SNMP Manager Programmer's Guide

Programming Examples
SNMP Manager Programmer’s Guide–134249
2-18
Managers Supporting UDP and IPC
while ((ptr = strchr(name, '.')) != NULL)
{
dots++; /* keep track of no. of dots */
memset(id, NULL, 20);
strncpy(id, name, ptr - name);
byte = atoi(id);
if ( byte < 0 || byte > 255)
{
fprintf(stdout, "Invalid IP address %s\n", hname);
return HOSTNAME_ERROR;
}
name = ptr + 1;
} /* of while */
/* if IP address contains invalid no. of dots exit */
if ( dots < 3)
{
fprintf(stdout, "Invalid IP address %s\n", hname);
return HOSTNAME_ERROR;
}
host_addr1 = inet_addr(hname);
if (host_addr1 == INVALID_HOST_ADDR)
{
fprintf(stdout, "Invalid IP address %s\n", hname);
return HOSTNAME_ERROR;
}
t2 = (char *) &host_addr1;
host1 = host_file_gethostbyaddr (t2, 4, AF_INET); <--14
if (host1 == NULL) <--15
{
return CK_REMOTE_IP;
} else /* IP address is defined in host file */
{
memset(t3, NULL, MAXNAMEBUF);
strcat(t3, "\\"); /* returned hostname need a '\' */ <--16
strcat(t3, host1->h_name);
if (strlen(t3) > MAXHOSTNAME) /* hostname is assumed 8 char long */
return CK_REMOTE_IP;
err3 = NODENAME_TO_NODENUMBER_ (t3, (short) strlen(t3), &sysnum2); <--17
Example 2-2. Contents of snmpfsc (page 5 of 19)