Initial Commit of hypercube

main.c

@@ -0,0 +1,68 @@
+#include "hypercube.h"
+
+extern hypercube_config cfg;
+
+void mainloop(void)
+{
+  DEBUGF("entering mainloop");
+  while (1) 
+  {
+    net_wait_for_events();
+#ifdef SOCKET_TIMEOUT
+    net_periodic();
+#endif
+    tracker_periodic();
+  }
+}
+void handle_fatal_sig(int sig)
+{
+  aklogf(LOG_ERROR, "Exiting on signal %d.", sig);
+  exit(sig);
+}
+void handle_reload_sig(int sig)
+{
+  aklogf(LOG_INFO, "Got signal %d, reloading config...", sig);
+  cfg_reload();
+}
+void final_init(void)
+{
+  struct stat ost, st;
+  
+  if (stat("/", &ost) != 0) { perror("Couldn't stat /"); exit(1); }
+  if (cfg.chroot_dir != NULL && (chroot(cfg.chroot_dir) != 0 || chdir("/") != 0)) { perror("Changing root directory"); exit(1); }
+  if (stat(cfg.default_root, &st) == 0)
+  {
+    if (st.st_ino == ost.st_ino)
+    {
+      fprintf(stderr, "Refusing to start with filesystem root as default root.\n");
+      exit(1);
+    }
+  } else
+  {
+    fprintf(stderr, "Warning: Couldn't access default root (%s): %s\n", cfg.default_root, strerror(errno));
+  }
+  if (cfg.run_as_gid != -1 && setgid(cfg.run_as_gid) != 0) { perror("Changing GID"); exit(1); }
+  if (cfg.run_as_uid != -1 && setuid(cfg.run_as_uid) != 0) { perror("Changing UID"); exit(1); }
+  if (cfg.background == 1)
+  {
+    fclose(stdin); fclose(stdout); fclose(stderr);
+    if (fork() != 0) exit(0);
+  }
+  signal(SIGPIPE, SIG_IGN);
+  signal(SIGCHLD, SIG_IGN);
+  signal(SIGTERM, handle_fatal_sig);
+  signal(SIGINT, handle_fatal_sig);
+  signal(SIGHUP, handle_reload_sig);
+}
+int main(int argc, char *argv[])
+{
+  cfg_init();
+  log_init();
+  net_init();
+  http_init();
+  tracker_init();
+  net_start_listen();
+  final_init();
+  mainloop();
+  return 0;
+}