#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <arpa/inet.h>

extern "C" {
#include "stellar/stellar.h"
#include "stellar/session.h"
#include "stellar/stellar_mq.h"
#include "stellar/stellar_exdata.h"
}

#include "cJSON.h"
#include "socks_decoder.h"

extern "C" int commit_test_result_json(cJSON *node, const char *name);
#define unused(x) ((void)(x))


int g_test_socks_decoder_plugin_id = 0;
int g_socks_message_topic_id = 0;

void *ctx_new(struct session *session, void *plugin_env)
{
	unused(plugin_env);
	unused(session);

	cJSON *root = cJSON_CreateObject();
	return (void *)root;
}

void ctx_free(struct session *sess, void *session_ctx, void *plugin_env)
{
	unused(sess);
	unused(plugin_env);
	
	commit_test_result_json((cJSON *)session_ctx, "socks_decoder_test");
}

static void append_json(cJSON *root, struct socks_info *info)
{
    cJSON *json_stream = cJSON_CreateObject();

    cJSON_AddStringToObject(json_stream, "version", info->version == SOCKS_VERSION_4 ? "SOCKS4" : "SOCKS5");

    char ip_str[INET6_ADDRSTRLEN] = {0};
    if (info->dst_addr.type == SOCKS_ADDR_IPV4) {
        inet_ntop(AF_INET, &info->dst_addr.ipv4, ip_str, INET_ADDRSTRLEN);
    } else if (info->dst_addr.type == SOCKS_ADDR_IPV6) {
        inet_ntop(AF_INET6, info->dst_addr.ipv6, ip_str, INET6_ADDRSTRLEN);
    } else {
        memcpy(ip_str, info->dst_addr.fqdn.iov_base, info->dst_addr.fqdn.iov_len);
    }
    cJSON_AddStringToObject(json_stream, "dst_addr", ip_str);
    cJSON_AddNumberToObject(json_stream, "dst_port", ntohs(info->dst_addr.port));
    cJSON_AddStringToObject(json_stream, "user_name", (char *)info->user_name.iov_base);
    cJSON_AddStringToObject(json_stream, "password", (char *)info->password.iov_base);

    cJSON_AddItemToObject(root, "socks_info", json_stream);
}

void test_socks_decoder_on_message(struct session *session, int topic_id, const void *msg, void *per_session_ctx, void *plugin_env)
{
    unused(plugin_env);
	unused(session);
	unused(topic_id);

    struct socks_info *info = (struct socks_info *)msg;
    cJSON *json_root = (cJSON *)per_session_ctx;

    append_json(json_root, info);
}

extern "C" void *SOCKS_DECODER_TEST_PLUG_INIT(struct stellar *st)
{
    g_test_socks_decoder_plugin_id = stellar_session_plugin_register(st, ctx_new, ctx_free, NULL);
    g_socks_message_topic_id = stellar_mq_get_topic_id(st, SOCKS_MESSAGE_TOPIC);

    stellar_session_mq_subscribe(st, g_socks_message_topic_id, test_socks_decoder_on_message, g_test_socks_decoder_plugin_id);


    return NULL;
}

extern "C" void SOCKS_DECODER_TEST_PLUG_DESTROY(void *plugin_env)
{
    unused(plugin_env);
}