libvips/test/test_formats.sh
John Cupitt eba9ec0dd7
Add a way to disable less well tested operations (#2636)
* quick proposal

warn on startup if untrusted operations might run

use vips_block_untrusted_set() to block untrusted operations, set an env
var or make a file to stop the warning

* mark fits, nifti and svg as untrusted

* remove the annoying "untrusted" warning message

better to warn on the download page

leave vips_block_untrusted_set() since it's obviously useful

* separate UNTRUSTED and BLOCKED

* typos

* add VIPS_BLOCK_UNTRUSTED env var

* move BLOCK_UNTRUSTED after plugin load

obviously, ooops

* add a test, disable *magick

although *magick is fuzzed, it's probably safer to disable it in
untrusted environments

* mark some more operations as untrusted
2022-04-11 11:32:32 +01:00

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#!/bin/sh
# this has now been mostly superseded by test_foreign.py ... keep this around
# as a test of the command-line interface
# set -x
set -e
. ./variables.sh
# poppler / pdfload reference image
poppler=$test_images/blankpage.pdf
poppler_ref=$test_images/blankpage.pdf.png
# giflib / gifload reference image
giflib=$test_images/trans-x.gif
giflib_ref=$test_images/trans-x.png
# the matlab image and reference image
matlab=$test_images/sample.mat
matlab_ref=$test_images/sample.png
# make a mono image
$vips extract_band $image $tmp/mono.v 1
mono=$tmp/mono.v
# make a radiance image
$vips float2rad $image $tmp/rad.v
rad=$tmp/rad.v
# make a cmyk image
$vips bandjoin "$image $tmp/mono.v" $tmp/t1.v
$vips copy $tmp/t1.v $tmp/cmyk.v --interpretation cmyk
cmyk=$tmp/cmyk.v
# save to t1.format, load as back.v
save_load() {
in=$1
format=$2
mode=$3
if ! $vips copy $in $tmp/t1.$format$mode ; then
echo "write to $out failed"
exit 1
fi
if ! $vips copy $tmp/t1.$format $tmp/back.v ; then
echo "read from $tmp/t1.format failed"
echo " (was written by $vips copy $in $tmp/t1.$format$mode)"
exit 1
fi
}
# save to the named file in tmp, convert back to vips again, subtract, look
# for max difference less than a threshold
test_format() {
in=$1
format=$2
threshold=$3
mode=$4
printf "testing $(basename $in) $format$mode ... "
save_load $in $format $mode
test_difference $in $tmp/back.v $threshold
echo "ok"
}
# as above, but hdr format
# this is a coded format, so we need to rad2float before we can test for
# differences
test_rad() {
in=$1
printf "testing $(basename $in) hdr ... "
save_load $in hdr
$vips rad2float $in $tmp/before.v
$vips rad2float $tmp/back.v $tmp/after.v
test_difference $tmp/before.v $tmp/after.v 0
echo "ok"
}
# as above, but raw format
# we can't use suffix stuff to pick the load/save
test_raw() {
in=$1
printf "testing $(basename $in) raw ... "
$vips copy $in $tmp/before.v
width=$($vipsheader -f width $tmp/before.v)
height=$($vipsheader -f height $tmp/before.v)
bands=$($vipsheader -f bands $tmp/before.v)
$vips rawsave $tmp/before.v $tmp/raw
$vips rawload $tmp/raw $tmp/after.v $width $height $bands
test_difference $tmp/before.v $tmp/after.v 0
echo "ok"
}
# a format for which we only have a load (eg. matlab)
# pass in a reference file as well and compare to that
test_loader() {
ref=$1
in=$2
format=$3
thresh=$4
printf "testing $(basename $in) $format ... "
$vips copy $ref $tmp/before.v
$vips copy $in $tmp/after.v
test_difference $tmp/before.v $tmp/after.v $thresh
echo "ok"
}
# a format for which we only have a saver (eg. dzsave)
# just run the operation and check exit status
test_saver() {
oper=$1
in=$2
suffix=$3
printf "testing $oper $(basename $in) $suffix ... "
rm -rf $tmp/savertest*
cmd="$vips $oper $in $tmp/savertest$suffix"
if ! $cmd ; then
echo "error executing:"
echo " $cmd"
exit 1
fi
echo "ok"
}
test_format $image v 0
if test_supported tiffload; then
test_format $image tif 0
test_format $image tif 90 [compression=jpeg]
test_format $image tif 0 [compression=deflate]
test_format $image tif 0 [compression=packbits]
test_format $image tif 90 [compression=jpeg,tile]
test_format $image tif 90 [compression=jpeg,tile,pyramid]
fi
if test_supported pngload; then
test_format $image png 0
test_format $image png 0 [compression=9,interlace=1]
test_format $image png 90 [palette,colours=256,Q=100,dither=0,interlace=1]
fi
if test_supported jpegload; then
test_format $image jpg 90
fi
if test_supported webpload; then
test_format $image webp 90
fi
test_format $image ppm 0
test_format $image pfm 0
if test_supported fitsload; then
test_format $image fits 0
fi
# csv can only do mono
test_format $mono csv 0
# cmyk jpg is a special path
if test_supported jpegload; then
test_format $cmyk jpg 90
fi
if test_supported tiffload; then
test_format $cmyk tif 0
test_format $cmyk tif 90 [compression=jpeg]
test_format $cmyk tif 90 [compression=jpeg,tile]
test_format $cmyk tif 90 [compression=jpeg,tile,pyramid]
fi
test_rad $rad
test_raw $mono
test_raw $image
if test_supported pdfload; then
test_loader $poppler_ref $poppler pdfload 0
fi
# don't test SVG --- the output varies too much between librsvg versions
if test_supported gifload; then
test_loader $giflib_ref $giflib gifload 0
fi
if test_supported matload; then
test_loader $matlab_ref $matlab matlab 0
fi
if test_supported dzsave; then
test_saver dzsave $image .zip
test_saver copy $image .dz
test_saver copy $image .dz[container=zip]
fi
# test blocked and untrusted
if test_supported magicksave; then
printf "testing VIPS_BLOCK_UNTRUSTED with imagemagick ... "
export VIPS_BLOCK_UNTRUSTED=1
if vips magicksave $matlab $tmp/block.png; then
echo "failed to block imagemagick"
exit 1
fi
echo "ok"
unset VIPS_BLOCK_UNTRUSTED
fi