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authorManuel Pégourié-Gonnard <mpg@elzevir.fr>2010-02-23 00:00:59 +0000
committerManuel Pégourié-Gonnard <mpg@elzevir.fr>2010-02-23 00:00:59 +0000
commit05be7ef176f89f31ca8c0af45ecf67e3f08c12de (patch)
treeb9639b680ded0b1831017820b90c4d14b9e0bc2c /Build/source/extra/epstopdf
parent627a27df1a7b380f9aeec1a1ef8eb8ff3d7319d3 (diff)
epstopdf: Use new kpsewhich option to validate filenames.
git-svn-id: svn://tug.org/texlive/trunk@17151 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/extra/epstopdf')
-rwxr-xr-xBuild/source/extra/epstopdf/epstopdf.pl46
1 files changed, 21 insertions, 25 deletions
diff --git a/Build/source/extra/epstopdf/epstopdf.pl b/Build/source/extra/epstopdf/epstopdf.pl
index 03ac89663bd..25ab5ce043e 100755
--- a/Build/source/extra/epstopdf/epstopdf.pl
+++ b/Build/source/extra/epstopdf/epstopdf.pl
@@ -245,6 +245,19 @@ sub errorUsage {
$restricted = 1 if $::opt_restricted;
debug "Restricted mode activated" if $restricted;
+### check if a name is "safe" according to kpse's open(in|out)_any
+# return true if name is ok, false otherwise
+sub safe_name {
+ my ($mode, $name) = @_;
+ my $option;
+ $option = '-safe-in-name' if $mode eq 'in';
+ $option = '-safe-out-name' if $mode eq 'out';
+ error "Unkown check mode '$mode' in safe_name()." unless $option;
+ my @arg = ('kpsewhich', '-progname', 'repstopdf', $option, $name);
+ my $bad = system {$arg[0]} @arg;
+ return not $bad;
+}
+
### help, version options.
if ($::opt_help) {
print $usage;
@@ -257,7 +270,7 @@ if ($::opt_version) {
exit (0);
}
-### get input filename
+### get input filename (\ref{openin_any} for validation)
my $InputFilename = "";
if ($::opt_filter) {
@ARGV == 0 or
@@ -331,31 +344,14 @@ $BBName = "%%HiResBoundingBox:" if $::opt_hires;
$BBName = "%%ExactBoundingBox:" if $::opt_exact;
debug "BoundingBox comment:", $BBName;
+### validate input file name in restricted mode \label{openin_any}
+if ($restricted and not $::opt_filter and not safe_name('in', $InputFilename)) {
+ error "Input filename '$InputFilename' not allowed in restricted mode.";
+}
+
### validate output file name in restricted mode \label{openout_any}
-use File::Spec::Functions qw(splitpath file_name_is_absolute);
-if ($restricted) {
- # use the equivalent of openout_any = p
- # (see opennameok() web2c/lib/texmfmp.c)
- # Well, for now, be even more paranoid: don't allow absolute path at all
- my $ok = 1;
- # disallow opening dot-files on Unix
- unless ($^O eq "MSWin32") {
- my ($drive, $path, $basename) = splitpath($OutputFilename);
- $ok = 0 if $basename =~ /^\./;
- }
- # disallow absolute path
- $ok = 0 if file_name_is_absolute($OutputFilename);
- # disallow colon on Windows. It could be used either after a drive
- # (like "a:dir\file") or for an alternate data stream (like
- # "file:ads").
- if ($^O eq "MSWin32" || $^O eq "cygwin") {
- $ok = 0 if $OutputFilename =~ /:/;
- }
- # disallow going to parent directory
- my $ds = ($^O eq "MSWin32" || $^O eq "cygwin") ? qr([\\/]) : qr(/);
- $ok = 0 if $OutputFilename =~ /^\.\.$ds|$ds\.\.$ds/;
- # we passed all tests
- error "Output filename '$OutputFilename' not allowed in restricted mode." unless $ok;
+if ($restricted and not safe_name('out', $OutputFilename)) {
+ error "Output filename '$OutputFilename' not allowed in restricted mode.";
}
### option gs