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net-snmp/agent/mibgroup/mibII/udpTable.c

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/*
* UDP MIB group Table implementation - udpTable.c
*
*/
/* Portions of this file are subject to the following copyright(s). See
* the Net-SNMP's COPYING file for more details and other copyrights
* that may apply:
*/
/*
* Portions of this file are copyrighted by:
* Copyright © 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms specified in the COPYING file
* distributed with the Net-SNMP package.
*/
#include <net-snmp/net-snmp-config.h>
#include "mibII_common.h"
#if HAVE_NETINET_UDP_H
#include <netinet/udp.h>
#endif
#if HAVE_NETINET_UDP_VAR_H
#include <netinet/udp_var.h>
#endif
#if HAVE_KVM_GETFILES
#if defined(HAVE_KVM_GETFILE2) || !defined(openbsd5)
#undef HAVE_KVM_GETFILES
#endif
#endif
#if HAVE_KVM_GETFILES
#include <kvm.h>
#include <sys/sysctl.h>
#define _KERNEL
#include <sys/file.h>
#undef _KERNEL
#endif
#if defined(cygwin) || defined(mingw32)
#include <winerror.h>
#endif
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/auto_nlist.h>
#ifdef linux
#include "tcpTable.h"
#endif
#include "udp.h"
#include "udpTable.h"
#ifdef hpux11
#define UDPTABLE_ENTRY_TYPE mib_udpLsnEnt
#define UDPTABLE_LOCALADDRESS LocalAddress
#define UDPTABLE_LOCALPORT LocalPort
#define UDPTABLE_IS_TABLE
#elif defined(solaris2)
typedef struct netsnmp_udpEntry_s netsnmp_udpEntry;
struct netsnmp_udpEntry_s {
mib2_udpEntry_t entry;
netsnmp_udpEntry *inp_next;
};
#define UDPTABLE_ENTRY_TYPE netsnmp_udpEntry
#define UDPTABLE_LOCALADDRESS entry.udpLocalAddress
#define UDPTABLE_LOCALPORT entry.udpLocalPort
#define UDPTABLE_IS_LINKED_LIST
#elif defined(HAVE_IPHLPAPI_H)
#include <iphlpapi.h>
#define UDPTABLE_ENTRY_TYPE MIB_UDPROW /* ??? */
#define UDPTABLE_LOCALADDRESS dwLocalAddr
#define UDPTABLE_LOCALPORT dwLocalPort
#define UDPTABLE_IS_TABLE
#elif defined(HAVE_KVM_GETFILES)
#define UDPTABLE_ENTRY_TYPE struct kinfo_file
#define UDPTABLE_LOCALADDRESS inp_laddru[0]
#define UDPTABLE_LOCALPORT inp_lport
#define UDPTABLE_IS_TABLE
#elif defined(linux)
#define INP_NEXT_SYMBOL inp_next
#define UDPTABLE_ENTRY_TYPE struct inpcb
#define UDPTABLE_LOCALADDRESS inp_laddr.s_addr
#define UDPTABLE_LOCALPORT inp_lport
#define UDPTABLE_IS_LINKED_LIST
#else
#ifdef openbsd4
#define INP_NEXT_SYMBOL inp_queue.cqe_next /* or set via <net-snmp/system/openbsd.h> */
#endif
#if defined(freebsd4) || defined(darwin) || defined(osf5)
typedef struct netsnmp_inpcb_s netsnmp_inpcb;
struct netsnmp_inpcb_s {
struct inpcb pcb;
int state;
netsnmp_inpcb *inp_next;
};
#define UDPTABLE_ENTRY_TYPE netsnmp_inpcb
#define UDPTABLE_LOCALADDRESS pcb.inp_laddr.s_addr
#define UDPTABLE_LOCALPORT pcb.inp_lport
#else
#define UDPTABLE_ENTRY_TYPE struct inpcb
#define UDPTABLE_LOCALADDRESS inp_laddr.s_addr
#define UDPTABLE_LOCALPORT inp_lport
#endif
#define UDPTABLE_IS_LINKED_LIST
#endif /* hpux11 */
/* Head of linked list, or root of table */
UDPTABLE_ENTRY_TYPE *udp_head = NULL;
int udp_size = 0; /* Only used for table-based systems */
/*
*
* Initialization and handler routines are common to all architectures
*
*/
#ifndef MIB_STATS_CACHE_TIMEOUT
#define MIB_STATS_CACHE_TIMEOUT 5
#endif
#ifndef UDP_STATS_CACHE_TIMEOUT
#define UDP_STATS_CACHE_TIMEOUT MIB_STATS_CACHE_TIMEOUT
#endif
#ifdef UDP_ADDRESSES_IN_HOST_ORDER
#define UDP_ADDRESS_TO_HOST_ORDER(x) x
#define UDP_ADDRESS_TO_NETWORK_ORDER(x) htonl(x)
#else
#define UDP_ADDRESS_TO_HOST_ORDER(x) ntohl(x)
#define UDP_ADDRESS_TO_NETWORK_ORDER(x) x
#endif
#ifdef UDP_PORTS_IN_HOST_ORDER
#define UDP_PORT_TO_HOST_ORDER(x) x
#else
#define UDP_PORT_TO_HOST_ORDER(x) ntohs(x)
#endif
oid udpTable_oid[] = { SNMP_OID_MIB2, 7, 5 };
void
init_udpTable(void)
{
netsnmp_table_registration_info *table_info;
netsnmp_iterator_info *iinfo;
netsnmp_handler_registration *reginfo;
int rc;
DEBUGMSGTL(("mibII/udpTable", "Initialising UDP Table\n"));
/*
* Create the table data structure, and define the indexing....
*/
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
if (!table_info) {
return;
}
netsnmp_table_helper_add_indexes(table_info, ASN_IPADDRESS,
ASN_INTEGER, 0);
table_info->min_column = UDPLOCALADDRESS;
table_info->max_column = UDPLOCALPORT;
/*
* .... and iteration information ....
*/
iinfo = SNMP_MALLOC_TYPEDEF(netsnmp_iterator_info);
if (!iinfo) {
netsnmp_table_registration_info_free(table_info);
return;
}
iinfo->get_first_data_point = udpTable_first_entry;
iinfo->get_next_data_point = udpTable_next_entry;
iinfo->table_reginfo = table_info;
#if defined (WIN32) || defined (cygwin)
iinfo->flags |= NETSNMP_ITERATOR_FLAG_SORTED;
#endif /* WIN32 || cygwin */
/*
* .... and register the table with the agent.
*/
reginfo = netsnmp_create_handler_registration("udpTable",
udpTable_handler,
udpTable_oid, OID_LENGTH(udpTable_oid),
HANDLER_CAN_RONLY),
rc = netsnmp_register_table_iterator2(reginfo, iinfo);
if (rc != SNMPERR_SUCCESS)
return;
/*
* .... with a local cache
*/
netsnmp_inject_handler( reginfo,
netsnmp_get_cache_handler(UDP_STATS_CACHE_TIMEOUT,
udpTable_load, udpTable_free,
udpTable_oid, OID_LENGTH(udpTable_oid)));
}
int
udpTable_handler(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_request_info *request;
netsnmp_variable_list *requestvb;
netsnmp_table_request_info *table_info;
UDPTABLE_ENTRY_TYPE *entry;
oid subid;
long port;
in_addr_t addr;
DEBUGMSGTL(("mibII/udpTable", "Handler - mode %s\n",
se_find_label_in_slist("agent_mode", reqinfo->mode)));
switch (reqinfo->mode) {
case MODE_GET:
for (request=requests; request; request=request->next) {
requestvb = request->requestvb;
DEBUGMSGTL(( "mibII/udpTable", "oid: "));
DEBUGMSGOID(("mibII/udpTable", requestvb->name,
requestvb->name_length));
DEBUGMSG(( "mibII/udpTable", "\n"));
entry = (UDPTABLE_ENTRY_TYPE *)netsnmp_extract_iterator_context(request);
if (!entry)
continue;
table_info = netsnmp_extract_table_info(request);
subid = table_info->colnum;
switch (subid) {
case UDPLOCALADDRESS:
#if defined(osf5) && defined(IN6_EXTRACT_V4ADDR)
addr = ntohl(IN6_EXTRACT_V4ADDR(&entry->pcb.inp_laddr));
snmp_set_var_typed_value(requestvb, ASN_IPADDRESS,
(u_char*)&addr,
sizeof(uint32_t));
#else
addr = UDP_ADDRESS_TO_HOST_ORDER(entry->UDPTABLE_LOCALADDRESS);
snmp_set_var_typed_value(requestvb, ASN_IPADDRESS,
(u_char *)&addr,
sizeof(uint32_t));
#endif
break;
case UDPLOCALPORT:
port = UDP_PORT_TO_HOST_ORDER((u_short)entry->UDPTABLE_LOCALPORT);
snmp_set_var_typed_value(requestvb, ASN_INTEGER,
(u_char *)&port, sizeof(port));
break;
}
}
break;
case MODE_GETNEXT:
case MODE_GETBULK:
#ifndef NETSNMP_NO_WRITE_SUPPORT
case MODE_SET_RESERVE1:
case MODE_SET_RESERVE2:
case MODE_SET_ACTION:
case MODE_SET_COMMIT:
case MODE_SET_FREE:
case MODE_SET_UNDO:
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
snmp_log(LOG_WARNING, "mibII/udpTable: Unsupported mode (%d)\n",
reqinfo->mode);
break;
default:
snmp_log(LOG_WARNING, "mibII/udpTable: Unrecognised mode (%d)\n",
reqinfo->mode);
break;
}
return SNMP_ERR_NOERROR;
}
/*
* Two forms of iteration hook routines:
* One for when the UDP table is stored as a table
* One for when the UDP table is stored as a linked list
*
* Also applies to the cache-handler free routine
*/
#ifdef UDPTABLE_IS_TABLE
netsnmp_variable_list *
udpTable_first_entry(void **loop_context,
void **data_context,
netsnmp_variable_list *index,
netsnmp_iterator_info *data)
{
/*
* XXX - How can we tell if the cache is valid?
* No access to 'reqinfo'
*/
if (udp_size == 0)
return NULL;
/*
* Point to the first entry, and use the
* 'next_entry' hook to retrieve this row
*/
*loop_context = 0;
return udpTable_next_entry( loop_context, data_context, index, data );
}
netsnmp_variable_list *
udpTable_next_entry( void **loop_context,
void **data_context,
netsnmp_variable_list *index,
netsnmp_iterator_info *data)
{
int i = (intptr_t)*loop_context;
long port;
#if HAVE_KVM_GETFILES
while (i < udp_size && (udp_head[i].so_protocol != IPPROTO_UDP
|| udp_head[i].so_family != AF_INET))
i++;
#endif
if (udp_size < i)
return NULL;
/*
* Set up the indexing for the specified row...
*/
#if defined (WIN32) || defined (cygwin) || defined(openbsd5)
port = ntohl((u_long)udp_head[i].UDPTABLE_LOCALADDRESS);
snmp_set_var_value(index, (u_char *)&port,
sizeof(udp_head[i].UDPTABLE_LOCALADDRESS));
#else
snmp_set_var_value(index, (u_char *)&udp_head[i].UDPTABLE_LOCALADDRESS,
sizeof(udp_head[i].UDPTABLE_LOCALADDRESS));
#endif
port = UDP_PORT_TO_HOST_ORDER((u_short)udp_head[i].UDPTABLE_LOCALPORT);
snmp_set_var_value(index->next_variable,
(u_char*)&port, sizeof(port));
/*
* ... return the data structure for this row,
* and update the loop context ready for the next one.
*/
*data_context = (void*)&udp_head[i];
*loop_context = (void*)(intptr_t)++i;
return index;
}
void
udpTable_free(netsnmp_cache *cache, void *magic)
{
#if defined (WIN32) || defined (cygwin)
if (udp_head) {
/* the allocated structure is a count followed by table entries */
free((char *)(udp_head) - sizeof(DWORD));
}
#elif defined(openbsd5)
#else
if (udp_head)
free(udp_head);
#endif
udp_head = NULL;
udp_size = 0;
}
#else
#ifdef UDPTABLE_IS_LINKED_LIST
netsnmp_variable_list *
udpTable_first_entry(void **loop_context,
void **data_context,
netsnmp_variable_list *index,
netsnmp_iterator_info *data)
{
/*
* XXX - How can we tell if the cache is valid?
* No access to 'reqinfo'
*/
if (udp_head == NULL)
return NULL;
/*
* Point to the first entry, and use the
* 'next_entry' hook to retrieve this row
*/
*loop_context = (void*)udp_head;
return udpTable_next_entry( loop_context, data_context, index, data );
}
netsnmp_variable_list *
udpTable_next_entry( void **loop_context,
void **data_context,
netsnmp_variable_list *index,
netsnmp_iterator_info *data)
{
UDPTABLE_ENTRY_TYPE *entry = (UDPTABLE_ENTRY_TYPE *)*loop_context;
long port;
in_addr_t addr;
if (!entry)
return NULL;
/*
* Set up the indexing for the specified row...
*/
#if defined(osf5) && defined(IN6_EXTRACT_V4ADDR)
snmp_set_var_value(index,
(u_char*)&IN6_EXTRACT_V4ADDR(&entry->pcb.inp_laddr),
sizeof(IN6_EXTRACT_V4ADDR(&entry->pcb.inp_laddr)));
#else
addr = UDP_ADDRESS_TO_NETWORK_ORDER((in_addr_t)entry->UDPTABLE_LOCALADDRESS);
snmp_set_var_value(index, (u_char *)&addr,
sizeof(addr));
#endif
port = UDP_PORT_TO_HOST_ORDER(entry->UDPTABLE_LOCALPORT);
snmp_set_var_value(index->next_variable,
(u_char*)&port, sizeof(port));
/*
* ... return the data structure for this row,
* and update the loop context ready for the next one.
*/
*data_context = (void*)entry;
*loop_context = (void*)entry->INP_NEXT_SYMBOL;
return index;
}
void
udpTable_free(netsnmp_cache *cache, void *magic)
{
UDPTABLE_ENTRY_TYPE *p;
while (udp_head) {
p = udp_head;
udp_head = udp_head->INP_NEXT_SYMBOL;
free(p);
}
udp_head = NULL;
}
#endif /* UDPTABLE_IS_LINKED_LIST */
#endif /* UDPTABLE_IS_TABLE */
/*
*
* The cache-handler loading routine is the main
* place for architecture-specific code
*
* Load into either a table structure, or a linked list
* depending on the system architecture
*/
#ifdef hpux11
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
int fd;
struct nmparms p;
int val = 0;
unsigned int ulen;
int ret;
udpTable_free(NULL, NULL);
if ((fd = open_mib("/dev/ip", O_RDONLY, 0, NM_ASYNC_OFF)) >= 0) {
p.objid = ID_udpLsnNumEnt;
p.buffer = (void *) &val;
ulen = sizeof(int);
p.len = &ulen;
if ((ret = get_mib_info(fd, &p)) == 0)
udp_size = val;
if (udp_size > 0) {
ulen = (unsigned) udp_size *sizeof(mib_udpLsnEnt);
udp_head = (mib_udpLsnEnt *) malloc(ulen);
p.objid = ID_udpLsnTable;
p.buffer = (void *) udp_head;
p.len = &ulen;
if ((ret = get_mib_info(fd, &p)) < 0) {
udp_size = 0;
}
}
close_mib(fd);
}
if (udp_size > 0) {
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (hpux11)\n"));
return 0;
}
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (hpux11)\n"));
return -1;
}
#elif defined(linux)
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
FILE *in;
char line[256];
udpTable_free(cache, NULL);
if (!(in = fopen("/proc/net/udp", "r"))) {
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (linux)\n"));
NETSNMP_LOGONCE((LOG_ERR, "snmpd: cannot open /proc/net/udp ...\n"));
return -1;
}
/*
* scan proc-file and build up a linked list
* This will actually be built up in reverse,
* but since the entries are unsorted, that doesn't matter.
*/
while (line == fgets(line, sizeof(line), in)) {
struct inpcb pcb, *nnew;
unsigned int state, lport;
memset(&pcb, 0, sizeof(pcb));
if (3 != sscanf(line, "%*d: %x:%x %*x:%*x %x",
&pcb.inp_laddr.s_addr, &lport, &state))
continue;
if (state != 7) /* fix me: UDP_LISTEN ??? */
continue;
/* store in network byte order */
pcb.inp_laddr.s_addr = htonl(pcb.inp_laddr.s_addr);
pcb.inp_lport = htons((unsigned short) (lport));
nnew = SNMP_MALLOC_TYPEDEF(struct inpcb);
if (nnew == NULL)
break;
memcpy(nnew, &pcb, sizeof(struct inpcb));
nnew->inp_next = udp_head;
udp_head = nnew;
}
fclose(in);
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (linux)\n"));
return 0;
}
#elif HAVE_KVM_GETFILES
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
int count;
udp_head = kvm_getfiles(kd, KERN_FILE_BYFILE, DTYPE_SOCKET, sizeof(struct kinfo_file), &count);
udp_size = count;
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (kvm_getfiles)\n"));
return 0;
}
#elif defined(solaris2)
static int
UDP_Cmp(void *addr, void *ep)
{
if (memcmp((mib2_udpEntry_t *) ep, (mib2_udpEntry_t *) addr,
sizeof(mib2_udpEntry_t)) == 0)
return (0);
else
return (1);
}
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
mib2_udpEntry_t entry;
netsnmp_udpEntry *nnew;
netsnmp_udpEntry *prev_entry = NULL;
udpTable_free(NULL, NULL);
if (getMibstat(MIB_UDP_LISTEN, &entry, sizeof(mib2_udpEntry_t),
GET_FIRST, &UDP_Cmp, &entry) != 0) {
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (solaris)\n"));
return -1;
}
while (1) {
/*
* Not interested in 'idle' entries, apparently....
*/
DEBUGMSGTL(("mibII/udpTable", "UDP Entry %x:%d (%d)\n",
entry.udpLocalAddress, entry.udpLocalPort, entry.udpEntryInfo.ue_state));
if (entry.udpEntryInfo.ue_state == MIB2_UDP_idle) {
/*
* Build up a linked list copy of the getMibstat results
* Note that since getMibstat returns rows in sorted order,
* we need to retain this order while building the list
* so new entries are added onto the end of the list.
* xxx-rks: WARNING: this is NOT TRUE on the sf cf solaris boxes.
*/
nnew = SNMP_MALLOC_TYPEDEF(netsnmp_udpEntry);
if (nnew == NULL)
break;
memcpy(&(nnew->entry), &entry, sizeof(mib2_udpEntry_t));
if (!prev_entry)
udp_head = nnew;
else
prev_entry->inp_next = nnew;
prev_entry = nnew;
}
if (getMibstat(MIB_UDP_LISTEN, &entry, sizeof(mib2_udpEntry_t),
GET_NEXT, &UDP_Cmp, &entry) != 0)
break;
}
if (udp_head) {
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (solaris)\n"));
return 0;
}
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (solaris)\n"));
return -1;
}
#elif defined (WIN32) || defined (cygwin)
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
PMIB_UDPTABLE pUdpTable = NULL;
DWORD dwActualSize = 0;
DWORD status = NO_ERROR;
/*
* query for the buffer size needed
*/
status = GetUdpTable(pUdpTable, &dwActualSize, TRUE);
if (status == ERROR_INSUFFICIENT_BUFFER) {
pUdpTable = (PMIB_UDPTABLE) malloc(dwActualSize);
if (pUdpTable != NULL) {
/*
* Get the sorted UDP table
*/
status = GetUdpTable(pUdpTable, &dwActualSize, TRUE);
}
}
if (status == NO_ERROR) {
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (win32)\n"));
udp_size = pUdpTable->dwNumEntries -1; /* entries are counted starting with 0 */
udp_head = pUdpTable->table;
return 0;
}
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (win32)\n"));
if (pUdpTable)
free(pUdpTable);
return -1;
}
#elif (defined(NETSNMP_CAN_USE_SYSCTL) && defined(UDPCTL_PCBLIST))
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
size_t len;
int sname[] = { CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_PCBLIST };
char *udpcb_buf = NULL;
#if defined(dragonfly)
struct xinpcb *xig = NULL;
#else
struct xinpgen *xig = NULL;
#endif
UDPTABLE_ENTRY_TYPE *nnew;
udpTable_free(NULL, NULL);
/*
* Read in the buffer containing the UDP table data
*/
len = 0;
if (sysctl(sname, 4, 0, &len, 0, 0) < 0 ||
(udpcb_buf = malloc(len)) == NULL)
return -1;
if (sysctl(sname, 4, udpcb_buf, &len, 0, 0) < 0) {
free(udpcb_buf);
return -1;
}
/*
* Unpick this into the constituent 'xinpgen' structures, and extract
* the 'inpcb' elements into a linked list (built in reverse)
*/
#if defined(dragonfly)
xig = (struct xinpcb *) udpcb_buf;
#else
xig = (struct xinpgen *) udpcb_buf;
xig = (struct xinpgen *) ((char *) xig + xig->xig_len);
#endif
#if defined(dragonfly)
while (xig && ((char *)xig + xig->xi_len < udpcb_buf + len))
#else
while (xig && (xig->xig_len > sizeof(struct xinpgen)))
#endif
{
nnew = SNMP_MALLOC_TYPEDEF(UDPTABLE_ENTRY_TYPE);
if (!nnew)
break;
memcpy(&nnew->pcb, &((struct xinpcb *) xig)->xi_inp, sizeof(struct inpcb));
nnew->inp_next = udp_head;
udp_head = nnew;
#if defined(dragonfly)
xig = (struct xinpcb *) ((char *) xig + xig->xi_len);
#else
xig = (struct xinpgen *) ((char *) xig + xig->xig_len);
#endif
}
free(udpcb_buf);
if (udp_head) {
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (sysctl)\n"));
return 0;
}
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (sysctl)\n"));
return -1;
}
#elif defined(PCB_TABLE)
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
struct inpcbtable table;
struct inpcb *nnew, *entry;
udpTable_free(NULL, NULL);
if (!auto_nlist(UDB_SYMBOL, (char *) &table, sizeof(table))) {
DEBUGMSGTL(("mibII/udpTable", "Failed to read inpcbtable\n"));
return -1;
}
/*
* Set up a linked list
*/
entry = table.INP_FIRST_SYMBOL;
while (entry) {
nnew = SNMP_MALLOC_TYPEDEF(struct inpcb);
if (!nnew)
break;
if (!NETSNMP_KLOOKUP(entry, (char *) nnew, sizeof(struct inpcb))) {
DEBUGMSGTL(("mibII/udpTable:udpTable_load", "klookup failed\n"));
break;
}
entry = nnew->INP_NEXT_SYMBOL; /* Next kernel entry */
nnew->INP_NEXT_SYMBOL = udp_head;
udp_head = nnew;
if (entry == table.INP_FIRST_SYMBOL)
break;
}
if (udp_head) {
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (pcb_table)\n"));
return 0;
}
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (pcb_table)\n"));
return -1;
}
#elif defined(UDB_SYMBOL)
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
struct inpcb udp_inpcb;
struct inpcb *nnew, *entry;
udpTable_free(NULL, NULL);
if (!auto_nlist(UDB_SYMBOL, (char *) &udp_inpcb, sizeof(udp_inpcb))) {
DEBUGMSGTL(("mibII/udpTable", "Failed to read udb_symbol\n"));
return -1;
}
/*
* Set up a linked list
*/
entry = udp_inpcb.INP_NEXT_SYMBOL;
while (entry) {
nnew = SNMP_MALLOC_TYPEDEF(struct inpcb);
if (!nnew)
break;
if (!NETSNMP_KLOOKUP(entry, (char *) nnew, sizeof(struct inpcb))) {
DEBUGMSGTL(("mibII/udpTable:udpTable_load", "klookup failed\n"));
break;
}
entry = nnew->INP_NEXT_SYMBOL; /* Next kernel entry */
nnew->INP_NEXT_SYMBOL = udp_head;
udp_head = nnew;
if (entry == udp_inpcb.INP_NEXT_SYMBOL)
break;
}
if (udp_head) {
DEBUGMSGTL(("mibII/udpTable", "Loaded UDP Table (udb_symbol)\n"));
return 0;
}
DEBUGMSGTL(("mibII/udpTable", "Failed to load UDP Table (udb_symbol)\n"));
return -1;
}
#else /* UDB_SYMBOL */
int
udpTable_load(netsnmp_cache *cache, void *vmagic)
{
DEBUGMSGTL(("mibII/udpTable", "Loading UDP Table not implemented\n"));
return -1;
}
#endif /* UDB_SYMBOL */
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