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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/socket.h>
#include "util.h"
#include "sia.h"
void msg (char *account, char *event, char *ascii)
{
printf ("%s %64s %s\n", account, event, ascii);
}
static int new_block (int fd, SIA_Block *b)
{
static int have_ascii_messages = 0; /*SIA level 3 doesn't have ascii, SIA level 4 does */
static char account[SIA_MAX_DATA_LENGTH + 1];
static char event[SIA_MAX_DATA_LENGTH + 1];
static char ascii[SIA_MAX_DATA_LENGTH + 1];
unsigned len = sia_data_length (b);
if (sia_ack_if_needed (fd, b))
return -1;
switch (b->function) {
case SIA_FN_ACCOUNT_ID:
memcpy (account, b->data, len);
account[len] = 0;
break;
case SIA_FN_NEW_EVENT:
case SIA_FN_OLD_EVENT:
memcpy (event, b->data, len);
event[len] = 0;
if (!have_ascii_messages) msg (account, event, "");
break;
case SIA_FN_ASCII:
have_ascii_messages = 1;
memcpy (ascii, b->data, len);
ascii[len] = 0;
msg (account, event, ascii);
break;
}
return 0;
}
static void periodic_task (void)
{
}
static int usage (const char *name)
{
fprintf (stderr, "Usage:\n");
fprintf (stderr, "%s [ -p listen_port ]\n\n", name);
fprintf (stderr, "listen_port defaults to 10002\n");
return 1;
}
#define TICK 5
int main (int argc, char *argv[])
{
int port = 10002;
unsigned opt;
int fd;
int afd = -1;
SIA_Block b;
struct timeval tv = {0};
unsigned char buf[SIA_MAX_BLOCK_LENGTH];
unsigned ptr = 0;
while ((opt = getopt (argc, argv, "p:")) != -1) {
switch (opt) {
case 'p':
port = atoi (optarg);
break;
default: /* '?' */
return usage (argv[0]);
}
}
fd = open_tcp_server (port);
if (fd < 0) {
perror ("open socket");
return -1;
}
set_blocking (fd);
// Epically budget TCP server
tv.tv_sec = TICK;
for (;;) {
fd_set rfds;
int rc;
FD_ZERO (&rfds);
FD_SET (fd, &rfds);
if (afd > 0)
FD_SET (afd, &rfds);
rc = select (afd > fd ? afd + 1 : fd + 1, &rfds, NULL, NULL, &tv);
if (!rc) periodic_task();
if (!tv.tv_sec && !tv.tv_usec)
tv.tv_sec = TICK;
if (FD_ISSET (fd, &rfds)) {
if (afd > 0) close (afd);
afd = accept (fd, NULL, NULL);
ptr = 0;
}
if ((afd > 0) && (FD_ISSET (afd, &rfds))) {
if (read (afd, &buf[ptr], 1) != 1) {
close (afd);
afd = -1;
ptr = 0;
continue;
}
ptr++;
switch (sia_parse (buf, ptr, &b)) {
case -1: /*Parse errror, form here is top drop connexion*/
close (afd);
afd = -1;
break;
case 0: /*More data needed*/
break;
default: /*Valid block */
new_block (afd, &b);
ptr = 0;
break;
}
if (ptr == SIA_MAX_BLOCK_LENGTH) {
close (afd);
afd = -1;
}
}
}
}
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