use keyvalue.[ch] for basic matching
consolidate PCRE logic and leverage PCRE study in keyvalue.[ch]
remove direct link to -lpcre from modules using keyvalue.[ch]
enabled by default
disable using server.feature-flags += ("server.pcre_jit" => "disable")
Available since pcre-8.20 (2011), and improved in pcre-8.32 (2012),
PCRE_STUDY_JIT_COMPILE can greatly speed up repeated execution of PCRE
patterns. (https://zherczeg.github.io/sljit/pcre.html)
lighttpd continues to use pcre_exec() instead of pcre_jit_exec(),
even though doing so does not realize all of the performance increase
potentially available with PCRE_STUDY_JIT_COMPILE and pcre_jit_exec().
pcre_jit_exec() is available with PCRE 8.32 and later, if PCRE is
compiled with --enable-jit, but lighttpd does not currently use
pcre_jit_exec() since the PCRE library might not have been compiled
with --enable-jit (though this could be solved with a weak symbol).
Similarly, lighttpd does not currently configure the pcre_jit_stack.
(Using pcre_jit_exec() may be revisited in the future.)
x-ref:
"add support for pcre JIT"
https://redmine.lighttpd.net/issues/2361
NSS crashes with SIGFPE if SSL_REQUEST_CERTIFICATE is PR_TRUE,
but trust anchors have not been set with SSL_SetTrustAnchors()
(e.g. if ssl.verifyclient.activate = "enable" but ssl.ca-file
has not been configured in lighttpd.conf)
If cert is self-issued, then do not attempt to build certificate chain.
(Attempting to build certificate chain when chain is not provided, but
ssl.ca-file is specified, is provided as backward compatible behavior
from lighttpd versions prior to lighttpd 1.4.56)
remove buffer_urldecode_query() (unused)
query string generally needs to be split on '&'
before decoding '+' and decoding %-encoding
remove int2hex() (unused, and not well-named for nibble-to-hex)
Note: monotonic time does not change while VM is suspended
Continue to use real time where required by HTTP protocol, for logging
and for other user-visible instances, such as mod_status, as well as for
external databases and caches.
save parsed listen addrs at startup for reuse at runtime
srv_socket->srv_token is normalized at startup and contains IP and port.
save offset to colon, if present, or else length of string (unix socket)
At runtime, srv_token_colon can be quickly used as length of IP string
(without port) or, if not length of string, offset of stringified port
following the colon.
avoid interfaces deprecated in openssl 3.0.0
some newer interfaces might be present in openssl 1.1.1,
but might not be present in alt TLS libs (libressl or boringssl),
so retrict use to >= openssl 3.0.0
ignore server.event-handler = "libev" if lighttpd not built with libev
(no longer an error)
On most platforms, native event handling in lighttpd is more performant
than the overhead of libev, which usually uses the same underlying
OS system interface for event notification
fix crash for (broken) nested $SERVER["socket"] config
$SERVER["socket"] belongs in the global scope and should not be
nested in any other conditional config logic. Even so, lighttpd
should not crash when such misconfiguration occurs.
x-ref:
"Lighttpd multiple SSL hosts using Server Name Indication (SNI)"
https://redmine.lighttpd.net/boards/2/topics/9612
RFC 7233 Range handling for all non-streaming responses,
including (non-streaming) dynamic responses
(previously Range responses handled only for static files)
client browsers might remember prior algorithm if algorithm changed;
send 401 Unauthorized to reset client browser
(sending 400 Bad Request was not user friendly)
cast to unsigned before << 4 to avoid (pedantic) undefined behavior
of (time_t) (which is signed integral type) on 32-bit signed time_t
The high bit gets shifted into the sign-bit, which is technically
undefined behavior in C, but is defined behavior in C++.
x-ref:
"pedantic warning from -fsanitize=undefined"
https://redmine.lighttpd.net/issues/3069
augment configure.ac msgs to remove FAM on linux and *bsd
x-ref:
"stat-cache-fam feature appears disabled since 1.4.56"
https://redmine.lighttpd.net/issues/3068
cast high uint8_t byte to uint32_t before bit shifting << 24 to avoid
(pedantic) undefined behavior of uint8_t byte with high bit set when
it is promoted to int and then bit-shifted left 24 bytes. The high bit
gets shifted into the sign-bit, which is technically undefined behavior
in C, but is defined behavior in C++.
x-ref:
"pedantic warning from -fsanitize=undefined"
https://redmine.lighttpd.net/issues/3067
