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/*
* tcpConnTable MIB architecture support for NetBSD
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/data_access/tcpConn.h>
#include "tcp-mib/tcpConnectionTable/tcpConnectionTable_constants.h"
#include "tcp-mib/data_access/tcpConn_private.h"
#include "mibII/mibII_common.h"
#if HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#if HAVE_NETINET_TCP_TIMER_H
#include <netinet/tcp_timer.h>
#endif
#if HAVE_NETINET_TCPIP_H
#include <netinet/tcpip.h>
#endif
#if HAVE_NETINET_TCP_VAR_H
#include <netinet/tcp_var.h>
#endif
static int _load(netsnmp_container *container, u_int flags, int var);
/*
* initialize arch specific storage
*
* @retval 0: success
* @retval <0: error
*/
int
netsnmp_arch_tcpconn_entry_init(netsnmp_tcpconn_entry *entry)
{
/*
* init
*/
return 0;
}
/*
* cleanup arch specific storage
*/
void
netsnmp_arch_tcpconn_entry_cleanup(netsnmp_tcpconn_entry *entry)
{
/*
* cleanup
*/
}
/*
* copy arch specific storage
*/
int
netsnmp_arch_tcpconn_entry_copy(netsnmp_tcpconn_entry *lhs,
netsnmp_tcpconn_entry *rhs)
{
return 0;
}
/*
* delete an entry
*/
int
netsnmp_arch_tcpconn_entry_delete(netsnmp_tcpconn_entry *entry)
{
if (NULL == entry)
return -1;
/** xxx-rks:9 tcpConn delete not implemented */
return -1;
}
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
int
netsnmp_arch_tcpconn_container_load(netsnmp_container *container,
u_int load_flags )
{
int rc = 0;
DEBUGMSGTL(("access:tcpconn:container",
"tcpconn_container_arch_load (flags %x)\n", load_flags));
if (NULL == container) {
snmp_log(LOG_ERR, "no container specified/found for access_tcpconn\n");
return -1;
}
rc = _load(container, load_flags, 4);
#if defined(NETSNMP_ENABLE_IPV6)
rc = _load(container, load_flags, 6);
#endif
return rc;
}
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
static int
_load(netsnmp_container *container, u_int load_flags, int ver)
{
const char *mibname;
int mib[8];
size_t mib_len;
struct kinfo_pcb *pcblist;
size_t pcb_len;
int StateMap[] = { 1, 2, 3, 4, 5, 8, 6, 10, 9, 7, 11 };
netsnmp_tcpconn_entry *entry;
int state;
int i, rc = 0;
/*
* Read in the buffer containing the TCP table data
*/
switch (ver) {
case 4:
mibname = "net.inet.tcp.pcblist";
break;
case 6:
mibname = "net.inet6.tcp6.pcblist";
break;
default:
snmp_log(LOG_ERR, "tcp-mib:data_access:_load: bad version %d\n", ver);
return -1;
}
if (sysctlnametomib(mibname, mib, &mib_len) == -1) {
snmp_log(LOG_ERR, "tcp-mib:data_access:_load: cant resolve mib %s\n", mibname);
return -1;
}
if (sysctl(mib, sizeof(mib) / sizeof(*mib), NULL, &pcb_len, NULL, 0) == -1) {
snmp_log(LOG_ERR, "tcp-mib:data_access:_load: cant size mib %s\n", mibname);
return -1;
}
if ((pcblist = malloc(pcb_len)) == NULL) {
snmp_log(LOG_ERR, "tcp-mib:data_access:_load: cant allocate mib %s\n", mibname);
return -1;
}
memset(pcblist, 0, pcb_len);
mib[6] = sizeof(*pcblist);
mib[7] = pcb_len / sizeof(*pcblist);
if (sysctl(mib, sizeof(mib) / sizeof(*mib),
pcblist, &pcb_len, NULL, 0) == -1) {
snmp_log(LOG_ERR, "tcp-mib:data_access:_load: cant size mib %s\n", mibname);
return -1;
}
/*
* Unpick this into the constituent structures, and extract
* the 'inpcb' elements into a linked list (built in reverse)
*/
for (i = 0; i < pcb_len / sizeof(*pcblist); i++) {
struct kinfo_pcb *pcb = pcblist+i;
state = StateMap[pcb->ki_tstate];
if (load_flags) {
if (state == TCPCONNECTIONSTATE_LISTEN) {
if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_NOLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping listen\n"));
continue;
}
}
else if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_ONLYLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping non-listen\n"));
continue;
}
}
entry = netsnmp_access_tcpconn_entry_create();
if(NULL == entry) {
rc = -3;
break;
}
entry->tcpConnState = state;
entry->pid = 0;
if (ver == 6) {
struct sockaddr_in6 src, dst;
memcpy(&src, &pcb->ki_s, sizeof(src));
memcpy(&dst, &pcb->ki_d, sizeof(dst));
entry->loc_addr_len = entry->rmt_addr_len = 16;
memcpy(entry->loc_addr, &src.sin6_addr, 16);
memcpy(entry->rmt_addr, &dst.sin6_addr, 16);
entry->loc_port = ntohs(src.sin6_port);
entry->rmt_port = ntohs(dst.sin6_port);
}
else {
struct sockaddr_in src, dst;
memcpy(&src, &pcb->ki_s, sizeof(src));
memcpy(&dst, &pcb->ki_d, sizeof(dst));
entry->loc_addr_len = entry->rmt_addr_len = 4;
memcpy(entry->loc_addr, &src.sin_addr, 4);
memcpy(entry->rmt_addr, &dst.sin_addr, 4);
entry->loc_port = ntohs(src.sin_port);
entry->rmt_port = ntohs(dst.sin_port);
}
/*
* add entry to container
*/
entry->arbitrary_index = CONTAINER_SIZE(container) + 1;
CONTAINER_INSERT(container, entry);
}
if(rc<0)
return rc;
return 0;
}
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