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text/plains; A server error occurred. Please contact the administrator.c C sZ y$| j || j| j| _| j W n0 y | j W n | j Y nX Y nX dS )zInvoke the applicationN)
setup_environr% start_responseresultfinish_response handle_errorclose)selfZ applicationr r r run s zBaseHandler.runc C s | j j }| _| j | j |d< | j |d< | j|d< | j|d< | j |d< | j |d< | j
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zBaseHandler.setup_environc
C sJ z:| j s| j r8x| jD ]}| j| q W | j W d| j X dS )a> Send any iterable data, then close self and the iterable
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'self.close()' once the response is finished.
N)result_is_filesendfiler2 writefinish_contentr5 )r6 datar r r r3 s zBaseHandler.finish_responsec C s
t | jS )z Return the URL scheme being used)r r% )r6 r r r r? s zBaseHandler.get_schemec
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r( Y n X |dkrFt| j| jd< dS dS )z@Compute Content-Length or switch to chunked encoding if possibler zContent-LengthN)lenr2 TypeErrorAttributeErrorNotImplementedErrorstr
bytes_sentheaders)r6 Zblocksr r r set_content_length s z BaseHandler.set_content_lengthc C s d| j kr| j dS )zqMake any necessary header changes or defaults
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zContent-LengthN)rR rS )r6 r r r cleanup_headers s
zBaseHandler.cleanup_headersc C s |r2z$| j r&|d |d j|d W dd}X n| jdk rDtd|| _| j|| _| j|d}t|dksvtd|dd j std
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S )z4'start_response()' callable as specified by PEP 3333r r NzHeaders already set!ZStatus z$Status must be at least 4 characters z(Status message must begin w/3-digit code z+Status message must have a space after codez Header namez Header valuez Hop-by-hop headers not allowed) headers_sentwith_tracebackrR AssertionErrorstatus
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zBaseHandler.start_responsec C s( t |tkr|S tdj|t|dS )zConvert/check value type.z!{0} must be of type str (got {1})N)typerP r[ formatrepr)r6 valuetitler r r r^ s z BaseHandler._convert_string_typec C s | j rx| j r| jd| j| jf jd d| jkrP| jdttj jd | j rd| jkr| jd| j jd n| jd| j jd dS ) z6Transmit version/status/date/server, via self._write()z HTTP/%s %s
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zBaseHandler.send_preamblec C sf t |tkstd| js$tdn,| js>t|| _| j n| jt|7 _| j| | j dS )z+'write()' callable as specified by PEP 3333z)write() argument must be a bytes instancez write() before start_response()N)
rc bytesr[ r\ rY rL rQ send_headersri _flush)r6 rK r r r rI s
zBaseHandler.writec C s dS )a Platform-specific file transmission
Override this method in subclasses to support platform-specific
file transmission. It is only called if the application's
return iterable ('self.result') is an instance of
'self.wsgi_file_wrapper'.
This method should return a true value if it was able to actually
transmit the wrapped file-like object using a platform-specific
approach. It should return a false value if normal iteration
should be used instead. An exception can be raised to indicate
that transmission was attempted, but failed.
NOTE: this method should call 'self.send_headers()' if
'self.headers_sent' is false and it is going to attempt direct
transmission of the file.
Fr )r6 r r r rH s zBaseHandler.sendfilec C s" | j s | jjdd | j n dS )z.Ensure headers and content have both been sentzContent-Length0N)rY rR rE rm )r6 r r r rJ 0 s
zBaseHandler.finish_contentc C sF zt | jdr| jj W dd | _ | _ | _| _d| _d| _X dS )zClose the iterable (if needed) and reset all instance vars
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r5 Nr F)hasattrr2 r5 rR r\ r% rQ rY )r6 r r r r5 : s zBaseHandler.closec C s: | j d| _| j s | j r6| j | jt| j dS )z1Transmit headers to the client, via self._write()TN)rT rY rC rh rk ri rl rR )r6 r r r rm G s
zBaseHandler.send_headersc C s | j }|dk ot| j|S )z@True if 'self.result' is an instance of 'self.wsgi_file_wrapper'N)rB
isinstancer2 )r6 wrapperr r r rG P s zBaseHandler.result_is_filec C s | j d j dkS )z,True if client can accept status and headersZSERVER_PROTOCOLzHTTP/0.9)r% upper)r6 r r r rh V s z BaseHandler.client_is_modernc C sJ z>ddl m} | j }||d |d |d | j| |j W dd}X dS )zLog the 'exc_info' tuple in the server log
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zBaseHandler.log_exceptionc C s2 | j tj | js.| j| j| j| _| j dS )z>Log current error, and send error output to client if possibleN) ry r r` rY error_outputr% r1 r2 r3 )r6 r r r r4 k s zBaseHandler.handle_errorc C s$ || j | jdd tj | jgS )aZ WSGI mini-app to create error output
By default, this just uses the 'error_status', 'error_headers',
and 'error_body' attributes to generate an output page. It can
be overridden in a subclass to dynamically generate diagnostics,
choose an appropriate message for the user's preferred language, etc.
Note, however, that it's not recommended from a security perspective to
spit out diagnostics to any old user; ideally, you should have to do
something special to enable diagnostic output, which is why we don't
include any here!
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zBaseHandler.error_outputc C s t dS )a Override in subclass to buffer data for send to client
It's okay if this method actually transmits the data; BaseHandler
just separates write and flush operations for greater efficiency
when the underlying system actually has such a distinction.
N)rO )r6 rK r r r ri s zBaseHandler._writec C s t dS )zOverride in subclass to force sending of recent '_write()' calls
It's okay if this method is a no-op (i.e., if '_write()' actually
sends the data.
N)rO )r6 r r r rn s zBaseHandler._flushc C s t dS )z4Override in subclass to return suitable 'wsgi.input'N)rO )r6 r r r r; s zBaseHandler.get_stdinc C s t dS )z5Override in subclass to return suitable 'wsgi.errors'N)rO )r6 r r r r< s zBaseHandler.get_stderrc C s t dS )z>Override in subclass to insert CGI variables in 'self.environ'N)rO )r6 r r r r: s zBaseHandler.add_cgi_vars)r r )r. r/ )N)2__name__
__module__ __qualname____doc__r= r@ rA r> rC rj rD r r8 r rB r r] rv r{ r| r} r\ r2 rY rR rQ r7 r0 r3 r? rS rT r1 r^ rk rI rH rJ r5 rm rG rh ry r4 rz ri rn r; r< r: r r r r r ^ sV
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Zdd Z dS )r aq Handler that's just initialized with streams, environment, etc.
This handler subclass is intended for synchronous HTTP/1.0 origin servers,
and handles sending the entire response output, given the correct inputs.
Usage::
handler = SimpleHandler(
inp,out,err,env, multithread=False, multiprocess=True
)
handler.run(app)TFc C s( || _ || _|| _|| _|| _|| _d S )N)stdinstdoutrx base_envr@ rA )r6 r r rx r% multithread multiprocessr r r __init__ s zSimpleHandler.__init__c C s | j S )N)r )r6 r r r r; s zSimpleHandler.get_stdinc C s | j S )N)rx )r6 r r r r< s zSimpleHandler.get_stderrc C s | j j| j d S )N)r% updater )r6 r r r r: s zSimpleHandler.add_cgi_varsc C sb | j j|}|d ks |t|kr$d S ddlm} |dt x"||d }|sNP | j j|}q<W d S )Nr )warnz9SimpleHandler.stdout.write() should not do partial writes)r rI rL warningsr DeprecationWarning)r6 rK r2 r r r r ri s zSimpleHandler._writec C s | j j | j j| _d S )N)r rw rn )r6 r r r rn s
zSimpleHandler._flushN)TF)
r~ r r r r r; r< r: ri rn r r r r r s
c @ s e Zd ZdZdZdS )r a CGI-like systems using input/output/error streams and environ mapping
Usage::
handler = BaseCGIHandler(inp,out,err,env)
handler.run(app)
This handler class is useful for gateway protocols like ReadyExec and
FastCGI, that have usable input/output/error streams and an environment
mapping. It's also the base class for CGIHandler, which just uses
sys.stdin, os.environ, and so on.
The constructor also takes keyword arguments 'multithread' and
'multiprocess' (defaulting to 'True' and 'False' respectively) to control
the configuration sent to the application. It sets 'origin_server' to
False (to enable CGI-like output), and assumes that 'wsgi.run_once' is
False.
FN)r~ r r r rC r r r r r s c @ s e Zd ZdZdZi Zdd ZdS )r
a CGI-based invocation via sys.stdin/stdout/stderr and os.environ
Usage::
CGIHandler().run(app)
The difference between this class and BaseCGIHandler is that it always
uses 'wsgi.run_once' of 'True', 'wsgi.multithread' of 'False', and
'wsgi.multiprocess' of 'True'. It does not take any initialization
parameters, but always uses 'sys.stdin', 'os.environ', and friends.
If you need to override any of these parameters, use BaseCGIHandler
instead.
Tc C s( t j| tjjtjjtjt ddd d S )NFT)r r )r r r r bufferr rx r )r6 r r r r s zCGIHandler.__init__N)r~ r r r r> r8 r r r r r r
s c @ s e Zd ZdZdZi Zdd ZdS )r a CGI-based invocation with workaround for IIS path bug
This handler should be used in preference to CGIHandler when deploying on
Microsoft IIS without having set the config allowPathInfo option (IIS>=7)
or metabase allowPathInfoForScriptMappings (IIS<7).
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