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#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <pthread.h>
#include "loadprof.h"
#include "input.h"
#include "output.h"
#include "Com_SendToBack.h"
#include "log.h"
#include "backend.h"
delay_queue_t *g_delay_queue;
parameter_t *g_para = NULL;
delay_queue_t *delay_queue_init(int max_len)
{
delay_queue_t *dq = (delay_queue_t *)calloc(1, sizeof(delay_queue_t));
if (NULL == dq) {
fprintf(stderr, "No enough Memory for queue!");
return NULL;
}
dq->buf = (delay_elem_t *)calloc(max_len, sizeof(delay_elem_t));
if (NULL == dq->buf) {
fprintf(stderr, "No enough Memory for q->buf!");
free(dq);
return NULL;
}
dq->head = 0;
dq->tail = 1;
dq->max_len = max_len;
return dq;
}
void *send_routine(void *arg)
{
uint16_t port_survey = g_para->survey_port;
FILE *fd_log;
char buf_survey[BUF_SIZE];
struct msg_header_t *mh_survey = (struct msg_header_t*)buf_survey;
struct survey_ind_t *msi_survey = (struct survey_ind_t *)(buf_survey + MSG_HEADER_LEN);
memset(buf_survey, 0, BUF_SIZE);
mh_survey->magic_num = PROTO_MAGICNUM;
mh_survey->version = 3;
mh_survey->msg_type = MSG_RESP_CHECKRESULT;
mh_survey->cont_len = SURVEY_MSG_FIX_LEN;
msi_survey->service = g_para->service;
msi_survey->level = g_para->level;
msi_survey->cfg_id = 28;
int fd_survey = output_udp_init();
if (fd_survey < 0) {
printf("socket error!");
exit(1);
}
if (g_para->log_switch) {
fd_log = fopen(LOG_SURVEY,"ab+");
if (NULL == fd_log) {
printf("log init error!");
exit(1);
}
}
int head_new;
int url_len;
delay_queue_t *q = g_delay_queue;
while (1) {
head_new = (q->head + 1) % q->max_len;
while (head_new == q->tail)
if (g_para->timeout > 0)
sleep(g_para->timeout);
else
sleep(1);
delay_elem_t *qe = q->buf + head_new;
while (qe->expire_time > time(NULL))
sleep(1);
memcpy(msi_survey->prog_id, qe->prog_id, 8);
url_len = 1 + sprintf(buf_survey + MSG_HEADER_LEN + SURVEY_MSG_FIX_LEN, "/home/log/%lu.log", *((uint64_t *)qe->prog_id));
mh_survey->cont_len = SURVEY_MSG_FIX_LEN + url_len;
output_udp_send(fd_survey, qe->src_ip, port_survey,
(unsigned char *)buf_survey, MSG_HEADER_LEN + SURVEY_MSG_FIX_LEN + url_len);
if (g_para->log_switch) {
char ntop_buf[20];
write_local_log(fd_log, "dst %s pid %-11llu service 0x%2x level %d",
inet_ntop(AF_INET, &qe->src_ip, ntop_buf, sizeof ntop_buf),
*((unsigned long long*)msi_survey->prog_id),
msi_survey->service,
msi_survey->level);
fflush(fd_log);
}
q->head = head_new;
}
}
int read_profile(char *fpath)
{
if (NULL != g_para) {
fprintf(stderr, "g_para has been initialized!");
return -1;
}
static parameter_t para;
g_para = ¶
int rc;
/* [SYSTEM] */
rc = profile_read_nport(fpath, "SYSTEM", "SURVEY_PORT", &g_para->survey_port, 1);
if (rc < 1)
return -1;
rc = profile_read_nport(fpath, "SYSTEM", "DATA_PORT", &g_para->data_port, 1);
if (rc < 1)
return -1;
rc = profile_read_nbyte_hex(fpath, "SYSTEM", "SERVICE", &g_para->service, 1);
if (rc < 1)
return -1;
profile_read_uint(fpath, "SYSTEM", "TIMEOUT", &g_para->timeout, 0);
profile_read_uint(fpath, "SYSTEM", "LOG_SWITCH", &g_para->log_switch, 0);
profile_read_uint(fpath, "SYSTEM", "LEVEL", &g_para->level, 0);
profile_read_uint(fpath, "SYSTEM", "QUEUE_SIZE", &g_para->queue_size, 10);
if (g_para->queue_size < 1)
g_para->queue_size = 10;
return 0;
}
int main (int argc, char *argv[])
{
char *fprof;
if (argc > 2) {
fprintf(stderr, "\nUsage: %s [<config_file>]\n", argv[0]);
exit(0);
}
// read in configs
fprof = DEFAULT_CONFIG;
if (argc > 1)
fprof = argv[1];
if (read_profile(fprof) < 0) {
fprintf(stderr, "[Error]: Read config file error!\n");
exit(1);
}
g_delay_queue = delay_queue_init(g_para->queue_size);
if (NULL == g_delay_queue) {
printf("g_delay_queue init error!");
exit(1);
}
int fd_data = input_udp_init(g_para->data_port);
if (fd_data < 0) {
printf("socket error!");
exit(1);
}
FILE *fd_error;
if (g_para->log_switch) {
fd_error = fopen(LOG_ERROR,"ab+");
if (NULL == fd_error) {
printf("log init error!");
exit(1);
}
}
pthread_t send_tid;
pthread_create(&send_tid, NULL, send_routine, NULL);
uint32_t src_ip;
uint32_t size;
char buf_data[BUF_SIZE];
struct msg_header_t *mh_data = (struct msg_header_t *)buf_data;
struct metainfo_t *mi_data = (struct metainfo_t *)(buf_data + MSG_HEADER_LEN);
delay_queue_t *q = g_delay_queue;
delay_elem_t *qe;
while(1) {
if (input_udp_recv(fd_data, &src_ip, (unsigned char *)buf_data, &size) < 0)
continue;
if (MSG_DATA_METAINFO != mh_data->msg_type)
continue;
if ((q->tail + 1) % q->max_len == q->head) {
if (g_para->log_switch) {
char ntop_buf[20];
write_local_log(fd_error, "drop - src %s pid %-11llu",
inet_ntop(AF_INET, &src_ip, ntop_buf, sizeof ntop_buf),
*((unsigned long long*)mi_data->prog_id));
fflush(fd_error);
}
sleep (1);
continue;
}
qe = q->buf + q->tail;
memcpy(qe->prog_id, mi_data->prog_id, 8);
qe->expire_time = time(NULL) + g_para->timeout;
qe->src_ip = src_ip;
q->tail = (q->tail + 1) % q->max_len;
}
return EXIT_SUCCESS;
} // end of function main
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