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authorKarl Berry <karl@freefriends.org>2009-07-22 23:38:33 +0000
committerKarl Berry <karl@freefriends.org>2009-07-22 23:38:33 +0000
commitecf2098d020b68cab6c616cbfb1db074294a7617 (patch)
tree5a274642e1e1b90e80dd5cbc21e6437ed84bfd7f /Master/texmf-dist/scripts/pdfcrop
parent53be938673b1df4c4007eeafebbd8b23bf97ac59 (diff)
pdfcrop 1.18 (including rpdfcrop)
git-svn-id: svn://tug.org/texlive/trunk@14387 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/scripts/pdfcrop')
-rwxr-xr-xMaster/texmf-dist/scripts/pdfcrop/pdfcrop.pl104
1 files changed, 98 insertions, 6 deletions
diff --git a/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl b/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl
index 412e979ac50..9dbcdb22d90 100755
--- a/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl
+++ b/Master/texmf-dist/scripts/pdfcrop/pdfcrop.pl
@@ -22,8 +22,8 @@ $^W=1; # turn warning on
#
my $file = "pdfcrop.pl";
my $program = uc($&) if $file =~ /^\w+/;
-my $version = "1.15";
-my $date = "2009/07/14";
+my $version = "1.18";
+my $date = "2009/07/18";
my $author = "Heiko Oberdiek";
my $copyright = "Copyright (c) 2002-2009 by $author.";
#
@@ -52,6 +52,15 @@ my $copyright = "Copyright (c) 2002-2009 by $author.";
# 2008/09/12 v1.14: Error detection for invalid Bounding Boxes.
# 2009/07/14 v1.15: Fix for negative coordinates in Bounding Boxes
# (David Menestrina).
+# 2009/07/16 v1.16: Security fixes:
+# * -dSAFER added for Ghostscript,
+# * -no-shell-escape added for pdfTeX/XeTeX.
+# 2009/07/17 v1.17: Security fixes:
+# * Backticks and whitespace are forbidden
+# for options --(gs|pdftex|xetex)cmd.
+# * Validation of options --papersize and --resolution.
+# 2009/07/18 v1.18: * Restricted mode added.
+# * Option --version added.
### program identification
my $title = "$program $version, $date - $copyright\n";
@@ -74,6 +83,12 @@ my $Win = 0;
$Win = 1 if $^O =~ /mswin32/i;
$Win = 1 if $^O =~ /cygwin/i;
+# restricted mode
+my $restricted = 0;
+if ($0 =~ /rpdfcrop/ or $0 =~ /restricted/) {
+ $restricted = 1;
+}
+
# "null" device
use File::Spec::Functions qw(devnull);
my $null = devnull();
@@ -83,8 +98,26 @@ my $inputfile = "";
my $outputfile = "";
my $tmp = "tmp-\L$program\E-$$";
+### paper sizes
+
+my @papersizes = qw[
+ 11x17 ledger legal letter lettersmall
+ archE archD archC archB archA
+ a0 a1 a2 a3 a4 a4small a5 a6 a7 a8 a9 a10
+ isob0 isob1 isob2 isob3 isob4 isob5 isob6
+ c0 c1 c2 c3 c4 c5 c6
+ jisb0 jisb1 jisb2 jisb3 jisb4 jisb5 jisb6
+ b0 b1 b2 b3 b4 b5
+ flsa flse halfletter
+];
+my %papersizes;
+foreach (@papersizes) {
+ $papersizes{$_} = 1;
+}
+
### option variables
my @bool = ("false", "true");
+$::opt_version = 0;
$::opt_help = 0;
$::opt_debug = 0;
$::opt_verbose = 0;
@@ -104,6 +137,7 @@ ${title}Syntax: \L$program\E [options] <input[.pdf]> [output file]
Function: Margins are calculated and removed for each page in the file.
Options: (defaults:)
--help print usage
+ --version print version number
--(no)verbose verbose printing ($bool[$::opt_verbose])
--(no)debug debug informations ($bool[$::opt_debug])
--gscmd <name> call of ghostscript ($::opt_gscmd)
@@ -119,6 +153,7 @@ Options: (defaults:)
--(no)hires using `%%HiResBoundingBox' ($bool[$::opt_hires])
instead of `%%BoundingBox'
Expert options:
+ --restricted turn on restricted mode ($bool[$restricted])
--papersize <foo> parameter for gs's -sPAPERSIZE=<foo>,
use only with older gs versions <7.32 ($::opt_papersize)
--resolution <xres>x<yres> ()
@@ -140,6 +175,7 @@ my @OrgArgv = @ARGV;
use Getopt::Long;
GetOptions(
"help!",
+ "version!",
"debug!",
"verbose!",
"gscmd=s",
@@ -153,9 +189,15 @@ GetOptions(
"papersize=s",
"resolution=s",
"bbox=s",
+ "restricted" => sub { $restricted = 1; },
) or die $usage;
!$::opt_help or die $usage;
+if ($::opt_version) {
+ print "$version\n";
+ exit(0);
+}
+
$::opt_verbose = 1 if $::opt_debug;
@ARGV >= 1 or die $usage;
@@ -227,6 +269,55 @@ else {
}
print "* Margins: $llx $lly $urx $ury\n" if $::opt_debug;
+### papersize validation (security)
+if ($::opt_papersize ne '') {
+ $::opt_papersize =~ /^[0-9A-Za-z]+$/
+ or die "$Error Invalid papersize ($::opt_papersize)!\n";
+ $papersizes{$::opt_papersize}
+ or die "$Error Unknown papersize ($::opt_papersize),"
+ . " see ghostscript's documentation for option `-r'!\n";
+}
+
+### resolution validation (security)
+if ($::opt_resolution ne '') {
+ $::opt_resolution =~ /^\d+(x\d+)?$/
+ or die "$Error Invalid resolution ($::opt_resolution),"
+ . " see ghostscript's documentation!\n";
+}
+
+### command name validation (security)
+my %cmd = (
+ 'gscmd' => \$::opt_gscmd,
+ 'pdftexcmd' => \$::opt_pdftexcmd,
+ 'xetexcmd' => \$::opt_xetexcmd
+);
+foreach my $cmd (keys %cmd) {
+ my $val = ${$cmd{$cmd}};
+ next unless $val;
+ $val =~ s/^\s+//;
+ $val =~ s/\s+$//;
+ next unless $val;
+ if ($val =~ /`/) {
+ die "$Error Forbidden backtick for option `--$cmd' ($val)!\n";
+ }
+ if ($val =~ /\s/) {
+ die "$Error Forbidden whitespace for option `--$cmd' ($val)!\n";
+ }
+}
+if ($restricted) {
+ if ($::opt_pdftexcmd and $::opt_pdftexcmd ne 'pdftex') {
+ die "$Error pdfTeX program name must not be changed in restricted mode!\n";
+ }
+ if ($::opt_xetexcmd and $::opt_xetexcmd ne 'xetex') {
+ die "$Error XeTeX program name must not be changed in restricted mode!\n";
+ }
+ if ($::opt_gscmd) {
+ $::opt_gscmd =~ /^(gs|mgs|gswin32c|gs386|gsos2)$/
+ or $::opt_gscmd =~ /^gs[\-_]?(\d|\d[\.-_]?\d\d)c?$/
+ or die "$Error: Invalid Ghostscript program name in restricted mode!\n";
+ }
+}
+
### cleanup system
my @unlink_files = ();
my $exit_code = 1;
@@ -393,7 +484,7 @@ if ($::opt_bbox) {
@bbox = ($1, $2, $3, $4);
}
my $page = 0;
-my $gs_pipe = "$::opt_gscmd @gsargs 2>&1";
+my $gs_pipe = "$::opt_gscmd -dSAFER @gsargs 2>&1";
$gs_pipe .= " 1>$null" unless $::opt_verbose;
$gs_pipe .= "|";
@@ -454,11 +545,11 @@ END_WARNING
close(GS);
if ($? & 127) {
- die sprintf "!!! Error: Ghostscript died with signal %d!\n",
+ die sprintf "$Error Ghostscript died with signal %d!\n",
($? & 127);
}
elsif ($? != 0) {
- die sprintf "!!! Error: Ghostscript exited with error code %d!\n",
+ die sprintf "$Error Ghostscript exited with error code %d!\n",
$? >> 8;
}
@@ -466,7 +557,7 @@ print TMP "\\csname \@\@end\\endcsname\n\\end\n";
close(TMP);
if ($page == 0) {
- die "!!! Error: Ghostscript does not report bounding boxes!\n";
+ die "$Error Ghostscript does not report bounding boxes!\n";
}
### Run pdfTeX/XeTeX
@@ -482,6 +573,7 @@ else {
$cmd = $::opt_xetexcmd;
$texname = 'XeTeX';
}
+$cmd .= ' -no-shell-escape';
if ($::opt_verbose) {
$cmd .= " -interaction=nonstopmode $tmp";
}