a STORE 1 ANNOTATION ("/message/comment"
("value.priv" "My new comment")) ("value.priv" "My new comment"))
S: a OK Store complete S: a OK Store complete
In the above example, the entry "/message/comment" is created (if In the above example, the entry "/message/comment" is created (if
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S: a OK Store complete S: a OK Store complete
In the above example, the entries "/message/comment" and In the above example, the entries "/message/comment" and
"/message/subject" are created (if not already present) and the "/message/subject" are created (if not already present) and the
private attribute "value" is created for each entry if not already private attribute "value" is created for each entry if not already
present, or replaced if they exist. present, or replaced if they exist.
Multiple attributes can be set in a single STORE command by listing Multiple attributes can be set in a single STORE command by listing
multiple attribute-value pairs in the entry list. multiple attribute-value pairs in the entry list.
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Example: Example:
C: a STORE 1 ANNOTATION ("/message/comment" C: a STORE 1 ANNOTATION ("/message/comment"
("value.priv" "My new comment" ("value.priv" "My new comment"
"vendor.foobar.priv" "foo's bar")) "vendor.foobar.priv" "foo's bar"))
S: a OK Store complete S: a OK Store complete
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In the above example, the entry "/message/comment" is created (if In the above example, the entry "/message/comment" is created (if
not already present) and the private attributes "value" and not already present) and the private attributes "value" and
"vendor.foobar" are created if not already present, or replaced if "vendor.foobar" are created if not already present, or replaced if
they exist. they exist.
8.4 ANNOTATION Message Data Item in APPEND 8.5 ANNOTATION Message Data Item in APPEND
ANNOTATION <parenthesised entry-attribute-value list> ANNOTATION <parenthesised entry-attribute-value list>
Sets the specified list of entries and attributes in the Sets the specified list of entries and attributes in the
resulting message. resulting message.
Example: Example:
C: a APPEND drafts ANNOTATION ("/message/comment" C: a APPEND drafts ANNOTATION ("/message/comment"
("value.priv" "Don't send until we hear from Sally")) {310} ("value.priv" "Don't send until we hear from Sally")) {310}
S: + Ready for literal data S: + Ready for literal data
C: MIME-Version: 1.0 C: MIME-Version: 1.0
... ...
C: C:
S: a OK APPEND completed S: a OK APPEND completed
In the above example, a comment with a private value is added to a In the above example, a comment with a private value is added to a
new message appended to the mailbox. The ellipsis represents the new message appended to the mailbox. The ellipsis represents the
bulk of the message. bulk of the message.
8.5 ANNOTATION Criterion in SEARCH 8.6 ANNOTATION Criterion in SEARCH
The ANNOTATION criterion for the SEARCH command allows a client to The ANNOTATION criterion for the SEARCH command allows a client to
search for a specified string in the value of an annotation entry of search for a specified string in the value of an annotation entry of
a message. a message.
ANNOTATION <entry-name> <attribute-name> <value> ANNOTATION <entry-name> <attribute-name> <value>
Messages that have annotations with entries matching <entry-name> Messages that have annotations with entries matching <entry-name>
and attributes matching <attribute-name> and the specified string and attributes matching <attribute-name> and the specified string
<value> in their values are returned in the SEARCH results. The "*" <value> in their values are returned in the SEARCH results. The "*"
character can be used in the entry or attribute name fields to match character can be used in the entry or attribute name fields to match
any content in those items. The "%" character can be used in the any content in those items. The "%" character can be used in the
entry or attribute name fields to match a single level of hierarchy entry or attribute name fields to match a single level of hierarchy
only. only.
Examples: Examples:
C: a SEARCH ANNOTATION "/message/comment" "value" "IMAP4" C: a SEARCH ANNOTATION "/message/comment" "value" "IMAP4"
S: * SEARCH 2 3 5 7 11 13 17 19 23 S: * SEARCH 2 3 5 7 11 13 17 19 23
S: a OK Search complete S: a OK Search complete
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In the above example, the message numbers of any messages containing In the above example, the message numbers of any messages containing
the string "IMAP4" in the shared or private "value" attribute of the the string "IMAP4" in the shared or private "value" attribute of the
"/message/comment" entry are returned in the search results. "/message/comment" entry are returned in the search results.
C: a SEARCH ANNOTATION "*" "*" "IMAP4" C: a SEARCH ANNOTATION "*" "*" "IMAP4"
S: * SEARCH 1 2 3 5 8 13 21 34 S: * SEARCH 1 2 3 5 8 13 21 34
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S: a OK Search complete S: a OK Search complete
In the above example, the message numbers of any messages containing In the above example, the message numbers of any messages containing
the string "IMAP4" in any attribute (public or private) of any entry the string "IMAP4" in any attribute (public or private) of any entry
are returned in the search results. are returned in the search results.
A special case exists when the "modtime" attribute is used as the 8.7 ANNOTATION Key in SORT
<attribute-name> parameter in the ANNOTATION search criterion. In
this case the server matches messages when the corresponding
"modtime" value is greater than the value supplied in the ANNOTATION
criterion. This allows a client, for example, to find out which
messages contain annotations that have changed since the last time
it updated its disconnected cache.
Example:
C: a SEARCH ANNOTATION "*" "modtime" "1999101713283412"
S: * SEARCH 1 3 6 10 15 21 28 36 45 55
S: a OK Search complete
In the above example, the message numbers of any messages whose
"modtime" attribute of any entry exceeds the value
"1999101713283412" are returned in the search results. Both public
and private attributes are searched.
8.6 ANNOTATION Key in SORT
The ANNOTATION criterion for the SORT command [SORT-EXT] instructs The ANNOTATION criterion for the SORT command [SORT-EXT] instructs
the server to return the message numbers or UIDs of a mailbox, the server to return the message numbers or UIDs of a mailbox,
sorted using the values of the specified annotations. The sorted using the values of the specified annotations. The
ANNOTATION criterion is available if the server returns both ANNOTATION criterion is available if the server returns both
"ANNOTATE" and "SORT" as supported capabilities in the CAPABILITY "ANNOTATE" and "SORT" as supported capabilities in the CAPABILITY
command response. command response.
ANNOTATION <entry-name> <attribute-name> ANNOTATION <entry-name> <attribute-name>
Messages are sorted using the values of the <attribute-name> Messages are sorted using the values of the <attribute-name>
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S: * SORT 2 3 4 5 1 11 10 6 7 9 8 S: * SORT 2 3 4 5 1 11 10 6 7 9 8
S: a OK Sort complete S: a OK Sort complete
In the above example, the message numbers of all messages are In the above example, the message numbers of all messages are
returned, sorted according to the shared "value" attribute of the returned, sorted according to the shared "value" attribute of the
"/message/subject" entry. "/message/subject" entry.
Note that the ANNOTATION sort key must include a fully specified Note that the ANNOTATION sort key must include a fully specified
entry and attribute -- wildcards are not allowed. entry and attribute -- wildcards are not allowed.
Gellens & Daboo Expires May 2002 [Page 14] Internet Draft IMAP ANNOTATE Extension November 2001 9 Formal Syntax
8.7 ACL Rights
The "r" right, as specified in [ACL-EXT], is required to use
annotations in any command other than STORE.
The "w" right is needed to use shared annotations in the STORE
command.
The "s" right is needed to use private annotations in the STORE
command.
<<<OPEN-ISSUE>>>
Should there be a special ACL bit to indicate if annotations are
shared or private by default for a mailbox?
9 Interaction with MODTIME
The [MODTIME-EXT] document defines an IMAP extension which allows
clients to be supplied with an opaque value called a modtime. The
specific value is server dependent, but has the property that all
such values issued by a server are numerically increasing with
respect to the order of changes. That is, for any two items, the
one that was modified later has a greater modtime.
10 Formal Syntax
The following syntax specification uses the Augmented Backus-Naur The following syntax specification uses the Augmented Backus-Naur
Form (ABNF) notation as specified in [ABNF]. Form (ABNF) notation as specified in [ABNF].
Non-terminals referenced but not defined below are as defined by Non-terminals referenced but not defined below are as defined by
[IMAP4]. [IMAP4].
Except as noted otherwise, all alphabetic characters are case- Except as noted otherwise, all alphabetic characters are case-
insensitive. The use of upper or lower case characters to define insensitive. The use of upper or lower case characters to define
Gellens & Daboo Expires June 2002 [Page 15] Internet Draft IMAP ANNOTATE Extension January 2002
token strings is for editorial clarity only. Implementations MUST token strings is for editorial clarity only. Implementations MUST
accept these strings in a case-insensitive fashion. accept these strings in a case-insensitive fashion.
append = "APPEND" SP mailbox [SP flag-list] [SP date-time] append = "APPEND" SP mailbox [SP flag-list] [SP date-time]
[SP "ANNOTATION" SP att-annotate] [SP "ANNOTATION" SP att-annotate]
SP literal SP literal
; modifies original IMAP4 APPEND command ; modifies original IMAP4 APPEND command
att-annotate = "(" entry-att *(SP entry-att) ")" att-annotate = "(" entry-att *(SP entry-att) ")"
fetch-att =/ fetch-annotate fetch-att =/ fetch-annotate
; modifies original IMAP4 fetch-att ; modifies original IMAP4 fetch-att
fetch-annotate = "ANNOTATION" SP "(" entries SP attribs ")" fetch-annotate = "ANNOTATION" SP "(" entries SP attribs ")"
fetch-ann-resp = "ANNOTATION" SP "(" entry-att *(SP entry-att) ")" fetch-ann-resp = "ANNOTATION" SP "(" entry-att *(SP entry-att) ")"
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store-att-flags =/ att-annotate store-att-flags =/ att-annotate
; modifies original IMAP4 STORE command ; modifies original IMAP4 STORE command
search-key =/ search-annotate search-key =/ search-annotate
; modifies original IMAP4 search-key ; modifies original IMAP4 search-key
search-annotate = "ANNOTATION" SP entry-match SP attrib-match search-annotate = "ANNOTATION" SP entry-match SP attrib-match
SP value SP value
sort-key =/ sort-annotate sort-key =/ sort-annotate
; modifies original ; modifies original
; draft-crispin-imapext-sort-xx.txt sort-key ; draft-crispin-imapext-sort-xx.txt sort-key
sort-annotate = "ANNOTATION" SP entry SP attrib sort-annotate = "ANNOTATION" SP entry SP attrib
status =/ "ANNOTATION-MODTIME"
; modifies original IMAP4 STATUS command
entries = entry-match / entries = entry-match /
"(" entry-match *(SP entry-match) ")" "(" entry-match *(SP entry-match) ")"
attribs = attrib-match / attribs = attrib-match /
"(" attrib-match *(SP attrib-match) ")" "(" attrib-match *(SP attrib-match) ")"
entry-att = entry SP "(" att-value *(SP att-value) ") entry-att = entry SP "(" att-value *(SP att-value) ")
att-value = attrib SP value att-value = attrib SP value
utf8-char = %x01-FF utf8-char = %x01-FF
; any character, excluding NUL ; any character, excluding NUL
atom-slash = any utf8-char except "/" atom-slash = any utf8-char except "/"
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entry = DQUOTE 1*atom-slash *("/" 1*atom-slash) DQUOTE entry = DQUOTE 1*atom-slash *("/" 1*atom-slash) DQUOTE
entry-match = DQUOTE 1*entry-match-atom entry-match = DQUOTE 1*entry-match-atom
*("/" 1*entry-match-atom) DQUOTE *("/" 1*entry-match-atom) DQUOTE
entry-match-atom = 1*(list-wildcards / atom-slash) entry-match-atom = 1*(list-wildcards / atom-slash)
*(list-wildcards / atom-slash) *(list-wildcards / atom-slash)
attrib = DQUOTE 1*atom-dot *("/" 1*atom-dot) DQUOTE attrib = DQUOTE 1*atom-dot *("/" 1*atom-dot) DQUOTE
attrib-match = DQUOTE 1*attrib-match-atom attrib-match = DQUOTE 1*attrib-match-atom
*("/" 1*attrib-match-atom) DQUOTE *("/" 1*attrib-match-atom) DQUOTE
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attrib-match-atom = 1*(list-wildcards / atom-dot) attrib-match-atom = 1*(list-wildcards / atom-dot)
*(list-wildcards / atom-dot) *(list-wildcards / atom-dot)
value = nstring value = nstring
11 IANA Considerations select =/ *(SP "(" select-param *(SP select-param) ")"
; modifies the original IMAP4 select command to
; accept optional parameters
examine =/ *(SP "(" select-param *(SP select-param) ")"
; modifies the original IMAP4 examine command to
; accept optional parameters
select-param = astring / "(" astring SP astring *(SP astring) ")"
; parameters to SELECT may contain one or
; more atoms or strings - multiple items
; are always parenthesised
annotate-param = "ANNOTATE"
; defines the select parameter used with
; ANNOTATE extension
10 IANA Considerations
Both entry names and attribute names MUST be specified in a Both entry names and attribute names MUST be specified in a
standards track or IESG approved experimental RFC, or fall under the standards track or IESG approved experimental RFC, or fall under the
vendor namespace. Vendor names MUST be registered. vendor namespace. Vendor names MUST be registered.
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11.1 Entry and Attribute Registration Template
To: iana@iana.org To: iana@iana.org
Subject: IMAP Annotate Registration Subject: IMAP Annotate Registration
Please register the following IMAP Annotate item: Please register the following IMAP Annotate item:
[] Entry [] Attribute [] Entry [] Attribute
[] Vendor [] Open: RFC _______ [] Vendor [] Open: RFC _______
Name: ______________________________ Name: ______________________________
skipping to change at page 19, line ? skipping to change at page 19, line ?
Description: _______________________ Description: _______________________
____________________________________ ____________________________________
____________________________________ ____________________________________
Contact person: ____________________ Contact person: ____________________
email: ____________________ email: ____________________
12 Security Considerations Gellens & Daboo Expires June 2002 [Page 17] Internet Draft IMAP ANNOTATE Extension January 2002
11 Security Considerations
Care must be taken to ensure that annotations whose values are Care must be taken to ensure that annotations whose values are
intended to remain private are not stored in mailboxes which are intended to remain private are not stored in mailboxes which are
accessible to other users. This includes mailboxes owned by the accessible to other users. This includes mailboxes owned by the
user by whose ACLs permit access by others as well as any shared user by whose ACLs permit access by others as well as any shared
mailboxes. mailboxes.
13 References 12 References
[ABNF] Crocker, Overell, "Augmented BNF for Syntax Specifications: [ABNF] Crocker, Overell, "Augmented BNF for Syntax Specifications:
ABNF", RFC 2234, Internet Mail Consortium, Demon Internet Ltd, ABNF", RFC 2234, Internet Mail Consortium, Demon Internet Ltd,
November 1997. November 1997.
[ACAP] Newman, Myers, "ACAP -- Application Configuration Access [ACAP] Newman, Myers, "ACAP -- Application Configuration Access
Protocol", RFC 2244, Innosoft, Netscape, November 1997. Protocol", RFC 2244, Innosoft, Netscape, November 1997.
[ACL-EXT] Myers, "IMAP4 ACL extension", RFC 2086, Carnegie Mellon, [ACL-EXT] Myers, "IMAP4 ACL extension", RFC 2086, Carnegie Mellon,
January 1997. January 1997.
[IMAP4] Crispin, "Internet Message Access Protocol - Version 4rev1", [IMAP4] Crispin, "Internet Message Access Protocol - Version 4rev1",
RFC 2060, University of Washington, December 1996. RFC 2060, University of Washington, December 1996.
[KEYWORDS] Bradner, "Key words for use in RFCs to Indicate [KEYWORDS] Bradner, "Key words for use in RFCs to Indicate
Requirement Levels", RFC 2119, Harvard University, March 1997. Requirement Levels", RFC 2119, Harvard University, March 1997.
[MODTIME-EXT] Melnikov, "IMAP Conditional Store", work in progress.
<http://www.ietf.org/internet-drafts/draft-melnikov-imap-condstore-03.txt>
Gellens & Daboo Expires May 2002 [Page 17] Internet Draft IMAP ANNOTATE Extension November 2001
[SMTP-DSN] Moore, "SMTP Service Extension for Delivery Status [SMTP-DSN] Moore, "SMTP Service Extension for Delivery Status
Notifications", RFC 1891, University of Tennessee, January 1996. Notifications", RFC 1891, University of Tennessee, January 1996.
[SORT-EXT] Crispin, "Internet Message Access Protocol -- SORT [SORT-EXT] Crispin, "Internet Message Access Protocol -- SORT
Extension", work in progress. Extension", work in progress.
<http://www.ietf.org/internet-drafts/draft-ietf-imapext-sort-07.txt> <http://www.ietf.org/internet-drafts/draft-ietf-imapext-sort-07.txt>
14 Acknowledgments 13 Acknowledgments
Many thanks to Chris Newman for his detailed comments on the first Many thanks to Chris Newman for his detailed comments on the first
draft of this document, and to the participants at the ACAP working draft of this document, and to the participants at the ACAP working
dinner in Pittsburgh. dinner in Pittsburgh.
15 Authors' Addresses 14 Authors' Addresses
Randall Gellens Randall Gellens
QUALCOMM Incorporated QUALCOMM Incorporated
5775 Morehouse Dr. 5775 Morehouse Dr.
San Diego, CA 92121-2779 San Diego, CA 92121-2779
U.S.A. U.S.A.
Email: randy@qualcomm.com Email: randy@qualcomm.com
Gellens & Daboo Expires June 2002 [Page 18] Internet Draft IMAP ANNOTATE Extension January 2002
Cyrus Daboo Cyrus Daboo
Cyrusoft International, Inc. Cyrusoft International, Inc.
Suite 780, 5001 Baum Blvd. Suite 780, 5001 Baum Blvd.
Pittsburgh, PA 15213 Pittsburgh, PA 15213
U.S.A. U.S.A.
Email: daboo@cyrusoft.com Email: daboo@cyrusoft.com
16 Full Copyright Statement 15 Full Copyright Statement
Copyright (C) The Internet Society 2001. All Rights Reserved. Copyright (C) The Internet Society 2002. All Rights Reserved.
This document and translations of it may be copied and furnished to This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph kind, provided that the above copyright notice and this paragraph
are included on all such copies and derivative works. However, this are included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than followed, or as required to translate it into languages other than
English. English.
Gellens & Daboo Expires May 2002 [Page 18] Internet Draft IMAP ANNOTATE Extension November 2001
The limited permissions granted above are perpetual and will not be The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns. revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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