9bbeb35c08
Fixed an issue that prevented the password reset tokens from working. Added email templates for password reset success and new account creation. Added more dynamic email template support.
618 lines
21 KiB
Python
618 lines
21 KiB
Python
import types
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import weakref
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from .lock import allocate_lock
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from .error import CDefError, VerificationError, VerificationMissing
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# type qualifiers
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Q_CONST = 0x01
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Q_RESTRICT = 0x02
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Q_VOLATILE = 0x04
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def qualify(quals, replace_with):
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if quals & Q_CONST:
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replace_with = ' const ' + replace_with.lstrip()
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if quals & Q_VOLATILE:
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replace_with = ' volatile ' + replace_with.lstrip()
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if quals & Q_RESTRICT:
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# It seems that __restrict is supported by gcc and msvc.
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# If you hit some different compiler, add a #define in
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# _cffi_include.h for it (and in its copies, documented there)
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replace_with = ' __restrict ' + replace_with.lstrip()
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return replace_with
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class BaseTypeByIdentity(object):
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is_array_type = False
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is_raw_function = False
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def get_c_name(self, replace_with='', context='a C file', quals=0):
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result = self.c_name_with_marker
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assert result.count('&') == 1
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# some logic duplication with ffi.getctype()... :-(
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replace_with = replace_with.strip()
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if replace_with:
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if replace_with.startswith('*') and '&[' in result:
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replace_with = '(%s)' % replace_with
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elif not replace_with[0] in '[(':
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replace_with = ' ' + replace_with
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replace_with = qualify(quals, replace_with)
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result = result.replace('&', replace_with)
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if '$' in result:
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raise VerificationError(
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"cannot generate '%s' in %s: unknown type name"
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% (self._get_c_name(), context))
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return result
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def _get_c_name(self):
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return self.c_name_with_marker.replace('&', '')
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def has_c_name(self):
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return '$' not in self._get_c_name()
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def is_integer_type(self):
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return False
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def get_cached_btype(self, ffi, finishlist, can_delay=False):
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try:
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BType = ffi._cached_btypes[self]
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except KeyError:
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BType = self.build_backend_type(ffi, finishlist)
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BType2 = ffi._cached_btypes.setdefault(self, BType)
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assert BType2 is BType
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return BType
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def __repr__(self):
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return '<%s>' % (self._get_c_name(),)
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def _get_items(self):
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return [(name, getattr(self, name)) for name in self._attrs_]
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class BaseType(BaseTypeByIdentity):
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def __eq__(self, other):
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return (self.__class__ == other.__class__ and
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self._get_items() == other._get_items())
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def __ne__(self, other):
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return not self == other
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def __hash__(self):
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return hash((self.__class__, tuple(self._get_items())))
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class VoidType(BaseType):
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_attrs_ = ()
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def __init__(self):
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self.c_name_with_marker = 'void&'
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def build_backend_type(self, ffi, finishlist):
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return global_cache(self, ffi, 'new_void_type')
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void_type = VoidType()
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class BasePrimitiveType(BaseType):
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def is_complex_type(self):
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return False
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class PrimitiveType(BasePrimitiveType):
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_attrs_ = ('name',)
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ALL_PRIMITIVE_TYPES = {
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'char': 'c',
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'short': 'i',
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'int': 'i',
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'long': 'i',
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'long long': 'i',
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'signed char': 'i',
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'unsigned char': 'i',
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'unsigned short': 'i',
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'unsigned int': 'i',
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'unsigned long': 'i',
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'unsigned long long': 'i',
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'float': 'f',
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'double': 'f',
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'long double': 'f',
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'_cffi_float_complex_t': 'j',
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'_cffi_double_complex_t': 'j',
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'_Bool': 'i',
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# the following types are not primitive in the C sense
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'wchar_t': 'c',
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'char16_t': 'c',
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'char32_t': 'c',
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'int8_t': 'i',
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'uint8_t': 'i',
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'int16_t': 'i',
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'uint16_t': 'i',
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'int32_t': 'i',
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'uint32_t': 'i',
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'int64_t': 'i',
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'uint64_t': 'i',
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'int_least8_t': 'i',
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'uint_least8_t': 'i',
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'int_least16_t': 'i',
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'uint_least16_t': 'i',
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'int_least32_t': 'i',
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'uint_least32_t': 'i',
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'int_least64_t': 'i',
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'uint_least64_t': 'i',
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'int_fast8_t': 'i',
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'uint_fast8_t': 'i',
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'int_fast16_t': 'i',
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'uint_fast16_t': 'i',
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'int_fast32_t': 'i',
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'uint_fast32_t': 'i',
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'int_fast64_t': 'i',
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'uint_fast64_t': 'i',
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'intptr_t': 'i',
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'uintptr_t': 'i',
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'intmax_t': 'i',
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'uintmax_t': 'i',
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'ptrdiff_t': 'i',
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'size_t': 'i',
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'ssize_t': 'i',
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}
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def __init__(self, name):
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assert name in self.ALL_PRIMITIVE_TYPES
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self.name = name
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self.c_name_with_marker = name + '&'
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def is_char_type(self):
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return self.ALL_PRIMITIVE_TYPES[self.name] == 'c'
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def is_integer_type(self):
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return self.ALL_PRIMITIVE_TYPES[self.name] == 'i'
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def is_float_type(self):
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return self.ALL_PRIMITIVE_TYPES[self.name] == 'f'
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def is_complex_type(self):
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return self.ALL_PRIMITIVE_TYPES[self.name] == 'j'
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def build_backend_type(self, ffi, finishlist):
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return global_cache(self, ffi, 'new_primitive_type', self.name)
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class UnknownIntegerType(BasePrimitiveType):
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_attrs_ = ('name',)
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def __init__(self, name):
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self.name = name
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self.c_name_with_marker = name + '&'
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def is_integer_type(self):
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return True
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def build_backend_type(self, ffi, finishlist):
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raise NotImplementedError("integer type '%s' can only be used after "
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"compilation" % self.name)
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class UnknownFloatType(BasePrimitiveType):
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_attrs_ = ('name', )
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def __init__(self, name):
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self.name = name
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self.c_name_with_marker = name + '&'
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def build_backend_type(self, ffi, finishlist):
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raise NotImplementedError("float type '%s' can only be used after "
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"compilation" % self.name)
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class BaseFunctionType(BaseType):
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_attrs_ = ('args', 'result', 'ellipsis', 'abi')
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def __init__(self, args, result, ellipsis, abi=None):
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self.args = args
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self.result = result
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self.ellipsis = ellipsis
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self.abi = abi
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#
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reprargs = [arg._get_c_name() for arg in self.args]
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if self.ellipsis:
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reprargs.append('...')
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reprargs = reprargs or ['void']
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replace_with = self._base_pattern % (', '.join(reprargs),)
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if abi is not None:
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replace_with = replace_with[:1] + abi + ' ' + replace_with[1:]
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self.c_name_with_marker = (
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self.result.c_name_with_marker.replace('&', replace_with))
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class RawFunctionType(BaseFunctionType):
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# Corresponds to a C type like 'int(int)', which is the C type of
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# a function, but not a pointer-to-function. The backend has no
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# notion of such a type; it's used temporarily by parsing.
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_base_pattern = '(&)(%s)'
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is_raw_function = True
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def build_backend_type(self, ffi, finishlist):
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raise CDefError("cannot render the type %r: it is a function "
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"type, not a pointer-to-function type" % (self,))
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def as_function_pointer(self):
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return FunctionPtrType(self.args, self.result, self.ellipsis, self.abi)
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class FunctionPtrType(BaseFunctionType):
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_base_pattern = '(*&)(%s)'
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def build_backend_type(self, ffi, finishlist):
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result = self.result.get_cached_btype(ffi, finishlist)
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args = []
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for tp in self.args:
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args.append(tp.get_cached_btype(ffi, finishlist))
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abi_args = ()
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if self.abi == "__stdcall":
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if not self.ellipsis: # __stdcall ignored for variadic funcs
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try:
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abi_args = (ffi._backend.FFI_STDCALL,)
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except AttributeError:
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pass
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return global_cache(self, ffi, 'new_function_type',
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tuple(args), result, self.ellipsis, *abi_args)
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def as_raw_function(self):
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return RawFunctionType(self.args, self.result, self.ellipsis, self.abi)
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class PointerType(BaseType):
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_attrs_ = ('totype', 'quals')
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def __init__(self, totype, quals=0):
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self.totype = totype
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self.quals = quals
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extra = " *&"
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if totype.is_array_type:
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extra = "(%s)" % (extra.lstrip(),)
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extra = qualify(quals, extra)
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self.c_name_with_marker = totype.c_name_with_marker.replace('&', extra)
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def build_backend_type(self, ffi, finishlist):
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BItem = self.totype.get_cached_btype(ffi, finishlist, can_delay=True)
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return global_cache(self, ffi, 'new_pointer_type', BItem)
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voidp_type = PointerType(void_type)
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def ConstPointerType(totype):
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return PointerType(totype, Q_CONST)
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const_voidp_type = ConstPointerType(void_type)
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class NamedPointerType(PointerType):
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_attrs_ = ('totype', 'name')
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def __init__(self, totype, name, quals=0):
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PointerType.__init__(self, totype, quals)
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self.name = name
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self.c_name_with_marker = name + '&'
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class ArrayType(BaseType):
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_attrs_ = ('item', 'length')
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is_array_type = True
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def __init__(self, item, length):
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self.item = item
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self.length = length
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#
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if length is None:
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brackets = '&[]'
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elif length == '...':
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brackets = '&[/*...*/]'
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else:
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brackets = '&[%s]' % length
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self.c_name_with_marker = (
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self.item.c_name_with_marker.replace('&', brackets))
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def length_is_unknown(self):
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return isinstance(self.length, str)
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def resolve_length(self, newlength):
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return ArrayType(self.item, newlength)
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def build_backend_type(self, ffi, finishlist):
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if self.length_is_unknown():
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raise CDefError("cannot render the type %r: unknown length" %
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(self,))
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self.item.get_cached_btype(ffi, finishlist) # force the item BType
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BPtrItem = PointerType(self.item).get_cached_btype(ffi, finishlist)
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return global_cache(self, ffi, 'new_array_type', BPtrItem, self.length)
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char_array_type = ArrayType(PrimitiveType('char'), None)
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class StructOrUnionOrEnum(BaseTypeByIdentity):
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_attrs_ = ('name',)
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forcename = None
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def build_c_name_with_marker(self):
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name = self.forcename or '%s %s' % (self.kind, self.name)
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self.c_name_with_marker = name + '&'
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def force_the_name(self, forcename):
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self.forcename = forcename
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self.build_c_name_with_marker()
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def get_official_name(self):
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assert self.c_name_with_marker.endswith('&')
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return self.c_name_with_marker[:-1]
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class StructOrUnion(StructOrUnionOrEnum):
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fixedlayout = None
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completed = 0
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partial = False
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packed = 0
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def __init__(self, name, fldnames, fldtypes, fldbitsize, fldquals=None):
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self.name = name
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self.fldnames = fldnames
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self.fldtypes = fldtypes
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self.fldbitsize = fldbitsize
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self.fldquals = fldquals
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self.build_c_name_with_marker()
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def anonymous_struct_fields(self):
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if self.fldtypes is not None:
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for name, type in zip(self.fldnames, self.fldtypes):
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if name == '' and isinstance(type, StructOrUnion):
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yield type
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def enumfields(self, expand_anonymous_struct_union=True):
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fldquals = self.fldquals
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if fldquals is None:
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fldquals = (0,) * len(self.fldnames)
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for name, type, bitsize, quals in zip(self.fldnames, self.fldtypes,
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self.fldbitsize, fldquals):
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if (name == '' and isinstance(type, StructOrUnion)
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and expand_anonymous_struct_union):
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# nested anonymous struct/union
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for result in type.enumfields():
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yield result
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else:
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yield (name, type, bitsize, quals)
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def force_flatten(self):
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# force the struct or union to have a declaration that lists
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# directly all fields returned by enumfields(), flattening
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# nested anonymous structs/unions.
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names = []
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types = []
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bitsizes = []
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fldquals = []
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for name, type, bitsize, quals in self.enumfields():
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names.append(name)
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types.append(type)
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bitsizes.append(bitsize)
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fldquals.append(quals)
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self.fldnames = tuple(names)
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self.fldtypes = tuple(types)
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self.fldbitsize = tuple(bitsizes)
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self.fldquals = tuple(fldquals)
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def get_cached_btype(self, ffi, finishlist, can_delay=False):
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BType = StructOrUnionOrEnum.get_cached_btype(self, ffi, finishlist,
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can_delay)
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if not can_delay:
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self.finish_backend_type(ffi, finishlist)
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return BType
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def finish_backend_type(self, ffi, finishlist):
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if self.completed:
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if self.completed != 2:
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raise NotImplementedError("recursive structure declaration "
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"for '%s'" % (self.name,))
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return
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BType = ffi._cached_btypes[self]
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#
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self.completed = 1
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#
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if self.fldtypes is None:
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pass # not completing it: it's an opaque struct
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#
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elif self.fixedlayout is None:
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fldtypes = [tp.get_cached_btype(ffi, finishlist)
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for tp in self.fldtypes]
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lst = list(zip(self.fldnames, fldtypes, self.fldbitsize))
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extra_flags = ()
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if self.packed:
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if self.packed == 1:
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extra_flags = (8,) # SF_PACKED
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else:
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extra_flags = (0, self.packed)
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ffi._backend.complete_struct_or_union(BType, lst, self,
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-1, -1, *extra_flags)
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#
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else:
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fldtypes = []
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fieldofs, fieldsize, totalsize, totalalignment = self.fixedlayout
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for i in range(len(self.fldnames)):
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fsize = fieldsize[i]
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ftype = self.fldtypes[i]
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#
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if isinstance(ftype, ArrayType) and ftype.length_is_unknown():
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# fix the length to match the total size
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BItemType = ftype.item.get_cached_btype(ffi, finishlist)
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nlen, nrest = divmod(fsize, ffi.sizeof(BItemType))
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if nrest != 0:
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self._verification_error(
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"field '%s.%s' has a bogus size?" % (
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self.name, self.fldnames[i] or '{}'))
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ftype = ftype.resolve_length(nlen)
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self.fldtypes = (self.fldtypes[:i] + (ftype,) +
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self.fldtypes[i+1:])
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#
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BFieldType = ftype.get_cached_btype(ffi, finishlist)
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if isinstance(ftype, ArrayType) and ftype.length is None:
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assert fsize == 0
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else:
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bitemsize = ffi.sizeof(BFieldType)
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if bitemsize != fsize:
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self._verification_error(
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"field '%s.%s' is declared as %d bytes, but is "
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"really %d bytes" % (self.name,
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self.fldnames[i] or '{}',
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bitemsize, fsize))
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fldtypes.append(BFieldType)
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#
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lst = list(zip(self.fldnames, fldtypes, self.fldbitsize, fieldofs))
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ffi._backend.complete_struct_or_union(BType, lst, self,
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totalsize, totalalignment)
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self.completed = 2
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def _verification_error(self, msg):
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raise VerificationError(msg)
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def check_not_partial(self):
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if self.partial and self.fixedlayout is None:
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raise VerificationMissing(self._get_c_name())
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def build_backend_type(self, ffi, finishlist):
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self.check_not_partial()
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finishlist.append(self)
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#
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return global_cache(self, ffi, 'new_%s_type' % self.kind,
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self.get_official_name(), key=self)
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class StructType(StructOrUnion):
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kind = 'struct'
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class UnionType(StructOrUnion):
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kind = 'union'
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class EnumType(StructOrUnionOrEnum):
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kind = 'enum'
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partial = False
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partial_resolved = False
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def __init__(self, name, enumerators, enumvalues, baseinttype=None):
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self.name = name
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self.enumerators = enumerators
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self.enumvalues = enumvalues
|
|
self.baseinttype = baseinttype
|
|
self.build_c_name_with_marker()
|
|
|
|
def force_the_name(self, forcename):
|
|
StructOrUnionOrEnum.force_the_name(self, forcename)
|
|
if self.forcename is None:
|
|
name = self.get_official_name()
|
|
self.forcename = '$' + name.replace(' ', '_')
|
|
|
|
def check_not_partial(self):
|
|
if self.partial and not self.partial_resolved:
|
|
raise VerificationMissing(self._get_c_name())
|
|
|
|
def build_backend_type(self, ffi, finishlist):
|
|
self.check_not_partial()
|
|
base_btype = self.build_baseinttype(ffi, finishlist)
|
|
return global_cache(self, ffi, 'new_enum_type',
|
|
self.get_official_name(),
|
|
self.enumerators, self.enumvalues,
|
|
base_btype, key=self)
|
|
|
|
def build_baseinttype(self, ffi, finishlist):
|
|
if self.baseinttype is not None:
|
|
return self.baseinttype.get_cached_btype(ffi, finishlist)
|
|
#
|
|
if self.enumvalues:
|
|
smallest_value = min(self.enumvalues)
|
|
largest_value = max(self.enumvalues)
|
|
else:
|
|
import warnings
|
|
try:
|
|
# XXX! The goal is to ensure that the warnings.warn()
|
|
# will not suppress the warning. We want to get it
|
|
# several times if we reach this point several times.
|
|
__warningregistry__.clear()
|
|
except NameError:
|
|
pass
|
|
warnings.warn("%r has no values explicitly defined; "
|
|
"guessing that it is equivalent to 'unsigned int'"
|
|
% self._get_c_name())
|
|
smallest_value = largest_value = 0
|
|
if smallest_value < 0: # needs a signed type
|
|
sign = 1
|
|
candidate1 = PrimitiveType("int")
|
|
candidate2 = PrimitiveType("long")
|
|
else:
|
|
sign = 0
|
|
candidate1 = PrimitiveType("unsigned int")
|
|
candidate2 = PrimitiveType("unsigned long")
|
|
btype1 = candidate1.get_cached_btype(ffi, finishlist)
|
|
btype2 = candidate2.get_cached_btype(ffi, finishlist)
|
|
size1 = ffi.sizeof(btype1)
|
|
size2 = ffi.sizeof(btype2)
|
|
if (smallest_value >= ((-1) << (8*size1-1)) and
|
|
largest_value < (1 << (8*size1-sign))):
|
|
return btype1
|
|
if (smallest_value >= ((-1) << (8*size2-1)) and
|
|
largest_value < (1 << (8*size2-sign))):
|
|
return btype2
|
|
raise CDefError("%s values don't all fit into either 'long' "
|
|
"or 'unsigned long'" % self._get_c_name())
|
|
|
|
def unknown_type(name, structname=None):
|
|
if structname is None:
|
|
structname = '$%s' % name
|
|
tp = StructType(structname, None, None, None)
|
|
tp.force_the_name(name)
|
|
tp.origin = "unknown_type"
|
|
return tp
|
|
|
|
def unknown_ptr_type(name, structname=None):
|
|
if structname is None:
|
|
structname = '$$%s' % name
|
|
tp = StructType(structname, None, None, None)
|
|
return NamedPointerType(tp, name)
|
|
|
|
|
|
global_lock = allocate_lock()
|
|
_typecache_cffi_backend = weakref.WeakValueDictionary()
|
|
|
|
def get_typecache(backend):
|
|
# returns _typecache_cffi_backend if backend is the _cffi_backend
|
|
# module, or type(backend).__typecache if backend is an instance of
|
|
# CTypesBackend (or some FakeBackend class during tests)
|
|
if isinstance(backend, types.ModuleType):
|
|
return _typecache_cffi_backend
|
|
with global_lock:
|
|
if not hasattr(type(backend), '__typecache'):
|
|
type(backend).__typecache = weakref.WeakValueDictionary()
|
|
return type(backend).__typecache
|
|
|
|
def global_cache(srctype, ffi, funcname, *args, **kwds):
|
|
key = kwds.pop('key', (funcname, args))
|
|
assert not kwds
|
|
try:
|
|
return ffi._typecache[key]
|
|
except KeyError:
|
|
pass
|
|
try:
|
|
res = getattr(ffi._backend, funcname)(*args)
|
|
except NotImplementedError as e:
|
|
raise NotImplementedError("%s: %r: %s" % (funcname, srctype, e))
|
|
# note that setdefault() on WeakValueDictionary is not atomic
|
|
# and contains a rare bug (http://bugs.python.org/issue19542);
|
|
# we have to use a lock and do it ourselves
|
|
cache = ffi._typecache
|
|
with global_lock:
|
|
res1 = cache.get(key)
|
|
if res1 is None:
|
|
cache[key] = res
|
|
return res
|
|
else:
|
|
return res1
|
|
|
|
def pointer_cache(ffi, BType):
|
|
return global_cache('?', ffi, 'new_pointer_type', BType)
|
|
|
|
def attach_exception_info(e, name):
|
|
if e.args and type(e.args[0]) is str:
|
|
e.args = ('%s: %s' % (name, e.args[0]),) + e.args[1:]
|