Thanks for the tip

[git.ikiwiki.info.git] / IkiWiki / Plugin / filecheck.pm

diff --git a/IkiWiki/Plugin/filecheck.pm b/IkiWiki/Plugin/filecheck.pm
index 8575ee108eece4135c783993b718cfbb1f278c2e..6e65283983b472fe26c86351fb6572ec5ae51865 100644 (file)
--- a/IkiWiki/Plugin/filecheck.pm
+++ b/IkiWiki/Plugin/filecheck.pm
@@ -5,7 +5,7 @@ use warnings;
 use strict;
 use IkiWiki 3.00;
 
-my %units=( #{{{       # size in bytes
+my %units=(            # size in bytes
        B               => 1,
        byte            => 1,
        KB              => 2 ** 10,
@@ -39,6 +39,18 @@ my %units=( #{{{     # size in bytes
        #   -- Joey
 );
 
+sub import {
+       hook(type => "getsetup", id => "filecheck",  call => \&getsetup);
+}
+
+sub getsetup () {
+       return
+               plugin => {
+                       safe => 1,
+                       rebuild => undef,
+               },
+}
+
 sub parsesize ($) {
        my $size=shift;
 
@@ -71,13 +83,13 @@ sub match_maxsize ($$;@) {
        my $page=shift;
        my $maxsize=eval{IkiWiki::Plugin::filecheck::parsesize(shift)};
        if ($@) {
-               return IkiWiki::FailReason->new("unable to parse maxsize (or number too large)");
+               return IkiWiki::ErrorReason->new("unable to parse maxsize (or number too large)");
        }
 
        my %params=@_;
-       my $file=exists $params{file} ? $params{file} : $IkiWiki::pagesources{$page};
+       my $file=exists $params{file} ? $params{file} : IkiWiki::srcfile($IkiWiki::pagesources{$page});
        if (! defined $file) {
-               return IkiWiki::FailReason->new("no file specified");
+               return IkiWiki::ErrorReason->new("file does not exist");
        }
 
        if (-s $file > $maxsize) {
@@ -92,13 +104,13 @@ sub match_minsize ($$;@) {
        my $page=shift;
        my $minsize=eval{IkiWiki::Plugin::filecheck::parsesize(shift)};
        if ($@) {
-               return IkiWiki::FailReason->new("unable to parse minsize (or number too large)");
+               return IkiWiki::ErrorReason->new("unable to parse minsize (or number too large)");
        }
 
        my %params=@_;
-       my $file=exists $params{file} ? $params{file} : $IkiWiki::pagesources{$page};
+       my $file=exists $params{file} ? $params{file} : IkiWiki::srcfile($IkiWiki::pagesources{$page});
        if (! defined $file) {
-               return IkiWiki::FailReason->new("no file specified");
+               return IkiWiki::ErrorReason->new("file does not exist");
        }
 
        if (-s $file < $minsize) {
@@ -114,27 +126,43 @@ sub match_mimetype ($$;@) {
        my $wanted=shift;
 
        my %params=@_;
-       my $file=exists $params{file} ? $params{file} : $IkiWiki::pagesources{$page};
+       my $file=exists $params{file} ? $params{file} : IkiWiki::srcfile($IkiWiki::pagesources{$page});
        if (! defined $file) {
-               return IkiWiki::FailReason->new("no file specified");
+               return IkiWiki::ErrorReason->new("file does not exist");
        }
 
-       # Use ::magic to get the mime type, the idea is to only trust
-       # data obtained by examining the actual file contents.
+       # Get the mime type.
+       #
+       # First, try File::Mimeinfo. This is fast, but doesn't recognise
+       # all files.
        eval q{use File::MimeInfo::Magic};
-       if ($@) {
-               return IkiWiki::FailReason->new("failed to load File::MimeInfo::Magic ($@); cannot check MIME type");
+       my $mimeinfo_ok=! $@;
+       my $mimetype;
+       if ($mimeinfo_ok) {
+               $mimetype=File::MimeInfo::Magic::magic($file);
+       }
+
+       # Fall back to using file, which has a more complete
+       # magic database.
+       if (! defined $mimetype) {
+               open(my $file_h, "-|", "file", "-bi", $file);
+               $mimetype=<$file_h>;
+               chomp $mimetype;
+               close $file_h;
        }
-       my $mimetype=File::MimeInfo::Magic::magic($file);
        if (! defined $mimetype) {
-               $mimetype=File::MimeInfo::Magic::default($file);
+               # Fall back to default value.
+               $mimetype=File::MimeInfo::Magic::default($file)
+                       if $mimeinfo_ok;
                if (! defined $mimetype) {
                        $mimetype="unknown";
                }
        }
+       # Ignore any parameters, we only want the type itself
+       $mimetype =~ s/;.*//;
 
        my $regexp=IkiWiki::glob2re($wanted);
-       if ($mimetype!~/^$regexp$/i) {
+       if ($mimetype!~$regexp) {
                return IkiWiki::FailReason->new("file MIME type is $mimetype, not $wanted");
        }
        else {
@@ -147,14 +175,14 @@ sub match_virusfree ($$;@) {
        my $wanted=shift;
 
        my %params=@_;
-       my $file=exists $params{file} ? $params{file} : $IkiWiki::pagesources{$page};
+       my $file=exists $params{file} ? $params{file} : IkiWiki::srcfile($IkiWiki::pagesources{$page});
        if (! defined $file) {
-               return IkiWiki::FailReason->new("no file specified");
+               return IkiWiki::ErrorReason->new("file does not exist");
        }
 
        if (! exists $IkiWiki::config{virus_checker} ||
            ! length $IkiWiki::config{virus_checker}) {
-               return IkiWiki::FailReason->new("no virus_checker configured");
+               return IkiWiki::ErrorReason->new("no virus_checker configured");
        }
 
        # The file needs to be fed into the virus checker on stdin,
@@ -162,7 +190,7 @@ sub match_virusfree ($$;@) {
        # used, clamd would fail to read it.
        eval q{use IPC::Open2};
        error($@) if $@;
-       open (IN, "<", $file) || return IkiWiki::FailReason->new("failed to read file");
+       open (IN, "<", $file) || return IkiWiki::ErrorReason->new("failed to read file");
        binmode(IN);
        my $sigpipe=0;
        $SIG{PIPE} = sub { $sigpipe=1 };