145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
#include "../../core/communication.h"
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#include "../../core/process.h"
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#include "../../core/error.h"
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#define PONGD_SERVICE_NAME "pongd"
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int cpt = 0;
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void handle_new_connection (struct service *srv, struct ipc_process_array *ap)
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{
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struct ipc_process *p = malloc(sizeof(struct ipc_process));
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memset(p, 0, sizeof(struct ipc_process));
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if (ipc_server_accept (srv, p) < 0) {
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handle_error("server_accept < 0");
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} else {
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printf("new connection\n");
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}
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if (ipc_process_add (ap, p) < 0) {
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handle_error("ipc_process_add < 0");
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}
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cpt++;
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printf ("%d client(s)\n", cpt);
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}
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void handle_new_msg (struct ipc_process_array *ap, struct ipc_process_array *proc_to_read)
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{
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struct ipc_message m;
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memset (&m, 0, sizeof (struct ipc_message));
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int i;
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for (i = 0; i < proc_to_read->size; i++) {
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// printf ("loop handle_new_msg\n");
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if (ipc_server_read (proc_to_read->tab_proc[i], &m) < 0) {
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handle_error("server_read < 0");
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}
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// close the process then delete it from the process array
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if (m.type == MSG_TYPE_CLOSE) {
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cpt--;
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printf ("disconnection => %d client(s) remaining\n", cpt);
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if (ipc_server_close_proc (proc_to_read->tab_proc[i]) < 0)
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handle_err( "handle_new_msg", "server_close_proc < 0");
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if (ipc_process_del (ap, proc_to_read->tab_proc[i]) < 0)
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handle_err( "handle_new_msg", "ipc_process_del < 0");
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if (ipc_process_del (proc_to_read, proc_to_read->tab_proc[i]) < 0)
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handle_err( "handle_new_msg", "ipc_process_del < 0");
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i--;
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continue;
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}
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printf ("new message : %s", m.val);
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if (ipc_server_write (proc_to_read->tab_proc[i], &m) < 0) {
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handle_err( "handle_new_msg", "server_write < 0");
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}
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}
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}
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/*
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* main loop
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*
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* accept new application connections
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* read a message and send it back
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* close a connection if MSG_TYPE_CLOSE received
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*/
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void main_loop (struct service *srv)
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{
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int i, ret = 0;
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struct ipc_process_array ap;
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memset(&ap, 0, sizeof(struct ipc_process_array));
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struct ipc_process_array proc_to_read;
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memset(&proc_to_read, 0, sizeof(struct ipc_process_array));
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while(1) {
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ret = ipc_server_select (&ap, srv, &proc_to_read);
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// printf ("on peut lire ces process:\n");
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// ipc_process_array_print (&proc_to_read);
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// printf ("-- \n\n");
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if (ret == CONNECTION) {
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handle_new_connection (srv, &ap);
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} else if (ret == APPLICATION) {
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handle_new_msg (&ap, &proc_to_read);
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} else { // both new connection and new msg from at least one client
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handle_new_connection (srv, &ap);
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handle_new_msg (&ap, &proc_to_read);
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}
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ipc_process_array_free (&proc_to_read);
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}
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for (i = 0; i < ap.size; i++) {
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if (ipc_server_close_proc (ap.tab_proc[i]) < 0) {
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handle_error( "server_close_proc < 0");
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}
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}
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}
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/*
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* service ping-pong
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*
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* 1. creates the named pipe /tmp/<service>, then listens
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* 2. opens the named pipes in & out
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* 3. talks with the (test) program
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* 4. closes the test program named pipes
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* 5. removes the named pipe /tmp/<service>
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*/
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int main(int argc, char * argv[], char **env)
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{
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struct service srv;
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memset (&srv, 0, sizeof (struct service));
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srv.index = 0;
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srv.version = 0;
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// unlink("/tmp/ipc/pongd-0-0");
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if (ipc_server_init (argc, argv, env, &srv, PONGD_SERVICE_NAME) < 0) {
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handle_error("server_init < 0");
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return EXIT_FAILURE;
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}
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printf ("Listening on %s.\n", srv.spath);
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printf("MAIN: server created\n" );
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// the service will loop until the end of time, a specific message, a signal
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main_loop (&srv);
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// the application will shut down, and remove the service named pipe
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if (ipc_server_close (&srv) < 0) {
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handle_error("server_close < 0");
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}
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return EXIT_SUCCESS;
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}
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