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55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
import shutil
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from PIL import GifImagePlugin, Image, JpegImagePlugin
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from .helper import (
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PillowTestCase,
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cjpeg_available,
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djpeg_available,
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is_win32,
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netpbm_available,
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unittest,
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)
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TEST_JPG = "Tests/images/hopper.jpg"
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TEST_GIF = "Tests/images/hopper.gif"
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test_filenames = ("temp_';", 'temp_";', "temp_'\"|", "temp_'\"||", "temp_'\"&&")
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@unittest.skipIf(is_win32(), "requires Unix or macOS")
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class TestShellInjection(PillowTestCase):
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def assert_save_filename_check(self, src_img, save_func):
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for filename in test_filenames:
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dest_file = self.tempfile(filename)
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save_func(src_img, 0, dest_file)
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# If file can't be opened, shell injection probably occurred
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with Image.open(dest_file) as im:
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im.load()
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@unittest.skipUnless(djpeg_available(), "djpeg not available")
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def test_load_djpeg_filename(self):
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for filename in test_filenames:
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src_file = self.tempfile(filename)
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shutil.copy(TEST_JPG, src_file)
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with Image.open(src_file) as im:
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im.load_djpeg()
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@unittest.skipUnless(cjpeg_available(), "cjpeg not available")
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def test_save_cjpeg_filename(self):
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with Image.open(TEST_JPG) as im:
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self.assert_save_filename_check(im, JpegImagePlugin._save_cjpeg)
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@unittest.skipUnless(netpbm_available(), "netpbm not available")
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def test_save_netpbm_filename_bmp_mode(self):
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with Image.open(TEST_GIF) as im:
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im = im.convert("RGB")
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self.assert_save_filename_check(im, GifImagePlugin._save_netpbm)
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@unittest.skipUnless(netpbm_available(), "netpbm not available")
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def test_save_netpbm_filename_l_mode(self):
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with Image.open(TEST_GIF) as im:
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im = im.convert("L")
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self.assert_save_filename_check(im, GifImagePlugin._save_netpbm)
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