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Make extracting the icon files a little safer

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This commit is contained in:
Kovid Goyal 2015-08-25 12:55:10 +05:30
parent bd3882ac73
commit cdddb7528b
1 changed files with 7 additions and 2 deletions
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9
src/calibre/gui2/icon_theme.py
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@ -685,19 +685,24 @@ def remove_icon_theme():
os.remove(metadata_file)
def install_icon_theme(theme, f):
icdir = os.path.join(config_dir, 'resources', 'images')
icdir = os.path.abspath(os.path.join(config_dir, 'resources', 'images'))
if not os.path.exists(icdir):
os.makedirs(icdir)
theme['files'] = set()
metadata_file = os.path.join(icdir, 'icon-theme.json')
with ZipFile(f) as zf:
for name in zf.namelist():
if '..' in name:
continue
base = icdir
if '/' in name:
base = os.path.join(icdir, os.path.dirname(name))
if not os.path.exists(base):
os.makedirs(base)
with zf.open(name) as src, open(os.path.join(base, os.path.basename(name)), 'wb') as dest:
destpath = os.path.abspath(os.path.join(base, os.path.basename(name)))
if not destpath.startswith(icdir):
continue
with zf.open(name) as src, open(destpath, 'wb') as dest:
shutil.copyfileobj(src, dest)
theme['files'].add(name)