+static void new_connect(int fd)
+{
+ struct user *u, *v;
+ unsigned char nxn;
+
+ u = malloc(sizeof (struct user));
+ if (!u)
+ fatal("Out of memory");
+ u->fd = fd;
+ u->nick[0] = 0;
+ u->next = user0;
+ u->nextvictim = NULL;
+ u->active = 0;
+ u->nread = 0;
+ u->nwrite = 0;
+ u->playing = 0;
+ u->isbot = 0;
+ u->introduced = 0;
+ u->games = 0;
+ u->action = 0;
+ u->action_received = 0;
+
+ user0 = u;
+
+ nxn = 1;
+
+ again:
+ v = u->next;
+ while(v)
+ {
+ if (v->number == nxn)
+ {
+ nxn++;
+ goto again;
+ }
+ v = v->next;
+ }
+
+ u->number = nxn;
+ if (verbose)
+ printf("RND_SERVER: client %d connecting from %s\n", nxn, inet_ntoa(saddr.sin_addr));
+ clients++;
+
+ buf[0] = 0;
+ buf[1] = OP_YOUR_NUMBER;
+ buf[2] = u->number;
+ sendtoone(u, 3);
+}
+
+static void Handle_OP_PROTOCOL_VERSION(struct user *u, unsigned int len)
+{
+ if (len != 5 || buf[2] != PROT_VERS_1 || buf[3] != PROT_VERS_2)
+ {
+ if (verbose)
+ printf("RND_SERVER: client %d (%s) has wrong protocol version %d.%d.%d\n", u->number, u->nick, buf[2], buf[3], buf[4]);
+
+ buf[0] = 0;
+ buf[1] = OP_BADVERS;
+ buf[2] = PROT_VERS_1;
+ buf[3] = PROT_VERS_2;
+ buf[4] = PROT_VERS_3;
+ sendtoone(u, 5);
+ flushuser(u);
+
+ dropuser(u);
+ interrupt = 1;
+ }
+ else
+ {
+ if (verbose)
+ printf("RND_SERVER: client %d (%s) uses protocol version %d.%d.%d\n", u->number, u->nick, buf[2], buf[3], buf[4]);
+ }
+}
+
+static void Handle_OP_NUMBER_WANTED(struct user *u)
+{
+ struct user *v;
+ int nr_wanted = buf[2];
+ int nr_is_free = 1;
+
+ if (verbose)
+ printf("RND_SERVER: client %d (%s) wants to switch to # %d\n",
+ u->number, u->nick, nr_wanted);
+
+ for (v=user0; v; v=v->next)
+ {
+ if (v->number == nr_wanted)
+ {
+ nr_is_free = 0;
+ break;
+ }
+ }
+
+ if (verbose)
+ {
+ if (nr_is_free)
+ printf("RND_SERVER: client %d (%s) switches to # %d\n",
+ u->number, u->nick, nr_wanted);
+ else if (u->number == nr_wanted)
+ printf("RND_SERVER: client %d (%s) still has # %d\n",
+ u->number, u->nick, nr_wanted);
+ else
+ printf("RND_SERVER: client %d (%s) cannot switch (client %d still exists)\n",
+ u->number, u->nick, nr_wanted);
+ }
+
+ if (nr_is_free)
+ u->number = nr_wanted;
+
+ buf[0] = 0;
+ buf[1] = OP_NUMBER_WANTED;
+ buf[2] = nr_wanted;
+ buf[3] = u->number;
+ sendtoone(u, 4);
+}
+
+static void Handle_OP_NICKNAME(struct user *u, unsigned int len)
+{
+ struct user *v;
+ int i;
+
+ if (len>16)
+ len=16;
+ memcpy(u->nick, &buf[2], len-2);
+ u->nick[len-2] = 0;
+ for (i=0; i<len-2; i++)
+ {
+ if (u->nick[i] < ' ' ||
+ (u->nick[i] > 0x7e && u->nick[i] <= 0xa0))
+ {
+ u->nick[i] = 0;
+ break;
+ }
+ }
+
+ if (!u->introduced)
+ {
+ buf[0] = u->number;
+ buf[1] = OP_PLAYER_CONNECTED;
+ broadcast(u, 2, 0);
+ }
+
+ if (verbose)
+ printf("RND_SERVER: client %d calls itself \"%s\"\n", u->number, u->nick);
+ buf[1] = OP_NICKNAME;
+ broadcast(u, len, 0);
+
+ if (!u->introduced)
+ {
+ for (v=user0; v; v=v->next)
+ {
+ if (v != u && v->introduced)
+ {
+ buf[0] = v->number;
+ buf[1] = OP_PLAYER_CONNECTED;
+ buf[2] = (v->games >> 8);
+ buf[3] = (v->games & 0xff);
+ sendtoone(u, 4);
+ buf[1] = OP_NICKNAME;
+ memcpy(&buf[2], v->nick, 14);
+ sendtoone(u, 2+strlen(v->nick));
+ }
+ }
+ if (level != 5)
+ {
+ buf[0] = 0;
+ buf[1] = OP_LEVEL;
+ buf[2] = level;
+ sendtoone(u, 3);
+ }
+ if (mode >= 0)
+ {
+ buf[1] = OP_MODE;
+ buf[2] = mode;
+ sendtoone(u, 3);
+ }
+ }
+
+ u->introduced = 1;
+}
+
+static void Handle_OP_START_PLAYING(struct user *u)