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From Python 3.3
Note: BaseHTTPRequestHandler doesn't implement any HTTP request; see
SimpleHTTPRequestHandler for simple implementations of GET, HEAD and POST,
and CGIHTTPRequestHandler for CGI scripts.
It does, however, optionally implement HTTP/1.1 persistent connections,
as of version 0.3.
Notes on CGIHTTPRequestHandler
------------------------------
This class implements GET and POST requests to cgi-bin scripts.
If the os.fork() function is not present (e.g. on Windows),
subprocess.Popen() is used as a fallback, with slightly altered semantics.
In all cases, the implementation is intentionally naive -- all
requests are executed synchronously.
SECURITY WARNING: DON'T USE THIS CODE UNLESS YOU ARE INSIDE A FIREWALL
-- it may execute arbitrary Python code or external programs.
Note that status code 200 is sent prior to execution of a CGI script, so
scripts cannot send other status codes such as 302 (redirect).
XXX To do:
- log requests even later (to capture byte count)
- log user-agent header and other interesting goodies
- send error log to separate file
)absolute_importdivisionprint_functionunicode_literals)utils)*z0.6
HTTPServerBaseHTTPRequestHandlerhtml)client)parse) socketserverNa
Error response
Error response
Error code: %(code)d
Message: %(message)s.
Error code explanation: %(code)s - %(explain)s.
ztext/html;charset=utf-8c t | j dd dd dd S )N&z&z>)replacer s m/builddir/build/BUILD/cloudlinux-venv-1.0.7/venv/lib/python3.11/site-packages/future/backports/http/server.py _quote_htmlr s6 4<W % % - -c6 : : B B3 O OO c e Zd ZdZd ZdS )r c t j | | j dd \ }}t j | | _ || _ dS )z.Override server_bind to store the server name.N )r TCPServer server_bindsocket getsocknamegetfqdn server_name server_port)selfhostports r r zHTTPServer.server_bind sY **4000[,,..rr2
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S )mr
a HTTP request handler base class.
The following explanation of HTTP serves to guide you through the
code as well as to expose any misunderstandings I may have about
HTTP (so you don't need to read the code to figure out I'm wrong
:-).
HTTP (HyperText Transfer Protocol) is an extensible protocol on
top of a reliable stream transport (e.g. TCP/IP). The protocol
recognizes three parts to a request:
1. One line identifying the request type and path
2. An optional set of RFC-822-style headers
3. An optional data part
The headers and data are separated by a blank line.
The first line of the request has the form
where is a (case-sensitive) keyword such as GET or POST,
is a string containing path information for the request,
and should be the string "HTTP/1.0" or "HTTP/1.1".
is encoded using the URL encoding scheme (using %xx to signify
the ASCII character with hex code xx).
The specification specifies that lines are separated by CRLF but
for compatibility with the widest range of clients recommends
servers also handle LF. Similarly, whitespace in the request line
is treated sensibly (allowing multiple spaces between components
and allowing trailing whitespace).
Similarly, for output, lines ought to be separated by CRLF pairs
but most clients grok LF characters just fine.
If the first line of the request has the form
(i.e. is left out) then this is assumed to be an HTTP
0.9 request; this form has no optional headers and data part and
the reply consists of just the data.
The reply form of the HTTP 1.x protocol again has three parts:
1. One line giving the response code
2. An optional set of RFC-822-style headers
3. The data
Again, the headers and data are separated by a blank line.
The response code line has the form
where is the protocol version ("HTTP/1.0" or "HTTP/1.1"),
is a 3-digit response code indicating success or
failure of the request, and is an optional
human-readable string explaining what the response code means.
This server parses the request and the headers, and then calls a
function specific to the request type (). Specifically,
a request SPAM will be handled by a method do_SPAM(). If no
such method exists the server sends an error response to the
client. If it exists, it is called with no arguments:
do_SPAM()
Note that the request name is case sensitive (i.e. SPAM and spam
are different requests).
The various request details are stored in instance variables:
- client_address is the client IP address in the form (host,
port);
- command, path and version are the broken-down request line;
- headers is an instance of email.message.Message (or a derived
class) containing the header information;
- rfile is a file object open for reading positioned at the
start of the optional input data part;
- wfile is a file object open for writing.
IT IS IMPORTANT TO ADHERE TO THE PROTOCOL FOR WRITING!
The first thing to be written must be the response line. Then
follow 0 or more header lines, then a blank line, and then the
actual data (if any). The meaning of the header lines depends on
the command executed by the server; in most cases, when data is
returned, there should be at least one header line of the form
Content-type: /
where and should be registered MIME types,
e.g. "text/html" or "text/plain".
zPython/r z BaseHTTP/HTTP/0.9c , d| _ | j x| _ }d| _ t | j d }| d }|| _ | }t | dk r|\ }}}|dd dk r|
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S d S ) a' Parse a request (internal).
The request should be stored in self.raw_requestline; the results
are in self.command, self.path, self.request_version and
self.headers.
Return True for success, False for failure; on failure, an
error is sent back.
Nr z
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zHTTP/ zBad request version (%r)F/.r r )r r zHTTP/1.1)r r zInvalid HTTP Version (%s)GETz Bad HTTP/0.9 request type (%r)zBad request syntax (%r))_classz
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c X | d | dS )a7 Decide what to do with an "Expect: 100-continue" header.
If the client is expecting a 100 Continue response, we must
respond with either a 100 Continue or a final response before
waiting for the request body. The default is to always respond
with a 100 Continue. You can behave differently (for example,
reject unauthorized requests) by overriding this method.
This method should either return True (possibly after sending
a 100 Continue response) or send an error response and return
False.
d T)send_response_only
flush_headersr# s r rT z(BaseHTTPRequestHandler.handle_expect_100] s/
$$$ tr c h | j d | _ t | j dk r,d| _ d| _ d| _ | d dS | j s d| _ dS | sdS d| j z }t | | s | dd | j z dS t | | } | | j
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| d| _ Y d}~dS d}~ww xY w) zHandle a single HTTP request.
You normally don't need to override this method; see the class
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commands such as GET and POST.
i i r8 Nr do_ zUnsupported method (%r)zRequest timed out: %r)rN readlinerA rE rC r> r< rF r? r[ hasattrgetattrwfileflushr timeout log_error)r# mnamemethodes r handle_one_requestz)BaseHTTPRequestHandler.handle_one_requesto sR #':#6#6u#=#=D 4'((500#% ')$ ! $$$'
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a Send and log an error reply.
Arguments are the error code, and a detailed message.
The detailed message defaults to the short entry matching the
response code.
This sends an error response (so it must be called before any
output has been generated), logs the error, and finally sends
a piece of HTML explaining the error to the user.
)???rs Nzcode %d, message %s)codemessageexplainz Content-Typer7 r9 HEAD ) 0 zUTF-8r )
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send_response send_headererror_content_type end_headersr< rh writeencode)r# rt ru shortmsglongmsgrv contents r rF z!BaseHTTPRequestHandler.send_error s> - $t 4 Hgg - - - , Hggg - ? G ,dG<<<, [-A-AgVVW 4))) )@AAA w/// <6 ! !dckkd*6L6L J W^^GY ? ? @ @ @ @ @ " !kk6L6Ls %%c | | | || | d| | d| dS )zAdd the response header to the headers buffer and log the
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version and the current date.
ServerDateN) log_requestr^ r version_stringdate_time_stringr# rt ru s r r~ z$BaseHTTPRequestHandler.send_response sx
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N)r> r r r_ r` s r r z"BaseHTTPRequestHandler.end_headers sG : - - ' ' 0 0 0 . -r c t | d r;| j d | j g | _ d S d S )Nr r )rf rh r joinr r` s r r_ z$BaseHTTPRequestHandler.flush_headers sR 4* + + & J SXXd&: ; ; < < <#%D & &r -c t | d| j t | t | dS )zNLog an accepted request.
This is called by send_response().
z
"%s" %s %sN) log_messagerC r@ )r# rt sizes r r z"BaseHTTPRequestHandler.log_request sC
)3t99c$ii A A A A Ar c " | j |g|R dS )zLog an error.
This is called when a request cannot be fulfilled. By
default it passes the message on to log_message().
Arguments are the same as for log_message().
XXX This should go to the separate error log.
N)r r# formatargss r rk z BaseHTTPRequestHandler.log_error s% '$''''''r c t j | d| d||z d dS )a Log an arbitrary message.
This is used by all other logging functions. Override
it if you have specific logging wishes.
The first argument, FORMAT, is a format string for the
message to be logged. If the format string contains
any % escapes requiring parameters, they should be
specified as subsequent arguments (it's just like
printf!).
The client ip and current date/time are prefixed to
every message.
z - - [z]
N)sysstderrr address_stringlog_date_time_stringr s r r z"BaseHTTPRequestHandler.log_message sb "
--//// 335555 +++' ( ( ( ( (r c & | j dz | j z S )z*Return the server software version string. )server_version sys_versionr` s r r z%BaseHTTPRequestHandler.version_string s "S(4+;;;r c |t j }t j | \ }}}}}}}} }
d| j | || j | ||||fz } | S )z@Return the current date and time formatted for a message header.Nz#%s, %02d %3s %4d %02d:%02d:%02d GMT)timegmtime weekdayname monthname) r# timestampyearmonthdayhhmmsswdyzss r r z'BaseHTTPRequestHandler.date_time_string sk I15Y1G1G.eS"b"b!Q 1 $T^E*DB5
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d|| j | ||||fz } | S )z.Return the current time formatted for logging.z %02d/%3s/%04d %02d:%02d:%02d)r localtimer ) r# nowr r r r r r xr r r s r r z+BaseHTTPRequestHandler.log_date_time_string* sW ikk04s0C0C-eS"b"aA *T^E*D"b".>
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NJanFebMarAprMayJunJulAugSepOctNovDecc | j d S )zReturn the client address.r )client_addressr` s r r z%BaseHTTPRequestHandler.address_string8 s "1%%r HTTP/1.0r] )Continuez!Request received, please continuee )zSwitching Protocolsz.Switching to new protocol; obey Upgrade headerrx )OKz#Request fulfilled, document follows )Createdz Document created, URL follows )Acceptedz/Request accepted, processing continues off-line )z Non-Authoritative Informationz Request fulfilled from cachery )z
No Contentz"Request fulfilled, nothing follows )z
Reset Contentz#Clear input form for further input. )zPartial ContentzPartial content follows.i, )zMultiple Choicesz,Object has several resources -- see URI list- )zMoved Permanentlyz(Object moved permanently -- see URI listi. )Found(Object moved temporarily -- see URI listi/ )z See Otherz'Object moved -- see Method and URL listrz )z Not Modifiedz)Document has not changed since given timei1 )z Use ProxyzAYou must use proxy specified in Location to access this resource.i3 )zTemporary Redirectr r1 )z Bad Requestz(Bad request syntax or unsupported methodi ) Unauthorizedz*No permission -- see authorization schemesi )zPayment Requiredz"No payment -- see charging schemes ) Forbiddenz0Request forbidden -- authorization will not help )z Not Foundz Nothing matches the given URIi )zMethod Not Allowedz.Specified method is invalid for this resource.i )zNot Acceptablez&URI not available in preferred format.i )z Proxy Authentication Requiredz8You must authenticate with this proxy before proceeding.i )zRequest Timeoutz#Request timed out; try again later.i )ConflictzRequest conflict.i )Gonez6URI no longer exists and has been permanently removed.i )zLength Requiredz#Client must specify Content-Length.i )zPrecondition Failedz!Precondition in headers is false.i )zRequest Entity Too LargezEntity is too large.rb )zRequest-URI Too LongzURI is too long.i )zUnsupported Media Typez"Entity body in unsupported format.i )z Requested Range Not Satisfiablez Cannot satisfy request range.i )zExpectation Failedz(Expect condition could not be satisfied.)zPrecondition Requiredz9The origin server requires the request to be conditional.)zToo Many RequestszPThe user has sent too many requests in a given amount of time ("rate limiting").)z Request Header Fields Too LargezWThe server is unwilling to process the request because its header fields are too large.)zInternal Server Errorz Server got itself in trouble)zNot Implementedz&Server does not support this operation)z Bad Gatewayz,Invalid responses from another server/proxy.)zService Unavailablez8The server cannot process the request due to a high load)zGateway Timeoutz4The gateway server did not receive a timely response)zHTTP Version Not SupportedzCannot fulfill request.)z Network Authentication Requiredz8The client needs to authenticate to gain network access.)
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S )SimpleHTTPRequestHandleraW Simple HTTP request handler with GET and HEAD commands.
This serves files from the current directory and any of its
subdirectories. The MIME type for files is determined by
calling the .guess_type() method.
The GET and HEAD requests are identical except that the HEAD
request omits the actual contents of the file.
z SimpleHTTP/c | }|r1| || j | dS dS )zServe a GET request.N) send_headcopyfilerh r9 r# fs r do_GETz SimpleHTTPRequestHandler.do_GET sJ NN MM!TZ ( ( (
GGIIIII r c ^ | }|r| dS dS )zServe a HEAD request.N)r r9 r s r do_HEADz SimpleHTTPRequestHandler.do_HEAD s4 NN
GGIIIII r c | | j }d}t j | r| j d sI| d | d| j dz | dS dD ]E}t j || }t j | r|} nF|
| S | | } t |d }n'# t $ r | dd Y dS w xY w| d | d
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| |j | |S )a{ Common code for GET and HEAD commands.
This sends the response code and MIME headers.
Return value is either a file object (which has to be copied
to the outputfile by the caller unless the command was HEAD,
and must be closed by the caller under all circumstances), or
None, in which case the caller has nothing further to do.
Nr2 r Location)z
index.htmlz index.htmrbr zFile not foundrx Content-typeContent-Length z
Last-Modified)translate_pathrK osisdirendswithr~ r r r existslist_directory
guess_typeopenIOErrorrF fstatfilenor@ r st_mtime)r# rK r indexctypefss r r z"SimpleHTTPRequestHandler.send_head s ""49--
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! )3r!u::666 $*?*? *L*LMMM s D# # EEc t j | }n,# t j $ r | dd Y dS w xY w| d g }t j t j | j }t j }d|z }| d | d | d |z | d
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| | } t% j } | | | d | d | dd|z | dt1 t3 | | | S )zHelper to produce a directory listing (absent index.html).
Return value is either a file object, or None (indicating an
error). In either case, the headers are sent, making the
interface the same as for send_head().
r z No permission to list directoryNc * | S r )rS )as r z9SimpleHTTPRequestHandler.list_directory.. s r )keyzDirectory listing for %szZz
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r r z'SimpleHTTPRequestHandler.list_directory s :d##DDx OOC!B C C C44
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t j fv rat j || }|S )zTranslate a /-separated PATH to the local filename syntax.
Components that mean special things to the local file system
(e.g. drive or directory names) are ignored. (XXX They should
probably be diagnosed.)
?r r #r2 N)
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splitdrivecurdirpardirr )r# rK rV worddriveheads r r z'SimpleHTTPRequestHandler.translate_path
s zz#a #zz#a #!,"6t"<"<==
3tU##y{{ , ,D ',,T22KE4 t,,JD$ 29---x7<<d++DD r c 0 t j || dS )a Copy all data between two file objects.
The SOURCE argument is a file object open for reading
(or anything with a read() method) and the DESTINATION
argument is a file object open for writing (or
anything with a write() method).
The only reason for overriding this would be to change
the block size or perhaps to replace newlines by CRLF
-- note however that this the default server uses this
to copy binary data as well.
N)shutil copyfileobj)r# source
outputfiles r r z!SimpleHTTPRequestHandler.copyfile# s 6:.....r c t j | \ }}|| j v r
| j | S | }|| j v r
| j | S | j d S )a Guess the type of a file.
Argument is a PATH (a filename).
Return value is a string of the form type/subtype,
usable for a MIME Content-type header.
The default implementation looks the file's extension
up in the table self.extensions_map, using application/octet-stream
as a default; however it would be permissible (if
slow) to look inside the data to make a better guess.
r8 )r- splitextextensions_maprS )r# rK baseexts r r z#SimpleHTTPRequestHandler.guess_type3 sk &t,, c $% % %&s+ +iikk $% % %&s+ +&r* *r zapplication/octet-streamz
text/plain)r8 .pyz.cz.hN)r& r' r( r r r r r r r r r r mimetypesinitedinit types_mapcopyr> updater* r r r r s #[0N ' ' 'R2 2 2h ,/ / / + + +0 (--//N &
r r c | d }g }|dd D ]:}|dk r| |r|dk r| | ;|r<| }|r%|dk r| d}n |dk rd}nd}dd | z |f}d | }|S )a`
Given a URL path, remove extra '/'s and '.' path elements and collapse
any '..' references and returns a colllapsed path.
Implements something akin to RFC-2396 5.2 step 6 to parse relative paths.
The utility of this function is limited to is_cgi method and helps
preventing some security attacks.
Returns: A tuple of (head, tail) where tail is everything after the final /
and head is everything before it. Head will always start with a '/' and,
if it contains anything else, never have a trailing '/'.
Raises: IndexError if too many '..' occur within the path.
r2 Nz..r3 r8 )rD popr r )rK
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head_partspart tail_part splitpathcollapsed_paths r _url_collapse_pathrQ X s $ C JJ3B3 & & 4<< NN
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+++Y7IXXi((N r c t rt S ddl} n# t $ r Y dS w xY w | d d a n># t $ r1 dt d | D z a Y nw xY wt S )z$Internal routine to get nobody's uidr NrI nobodyr r c 3 & K | ] }|d V
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CGIHTTPRequestHandlerzComplete HTTP server with GET, HEAD and POST commands.
GET and HEAD also support running CGI scripts.
The POST command is *only* implemented for CGI scripts.
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