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This module defines a number of utilities for use by CGI scripts
written in Python.
z2.6 )StringIOBytesIO
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r, Y nX ts8tantat| dS )a Write a log message, if there is a log file.
Even though this function is called initlog(), you should always
use log(); log is a variable that is set either to initlog
(initially), to dolog (once the log file has been opened), or to
nolog (when logging is disabled).
The first argument is a format string; the remaining arguments (if
any) are arguments to the % operator, so e.g.
log("%s: %s", "a", "b")
will write "a: b" to the log file, followed by a newline.
If the global logfp is not None, it should be a file object to
which log data is written.
If the global logfp is None, the global logfile may be a string
giving a filename to open, in append mode. This file should be
world writable!!! If the file can't be opened, logging is
silently disabled (since there is no safe place where we could
send an error message).
aN)logfilelogfpopenOSErrornologlogdolog)allargs r" (/opt/alt/python36/lib64/python3.6/cgi.pyinitlog: s
r$ c G s t j| | d dS )z=Write a log message to the log file. See initlog() for docs.
N)r write)Zfmtargsr" r" r# r ] s r c G s dS )z9Dummy function, assigned to log when logging is disabled.Nr" )r! r" r" r# r a s r c C s da trtj datadS )zClose the log file.r N)r r closer$ r r" r" r" r# closeloge s
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a Store a sequence of fields, reading multipart/form-data.
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more. At the top level, it is accessible like a dictionary, whose
keys are the field names. (Note: None can occur as a field name.)
The items are either a Python list (if there's multiple values) or
another FieldStorage or MiniFieldStorage object. If it's a single
object, it has the following attributes:
name: the field name, if specified; otherwise None
filename: the filename, if specified; otherwise None; this is the
client side filename, *not* the file name on which it is
stored (that's a temporary file you don't deal with)
value: the value as a *string*; for file uploads, this
transparently reads the file every time you request the value
and returns *bytes*
file: the file(-like) object from which you can read the data *as
bytes* ; None if the data is stored a simple string
type: the content-type, or None if not specified
type_options: dictionary of options specified on the content-type
line
disposition: content-disposition, or None if not specified
disposition_options: dictionary of corresponding options
headers: a dictionary(-like) object (sometimes email.message.Message or a
subclass thereof) containing *all* headers
The class is subclassable, mostly for the purpose of overriding
the make_file() method, which is called internally to come up with
a file open for reading and writing. This makes it possible to
override the default choice of storing all files in a temporary
directory and unlinking them as soon as they have been opened.
NrJ r zutf-8rl r* c C sR d} || _ || _|
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read_multi read_single)rq r@ rZ r rA rB rC r r+ r r r3 methodrG ZcdisprE rD Zclenr" r" r# rr s /
zFieldStorage.__init__c C s( y| j j W n tk
r" Y nX d S )N)r{ r( AttributeError)rq r" r" r# __del__= s zFieldStorage.__del__c C s | S )Nr" )rq r" r" r# __enter__C s zFieldStorage.__enter__c G s | j j d S )N)r{ r( )rq r' r" r" r# __exit__F s zFieldStorage.__exit__c C s d| j | j| jf S )z"Return a printable representation.zFieldStorage(%r, %r, %r))rM rx rp )rq r" r" r# rs I s zFieldStorage.__repr__c C s t | j S )N)iterkeys)rq r" r" r# __iter__N s zFieldStorage.__iter__c C sT |dkrt || jr:| jjd | jj }| jjd n| jd k rL| j}nd }|S )Nrp r )r r{ seekr< ry )rq rM rp r" r" r# __getattr__Q s
zFieldStorage.__getattr__c C sb | j dkrtdg }x"| j D ]}|j|kr |j| q W |sFt|t|dkrZ|d S |S dS )zDictionary style indexing.Nz
not indexabler2 r )ry r rM rU KeyErrorrb )rq r] founditemr" r" r# __getitem__^ s
zFieldStorage.__getitem__c C s8 || kr0| | }t |tr(dd |D S |jS n|S dS )z8Dictionary style get() method, including 'value' lookup.c S s g | ]
}|j qS r" )rp ).0xr" r" r#
q s z)FieldStorage.getvalue..N)r7 ry rp )rq r] defaultrp r" r" r# getvaluel s
zFieldStorage.getvaluec C s4 || kr,| | }t |tr$|d jS |jS n|S dS )z! Return the first value received.r N)r7 ry rp )rq r] r rp r" r" r# getfirstw s
zFieldStorage.getfirstc C s: || kr2| | }t |tr(dd |D S |jgS ng S dS )z Return list of received values.c S s g | ]
}|j qS r" )rp )r r r" r" r# r s z(FieldStorage.getlist..N)r7 ry rp )rq r] rp r" r" r# getlist s
zFieldStorage.getlistc C s* | j dkrtdt tdd | j D S )z Dictionary style keys() method.Nz
not indexablec s s | ] }|j V qd S )N)rM )r r r" r" r# s z$FieldStorage.keys..)ry r set)rq r" r" r# r s
zFieldStorage.keysc s* | j dkrtdt fdd| j D S )z%Dictionary style __contains__ method.Nz
not indexablec 3 s | ]}|j kV qd S )N)rM )r r )r] r" r# r s z,FieldStorage.__contains__..)ry r any)rq r] r" )r] r# __contains__ s
zFieldStorage.__contains__c C s t | j S )z Dictionary style len(x) support.)rb r )rq r" r" r# __len__ s zFieldStorage.__len__c C s | j d krtdt| j S )Nz Cannot be converted to bool.)ry r bool)rq r" r" r# __bool__ s
zFieldStorage.__bool__c C s | j j| j}t|ts0td| j t|jf |j| j | j
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| j| jd}dd |D | _| j dS )z+Internal: read data in query string format.z %s should return bytes, got %sr* )r+ r r r3 c S s g | ]\}}t ||qS r" )r )r r] rp r" r" r# r s z0FieldStorage.read_urlencoded..N)r@ r< r r7 rX r; rz rt r= r+ r r r? r r
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z/Internal: read a part that is itself multipart.z&Invalid boundary in multipart form: %r)r+ r r r3 c s s | ]\}}t ||V qd S )N)r )r r] rp r" r" r# r s z*FieldStorage.read_multi..z %s should return bytes, got %ss --NrJ zcontent-lengthr2 r z Max number of fields exceeded)#r rP r; ry r r? r r
rB rC r+ r r r3 extendFieldStorageClass __class__r@ rR r7 rX rz rt r rb rc r Zfeedr= r( r rU r r r )rq rA rB rC Zibr klassZ
first_liner parserZhdr_textrY rZ partr" r" r# r sh
(zFieldStorage.read_multic C s4 | j dkr | j | j n| j | jjd dS )z Internal: read an atomic part.r N)r read_binaryr
read_linesr{ r )rq r" r" r# r s
zFieldStorage.read_single i c C s | j | _| j}|dkrxx|dkr| jjt|| j}t|tsXt d| jt
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| }qW dS )zInternal: read binary data.r z %s should return bytes, got %sr2 NrN ) make_filer{ r r@ r< minbufsizer7 rX r; rz rt r rb r r& )rq ZtodorY r" r" r# r s
zFieldStorage.read_binaryc C s@ | j rt | _| _nt | _| _| jr4| j n| j dS )z0Internal: read lines until EOF or outerboundary.N)r r r{ _FieldStorage__filer r read_lines_to_outerboundaryread_lines_to_eof)rq r" r" r# r s
zFieldStorage.read_linesc C sv | j dk rF| j j t| dkrF| j | _| j j }| jj| d| _ | jrZ| jj| n| jj|j| j | j
dS )z line is always bytes, not stringNi ) r tellrb r r{ r r& r r= r+ r )rq r\ rY r" r" r# Z__write s
zFieldStorage.__writec C s> x8| j jd}| jt|7 _|s,d| _P | j| qW dS )z Internal: read lines until EOF.r2 Ni rN )r@ rR r rb r _FieldStorage__write)rq r\ r" r" r# r - s z FieldStorage.read_lines_to_eofc C s, d| j }|d }d}d}d}x|| jkr.P | jjd
}| jt|7 _|t|7 }|sdd| _P |dkrx|| }d}|jdr|r|j }||krP ||krd| _P |}|j drd}|d d }d}nJ|j d rd }|d d }d}n*|j drd}|d d }d }nd}d }| j
|| q"W d S )zInternal: read lines until outerboundary.
Data is read as bytes: boundaries and line ends must be converted
to bytes for comparisons.
s --rJ Tr r2 r
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z(FieldStorage.read_lines_to_outerboundaryc C s | j s| jrdS d| j }|d }d}xh| jjd}| jt|7 _|sTd| _P |jdr|r|j }||krtP ||krd| _P |jd}q*W dS ) z5Internal: skip lines until outer boundary if defined.Ns --Tr2 r rL i rN )r r r@ rR r rb r rc )rq r r r r\ r r" r" r# r h s&
zFieldStorage.skip_linesc C s& | j rtjdS tjd| jddS dS )a Overridable: return a readable & writable file.
The file will be used as follows:
- data is written to it
- seek(0)
- data is read from it
The file is opened in binary mode for files, in text mode
for other fields
This version opens a temporary file for reading and writing,
and immediately deletes (unlinks) it. The trick (on Unix!) is
that the file can still be used, but it can't be opened by
another process, and it will automatically be deleted when it
is closed or when the current process terminates.
If you want a more permanent file, you derive a class which
overrides this method. If you want a visible temporary file
that is nevertheless automatically deleted when the script
terminates, try defining a __del__ method in a derived class
which unlinks the temporary files you have created.
zwb+zw+r% )r+ newlineN)r tempfileZ
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zRobust test CGI script, usable as main program.
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zContent-type: text/htmlc S s t d d S )Nz,testing print_exception() -- italics?)execr" r" r" r# rf s ztest..fc S s
| d S )Nr" )rf r" r" r# g s ztest..gz9What follows is a test, not an actual exception:
z*Second try with a small maxlen...
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c C sx | d krt j \} }}dd l}t td |j|||j| | }tdtjdj|d d tj|d f ~d S )Nr z+Traceback (most recent call last):
z%s%s
r r2 rN rN ) r4 exc_info tracebackr format_tbformat_exception_onlyhtmlr rV )rz rp tbr r ry r" r" r# r s
c C s` t | j }t td td x*|D ]"}tdtj|dtj| | q(W td t dS )z#Dump the shell environment as HTML.zShell Environment:
zz- z
- z
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"c C s t | j }t td |s&td td xb|D ]Z}tdtj| d dd | | }tdtjtt| d td
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z$Dump the contents of a form as HTML.zForm Contents:
zNo form fields.z
z- : )re zzz
- z
N)r r r r r reprrz )r r r] rp r" r" r# r s
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zOSError:N)r r getcwdr r r str)pwdmsgr" r" r# r s &c C s( t t d t t tj t d S )Nz Command Line Arguments:
)r r4 r> r" r" r" r# r s
c C s t d dS )z9Dump a list of environment variables used by CGI as HTML.a
These environment variables could have been set:
- AUTH_TYPE
- CONTENT_LENGTH
- CONTENT_TYPE
- DATE_GMT
- DATE_LOCAL
- DOCUMENT_NAME
- DOCUMENT_ROOT
- DOCUMENT_URI
- GATEWAY_INTERFACE
- LAST_MODIFIED
- PATH
- PATH_INFO
- PATH_TRANSLATED
- QUERY_STRING
- REMOTE_ADDR
- REMOTE_HOST
- REMOTE_IDENT
- REMOTE_USER
- REQUEST_METHOD
- SCRIPT_NAME
- SERVER_NAME
- SERVER_PORT
- SERVER_PROTOCOL
- SERVER_ROOT
- SERVER_SOFTWARE
In addition, HTTP headers sent by the server may be passed in the
environment as well. Here are some common variable names:
- HTTP_ACCEPT
- HTTP_CONNECTION
- HTTP_HOST
- HTTP_PRAGMA
- HTTP_REFERER
- HTTP_USER_AGENT
N)r r" r" r" r# r s 'c C sF t dtdd | jdd} | jdd} | jdd } |rB| jd
d } | S ) zDeprecated API.z1cgi.escape is deprecated, use html.escape insteadrH )
stacklevelr* z&z>r_ z")r rI rl )rd Zquoter" r" r# r 2 s
c C s( dd l }t| trd}nd}|j|| S )Nr s ^[ -~]{0,200}[!-~]$z^[ -~]{0,200}[!-~]$)rer7 rX match)rd r Z _vb_patternr" r" r# rP > s
rP __main__)r r )r r )NNNN)N)1rw __version__ior r r collectionsr r4 r Z urllib.parser? Z email.parserr Z
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