/*
**********************************************************************************************
*	File: json2iris.h
*   Description: rule for transform json2iris
*	Authors: Liu WenTan <liuwentan@geedgenetworks.com>
*	Date:    2022-10-31
*   Copyright: (c) 2018-2022 Geedge Networks, Inc. All rights reserved.
***********************************************************************************************
*/

#include <linux/limits.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <errno.h>
#include <sys/stat.h>

#include "json2iris.h"
#include "cJSON/cJSON.h"
#include "maat_kv.h"
#include "maat_utils.h"
#include "maat_rule.h"
#include "uthash/uthash.h"

#define MODULE_JSON2IRIS  module_name_str("maat.json2iris")

#define	MAX_COLUMN_NUM	32
#define MAX_PATH_LINE 512

const int json_version = 1;
const char *untitled_group_name="Untitled";

enum maat_group_relation {
	PARENT_TYPE_COMPILE = 0,
	PARENT_TYPE_GROUP
};

struct group_info {
	int group_id;
	char group_name[NAME_MAX];
    UT_hash_handle hh;
};

struct iris_table {
	char table_name[NAME_MAX];
	char table_path[PATH_MAX];
	int line_count;
	enum table_type table_type;
	void *buff;
	size_t write_pos;
	size_t buff_sz;
    UT_hash_handle hh;
};

struct iris_description {
	int group_cnt;
	int region_cnt;
	
	char tmp_iris_dir[MAX_PATH_LINE];
	char tmp_iris_index_dir[MAX_PATH_LINE];
	char index_path[PATH_MAX];

	struct iris_table *group_table;
	struct iris_table *group2group_table;
	struct iris_table *group2compile_table;
	struct iris_table *compile_table;

	struct group_info *group_name_map;
	struct iris_table *iris_table_map;

	struct maat_kv_store *str2int_map;
	redisContext *redis_write_ctx;

	char *encrypt_key;
	char *encrypt_algo;
	FILE *idx_fp;
};

struct translate_command {
	const char *json_string;
	char *json_value;
	int json_type;
	int str2int_flag;
	int empty_allowed;
	const char *default_string;
	int default_int;
};

struct iris_table *query_table_info(struct iris_description *p_iris, 
                                    const char *table_name, 
                                    enum table_type table_type)
{
    if (NULL == p_iris || NULL == table_name || 
        table_type == TABLE_TYPE_INVALID) {
        return NULL;
    }

    struct iris_table *table_info = NULL;
    HASH_FIND(hh, p_iris->iris_table_map, table_name, strlen(table_name), table_info);
    if (NULL == table_info) {
        table_info = ALLOC(struct iris_table, 1);
        table_info->line_count = 0;
		table_info->table_type = table_type;
		memcpy(table_info->table_name, table_name, MIN(sizeof(table_info->table_name) - 1,
               strlen(table_name)));
		snprintf(table_info->table_path, sizeof(table_info->table_path), 
                 "%s/%s.local", p_iris->tmp_iris_dir, table_info->table_name);
        HASH_ADD_KEYPTR(hh, p_iris->iris_table_map, table_info->table_name, strlen(table_name), table_info);
    }

	return table_info;
}

void free_iris_table_info(void *p)
{
	struct iris_table *table = (struct iris_table *)p;
    if (table != NULL) {
        FREE(table->buff);
    }
    FREE(table);
}

int set_iris_descriptor(const char *json_file, cJSON *json,
                        const char *encrypt_key, const char *encrypt_algo, 
                        const char *compile_tn, const char *group2compile_tn,
                        const char* group2group_tn, redisContext *redis_write_ctx,
                        struct iris_description *iris_cfg)
{
	memset(iris_cfg, 0, sizeof(struct iris_description));
	snprintf(iris_cfg->tmp_iris_dir, sizeof(iris_cfg->tmp_iris_dir), "%s_iris_tmp", json_file);
	snprintf(iris_cfg->tmp_iris_index_dir, sizeof(iris_cfg->tmp_iris_index_dir), 
             "%s_iris_tmp/index", json_file);
	snprintf(iris_cfg->index_path, sizeof(iris_cfg->index_path), "%s/full_config_index.%010d",
             iris_cfg->tmp_iris_index_dir, json_version);

	iris_cfg->redis_write_ctx = redis_write_ctx;
	iris_cfg->str2int_map = maat_kv_store_new();
	
	maat_kv_register(iris_cfg->str2int_map, "yes", 1);
	maat_kv_register(iris_cfg->str2int_map, "no", 0);
	
    maat_kv_register(iris_cfg->str2int_map, "flag", TABLE_TYPE_FLAG);
    maat_kv_register(iris_cfg->str2int_map, "flag_plus", TABLE_TYPE_FLAG_PLUS);
	maat_kv_register(iris_cfg->str2int_map, "ip_plus", TABLE_TYPE_IP_PLUS);
	maat_kv_register(iris_cfg->str2int_map, "string", TABLE_TYPE_EXPR);
	maat_kv_register(iris_cfg->str2int_map, "expr", TABLE_TYPE_EXPR);
	maat_kv_register(iris_cfg->str2int_map, "expr_plus", TABLE_TYPE_EXPR_PLUS);
	maat_kv_register(iris_cfg->str2int_map, "intval", TABLE_TYPE_INTERVAL);
	maat_kv_register(iris_cfg->str2int_map, "interval", TABLE_TYPE_INTERVAL);
	maat_kv_register(iris_cfg->str2int_map, "intval_plus", TABLE_TYPE_INTERVAL_PLUS);
	maat_kv_register(iris_cfg->str2int_map, "interval_plus", TABLE_TYPE_INTERVAL_PLUS);
	
	maat_kv_register(iris_cfg->str2int_map, "ipv4", 4);
	maat_kv_register(iris_cfg->str2int_map, "ipv6", 6);

	maat_kv_register(iris_cfg->str2int_map, "double", 0);
	maat_kv_register(iris_cfg->str2int_map, "single", 1);

	maat_kv_register(iris_cfg->str2int_map, "none", 0);
	maat_kv_register(iris_cfg->str2int_map, "and", 1);
	maat_kv_register(iris_cfg->str2int_map, "regex", 2);
	maat_kv_register(iris_cfg->str2int_map, "offset", 3);

	maat_kv_register(iris_cfg->str2int_map, "sub", 0);
	maat_kv_register(iris_cfg->str2int_map, "right", 1);
	maat_kv_register(iris_cfg->str2int_map, "suffix", 1);
	maat_kv_register(iris_cfg->str2int_map, "left", 2);
	maat_kv_register(iris_cfg->str2int_map, "prefix", 2);
	maat_kv_register(iris_cfg->str2int_map, "complete", 3);
	maat_kv_register(iris_cfg->str2int_map, "exact", 3);

	maat_kv_register(iris_cfg->str2int_map, "uncase plain", 0);
	maat_kv_register(iris_cfg->str2int_map, "hexbin", 1);
	maat_kv_register(iris_cfg->str2int_map, "case plain", 2);

	iris_cfg->compile_table = query_table_info(iris_cfg, compile_tn, TABLE_TYPE_COMPILE);
	iris_cfg->group2compile_table = query_table_info(iris_cfg, group2compile_tn, TABLE_TYPE_GROUP2COMPILE);
	iris_cfg->group2group_table = query_table_info(iris_cfg, group2group_tn, TABLE_TYPE_GROUP2GROUP);
	
	if (encrypt_key && encrypt_algo) {
		iris_cfg->encrypt_key = maat_strdup(encrypt_key);
		iris_cfg->encrypt_algo = maat_strdup(encrypt_algo);
	}

	return 0;
}

void clear_iris_descriptor(struct iris_description *iris_cfg)
{
	if (iris_cfg->group_name_map != NULL) {
        struct group_info *node = NULL;
        struct group_info *tmp = NULL;
        HASH_ITER(hh, iris_cfg->group_name_map, node, tmp) {
            HASH_DELETE(hh, iris_cfg->group_name_map, node);
            FREE(node);
        }
	}

	if(iris_cfg->iris_table_map != NULL) {
        struct iris_table *node = NULL;
        struct iris_table *tmp = NULL;
        HASH_ITER(hh, iris_cfg->iris_table_map, node, tmp) {
            HASH_DELETE(hh, iris_cfg->iris_table_map, node);
            free_iris_table_info(node);
        }
	}

	maat_kv_store_free(iris_cfg->str2int_map);
	FREE(iris_cfg->encrypt_algo);
	FREE(iris_cfg->encrypt_key);
    
	return;
}

int create_tmp_dir(struct iris_description *p)
{
	if ((access(p->tmp_iris_dir,F_OK)) < 0) {
		if ((mkdir(p->tmp_iris_dir, 0777)) < 0) {
			return -1;
		}
	}

	if ((access(p->tmp_iris_index_dir,F_OK)) < 0) {
		if ((mkdir(p->tmp_iris_index_dir, 0777)) < 0) {
			return -1;
		}
	}

	return 0;
}

int write_plugin_line(cJSON *plug_table_json, int sequence,
                      struct iris_description *p_iris, 
                      struct log_handle *logger)
{
	cJSON *item = cJSON_GetObjectItem(plug_table_json, "table_name");
	if (NULL == item || item->type != cJSON_String) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] The %d plugin_table's table_name not defined or format error",
                  __FUNCTION__, __LINE__, sequence);
		return -1;
	}
	const char *table_name = item->valuestring;

	cJSON *table_content = cJSON_GetObjectItem(plug_table_json, "table_content");
	if (NULL == table_content || table_content->type != cJSON_Array) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] %d plugin_table's table_content not defined or format error",
                  __FUNCTION__, __LINE__, sequence);
		return -1;
	}
	int line_cnt = cJSON_GetArraySize(table_content);
    struct iris_table *table_info = query_table_info(p_iris, table_name, TABLE_TYPE_PLUGIN);

    cJSON *each_line = NULL;
	const char *line_content = NULL;
	for (int i = 0; i < line_cnt; i++) {
		each_line = cJSON_GetArrayItem(table_content, i);
		if (NULL == each_line || each_line->type != cJSON_String) {
			log_error(logger, MODULE_JSON2IRIS,
                      "[%s:%d] plugin_table %s's line %d format error", 
                      __FUNCTION__, __LINE__, table_info->table_name, i + 1);
			continue;
		}
        
		line_content = each_line->valuestring;
		table_info->write_pos += memcat(&(table_info->buff), table_info->write_pos, 
                                        &(table_info->buff_sz), line_content, strlen(line_content));
		table_info->write_pos += memcat(&(table_info->buff), table_info->write_pos, 
                                        &(table_info->buff_sz), "\n", 1);
		table_info->line_count++;
	}

	return 0;
}

static struct group_info *group_info_read(struct group_info *group_name_map,
                                          const char *group_name)
{
    struct group_info *node = NULL;
    HASH_FIND(hh, group_name_map, group_name, strlen(group_name), node);

    return node;
}

static int get_group_seq(struct iris_description *iris_cfg)
{
	redisReply *data_reply=NULL;
	int sequence = 0;

	if (NULL == iris_cfg->redis_write_ctx) {
		sequence = iris_cfg->group_cnt;
	} else {
		data_reply = maat_cmd_wrap_redis_command(iris_cfg->redis_write_ctx, 
                                                 "INCRBY %s 1", mr_group_id_var);
		sequence = (int)data_reply->integer - 1;
		freeReplyObject(data_reply);
		data_reply = NULL;
	}
	iris_cfg->group_cnt++;

	return sequence;
}

static struct group_info *group_info_add_unsafe(struct iris_description *p_iris,
                                                const char *group_name)
{
	static struct group_info untitled_group;
	struct group_info *group_info = NULL;

	if (0 == strncasecmp(group_name, untitled_group_name, strlen(untitled_group_name))) {
		group_info = &untitled_group;
		group_info->group_id = get_group_seq(p_iris);
	} else {
		group_info = ALLOC(struct group_info, 1);
		group_info->group_id = get_group_seq(p_iris);
		strncpy(group_info->group_name, group_name, sizeof(group_info->group_name));
        HASH_ADD_KEYPTR(hh, p_iris->group_name_map, group_info->group_name, strlen(group_name), group_info);
	}
	return group_info;
}

static int get_region_seq(struct iris_description *iris_cfg)
{
	int sequence = 0;

	if (NULL == iris_cfg->redis_write_ctx) {
		sequence = iris_cfg->region_cnt;
	} else {
		redisReply *data_reply = maat_cmd_wrap_redis_command(iris_cfg->redis_write_ctx, 
                                                            "INCRBY %s 1", mr_region_id_var);
		sequence = (int)data_reply->integer - 1;
		freeReplyObject(data_reply);
	}
	iris_cfg->region_cnt++;

	return sequence;
}

int direct_write_rule(cJSON *json, struct maat_kv_store *str2int, 
                      struct translate_command *cmd, int cmd_cnt, 
                      struct iris_table *table, struct log_handle *logger)
{
	int i = 0;
    int ret = -1;
	cJSON dummy;

	for (i = 0; i < cmd_cnt; i++) {
		cJSON *item = cJSON_GetObjectItem(json, cmd[i].json_string);
		if (NULL == item && (1 == cmd[i].empty_allowed)) {
			dummy.valuestring = (char *)cmd[i].default_string;
			dummy.valueint = cmd[i].default_int;
			dummy.valuedouble = cmd[i].default_int;
			dummy.type = cmd[i].json_type;
			item = &dummy;
		}

		if (NULL == item || item->type != cmd[i].json_type) {
			log_error(logger, MODULE_JSON2IRIS, 
                      "[%s:%d] %s not defined or wrong format", 
                      __FUNCTION__, __LINE__, cmd[i].json_string);
			ret = -1;
			goto error_out;
		}

		if (1 == cmd[i].str2int_flag) {
            long long int_value = 0;
			char *p = item->valuestring;
			ret = maat_kv_read(str2int, p, &int_value);			
			if (ret < 0) {
				log_error(logger, MODULE_JSON2IRIS, 
                          "[%s:%d] %s's value %s is not valid format", 
                          __FUNCTION__, __LINE__, cmd[i].json_string, p);
				FREE(p);
				ret = -1;
				goto error_out;
			}
			cmd[i].json_value = (char *)malloc(21);/* 2^64+1 can be represented in 21 chars. */
			snprintf(cmd[i].json_value, 21, "%d", (int)int_value);
		} else {
			switch (item->type) {
				case cJSON_Number:
					cmd[i].json_value = cJSON_Print(item);
					break;
				case cJSON_String:
					cmd[i].json_value = ALLOC(char, strlen(item->valuestring) + 1);
					memcpy(cmd[i].json_value, item->valuestring, strlen(item->valuestring));
					break;
				default://impossible ,already checked
					assert(0);
					break;
			}
		}
	}

	for (i = 0; i < cmd_cnt; i++) {
		table->write_pos += memcat(&(table->buff), table->write_pos, &table->buff_sz, 
                                   cmd[i].json_value, strlen(cmd[i].json_value));
		table->write_pos += memcat(&(table->buff), table->write_pos, &table->buff_sz, "\t", 1);
	}
	table->write_pos += memcat(&(table->buff), table->write_pos, &table->buff_sz, "\n", 1);
	table->line_count++;
	ret = 0;
error_out:	
	for (i = 0; i < cmd_cnt; i++) {
		if (cmd[i].json_value != NULL) {
			FREE(cmd[i].json_value);
		}
	}
	return ret;
}

int write_flag_line(cJSON *region_json, struct iris_description *p_iris, 
                    struct iris_table *table, struct log_handle *logger)
{
    struct translate_command json_cmd[MAX_COLUMN_NUM];
	int cmd_cnt = 0;
	memset(json_cmd, 0, sizeof(json_cmd));

	json_cmd[cmd_cnt].json_string = "region_id";
	json_cmd[cmd_cnt].json_type=cJSON_Number;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "group_id";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
    if (table->table_type==TABLE_TYPE_FLAG_PLUS) {
		json_cmd[cmd_cnt].json_string = "district";
		json_cmd[cmd_cnt].json_type = cJSON_String;
		cmd_cnt++;
	}

	json_cmd[cmd_cnt].json_string = "flag";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

    json_cmd[cmd_cnt].json_string = "flag_mask";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "is_valid";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	return direct_write_rule(region_json, p_iris->str2int_map, 
                             json_cmd, cmd_cnt, table, logger);
}

int write_expr_line(cJSON *region_json, struct iris_description *p_iris,
                    struct iris_table *table, struct log_handle *logger)
{
	struct translate_command json_cmd[MAX_COLUMN_NUM];
	int cmd_cnt = 0;
	memset(json_cmd, 0, sizeof(json_cmd));

	json_cmd[cmd_cnt].json_string = "region_id";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "group_id";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	if (table->table_type==TABLE_TYPE_EXPR_PLUS) {
		json_cmd[cmd_cnt].json_string = "district";
		json_cmd[cmd_cnt].json_type = cJSON_String;
		cmd_cnt++;
	}

	json_cmd[cmd_cnt].json_string = "keywords";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "expr_type";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].str2int_flag = 1;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "match_method";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].str2int_flag = 1;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "format";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].str2int_flag = 1;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "is_valid";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	return direct_write_rule(region_json, p_iris->str2int_map, 
                             json_cmd, cmd_cnt, table, logger);
}

int write_ip_plus_line(cJSON *region_json, struct iris_description *p_iris,
                       struct iris_table *table, struct log_handle *logger)
{
	struct translate_command json_cmd[MAX_COLUMN_NUM];
	int cmd_cnt = 0;
	memset(json_cmd, 0, sizeof(json_cmd));

	json_cmd[cmd_cnt].json_string = "region_id";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "group_id";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	json_cmd[cmd_cnt].json_string = "addr_type";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].str2int_flag = 1;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "addr_format";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].empty_allowed = 1;
	json_cmd[cmd_cnt].default_string = "mask";	
	cmd_cnt++;	

	json_cmd[cmd_cnt].json_string = "ip1";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].empty_allowed = 1;
	json_cmd[cmd_cnt].default_string = "0.0.0.0";
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "ip2";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].empty_allowed = 1;
	json_cmd[cmd_cnt].default_string = "255.255.255.255";
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "port_format";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].empty_allowed = 1;
	json_cmd[cmd_cnt].default_string = "mask";	
	cmd_cnt++;	

	json_cmd[cmd_cnt].json_string = "port1";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].empty_allowed = 1;
	json_cmd[cmd_cnt].default_string = "0";
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "port2";
	json_cmd[cmd_cnt].json_type = cJSON_String;
	json_cmd[cmd_cnt].empty_allowed = 1;
	json_cmd[cmd_cnt].default_string = "65535";
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "protocol";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	json_cmd[cmd_cnt].empty_allowed = 1;
	json_cmd[cmd_cnt].default_int = 0;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "is_valid";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	return direct_write_rule(region_json, p_iris->str2int_map,
                             json_cmd, cmd_cnt, table, logger);
}

int write_intval_line(cJSON *region_json, struct iris_description *p_iris,
                      struct iris_table *table, struct log_handle *logger)
{
	struct translate_command json_cmd[MAX_COLUMN_NUM];
	int cmd_cnt = 0;
	memset(json_cmd, 0, sizeof(json_cmd));
	
	json_cmd[cmd_cnt].json_string = "region_id";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "group_id";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	if (table->table_type == TABLE_TYPE_INTERVAL_PLUS) {
		json_cmd[cmd_cnt].json_string = "district";
		json_cmd[cmd_cnt].json_type = cJSON_String;
		cmd_cnt++;
	}
		
	json_cmd[cmd_cnt].json_string = "low_boundary";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "up_boundary";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	json_cmd[cmd_cnt].json_string = "is_valid";
	json_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	return direct_write_rule(region_json, p_iris->str2int_map,
                             json_cmd, cmd_cnt, table, logger);
}

int write_region_rule(cJSON *region_json, int compile_id, int group_id,
                      struct iris_description *p_iris, struct log_handle *logger)
{
    cJSON *item = cJSON_GetObjectItem(region_json, "table_name");
	if (NULL == item || item->type != cJSON_String) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] compile rule %d's table_name not defined or format error", 
                  __FUNCTION__, __LINE__, compile_id);
		return -1;
	}
    const char *table_name = item->valuestring;

	item = cJSON_GetObjectItem(region_json, "table_type");
	if (NULL == item || item->type != cJSON_String) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] compile rule %d's table name %s's table_type not defined or format error",
                  __FUNCTION__, __LINE__, compile_id, table_name);
		return -1;
	}

	const char *table_type_str = item->valuestring;
    enum table_type table_type = TABLE_TYPE_EXPR;
	int ret = maat_kv_read(p_iris->str2int_map, table_type_str, (long long *)&(table_type));
	if (ret != 1) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] compile rule %d table name %s's table_type %s invalid",
                  __FUNCTION__, __LINE__, compile_id, table_name, table_type_str);
		return -1;
	}
	
	cJSON *table_content = cJSON_GetObjectItem(region_json, "table_content");
	if (NULL == table_content || table_content->type != cJSON_Object) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] compile rule %d table name %s's table_content not defined or format error",
                  __FUNCTION__, __LINE__, compile_id, table_name);
		return -1;
	}

	int region_id = get_region_seq(p_iris);
	cJSON_AddNumberToObject(table_content, "region_id", region_id);
	cJSON_AddNumberToObject(table_content, "group_id", group_id);
	cJSON_AddNumberToObject(table_content, "is_valid", 1);

    struct iris_table *table_info = query_table_info(p_iris, table_name, table_type);
	switch(table_type)
	{
        case TABLE_TYPE_FLAG:
        case TABLE_TYPE_FLAG_PLUS:
            ret = write_flag_line(table_content, p_iris, table_info, logger);
            break;
		case TABLE_TYPE_EXPR:
		case TABLE_TYPE_EXPR_PLUS:
			ret = write_expr_line(table_content, p_iris, table_info, logger);
			break;
		case TABLE_TYPE_IP_PLUS:
			ret = write_ip_plus_line(table_content, p_iris, table_info, logger);
			break;
		case TABLE_TYPE_INTERVAL:
		case TABLE_TYPE_INTERVAL_PLUS:
			ret = write_intval_line(table_content, p_iris, table_info, logger);
			break;
		default:
			assert(0);
			break;
	}
	return ret;
}

int write_group2compile_line(int group_id, int compile_id, int group_not_flag, 
                             int clause_index, const char *vtable, 
                             struct iris_description *p_iris,
                             struct iris_table *g2c_table)
{
	char buff[4096] = {0};
    struct iris_table *table = NULL;
    
    if (g2c_table != NULL) {
        table = g2c_table;
    } else {
        if (NULL == p_iris->group2compile_table) {
            return -1;
        }
        table = p_iris->group2compile_table;
    }

	snprintf(buff, sizeof(buff), "%d\t%d\t1\t%d\t%s\t%d\n", group_id, compile_id, 
             group_not_flag, vtable, clause_index);
	table->write_pos += memcat(&(table->buff), table->write_pos, &(table->buff_sz), 
                               buff, strlen(buff));
	table->line_count++;

	return 0;
}

int write_group2group_line(int group_id, int super_group_id,
                           struct iris_description *p_iris)
{
	char buff[4096] = {0};
	struct iris_table *table = p_iris->group2group_table;
    if (NULL == table) {
        return -1;
    }

	snprintf(buff, sizeof(buff), "%d\t%d\t1\n", group_id, 
            super_group_id);
	table->write_pos += memcat(&(table->buff), table->write_pos, 
                               &(table->buff_sz), buff, strlen(buff));
	table->line_count++;

	return 0;
}

int write_group_rule(cJSON *group_json, int parent_id, 
                     int parent_type, int tracking_compile_id, 
                     int Nth_group, struct iris_description *p_iris, 
                     struct log_handle *logger)
{
    int ret = 0;
    int group_not_flag = 0;
    int clause_index = 0;
	const char *str_parent_type[2] = {"compile", "group"};
	const char *group_name = NULL;
    const char *virtual_table = NULL;
    struct iris_table *g2c_table = NULL;

	cJSON *item = cJSON_GetObjectItem(group_json, "group_name");
	if (NULL == item || item->type != cJSON_String) {
		group_name = untitled_group_name;
	} else {
		group_name = item->valuestring;
	}

	if (parent_type == PARENT_TYPE_COMPILE) {
		item = cJSON_GetObjectItem(group_json, "virtual_table");
		if (NULL == item || item->type != cJSON_String) {
			virtual_table = "null";
		} else {
			virtual_table = item->valuestring;
		}

		item = cJSON_GetObjectItem(group_json, "not_flag");
		if (NULL == item || item->type != cJSON_Number) {
			group_not_flag = 0;
		} else {
			group_not_flag = item->valueint;
		}

		item = cJSON_GetObjectItem(group_json, "clause_index");
		if (NULL == item || item->type != cJSON_Number) {
			clause_index = Nth_group;
		} else {
			clause_index = item->valueint;
		}

        item = cJSON_GetObjectItem(group_json, "g2c_table_name");
        if (item != NULL && item->type == cJSON_String) {
            g2c_table = query_table_info(p_iris, item->valuestring, 
                                         TABLE_TYPE_GROUP2COMPILE);
        }
	} else {
		group_not_flag = 0;
	}

	struct group_info *group_info = group_info_read(p_iris->group_name_map, group_name);
    //exist group name, regions and sub groups will be ommit.
	if (NULL == group_info) {
		group_info = group_info_add_unsafe(p_iris, group_name);
		cJSON *region_json = cJSON_GetObjectItem(group_json, "regions");
		if (region_json != NULL) {
            cJSON *region_rule = NULL;
			cJSON_ArrayForEach(region_rule, region_json) {
				ret = write_region_rule(region_rule, tracking_compile_id, group_info->group_id, 
                                        p_iris, logger);
				if (ret < 0) {
					log_error(logger, MODULE_JSON2IRIS, 
                              "[%s:%d] compile rule %d write region error", 
                              __FUNCTION__, __LINE__, tracking_compile_id);
					return -1;
				}
			}
		}
		
        cJSON *sub_groups = cJSON_GetObjectItem(group_json, "sub_groups");
		if (sub_groups != NULL) {
			//recursively
			int i = 0;
			cJSON_ArrayForEach(item, sub_groups) {
				i++;
				ret = write_group_rule(item, group_info->group_id, PARENT_TYPE_GROUP, 
                                       tracking_compile_id, i, p_iris, logger);
				if (ret < 0) {
					return -1;
				}
			}
		}

		if (NULL == region_json && NULL == sub_groups) {
			log_info(logger, MODULE_JSON2IRIS, 
                     "[%s:%d] A group of compile rule %d has neither regions, sub groups, nor refered another exisited group", 
                     __FUNCTION__, __LINE__, tracking_compile_id);
		}
	}

	if (parent_type == PARENT_TYPE_COMPILE) {
		ret = write_group2compile_line(group_info->group_id, parent_id, group_not_flag,
                                       clause_index, virtual_table, p_iris, g2c_table);
	} else {
		ret = write_group2group_line(group_info->group_id, parent_id, p_iris);
	}

	if (ret < 0) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] %s rule %d write group error", 
                  __FUNCTION__, __LINE__, str_parent_type[parent_type], parent_id);
		return -1;
	}

	return 0;
}

int write_compile_line(cJSON *compile, struct iris_description *p_iris,
                       struct log_handle *logger)
{
	cJSON *item=cJSON_GetObjectItem(compile, "compile_id");
	if (item->type != cJSON_Number) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] compile_id format not number", __FUNCTION__, __LINE__);
		return -1;
	}
	int compile_id = item->valueint;

    cJSON *group_array = cJSON_GetObjectItem(compile, "groups");
    int group_num = cJSON_GetArraySize(group_array);
    int *clause_ids = ALLOC(int, group_num);
    int clause_num = 0;
    cJSON *group_obj = NULL;

	cJSON_ArrayForEach(group_obj, group_array) {
		item = cJSON_GetObjectItem(group_obj, "clause_index");
		if (item) {
            int i = 0;
			int clause_index = item->valueint;
			for (i = 0; i < clause_num; i++) {
				if (clause_ids[i] == clause_index) {
					break;
				}
			}

			if (i == clause_num) {
				clause_ids[clause_num] = clause_index;
				clause_num++;
			}			
		}
	}
	FREE(clause_ids);
	
	if (clause_num == 0) {
		clause_num = group_num;
	}

	cJSON_AddNumberToObject(compile, "clause_num", clause_num);

	struct translate_command compile_cmd[MAX_COLUMN_NUM];
	memset(compile_cmd, 0, sizeof(compile_cmd));

    int cmd_cnt = 0;
	compile_cmd[cmd_cnt].json_string = "compile_id";
	compile_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	compile_cmd[cmd_cnt].json_string = "service";
	compile_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	compile_cmd[cmd_cnt].json_string = "action";
	compile_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;
	
	compile_cmd[cmd_cnt].json_string = "do_blacklist";
	compile_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

	compile_cmd[cmd_cnt].json_string = "do_log";
	compile_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;


	compile_cmd[cmd_cnt].json_string = "tags";
	compile_cmd[cmd_cnt].json_type = cJSON_String;
	compile_cmd[cmd_cnt].empty_allowed = 1;
	compile_cmd[cmd_cnt].default_string = "0";
	cmd_cnt++;
	
	compile_cmd[cmd_cnt].json_string = "user_region";
	compile_cmd[cmd_cnt].json_type = cJSON_String;
	cmd_cnt++;
	
	compile_cmd[cmd_cnt].json_string = "is_valid";
	compile_cmd[cmd_cnt].json_type = cJSON_String;
	compile_cmd[cmd_cnt].str2int_flag = 1;
	cmd_cnt++;
	
	compile_cmd[cmd_cnt].json_string = "clause_num";
	compile_cmd[cmd_cnt].json_type = cJSON_Number;
	cmd_cnt++;

    struct iris_table *table_info = NULL;
	item = cJSON_GetObjectItem(compile,"compile_table_name");
	if (NULL == item || item->type != cJSON_String) {
        if (NULL == p_iris->compile_table) {
            return -1;
        }
		table_info = p_iris->compile_table;
	} else {
		table_info = query_table_info(p_iris, item->valuestring, TABLE_TYPE_COMPILE);
	}
	
	int ret = direct_write_rule(compile, p_iris->str2int_map, compile_cmd, cmd_cnt, 
                                table_info, logger);
	if (ret < 0) {
		return -1;
	}

	return compile_id;
}

void write_table_idx(struct iris_description *p_iris, struct iris_table *table)
{
	char line_cnt_str[32] = {0};
    char err_str[256] = {0};

	snprintf(line_cnt_str, sizeof(line_cnt_str), "%010d\n", table->line_count);

	size_t table_file_sz = strlen(line_cnt_str) + table->write_pos;
    unsigned char *buff = ALLOC(unsigned char, table_file_sz);
	memcpy(buff, line_cnt_str, strlen(line_cnt_str));
	memcpy(buff + strlen(line_cnt_str), table->buff, table->write_pos);

    UNUSED int ret = 0;
	FILE *table_fp = fopen(table->table_path, "w");
	if (p_iris->encrypt_key) {
        unsigned char *encrypt_buff = NULL;
        size_t encrypt_buff_sz = 0;
		ret = crypt_memory(buff, table_file_sz, &encrypt_buff, 
                                &encrypt_buff_sz, p_iris->encrypt_key, 
                                p_iris->encrypt_algo, 1, err_str, sizeof(err_str));
		assert(ret == 0);
		fwrite(encrypt_buff, encrypt_buff_sz, 1, table_fp);
		fprintf(p_iris->idx_fp, "%s\t%d\t%s\t%s\n", table->table_name, table->line_count, 
                table->table_path, p_iris->encrypt_algo);
		FREE(encrypt_buff);
	} else {
		fwrite(buff, table_file_sz, 1, table_fp);		
		fprintf(p_iris->idx_fp, "%s\t%d\t%s\n", table->table_name, table->line_count, 
                table->table_path);
	}

	fclose(table_fp);
	FREE(buff);
}

int write_index_file(struct iris_description *p_iris, struct log_handle *logger)
{
	p_iris->idx_fp = fopen(p_iris->index_path, "w");
	if (NULL == p_iris->idx_fp) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] index file %s fopen error %s",
                  __FUNCTION__, __LINE__, p_iris->index_path, strerror(errno));
		return -1;
	}

    struct iris_table *node = NULL;
    struct iris_table *tmp = NULL;
    HASH_ITER(hh, p_iris->iris_table_map, node, tmp) {
        write_table_idx(p_iris, node);
    }
    
	fclose(p_iris->idx_fp);
	p_iris->idx_fp = NULL;

	return 0;
}

int write_iris(cJSON *json, struct iris_description *p_iris, 
               struct log_handle *logger)
{
	int i=0;
	int ret=0;
	static struct group_info *parent_group = NULL; //TODO
	
	cJSON *plug_tables = cJSON_GetObjectItem(json, "plugin_table");
	if (plug_tables != NULL) {
        cJSON *each_plug_table = NULL;
		cJSON_ArrayForEach(each_plug_table, plug_tables) {
			write_plugin_line(each_plug_table, i, p_iris, logger);
			i++;
		}
	}

	cJSON *group_array = cJSON_GetObjectItem(json, "groups");//sub-group to group
	if (group_array != NULL) {
        cJSON *group_obj = NULL;
		cJSON_ArrayForEach(group_obj, group_array) {
            const char *parent_group_name = NULL;
			cJSON *item = cJSON_GetObjectItem(group_obj, "parent_group");
			if (NULL == item || item->type!=cJSON_String) {
				parent_group_name = untitled_group_name;
			} else {
				parent_group_name = item->string;
			}

			parent_group = group_info_read(p_iris->group_name_map, parent_group_name);
			if(NULL == parent_group) {
				parent_group = group_info_add_unsafe(p_iris, parent_group_name);
			}

			ret = write_group_rule(group_obj, parent_group->group_id, PARENT_TYPE_GROUP, 
                                   0, 0, p_iris, logger);
			if (ret < 0) {
				return -1;
			}
		}
	}

	int compile_cnt = 0;
	cJSON *compile_array = cJSON_GetObjectItem(json, "rules");
	if (compile_array != NULL) {
		compile_cnt = cJSON_GetArraySize(compile_array);
	}

	if (compile_cnt > 0) {
        cJSON *compile_obj = NULL;
		cJSON_ArrayForEach(compile_obj, compile_array) {
			int compile_id = write_compile_line(compile_obj, p_iris, logger);
			if (compile_id < 0) {
				log_error(logger, MODULE_JSON2IRIS, "[%s:%d] In %d compile rule", 
                          __FUNCTION__, __LINE__, i);
				return -1;
			}

			group_array = cJSON_GetObjectItem(compile_obj, "groups");
			if (NULL == group_array) {
				log_error(logger, MODULE_JSON2IRIS, 
                          "[%s:%d] compile rule %d have no group", 
                          __FUNCTION__, __LINE__, compile_id);
				return -1;
			}

			int group_cnt = cJSON_GetArraySize(group_array);
			if (group_cnt <= 0) {
				log_error(logger, MODULE_JSON2IRIS, 
                          "[%s:%d] compile rule %d have no groups", 
                          __FUNCTION__, __LINE__, compile_id);
				return -1;
			}

			i = 0;
            cJSON *group_obj = NULL;
			cJSON_ArrayForEach(group_obj, group_array) {
				ret = write_group_rule(group_obj, compile_id, PARENT_TYPE_COMPILE, 
                                       compile_id, i, p_iris, logger);
				if (ret < 0) {
					return -1;
				}
				i++;
			}
		}
	}

	ret = write_index_file(p_iris, logger);
	if (ret < 0) {
		return -1;
	}
	return 0;
}

int json2iris(const char *json_buff, const char *json_filename,
              redisContext *redis_write_ctx, char *iris_dir_buf, 
              int buf_len, char *encrypt_key, char *encrypt_algo,
              struct log_handle *logger)
{
    int ret = -1;
    cJSON *tmp_obj = NULL;
    const char *compile_tbl_name = NULL;
    const char *group2compile_tbl_name = NULL;
    const char *group2group_tbl_name = NULL;
	struct iris_description iris_cfg;

	memset(&iris_cfg, 0, sizeof(iris_cfg));

	cJSON *json = cJSON_Parse(json_buff);
	if (!json) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] error message: %-200.200s", 
                  __FUNCTION__, __LINE__, cJSON_GetErrorPtr());
		goto error_out;
	}

	tmp_obj = cJSON_GetObjectItem(json, "compile_table");
	if (tmp_obj) {
		compile_tbl_name = tmp_obj->valuestring;
	}

	tmp_obj = cJSON_GetObjectItem(json, "group2compile_table");
	if (tmp_obj) {
		group2compile_tbl_name = tmp_obj->valuestring;
	}

	tmp_obj = cJSON_GetObjectItem(json, "group2group_table");
	if (tmp_obj) {
		group2group_tbl_name = tmp_obj->valuestring;
	}

	ret = set_iris_descriptor(json_filename, json, encrypt_key, encrypt_algo, 
                              compile_tbl_name, group2compile_tbl_name, 
                              group2group_tbl_name, redis_write_ctx, &iris_cfg);
	if (ret < 0) {
		goto error_out;
	}

	ret = create_tmp_dir(&iris_cfg);
	if (ret < 0) {
		log_error(logger, MODULE_JSON2IRIS, 
                  "[%s:%d] create tmp folder %s error", 
                  __FUNCTION__, __LINE__, iris_cfg.tmp_iris_dir);
		goto error_out;
	}

	ret = write_iris(json, &iris_cfg, logger);
	if (ret < 0) {
		goto error_out;
	}
	memcpy(iris_dir_buf, iris_cfg.tmp_iris_index_dir, 
           MIN(strlen(iris_cfg.tmp_iris_index_dir) + 1, (unsigned int)buf_len));

	cJSON_Delete(json);
	clear_iris_descriptor(&iris_cfg);
	return 0;	

error_out:
	cJSON_Delete(json);
	clear_iris_descriptor(&iris_cfg);
	return -1;
}