/*
* void pmap_teardown(void);
*
* Called by skplugin to tear down this plugin.
*/
static void
pmap_teardown(
void)
{
size_t i;
pmap_data_t *pmap_data;
if (pmap_vector) {
for (i = 0; i < skVectorGetCount(pmap_vector); ++i) {
ASSERT_RESULT(skVectorGetValue(&pmap_data, pmap_vector, i),
int, 0);
pmap_data_destroy(pmap_data);
}
skVectorDestroy(pmap_vector);
pmap_vector = NULL;
}
}
/*
* Verify sensor by its class. Verify that the sensor supports the
* type(s) of its probe(s). Verify that enough information is
* present on the sensor to categorize a flow record.
*
* Invoked from rwflowpack by packlogic->verify_sensor_fn
*/
static int
packLogicVerifySensor(
skpc_sensor_t *sensor)
{
skpc_probe_t *probe;
sk_vector_t *probe_vec;
uint32_t count;
/* There is a single class, so no per-class verification is
* necessary. Make certain we have either snmp interface values
* or ip-blocks depending on the type of probe(s) associated with
* this sensor. */
/* get the probes for the sensor */
probe_vec = skVectorNew(sizeof(skpc_probe_t*));
if (probe_vec == NULL) {
return -1;
}
count = skpcSensorGetProbes(sensor, probe_vec);
/* this packing logic only supports a single probe per sensor */
if (count != 1) {
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tOnly one probe per sensor is supported"
" by the packing-logic\n\tfile '%s'"),
sensor->sensor_name,
plugin_path);
skVectorDestroy(probe_vec);
return -1;
}
skVectorGetValue(&probe, probe_vec, 0);
skVectorDestroy(probe_vec);
/* make certain the probe's type is valid */
switch (probe->probe_type) {
case PROBE_ENUM_NETFLOW_V5:
case PROBE_ENUM_NETFLOW_V9:
case PROBE_ENUM_IPFIX:
/* expected probe types */
break;
default:
assert(skpcProbetypeEnumtoName(probe->probe_type));
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tThe probe type '%s' is not supported in the"
" packing-logic\n\tfile '%s'"),
sensor->sensor_name,
skpcProbetypeEnumtoName(probe->probe_type),
plugin_path);
return -1;
}
/* Verify that we have enough information to determine the
* flowtype for every flow. These are the rules:
*
* 1. One of external-interface, external-ipblock, or
* external-ipset must be specified.
*
* 2. You cannot mix interfaces, ipblocks, and ipsets, with the
* excption that a null-interface which is always allowed.
*
* 3. Only one network may claim the remainder.
*
* 4. Using remainder for an ipblock or ipset requires that
* another interface has set an IPblock or an IPset.
*/
switch (sensor->decider[NETWORK_EXTERNAL].nd_type) {
case SKPC_UNSET:
/* It is an error when neither SNMP interfaces nor IP-blocks
* were specified for the external network. */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tMust specify %s-interface, %s-ipblock, or %s-ipset"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_EXTERNAL]);
return -1;
case SKPC_NEG_IPBLOCK:
skAppPrintErr("Negated IPblock logic not implemented");
exit(EXIT_FAILURE);
case SKPC_NEG_IPSET:
skAppPrintErr("Negated IPset logic not implemented");
exit(EXIT_FAILURE);
case SKPC_IPBLOCK:
/* Fine as long as INTERNAL is either empty or also contains
* IPblocks */
switch (sensor->decider[NETWORK_INTERNAL].nd_type) {
case SKPC_UNSET:
case SKPC_IPBLOCK:
case SKPC_REMAIN_IPBLOCK:
/* These are fine */
break;
case SKPC_NEG_IPBLOCK:
skAppPrintErr("Negated IPblock logic not implemented");
exit(EXIT_FAILURE);
case SKPC_NEG_IPSET:
skAppPrintErr("Negated IPset logic not implemented");
exit(EXIT_FAILURE);
case SKPC_INTERFACE:
case SKPC_REMAIN_INTERFACE:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipblock and %s-interface"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
case SKPC_IPSET:
case SKPC_REMAIN_IPSET:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipblock and %s-ipset"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
}
break;
case SKPC_REMAIN_IPBLOCK:
switch (sensor->decider[NETWORK_INTERNAL].nd_type) {
case SKPC_UNSET:
/* Accept for now, though this will be an error if
* NETWORK_NULL does not define an IPblock */
break;
case SKPC_NEG_IPBLOCK:
skAppPrintErr("Negated IPblock logic not implemented");
exit(EXIT_FAILURE);
case SKPC_NEG_IPSET:
skAppPrintErr("Negated IPset logic not implemented");
exit(EXIT_FAILURE);
case SKPC_REMAIN_IPBLOCK:
/* Cannot have multiple things requesting "remainder" */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tOnly one network value may use 'remainder'"),
sensor->sensor_name);
return -1;
case SKPC_IPBLOCK:
/* This is fine */
break;
case SKPC_INTERFACE:
case SKPC_REMAIN_INTERFACE:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipblock and %s-interface"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
case SKPC_IPSET:
case SKPC_REMAIN_IPSET:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipblock and %s-ipset"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
}
break;
case SKPC_INTERFACE:
case SKPC_REMAIN_INTERFACE:
/* Fine as long as INTERNAL and NULL are either empty or also
* contain interfaces */
switch (sensor->decider[NETWORK_INTERNAL].nd_type) {
case SKPC_UNSET:
case SKPC_INTERFACE:
case SKPC_REMAIN_INTERFACE:
switch (sensor->decider[NETWORK_NULL].nd_type) {
case SKPC_IPBLOCK:
case SKPC_NEG_IPBLOCK:
case SKPC_REMAIN_IPBLOCK:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-interface and %s-ipblock"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_NULL]);
return -1;
case SKPC_IPSET:
case SKPC_NEG_IPSET:
case SKPC_REMAIN_IPSET:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-interface and %s-ipset"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_NULL]);
return -1;
default:
break;
}
break;
case SKPC_IPBLOCK:
case SKPC_NEG_IPBLOCK:
case SKPC_REMAIN_IPBLOCK:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-interface and %s-ipblock"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
case SKPC_IPSET:
case SKPC_NEG_IPSET:
case SKPC_REMAIN_IPSET:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-interface and %s-ipset"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
}
break;
case SKPC_IPSET:
/* Fine as long as INTERNAL is either empty or also contains
* IPsets */
switch (sensor->decider[NETWORK_INTERNAL].nd_type) {
case SKPC_UNSET:
case SKPC_IPSET:
case SKPC_REMAIN_IPSET:
/* These are fine */
break;
case SKPC_NEG_IPSET:
skAppPrintErr("Negated IPset logic not implemented");
exit(EXIT_FAILURE);
case SKPC_NEG_IPBLOCK:
skAppPrintErr("Negated IPblock logic not implemented");
exit(EXIT_FAILURE);
case SKPC_INTERFACE:
case SKPC_REMAIN_INTERFACE:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipset and %s-interface"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
case SKPC_IPBLOCK:
case SKPC_REMAIN_IPBLOCK:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipset and %s-ipblock"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
}
break;
case SKPC_REMAIN_IPSET:
switch (sensor->decider[NETWORK_INTERNAL].nd_type) {
case SKPC_UNSET:
/* Accept for now, though this will be an error if
* NETWORK_NULL does not define an IPset */
break;
case SKPC_NEG_IPSET:
skAppPrintErr("Negated IPset logic not implemented");
exit(EXIT_FAILURE);
case SKPC_NEG_IPBLOCK:
skAppPrintErr("Negated IPblock logic not implemented");
exit(EXIT_FAILURE);
case SKPC_REMAIN_IPSET:
/* Cannot have multiple things requesting "remainder" */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tOnly one network value may use 'remainder'"),
sensor->sensor_name);
return -1;
case SKPC_IPSET:
/* This is fine */
break;
case SKPC_INTERFACE:
case SKPC_REMAIN_INTERFACE:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipset and %s-interface"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
case SKPC_IPBLOCK:
case SKPC_REMAIN_IPBLOCK:
/* Bad mix */
skAppPrintErr(("Cannot verify sensor '%s':\n"
"\tCannot mix %s-ipset and %s-ipblock"),
sensor->sensor_name,
net_names[NETWORK_EXTERNAL],
net_names[NETWORK_INTERNAL]);
return -1;
}
break;
}
return 0;
}
static skplugin_err_t
parseFlowtypes(
const char *opt_arg,
void *v_bitmap)
{
static int registered_fields = 0;
sk_bitmap_t **ft_bitmap;
sksite_error_iterator_t *err_iter = NULL;
sk_vector_t *ft_vec = NULL;
sk_flowtype_id_t ft;
int i = 0;
skplugin_err_t err = SKPLUGIN_OK;
int rv;
assert(v_bitmap);
ft_bitmap = (sk_bitmap_t**)v_bitmap;
if (NULL != *ft_bitmap) {
/* this is an attempt to re-create a list of flowtypes, which
* could happen if the first pass was generated by parsing an
* environment variable. clear the bitmap */
skBitmapClearAllBits(*ft_bitmap);
} else if (skBitmapCreate(ft_bitmap, SK_MAX_NUM_FLOWTYPES)) {
skAppPrintErr("Unable to create bitmap");
err = SKPLUGIN_ERR;
goto END;
}
ft_vec = skVectorNew(sizeof(sk_flowtype_id_t));
if (NULL == ft_vec) {
skAppPrintErr("Unable to create vector");
err = SKPLUGIN_ERR;
goto END;
}
rv = sksiteParseFlowtypeList(ft_vec, opt_arg, NULL, NULL, NULL, NULL,
&err_iter);
if (rv) {
if (rv < 0) {
skAppPrintErr("Memory or internal error while parsing flowtypes");
} else if (1 == rv) {
sksiteErrorIteratorNext(err_iter);
skAppPrintErr("Invalid flowtypes '%s': %s",
opt_arg, sksiteErrorIteratorGetMessage(err_iter));
assert(sksiteErrorIteratorNext(err_iter)
== SK_ITERATOR_NO_MORE_ENTRIES);
} else {
skAppPrintErr("Invalid flowtypes '%s': Found multiple errors:",
opt_arg);
while (sksiteErrorIteratorNext(err_iter) == SK_ITERATOR_OK) {
skAppPrintErr("%s", sksiteErrorIteratorGetMessage(err_iter));
}
}
err = SKPLUGIN_ERR;
goto END;
}
if (0 == skVectorGetCount(ft_vec)) {
skAppPrintErr("Invalid flowtypes '%s': No valid flowtypes found",
opt_arg);
err = SKPLUGIN_ERR;
goto END;
}
for (i = 0; 0 == skVectorGetValue(&ft, ft_vec, i); ++i) {
skBitmapSetBit(*ft_bitmap, ft);
}
if (incoming_flowtypes && outgoing_flowtypes && !registered_fields) {
registered_fields = 1;
err = skpinRegIPAddressField("int-ip", &internalIp, 0);
if (SKPLUGIN_OK != err) {
goto END;
}
err = skpinRegIPAddressField("ext-ip", &externalIp, 0);
if (SKPLUGIN_OK != err) {
goto END;
}
err = skpinRegIntField("int-port", 0, UINT16_MAX, &internalPort, 0);
if (SKPLUGIN_OK != err) {
goto END;
}
err = skpinRegIntField("ext-port", 0, UINT16_MAX, &externalPort, 0);
if (SKPLUGIN_OK != err) {
goto END;
}
}
END:
skVectorDestroy(ft_vec);
sksiteErrorIteratorFree(err_iter);
if (*ft_bitmap && err != SKPLUGIN_OK) {
skBitmapDestroy(ft_bitmap);
*ft_bitmap = NULL;
}
return err;
}
