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nntplib.cpython-310.pyc
o Eh? @ s> d Z ddlZddlZddlZddlZddlZzddlZW n ey' dZY nw dZddl m Z ddlm Z g dZ dZG d d d eZG d d d eZG d d deZG dd deZG dd deZG dd deZdZdZh dZg dZdddZd Ze d g d Z e d g d Z d!d" Z d#d$ Z dZd%d&Z dZd'd(Z!d[d)d*Z"erd+d, Z#G d-d. d.Z$erG d/d0 d0e$Z%e &d0 e'd1krddl(Z(e(j)d2d3Z*e*j+d4d5d6d7d8 e*j+d9d:d;d<d8 e*j+d=d>d?e,d@eef dA e*j+dBdCdDe,dEdA e*j+dFdGdHddIdJ e*- Z.e.j/Z/e.js e/d?kreZ/e$e.j0e/dKZ1ne/d?kr&eZ/e%e.j0e/dKZ1e12 Z3dLe3v r:e14 e15e.j5\Z6Z7Z8Z9Z:e;dMe:dNe7dOe8dPe9 dQdR Z<e=e,e9e.j> dS Z8e1?e8e9\Z6Z@e@D ]-\ZAZBe eBdT CdUdSd ZDe eBdV ZEe,eBd ZFe;dWGeAe<eDdXe<eEdYeF qie1H dS dS )\a An NNTP client class based on: - RFC 977: Network News Transfer Protocol - RFC 2980: Common NNTP Extensions - RFC 3977: Network News Transfer Protocol (version 2) Example: >>> from nntplib import NNTP >>> s = NNTP('news') >>> resp, count, first, last, name = s.group('comp.lang.python') >>> print('Group', name, 'has', count, 'articles, range', first, 'to', last) Group comp.lang.python has 51 articles, range 5770 to 5821 >>> resp, subs = s.xhdr('subject', '{0}-{1}'.format(first, last)) >>> resp = s.quit() >>> Here 'resp' is the server response line. Error responses are turned into exceptions. To post an article from a file: >>> f = open(filename, 'rb') # file containing article, including header >>> resp = s.post(f) >>> For descriptions of all methods, read the comments in the code below. Note that all arguments and return values representing article numbers are strings, not numbers, since they are rarely used for calculations. NFT) decode_header)_GLOBAL_DEFAULT_TIMEOUT)NNTP NNTPErrorNNTPReplyErrorNNTPTemporaryErrorNNTPPermanentErrorNNTPProtocolError NNTPDataErrorr i c @ s e Zd ZdZdd ZdS )r z%Base class for all nntplib exceptionsc G s> t j| g|R z|d | _W d S ty d| _Y d S w )Nr zNo response given) Exception__init__response IndexError)selfargs r /usr/lib/python3.10/nntplib.pyr b s zNNTPError.__init__N)__name__ __module__ __qualname____doc__r r r r r r ` s r c @ e Zd ZdZdS )r zUnexpected [123]xx replyNr r r r r r r r r i r c @ r )r z 4xx errorsNr r r r r r m r r c @ r )r z 5xx errorsNr r r r r r q r r c @ r )r z"Response does not begin with [1-5]Nr r r r r r u r r c @ r )r zError in response dataNr r r r r r y r r w i3 > 100101211215220221222224225230231282)subjectfromdatez message-id references:bytes:linesr+ r, )byteslines GroupInfo)grouplastfirstflag ArticleInfo)number message_idr. c C sJ g }t | D ]\}}t|tr|||pd q|| qd|S )zvTakes a unicode string representing a munged header value and decodes it as a (possibly non-ASCII) readable value.ascii )_email_decode_header isinstancer- appenddecodejoin) header_strpartsvencr r r r s r c C s g }| D ]0}|d dkr |dd d\}}}d| }n| d\}}}| }t||}|| qt}t|t|k rCtd|dt| |krQtd|S )zParse a list of string representing the response to LIST OVERVIEW.FMT and return a list of header/metadata names. Raises NNTPDataError if the response is not compliant (cf. RFC 3977, section 8.4).r : Nz$LIST OVERVIEW.FMT response too shortz*LIST OVERVIEW.FMT redefines default fields) partitionlower_OVERVIEW_FMT_ALTERNATIVESgetr< _DEFAULT_OVERVIEW_FMTlenr )r. fmtlinename_suffixdefaultsr r r _parse_overview_fmt s rQ c C s t t}g }| D ]]}i }|d^}}t|}t|D ]B\} } | t |kr&q|| } | d} | |krW| sW| d } | rK| dt | | krKtd| rU| t | d nd} | ||| < q|||f q|S )zZParse the response to an OVER or XOVER command according to the overview format `fmt`. rC z: Nz?OVER/XOVER response doesn't include names of additional headers) rJ rI splitint enumerate startswithrF r r< )r. rK data_process_func n_defaultsoverviewrL fieldsarticle_numbertokensitoken field_name is_metadatahr r r _parse_overview s& rb c C s |du r| dd }| dd } t |dd }t |dd }t |dd }t | dd }t | dd }t | dd }|dk rI|d7 }n|d k rQ|d 7 }t||||||S ) zParse a pair of (date, time) strings, and return a datetime object. If only the date is given, it is assumed to be date and time concatenated together (e.g. response to the DATE command). Ni F i d il )rT datetime)date_strtime_strhoursminutessecondsyearmonthdayr r r _parse_datetime s rr c C sV t | tjs d}nd| }| j}|r!|d }d|| }||fS d|| }||fS )aP Format a date or datetime object as a pair of (date, time) strings in the format required by the NEWNEWS and NEWGROUPS commands. If a date object is passed, the time is assumed to be midnight (00h00). The returned representation depends on the legacy flag: * if legacy is False (the default): date has the YYYYMMDD format and time the HHMMSS format * if legacy is True: date has the YYMMDD format and time the HHMMSS format. RFC 3977 compliant servers should understand both formats; therefore, legacy is only needed when talking to old servers. 000000z({0.hour:02d}{0.minute:02d}{0.second:02d}rh z {0:02d}{1.month:02d}{1.day:02d}z {0:04d}{1.month:02d}{1.day:02d})r; ri formatro )dtlegacyrk yrj r r r _unparse_datetime s rx c C s |du rt }|j| |dS )zWrap a socket in SSL/TLS. Arguments: - sock: Socket to wrap - context: SSL context to use for the encrypted connection Returns: - sock: New, encrypted socket. N)server_hostname)ssl_create_stdlib_context wrap_socket)sockcontexthostnamer r r _encrypt_on s r c @ s e Zd ZdZdZeddddefddZdd Zd d Z d d Z d d Z dd Z dd Z dd ZeZdd Zdd ZdiddZd d Zdjd d Zd d! Zdjd"d#Zdjd$d%Zd&d' Zd(d) Zd*d+ Zdd,d-d.Zdd,d/d0Z djdd,d1d2Z d3d4 Z d5d6 Z d7d8 Z d9d: Z!dd,d;d<Z"d=d> Z#d?d@ Z$djdAdBZ%dCdD Z&dEdF Z'djdGdHZ(djdd,dIdJZ)djdd,dKdLZ*djdd,dMdNZ+dOdP Z,dd,dQdRZ-dd,dSdTZ.dd,dUdVZ/dWdX Z0dYdZ Z1d[d\ Z2d]d^ Z3d_d` Z4dadb Z5dkdcddZ6dedf Z7e8rdjdgdhZ9dS dS )lr zutf-8surrogateescapeNFc C s| || _ || _| || _d| _z | jd| _| | |s |r*| ||| W dS W dS | jr8| j | j )a, Initialize an instance. Arguments: - host: hostname to connect to - port: port to connect to (default the standard NNTP port) - user: username to authenticate with - password: password to use with username - readermode: if true, send 'mode reader' command after connecting. - usenetrc: allow loading username and password from ~/.netrc file if not specified explicitly - timeout: timeout (in seconds) used for socket connections readermode is sometimes necessary if you are connecting to an NNTP server on the local machine and intend to call reader-specific commands, such as `group'. If you get unexpected NNTPPermanentErrors, you might need to set readermode. Nrwb) hostport_create_socketr} filemakefile _base_initloginclose)r r r userpassword readermodeusenetrctimeoutr r r r 8 s z NNTP.__init__c C s^ d| _ | | _d| _| d| _|r'd| jvr'| | js'd| _| d| _d| _dS )z~Partial initialization for the NNTP protocol. This instance method is extracted for supporting the test code. r NFREADER) debugging_getrespwelcome_capsgetcapabilitiesreadermode_afterauth_setreadermodetls_on authenticated)r r r r r r [ s zNNTP._base_initc C s | S Nr r r r r __enter__} s zNNTP.__enter__c sf fdd}| r1z z W n ttfy Y nw W | r& d S d S | r0 w w d S )Nc s t dS )Nr )hasattrr r r r <lambda> s z NNTP.__exit__.<locals>.<lambda>)quitOSErrorEOFError_close)r r is_connectedr r r __exit__ s z NNTP.__exit__c C s< |d ur |s t dtd| | j| j t| j| jf|S )Nz0Non-blocking socket (timeout=0) is not supportedznntplib.connect) ValueErrorsysauditr r socketcreate_connection)r r r r r r s zNNTP._create_socketc C s | j r tdt| j | jS )zGet the welcome message from the server (this is read and squirreled away by __init__()). If the response code is 200, posting is allowed; if it 201, posting is not allowed.z *welcome*)r printreprr r r r r getwelcome s zNNTP.getwelcomec C s | j du rAd| _d| _z| \}}W n ttfy# i | _ Y | j S w || _ d|v r5ttt|d | _d|v rAd |d | _| j S )zGet the server capabilities, as read by __init__(). If the CAPABILITIES command is not supported, an empty dict is returned.NrD VERSIONIMPLEMENTATION ) r nntp_versionnntp_implementation capabilitiesr r maxmaprT r> )r respcapsr r r r s zNNTP.getcapabilitiesc C s || _ dS )zSet the debugging level. Argument 'level' means: 0: no debugging output (default) 1: print commands and responses but not body text etc. 2: also print raw lines read and sent before stripping CR/LFN)r )r levelr r r set_debuglevel s zNNTP.set_debuglevelc C sH t d| | |t }| jdkrtdt| | j| | j dS )zfInternal: send one line to the server, appending CRLF. The `line` must be a bytes-like object.znntplib.putlinerD z*put*N) r r _CRLFr r r r writeflushr rL r r r _putline s z NNTP._putlinec C s2 | j r tdt| || j| j}| | dS )zkInternal: send one command to the server (through _putline()). The `line` must be a unicode string.z*cmd*N)r r r encodeencodingerrorsr r r r r _putcmd s z NNTP._putcmdTc C s | j td }t|tkrtd| jdkr tdt| |s"t|rB|dd t kr4|dd }|S |dd t v rB|dd }|S )zInternal: return one line from the server, stripping _CRLF. Raise EOFError if the connection is closed. Returns a bytes object.rD z line too longz*get*rf N) r readline_MAXLINErJ r r r r r r )r strip_crlfrL r r r _getline s z NNTP._getlinec C sl | }| jrtdt| || j| j}|dd }|dkr$t||dkr,t||dvr4t ||S )zInternal: get a response from the server. Raise various errors if the response indicates an error. Returns a unicode string.z*resp*NrD 45123) r r r r r= r r r r r )r r cr r r r s z NNTP._getrespc C s d}zot |ttfrt|d }}| }|dd tvr!t|g }|durJdt df} | d}||v r8n| drC|dd }| | q.n d} | }||krVn| dra|dd }| | qMW |rn| ||fS |ry| w w ) aP Internal: get a response plus following text from the server. Raise various errors if the response indicates an error. Returns a (response, lines) tuple where `response` is a unicode string and `lines` is a list of bytes objects. If `file` is a file-like object, it must be open in binary mode. Nwb .s . rD Fs ..) r; strr- openr _LONGRESPr r r rV r r< r )r r openedFiler r. terminatorsrL terminatorr r r _getlongresp sF zNNTP._getlongrespc C s | | | S )zWInternal: send a command and get the response. Same return value as _getresp().)r r r r r r _shortcmd s zNNTP._shortcmdc C s | | | |S )zoInternal: send a command and get the response plus following text. Same return value as _getlongresp().r r )r rL r r r r _longcmd s z NNTP._longcmdc s. | |\}}| fdd|D fS )zInternal: send a command and get the response plus following text. Same as _longcmd() and _getlongresp(), except that the returned `lines` are unicode strings rather than bytes objects. c s g | ] }| j jqS r )r= r r .0rL r r r <listcomp>+ s z'NNTP._longcmdstring.<locals>.<listcomp>r )r rL r r listr r r _longcmdstring$ s zNNTP._longcmdstringc C s` z| j W S ty Y nw z | d\}}W n ty& tdd }Y nw t|}|| _ |S )zqInternal: get the overview format. Queries the server if not already done, else returns the cached value.zLIST OVERVIEW.FMTN)_cachedoverviewfmtAttributeErrorr r rI rQ )r r r. rK r r r _getoverviewfmt. s zNNTP._getoverviewfmtc C s dd |D S )Nc S s g | ]}t | qS r )r0 rS r r r r r A s z#NNTP._grouplist.<locals>.<listcomp>r )r r. r r r _grouplist? s zNNTP._grouplistc C s8 i }| d\}}|D ] }| ^}}|||< q ||fS )a! Process a CAPABILITIES command. Not supported by all servers. Return: - resp: server response if successful - caps: a dictionary mapping capability names to lists of tokens (for example {'VERSION': ['2'], 'OVER': [], LIST: ['ACTIVE', 'HEADERS'] }) CAPABILITIES)r rS )r r r r. rL rM r\ r r r r C s zNNTP.capabilities)r c C sb t |tjtjfstd|jjt|| jdk \}}d||}| ||\}}|| |fS )zProcess a NEWGROUPS command. Arguments: - date: a date or datetime object Return: - resp: server response if successful - list: list of newsgroup names Athe date parameter must be a date or datetime object, not '{:40}'rc zNEWGROUPS {0} {1}) r; ri r) TypeErrorrt __class__r rx r r r )r r) r rj rk cmdr r. r r r newgroupsQ s zNNTP.newgroupsc C sR t |tjtjfstd|jjt|| jdk \}}d|||}| ||S )zProcess a NEWNEWS command. Arguments: - group: group name or '*' - date: a date or datetime object Return: - resp: server response if successful - list: list of message ids r rc zNEWNEWS {0} {1} {2}) r; ri r) r rt r r rx r r )r r1 r) r rj rk r r r r newnewsa s z NNTP.newnewsc C s4 |dur d| }nd}| ||\}}|| |fS )a@ Process a LIST or LIST ACTIVE command. Arguments: - group_pattern: a pattern indicating which groups to query - file: Filename string or file object to store the result in Returns: - resp: server response if successful - list: list of (group, last, first, flag) (strings) Nz LIST ACTIVE LIST)r r )r group_patternr commandr r. r r r r q s z NNTP.listc C s t d}| d| \}}|ds | d| \}}i }|D ] }|| }|r=|dd\} } |s9| S | || < q |rD||fS dS )Nz ^(?P<group>[^ ]+)[ ]+(.*)$zLIST NEWSGROUPS r zXGTITLE rD rc r9 )recompiler rV searchstripr1 ) r r return_allline_patr r. groupsraw_linematchrM descr r r _getdescriptions s zNNTP._getdescriptionsc C | |dS )a Get a description for a single group. If more than one group matches ('group' is a pattern), return the first. If no group matches, return an empty string. This elides the response code from the server, since it can only be '215' or '285' (for xgtitle) anyway. If the response code is needed, use the 'descriptions' method. NOTE: This neither checks for a wildcard in 'group' nor does it check whether the group actually exists.Fr )r r1 r r r description s zNNTP.descriptionc C r )z'Get descriptions for a range of groups.Tr )r r r r r descriptions s zNNTP.descriptionsc C s | d| }|dst|| }d } }}t|}|dkr@|d }|dkr@|d }|dkr@|d }|dkr@|d }|t|t|t||fS )a Process a GROUP command. Argument: - group: the group name Returns: - resp: server response if successful - count: number of articles - first: first article number - last: last article number - name: the group name zGROUP r r rD rc r rd )r rV r rS rJ rF rT )r rM r wordscountr3 r2 nr r r r1 s z NNTP.groupc C | d|S )a Process a HELP command. Argument: - file: Filename string or file object to store the result in Returns: - resp: server response if successful - list: list of strings returned by the server in response to the HELP command HELP)r )r r r r r help s z NNTP.helpc C s8 | ds t|| }t|d }|d }|||fS )z_Internal: parse the response line of a STAT, NEXT, LAST, ARTICLE, HEAD or BODY command.22rD rc )rV r rS rT )r r r art_numr7 r r r _statparse s zNNTP._statparsec C s | |}| |S )z/Internal: process a STAT, NEXT or LAST command.)r r )r rL r r r r _statcmd s z NNTP._statcmdc C s |r | d|S | dS )a( Process a STAT command. Argument: - message_spec: article number or message id (if not specified, the current article is selected) Returns: - resp: server response if successful - art_num: the article number - message_id: the message id zSTAT {0}STAT)r rt )r message_specr r r stat s z NNTP.statc C | dS )z;Process a NEXT command. No arguments. Return as for STAT.NEXTr r r r r next z NNTP.nextc C r )z;Process a LAST command. No arguments. Return as for STAT.LASTr r r r r r2 r z NNTP.lastc C s0 | ||\}}| |\}}}|t|||fS )z2Internal: process a HEAD, BODY or ARTICLE command.)r r r5 )r rL r r r. r r7 r r r _artcmd s z NNTP._artcmdc C $ |dur d |}nd}| ||S )a0 Process a HEAD command. Argument: - message_spec: article number or message id - file: filename string or file object to store the headers in Returns: - resp: server response if successful - ArticleInfo: (article number, message id, list of header lines) NzHEAD {0}HEADrt r r r r r r r r head z NNTP.headc C r )a+ Process a BODY command. Argument: - message_spec: article number or message id - file: filename string or file object to store the body in Returns: - resp: server response if successful - ArticleInfo: (article number, message id, list of body lines) NzBODY {0}BODYr r r r r body r z NNTP.bodyc C r )a5 Process an ARTICLE command. Argument: - message_spec: article number or message id - file: filename string or file object to store the article in Returns: - resp: server response if successful - ArticleInfo: (article number, message id, list of article lines) Nz ARTICLE {0}ARTICLEr r r r r article r z NNTP.articlec C r )zYProcess a SLAVE command. Returns: - resp: server response if successful SLAVE)r r r r r slave! s z NNTP.slavec sD t d | d|||\}} fdd|fdd|D fS )ai Process an XHDR command (optional server extension). Arguments: - hdr: the header type (e.g. 'subject') - str: an article nr, a message id, or a range nr1-nr2 - file: Filename string or file object to store the result in Returns: - resp: server response if successful - list: list of (nr, value) strings z^([0-9]+) ?(.*) ?z XHDR {0} {1}c s | }|r |ddS | S )NrD rc )r r1 )rL m)patr r remove_number2 s z NNTP.xhdr.<locals>.remove_numberc s g | ]} |qS r r r )r r r r 5 s z NNTP.xhdr.<locals>.<listcomp>)r r r rt )r hdrr r r r. r )r r r xhdr' s z NNTP.xhdrc C s. | d|||\}}| }|t||fS )aF Process an XOVER command (optional server extension) Arguments: - start: start of range - end: end of range - file: Filename string or file object to store the result in Returns: - resp: server response if successful - list: list of dicts containing the response fields z XOVER {0}-{1})r rt r rb )r startendr r r. rK r r r xover7 s z NNTP.xoverc C sx d| j v rdnd}t|ttfr |\}}|d||pd7 }n |dur)|d | }| ||\}}| }|t||fS )a Process an OVER command. If the command isn't supported, fall back to XOVER. Arguments: - message_spec: - either a message id, indicating the article to fetch information about - or a (start, end) tuple, indicating a range of article numbers; if end is None, information up to the newest message will be retrieved - or None, indicating the current article number must be used - file: Filename string or file object to store the result in Returns: - resp: server response if successful - list: list of dicts containing the response fields NOTE: the "message id" form isn't supported by XOVER OVERXOVERz {0}-{1}r9 Nr )r r; tupler rt r r rb ) r r r r r r r r. rK r r r overE s z NNTP.overc C sb | d}|dst|| }t|dkr t||d }t|dkr*t||t|dfS )zProcess the DATE command. Returns: - resp: server response if successful - date: datetime object DATE111rc rD N)r rV r rS rJ r rr )r r elemr) r r r r) ` s z NNTP.datec C s | |}|dst|t|ttfr| }|D ] }|ts)| dt }|dr2d| }| j | q| j d | j | S )N3r/ r s . )r rV r r; r- bytearray splitlinesendswithr rstripr r r r )r r fr rL r r r _postq s z NNTP._postc C r )zProcess a POST command. Arguments: - data: bytes object, iterable or file containing the article Returns: - resp: server response if successfulPOST)r0 )r datar r r post s z NNTP.postc C s | d||S )a Process an IHAVE command. Arguments: - message_id: message-id of the article - data: file containing the article Returns: - resp: server response if successful Note that if the server refuses the article an exception is raised.z IHAVE {0})r0 rt )r r7 r2 r r r ihave s z NNTP.ihavec C sB z| j r| j | ` W | j d S W | j d S | j w r )r r r} r r r r r s z NNTP._closec C s$ z | d}W | |S | w )zdProcess a QUIT command and close the socket. Returns: - resp: server response if successfulQUIT)r r )r r r r r r s z NNTP.quitc C s | j rtd|s|stdz |r,|s,dd l}| }|| j}|r,|d }|d }W n ty6 Y nw |s;d S | d| }|dr]|sMt|| d| }|ds]t |d | _ | | j ryd | j vr{| d | _ | d S d S d S ) NzAlready logged in.z7At least one of `user` and `usenetrc` must be specifiedr rc zauthinfo user 381zauthinfo pass 281r )r r netrcauthenticatorsr r r rV r r r r r r )r r r r r8 credentialsauthr r r r r sD z NNTP.loginc C sb z | d| _W d S ty Y d S ty0 } z|jdr$d| _n W Y d }~d S d }~ww )Nz mode reader480T)r r r r r rV r )r er r r r s zNNTP._setreadermodec C sz | j rtd| jrtd| d}|dr9| j t| j|| j | _| j d| _d| _ d| _ | dS t d) zzProcess a STARTTLS command. Arguments: - context: SSL context to use for the encrypted connection zTLS is already enabled.z+TLS cannot be started after authentication.STARTTLS382r TNzTLS failed to start.)r r r r rV r r r r} r r r r r )r r~ r r r r starttls s z NNTP.starttls)Tr )NNT):r r r r r NNTP_PORTr r r r r r r r r debugr r r r r r r r r r r r r r r r r r1 r r r r r r2 r r r r r r r! r% r) r0 r3 r4 r r r r _have_sslr@ r r r r r ( st #" . ) r c s8 e Zd Zedddddef fdd Z fddZ ZS )NNTP_SSLNFc s" || _ t ||||||| dS )zThis works identically to NNTP.__init__, except for the change in default port and the `ssl_context` argument for SSL connections. N) ssl_contextsuperr ) r r r r r rE r r r r r r r s zNNTP_SSL.__init__c s4 t |}z t|| j| j}W |S | r )rF r r rE r r )r r r} rG r r r s zNNTP_SSL._create_socket)r r r NNTP_SSL_PORTr r r __classcell__r r rG r rD s rD __main__zJ nntplib built-in demo - display the latest articles in a newsgroup)r z-gz--groupzgmane.comp.python.generalz3group to fetch messages from (default: %(default)s))defaultr z-sz--serverz news.gmane.ioz+NNTP server hostname (default: %(default)s)z-pz--portr z#NNTP port number (default: %s / %s))rK typer z-nz --nb-articles z2number of articles to fetch (default: %(default)s)z-Sz--ssl store_truezuse NNTP over SSL)actionrK r )r r r> Grouphaszarticles, rangetoc C s$ t | |kr| d |d d } | S )Nrd z...)rJ )slimr r r cut3 s rU rD r( <r' z{:7} {:20} {:42} ({}) * r )F)Ir r r collectionsri r rz ImportErrorrC email.headerr r: r __all__r r r r r r r r rA rH r rI rG r namedtupler0 r5 rQ rb rr rx r r rD r< r argparseArgumentParserparser add_argumentrT parse_argsr r serverrS r r r@ r1 r r r3 r2 rM r rU r nb_articlesr! overviewsartnumr% rS authorr' r. rt r r r r r <module> s A S