Network Working Group Pat Fleming INTERNET-DRAFT Independent Obsoletes: 3712 (if approved) Ira McDonald Intended Category: Standards Track High North Expires: 13 September 2014 13 March 2014 Lightweight Directory Access Protocol (LDAP): Schema for Printer Services Abstract This document defines a schema, object classes and attributes, for Printers and Print Services, for use with directories that support Lightweight Directory Access Protocol (RFC 4510). This document is based on the Printer attributes listed in Appendix E of Internet Printing Protocol/1.1 (RFC 2911). Additional Printer attributes are based on definitions in the Printer MIB v2 (RFC 3805), IEEE-ISTO PWG Command Set for IEEE 1284 Device ID (PWG 5107.2), IEEE-ISTO PWG IPP Job and Printer Extensions - Set 3 (PWG 5100.13), and IEEE-ISTO PWG IPP Everywhere (PWG 5100.14). This document is an individual submission to the IETF by the Internet Printing Protocol Working Group of the IEEE-ISTO Printer Working Group, as part of their PWG IPP Everywhere (PWG 5100.14) project for secure mobile printing with vendor-neutral Client software. This document obsoletes RFC 3712. Status of this Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." The list of current Internet-Drafts can be accessed at http://www.ietf.org/1id-abstracts.html The list of Internet-Draft Shadow Directories can be accessed at http://www.ietf.org/shadow.html Fleming, McDonald Expires 13 September 2014 [Page 1] Internet-Draft LDAP Schema for Printer Services 13 March 2014 This Internet-Draft will expire on 13 September 2014. Copyright Notice Copyright (c) 2014 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Fleming, McDonald Expires 13 September 2014 [Page 2] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Table of Contents 1. Introduction ............................................... 5 1.1. Relationship to SLP Printer Service .................... 5 1.2. Source of LDAP Printer Attributes ...................... 5 1.3. Source of LDAP Printer Schema OIDs ..................... 6 1.3.1. IBM Assignments for RFC 3712 ....................... 6 1.3.2. IEEE-ISTO PWG Assignments .......................... 6 1.4. Rationale for Design Choices ........................... 6 1.4.1. Rationale for using DirectoryString Syntax ......... 6 1.4.2. Rationale for using caseIgnoreMatch ................ 7 1.4.3. Rationale for using caseIgnoreSubstringsMatch ...... 8 2. Terminology and Conventions ................................ 8 3. Definition of Object Classes ............................... 10 3.1. slpServicePrinter ...................................... 11 3.2. printerAbstract ........................................ 11 3.3. printerService ......................................... 12 3.4. printerServiceAuxClass ................................. 12 3.5. printerIPP ............................................. 13 3.6. printerLPR ............................................. 13 4. Definition of Attribute Types .............................. 14 4.1. printer-uri ............................................ 16 4.2. printer-xri-supported .................................. 17 4.3. printer-name ........................................... 18 4.4. printer-natural-language-configured .................... 19 4.5. printer-location ....................................... 20 4.6. printer-info ........................................... 20 4.7. printer-more-info ...................................... 21 4.8. printer-make-and-model ................................. 21 4.9. printer-ipp-versions-supported ......................... 22 4.10. printer-multiple-document-jobs-supported .............. 23 4.11. printer-charset-configured ............................ 23 4.12. printer-charset-supported ............................. 23 4.13. printer-generated-natural-language-supported .......... 24 4.14. printer-document-format-supported ..................... 25 4.15. printer-color-supported ............................... 25 4.16. printer-compression-supported ......................... 25 4.17. printer-pages-per-minute .............................. 26 4.18. printer-pages-per-minute-color ........................ 26 4.19. printer-finishings-supported .......................... 27 4.20. printer-number-up-supported ........................... 28 4.21. printer-sides-supported ............................... 28 4.22. printer-media-supported ............................... 29 4.23. printer-media-local-supported ......................... 30 4.24. printer-resolution-supported .......................... 30 4.25. printer-print-quality-supported ....................... 31 4.26. printer-job-priority-supported ........................ 32 4.27. printer-copies-supported .............................. 32 4.28. printer-job-k-octets-supported ........................ 32 4.29. printer-current-operator .............................. 33 4.30. printer-service-person ................................ 33 Fleming, McDonald Expires 13 September 2014 [Page 3] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.31. printer-delivery-orientation-supported ................ 34 4.32. printer-stacking-order-supported ...................... 34 4.33. printer-output-features-supported ..................... 35 4.34. printer-aliases ....................................... 36 4.35. printer-device-id ..................................... 36 4.36. printer-device-service-count .......................... 37 4.37. printer-uuid .......................................... 37 4.38. printer-charge-info ................................... 38 4.39. printer-charge-info-uri ............................... 39 4.40. printer-geo-location .................................. 39 4.41. printer-ipp-features-supported ........................ 40 5. Definition of Syntaxes ..................................... 42 6. Definition of Matching Rules ............................... 42 7. IANA Considerations ........................................ 43 7.1. Registration of Object Classes ......................... 43 7.2. Registration of Attribute Types ........................ 44 8. Internationalization Considerations ........................ 46 9. Security Considerations .................................... 46 10. References ................................................ 47 10.1. Normative References .................................. 47 10.2. Informative References ................................ 49 11. Acknowledgments ........................................... 50 12. Appendix A - Changes since RFC 3712 ....................... 51 13. Appendix B - Abbreviations Used in this Document .......... 52 14. Appendix X - Change History ............................... 53 15. Authors' Addresses ........................................ 59 Fleming, McDonald Expires 13 September 2014 [Page 4] Internet-Draft LDAP Schema for Printer Services 13 March 2014 1. Introduction This document defines several object classes to provide Lightweight Directory Access Protocol [RFC4510] applications with flexible options in defining Printer information using LDAP schema. Classes are provided for defining directory entries with common Printer information as well as for extending existing directory entries with SLPv2 [RFC2608], IPP/1.1 [RFC2911], and LPR [RFC1179] protocol-specific information. This document is an individual submission to the IETF by the Internet Printing Protocol Working Group of the IEEE-ISTO Printer Working Group, as part of their PWG IPP Everywhere [PWG5100.14] project for secure mobile printing with vendor-neutral Client software. This document updates RFC 3712. Please send comments directly to the authors at the addresses listed in the section "Authors' Addresses". 1.1. Relationship to SLP Printer Service The schema defined in this document is technically aligned with the stable IANA-registered 'service:printer:' v2.0 template [SLPPRT20], for compatibility with already deployed Service Location Protocol (SLPv2) [RFC2608] service advertising and discovery infrastructure. The attribute syntaxes are technically aligned with the 'service:printer:' v2.0 template - therefore simpler types are sometimes used (for example, 'DirectoryString' [RFC4517] rather than 'labeledURI' [RFC2079] for the 'printer-uri' attribute). 1.2. Source of LDAP Printer Attributes The schema defined in this document is based on: all of the Printer attributes listed in Appendix E 'Generic Directory Schema' that are defined in section 4.4 'Printer Description Attributes' of Internet Printing Protocol/1.1: Model and Semantics [RFC2911]; and selected Printer attributes defined in the Printer MIB v2 [RFC3805], IEEE-ISTO PWG Command Set for IEEE 1284 Device ID [PWG5107.2], IEEE-ISTO PWG IPP Job and Printer Extensions - Set 3 [PWG5100.13], and IEEE-ISTO PWG IPP Everywhere [PWG5100.14] See the table of Printer attributes and source documents in section 4 'Definition of Attribute Types' in this document. Fleming, McDonald Expires 13 September 2014 [Page 5] Internet-Draft LDAP Schema for Printer Services 13 March 2014 1.3. Source of LDAP Printer Schema OIDs 1.3.1. IBM Assignments for RFC 3712 In March 2000, IBM permanently assigned ASN.1 OIDs to all of the object classes and attributes types that were defined in the original LDAP Printer Schema [RFC3712]. 1.3.2. IEEE-ISTO PWG Assignments In October 2011, IBM permanently delegated the base ASN.1 OID "1.3.18.0.2.24.46" to the IEEE-ISTO PWG for use in any PWG project. Subsequently, the PWG permanently assigned subordinate ASN.1 OIDs to all of the new attribute types defined in this updated LDAP Printer Schema. 1.4. Rationale for Design Choices 1.4.1. Rationale for using DirectoryString Syntax The attribute syntax 'DirectoryString' (UTF-8 [STD63]) defined in [RFC4517] is specified for several groups of string attributes that are defined in this document: 1) URI - printer-uri, printer-xri-supported, printer-more-info, printer-charge-info-uri, printer-uuid The UTF-8 encoding is compatible with deployment of (UTF-8 based) IRI Internationalized Resource Identifiers (IRIs) [RFC3987]. 2) Description - printer-name, printer-location, printer-info, printer-make-and-model The UTF-8 encoding supports descriptions in any language, conformant with the IETF Policy on Character Sets and Languages [BCP18]. Note: The printer-natural-language-configured attribute contains a language tag [BCP47] for these description attributes (for Fleming, McDonald Expires 13 September 2014 [Page 6] Internet-Draft LDAP Schema for Printer Services 13 March 2014 example, to support text-to-speech conversions). 3) Keyword - printer-compression-supported, printer-finishings-supported, printer-media-supported, printer-media-local-supported, printer-print-quality-supported The UTF-8 encoding is compatible with the current IPP/1.1 [RFC2911] definition of the equivalent attributes, most of which have the IPP/1.1 union syntax 'keyword or name'. The keyword attributes defined in this document are extensible by site-specific or vendor-specific 'names' which behave like new 'keywords' Note: In IPP/1.1, each value is strongly typed over-the-wire as either 'keyword' or 'name'. This union selector is not preserved in the definitions of these equivalent LDAP attributes. 1.4.2. Rationale for using caseIgnoreMatch The EQUALITY matching rule 'caseIgnoreMatch' defined in [RFC4517] is specified for several groups of string attributes that are defined in this document: 1) URI These URI attributes specify EQUALITY matching with 'caseIgnoreMatch' (rather than with 'caseExactMatch') in order to conform to the spirit of [STD66], which requires case insensitive matching on the host part of a URI versus case sensitive matching on the remainder of a URI. These URI attributes follow existing practice of supporting case insensitive equality matching for host names in the associatedDomain attribute defined in [RFC4524]. Either equality matching rule choice would be a compromise: a) case sensitive whole URI matching can lead to false negative matches and has been shown to be fragile (given deployed client applications that 'pretty up' host names displayed and transferred in URI); b) case insensitive whole URI matching can lead to false positive matches, although it is a dangerous practice to publish URI that differ only by case (for example, in the path elements). 2) Description Case insensitive equality matching is more user-friendly for description attributes. Fleming, McDonald Expires 13 September 2014 [Page 7] Internet-Draft LDAP Schema for Printer Services 13 March 2014 3) Keyword Case insensitive equality matching is more user-friendly for keyword attributes. 4) IEEE 1284 Device ID Case insensitive equality matching is mandatory for IEEE 1284 Device ID attributes. 1.4.3. Rationale for using caseIgnoreSubstringsMatch The SUBSTR matching rule 'caseIgnoreSubstringsMatch' defined in [RFC4517] is specified for several groups of string attributes that are defined in this document: 1) URI These URI attributes follow existing practice of supporting case insensitive equality matching for host names in the associatedDomain attribute defined in [RFC4524]. 2) Description Support for case insensitive substring matching is more user-friendly for description attributes. 3) Keyword Support for case insensitive substring matching is more user-friendly for keyword attributes. 4) IEEE 1284 Device ID Support for case insensitive substring matching is mandatory for IEEE 1284 Device ID attributes. 2. Terminology and Conventions The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC2119]. Schema definitions are provided using LDAP [RFC4510] description formats. Definitions provided here are formatted (line wrapped) for readability. Fleming, McDonald Expires 13 September 2014 [Page 8] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Fleming, McDonald Expires 13 September 2014 [Page 9] Internet-Draft LDAP Schema for Printer Services 13 March 2014 3. Definition of Object Classes We define the following LDAP object classes for use with both generic Printer related information and services specific to SLPv2 [RFC2608], IPP/1.1 [RFC2911], and LPR [RFC1179]. slpServicePrinter - auxiliary class for SLP registered Printers printerAbstract - abstract class for all Printer classes printerService - structural class for Printers printerServiceAuxClass - auxiliary class for Printers printerIPP - auxiliary class for IPP Printers printerLPR - auxiliary class for LPR Printers The following are some examples of how applications could choose to use these classes when creating directory entries: 1) Use printerService for directory entries containing common Printer information. 2) Use both printerService and slpServicePrinter for directory entries containing common Printer information for SLP registered Printers. 3) Use printerService, printerLPR and printerIPP for directory entries containing common Printer information for Printers that support both LPR and IPP. 4) Use printerServiceAuxClass and object classes not defined by this document for directory entries containing common Printer information. In this example, printerServiceAuxClass is used for extending other structural classes defining Printer information with common printer information defined in this document. Refer to Section 4 for definition of attribute types referenced by these object classes. We use attribute names instead of OIDs in object class definitions for clarity. Some attribute names described in [RFC2911] have been prefixed with 'printer-' as recommended in [RFC2926] and [SLPPRT20]. Fleming, McDonald Expires 13 September 2014 [Page 10] Internet-Draft LDAP Schema for Printer Services 13 March 2014 3.1. slpServicePrinter ( 1.3.18.0.2.6.254 NAME 'slpServicePrinter' DESC 'Service Location Protocol (SLP) information.' AUXILIARY SUP slpService ) This auxiliary class defines Service Location Protocol (SLPv2) [RFC2608] specific information. It MAY be used to create new or extend existing directory entries with SLP 'service:printer' abstract service type information as defined in [SLPPRT20]. This object class is derived from 'slpService', the parent class for all SLP services, defined in [RFC2926]. 3.2. printerAbstract ( 1.3.18.0.2.6.258 NAME 'printerAbstract' DESC 'Printer related information.' ABSTRACT SUP top MAY ( printer-name $ printer-natural-language-configured $ printer-location $ printer-info $ printer-more-info $ printer-make-and-model $ printer-multiple-document-jobs-supported $ printer-charset-configured $ printer-charset-supported $ printer-generated-natural-language-supported $ printer-document-format-supported $ printer-color-supported $ printer-compression-supported $ printer-pages-per-minute $ printer-pages-per-minute-color $ printer-finishings-supported $ printer-number-up-supported $ printer-sides-supported $ printer-media-supported $ printer-media-local-supported $ printer-resolution-supported $ printer-print-quality-supported $ printer-job-priority-supported $ printer-copies-supported $ Fleming, McDonald Expires 13 September 2014 [Page 11] Internet-Draft LDAP Schema for Printer Services 13 March 2014 printer-job-k-octets-supported $ printer-current-operator $ printer-service-person $ printer-delivery-orientation-supported $ printer-stacking-order-supported $ printer-output-features-supported $ printer-device-id $ printer-device-service-count $ printer-uuid $ printer-charge-info $ printer-charge-info-uri $ printer-geo-location ) ) This abstract class defines Printer information. It is a base class for deriving other Printer related classes, such as, but not limited to, classes defined in this document. It defines a common set of printer attributes that are not specific to any one type of service, protocol or operating system. 3.3. printerService ( 1.3.18.0.2.6.255 NAME 'printerService' DESC 'Printer information.' STRUCTURAL SUP printerAbstract MAY ( printer-uri $ printer-xri-supported ) ) This structural class defines Printer information. It is derived from class printerAbstract and thus inherits common Printer attributes. This class can be used with or without auxiliary classes to define printer information. Auxiliary classes can be used to extend the common printer information with protocol, service or operating system specific information. Note: When extending other structural classes with auxiliary classes, printerService SHOULD NOT be used. 3.4. printerServiceAuxClass ( 1.3.18.0.2.6.257 NAME 'printerServiceAuxClass' DESC 'Printer information.' AUXILIARY Fleming, McDonald Expires 13 September 2014 [Page 12] Internet-Draft LDAP Schema for Printer Services 13 March 2014 SUP printerAbstract MAY ( printer-uri $ printer-xri-supported ) ) This auxiliary class defines Printer information. It is derived from class printerAbstract and thus inherits common Printer attributes. 3.5. printerIPP ( 1.3.18.0.2.6.256 NAME 'printerIPP' DESC 'Internet Printing Protocol (IPP) information.' AUXILIARY SUP top MAY ( printer-ipp-versions-supported $ printer-ipp-features-supported $ printer-multiple-document-jobs-supported ) ) This auxiliary class defines Internet Printing Protocol (IPP/1.1) [RFC2911] information. It is used to extend structural classes with IPP specific Printer information. Note: See IPP URL Scheme [RFC3510] and IPP over HTTPS Transport Binding and 'ipps' URI Scheme [IPPSURI] for conforming URI for IPP Printers. 3.6. printerLPR ( 1.3.18.0.2.6.253 NAME 'printerLPR' DESC 'LPR information.' AUXILIARY SUP top MUST ( printer-name ) MAY ( printer-aliases) ) This auxiliary class defines LPR [RFC1179] information. It is used to identify directory entries that support LPR. Fleming, McDonald Expires 13 September 2014 [Page 13] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4. Definition of Attribute Types The following attribute types are referenced by the object classes defined in Section 3. The following attribute types reference syntax OIDs defined in Section 3 of [RFC4517] (see Section 5 'Definition of Syntaxes' below). The following attribute types reference matching rule names (instead of OIDs) for clarity (see Section 6 below). For optional attributes, if the Printer information is not known, the attribute value SHOULD NOT be set. In the following definitions, referenced matching rules are defined in Section 4 of [RFC4517] and discussed in Section 6 'Definition of Matching Rules' later in this document. Note: For compatibility with existing implementations of [RFC3712] and underlying string length limits in [RFC2707], [RFC2911], [RFC3805], [PWG5107.2], [PWG5100.13], and [PWG5100.14], implementations of the attributes defined in this document SHOULD NOT exceed those underlying string length limits (to avoid truncation and false matches). Note: For interoperability and consistent text display, values of attributes defined in this document: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL or any C0 or C1 control characters except for HT, CR, and LF; (c) SHOULD only contain CR and LF characters together (not as singletons); and SHOULD NOT contain HT, CR, or LF characters in names, e.g., printer-name and printer-aliases. Note: Some of the following attributes are described as 'List of xxx' (using a comma as the member delimiter). Some other attributes are described as 'One of xxx' (single-valued). In all cases, any attribute can have multiple values represented as multiple instances, except where explictly restricted in syntax to be single-valued. Note: Values of the string attributes printer-xri-supported and printer-resolution-supported use different field delimiters ('<' and '>', respectively). These two field delimiters are different for compatibility with the corresponding attributes in the IANA-registered SLP 'service:printer:' v2.0 template [SLPPRT20], which was defined before the original LDAP Printer Schema [RFC3712] was written. The following table is a summary of the attribute names defined by this document and their corresponding source document names as defined in [RFC2911], [RFC3805], [PWG5107.2], or [PWG5100.13]. Some source attribute names have been prefixed with 'printer-' as Fleming, McDonald Expires 13 September 2014 [Page 14] Internet-Draft LDAP Schema for Printer Services 13 March 2014 recommended in [RFC2926], to address the flat namespace for LDAP identifiers. LDAP & SLP Printer Schema Source Document and Attribute Name ------------------------------ ------------------------------------- *** IPP/1.1 and Semantics Model [RFC2911] printer-uri printer-xri-supported [printer-uri-supported] [uri-authentication-supported] [uri-security-supported] printer-name printer-name printer-natural-language-configured natural-language-configured printer-location printer-location printer-info printer-info printer-more-info printer-more-info printer-make-and-model printer-make-and-model printer-ipp-versions-supported ipp-versions-supported printer-multiple-document-jobs-supported multiple-document-jobs-supported printer-charset-configured charset-configured printer-charset-supported charset-supported printer-generated-natural-language-supported generated-natural-language-supported printer-document-format-supported document-format-supported printer-color-supported color-supported printer-compression-supported compression-supported printer-pages-per-minute pages-per-minute printer-pages-per-minute-color pages-per-minute-color printer-finishings-supported finishings-supported printer-number-up-supported number-up-supported printer-sides-supported sides-supported printer-media-supported media-supported printer-media-local-supported [site names from IPP media-supported] printer-resolution-supported printer-resolution-supported printer-print-quality-supported print-quality-supported printer-job-priority-supported job-priority-supported printer-copies-supported copies-supported printer-job-k-octets-supported job-k-octets-supported *** Printer MIB v2 [RFC3805] printer-current-operator prtGeneralCurrentOperator printer-service-person prtGeneralServicePerson printer-delivery-orientation-supported prtOutputPageDeliveryOrientation printer-stacking-order-supported prtOutputStackingOrder printer-output-features-supported [prtOutputBursting] Fleming, McDonald Expires 13 September 2014 [Page 15] Internet-Draft LDAP Schema for Printer Services 13 March 2014 [prtOutputDecollating] [prtOutputPageCollated] [prtOutputOffsetStacking] printer-aliases prtGeneralPrinterName *** Cmd Set 1284 Device ID [PWG5107.2] printer-device-id printer-device-id *** IPP Job/Printer Ext Set3 [PWG5100.13] printer-device-service-count device-service-count printer-uuid printer-uuid printer-charge-info printer-charge-info printer-charge-info-uri printer-charge-info-uri printer-geo-location printer-geo-location printer-ipp-features-supported ipp-features-supported 4.1. printer-uri ( 1.3.18.0.2.4.1140 NAME 'printer-uri' DESC 'A URI supported by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) If the printer-xri-supported LDAP attribute is implemented, then this printer-uri value MUST be listed in printer-xri-supported. Values of URI SHOULD conform to [STD66], although URI schemes can be defined which do not conform to [STD66] (see [BCP35]). Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 1023 octets in length. Note: LDAP application clients SHOULD NOT attempt to use malformed URI values read from this attribute. LDAP administrative clients SHOULD not write malformed URI values into this attribute. Note: See IPP URL Scheme [RFC3510] and IPP over HTTPS Transport Binding and 'ipps' URI Scheme [IPPSURI] for conforming URI for IPP Printers. Note: For SLP registered Printers, the LDAP printer-uri attribute SHOULD be set to the value of the SLP-registered URL of the Printer, for interworking with SLPv2 [RFC2608] service discovery. Note: See Sections 1.1, 1.2, and 1.3 for rationale for design Fleming, McDonald Expires 13 September 2014 [Page 16] Internet-Draft LDAP Schema for Printer Services 13 March 2014 choices. 4.2. printer-xri-supported ( 1.3.18.0.2.4.1107 NAME 'printer-xri-supported' DESC 'An XRI (extended resource identifier) supported by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) An XRI (extended resource identifier) supported by this Printer. Each value of this attribute MUST consist of a URI (uniform resource identifier) followed by (optional) authentication and security fields. Each XRI field MUST be delimited by '<', with optional trailing whitespace. For example: 'uri=ipp://example.com/ipp< auth=digest< sec=tls<' 'uri=ipps://example.com/ipp< auth=digest< sec=tls<' 'uri=lpr://example.com/lpr< auth=none< sec=none<' 'uri=mailto:printer@example.com< auth=none< sec=none<' Note: See the note in section 4 about the different field delimiters used in the printer-xri-supported and printer-resolution-supported attributes ('<' and '>', respectively), chosen for compatibility with the IANA-registered SLP 'service:printer:' v2.0 template [SLPPRT20]. Note: Multiple values for this attribute are represented as multiple instances of this attribute. Values of URI SHOULD conform to [STD66], although URI schemes can be defined which do not conform to [STD66] (see [BCP35]). Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 1023 octets in length. Note: LDAP application clients SHOULD NOT attempt to use malformed URI values read from this attribute. LDAP administrative clients SHOULD not write malformed URI values into this attribute. Note: This attribute is based on the IPP/1.1 [RFC2911] attributes 'printer-uri-supported', 'uri-authentication-supported', and 'uri-security-supported' (called the 'Three Musketeers' because they are parallel, ordered attributes). This attribute unfolds those IPP/1.1 attributes and thus avoids the ordering (and same number of Fleming, McDonald Expires 13 September 2014 [Page 17] Internet-Draft LDAP Schema for Printer Services 13 March 2014 values) constraints of the IPP/1.1 separate attributes. Defined keywords for fields include: 'uri' (IPP 'printer-uri-supported') 'auth' (IPP 'uri-authentication-supported') 'sec' (IPP 'uri-security-supported') A missing 'auth' field SHOULD be interpreted to mean 'none'. Per IPP/1.1 [RFC2911], IPP Job and Printer Extensions - Set 3 [PWG5100.13], and IANA IPP Registry [IANAIPP], defined values of the 'auth' field include: 'none' (no authentication for this URI) 'requesting-user-name' (from operation request) 'basic' (HTTP/1.1 Basic [RFC2617]) 'digest' (HTTP/1.1 Digest [RFC2617]) 'certificate' (X.509 Certificate [RFC5280]) 'negotiate' (HTTP/1.1 Negotiate [RFC4559]) A missing 'sec' field SHOULD be interpreted to mean 'none'. Per IPP/1.1 [RFC2911] and IANA IPP Registry [IANAIPP], defined values of the 'sec' field include: 'none' (no security for this URI) 'ssl3' (Netscape SSL3) 'tls' (IETF TLS, [RFC5246]) Note: The syntax and delimiter for this attribute are aligned with the equivalent attribute in the 'service:printer:' v2.0 template [SLPPRT20]. Whitespace is permitted after (but not before) the delimiter '<'. Note: See IPP URL Scheme [RFC3510] and IPP over HTTPS Transport Binding and 'ipps' URI Scheme [IPPSURI] for conforming URI for IPP Printers. Note: See Sections 1.1, 1.2, and 1.3 for rationale for design choices. 4.3. printer-name ( 1.3.18.0.2.4.1135 NAME 'printer-name' DESC 'The site-specific administrative name of this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE Fleming, McDonald Expires 13 September 2014 [Page 18] Internet-Draft LDAP Schema for Printer Services 13 March 2014 ) Values of this attribute SHOULD be specified in the language specified in printer-natural-language-configured (for example, to support text-to-speech conversions), although the Printer's name MAY be specified in any language. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. Note: This name MAY be the last part of the Printer's URI or it MAY be completely unrelated. This name MAY contain characters that are not allowed in a conventional URI (see [STD66]). Note: For interoperability, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; and (b) SHOULD NOT contain DEL or any C0 or C1 control characters. 4.4. printer-natural-language-configured ( 1.3.18.0.2.4.1119 NAME 'printer-natural-language-configured' DESC 'The configured natural language for LDAP attributes of syntax DirectoryString (UTF-8) in this directory entry.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) Also, a possible natural language for IPP protocol string attributes set by operator, system administrator, or manufacturer. Also, the (declared) natural language of the printer-name, printer-location, printer-info, and printer-make-and-model attributes of this Printer. Values of language tags MUST conform to Tags for Identifying Languages [BCP47]. For example: 'en-us' (English as spoken in the US) 'fr-fr' (French as spoken in France) Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 63 octets in length. Note: For compatibility with IPP/1.1 [RFC2911], language tags in this attribute SHOULD be lowercase normalized. Fleming, McDonald Expires 13 September 2014 [Page 19] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.5. printer-location ( 1.3.18.0.2.4.1136 NAME 'printer-location' DESC 'The physical location of this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) For example: 'Room 123A' 'Second floor of building XYZ' Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 127 octets in length. Note: For interoperability and consistent text display, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL or any C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD only contain CR and LF characters together (not as singletons). 4.6. printer-info ( 1.3.18.0.2.4.1139 NAME 'printer-info' DESC 'Descriptive information about this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) For example: 'This Printer can be used for printing color transparencies for HR presentations' 'Out of courtesy for others, please print only small (1-5 page) jobs at this Printer' 'This Printer is going away on July 1, 1997, please find a new Printer' Note: For compatibility with IPP/1.1 [RFC2911], values of this Fleming, McDonald Expires 13 September 2014 [Page 20] Internet-Draft LDAP Schema for Printer Services 13 March 2014 attribute SHOULD NOT exceed 127 octets in length. Note: For interoperability and consistent text display, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL or any C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD only contain CR and LF characters together (not as singletons). 4.7. printer-more-info ( 1.3.18.0.2.4.1134 NAME 'printer-more-info' DESC 'A URI for more information about this specific Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) For example, this could be an HTTP URI referencing an HTML page accessible to a Web Browser. The information obtained from this URI is intended for end user consumption. Values of URI SHOULD conform to [STD66], although URI schemes can be defined which do not conform to [STD66] (see [BCP35]). Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 1023 octets in length. Note: LDAP application clients SHOULD NOT attempt to use malformed URI values read from this attribute. LDAP administrative clients SHOULD not write malformed URI values into this attribute. Note: See Sections 1.1, 1.2, and 1.3 for rationale for design choices. 4.8. printer-make-and-model ( 1.3.18.0.2.4.1138 NAME 'printer-make-and-model' DESC 'Make and model of this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) Fleming, McDonald Expires 13 September 2014 [Page 21] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 127 octets in length. Note: The Printer manufacturer MAY initially populate this attribute. Note: For interoperability and consistent text display, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL or any C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD only contain CR and LF characters together (not as singletons). 4.9. printer-ipp-versions-supported ( 1.3.18.0.2.4.1133 NAME 'printer-ipp-versions-supported' DESC 'List of IPP versions supported by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of IPP versions supported by this Printer. For example: '1.1,2.0' Note: Length overflow in values of this attribute MUST be handled by multiple instances of this attribute, i.e., individual comma-delimited list members MUST NOT be truncated. The IPP protocol version(s) MUST include major and minor versions, i.e., the exact version numbers for which this Printer implementation meets the IPP version-specific conformance requirements and registered in the IANA IPP Registry [IANAIPP]. IANA-registered versions of IPP currently are: '1.0' (IPP/1.0 [RFC2566], OBSOLETE) '1.1' (IPP/1.1 [RFC2911]) '2.0' (IPP/2.0 [PWG5100.12]) '2.1' (IPP/2.1 [PWG5100.12]) '2.2' (IPP/2.2 [PWG5100.12]) Fleming, McDonald Expires 13 September 2014 [Page 22] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.10. printer-multiple-document-jobs-supported ( 1.3.18.0.2.4.1132 NAME 'printer-multiple-document-jobs-supported' DESC 'Indicates whether or not this Printer supports more than one document per job.' EQUALITY booleanMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 SINGLE-VALUE ) 4.11. printer-charset-configured ( 1.3.18.0.2.4.1109 NAME 'printer-charset-configured' DESC 'The configured charset for IPP protocol values of error and status messages generated by this Printer.' EQUALITY caseIgnoreMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) Also, a possible charset for IPP protocol string attributes set by operator, system administrator, or manufacturer. For example: 'utf-8' (ISO 10646/Unicode in UTF-8 transform [STD63]) 'iso-8859-1' (Latin1) Values of charset tags SHOULD be defined in the IANA Registry of Character Sets [IANACHAR] (see also [BCP19]) and the '(preferred MIME name)' SHOULD be used as the charset tag in this attribute. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 63 octets in length. Note: For compatibility with IPP/1.1 [RFC2911], charset tags in this attribute SHOULD be lowercase normalized. 4.12. printer-charset-supported ( 1.3.18.0.2.4.1131 NAME 'printer-charset-supported' DESC 'One of the charsets supported for IPP protocol values of IPP string attributes that correspond to attributes of syntax DirectoryString (UTF-8) for this directory entry.' Fleming, McDonald Expires 13 September 2014 [Page 23] Internet-Draft LDAP Schema for Printer Services 13 March 2014 EQUALITY caseIgnoreMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) One of the charsets supported for IPP protocol string attributes that correspond to attributes of syntax DirectoryString (UTF-8) for this directory entry. For example: 'iso-8859-1' (ISO Latin1) 'utf-8' (UTF-8 [STD63]) Note: Multiple values for this attribute are represented as multiple instances of this attribute. Values of charset tags SHOULD be defined in the IANA Registry of Character Sets [IANACHAR] (see also [BCP19]) and the '(preferred MIME name)' SHOULD be used as the charset tag in this attribute. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 63 octets in length. Note: For compatibility with IPP/1.1 [RFC2911], charset tags in this attribute SHOULD be lowercase normalized. 4.13. printer-generated-natural-language-supported ( 1.3.18.0.2.4.1137 NAME 'printer-generated-natural-language-supported' DESC 'One of the natural languages supported for LDAP attributes of syntax DirectoryString (UTF-8) in this directory entry.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Values of language tags SHOULD conform to Tags for Identifying Languages [BCP47]. For example: 'en-us' (English as spoken in the US) 'fr-fr' (French as spoken in France) Note: Multiple values for this attribute are represented as multiple instances of this attribute. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 63 octets in length. Note: For compatibility with IPP/1.1 [RFC2911], language tags in this attribute SHOULD be lowercase normalized. Fleming, McDonald Expires 13 September 2014 [Page 24] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.14. printer-document-format-supported ( 1.3.18.0.2.4.1130 NAME 'printer-document-format-supported' DESC 'One of the source document formats which can be interpreted and printed by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Values of document formats SHOULD be MIME media types defined in the IANA Registry of MIME Media Types [IANAMIME] (see also [BCP13]). For example: 'application/postscript' (Adobe PostScript) 'text/plain' (plain text) Note: Multiple values for this attribute are represented as multiple instances of this attribute. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. 4.15. printer-color-supported ( 1.3.18.0.2.4.1129 NAME 'printer-color-supported' DESC 'Indicates whether this Printer is capable of any type of color printing at all, including highlight color.' EQUALITY booleanMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.7 SINGLE-VALUE ) 4.16. printer-compression-supported ( 1.3.18.0.2.4.1128 NAME 'printer-compression-supported' DESC 'List of compression algorithms supported by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 Fleming, McDonald Expires 13 September 2014 [Page 25] Internet-Draft LDAP Schema for Printer Services 13 March 2014 ) Comma-delimited list of compression algorithms supported by this Printer. For example: 'none' 'deflate,gzip' Note: Length overflow in values of this attribute MUST be handled by multiple instances of this attribute, i.e., individual comma-delimited list members MUST NOT be truncated. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP Registry [IANAIPP] include: 'none' (no compression is used) 'deflate' (public domain ZIP described in [RFC1951]) 'gzip' (GNU ZIP described in [RFC1952]) 'compress' (UNIX compression described in [RFC1977]) 4.17. printer-pages-per-minute ( 1.3.18.0.2.4.1127 NAME 'printer-pages-per-minute' DESC 'The nominal number of pages per minute which can be output by this Printer.' EQUALITY integerMatch ORDERING integerOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) This attribute is informative, not a service guarantee. Typically, it is the value used in marketing literature to describe this Printer. For example, the value for a simplex or black-and-white print mode. 4.18. printer-pages-per-minute-color ( 1.3.18.0.2.4.1126 NAME 'printer-pages-per-minute-color' DESC 'The nominal number of color pages per minute which can be output by this Printer.' EQUALITY integerMatch Fleming, McDonald Expires 13 September 2014 [Page 26] Internet-Draft LDAP Schema for Printer Services 13 March 2014 ORDERING integerOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) This attribute is informative, not a service guarantee. Typically, it is the value used in marketing literature to describe this Printer. 4.19. printer-finishings-supported ( 1.3.18.0.2.4.1125 NAME 'printer-finishings-supported' DESC 'List of finishing operations supported by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of finishing operations supported by this Printer. For example: 'staple' 'staple,punch,bind' Note: Length overflow in values of this attribute MUST be handled by multiple instances of this attribute, i.e., individual comma-delimited list members MUST NOT be truncated. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP Registry [IANAIPP] include: 'none', 'staple', 'punch', 'cover', 'bind', 'saddle-stitch', 'edge-stitch', 'staple-top-left', 'staple-bottom-left', 'staple-top-right', 'staple-bottom-right', 'edge-stitch-left', 'edge-stitch-top', 'edge-stitch-right', 'edge-stitch-bottom', 'staple-dual-left', 'staple-dual-top', 'staple-dual-right', 'staple-dual-bottom'. Note: Implementations MAY support other values. Fleming, McDonald Expires 13 September 2014 [Page 27] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.20. printer-number-up-supported ( 1.3.18.0.2.4.1124 NAME 'printer-number-up-supported' DESC 'Maximum number of print-stream pages that can be imposed upon a single side of an instance of selected medium by this Printer.' EQUALITY integerMatch ORDERING integerOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) Maximum number of print-stream pages that can be imposed upon a single side of an instance of a selected medium by this Printer. For example: '1' '4' Note: Values of this attribute differ from the corresponding IPP attribute, in that only the maximum number-up is mapped from the corresponding IPP attribute 'number-up-supported' defined in [RFC2911]. 4.21. printer-sides-supported ( 1.3.18.0.2.4.1123 NAME 'printer-sides-supported' DESC 'List of impression sides (one or two) and the two-sided impression rotations supported by this Printer.' EQUALITY caseIgnoreMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of impression sides (one or two) and the two-sided impression rotations supported by this Printer. For example: 'one-sided' 'one-sided,two-sided-short-edge' Note: Length overflow in values of this attribute MUST be handled by multiple instances of this attribute, i.e., individual comma-delimited list members MUST NOT be truncated. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. Fleming, McDonald Expires 13 September 2014 [Page 28] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP Registry [IANAIPP] are: 'one-sided' 'two-sided-long-edge' 'two-sided-short-edge' 4.22. printer-media-supported ( 1.3.18.0.2.4.1122 NAME 'printer-media-supported' DESC 'One of the names/sizes/types/colors of the media supported by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Values SHOULD conform to PWG Media Standardized Names [PWG5101.1]. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. Values of standardized media size names defined in [PWG5101.1] and recorded in the IANA IPP Registry [IANAIPP] include: 'na_letter_8.5x11in' 'iso_a4_210x297mm' Values of standardized media types defined in [PWG5101.1] and recorded in the IANA IPP Registry [IANAIPP] include: 'envelope' 'stationery' Values of standardized media colors defined in [PWG5101.1] and recorded in the IANA IPP Registry [IANAIPP] include: 'white' 'blue' Note: Multiple values for this attribute are represented as multiple instances of this attribute. Fleming, McDonald Expires 13 September 2014 [Page 29] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.23. printer-media-local-supported ( 1.3.18.0.2.4.1117 NAME 'printer-media-local-supported' DESC 'One of the site-specific media supported by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Values SHOULD conform to PWG Media Standardized Names [PWG5101.1]. For example: 'custom_purchasing-form_8.5x11in' (site-specific name) Note: Multiple values for this attribute are represented as multiple instances of this attribute. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. 4.24. printer-resolution-supported ( 1.3.18.0.2.4.1121 NAME 'printer-resolution-supported' DESC 'One of the resolutions supported for printing documents by this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Each resolution value MUST be a string containing 3 fields: 1) Cross feed direction resolution (positive integer); 2) Feed direction resolution (positive integer); 3) Unit - 'dpi' (dots per inch) or 'dpcm' (dots per centimeter). Each resolution field MUST be delimited by '>', with optional trailing whitespace. For example: '300> 300> dpi>' '600> 600> dpi>' Note: See the note in section 4 about the different field delimiters used in the printer-xri-supported and printer-resolution-supported attributes ('<' and '>', respectively), chosen for compatibility with Fleming, McDonald Expires 13 September 2014 [Page 30] Internet-Draft LDAP Schema for Printer Services 13 March 2014 the IANA-registered SLP 'service:printer:' v2.0 template [SLPPRT20]. Note: Multiple values for this attribute are represented as multiple instances of this attribute. Note: This attribute is based on 'printer-resolution-supported' defined in IPP/1.1 [RFC2911] (which has a binary complex encoding) derived from 'prtMarkerAddressabilityFeedDir', 'prtMarkerAddressabilityXFeedDir', and 'prtMarkerAddressabilityUnit' defined in the Printer MIB v2 [RFC3805] (which have integer encodings). Note: The syntax and delimiter for this attribute are aligned with the equivalent attribute in the 'service:printer:' v2.0 template [SLPPRT20]. Whitespace is permitted after (but not before) the delimiter '>'. 4.25. printer-print-quality-supported ( 1.3.18.0.2.4.1120 NAME 'printer-print-quality-supported' DESC 'List of print qualities supported for printing documents on this Printer.' EQUALITY caseIgnoreMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of print qualities supported for printing documents on this Printer. For example: 'unknown' 'draft,normal,high' Note: Length overflow in values of this attribute MUST be handled by multiple instances of this attribute, i.e., individual comma-delimited list members MUST NOT be truncated. Values defined in IPP/1.1 [RFC2911] and recorded in the IANA IPP Registry [IANAIPP] include: 'draft' 'normal' 'high' Note: The value 'unknown' MUST only be reported if the corresponding IPP attribute is not present, i.e., the value 'unknown' is an artifact of this LDAP mapping. Fleming, McDonald Expires 13 September 2014 [Page 31] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.26. printer-job-priority-supported ( 1.3.18.0.2.4.1110 NAME 'printer-job-priority-supported' DESC 'Indicates the number of job priority levels supported by this Printer.' EQUALITY integerMatch ORDERING integerOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) An IPP/1.1 [RFC2911] conformant Printer, which supports job priority, always supports a full range of priorities from '1' to '100' (to ensure consistent behavior), therefore this attribute describes the 'granularity' of priority supported. Values of this attribute are from '1' to '100'. 4.27. printer-copies-supported ( 1.3.18.0.2.4.1118 NAME 'printer-copies-supported' DESC 'The maximum number of copies of a document that can be printed as a single job on this Printer.' EQUALITY integerMatch ORDERING integerOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) A positive value indicates the maximum supported copies. A value of '0' indicates no maximum limit. A value of '-1' indicates 'unknown'. Note: The syntax and values for this attribute are aligned with the equivalent attribute in the 'service:printer:' v2.0 template [SLPPRT20]. 4.28. printer-job-k-octets-supported ( 1.3.18.0.2.4.1111 NAME 'printer-job-k-octets-supported' DESC 'The maximum size in kilobytes (1,024 octets actually) incoming print job that this Printer will accept.' EQUALITY integerMatch ORDERING integerOrderingMatch Fleming, McDonald Expires 13 September 2014 [Page 32] Internet-Draft LDAP Schema for Printer Services 13 March 2014 SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) A positive value indicates the maximum supported job size. A value of '0' indicates no maximum limit. A value of '-1' indicates 'unknown'. Note: The syntax and values for this attribute are aligned with the equivalent attribute in the 'service:printer:' v2.0 template [SLPPRT20]. 4.29. printer-current-operator ( 1.3.18.0.2.4.1112 NAME 'printer-current-operator' DESC 'The identity of the current human operator responsible for operating this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) The value of this attribute SHOULD include information that would enable other humans to reach the operator, such as a telephone number. Note: For interoperability and consistent text display, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL or any C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD only contain CR and LF characters together (not as singletons). 4.30. printer-service-person ( 1.3.18.0.2.4.1113 NAME 'printer-service-person' DESC 'The identity of the current human service person responsible for servicing this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) Fleming, McDonald Expires 13 September 2014 [Page 33] Internet-Draft LDAP Schema for Printer Services 13 March 2014 The value of this attribute SHOULD include information that would enable other humans to reach the service person, such as a telephone number. Note: For interoperability and consistent text display, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL or any C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD only contain CR and LF characters together (not as singletons). 4.31. printer-delivery-orientation-supported ( 1.3.18.0.2.4.1114 NAME 'printer-delivery-orientation-supported' DESC 'List of delivery orientations of pages as they are printed and ejected supported by this Printer.' EQUALITY caseIgnoreMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of delivery orientations of pages as they are printed and ejected supported by this Printer. For example: 'unknown' 'face-up,face-down' Values defined in Printer MIB v2 [RFC3805] for prtOutputPageDeliveryOrientation are: 'face-up' 'face-down' Note: The value 'unknown' MUST only be reported if the corresponding Printer MIB attribute is not present, i.e., the value 'unknown' is an artifact of this LDAP mapping. Note: The syntax and values for this attribute are aligned with the equivalent attribute in the 'service:printer:' v2.0 template [SLPPRT20]. 4.32. printer-stacking-order-supported ( 1.3.18.0.2.4.1115 NAME 'printer-stacking-order-supported' DESC 'List of stacking orders of pages as they are printed and Fleming, McDonald Expires 13 September 2014 [Page 34] Internet-Draft LDAP Schema for Printer Services 13 March 2014 ejected supported by this Printer.' EQUALITY caseIgnoreMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of stacking orders of pages as they are printed and ejected supported by this Printer. For example: 'unknown' 'first-to-last' 'first-to-last,last-to-first' Values defined in Printer MIB v2 [RFC3805] for prtOutputStackingOrder are: 'first-to-last' 'last-to-first' Note: The value 'unknown' MUST only be reported if the corresponding Printer MIB attribute is not present, i.e., the value 'unknown' is an artifact of this LDAP mapping. Note: The syntax and values for this attribute are aligned with the equivalent attribute in the 'service:printer:' v2.0 template [SLPPRT20]. 4.33. printer-output-features-supported ( 1.3.18.0.2.4.1116 NAME 'printer-output-features-supported' DESC 'List of output features supported by this Printer.' EQUALITY caseIgnoreMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of output features supported by this Printer. For example: 'unknown' 'bursting,decollating' 'offset-stacking' Note: Length overflow in values of this attribute MUST be handled by multiple instances of this attribute, i.e., individual comma-delimited list members MUST NOT be truncated. Values defined in Printer MIB v2 [RFC3805] for prtOutputBursting, prtOutputDecollating, prtOutputPageCollated, and prtOutputOffsetStacking are: Fleming, McDonald Expires 13 September 2014 [Page 35] Internet-Draft LDAP Schema for Printer Services 13 March 2014 'bursting' 'decollating' 'page-collating' 'offset-stacking' Note: The value 'unknown' MUST only be reported if the corresponding Printer MIB attributes are not present, i.e., the value 'unknown' is an artifact of this LDAP mapping. Note: The syntax and values for this attribute are aligned with the equivalent attribute in the 'service:printer:' v2.0 template [SLPPRT20]. Note: Implementations MAY support other values. 4.34. printer-aliases ( 1.3.18.0.2.4.1108 NAME 'printer-aliases' DESC 'One of the site-specific administrative names of this Printer in addition to the value specified for printer-name.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Values of this attribute SHOULD be specified in the language specified in printer-natural-language-configured (for example, to support text-to-speech conversions), although the Printer's alias MAY be specified in any language. Note: Multiple values for this attribute are represented as multiple instances of this attribute. Note: For compatibility with IPP/1.1 [RFC2911], values of this attribute SHOULD NOT exceed 255 octets in length. Note: For interoperability, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; and (b) SHOULD NOT contain DEL or any C0 or C1 control characters. 4.35. printer-device-id ( 1.3.18.0.2.24.46.1.101 NAME 'printer-device-id' Fleming, McDonald Expires 13 September 2014 [Page 36] Internet-Draft LDAP Schema for Printer Services 13 March 2014 DESC 'The IEEE 1284 Device ID for this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) Values of this attribute SHOULD conform to IEEE-ISTO PWG Command Set Format for IEEE 1284 Device ID [PWG5107.2]. Note: For compatibility with [PWG5100.14] and [PWG5107.2], values of this attribute SHOULD NOT exceed 1023 octets in length. 4.36. printer-device-service-count ( 1.3.18.0.2.24.46.1.102 NAME 'printer-device-service-count' DESC 'The number of Printer (Print Service) instances configured on this Imaging Device (host system).' EQUALITY integerMatch ORDERING integerOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) A positive value indicates the number of Printer (Print Service) instances configured on this Imaging Device (host system). A value of '-1' indicates 'unknown'. A value of '0' is not meaningful (because this attribute must be reported by some Printer instance). Note: The syntax and values for this attribute are aligned with the equivalent 'device-service-count' attribute defined in [PWG5100.13]. 4.37. printer-uuid ( 1.3.18.0.2.24.46.1.104 NAME 'printer-uuid' DESC 'A URN specifying UUID of this Printer (Print Service) instance on this Imaging Device (host system).' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) The UUID of this Printer (Print Service) instance on this Imaging Device (host system). For example: Fleming, McDonald Expires 13 September 2014 [Page 37] Internet-Draft LDAP Schema for Printer Services 13 March 2014 'urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6' Values of this attribute MUST conform to the UUID URN namespace [RFC4122]. Note: For compatibility with [PWG5100.13] and [RFC4122], values of this attribute SHOULD NOT exceed 45 octets in length. Note: LDAP application clients SHOULD NOT attempt to use malformed URN values read from this attribute. LDAP administrative clients SHOULD not write malformed URN values into this attribute. Note: The syntax and values for this attribute are aligned with the equivalent 'printer-uuid' attribute defined in [PWG5100.13]. 4.38. printer-charge-info ( 1.3.18.0.2.24.46.1.105 NAME 'printer-charge-info' DESC 'Descriptive information about paid printing services for this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) For example: 'This Printer can be used for paid printing at 2 cents/page.' Note: For compatibility with [PWG5100.13], values of this attribute SHOULD NOT exceed 1023 octets in length. Note: For interoperability and consistent text display, values of this attribute: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain any C0 or C1 control characters except for HT, CR, and LF; and (c) SHOULD only contain CR and LF characters together (not as singletons). Note: The syntax and values for this attribute are aligned with the equivalent 'printer-charge-info' attribute defined in [PWG5100.13]. Fleming, McDonald Expires 13 September 2014 [Page 38] Internet-Draft LDAP Schema for Printer Services 13 March 2014 4.39. printer-charge-info-uri ( 1.3.18.0.2.24.46.1.106 NAME 'printer-charge-info-uri' DESC 'A URI for a human-readable Web page for paid printing services for this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) For example: 'http://example.com/charges' Values of URI SHOULD conform to [STD66], although URI schemes can be defined which do not conform to [STD66] (see [BCP35]). Note: For compatibility with IPP/1.1 [RFC2911] and [PWG5100.13], values of this attribute SHOULD NOT exceed 1023 octets in length. Note: LDAP application clients SHOULD NOT attempt to use malformed URI values read from this attribute. LDAP administrative clients SHOULD not write malformed URI values into this attribute. Note: The syntax and values for this attribute are aligned with the equivalent 'printer-charge-info-uri' attribute defined in [PWG5100.13]. 4.40. printer-geo-location ( 1.3.18.0.2.24.46.1.107 NAME 'printer-geo-location' DESC 'A geo: URI specifying the geographic location of this Printer.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 SINGLE-VALUE ) For example: 'geo:13.4125,103.8667' Values of this attribute MUST conform to the 'geo' URI scheme [RFC5870]. Fleming, McDonald Expires 13 September 2014 [Page 39] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Note: For compatibility with IPP/1.1 [RFC2911] and [PWG5100.13], values of this attribute SHOULD NOT exceed 1023 octets in length. Note: LDAP application clients SHOULD NOT attempt to use malformed URI values read from this attribute. LDAP administrative clients SHOULD not write malformed URI values into this attribute. Note: The syntax and values for this attribute are aligned with the equivalent 'printer-geo-location' attribute defined in [PWG5100.13]. 4.41. printer-ipp-features-supported ( 1.3.18.0.2.24.46.1.108 NAME 'printer-ipp-features-supported' DESC 'List of IPP protocol features that this Printer supports.' EQUALITY caseIgnoreMatch SUBSTR caseIgnoreSubstringsMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.15 ) Comma-delimited list of IPP protocol features that this Printer supports. For example: 'none' 'unknown' 'proof-print' 'ipp-everywhere,proof-print,job-save' Note: Length overflow in values of this attribute MUST be handled by multiple instances of this attribute, i.e., individual comma-delimited list members MUST NOT be truncated. Values of this attribute SHOULD specify only IANA-registered keywords for the 'ipp-features-supported' attribute defined in [PWG5100.13] or other standards track IETF or IEEE-ISTO PWG specifications if this Printer implementation meets all of the IPP feature-specific conformance requirements. IANA-registered values include: 'none' (No extension features are supported) 'document-object' (Document object defined in [PWG5100.5]) 'job-save' (Job save defined in [PWG5100.11]) 'ipp-everywhere' (IPP Everywhere defined in [PWG5100.14]) 'page-overrides' (Page overrides defined in [PWG5100.6]) 'proof-print' (Proof print defined in [PWG5100.11]) 'subscription-object' (Subscription object defined in [RFC3995]) Fleming, McDonald Expires 13 September 2014 [Page 40] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Note: The value 'unknown' MUST only be reported if the corresponding IPP Printer attribute is not present, i.e., the value 'unknown' is an artifact of this LDAP mapping. Note: The syntax and values for this attribute are aligned with the equivalent 'printer-ipp-features-supported' attribute defined in [PWG5100.13]. Fleming, McDonald Expires 13 September 2014 [Page 41] Internet-Draft LDAP Schema for Printer Services 13 March 2014 5. Definition of Syntaxes No new attribute syntaxes are defined by this document. The attribute types defined in Section 4 of this document reference syntax OIDs defined in Section 3 of [RFC4517], which are summarized below: Syntax OID Syntax Description ------------------------------ ------------------ 1.3.6.1.4.1.1466.115.121.1.7 Boolean 1.3.6.1.4.1.1466.115.121.1.15 DirectoryString (UTF-8 [STD63]) 1.3.6.1.4.1.1466.115.121.1.27 Integer 6. Definition of Matching Rules No new matching rules are defined by this document. The attribute types defined in Section 4 of this document reference matching rules defined in Section 4 of [RFC4517], which are summarized below: Matching Rule OID Matching Rule Name Usage ------------------------------ ------------------ ----- 2.5.13.13 booleanMatch EQUALITY 2.5.13.2 caseIgnoreMatch EQUALITY 2.5.13.14 integerMatch EQUALITY 2.5.13.15 integerOrderingMatch ORDERING 2.5.13.4 caseIgnoreSubstringsMatch SUBSTR Fleming, McDonald Expires 13 September 2014 [Page 42] Internet-Draft LDAP Schema for Printer Services 13 March 2014 7. IANA Considerations This document does not define any new syntaxes or matching rules. This document does define the following Object Identifier Descriptors, for registration by IANA when this RFC is published: 7.1. Registration of Object Classes Subject: Request for LDAP Descriptor Registration Descriptor (short name): see table below Object Identifier: see table below Person & email address to contact for further information: see below Usage: object class Specification: RFCnnnn [ [RFC Editor: to be assigned] ] Author/Change Controller: Ira McDonald High North Inc 221 Ridge Ave Grand Marais, MI 49839 USA Phone: +1 906-494-2434 Email: blueroofmusic@gmail.com Comments: Object Class OID ------------------------------------ ----------------------- slpServicePrinter 1.3.18.0.2.6.254 printerAbstract 1.3.18.0.2.6.258 printerService 1.3.18.0.2.6.255 printerServiceAuxClass 1.3.18.0.2.6.257 printerIPP 1.3.18.0.2.6.256 printerLPR 1.3.18.0.2.6.253 Fleming, McDonald Expires 13 September 2014 [Page 43] Internet-Draft LDAP Schema for Printer Services 13 March 2014 7.2. Registration of Attribute Types Subject: Request for LDAP Descriptor Registration Descriptor (short name): see table below Object Identifier: see table below Person & email address to contact for further information: see below Usage: attribute type Specification: RFCnnnn [ [RFC Editor: to be assigned] ] Author/Change Controller: Ira McDonald High North Inc 221 Ridge Ave Grand Marais, MI 49839 USA Phone: +1 906-494-2434 Email: blueroofmusic@gmail.com Comments: Attribute Type OID ------------------------------------ ----------------------- printer-uri 1.3.18.0.2.4.1140 printer-xri-supported 1.3.18.0.2.4.1107 printer-name 1.3.18.0.2.4.1135 printer-natural-language-configured 1.3.18.0.2.4.1119 printer-location 1.3.18.0.2.4.1136 printer-info 1.3.18.0.2.4.1139 printer-more-info 1.3.18.0.2.4.1134 printer-make-and-model 1.3.18.0.2.4.1138 printer-ipp-versions-supported 1.3.18.0.2.4.1133 printer-multiple-document-jobs-supported 1.3.18.0.2.4.1132 printer-charset-configured 1.3.18.0.2.4.1109 printer-charset-supported 1.3.18.0.2.4.1131 printer-generated-natural-language-supported 1.3.18.0.2.4.1137 printer-document-format-supported 1.3.18.0.2.4.1130 printer-color-supported 1.3.18.0.2.4.1129 printer-compression-supported 1.3.18.0.2.4.1128 printer-pages-per-minute 1.3.18.0.2.4.1127 printer-pages-per-minute-color 1.3.18.0.2.4.1126 printer-finishings-supported 1.3.18.0.2.4.1125 printer-number-up-supported 1.3.18.0.2.4.1124 printer-sides-supported 1.3.18.0.2.4.1123 Fleming, McDonald Expires 13 September 2014 [Page 44] Internet-Draft LDAP Schema for Printer Services 13 March 2014 printer-media-supported 1.3.18.0.2.4.1122 printer-media-local-supported 1.3.18.0.2.4.1117 printer-resolution-supported 1.3.18.0.2.4.1121 printer-print-quality-supported 1.3.18.0.2.4.1120 printer-job-priority-supported 1.3.18.0.2.4.1110 printer-copies-supported 1.3.18.0.2.4.1118 printer-job-k-octets-supported 1.3.18.0.2.4.1111 printer-current-operator 1.3.18.0.2.4.1112 printer-service-person 1.3.18.0.2.4.1113 printer-delivery-orientation-supported 1.3.18.0.2.4.1114 printer-stacking-order-supported 1.3.18.0.2.4.1115 printer-output-features-supported 1.3.18.0.2.4.1116 printer-aliases 1.3.18.0.2.4.1108 ------------------------------------ ----------------------- printer-device-id 1.3.18.0.2.24.46.1.101 printer-device-service-count 1.3.18.0.2.24.46.1.102 printer-uuid 1.3.18.0.2.24.46.1.104 printer-charge-info 1.3.18.0.2.24.46.1.105 printer-charge-info-uri 1.3.18.0.2.24.46.1.106 printer-geo-location 1.3.18.0.2.24.46.1.107 printer-ipp-features-supported 1.3.18.0.2.24.46.1.108 Fleming, McDonald Expires 13 September 2014 [Page 45] Internet-Draft LDAP Schema for Printer Services 13 March 2014 8. Internationalization Considerations All text string attributes defined in this document of syntax 'DirectoryString' [RFC4517] have values that are encoded in UTF-8 [STD63], as required by [RFC4517]. A language tag [BCP47] for all of the text string attributes defined in this document is contained in the printer-natural-language-configured attribute. Therefore, all object classes defined in this document conform to the IETF Policy on Character Sets and Languages [BCP18]. Note: For interoperability and consistent text display, values of attributes defined in this document: (a) SHOULD be normalized as recommended in Unicode Format for Network Interchange [RFC5198]; (b) SHOULD NOT contain DEL or any C0 or C1 control characters except for HT, CR, and LF; (c) SHOULD only contain CR and LF characters together (not as singletons); and SHOULD NOT contain HT, CR, or LF characters in names, e.g., printer-name and printer-aliases. 9. Security Considerations See [RFC4513] for detailed guidance on authentication methods for LDAP and the use of TLS/1.2 [RFC5246] to supply connection confidentiality and data integrity for LDAP sessions. As with any LDAP schema, it is important to protect specific entries and attributes with the appropriate access control. It is particularly important that only administrators can modify entries defined in this LDAP Printer schema. Otherwise, an LDAP client might be fooled into diverting print service requests from the original Printer (or spooler) to a malicious intruder's host system, thus exposing the information in printed documents. Note: Security vulnerabilities can arise if DEL or any C0 or C1 control characters are included in names, e.g., printer-name or printer-aliases. For additional security considerations of deploying Printers in an IPP environment, see Section 8 of [RFC2911]. Fleming, McDonald Expires 13 September 2014 [Page 46] Internet-Draft LDAP Schema for Printer Services 13 March 2014 10. References 10.1. Normative References [BCP47] A. Phillips, Ed., M. Davis, Ed. Tags for Identifying Languages, BCP 47, RFC 5646, September 2009. [IANACHAR] Internet Assigned Numbers Authority (IANA) Registry "Character Sets" [IANAIPP] Internet Assigned Numbers Authority (IANA) Registry "Internet Printing Protocol" [IANAMIME] Internet Assigned Numbers Authority (IANA) Registry "MIME Media Types" [IPPSURI] McDonald, I., and M. Sweet. IPP over HTTPS Transport Binding and 'ipps' URI Scheme, draft-mcdonald-ipps-uri-scheme-xx.txt, work-in-progress. [PWG5100.5] Carney, D., Hastings, T., and P. Zehler. Internet Printing Protocol (IPP): Document Object, PWG 5100.5, October 2003. [PWG5100.6] Zehler, P., Herriot, R., and K. Ocke. Internet Printing Protocol (IPP): Page Overrides, October 2003. [PWG5100.12] Bergman, R., McDonald, I., and M. Sweet. Internet Printing Protocol Version 2.0 Second Edition (IPP/2.0 SE), PWG 5100.12, February 2011. [PWG5100.13] Sweet, M., and I. McDonald. IEEE-ISTO PWG IPP Job and Printer Extensions - Set 3, PWG 5100.13, July 2012. [PWG5100.14] Sweet, M., and I. McDonald. IEEE-ISTO PWG IPP Everywhere, January 2013. Fleming, McDonald Expires 13 September 2014 [Page 47] Internet-Draft LDAP Schema for Printer Services 13 March 2014 [PWG5101.1] Bergman, R., and T. Hastings. IEEE-ISTO PWG Media Standardized Names, PWG 5101.1, February 2002. [PWG5107.2] I. McDonald. IEEE-ISTO PWG Command Set for IEEE 1284 Device ID, PWG 5107.2, May 2010. [RFC2119] S. Bradner. Key words for use in RFCs to Indicate Requirement Levels, RFC 2119 / BCP 14, March 1997. [RFC2617] Franks, J., Hallam-Baker, P., Hostetler, J., Lawrence, S., Leach, P., Luotonen, A., and L. Stewart. HTTP Authentication: Basic and Digest Access Authentication, RFC 2617, June 1999. [RFC2911] T. Hastings, Ed., Herriot, R., Isaacson, S., and P. Powell. Internet Printing Protocol/1.1: Model and Semantics, RFC 2911, September 2000. [RFC2926] Kempf, J., Moats, R., and P. St. Pierre. Conversion of LDAP Schemas to and from SLP Templates, RFC 2926, September 2000. [RFC3510] Herriot, R., and I. McDonald. Internet Printing Protocol 1.1: IPP URL Scheme, RFC 3510, April 2003. [RFC3987] Duerst, M., and M. Suignard. Internationalized Resource Identifiers (IRI), RFC 3987, January 2005. [RFC3995] Herriot, R., and T. Hastings. Internet Printing Protocol (IPP): Event Notifications and Subscriptions, RFC 3995, March 2005. [RFC4122] Leach, P., Mealling, M., and R. Salz. A Universally Unique IDentifier (UUID) URN Namespace, RFC 4122, July 2005. [RFC4510] K. Zeilenga, Ed. Lightweight Directory Access Protocol (LDAP): Technical Specification Road Map, RFC 4510, June 2006. [RFC4513] R. Harrison, Ed. Lightweight Directory Access Protocol (LDAP): Authentication Methods and Security Mechanisms, RFC 4513, June 2006. [RFC4517] S. Legg, Ed. Lightweight Directory Access Protocol (LDAP): Syntaxes and Matching Rules, RFC 4517, June 2006. [RFC4519] A. Sciberras, Ed. Lightweight Directory Access Protocol (LDAP): Schema for User Applications, RFC 4519, June 2006. Fleming, McDonald Expires 13 September 2014 [Page 48] Internet-Draft LDAP Schema for Printer Services 13 March 2014 [RFC4524] K. Zeilenga, Ed. COSINE LDAP/X.500 Schema, RFC 4524, June 2006. [RFC5198] Klensin, J., and M. Padlipsky. Unicode Format for Network Interchange, RFC 5198, March 2008. [RFC5246] Dierks, T., and E. Rescorla. The Transport Layer Security (TLS) Protocol Version 1.2, RFC 5246, August 2008. [RFC5280] Cooper, D., Santesson, S., Farrell, S., Boeyen, S., Housley, R., and W. Polk. Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile, RFC 5280, May 2008. [RFC5870] Mayrhofer, A., and C. Spanring. A Uniform Resource Identifier for Geographic Locations ('geo' URI), RFC 5870, June 2010. [STD63] F. Yergeau. UTF-8, a Transformation Format of ISO 10646, STD 63, RFC 3629, November 2003. [STD66] Berners-Lee, T., Fielding, R., and L. Masinter. Uniform Resource Identifier (URI): Generic Syntax, STD 66, RFC 3986, January 2005. 10.2. Informative References [BCP13] Freed, N., Klensin, J., and T. Hansen. Media Type Specifications and Registration Procedures, BCP 13, RFC 6838, January 2013. [BCP18] H. Alvestrand. IETF Policy on Character Sets and Languages, BCP 18, RFC 2277, January 1998. [BCP19] Freed, N., and J. Postel. IANA Charset Registration Procedures, BCP 19, RFC 2978, October 2000. [BCP35] Hansen, T., Hardie, T., and L. Masinter. Guidelines and Registration Procedures for New URI Schemes, BCP 35, RFC 4395, February 2006. [IANASLP] Internet Assigned Numbers Authority (IANA) Registry "Service Location Protocol, Version 2 (SLPv2) Templates" [PWG] IEEE-ISTO Printer Working Group (PWG) Fleming, McDonald Expires 13 September 2014 [Page 49] Internet-Draft LDAP Schema for Printer Services 13 March 2014 [PWGIPP] IEEE-ISTO PWG Internet Printing Protocol Working Group [RFC1179] L. McLaughlin. Line Printer Daemon Protocol, RFC 1179, August 1990. [RFC1951] P. Deutsch. DEFLATE Compressed Data Format Specification Version 1.3, RFC 1951, May 1996. [RFC1952] P. Deutsch. GZIP File Format Specification Version 4.3, RFC 1952, May 1996. [RFC1977] V. Schryver. PPP BSD Compression Protocol, RFC 1977, August 1996. [RFC2079] M. Smith. Definition of an X.500 Attribute Type and an Object Class to Hold Uniform Resource Identifiers (URIs), RFC 2079, January 1997. [RFC2566] deBry, R., Hastings, T., Herriot, R., Isaacson, S., and P. Powell. Internet Printing Protocol/1.0: Model and Semantics, RFC 2566, April 1999. [RFC2608] Guttman, E., Perkins, C., Veizades, J., and M. Day. Service Location Protocol v2, RFC 2608, June 1999. [RFC2609] Guttman, E., Perkins, C., and J. Kempf. Service Templates and Service: Schemes, RFC 2609, June 1999. [RFC3712] Fleming, P., and I. McDonald. Lightweight Directory Access Protocol (LDAP): Schema for Printer Services, RFC 3712, February 2004. [RFC4559] Jaganathan, K., Zhu, L., and J. Brezak. SPNEGO-based Kerberos and NTLM HTTP Authentication in Microsoft Windows, RFC 4559, June 2006. [SLPPRT20] St. Pierre, P., Isaacson, S., and I. McDonald. Definition of of the PrinterAbstract Service Type v2.0, May 2000. Reviewed and approved by IETF SLP Designated Expert, according to Section 5 'IANA Considerations' in [RFC2609]. Archived in [IANASLP] as "printer.2.0.en". 11. Acknowledgments The editors wish to acknowledge significant contributions from Ken Jones and Harry Lewis and excellent comments from Patrik Faltstrom, Ryan Moats, Robert Moore, Lee Rafalow, Kimberly Reger, and Kurt Fleming, McDonald Expires 13 September 2014 [Page 50] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Zeilenga during the development of the original LDAP Printer schema [RFC3712]. The editors wish to acknowledge excellent comments from Alexey Melnikov, Tom Petch, and Mike Sweet during the development of the current LDAP Printer schema. Thanks to the members of the IEEE-ISTO PWG IPP Working Group, for their review comments and help in preparing this document. 12. Appendix A - Changes since RFC 3712 1) Added many editorial corrections and clarifications - corrected typos, missing words, and ambiguous sentences; - replaced lowercase 'printer' with titlecase 'Printer' for readability and consistency with IETF and IEEE-ISTO PWG IPP standards usage; - added implementation notes; - updated and added references. 2) Deleted length restrictions from formal definitions of DirectoryString syntax attributes - replaced with notes recommending length restrictions for compatibility with existing implementations of [RFC3712] and underlying string length limits in [RFC2707], [RFC2911], [RFC3805], [PWG5107.2], [PWG5100.13], and [PWG5100.14]. 3) Added new Printer attributes defined in [PWG5107.2], [PWG5100.13], and [PWG5100.14]. - see the table of Printer attributes and source documents in section 4 'Definition of Attribute Types' in this document; - added support for IEEE-ISTO PWG IPP Everywhere [PWG5100.14] project. 4) Added implementation note to section 4 about string encodings - added discussion of 'List of xxx' and and 'One of xxx' encodings; - stated that any of these attributes can be represented as multiple instances (i.e., to avoid length overflow). 5) Improved comma-delimited examples of string attributes - added both single-valued and multi-valued examples. 6) Clarified use of printer-xri-supported attribute - added examples to show optional *trailing* whitespace after '<' delimiters. 7) Clarified section 8 'Internationalization Considerations' Fleming, McDonald Expires 13 September 2014 [Page 51] Internet-Draft LDAP Schema for Printer Services 13 March 2014 - added note about Network Unicode [RFC5198] and avoiding use of C0 and C1 control characters. 8) Clarified section 9 'Security Considerations' - added note about security vulnerabilities caused by use of DEL or any C0 or C1 control characters in names. 9) Clarified terms and abbreviations - added 'Appendix B - Abbreviations' for acronyms. 10) Changed intended document category to 'Standards Track' - for consistency with more recent LDAP schema specs and IEEE-ISTO PWG IPP Everywhere [PWG5100.14]; - replaced 'must' with 'MUST', 'should' with 'SHOULD', and 'may' with 'can' or 'MAY' (as appropriate) for Standards Track document. 13. Appendix B - Abbreviations Used in this Document This document makes use of the following abbreviations (given with their expanded forms and references for further reading): IANA - Internet Assigned Numbers Authority IEEE - Institute of Electrical and Electronics Engineers IPP - Internet Printing Protocol [RFC2911] and [PWG5100.12] ISTO - IEEE Industry Standards and Technology Organization PWG - IEEE-ISTO Printer Working Group RFC - Request for Comments TLS - Transport Layer Security [RFC5246] URI - Uniform Resource Identifier [STD66] URL - Uniform Resource Locator [STD66] UTF-8 - Unicode Transformation Format - 8-bit [STD63] Fleming, McDonald Expires 13 September 2014 [Page 52] Internet-Draft LDAP Schema for Printer Services 13 March 2014 14. Appendix X - Change History [ [RFC Editor: This section to be deleted before RFC publication] ] 13 March 2014 - draft-mcdonald-ldap-printer-schema-07.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Global - updated publication and expiration dates in copyright, header, footer, and boilerplate. Editorial - revised sections 4, 4.2, and 4.24 to add implementation notes about different field delimiters in printer-xri-supported and printer-resolution-supported (for compatibility with SLP template), per PWG IPP WG. Editorial - revised appendix A 'Changes since RFC 3712' to correct typos and expand PWG IPP Everywhere reference, per PWG IPP WG. 3 March 2014 - draft-mcdonald-ldap-printer-schema-06.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Global - updated publication and expiration dates in copyright, header, footer, and boilerplate. Global - replaced 'SHOULD not' w/ 'SHOULD NOT' for RFC 2911 compliance, per Alexey Melnikov. Editorial - revised Abstract and section 1 Introduction to clarify that this document is an individual submission to the IETF by the IPP WG of the IEEE-ISTO PWG, per Tom Petch and IPP WG review. Editorial - revised Abstract and section 1 Introduction to clarify that this document obsoletes [RFC3712], per Alexey Melnikov. Editorial - added section 1.1 'Relationship to SLP Printer Service' and section 1.2 'Source of LDAP Printer Attributes' for clarity. Editorial - added section 1.3 'Sources of LDAP Printer Schema OIDs' to describe permanent delegation of "1.3.18.0.2.24.46" to the IEEE-ISTO PWG by IBM in October 2011, per Alexey Melnikov. Editorial - added section 1.4 'Rationale for Design Choices' for clarity. Editorial - revised sections 3.1, 3.4, 3.5, and 3.6 to delete erroneous SHOULD references to structural classes, per Alexey Melnikov. Editorial - revised section 4 to clarify reference to section 4 of [RFC4517] and forward reference to section 6 of LDAP Printer Schema, per Alexey Melnikov. Editorial - revised section 4 to add implementation note about compatibility with existing implementations of [RFC3712] and underlying string length limits in [RFC2707], [RFC2911], [RFC3805], [PWG5107.2], [PWG5100.13], and [PWG5100.14], per Alexey Melnikov. Editorial - revised section 4.4 to change SHOULD to MUST for conformance to [BCP47] for natural language tags, per Alexey Melnikov. Editorial - revised section 4.4 printer-natural-language-configured and section 4.13 printer-generated-natural-language-supported Fleming, McDonald Expires 13 September 2014 [Page 53] Internet-Draft LDAP Schema for Printer Services 13 March 2014 definitions to clarify that they refer to LDAP Printer in syntax DirectoryString (UTF-8), per Alexey Melnikov. Editorial - revised section 4.11 printer-charset-configured and section 4.12 printer-charset-supported definitions to clarify that they refer to IPP protocol values and that corresponding LDAP Printer attributes are always in syntax DirectoryString (UTF-8), per Alexey Melnikov. Editorial - revised section 4.20 printer-number-up-supported and section 4.35 printer-device-id definitions to add missing SINGLE-VALUE clause, per Alexey Melnikov. Editorial - revised section 4.35 printer-device-id to delete confusing and redundant note about ordering of key/value pairs within LDAP attribute values (since this is clearly explained in [PWG5107.2]), per Alexey Melnikov. Editorial - revised section 4 syntaxes of printer-uri, printer-xri-supported, printer-name, printer-natural-language-configured, printer-location, printer-info, printer-more-info, printer-make-and-model, printer-ipp-versions-supported, printer-charset-configured, printer-charset-supported, printer-generated-natural-language-supported, printer-document-format-supported, printer-compression-supported, printer-finishings-supported, printer-sides-supported, printer-media-supported, printer-media-local-supported, printer-resolution-supported, printer-current-operator, printer-service-person, printer-delivery-orientation-supported, printer-stacking-order-supported, printer-output-features-supported, printer-aliases, printer-device-id, printer-uuid, printer-charge-info, printer-charge-info-uri, printer-geo-location, printer-ipp-features-supported, to remove length restrictions in syntax and add textual notes instead about IPP compatibility (where applicable), per Alexey Melnikov. Editorial - added appendix A 'Changes since RFC 3712', per Alexey Melnikov. Editorial - added missing informative reference to [RFC3712]. 19 September 2013 - draft-mcdonald-ldap-printer-schema-05.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Global - updated publication and expiration dates in copyright, header, footer, and boilerplate. Global - updated references, per IEEE-ISTO PWG IPP WG review. 17 May 2013 - draft-mcdonald-ldap-printer-schema-04.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Global - updated publication and expiration dates in copyright, header, footer, and boilerplate. Global - added references to IPP Everywhere, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.41 printer-ipp-features-supported to show 'ipp-everywhere' defined in PWG 5100.14, per IEEE-ISTO PWG IPP Fleming, McDonald Expires 13 September 2014 [Page 54] Internet-Draft LDAP Schema for Printer Services 13 March 2014 WG review. 18 November 2012 - draft-mcdonald-ldap-printer-schema-03.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Global - updated publication and expiration dates in copyright, header, footer, and boilerplate. Global - updated contact info for Pat Fleming. Global - updated various references. Global - added references to IEEE-ISTO PWG and IEEE-ISTO PWG IPP WG, per IEEE-ISTO PWG IPP WG review. Global - deleted all references to PWG IPP Everywhere and values defined in that specification, per IEEE-ISTO PWG IPP WG review. Global - deleted 'printer-device-uuid' attribute, per IEEE-ISTO PWG IPP WG review. Global - revised all 'One of' attributes to add implementation note that multiple values are represented as multiple instances, per IEEE-ISTO PWG IPP WG review. Global - revised all 'List of' attributes to add implementation note that length overflow is handled by multiple instances, per IEEE-ISTO PWG IPP WG review. Global - revised many DESC clauses to correct truncation due to no-fill formatting, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4 Definition of Attribute Types to add implementation note recommending use of Network Unicode [RFC5198], recommending against the use of DEL or any C0 or C1 control characters (except HT, CR, and LF), and recommending against HT, CR, and LF in names (e.g., printer-name or printer-aliases), per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4 Definition of Attribute Types to add implementation note contrasting 'List of xxx' and 'One of xxx' and stating that any of these attributes can be represented as multiple instances (i.e., to avoid length overflow), per IEEE-ISTO PWG IPP WG review. Global - revised all comma-delimited examples to include both single- and multi-valued examples, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.2 printer-xri-supported text and examples to show optional *trailing* whitespace after '<' delimiters, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.3 printer-name to break recommendations into separate implementation notes, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.20 printer-number-up-supported to add note explaining that this differs from the corresponding IPP attribute and is mapped from the largest reported value in IPP, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.22 printer-media-supported to separate examples of media sizes, types, and colors, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.24 printer-resolution-supported text and examples to show optional *trailing* whitespace after '>' delimiters, per IEEE-ISTO PWG IPP WG review. Fleming, McDonald Expires 13 September 2014 [Page 55] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Editorial - revised section 4.34 printer-aliases to add Network Unicode note like printer-name, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.35 printer-device-id to explicitly list the required key/value pairs as in PWG IPP Everywhere, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.37 printer-uuid to add example of a valid UUID per [RFC4122], per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.36 printer-device-service-count to add example, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.39 printer-charge-info-uri to add example, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.40 printer-geo-location to add example of a value 'geo:' URI per [RFC5870], per IEEE-ISTO PWG IPP WG review. Editorial - revised section 4.41 printer-ipp-features-supported to delete 'ipp-everywhere' and add 'unknown' (with explanation), per IEEE-ISTO PWG IPP WG review. Editorial - revised section 7 IANA Considerations to correct truncation of some OIDs, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 7.2 Registration of Attribute Types to delete issue for OID assignments, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 8 Internationalization Considerations to add detailed note about Network Unicode [RFC5198] and avoiding use of C0 and C1 control characters, per IEEE-ISTO PWG IPP WG review. Editorial - revised section 9 Security Considerations to add note about security vulnerabilities caused by use of DEL or any C0 or C1 control characters in names, per IEEE-ISTO PWG IPP WG review. Editorial - added appendix B Abbreviations, per IEEE-ISTO PWG IPP WG review. 20 May 2012 - draft-mcdonald-ldap-printer-schema-02.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Cover - changed intended category to Standards Track for consistency w/ recent LDAP schema specs and IPP Everywhere recommendations. Global - replace 'must' w/ 'MUST', 'should' w/ 'SHOULD', and 'may' w/ 'can' or 'MAY' (as appropriate) for Standards Track document. Global - updated publication and expiration dates in copyright, header, footer, and boilerplate. Global - replaced [RFC1759] references (obsolete) w/ [RFC 3805], per IEEE-ISTO PWG IPP WG review. Global - replaced lowercase 'printer' with titlecase 'Printer' for readability and consistency with IPP standards usage. Revised section 1, to correct format of reference to IPP JPS3, per IEEE-ISTO PWG IPP WG review. Revised section 3.5, section 4.1, and section 4.2 to add references to IPP and IPPS URI scheme specs, per IEEE-ISTO PWG IPP WG review. Revised section 4.2 to correct reference for 'digest' and add reference for 'certificate' to [RFC5280], per IEEE-ISTO PWG IPP WG review. Revised sections 4.5, 4.6, 4.8, 4.29, 4.30, and 4.36 to add note about use of Network Unicode [RFC5198] and prohibition against all C0 and C1 control characters except HT, CR, and LF, per IEEE-ISTO PWG Fleming, McDonald Expires 13 September 2014 [Page 56] Internet-Draft LDAP Schema for Printer Services 13 March 2014 IPP WG review. Revised section 4.9 to enumerate all known IPP versions (noting that IPP/1.0 is OBSOLETE) and refer to IANA IPP Registry, per IEEE-ISTO PWG IPP WG review. Revised section 4.22 to replace legacy examples w/ examples of media size names, media types, and media colors defined in [PWG5101.1], per IEEE-ISTO PWG IPP WG review. Revised section 4.24 to delete obscure note about delimiter, per IEEE-ISTO PWG IPP WG review. Revised sections 4.25, 4.31, 4.32, and 4.33 to add note about use of 'unknown' (out-of-band value) ONLY when the correspond IPP or Printer MIB attributes are not present (i.e., artifact of LDAP mapping), per IEEE-ISTO PWG IPP WG review. Revised section 4.39 to add exhaustive list of feature keywords from [PWG5100.JPS3] and [PWG5100.EVE], per IEEE-ISTO PWG IPP WG review. Added section 4.x 'printer-device-service-count' aligned w/ "device-service-count" in [PWG5100.JPS3], per IEEE-ISTO PWG IPP WG review. Added section 4.x 'printer-device-uuid' aligned w/ "device-uuid" in [PWG5100.JPS3], per IEEE-ISTO PWG IPP WG review. Revised sections 4.x to add length restrictions to unbounded strings (text, URI, and UUID) w/ maximum 255 octets (consistent w/ RFC 3712), verify attribute lengths (per source IPP attribute), and clarify "list of" (comma-delimited) versus "one of" (simple multi-valued) for all 'printer-xxx-supported' attributes, per IEEE-ISTO PWG IPP WG review. Revised section 7.2 to assign new OIDs for the LDAP Printer Schema new attributes, per IEEE-ISTO PWG IPP WG review. Revised section 10.1 to add BCP 14 to [RFC2119] definition, per IEEE-ISTO PWG IPP WG review. Revised section 10.1 and section 10.2 to move [RFC2617], [RFC3987], [RFC4122], [RFC5198], [RFC5246], [RFC5280], [RFC5870], [STD63] from informative to normative references, per IEEE-ISTO PWG IPP WG review. 3 April 2012 - draft-mcdonald-ldap-printer-schema-01.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Global - changed [IPPEVE1] to [PWG5100.EVE] and [IPPJPS3] to [PWG5100.JPS3], per IEEE-ISTO PWG IPP WG review. Revised section 1.1, to add printer-charge-info-uri and printer-uuid to discussion of URI syntax, per IEEE-ISTO PWG IPP WG review. Revised section 1.2 and section 1.3, to add printer-device-id to discussions of equality and substring matching, per IEEE-ISTO PWG IPP WG review. Revised section 3.2, section 4, and section 7.2, to delete redundant printer-organization and printer-organizational-unit (already covered by 'O' and 'OU'), per IEEE-ISTO PWG IPP WG review. Revised section 3.2, section 4, and section 7.2, to add missing printer-charge-info, per IEEE-ISTO PWG IPP WG review. Revised section 3.5, section 4, and section 7.2, to rename printer-ipp-extensions-supported to printer-ipp-features-supported, per IEEE-ISTO PWG IPP WG review. Fleming, McDonald Expires 13 September 2014 [Page 57] Internet-Draft LDAP Schema for Printer Services 13 March 2014 Revised numerous section 4 subsections, to add references to [IANAIPP] or [RFC3805] as appropriate for enumerations and keywords, per IEEE-ISTO PWG IPP WG review. Revised section 4.2, to add 'negotiate' as value for 'auth' and references to [PWG5100.JPS3], [RFC4559], and [IANAIPP], per IEEE-ISTO PWG IPP WG review. Revised section 4.2, to use 'example.com' for all DNS names, per IEEE-ISTO PWG IPP WG review. Revised section 4.22 and section 4.23, to add normative reference to PWG Media Standardized Names [PWG5101.1], per IEEE-ISTO PWG IPP WG review. Revised section 4.24, to divide notes into two separate paragraphs, per IEEE-ISTO PWG IPP WG review. Revised section 4.31, section 4.32, and section 4.33, to change 'Values ... include' to 'Values ... are' (i.e., closed set), per IEEE-ISTO PWG IPP WG review. Revised section 4.35 printer-device-id, to add warning about ordering of required key/value pairs (first) and truncation only at key/value pair boundaries for interoperability, per IEEE-ISTO PWG IPP WG review. Revised section 4, to add printer-charge-info from [PWG5100.JPS3], per IEEE-ISTO PWG IPP WG review. Revised section 4.38 printer-geo-location, to change 'should' to 'must' for conformance to [RFC5870], per IEEE-ISTO PWG IPP WG review. Revised section 4.39, to change printer-ipp-extensions-supported to printer-ipp-features-supported per [PWG5100.JPS3] and add examples, per IEEE-ISTO PWG IPP WG review. Revised section 4 subsection printer-uuid, to change 'should' to 'must' for conformance to [RFC4122], per IEEE-ISTO PWG IPP WG review. Revised section 10 References, to update out-of-date references. 2 October 2011 - draft-mcdonald-ldap-printer-schema-00.txt Working draft - for IEEE-ISTO PWG IPP Everywhere project Revised document to add current I-D individual submission boilerplate. Revised Abstract and section 1 Introduction, to cite [PWG5107.2] and [PWG5100.JPS3] new attribute sources. Revised section 3.2 printerAbstract, to add new attributes from [PWG5107.2] and [IPPJPS3]. Revised section 3.5, to add new attributes from [IPPJPS3]. Revised section 4 Definition of Attribute Types, to add new attributes from [PWG5107.2] and [IPPJPS3] to table and later specific definitions. Revised section 7.2 Registration of Attribute Types, to add new attributes from [PWG5107.2] and [IPPJPS3] - new OIDs needed. Revised section 10 References, to update out-of-date references. Fleming, McDonald Expires 13 September 2014 [Page 58] Internet-Draft LDAP Schema for Printer Services 13 March 2014 15. Authors' Addresses Please send comments to the authors at the addresses listed below. Pat Fleming Independent 51796 171 Ave Pine Island, MN 55963 USA Phone: +1 507-356-8277 Email: patfleminghtc@gmail.com Ira McDonald High North Inc 221 Ridge Ave Grand Marais, MI 49839 USA Phone: +1 906-494-2434 Email: blueroofmusic@gmail.com Fleming, McDonald Expires 13 September 2014 [Page 59]