656 lines
19 KiB
C
656 lines
19 KiB
C
/*
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**********************************************************************************************
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* File: maat_ip.c
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* Description:
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* Authors: Liu WenTan <liuwentan@geedgenetworks.com>
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* Date: 2022-10-31
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* Copyright: (c) Since 2022 Geedge Networks, Ltd. All rights reserved.
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***********************************************************************************************
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*/
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#include <stdint.h>
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#include <assert.h>
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#include "log/log.h"
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#include "maat_utils.h"
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#include "maat_ex_data.h"
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#include "ip_matcher.h"
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#include "maat_ip.h"
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#include "maat_core.h"
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#include "maat_rule.h"
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#include "alignment.h"
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#include "maat_garbage_collection.h"
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#define MODULE_IP module_name_str("maat.ip")
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struct ip_schema {
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int table_id;
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struct table_manager *ref_tbl_mgr;
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};
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struct ipv4_item_rule {
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uint32_t min_ip; /* 源地址下界；0表示忽略本字段 */
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uint32_t max_ip; /* 源地址上界；0表示固定IP=min_addr */
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};
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struct ipv6_item_rule {
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uint32_t min_ip[4]; /* 源地址下界；全0表示忽略本字段 */
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uint32_t max_ip[4]; /* 源地址上界；全0表示固定IP=min_addr */
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};
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struct ip_item {
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uuid_t item_uuid;
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uuid_t object_uuid;
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int addr_type;
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union {
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struct ipv4_item_rule ipv4;
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struct ipv6_item_rule ipv6;
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};
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int port_start;
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int port_end;
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};
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struct ip_runtime {
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struct ip_matcher *ip_matcher;
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struct rcu_hash_table *item_hash; // <item_id, struct ip_item>
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long long rule_num;
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long long ipv6_rule_num;
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size_t n_worker_thread;
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struct log_handle *logger;
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struct maat_garbage_bin *ref_garbage_bin;
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long long *scan_times;
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long long *scan_cpu_time;
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long long *hit_times;
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long long *hit_item_num;
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long long update_err_cnt;
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};
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void *ip_schema_new(cJSON *json, struct table_manager *tbl_mgr,
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const char *table_name, struct log_handle *logger)
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{
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struct ip_schema *ip_schema = ALLOC(struct ip_schema, 1);
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cJSON *item = cJSON_GetObjectItem(json, "table_id");
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if (item != NULL && item->type == cJSON_Number) {
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ip_schema->table_id = item->valueint;
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} else {
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log_fatal(logger, MODULE_IP,
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"[%s:%d] ip table:<%s> schema has no table_id column",
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__FUNCTION__, __LINE__, table_name);
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goto error;
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}
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ip_schema->ref_tbl_mgr = tbl_mgr;
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return ip_schema;
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error:
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FREE(ip_schema);
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return NULL;
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}
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void ip_schema_free(void *ip_schema)
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{
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FREE(ip_schema);
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}
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static struct ip_item *
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ip_item_new(struct ip_schema *ip_schema, const char *table_name,
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const cJSON *json, struct log_handle *logger, uuid_t item_uuid)
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{
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char ip_str[128] = {0};
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struct ip_item *ip_item = ALLOC(struct ip_item, 1);
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cJSON *tmp_obj = NULL;
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int ret = 0;
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uuid_copy(ip_item->item_uuid, item_uuid);
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tmp_obj = cJSON_GetObjectItem(json, "object_uuid");
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if (NULL == tmp_obj || tmp_obj->type != cJSON_String) {
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char *json_str = cJSON_Print(json);
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log_fatal(logger, MODULE_IP,
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"[%s:%d] ip table:<%s> has no object_id in line:%s",
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__FUNCTION__, __LINE__, table_name, json_str);
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FREE(json_str);
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goto error;
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}
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uuid_parse(tmp_obj->valuestring, ip_item->object_uuid);
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tmp_obj = cJSON_GetObjectItem(json, "ip");
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if (NULL == tmp_obj || tmp_obj->type != cJSON_String) {
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char *json_str = cJSON_Print(json);
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log_fatal(logger, MODULE_IP,
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"[%s:%d] ip table:<%s> has no ip in line:%s",
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__FUNCTION__, __LINE__, table_name, json_str);
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FREE(json_str);
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goto error;
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}
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memcpy(ip_str, tmp_obj->valuestring, strlen(tmp_obj->valuestring));
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if (strchr(ip_str, ':') != NULL) {
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ip_item->addr_type = IPV6;
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} else {
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ip_item->addr_type = IPV4;
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}
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if (IPv4 == ip_item->addr_type) {
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ret = ip_format2range(ip_str, ip_item->addr_type, &ip_item->ipv4.min_ip, &ip_item->ipv4.max_ip);
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if (ret < 0) {
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char *json_str = cJSON_Print(json);
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log_fatal(logger, MODULE_IP,
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"[%s:%d] ip table:<%s> ip_format2range(ip4) failed in line:%s",
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__FUNCTION__, __LINE__, table_name, json_str);
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FREE(json_str);
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goto error;
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}
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} else {
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//ipv6
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ret = ip_format2range(ip_str, ip_item->addr_type, ip_item->ipv6.min_ip, ip_item->ipv6.max_ip);
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if (ret < 0) {
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char *json_str = cJSON_Print(json);
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log_fatal(logger, MODULE_IP,
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"[%s:%d] ip table:<%s> ip_format2range(ip6) failed in line:%s",
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__FUNCTION__, __LINE__, table_name, json_str);
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FREE(json_str);
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goto error;
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}
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}
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tmp_obj = cJSON_GetObjectItem(json, "port");
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if(tmp_obj && tmp_obj->type == cJSON_String)
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{
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char port_range[20] = {0};
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memcpy(port_range, tmp_obj->valuestring, strlen(tmp_obj->valuestring));
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//port range is port or port_start-port_end
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if(strchr(port_range,'-')!=NULL){
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char *saveptr = NULL;
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char *port_start = strtok_r(port_range,"-", &saveptr);
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char *port_end = strtok_r(NULL,"-", &saveptr);
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ip_item->port_start = atoi(port_start);
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ip_item->port_end = atoi(port_end);
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} else {
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ip_item->port_start = atoi(port_range);
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ip_item->port_end = atoi(port_range);
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}
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} else {
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ip_item->port_start = 0;
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ip_item->port_end = 65535;
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}
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return ip_item;
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error:
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FREE(ip_item);
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return NULL;
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}
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static void ip_item_free(struct ip_item *item)
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{
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if (NULL == item) {
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return;
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}
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FREE(item);
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}
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static void ip_item_free_cb(void *user_ctx, void *data)
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{
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struct ip_item *item = (struct ip_item *)data;
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ip_item_free(item);
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}
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void *ip_runtime_new(void *ip_schema, size_t max_thread_num,
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struct maat_garbage_bin *garbage_bin,
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struct log_handle *logger)
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{
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if (NULL == ip_schema) {
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return NULL;
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}
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struct ip_runtime *ip_rt = ALLOC(struct ip_runtime, 1);
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ip_rt->item_hash = rcu_hash_new(ip_item_free_cb, NULL, 0);
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ip_rt->n_worker_thread = max_thread_num;
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ip_rt->ref_garbage_bin = garbage_bin;
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ip_rt->logger = logger;
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ip_rt->scan_times = alignment_int64_array_alloc(max_thread_num);
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ip_rt->scan_cpu_time = alignment_int64_array_alloc(max_thread_num);
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ip_rt->hit_times = alignment_int64_array_alloc(max_thread_num);
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ip_rt->hit_item_num = alignment_int64_array_alloc(max_thread_num);
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return ip_rt;
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}
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void ip_runtime_free(void *ip_runtime)
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{
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if (NULL == ip_runtime) {
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return;
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}
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struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
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if (ip_rt->ip_matcher != NULL) {
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ip_matcher_free(ip_rt->ip_matcher);
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ip_rt->ip_matcher = NULL;
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}
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if (ip_rt->item_hash != NULL) {
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rcu_hash_free(ip_rt->item_hash);
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ip_rt->item_hash = NULL;
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}
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if (ip_rt->scan_times != NULL) {
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alignment_int64_array_free(ip_rt->scan_times);
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ip_rt->scan_times = NULL;
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}
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if (ip_rt->scan_cpu_time != NULL) {
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alignment_int64_array_free(ip_rt->scan_cpu_time);
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ip_rt->scan_cpu_time = NULL;
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}
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if (ip_rt->hit_times != NULL) {
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alignment_int64_array_free(ip_rt->hit_times);
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ip_rt->hit_times = NULL;
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}
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if (ip_rt->hit_item_num != NULL) {
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alignment_int64_array_free(ip_rt->hit_item_num);
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ip_rt->hit_item_num = NULL;
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}
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FREE(ip_rt);
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}
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static void ip_item_to_ip_rule(struct ip_item *item, struct ip_rule *rule)
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{
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if (IPv4 == item->addr_type) {
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rule->type = IPv4;
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rule->ipv4_rule.start_ip = item->ipv4.min_ip;
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rule->ipv4_rule.end_ip = item->ipv4.max_ip;
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} else {
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rule->type = IPv6;
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memcpy(rule->ipv6_rule.start_ip, item->ipv6.min_ip,
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sizeof(item->ipv6.min_ip));
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memcpy(rule->ipv6_rule.end_ip, item->ipv6.max_ip,
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sizeof(item->ipv6.max_ip));
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}
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uuid_copy(rule->rule_uuid, item->item_uuid);
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}
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static int ip_runtime_update_row(struct ip_runtime *ip_rt, char *key, size_t key_len,
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struct ip_item *item, enum maat_operation op)
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{
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int ret = -1;
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if (MAAT_OP_DEL == op) {
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// delete
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rcu_hash_del(ip_rt->item_hash, key, key_len);
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} else {
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// add
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ret = rcu_hash_add(ip_rt->item_hash, key, key_len, (void *)item);
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if (ret < 0) {
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char uuid_str[37] = {0};
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uuid_unparse(item->item_uuid, uuid_str);
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log_debug(ip_rt->logger, MODULE_IP,
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"[%s:%d] ip item(item_id:%s) add to ip runtime htable failed",
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__FUNCTION__, __LINE__, uuid_str);
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return -1;
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}
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}
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return 0;
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}
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int ip_runtime_update(void *ip_runtime, void *ip_schema,
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const char *table_name, const char *line,
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enum maat_operation op)
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{
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if (NULL == ip_runtime || NULL == ip_schema || NULL == line) {
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return -1;
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}
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struct ip_schema *schema = (struct ip_schema *)ip_schema;
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struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
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cJSON *json = NULL;
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cJSON *tmp_obj = NULL;
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json = cJSON_Parse(line);
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if (NULL == json) {
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log_fatal(ip_rt->logger, MODULE_IP,
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"[%s:%d] ip table:<%s> line is not a valid json string",
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__FUNCTION__, __LINE__, table_name);
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ip_rt->update_err_cnt++;
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goto ERROR;
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}
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tmp_obj = cJSON_GetObjectItem(json, "uuid");
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if (NULL == tmp_obj || tmp_obj->type != cJSON_String) {
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char *json_str = cJSON_Print(json);
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log_fatal(ip_rt->logger, MODULE_IP,
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"[%s:%d] ip table:<%s> has no item_id in line:%s",
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__FUNCTION__, __LINE__, table_name, json_str);
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FREE(json_str);
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ip_rt->update_err_cnt++;
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goto ERROR;
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}
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uuid_t item_uuid;
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uuid_parse(tmp_obj->valuestring, item_uuid);
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struct ip_item *ip_item = NULL;
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if (MAAT_OP_ADD == op) {
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//add
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ip_item = ip_item_new(schema, table_name, json, ip_rt->logger, item_uuid);
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if (NULL == ip_item) {
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ip_rt->update_err_cnt++;
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goto ERROR;
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}
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}
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int ret = ip_runtime_update_row(ip_rt, (char *)&item_uuid, sizeof(uuid_t),
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ip_item, op);
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if (ret < 0) {
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if (ip_item != NULL) {
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ip_item_free(ip_item);
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}
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//don't return failed, ignore the case of adding duplicate keys
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}
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cJSON_Delete(json);
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return 0;
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ERROR:
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if (json != NULL) {
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cJSON_Delete(json);
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}
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return -1;
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}
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void garbage_ip_matcher_free(void *ip_matcher, void *arg)
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{
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struct ip_matcher *matcher = (struct ip_matcher *)ip_matcher;
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ip_matcher_free(matcher);
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}
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int ip_runtime_commit(void *ip_runtime, const char *table_name,
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long long maat_rt_version)
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{
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if (NULL == ip_runtime) {
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return -1;
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}
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struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
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int updating_flag = rcu_hash_is_updating(ip_rt->item_hash);
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if (0 == updating_flag) {
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return 0;
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}
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ip_rt->ipv6_rule_num = 0;
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struct ip_rule *rules = NULL;
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void **ex_data_array = NULL;
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size_t rule_cnt = rcu_updating_hash_list(ip_rt->item_hash, &ex_data_array);
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if (rule_cnt > 0) {
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rules = ALLOC(struct ip_rule, rule_cnt);
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for (size_t i = 0; i < rule_cnt; i++) {
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struct ip_item *item = (struct ip_item *)ex_data_array[i];
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if (item->addr_type == IPv6) {
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ip_rt->ipv6_rule_num++;
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}
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ip_item_to_ip_rule(item, &rules[i]);
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}
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}
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int ret = 0;
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size_t mem_used = 0;
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struct ip_matcher *new_ip_matcher = NULL;
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struct ip_matcher *old_ip_matcher = NULL;
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if (rule_cnt > 0) {
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struct timespec start, end;
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clock_gettime(CLOCK_MONOTONIC, &start);
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new_ip_matcher = ip_matcher_new(rules, rule_cnt, &mem_used);
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clock_gettime(CLOCK_MONOTONIC, &end);
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long long time_elapse_ms = (end.tv_sec - start.tv_sec) * 1000 +
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(end.tv_nsec - start.tv_nsec) / 1000000;
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if (NULL == new_ip_matcher) {
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log_fatal(ip_rt->logger, MODULE_IP,
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"[%s:%d] table[%s] rebuild ip_matcher engine failed "
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"when update %zu ip rules", __FUNCTION__, __LINE__,
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table_name, rule_cnt);
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ret = -1;
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} else {
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log_info(ip_rt->logger, MODULE_IP,
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"table[%s] commit %zu ip rules and rebuild ip_matcher completed"
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", version:%lld, consume:%lldms", table_name, rule_cnt,
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maat_rt_version, time_elapse_ms);
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}
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}
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old_ip_matcher = ip_rt->ip_matcher;
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ip_rt->ip_matcher = new_ip_matcher;
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rcu_hash_commit(ip_rt->item_hash);
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if (old_ip_matcher != NULL) {
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maat_garbage_bagging(ip_rt->ref_garbage_bin, old_ip_matcher, NULL,
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garbage_ip_matcher_free);
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}
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ip_rt->rule_num = rule_cnt;
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if (rules != NULL) {
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FREE(rules);
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}
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if (ex_data_array != NULL) {
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FREE(ex_data_array);
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}
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return ret;
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}
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long long ip_runtime_rule_count(void *ip_runtime)
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{
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if (NULL == ip_runtime) {
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return 0;
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}
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struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
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return ip_rt->rule_num;
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}
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long long ip_runtime_ipv6_rule_count(void *ip_runtime)
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{
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if (NULL == ip_runtime) {
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return 0;
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}
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struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
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return ip_rt->ipv6_rule_num;
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}
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int ip_runtime_scan(struct ip_runtime *ip_rt, int thread_id, int ip_type,
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uint8_t *ip_addr, int port, const char *field_name, struct maat_state *state)
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{
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if (0 == ip_rt->rule_num) {
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//empty ip table
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return 0;
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}
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if (NULL == ip_rt->ip_matcher) {
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return 0;
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}
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struct ip_data scan_data;
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struct scan_result ip_results[MAX_HIT_ITEM_NUM];
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if (ip_type == IPv4) {
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scan_data.type = IPv4;
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scan_data.ipv4 = ntohl(*(uint32_t *)ip_addr);
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} else {
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scan_data.type = IPv6;
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for (int i = 0; i < 4; i++) {
|
||
scan_data.ipv6[i] = *((uint32_t *)ip_addr + i);
|
||
}
|
||
ipv6_ntoh(scan_data.ipv6);
|
||
}
|
||
|
||
size_t real_hit_item_cnt = 0;
|
||
struct maat_item hit_maat_items[MAX_HIT_ITEM_NUM];
|
||
|
||
int n_hit_ip_item = ip_matcher_match(ip_rt->ip_matcher, &scan_data,
|
||
ip_results, MAX_HIT_ITEM_NUM);
|
||
if (n_hit_ip_item < 0) {
|
||
return -1;
|
||
}
|
||
|
||
if (0 == n_hit_ip_item) {
|
||
goto next;
|
||
}
|
||
|
||
for (size_t i = 0; i < n_hit_ip_item; i++) {
|
||
struct ip_item *ip_item = (struct ip_item *)rcu_hash_find(ip_rt->item_hash,
|
||
(char *)&ip_results[i].rule_uuid,
|
||
sizeof(uuid_t));
|
||
if (!ip_item) {
|
||
// item config has been deleted
|
||
continue;
|
||
}
|
||
|
||
if (port < 0 && ip_item->port_start != 0 && ip_item->port_end != 65535) {
|
||
//If port is not speicified, an IP should NOT match rules with port range.
|
||
continue;
|
||
}
|
||
|
||
if (port >= 0 && (port < ip_item->port_start || port > ip_item->port_end)) {
|
||
//If port is specified, the port should within the port range.
|
||
continue;
|
||
}
|
||
|
||
uuid_copy(hit_maat_items[real_hit_item_cnt].item_uuid, ip_item->item_uuid);
|
||
uuid_copy(hit_maat_items[real_hit_item_cnt].object_uuid, ip_item->object_uuid);
|
||
real_hit_item_cnt++;
|
||
}
|
||
|
||
if (real_hit_item_cnt > 0) {
|
||
alignment_int64_array_add(ip_rt->hit_item_num, state->thread_id,
|
||
real_hit_item_cnt);
|
||
}
|
||
next:
|
||
if (NULL == state->rule_compile_state) {
|
||
state->rule_compile_state = rule_compile_state_new();
|
||
alignment_int64_array_add(state->maat_inst->stat->rule_state_cnt,
|
||
state->thread_id, 1);
|
||
}
|
||
|
||
return rule_compile_state_update(state->rule_compile_state, state->maat_inst, field_name,
|
||
state->rule_table_id, state->Nth_scan,
|
||
hit_maat_items, real_hit_item_cnt);
|
||
}
|
||
|
||
void ip_runtime_perf_stat(struct ip_runtime *ip_rt, struct timespec *start,
|
||
struct timespec *end, int thread_id)
|
||
{
|
||
if (NULL == ip_rt || thread_id < 0) {
|
||
return;
|
||
}
|
||
|
||
if (start != NULL && end != NULL) {
|
||
long long consume_time = (end->tv_sec - start->tv_sec) * 1000000000 +
|
||
(end->tv_nsec - start->tv_nsec);
|
||
alignment_int64_array_add(ip_rt->scan_cpu_time, thread_id, consume_time);
|
||
}
|
||
}
|
||
|
||
void ip_runtime_scan_times_inc(struct ip_runtime *ip_rt, int thread_id)
|
||
{
|
||
if (NULL == ip_rt || thread_id < 0) {
|
||
return;
|
||
}
|
||
|
||
alignment_int64_array_add(ip_rt->scan_times, thread_id, 1);
|
||
}
|
||
|
||
long long ip_runtime_scan_times(void *ip_runtime)
|
||
{
|
||
if (NULL == ip_runtime) {
|
||
return 0;
|
||
}
|
||
|
||
struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
|
||
long long sum = alignment_int64_array_sum(ip_rt->scan_times,
|
||
ip_rt->n_worker_thread);
|
||
alignment_int64_array_reset(ip_rt->scan_times,
|
||
ip_rt->n_worker_thread);
|
||
|
||
return sum;
|
||
}
|
||
|
||
long long ip_runtime_scan_cpu_time(void *ip_runtime)
|
||
{
|
||
if (NULL == ip_runtime) {
|
||
return 0;
|
||
}
|
||
|
||
struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
|
||
long long sum = alignment_int64_array_sum(ip_rt->scan_cpu_time,
|
||
ip_rt->n_worker_thread);
|
||
alignment_int64_array_reset(ip_rt->scan_cpu_time, ip_rt->n_worker_thread);
|
||
|
||
return sum;
|
||
}
|
||
|
||
void ip_runtime_hit_times_inc(struct ip_runtime *ip_rt, int thread_id)
|
||
{
|
||
if (NULL == ip_rt || thread_id < 0) {
|
||
return;
|
||
}
|
||
|
||
alignment_int64_array_add(ip_rt->hit_times, thread_id, 1);
|
||
}
|
||
|
||
long long ip_runtime_hit_times(void *ip_runtime)
|
||
{
|
||
if (NULL == ip_runtime) {
|
||
return 0;
|
||
}
|
||
|
||
struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
|
||
long long sum = alignment_int64_array_sum(ip_rt->hit_times,
|
||
ip_rt->n_worker_thread);
|
||
alignment_int64_array_reset(ip_rt->hit_times,
|
||
ip_rt->n_worker_thread);
|
||
|
||
return sum;
|
||
}
|
||
|
||
long long ip_runtime_hit_item_num(void *ip_runtime)
|
||
{
|
||
if (NULL == ip_runtime) {
|
||
return 0;
|
||
}
|
||
|
||
struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
|
||
long long sum = alignment_int64_array_sum(ip_rt->hit_item_num,
|
||
ip_rt->n_worker_thread);
|
||
alignment_int64_array_reset(ip_rt->hit_item_num,
|
||
ip_rt->n_worker_thread);
|
||
|
||
return sum;
|
||
}
|
||
|
||
long long ip_runtime_update_err_count(void *ip_runtime)
|
||
{
|
||
if (NULL == ip_runtime) {
|
||
return 0;
|
||
}
|
||
|
||
struct ip_runtime *ip_rt = (struct ip_runtime *)ip_runtime;
|
||
return ip_rt->update_err_cnt;
|
||
}
|