def serve_controller(request, response, session):
"""
This function is used to generate a dynamic page.
It first runs all models, then runs the function in the controller,
and then tries to render the output using a view/template.
this function must run from the [application] folder.
A typical example would be the call to the url
/[application]/[controller]/[function] that would result in a call
to [function]() in applications/[application]/[controller].py
rendered by applications/[application]/views/[controller]/[function].html
"""
# ##################################################
# build environment for controller and view
# ##################################################
environment = build_environment(request, response, session)
# set default view, controller can override it
response.view = '%s/%s.%s' % (request.controller, request.function,
request.extension)
# also, make sure the flash is passed through
# ##################################################
# process models, controller and view (if required)
# ##################################################
run_models_in(environment)
response._view_environment = copy.copy(environment)
page = run_controller_in(request.controller, request.function, environment)
if isinstance(page, dict):
response._vars = page
response._view_environment.update(page)
page = run_view_in(response._view_environment)
if not request.env.web2py_disable_garbage_collect:
# logic to garbage collect after exec, not always, once every 100 requests
global requests
requests = ('requests' in globals()) and (requests + 1) % 100 or 0
if not requests:
gc.collect()
# end garbage collection logic
# ##################################################
# set default headers it not set
# ##################################################
default_headers = [
('Content-Type', contenttype('.' + request.extension)),
('Cache-Control',
'no-store, no-cache, must-revalidate, post-check=0, pre-check=0'),
('Expires', unlocalised_http_header_date(time.gmtime())),
('Pragma', 'no-cache')
]
for key, value in default_headers:
response.headers.setdefault(key, value)
raise HTTP(response.status, page, **response.headers)
def serve_controller(request, response, session):
"""
This function is used to generate a dynamic page.
It first runs all models, then runs the function in the controller,
and then tries to render the output using a view/template.
this function must run from the [application] folder.
A typical example would be the call to the url
/[application]/[controller]/[function] that would result in a call
to [function]() in applications/[application]/[controller].py
rendered by applications/[application]/views/[controller]/[function].html
"""
# ##################################################
# build environment for controller and view
# ##################################################
environment = build_environment(request, response, session)
# set default view, controller can override it
response.view = '%s/%s.%s' % (request.controller,
request.function,
request.extension)
# also, make sure the flash is passed through
# ##################################################
# process models, controller and view (if required)
# ##################################################
run_models_in(environment)
response._view_environment = copy.copy(environment)
page = run_controller_in(request.controller, request.function, environment)
if isinstance(page, dict):
response._vars = page
response._view_environment.update(page)
page = run_view_in(response._view_environment)
if not request.env.web2py_disable_garbage_collect:
# logic to garbage collect after exec, not always, once every 100 requests
global requests
requests = ('requests' in globals()) and (requests + 1) % 100 or 0
if not requests:
gc.collect()
# end garbage collection logic
# ##################################################
# set default headers it not set
# ##################################################
default_headers = [
('Content-Type', contenttype('.' + request.extension)),
('Cache-Control',
'no-store, no-cache, must-revalidate, post-check=0, pre-check=0'),
('Expires', unlocalised_http_header_date(time.gmtime())),
('Pragma', 'no-cache')]
for key, value in default_headers:
response.headers.setdefault(key, value)
raise HTTP(response.status, page, **response.headers)
def stream_file_or_304_or_206(
static_file,
chunk_size=DEFAULT_CHUNK_SIZE,
request=None,
headers={},
status=200,
error_message=None
):
# FIX THIS
# if error_message is None:
# error_message = rewrite.THREAD_LOCAL.routes.error_message % 'invalid request'
try:
if PY2:
open_f = file # this makes no sense but without it GAE cannot open files
else:
open_f = open
fp = open_f(static_file,'rb')
except IOError as e:
if e.errno == errno.EISDIR:
raise HTTP(403, error_message, web2py_error='file is a directory')
elif e.errno == errno.EACCES:
raise HTTP(403, error_message, web2py_error='inaccessible file')
else:
raise HTTP(404, error_message, web2py_error='invalid file')
else:
fp.close()
stat_file = os.stat(static_file)
fsize = stat_file[stat.ST_SIZE]
modified = stat_file[stat.ST_MTIME]
mtime = unlocalised_http_header_date(time.gmtime(modified))
headers.setdefault('Content-Type', contenttype(static_file))
headers.setdefault('Last-Modified', mtime)
headers.setdefault('Pragma', 'cache')
headers.setdefault('Cache-Control', 'private')
# if this is a normal response and not a respnse to an error page
if status == 200:
if request and request.env.http_if_modified_since == mtime:
raise HTTP(304, **{'Content-Type': headers['Content-Type']})
elif request and request.env.http_range:
start_items = regex_start_range.findall(request.env.http_range)
if not start_items:
start_items = [0]
stop_items = regex_stop_range.findall(request.env.http_range)
if not stop_items or int(stop_items[0]) > fsize - 1:
stop_items = [fsize - 1]
part = (int(start_items[0]), int(stop_items[0]), fsize)
bytes = part[1] - part[0] + 1
try:
stream = open(static_file, 'rb')
except IOError as e:
if e.errno in (errno.EISDIR, errno.EACCES):
raise HTTP(403)
else:
raise HTTP(404)
stream.seek(part[0])
headers['Content-Range'] = 'bytes %i-%i/%i' % part
headers['Content-Length'] = '%i' % bytes
status = 206
# in all the other cases (not 304, not 206, but 200 or error page)
if status != 206:
enc = request.env.http_accept_encoding
if enc and 'gzip' in enc and not 'Content-Encoding' in headers:
gzipped = static_file + '.gz'
if os.path.isfile(gzipped) and os.path.getmtime(gzipped) >= modified:
static_file = gzipped
fsize = os.path.getsize(gzipped)
headers['Content-Encoding'] = 'gzip'
headers['Vary'] = 'Accept-Encoding'
try:
stream = open(static_file, 'rb')
except IOError as e:
# this better not happen when returning an error page ;-)
if e.errno in (errno.EISDIR, errno.EACCES):
raise HTTP(403)
else:
raise HTTP(404)
headers['Content-Length'] = fsize
bytes = None
if request and request.env.web2py_use_wsgi_file_wrapper:
wrapped = request.env.wsgi_file_wrapper(stream, chunk_size)
else:
wrapped = streamer(stream, chunk_size=chunk_size, bytes=bytes)
raise HTTP(status, wrapped, **headers)
def stream_file_or_304_or_206(
static_file,
chunk_size=DEFAULT_CHUNK_SIZE,
request=None,
headers={},
status=200,
error_message=None
):
# FIX THIS
# if error_message is None:
# error_message = rewrite.THREAD_LOCAL.routes.error_message % 'invalid request'
try:
if PY2:
open_f = file # this makes no sense but without it GAE cannot open files
else:
open_f = open
fp = open_f(static_file,'rb')
except IOError as e:
if e.errno == errno.EISDIR:
raise HTTP(403, error_message, web2py_error='file is a directory')
elif e.errno == errno.EACCES:
raise HTTP(403, error_message, web2py_error='inaccessible file')
else:
raise HTTP(404, error_message, web2py_error='invalid file')
else:
fp.close()
stat_file = os.stat(static_file)
fsize = stat_file[stat.ST_SIZE]
modified = stat_file[stat.ST_MTIME]
mtime = unlocalised_http_header_date(time.gmtime(modified))
headers.setdefault('Content-Type', contenttype(static_file))
headers.setdefault('Last-Modified', mtime)
headers.setdefault('Pragma', 'cache')
headers.setdefault('Cache-Control', 'private')
# if this is a normal response and not a respnse to an error page
if status == 200:
if request and request.env.http_if_modified_since == mtime:
raise HTTP(304, **{'Content-Type': headers['Content-Type']})
elif request and request.env.http_range:
start_items = regex_start_range.findall(request.env.http_range)
if not start_items:
start_items = [0]
stop_items = regex_stop_range.findall(request.env.http_range)
if not stop_items or int(stop_items[0]) > fsize - 1:
stop_items = [fsize - 1]
part = (int(start_items[0]), int(stop_items[0]), fsize)
bytes = part[1] - part[0] + 1
try:
stream = open(static_file, 'rb')
except IOError as e:
if e.errno in (errno.EISDIR, errno.EACCES):
raise HTTP(403)
else:
raise HTTP(404)
stream.seek(part[0])
headers['Content-Range'] = 'bytes %i-%i/%i' % part
headers['Content-Length'] = '%i' % bytes
status = 206
# in all the other cases (not 304, not 206, but 200 or error page)
if status != 206:
enc = request.env.http_accept_encoding
if enc and 'gzip' in enc and not 'Content-Encoding' in headers:
gzipped = static_file + '.gz'
if os.path.isfile(gzipped) and os.path.getmtime(gzipped) >= modified:
static_file = gzipped
fsize = os.path.getsize(gzipped)
headers['Content-Encoding'] = 'gzip'
headers['Vary'] = 'Accept-Encoding'
try:
stream = open(static_file, 'rb')
except IOError as e:
# this better not happen when returning an error page ;-)
if e.errno in (errno.EISDIR, errno.EACCES):
raise HTTP(403)
else:
raise HTTP(404)
headers['Content-Length'] = fsize
bytes = None
if request and request.env.web2py_use_wsgi_file_wrapper:
wrapped = request.env.wsgi_file_wrapper(stream, chunk_size)
else:
wrapped = streamer(stream, chunk_size=chunk_size, bytes=bytes)
raise HTTP(status, wrapped, **headers)