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Here is a simple "Hello, world" example app: .. testcode:: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") if __name__ == "__main__": application = tornado.web.Application([ (r"/", MainHandler), ]) application.listen(8888) tornado.ioloop.IOLoop.current().start() .. testoutput:: :hide: See the :doc:`guide` for additional information. Thread-safety notes ------------------- In general, methods on `RequestHandler` and elsewhere in Tornado are not thread-safe. In particular, methods such as `~RequestHandler.write()`, `~RequestHandler.finish()`, and `~RequestHandler.flush()` must only be called from the main thread. If you use multiple threads it is important to use `.IOLoop.add_callback` to transfer control back to the main thread before finishing the request, or to limit your use of other threads to `.IOLoop.run_in_executor` and ensure that your callbacks running in the executor do not refer to Tornado objects. � N)�isclass)�BytesIO)� urlencode)�Future�"future_set_result_unless_cancelled)�escape)�gen)� HTTPServer)�httputil)�iostream)�locale)� access_log�app_log�gen_log)�template)�utf8�_unicode)� AnyMatches�DefaultHostMatches� HostMatches�ReversibleRouter�Rule�ReversibleRuleRouter�URLSpec� _RuleList)� ObjectDict� unicode_type�_websocket_mask) �Dict�Any�Union�Optional� Awaitable�Tuple�List�Callable�Iterable� Generator�Type�cast�overload)� TracebackType)�Set� � c @ s e Zd ZdS )�_ArgDefaultMarkerN)�__name__� __module__� __qualname__� r3 r3 �{/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/tornado/web.pyr/ � s r/ c s� e Zd ZdZdZi Ze�� Ze � d�Z dZ dZ dZdZdejedd�� fdd � Zdd �d d �ZeZeeeef d �d d��Zeedd�dd�ZeZeZ eZ eZ eZ eZ eZ!e"e#d d �dd�Z$dd �dd�Z%dd �dd�Z&dd �dd�Z'dd �dd�Z(d�e)edd �d d �Z*e)d �d d �Z+ee,dd!�d"d#�Z-ee,dd!�d$d%�Z.edd&�d'd(�Z/e � d)�Z0e,ed*�d+d,�Z1e2d�eee3ed.�d/d0��Z4e2e5d-fee6e3ed.�d1d0��Z4e2d�ede3e"e d.�d2d0��Z4e5d-fee7dee6f e3e"e d.�d3d0�Z4d�ee3e8e d4�d5d6�Z9e5d-fee7dee6f e3e"e d.�d7d8�Z:d�ee3e8e d4�d9d:�Z;e5d-fee7dee6f e3e"e d.�d;d<�Z<d�ee3e8e d4�d=d>�Z=d�ee7dee6f eee8e> f e3e"e d?�d@dA�Z?d�eeee8e> f e3e8e dB�dCdD�Z@d�e>eedE�dFdG�ZAeeeeBjCjDf d �dHdI��ZCd�eee"e dJ�dKdL�ZEd�ee7ee>f ee7eFeGeHjHf ee)eddN�dOdP�ZId�eeeddQ�dRdS�ZJd�eeddT�dUdV�ZKd�ee7ee>f e)e)eddX�dYdZ�ZLd�ee7ee>f e)e>d[�d\d]�ZMd�eee)e)e"e> d_�d`da�ZNd�eee"e) d!�dbdc�ZOd�ee3e)ddd�dedf�ZPe7ee>eQf ddg�dhdi�ZReedjdk�dldm�ZSeTe edn�dodp�ZUeTe> e>dq�drds�ZVeTe edt�dudv�ZWeTe> e>dw�dxdy�ZXeee>dk�dzd{�ZYeeef d �d|d}�ZZee[j\d~�dd��Z]d�e3djd��d�d��Z^d�e7ee>eQf djdg�d�d��Z_e`jad �d�d��Zbdd �d�d��Zcd�e)edd��d�d��Zde)edd��d�d��Zeeefjgjhd �d�d���Zgegjiefjgjhdd*�d�d���Zge"efjgjh d �d�d��Zjd�eefjgjhd��d�d��Zkeed �d�d���Zleljiedd*�d�d���Zled �d�d��Zmed �d�d��Zne"e d �d�d��Zoee>d �d�d���ZpeGe"e) e>eFf d �d�d��ZqeeGe"e) e"e> e"eF f d��d�d��Zrdd �d�d��Zsed �d�d��Ztd�ee3eed��d�d��Zud�eedd��d�d��Zveeed��d�d��Zwe"e d �d�d��Zxdd �d�d��Zye3d �d�d��Zze8d� e>e>dd��d�d��Z{e>e"e#d dg�d�dZ|dd �d�dĄZ}ed �d�dƄZ~eddǜd�dɄZ�d�e"e e"e� dd˜d�d̈́Z�ee�d� e�d�ef dМd�d҄Z�e�d�ef e�d�ef dӜd�dՄZ�dd �d�dׄZ�� Z�S )��RequestHandleraF Base class for HTTP request handlers. Subclasses must define at least one of the methods defined in the "Entry points" section below. Applications should not construct `RequestHandler` objects directly and subclasses should not override ``__init__`` (override `~RequestHandler.initialize` instead). )�GET�HEAD�POST�DELETE�PATCH�PUT�OPTIONSz[\x00-\x08\x0e-\x1f]FN� Application)� application�request�kwargs�returnc s� t t� ��� |� _|� _d� _d� _d� _d � _t � fdd�|j � � D ��� _ t � |j�� j d< � j d � j d< � �� � jjd us�J �� jj�� j� � jf i |�� d S )NFTc 3 s | ]\}}|� � |�fV qd S �N)� _ui_method)�.0�n�m��selfr3 r4 � <genexpr>� s z*RequestHandler.__init__.<locals>.<genexpr>Z _tt_modules�modules)�superr5 �__init__r> r? �_headers_written� _finished� _auto_finish�_prepared_futurer � ui_methods�items�ui�_UIModuleNamespace� ui_modules�clear� connection�set_close_callback�on_connection_close� initialize)rH r> r? r@ �� __class__rG r4 rL � s$ � �zRequestHandler.__init__�rA c C s d S rB r3 rG r3 r3 r4 � _initialize� s zRequestHandler._initializec C s | j jS )z@An alias for `self.application.settings <Application.settings>`.)r> �settingsrG r3 r3 r4 r_ s zRequestHandler.settings��argsr@ rA c O s t d��d S )N� )� HTTPError�rH ra r@ r3 r3 r4 �_unimplemented_method s z$RequestHandler._unimplemented_methodc C s dS )a� Called at the beginning of a request before `get`/`post`/etc. Override this method to perform common initialization regardless of the request method. Asynchronous support: Use ``async def`` or decorate this method with `.gen.coroutine` to make it asynchronous. If this method returns an ``Awaitable`` execution will not proceed until the ``Awaitable`` is done. .. versionadded:: 3.1 Asynchronous support. Nr3 rG r3 r3 r4 �prepare s zRequestHandler.preparec C s dS )a Called after the end of a request. Override this method to perform cleanup, logging, etc. This method is a counterpart to `prepare`. ``on_finish`` may not produce any output, as it is called after the response has been sent to the client. Nr3 rG r3 r3 r4 � on_finish" s zRequestHandler.on_finishc C s8 t | j�r4| jj�� s4| jj�t�� � | jj�� dS )aF Called in async handlers if the client closed the connection. Override this to clean up resources associated with long-lived connections. Note that this method is called only if the connection was closed during asynchronous processing; if you need to do cleanup after every request override `on_finish` instead. Proxies may keep a connection open for a time (perhaps indefinitely) after the client has gone away, so this method may not be called promptly after the end user closes their connection. N) �_has_stream_request_bodyr\ r? � _body_future�doneZ set_exceptionr �StreamClosedError� exceptionrG r3 r3 r4 rY , s z"RequestHandler.on_connection_closec C sH t �dtj dt �t�� �d��| _| �� g | _d| _ t j d | _ dS )z1Resets all headers and content for this response.zTornadoServer/%sztext/html; charset=UTF-8)�Server� Content-Type�Date�� N) r � HTTPHeaders�tornado�version�format_timestamp�time�_headers�set_default_headers� _write_buffer� _status_code� responses�_reasonrG r3 r3 r4 rV ? s ��zRequestHandler.clearc C s dS )aB Override this to set HTTP headers at the beginning of the request. For example, this is the place to set a custom ``Server`` header. Note that setting such headers in the normal flow of request processing may not do what you want, since headers may be reset during error handling. Nr3 rG r3 r3 r4 rw M s z"RequestHandler.set_default_headers)� status_code�reasonrA c C s0 || _ |dur t�|�| _ntj�|d�| _dS )a� Sets the status code for our response. :arg int status_code: Response status code. :arg str reason: Human-readable reason phrase describing the status code. If ``None``, it will be filled in from `http.client.responses` or "Unknown". .. versionchanged:: 5.0 No longer validates that the response code is in `http.client.responses`. N�Unknown)ry r � native_strr{ r rz �get)rH r| r} r3 r3 r4 � set_statusW s zRequestHandler.set_statusc C s | j S )z)Returns the status code for our response.)ry rG r3 r3 r4 � get_statusj s zRequestHandler.get_status)�name�valuerA c C s | � |�| j|< dS )z�Sets the given response header name and value. All header values are converted to strings (`datetime` objects are formatted according to the HTTP specification for the ``Date`` header). N)�_convert_header_valuerv �rH r� r� r3 r3 r4 � set_headern s zRequestHandler.set_headerc C s | j �|| �|�� dS )z�Adds the given response header and value. Unlike `set_header`, `add_header` may be called multiple times to return multiple values for the same header. N)rv �addr� r� r3 r3 r4 � add_headerx s zRequestHandler.add_header)r� rA c C s || j v r| j |= dS )z�Clears an outgoing header, undoing a previous `set_header` call. Note that this method does not apply to multi-valued headers set by `add_header`. N)rv )rH r� r3 r3 r4 � clear_header� s zRequestHandler.clear_headerz [\x00-\x1f]�r� rA c C s� t |t�r|}nbt |t�r&|�d�}nLt |t�r<t�|�}n6t |tj�rPt|�S t |t j �rft � |�S t d| ��t j�|�r�td|��|S )N�latin1zUnsupported header value %rzUnsafe header value %r)� isinstance�str�bytes�decoder r r �numbers�Integral�datetimer rt � TypeErrorr5 �_INVALID_HEADER_CHAR_RE�search� ValueError)rH r� �retvalr3 r3 r4 r� � s z$RequestHandler._convert_header_valueT)r� �default�striprA c C s d S rB r3 �rH r� r� r� r3 r3 r4 � get_argument� s zRequestHandler.get_argumentc C s d S rB r3 r� r3 r3 r4 r� � s c C s d S rB r3 r� r3 r3 r4 r� � s c C s | � ||| jj|�S )ar Returns the value of the argument with the given name. If default is not provided, the argument is considered to be required, and we raise a `MissingArgumentError` if it is missing. If the argument appears in the request more than once, we return the last value. This method searches both the query and body arguments. )� _get_argumentr? � argumentsr� r3 r3 r4 r� � s )r� r� rA c C s t |t�sJ �| �|| jj|�S )z�Returns a list of the arguments with the given name. If the argument is not present, returns an empty list. This method searches both the query and body arguments. )r� �bool�_get_argumentsr? r� �rH r� r� r3 r3 r4 � get_arguments� s z RequestHandler.get_argumentsc C s | � ||| jj|�S )aj Returns the value of the argument with the given name from the request body. If default is not provided, the argument is considered to be required, and we raise a `MissingArgumentError` if it is missing. If the argument appears in the url more than once, we return the last value. .. versionadded:: 3.2 )r� r? �body_argumentsr� r3 r3 r4 �get_body_argument� s z RequestHandler.get_body_argumentc C s | � || jj|�S )z�Returns a list of the body arguments with the given name. If the argument is not present, returns an empty list. .. versionadded:: 3.2 )r� r? r� r� r3 r3 r4 �get_body_arguments� s z!RequestHandler.get_body_argumentsc C s | � ||| jj|�S )ar Returns the value of the argument with the given name from the request query string. If default is not provided, the argument is considered to be required, and we raise a `MissingArgumentError` if it is missing. If the argument appears in the url more than once, we return the last value. .. versionadded:: 3.2 )r� r? �query_argumentsr� r3 r3 r4 �get_query_argument� s z!RequestHandler.get_query_argumentc C s | � || jj|�S )z�Returns a list of the query arguments with the given name. If the argument is not present, returns an empty list. .. versionadded:: 3.2 )r� r? r� r� r3 r3 r4 �get_query_arguments s z"RequestHandler.get_query_arguments)r� r� �sourcer� rA c C s2 | j |||d�}|s*t|t�r&t|��|S |d S )N)r� ���)r� r� r/ �MissingArgumentError)rH r� r� r� r� ra r3 r3 r4 r� s z RequestHandler._get_argument)r� r� r� rA c C sV g }|� |g �D ]@}| j||d�}t|t�r:tj�d|�}|rF|�� }|�|� q|S )N�r� � ) r� �decode_argumentr� r r5 �_remove_control_chars_regex�subr� �append)rH r� r� r� �values�v�sr3 r3 r4 r� s z RequestHandler._get_arguments)r� r� rA c C s@ z t |�W S ty: tdd|p$d|dd� f ��Y n0 dS )a Decodes an argument from the request. The argument has been percent-decoded and is now a byte string. By default, this method decodes the argument as utf-8 and returns a unicode string, but this may be overridden in subclasses. This method is used as a filter for both `get_argument()` and for values extracted from the url and passed to `get()`/`post()`/etc. The name of the argument is provided if known, but may be None (e.g. for unnamed groups in the url regex). � zInvalid unicode in %s: %r�urlN�( )r �UnicodeDecodeErrorrc )rH r� r� r3 r3 r4 r� - s �z RequestHandler.decode_argumentc C s | j jS )zRAn alias for `self.request.cookies <.httputil.HTTPServerRequest.cookies>`.)r? �cookiesrG r3 r3 r4 r� A s zRequestHandler.cookies)r� r� rA c C s* | j jdur&|| j jv r&| j j| jS |S )a- Returns the value of the request cookie with the given name. If the named cookie is not present, returns ``default``. This method only returns cookies that were present in the request. It does not see the outgoing cookies set by `set_cookie` in this handler. N)r? r� r� )rH r� r� r3 r3 r4 � get_cookieG s zRequestHandler.get_cookie�/)r� r� �domain�expires�path� expires_daysr@ rA c K s� t �|�}t �|�}t�d|| �r4td||f ��t| d�sJtj�� | _ || j v r\| j |= || j |< | j | }|r|||d< |dur�|s�t j � � t j |d� }|r�t �|�|d< |r�||d< |�� D ]*\} } | d kr�d } | d v r�| s�q�| || < q�dS ) a1 Sets an outgoing cookie name/value with the given options. Newly-set cookies are not immediately visible via `get_cookie`; they are not present until the next request. expires may be a numeric timestamp as returned by `time.time`, a time tuple as returned by `time.gmtime`, or a `datetime.datetime` object. Additional keyword arguments are set on the cookies.Morsel directly. See https://docs.python.org/3/library/http.cookies.html#http.cookies.Morsel for available attributes. z [\x00-\x20]zInvalid cookie %r: %r� _new_cookier� N��daysr� r� �max_agezmax-age)�httponly�secure)r r �rer� r� �hasattr�httpr� � SimpleCookier� r� �utcnow� timedeltar rt rR ) rH r� r� r� r� r� r� r@ �morsel�kr� r3 r3 r4 � set_cookieT s0 zRequestHandler.set_cookie)r� r� r� rA c C s. t j �� t jdd� }| j|d|||d� dS )a� Deletes the cookie with the given name. Due to limitations of the cookie protocol, you must pass the same path and domain to clear a cookie as were used when that cookie was set (but there is no way to find out on the server side which values were used for a given cookie). Similar to `set_cookie`, the effect of this method will not be seen until the following request. im r� � )r� r� r� r� N)r� r� r� r� )rH r� r� r� r� r3 r3 r4 � clear_cookie� s zRequestHandler.clear_cookie)r� r� rA c C s" | j jD ]}| j|||d� qdS )aj Deletes all the cookies the user sent with this request. See `clear_cookie` for more information on the path and domain parameters. Similar to `set_cookie`, the effect of this method will not be seen until the following request. .. versionchanged:: 3.2 Added the ``path`` and ``domain`` parameters. )r� r� N)r? r� r� )rH r� r� r� r3 r3 r4 �clear_all_cookies� s z RequestHandler.clear_all_cookies� )r� r� r� rs r@ rA c K s( | j || j|||d�fd|i|�� dS )a� Signs and timestamps a cookie so it cannot be forged. You must specify the ``cookie_secret`` setting in your Application to use this method. It should be a long, random sequence of bytes to be used as the HMAC secret for the signature. To read a cookie set with this method, use `get_secure_cookie()`. Note that the ``expires_days`` parameter sets the lifetime of the cookie in the browser, but is independent of the ``max_age_days`` parameter to `get_secure_cookie`. Secure cookies may contain arbitrary byte values, not just unicode strings (unlike regular cookies) Similar to `set_cookie`, the effect of this method will not be seen until the following request. .. versionchanged:: 3.2.1 Added the ``version`` argument. Introduced cookie version 2 and made it the default. )rs r� N)r� �create_signed_value)rH r� r� r� rs r@ r3 r3 r4 �set_secure_cookie� s ���z RequestHandler.set_secure_cookie)r� r� rs rA c C s^ | � dd� | jjd }d}t|t�rL| jj�d�du r@td��| jjd }t|||||d�S )a� Signs and timestamps a string so it cannot be forged. Normally used via set_secure_cookie, but provided as a separate method for non-cookie uses. To decode a value not stored as a cookie use the optional value argument to get_secure_cookie. .. versionchanged:: 3.2.1 Added the ``version`` argument. Introduced cookie version 2 and made it the default. � cookie_secret�secure cookiesN� key_versionz5key_version setting must be used for secret_key dicts)rs r� )�require_settingr> r_ r� �dictr� � Exceptionr� )rH r� r� rs �secretr� r3 r3 r4 r� � s �z"RequestHandler.create_signed_value� )r� r� � max_age_days� min_versionrA c C s8 | � dd� |du r | �|�}t| jjd ||||d�S )a Returns the given signed cookie if it validates, or None. The decoded cookie value is returned as a byte string (unlike `get_cookie`). Similar to `get_cookie`, this method only returns cookies that were present in the request. It does not see outgoing cookies set by `set_secure_cookie` in this handler. .. versionchanged:: 3.2.1 Added the ``min_version`` argument. Introduced cookie version 2; both versions 1 and 2 are accepted by default. r� r� N)r� r� )r� r� �decode_signed_valuer> r_ )rH r� r� r� r� r3 r3 r4 �get_secure_cookie� s �z RequestHandler.get_secure_cookiec C s2 | � dd� |du r | �|�}|du r*dS t|�S )zgReturns the signing key version of the secure cookie. The version is returned as int. r� r� N)r� r� �get_signature_key_versionr� r3 r3 r4 � get_secure_cookie_key_version s z,RequestHandler.get_secure_cookie_key_version)r� � permanent�statusrA c C sn | j rtd��|du r$|r dnd}n$t|t�rDd| krBdksHn J �| �|� | �dt|�� | �� dS )a: Sends a redirect to the given (optionally relative) URL. If the ``status`` argument is specified, that value is used as the HTTP status code; otherwise either 301 (permanent) or 302 (temporary) is chosen based on the ``permanent`` argument. The default is 302 (temporary). z/Cannot redirect after headers have been writtenNi- i. i, i� ZLocation)rM r� r� �intr� r� r �finish)rH r� r� r� r3 r3 r4 �redirect s $ zRequestHandler.redirect)�chunkrA c C st | j rtd��t|tttf�s<d}t|t�r4|d7 }t|��t|t�r\t� |�}| � dd� t |�}| j � |� dS )a� Writes the given chunk to the output buffer. To write the output to the network, use the `flush()` method below. If the given chunk is a dictionary, we write it as JSON and set the Content-Type of the response to be ``application/json``. (if you want to send JSON as a different ``Content-Type``, call ``set_header`` *after* calling ``write()``). Note that lists are not converted to JSON because of a potential cross-site security vulnerability. All JSON output should be wrapped in a dictionary. More details at http://haacked.com/archive/2009/06/25/json-hijacking.aspx/ and https://github.com/facebook/tornado/issues/1009 z Cannot write() after finish()z5write() only accepts bytes, unicode, and dict objectsz|. Lists not accepted for security reasons; see http://www.tornadoweb.org/en/stable/web.html#tornado.web.RequestHandler.writern z application/json; charset=UTF-8N)rN � RuntimeErrorr� r� r r� �listr� r Z json_encoder� r rx r� )rH r� �messager3 r3 r4 �write) s � zRequestHandler.writez Future[None])� template_namer@ rA c K s� | j rtd��| j|fi |��}g }g }g }g }g }g } t| di ��� D ]�} | �� } | rf|�t| �� | �� } | r�t | t t f�r�|�t | �� n |� | � | �� } | r�|�t| �� | �� } | r�t | t t f�r�|�t | �� n |� | � | �� } | �r|�t| �� | �� }|rH| �t|�� qH|�r^| �|�}|�d�}|d|� t|� d ||d� }|�r�| �|�}|�d�}|d|� | d ||d� }|�r�| �|�}|�d�}|d|� t|� d ||d� }|�r| �|�}|�d�}|d|� | d ||d� }|�rF|�d�}|d|� d�|� d ||d� }| �r||�d�}|d|� d�| � d ||d� }| �|�S )a� Renders the template with the given arguments as the response. ``render()`` calls ``finish()``, so no other output methods can be called after it. Returns a `.Future` with the same semantics as the one returned by `finish`. Awaiting this `.Future` is optional. .. versionchanged:: 5.1 Now returns a `.Future` instead of ``None``. z Cannot render() after finish()�_active_moduless </body>N� s </head>� )rN r� � render_string�getattrr� �embedded_javascriptr� r �javascript_filesr� r r� r �extend� embedded_css� css_files� html_head� html_body�render_linked_js�rindex�render_embed_js�render_linked_css�index�render_embed_css�joinr� )rH r� r@ �html�js_embed�js_files� css_embedr� Z html_headsZ html_bodies�moduleZ embed_partZ file_partZ head_partZ body_part�jsZslocZjs_bytes�cssZhlocZ css_bytesr3 r3 r4 �renderI sn $ $ & &zRequestHandler.render)r rA c C sV g }t � }|D ]2}t|�s$| �|�}||vr|�|� |�|� qd�dd� |D ��S )z�Default method used to render the final js links for the rendered webpage. Override this method in a sub-classed controller to change the output. r� c s s | ]}d t �|� d V qdS )z <script src="z"" type="text/javascript"></script>N�r � xhtml_escape�rD �pr3 r3 r4 rI � s ���z2RequestHandler.render_linked_js.<locals>.<genexpr>��set� is_absolute� static_urlr� r� r )rH r �paths� unique_pathsr� r3 r3 r4 r� � s �z RequestHandler.render_linked_js)r rA c C s dd� |� d S )z�Default method used to render the final embedded js for the rendered webpage. Override this method in a sub-classed controller to change the output. s, <script type="text/javascript"> //<![CDATA[ r� s //]]> </script>�r )rH r r3 r3 r4 r� � s ���z RequestHandler.render_embed_js)r� rA c C sV g }t � }|D ]2}t|�s$| �|�}||vr|�|� |�|� qd�dd� |D ��S )z�Default method used to render the final css links for the rendered webpage. Override this method in a sub-classed controller to change the output. r� c s s | ]}d t �|� d V qdS )z <link href="z$" type="text/css" rel="stylesheet"/>Nr r r3 r3 r4 rI � s �z3RequestHandler.render_linked_css.<locals>.<genexpr>r )rH r� r r r� r3 r3 r4 r� � s �z RequestHandler.render_linked_css)r rA c C s dd� |� d S )z�Default method used to render the final embedded css for the rendered webpage. Override this method in a sub-classed controller to change the output. s <style type="text/css"> r� s </style>r )rH r r3 r3 r4 r� � s z RequestHandler.render_embed_cssc K s� | � � }|sRt�d�}|jj}|jj|kr2|j}q |jjdusBJ �tj�|jj�}t j �: |t j vrz| � |�}|t j |< n t j | }W d � n1 s�0 Y |� |�}| �� }|�|� |jf i |��S )z�Generate the given template with the given arguments. We return the generated byte string (in utf8). To generate and write a template as a response, use render() above. r N)�get_template_path�sys� _getframe�f_code� co_filename�f_back�osr� �dirnamer5 �_template_loader_lock�_template_loaders�create_template_loader�load�get_template_namespace�update�generate) rH r� r@ � template_path�frameZweb_file�loader�t� namespacer3 r3 r4 r� � s" ( z RequestHandler.render_stringc C s> t | | j| j| j| jj| jj| j| j| jd� }|� | j � |S )aB Returns a dictionary to be used as the default template namespace. May be overridden by subclasses to add or modify values. The results of this method will be combined with additional defaults in the `tornado.template` module and keyword arguments to `render` or `render_string`. ) �handlerr? � current_userr �_�pgettextr �xsrf_form_html� reverse_url) r� r? r) r � translater+ r r, r- r! rS )rH r' r3 r3 r4 r � s � z%RequestHandler.get_template_namespace)r# rA c C sV | j j}d|v r|d S i }d|v r0|d |d< d|v rD|d |d< tj|fi |��S )a] Returns a new template loader for the given path. May be overridden by subclasses. By default returns a directory-based loader on the given path, using the ``autoescape`` and ``template_whitespace`` application settings. If a ``template_loader`` application setting is supplied, uses that instead. Ztemplate_loaderZ autoescapeZtemplate_whitespace� whitespace)r> r_ r �Loader)rH r# r_ r@ r3 r3 r4 r s z%RequestHandler.create_template_loader)�include_footersrA c C s | j jdusJ �d�| j�}g | _| js�d| _| jD ].}|dusDJ �|�| j| j||�\| _| _}q4| j j dkrtd}t | d�r�| j � � D ]}| � d|�d�� q�t�d| j| j�}| j j�|| j|�S | jD ]}|�||�}q�| j j dkr�| j j�|�S t� }|�d� |S dS )aP Flushes the current output buffer to the network. The ``callback`` argument, if given, can be used for flow control: it will be run when all flushed data has been written to the socket. Note that only one flush callback can be outstanding at a time; if another flush occurs before the previous flush's callback has been run, the previous callback will be discarded. .. versionchanged:: 4.0 Now returns a `.Future` if no callback is given. .. versionchanged:: 6.0 The ``callback`` argument was removed. Nr� Tr7 r� z Set-Cookier� )r? rW r rx rM � _transforms�transform_first_chunkry rv �methodr� r� r� r� � OutputStringr �ResponseStartLiner{ Z write_headers�transform_chunkr� r � set_result)rH r1 r� Z transform�cookie� start_line�futurer3 r3 r4 �flush s> ��� � zRequestHandler.flushc C s$ | j rtd��|dur | �|� | js�| jdkrf| jjdv rfd| jvrf| �� | � � rfg | _ | � d� | jdv s�| jdkr�| jdk r�| j r�J d | j ��| � � n*d | jvr�t d d � | j D ��}| �d |� | jjdus�J �| jj�d� | jd d�}| jj�� | �� d | _ | �� | �� |S )aD Finishes this response, ending the HTTP request. Passing a ``chunk`` to ``finish()`` is equivalent to passing that chunk to ``write()`` and then calling ``finish()`` with no arguments. Returns a `.Future` which may optionally be awaited to track the sending of the response to the client. This `.Future` resolves when all the response data has been sent, and raises an error if the connection is closed before all data can be sent. .. versionchanged:: 5.1 Now returns a `.Future` instead of ``None``. zfinish() called twiceNrp �r6 r7 �Etag�0 )�� r? �d zCannot send body with %s�Content-Lengthc s s | ]}t |�V qd S rB )�len)rD �partr3 r3 r4 rI | r� z(RequestHandler.finish.<locals>.<genexpr>T)r1 )rN r� r� rM ry r? r4 rv �set_etag_header�check_etag_headerrx r� �_clear_headers_for_304�sumr� rW rX r< r� �_logrg � _break_cycles)rH r� �content_lengthr; r3 r3 r4 r� S sH � �� ��� zRequestHandler.finishc C s d| _ | jj�� S )aN Take control of the underlying stream. Returns the underlying `.IOStream` object and stops all further HTTP processing. Intended for implementing protocols like websockets that tunnel over an HTTP handshake. This method is only supported when HTTP/1.1 is used. .. versionadded:: 5.1 T)rN r? rW �detachrG r3 r3 r4 rL � s zRequestHandler.detachc C s d | _ d S rB )rS rG r3 r3 r4 rJ � s z RequestHandler._break_cycles�� )r| r@ rA c K s� | j rHt�d� | jsDz | �� W n tyB tjddd� Y n0 dS | �� |�d�}d|v r�|d d }t|t �r�|j r�|j }| j ||d � z| j |fi |�� W n ty� t jd dd� Y n0 | js�| �� dS ) a� Sends the given HTTP error code to the browser. If `flush()` has already been called, it is not possible to send an error, so this method will simply terminate the response. If output has been written but not yet flushed, it will be discarded and replaced with the error page. Override `write_error()` to customize the error page that is returned. Additional keyword arguments are passed through to `write_error`. z0Cannot send error response after headers writtenz Failed to flush partial responseT��exc_infoNr} rO r- )r} z!Uncaught exception in write_error)rM r �errorrN r� r� rV r� r� rc r} r� � write_errorr )rH r| r@ r} rl r3 r3 r4 � send_error� s* zRequestHandler.send_errorc K sb | j �d�rHd|v rH| �dd� tj|d � D ]}| �|� q.| �� n| �d|| jd� � dS )a� Override to implement custom error pages. ``write_error`` may call `write`, `render`, `set_header`, etc to produce output as usual. If this error was caused by an uncaught exception (including HTTPError), an ``exc_info`` triple will be available as ``kwargs["exc_info"]``. Note that this exception may not be the "current" exception for purposes of methods like ``sys.exc_info()`` or ``traceback.format_exc``. �serve_tracebackrO rn � text/plainzS<html><title>%(code)d: %(message)s</title><body>%(code)d: %(message)s</body></html>)�coder� N)r_ r� r� � traceback�format_exceptionr� r� r{ )rH r| r@ �liner3 r3 r4 rQ � s ��zRequestHandler.write_errorc C s< t | d�s6| �� }|dur"|| _n| �� | _| js6J �| jS )a^ The locale for the current session. Determined by either `get_user_locale`, which you can override to set the locale based on, e.g., a user preference stored in a database, or `get_browser_locale`, which uses the ``Accept-Language`` header. .. versionchanged: 4.1 Added a property setter. �_localeN)r� �get_user_localerY �get_browser_locale)rH �locr3 r3 r4 r � s zRequestHandler.localec C s || _ d S rB )rY �rH r� r3 r3 r4 r � s c C s dS )a Override to determine the locale from the authenticated user. If None is returned, we fall back to `get_browser_locale()`. This method should return a `tornado.locale.Locale` object, most likely obtained via a call like ``tornado.locale.get("en")`` Nr3 rG r3 r3 r4 rZ � s z RequestHandler.get_user_locale�en_US)r� rA c C s� d| j jv r�| j jd �d�}g }|D ]x}|�� �d�}t|�dkr�|d �d�r�zt|d dd� �}W q� ttfy� d}Y q�0 nd }|� |d |f� q&|r�|j d d � d d� dd� |D �}t j |� S t � |�S )z�Determines the user's locale from ``Accept-Language`` header. See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4 zAccept-Language�,�;r- zq=r. Ng g �?r c S s | d S )Nr- r3 )�pairr3 r3 r4 �<lambda> r� z3RequestHandler.get_browser_locale.<locals>.<lambda>T)�key�reversec S s g | ] }|d �qS )r r3 )rD �lr3 r3 r4 � <listcomp> r� z5RequestHandler.get_browser_locale.<locals>.<listcomp>) r? �headers�splitr� rC � startswith�floatr� r� r� �sortr r� )rH r� � languagesZlocales�language�partsZscore�codesr3 r3 r4 r[ s" z!RequestHandler.get_browser_localec C s t | d�s| �� | _| jS )a� The authenticated user for this request. This is set in one of two ways: * A subclass may override `get_current_user()`, which will be called automatically the first time ``self.current_user`` is accessed. `get_current_user()` will only be called once per request, and is cached for future access:: def get_current_user(self): user_cookie = self.get_secure_cookie("user") if user_cookie: return json.loads(user_cookie) return None * It may be set as a normal variable, typically from an overridden `prepare()`:: @gen.coroutine def prepare(self): user_id_cookie = self.get_secure_cookie("user_id") if user_id_cookie: self.current_user = yield load_user(user_id_cookie) Note that `prepare()` may be a coroutine while `get_current_user()` may not, so the latter form is necessary if loading the user requires asynchronous operations. The user object may be any type of the application's choosing. � _current_user)r� �get_current_userrp rG r3 r3 r4 r) s zRequestHandler.current_userc C s || _ d S rB )rp r] r3 r3 r4 r) @ s c C s dS )zrOverride to determine the current user from, e.g., a cookie. This method may not be a coroutine. Nr3 rG r3 r3 r4 rq D s z RequestHandler.get_current_userc C s | � dd� | jjd S )z�Override to customize the login URL based on the request. By default, we use the ``login_url`` application setting. Z login_urlz@tornado.web.authenticated)r� r> r_ rG r3 r3 r4 � get_login_urlK s z RequestHandler.get_login_urlc C s | j j�d�S )z�Override to customize template path for each handler. By default, we use the ``template_path`` application setting. Return None to load templates relative to the calling file. r# )r> r_ r� rG r3 r3 r4 r S s z RequestHandler.get_template_pathc C s� t | d�s�| �� \}}}| j�dd�}| j�di �}|dkrJt�|�| _nP|dkr�t�d�}d� dt�|�t�t ||��t t t |���g�| _n td |��|d u r�| jr�d |vr�d |d < | jd | jfi |�� | jS )a� The XSRF-prevention token for the current user/session. To prevent cross-site request forgery, we set an '_xsrf' cookie and include the same '_xsrf' value as an argument with all POST requests. If the two do not match, we reject the form submission as a potential forgery. See http://en.wikipedia.org/wiki/Cross-site_request_forgery This property is of type `bytes`, but it contains only ASCII characters. If a character string is required, there is no need to base64-encode it; just decode the byte string as UTF-8. .. versionchanged:: 3.2.2 The xsrf token will now be have a random mask applied in every request, which makes it safe to include the token in pages that are compressed. See http://breachattack.com for more information on the issue fixed by this change. Old (version 1) cookies will be converted to version 2 when this method is called unless the ``xsrf_cookie_version`` `Application` setting is set to 1. .. versionchanged:: 4.3 The ``xsrf_cookie_kwargs`` `Application` setting may be used to supply additional cookie options (which will be passed directly to `set_cookie`). For example, ``xsrf_cookie_kwargs=dict(httponly=True, secure=True)`` will set the ``secure`` and ``httponly`` flags on the ``_xsrf`` cookie. � _xsrf_tokenZxsrf_cookie_versionr. Zxsrf_cookie_kwargsr- � � |� 2z unknown xsrf cookie version %dNr� r� �_xsrf)r� �_get_raw_xsrf_tokenr_ r� �binascii�b2a_hexrs r �urandomr r r r� r� r� r) r� )rH rs �token� timestampZoutput_versionZ cookie_kwargs�maskr3 r3 r4 � xsrf_token[ s* ! �� zRequestHandler.xsrf_tokenc C s| t | d�sv| �d�}|r*| �|�\}}}n d\}}}|du rRd}t�d�}t�� }|dus^J �|dusjJ �|||f| _| jS )a� Read or generate the xsrf token in its raw form. The raw_xsrf_token is a tuple containing: * version: the version of the cookie from which this token was read, or None if we generated a new token in this request. * token: the raw token data; random (non-ascii) bytes. * timestamp: the time this token was generated (will not be accurate for version 1 cookies) �_raw_xsrf_tokenrw �NNNN� )r� r� �_decode_xsrf_tokenr r{ ru r� )rH r9 rs r| r} r3 r3 r4 rx � s z"RequestHandler._get_raw_xsrf_token)r9 rA c C s� z�t �t|��}|r|t|�d��}|dkrr|�d�\}}}}t�t|��}t|t�t|���} t|�} || | fW S t d��nPd}zt�t|��} W n tj t fy� t|�} Y n0 tt � � �} || | fW S W n" t y� t jddd� Y dS 0 d S ) z_Convert a cookie string into a the tuple form returned by _get_raw_xsrf_token. r- r. �|zUnknown xsrf cookie versionz(Uncaught exception in _decode_xsrf_tokenTrN r� N)�_signed_value_version_re�matchr r� �grouprh ry �a2b_hexr r� �Errorr� ru r �debug) rH r9 rF rs r* Zmask_strZ masked_tokenZ timestamp_strr~ r| r} r3 r3 r4 r� � s* z!RequestHandler._decode_xsrf_tokenc C s� | � dd�p&| jj�d�p&| jj�d�}|s6tdd��| �|�\}}}| �� \}}}|sbtdd��t�t |�t |��s�tdd��dS ) a� Verifies that the ``_xsrf`` cookie matches the ``_xsrf`` argument. To prevent cross-site request forgery, we set an ``_xsrf`` cookie and include the same value as a non-cookie field with all ``POST`` requests. If the two do not match, we reject the form submission as a potential forgery. The ``_xsrf`` value may be set as either a form field named ``_xsrf`` or in a custom HTTP header named ``X-XSRFToken`` or ``X-CSRFToken`` (the latter is accepted for compatibility with Django). See http://en.wikipedia.org/wiki/Cross-site_request_forgery .. versionchanged:: 3.2.2 Added support for cookie version 2. Both versions 1 and 2 are supported. rw Nz X-Xsrftokenz X-Csrftoken� z"'_xsrf' argument missing from POSTz#'_xsrf' argument has invalid formatz(XSRF cookie does not match POST argument) r� r? rg r� rc r� rx �hmac�compare_digestr )rH r| r* Zexpected_tokenr3 r3 r4 �check_xsrf_cookie� s � � z RequestHandler.check_xsrf_cookiec C s dt �| j� d S )a� An HTML ``<input/>`` element to be included with all POST forms. It defines the ``_xsrf`` input value, which we check on all POST requests to prevent cross-site request forgery. If you have set the ``xsrf_cookies`` application setting, you must include this HTML within all of your HTML forms. In a template, this method should be called with ``{% module xsrf_form_html() %}`` See `check_xsrf_cookie()` above for more information. z)<input type="hidden" name="_xsrf" value="z"/>)r r r rG r3 r3 r4 r, � s ���z RequestHandler.xsrf_form_html)r� � include_hostr@ rA c K sf | � dd� | j�dt�j}|du r0t| dd�}|rJ| jjd | jj }nd}||| j|fi |�� S ) a� Returns a static URL for the given relative static file path. This method requires you set the ``static_path`` setting in your application (which specifies the root directory of your static files). This method returns a versioned url (by default appending ``?v=<signature>``), which allows the static files to be cached indefinitely. This can be disabled by passing ``include_version=False`` (in the default implementation; other static file implementations are not required to support this, but they may support other options). By default this method returns URLs relative to the current host, but if ``include_host`` is true the URL returned will be absolute. If this handler has an ``include_host`` attribute, that value will be used as the default for all `static_url` calls that do not pass ``include_host`` as a keyword argument. � static_pathr �static_handler_classNr� Fz://r� ) r� r_ r� �StaticFileHandler�make_static_urlr� r? �protocol�host)rH r� r� r@ �get_url�baser3 r3 r4 r s � zRequestHandler.static_url� this feature)r� �featurerA c C s" | j j�|�s td||f ��dS )z<Raises an exception if the given app setting is not defined.z>You must define the '%s' setting in your application to use %sN)r> r_ r� r� )rH r� r� r3 r3 r4 r� / s ��z RequestHandler.require_setting�r� ra rA c G s | j j|g|�R � S )z$Alias for `Application.reverse_url`.)r> r- )rH r� ra r3 r3 r4 r- 7 s zRequestHandler.reverse_urlc C s* t �� }| jD ]}|�|� qd|�� S )a Computes the etag header to be used for this request. By default uses a hash of the content written so far. May be overridden to provide custom etag implementations, or may return None to disable tornado's default etag support. �"%s")�hashlib�sha1rx r! � hexdigest)rH �hasherrD r3 r3 r4 � compute_etag; s zRequestHandler.compute_etagc C s | � � }|dur | �d|� dS )z�Sets the response's Etag header using ``self.compute_etag()``. Note: no header will be set if ``compute_etag()`` returns ``None``. This method is called automatically when the request is finished. Nr> )r� r� )rH �etagr3 r3 r4 rE H s z RequestHandler.set_etag_headerc C s� t | j�dd��}t�dt | jj�dd���}|r6|s:dS d}|d dkrPd}n2ttd �d d �}|D ] }||�||�krdd} q�qd|S ) a� Checks the ``Etag`` header against requests's ``If-None-Match``. Returns ``True`` if the request's Etag matches and a 304 should be returned. For example:: self.set_etag_header() if self.check_etag_header(): self.set_status(304) return This method is called automatically when the request is finished, but may be called earlier for applications that override `compute_etag` and want to do an early check for ``If-None-Match`` before completing the request. The ``Etag`` header should be set (perhaps with `set_etag_header`) before calling this method. r> r� s \*|(?:W/)?"[^"]*"� If-None-MatchFr � *T)�xrA c S s | � d�r| dd � S | S )Ns W/r. �ri )r� r3 r3 r4 �valr s z-RequestHandler.check_etag_header.<locals>.val)r rv r� r� �findallr? rg r� )rH Z computed_etagZetagsr� r� r� r3 r3 r4 rF S s � z RequestHandler.check_etag_header�OutputTransform)� transformsra r@ rA c � s� |� _ �z.� jj� jvr td��� fdd�|D �� _t� fdd�|�� D ��� _� jjdvrr� j j � d�rr� � � � � � }|dur�|I dH }� jdur�t� jd� � jr�W dS t� j�r�z� jjI dH W n tjy� Y W dS 0 t� � jj�� �}|� ji � j��}|du�r |I dH }� j�r4� j�s4� �� W n� t�y� } zrz:z� �|� W n" t�yz t j d d d � Y n0 W d}nd}0 � jdu�r�� j� � �s�� j� d� W Y d}~n d}~0 0 dS ) z7Executes this request with the given output transforms.rb c s g | ]}� � |��qS r3 �r� )rD �argrG r3 r4 rf � r� z+RequestHandler._execute.<locals>.<listcomp>c 3 s$ | ] \}}|� j ||d �fV qdS )r� Nr� )rD r� r� rG r3 r4 rI � s z*RequestHandler._execute.<locals>.<genexpr>)r6 r7 r< Z xsrf_cookiesNz Exception in exception handlerTrN ) r2 r? r4 �SUPPORTED_METHODSrc � path_argsr� rR � path_kwargsr> r_ r� r� rf rP r rN rh r\ ri r rk r� �lowerrO r� r� �_handle_request_exceptionr rP rj r8 )rH r� ra r@ �resultr4 �er3 rG r4 �_execute{ sL � � zRequestHandler._executec C s t � �dS )z�Implement this method to handle streamed request data. Requires the `.stream_request_body` decorator. May be a coroutine for flow control. N��NotImplementedError)rH r� r3 r3 r4 � data_received� s z RequestHandler.data_receivedc C s | j �| � dS )z�Logs the current request. Sort of deprecated since this functionality was moved to the Application, but left in place for the benefit of existing apps that have overridden this method. N)r> � log_requestrG r3 r3 r4 rI � s zRequestHandler._logc C s d| j j| j j| j jf S )Nz %s %s (%s))r? r4 �uriZ remote_iprG r3 r3 r4 �_request_summary� s �z RequestHandler._request_summary)r� rA c C s� t |t�r | js | j|j� d S z| jt�� � W n tyR t j ddd� Y n0 | jr^d S t |t �r~| j |j t�� d� n| j dt�� d� d S )NzError in exception loggerTrN rM )r� �FinishrN r� ra � log_exceptionr rO r� r rP rc rR r| )rH r� r3 r3 r4 r� � s z(RequestHandler._handle_request_exceptionz Optional[Type[BaseException]])�typr� �tbrA c C sh t |t�rF|jrdd|j }|j| �� gt|j� }tj|g|�R � n t j d| �� | j |||fd� dS )aK Override to customize logging of uncaught exceptions. By default logs instances of `HTTPError` as warnings without stack traces (on the ``tornado.general`` logger), and all other exceptions as errors with stack traces (on the ``tornado.application`` logger). .. versionadded:: 3.1 z%d %s: zUncaught exception %s %rrN N) r� rc � log_messager| r� r� ra r �warningr rP r? )rH r� r� r� �formatra r3 r3 r4 r� � s �z RequestHandler.log_exception�UIModule.)r� r rA c s t d�� ��fdd� }|S )Nr] c sB t �d�si �_��jvr(� ���j�< �j� j| i |��}|S )Nr� )r� r� r )ra r@ �rendered�r r� rH r3 r4 r s z)RequestHandler._ui_module.<locals>.render)r� )rH r� r r r3 r� r4 � _ui_module s zRequestHandler._ui_module�r4 rA c s � �fdd�S )Nc s � �g| �R i |��S rB r3 )ra r@ �r4 rH r3 r4 rb r� z+RequestHandler._ui_method.<locals>.<lambda>r3 )rH r4 r3 r� r4 rC s zRequestHandler._ui_methodc C s g d�}|D ]}| � |� q d S )N)ZAllow�Content-EncodingzContent-LanguagerB z Content-MD5� Content-Rangern � Last-Modified)r� )rH rg �hr3 r3 r4 rG s z%RequestHandler._clear_headers_for_304)N)T)T)T)T)T)T)T)N)N)NNr� N)r� N)r� N)r� N)N)Nr� N)N)FN)F)N)rM )r^ )N)r� )�r0 r1 r2 �__doc__r� r � threading�Lockr r� �compiler� �_stream_request_bodyr2 r� r� r �HTTPServerRequestr rL r^ rZ �propertyr r� r_ re �headr� �post�delete�patch�put�optionsr! r" rf rg rY rV rw r� r� r� � _HeaderTypesr� r� r� r� r� r* r� r� � _ARG_DEFAULTr/ r r$ r� r� r� r� r� r� r� r� r� r� r� �Morselr� rj r# r� r� r� r� r� r� r� r� r� r� r� r r& r� r� r� r� r� r r Z BaseLoaderr r< r� r ZIOStreamrL rJ rR rQ rr r ZLocale�setterrZ r[ r) rq rr r r rx r� r� r, r r� r- r� rE rF r� r� rI r� � BaseExceptionr� r+ r� r( r% r� rC rG � __classcell__r3 r3 r[ r4 r5 � s� � �� ��� � � � � � � � �� � � 7 � � ' �� �� ! �� K 8 ;& #8 � $&$ ) � = � r5 )�clsrA c C s t | t�std| ��d| _| S )a Apply to `RequestHandler` subclasses to enable streaming body support. This decorator implies the following changes: * `.HTTPServerRequest.body` is undefined, and body arguments will not be included in `RequestHandler.get_argument`. * `RequestHandler.prepare` is called when the request headers have been read instead of after the entire body has been read. * The subclass must define a method ``data_received(self, data):``, which will be called zero or more times as data is available. Note that if the request has an empty body, ``data_received`` may not be called. * ``prepare`` and ``data_received`` may return Futures (such as via ``@gen.coroutine``, in which case the next method will not be called until those futures have completed. * The regular HTTP method (``post``, ``put``, etc) will be called after the entire body has been read. See the `file receiver demo <https://github.com/tornadoweb/tornado/tree/master/demos/file_upload/>`_ for example usage. �+expected subclass of RequestHandler, got %rT�� issubclassr5 r� r� �r� r3 r3 r4 �stream_request_body$ s r� c C s t | t�std| ��| jS )Nr� r� r� r3 r3 r4 rh ? s rh .r� c s* t �� �tttd d�� fdd� �}|S )a# Use this decorator to remove trailing slashes from the request path. For example, a request to ``/foo/`` would redirect to ``/foo`` with this decorator. Your request handler mapping should use a regular expression like ``r'/foo/*'`` in conjunction with using the decorator. N�rH rA c sv | j j�d�r`| j jdv rX| j j�d�}|r`| j jrD|d| j j 7 }| j|dd� d S ntd��� | g|�R i |��S �Nr� r= �?T�r� � )r? r� �endswithr4 �rstrip�queryr� rc �rH ra r@ r� �r4 r3 r4 �wrapperO s z removeslash.<locals>.wrapper�� functools�wrapsr5 r! r" �r4 r� r3 r� r4 � removeslashE s �r� c s* t �� �tttd d�� fdd� �}|S )a& Use this decorator to add a missing trailing slash to the request path. For example, a request to ``/foo`` would redirect to ``/foo/`` with this decorator. Your request handler mapping should use a regular expression like ``r'/foo/?'`` in conjunction with using the decorator. Nr� c sn | j j�d�sX| j jdv rP| j jd }| j jr>|d| j j 7 }| j|dd� d S td��� | g|�R i |��S r� )r? r� r� r4 r� r� rc r� r� r3 r4 r� l s zaddslash.<locals>.wrapperr� r� r3 r� r4 �addslashb s � r� c s` e Zd ZdZd dedd�� fdd� Zeed�� fdd � Zee j ee e j d �� fd d � Z � ZS )�_ApplicationRoutera� Routing implementation used internally by `Application`. Provides a binding between `Application` and `RequestHandler`. This implementation extends `~.routing.ReversibleRuleRouter` in a couple of ways: * it allows to use `RequestHandler` subclasses as `~.routing.Rule` target and * it allows to use a list/tuple of rules as `~.routing.Rule` target. ``process_rule`` implementation will substitute this list with an appropriate `_ApplicationRouter` instance. Nr= )r> �rulesrA c s( t |t�sJ �|| _tt| ��|� d S rB )r� r= r> rK r� rL )rH r> r� r[ r3 r4 rL � s z_ApplicationRouter.__init__)�rulerA c s4 t t| ��|�}t|jttf�r0t| j|j�|_|S rB )rK r� � process_ruler� �targetr� �tupler> )rH r� r[ r3 r4 r� � s �z _ApplicationRouter.process_rule)r� r? � target_paramsrA c sB t |�r(t|t�r(| jj||fi |��S tt| �j||fi |��S rB )r r� r5 r> �get_handler_delegaterK r� �get_target_delegate)rH r� r? r� r[ r3 r4 r� � s �� ��z&_ApplicationRouter.get_target_delegate)N)r0 r1 r2 r� r rL r r� r r r� r! �HTTPMessageDelegater� r� r3 r3 r[ r4 r� } s �r� c @ s e Zd ZdZd'eeeed edd�dd�Z d(e eee d�d d �Z eedd �d d �Z ed dd�dd�Zedd�dd�Zedd�dd�Zejeed d�dd�Zejedd�d d �Zd)ejee eeef ee eeef dd �d d �Zeeed!�d"d#�Zedd$�d%d&�Z dS )*r= a� A collection of request handlers that make up a web application. Instances of this class are callable and can be passed directly to HTTPServer to serve the application:: application = web.Application([ (r"/", MainPageHandler), ]) http_server = httpserver.HTTPServer(application) http_server.listen(8080) ioloop.IOLoop.current().start() The constructor for this class takes in a list of `~.routing.Rule` objects or tuples of values corresponding to the arguments of `~.routing.Rule` constructor: ``(matcher, target, [target_kwargs], [name])``, the values in square brackets being optional. The default matcher is `~.routing.PathMatches`, so ``(regexp, target)`` tuples can also be used instead of ``(PathMatches(regexp), target)``. A common routing target is a `RequestHandler` subclass, but you can also use lists of rules as a target, which create a nested routing configuration:: application = web.Application([ (HostMatches("example.com"), [ (r"/", MainPageHandler), (r"/feed", FeedHandler), ]), ]) In addition to this you can use nested `~.routing.Router` instances, `~.httputil.HTTPMessageDelegate` subclasses and callables as routing targets (see `~.routing` module docs for more information). When we receive requests, we iterate over the list in order and instantiate an instance of the first request class whose regexp matches the request path. The request class can be specified as either a class object or a (fully-qualified) name. A dictionary may be passed as the third element (``target_kwargs``) of the tuple, which will be used as keyword arguments to the handler's constructor and `~RequestHandler.initialize` method. This pattern is used for the `StaticFileHandler` in this example (note that a `StaticFileHandler` can be installed automatically with the static_path setting described below):: application = web.Application([ (r"/static/(.*)", web.StaticFileHandler, {"path": "/var/www"}), ]) We support virtual hosts with the `add_handlers` method, which takes in a host regular expression as the first argument:: application.add_handlers(r"www\.myhost\.com", [ (r"/article/([0-9]+)", ArticleHandler), ]) If there's no match for the current request's host, then ``default_host`` parameter value is matched against host regular expressions. .. warning:: Applications that do not use TLS may be vulnerable to :ref:`DNS rebinding <dnsrebinding>` attacks. This attack is especially relevant to applications that only listen on ``127.0.0.1`` or other private networks. Appropriate host patterns must be used (instead of the default of ``r'.*'``) to prevent this risk. The ``default_host`` argument must not be used in applications that may be vulnerable to DNS rebinding. You can serve static files by sending the ``static_path`` setting as a keyword argument. We will serve those files from the ``/static/`` URI (this is configurable with the ``static_url_prefix`` setting), and we will serve ``/favicon.ico`` and ``/robots.txt`` from the same directory. A custom subclass of `StaticFileHandler` can be specified with the ``static_handler_class`` setting. .. versionchanged:: 4.5 Integration with the new `tornado.routing` module. Nr� )�handlers� default_hostr� r_ rA c K s� |d u r0g | _ |�d�s"|�d�r6| j �t� n|| _ || _|| _tttd�| _ i | _ | � |�di �� | � |�di �� | j�d�r�| jd }t |p�g �}|�dd�}|�d t�}|�d i �}||d < t�|�d d dfD ]} |�d| ||f� q�| j�d��r:| j�dd� | j�dd� | j�dd� | j�dd� t| |�| _t| tt� | j�g�| _| j�d��r�ddlm} | �� d S )NZcompress_response�gzip)�linkifyr, �TemplaterU rQ r� �static_url_prefix�/static/r� �static_handler_argsr� z(.*)z/(favicon\.ico)z/(robots\.txt)r r� � autoreloadT�compiled_template_cacheF�static_hash_cacherS )r )r� r� r� �GZipContentEncodingr r_ �_linkify�_xsrf_form_html�TemplateModulerU rQ �_load_ui_modules�_load_ui_methodsr� r� r� r �insert� setdefaultr� �wildcard_routerr r �default_routerrr r �start) rH r� r r� r_ r� r r� r �patternr r3 r3 r4 rL � sP � � � � zApplication.__init__r� )�port�addressr@ rA c K s t | fi |��}|�||� |S )a� Starts an HTTP server for this application on the given port. This is a convenience alias for creating an `.HTTPServer` object and calling its listen method. Keyword arguments not supported by `HTTPServer.listen <.TCPServer.listen>` are passed to the `.HTTPServer` constructor. For advanced uses (e.g. multi-process mode), do not use this method; create an `.HTTPServer` and call its `.TCPServer.bind`/`.TCPServer.start` methods directly. Note that after calling this method you still need to call ``IOLoop.current().start()`` to start the server. Returns the `.HTTPServer` object. .. versionchanged:: 4.3 Now returns the `.HTTPServer` object. )r �listen)rH r r r@ �serverr3 r3 r4 r 0 s zApplication.listen)� host_pattern� host_handlersrA c C sP t |�}t|t| |��}| jj�d|� | jdurL| j�t | |j �|fg� dS )z�Appends the given handlers to our handler list. Host patterns are processed sequentially in the order they were added. All matching patterns will be considered. r� N) r r r� r r� r r r Z add_rulesr r )rH r r Z host_matcherr� r3 r3 r4 � add_handlersG s �zApplication.add_handlers)�transform_classrA c C s | j �|� d S rB )r� r� )rH r r3 r3 r4 � add_transformW s zApplication.add_transform)�methodsrA c s� t � tj�r.| �t� fdd�t� �D ��� ndt � t�rN� D ]}| �|� q<nD� �� D ]:\}}|�d�sVt |d�rV|d � � |d krV|| j |< qVd S )Nc 3 s | ]}|t � |�fV qd S rB �r� �rD rE �r r3 r4 rI \ r� z/Application._load_ui_methods.<locals>.<genexpr>r* �__call__r ) r� �types� ModuleTyper r� �dirr� rR ri r� r� rQ )rH r rF r� �fnr3 r" r4 r Z s " ���z Application._load_ui_methods)rJ rA c s� t � tj�r.| �t� fdd�t� �D ��� nlt � t�rN� D ]}| �|� q<nLt � t�s\J �� �� D ]4\}}zt|t �r�|| j |< W qd t y� Y qd0 qdd S )Nc 3 s | ]}|t � |�fV qd S rB r r! �rJ r3 r4 rI k r� z/Application._load_ui_modules.<locals>.<genexpr>) r� r$ r% r r� r& r� rR r� r� rU r� )rH rJ rF r� r� r3 r( r4 r i s " z Application._load_ui_modules�r? rA c C s | � |�}|�� S rB )� find_handler�execute)rH r? � dispatcherr3 r3 r4 r# x s zApplication.__call__�_HandlerDelegate)r? r@ rA c K sZ | j �|�}|d ur td|�S | j�d�rH| �|| jd | j�di ��S | �|tddi�S )Nr- Zdefault_handler_classZdefault_handler_argsr| r� )r r* r) r_ r� r� � ErrorHandler)rH r? r@ Zrouter3 r3 r4 r* s �zApplication.find_handler)r? � target_class� target_kwargsr� r� rA c C s t | |||||�S )ae Returns `~.httputil.HTTPMessageDelegate` that can serve a request for application and `RequestHandler` subclass. :arg httputil.HTTPServerRequest request: current HTTP request. :arg RequestHandler target_class: a `RequestHandler` class. :arg dict target_kwargs: keyword arguments for ``target_class`` constructor. :arg list path_args: positional arguments for ``target_class`` HTTP method that will be executed while handling a request (``get``, ``post`` or any other). :arg dict path_kwargs: keyword arguments for ``target_class`` HTTP method. )r- )rH r? r/ r0 r� r� r3 r3 r4 r� � s �z Application.get_handler_delegater� c G s0 | j j|g|�R � }|dur |S td| ��dS )a3 Returns a URL path for handler named ``name`` The handler must be added to the application as a named `URLSpec`. Args will be substituted for capturing groups in the `URLSpec` regex. They will be converted to strings if necessary, encoded as utf8, and url-escaped. Nz%s not found in named urls)r r- �KeyError)rH r� ra Z reversed_urlr3 r3 r4 r- � s zApplication.reverse_url�r( rA c C sr d| j v r | j d |� dS |�� dk r0tj}n|�� dk rDtj}ntj}d|j�� }|d|�� |�� |� dS )a! Writes a completed HTTP request to the logs. By default writes to the python root logger. To change this behavior either subclass Application and override this method, or pass a function in the application settings dictionary as ``log_function``. Z log_functionNr� rM g @�@z %d %s %.2fms) r_ r� r �infor� rP r? � request_timer� )rH r( Z log_methodr4 r3 r3 r4 r� � s �zApplication.log_request)NNN)r� )NNN) r0 r1 r2 r� r r� r$ r( r rL r� r r r r r r r r� r! r" r# r* r5 r r� r� r- r� r3 r3 r3 r4 r= � sF U � � 8 � � � � r= c @ s� e Zd Zeejee ee e e f ee e ee e e f dd�dd�Zeejejf ejeed d�dd�Ze eed d�d d �Zdd �d d �Zdd �dd�Zeed d �dd�ZdS )r- N)r> r? � handler_class�handler_kwargsr� r� rA c C sN || _ |j| _|| _|| _|p i | _|p*g | _|p4i | _g | _t| j�| _ d S rB ) r> rW r? r5 r6 r� r� �chunksrh r� )rH r> r? r5 r6 r� r� r3 r3 r4 rL � s z_HandlerDelegate.__init__)r: rg rA c C s | j rt� | j_| �� S d S rB )r� r r? ri r+ )rH r: rg r3 r3 r4 �headers_received� s z!_HandlerDelegate.headers_received)�datarA c C s& | j r| j�|�S | j�|� d S d S rB )r� r( r� r7 r� )rH r9 r3 r3 r4 r� � s z _HandlerDelegate.data_receivedr] c C s< | j rt| jjd � n"d�| j�| j_| j�� | �� d S )Nr� ) r� r r? ri r r7 �bodyZ _parse_bodyr+ rG r3 r3 r4 r� � s z_HandlerDelegate.finishc C s | j r| j�� nd | _d S rB )r� r( rY r7 rG r3 r3 r4 rY � s z$_HandlerDelegate.on_connection_closec s� � j j�dd�sNtj�( tj�� D ] }|�� q"W d � n1 sD0 Y � j j�dd�sft�� � j � j � j fi � j ��� _ � fdd�� j j D �}� jr�t� � j _t�� j j|g� j�R i � j���}|�dd� � � j jS )Nr Tr c s g | ]}|� j ��qS r3 )r? )rD r& rG r3 r4 rf r� z,_HandlerDelegate.execute.<locals>.<listcomp>c S s | � � S rB )r� )�fr3 r3 r4 rb r� z*_HandlerDelegate.execute.<locals>.<lambda>)r> r_ r� r5 r r r� �resetr� r5 r? r6 r( r� r� r rP r Zconvert_yieldedr� r� r� Zadd_done_callback)rH r% r� Zfutr3 rG r4 r+ s& (�� �z_HandlerDelegate.execute)r0 r1 r2 r= r r� r( r5 r! r r� r r$ r� rL r ZRequestStartLiner6 rq r" r8 r� r� rY r+ r3 r3 r3 r4 r- � s � � r- c @ s6 e Zd ZdZd eeeedd�dd�Zed�dd �ZdS ) rc a� An exception that will turn into an HTTP error response. Raising an `HTTPError` is a convenient alternative to calling `RequestHandler.send_error` since it automatically ends the current function. To customize the response sent with an `HTTPError`, override `RequestHandler.write_error`. :arg int status_code: HTTP status code. Must be listed in `httplib.responses <http.client.responses>` unless the ``reason`` keyword argument is given. :arg str log_message: Message to be written to the log for this error (will not be shown to the user unless the `Application` is in debug mode). May contain ``%s``-style placeholders, which will be filled in with remaining positional parameters. :arg str reason: Keyword-only argument. The HTTP "reason" phrase to pass in the status line along with ``status_code``. Normally determined automatically from ``status_code``, but can be used to use a non-standard numeric code. rM N)r| r� ra r@ rA c O s: || _ || _|| _|�dd �| _|r6|s6|�dd�| _d S )Nr} �%z%%)r| r� ra r� r} �replace)rH r| r� ra r@ r3 r3 r4 rL ; s zHTTPError.__init__r] c C sF d| j | jptj�| j d�f }| jr>|d | j| j d S |S d S )Nz HTTP %d: %sr~ z (�))r| r} r rz r� r� ra )rH r� r3 r3 r4 �__str__E s �zHTTPError.__str__)rM N) r0 r1 r2 r� r� r� r rL r@ r3 r3 r3 r4 rc $ s �� rc c @ s e Zd ZdZdS )r� a� An exception that ends the request without producing an error response. When `Finish` is raised in a `RequestHandler`, the request will end (calling `RequestHandler.finish` if it hasn't already been called), but the error-handling methods (including `RequestHandler.write_error`) will not be called. If `Finish()` was created with no arguments, the pending response will be sent as-is. If `Finish()` was given an argument, that argument will be passed to `RequestHandler.finish()`. This can be a more convenient way to implement custom error pages than overriding ``write_error`` (especially in library code):: if self.current_user is None: self.set_status(401) self.set_header('WWW-Authenticate', 'Basic realm="something"') raise Finish() .. versionchanged:: 4.3 Arguments passed to ``Finish()`` will be passed on to `RequestHandler.finish`. N)r0 r1 r2 r� r3 r3 r3 r4 r� P s r� c s( e Zd ZdZedd�� fdd� Z� ZS )r� z�Exception raised by `RequestHandler.get_argument`. This is a subclass of `HTTPError`, so if it is uncaught a 400 response code will be used instead of 500 (and a stack trace will not be logged). .. versionadded:: 3.1 N)�arg_namerA c s t t| ��dd| � || _d S )Nr� zMissing argument %s)rK r� rL rA )rH rA r[ r3 r4 rL u s �z MissingArgumentError.__init__)r0 r1 r2 r� r� rL r� r3 r3 r[ r4 r� l s r� c @ s< e Zd ZdZedd�dd�Zdd�dd�Zdd�d d �ZdS ) r. zBGenerates an error response with ``status_code`` for all requests.N)r| rA c C s | � |� d S rB )r� )rH r| r3 r3 r4 rZ s zErrorHandler.initializer] c C s t | j��d S rB )rc ry rG r3 r3 r4 rf � s zErrorHandler.preparec C s d S rB r3 rG r3 r3 r4 r� � s z ErrorHandler.check_xsrf_cookie)r0 r1 r2 r� r� rZ rf r� r3 r3 r3 r4 r. | s r. c @ s4 e Zd ZdZd eedd�dd�Zedd�dd �ZdS ) �RedirectHandlera_ Redirects the client to the given URL for all GET requests. You should provide the keyword argument ``url`` to the handler, e.g.:: application = web.Application([ (r"/oldpath", web.RedirectHandler, {"url": "/newpath"}), ]) `RedirectHandler` supports regular expression substitutions. E.g., to swap the first and second parts of a path while preserving the remainder:: application = web.Application([ (r"/(.*?)/(.*?)/(.*)", web.RedirectHandler, {"url": "/{1}/{0}/{2}"}), ]) The final URL is formatted with `str.format` and the substrings that match the capturing groups. In the above example, a request to "/a/b/c" would be formatted like:: str.format("/{1}/{0}/{2}", "a", "b", "c") # -> "/b/a/c" Use Python's :ref:`format string syntax <formatstrings>` to customize how values are substituted. .. versionchanged:: 4.5 Added support for substitutions into the destination URL. .. versionchanged:: 5.0 If any query arguments are present, they will be copied to the destination URL. TN)r� r� rA c C s || _ || _d S rB )�_url� _permanent)rH r� r� r3 r3 r4 rZ � s zRedirectHandler.initialize)ra rA c G sB | j j|� }| jjr.t�|tt�| jj���}| j|| j d� d S )Nr� ) rC r� r? r� r Z url_concatr� Z qs_to_qslr� rD )rH ra Zto_urlr3 r3 r4 r� � s �zRedirectHandler.get)T) r0 r1 r2 r� r� r� rZ r r� r3 r3 r3 r4 rB � s rB c @ s� e Zd ZdZdZi Ze�� Zd<e e dd�dd�Z e dd�dd ��Z e e d d �d d �Zd=e edd�dd�Zee d�dd�Zdd�dd�Zed�dd�Ze e e e d�dd��Ze e ee d�dd �Ze d>e eeeeddf d �d d ��Ze e e d �d!d"��Ze j d�d#d$�Z ed�d%d&�Z ee j d�d'd(�Z!e d�d)d*�Z"e dd �d+d,�Z#e ee j e ed-�d.d/�Z$e d?e%e e&f e ee d0�d1d2��Z'e e d3�d4d5�Z(e e%e e&f e ee d6�d7d8��Z)e e ee d9�d:d;��Z*dS )@r� aM A simple handler that can serve static content from a directory. A `StaticFileHandler` is configured automatically if you pass the ``static_path`` keyword argument to `Application`. This handler can be customized with the ``static_url_prefix``, ``static_handler_class``, and ``static_handler_args`` settings. To map an additional path to this handler for a static data directory you would add a line to your application like:: application = web.Application([ (r"/content/(.*)", web.StaticFileHandler, {"path": "/var/www"}), ]) The handler constructor requires a ``path`` argument, which specifies the local root directory of the content to be served. Note that a capture group in the regex is required to parse the value for the ``path`` argument to the get() method (different than the constructor argument above); see `URLSpec` for details. To serve a file like ``index.html`` automatically when a directory is requested, set ``static_handler_args=dict(default_filename="index.html")`` in your application settings, or add ``default_filename`` as an initializer argument for your ``StaticFileHandler``. To maximize the effectiveness of browser caching, this class supports versioned urls (by default using the argument ``?v=``). If a version is given, we instruct the browser to cache this file indefinitely. `make_static_url` (also available as `RequestHandler.static_url`) can be used to construct a versioned url. This handler is intended primarily for use in development and light-duty file serving; for heavy traffic it will be more efficient to use a dedicated static file server (such as nginx or Apache). We support the HTTP ``Accept-Ranges`` mechanism to return partial content (because some browsers require this functionality to be present to seek in HTML5 audio or video). **Subclassing notes** This class is designed to be extensible by subclassing, but because of the way static urls are generated with class methods rather than instance methods, the inheritance patterns are somewhat unusual. Be sure to use the ``@classmethod`` decorator when overriding a class method. Instance methods may use the attributes ``self.path`` ``self.absolute_path``, and ``self.modified``. Subclasses should only override methods discussed in this section; overriding other methods is error-prone. Overriding ``StaticFileHandler.get`` is particularly problematic due to the tight coupling with ``compute_etag`` and other methods. To change the way static urls are generated (e.g. to match the behavior of another server or CDN), override `make_static_url`, `parse_url_path`, `get_cache_time`, and/or `get_version`. To replace all interaction with the filesystem (e.g. to serve static content from a database), override `get_content`, `get_content_size`, `get_modified_time`, `get_absolute_path`, and `validate_absolute_path`. .. versionchanged:: 3.1 Many of the methods for subclasses were added in Tornado 3.1. i �N)r� �default_filenamerA c C s || _ || _d S rB )�rootrE )rH r� rE r3 r3 r4 rZ s z StaticFileHandler.initializer] c C s0 | j � i | _W d � n1 s"0 Y d S rB )�_lock�_static_hashesr� r3 r3 r4 r< s zStaticFileHandler.reset�r� rA c C s | j |dd�S )NF)� include_body)r� �rH r� r3 r3 r4 r� s zStaticFileHandler.headT)r� rJ rA c � sF | � |�| _~| �| j| j�}| �| j|�| _| jd u r<d S | �� | _| �� | � � rd| � d� d S d }| j j � d�}|r�t�|�}| �� }|�rh|\}}|d ur�|dk r�||7 }|dk r�d}|d ur�||ks�|d ur�||ks�|dk�r| � d� | �dd� | �dd|f � d S |d u�r,||k�r,|}||�p6||�p>d k�rp| � d � | �dt�|||�� nd }}|d u�r�|d u�r�|| } n(|d u�r�|} n|d u�r�|| } n|} | �d | � |�r0| �| j||�} t| t��r�| g} | D ]>} z | �| � | �� I d H W n tj�y( Y d S 0 �q�n| j jd k�sBJ �d S ) Nr? �Ranger i� rn rT r� z bytes */%s�� rB r7 )�parse_url_pathr� �get_absolute_pathrF �validate_absolute_path� absolute_path�get_modified_time�modified� set_headers�should_return_304r� r? rg r� r Z_parse_request_range�get_content_sizer� Z_get_content_range� get_contentr� r� r� r< r rk r4 ) rH r� rJ rQ Z request_rangeZ range_header�sizer �endrK �contentr� r3 r3 r4 r� s~ ����� � zStaticFileHandler.getc C s, | j dusJ �| �| j �}|s"dS d|f S )a Sets the ``Etag`` header based on static url version. This allows efficient ``If-None-Match`` checks against cached versions, and sends the correct ``Etag`` for a partial response (i.e. the same ``Etag`` as the full file). .. versionadded:: 3.1 Nr� )rQ �_get_cached_version)rH � version_hashr3 r3 r4 r� c s z StaticFileHandler.compute_etagc C s� | � dd� | �� | jdur,| � d| j� | �� }|rD| � d|� | �| j| j|�}|dkr�| � dtj�� tj|d� � | � d d t |� � | � | j� dS ) z]Sets the content and caching headers on the response. .. versionadded:: 3.1 z Accept-Rangesr� Nr� rn r ZExpires)�secondsz Cache-Controlzmax-age=) r� rE rS �get_content_type�get_cache_timer� r� r� r� r� �set_extra_headers)rH � content_typeZ cache_timer3 r3 r4 rT r s �z StaticFileHandler.set_headersc C sr | j j�d�r| �� S | j j�d�}|durntj�|�}|durntj|dd� � }| jdus`J �|| jkrndS dS )zgReturns True if the headers indicate that we should return 304. .. versionadded:: 3.1 r� zIf-Modified-SinceN� TF) r? rg r� rF �email�utils� parsedater� rS )rH Z ims_valueZ date_tupleZif_sincer3 r3 r4 rU � s z#StaticFileHandler.should_return_304)rF r� rA c C s t j�t j�||��}|S )a� Returns the absolute location of ``path`` relative to ``root``. ``root`` is the path configured for this `StaticFileHandler` (in most cases the ``static_path`` `Application` setting). This class method may be overridden in subclasses. By default it returns a filesystem path, but other strings may be used as long as they are unique and understood by the subclass's overridden `get_content`. .. versionadded:: 3.1 )r r� �abspathr )r� rF r� rf r3 r3 r4 rO � s z#StaticFileHandler.get_absolute_path)rF rQ rA c C s� t j�|�}|�t jj�s&|t jj7 }|t jj �|�sFtdd| j��t j�|�r�| jdur�| j j�d�s�| j | j jd dd� dS t j� || j�}t j� |�s�td��t j� |�s�tdd| j��|S ) a� Validate and return the absolute path. ``root`` is the configured path for the `StaticFileHandler`, and ``path`` is the result of `get_absolute_path` This is an instance method called during request processing, so it may raise `HTTPError` or use methods like `RequestHandler.redirect` (return None after redirecting to halt further processing). This is where 404 errors for missing files are generated. This method may modify the path before returning it, but note that any such modifications will not be understood by `make_static_url`. In instance methods, this method's result is available as ``self.absolute_path``. .. versionadded:: 3.1 r� z"%s is not in root static directoryNr� Tr� r� z%s is not a file)r r� rf r� �sepri rc �isdirrE r? r� r �exists�isfile)rH rF rQ r3 r3 r4 rP � s z(StaticFileHandler.validate_absolute_path)rf r rY rA c c s� t |d���}|dur |�|� |dur4||p.d }nd}d}|durP||k rP|}|�|�}|rz|durr|t|�8 }|V q8|dur�|dks�J �W d � dS q8W d � n1 s�0 Y dS )aZ Retrieve the content of the requested resource which is located at the given absolute path. This class method may be overridden by subclasses. Note that its signature is different from other overridable class methods (no ``settings`` argument); this is deliberate to ensure that ``abspath`` is able to stand on its own as a cache key. This method should either return a byte string or an iterator of byte strings. The latter is preferred for large files as it helps reduce memory fragmentation. .. versionadded:: 3.1 �rbNr i )�open�seek�readrC )r� rf r rY �file� remaining� chunk_sizer� r3 r3 r4 rW � s" z StaticFileHandler.get_content)rf rA c C sD | � |�}t�� }t|t�r(|�|� n|D ]}|�|� q,|�� S )z�Returns a version string for the resource at the given path. This class method may be overridden by subclasses. The default implementation is a hash of the file's contents. .. versionadded:: 3.1 )rW r� �md5r� r� r! r� )r� rf r9 r� r� r3 r3 r4 �get_content_version s z%StaticFileHandler.get_content_versionc C s, | j d usJ �t| d�s&t�| j �| _| jS )N� _stat_result)rQ r� r �statrt rG r3 r3 r4 �_stat s zStaticFileHandler._statc C s | � � }|jS )a% Retrieve the total size of the resource at the given path. This method may be overridden by subclasses. .. versionadded:: 3.1 .. versionchanged:: 4.0 This method is now always called, instead of only when partial results are requested. )rv �st_size)rH � stat_resultr3 r3 r4 rV # s z"StaticFileHandler.get_content_sizec C s | � � }tj�t|j��}|S )z�Returns the time that ``self.absolute_path`` was last modified. May be overridden in subclasses. Should return a `~datetime.datetime` object or None. .. versionadded:: 3.1 )rv r� �utcfromtimestampr� �st_mtime)rH rx rS r3 r3 r4 rR 1 s z#StaticFileHandler.get_modified_timec C sJ | j dusJ �t�| j �\}}|dkr*dS |dur6dS |durB|S dS dS )zhReturns the ``Content-Type`` header to be used for this request. .. versionadded:: 3.1 Nr zapplication/gzipzapplication/octet-stream)rQ � mimetypes� guess_type)rH � mime_type�encodingr3 r3 r4 r^ E s z"StaticFileHandler.get_content_typec C s dS )z1For subclass to add extra headers to the responseNr3 rK r3 r3 r4 r` Z s z#StaticFileHandler.set_extra_headers)r� rS r} rA c C s d| j jv r| jS dS )a� Override to customize cache control behavior. Return a positive number of seconds to make the result cacheable for that amount of time or 0 to mark resource as cacheable for an unspecified amount of time (subject to browser heuristics). By default returns cache expiry of 10 years for resources requested with ``v`` argument. r� r )r? r� � CACHE_MAX_AGE)rH r� rS r} r3 r3 r4 r_ ^ s z StaticFileHandler.get_cache_time)r_ r� �include_versionrA c C s8 |� dd�| }|s|S | �||�}|s,|S d||f S )a Constructs a versioned url for the given path. This method may be overridden in subclasses (but note that it is a class method rather than an instance method). Subclasses are only required to implement the signature ``make_static_url(cls, settings, path)``; other keyword arguments may be passed through `~RequestHandler.static_url` but are not standard. ``settings`` is the `Application.settings` dictionary. ``path`` is the static path being requested. The url returned should be relative to the current host. ``include_version`` determines whether the generated URL should include the query string containing the version hash of the file corresponding to the given ``path``. r r z%s?v=%s)r� � get_version)r� r_ r� r� r� r\ r3 r3 r4 r� m s z!StaticFileHandler.make_static_url)�url_pathrA c C s t jjdkr |�dt jj�}|S )a" Converts a static URL path into a filesystem path. ``url_path`` is the path component of the URL with ``static_url_prefix`` removed. The return value should be filesystem path relative to ``static_path``. This is the inverse of `make_static_url`. r� )r r� rg r> )rH r� r3 r3 r4 rN � s z StaticFileHandler.parse_url_path)r_ r� rA c C s | � |d |�}| �|�S )a% Generate the version string to be used in static URLs. ``settings`` is the `Application.settings` dictionary and ``path`` is the relative location of the requested asset on the filesystem. The returned value should be a string, or ``None`` if no version could be determined. .. versionchanged:: 3.1 This method was previously recommended for subclasses to override; `get_content_version` is now preferred as it allows the base class to handle caching of the result. r� )rO r[ )r� r_ r� �abs_pathr3 r3 r4 r� � s z StaticFileHandler.get_version)r� rA c C s� | j �x | j}||vrPz| �|�||< W n& tyN t�d|� d ||< Y n0 |�|�}|rp|W d � S W d � n1 s�0 Y d S )Nz Could not open static file %r)rG rH rs r� r rP r� )r� r� �hashesZhshr3 r3 r4 r[ � s 0z%StaticFileHandler._get_cached_version)N)T)NN)T)+r0 r1 r2 r� r rH r� r� rG r� rZ � classmethodr< r" r� r� r� r! r� rT rU rO rP r� r' r� rW rs r rx rv rV r� rR r^ r` r_ r r r� rN r� r[ r3 r3 r3 r4 r� � sT BS2 � �& � �� r� c @ s: e Zd ZdZeejgdf dd�dd�Zdd�dd�ZdS ) �FallbackHandleraM A `RequestHandler` that wraps another HTTP server callback. The fallback is a callable object that accepts an `~.httputil.HTTPServerRequest`, such as an `Application` or `tornado.wsgi.WSGIContainer`. This is most useful to use both Tornado ``RequestHandlers`` and WSGI in the same server. Typical usage:: wsgi_app = tornado.wsgi.WSGIContainer( django.core.handlers.wsgi.WSGIHandler()) application = tornado.web.Application([ (r"/foo", FooHandler), (r".*", FallbackHandler, dict(fallback=wsgi_app), ]) N)�fallbackrA c C s || _ d S rB )r� )rH r� r3 r3 r4 rZ � s zFallbackHandler.initializer] c C s | � | j� d| _| �� d S )NT)r� r? rN rg rG r3 r3 r4 rf � s zFallbackHandler.prepare) r0 r1 r2 r� r% r r� rZ rf r3 r3 r3 r4 r� � s � r� c @ sX e Zd ZdZejdd�dd�Zeeje e e eeje f d�dd�Z e e e d �d d �Z dS ) r� z�A transform modifies the result of an HTTP request (e.g., GZip encoding) Applications are not expected to create their own OutputTransforms or interact with them directly; the framework chooses which transforms (if any) to apply. Nr) c C s d S rB r3 �rH r? r3 r3 r4 rL � s zOutputTransform.__init__�r| rg r� � finishingrA c C s |||fS rB r3 )rH r| rg r� r� r3 r3 r4 r3 � s z%OutputTransform.transform_first_chunk�r� r� rA c C s |S rB r3 �rH r� r� r3 r3 r4 r7 � s z OutputTransform.transform_chunk)r0 r1 r2 r� r r� rL r� rq r� r� r# r3 r7 r3 r3 r3 r4 r� � s � r� c @ s| e Zd ZdZeg d��ZdZdZej dd�dd�Z e e d �d d �Z eejee eeejef d �d d�Zee ed�dd�ZdS )r aI Applies the gzip content encoding to the response. See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11 .. versionchanged:: 4.0 Now compresses all mime types beginning with ``text/``, instead of just a whitelist. (the whitelist is still used for certain non-text mime types). )zapplication/javascriptzapplication/x-javascriptzapplication/xmlzapplication/atom+xmlzapplication/jsonzapplication/xhtml+xmlz image/svg+xmlrb i Nr) c C s d|j �dd�v | _d S )Nr �Accept-Encodingr� )rg r� � _gzippingr� r3 r3 r4 rL s z GZipContentEncoding.__init__)�ctyperA c C s |� d�p|| jv S )Nztext/)ri � CONTENT_TYPES)rH r� r3 r3 r4 �_compressible_type s z&GZipContentEncoding._compressible_typer� c C s� d|v r|d d7 < nd|d< | j rjt|�dd���d�d }| �|�of| s`t|�| jkofd|v| _ | j r�d |d< t� | _t j d | j| j d �| _ | � ||�}d |v r�|r�tt|��|d < n|d = |||fS ) NZVaryz, Accept-Encodingr� rn r� r` r r� r �w)�mode�fileobj� compresslevelrB )r� r r� rh r� rC � MIN_LENGTHr � _gzip_valuer �GzipFile� GZIP_LEVEL� _gzip_filer7 r� )rH r| rg r� r� r� r3 r3 r4 r3 s, �� � z)GZipContentEncoding.transform_first_chunkr� c C sR | j rN| j�|� |r"| j�� n | j�� | j�� }| j�d� | j�d� |S )Nr ) r� r� r� �closer< r� �getvalue�truncaterm r� r3 r3 r4 r7 = s z#GZipContentEncoding.transform_chunk)r0 r1 r2 r� r r� r� r� r r� rL r� r� r� r� rq r� r# r3 r7 r3 r3 r3 r4 r � s �� %r c s* t �� �tttd d�� fdd� �}|S )a� Decorate methods with this to require that the user be logged in. If the user is not logged in, they will be redirected to the configured `login url <RequestHandler.get_login_url>`. If you configure a login url with a query parameter, Tornado will assume you know what you're doing and use it as-is. If not, it will add a `next` parameter so the login page knows where to send you once you're logged in. Nr� c s� | j s�| jjdv rx| �� }d|vrjtj�|�jr<| j�� }n| jj d usLJ �| jj }|dt t |d�� 7 }| � |� d S t d��� | g|�R i |��S )Nr= r� )�nextr� )r) r? r4 rr �urllib�parse�urlsplit�scheme�full_urlr� r r� r� rc )rH ra r@ r� Znext_urlr� r3 r4 r� X s z authenticated.<locals>.wrapperr� r� r3 r� r4 � authenticatedJ s �r� c @ s� e Zd ZdZedd�dd�Zeed�dd��Zeee d �d d �Z e e d�d d �Z e e e d�dd�Ze e d�dd�Ze e e d�dd�Ze e d�dd�Ze e d�dd�Ze eed�dd�ZdS )r� a2 A re-usable, modular UI unit on a page. UI modules often execute additional queries, and they can include additional CSS and JavaScript that will be included in the output page, which is automatically inserted on page render. Subclasses of UIModule must override the `render` method. Nr2 c C s" || _ |j| _|j| _|j| _d S rB )r( r? rS r �rH r( r3 r3 r4 rL y s zUIModule.__init__r] c C s | j jS rB )r( r) rG r3 r3 r4 r) s zUIModule.current_userr` c O s t � �dS )z6Override in subclasses to return this module's output.Nr� rd r3 r3 r4 r � s zUIModule.renderc C s dS )zJOverride to return a JavaScript string to be embedded in the page.Nr3 rG r3 r3 r4 r� � s z UIModule.embedded_javascriptc C s dS )z�Override to return a list of JavaScript files needed by this module. If the return values are relative paths, they will be passed to `RequestHandler.static_url`; otherwise they will be used as-is. Nr3 rG r3 r3 r4 r� � s zUIModule.javascript_filesc C s dS )zJOverride to return a CSS string that will be embedded in the page.Nr3 rG r3 r3 r4 r� � s zUIModule.embedded_cssc C s dS )z�Override to returns a list of CSS files required by this module. If the return values are relative paths, they will be passed to `RequestHandler.static_url`; otherwise they will be used as-is. Nr3 rG r3 r3 r4 r� � s zUIModule.css_filesc C s dS )z[Override to return an HTML string that will be put in the <head/> element. Nr3 rG r3 r3 r4 r� � s zUIModule.html_headc C s dS )zfOverride to return an HTML string that will be put at the end of the <body/> element. Nr3 rG r3 r3 r4 r� � s zUIModule.html_body�r� r@ rA c K s | j j|fi |��S )z.Renders a template and returns it as a string.)r( r� )rH r� r@ r3 r3 r4 r� � s zUIModule.render_string)r0 r1 r2 r� r5 rL r� r r) r� r r! r� r& r� r� r� r� r� r� r� r3 r3 r3 r4 r� o s r� c @ s e Zd Zeeed�dd�ZdS )r )�textr@ rA c K s t j|fi |��S rB )r r )rH r� r@ r3 r3 r4 r � s z_linkify.renderN)r0 r1 r2 r� r r r3 r3 r3 r4 r � s r c @ s e Zd Zed�dd�ZdS )r r] c C s | j �� S rB )r( r, rG r3 r3 r4 r � s z_xsrf_form_html.renderN)r0 r1 r2 r� r r3 r3 r3 r4 r � s r c s� e Zd ZdZedd�� fdd� Zeeed�dd�Z ee e d �d d �Z ed �d d�Z e e d �dd�Z ed �dd�Ze e d �dd�Zed �dd�Zed �dd�Z� ZS )r a� UIModule that simply renders the given template. {% module Template("foo.html") %} is similar to {% include "foo.html" %}, but the module version gets its own namespace (with kwargs passed to Template()) instead of inheriting the outer template's namespace. Templates rendered through this module also get access to UIModule's automatic javascript/css features. Simply call set_resources inside the template and give it keyword arguments corresponding to the methods on UIModule: {{ set_resources(js_files=static_url("my.js")) }} Note that these resources are output once per template file, not once per instantiation of the template, so they must not depend on any arguments to the template. Nr2 c s t t| ��|� g | _i | _d S rB )rK r rL �_resource_list�_resource_dictr� r[ r3 r4 rL � s zTemplateModule.__init__r� c s* t d�� �fdd� }�j� fd|i|��S )Nr] c s< � �j vr"�j�| � | �j � < n�j � | kr8td��dS )NzCset_resources called with different resources for the same templater� )r� r� r� r� )r@ �r� rH r3 r4 � set_resources� s �z,TemplateModule.render.<locals>.set_resourcesr� )r� r� )rH r� r@ r� r3 r� r4 r � s zTemplateModule.render�rc rA c s � fdd�| j D �S )Nc 3 s | ]}� |v r|� V qd S rB r3 )rD �r�rc r3 r4 rI � r� z0TemplateModule._get_resources.<locals>.<genexpr>)r� �rH rc r3 r� r4 �_get_resources� s z TemplateModule._get_resourcesr] c C s d� | �d��S )N� r� �r r� rG r3 r3 r4 r� � s z"TemplateModule.embedded_javascriptc C s< g }| � d�D ](}t|ttf�r,|�|� q|�|� q|S )Nr� �r� r� r r� r� r� �rH r� r; r3 r3 r4 r� � s z TemplateModule.javascript_filesc C s d� | �d��S )Nr� r� r� rG r3 r3 r4 r� � s zTemplateModule.embedded_cssc C s< g }| � d�D ](}t|ttf�r,|�|� q|�|� q|S )Nr� r� r� r3 r3 r4 r� � s zTemplateModule.css_filesc C s d� | �d��S )Nr� r� r� rG r3 r3 r4 r� � s zTemplateModule.html_headc C s d� | �d��S )Nr� r� r� rG r3 r3 r4 r� � s zTemplateModule.html_body)r0 r1 r2 r� r5 rL r� r r� r r& r� r� r� r� r� r� r� r� r3 r3 r[ r4 r � s r c @ s^ e Zd ZdZeeeee f dd�dd�Z ee def d�dd �Z ee def d�d d �Z dS ) rT zALazy namespace which creates UIModule proxies bound to a handler.N)r( rU rA c C s || _ || _d S rB )r( rU )rH r( rU r3 r3 r4 rL s z_UIModuleNamespace.__init__.r� c C s | j �|| j| �S rB )r( r� rU r� r3 r3 r4 � __getitem__ s z _UIModuleNamespace.__getitem__c C s@ z | | W S t y: } ztt|���W Y d }~n d }~0 0 d S rB )r1 �AttributeErrorr� )rH rc r� r3 r3 r4 � __getattr__ s z _UIModuleNamespace.__getattr__) r0 r1 r2 r� r5 r r� r( r� rL r% r� r� r3 r3 r3 r4 rT s � rT )r� r� r� rs �clockr� rA c C s |d u r t }|d u rtj}ttt|� ���}t�t|��}|dkrrt| t�rPJ �t | |||�}d� |||g�}|S |dk�rt tt f t d�dd�}d� d|t|p�d��||�||�||�d g�} t| t�r�|d us�J d ��|dks�J d ��| | } t | | �}| | S td | ��d S ) Nr- ru r. �r� rA c S s t dt| � �t | � S )Nz%d:)r rC )r� r3 r3 r4 � format_field9 s z)create_signed_value.<locals>.format_fieldrv r r� z2Key version must be set when sign key dict is usedz2Version must be at least 2 for key version supportzUnsupported version %d)� DEFAULT_SIGNED_VALUE_VERSIONru r r� r� �base64� b64encoder� r� �_create_signature_v1r r r� �_create_signature_v2r� ) r� r� r� rs r� r� r} � signaturer� Zto_signr3 r3 r4 r� s@ �� �� r� s ^([1-9][0-9]*)\|(.*)$r� c C sR t �| �}|d u rd}n6z t|�d��}|dkr4d}W n tyL d}Y n0 |S )Nr- i� )r� r� r� r� r� )r� rF rs r3 r3 r4 � _get_versionY s r� r� )r� r� r� r� r� r� rA c C s� |d u rt j }|d u rt}|dkr.td| ��|s6d S t|�}t|�}||k rRd S |dkrxt| t�rhJ �t| ||||�S |dkr�t| ||||�S d S d S )Nr. zUnsupported min_version %dr- ) ru � DEFAULT_SIGNED_VALUE_MIN_VERSIONr� r r� r� r� �_decode_signed_value_v1�_decode_signed_value_v2)r� r� r� r� r� r� rs r3 r3 r4 r� p s$ r� )r� r� r� r� r� rA c C s� t |��d�}t|�dkr d S t| ||d |d �}t�|d |�sTt�d|� d S t|d �}||� |d k r�t�d|� d S ||� d kr�t�d |� d S |d � d �r�t�d |� d S zt � |d �W S t y� Y d S 0 d S ) Nru � r r- r. zInvalid cookie signature %r�Q zExpired cookie %ri��( z1Cookie timestamp in future; possible tampering %r� 0zTampered cookie %r) r rh rC r� r� r� r r� r� ri r� � b64decoder� )r� r� r� r� r� rn r� r} r3 r3 r4 r� � s* r� c C sf t tt t f d�dd�}| dd � }||�\}}||�\}}||�\}}||�\}}t|�||||fS )Nr� c S sX | � d�\}}}t|�}|d |� }|||d � dkr@td��||d d � }||fS )N� :r- ru z malformed v2 signed value field)� partitionr� r� )r� �lengthr* �restrE Z field_valuer3 r3 r4 �_consume_field� s z)_decode_fields_v2.<locals>._consume_fieldr. )r� r# r� )r� r� r� r� r} � name_field� value_field� passed_sigr3 r3 r4 �_decode_fields_v2� s r� c C s� zt |�\}}}}} W n ty* Y d S 0 |d t| � � } t| t�rjz | | } W n tyh Y d S 0 t| | �} t�| | �s�d S |t |�kr�d S t |�} | |� |d k r�d S z t � |�W S t y� Y d S 0 d S )Nr� )r� r� rC r� r� r1 r� r� r� r r� r� r� r� ) r� r� r� r� r� r� Ztimestamp_bytesr� r� r� Z signed_stringZ expected_sigr} r3 r3 r4 r� � s: �� r� c C sL t | �} t| �}|dk r d S zt| �\}}}}}W n tyF Y d S 0 |S )Nr. )r r� r� r� )r� rs r� r* r3 r3 r4 r� � s r� )r� rn rA c G s8 t jt| �tjd�}|D ]}|�t|�� qt|�� �S �N)� digestmod)r� �newr r� r� r! 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