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+/* capture_stop_conditions.c
+ * Implementation for 'stop condition handler'.
+ *
+ * $Id: capture_stop_conditions.c,v 1.1 2001/12/04 07:32:00 guy Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <time.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <stdarg.h>
+#include "conditions.h"
+#include "capture_stop_conditions.h"
+
+/* predefined classes function prototypes */
+static condition* _cnd_constr_timeout(condition*, va_list);
+static void _cnd_destr_timeout(condition*);
+static gboolean _cnd_eval_timeout(condition*, va_list);
+static void _cnd_reset_timeout(condition*);
+
+static condition* _cnd_constr_capturesize(condition*, va_list);
+static void _cnd_destr_capturesize(condition*);
+static gboolean _cnd_eval_capturesize(condition*, va_list);
+static void _cnd_reset_capturesize(condition*);
+
+void init_capture_stop_conditions(void){
+ cnd_register_class(CND_CLASS_TIMEOUT,
+ _cnd_constr_timeout,
+ _cnd_destr_timeout,
+ _cnd_eval_timeout,
+ _cnd_reset_timeout);
+ cnd_register_class(CND_CLASS_CAPTURESIZE,
+ _cnd_constr_capturesize,
+ _cnd_destr_capturesize,
+ _cnd_eval_capturesize,
+ _cnd_reset_capturesize);
+} /* END init_capture_stop_conditions() */
+
+void cleanup_capture_stop_conditions(void){
+ cnd_unregister_class(CND_CLASS_TIMEOUT);
+ cnd_unregister_class(CND_CLASS_CAPTURESIZE);
+} /* END cleanup_capture_stop_conditions() */
+
+/*****************************************************************************/
+/* Predefined condition 'timeout'. */
+
+/* class id */
+const char* CND_CLASS_TIMEOUT = "cnd_class_timeout";
+
+/* structure that contains user supplied data for this condition */
+typedef struct _cnd_timeout_dat{
+ time_t start_time;
+ gint32 timeout_s;
+}cnd_timeout_dat;
+
+/*
+ * Constructs new condition for timeout check. This function is invoked by
+ * 'cnd_new()' in order to perform class specific initialization.
+ *
+ * parameter: cnd - Pointer to condition passed by 'cnd_new()'.
+ * ap - Pointer to user supplied arguments list for this
+ * constructor.
+ * returns: Pointer to condition - Construction was successful.
+ * NULL - Construction failed.
+ */
+static condition* _cnd_constr_timeout(condition* cnd, va_list ap){
+ cnd_timeout_dat *data = NULL;
+ /* allocate memory */
+ if((data = (cnd_timeout_dat*)malloc(sizeof(cnd_timeout_dat))) == NULL)
+ return NULL;
+ /* initialize user data */
+ data->start_time = time(NULL);
+ data->timeout_s = va_arg(ap, gint32);
+ cnd_set_user_data(cnd, (void*)data);
+ return cnd;
+} /* END _cnd_constr_timeout() */
+
+/*
+ * Destroys condition for timeout check. This function is invoked by
+ * 'cnd_delete()' in order to perform class specific clean up.
+ *
+ * parameter: cnd - Pointer to condition passed by 'cnd_delete()'.
+ */
+static void _cnd_destr_timeout(condition* cnd){
+ /* free memory */
+ free(cnd_get_user_data(cnd));
+} /* END _cnd_destr_timeout() */
+
+/*
+ * Condition handler for timeout condition. This function is invoked by
+ * 'cnd_eval()' in order to perform class specific condition checks.
+ *
+ * parameter: cnd - The inititalized timeout condition.
+ * ap - Pointer to user supplied arguments list for this
+ * handler.
+ * returns: TRUE - Condition is true.
+ * FALSE - Condition is false.
+ */
+static gboolean _cnd_eval_timeout(condition* cnd, va_list ap){
+ cnd_timeout_dat* data = (cnd_timeout_dat*)cnd_get_user_data(cnd);
+ gint32 elapsed_time;
+ /* check timeout here */
+ if(data->timeout_s == 0) return FALSE; /* 0 == infinite */
+ elapsed_time = time(NULL) - data->start_time;
+ if(elapsed_time > data->timeout_s) return TRUE;
+ return FALSE;
+} /* END _cnd_eval_timeout()*/
+
+/*
+ * Call this function to reset this condition to its initial state, i.e. the
+ * state it was in right after creation.
+ *
+ * parameter: cnd - Pointer to an initialized condition.
+ */
+static void _cnd_reset_timeout(condition *cnd){
+ ((cnd_timeout_dat*)cnd_get_user_data(cnd))->start_time = time(NULL);
+} /* END _cnd_reset_timeout() */
+
+
+/*****************************************************************************/
+/* Predefined condition 'max. capturesize'. */
+
+/* class id */
+const char* CND_CLASS_CAPTURESIZE = "cnd_class_capturesize";
+
+/* structure that contains user supplied data for this condition */
+typedef struct _cnd_capturesize_dat{
+ guint32 max_capture_size;
+}cnd_capturesize_dat;
+
+/*
+ * Constructs new condition for capturesize check. This function is invoked by
+ * 'cnd_new()' in order to perform class specific initialization.
+ *
+ * parameter: cnd - Pointer to condition passed by 'cnd_new()'.
+ * ap - Pointer to user supplied arguments list for this
+ * constructor.
+ * returns: Pointer to condition - Construction was successful.
+ * NULL - Construction failed.
+ */
+static condition* _cnd_constr_capturesize(condition* cnd, va_list ap){
+ cnd_capturesize_dat *data = NULL;
+ /* allocate memory */
+ if((data = (cnd_capturesize_dat*)malloc(sizeof(cnd_capturesize_dat))) == NULL)
+ return NULL;
+ /* initialize user data */
+ data->max_capture_size = va_arg(ap, guint32);
+ cnd_set_user_data(cnd, (void*)data);
+ return cnd;
+} /* END _cnd_constr_capturesize() */
+
+/*
+ * Destroys condition for capturesize check. This function is invoked by
+ * 'cnd_delete()' in order to perform class specific clean up.
+ *
+ * parameter: cnd - Pointer to condition passed by 'cnd_delete()'.
+ */
+static void _cnd_destr_capturesize(condition* cnd){
+ /* free memory */
+ free(cnd_get_user_data(cnd));
+} /* END _cnd_destr_capturesize() */
+
+/*
+ * Condition handler for capturesize condition. This function is invoked by
+ * 'cnd_eval()' in order to perform class specific condition checks.
+ *
+ * parameter: cnd - The inititalized capturesize condition.
+ * ap - Pointer to user supplied arguments list for this
+ * handler.
+ * returns: TRUE - Condition is true.
+ * FALSE - Condition is false.
+ */
+static gboolean _cnd_eval_capturesize(condition* cnd, va_list ap){
+ cnd_capturesize_dat* data = (cnd_capturesize_dat*)cnd_get_user_data(cnd);
+ /* check capturesize here */
+ if(data->max_capture_size == 0) return FALSE; /* 0 == infinite */
+ if(va_arg(ap, guint32) >= data->max_capture_size){
+ return TRUE;
+ }
+ return FALSE;
+} /* END _cnd_eval_capturesize() */
+
+/*
+ * Call this function to reset this condition to its initial state, i.e. the
+ * state it was in right after creation.
+ *
+ * parameter: cnd - Pointer to an initialized condition.
+ */
+static void _cnd_reset_capturesize(condition *cnd){
+} /* END _cnd_reset_capturesize() */