Mercurial > hg > freeDiameter-dtls
view extensions/dbg_interactive/hooks.i @ 1176:f0b328ea2fdb
Added initial support for hooks in the dbg_interactive extension
author | Sebastien Decugis <sdecugis@freediameter.net> |
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date | Mon, 03 Jun 2013 14:18:43 +0800 |
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/********************************************************************************************************* * Software License Agreement (BSD License) * * Author: Sebastien Decugis <sdecugis@freediameter.net> * * * * Copyright (c) 2013, WIDE Project and NICT * * All rights reserved. * * * * Redistribution and use of this software in source and binary forms, with or without modification, are * * permitted provided that the following conditions are met: * * * * * Redistributions of source code must retain the above * * copyright notice, this list of conditions and the * * following disclaimer. * * * * * Redistributions in binary form must reproduce the above * * copyright notice, this list of conditions and the * * following disclaimer in the documentation and/or other * * materials provided with the distribution. * * * * * Neither the name of the WIDE Project or NICT nor the * * names of its contributors may be used to endorse or * * promote products derived from this software without * * specific prior written permission of WIDE Project and * * NICT. * * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED * * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *********************************************************************************************************/ /* Do not include this directly, use dbg_interactive.i instead */ /****** HOOKS *********/ /* Functions to handle the PMD */ %{ struct fd_hook_permsgdata { PyObject *PyPML; }; static void init_permsgdata (struct fd_hook_permsgdata * pmd) { /* The PMD is None by default */ Py_INCREF(Py_None); pmd->PyPML = Py_None; } static void fini_permsgdata (struct fd_hook_permsgdata * pmd) { Py_DECREF(pmd->PyPML); } %} struct fd_hook_data_hdl { }; %nodefaultctor fd_hook_data_hdl; %extend fd_hook_data_hdl { fd_hook_data_hdl() { struct fd_hook_data_hdl * hdl = NULL; int ret; ret = fd_hook_data_register ( sizeof(struct fd_hook_permsgdata), init_permsgdata, fini_permsgdata, &hdl ); if (ret != 0) { DI_ERROR(ret, NULL, NULL); return NULL; } return hdl; } } /* Now the hook itself */ %{ static void call_the_python_hook_callback(enum fd_hook_type type, struct msg * msg, struct peer_hdr * peer, void * other, struct fd_hook_permsgdata *pmd, void * regdata) { PyObject *cb, *result = NULL; PyObject *PyType, *PyMsg, *PyPeer, *PyOther, *PyOldPmd; if (!regdata) { LOG_E("Internal error: missing the callback!"); return; } cb = regdata; SWIG_PYTHON_THREAD_BEGIN_BLOCK; /* Convert the arguments */ PyType = PyLong_FromLong(type); Py_INCREF(PyType); PyMsg = SWIG_NewPointerObj((void *) msg, SWIGTYPE_p_msg, 0 ); PyPeer = SWIG_NewPointerObj((void *) peer, SWIGTYPE_p_peer_hdr, 0 ); if (other == NULL) { PyOther=Py_None; Py_INCREF(Py_None); } else { switch (type) { case HOOK_DATA_RECEIVED: PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_fd_cnx_rcvdata, 0 ); break; case HOOK_MESSAGE_RECEIVED: case HOOK_MESSAGE_ROUTING_ERROR: case HOOK_MESSAGE_DROPPED: case HOOK_PEER_CONNECT_FAILED: PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_char, 0 ); break; case HOOK_MESSAGE_PARSING_ERROR: if (msg) { PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_char, 0 ); } else { PyOther= SWIG_NewPointerObj( other, SWIGTYPE_p_fd_cnx_rcvdata, 0 ); } break; default: /* In other cases, other should be NULL */ LOG_E("Internal error: got a value of *other"); } } if (pmd == NULL) { Py_INCREF(Py_None); PyOldPmd=Py_None; } else { PyOldPmd=pmd->PyPML; } /* Call the function */ result = PyObject_CallFunction(cb, "(OOOOO)", PyType, PyMsg, PyPeer, PyOther, PyOldPmd); SWIG_PYTHON_THREAD_END_BLOCK; if (pmd == NULL) return; Py_DECREF(pmd->PyPML); Py_INCREF(result); pmd->PyPML = result; } %} struct fd_hook_hdl { }; %nodefaultctor fd_hook_hdl; %extend fd_hook_hdl { fd_hook_hdl(uint32_t type_mask, PyObject * PyCb) { struct fd_hook_hdl *hdl; int ret; Py_XINCREF(PyCb); ret = fd_hook_register ( type_mask, call_the_python_hook_callback, PyCb, NULL, &hdl ); if (ret != 0) { DI_ERROR(ret, NULL, NULL); return NULL; } return hdl; } fd_hook_hdl(uint32_t type_mask, PyObject * PyCb, struct fd_hook_data_hdl *datahdl) { struct fd_hook_hdl *hdl; int ret; Py_XINCREF(PyCb); ret = fd_hook_register ( type_mask, call_the_python_hook_callback, PyCb, datahdl, &hdl ); if (ret != 0) { DI_ERROR(ret, NULL, NULL); return NULL; } return hdl; } ~fd_hook_hdl() { struct fd_hook_hdl * hdl = self; int ret = fd_hook_unregister(hdl); if (ret != 0) { DI_ERROR(ret, NULL, NULL); } return; } }