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cefpython/src/handlers/resource_handler.pyx at cefpython58 · pythonthings/cefpython · GitHub
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handlers
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resource_handler.pyx
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handlers
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resource_handler.pyx
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#
Copyright (c) 2013 CEF Python, see the Authors file.
#
All rights reserved. Licensed under BSD 3-clause license.
#
Project website: https://github.com/cztomczak/cefpython
include
"
../cefpython.pyx
"
import
weakref
#
-----------------------------------------------------------------------------
#
Globals
#
-----------------------------------------------------------------------------
#
See StoreUserCookieVisitor().
cdef
object
g_userResourceHandler
=
weakref.WeakValueDictionary()
cdef
int
g_userResourceHandlerMaxId
=
0
#
-----------------------------------------------------------------------------
#
ResourceHandler
#
-----------------------------------------------------------------------------
cdef py_void ValidateUserResourceHandler(
object
userResourceHandler):
cdef
list
methods
=
[
"
ProcessRequest
"
,
"
GetResponseHeaders
"
,
"
ReadResponse
"
,
"
CanGetCookie
"
,
"
CanSetCookie
"
,
"
Cancel
"
]
for
method
in
methods:
if
userResourceHandler
and
hasattr
(userResourceHandler, method)\
and
callable
(
getattr
(userResourceHandler, method)):
#
Okay.
continue
else
:
raise
Exception
(
"
ResourceHandler object is missing method:
%s
"
\
%
method)
cdef CefRefPtr[CefResourceHandler] CreateResourceHandler(
object
userResourceHandler)
except
*
:
ValidateUserResourceHandler(userResourceHandler)
cdef
int
resourceHandlerId
=
StoreUserResourceHandler(userResourceHandler)
cdef CefRefPtr[CefResourceHandler] resourceHandler
=
\
<
CefRefPtr[CefResourceHandler]?
>
new ResourceHandler(
resourceHandlerId)
return
resourceHandler
cdef
int
StoreUserResourceHandler(
object
userResourceHandler)
except
*
:
global
g_userResourceHandlerMaxId
global
g_userResourceHandler
g_userResourceHandlerMaxId
+=
1
g_userResourceHandler[g_userResourceHandlerMaxId]
=
userResourceHandler
return
g_userResourceHandlerMaxId
cdef PyResourceHandler GetPyResourceHandler(
int
resourceHandlerId):
global
g_userResourceHandler
cdef
object
userResourceHandler
cdef PyResourceHandler pyResourceHandler
if
resourceHandlerId
in
g_userResourceHandler:
userResourceHandler
=
g_userResourceHandler[resourceHandlerId]
pyResourceHandler
=
PyResourceHandler(userResourceHandler)
return
pyResourceHandler
cdef
class
PyResourceHandler:
cdef
object
userResourceHandler
def
__init__
(
self
, object
userResourceHandler
):
self
.userResourceHandler
=
userResourceHandler
cdef
object
GetCallback(
self
,
str
funcName):
if
self
.userResourceHandler
and
(
hasattr
(
self
.userResourceHandler, funcName)
and
(
callable
(
getattr
(
self
.userResourceHandler, funcName)))):
return
getattr
(
self
.userResourceHandler, funcName)
#
------------------------------------------------------------------------------
#
ResourceHandler callbacks
#
------------------------------------------------------------------------------
cdef public cpp_bool ResourceHandler_ProcessRequest(
int
resourceHandlerId,
CefRefPtr[CefRequest] cefRequest,
CefRefPtr[CefCallback] cefCallback
)
except
*
with
gil:
cdef PyResourceHandler pyResourceHandler
cdef
object
userCallback
cdef py_bool returnValue
cdef PyRequest pyRequest
cdef PyCallback pyCallback
try
:
assert
IsThread(TID_IO),
"
Must be called on the IO thread
"
pyResourceHandler
=
GetPyResourceHandler(resourceHandlerId)
pyRequest
=
CreatePyRequest(cefRequest)
pyCallback
=
CreatePyCallback(cefCallback)
if
pyResourceHandler:
userCallback
=
pyResourceHandler.GetCallback(
"
ProcessRequest
"
)
if
userCallback:
returnValue
=
userCallback(
request
=
pyRequest,
callback
=
pyCallback)
return
bool
(returnValue)
return
False
except
:
(exc_type, exc_value, exc_trace)
=
sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public
void
ResourceHandler_GetResponseHeaders(
int
resourceHandlerId,
CefRefPtr[CefResponse] cefResponse,
int64
&
cefResponseLength,
CefString
&
cefRedirectUrl
)
except
*
with
gil:
cdef PyResourceHandler pyResourceHandler
cdef
object
userCallback
cdef py_bool returnValue
cdef PyResponse pyResponse
cdef
list
responseLengthOut
cdef
list
redirectUrlOut
try
:
assert
IsThread(TID_IO),
"
Must be called on the IO thread
"
pyResourceHandler
=
GetPyResourceHandler(resourceHandlerId)
pyResponse
=
CreatePyResponse(cefResponse)
responseLengthOut
=
[cefResponseLength]
redirectUrlOut
=
[CefToPyString(cefRedirectUrl)]
if
pyResourceHandler:
userCallback
=
pyResourceHandler.GetCallback(
"
GetResponseHeaders
"
)
if
userCallback:
returnValue
=
userCallback(pyResponse, responseLengthOut,
redirectUrlOut)
(
&
cefResponseLength)[
0
]
=
<
int64
>
responseLengthOut[
0
]
if
redirectUrlOut[
0
]:
PyToCefString(redirectUrlOut[
0
], cefRedirectUrl)
return
return
except
:
(exc_type, exc_value, exc_trace)
=
sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public cpp_bool ResourceHandler_ReadResponse(
int
resourceHandlerId,
void
*
cefDataOut,
int
bytesToRead,
int
&
cefBytesRead,
CefRefPtr[CefCallback] cefCallback
)
except
*
with
gil:
cdef PyResourceHandler pyResourceHandler
cdef
object
userCallback
cdef py_bool returnValue
cdef
list
dataOut
cdef
list
bytesReadOut
cdef PyCallback pyCallback
cdef
char
*
tempData
cdef
int
tempDataLength
cdef
int
pyBytesRead
try
:
assert
IsThread(TID_IO),
"
Must be called on the IO thread
"
pyResourceHandler
=
GetPyResourceHandler(resourceHandlerId)
dataOut
=
[
"
"
]
bytesReadOut
=
[
0
]
pyCallback
=
CreatePyCallback(cefCallback)
if
pyResourceHandler:
userCallback
=
pyResourceHandler.GetCallback(
"
ReadResponse
"
)
if
userCallback:
returnValue
=
userCallback(
data_out
=
dataOut,
bytes_to_read
=
bytesToRead,
bytes_read_out
=
bytesReadOut,
callback
=
pyCallback)
pyBytesRead
=
int
(bytesReadOut[
0
])
if
dataOut[
0
]
and
IsString(dataOut[
0
]):
#
The tempData pointer is tied to the lifetime
#
of dataOut[0] string.
tempData
=
dataOut[
0
]
memcpy(cefDataOut, tempData,
len
(dataOut[
0
]))
assert
pyBytesRead
>=
0
,
"
bytesReadOut < 0
"
(
&
cefBytesRead)[
0
]
=
pyBytesRead
#
True should be returned now.
else
:
(
&
cefBytesRead)[
0
]
=
0
#
Either:
#
1. True should be returned and callback.Continue()
#
called at a later time.
#
2. False returned to indicate response completion.
return
bool
(returnValue)
return
False
except
:
(exc_type, exc_value, exc_trace)
=
sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public cpp_bool ResourceHandler_CanGetCookie(
int
resourceHandlerId,
const CefCookie
&
cefCookie
)
except
*
with
gil:
cdef PyResourceHandler pyResourceHandler
cdef
object
userCallback
cdef py_bool returnValue
cdef PyCookie pyCookie
try
:
assert
IsThread(TID_IO),
"
Must be called on the IO thread
"
pyResourceHandler
=
GetPyResourceHandler(resourceHandlerId)
pyCookie
=
CreatePyCookie(cefCookie)
if
pyResourceHandler:
userCallback
=
pyResourceHandler.GetCallback(
"
CanGetCookie
"
)
if
userCallback:
returnValue
=
userCallback(
cookie
=
pyCookie)
return
bool
(returnValue)
return
False
except
:
(exc_type, exc_value, exc_trace)
=
sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public cpp_bool ResourceHandler_CanSetCookie(
int
resourceHandlerId,
const CefCookie
&
cefCookie
)
except
*
with
gil:
cdef PyResourceHandler pyResourceHandler
cdef
object
userCallback
cdef py_bool returnValue
cdef PyCookie pyCookie
try
:
assert
IsThread(TID_IO),
"
Must be called on the IO thread
"
pyResourceHandler
=
GetPyResourceHandler(resourceHandlerId)
pyCookie
=
CreatePyCookie(cefCookie)
if
pyResourceHandler:
userCallback
=
pyResourceHandler.GetCallback(
"
CanSetCookie
"
)
if
userCallback:
returnValue
=
userCallback(
cookie
=
pyCookie)
return
bool
(returnValue)
return
False
except
:
(exc_type, exc_value, exc_trace)
=
sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public
void
ResourceHandler_Cancel(
int
resourceHandlerId
)
except
*
with
gil:
cdef PyResourceHandler pyResourceHandler
cdef
object
userCallback
try
:
assert
IsThread(TID_IO),
"
Must be called on the IO thread
"
pyResourceHandler
=
GetPyResourceHandler(resourceHandlerId)
if
pyResourceHandler:
userCallback
=
pyResourceHandler.GetCallback(
"
Cancel
"
)
if
userCallback:
userCallback()
return
return
except
:
(exc_type, exc_value, exc_trace)
=
sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
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