2 * IRC - Internet Relay Chat, ircd/list.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Finland
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 1, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include "ircd_alloc.h"
29 #include "ircd_reply.h"
30 #include "ircd_string.h"
46 #include <stddef.h> /* offsetof */
47 #include <unistd.h> /* close */
51 static struct liststats {
53 } cloc, crem, users, servs, links, classs;
56 static unsigned int localClientAllocCount;
57 static struct Client* localClientFreeList;
59 static unsigned int remoteClientAllocCount;
60 static struct Client* remoteClientFreeList;
62 static unsigned int slinkAllocCount;
63 static struct SLink* slinkFreeList;
70 * pre-allocate MAXCONNECTIONS local clients
72 for (i = 0; i < MAXCONNECTIONS; ++i) {
73 cptr = (struct Client*) MyMalloc(CLIENT_LOCAL_SIZE);
74 cptr->next = localClientFreeList;
75 localClientFreeList = cptr;
76 ++localClientAllocCount;
80 memset(&cloc, 0, sizeof(cloc));
81 memset(&crem, 0, sizeof(crem));
82 memset(&users, 0, sizeof(users));
83 memset(&servs, 0, sizeof(servs));
84 memset(&links, 0, sizeof(links));
85 memset(&classs, 0, sizeof(classs));
90 * Create a new struct Client structure and set it to initial state.
92 * from == NULL, create local client (a client connected to a socket).
94 * from != NULL, create remote client (behind a socket associated with
95 * the client defined by 'from').
96 * ('from' is a local client!!).
98 struct Client* make_client(struct Client *from, int status)
100 struct Client* cptr = 0;
102 * Check freelists first to see if we can grab a client without
103 * having to call malloc.
109 if ((cptr = remoteClientFreeList))
110 remoteClientFreeList = cptr->next;
112 cptr = (struct Client*) MyMalloc(CLIENT_REMOTE_SIZE);
113 ++remoteClientAllocCount;
117 * NOTE: Do not remove this, a lot of code depends on the entire
118 * structure being zeroed out
120 memset(cptr, 0, CLIENT_REMOTE_SIZE); /* All variables are 0 by default */
127 if ((cptr = localClientFreeList))
128 localClientFreeList = cptr->next;
130 cptr = (struct Client*) MyMalloc(CLIENT_LOCAL_SIZE);
131 ++localClientAllocCount;
135 * NOTE: Do not remove this, a lot of code depends on the entire
136 * structure being zeroed out
138 memset(cptr, 0, CLIENT_LOCAL_SIZE); /* All variables are 0 by default */
141 cptr->since = cptr->lasttime = cptr->firsttime = CurrentTime;
142 cptr->lastnick = TStime();
143 cptr->nextnick = CurrentTime - NICK_DELAY;
144 cptr->nexttarget = CurrentTime - (TARGET_DELAY * (STARTTARGETS - 1));
145 cptr->handler = UNREGISTERED_HANDLER;
146 cptr->from = cptr; /* 'from' of local client is self! */
148 cptr->status = status;
150 strcpy(cptr->username, "unknown");
162 void free_client(struct Client* cptr)
167 * forget to remove the client from the hash table?
169 assert(cptr->hnext == cptr);
180 * make sure we have cleaned up local resources
183 --cptr->dns_reply->ref_count;
185 ip_registry_local_disconnect(cptr);
188 DBufClear(&cptr->sendQ);
189 DBufClear(&cptr->recvQ);
191 release_listener(cptr->listener);
192 cptr->next = localClientFreeList;
193 localClientFreeList = cptr;
196 cptr->next = remoteClientFreeList;
197 remoteClientFreeList = cptr;
201 struct Server *make_server(struct Client *cptr)
203 struct Server *serv = cptr->serv;
207 serv = (struct Server*) MyMalloc(sizeof(struct Server));
209 memset(serv, 0, sizeof(struct Server)); /* All variables are 0 by default */
214 cptr->serv->lag = 60000;
216 DupString(serv->last_error_msg, "<>"); /* String must be non-empty */
222 * Taken the code from ExitOneClient() for this and placed it here.
225 void remove_client_from_list(struct Client *cptr)
228 cptr->prev->next = cptr->next;
230 GlobalClientList = cptr->next;
231 GlobalClientList->prev = 0;
234 cptr->next->prev = cptr->prev;
236 cptr->next = cptr->prev = 0;
238 if (IsUser(cptr) && cptr->user) {
239 add_history(cptr, 0);
243 free_user(cptr->user);
248 if (cptr->serv->user) {
249 free_user(cptr->serv->user);
250 cptr->serv->user = 0;
252 if (cptr->serv->client_list)
253 MyFree(cptr->serv->client_list);
254 MyFree(cptr->serv->last_error_msg);
264 * Although only a small routine, it appears in a number of places
265 * as a collection of a few lines...functions like this *should* be
266 * in this file, shouldnt they ? after all, this is list.c, isn't it ?
269 void add_client_to_list(struct Client *cptr)
272 * Since we always insert new clients to the top of the list,
273 * this should mean the "me" is the bottom most item in the list.
274 * XXX - don't always count on the above, things change
277 cptr->next = GlobalClientList;
278 GlobalClientList = cptr;
280 cptr->next->prev = cptr;
284 * Look for ptr in the linked listed pointed to by link.
286 struct SLink *find_user_link(struct SLink *lp, struct Client *ptr)
290 if (lp->value.cptr == ptr)
298 struct SLink* make_link(void)
300 struct SLink* lp = slinkFreeList;
302 slinkFreeList = lp->next;
304 lp = (struct SLink*) MyMalloc(sizeof(struct SLink));
314 void free_link(struct SLink* lp)
317 lp->next = slinkFreeList;
325 struct DLink *add_dlink(struct DLink **lpp, struct Client *cp)
327 struct DLink* lp = (struct DLink*) MyMalloc(sizeof(struct DLink));
331 if ((lp->next = *lpp))
337 void remove_dlink(struct DLink **lpp, struct DLink *lp)
343 if ((lp->prev->next = lp->next))
344 lp->next->prev = lp->prev;
346 else if ((*lpp = lp->next))
347 lp->next->prev = NULL;
351 struct ConfClass *make_class(void)
353 struct ConfClass *tmp;
355 tmp = (struct ConfClass*) MyMalloc(sizeof(struct ConfClass));
363 void free_class(struct ConfClass * tmp)
372 void send_listinfo(struct Client *cptr, char *name)
374 int inuse = 0, mem = 0, tmp = 0;
376 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Local: inuse: %d(%d)",
377 inuse += cloc.inuse, tmp = cloc.inuse * CLIENT_LOCAL_SIZE);
379 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Remote: inuse: %d(%d)",
380 crem.inuse, tmp = crem.inuse * CLIENT_REMOTE_SIZE);
383 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Users: inuse: %d(%d)",
384 users.inuse, tmp = users.inuse * sizeof(struct User));
386 inuse += users.inuse;
387 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Servs: inuse: %d(%d)",
388 servs.inuse, tmp = servs.inuse * sizeof(struct Server));
390 inuse += servs.inuse;
391 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Links: inuse: %d(%d)",
392 links.inuse, tmp = links.inuse * sizeof(struct SLink));
394 inuse += links.inuse;
395 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Classes: inuse: %d(%d)",
396 classs.inuse, tmp = classs.inuse * sizeof(struct ConfClass));
398 inuse += classs.inuse;
399 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Confs: inuse: %d(%d)",
400 GlobalConfCount, tmp = GlobalConfCount * sizeof(struct ConfItem));
402 inuse += GlobalConfCount;
403 send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Totals: inuse %d %d",