Fix network support
Multiple clients can now connect. (For now two first clients will play)
This commit is contained in:
parent
b00565ea66
commit
160e63e91c
@ -5,11 +5,15 @@ all: server
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server: server.o net.o asciiart.o game.o
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clean:
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-rm -f *.o
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-rm -f server *.o *~
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depend:
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makedepend *.c -Y. 2>/dev/null
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# DO NOT DELETE
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asciiart.o: game.h asciiart.h
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game.o: net.h game.h
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net.o: net.h
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net.o: net.h server.h
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server.o: net.h game.h asciiart.h
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203
src/net.c
203
src/net.c
@ -13,11 +13,20 @@
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#include <assert.h>
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#include "net.h"
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#include "server.h"
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#define MAX_CLIENTS 2
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#define MAX_CLIENTS 10
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#define SRV_FDS 1
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struct client {
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int fd;
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char buf[BUFSIZ];
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int bufend;
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int linetoolong;
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};
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int servsock;
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struct client clients[MAX_CLIENTS];
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struct pollfd pollfds[SRV_FDS+MAX_CLIENTS];
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int nclients = 0;
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@ -32,6 +41,19 @@ errx(int eval, const char *fmt, ...) {
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exit(eval);
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}
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/*
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void
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parse_line(int clientid, char *line) {
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printf("line: %d \"%s\"\n", clientid, line);
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}
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*/
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void
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parse_linetoolong(int clientid, char *line) {
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printf("linetoolong: %d \"%s\"\n", clientid, line);
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}
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struct file sfile[2];
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void
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@ -55,7 +77,7 @@ net_server(int port) {
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errx(1, "bind port %d: %s\n", port, strerror(errno));
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if (listen(servsock, 10) < 0)
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errx(1, "listen: %s\n", strerror(errno));
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#if 1
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#if 0
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// FIXME Temporary startup. Use net_poll for this later:
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printf("Waiting for connections on port %d...\n", port);
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for (int i=0; i<2; i++) {
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@ -72,18 +94,19 @@ net_server(int port) {
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sfile[i].iend=0;
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sfile[i].oend=0;
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net_side_printf(i, "Welcome!\n");
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net_client_printf(i, "Welcome!\n");
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if (i==0)
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net_side_printf(i, "Waiting for another player...\n");
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net_client_printf(i, "Waiting for another player...\n");
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}
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net_all_printf("Starting game\n");
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#else
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pollfds[0].fd=servsock;
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pollfds[0].events=POLLIN|POLLERR|POLLHUP;
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for (int i=SRV_FDS; i<(SRV_FDS+MAX_CLIENTS); i++) {
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pollfds[0].fd=-1;
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pollfds[0].events=0;
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for (int i=0; i<MAX_CLIENTS; i++) {
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pollfds[SRV_FDS+i].fd=-1;
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pollfds[SRV_FDS+i].events=0;
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}
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printf("Waiting for connections on port %d...\n", port);
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#endif
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}
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@ -106,11 +129,12 @@ net_all_flush() {
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}
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void
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net_side_printf(int side, const char *fmt, ...) {
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net_client_printf(int clientid, const char *fmt, ...) {
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va_list ap;
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char buf[BUFSIZ];
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int len, n;
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assert((side==0) || (side==1));
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struct client *c = &clients[clientid];
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va_start(ap, fmt);
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len=vsnprintf(buf, sizeof(buf)-1, fmt, ap);
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va_end(ap);
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@ -118,7 +142,7 @@ net_side_printf(int side, const char *fmt, ...) {
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errx(1, "BUFSIZ too small\n");
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char *bufp=buf;
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do {
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n=write(sfile[side].fd, bufp, len);
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n=write(c->fd, bufp, len);
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if (n<0)
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errx(1, "write: %s\n", strerror(errno));
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bufp+=n;
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@ -135,10 +159,11 @@ net_all_printf(const char *fmt, ...) {
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va_end(ap);
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if (len > BUFSIZ-1)
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errx(1, "BUFSIZ too small\n");
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for (int side=0; side<2; side++) {
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for (int clientid=0; clientid<2; clientid++) {
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struct client *c = &clients[clientid];
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char *bufp=buf;
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do {
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n=write(sfile[side].fd, bufp, len);
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n=write(c->fd, bufp, len);
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if (n<0)
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errx(1, "write: %s\n", strerror(errno));
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bufp+=n;
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@ -148,6 +173,8 @@ net_all_printf(const char *fmt, ...) {
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#endif
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#define min(a,b) ((a<b) ? (a) : (b))
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int
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net_getc_fillbuf(struct file *f) {
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int n;
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@ -174,7 +201,7 @@ net_getc(int side) {
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#if 0
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void
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net_side_flush(int side) {
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net_client_flush(int side) {
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start=0;
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do start+=write(fd[side], obuf[side]+start, obufend);
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while (start < obufend);
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@ -183,16 +210,16 @@ net_side_flush(int side) {
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void
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net_all_flush() {
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for (int i=0; i<2; i++)
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net_side_flush(i);
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net_client_flush(i);
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}
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static void
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net_side_vprintf(int side, const char *fmt, va_list ap) {
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net_client_vprintf(int side, const char *fmt, va_list ap) {
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n=vsnprintf(obuf[side], BUFSIZ-obufend, fmt, ap);
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if (n > (BUFSIZ-obufend-1)) {
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if (n > BUFSIZ-1)
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errx(1, "BUFSIZ too small\n");
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net_side_flush(side);
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net_client_flush(side);
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n=vsnprintf(obuf[side], BUFSIZ-obufend, fmt, ap);
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}
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obufend[side]+=n;
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@ -203,20 +230,22 @@ net_all_printf(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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for (int i=0; i<2; i++)
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net_side_vprintf(i, fmt, ap);
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net_client_vprintf(i, fmt, ap);
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va_end(ap);
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}
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void
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net_side_printf(int side, const char *fmt, ...) {
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net_client_printf(int side, const char *fmt, ...) {
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va_list ap;
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assert((side==0) || (side==1));
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va_start(ap, fmt);
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net_side_vprintf(side, fmt, ap);
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net_client_vprintf(side, fmt, ap);
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va_end(ap);
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}
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#endif
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void net_client_accept(int servsock);
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void net_client_read(int clientid);
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void
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net_poll() {
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@ -225,34 +254,120 @@ net_poll() {
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if (npoll<0)
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errx(1, "poll: %s", strerror(errno));
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if (pollfds[0].revents) {
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struct sockaddr_in clientaddr;
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int cfd;
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socklen_t slen;
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cfd=accept(servsock, (struct sockaddr *)&clientaddr, &slen);
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if (cfd<0)
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errx(1, "accept: %s", strerror(errno));
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// FIXME log, shout, or something
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if (nclients>MAX_CLIENTS) {
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#define STR_SERVER_FULL "Sorry, the server is full"
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write(cfd, STR_SERVER_FULL, sizeof(STR_SERVER_FULL)-1);
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close(cfd);
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} else {
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int i;
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for (i=SRV_FDS; i<(SRV_FDS+MAX_CLIENTS); i++)
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if (pollfds[i].fd==-1) break;
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pollfds[i].fd=cfd;
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pollfds[i].events=POLLIN|POLLERR|POLLHUP;
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nclients++;
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}
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net_client_accept(pollfds[0].fd);
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npoll--;
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}
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for (int i=SRV_FDS; npoll && i<(SRV_FDS+MAX_CLIENTS); i++) {
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for (int i=0; npoll && i<MAX_CLIENTS; i++) {
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if (pollfds[SRV_FDS+i].revents) {
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int n;
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char buf[100];
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n=read(pollfds[SRV_FDS+i].fd, &buf, sizeof(buf));
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// parse buf
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// handle disconnections
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net_client_read(i);
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npoll--;
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}
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}
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}
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void
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net_client_accept(int servsock) {
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struct sockaddr_in clientaddr;
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int cfd;
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socklen_t slen;
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cfd=accept(servsock, (struct sockaddr *)&clientaddr, &slen);
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if (cfd<0)
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errx(1, "accept: %s", strerror(errno));
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// FIXME log, shout, or something
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if (nclients>MAX_CLIENTS) {
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#define STR_SERVER_FULL "Sorry, the server is full\n"
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write(cfd, STR_SERVER_FULL, sizeof(STR_SERVER_FULL)-1);
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close(cfd);
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} else {
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int clientid;
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for (clientid=0; clientid<MAX_CLIENTS; clientid++)
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if (pollfds[SRV_FDS+clientid].fd == -1) break;
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printf("Client %d connected...\n", clientid);
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pollfds[SRV_FDS+clientid].fd=cfd;
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pollfds[SRV_FDS+clientid].events=POLLIN|POLLERR|POLLHUP;
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clients[clientid].fd = cfd;
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clients[clientid].linetoolong = 0;
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clients[clientid].bufend = 0;
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server_client_connect(clientid);
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nclients++;
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}
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}
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void
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net_client_close(int clientid) {
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printf("Closing down client %d...\n", clientid);
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close(pollfds[SRV_FDS+clientid].fd);
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pollfds[SRV_FDS+clientid].revents = 0;
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pollfds[SRV_FDS+clientid].fd = -1;
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clients[clientid].fd = -1;
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clients[clientid].linetoolong = 0;
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clients[clientid].bufend = 0;
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nclients--;
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}
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void
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net_client_read(int clientid) {
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struct client *c = &clients[clientid];
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int len = c->bufend;
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int n;
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n = read(c->fd, c->buf + len, BUFSIZ - len);
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// printf("read client %d %d\n", clientid, n);
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if (n==0) {
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net_client_close(clientid);
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return;
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}
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if (n<0)
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errx(1, "read fail: %s\n", strerror(errno));
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char *line = c->buf;
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char *bufend = c->buf + n;
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char *p = c->buf + len; /* start search for '\n' at end of last buffer */
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while ((p = memchr(p, '\n', bufend - p))) {
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*p='\0';
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if ((p - line > 0) && (*(p-1) == '\r'))
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*(p-1)='\0';
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if (c->linetoolong) {
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c->linetoolong = 0;
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} else {
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parse_line(clientid, line);
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}
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line=++p; // start of unparsed buffer
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}
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if (line == c->buf) {
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/* linestart at start of buffer ie nothing was parsed */
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if ((bufend == c->buf + BUFSIZ) && !c->linetoolong) {
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/* buffer is full with overlong line
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* send to parser for error msg or partial parsing */
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c->linetoolong = 1;
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c->buf[BUFSIZ-1]='\0';
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parse_linetoolong(clientid, line);
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}
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if (c->linetoolong)
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c->bufend = 0;
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} else {
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if (bufend - line) {
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/* move partial line to beginning of buffer */
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memmove(c->buf, line, bufend - line);
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c->bufend = bufend - line;
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}
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}
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}
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/*
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int
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main() {
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net_server(6243);
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for (;;)
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net_poll();
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}
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*/
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@ -18,6 +18,7 @@ extern struct file sfile[2];
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extern void net_server(int port);
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extern void net_poll();
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#if 1
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extern int net_getc_fillbuf(struct file *f);
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@ -30,7 +31,7 @@ extern int _net_getc(int side);
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#endif
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extern void net_all_printf(const char *fmt, ...);
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extern void net_side_printf(int side, const char *fmt, ...);
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extern void net_client_printf(int side, const char *fmt, ...);
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extern void net_all_flush();
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#endif
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85
src/server.c
85
src/server.c
@ -200,17 +200,17 @@ simple_game(void)
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net_all_printf("%s's move\n", sideinfo[side].name);
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prompt:
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net_side_printf(side, "> ");
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net_client_printf(side, "> ");
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net_all_flush();
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r = read_move(side, &m);
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if (r != HUGE_SUCCESS) {
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net_side_printf(side, "unknown command\n");
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net_client_printf(side, "unknown command\n");
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goto prompt;
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}
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if (perform_move(&game, side, m) != HUGE_SUCCESS) {
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net_side_printf(side, "illegal move\n");
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net_client_printf(side, "illegal move\n");
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goto prompt;
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}
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@ -229,14 +229,87 @@ simple_game(void)
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}
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}
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game_t game;
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void
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parse_line(int clientid, char *line) {
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move_t move;
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if (parse_move(line, &move) != HUGE_SUCCESS) {
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net_client_printf(clientid, "not a valid move description: '%s'\n", line);
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return;
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}
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if (perform_move(&game, clientid, move) != HUGE_SUCCESS) {
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net_client_printf(clientid, "invalid move\n");
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return;
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}
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if (game.last_move.type == M_ROTATE) {
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net_all_printf("move: %c%c rotated %s\n",
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game.last_move.y+'A',
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game.last_move.x+'0',
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game.last_move.dir==R_CW ? "R" : "L");
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} else {
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int nx, ny;
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move_dest(game.last_move, &nx, &ny);
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net_all_printf("move: %c%c moved to %c%c\n",
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game.last_move.y+'A',
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game.last_move.x+'0',
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ny+'A', nx+'0');
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}
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if (game.last_hit.piece != NONE) {
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net_all_printf("laser hits %s %s at %c%c\n",
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sideinfo[game.last_hit.side].name,
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pieceinfo[game.last_hit.piece].name,
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game.laser_pos[1]+'A', game.laser_pos[0]+'0');
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} else {
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net_all_printf("laser hits wall at %c%c\n",
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game.laser_pos[1]+'A', game.laser_pos[0]+'0');
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}
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char aabuf[ASCIIART_SMALL_BUFSZ];
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asciiart_small_draw_board(aabuf, &game);
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net_all_printf("%s", aabuf);
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switch (game.winner) {
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case SILVER:
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net_all_printf("SILVER WINS!\n");
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exit(0);
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case RED:
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net_all_printf("RED WINS!\n");
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exit(0);
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}
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}
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int player[2]={0, 0};
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void
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server_client_connect(int clientid) {
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assert(clientid<2);
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player[clientid]=1;
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if (player[0] && player[1]) {
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char aabuf[ASCIIART_SMALL_BUFSZ];
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init_game(&game);
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setup_board(&game, classic_setup);
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asciiart_small_draw_board(aabuf, &game);
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net_all_printf("%s", aabuf);
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}
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}
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int
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main(int argc, char **argv) {
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if (argc > 1 && strcmp(argv[1], "local")==0) {
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terminal_game();
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return 0;
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} else {
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net_server(15239);
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for (;;)
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net_poll();
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}
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net_server(15239);
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simple_game();
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return 0;
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}
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