Security checks
---------------
-- `refreshpofiles` uses `system()`, whose args have to be checked more
- thoroughly to prevent any security issue (command injection, etc.).
- > Always pass `system()` a list of parameters to avoid the shell.
- > I've checked in a change fixing that. --[[Joey]]
-- `refreshpofiles` and `refreshpot` create new files; this may need
- some checks, e.g. using `IkiWiki::prep_writefile()`
- > Yes, it would be ideal to call `prep_writefile` on each file
- > that they write, beforehand. This way you'd avoid symlink attacks etc to the
- > generated po/pot files. I haven't done it, but it seems pretty trivial.
- > --[[Joey]]
- Can any sort of directives be put in po files that will
cause mischief (ie, include other files, run commands, crash gettext,
- whatever).
+ whatever). The [PO file
+ format](http://www.gnu.org/software/gettext/manual/gettext.html#PO-Files)
+ should contain the answer.
- Any security issues on running po4a on untrusted content?
+### Security history
+
+#### GNU gettext
+- [CVE-2004-0966](http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0966)
+ / [Debian bug #278283](http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=278283):
+ the autopoint and gettextize scripts in the GNU gettext package
+ 1.14 and later versions, as used in Trustix Secure Linux 1.5
+ through 2.1 and other operating systems, allows local users to
+ overwrite files via a symlink attack on temporary files.
+
+#### po4a
+-
+ [CVE-2007-4462](http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4462):
+ lib/Locale/Po4a/Po.pm in po4a before 0.32 allows local users to
+ overwrite arbitrary files via a symlink attack on the
+ gettextization.failed.po temporary file.
+
gettext/po4a rough corners
--------------------------
[[bugs/pagetitle_function_does_not_respect_meta_titles]], which might
be fixed by something like [[todo/using_meta_titles_for_parentlinks]].
-### backlinks
-
-`po_link_to = negotiated`: if a given translatable `sourcepage.mdwn`
-links to \[[destpage]], `sourcepage.LL.po` also link to \[[destpage]],
-and the latter has the master page *and* all its translations listed
-in the backlinks.
-
-`po_link_to = current`: seems to work nicely
-
-### parentlinks
-
-When `usedirs` is disabled and the home page is translatable, the
-parent link to the wiki home page is broken (`/index.html`).
-
Translation quality assurance
-----------------------------