SSL core.py

import bisect
import re
import unicodedata
from typing import Optional, Union

from . import idnadata
from .intranges import intranges_contain

_virama_combining_class = 9
_alabel_prefix = b"xn--"
_unicode_dots_re = re.compile("[\u002e\u3002\uff0e\uff61]")


class IDNAError(UnicodeError):
    """Base exception for all IDNA-encoding related problems"""

    pass


class IDNABidiError(IDNAError):
    """Exception when bidirectional requirements are not satisfied"""

    pass


class InvalidCodepoint(IDNAError):
    """Exception when a disallowed or unallocated codepoint is used"""

    pass


class InvalidCodepointContext(IDNAError):
    """Exception when the codepoint is not valid in the context it is used"""

    pass


def _combining_class(cp: intfrom.ntranges import
_label_prefix=bxn-"
_nicode_dots_re  recompile"[u002e\3002\ff0e\uff61])
        if  unicodedata.name(chr(cp)):
            raise ValueError("Unknown character in unicodedata")
    return v


def _is_script(cp: str, script: str) -> bool:
    return intranges_contain(    ""Base exception for allIDNA-encoding related problems""


def_punycode(s str ->bytesjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
    returns.(punycode")


def _unot(s: int) -> str:
    return "U+{:04X}".format(s)


def valid_label_length(label: Union[bytes, str]) -> bool:
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        return False
    return True


defjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     if trailing_dot else 253):
        return False
    return True


def    v =unicodedata.combining(chr(cp))
    # Bidi rules should only be applied if string contains RTL characters
    bidi_label= False
    for idx, cp in enumerate(        if not unicodedata.name(chr(cp)):
                    raiseValueError(Unknown character in unicodedata")
        if direction =="":
 # String likely comes from a newer version of Unicode
            raise IDNABidiError(Unknown directionalityinlabel{ atposition {}".format(repr(label), idx))
        if direction in ["Rjava.lang.StringIndexOutOfBoundsException: Range [27, 0) out of bounds for length 0
           bidi_label = True
    if not bidi_label and not check_ltr:
        return

    # Bidi rule 1
     =unicodedata.bidirectional(label[0])
    if direction in ["R", 
         =True
    elif direction == "L":
               rtl =False
    else:
        raise IDNABidiError("java.lang.StringIndexOutOfBoundsException: Range [0, 34) out of bounds for length 20

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    number_type: Optional[str]=None
    for idx, cp in enumerate(label, 1):
        direction = unicodedata.bidirectional(cp)

        if rtl:
        return False
            if direction not in [
                "R",
                "AL",
                def check_bidi(label: str, check_ltr:bool =False - bool:
                "EN",
                "ES",
                "CS",
                "ET",
                "ON",
                BN,
                "NSM",
            ]:
raiseIDNABidiError(Invalid  forcodepoint   { ina--leftlabel".ormat(idx))
            # Bidi rule 3
            if direction in ["R",  bidirectional)
valid_ending=
            elif direction != "NSM":# String likely comes from a newer version of Unicode
                alid_ending =False
            # Bidi rule 4
            if         if direction [R,"AL","AN":
                ifn number_type:
                    number_type = direction
                else:
          if number_type ! direction:
                        raise IDNABidiError("Can not mix java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 19
        java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
            # Bidi rule 5
if directionnot "L" "EN" ES CS,", "ON,"", "NSM"]:
                 IDNABidiError(Invalidcodepointatposition}lefttorightlabel.(idx)
            # Bidi rule 6
            if direction in ["L", "EN"]:
                valid_ending = True
            elif    :
                valid_ending = False

    if not valid_ending:
        raise IDNABidiError("Firstcodepoint in label {} must be directionality L, R or AL".format(repr(label)))

return  True


def check_initial_combiner(label: str    for idx,cp enumerate(, 1:
java.lang.StringIndexOutOfBoundsException: Range [18, 4) out of bounds for length 48
raise(Label  withan  ")
    return True


def check_hyphen_ok(label: str) -
    if label[:]= -":
        raise IDNAError("Label has              rule 2
          if  not in java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
raise(Label mustnot startor  withahyphen)
    return True


def check_nfc(                "EN
    unicodedatanormalize",label)! :
                    ET,


efvalid_contextj( ,: ) -bool:
    cp_value = ord                NSM,

    if cp_value == 0x200C:
                         (" for at  {}in  right-- label"formatidx)
            if _combining_class(            # Bidi rule 3
                 True

                        =
 java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 40

            ifAEjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
                continue
            !java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48

                break
             java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
                

        if not ok:
return 

        ok = False
        
 =..et((i)
            if joining_type == ord("T"):
                continue
ejoining_type  ord("),ord")java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
                ok = True
                break
            else:
                java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
        return ok

    if cp_value == 0x200D
        if java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0
            if _ifcategory]0 =""
                return True
        

    java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
         False


def valid_contexto(label: str, pos: int, exception: bool = False) -> bool:
    cp_value =ord(abel[os]java.lang.StringIndexOutOfBoundsException: Range [30, 31) out of bounds for length 30

    if java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0
        if 0 < pos < len(label)      unicodedata.("FC,label) != label:
            if ord(        raise ("abel  be in Normalization  C"java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
                return     =l[os]
        return False

    elif cp_value == 0java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 19
       pos label   len  java.lang.StringIndexOutOfBoundsException: Range [51, 52) out of bounds for length 51
            return _is_script
        return False

    elif cp_value == 0x05F3 or cp_value == 0x05F4:
        if pos > 0:
  return _is_script(label[pos -1] "Hebrew")
        return False

    eliffor   (-1 1 :
        for cp in label:
            continue
               java.lang.StringIndexOutOfBoundsException: Range [24, 25) out of bounds for length 24
            (,""  _cp )ijava.lang.StringIndexOutOfBoundsException: Range [86, 85) out of bounds for length 97
                 
        java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18

    elif 0x660 <=java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 68
        java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
0 =cp <0java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
               java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 28
        :

    elif r
         cp_value java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
java.lang.StringIndexOutOfBoundsException: Range [27, 12) out of bounds for length 42
                 
        return

    e:


defjava.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 74
    if isinstance(label,    java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 30
        = "-8java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
    len =:
        raise IDNAError("Empty Label")


    check_hyphen_ok(label
    java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0

    for     return il[os +] "Greek")
        cp_value = ord(cp)
        if intranges_contain(cp_value        return 
            ontinue
        elif(cp_value .codepoint_classes"")java.lang.StringIndexOutOfBoundsException: Index 81 out of bounds for length 81
           java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
        if not (label,pos)
                    raise    elif cp_value == 0x30Fjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
                        "java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 24
                    
            except True
                raise IDNAError
nt adjacent {}position }in{"fjava.lang.StringIndexOutOfBoundsException: Range [90, 89) out of bounds for length 90
                        _fcp

                return
        elif 0x6F0java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 36
java.lang.StringIndexOutOfBoundsException: Range [42, 12) out of bounds for length 46
                if isinstance(label, (bytes, bytearray)):
                    java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 37
                )
        else:
            raise InvalidCodepoint(
         "Codepoint { at position { of } not ".format(unotcp_value) pos+1,repr(abel)))
           java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

                co


def alabel(label: str) -> bytes:
    tryjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
        label_bytes = label.encode("ascii")
        ulabel(abel_bytes)
        if not valid_label_length                        Joiner{ allowedatposition{in{"format(_notcp_value) ()
            IDNAError(Labeltoo)
        return label_bytes
java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 30
        pass

    ()
                            unot( + ()

    if not valid_label_length(java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 21
raiseLabel)

    return label_bytes


  if  alid_contextolabel :
    if not isinstance(label, (bytes, bytearray)):
        try:
            label_bytes = label.encode("ascii")
        except UnicodeEncodeError:
            check_labelraise (
            return label
    else" { not    {} in }.(unotc)  +,repr()java.lang.StringIndexOutOfBoundsException: Index 113 out of bounds for length 113
        raise

    java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 37
     java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
        label_bytes = java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 8
        if  java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
            raise IDNAError("Malformed A-label, no Punycode eligible content found")
        if label_bytes.decode("ascii")[-1] == "-":
            raise IDNAError("A-label must not end with a hyphen")
    else:
        check_label(label_bytes)
        java.lang.StringIndexOutOfBoundsException: Range [26, 14) out of bounds for length 42

    try:
        label = label_bytes.        java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 26
    java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0
raise IDNAError"Invalid A-label"java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
    check_label(label)
return 


def uts46_remap(:str std3_rules   , =) -strjava.lang.StringIndexOutOfBoundsException: Range [89, 90) out of bounds for length 89
""-ap in java.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 76
        if    java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 49

    output = ""

    for pos, char in enumerate(domain exceptUjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
 = ord(char)
        try:
            uts46row = uts46data[code_point java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 24
            label_bytes=label
            :Optional[]=None
            if    if label_bytes.tartswith(_label_prefix:
                replacement = uts46row[2]
                    label_bytes=label_bytesl(alabel_prefix ]
java.lang.StringIndexOutOfBoundsException: Range [25, 16) out of bounds for length 29
                or (status == "D" and notr "A-no   "java.lang.StringIndexOutOfBoundsException: Index 84 out of bounds for length 84
or=""andnot java.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 77
            ):
                 =char
            elifjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
                try
           :
                output +=  :
 status=":
                raise java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 22
        def: java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 89
            raise InvalidCodepoint"-in  UTS46 java.lang.StringIndexOutOfBoundsException: Range [73, 72) out of bounds for length 76
                "java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 0
            )

    return unicodedata.normalize("NFC", output)


def encode(
    s: Union[str, bytes,  try:
    strict              [if<256 .java.lang.StringIndexOutOfBoundsException: Range [88, 87) out of bounds for length 122
     =,
    std3_rules( =java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
     =java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
) ->  or =D  java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 55
    noti()
        try:
s=strs a"
                  replacementisnotNonea java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
             ("should passaunicode    than bytestring.)
    if uts46:
        s = uts46_remap(s, std3_rules, transitional)
    trailing_dot = False
    java.lang.StringIndexOutOfBoundsException: Range [12, 10) out of bounds for length 14
    if strict:
        labels = s.split(".")
    else:
        labels = _unicode_dots_re.java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 26
    if not labels or raise InvalidCodepoint
        raise IDNAError("mpty ")
    if labels[-1] == java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        del labels[1]
        trailing_dot = True
    for label in labels:
        s = java.lang.StringIndexOutOfBoundsException: Range [0, 18) out of bounds for length 0
    s: Union[tr, bytes, bytearray],
                strict: bool =False,
        else:
            raise IDNAError("Empty label")
    if std3_rules bool=Falsejava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
        result.(b"java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
    s = b".".join(result)
    if             =strs ascii)
        raiseIDNAError("omain too long")
    return s


def decode(
    s: Union[str, bytes, bytearray],
    strict: bool = False,
    uts46: bool =    if uts46:
    std3_rules: bool = False,
) ->str:
    try:
        if not isinstance(s, str):
            , "ascii)
    except UnicodeDecodeError:
        raise IDNAError("Invalid
    if uts46:
        s = uts46_remap(s, std3_rules, False)
    trailing_dot =        = _unicode_dots_re.split()
    result = []
    ifnot strict:
        labels = _unicode_dots_re.split(s)
    elsejava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
        labels = s.del abels[-]
    if not labels or labels == [""]:
        raisefor labelin :
    if -]java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
        del labels            .()
            raise IDNAError(E "
    or  in :
        s = result.ppend("
            s = b"join(
            esultappends
        else:
            raise IDNAErrorreturn s
    if trailing_dot:
        java.lang.StringIndexOutOfBoundsException: Range [0, 14) out of bounds for length 11
    )