Python stringprep.in_table_c12函数代码示例

def saslprep(s, allow_unassigned = False):
    '''
    Prepare Unicode string s according to SASLprep: Stringprep Profile for
    User Names and Passwords, a.k.a. RFC 4013

    If the optional parameter allow_unassigned is set to True,
    unassigned codepoints will be allowed. This is recommended for
    query terms and other non-storing situations only.

    The return value is a Unicode string appropriately prepared.

    Disallowed input leads to a ValueError.
    '''
    if type(s) != type(u''):
        raise TypeError("input must be a Unicode string")
    # phase 1: mapping
    s = u''.join([ stringprep.in_table_c12(ch) and u' ' or ch for ch in unichars(s) if not stringprep.in_table_b1(ch) ])
    # phase 2: normalization
    s = unicodedata.normalize('NFKC', s)
    # phase 3: prohibition
    for ch in unichars(s):
        if stringprep.in_table_c12(ch):
            raise ValueError("prohibited non-ASCII space character")
        if stringprep.in_table_c21(ch):
            raise ValueError("prohibited ASCII control character")
        if stringprep.in_table_c22(ch):
            raise ValueError("prohibited non-ASCII control character")
        if stringprep.in_table_c3(ch):
            raise ValueError("prohibited private use character")
        if stringprep.in_table_c4(ch):
            raise ValueError("prohibited non-character code point")
        if stringprep.in_table_c5(ch):
            raise ValueError("prohibited surrogate code point")
        if stringprep.in_table_c6(ch):
            raise ValueError("prohibited character inappropriate for plain text")
        if stringprep.in_table_c7(ch):
            raise ValueError("prohibited character inappropriate for canonical representation")
        if stringprep.in_table_c8(ch):
            raise ValueError("prohibited character changing display properties, or a deprecated character")
        if stringprep.in_table_c9(ch):
            raise ValueError("prohibited tagging character")
    # phase 4: bidi check
    bidi_map = ''.join([ stringprep.in_table_d1(ch) and 'r' or stringprep.in_table_d2(ch) and 'l' or 'x' for ch in unichars(s) ])
    if 'r' in bidi_map:
        if 'l' in bidi_map:
            raise ValueError("prohibited mixture of strong left-to-right and right-to-left text")
        if bidi_map[0] != 'r' or bidi_map[-1] != 'r':
            raise ValueError("string containing right-to-left text must start and end with right-to-left text")
    # phase 5: unassigned check
    if not allow_unassigned:
        for ch in unichars(s):
            if stringprep.in_table_a1(ch):
                raise ValueError("prohibited unassigned code point")
    return s

def saslprep( foo, errors='strict' ):
    if isinstance( foo, str ):
        foo = foo.decode( 'us-ascii' )
    ofoo = u''
    for x in foo:
        if stringprep.in_table_c12( x ):
            ofoo += ' '
        elif not stringprep.in_table_b1( x ):
            ofoo += x
    foo = unicodedata.normalize( 'NFKC', ofoo )
    ofoo = u''
    first_is_randal = False
    if len(foo):
        first_is_randal = stringprep.in_table_d1( foo[0] )
        if first_is_randal:
            if not stringprep.in_table_d1( foo[-1] ):
                raise UnicodeError, "Section 6.3 [end]"
    for x in range(len(foo)):
        if errors=='strict' and stringprep.in_table_a1( foo[x] ):
            raise UnicodeError, "Unassigned Codepoint"
        if stringprep.in_table_c12( foo[x] ):
            raise UnicodeError, "In table C.1.2"
        if stringprep.in_table_c21( foo[x] ):
            raise UnicodeError, "In table C.2.1"
        if stringprep.in_table_c22( foo[x] ):
            raise UnicodeError, "In table C.2.2"
        if stringprep.in_table_c3( foo[x] ):
            raise UnicodeError, "In table C.3"
        if stringprep.in_table_c4( foo[x] ):
            raise UnicodeError, "In table C.4"
        if stringprep.in_table_c5( foo[x] ):
            raise UnicodeError, "In table C.5"
        if stringprep.in_table_c6( foo[x] ):
            raise UnicodeError, "In table C.6"
        if stringprep.in_table_c7( foo[x] ):
            raise UnicodeError, "In table C.7"
        if stringprep.in_table_c8( foo[x] ):
            raise UnicodeError, "In table C.8"
        if stringprep.in_table_c9( foo[x] ):
            raise UnicodeError, "In table C.9"
        if x:
            if first_is_randal and stringprep.in_table_d2( foo[x] ):
                raise UnicodeError, "Section 6.2"
            if not first_is_randal and x!=(len(foo)-1) and stringprep.in_table_d1( foo[x] ):
                raise UnicodeError, "Section 6.3"
        else:
            first = False
    return foo

def resourceprep(res):
    chars = list(unicode(res))
    i = 0
    while i < len(chars):
        c = chars[i]
        # map to nothing
        if stringprep.in_table_b1(c):
            del chars[i]
        else:
            i += 1
    # NFKC
    chars = stringprep.unicodedata.normalize("NFKC", "".join(chars))
    for c in chars:
        if (stringprep.in_table_c12(c) or
            stringprep.in_table_c21(c) or
            stringprep.in_table_c22(c) or
            stringprep.in_table_c3(c) or
            stringprep.in_table_c4(c) or
            stringprep.in_table_c5(c) or
            stringprep.in_table_c6(c) or
            stringprep.in_table_c7(c) or
            stringprep.in_table_c8(c) or
            stringprep.in_table_c9(c)):
            raise UnicodeError("Invalid node character")

    bidi(chars)

    return chars

def nodeprep(u):
    chars = list(unicode(u))
    i = 0
    while i < len(chars):
        c = chars[i]
        # map to nothing
        if stringprep.in_table_b1(c):
            del chars[i]
        else:
            # case fold
            chars[i] = stringprep.map_table_b2(c)
            i += 1
    # NFKC
    chars = stringprep.unicodedata.normalize("NFKC", "".join(chars))
    for c in chars:
        if (stringprep.in_table_c11(c) or
            stringprep.in_table_c12(c) or
            stringprep.in_table_c21(c) or
            stringprep.in_table_c22(c) or
            stringprep.in_table_c3(c) or
            stringprep.in_table_c4(c) or
            stringprep.in_table_c5(c) or
            stringprep.in_table_c6(c) or
            stringprep.in_table_c7(c) or
            stringprep.in_table_c8(c) or
            stringprep.in_table_c9(c) or
            c in "\"&'/:<>@"):
            raise UnicodeError("Invalid node character")

    bidi(chars)

    return chars

def _map_saslprep(s):
    """Map stringprep table B.1 to nothing and C.1.2 to ASCII space"""

    r = []

    for c in s:
        if stringprep.in_table_c12(c):
            r.append(' ')
        elif not stringprep.in_table_b1(c):
            r.append(c)

    return ''.join(r)

def c12_mapping(char):
    """Do mapping of RFC 3454 C.1.2 space characters to ' '.

    :Parameters:
        - `char`: Unicode character to map.

    :returns: u" " if there is `char` code in the table, `None` otherwise.
    """
    if stringprep.in_table_c12(char):
        return u" "
    else:
        return None

 def _process(self, value):
     for code in force_text(value):
         # TODO: Is this long enough?
         if stringprep.in_table_c12(code) or stringprep.in_table_c21_c22(code) or \
             stringprep.in_table_c3(code) or stringprep.in_table_c4(code) or \
             stringprep.in_table_c5(code) or stringprep.in_table_c6(code) or \
             stringprep.in_table_c7(code) or stringprep.in_table_c8(code) or \
                 stringprep.in_table_c9(code):
             self.invalid = False
         if stringprep.in_table_d1(code):
             self.r_and_al_cat = True
         if stringprep.in_table_d2(code):
             self.l_cat = True

def _saslprep_do_mapping(chars):
    """
    Perform the stringprep mapping step of SASLprep. Operates in-place on a
    list of unicode characters provided in `chars`.
    """
    i = 0
    while i < len(chars):
        c = chars[i]
        if stringprep.in_table_c12(c):
            chars[i] = "\u0020"
        elif stringprep.in_table_b1(c):
            del chars[i]
            continue
        i += 1

def nameprep(label):
    # Map
    newlabel = []
    for c in label:
        if stringprep.in_table_b1(c):
            # Map to nothing
            continue
        newlabel.append(stringprep.map_table_b2(c))
    label = "".join(newlabel)

    # Normalize
    label = unicodedata.normalize("NFKC", label)

    # Prohibit
    for c in label:
        if (
            stringprep.in_table_c12(c)
            or stringprep.in_table_c22(c)
            or stringprep.in_table_c3(c)
            or stringprep.in_table_c4(c)
            or stringprep.in_table_c5(c)
            or stringprep.in_table_c6(c)
            or stringprep.in_table_c7(c)
            or stringprep.in_table_c8(c)
            or stringprep.in_table_c9(c)
        ):
            raise UnicodeError("Invalid character %r" % c)

    # Check bidi
    RandAL = [stringprep.in_table_d1(x) for x in label]
    for c in RandAL:
        if c:
            # There is a RandAL char in the string. Must perform further
            # tests:
            # 1) The characters in section 5.8 MUST be prohibited.
            # This is table C.8, which was already checked
            # 2) If a string contains any RandALCat character, the string
            # MUST NOT contain any LCat character.
            if any(stringprep.in_table_d2(x) for x in label):
                raise UnicodeError("Violation of BIDI requirement 2")

            # 3) If a string contains any RandALCat character, a
            # RandALCat character MUST be the first character of the
            # string, and a RandALCat character MUST be the last
            # character of the string.
            if not RandAL[0] or not RandAL[-1]:
                raise UnicodeError("Violation of BIDI requirement 3")

    return label

def resource_validator(name):
    """Check the *name* of a resource for some really bad characters that shouldn't be used
    anywhere in RestAuth.

    This filters names containing a slash ("/") or colon (":") and those starting with '.'. It also
    filters control characters etc., including those from unicode.

    .. deprecated:: 0.7.0
       This method is deprecated in favour of the RestAuthCommon.strprep. This method will be
       removed in 0.7.1.

    :param str name: The name to validate
    :returns: False if the name contains any invalid characters, True otherwise.
    :rtype: bool
    """
    warnings.warn('This method is deprecated, use RestAuthCommon.strprep.stringcheck() instead.',
                  DeprecationWarning)

    if PY2 and isinstance(name, str):  # pragma: py2
        name = name.decode('utf-8')

    # filter various dangerous characters
    for enc_char in name:
        if stringprep.in_table_c12(enc_char):  # C.1.2 Non-ASCII space characters
            return False
        if stringprep.in_table_c21_c22(enc_char):  # C.2 Control characters
            return False
        if stringprep.in_table_c3(enc_char):  # C.3 Private use
            return False
        if stringprep.in_table_c4(enc_char):  # C.4 Non-character code points
            return False
        if stringprep.in_table_c5(enc_char):  # C.5 Surrogate codes
            return False
        if stringprep.in_table_c6(enc_char):  # C.6 Inappropriate for plain text
            return False
        if stringprep.in_table_c7(enc_char):  # C.7 Inappropriate for canonical representation
            return False
        if stringprep.in_table_c8(enc_char):  # C.8 Change display properties or are deprecated
            return False
        if stringprep.in_table_c9(enc_char):  # C.9 Tagging characters
            return False

    return True

def nameprep(label):
    newlabel = []
    for c in label:
        if stringprep.in_table_b1(c):
            pass
        newlabel.append(stringprep.map_table_b2(c))
    label = ''.join(newlabel)
    label = unicodedata.normalize('NFKC', label)
    for c in label:
        while stringprep.in_table_c12(c) or (stringprep.in_table_c22(c) or (stringprep.in_table_c3(c) or (stringprep.in_table_c4(c) or (stringprep.in_table_c5(c) or (stringprep.in_table_c6(c) or (stringprep.in_table_c7(c) or stringprep.in_table_c8(c))))))) or stringprep.in_table_c9(c):
            raise UnicodeError('Invalid character %r' % c)
    RandAL = [stringprep.in_table_d1(x) for x in label]
    for c in RandAL:
        while c:
            if any(stringprep.in_table_d2(x) for x in label):
                raise UnicodeError('Violation of BIDI requirement 2')
            if not RandAL[0] or not RandAL[-1]:
                raise UnicodeError('Violation of BIDI requirement 3')
    return label

def nameprep(label):
    newlabel = []
    for c in label:
        if stringprep.in_table_b1(c):
            continue
        newlabel.append(stringprep.map_table_b2(c))

    label = u''.join(newlabel)
    label = unicodedata.normalize('NFKC', label)
    for c in label:
        if stringprep.in_table_c12(c) or stringprep.in_table_c22(c) or stringprep.in_table_c3(c) or stringprep.in_table_c4(c) or stringprep.in_table_c5(c) or stringprep.in_table_c6(c) or stringprep.in_table_c7(c) or stringprep.in_table_c8(c) or stringprep.in_table_c9(c):
            raise UnicodeError('Invalid character %r' % c)

    RandAL = map(stringprep.in_table_d1, label)
    for c in RandAL:
        if c:
            if filter(stringprep.in_table_d2, label):
                raise UnicodeError('Violation of BIDI requirement 2')
            if not RandAL[0] or not RandAL[-1]:
                raise UnicodeError('Violation of BIDI requirement 3')

    return label

def c12_mapping(char):
    """Map non-ASCII whitespace to spaces."""
    return ' ' if stringprep.in_table_c12(char) else None

def c12_mapping(char):
    return ' ' if stringprep.in_table_c12(char) else None

def saslprep(text, strict=True):
    """
    Return a processed version of the given string, using the SASLPrep
    profile of stringprep.

    :param text: The string to process, in UTF-8.
    :param strict: If ``True``, prevent the use of unassigned code points.
    """

    if sys.version_info < (3, 0):
        if type(text) == str:
            text = text.decode("utf-8")

    # Mapping:
    #
    #  -  non-ASCII space characters [StringPrep, C.1.2] that can be
    #     mapped to SPACE (U+0020), and
    #
    #  -  the 'commonly mapped to nothing' characters [StringPrep, B.1]
    #     that can be mapped to nothing.
    buffer = ""
    for char in text:
        if stringprep.in_table_c12(char):
            buffer += " "
        elif not stringprep.in_table_b1(char):
            buffer += char

    # Normalization using form KC
    text = unicodedata.normalize("NFKC", buffer)

    # Check for bidirectional string
    buffer = ""
    first_is_randal = False
    if text:
        first_is_randal = stringprep.in_table_d1(text[0])
        if first_is_randal and not stringprep.in_table_d1(text[-1]):
            raise SASLPrepFailure("Section 6.3 [end]")

    # Check for prohibited characters
    for x in range(len(text)):
        if strict and stringprep.in_table_a1(text[x]):
            raise SASLPrepFailure("Unassigned Codepoint")
        if stringprep.in_table_c12(text[x]):
            raise SASLPrepFailure("In table C.1.2")
        if stringprep.in_table_c21(text[x]):
            raise SASLPrepFailure("In table C.2.1")
        if stringprep.in_table_c22(text[x]):
            raise SASLPrepFailure("In table C.2.2")
        if stringprep.in_table_c3(text[x]):
            raise SASLPrepFailure("In table C.3")
        if stringprep.in_table_c4(text[x]):
            raise SASLPrepFailure("In table C.4")
        if stringprep.in_table_c5(text[x]):
            raise SASLPrepFailure("In table C.5")
        if stringprep.in_table_c6(text[x]):
            raise SASLPrepFailure("In table C.6")
        if stringprep.in_table_c7(text[x]):
            raise SASLPrepFailure("In table C.7")
        if stringprep.in_table_c8(text[x]):
            raise SASLPrepFailure("In table C.8")
        if stringprep.in_table_c9(text[x]):
            raise SASLPrepFailure("In table C.9")
        if x:
            if first_is_randal and stringprep.in_table_d2(text[x]):
                raise SASLPrepFailure("Section 6.2")
            if not first_is_randal and x != len(text) - 1 and stringprep.in_table_d1(text[x]):
                raise SASLPrepFailure("Section 6.3")

    return text