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These functions return zeroed memory, analogous to ngx_pcalloc().
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No functional changes.
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log->filter ("if" parameter) was uninitialized when the default value
was being used, which would lead to a crash (SIGSEGV) when access_log
directive wasn't specified in the configuration.
Zero-fill the whole structure instead of zeroing fields one-by-one
in order to prevent similar issues in the future.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
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Large allocations from a slab pool result in free page blocks being fragmented,
eventually leading to a situation when no further allocation larger than a page
size are possible from the pool. While this isn't a problem for nginx itself,
it is known to be bad for various 3rd party modules. Fix is to merge adjacent
blocks of free pages in the ngx_slab_free_pages() function.
Prodded by Wandenberg Peixoto and Yichun Zhang.
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Since the type cast has precedence higher than the bit shift operator,
all values were truncated to 8 bits.
These macros are used to construct header block for SYN_REPLY frame on
platforms with strict alignment requirements. As a result, any response
that contains a header with name or value longer than 255 bytes was
corrupted on such platforms.
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Do not taste the last parameter against directory, as otherwise it would
result in the trailing slash being cut from the parameter value.
Notably, this prevents an internal redirect to an empty URI
if the parameter is set to the literal slash:
location / { try_files $uri /; }
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Previous workaround to avoid warnings on OS X due to deprecated system
OpenSSL library (introduced in a3870ea96ccd) no longer works, as
the MAC_OS_X_VERSION_MIN_REQUIRED macro is ignored on OS X 10.9
if a compiler used supports __attribute__(availability).
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In particular, properly output partial match at the end of a subrequest
response (much like we do at the end of a response), and reset/set the
last_in_chain flag as appropriate.
Reported by KAWAHARA Masashi.
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Found by Coverity (CID 1215646).
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This fixes --with-file-aio support on systems that lack eventfd()
syscall, notably aarch64 Linux.
The syscall(SYS_eventfd) may still be necessary on systems that
have eventfd() syscall in the kernel but lack it in glibc, e.g.
as seen in the current CentOS 5 release.
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Make two checks for maximum number of tries consistent.
The other one checks '>' condition.
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Missed during introduction of the SMTP pipelining support (04e43d03e153,
1.5.6). Previously, the check wasn't needed as s->buffer was used directly
and the number of arguments didn't matter.
Reported by Svyatoslav Nikolsky.
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If set, its value is output in "nginx -v" and in the error log.
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Prodded by Yichun Zhang.
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If response is gzipped we can't recode response, but in case it's not
needed we still can add charset to Content-Type.
The r->ignore_content_encoding is dropped accordingly, charset with gzip_static
now properly works without any special flags.
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The ngx_http_map_uri_to_path() function used clcf->regex to detect if
it's working within a location given by a regular expression and have
to replace full URI with alias (instead of a part matching the location
prefix). This is incorrect due to clcf->regex being false in implicit
locations created by if and limit_except.
Fix is to preserve relevant information in clcf->alias instead, by setting
it to NGX_MAX_SIZE_T_VALUE if an alias was specified in a regex location.
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This change is similar to d2ac5cf4056d. Special flag of completeness looks
surplus when there is also a counter of frame bytes left.
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Handling of PROXY protocol for SPDY connection is currently implemented as
a SPDY state. And while nginx waiting for PROXY protocol data it continues
to process SPDY connection: initializes zlib context, sends control frames.
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- Specification-friendly handling of invalid header block or special headers.
Such errors are not fatal for session and shouldn't lead to connection close;
- Avoid mix of NGX_HTTP_PARSE_INVALID_REQUEST/NGX_HTTP_PARSE_INVALID_HEADER.
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Now cases when decompression failed due to internal error
and when a client sent corrupted data are distinguished.
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The function just calls ngx_http_spdy_state_headers_skip() most of the time.
There was also an attempt of optimization to stop parsing if the client already
closed connection, but it looks strange and unfinished anyway.
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Previously, the frame wasn't sent anyway (and had a wrong status code).
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Now ngx_http_spdy_state_protocol_error() is able to close stream,
so there is no need in a separate call for this.
Also fixed zero status code in logs for some cases.
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Now ngx_http_spdy_construct_request_line() doesn't try to finalize request
in case of failed memory allocation.
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The 7022564a9e0e changeset made ineffective workaround from 2464ccebdb52
to avoid NULL pointer dereference with "if". It is now restored by
moving the u->ssl_name initialization after the check.
Found by Coverity (CID 1210408).
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Previous code failed to properly restore cf->conf_file in case of
ngx_close_file() errors, potentially resulting in double free of
cf->conf_file->buffer->start.
Found by Coverity (CID 1087507).
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Found by Coverity (CID 1087509).
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While managing big caches it is possible that expiring old cache items
in ngx_http_file_cache_expire() will take a while. Added a check for
ngx_quit / ngx_terminate to make sure cache manager can be terminated
while in ngx_http_file_cache_expire().
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The ngx_http_proxy_rewrite_cookie() function expects the value of the
"Set-Cookie" header to be null-terminated, and for headers obtained
from proxied server it is usually true.
Now the ngx_http_proxy_rewrite() function preserves the null character
while rewriting headers.
This fixes accessing memory outside of rewritten value if both the
"proxy_cookie_path" and "proxy_cookie_domain" directives are used in
the same location.
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X509_check_host() can't handle non null-terminated names with zero length,
so make sure to fail before calling it.
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There's a race condition between closing a stream by one endpoint
and sending a WINDOW_UPDATE frame by another. So it would be better
to just skip such frames for unknown streams, like is already done
for the DATA frames.
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