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rb_sensor.c
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rb_sensor.c
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/*
Copyright (C) 2016 Eneo Tecnologia S.L.
Author: Eugenio Perez <eupm90@gmail.com>
Based on Luca Deri nprobe 6.22 collector
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "f2k.h"
#include "rb_sensor.h"
#include "rb_mac.h"
#include <librd/rdavl.h>
#include <librd/rdmem.h>
#include <jansson.h>
/*******************************************************************************/
/* RB CONFIGURATION */
/*******************************************************************************/
#ifdef HAVE_UDNS
static const char *dns_ptr_client_key = "dns_ptr_client";
static const char *dns_ptr_target_key = "dns_ptr_target";
#endif
struct network_tree_node {
#ifdef NETWORK_TREE_NODE_MAGIC
uint64_t magic;
#endif
rd_avl_node_t avl_node;
netAddress_t netAddress;
char *name;
char *addres_as_str;
};
static void ipv6_and(uint8_t dst[16],const uint8_t s1[16],const uint8_t s2[16]){
/// @TODO increase unit size
int i;
for(i=0;i<16;++i){
dst[i] = s1[i]&s2[i];
}
}
static int compare_networks(const void *_network1,const void *_network2){
const struct network_tree_node *network1 = _network1;
const struct network_tree_node *network2 = _network2;
#ifdef NETWORK_TREE_NODE_MAGIC
assert(NETWORK_TREE_NODE_MAGIC == network1->magic);
assert(NETWORK_TREE_NODE_MAGIC == network2->magic);
#endif
uint8_t _net1[16];
uint8_t _net2[16];
uint8_t netmask[16];
ipv6_and(netmask,network1->netAddress.networkMask,
network2->netAddress.networkMask);
apply_netmask(_net1,network1->netAddress.network,netmask);
apply_netmask(_net2,network2->netAddress.network,netmask);
return memcmp(_net1,_net2,sizeof(_net1));
}
/* ******** */
/// Name and description of an id (application id -> application name, for
/// example)
struct id_name_description_assoc {
#ifndef NDEBUG
#define APPLICATION_ID_MAGIC 0xA1CA101DA1CA1CA1
#define SELECTOR_ID_MAGIC 0x3EC01DA1C3EC01DA
#define INTERFACE_ID_MAGIC 0x13AE1DA1C13AE1DA
uint64_t magic; ///< Magic to assert coherency
#else
#define APPLICATION_ID_MAGIC 0
#define SELECTOR_ID_MAGIC 0
#define INTERFACE_ID_MAGIC 0
#endif
uint64_t id; ///< Identification
char *name; ///< id name
char *description; ///< Id description
rd_avl_node_t avl_node; ///< AVL node
};
/// Typedef to maintain coherency
typedef struct id_name_description_assoc application_id_t;
/**
* Compare two (id, name, description) ids
* @param vnode1 Node 1
* @param vnode2 Node 2
* @param magic Magic (if NDEBUG, the parameter is ignored)
* @return node2->id - node1->id
*/
static int name_id_description_cmp(const void *vnode1, const void *vnode2,
uint64_t magic) {
const struct id_name_description_assoc *node1 = vnode1;
const struct id_name_description_assoc *node2 = vnode2;
#ifdef NDEBUG
(void)magic;
#endif
assert(node1);
assert(node2);
assert(node1->magic == magic);
assert(node2->magic == magic);
return node2->id - node1->id;
}
/**
* Compare two application id node
* @param aid1 Application id 1
* @param aid2 Application id 2
* @return app_id->id name_id_description_cmp
*/
static int application_id_cmp(const void *aid1, const void *aid2) {
return name_id_description_cmp(aid1, aid2, APPLICATION_ID_MAGIC);
}
/**
* Compare two selector id
* @param aid1 Application id 1
* @param aid2 Application id 2
* @return app_id->id name_id_description_cmp
*/
static int selector_id_cmp(const void *sid1, const void *sid2) {
return name_id_description_cmp(sid1, sid2, APPLICATION_ID_MAGIC);
}
/**
* Compare two interfaces id
* @param aid1 Application id 1
* @param aid2 Application id 2
* @return app_id->id name_id_description_cmp
*/
static int interface_id_cmp(const void *iid1, const void *iid2) {
return name_id_description_cmp(iid1, iid2, INTERFACE_ID_MAGIC);
}
/* ******** */
#define MAC_ADDRESS_TREE_NODE_MAGIC 0xACADDE55EE0EA1C
struct mac_address_tree_node {
#ifdef MAC_ADDRESS_TREE_NODE_MAGIC
uint64_t magic;
#endif
uint64_t mac;
rd_avl_node_t avl_node;
};
/* ******** */
/// Define an observation id
struct observation_id_s {
#ifndef NDEBUG
#define OBSERVATION_ID_MAGIC 0xB53A101A1CB53A10LL
uint64_t magic; ///< Magic constant to assert coherency
#endif
uint32_t observation_id;
rd_avl_t home_networks;
rd_avl_t applications;
rd_avl_t selectors;
rd_avl_t interfaces;
rd_memctx_t memctx;
char *enrichment;
int64_t fallback_first_switch;
#ifdef HAVE_UDNS
#define ENABLE_PTR_DNS_CLIENT 1<<0
#define ENABLE_PTR_DNS_TARGET 1<<1
#endif
#define EXPORTER_SPAN 1<<2
#define EXPORTER_IN_WAN_SIDE 1<<3
uint8_t observation_domain_flags;
// @TODO merge in one template_database struct.
FlowSetV9Ipfix *up_to_512_templates[512]; /* Array: direct element access */
LIST_HEAD(, flowSetV9Ipfix) over_512_templates; /* Linked List */
rd_avl_node_t avl_node;
SLIST_ENTRY(observation_id_s) list_node;
atomic_uint64_t refcnt;
};
#ifdef OBSERVATION_ID_MAGIC
#define assert_observation_id(X) assert(OBSERVATION_ID_MAGIC == (X)->magic)
#else
#define assert_observation_id(X)
#endif
uint32_t observation_id_num(const observation_id_t *observation_id) {
return observation_id->observation_id;
}
static void free_v9_ipfix_template(struct flowSetV9Ipfix *template) {
free(template);
}
static void observation_id_done(observation_id_t *observation_id) {
size_t i;
struct flowSetV9Ipfix *node;
for (i=0; i<RD_ARRAYSIZE(observation_id->up_to_512_templates); ++i) {
node = observation_id->up_to_512_templates[i];
if (node) {
free_v9_ipfix_template(node);
}
}
while(!LIST_EMPTY(&observation_id->over_512_templates)) {
node = LIST_FIRST(&observation_id->over_512_templates);
LIST_REMOVE(node, entry);
free_v9_ipfix_template(node);
}
rd_memctx_freeall(&observation_id->memctx);
rd_memctx_destroy(&observation_id->memctx);
free(observation_id);
}
void observation_id_decref(observation_id_t *observation_id) {
if (ATOMIC_OP(sub, fetch, &observation_id->refcnt.value, 1) == 0) {
observation_id_done(observation_id);
}
}
static int observation_id_cmp(const void *vobs_id1, const void *vobs_id2) {
const observation_id_t *observation_id1 = vobs_id1;
const observation_id_t *observation_id2 = vobs_id2;
assert_observation_id(observation_id1);
assert_observation_id(observation_id2);
return observation_id1->observation_id - observation_id2->observation_id;
}
/** Find a (id, name, description) tuple
* @param avl AVL to find tuple
* @param id Description id
* @param magic Expected magic (if !NDEBUG is ignored)
* @return Found node
*/
static struct id_name_description_assoc *find_id_description_assoc(
rd_avl_t *avl, uint64_t id, uint64_t magic) {
#ifdef NDEBUG
(void)magic;
#endif
const struct id_name_description_assoc dummy = {
#ifndef NDEBUG
.magic = magic,
#endif
.id = id,
};
return RD_AVL_FIND(avl, &dummy);
}
/** Check if string is equal, checking if old string exists
* @param old Old string
* @param new New string
* @param new_len New string length
* @return true if equal, false in other case
*/
static bool string_equal(const char *old, const char *new, size_t new_len) {
// We have a new string and it's different than old
return !(new && new_len > 0 && (!old || strncmp(new, old, new_len)));
}
/** Update an id_name_description_assoc string if needed
* @param memctx Allocation memory context
* @param old Old string
* @param new New string
* @param new_size New string length
* @return True if all ok, false if allocation fails
*/
static bool id_name_description_update_string(rd_memctx_t *memctx,
char **old, const char *new, const size_t new_len,
const char *memory_error_msg, const char *memory_error_field) {
assert(old);
if (unlikely(!string_equal(*old, new, new_len))) {
if (*old) {
rd_memctx_free(memctx, *old);
}
*old = rd_memctx_malloc(memctx, new_len + 1);
if (unlikely(NULL == *old)) {
traceEvent(TRACE_ERROR, "Couldn't allocate %s %s", memory_error_msg,
memory_error_field);
return false;
}
memcpy(*old, new, new_len);
(*old)[new_len] = '\0';
}
return true;
}
/** Add a (id, name, description) node to an AVL
* @param avl AVL
* @param memctx Allocations memory context
* @param id Tuple ID
* @param name Tuple name
* @param name_len Tuple name length
* @param description Tuple description
* @param description_len Tuple description length
* @param memory_error_msg Kind of node (for error shows purposes)
* @param magic Magic to assert coherency, ignored if !NDEBUG
*/
static void add_id_name_description(rd_avl_t *avl, rd_memctx_t *memctx,
uint64_t id, const char *name, size_t name_len,
const char *description, size_t description_len,
const char *memory_error_msg, uint64_t magic) {
assert(avl);
struct id_name_description_assoc *current = find_id_description_assoc(avl, id,
magic);
const bool node_in_avl = current;
if (unlikely(!node_in_avl)) {
current = rd_memctx_calloc(memctx, 1, sizeof(*current));
if (unlikely(NULL == current)) {
traceEvent(TRACE_ERROR, "Couldn't allocate %s node", memory_error_msg);
goto err;
}
#ifndef NDEBUG
current->magic = magic;
#else
(void)magic;
#endif
current->id = id;
}
const bool name_rc = id_name_description_update_string(memctx, ¤t->name,
name, name_len, memory_error_msg, "name");
if (unlikely(!name_rc)) {
goto err;
}
const bool description_rc = id_name_description_update_string(memctx,
¤t->description, description, description_len, memory_error_msg,
"description");
if (unlikely(!description_rc)) {
goto err;
}
if (unlikely(!node_in_avl)) {
RD_AVL_INSERT(avl, current, avl_node);
}
return;
err:
if (current) {
if (node_in_avl) {
RD_AVL_REMOVE_ELM(avl, current);
}
if (current->name) {
rd_memctx_free(memctx, current->name);
}
if (current->description) {
rd_memctx_free(memctx, current->description);
}
rd_memctx_free(memctx, current);
}
}
void observation_id_add_application_id(observation_id_t *observation_id,
uint64_t application_id, const char *application_name,
size_t application_name_len) {
assert(observation_id);
add_id_name_description(&observation_id->applications,
&observation_id->memctx, application_id, application_name,
application_name_len, NULL, 0, "APPLICATION_ID", APPLICATION_ID_MAGIC);
}
void observation_id_add_selector_id(observation_id_t *observation_id,
uint64_t selector_id, const char *selector_name,
size_t selector_name_len) {
assert(observation_id);
add_id_name_description(&observation_id->selectors,
&observation_id->memctx, selector_id, selector_name,
selector_name_len, NULL, 0, "SELECTOR_ID", SELECTOR_ID_MAGIC);
}
void observation_id_add_interface(observation_id_t *observation_id,
uint64_t interface_id, const char *interface_name,
size_t interface_name_len, const char *interface_description,
size_t interface_description_len) {
assert(observation_id);
add_id_name_description(&observation_id->interfaces,
&observation_id->memctx, interface_id, interface_name,
interface_name_len, interface_description, interface_description_len,
"INTERFACE_ID", INTERFACE_ID_MAGIC);
}
/**
* Name of a (id, name, description) record
* @param avl AVL to search record
* @param id Record id
* @param magic Magic to assert coherency (ignored if !NDEBUG)
* @return Tuple name
*/
static const char *id_name_description_assoc_name(rd_avl_t *avl, uint64_t id,
uint64_t magic) {
struct id_name_description_assoc *assoc = find_id_description_assoc(avl, id,
magic);
return assoc ? assoc->name : NULL;
}
/**
* Description of a (id, name, description) record
* @param avl AVL to search record
* @param id Record id
* @param magic Magic to assert coherency (ignored if !NDEBUG)
* @return Tuple name
*/
static const char *id_name_description_assoc_description(rd_avl_t *avl,
uint64_t id, uint64_t magic) {
struct id_name_description_assoc *assoc = find_id_description_assoc(avl, id,
magic);
return assoc ? assoc->description : NULL;
}
const char *observation_id_application_name(observation_id_t *observation_id,
uint64_t application_id) {
return id_name_description_assoc_name(&observation_id->applications,
application_id, APPLICATION_ID_MAGIC);
}
const char *observation_id_selector_name(observation_id_t *observation_id,
uint64_t selector_id) {
return id_name_description_assoc_name(&observation_id->selectors,
selector_id, SELECTOR_ID_MAGIC);
}
const char *observation_id_interface_name(observation_id_t *observation_id,
uint64_t interface_id) {
return id_name_description_assoc_name(&observation_id->interfaces,
interface_id, INTERFACE_ID_MAGIC);
}
const char *observation_id_interface_description(
observation_id_t *observation_id, uint64_t interface_id) {
return id_name_description_assoc_description(&observation_id->interfaces,
interface_id, INTERFACE_ID_MAGIC);
}
static bool observation_id_add_home_net(observation_id_t *observation_id,
json_t *json_home_net, const struct sensor *sensor) {
assert(sensor);
assert(observation_id);
assert(json_home_net);
json_error_t jerr;
const char *network=NULL, *network_name_str=NULL;
if(!json_is_object(json_home_net)){
traceEvent(TRACE_ERROR,
"Could not get one network of sensor %s, observation_id%"PRIu32
": is not an object", sensor_ip_string(sensor),
observation_id_num(observation_id));
return false;
}
const int unpack_rc = json_unpack_ex(json_home_net,&jerr,0,"{s:s,s:s}",
"network_name",&network_name_str,"network",&network);
if(unpack_rc != 0) {
traceEvent(TRACE_ERROR,"Can't unpack home net: %s",jerr.text);
return false;
}
struct network_tree_node *home_net = rd_memctx_calloc(&observation_id->memctx,
1, sizeof(*home_net));
if(NULL==home_net){
traceEvent(TRACE_ERROR,
"Could not allocate home net of sensor %s observation id %"PRIu32,
sensor_ip_string(sensor), observation_id_num(observation_id));
return false;
}
#ifdef NETWORK_TREE_NODE_MAGIC
home_net->magic = NETWORK_TREE_NODE_MAGIC;
#endif
if(!network_name_str){
traceEvent(TRACE_ERROR,
"Sensor %s observation id %"PRIu32" has a network defined with no name.",
sensor_ip_string(sensor), observation_id_num(observation_id));
return false;
}
home_net->name = rd_memctx_strdup(&observation_id->memctx, network_name_str);
if(NULL == home_net->name){
traceEvent(TRACE_ERROR,"Could not allocate sensor %s network name %s.",
sensor_ip_string(sensor), network_name_str);
return false;
}
if(!network){
traceEvent(TRACE_ERROR,"Sensor %s has a network defined with no address.",
sensor_ip_string(sensor));
return false;
}
const bool parseAddressrc = safe_parse_address(network,&home_net->netAddress);
if(!parseAddressrc){
traceEvent(TRACE_ERROR,"Sensor %s has a home network with an invalid ip address (%s).",
sensor_ip_string(sensor),network);
return false;
}
home_net->addres_as_str = rd_memctx_strdup(&observation_id->memctx, network);
rd_avl_insert(&observation_id->home_networks, home_net, &home_net->avl_node);
return true;
}
static bool parse_observation_id_home_nets(observation_id_t *observation_id,
const json_t *home_nets, const struct sensor *sensor) {
bool rc = true;
if(!json_is_array(home_nets)){
traceEvent(TRACE_ERROR,"home_nets in not an array in sensor %s.",
sensor_ip_string(sensor));
}else{
size_t net_index;
json_t *value;
json_array_foreach(home_nets, net_index, value) {
if (!rc) {
break;
}
rc = observation_id_add_home_net(observation_id, value, sensor);
}
}
return rc;
}
static bool parse_observation_id_enrichment(observation_id_t *observation_id,
const json_t *enrichment, const struct sensor *sensor) {
if(!json_is_object(enrichment)) {
traceEvent(TRACE_ERROR,
"Enrichment field is not an object in sensor %s osbervation id %"PRIu32,
sensor_ip_string(sensor), observation_id_num(observation_id));
return false;
} else {
char *tmp_enrichment = json_dumps(enrichment,
JSON_COMPACT|JSON_ENSURE_ASCII);
if(tmp_enrichment){
// tmp_enrichment == "{\"hello\":\"world\"}". We want delete brackets.
observation_id->enrichment = rd_memctx_strdup(&observation_id->memctx,
&tmp_enrichment[1]);
char *last_bracket = strrchr(observation_id->enrichment,'}');
if(last_bracket)
*last_bracket = '\0';
free(tmp_enrichment);
if(!(strlen(observation_id->enrichment)>0)) {
/* We don't need to mantain a null buffer if enrichment == {} */
rd_memctx_free(&observation_id->memctx, observation_id->enrichment);
observation_id->enrichment = NULL;
}
}
return true;
}
}
#ifdef HAVE_UDNS
static bool parse_observation_id_dns0(observation_id_t *observation_id,
const json_t *dns_ptr_value, const char *key, const char *sensor_name,
int flag) {
if(NULL != dns_ptr_value) {
if(!json_is_boolean(dns_ptr_value)) {
traceEvent(TRACE_ERROR, "%s is not a boolean in sensor %s observation id"
" %"PRIu32", can't parse it", key, sensor_name,
observation_id_num(observation_id));
return false;
} else if (json_is_true(dns_ptr_value)) {
observation_id->observation_domain_flags |= flag;
}
}
return true;
}
static void parse_observation_id_dns(observation_id_t *observation_id,
const char *sensor_name, const json_t *dns_ptr_client,
const json_t *dns_ptr_target) {
parse_observation_id_dns0(observation_id, dns_ptr_client, dns_ptr_client_key,
sensor_name, ENABLE_PTR_DNS_CLIENT);
parse_observation_id_dns0(observation_id, dns_ptr_target, dns_ptr_target_key,
sensor_name, ENABLE_PTR_DNS_TARGET);
}
#endif /* HAVE_UDNS */
static bool parse_observation_id(observation_id_t *observation_id,
json_t *jobservation_id, uint32_t observation_id_n,
const struct sensor *sensor) {
json_error_t jerr;
int span_mode = false, exporter_in_wan_side = false;
const json_t *home_nets=NULL, *enrichment=NULL, *routers_macs=NULL;
json_int_t fallback_first_switch = 0;
#ifdef HAVE_UDNS
const json_t *dns_ptr_client=NULL,*dns_ptr_target=NULL;
#endif
const int unpack_rc = json_unpack_ex(jobservation_id, &jerr, 0,
"{s?o,s?o,s?b,s?b,s?o,s?I}",
"home_nets", &home_nets,
"enrichment", &enrichment,
"span_port", &span_mode,
"exporter_in_wan_side", &exporter_in_wan_side,
"routers_macs", &routers_macs,
"fallback_first_switch", &fallback_first_switch);
if (unpack_rc != 0) {
traceEvent(TRACE_ERROR,
"Can't parse sensor %s observation id %"PRIu32" network: %s",
sensor_ip_string(sensor), observation_id_n, jerr.text);
return false;
}
if(home_nets) {
parse_observation_id_home_nets(observation_id, home_nets, sensor);
}
if(enrichment) {
parse_observation_id_enrichment(observation_id, enrichment, sensor);
}
if (routers_macs) {
traceEvent(TRACE_ERROR,
"Observation id's router macs support has been deprecated");
}
observation_id->fallback_first_switch = fallback_first_switch;
#ifdef HAVE_UDNS
const int unpack_dns_rc = json_unpack_ex(jobservation_id, &jerr, 0,
"{s?o,s?o}", dns_ptr_client_key, &dns_ptr_client,
dns_ptr_target_key, &dns_ptr_target);
if (unpack_dns_rc != 0) {
traceEvent(TRACE_ERROR, "Can't unpack sensor %s observation id %"PRIu32
"DNS attributes: %s", sensor_ip_string(sensor), observation_id_n,
jerr.text);
} else {
parse_observation_id_dns(observation_id, sensor_ip_string(sensor),
dns_ptr_client, dns_ptr_target);
}
#endif
if (span_mode) {
observation_id->observation_domain_flags |= EXPORTER_SPAN;
}
if (exporter_in_wan_side) {
observation_id->observation_domain_flags |= EXPORTER_IN_WAN_SIDE;
}
return observation_id;
}
static observation_id_t *observation_id_new(uint32_t observation_id,
json_t *jobservation_id, const struct sensor *sensor) {
observation_id_t *ret = calloc(1, sizeof(*ret));
if (unlikely(NULL == ret)) {
traceEvent(TRACE_ERROR,
"Couldn't allocate observation id (out of memory?)");
return NULL;
}
#ifdef OBSERVATION_ID_MAGIC
ret->magic = OBSERVATION_ID_MAGIC;
#endif
ret->observation_id = observation_id;
rd_avl_init(&ret->home_networks, compare_networks, 0);
rd_avl_init(&ret->applications, application_id_cmp, 0);
rd_avl_init(&ret->selectors, selector_id_cmp, 0);
rd_avl_init(&ret->interfaces, interface_id_cmp, 0);
rd_memctx_init(&ret->memctx, NULL, RD_MEMCTX_F_TRACK);
ret->refcnt.value = 1;
LIST_INIT(&ret->over_512_templates);
const bool parse_oid_rc = parse_observation_id(ret,
jobservation_id, observation_id, sensor);
if (!parse_oid_rc) {
observation_id_decref(ret);
ret = NULL;
}
return ret;
}
/// Sensor defined by a network, that have observations ids
struct sensor {
#ifndef NDEBUG
/// Magic constant to assert coherency
#define SENSOR_MAGIC 0xABC123DEF098
uint64_t magic; //< Magic to assert coherency
#endif
/// network the sensor belongs to
struct {
netAddress_t ip;
const char *ip_str;
} network;
/** Associated worker, so the same sensor always goes to the
same worker, avoiding reordering and data races
@todo worker by observation id? */
worker_t *worker;
rd_avl_t observations_id_db; ///< Observation id database
observation_id_t *default_observation_id; ///< default observation id
SLIST_HEAD(,observation_id_s) observations_id_list;
rd_avl_node_t avl_node;
SLIST_ENTRY(sensor) list_node;
atomic_uint64_t refcnt; ///< Reference counter
};
worker_t *sensor_worker(const struct sensor *sensor) {
return sensor->worker;
}
static observation_id_t dummy_observation_id(uint32_t observation_id) {
const observation_id_t ret = {
#ifdef OBSERVATION_ID_MAGIC
.magic=OBSERVATION_ID_MAGIC,
#endif
.observation_id = observation_id,
};
return ret;
}
const char *sensor_ip_string(const struct sensor *sensor){
return sensor->network.ip_str;
}
const char *observation_id_enrichment(const observation_id_t *obs_id){
return obs_id->enrichment;
}
bool is_span_observation_id(const observation_id_t *observation_id) {
return observation_id->observation_domain_flags & EXPORTER_SPAN;
}
bool is_exporter_in_wan_side(const observation_id_t *observation_id) {
return observation_id->observation_domain_flags & EXPORTER_IN_WAN_SIDE;
}
int64_t observation_id_fallback_first_switch(const observation_id_t *obs_id) {
return obs_id->fallback_first_switch;
}
static const struct network_tree_node *network_node(
observation_id_t *observation_id,
const uint8_t ip[16]){
assert(observation_id);
int i;
struct network_tree_node dummy_network_tree_node = {
#ifdef NETWORK_TREE_NODE_MAGIC
.magic = NETWORK_TREE_NODE_MAGIC,
#endif
};
/* @TODO
memcpy(dummy_network_tree_node.netAddress.network,ip,sizeof(ip));
memset(dummy_network_tree_node.netAddress.networkMask,0xFF,sizeof(ip));
memcpy(dummy_network_tree_node.netAddress.broadcast,ip,sizeof(ip));
*/
for(i=0;i<16;++i){
dummy_network_tree_node.netAddress.network[i] =
dummy_network_tree_node.netAddress.broadcast[i] = ip[i];
dummy_network_tree_node.netAddress.networkMask[i] = 0xff;
}
return RD_AVL_FIND(&observation_id->home_networks, &dummy_network_tree_node);
}
const char *network_ip(observation_id_t *obs_id, const uint8_t ip[16]) {
const struct network_tree_node *node = network_node(obs_id, ip);
return node?node->addres_as_str:NULL;
}
const char *network_name(observation_id_t *obs_id, const uint8_t ip[16]) {
const struct network_tree_node *node = network_node(obs_id, ip);
return node?node->name:NULL;
}
#ifdef HAVE_UDNS
bool observation_id_want_client_dns(const observation_id_t *oid) {
return oid->observation_domain_flags & ENABLE_PTR_DNS_CLIENT;
}
bool observation_id_want_target_dns(const observation_id_t *oid) {
return oid->observation_domain_flags & ENABLE_PTR_DNS_TARGET;
}
#endif
struct bad_sensor {
#ifndef NDEBUG
#define BAD_SENSOR_MAGIC 0xBAD5350A1CBAD535
uint64_t magic;
#endif
uint32_t ip;
rd_avl_node_t avl_node;
};
typedef SLIST_HEAD(, sensor) sensors_list_t;
/// Sensors database
struct rb_sensors_db {
#ifndef NDEBUG
/// Magic constant to assert coherence
#define RB_DATABASE_MAGIC 0xBDAABAEA1C
uint64_t magic; //< Magic to assert coherence
#endif
sensors_list_t sensors_list; //< List of sensors
/// sensors (networks) db
struct {
rd_avl_t avl;
} sensors;
/// bad sensors db
struct {
rd_avl_t avl;
rd_memctx_t memctx;
} bad_sensors;
listener_list new_listeners; //< Listeners that have to open
json_t *root; //< Json data
};
static int compare_bad_sensors(const void *_s1,const void *_s2)
{
const struct bad_sensor *s1 = _s1;
const struct bad_sensor *s2 = _s2;
assert(s1->magic == BAD_SENSOR_MAGIC);
assert(s2->magic == BAD_SENSOR_MAGIC);
return s1->ip > s2->ip ? 1 : (s2->ip==s1->ip ? 0 : -1);
}
static int compare_sensors(const void *_s1,const void *_s2)
{
const struct sensor *s1 = _s1;
const struct sensor *s2 = _s2;
assert(s1->magic == SENSOR_MAGIC);
assert(s2->magic == SENSOR_MAGIC);
uint8_t ipv6[16];
apply_netmask(ipv6, s1->network.ip.network, s2->network.ip.networkMask);
return memcmp(ipv6,&s2->network.ip,sizeof(ipv6));
}
static struct bad_sensor *find_bad_sensor(uint64_t ip,struct rb_sensors_db *db)
{
const struct bad_sensor proposed_sensor = {
#ifdef SENSOR_NETWORK_MAGIC
.magic = SENSOR_NETWORK_MAGIC,
#endif
.ip = ip,
};
return RD_AVL_FIND(&db->bad_sensors.avl,&proposed_sensor);
}
int addBadSensor(struct rb_sensors_db *database,const uint64_t sensor_ip) {
struct bad_sensor *old_sensor = find_bad_sensor(sensor_ip,database);
if(NULL==old_sensor) {
if(unlikely(readOnlyGlobals.enable_debug)) {
char buf[BUFSIZ];
traceEvent(TRACE_INFO,"%s marked as bad sensor",
_intoaV4(sensor_ip, buf, sizeof(buf)));
}
struct bad_sensor *sensor = rd_memctx_calloc(&database->bad_sensors.memctx,
1, sizeof(struct bad_sensor));
#ifdef SENSOR_NETWORK_MAGIC
sensor->magic = SENSOR_NETWORK_MAGIC;
#endif
sensor->ip = sensor_ip;
rd_avl_insert(&database->bad_sensors.avl, sensor, &sensor->avl_node);
return 1;
} else {
return 0;
}
}
static uint32_t parse_observation_id_number(const char *debug_ip_str,
const char *num, bool *ok) {
static const uint32_t max_observation_id = 0xffffffff;
assert(num);
assert(ok);
char *endptr = NULL;
const unsigned long oid = strtoul(num, &endptr, 10);
if ('\0' != *endptr) {
traceEvent(TRACE_ERROR, "Couldn't parse sensor %s observation id %s"
" number, skipping", debug_ip_str, num);
*ok = false;
return 0;
}
if (oid > max_observation_id) {
traceEvent(TRACE_ERROR,
"Couldn't parse sensor %s observation_id %s: Number too high %"PRIu32,
debug_ip_str, num, max_observation_id);
*ok = false;
}
*ok = true;
return oid;
}
static struct sensor *parse_sensor(json_t *jsensor, const char *ip_str) {
static const char observations_id_key[] = "observations_id";
const char *observation_id_key = NULL;
json_t *observation_id = NULL;
if(!json_is_object(jsensor)) {
traceEvent(TRACE_ERROR, "%s in not an object in config file.\n", ip_str);
return NULL;
}
json_t *observations_id = json_object_get(jsensor, observations_id_key);
if (!observations_id) {
traceEvent(TRACE_ERROR, "Sensor %s has not \"%s\" property in config file",
ip_str, observations_id_key);
return NULL;
}
if (!json_is_object(observations_id)) {
traceEvent(TRACE_ERROR, "\"%s\" property is not an object in sensor %s",
observations_id_key, ip_str);
return NULL;
}
if (0 == json_object_size(observations_id)) {
traceEvent(TRACE_ERROR, "No \"%s\" defined in sensor %s",
observations_id_key, ip_str);
return NULL;
}
struct sensor *sensor = calloc(1, sizeof(*sensor));
if (unlikely(NULL == sensor)) {
traceEvent(TRACE_ERROR,
"Can't allocate sensor of network %s memory (out of memory?)",
ip_str);
return NULL;
}
#ifdef SENSOR_MAGIC