parms to form_header_field() and it overlaid some vhost structures,
resulting in a segfault in check_hostalias().
[Greg Ames, Jeff Trawick]
Note: Not being familiar with the TRACE method I compared the 2.0
output with 1.3.9 output. The only difference is that with 2.0 we
get a Content-Length header field.
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again. The problem is that the amount of data read from the network,
is not necessarily the amount of data returned from the filters. It is
possible for input filters to add bytes to the data read from the network.
To fix the original bug, I just removed the line from ap_get_client_block
that decremented r->remaining, we allow the http_filter to do that for
us.
I have also removed an incorrect comment.
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which corresponded to r->remaining (in ap_get_client_block). However,
ap_get_client_block was *also* adjusting r->remaining. Net result was that
PUT (and probably POST) was broken. (at least on large inputs)
To fix it, I simply removed the indirection on "readbytes" for input
filters. There is no reason for them to return data (the brigade length is
the return length). This also simplifies a number of calls where people
needed to do &zero just to pass zero.
I also added a number of comments about operations and where things could be
improved, or are (semi) broken.
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determine how much data is returned to the previous filter. Prior to this
change, we used a field in the conn_rec to determine how much to return.
After this change, we use an argument to ap_get_brigade. This makes it
much more obvious how things work at all levels, so that module authors
can easily determine how much data is supposed to be returned to them.
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request, then the byterange filter should not try to redo the
work. The most common case of this happening, is a byterange
request going through the proxy, and the origin server handles
the byterange request. The proxy should ignore it.
Submitted by: Graham Leggett <minfrin@sharp.fm>
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told me I was wrong. I was wrong, and Greg was right. This commit
just moves the byterange filter and its related functions out of the core,
and puts them back in the HTTP specific module.
Submitted by: Greg Stein
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(header) through the filter stack, which just wrapped that response in
another set of headers.
Instead, just set the Allow header and return. The EOS will then flush that
header with the rest of the data through the header filter, and generate the
proper response.
Also, cleaned out the unused header_filter_ctx and the "len" variable from
the header filter, and added some comments here and there.
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controversial change, because this is kind of HTTP specific. However
many protocols should be able to take advantage of this kind of
information. I expect that headers will need one more layer of
indirection for multi-protocol work, but this is a small step in
the right direction.
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Add a debug assertion to verify that c->remain is zero when a new
request starts. ap_http_filter() does the wrong thing otherwise.
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- explicitly include apr_lib.h since ap_config.h doesn't
- use apr_want.h where possible
- use APR_HAVE_ where possible
- remove some unneeded includes
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*) fix terminate_header: don't assume anything about the brigade (especially
that its last bucket is a shared/heap bucket)
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the header string. This allows us to clean up the header handling a bit,
because we don't need to compute the correct length before we can create
the headers.
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hack to fix the bug, but it will need to be fixed for real. If
we find an error while sending out a custom error response, we back
up to the first non-OK request and send the data. Then, when we send
the EOS from finalize_request_protocol, we go to the last request,
to ensure that we aren't sending an EOS to a request that has already
received one. Because the data is sent on a different request than
the EOS, the error text never gets sent down the filter stack. This
fixes the problem by finding the last request, and sending the data
with that request.
PR: 7165
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basically a straight port of the 1.3 module to 2.0. The MPMs need to be
modified a bit to work with mod_status, but prefork, mpmt_pthread, and
dexter have already been changed. I will fix perchild tonight. There
is a lot of common code that can be abstracted, and there seems to be a
small bug with regard to what mpmt_pthread and dexter report as current
connections. ExtendedStatus does work again, although until the bug
mentioned above is fixed, it isn't as useful on mpmt_pthread and dexter.
Next week, I will look at allowing other modules to add data to the
STATUS page and possibly to the scoreboard itself.
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or absense of a file. finfo.filetype is defined as 0 if APR_NOFILE,
or a non-zero value if the file could be apr_stat()'ed.
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"-999999" where that is past the end of the file, we should return
a PARTIAL CONTENT status code, and return the whole file as one big
byterange. This matches the 1.3 handling now. [Ryan Bloom]
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handlers will send their data down the filter stack, but 1.3 handlers will
just return, giving us a Content-Length of 0. Since we can't send a C-L
of 0 just because it is a HEAD request, we search the headers_out table
for a 0 C-L if it is a HEAD request. The problem is that some filters
will not allow (includes_filter) a C-L to be computed, so we end up without
a C-L header in headers_out. Thus, when we do a strcmp against the header
value and "0", we seg fault, because the header value is NULL.
To fix this, we grab the element from the header table, and make sure it
isn't NULL before doing the strcmp.
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instead of using ap_bucket_read. It also lets ap_die handle the fact that
the filter returned the error.
Submitted by: Greg Stein
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by sending a brigade where the first bucket is an error_bucket.
This bucket is a simple bucket that stores an HTTP error and
a string. Currently the string is not used, but it may be needed
to output an error log. The http_header_filter will find this
bucket, and output the error text, and then return
AP_FILTER_ERROR, which informs the server that the error web page
has already been sent.
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bug where we were using the byterange filter to filter an error, which
caused us to close the connection before we had sent any data. Currently,
we only keep the three most important filters, but we may need to add more
in the future. I am mostly thinking of the charset translation filter.
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it also has to happen after ap_basic_http_header. Otherwise, we don't
set r->connection->keepalive correctly, and it can be -1 for requests that
don't support keepalive. This moves ap_basic_http_header to above the
call to set_keepalive (after reversing the previous patch), which should
be perfectly safe, while still fixing the original bug.
Submitted by: Greg Stein
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function decl's and CORE_PRIVATE header info should all move into this
header.
Start with moving the filter function declarations.
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