/**
* Extract HTML/CSS/JS/Media files to the local file system.
*/
void HybridMoblet::extractFileSystem()
{
// You can display splash screen if this is the
// first time launch or if the checksum has changed.
// TODO: Add library support for this? At least
// document how to do it yourself.
if (checksumHasChanged())
{
// Extract bundled files to the local file system.
mFileUtil->extractLocalFiles();
// Write the current checksum.
writeChecksum();
}
}
/*
* PROTOCOL - Payload Packet
* -------------------------------------------------------------------------------
* | Header | Length | Sub-Payloads | CHECKSUM |
* -------------------------------------------------------------------------------
* | 4 BYTES | 2 BYTES | n BYTES (74 Bytes Max for each Sub-Payload | 2 BYTES |
* -------------------------------------------------------------------------------
*
*
* Sub-Payload Packet (Max 74 Bytes)
* -------------------------------------------------------------------------------------------------
* | Length | ID | TYPE | ACCESS | LOCATION | VALUE | DESCRIPTION |
* -------------------------------------------------------------------------------------------------
* | 1 BYTE | 2 BYTES | 1 BYTE | 1 BYTE | 1 BYTE | 4 BYTES | n BYTES (Max 30) |
* -------------------------------------------------------------------------------------------------
*
*
* Joins the full message buffer to be sent to the controller
*
*/
int writePayload(Datapoint datapoints[], byte protocolBuffer[]) {
writeHeader(protocolBuffer);
// First sub-payload starts at index 6 (starting from 0)
// 4 bytes HEADER + 2 bytes PAYLOAD LENGTH
int length = 6;
for(int i=0;i < NUMBER_DATAPOINTS; i++) {
length += datapoints[i].writeSubPayload(protocolBuffer, length);
}
// The length comes before the sub-payloads but is only known after they are processed
writeLength(length - 6, protocolBuffer);
length += writeChecksum(length, protocolBuffer);
return length;
}
/*----------------------------------------------------------------------------*/
void sendViaEth(ethernet_frame_t* eth)
{
uint8_t sendBuffer[max_frame_size]; // the byte array that will be sent
uint8_t current_offset; // keeps track of current offset in the buffer
uint8_t padding_len; // how much padding is required
uint8_t message_len; // length of the message being sent
createMac((uint8_t*)&(eth->eth_header.dest),dom0mac);
createMac((uint8_t*)&(eth->eth_header.source),mymac);
eth->eth_header.data_len = 0x0008; // 0x0008 means frame's content is IP
writeEthernetHeader(sendBuffer, &(eth->eth_header), ethernet_header_offset);
writeIPHeader(sendBuffer, &(eth->ip_header), ip_header_offset);
writeUdpHeader(sendBuffer, &(eth->udp_header), udp_header_offset);
writeMessage(sendBuffer, ð->message, message_offset);
message_len = eth->message.length;
current_offset = message_offset+message_len;
if(sum_headers_len + message_len < min_frame_size)
{
padding_len = min_frame_size - (sum_headers_len + message_len );
writePadding(sendBuffer, current_offset, padding_len);
current_offset += padding_len;
}
else
{
padding_len = 0;
}
writeChecksum(sendBuffer, current_offset);
//netfront_xmit(xen_network_device,(unsigned char*) sendBuffer, current_offset+frame_checksum_length);
netfront_xmit(net_dev,(unsigned char*) sendBuffer, current_offset+frame_checksum_length);//change it to linux version
}
