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#include <net-snmp/net-snmp-config.h>
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#include <stddef.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/agent_callbacks.h>
#include <net-snmp/agent/agent_sysORTable.h>
#include <net-snmp/agent/sysORTable.h>
typedef struct data_node_s {
struct sysORTable data;
struct data_node_s* next;
struct data_node_s* prev;
}* data_node;
static data_node table = NULL;
static void
erase(data_node entry)
{
entry->data.OR_uptime = netsnmp_get_agent_uptime();
DEBUGMSGTL(("agent/sysORTable", "UNREG_SYSOR %p\n", &entry->data));
snmp_call_callbacks(SNMP_CALLBACK_APPLICATION, SNMPD_CALLBACK_UNREG_SYSOR,
&entry->data);
free(entry->data.OR_oid);
free(entry->data.OR_descr);
if (entry->next == entry)
table = NULL;
else {
entry->next->prev = entry->prev;
entry->prev->next = entry->next;
if (entry == table)
table = entry->next;
}
free(entry);
}
void
netsnmp_sysORTable_foreach(void (*f)(const struct sysORTable*, void*), void* c)
{
DEBUGMSGTL(("agent/sysORTable", "foreach(%p, %p)\n", f, c));
if(table) {
data_node run = table;
do {
data_node tmp = run;
run = run->next;
f(&tmp->data, c);
} while(table && run != table);
}
}
int
register_sysORTable_sess(oid * oidin,
size_t oidlen,
const char *descr, netsnmp_session * ss)
{
data_node entry;
DEBUGMSGTL(("agent/sysORTable", "registering: "));
DEBUGMSGOID(("agent/sysORTable", oidin, oidlen));
DEBUGMSG(("agent/sysORTable", ", session %p\n", ss));
entry = (data_node)calloc(1, sizeof(struct data_node_s));
if (entry == NULL) {
DEBUGMSGTL(("agent/sysORTable", "Failed to allocate new entry\n"));
return SYS_ORTABLE_REGISTRATION_FAILED;
}
entry->data.OR_descr = strdup(descr);
if (entry->data.OR_descr == NULL) {
DEBUGMSGTL(("agent/sysORTable", "Failed to allocate new sysORDescr\n"));
free(entry);
return SYS_ORTABLE_REGISTRATION_FAILED;
}
entry->data.OR_oid = (oid *) malloc(sizeof(oid) * oidlen);
if (entry->data.OR_oid == NULL) {
DEBUGMSGTL(("agent/sysORTable", "Failed to allocate new sysORID\n"));
free(entry->data.OR_descr);
free(entry);
return SYS_ORTABLE_REGISTRATION_FAILED;
}
memcpy(entry->data.OR_oid, oidin, sizeof(oid) * oidlen);
entry->data.OR_oidlen = oidlen;
entry->data.OR_sess = ss;
if(table) {
entry->next = table;
entry->prev = table->prev;
table->prev->next = entry;
table->prev = entry;
} else
table = entry->next = entry->prev = entry;
entry->data.OR_uptime = netsnmp_get_agent_uptime();
snmp_call_callbacks(SNMP_CALLBACK_APPLICATION,
SNMPD_CALLBACK_REG_SYSOR, &entry->data);
return SYS_ORTABLE_REGISTERED_OK;
}
int
register_sysORTable(oid * oidin, size_t oidlen, const char *descr)
{
return register_sysORTable_sess(oidin, oidlen, descr, NULL);
}
int
unregister_sysORTable_sess(oid * oidin,
size_t oidlen, netsnmp_session * ss)
{
int any_unregistered = 0;
DEBUGMSGTL(("agent/sysORTable", "sysORTable unregistering: "));
DEBUGMSGOID(("agent/sysORTable", oidin, oidlen));
DEBUGMSG(("agent/sysORTable", ", session %p\n", ss));
if(table) {
data_node run = table;
do {
data_node tmp = run;
run = run->next;
if (tmp->data.OR_sess == ss &&
snmp_oid_compare(oidin, oidlen,
tmp->data.OR_oid, tmp->data.OR_oidlen) == 0) {
erase(tmp);
any_unregistered = 1;
}
} while(table && run != table);
}
if (any_unregistered) {
DEBUGMSGTL(("agent/sysORTable", "unregistering successfull\n"));
return SYS_ORTABLE_UNREGISTERED_OK;
} else {
DEBUGMSGTL(("agent/sysORTable", "unregistering failed\n"));
return SYS_ORTABLE_NO_SUCH_REGISTRATION;
}
}
int
unregister_sysORTable(oid * oidin, size_t oidlen)
{
return unregister_sysORTable_sess(oidin, oidlen, NULL);
}
void
unregister_sysORTable_by_session(netsnmp_session * ss)
{
DEBUGMSGTL(("agent/sysORTable",
"sysORTable unregistering session %p\n", ss));
if(table) {
data_node run = table;
do {
data_node tmp = run;
run = run->next;
if (((ss->flags & SNMP_FLAGS_SUBSESSION) &&
tmp->data.OR_sess == ss) ||
(!(ss->flags & SNMP_FLAGS_SUBSESSION) && tmp->data.OR_sess &&
tmp->data.OR_sess->subsession == ss))
erase(tmp);
} while(table && run != table);
}
DEBUGMSGTL(("agent/sysORTable",
"sysORTable unregistering session %p done\n", ss));
}
static int
register_sysOR_callback(int majorID, int minorID, void *serverarg,
void *clientarg)
{
struct sysORTable *parms = (struct sysORTable *) serverarg;
return register_sysORTable_sess(parms->OR_oid, parms->OR_oidlen,
parms->OR_descr, parms->OR_sess);
}
static int
unregister_sysOR_by_session_callback(int majorID, int minorID,
void *serverarg, void *clientarg)
{
netsnmp_session *session = (netsnmp_session *) serverarg;
unregister_sysORTable_by_session(session);
return 0;
}
static int
unregister_sysOR_callback(int majorID, int minorID, void *serverarg,
void *clientarg)
{
struct sysORTable *parms = (struct sysORTable *) serverarg;
return unregister_sysORTable_sess(parms->OR_oid,
parms->OR_oidlen,
parms->OR_sess);
}
void
init_agent_sysORTable(void)
{
DEBUGMSGTL(("agent/sysORTable", "init_agent_sysORTable\n"));
snmp_register_callback(SNMP_CALLBACK_APPLICATION,
SNMPD_CALLBACK_REQ_REG_SYSOR,
register_sysOR_callback, NULL);
snmp_register_callback(SNMP_CALLBACK_APPLICATION,
SNMPD_CALLBACK_REQ_UNREG_SYSOR,
unregister_sysOR_callback, NULL);
snmp_register_callback(SNMP_CALLBACK_APPLICATION,
SNMPD_CALLBACK_REQ_UNREG_SYSOR_SESS,
unregister_sysOR_by_session_callback, NULL);
}
void
shutdown_agent_sysORTable(void)
{
DEBUGMSGTL(("agent/sysORTable", "shutdown_sysORTable\n"));
while(table)
erase(table);
}
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