void CreateLCObjects()
{
int n;
int obj;
char c;
for(obj=1; obj<=app_num_objects; obj++)
{
Print("+ Encoding Object #%-2d: ",obj);
n=create_lc_object(obj);
if(n!=0)
{
Print("Error! \n");
if(n==-1) err_seek(tempname1);
if(n==-2) err_read(tempname1);
if(n==-3) err_mem();
if(n==-4) err_write(tempname2);
if(n==-5) err_lcobjhdr(tempname1);
}
c = app_obj_seekattr[obj] ? '*':' ';
if(!quiet)
{
printf("[û] ");
if(!verbose) printf("(%1.1f%%)\n", ((float)(obj_new_size+0.01)/(float)(obj_old_size+0.01))*100);
else
{ printf("Old=%7d, New=%7d, (%1.1f%%) (%s)%c\n", obj_old_size,obj_new_size, ((float)(obj_new_size+0.01)/(float)(obj_old_size+0.01))*100, encodetype[app_enc_status], c);
if(verbxtra) printf(" ** %s **, ** %s **, %7d - fixups\n", app_obj_iscode ? "CODE":"DATA", app_obj_is32bit ? "32bit":"16bit", app_obj_seekattr[obj]);
}
}
}
}
void CreateLCHeader()
{
int n;
Print("+ Creating LC Header : ");
n=create_lc_header();
if(n!=0)
{
Print("Error! \n");
if(n==-1)
err_seek(tempname1);
if(n==-2)
err_read(tempname1);
if(n==-3)
err_write(tempname2);
if(n==-4)
err_linker(tempname1);
if(n==-5)
err_objects(tempname1);
}
else
{
if(!verbose)
Print("Ok.\n");
else
Print("Ok. (%d Objects)\n",app_num_objects);
}
}
int FindExecType()
{
int n;
n=get_exec_type();
if(n==-1) err_read(tempname1);
if(n==-2) err_support(oldfilename);
if(n==3) err_formlc(oldfilename);
if(n==4) err_formpe(oldfilename);
if(n==5) err_formpmw1(oldfilename);
return(n);
}
void CreateLCFixups()
{
int n;
Print("+ Encoding LC Fixups : ");
n=create_lc_fixups();
if(n!=0)
{
Print("Error!\n");
if(n==-1) err_seek(tempname1);
if(n==-2) err_read(tempname1);
if(n==-3) err_mem();
if(n==-4) err_write(tempname2);
}
if(quiet!=TRUE)
{
printf("[û] ");
if(!verbose) printf("(%1.1f%%)\n", ((float)(obj_new_size+0.01)/(float)(obj_old_size+0.01))*100);
else printf("Old=%7d, New=%7d, (%1.1f%%) (%s)\n", obj_old_size,obj_new_size, ((float)(obj_new_size+0.01)/(float)(obj_old_size+0.01))*100, encodetype[app_enc_status]);
}
}
int main(int argc, char *argv[])
{
int sockfd, newsockfd, portno;
socklen_t clilen;
char buffer[RCVLEN];
char sendbuff[SNDLEN];
struct sockaddr_in serv_addr, cli_addr;
int n,i,j,newtargetsockfd;
int yes = 1;
// file descriptor bookkeeping
int fdmax;
fd_set master;
fd_set read_fds;
int connections[32][2] = {0}; // length of a fd_set
if (argc < 2) {
fprintf(stderr,"error, no port provided\n");
exit(1);
}
// set up listener socket
sockfd = err_socket(AF_INET, SOCK_STREAM, 0);
bzero((char *) &serv_addr, sizeof(serv_addr));
portno = atoi(argv[1]);
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(portno);
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));
if (bind(sockfd, (struct sockaddr *) &serv_addr,
sizeof(serv_addr)) < 0)
err_exit("error on binding");
// listen only supports up to 5 backlog
listen(sockfd,32);
fdmax = sockfd;
connections[0][0] = sockfd;
connections[0][1] = sockfd;
FD_SET(sockfd, &master);
fprintf(stderr,"starting server \n");
int loop = 0;
for (;;){
read_fds = master;
if (select(fdmax+1, &read_fds, NULL, NULL, NULL) == -1)
err_exit("error on select");
for(i = 0; i <= 32; i++){
if (connections[i][0] && connections[i][0] < 32) {
if (!FD_ISSET(connections[i][0],&read_fds))
continue;
fprintf(stderr,"checking connection...\n");
if (connections[i][0] == sockfd){ // handle new connections
fprintf(stderr,"found new connection\n");
clilen = sizeof(cli_addr);
newsockfd = accept(sockfd,
(struct sockaddr *) &cli_addr,
&clilen);
if (newsockfd < 0)
err_exit("error on accept");
// add new fd to connections list
for (j = 0; j < 32; j++){
if (!connections[j][0]){
connections[j][0] = newsockfd;
connections[j][1] = newsockfd;
break;
}
}
FD_SET(newsockfd, &master);
if (newsockfd > fdmax)
fdmax = newsockfd;
}
else { // handle each client
fprintf(stderr,"handling client %d\n",connections[i][0]);
bzero(buffer,256);
err_read(connections[i][0],buffer,RCVLEN-1);
if (strcmp(buffer,"LIST\n") == 0){ // list all connected clients
sprintf(buffer,"you are client %d\n",connections[i][0]);
err_write(connections[i][0],buffer,strlen(buffer));
err_write(connections[i][0],"listing all connections...\n",27);
for (j = 0; j < 32; j++){
if (connections[j][0] && connections[j][0] != sockfd){
sprintf(buffer,"client found: %d\n",connections[j][0]);
err_write(connections[i][0],buffer, strlen(buffer));
}
}
n = err_write(connections[i][0],"done listing connections\n",25);
}
else if (sscanf(buffer,"CONNECT TO %d\n",&newtargetsockfd) > 0){ // set up forwarding
fprintf(stderr,"connecting client %d to client %d\n",connections[i][0],newtargetsockfd);
for(j = 0; j < 32; j++){
if (connections[j][0] == newtargetsockfd){
connections[i][1] = newtargetsockfd;
sprintf(buffer,"connected to client %d\n",newtargetsockfd);
err_write(connections[i][0],buffer,strlen(buffer));
j = 40;
break;
}
}
if (j != 40){
err_write(connections[i][0],"could not connect to client\n",28);
}
}
else{ // read from one client, and write to another (input/output clients could be the same)
printf("Here is the message: %s\n",buffer);
err_write(connections[i][0],"message recieved\n",17);
sprintf(sendbuff,"recieved message from client %d: %s\n",connections[i][0],buffer);
err_write(connections[i][1],sendbuff,strlen(sendbuff));
}
}
}
}// loop through file descriptors
}
close(newsockfd);
close(sockfd);
return 0;
}
