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the hostname is interpolated into the filename, we need to be sure
that the result of interpolation doesn't expose parts of the
filesystem that should be private. This was done by checking the
syntax of the Host: header according to RFC 1123 and RFC 952. However,
many people have broken configurations that violate this syntax
(frequently because they use underscores in their names), and it also
doesn't accommodate the current effort to internationalize the DNS. I
don't think the former is a compelling reason to relax the syntax
checking, but the latter does justify this change.

The only RFC on internationalized DNS at the moment is RFC 2825 which
is an introduction to how difficult the whole thing is; the other
official documentation is a pile of Internet Drafts produced by the
Internationalized Domain Names Working Group of the IETF (with names
starting "draft-ietf-idn-"). However they have very little to say
about URIs, and the current Internet draft about internationalized
URIs (draft-masinter-url-i18n-05) has very little to say about
hostnames :-( On the gripping hand there is some useful information at
<http://www.apng.org/idns/> where there is some iDNS testbed work
going on. The basic idea is that although the format of the hostnames
in the DNS itself remains compatible with RFC 1123, the actual
hostname presented to the resolver is in UTF8, and therefore the
hostname in the URL and Host: header is also in UTF8.

This change relaxes the checking so that only character sequences that
are sensitive to the filesystem are rejected, i.e. forward slashes,
backward slashes, and sequences of more than one dot.

PR: 6635


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  Newer canonicalization code should replace this patch entirely, however
  it's nice to have a working server as a starting point :-)


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where appropriate.  At least on my system virtual hosts seem to still work :)


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file_bucket read function now.  If we try to read from a file bucket and
it makes sense to convert that bucket to an MMAP, that just happens.


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  Per new-httpd discussions, this version of mod_autoindex has been set
  aside as a test for rputs style backwards compatibility.  It has really
  horrid chunking charateristics, so it was the ideal nominee for the job.

  Please refer to src/modules/standard/mod_autoindex.c for the complete
  revision history.  When rputs is entirely eliminated (if it ever is)
  then this version should be eliminated.


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Alter http_vhost.c to use the new apr_get_inaddr fucntion.  Old code is still
there just in case it breaks.  can someone check it who knows this stuff?


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  Return buff.h to the winnt mpm till Bill (or I, if I must) remove the
  acceptex style contexts into apr.


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    FS provider from the public API; bang up the FS internals for the
    now-private items and mechanisms; a bit more revamp to the FS walker
    top-level APIs to narrow in on obsoleting dav_walker_ctx.


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  (e.g. fetch /foo/ which redirects to /foo/index.html)


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things the first time.  The server compiles again after this change.


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requests.  This allows the byterange filter to work with the PDF plug-in.


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content-length has already been set.  If we don't, then we won't know if
the content-length has changed because some other filter changed the
length of the actual data.  We also ALWAYS want to calculate the content
length if we get the whole brigade in the first call to this function.


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a part of the server until the proxy is purged of BUFF however.


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before serving, since a filter may have caused the file pointer
to advance.


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if we decided to do so initially *and* we've seen all the data.

Prior to this change, for a http/1.1 request to mod_autoindex, the
unconditional call to ap_set_content_length() gave us the wrong
value (only taking into account the first brigade) and disabled
chunking.


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is completely in the core now.

Note that file handle caching is broken (nothing to do with
byte ranges).  mmap caches seem to work o.k.


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The sscanf() call was actually broken.


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functions to use it.  This is onyl the start and I'll pause a while before
I continue in case people really hate this.  The patch can be backed out and
all evidence will be removed, but I think this makes maintaining/developing
the code easier in the long term.


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This file will need a lot of work as it's using a lot of "raw" information
from socket structures that won't work with IPv6.  Needs to be abstracted out
and use APR instead.


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of a few...


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there is still some bogosity in there (huge buffer allocs!), and some
optimizations to be made, but this appears to fix byterange handling.


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Acrobat plug-in doesn't like it for some reason.  This does work better
than what we currently have, because at least it returns all of the
requested data.  This basically removes all BUFFs from the byte-range
code and removes all of the byte-range code from the default-handler.

Byte-ranges are now handled by a filter, which makes sense, and it allows
us to handle byte-ranges for all requests, not just files.


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can't check the return code.


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the byterange handling and ap_set_content_length().

[ ap_each_byterange() remains as an apr_size_t* so we don't mess up callers ]


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with no sendfile().


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signed values in these integers, and we return the error codes directly,
so we should always report the number of bytes read/written correctly.  If
we have an error, that is 0 bytes.  If that is true, then using signed
values doesn't make any sense.


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