int main()
{
int pipe_fd;
int res;
int open_mode = O_WRONLY;
int byte_send = 0;
char buffer[BUFFER_SIZE + 1];
if(access(FIFO_NAME,F_OK) == -1)
{
res = mkfifo(FIFO_NAME,0777);
if(res != 0)
{
exit(EXIT_FAILURE);
}
}
pipe_fd = open(FIFO_NAME,open_mode);
if(-1 != pipe_fd)
{
while(byte_send < TEN_MEG)
{
res = wirte(pipe_fd,buffer,BUFFER_SIZE);
byte_send +=res;
}
(void)close(pipe_fd);
}
else
{
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
}
ssize_t writen(int fd, const void* vptr, size_t n)
{
size_t nleft;
ssize_t nwritten;
const char* ptr;
ptr = vptr;
nleft = n;
while(nleft > 0) {
if (nwritten == wirte(fd, ptr, nleft) <= 0) {
if(errno == EINTR) {
nwritten = 0;
} else {
return (-1);
}
}
nleft -= wirtten;
ptr += nwirtten;
}
}
//서버실행 gcc -o test test.c -I/usr/include/mysql -L/usr/lib/mysql -lmysqlclient
void run_server(){
int count = 0;
int server_sockfd, client_sockfd;
int server_len, client_len;
char n;
struct sockaddr_un server_address;
struct sockaddr_un client_address;
//remove existing socket and create new non-name sockets
unlink("server_socket");
server_sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
//naming socket
server_address.sun_family = AF_UNIX;
strcpy(server_address.sun_path, "server_socket");
server_len = sizeof(server_address);
bind(server_sockfd, (struct sockaddr *)&server_address, server_len);
//bind함수는 소켓에 IP주소와 포트번호를 지정해줘서 소켓통신을 할 수 있도록 준비해줌!!
while (1){
char ch;
int val;
//connecting accept
client_len = sizeof(client_address);
client_sockfd = accept(server_sockfd, (struct sockaddr *)&client_address, &client_len);
//waiting client
listen(server_sockfd, 5);
printf("서버 구동중...\n");
char str[15];
read(client_sockfd, &str, 50);
printf("%s", str);
read(client_sockfd, &ch, 1);
val = (int)ch - 48; //아스키코드 48빼서 숫자로 형변환
switch(val){
case 1:{
query_stat = mysql_query(connection, "select * from lib order by book asc");//오름차순으로정렬함
sql_result = mysql_store_result(connection);
while ((sql_row = mysql_fetch_row(sql_result)) != NULL){
booktype.book=sql_row[0];
booktype.author=sql_row[1];
booktype.publisher=sql_row[2];
booktype.year=sql_row[4];
booktype.avail=sql_row[5];
wirte(client_sockfd, &booktype, sizeof(struct booktype));
}
break;
}
case 2:{
char *ch;
int len=0, tmp;
read(client_sockfd, &len, 1);//책이름 길이 읽기 1
ch = (char *)malloc(sizeof(len));
read (client_sockfd, ch, len);//책이름 읽기2
printf("%d", len);
printf("%s\n", ch);
sprintf(query, "update lib set avail = 'n' where book = '%s'", ch);
query_stat = mysql_query(connection, query);
sql_result = mysql_store_result(connection);
if (sql_result != NULL){//성공시
tmp = 1;
write(client_sockfd, &tmp, 1);
}
else{//실패시
tmp = 0;
write(client_sockfd, &tmp, 1);
}
close(client_sockfd);
free(ch);
break;
}
case 3:{
}
case 4:{
}
case 5:{
printf("client가 종료되었습니다.\n");
}
}
}
close(client_sockfd);
}