// Returns the smallest 'cats[cat].counter+counter' on all ancestors of 'cat'.
int find_minimum_relationship(CatID cat, int counter) {
if (cat == NIL) return COUNTER_SENTINEL;
else {
return
min_counter(
add_counter(counter, cats[cat].counter),
min_counter(
find_minimum_relationship(cats[cat].sire, counter + 1),
find_minimum_relationship(cats[cat].dam, counter + 1)));
}
}
/* We do not fail on add_counter here, as some counters may not exist on all
* hosts. The rest will work, and the missing/failed counters will die nicely
* elsewhere */
static int add_all_monitors()
{
int i;
char tmp[512];
add_counter(PDH_USER, &(current_han[SG_WIN32_PROC_USER]));
add_counter(PDH_PRIV, &(current_han[SG_WIN32_PROC_PRIV]));
add_counter(PDH_IDLE, &(current_han[SG_WIN32_PROC_IDLE]));
add_counter(PDH_INTER, &(current_han[SG_WIN32_PROC_INT]));
add_counter(PDH_MEM_CACHE, &(current_han[SG_WIN32_MEM_CACHE]));
add_counter(PDH_UPTIME, &(current_han[SG_WIN32_UPTIME]));
add_counter(PDH_PAGEIN, &(current_han[SG_WIN32_PAGEIN]));
add_counter(PDH_PAGEOUT, &(current_han[SG_WIN32_PAGEOUT]));
diskio_names = get_instance_list("PhysicalDisk", &diskio_no);
if (diskio_names != NULL) {
diskio_rhan = (HCOUNTER *)malloc(sizeof(HCOUNTER) * diskio_no);
if (diskio_rhan == NULL) {
PdhCloseQuery(h_query);
return -1;
}
diskio_whan = (HCOUNTER *)malloc(sizeof(HCOUNTER) * diskio_no);
if (diskio_whan == NULL) {
PdhCloseQuery(h_query);
free (diskio_rhan);
return -1;
}
for (i = 0; i < diskio_no; i++) {
snprintf(tmp, sizeof(tmp), PDH_DISKIOREAD, diskio_names[i]);
add_counter(tmp, &diskio_rhan[i]);
snprintf(tmp, sizeof(tmp), PDH_DISKIOWRITE, diskio_names[i]);
add_counter(tmp, &diskio_whan[i]);
}
}
return 0;
}
// Prints all relationships between 'cat1' and 'cat2' of the given 'distance'.
void print_relationship_at_distance(
CatID cat1, CatID cat2, CatID ancestor, int distance, int counter) {
if (ancestor == NIL) return;
else {
// print self iff at 'distance'
if (distance == add_counter(counter, cats[ancestor].counter)) {
print_relationship(cat1, cats[ancestor].counter, cat2, counter);
}
// recur on sire
print_relationship_at_distance(
cat1, cat2, cats[ancestor].sire, distance, counter + 1);
// recur on dam
print_relationship_at_distance(
cat1, cat2, cats[ancestor].dam, distance, counter + 1);
}
}
static void
handle_packet_in( uint64_t datapath_id, packet_in message ) {
UNUSED( datapath_id );
packet_info packet_info = get_packet_info( message.data );
traffic *db = message.user_data;
uint8_t *macsa = packet_info.eth_macsa;
uint8_t *macda = packet_info.eth_macda;
learn_fdb( db->fdb, macsa, message.in_port );
add_counter( db->counter, macsa, 1, message.data->length );
uint16_t out_port = lookup_fdb( db->fdb, macda );
if ( out_port != ENTRY_NOT_FOUND_IN_FDB ) {
send_packet_out( datapath_id, &message, out_port );
send_flow_mod( datapath_id, macsa, macda, out_port );
}
else {
do_flooding( datapath_id, &message );
}
}
/*******************************************************************************
* Function Name : decrypt_pdu
* Description : Decrypts the incoming stream
* Input : - input_pointer: expended key address
* - input_pointer: input cipher data address
* - int: length
* Output : output_pointer: output plain data address
* Return : None
*******************************************************************************/
u32 decrypt_pdu(u32 *exp_key, unsigned char *cipher,int len, unsigned char *plain )
{
int out_len = 0;
/*Getting the value of Nonce by capturing first word from incoming data*/
n_blocks = len / 16;
n_remain = len % 16;
/*Decryption starts here..................*/
for ( index=0; index< n_blocks; index++ ) {
AES_encrypt(AES_InitnalizationVector_Rx,(u32*)aes_out,(u32*)exp_key);
bitwise_xor((unsigned char*)(aes_out), &cipher[index*16], &plain[index*16]);
add_counter((u32*)AES_InitnalizationVector_Rx);
out_len += 16;
}
for ( index=0; index<16; index++ ) {
remain[index] = 0;
}
/*Storing remaining words in remain buffer*/
for ( index=0; index<n_remain; index++ ) {
remain[index] = cipher[n_blocks*16+index];
}
/*Decryption of the last block starts here*/
AES_encrypt(AES_InitnalizationVector_Rx,(u32*)aes_out,(u32*)exp_key);
/*Notice that AES_encrypt is called for decryption instead of AES_decrypt*/
bitwise_xor((unsigned char*)(aes_out),&remain[0], &temp[0]);
/*putting remaining result into plain buffer*/
for ( index=0; index<n_remain; index++ ) {
plain[n_blocks*16+index] = temp[index];
}
out_len += n_remain;
return nonce;
}
/*******************************************************************************
* Function Name : encrypt_pdu
* Description : Encrypts the incoming stream
* Input : - input_pointer: expended key address
* - input_pointer: input plain data address
* - int: length
* Output : output_pointer: output cipher data address
* Return : None
*******************************************************************************/
u32 encrypt_pdu(u32 *exp_key, unsigned char *plain, int len, unsigned char *cipher)
{
int out_len = 0;
out_len += 4;
n_blocks = len / 16;
n_remain = len % 16;
/*Encryption starts here..................*/
for ( index=0; index< n_blocks; index++ ) {
AES_encrypt(AES_InitnalizationVector_Tx,(u32*)aes_out,exp_key);
bitwise_xor((unsigned char*)(aes_out), &plain[index*16], &cipher[index*16]);
add_counter((uint32_t*)AES_InitnalizationVector_Tx);
out_len += 16;
}/*n_blocks have been encrypted, each with different counter value*/
for ( index=0; index<16; index++ ) {
remain[index] = 0;
}
/*Storing remaining words in remain buffer*/
for ( index=0; index<n_remain; index++ ) {
remain[index] = plain[n_blocks*16+index];
}
/*Encryption of the last block starts here*/
AES_encrypt(/*(u32*)*/AES_InitnalizationVector_Tx,(u32*)aes_out,(u32*)exp_key);
bitwise_xor((unsigned char*)(aes_out),&remain[0], &temp[0]);
/*putting remaining result into cipher buffer*/
for ( index=0; index<n_remain; index++ ) {
cipher[n_blocks*16+index] = temp[index];
}
out_len += n_remain;
return nonce;
}
/*******************************************************************************
* Function Name : encrypt_pdu
* Description : Encrypts the incoming stream
* Input : - input_pointer: expended key address
* - input_pointer: input plain data address
* - int: length
* Output : output_pointer: output pCipher data address
* Return : None
*******************************************************************************/
u32 encrypt_pdu(u32 *aExp_key, unsigned char *pPlain, int len, unsigned char *pCipher)
{
int out_len = 0;
out_len += 4;
n_blocks = len / 16;
n_remain = len % 16;
/*Encryption starts here..................*/
for ( g_index=0; g_index< n_blocks; g_index++ ) {
AES_encrypt(aAES_InitnalizationVector_Tx,(u32*)aes_out,aExp_key);
bitwise_xor((unsigned char*)(aes_out), &pPlain[g_index*16], &pCipher[g_index*16]);
add_counter((uint32_t*)aAES_InitnalizationVector_Tx);
out_len += 16;
}/*n_blocks have been encrypted, each with different counter value*/
for ( g_index=0; g_index<16; g_index++ ) {
aRemain[g_index] = 0;
}
/*Storing remaining words in aRemain buffer*/
for ( g_index=0; g_index<n_remain; g_index++ ) {
aRemain[g_index] = pPlain[n_blocks*16+g_index];
}
/*Encryption of the last block starts here*/
AES_encrypt(/*(u32*)*/aAES_InitnalizationVector_Tx,(u32*)aes_out,(u32*)aExp_key);
bitwise_xor((unsigned char*)(aes_out),&aRemain[0], &aTemp[0]);
/*putting remaining result into pCipher buffer*/
for ( g_index=0; g_index<n_remain; g_index++ ) {
pCipher[n_blocks*16+g_index] = aTemp[g_index];
}
out_len += n_remain;
return nonce;
}
static struct nftnl_rule *setup_rule(uint8_t family, const char *table,
const char *chain, const char *handle)
{
struct nftnl_rule *r = NULL;
uint8_t proto;
uint16_t dport;
uint64_t handle_num;
r = nftnl_rule_alloc();
if (r == NULL) {
perror("OOM");
exit(EXIT_FAILURE);
}
nftnl_rule_set(r, NFTNL_RULE_TABLE, table);
nftnl_rule_set(r, NFTNL_RULE_CHAIN, chain);
nftnl_rule_set_u32(r, NFTNL_RULE_FAMILY, family);
if (handle != NULL) {
handle_num = atoll(handle);
nftnl_rule_set_u64(r, NFTNL_RULE_POSITION, handle_num);
}
proto = IPPROTO_TCP;
add_payload(r, NFT_PAYLOAD_NETWORK_HEADER, NFT_REG_1,
offsetof(struct iphdr, protocol), sizeof(uint8_t));
add_cmp(r, NFT_REG_1, NFT_CMP_EQ, &proto, sizeof(uint8_t));
dport = htons(22);
add_payload(r, NFT_PAYLOAD_TRANSPORT_HEADER, NFT_REG_1,
offsetof(struct tcphdr, dest), sizeof(uint16_t));
add_cmp(r, NFT_REG_1, NFT_CMP_EQ, &dport, sizeof(uint16_t));
add_counter(r);
return r;
}
static void
handle_flow_removed( uint64_t datapath_id, flow_removed message ) {
UNUSED( datapath_id );
traffic *db = message.user_data;
add_counter( db->counter, message.match.dl_src, message.packet_count, message.byte_count );
}
int main(int argc, char** argv) {
if (argc < 2) {
fprintf(stderr, "Usage: ./stat outputfile\n");
exit(1);
}
int fd_out;
if (!(fd_out = open(argv[1], O_WRONLY | O_CREAT, 0644))) {
fprintf(stderr, "Cannot open output file!\n");
exit(1);
}
MYSQL mysql;
MYSQL *sock = mysql_connect_db(&mysql, DBHOST, DBUSER, DBPASS, DBNAME, DBSOCK);
if (sock == NULL)
exit(1);
int rows_num = mysql_result_int(sock, "SELECT COUNT(*) FROM files");
if (rows_num <= 0) {
fprintf(stderr, "Abnormal row num of files: %d\n", rows_num);
exit(1);
}
#ifdef DEBUG
fprintf(stderr, "\nTable file1 Rows: %d\n", rows_num);
#endif
#ifdef DEBUGTIME
int start_time = time(NULL);
fprintf(stderr, "Start loading files: epoch %d\n", start_time);
#endif
// we hope the hashlist will have not too much collision
int slot_num = rows_num * 3;
list l = init_list(slot_num);
if (l == NULL) {
fprintf(stderr, "Error creating hashlist with %d slots\n", slot_num);
exit(1);
}
init_get_next_url(sock, "files");
char url[512];
int length;
while (0 <= (length = get_next_url(url))) {
if (length > 0)
add_str(l, slot_num, url, length);
}
#ifdef DEBUG
fprintf(stderr, "\n%d slots occupied after loading files\n", occupied_slots_num(l, slot_num));
fprintf(stderr, "Hash collision %d times\n", hash_collision_count());
fprintf(stderr, "Repeat string count: %d\n", repeat_str_count());
#endif
#ifdef DEBUGTIME
fprintf(stderr, "Start loading log @%ds\n", time(NULL) - start_time);
#endif
init_get_next_url(sock, "log");
while (0 <= (length = get_next_url(url))) {
if (length > 0)
add_counter(l, slot_num, url, length);
}
#ifdef DEBUG
fprintf(stderr, "\nNot found strings count: %d\n", notfound_str_count());
fprintf(stderr, "\nFound strings count: %d\n", found_str_count());
#endif
#ifdef DEBUGTIME
fprintf(stderr, "Start loading files @%ds\n", time(NULL) - start_time);
#endif
init_buffered_get_next_row(sock, "SELECT * FROM files");
MYSQL_ROW file_fields;
// Do not free() me! It contains many rows and is managed by buffer.
MYSQL_RES* res;
while (res = buffered_get_next_row(&file_fields)) {
// the first field is id, second is url
unsigned long *lengths = mysql_fetch_lengths(res);
unsigned long count = get_counter(l, slot_num, file_fields[1], lengths[1]);
if (unlikely(count == 0)) {
fprintf(stderr, "\nError: file hash not found: %s\n", file_fields[1]);
continue;
}
char* line;
// note that the counter includes one in table `files'
unsigned len = array_implode(&line, mysql_num_fields(res), file_fields, lengths, count-1);
write(fd_out, line, len);
free(line);
}
#ifdef DEBUGTIME
fprintf(stderr, "\nEND @%ds\n", time(NULL) - start_time);
#endif
mysql_close(&mysql);
close(fd_out);
return 0;
}