#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sasl/sasl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/in.h>
#include <string.h>

#define SAMPLE_SEC_BUF_SIZE (2048)

char buf[SAMPLE_SEC_BUF_SIZE];

static sasl_conn_t *conn = NULL;
char *realm = "DOMAIN.COM";
char *mech = "gssapi";
char *iplocal = "127.0.0.1";
char *ipremote = "127.0.0.1";
char *searchpath = NULL;
char *service = "zeekling";
int cfd;

int init_sasl() {
	int result = sasl_client_init(NULL);
    if (result != SASL_OK) {
		printf("Initializing libsasl");
		return -1;
	}
	return 0;
}

int connect_server() {
	struct sockaddr_in s_add,c_add;
	unsigned short portnum=2345;
	printf("Hello,welcome to client !\r\n");
	cfd = socket(AF_INET, SOCK_STREAM, 0);
	if(-1 == cfd) {
	    printf("socket fail ! \r\n");
	    return 1;
	}
	printf("socket ok !\r\n");
	bzero(&s_add,sizeof(struct sockaddr_in));
	s_add.sin_family=AF_INET;
	s_add.sin_addr.s_addr= inet_addr("127.0.0.1");
	s_add.sin_port=htons(portnum);

	if(-1 == connect(cfd,(struct sockaddr *)(&s_add), sizeof(struct sockaddr))) {
	    printf("connect fail !\r\n");
		return 1;
	}
	printf("connect ok !\r\n");
	return 0;
}

int auth_sever() {

	return 0;
}

int main() {
    int result;
	const char *data;
    const char *chosenmech;
	int serverlast = 0;
	unsigned len;
	char *fqdn = "";
	char *userid = NULL;
	char *authid = NULL;

	int recbytes;
	int sin_size;
	char buffer[1024]={0};

	if (connect_server() != 0)
	{
		return 1;
	}

	if (init_sasl() != 0) {
		return 1;
	}

	if(-1 == (recbytes = read(cfd, buffer, 1024))) {
	    printf("read data fail !\r\n");
		return -1;
	}

	if (strcmp(buffer, "need_auth") == 0 && auth_sever() != 0) {
		printf("auth failed");
		return -1;
	}
	printf("auth ok\r\nREC:\r\n");

	buffer[recbytes]='\0';
	printf("%s\r\n",buffer);

	getchar();
	close(cfd);

	if (init_sasl() != 0) {
		return 1;
	}
	return 0;
}