Python exceptions.SuspiciousFileOperation方法代码示例

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_template_sources(self, template_name):
        """
        Return an Origin object pointing to an absolute path in each directory
        in template_dirs. For security reasons, if a path doesn't lie inside
        one of the template_dirs it is excluded from the result set.
        """
        for template_dir in self.get_dirs():
            try:
                name = safe_join(template_dir, template_name)
            except SuspiciousFileOperation:
                # The joined path was located outside of this template_dir
                # (it might be inside another one, so this isn't fatal).
                continue

            yield Origin(
                name=name,
                template_name=template_name,
                loader=self,
            ) 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_available_name(self, bucket, key, max_length=32, force_name_change=False):
        file_root, file_ext = os.path.splitext(key)
        while (
            force_name_change
            or self.key_exists(bucket, key)
            or (max_length and len(key) > max_length)
        ):
            force_name_change = False
            # file_ext includes the dot.
            key = "%s_%s%s" % (file_root, get_random_string(7), file_ext)
            if max_length is None:
                continue
            # Truncate file_root if max_length exceeded.
            truncation = len(key) - max_length
            if truncation > 0:
                file_root = file_root[:-truncation]
                # Entire file_root was truncated in attempt to find an available filename.
                if not file_root:
                    raise SuspiciousFileOperation(
                        'Storage can not find an available filename for "%s". '
                        "Please make sure that the corresponding file field "
                        'allows sufficient "max_length".' % key
                    )
                key = "%s_%s%s" % (file_root, get_random_string(7), file_ext)
        return key 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_template_sources(self, template_name, template_dirs=None):
        """
        Return an Origin object pointing to an absolute path in each directory
        in template_dirs. For security reasons, if a path doesn't lie inside
        one of the template_dirs it is excluded from the result set.
        """
        if not template_dirs:
            template_dirs = self.get_dirs()
        for template_dir in template_dirs:
            try:
                name = safe_join(template_dir, template_name)
            except SuspiciousFileOperation:
                # The joined path was located outside of this template_dir
                # (it might be inside another one, so this isn't fatal).
                continue

            yield Origin(
                name=name,
                template_name=template_name,
                loader=self,
            ) 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def safe_join(base, path):
    base = force_text(base).replace("\\", "/").lstrip("/").rstrip("/") + "/"
    path = force_text(path).replace("\\", "/").lstrip("/")

    # Ugh... there must be a better way that I can't think of right now
    if base == "/":
        base = ""

    resolved_url = urlparse.urljoin(base, path)

    resolved_url = re.sub("//+", "/", resolved_url)

    if not resolved_url.startswith(base):
        raise SuspiciousFileOperation(
            'The joined path ({}) is located outside of the base path '
            'component ({})'.format(resolved_url, base))

    return resolved_url 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def test_file_truncation(self):
        # Given the max_length is limited, when multiple files get uploaded
        # under the same name, then the filename get truncated in order to fit
        # in _(7 random chars). When most of the max_length is taken by
        # dirname + extension and there are not enough  characters in the
        # filename to truncate, an exception should be raised.
        objs = [Storage() for i in range(2)]
        filename = 'filename.ext'

        for o in objs:
            o.limited_length.save(filename, ContentFile('Same Content'))
        try:
            # Testing truncation.
            names = [o.limited_length.name for o in objs]
            self.assertEqual(names[0], 'tests/%s' % filename)
            self.assertRegex(names[1], 'tests/fi_%s.ext' % FILE_SUFFIX_REGEX)

            # Testing exception is raised when filename is too short to truncate.
            filename = 'short.longext'
            objs[0].limited_length.save(filename, ContentFile('Same Content'))
            with self.assertRaisesMessage(SuspiciousFileOperation, 'Storage can not find an available filename'):
                objs[1].limited_length.save(*(filename, ContentFile('Same Content')))
        finally:
            for o in objs:
                o.delete() 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_upload_to(self, filename):
        folder_name = 'original_videos'
        filename = self.file.field.storage.get_valid_name(filename)
        max_length = self._meta.get_field('file').max_length

        # Truncate filename so it fits in the 100 character limit
        # https://code.djangoproject.com/ticket/9893
        file_path = os.path.join(folder_name, filename)
        too_long = len(file_path) - max_length
        if too_long > 0:
            head, ext = os.path.splitext(filename)
            if too_long > len(head) + 1:
                raise SuspiciousFileOperation('File name can not be shortened to a safe length')
            filename = head[:-too_long] + ext
            file_path = os.path.join(folder_name, filename)
        return os.path.join(folder_name, filename) 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_template_sources(self, template_name, template_dirs=None):
        """
        Return an Origin object pointing to an absolute path in each directory
        in template_dirs. For security reasons, if a path doesn't lie inside
        one of the template_dirs it is excluded from the result set.
        """
        if not template_dirs:
            template_dirs = get_directories_in_tethys(('templates',))
        for template_dir in template_dirs:
            try:
                name = safe_join(template_dir, template_name)
            except SuspiciousFileOperation:
                # The joined path was located outside of this template_dir
                # (it might be inside another one, so this isn't fatal).
                continue

            yield Origin(
                name=name,
                template_name=template_name,
                loader=self,
            ) 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def safe_join(base, *paths):
    """
    Joins one or more path components to the base path component intelligently.
    Returns a normalized, absolute version of the final path.

    The final path must be located inside of the base path component (otherwise
    a ValueError is raised).
    """
    base = force_text(base)
    paths = [force_text(p) for p in paths]
    final_path = abspathu(join(base, *paths))
    base_path = abspathu(base)
    # Ensure final_path starts with base_path (using normcase to ensure we
    # don't false-negative on case insensitive operating systems like Windows),
    # further, one of the following conditions must be true:
    #  a) The next character is the path separator (to prevent conditions like
    #     safe_join("/dir", "/../d"))
    #  b) The final path must be the same as the base path.
    #  c) The base path must be the most root path (meaning either "/" or "C:\\")
    if (not normcase(final_path).startswith(normcase(base_path + sep)) and
            normcase(final_path) != normcase(base_path) and
            dirname(normcase(base_path)) != normcase(base_path)):
        raise SuspiciousFileOperation(
            'The joined path ({}) is located outside of the base path '
            'component ({})'.format(final_path, base_path))
    return final_path 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_template_sources(self, template_name, template_dirs=None):
        """
        Returns the absolute paths to "template_name", when appended to each
        directory in "template_dirs". Any paths that don't lie inside one of the
        template dirs are excluded from the result set, for security reasons.
        """
        if not template_dirs:
            template_dirs = get_app_template_dirs('templates')
        for template_dir in template_dirs:
            try:
                yield safe_join(template_dir, template_name)
            except SuspiciousFileOperation:
                # The joined path was located outside of this template_dir
                # (it might be inside another one, so this isn't fatal).
                pass 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_template_sources(self, template_name, template_dirs=None):
        """
        Returns the absolute paths to "template_name", when appended to each
        directory in "template_dirs". Any paths that don't lie inside one of the
        template dirs are excluded from the result set, for security reasons.
        """
        if not template_dirs:
            template_dirs = self.engine.dirs
        for template_dir in template_dirs:
            try:
                yield safe_join(template_dir, template_name)
            except SuspiciousFileOperation:
                # The joined path was located outside of this template_dir
                # (it might be inside another one, so this isn't fatal).
                pass 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_available_name(self, name, max_length=None):
        """
        Returns a filename that's free on the target storage system, and
        available for new content to be written to.
        """
        dir_name, file_name = os.path.split(name)
        file_root, file_ext = os.path.splitext(file_name)
        # If the filename already exists, add an underscore and a random 7
        # character alphanumeric string (before the file extension, if one
        # exists) to the filename until the generated filename doesn't exist.
        # Truncate original name if required, so the new filename does not
        # exceed the max_length.
        while self.exists(name) or (max_length and len(name) > max_length):
            # file_ext includes the dot.
            name = os.path.join(dir_name, "%s_%s%s" % (file_root, get_random_string(7), file_ext))
            if max_length is None:
                continue
            # Truncate file_root if max_length exceeded.
            truncation = len(name) - max_length
            if truncation > 0:
                file_root = file_root[:-truncation]
                # Entire file_root was truncated in attempt to find an available filename.
                if not file_root:
                    raise SuspiciousFileOperation(
                        'Storage can not find an available filename for "%s". '
                        'Please make sure that the corresponding file field '
                        'allows sufficient "max_length".' % name
                    )
                name = os.path.join(dir_name, "%s_%s%s" % (file_root, get_random_string(7), file_ext))
        return name 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def safe_join(base, *paths):
    """
    Join one or more path components to the base path component intelligently.
    Return a normalized, absolute version of the final path.

    Raise ValueError if the final path isn't located inside of the base path
    component.
    """
    base = force_text(base)
    paths = [force_text(p) for p in paths]
    final_path = abspath(join(base, *paths))
    base_path = abspath(base)
    # Ensure final_path starts with base_path (using normcase to ensure we
    # don't false-negative on case insensitive operating systems like Windows),
    # further, one of the following conditions must be true:
    #  a) The next character is the path separator (to prevent conditions like
    #     safe_join("/dir", "/../d"))
    #  b) The final path must be the same as the base path.
    #  c) The base path must be the most root path (meaning either "/" or "C:\\")
    if (not normcase(final_path).startswith(normcase(base_path + sep)) and
            normcase(final_path) != normcase(base_path) and
            dirname(normcase(base_path)) != normcase(base_path)):
        raise SuspiciousFileOperation(
            'The joined path ({}) is located outside of the base path '
            'component ({})'.format(final_path, base_path))
    return final_path 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def test_should_not_allow_escaping_base_path(self):
        with pytest.raises(SuspiciousFileOperation):
            safe_join("test", "../index.html")
        with pytest.raises(SuspiciousFileOperation):
            safe_join("test", "/../index.html") 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def get_template_source(name, dirs=None):
    """Retrieves the template's source contents.

    :param name: Template's filename, as passed to the template loader.
    :param dirs: list of directories to optionally override the defaults.
    :return: tuple including file contents and file path.
    """
    loaders = []
    for loader in Engine.get_default().template_loaders:
        # The cached loader includes the actual loaders underneath
        if hasattr(loader, "loaders"):
            loaders.extend(loader.loaders)
        else:
            loaders.append(loader)

    for loader in loaders:
        for template_dir in loader.get_dirs():
            try:
                filename = safe_join(template_dir, name)
            except SuspiciousFileOperation:
                # The joined path was located outside of this template_dir
                # (it might be inside another one, so this isn't fatal).
                continue

            try:
                with open(filename, encoding=loader.engine.file_charset) as fp:
                    return fp.read()
            except FileNotFoundError:
                continue

    raise TemplateDoesNotExist(name) 

# 需要导入模块: from django.core import exceptions [as 别名]
# 或者: from django.core.exceptions import SuspiciousFileOperation [as 别名]
def test_truncates_away_filename_raises(self):
        name = 'parent/child.txt'
        with self.assertRaises(SuspiciousFileOperation):
            gaon(name, len(name) - 5)