void capture_start(GtkWidget *widget,gpointer data)
{
GtkWidget *isenable;
uint8_t i = 0;
guint text_len = 0;
pthread_mutex_lock(&capture_state_mtx);
if (capture_state == 0)
capture_state = 1;
pthread_mutex_unlock(&capture_state_mtx);
init_file();
capture_packet();
pthread_mutex_lock(&packet_stat_mtx);
tot_packet = 0;
ip_packet = 0;
tcp_packet = 0;
udp_packet = 0;
arp_packet = 0;
icmp_packet = 0;
igmp_packet = 0;
capture_pre_packet = 0;
pthread_mutex_unlock(&packet_stat_mtx);
isenable = capture_menu[0].widget;
gtk_widget_set_sensitive(isenable,FALSE);
isenable = capture_menu[1].widget;
gtk_widget_set_sensitive(isenable,TRUE);
gtk_clist_clear((GtkCList *)clist);
for (i = 0;i < 5;i++)
{
if (item[i]) {
gtk_tree_item_remove_subtree((GtkTreeItem *)item[i]);
gtk_container_remove (GTK_CONTAINER(tree), item[i]);
item[i] = NULL;
}
}
gtk_text_freeze(GTK_TEXT(hex_text));
text_len = gtk_text_get_length(GTK_TEXT(hex_text));
gtk_text_backward_delete(GTK_TEXT(hex_text),text_len);
gtk_text_thaw(GTK_TEXT(hex_text));
gtk_text_freeze(GTK_TEXT(hex_text));
text_len = gtk_text_get_length(GTK_TEXT(hex_text));
gtk_text_backward_delete(GTK_TEXT(hex_text),text_len);
gtk_text_thaw(GTK_TEXT(hex_text));
}
//handle our packets.
void process_host_packets()
{
unsigned long start = millis();
unsigned long end = start + PACKET_TIMEOUT;
#ifdef ENABLE_COMMS_DEBUG
//Serial.print("IN: ");
#endif
//do we have a finished packet?
while (!hostPacket.isFinished())
{
if (Serial.available() > 0)
{
//digitalWrite(DEBUG_PIN, HIGH);
//grab a byte and process it.
byte d;
d = Serial.read();
hostPacket.process_byte(d);
#ifdef ENABLE_COMMS_DEBUG
//Serial.print(d, HEX);
//Serial.print(" ");
#endif
serial_rx_count++;
//keep us goign while we have data coming in.
start = millis();
end = start + PACKET_TIMEOUT;
if (hostPacket.getResponseCode() == RC_CRC_MISMATCH)
{
//host_crc_errors++;
digitalWrite(DEBUG_PIN, HIGH);
#ifdef ENABLE_COMMS_DEBUG
Serial.println("Host CRC Mismatch");
#endif
}
}
//are we sure we wanna break mid-packet?
//have we timed out?
if (millis() >= end)
{
#ifdef ENABLE_COMMS_DEBUG
Serial.println("Host timeout");
#endif
break;
}
}
if (hostPacket.isFinished())
{
serial_packet_count++;
byte b = hostPacket.get_8(0);
// top bit high == bufferable command packet (eg. #128-255)
if (b & 0x80)
{
if (is_capturing()) {
// Capture this to the SD card
capture_packet(hostPacket);
} else {
//do we have room?
if (commandBuffer.remainingCapacity() >= hostPacket.getLength()) {
//okay, throw it in the buffer.
for (byte i=0; i<hostPacket.getLength(); i++)
commandBuffer.append(hostPacket.get_8(i));
} else {
// Otherwise, we go on with an overflow packet.
hostPacket.overflow();
}
}
}
// top bit low == reply needed query packet (eg. #0-127)
else
handle_query(b);
}
//okay, send our response
hostPacket.sendReply();
}
