git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@1493 54d463be-8e91-2dee-dedb-b68131a5f0ec
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wizputer
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0f60564280
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229
Dev/server.c
229
Dev/server.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#define PORT 5000
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#define BACKLOG 10
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int sockfd;
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fd_set read_fds, write_fds;
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int fdmax;
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struct buffers {
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int buf_cnt;
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int buf_size;
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char *buf;
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} buffers[16];
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int buf_size = 64;
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int int_socket() {
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struct sockaddr_in my_addr;
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int yes=1;
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FD_ZERO(&read_fds);
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memset(&my_addr, 0, sizeof(my_addr));
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if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
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perror("socket");
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exit(1);
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}
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if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) {
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perror("setsockopt");
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exit(1);
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}
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if(setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, &yes, sizeof(int)) < 0) {
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perror("setsockopt");
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exit(1);
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}
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//unsigned long one = 1;
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if(ioctl(sockfd, FIONBIO, &yes) < 0) {
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perror("ioctl");
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exit(1);
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}
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my_addr.sin_family = AF_INET;
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my_addr.sin_port = htons(PORT);
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my_addr.sin_addr.s_addr = INADDR_ANY;
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if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1) {
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perror("bind");
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exit(1);
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}
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if (listen(sockfd, BACKLOG) == -1) {
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perror("listen");
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exit(1);
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}
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FD_SET(sockfd, &read_fds);
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fdmax = sockfd;
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printf("xo: Server socket: %d\n",sockfd);
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return 0;
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}
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int connect_client() {
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int sin_size;
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int new_fd;
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struct sockaddr_in their_addr;
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sin_size = sizeof(struct sockaddr_in);
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if ((new_fd = accept(sockfd, (struct sockaddr *)&their_addr,&sin_size)) == -1) {
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perror("accept");
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} else {
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FD_SET(new_fd, &read_fds);
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if (new_fd > fdmax) {
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fdmax = new_fd;
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}
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buffers[new_fd].buf_size = buf_size;
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buffers[new_fd].buf = malloc(buf_size);
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printf("xo: new connection from %s on socket %d\n", inet_ntoa(their_addr.sin_addr), new_fd);
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}
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return 0;
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}
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int console_input() {
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int n;
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int arg1;
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char *arg2;
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printf("console in\n");
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arg2 = malloc(16);
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buffers[0].buf_cnt = read(0, buffers[0].buf, buffers[0].buf_size);
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sscanf(buffers[0].buf, "%d:%s", &arg1 , arg2 );
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if ( FD_ISSET( arg1, &read_fds)) {
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if ( (send(arg1, buffers[0].buf, buffers[0].buf_cnt, 0)) < 0 )
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perror("send");
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else
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buffers[0].buf_cnt = 0;
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}
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return 0;
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}
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int recieve(int rfd) {
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char buf[32];
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int num_bytes;
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if ( rfd == sockfd ) {
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connect_client();
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return 0;
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} else if ( rfd == 0 ) {
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console_input();
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return 0;
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}
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if((num_bytes = recv(rfd, buf, sizeof(buf), 0)) <= 0) {
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if(num_bytes == 0) {
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printf("xo: socket %d exited\n", rfd);
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} else {
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perror("recv");
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}
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close(rfd);
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FD_CLR(rfd, &read_fds);
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} else {
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if (( buffers[rfd].buf_cnt + num_bytes ) >= buffers[rfd].buf_size){
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buffers[rfd].buf_size = buffers[rfd].buf_size + num_bytes + 2048;
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buffers[rfd].buf = (char *) realloc(buffers[rfd].buf, buffers[rfd].buf_size);
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}
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memcpy(buffers[rfd].buf + buffers[rfd].buf_cnt, buf, num_bytes);
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buffers[rfd].buf_cnt += num_bytes ;
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}
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return 0;
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}
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int snd(int wfd) {
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int n;
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if ( FD_ISSET(wfd, &read_fds)) {
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if ( wfd != sockfd ) {
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if ( (n = send(wfd, buffers[wfd].buf, buffers[wfd].buf_cnt, 0)) < 0 )
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perror("send");
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else if ( buffers[wfd].buf_cnt == n ) {
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FD_CLR(wfd, &write_fds);
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buffers[wfd].buf_cnt = 0;
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}
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else {
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memcpy(buffers[wfd].buf, buffers[wfd].buf + n, buffers[wfd].buf_cnt - n);
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buffers[wfd].buf_cnt -= n;
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}
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}
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}
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return 0;
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}
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int do_sendrecv() {
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int i, j;
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struct sockaddr_in their_addr;
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fd_set rfds;
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FD_ZERO(&rfds);
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memcpy(&rfds , &read_fds , sizeof(read_fds));
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if ((i = select(fdmax+1, &rfds, &write_fds, NULL, NULL)) == -1) {
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perror("select");
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exit(1);
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}
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for(j = 0; j <= fdmax && i > 0; j++) {
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if (FD_ISSET(j, &write_fds)) {
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snd(j);
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i--;
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}
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if (FD_ISSET(j, &rfds)) {
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recieve(j);
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i--;
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}
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}
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return 0;
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}
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int do_parse() {
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int i;
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for ( i = 1; i <= fdmax; i++) {
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if (buffers[i].buf_cnt > 0)
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FD_SET(i, &write_fds);
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}
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return 0;
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}
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int main(void) {
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int_socket();
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buffers[0].buf_size = buf_size;
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buffers[0].buf = malloc(buf_size);
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FD_SET(0,&read_fds);
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while(1) {
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do_sendrecv();
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do_parse();
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}
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return 0;
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}
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