Provide means to encode redirect and rewrite backreference substitutions
%{encb64u:...} encode to base64url characters (no-padding)
%{decb64u:...} decode from base64url characters
support up to 19 regex saved matches ($1 - $9 and ${1} - ${19})
for use in replacement substitutions.
lighttpd config conditionals are still limited to 9 matches (%1 - %9)
Security: potential path traversal of a single directory above the alias
target with a specific mod_alias config where the alias which is matched
does not end in '/', but alias target filesystem path does end in '/'.
e.g. server.docroot = "/srv/www/host/HOSTNAME/docroot"
alias.url = ( "/img" => "/srv/www/hosts/HOSTNAME/images/" )
If a malicious URL "/img../" were passed, the request would be
for directory "/srv/www/hosts/HOSTNAME/images/../" which would resolve
to "/srv/www/hosts/HOSTNAME/". If mod_dirlisting were enabled, which
is not the default, this would result in listing the contents of the
directory above the alias. An attacker might also try to directly
access files anywhere under that path, which is one level above the
intended aliased path.
credit: Orange Tsai(@orange_8361) from DEVCORE
fix memleak in mod_fastcgi when FastCGI is used for both authentication
and response on the same request
(thx rschmid)
x-ref:
"Memory leak if two fcgi calls with one request (authentication and response)"
https://redmine.lighttpd.net/issues/2894
Provide means to encode redirect and rewrite backreference substitutions
In addition to $1 and %1, the following modifiers are now supported,
followed by the number for the backreference, e.g. ${esc:1}
${noesc:...} no escaping
${esc:...} escape all non-alphanumeric - . _ ~ incl double-escape %
${escape:...} escape all non-alphanumeric - . _ ~ incl double-escape %
${escnde:...} escape all non-alphanumeric - . _ ~ but no double-esc %
${tolower:...}
${toupper:...}
%{noesc:...}
%{esc:...}
%{escape:...}
%{escnde:...}
%{tolower:...}
%{toupper:...}
Provide means to substitute URI parts without needing a regex match
(and can be preceded by encoding modifier,
e.g. ${tolower:url.authority})
${url.scheme}
${url.authority}
${url.port}
${url.path}
${url.query}
${qsa} appends query string, if not empty
x-ref:
"[PATCH] mod_redirect: Add support for url-encoding backreferences, map %%n->%n, $$n->$n"
https://redmine.lighttpd.net/issues/443
"Need for URL encoding in mod_redirect and possibly mod_rewrite"
https://redmine.lighttpd.net/issues/911
handle CGI partial write of first response header
e.g. gSoap stdsoap2.c might inefficiently write "Status" to response
pipe and lighttpd might read that prior to the backend writing the
subsequent ": " which marks "Status:" as a response header.
x-ref:
https://redmine.lighttpd.net/boards/2/topics/8028
enable server.log-request-header-on-error when either
server.log-request-handling or server.log-request-header
are enabled in the global scope.
server.log-request-header-on-error is a global directive since it must
be set prior to parsing of request, and errors parsing request might
otherwise occur before lighttpd config conditions are parsed and set
(i.e. based on the parsed request headers)
x-ref:
"Log error if Host name is illegal (e.g. contains an underscore)"
https://redmine.lighttpd.net/issues/2885
server.http-parseopts = ( ... ) URL normalization options
Note: *not applied* to CONNECT method
Note: In a future release, URL normalization likely enabled by default
(normalize URL, reject control chars, remove . and .. path segments)
To prepare for this change, lighttpd.conf configurations should
explicitly select desired behavior by enabling or disabling:
server.http-parseopts = ( "url-normalize" => "enable", ... )
server.http-parseopts = ( "url-normalize" => "disable" )
x-ref:
"lighttpd ... compares URIs to patterns in the (1) url.redirect and (2) url.rewrite configuration settings before performing URL decoding, which might allow remote attackers to bypass intended access restrictions, and obtain sensitive information or possibly modify data."
https://www.cvedetails.com/cve/CVE-2008-4359/
"Rewrite/redirect rules and URL encoding"
https://redmine.lighttpd.net/issues/1720
unit tests for request processing
collect existing request processing tests from Perl tests/*.t
(test_request.c runs *much* more quickly than Perl tests/*.t)
It is not necessary to test every single value of 3 chars for confidence
in the tests. 256^256^256 is a bit overkill (and much more time
consuming than other tests)
Improve handling of Sec-WebSocket-Protocol: binary, base64 for RFC6455.
When client sends Sec-WebSocket-Protocol in request header, client
may expect Sec-WebSocket-Protocol response. mod_wstunnel is basic
tunnel endpoint and supports "binary" and "text" modes for RFC6455,
conventionally requested by client browsers as "binary" or "base64"
provide standard types in first.h instead of base.h
provide lighttpd types in base_decls.h instead of settings.h
reduce headers exposed by headers for core data structures
do not expose <pcre.h> or <stdlib.h> in headers
move stat_cache_entry to stat_cache.h
reduce use of "server.h" and "base.h" in headers
fdevent_accept_listenfd() now always returns fd O_NONBLOCK O_CLOEXEC
for consistency, rather than setting elsewhere in connection_accepted()
Handle older Linux 2.6 kernels which might have accept4() in glibc,
but return ENOSYS, as accept4() was not added until Linux kernel 2.6.28.
fix segfault in reverse url-path mapping of Set-Cookie sent from backend
when proxy.header = ( "map-urlpath" => ( ... ) ) is used and there are
multiple Set-Cookie response headers with path= attributes which need to
be reverse mapped.
(thx ganto)
x-ref:
"Segfault with proxy-header map-urlpath"
https://redmine.lighttpd.net/issues/2879
fix rare race condition from backends with server.stream-response-body=2
(thx abelbeck)
x-ref:
"fastcgi and stream-response-body=2 hangs on last chunk"
https://redmine.lighttpd.net/issues/2878
Glenn Strauss