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-rw-r--r--IkiWiki/Plugin/attachment.pm33
-rw-r--r--doc/plugins/attachment.mdwn8
2 files changed, 40 insertions, 1 deletions
diff --git a/IkiWiki/Plugin/attachment.pm b/IkiWiki/Plugin/attachment.pm
index a5c42d638..5d918c43f 100644
--- a/IkiWiki/Plugin/attachment.pm
+++ b/IkiWiki/Plugin/attachment.pm
@@ -298,6 +298,39 @@ sub match_minsize ($$;@) { #{{{
}
} #}}}
+sub match_mimetype ($$;@) { #{{{
+ shift;
+ my $wanted=shift;
+
+ my %params=@_;
+ if (! exists $params{file}) {
+ return IkiWiki::FailReason->new("no file specified");
+ }
+
+ # Use ::magic to get the mime type, the idea is to only trust
+ # data obtained by examining the actual file contents.
+ eval q{use File::MimeInfo::Magic};
+ if ($@) {
+ return IkiWiki::FailReason->new("failed to load File::MimeInfo::Magic ($@); cannot check MIME type");
+ }
+ my $mimetype=File::MimeInfo::Magic::magic($params{file});
+ if (! defined $mimetype) {
+ $mimetype="unknown";
+ }
+
+ # turn glob into a safe regexp
+ my $regexp=quotemeta($wanted);
+ $regexp=~s/\\\*/.*/g;
+ $regexp=~s/\\\?/./g;
+
+ if ($mimetype!~/^$regexp$/i) {
+ return IkiWiki::FailReason->new("file MIME type is $mimetype, not $wanted");
+ }
+ else {
+ return IkiWiki::SuccessReason->new("file MIME type is $mimetype");
+ }
+} #}}}
+
sub match_ispage ($$;@) { #{{{
my $filename=shift;
diff --git a/doc/plugins/attachment.mdwn b/doc/plugins/attachment.mdwn
index 184f5b5df..01816cd5c 100644
--- a/doc/plugins/attachment.mdwn
+++ b/doc/plugins/attachment.mdwn
@@ -29,7 +29,7 @@ For example, to limit arbitrary files to 50 kilobytes, but allow
larger mp3 files to be uploaded by joey, a test like this could be
used:
- (user(joey) and *.mp3 and maxsize(15mb)) or (!ispage() and maxsize(50kb))
+ (user(joey) and *.mp3 and mimetype(audio/mpeg) and maxsize(15mb)) or (!ispage() and maxsize(50kb))
The following additional tests are available:
@@ -62,3 +62,9 @@ The following additional tests are available:
Tests whether the attacment is being uploaded from the specified IP
address.
+
+* mimetype(foo/bar)
+
+ If the [[cpan File::MimeInfo::Magic]] perl module is installed, this
+ allows checking the mime type of the attachment. You can include a glob
+ in the type, for example `mimetype(image/*)`.