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pippijn |
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/* |
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* servers.C: Server and network state tracking. |
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* Rights to this code are documented in doc/LICENSE. |
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* |
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* Copyright © 2005-2007 Atheme Project (http://www.atheme.org) |
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*/ |
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static char const rcsid[] = "$Id"; |
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#include "atheme.h" |
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#include <account/myuser.h> |
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dictionary_tree_t *sidlist; |
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dictionary_tree_t *servlist; |
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list_t tldlist; |
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static BlockHeap *serv_heap; |
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static BlockHeap *tld_heap; |
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/* |
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* init_servers() |
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* |
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* Initializes the server heap and server/sid DTree structures. |
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* |
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* Inputs: |
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* - nothing |
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* |
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* Outputs: |
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* - nothing |
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* |
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* Side Effects: |
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* - if the heap or dtrees fail to initialize, the program |
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* will abort. |
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*/ |
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void |
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init_servers (void) |
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{ |
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serv_heap = BlockHeapCreate (sizeof (server_t), HEAP_SERVER); |
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tld_heap = BlockHeapCreate (sizeof (tld_t), 4); |
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if (serv_heap == NULL || tld_heap == NULL) |
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{ |
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slog (LG_INFO, "init_servers(): block allocator failure."); |
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exit (EXIT_FAILURE); |
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} |
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servlist = dictionary_create ("server", HASH_SERVER, irccasecmp); |
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sidlist = dictionary_create ("sid", HASH_SERVER, strcmp); |
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} |
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/* |
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* server_add(const char *name, unsigned int hops, const char *uplink, |
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* const char *id, const char *desc) |
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* |
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* Server object factory. |
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* |
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* Inputs: |
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* - name of server object to create |
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* - amount of hops server has from services |
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* - name of server's uplink or NULL if it's us |
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* - SID of uplink if applicable otherwise NULL |
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* - server's description |
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* |
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* Outputs: |
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* - on success, a new server object |
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* |
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* Side Effects: |
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* - the new server object is added to the server and sid DTree. |
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*/ |
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server_t * |
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server_add (const char *name, unsigned int hops, const char *uplink, const char *id, const char *desc) |
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{ |
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server_t *s, *u = NULL; |
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const char *tld; |
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if (uplink) |
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{ |
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if (id != NULL) |
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slog (LG_NETWORK, "server_add(): %s (%s), uplink %s", name, id, uplink); |
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else |
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slog (LG_NETWORK, "server_add(): %s, uplink %s", name, uplink); |
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u = server_find (uplink); |
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} |
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else |
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slog (LG_DEBUG, "server_add(): %s, root", name); |
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s = static_cast<server_t *> (BlockHeapAlloc (serv_heap)); |
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if (id != NULL) |
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{ |
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s->sid = sstrdup (id); |
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dictionary_add (sidlist, s->sid, s); |
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} |
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/* check to see if it's hidden */ |
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if (!strncmp (desc, "(H)", 3)) |
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{ |
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s->flags |= SF_HIDE; |
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desc += 3; |
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if (*desc == ' ') |
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desc++; |
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} |
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s->name = sstrdup (name); |
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s->desc = sstrdup (desc); |
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s->hops = hops; |
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s->connected_since = NOW; |
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dictionary_add (servlist, s->name, s); |
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if (u) |
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{ |
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s->uplink = u; |
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node_add (s, node_create (), &u->children); |
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} |
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/* tld list for global noticer */ |
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tld = strrchr (name, '.'); |
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if (tld != NULL) |
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{ |
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if (!tld_find (tld)) |
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tld_add (tld); |
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} |
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cnt.server++; |
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return s; |
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} |
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/* |
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* server_delete(const char *name) |
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* |
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* Finds and recursively destroys a server object. |
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* |
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* Inputs: |
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* - name of server to find and destroy |
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* |
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* Outputs: |
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* - nothing |
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* |
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* Side Effects: |
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* - all users and servers attached to the target are recursively deleted |
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*/ |
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void |
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server_delete (const char *name) |
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{ |
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server_t *s = server_find (name); |
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server_t *child; |
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user_t *u; |
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node_t *n, *tn; |
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if (!s) |
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{ |
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slog (LG_DEBUG, "server_delete(): called for nonexistant server: %s", name); |
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return; |
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} |
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if (s == me.me) |
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{ |
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/* Deleting this would cause confusion, so let's not do it. |
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* Some ircds send SQUIT <myname> when we are squitted. |
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* -- jilles |
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*/ |
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slog (LG_DEBUG, "server_delete(): tried to delete myself"); |
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return; |
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} |
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slog (me.connected ? LG_NETWORK : LG_DEBUG, "server_delete(): %s, uplink %s (%d users)", s->name, s->uplink != NULL ? s->uplink->name : "<none>", s->users); |
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/* first go through it's users and kill all of them */ |
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LIST_FOREACH_SAFE (n, tn, s->userlist.head) |
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{ |
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u = (user_t *) n->data; |
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/* This user split, allow bursted logins for the account. |
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* XXX should we do this here? |
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* -- jilles */ |
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if (u->myuser != NULL) |
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u->myuser->flags &= ~MU_NOBURSTLOGIN; |
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user_delete (u); |
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} |
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LIST_FOREACH_SAFE (n, tn, s->children.head) |
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{ |
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child = static_cast<server_t *> (n->data); |
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server_delete (child->name); |
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} |
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/* now remove the server */ |
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dictionary_delete (servlist, s->name); |
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if (s->sid) |
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dictionary_delete (sidlist, s->sid); |
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if (s->uplink) |
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{ |
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n = node_find (s, &s->uplink->children); |
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node_del (n, &s->uplink->children); |
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node_free (n); |
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} |
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/* If unconnect semantics SQUIT was confirmed, introduce the jupe |
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* now. This must be after removing the server from the dtrees. |
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* -- jilles */ |
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if (s->flags & SF_JUPE_PENDING) |
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jupe (s->name, "Juped"); |
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free (s->name); |
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free (s->desc); |
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if (s->sid) |
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free (s->sid); |
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BlockHeapFree (serv_heap, s); |
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cnt.server--; |
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} |
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/* |
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* server_find(const char *name) |
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* |
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* Finds a server object. |
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* |
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* Inputs: |
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* - name of server to find |
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* |
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* Outputs: |
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* - on success, the server object |
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* - on failure, NULL. |
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* |
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* Side Effects: |
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* - none |
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*/ |
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server_t * |
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server_find (const char *name) |
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{ |
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server_t *s; |
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if (ircd->uses_uid) |
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{ |
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s = static_cast<server_t *> (dictionary_retrieve (sidlist, name)); |
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if (s != NULL) |
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return s; |
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} |
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return static_cast<server_t *> (dictionary_retrieve (servlist, name)); |
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} |
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/* |
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* tld_add(const char *name) |
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* |
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* TLD object factory. |
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* |
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* Inputs: |
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* - name of TLD to cache as an object |
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* |
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* Outputs: |
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* - on success, a TLD object |
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* - on failure, NULL |
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* |
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* Side Effects: |
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* - the TLD object is registered with the TLD list. |
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*/ |
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tld_t * |
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tld_add (const char *name) |
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{ |
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tld_t *tld; |
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node_t *n = node_create (); |
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slog (LG_DEBUG, "tld_add(): %s", name); |
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tld = static_cast<tld_t *> (BlockHeapAlloc (tld_heap)); |
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node_add (tld, n, &tldlist); |
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tld->name = sstrdup (name); |
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cnt.tld++; |
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return tld; |
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} |
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/* |
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* tld_delete(const char *name) |
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* |
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* Destroys a TLD object. |
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* |
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* Inputs: |
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* - name of TLD object to destroy |
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* |
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* Outputs: |
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* - nothing |
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* |
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* Side Effects: |
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* - the TLD object is removed and deregistered from the TLD list. |
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*/ |
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void |
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tld_delete (const char *name) |
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{ |
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tld_t *tld = tld_find (name); |
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node_t *n; |
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if (!tld) |
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{ |
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slog (LG_DEBUG, "tld_delete(): called for nonexistant tld: %s", name); |
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return; |
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} |
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slog (LG_DEBUG, "tld_delete(): %s", tld->name); |
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n = node_find (tld, &tldlist); |
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node_del (n, &tldlist); |
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node_free (n); |
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free (tld->name); |
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BlockHeapFree (tld_heap, tld); |
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cnt.tld--; |
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} |
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/* |
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* tld_find(const char *name) |
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* |
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* Looks up a TLD object. |
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* |
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* Inputs: |
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* - name of TLD object to look up |
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* |
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* Outputs: |
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* - on success, the TLD object |
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* - on failure, NULL |
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* |
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* Side Effects: |
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* - none |
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*/ |
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tld_t * |
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tld_find (const char *name) |
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{ |
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tld_t *tld; |
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node_t *n; |
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if (name == NULL) |
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return NULL; |
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LIST_FOREACH (n, tldlist.head) |
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{ |
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tld = (tld_t *) n->data; |
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if (!strcasecmp (name, tld->name)) |
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return tld; |
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} |
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return NULL; |
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} |
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/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs |
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* vim:ts=8 |
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* vim:sw=8 |
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* vim:noexpandtab |
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*/ |