FM / paste

/opt/alt/python37/lib/python3.7/site-packages/paste/

/opt/alt/python37/lib/python3.7/site-packages/paste

Name	Size	Mode	Actions
auth/	-	0755	rm
cowbell/	-	0755	rm
debug/	-	0755	rm
evalexception/	-	0755	rm
exceptions/	-	0755	rm
util/	-	0755	rm
__pycache__/	-	0755	rm
cascade.py	4508	0644	edit dl rm
cascade.pyc	4475	0644	edit dl rm
cascade.pyo	4475	0644	edit dl rm
cgiapp.py	9590	0644	edit dl rm
cgiapp.pyc	8554	0644	edit dl rm
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cgitb_catcher.py	3752	0644	edit dl rm
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config.py	4312	0644	edit dl rm
config.pyc	5284	0644	edit dl rm
config.pyo	5284	0644	edit dl rm
errordocument.py	13777	0644	edit dl rm
errordocument.pyc	13080	0644	edit dl rm
errordocument.pyo	13080	0644	edit dl rm
fileapp.py	13608	0644	edit dl rm
fileapp.pyc	13352	0644	edit dl rm
fileapp.pyo	13218	0644	edit dl rm
fixture.py	57992	0644	edit dl rm
fixture.py.stdlib	58075	0644	edit dl rm
fixture.pyc	60726	0644	edit dl rm
fixture.pyo	58453	0644	edit dl rm
flup_session.py	3941	0644	edit dl rm
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gzipper.py	3692	0644	edit dl rm
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httpexceptions.py	24222	0644	edit dl rm
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httpheaders.py	43090	0644	edit dl rm
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httpserver.py	55662	0644	edit dl rm
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lint.py	14999	0644	edit dl rm
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lint.pyo	13772	0644	edit dl rm
modpython.py	7976	0644	edit dl rm
modpython.pyc	8953	0644	edit dl rm
modpython.pyo	8953	0644	edit dl rm
pony.py	2279	0644	edit dl rm
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progress.py	8162	0644	edit dl rm
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proxy.py	10181	0644	edit dl rm
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recursive.py	14664	0644	edit dl rm
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registry.py	22193	0644	edit dl rm
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reloader.py	6010	0644	edit dl rm
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request.py	14145	0644	edit dl rm
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response.py	7659	0644	edit dl rm
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session.py	11335	0644	edit dl rm
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transaction.py	4362	0644	edit dl rm
transaction.pyc	5857	0644	edit dl rm
transaction.pyo	5857	0644	edit dl rm
translogger.py	4812	0644	edit dl rm
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url.py	14624	0644	edit dl rm
url.pyc	18581	0644	edit dl rm
url.pyo	18581	0644	edit dl rm
urlmap.py	9032	0644	edit dl rm
urlmap.pyc	9773	0644	edit dl rm
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urlparser.py	26424	0644	edit dl rm
urlparser.pyc	22670	0644	edit dl rm
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wsgilib.py	20134	0644	edit dl rm
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wsgiwrappers.py	22165	0644	edit dl rm
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wsgiwrappers.pyo	24450	0644	edit dl rm

Edit: /opt/alt/python37/lib/python3.7/site-packages/paste/fileapp.py (13608B)

# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
# (c) 2005 Ian Bicking, Clark C. Evans and contributors
# This module is part of the Python Paste Project and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
"""
This module handles sending static content such as in-memory data or
files.  At this time it has cache helpers and understands the
if-modified-since request header.
"""

import os, time, mimetypes, zipfile, tarfile
from paste.httpexceptions import *
from paste.httpheaders import *

CACHE_SIZE = 4096
BLOCK_SIZE = 4096 * 16

__all__ = ['DataApp', 'FileApp', 'DirectoryApp', 'ArchiveStore']

class DataApp(object):
    """
    Returns an application that will send content in a single chunk,
    this application has support for setting cache-control and for
    responding to conditional (or HEAD) requests.

Constructor Arguments:

``content``     the content being sent to the client

``headers``     the headers to send /w the response

The remaining ``kwargs`` correspond to headers, where the
        underscore is replaced with a dash.  These values are only
        added to the headers if they are not already provided; thus,
        they can be used for default values.  Examples include, but
        are not limited to:

``content_type``
            ``content_encoding``
            ``content_location``

``cache_control()``

This method provides validated construction of the ``Cache-Control``
        header as well as providing for automated filling out of the
        ``EXPIRES`` header for HTTP/1.0 clients.

``set_content()``

This method provides a mechanism to set the content after the
        application has been constructed.  This method does things
        like changing ``Last-Modified`` and ``Content-Length`` headers.

"""

allowed_methods = ('GET', 'HEAD')

def __init__(self, content, headers=None, allowed_methods=None,
                 **kwargs):
        assert isinstance(headers, (type(None), list))
        self.expires = None
        self.content = None
        self.content_length = None
        self.last_modified = 0
        if allowed_methods is not None:
            self.allowed_methods = allowed_methods
        self.headers = headers or []
        for (k, v) in kwargs.items():
            header = get_header(k)
            header.update(self.headers, v)
        ACCEPT_RANGES.update(self.headers, bytes=True)
        if not CONTENT_TYPE(self.headers):
            CONTENT_TYPE.update(self.headers)
        if content is not None:
            self.set_content(content)

def cache_control(self, **kwargs):
        self.expires = CACHE_CONTROL.apply(self.headers, **kwargs) or None
        return self

def set_content(self, content, last_modified=None):
        assert content is not None
        if last_modified is None:
            self.last_modified = time.time()
        else:
            self.last_modified = last_modified
        self.content = content
        self.content_length = len(content)
        LAST_MODIFIED.update(self.headers, time=self.last_modified)
        return self

def content_disposition(self, **kwargs):
        CONTENT_DISPOSITION.apply(self.headers, **kwargs)
        return self

def __call__(self, environ, start_response):
        method = environ['REQUEST_METHOD'].upper()
        if method not in self.allowed_methods:
            exc = HTTPMethodNotAllowed(
                'You cannot %s a file' % method,
                headers=[('Allow', ','.join(self.allowed_methods))])
            return exc(environ, start_response)
        return self.get(environ, start_response)

def calculate_etag(self):
        return '"%s-%s"' % (self.last_modified, self.content_length)

def get(self, environ, start_response):
        headers = self.headers[:]
        current_etag = self.calculate_etag()
        ETAG.update(headers, current_etag)
        if self.expires is not None:
            EXPIRES.update(headers, delta=self.expires)

try:
            client_etags = IF_NONE_MATCH.parse(environ)
            if client_etags:
                for etag in client_etags:
                    if etag == current_etag or etag == '*':
                        # horribly inefficient, n^2 performance, yuck!
                        for head in list_headers(entity=True):
                            head.delete(headers)
                        start_response('304 Not Modified', headers)
                        return ['']
        except HTTPBadRequest, exce:
            return exce.wsgi_application(environ, start_response)

# If we get If-None-Match and If-Modified-Since, and
        # If-None-Match doesn't match, then we should not try to
        # figure out If-Modified-Since (which has 1-second granularity
        # and just isn't as accurate)
        if not client_etags:
            try:
                client_clock = IF_MODIFIED_SINCE.parse(environ)
                if client_clock >= int(self.last_modified):
                    # horribly inefficient, n^2 performance, yuck!
                    for head in list_headers(entity=True):
                        head.delete(headers)
                    start_response('304 Not Modified', headers)
                    return [''] # empty body
            except HTTPBadRequest, exce:
                return exce.wsgi_application(environ, start_response)

(lower, upper) = (0, self.content_length - 1)
        range = RANGE.parse(environ)
        if range and 'bytes' == range[0] and 1 == len(range[1]):
            (lower, upper) = range[1][0]
            upper = upper or (self.content_length - 1)
            if upper >= self.content_length or lower > upper:
                return HTTPRequestRangeNotSatisfiable((
                  "Range request was made beyond the end of the content,\r\n"
                  "which is %s long.\r\n  Range: %s\r\n") % (
                     self.content_length, RANGE(environ))
                ).wsgi_application(environ, start_response)

content_length = upper - lower + 1
        CONTENT_RANGE.update(headers, first_byte=lower, last_byte=upper,
                            total_length = self.content_length)
        CONTENT_LENGTH.update(headers, content_length)
        if content_length == self.content_length:
            start_response('200 OK', headers)
        else:
            start_response('206 Partial Content', headers)
        if self.content is not None:
            return [self.content[lower:upper+1]]
        return (lower, content_length)

class FileApp(DataApp):
    """
    Returns an application that will send the file at the given
    filename.  Adds a mime type based on ``mimetypes.guess_type()``.
    See DataApp for the arguments beyond ``filename``.
    """

def __init__(self, filename, headers=None, **kwargs):
        self.filename = filename
        content_type, content_encoding = self.guess_type()
        if content_type and 'content_type' not in kwargs:
            kwargs['content_type'] = content_type
        if content_encoding and 'content_encoding' not in kwargs:
            kwargs['content_encoding'] = content_encoding
        DataApp.__init__(self, None, headers, **kwargs)

def guess_type(self):
        return mimetypes.guess_type(self.filename)

def update(self, force=False):
        stat = os.stat(self.filename)
        if not force and stat.st_mtime == self.last_modified:
            return
        self.last_modified = stat.st_mtime
        if stat.st_size < CACHE_SIZE:
            fh = open(self.filename,"rb")
            self.set_content(fh.read(), stat.st_mtime)
            fh.close()
        else:
            self.content = None
            self.content_length = stat.st_size
            # This is updated automatically if self.set_content() is
            # called
            LAST_MODIFIED.update(self.headers, time=self.last_modified)

def get(self, environ, start_response):
        is_head = environ['REQUEST_METHOD'].upper() == 'HEAD'
        if 'max-age=0' in CACHE_CONTROL(environ).lower():
            self.update(force=True) # RFC 2616 13.2.6
        else:
            self.update()
        if not self.content:
            if not os.path.exists(self.filename):
                exc = HTTPNotFound(
                    'The resource does not exist',
                    comment="No file at %r" % self.filename)
                return exc(environ, start_response)
            try:
                file = open(self.filename, 'rb')
            except (IOError, OSError), e:
                exc = HTTPForbidden(
                    'You are not permitted to view this file (%s)' % e)
                return exc.wsgi_application(
                    environ, start_response)
        retval = DataApp.get(self, environ, start_response)
        if isinstance(retval, list):
            # cached content, exception, or not-modified
            if is_head:
                return ['']
            return retval
        (lower, content_length) = retval
        if is_head:
            return ['']
        file.seek(lower)
        file_wrapper = environ.get('wsgi.file_wrapper', None)
        if file_wrapper:
            return file_wrapper(file, BLOCK_SIZE)
        else:
            return _FileIter(file, size=content_length)

class _FileIter(object):

def __init__(self, file, block_size=None, size=None):
        self.file = file
        self.size = size
        self.block_size = block_size or BLOCK_SIZE

def __iter__(self):
        return self

def next(self):
        chunk_size = self.block_size
        if self.size is not None:
            if chunk_size > self.size:
                chunk_size = self.size
            self.size -= chunk_size
        data = self.file.read(chunk_size)
        if not data:
            raise StopIteration
        return data

def close(self):
        self.file.close()

class DirectoryApp(object):
    """
    Returns an application that dispatches requests to corresponding FileApps based on PATH_INFO.
    FileApp instances are cached. This app makes sure not to serve any files that are not in a subdirectory.
    To customize FileApp creation override ``DirectoryApp.make_fileapp``
    """

def __init__(self, path):
        self.path = os.path.abspath(path)
        if not self.path.endswith(os.path.sep):
            self.path += os.path.sep
        assert os.path.isdir(self.path)
        self.cached_apps = {}

make_fileapp = FileApp

def __call__(self, environ, start_response):
        path_info = environ['PATH_INFO']
        app = self.cached_apps.get(path_info)
        if app is None:
            path = os.path.join(self.path, path_info.lstrip('/'))
            if not os.path.normpath(path).startswith(self.path):
                app = HTTPForbidden()
            elif os.path.isfile(path):
                app = self.make_fileapp(path)
                self.cached_apps[path_info] = app
            else:
                app = HTTPNotFound(comment=path)
        return app(environ, start_response)

class ArchiveStore(object):
    """
    Returns an application that serves up a DataApp for items requested
    in a given zip or tar archive.

Constructor Arguments:

``filepath``    the path to the archive being served

``cache_control()``

This method provides validated construction of the ``Cache-Control``
        header as well as providing for automated filling out of the
        ``EXPIRES`` header for HTTP/1.0 clients.
    """

def __init__(self, filepath):
        if zipfile.is_zipfile(filepath):
            self.archive = zipfile.ZipFile(filepath,"r")
        elif tarfile.is_tarfile(filepath):
            self.archive = tarfile.TarFileCompat(filepath,"r")
        else:
            raise AssertionError("filepath '%s' is not a zip or tar " % filepath)
        self.expires = None
        self.last_modified = time.time()
        self.cache = {}

def cache_control(self, **kwargs):
        self.expires = CACHE_CONTROL.apply(self.headers, **kwargs) or None
        return self

def __call__(self, environ, start_response):
        path = environ.get("PATH_INFO","")
        if path.startswith("/"):
            path = path[1:]
        application = self.cache.get(path)
        if application:
            return application(environ, start_response)
        try:
            info = self.archive.getinfo(path)
        except KeyError:
            exc = HTTPNotFound("The file requested, '%s', was not found." % path)
            return exc.wsgi_application(environ, start_response)
        if info.filename.endswith("/"):
            exc = HTTPNotFound("Path requested, '%s', is not a file." % path)
            return exc.wsgi_application(environ, start_response)
        content_type, content_encoding = mimetypes.guess_type(info.filename)
        # 'None' is not a valid content-encoding, so don't set the header if
        # mimetypes.guess_type returns None
        if content_encoding is not None:
            app = DataApp(None, content_type = content_type,
                                content_encoding = content_encoding)
        else:
            app = DataApp(None, content_type = content_type)
        app.set_content(self.archive.read(path),
                time.mktime(info.date_time + (0,0,0)))
        self.cache[path] = app
        app.expires = self.expires
        return app(environ, start_response)

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