o 2³cpWã@sŠdZddlZddlZddlZddlZddlZhd£ZdhZdZ dZ dZ dZ dZ d Zd ZGd d „d ejjƒZGd d„dƒZGdd„dƒZdS)zTokenize DNS zone file formatéN>Ú ú ú ú"ú(ú)ú;rééééééc@seZdZdZdS)ÚUngetBufferFullzDAn attempt was made to unget a token when the unget buffer was full.N)Ú__name__Ú __module__Ú __qualname__Ú__doc__©rrúC/var/www/html/gps/gps/lib/python3.10/site-packages/dns/tokenizer.pyr'src@s‚eZdZdZd!dd„Zdd„Zd d „Zd d „Zd d„Zdd„Z dd„Z dd„Z dd„Z dd„Z dd„Zdd„Zdd„Zdd „ZdS)"ÚTokenzŽA DNS zone file format token. ttype: The token type value: The token value has_escape: Does the token value contain escapes? ÚFNcCs||_||_||_||_dS)zInitialize a token instance.N)ÚttypeÚvalueÚ has_escapeÚcomment)ÚselfrrrrrrrÚ__init__3s zToken.__init__cCó |jtkS©N)rÚEOF©rrrrÚis_eof;ó z Token.is_eofcCrr)rÚEOLr!rrrÚis_eol>r#z Token.is_eolcCrr)rÚ WHITESPACEr!rrrÚ is_whitespaceAr#zToken.is_whitespacecCrr)rÚ IDENTIFIERr!rrrÚ is_identifierDr#zToken.is_identifiercCrr)rÚ QUOTED_STRINGr!rrrÚis_quoted_stringGr#zToken.is_quoted_stringcCrr)rÚCOMMENTr!rrrÚ is_commentJr#zToken.is_commentcCrr)rÚ DELIMITERr!rrrÚ is_delimiterMr#zToken.is_delimitercCs|jtkp |jtkSr)rr$r r!rrrÚ is_eol_or_eofPszToken.is_eol_or_eofcCs&t|tƒsdS|j|jko|j|jkS)NF©Ú isinstancerrr©rÚotherrrrÚ__eq__Só   ÿz Token.__eq__cCs&t|tƒsdS|j|jkp|j|jkS)NTr1r3rrrÚ__ne__Yr6z Token.__ne__cCsd|j|jfS)Nz%d "%s")rrr!rrrÚ__str___sz Token.__str__cCs|js|Sd}t|jƒ}d}||kr†|j|}|d7}|dkr~||kr'tjj‚|j|}|d7}| ¡r~||kr      é zToken.unescapecCs*d}t|jƒ}d}||kr|j|}|d7}|dkrƒ||kr"tjj‚|j|}|d7}| ¡r|||kr7tjj‚|j|}|d7}||krHtjj‚|j|}|d7}| ¡rY| ¡s]tjj‚t|ƒdt|ƒdt|ƒ}|dkrutjj‚|d|7}n || ¡7}n|| ¡7}||ks t |j t |ƒƒS) Nórr r9r:r;r<s%c) r=rr>r?r@rArBrCÚencoderrÚbytesrErrrÚunescape_to_bytes‚s<       á zToken.unescape_to_bytes)rFN)rrrrrr"r%r'r)r+r-r/r0r5r7r8rMrQrrrrr+s   rc@sèeZdZdZejddfdd„Zdd„Zdd„Zd d „Z d d „Z d3dd„Z dd„Z dd„Z e Zdd„Zd4dd„Zdd„Zd4dd„Zd4dd„Zd4dd „Zd5d!d"„Zd#d$„Zd5d%d&„Zd'd(„Zd6d)d*„Zd6d+d,„Zd-d.„Zd/d0„Zd1d2„ZdS)7Ú TokenizeraîA 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. NcCs´t|tƒrt |¡}|durd}n!t|tƒr$t | ¡¡}|dur#d}n|dur2|tjur0d}nd}||_d|_ d|_ d|_ d|_ d|_ t|_d|_||_|durUtjj}||_dS)aÝInitialize 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 )r2ÚstrÚioÚStringIOrPÚdecodeÚsysÚstdinÚfileÚ ungotten_charÚungotten_tokenÚ multilineÚquotingÚeofÚ _DELIMITERSÚ delimitersÚ line_numberÚfilenamer>ÚnameÚ IDNA_2003Ú idna_codec)rÚfrbrerrrrâs4  € €  zTokenizer.__init__cCs`|jdur(|jr d}|S|j d¡}|dkrd|_|S|dkr&|jd7_|S|j}d|_|S)z%Read a character from input. Nrr Tr)rZr^rYÚreadra©rrIrrrÚ _get_char s  øûþzTokenizer._get_charcCs |j|jfS)z·Return 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. )rbrar!rrrÚwheres zTokenizer.wherecCó|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)rZrrhrrrÚ _unget_char's  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 )rir\rl)rÚskippedrIrrrÚskip_whitespace7s  úzTokenizer.skip_whitespaceFcCsŠ|jdur|j}d|_| ¡r|r|Sn | ¡r|r|Sn|S| ¡}|r.|dkr.ttdƒSd}t}d} | ¡}|dksB||jvrô|dkrM|j rMt j j ‚|dkrî|t krî|dkre|jd7_| ¡q4|d kr~|jdkrrt j j‚|jd8_| ¡q4|d kr™|j sŽd|_ t|_t }q4d|_ t|_| ¡q4|d kr¢ttd ƒS|d kré | ¡}|d ks³|dkr´n||7}q§|rÅ| |¡tt|ƒS|dkrØ|jrÒt j  d ¡‚tt|dS|jrâ| ¡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|||ƒS)a½Get 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. NrrrFTrr rrrrzunbalanced parentheses)rznewline in quoted stringr9)r[r'r-rnrr&r(rir`r]r>r?r@r*r\rBÚ_QUOTING_DELIMITERSr_r$rlr,r r.)rÚ want_leadingÚ want_commentÚtokenrmrrrIrrrÚgetKs¬ ÿÿ    ü  ÿ    ºG  z Tokenizer.getcCrk)aUnget a token. The unget buffer for tokens is only one token large; it is an error to try to unget a token when the unget buffer is not empty. token: the token to unget Raises UngetBufferFull: there is already an ungotten token N)r[r©rrrrrrÚunget¹s  zTokenizer.ungetcCs| ¡}| ¡r t‚|S)zHReturn the next item in an iteration. Returns a Token. )rsr"Ú StopIterationrtrrrÚnextÉszTokenizer.nextcCs|Srrr!rrrÚ__iter__ÖszTokenizer.__iter__r;cCsB| ¡ ¡}| ¡stj d¡‚|j ¡stj d¡‚t|j|ƒS)z¤Read the next token and interpret it as an unsigned integer. Raises dns.exception.SyntaxError if not an unsigned integer. Returns an int. úexpecting an identifierzexpecting an integer) rsrMr)r>r?rBrrArC)rÚbaserrrrrÚget_intÛs     zTokenizer.get_intcCs,| ¡}|dks |dkrtj d|¡‚|S)z¸Read the next token and interpret it as an 8-bit unsigned integer. Raises dns.exception.SyntaxError if not an 8-bit unsigned integer. Returns an int. rr<z#%d is not an unsigned 8-bit integer©r{r>r?rB)rrrrrÚ get_uint8ês  ÿzTokenizer.get_uint8cCsH|j|d}|dks|dkr"|dkrtj d|¡‚tj d|¡‚|S)z¸Read the next token and interpret it as a 16-bit unsigned integer. Raises dns.exception.SyntaxError if not a 16-bit unsigned integer. Returns an int. ©rzriÿÿéz*%o is not an octal unsigned 16-bit integerz$%d is not an unsigned 16-bit integerr|©rrzrrrrÚ get_uint16ùs ÿÿzTokenizer.get_uint16cCó0|j|d}|dks|dkrtj d|¡‚|S)z¸Read 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. r~rlÿÿz$%d is not an unsigned 32-bit integerr|r€rrrÚ get_uint32 ó ÿzTokenizer.get_uint32cCr‚)z¸Read the next token and interpret it as a 48-bit unsigned integer. Raises dns.exception.SyntaxError if not a 48-bit unsigned integer. Returns an int. r~rlÿÿÿz$%d is not an unsigned 48-bit integerr|r€rrrÚ get_uint48r„zTokenizer.get_uint48cCsL| ¡ ¡}| ¡s| ¡stj d¡‚|r#t|jƒ|kr#tj d¡‚|jS)zúRead 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) rsrMr)r+r>r?rBr=r)rÚ max_lengthrrrrrÚ get_string*s   zTokenizer.get_stringcCs&| ¡ ¡}| ¡stj d¡‚|jS)z—Read the next token, which should be an identifier. Raises dns.exception.SyntaxError if not an identifier. Returns a string. ry)rsrMr)r>r?rBrrtrrrÚget_identifier;s  zTokenizer.get_identifiercCsDg} | ¡}| ¡r| |¡ |S| |¡t|ƒ|kr! |Sq)zµReturn 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. )rsr0ruÚappendr=)rÚ max_tokensÚtokensrrrrrÚ get_remainingHs  ý øzTokenizer.get_remainingcCsFd} | ¡ ¡}| ¡r| |¡ |S| ¡stjj‚||j7}q)aRead the remaining tokens on the line, which should be identifiers. Raises dns.exception.SyntaxError if a token is seen that is not an identifier. Returns a string containing a concatenation of the remaining identifiers. r) rsrMr0rur)r>r?rBr)rÚsrrrrrÚ!concatenate_remaining_identifiers[s   ý ùz+Tokenizer.concatenate_remaining_identifierscCs8| ¡s tj d¡‚tj |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. ry) r)r>r?rBrcÚ from_textrreÚchoose_relativity)rrrÚoriginÚ relativizeÚ relativize_torcrrrÚas_nameos zTokenizer.as_namecCs| ¡}| ||||¡S)z—Read the next token and interpret it as a DNS name. Raises dns.exception.SyntaxError if not a name. Returns a dns.name.Name. )rsr”)rr‘r’r“rrrrrÚget_name{szTokenizer.get_namecCs,| ¡}| ¡stj d|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")rsr0r>r?rBrrrtrrrÚget_eol_as_token†sÿÿzTokenizer.get_eol_as_tokencCs | ¡jSr)r–rr!rrrÚget_eol”r#zTokenizer.get_eolcCs.| ¡ ¡}| ¡stj d¡‚tj |j¡S)z¾Read 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. ry) rsrMr)r>r?rBÚttlrrrtrrrÚget_ttl—s  zTokenizer.get_ttl)FF)r;r)NFN)rrrrrWrXrrirjrlrnrsrurwÚ__next__rxr{r}rrƒr…r‡rˆrŒrŽr”r•r–r—r™rrrrrRÁs4 *  n           rR)rrTrWÚ dns.exceptionr>Údns.nameÚdns.ttlr_ror r$r&r(r*r,r.r?Ú DNSExceptionrrrRrrrrÚs&