def _safe_caching_headers():
"""Adds `Origin`_ to the `Vary`_ header to ensure caching works properly.
Except in IE because it will disable caching completely. The caching
strategy in that case is out of the scope of this library.
https://blogs.msdn.microsoft.com/ieinternals/2009/06/17/vary-with-care/
"""
uah = cherrypy.serving.request.headers.get('User-Agent', '')
ua = httpagentparser.detect(uah)
IE = 'Microsoft Internet Explorer'
if ua.get('browser', {}).get('name') != IE:
set_vary_header(cherrypy.serving.response, "Origin")
def _safe_caching_headers():
"""Adds `Origin`_ to the `Vary`_ header to ensure caching works properly.
Except in IE because it will disable caching completely. The caching
strategy in that case is out of the scope of this library.
https://blogs.msdn.microsoft.com/ieinternals/2009/06/17/vary-with-care/
"""
uah = cherrypy.serving.request.headers.get('User-Agent', '')
ua = httpagentparser.detect(uah)
IE = 'Microsoft Internet Explorer'
if ua.get('browser', {}).get('name') != IE:
set_vary_header(cherrypy.serving.response, "Origin")
def gzip(compress_level = 5, mime_types = ['text/html', 'text/plain'], debug = False):
request = cherrypy.serving.request
response = cherrypy.serving.response
set_vary_header(response, 'Accept-Encoding')
if not response.body:
if debug:
cherrypy.log('No response body', context='TOOLS.GZIP')
return
if getattr(request, 'cached', False):
if debug:
cherrypy.log('Not gzipping cached response', context='TOOLS.GZIP')
return
acceptable = request.headers.elements('Accept-Encoding')
if not acceptable:
if debug:
cherrypy.log('No Accept-Encoding', context='TOOLS.GZIP')
return
ct = response.headers.get('Content-Type', '').split(';')[0]
for coding in acceptable:
if coding.value == 'identity' and coding.qvalue != 0:
if debug:
cherrypy.log('Non-zero identity qvalue: %s' % coding, context='TOOLS.GZIP')
return
if coding.value in ('gzip', 'x-gzip'):
if coding.qvalue == 0:
if debug:
cherrypy.log('Zero gzip qvalue: %s' % coding, context='TOOLS.GZIP')
return
if ct not in mime_types:
found = False
if '/' in ct:
ct_media_type, ct_sub_type = ct.split('/')
for mime_type in mime_types:
if '/' in mime_type:
media_type, sub_type = mime_type.split('/')
if ct_media_type == media_type:
if sub_type == '*':
found = True
break
elif '+' in sub_type and '+' in ct_sub_type:
ct_left, ct_right = ct_sub_type.split('+')
left, right = sub_type.split('+')
if left == '*' and ct_right == right:
found = True
break
if not found:
if debug:
cherrypy.log('Content-Type %s not in mime_types %r' % (ct, mime_types), context='TOOLS.GZIP')
return
if debug:
cherrypy.log('Gzipping', context='TOOLS.GZIP')
response.headers['Content-Encoding'] = 'gzip'
response.body = compress(response.body, compress_level)
if 'Content-Length' in response.headers:
del response.headers['Content-Length']
return
if debug:
cherrypy.log('No acceptable encoding found.', context='GZIP')
cherrypy.HTTPError(406, 'identity, gzip').set_response()
def gzip(compress_level=5, mime_types=["text/html", "text/plain"], debug=False):
"""Try to gzip the response body if Content-Type in mime_types.
cherrypy.response.headers['Content-Type'] must be set to one of the
values in the mime_types arg before calling this function.
The provided list of mime-types must be of one of the following form:
* type/subtype
* type/*
* type/*+subtype
No compression is performed if any of the following hold:
* The client sends no Accept-Encoding request header
* No 'gzip' or 'x-gzip' is present in the Accept-Encoding header
* No 'gzip' or 'x-gzip' with a qvalue > 0 is present
* The 'identity' value is given with a qvalue > 0.
"""
request = cherrypy.serving.request
response = cherrypy.serving.response
set_vary_header(response, "Accept-Encoding")
if not response.body:
# Response body is empty (might be a 304 for instance)
if debug:
cherrypy.log("No response body", context="TOOLS.GZIP")
return
# If returning cached content (which should already have been gzipped),
# don't re-zip.
if getattr(request, "cached", False):
if debug:
cherrypy.log("Not gzipping cached response", context="TOOLS.GZIP")
return
acceptable = request.headers.elements("Accept-Encoding")
if not acceptable:
# If no Accept-Encoding field is present in a request,
# the server MAY assume that the client will accept any
# content coding. In this case, if "identity" is one of
# the available content-codings, then the server SHOULD use
# the "identity" content-coding, unless it has additional
# information that a different content-coding is meaningful
# to the client.
if debug:
cherrypy.log("No Accept-Encoding", context="TOOLS.GZIP")
return
ct = response.headers.get("Content-Type", "").split(";")[0]
for coding in acceptable:
if coding.value == "identity" and coding.qvalue != 0:
if debug:
cherrypy.log("Non-zero identity qvalue: %s" % coding, context="TOOLS.GZIP")
return
if coding.value in ("gzip", "x-gzip"):
if coding.qvalue == 0:
if debug:
cherrypy.log("Zero gzip qvalue: %s" % coding, context="TOOLS.GZIP")
return
if ct not in mime_types:
# If the list of provided mime-types contains tokens
# such as 'text/*' or 'application/*+xml',
# we go through them and find the most appropriate one
# based on the given content-type.
# The pattern matching is only caring about the most
# common cases, as stated above, and doesn't support
# for extra parameters.
found = False
if "/" in ct:
ct_media_type, ct_sub_type = ct.split("/")
for mime_type in mime_types:
if "/" in mime_type:
media_type, sub_type = mime_type.split("/")
if ct_media_type == media_type:
if sub_type == "*":
found = True
break
elif "+" in sub_type and "+" in ct_sub_type:
ct_left, ct_right = ct_sub_type.split("+")
left, right = sub_type.split("+")
if left == "*" and ct_right == right:
found = True
break
if not found:
if debug:
cherrypy.log("Content-Type %s not in mime_types %r" % (ct, mime_types), context="TOOLS.GZIP")
return
if debug:
cherrypy.log("Gzipping", context="TOOLS.GZIP")
# Return a generator that compresses the page
response.headers["Content-Encoding"] = "gzip"
response.body = compress(response.body, compress_level)
if "Content-Length" in response.headers:
# Delete Content-Length header so finalize() recalcs it.
del response.headers["Content-Length"]
return
if debug:
cherrypy.log("No acceptable encoding found.", context="GZIP")
cherrypy.HTTPError(406, "identity, gzip").set_response()
def gzip(compress_level=5,
mime_types=['text/html', 'text/plain'],
debug=False):
request = cherrypy.serving.request
response = cherrypy.serving.response
set_vary_header(response, 'Accept-Encoding')
if not response.body:
if debug:
cherrypy.log('No response body', context='TOOLS.GZIP')
return
if getattr(request, 'cached', False):
if debug:
cherrypy.log('Not gzipping cached response', context='TOOLS.GZIP')
return
acceptable = request.headers.elements('Accept-Encoding')
if not acceptable:
if debug:
cherrypy.log('No Accept-Encoding', context='TOOLS.GZIP')
return
ct = response.headers.get('Content-Type', '').split(';')[0]
for coding in acceptable:
if coding.value == 'identity' and coding.qvalue != 0:
if debug:
cherrypy.log('Non-zero identity qvalue: %s' % coding,
context='TOOLS.GZIP')
return
if coding.value in ('gzip', 'x-gzip'):
if coding.qvalue == 0:
if debug:
cherrypy.log('Zero gzip qvalue: %s' % coding,
context='TOOLS.GZIP')
return
if ct not in mime_types:
found = False
if '/' in ct:
ct_media_type, ct_sub_type = ct.split('/')
for mime_type in mime_types:
if '/' in mime_type:
media_type, sub_type = mime_type.split('/')
if ct_media_type == media_type:
if sub_type == '*':
found = True
break
elif '+' in sub_type and '+' in ct_sub_type:
ct_left, ct_right = ct_sub_type.split('+')
left, right = sub_type.split('+')
if left == '*' and ct_right == right:
found = True
break
if not found:
if debug:
cherrypy.log('Content-Type %s not in mime_types %r' %
(ct, mime_types),
context='TOOLS.GZIP')
return
if debug:
cherrypy.log('Gzipping', context='TOOLS.GZIP')
response.headers['Content-Encoding'] = 'gzip'
response.body = compress(response.body, compress_level)
if 'Content-Length' in response.headers:
del response.headers['Content-Length']
return
if debug:
cherrypy.log('No acceptable encoding found.', context='GZIP')
cherrypy.HTTPError(406, 'identity, gzip').set_response()
def gzip(compress_level=5,
mime_types=['text/html', 'text/plain'],
debug=False):
"""Try to gzip the response body if Content-Type in mime_types.
cherrypy.response.headers['Content-Type'] must be set to one of the
values in the mime_types arg before calling this function.
The provided list of mime-types must be of one of the following form:
* type/subtype
* type/*
* type/*+subtype
No compression is performed if any of the following hold:
* The client sends no Accept-Encoding request header
* No 'gzip' or 'x-gzip' is present in the Accept-Encoding header
* No 'gzip' or 'x-gzip' with a qvalue > 0 is present
* The 'identity' value is given with a qvalue > 0.
"""
request = cherrypy.serving.request
response = cherrypy.serving.response
set_vary_header(response, "Accept-Encoding")
if not response.body:
# Response body is empty (might be a 304 for instance)
if debug:
cherrypy.log('No response body', context='TOOLS.GZIP')
return
# If returning cached content (which should already have been gzipped),
# don't re-zip.
if getattr(request, "cached", False):
if debug:
cherrypy.log('Not gzipping cached response', context='TOOLS.GZIP')
return
acceptable = request.headers.elements('Accept-Encoding')
if not acceptable:
# If no Accept-Encoding field is present in a request,
# the server MAY assume that the client will accept any
# content coding. In this case, if "identity" is one of
# the available content-codings, then the server SHOULD use
# the "identity" content-coding, unless it has additional
# information that a different content-coding is meaningful
# to the client.
if debug:
cherrypy.log('No Accept-Encoding', context='TOOLS.GZIP')
return
ct = response.headers.get('Content-Type', '').split(';')[0]
for coding in acceptable:
if coding.value == 'identity' and coding.qvalue != 0:
if debug:
cherrypy.log('Non-zero identity qvalue: %s' % coding,
context='TOOLS.GZIP')
return
if coding.value in ('gzip', 'x-gzip'):
if coding.qvalue == 0:
if debug:
cherrypy.log('Zero gzip qvalue: %s' % coding,
context='TOOLS.GZIP')
return
if ct not in mime_types:
# If the list of provided mime-types contains tokens
# such as 'text/*' or 'application/*+xml',
# we go through them and find the most appropriate one
# based on the given content-type.
# The pattern matching is only caring about the most
# common cases, as stated above, and doesn't support
# for extra parameters.
found = False
if '/' in ct:
ct_media_type, ct_sub_type = ct.split('/')
for mime_type in mime_types:
if '/' in mime_type:
media_type, sub_type = mime_type.split('/')
if ct_media_type == media_type:
if sub_type == '*':
found = True
break
elif '+' in sub_type and '+' in ct_sub_type:
ct_left, ct_right = ct_sub_type.split('+')
left, right = sub_type.split('+')
if left == '*' and ct_right == right:
found = True
break
if not found:
if debug:
cherrypy.log('Content-Type %s not in mime_types %r' %
(ct, mime_types),
context='TOOLS.GZIP')
return
if debug:
cherrypy.log('Gzipping', context='TOOLS.GZIP')
# Return a generator that compresses the page
response.headers['Content-Encoding'] = 'gzip'
response.body = compress(response.body, compress_level)
if "Content-Length" in response.headers:
# Delete Content-Length header so finalize() recalcs it.
del response.headers["Content-Length"]
return
if debug:
cherrypy.log('No acceptable encoding found.', context='GZIP')
cherrypy.HTTPError(406, "identity, gzip").set_response()
def gzip(compress_level=5, mime_types=['text/html', 'text/plain'], debug=False):
"""Try to gzip the response body if Content-Type in mime_types.
cherrypy.response.headers['Content-Type'] must be set to one of the
values in the mime_types arg before calling this function.
No compression is performed if any of the following hold:
* The client sends no Accept-Encoding request header
* No 'gzip' or 'x-gzip' is present in the Accept-Encoding header
* No 'gzip' or 'x-gzip' with a qvalue > 0 is present
* The 'identity' value is given with a qvalue > 0.
"""
request = cherrypy.serving.request
response = cherrypy.serving.response
set_vary_header(response, "Accept-Encoding")
if not response.body:
# Response body is empty (might be a 304 for instance)
if debug:
cherrypy.log('No response body', context='TOOLS.GZIP')
return
# If returning cached content (which should already have been gzipped),
# don't re-zip.
if getattr(request, "cached", False):
if debug:
cherrypy.log('Not gzipping cached response', context='TOOLS.GZIP')
return
acceptable = request.headers.elements('Accept-Encoding')
if not acceptable:
# If no Accept-Encoding field is present in a request,
# the server MAY assume that the client will accept any
# content coding. In this case, if "identity" is one of
# the available content-codings, then the server SHOULD use
# the "identity" content-coding, unless it has additional
# information that a different content-coding is meaningful
# to the client.
if debug:
cherrypy.log('No Accept-Encoding', context='TOOLS.GZIP')
return
ct = response.headers.get('Content-Type', '').split(';')[0]
for coding in acceptable:
if coding.value == 'identity' and coding.qvalue != 0:
if debug:
cherrypy.log('Non-zero identity qvalue: %r' % coding,
context='TOOLS.GZIP')
return
if coding.value in ('gzip', 'x-gzip'):
if coding.qvalue == 0:
if debug:
cherrypy.log('Zero gzip qvalue: %r' % coding,
context='TOOLS.GZIP')
return
if ct not in mime_types:
if debug:
cherrypy.log('Content-Type %r not in mime_types %r' %
(ct, mime_types), context='TOOLS.GZIP')
return
if debug:
cherrypy.log('Gzipping', context='TOOLS.GZIP')
# Return a generator that compresses the page
response.headers['Content-Encoding'] = 'gzip'
response.body = compress(response.body, compress_level)
if "Content-Length" in response.headers:
# Delete Content-Length header so finalize() recalcs it.
del response.headers["Content-Length"]
return
if debug:
cherrypy.log('No acceptable encoding found.', context='GZIP')
cherrypy.HTTPError(406, "identity, gzip").set_response()
def gzip(compress_level=5,
mime_types=['text/html', 'text/plain'],
debug=False):
"""Try to gzip the response body if Content-Type in mime_types.
cherrypy.response.headers['Content-Type'] must be set to one of the
values in the mime_types arg before calling this function.
No compression is performed if any of the following hold:
* The client sends no Accept-Encoding request header
* No 'gzip' or 'x-gzip' is present in the Accept-Encoding header
* No 'gzip' or 'x-gzip' with a qvalue > 0 is present
* The 'identity' value is given with a qvalue > 0.
"""
request = cherrypy.serving.request
response = cherrypy.serving.response
set_vary_header(response, "Accept-Encoding")
if not response.body:
# Response body is empty (might be a 304 for instance)
if debug:
cherrypy.log('No response body', context='TOOLS.GZIP')
return
# If returning cached content (which should already have been gzipped),
# don't re-zip.
if getattr(request, "cached", False):
if debug:
cherrypy.log('Not gzipping cached response', context='TOOLS.GZIP')
return
acceptable = request.headers.elements('Accept-Encoding')
if not acceptable:
# If no Accept-Encoding field is present in a request,
# the server MAY assume that the client will accept any
# content coding. In this case, if "identity" is one of
# the available content-codings, then the server SHOULD use
# the "identity" content-coding, unless it has additional
# information that a different content-coding is meaningful
# to the client.
if debug:
cherrypy.log('No Accept-Encoding', context='TOOLS.GZIP')
return
ct = response.headers.get('Content-Type', '').split(';')[0]
for coding in acceptable:
if coding.value == 'identity' and coding.qvalue != 0:
if debug:
cherrypy.log('Non-zero identity qvalue: %r' % coding,
context='TOOLS.GZIP')
return
if coding.value in ('gzip', 'x-gzip'):
if coding.qvalue == 0:
if debug:
cherrypy.log('Zero gzip qvalue: %r' % coding,
context='TOOLS.GZIP')
return
if ct not in mime_types:
if debug:
cherrypy.log('Content-Type %r not in mime_types %r' %
(ct, mime_types),
context='TOOLS.GZIP')
return
if debug:
cherrypy.log('Gzipping', context='TOOLS.GZIP')
# Return a generator that compresses the page
response.headers['Content-Encoding'] = 'gzip'
response.body = compress(response.body, compress_level)
if "Content-Length" in response.headers:
# Delete Content-Length header so finalize() recalcs it.
del response.headers["Content-Length"]
return
if debug:
cherrypy.log('No acceptable encoding found.', context='GZIP')
cherrypy.HTTPError(406, "identity, gzip").set_response()
def gzip(compress_level=5,
mime_types=['text/html', 'text/plain'],
debug=False):
"""Try to gzip the response body if Content-Type in mime_types.
cherrypy.response.headers['Content-Type'] must be set to one of the
values in the mime_types arg before calling this function.
The provided list of mime-types must be of one of the following form:
* type/subtype
* type/*
* type/*+subtype
No compression is performed if any of the following hold:
* The client sends no Accept-Encoding request header
* No 'gzip' or 'x-gzip' is present in the Accept-Encoding header
* No 'gzip' or 'x-gzip' with a qvalue > 0 is present
* The 'identity' value is given with a qvalue > 0.
"""
request = cherrypy.serving.request
response = cherrypy.serving.response
set_vary_header(response, 'Accept-Encoding')
if not response.body:
if debug:
cherrypy.log('No response body', context='TOOLS.GZIP')
return
if getattr(request, 'cached', False):
if debug:
cherrypy.log('Not gzipping cached response', context='TOOLS.GZIP')
return
acceptable = request.headers.elements('Accept-Encoding')
if not acceptable:
if debug:
cherrypy.log('No Accept-Encoding', context='TOOLS.GZIP')
return
ct = response.headers.get('Content-Type', '').split(';')[0]
for coding in acceptable:
if coding.value == 'identity' and coding.qvalue != 0:
if debug:
cherrypy.log('Non-zero identity qvalue: %s' % coding,
context='TOOLS.GZIP')
return
if coding.value in ('gzip', 'x-gzip'):
if coding.qvalue == 0:
if debug:
cherrypy.log('Zero gzip qvalue: %s' % coding,
context='TOOLS.GZIP')
return
if ct not in mime_types:
found = False
if '/' in ct:
ct_media_type, ct_sub_type = ct.split('/')
for mime_type in mime_types:
if '/' in mime_type:
media_type, sub_type = mime_type.split('/')
if ct_media_type == media_type:
if sub_type == '*':
found = True
break
elif '+' in sub_type and '+' in ct_sub_type:
ct_left, ct_right = ct_sub_type.split('+')
left, right = sub_type.split('+')
if left == '*' and ct_right == right:
found = True
break
if not found:
if debug:
cherrypy.log('Content-Type %s not in mime_types %r' %
(ct, mime_types),
context='TOOLS.GZIP')
return
if debug:
cherrypy.log('Gzipping', context='TOOLS.GZIP')
response.headers['Content-Encoding'] = 'gzip'
response.body = compress(response.body, compress_level)
if 'Content-Length' in response.headers:
del response.headers['Content-Length']
return
if debug:
cherrypy.log('No acceptable encoding found.', context='GZIP')
cherrypy.HTTPError(406, 'identity, gzip').set_response()