// used to test out the get public data events
void SimpleShell::get_command( string parameters, StreamOutput* stream){
int what= get_checksum(shift_parameter( parameters ));
void *returned_data;
if(what == get_temp_command_checksum) {
string type= shift_parameter( parameters );
bool ok= this->kernel->public_data->get_value( temperature_control_checksum, get_checksum(type), current_temperature_checksum, &returned_data );
if(ok) {
struct pad_temperature temp= *static_cast<struct pad_temperature*>(returned_data);
stream->printf("%s temp: %f/%f @%d\r\n", type.c_str(), temp.current_temperature, temp.target_temperature, temp.pwm);
}else{
stream->printf("%s is not a known temperature device\r\n", type.c_str());
}
}else if(what == get_pos_command_checksum) {
bool ok= this->kernel->public_data->get_value( robot_checksum, current_position_checksum, &returned_data );
if(ok) {
double *pos= static_cast<double *>(returned_data);
stream->printf("Position X: %f, Y: %f, Z: %f\r\n", pos[0], pos[1], pos[2]);
}else{
stream->printf("get pos command failed\r\n");
}
}
}
static struct dupl_id *check_id_dupl(struct xattr_list *xattr_list, int xattrs)
{
struct dupl_id *entry;
int i;
unsigned short checksum = 0;
/* compute checksum over all xattrs */
for(i = 0; i < xattrs; i++) {
struct xattr_list *xattr = &xattr_list[i];
checksum = get_checksum(xattr->full_name,
strlen(xattr->full_name), checksum);
checksum = get_checksum(xattr->value,
xattr->vsize, checksum);
}
for(entry = dupl_id[checksum]; entry; entry = entry->next) {
if (entry->xattrs != xattrs)
continue;
for(i = 0; i < xattrs; i++) {
struct xattr_list *xattr = &xattr_list[i];
struct xattr_list *dup_xattr = &entry->xattr_list[i];
if(strcmp(xattr->full_name, dup_xattr->full_name))
break;
if(memcmp(xattr->value, dup_xattr->value, xattr->vsize))
break;
}
if(i == xattrs)
break;
}
if(entry == NULL) {
/* no duplicate exists */
entry = malloc(sizeof(*entry));
if(entry == NULL) {
ERROR("malloc failed in check_ip_dupl\n");
return NULL;
}
entry->xattrs = xattrs;
entry->xattr_list = xattr_list;
entry->xattr_id = SQUASHFS_INVALID_XATTR;
entry->next = dupl_id[checksum];
dupl_id[checksum] = entry;
}
return entry;
}
static void
test_get_checksum_succeeds_if_size_odd_number() {
buffer *ipv4_buffer = setup_dummy_ether_ipv4_packet( );
ipv4_header_t *odd_number = ( ipv4_header_t * ) ( ( char * ) ( ipv4_buffer->data ) + sizeof( ether_header_t ) );
odd_number->check = 0;
odd_number->check = get_checksum( ( uint16_t * ) odd_number, sizeof( ipv4_header_t ) - 1 );
assert_true( odd_number->check != 0 );
odd_number->check = get_checksum( ( uint16_t * ) odd_number, sizeof( ipv4_header_t ) - 1 );
assert_true( odd_number->check == 0 );
free_buffer( ipv4_buffer );
}
void checkup::unit_checksum(const map_location& loc, bool local)
{
unit_map::iterator u = resources::units->find(loc);
bool equals;
config real;
config expected;
if (!u.valid()) {
std::stringstream message;
message << "non existent unit to checksum at " << loc.x+1 << "," << loc.y+1 << "!";
resources::screen->add_chat_message(time(NULL), "verification", 1, message.str(),
events::chat_handler::MESSAGE_PRIVATE, false);
}
else
{
expected["checksum"] = get_checksum(*u);
}
if(local)
{
equals = local_checkup(expected, real);
}
else
{
equals = this->networked_checkup(expected, real);
}
if(!equals && ((game_config::mp_debug && !local) || local))
{
std::stringstream message;
message << "checksum mismatch at " << loc.x+1 << "," << loc.y+1 << "!";
resources::screen->add_chat_message(time(NULL), "verification", 1, message.str(),
events::chat_handler::MESSAGE_PRIVATE, false);
}
}
/**
* Used to process a data frame that has just been uploaded.
*/
void block_uploaded(struct rx_frame* rx) {
uint32_t mem_addr;
uint32_t checksum, actual_checksum;
if (rx->length >= MEMORY_RECORD_SIZE) {
/* Copy the record from the radio packet. Skip the header and memory address */
memcpy(record, rx->data+5, MEMORY_RECORD_SIZE);
/* Calculate the checksum */
actual_checksum = calculate_checksum(record);
/* Read the checksum */
checksum = get_checksum(record);
if (checksum == actual_checksum) {
/* Extract the memory address */
mem_addr = get_memory_address_from_rx(rx);
/* Acknowledge the frame */
send_upload_ack(rx->source_address, mem_addr, checksum);
/* Write the record out to memory */
put_sample(record);
console_puts("Radio Upload Frame OK\n");
} else {
console_puts("Radio Upload Frame Checksum Error!\n");
console_printf("Frame: %04x\nCalc: %04x\n", checksum, actual_checksum);
}
} else {
console_puts("Radio Upload Frame too short!\n");
}
}
// When a new line is received, check if it is a command, and if it is, act upon it
void SimpleShell::on_console_line_received( void* argument ){
SerialMessage new_message = *static_cast<SerialMessage*>(argument);
string possible_command = new_message.message;
//new_message.stream->printf("Received %s\r\n", possible_command.c_str());
// We don't compare to a string but to a checksum of that string, this saves some space in flash memory
unsigned short check_sum = get_checksum( possible_command.substr(0,possible_command.find_first_of(" \r\n")) ); // todo: put this method somewhere more convenient
// Act depending on command
if (check_sum == ls_command_checksum)
this->ls_command( get_arguments(possible_command), new_message.stream );
else if (check_sum == cd_command_checksum)
this->cd_command( get_arguments(possible_command), new_message.stream );
else if (check_sum == pwd_command_checksum)
this->pwd_command( get_arguments(possible_command), new_message.stream );
else if (check_sum == cat_command_checksum)
this->cat_command( get_arguments(possible_command), new_message.stream );
else if (check_sum == break_command_checksum)
this->break_command(get_arguments(possible_command),new_message.stream );
else if (check_sum == reset_command_checksum)
this->reset_command(get_arguments(possible_command),new_message.stream );
else if (check_sum == dfu_command_checksum)
this->dfu_command(get_arguments(possible_command),new_message.stream );
else if (check_sum == help_command_checksum)
this->help_command(get_arguments(possible_command),new_message.stream );
}
//-----------------------------------------------------------------------------
int read_data_word ( unsigned int addr, unsigned int *data )
{
unsigned int ra,rb,rc,rd;
sprintf((char *)sdata,"R %u 4\r",addr);
ra=strlen((char *)sdata);
ser_senddata(sdata,ra);
if(get_return_code()) return(1);
ra=wait_for_packet();
if(ra<3) return(1);
for(rb=0;rb<ra;rb++) printf("0x%02X ",rdata[rb]); printf("\n");
rb=uudecode(udata,&rdata[1],ra-2);
rc=0;
rd=0;
for(ra=0;ra<rb;ra++)
{
rd<<=8;
rd|=udata[ra];
rc+=udata[ra];
printf("0x%02X %u\n",udata[ra],rc);
}
if(get_checksum(&ra)) return(1);
if(ra!=rc) return(1);
ser_senddata(okpatt,sizeof(okpatt));
*data=rd;
return(0);
}
static void ogg_update_checksum(AVFormatContext *s, int64_t crc_offset)
{
int64_t pos = url_ftell(s->pb);
uint32_t checksum = get_checksum(s->pb);
url_fseek(s->pb, crc_offset, SEEK_SET);
put_be32(s->pb, checksum);
url_fseek(s->pb, pos, SEEK_SET);
}
static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
{
int64_t pos = avio_tell(pb);
uint32_t checksum = get_checksum(pb);
avio_seek(pb, crc_offset, SEEK_SET);
avio_wb32(pb, checksum);
avio_seek(pb, pos, SEEK_SET);
}
// used to test out the get public data events for switch
void SimpleShell::switch_command( string parameters, StreamOutput *stream)
{
string type = shift_parameter( parameters );
string value = shift_parameter( parameters );
bool ok = false;
if(value == "on" || value == "off") {
bool b = value == "on";
ok = PublicData::set_value( switch_checksum, get_checksum(type), state_checksum, &b );
} else {
float v = strtof(value.c_str(), NULL);
ok = PublicData::set_value( switch_checksum, get_checksum(type), value_checksum, &v );
}
if (ok) {
stream->printf("switch %s set to: %s\r\n", type.c_str(), value.c_str());
} else {
stream->printf("%s is not a known switch device\r\n", type.c_str());
}
}
///////////////////////////// Message receiving /////////////////////////////
Message * receive_message() {
radio.read(rx_buffer, MESSAGE_LENGTH);
Message *m = (Message *) rx_buffer;
if (calculate_checksum(m) != (get_checksum(m))) {
Serial.println("WARNING: Checksum differs from expected value.");
m->message_id = ERROR;
}
return m;
}
bool Fs::fsck(void) {
fileoffset_t first_empty_byte;
uint8_t sum = 0xFF;
filecount_t exists;
size_t status;
mtd.read(dbg_super, sizeof(dbg_super), 0);
/* open superblock */
osalDbgCheck((this->files_opened == 0) && (nullptr == super.mtd));
open_super();
/* check magic */
get_magic(toc_buf);
sum = nvramcrc(toc_buf, sizeof(magic), sum);
if (0 != memcmp(magic, toc_buf, sizeof(magic)))
goto FAILED;
/* check existing files number */
exists = get_file_cnt();
sum = nvramcrc(&exists, sizeof(exists), sum);
if (exists > NVRAM_FS_MAX_FILE_CNT)
goto FAILED;
/* verify check sum */
for (size_t i=0; i<NVRAM_FS_MAX_FILE_CNT; i++){
status = super.read(toc_buf, sizeof(toc_buf));
osalDbgCheck(sizeof(toc_buf) == status);
sum = nvramcrc(toc_buf, sizeof(toc_buf), sum);
}
if (sum != get_checksum())
goto FAILED;
/* verify file names */
first_empty_byte = super.start + super.size;
super.setPosition(FAT_OFFSET);
for (size_t i=0; i<exists; i++){
toc_item_t ti;
read_toc_item(&ti, i);
if (OSAL_FAILED == check_name(ti.name, NVRAM_FS_MAX_FILE_NAME_LEN))
goto FAILED;
if ((ti.start + ti.size) >= mtd.capacity())
goto FAILED;
if (ti.start < first_empty_byte)
goto FAILED;
}
super.close();
return OSAL_SUCCESS;
FAILED:
super.close();
return OSAL_FAILED;
}
HRESULT
SORAAPI
_CheckTXError(
PSORA_RADIO pRadio,
s_uint16 Checksum) {
extern HRESULT _SoraRadioReadRFReg(PSORA_RADIO pRadio, s_uint32 addr, OUT s_uint32 *pValue);
s_uint32 addr_23_CountChecksum;
s_uint32 addr_21_CountChecksum;
HRESULT hr;
hr = E_TX_TRANSFER_CHECKSUM_FAIL;
DbgPrint("TX Checksum: [0x%x], TX Count: [%d](16-bits)\n",
get_checksum(READ_REGISTER_ULONG((PULONG)&((pRadio->__ctrl_reg.pRadioRegs->TXCountChecksum)))),
get_count(READ_REGISTER_ULONG((PULONG)&((pRadio->__ctrl_reg.pRadioRegs->TXCountChecksum)))));
if (SUCCEEDED(_SoraRadioReadRFReg(pRadio,
0x0023,
&addr_23_CountChecksum))) {
DbgPrint("addr 23 Checksum: [0x%x], addr 23 Count: [%d](16-bits)\n",
get_checksum(addr_23_CountChecksum),
get_count(addr_23_CountChecksum));
if (get_checksum(addr_23_CountChecksum) != Checksum)
hr = E_TX_TRANSFER_ADDR23_CHECKSUM_FAIL;
}
else
DbgPrint("Failed to get addr 23 CountChecksum\n");
if (SUCCEEDED(_SoraRadioReadRFReg(pRadio,
0x0021,
&addr_21_CountChecksum))) {
DbgPrint("addr 21 Checksum: [0x%x], addr 21 Count: [%d](16-bits)\n",
get_checksum(addr_21_CountChecksum),
get_count(addr_21_CountChecksum));
if (get_checksum(addr_21_CountChecksum) != Checksum)
hr = E_TX_TRANSFER_ADDR21_CHECKSUM_FAIL;
}
else
DbgPrint("Failed to get addr 21 CountChecksum\n");
return hr;
}
void* receive_thread(void *arg)
{
struct receive_param rcv_para = *((struct receive_param *)arg);
PMIFI_PACKET packet, resp;
u8 sum;
int len;
const int buff_len = 1024;
packet = (PMIFI_PACKET)malloc(buff_len);
resp = (PMIFI_PACKET)malloc(buff_len);
memset(packet, 0x0, buff_len);
while (read_packet(rcv_para.sd, packet) != ERROR) {
DBG_OUT("Process received packet");
len = get_packet_len(packet);
sum = get_checksum((u8*)packet, len - 1);
DBG_OUT("len = %d, recv sum = 0x%02x, calc sum = 0x%02x", len, ((u8*)packet)[len - 1], sum);
dump_packet(packet);
if (((u8*)packet)[len - 1] != sum)
DBG_OUT("*** check sum fail");
if (is_client_response(packet->func) == 0) {
handle_packet(rcv_para.sd, packet);
len = server_build_response(packet, resp);
DBG_OUT("build response len is %d", len);
if (len > 0) {
DBG_OUT("enqueue packet to queue");
push_data(rcv_para.sd, (u8*)resp, len);
}
handle_packet_post(rcv_para.sd, packet);
} else {
DBG_OUT("It's a response packet from client, ignored.");
}
memset(packet, 0x0, buff_len);
} /* while(read_packet) */
DBG_OUT("terminated thread 0x%lx", (unsigned long)pthread_self());
for (len = 0; len < ARRAY_SIZE(dev_map); len++)
{
if (dev_map[len].sd == rcv_para.sd)
{
dev_map[len].valid = 0;
break;
}
}
free(packet);
free(resp);
pthread_exit((void *)0);
return NULL;
}
// used to test out the get public data events
void SimpleShell::set_temp_command( string parameters, StreamOutput* stream){
string type= shift_parameter( parameters );
string temp= shift_parameter( parameters );
double t= temp.empty() ? 0.0 : strtod(temp.c_str(), NULL);
bool ok= this->kernel->public_data->set_value( temperature_control_checksum, get_checksum(type), &t );
if(ok) {
stream->printf("%s temp set to: %3.1f\r\n", type.c_str(), t);
}else{
stream->printf("%s is not a known temperature device\r\n", type.c_str());
}
}
/*---------------------------------------------------------------------------*/
bool Shell::parse(register char *str, struct ptentry *t)
{
struct ptentry *p;
for (p = t; p->command_cs != 0; ++p) {
if (get_checksum(str) == p->command_cs) {
break;
}
}
p->pfunc(str, this);
return p->command_cs != 0;
}
// When a new line is received, check if it is a command, and if it is, act upon it
void Configurator::on_console_line_received( void* argument ){
SerialMessage new_message = *static_cast<SerialMessage*>(argument);
string possible_command = new_message.message;
// We don't compare to a string but to a checksum of that string, this saves some space in flash memory
uint16_t check_sum = get_checksum( possible_command.substr(0,possible_command.find_first_of(" \r\n")) ); // todo: put this method somewhere more convenient
// Act depending on command
switch( check_sum ){
case config_get_command_checksum: this->config_get_command( get_arguments(possible_command), new_message.stream ); break;
case config_set_command_checksum: this->config_set_command( get_arguments(possible_command), new_message.stream ); break;
case config_load_command_checksum: this->config_load_command( get_arguments(possible_command), new_message.stream ); break;
}
}
int server_build_response(PMIFI_PACKET packet, PMIFI_PACKET resp)
{
int datalen = 0, packetlen = 0;
u8 sum;
u16 func = packet->func;
memcpy(resp, packet, sizeof(*packet));
resp->func = 0x8001; // little-endian: 0x0180
switch (func) {
case MIFI_CLI_LOGIN:
case MIFI_CLI_ALIVE:
case MIFI_CLI_LOGOUT:
datalen = 100;
resp->datalen = htons(datalen);
memset(resp->data, 0xcc, datalen);
resp->data[0] = (u8)(func);
resp->data[1] = (u8)(func >> 8);
resp->data[2] = 'O';
resp->data[3] = 'K';
resp->data[98] = 'K';
resp->data[99] = 'O';
break;
case MIFI_USR_CHECK:
{
char *purl = "http://news.baidu.com";
int url_len = strlen(purl);
datalen = url_len + 5;
resp->datalen = htons(datalen);
resp->data[0] = 0x00;
resp->data[1] = 0x07;
resp->data[2] = 0x00;
resp->data[3] = (u8)(url_len >> 8);
resp->data[4] = (u8)(url_len);
strcpy((char *)resp->data + 5, purl);
}
break;
default:
return -1;
}
packetlen = sizeof(MIFI_PACKET) + datalen;
sum = get_checksum((u8 *)resp, packetlen);
*(((u8 *)resp) + packetlen) = sum;
return packetlen + 1;
}
// When a new line is received, check if it is a command, and if it is, act upon it
void SimpleShell::on_console_line_received( void* argument ){
SerialMessage new_message = *static_cast<SerialMessage*>(argument);
string possible_command = new_message.message;
// We don't compare to a string but to a checksum of that string, this saves some space in flash memory
unsigned short check_sum = get_checksum( possible_command.substr(0,possible_command.find_first_of(" \r\n")) ); // todo: put this method somewhere more convenient
// Act depending on command
switch( check_sum ){
case ls_command_checksum : this->ls_command( get_arguments(possible_command), new_message.stream ); break;
case cd_command_checksum : this->cd_command( get_arguments(possible_command), new_message.stream ); break;
case pwd_command_checksum : this->pwd_command( get_arguments(possible_command), new_message.stream ); break;
case cat_command_checksum : this->cat_command( get_arguments(possible_command), new_message.stream ); break;
case play_command_checksum : this->play_command(get_arguments(possible_command), new_message.stream ); break;
case reset_command_checksum : this->reset_command(get_arguments(possible_command),new_message.stream ); break;
}
}
// When a new line is received, check if it is a command, and if it is, act upon it
void SimpleShell::on_console_line_received( void *argument )
{
SerialMessage new_message = *static_cast<SerialMessage *>(argument);
// ignore comments
if (new_message.message[0] == ';') return;
string possible_command = new_message.message;
//new_message.stream->printf("Received %s\r\n", possible_command.c_str());
// We don't compare to a string but to a checksum of that string, this saves some space in flash memory
unsigned short check_sum = get_checksum( possible_command.substr(0, possible_command.find_first_of(" \r\n")) ); // todo: put this method somewhere more convenient
// find command and execute it
parse_command(check_sum, get_arguments(possible_command), new_message.stream);
}
t_header *create_header(char *arg)
{
t_header *head;
if ((head = malloc(sizeof(t_header))) == NULL)
return (NULL);
memset(head, '\0', sizeof(t_header));
if (sprintf(head->chksum, " ") < 0)
return (NULL);
if (infos_header(head, arg) == 1)
return (NULL);
head->mode[1] = '0';
head->mode[2] = '0';
head->chksum[7] = ' ';
if (sprintf(head->chksum, "%0*o", 6, get_checksum(head)) < 0)
return (NULL);
return (head);
}
/**
* Returns TRUE if the checksum was changed for associated
* path and send an alert warning.
* Returns FALSE if the checksum is the same or not defined
* for this service.
*/
static int check_checksum(Service_T s, char *report) {
ASSERT(s);
if(!s->checksum)
return FALSE;
if( !check_hash(s->path, s->checksum->hash, s->checksum->type) ) {
snprintf(report, STRLEN, "checksum test failed for %s", s->path);
/* Set the old checksum to the new value so we do not report this
* more than once per change */
FREE(s->checksum->hash);
s->checksum->hash= get_checksum(s->path, s->checksum->type);
return TRUE;
}
DEBUG("'%s' has valid checksums\n", s->name);
return FALSE;
}
// Write the specified setting to the specified ConfigSource
void Configurator::config_set_command( string parameters, StreamOutput* stream ){
string source = shift_parameter(parameters);
string setting = shift_parameter(parameters);
string value = shift_parameter(parameters);
if (value == "") {
value = setting;
setting = source;
source = "";
this->kernel->config->set_string(setting, value);
stream->printf( "live: %s has been set to %s\r\n", setting.c_str(), value.c_str() );
} else {
uint16_t source_checksum = get_checksum(source);
for(int i=0; i < this->kernel->config->config_sources.size(); i++){
if( this->kernel->config->config_sources[i]->is_named(source_checksum) ){
this->kernel->config->config_sources[i]->write(setting, value);
stream->printf( "%s: %s has been set to %s\r\n", source.c_str(), setting.c_str(), value.c_str() );
break;
}
}
}
}
static void check_value_dupl(struct xattr_list *xattr)
{
struct xattr_list *entry;
if(xattr->vsize < XATTR_VALUE_OOL_SIZE)
return;
/* Check if this is a duplicate of an existing value */
xattr->vchecksum = get_checksum(xattr->value, xattr->vsize, 0);
for(entry = dupl[xattr->vchecksum]; entry; entry = entry->vnext) {
if(entry->vsize != xattr->vsize)
continue;
if(memcmp(entry->value, xattr->value, xattr->vsize) == 0)
break;
}
if(entry == NULL) {
/*
* No duplicate exists, add to hash table, and mark as
* requiring writing
*/
xattr->vnext = dupl[xattr->vchecksum];
dupl[xattr->vchecksum] = xattr;
xattr->ool_value = SQUASHFS_INVALID_BLK;
} else {
/*
* Duplicate exists, make type XATTR_VALUE_OOL, and
* remember where the duplicate is
*/
xattr->type |= XATTR_VALUE_OOL;
xattr->ool_value = entry->ool_value;
/* on appending don't free duplicate values because the
* duplicate value already points to the non-duplicate value */
if(xattr->value != entry->value) {
free(xattr->value);
xattr->value = entry->value;
}
}
}
int handle_packet_post(int sd, PMIFI_PACKET packet)
{
int /*n,*/ datalen, packetlen;
u16 func = packet->func;
PMIFI_PACKET p;
u8 sum;
switch (func) {
case MIFI_USR_CHECK:
{
//char *url = "http://baike.baidu.com/";
struct PACK_ALIGN(1) {
u16 bytes;
u32 time;
} allow;
datalen = sizeof(macadr_t) + sizeof(allow);
packetlen = sizeof(MIFI_PACKET ) + datalen;
p = (PMIFI_PACKET)malloc(packetlen + 1);
memcpy(p, packet, sizeof(MIFI_PACKET));
p->func = SERV_SET_PERMIT;
p->sn_packet = htonl(get_packet_sn());
p->datalen = htons(datalen);
memcpy(p->data, packet->data, sizeof(macadr_t));
allow.bytes = htons(50); // 50M
allow.time = htons(3600); // 1 hours
memcpy(p->data + sizeof(macadr_t), &allow, sizeof(allow));
sum = get_checksum((u8 *)p, packetlen);
*(((u8 *)p) + packetlen) = sum;
push_data(sd, (u8 *)p, packetlen + 1);
}
break;
}
return 0;
}
static void
test_get_checksum_icmp_packet() {
ipv4_header_t ipv4_header;
// Create a test packet.
memset( &ipv4_header, 0, sizeof( ipv4_header ) );
ipv4_header.version = 4;
ipv4_header.ihl = 5;
ipv4_header.tos = 0;
ipv4_header.tot_len = htons( 0x0054 );
ipv4_header.id = htons( 0xaec3 );
ipv4_header.frag_off = htons( 0 );
ipv4_header.ttl = 0x40;
ipv4_header.protocol = 0x01;
ipv4_header.csum = 0;
ipv4_header.saddr = htonl( 0xc0a8642b );
ipv4_header.daddr = htonl( 0xc0a8642c );
uint16_t checksum = get_checksum( ( uint16_t * ) &ipv4_header,
sizeof( ipv4_header ) );
assert_int_equal( checksum, 0x3d82 );
}
static void
test_get_checksum_udp_packet() {
ipv4_header_t ipv4_header;
// Create a test packet.
memset( &ipv4_header, 0, sizeof( ipv4_header ) );
ipv4_header.version = 4;
ipv4_header.ihl = 5;
ipv4_header.tos = 0;
ipv4_header.tot_len = htons( 0x004c );
ipv4_header.id = htons( 0x48d8 );
ipv4_header.frag_off = htons( 0 );
ipv4_header.ttl = 0x80;
ipv4_header.protocol = 0x11;
ipv4_header.csum = 0;
ipv4_header.saddr = htonl( 0x0a3835af );
ipv4_header.daddr = htonl( 0x0a3837ff );
uint16_t checksum = get_checksum( ( uint16_t * ) &ipv4_header,
sizeof( ipv4_header ) );
assert_int_equal( checksum, 0xab6f );
}
/* Send IDENT packet */
void network_packet ( network_type *n,
unsigned char packet_type,
unsigned char *data,
unsigned int data_length )
{
unsigned char buffer[1000];
unsigned int length = TX_DATA_OFS + data_length;
unsigned int i = 0;
buffer[i++] = length >> 8;
buffer[i++] = length & 0xff;
buffer[i++] = n->node_id >> 8;
buffer[i++] = n->node_id & 0xff;
buffer[i++] = 0;//node_id >> 8;
buffer[i++] = 0;//node_id & 0xff;
buffer[i++] = packet_type;
buffer[i++] = 0; // No checksum for now
int j = 0;
// Copy payload
for (j= 0; j < data_length; j++)
buffer[i++] = data[j];
buffer[TX_DATA_OFS-1] = get_checksum(buffer, length);
network_send(n, buffer, length);
}
static buffer *
setup_dummy_ether_ipv4_packet() {
buffer *ipv4_buffer = setup_dummy_ether_packet( sizeof( ether_header_t ) + sizeof( ipv4_header_t ) + ipv4_padding_size, ETH_ETHTYPE_IPV4 );
ipv4_header_t *ipv4 = packet_info( ipv4_buffer )->l3_data.ipv4;
ipv4->version = IPVERSION;
ipv4->ihl = sizeof( ipv4_header_t ) / 4;
ipv4->tot_len = htons( sizeof( ipv4_header_t ) );
ipv4->ttl = 0;
ipv4->check = 0;
ipv4->protocol = IPPROTO_UDP;
ipv4->saddr = htonl( 0xC0A80067 );
ipv4->daddr = htonl( 0xC0A80036 );
ipv4->frag_off = htons( 0 );
ipv4->check = get_checksum( ( uint16_t * ) packet_info( ipv4_buffer )->l3_data.ipv4, sizeof( ipv4_header_t ) );
free( ipv4_buffer->user_data );
ipv4_buffer->user_data = NULL;
remove_front_buffer( ipv4_buffer, ETH_PREPADLEN );
return ipv4_buffer;
}
// Output a ConfigValue from the specified ConfigSource to the stream
void Configurator::config_get_command( string parameters, StreamOutput* stream ){
string source = shift_parameter(parameters);
string setting = shift_parameter(parameters);
if (setting == "") { // output live setting
setting = source;
source = "";
vector<uint16_t> setting_checksums = get_checksums( setting );
ConfigValue* cv = this->kernel->config->value(setting_checksums);
string value = "";
if(cv->found){ value = cv->as_string(); }
stream->printf( "live: %s is set to %s\r\n", setting.c_str(), value.c_str() );
} else { // output setting from specified source
uint16_t source_checksum = get_checksum( source );
vector<uint16_t> setting_checksums = get_checksums( setting );
for(int i=0; i < this->kernel->config->config_sources.size(); i++){
if( this->kernel->config->config_sources[i]->is_named(source_checksum) ){
string value = this->kernel->config->config_sources[i]->read(setting_checksums);
stream->printf( "%s: %s is set to %s\r\n", source.c_str(), setting.c_str(), value.c_str() );
break;
}
}
}
}