o 'h\@sdZddlZddlZddlmZmZmZmZddlZ ddl Z ddl Z hdZ dhZ dZdZdZdZd Zd Zd ZGd d d e jjZGdddZGdddZdS)zTokenize DNS zone file formatN)AnyListOptionalTuple>   "();r c@seZdZdZdS)UngetBufferFullzDAn attempt was made to unget a token when the unget buffer was full.N)__name__ __module__ __qualname____doc__rrI/var/www/html/olx_land/venv/lib/python3.10/site-packages/dns/tokenizer.pyr(src @seZdZdZ   d&dedededeefd d Z d efd d Z d efddZ d efddZ d efddZ d efddZd efddZd efddZd efddZddZddZd d!Zd'd"d#Zd'd$d%ZdS)(TokenzA DNS zone file format token. ttype: The token type value: The token value has_escape: Does the token value contain escapes? FNttypevalue has_escapecommentcCs||_||_||_||_dS)zInitialize a token instance.N)rrrr)selfrrrrrrr__init__4s  zToken.__init__returncC |jtkSN)rEOFr rrris_eofB z Token.is_eofcCr#r$)rEOLr&rrris_eolEr(z Token.is_eolcCr#r$)r WHITESPACEr&rrr is_whitespaceHr(zToken.is_whitespacecCr#r$)r IDENTIFIERr&rrr is_identifierKr(zToken.is_identifiercCr#r$)r QUOTED_STRINGr&rrris_quoted_stringNr(zToken.is_quoted_stringcCr#r$)rCOMMENTr&rrr is_commentQr(zToken.is_commentcCr#r$)r DELIMITERr&rrr is_delimiterTr(zToken.is_delimitercCs|jtkp |jtkSr$)rr)r%r&rrr is_eol_or_eofWszToken.is_eol_or_eofcCs&t|tsdS|j|jko|j|jkS)NF isinstancerrrr otherrrr__eq__Z z Token.__eq__cCs&t|tsdS|j|jkp|j|jkS)NTr6r8rrr__ne___r;z Token.__ne__cCsd|j|jfS)Nz%d "%s")rrr&rrr__str__dsz Token.__str__cCs|js|Sd}t|j}d}||kr|j|}|d7}|dkr~||kr'tjj|j|}|d7}|r~||kr       zToken.unescapecCs*d}t|j}d}||kr|j|}|d7}|dkr||kr"tjj|j|}|d7}|r|||kr7tjj|j|}|d7}||krHtjj|j|}|d7}|rY|s]tjjt|dt|dt|}|dkrutjj|d|7}n ||7}n||7}||ks t |j t |S) Nrr r>r?r@rAs%c) rBrrCrDrErFrGrHencoderrbytesrJrrrunescape_to_bytess<        zToken.unescape_to_bytes)rFN)r"r)rrrrrHrboolrstrr!r'r*r,r.r0r2r4r5r:r<r=rRrVrrrrr,s6    rc @s eZdZdZejddfdedeedee j j fddZ defd d Z deeeffd d Zd eddfddZdefddZdBdededefddZdeddfddZddZeZddZdCdedefd d!Zdefd"d#ZdCdedefd$d%ZdCdedefd&d'ZdCdedefd(d)ZdDd*eedefd+d,Zdefd-d.Z dDd/eede!efd0d1Z"dEd2edefd3d4Z#   dFded5ee j j$d6ed7ee j j$de j j$f d8d9Z%   dFd5ee j j$d6ed7ee j j$de j j$fd:d;Z&defdd?Z(defd@dAZ)dS)G TokenizeraA DNS zone file format tokenizer. A token object is basically a (type, value) tuple. The valid types are EOF, EOL, WHITESPACE, IDENTIFIER, QUOTED_STRING, COMMENT, and DELIMITER. file: The file to tokenize ungotten_char: The most recently ungotten character, or None. ungotten_token: The most recently ungotten token, or None. multiline: The current multiline level. This value is increased by one every time a '(' delimiter is read, and decreased by one every time a ')' delimiter is read. quoting: This variable is true if the tokenizer is currently reading a quoted string. eof: This variable is true if the tokenizer has encountered EOF. delimiters: The current delimiter dictionary. line_number: The current line number filename: A filename that will be returned by the where() method. idna_codec: A dns.name.IDNACodec, specifies the IDNA encoder/decoder. If None, the default IDNA 2003 encoder/decoder is used. Nffilename idna_codeccCst|trt|}|durd}n!t|tr$t|}|dur#d}n|dur2|tjur0d}nd}||_d|_ d|_ d|_ d|_ d|_ t|_d|_|dusPJ||_|dur^tjj|_dS||_dS)aInitialize a tokenizer instance. f: The file to tokenize. The default is sys.stdin. This parameter may also be a string, in which case the tokenizer will take its input from the contents of the string. filename: the name of the filename that the where() method will return. idna_codec: A dns.name.IDNACodec, specifies the IDNA encoder/decoder. If None, the default IDNA 2003 encoder/decoder is used. NzzzrFr )r7rXioStringIOrUdecodesysstdinfile ungotten_charungotten_token multilinequotingeof _DELIMITERS delimiters line_numberr[rCname IDNA_2003r\)r rZr[r\rrrr!s6      zTokenizer.__init__r"cCs`|jdur(|jr d}|S|jd}|dkrd|_|S|dkr&|jd7_|S|j}d|_|S)zRead a character from input.Nrr Tr)rcrgrbreadrjr rNrrr _get_chars  zTokenizer._get_charcCs |j|jfS)zReturn the current location in the input. Returns a (string, int) tuple. The first item is the filename of the input, the second is the current line number. )r[rjr&rrrwhere)s zTokenizer.whererNcC|jdurt||_dS)a%Unget a character. The unget buffer for characters is only one character large; it is an error to try to unget a character when the unget buffer is not empty. c: the character to unget raises UngetBufferFull: there is already an ungotten char N)rcrrnrrr _unget_char2s  zTokenizer._unget_charcCsDd} |}|dkr|dkr|dks|js|||S|d7}q)aFConsume input until a non-whitespace character is encountered. The non-whitespace character is then ungotten, and the number of whitespace characters consumed is returned. If the tokenizer is in multiline mode, then newlines are whitespace. Returns the number of characters skipped. rTrrrr )rorerr)r skippedrNrrrskip_whitespaceBs  zTokenizer.skip_whitespaceF want_leading want_commentc Cs|jdur|j}d|_|r|r|Sn |r|r|Sn|S|}|r.|dkr.ttdSd}t}d} |}|dksB||jvr|dkrM|j rMt j j |dkr|t kr|dkre|jd7_|q4|d kr~|jdkrrt j j|jd8_|q4|d kr|j sd|_ t|_t }q4d|_ t|_|q4|d krttd S|d kr |}|d ks|dkrn||7}q|r||tt|S|dkr|jrt j d tt|dS|jr|d}q4ttd |dS|}t}n||n5|j r|d krt j d|dkr$||7}d}|}|dks |d kr$|j s$t j j ||7}q5|dkr?|t kr?|jr=t j d t}t|||S)aGet the next token. want_leading: If True, return a WHITESPACE token if the first character read is whitespace. The default is False. want_comment: If True, return a COMMENT token if the first token read is a comment. The default is False. Raises dns.exception.UnexpectedEnd: input ended prematurely Raises dns.exception.SyntaxError: input was badly formed Returns a Token. NrrrFTr r r r rr zunbalanced parentheses)rznewline in quoted stringr>)rdr,r2rtrr+r-rorirfrCrDrEr/rerG_QUOTING_DELIMITERSrhr)rrr1r%r3) r rurvutokenrstokenrrrNrrrgetVs           H  z Tokenizer.getrycCrq)aUnget a token. The unget buffer for tokens is only one token large; it is an error to try to unget a token when the unget buffer is not empty. token: the token to unget Raises UngetBufferFull: there is already an ungotten token N)rdrr ryrrrungets  zTokenizer.ungetcCs|}|r t|S)zHReturn the next item in an iteration. Returns a Token. )rzr' StopIterationr{rrrnextszTokenizer.nextcCs|Sr$rr&rrr__iter__szTokenizer.__iter__r@basecCsB|}|stjd|jstjdt|j|S)zRead the next token and interpret it as an unsigned integer. Raises dns.exception.SyntaxError if not an unsigned integer. Returns an int. expecting an identifierzexpecting an integer) rzrRr.rCrDrGrrFrH)r rryrrrget_ints     zTokenizer.get_intcCs,|}|dks |dkrtjd||S)zRead the next token and interpret it as an 8-bit unsigned integer. Raises dns.exception.SyntaxError if not an 8-bit unsigned integer. Returns an int. rrAz#%d is not an unsigned 8-bit integerrrCrDrG)r rrrr get_uint8s  zTokenizer.get_uint8cCsL|j|d}|dks|dkr$|dkrtj|ddtjd||S)zRead the next token and interpret it as a 16-bit unsigned integer. Raises dns.exception.SyntaxError if not a 16-bit unsigned integer. Returns an int. rrioz( is not an octal unsigned 16-bit integerz$%d is not an unsigned 16-bit integerrr rrrrr get_uint16s  zTokenizer.get_uint16cC0|j|d}|dks|dkrtjd||S)zRead the next token and interpret it as a 32-bit unsigned integer. Raises dns.exception.SyntaxError if not a 32-bit unsigned integer. Returns an int. rrlz$%d is not an unsigned 32-bit integerrrrrr get_uint32 zTokenizer.get_uint32cCr)zRead the next token and interpret it as a 48-bit unsigned integer. Raises dns.exception.SyntaxError if not a 48-bit unsigned integer. Returns an int. rrlz$%d is not an unsigned 48-bit integerrrrrr get_uint48+rzTokenizer.get_uint48 max_lengthcCsL|}|s|stjd|r#t|j|kr#tjd|jS)zRead the next token and interpret it as a string. Raises dns.exception.SyntaxError if not a string. Raises dns.exception.SyntaxError if token value length exceeds max_length (if specified). Returns a string. zexpecting a stringzstring too long) rzrRr.r0rCrDrGrBr)r rryrrr get_string;s   zTokenizer.get_stringcCs&|}|stjd|jS)zRead the next token, which should be an identifier. Raises dns.exception.SyntaxError if not an identifier. Returns a string. r)rzrRr.rCrDrGrr{rrrget_identifierLs  zTokenizer.get_identifier max_tokenscCsDg} |}|r|| |S||t||kr! |Sq)zReturn the remaining tokens on the line, until an EOL or EOF is seen. max_tokens: If not None, stop after this number of tokens. Returns a list of tokens. )rzr5r|appendrB)r rtokensryrrr get_remainingYs  zTokenizer.get_remaining allow_emptycCsZd} |}|r||n|stjj||j7}q|s+|s+tjd|S)aRead the remaining tokens on the line, which should be identifiers. Raises dns.exception.SyntaxError if there are no remaining tokens, unless `allow_empty=True` is given. Raises dns.exception.SyntaxError if a token is seen that is not an identifier. Returns a string containing a concatenation of the remaining identifiers. rTzexpecting another identifier) rzrRr5r|r.rCrDrGr)r rsryrrr!concatenate_remaining_identifiersls     z+Tokenizer.concatenate_remaining_identifiersorigin relativize relativize_tocCs8|s tjdtj|j||j}||p||S)zTry to interpret the token as a DNS name. Raises dns.exception.SyntaxError if not a name. Returns a dns.name.Name. r) r.rCrDrGrk from_textrr\choose_relativity)r ryrrrrkrrras_names zTokenizer.as_namecCs|}|||||S)zRead the next token and interpret it as a DNS name. Raises dns.exception.SyntaxError if not a name. Returns a dns.name.Name. )rzr)r rrrryrrrget_names zTokenizer.get_namecCs,|}|stjd|j|jf|S)znRead the next token and raise an exception if it isn't EOL or EOF. Returns a string. z expected EOL or EOF, got %d "%s")rzr5rCrDrGrrr{rrrget_eol_as_tokens zTokenizer.get_eol_as_tokencCs |jSr$)rrr&rrrget_eolr(zTokenizer.get_eolcCs.|}|stjdtj|jS)zRead the next token and interpret it as a DNS TTL. Raises dns.exception.SyntaxError or dns.ttl.BadTTL if not an identifier or badly formed. Returns an int. r) rzrRr.rCrDrGttlrrr{rrrget_ttls  zTokenizer.get_ttl)FF)r@r$)F)NFN)*rrrrr`rarrrXrCrk IDNACodecr!rorrHrprrrtrWrrzr|r~__next__rrrrrrrrrrrNamerrrrrrrrrrYsv"  1 o        rY)rr]r`typingrrrr dns.exceptionrCdns.namedns.ttlrhrwr%r)r+r-r/r1r3rD DNSExceptionrrrYrrrrs(