CGI::FormBuilder->field has behaviour similar to the CGI.pm misfeature
we avoided in f4ec7b0. Force it into scalar context where it is used
in an argument list.
This prevents two (relatively minor) commit metadata forgery
vulnerabilities:
* In the comments plugin, an attacker who was able to post a comment
could give it a user-specified author and author-URL even if the wiki
configuration did not allow for that, by crafting multiple values
to other fields.
* In the editpage plugin, an attacker who was able to edit a page
could potentially forge commit authorship by crafting multiple values
for the rcsinfo field.
The remaining plugins changed in this commit appear to have been
protected by use of explicit scalar prototypes for the called functions,
but have been changed anyway to make them more obviously correct.
In particular, checkpassword() in passwordauth has a known prototype,
so an attacker cannot trick it into treating multiple values of the
name field as being the username, password and field to check for.
OVE-20161226-0001
Now I'm going to get bug reports about wanting the URLs to be
protocol-relative, but we can't win there as long as we generate RSS,
because RSS doesn't have well-defined semantics for relative URLs
(and the W3C's validator complains about them). If absolute URLs are
a problem for you, please use Atom feeds.
This was needed due to emailauth, but I've also wrapped all IP address
exposure in cloak(), although the function doesn't yet cloak IP addresses.
(One IP address I didn't cloak is the one that appears on the password
reset email template. That is expected to be the user's own IP address,
so ok to show it to them.)
Thanks to smcv for the pointer to
http://xmlns.com/foaf/spec/#term_mbox_sha1sum
This makes the email not be displayed on the wiki, so spammers won't find
it there.
Note that the full email address is still put into the comment template.
The email is also used as the username of the git commit message
(when posting comments or page edits). May want to revisit this later.
The intention was that signed-in users (for instance via httpauth,
passwordauth or openid) are already adequately identified, but
there's nothing to indicate who an anonymous commenter is unless
their IP address is recorded.
I want to write my blog posts in a convenient format (Emacs org mode)
but do not want commenters to be able to use this format for security
reasons. This patch allows to configure which formats are allowed for
writing comments.
Effectively, it restricts the formats enabled with add_plugin to those
mentioned in comments_allowformats. If this is empty, all formats are
allowed, which is the behavior without this patch.
Previously, prune("wiki/srcdir/sandbox/test.mdwn") could delete srcdir
or even wiki, if they happened to be empty. This is rarely what you
want: there's usually some base directory (destdir, srcdir, transientdir
or another subdirectory of wikistatedir) beyond which you do not want to
delete.
Technically, when the user does this, a passwordless account is created
for them. The notify mails include a login url, and once logged in that
way, the user can enter a password to get a regular account (although
one with an annoying username).
This all requires the passwordauth plugin is enabled. A future enhancement
could be to split the passwordless user concept out into a separate plugin.
strftime is a C function, it does not return decoded utf8.
Several places in ikiwiki manually decoded it, but at least two
forgot to.
Also, strftime might not return even encoded utf8, if LC_TIME is set
to a non-utf8 value. Went ahead and supported decoding whatever encoding
it uses.
The remaining direct calls to strftime() are all ones that first set
LC_TIME=C, in order to get times that are not for human display.
There is a tension between looking up the avatar at post time
and build time. I have not yet decided which is better.
Lookup at build time has the benefit that if a user changes their
email address, or sets up their own federated libravatar
server, on rebuild their new avatar will show up.
It also allows getting a https version of the avatar easily if
the site was using http but was changed to use https.
And it can look up avatars for posts that have already been made.
Which is a nice thing, especially as we roll this out, eh?
But it has a drawback, that it depends on the sessiondb contents
for emails and so rebuilding a site w/o that will lose info.
And, it means dns lookups every time a comment is rendered. A page
with a lot of comments on it would render them all whenever another is
posted or the page is changed, and that could significantly slow things
down. (This could be amelorated by caching the lookups.)
Since I'm undecided, I have moved it into a function that could be called
either way. Currently looking up only at post time.
Don't fail if libravatar fails for some reason. Reasons I can think
of:
* too old version to do openid lookups (fall back to email lookup)
* network problem perhaps
cgitemplate is a modified misctemplate that takes an optional cgi object
and uses it to set the baseurl, and also optionally the forcebaseurl,
if a page is provided.
If no cgi object is provided, it will fall back to using $config{url}.
I expect this will only be needed in exceptional cases where
that doesn't much matter, such as cgierror().
showform uses cgitemplate, so there is no more need for showform_preview.
This way, do=goto will go to the page relative to
the current location, while the permalinks in feeds
will be absolute (unless an url is not configured at all).
Now that page.tmpl is used for cgi, the parentlinks are able to be
displayed even when creating or editing a page. So it's redundant to
include the path to the page in the title, remove it.
Simon McVittie
Amitai Schlair
Joey Hess
Joey Hess
Michal Sojka
Francois Marier