Unconditionally passing arbitrary numbers as flags turns out to be a
bad idea, because some of the "unused" values have historically had
side-effects internal to libdiscount. Detect whether the known flags
work by rendering short Markdown snippets the first time we htmlize,
checking whether each known flag is both necessary and sufficient.
Signed-off-by: Simon McVittie <smcv@debian.org>
This used to work, but has been interpreted as a literal part of
the filename since ImageMagick 6.9.8-3. In newer versions, there does
not seem to be any way to indicate that a filename containing ':' is
to be taken literally without first knowing the decoder to use.
Signed-off-by: Simon McVittie <smcv@debian.org>
Remove openid provider icons from login selector, since openid providers
are increasingly not working. Verisign retired theirs, and aol and
yahoo/flickr are not commonly used for openid. Any users who still clicked
those icons to login will need to instead enter their openid url.
This commit was sponsored by andrea rota.
This also exercises the typical centralized git repository workflow,
where changes flow from a non-bare clone (for example on a laptop)
to a centralized bare repository, then from the centralized bare
repository to a non-bare clone that is ikiwiki's srcdir.
Signed-off-by: Simon McVittie <smcv@debian.org>
This still smuggles it past the sanitize step, but avoids having
other plugins that want to capture text content without markup
(notably toc) see the CSS as if it was text content.
This hopefully fixes a race condition in which the test failed
around 6% of the time.
If we don't wait, the mtime (which is rounded down to 1 second precision
in the APIs we use) will not necessarily change, so the update will not
necessarily cause the page to be refreshed.
Bug-Debian: https://bugs.debian.org/862494
Previously it was relying on running with an installed ikiwiki
and being able to copy in recentchanges.mdwn and wikiicons/ from the
underlay in /usr. The underlay in ./underlays/basewiki can't be used
(yet) because ikiwiki doesn't allow following symlinks, even from
underlays.
I'd like to make ikiwiki follow symlinks whose destinations can be
verified to be safe (for example making it willing to expose
/usr/share/javascript to the web, but not /etc/passwd), at least from
underlays, but this is security-sensitive so I'm not going to rush
into it.
Current Perl versions put '.' at the end of the library search path
@INC, although this will be fixed in a future Perl release. This means
that when software loads an optionally-present module, it will be
looked for in the current working directory before giving up. An
attacker could use this to execute arbitrary Perl code from ikiwiki's
current working directory.
Removing '.' from the library search path in Perl is the correct
fix for this vulnerability, but is not trivial to do due to
backwards-compatibility concerns. Mitigate this (even if ikiwiki is run
with a vulnerable Perl version) by explicitly removing '.' from the
search path, and instead looking for ikiwiki's own modules relative
to the absolute path of the executable when run from the source
directory.
In tests that specifically want to use the current working directory,
use "-I".getcwd instead of "-I." so we use its absolute path, which
is immune to the removal of ".".
Otherwise, if third-party plugins extend newenviron by more than
3 entries, we could overflow the array. It seems unlikely that any
third-party plugin manipulates newenviron in practice, so this
is mostly theoretical. Just in case, I have deliberately avoided
using "i" as the variable name, so that any third-party plugin
that was manipulating newenviron directly will now result in the
wrapper failing to compile.
I have not assumed that realloc(NULL, ...) works as an equivalent of
malloc(...), in case there are still operating systems where that
doesn't work.
This mitigates CVE-2016-3714. Wiki administrators who know that they
have prevented arbitrary code execution via other formats can re-enable
the other formats if desired.
If the relative link from the (page generating the) RSS to the target
would start with "./" or "../", just concatenating it with the URL to
the directory containing the RSS is not sufficient. Go via
URI::new_abs to fix this.
Simon McVittie
http://thm.id.fedoraproject.org/
Joey Hess
intrigeri
Amitai Schlair