/******************************************************************************
* *
* Function: close_trap_file *
* *
* Purpose: close trap file and reset lastsize *
* *
* Author: Rudolfs Kreicbergs *
* *
* Comments: !!! do not reset lastsize elsewhere !!! *
* *
******************************************************************************/
static void close_trap_file()
{
if (-1 != trap_fd)
close(trap_fd);
trap_fd = -1;
trap_lastsize = 0;
DBupdate_lastsize();
}
/******************************************************************************
* *
* Function: read_traps *
* *
* Purpose: read the traps and then parse them with parse_traps() *
* *
* Author: Rudolfs Kreicbergs *
* *
******************************************************************************/
static int read_traps()
{
const char *__function_name = "read_traps";
int nbytes = 0;
zabbix_log(LOG_LEVEL_DEBUG, "In %s() lastsize:%d", __function_name, trap_lastsize);
if ((off_t)-1 == lseek(trap_fd, (off_t)trap_lastsize, SEEK_SET))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot set position to %d for \"%s\": %s", trap_lastsize,
CONFIG_SNMPTRAP_FILE, zbx_strerror(errno));
goto exit;
}
if (-1 == (nbytes = read(trap_fd, buffer + offset, MAX_BUFFER_LEN - offset - 1)))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot read from SNMP trapper file \"%s\": %s", CONFIG_SNMPTRAP_FILE,
zbx_strerror(errno));
goto exit;
}
if (0 < nbytes)
{
if (ZBX_SNMP_TRAPFILE_MAX_SIZE <= (zbx_uint64_t)trap_lastsize + nbytes)
{
nbytes = 0;
goto exit;
}
buffer[nbytes + offset] = '\0';
trap_lastsize += nbytes;
DBupdate_lastsize();
parse_traps(0);
}
exit:
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
return nbytes;
}
/******************************************************************************
* *
* Function: read_traps *
* *
* Purpose: read the traps and then parse them with parse_traps() *
* *
* Author: Rudolfs Kreicbergs *
* *
******************************************************************************/
static void read_traps()
{
const char *__function_name = "read_traps";
int nbytes;
char buffer[MAX_BUFFER_LEN];
zabbix_log(LOG_LEVEL_DEBUG, "In %s() lastsize:%d", __function_name, trap_lastsize);
*buffer = '\0';
if ((off_t)-1 == lseek(trap_fd, (off_t)trap_lastsize, SEEK_SET))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot set position to [%d] for [%s]: %s",
trap_lastsize, CONFIG_SNMPTRAP_FILE, zbx_strerror(errno));
goto exit;
}
if (-1 == (nbytes = read(trap_fd, buffer, sizeof(buffer) - 1)))
{
zabbix_log(LOG_LEVEL_WARNING, "cannot read from [%s]: %s",
CONFIG_SNMPTRAP_FILE, zbx_strerror(errno));
goto exit;
}
if (0 < nbytes)
{
buffer[nbytes] = '\0';
zbx_rtrim(buffer + MAX(nbytes - 3, 0), " \r\n");
trap_lastsize += nbytes;
DBupdate_lastsize();
parse_traps(buffer);
}
exit:
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
}
