Re: [apps-discuss] I-D Action: draft-ietf-appsawg-file-scheme-09.txt
Sean Leonard <dev+ietf@seantek.com> Sun, 15 May 2016 16:14 UTC
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To: Matthew Kerwin <matthew@kerwin.net.au>
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From: Sean Leonard <dev+ietf@seantek.com>
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Date: Sun, 15 May 2016 09:13:24 -0700
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Cc: draft-ietf-appsawg-file-scheme@ietf.org, IETF Apps Discuss <apps-discuss@ietf.org>
Subject: Re: [apps-discuss] I-D Action: draft-ietf-appsawg-file-scheme-09.txt
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On 5/15/2016 5:24 AM, Matthew Kerwin wrote: > > > On 15 May 2016 at 20:15, Sean Leonard <dev+ietf@seantek.com > <mailto:dev+ietf@seantek.com>> wrote: > > On 5/14/2016 10:15 PM, internet-drafts@ietf.org > <mailto:internet-drafts@ietf.org> wrote: > > A New Internet-Draft is available from the on-line > Internet-Drafts directories. > This draft is a work item of the ART Area General Applications > Working Group of the IETF. > > Title : The file URI Scheme > Author : Matthew Kerwin > Filename : draft-ietf-appsawg-file-scheme-09.txt > Pages : 18 > Date : 2016-05-14 > > > Did a full review; looks very good. Nice work! > > The References section lists several references to MSDN articles. > > Shorter MSDN article URLs are of the form: > https://msdn.microsoft.com/library/{ARTICLEID} > <https://msdn.microsoft.com/library/%7BARTICLEID%7D> > > Such as: > https://msdn.microsoft.com/library/gg465305 > https://msdn.microsoft.com/library/aa365247 > > I suggest simplifying the links, and updating the dates. Note that > some library articles have dates; others do not. For example, > [MS-DTYP] is most recently dated October 16, 2015, revision 30.0, > according to its changelog at article ID cc230273. > > > Well, I did access the en-us versions. When I go to the short URL you > linked above, I get the en-au versions ;) Yep. Short URL is language/locale-neutral. > > Nevertheless I can refresh the references and update the dates. I'm > confused, though; MS-DTYP now includes an ABNF (which is cool) but > it's broken (which is not cool.) I think I know what they meant to > say, but that's not what they've actually said. I don't feel great > referencing that, even informatively. Well, the best solution is to report it to Microsoft and get them to fix it. You can reference this thread, among others. I see the following problems with that ABNF in gg465305: host-name = "[" IPv6address ‘]" / IPv4address / reg-name has a turned comma; it should be: host-name = "[" IPv6address "]" / IPv4address / reg-name pchar, fchar, and schar are defined in the range 00h-FFh. However, the definition says that "The filespace selector is a null-terminatedUnicode character <https://msdn.microsoft.com/en-us/library/cc230275#gt_fd33af2e-e1ce-4f8e-a706-f9fb8123f9b0>string". The reference to "Unicode character" says "Unless otherwise specified, a 16-bit UTF-16 code unit." Also: "Unless otherwise specified, allUnicode strings <https://msdn.microsoft.com/en-us/library/cc230275#gt_b069acb4-e364-453e-ac83-42d469bb339e>follow the UTF-16LE encoding scheme with no Byte Order Mark (BOM)." (Unicode string) This would mean that the domain of the ABNF is 0000-FFFF. I am fairly certain that Windows does not enforce well-formedness Unicode surrogate sequences, which makes the ABNF easier: you can blow through %x80-FFFF without needing special handling of high and low surrogate points. /However/, the RPC type is defined as STRING, which is UCHAR*, which is "a null-terminated string of 8-bit characters". Therefore, we might be in UTF-8 land. If in UTF-8 land, is the UTF8-non-ascii production appropriate? (RFC 6532 & RFC 3629) I haven't groked pchar, fchar, or schar. Overall, however, the authors of that MS spec have to determine and fix: * Is the ABNF in 0000-FFFF (16-bit units), or 00-FF (8-bit units)? * Is UTF-8 or UTF-16 intended? * What's actually going on in real life? I know that the Windows API is UTF-16LE. What about SMB on the wire? > > > In Appendix C, a discussion of Win32 Namespaces is given, but then > it says "This specification does not define a mechanism for > translating namespaced paths to or from file URIs." Readers would > appreciate an informative reference for a mechanism to translate > namespaced paths to and from file URIs, especially since there is > a lot of technical content about Win32 processing in the rest of > the Appendices. > > > They might, but I don't have one. What would you suggest? What is > currently done? > Need someone else to chime in on this (and the other stuff). Sean
- [apps-discuss] I-D Action: draft-ietf-appsawg-fil… internet-drafts
- Re: [apps-discuss] I-D Action: draft-ietf-appsawg… Sean Leonard
- Re: [apps-discuss] I-D Action: draft-ietf-appsawg… Matthew Kerwin
- Re: [apps-discuss] I-D Action: draft-ietf-appsawg… Sean Leonard
- Re: [apps-discuss] I-D Action: draft-ietf-appsawg… Mark Nottingham
- Re: [apps-discuss] I-D Action: draft-ietf-appsawg… Matthew Kerwin
- Re: [apps-discuss] I-D Action: draft-ietf-appsawg… Mark Nottingham
- Re: [apps-discuss] I-D Action: draft-ietf-appsawg… Matthew Kerwin