ermyth/src/servers.C

/*
 * servers.C: Server and network state tracking.
 * Rights to this code are documented in doc/pod/license.pod.
 *
 * Copyright © 2005-2007 Atheme Project (http://www.atheme.org)
 */

static char const rcsid[] = "$Id: servers.C,v 1.4 2007-08-28 17:08:12 pippijn Exp $";

#include "atheme.h"
#include "servers.h"
#include <account/myuser.h>

typedef std::pair<char const * const, server_t *> server_pair;
typedef std::map<char const * const, server_t *, irccase_lt> server_map;
server_map sidlist;
server_map servlist;
list_t tldlist;
server_t::callbacks server_t::callback;

/*
 * init_servers()
 *
 * Initializes the server heap and server/sid DTree structures.
 *
 * Inputs:
 *     - nothing
 *
 * Outputs:
 *     - nothing
 *
 * Side Effects:
 *     - if the heap or dtrees fail to initialize, the program
 *       will abort.
 */
void
init_servers (void)
{
#if 0
  serv_heap = BlockHeapCreate (sizeof (server_t), HEAP_SERVER);
  tld_heap = BlockHeapCreate (sizeof (tld_t), 4);
#endif
}

/*
 * server_add(char const * const name, unsigned int hops, char const * const uplink,
 *            char const * const id, char const * const desc)
 *
 * Server object factory.
 *
 * Inputs:
 *     - name of server object to create
 *     - amount of hops server has from services
 *     - name of server's uplink or NULL if it's us
 *     - SID of uplink if applicable otherwise NULL
 *     - server's description
 *
 * Outputs:
 *     - on success, a new server object
 *
 * Side Effects:
 *     - the new server object is added to the server and sid DTree.
 */
server_t *
server_add (char const * const name, unsigned int hops, char const * const uplink, char const * const id, char const * const description)
{
  server_t *s, *u = NULL;
  char const *tld;
  char const *desc = description;

  if (uplink)
    {
      if (id != NULL)
        slog (LG_NETWORK, "server_add(): %s (%s), uplink %s", name, id, uplink);
      else
        slog (LG_NETWORK, "server_add(): %s, uplink %s", name, uplink);
      u = server_find (uplink);
    }
  else
    slog (LG_DEBUG, "server_add(): %s, root", name);

  s = new server_t;

  if (id != NULL)
    {
      s->sid = sstrdup (id);
      sidlist[s->sid] = s;
    }

  /* check to see if it's hidden */
  if (!strncmp (desc, "(H)", 3))
    {
      s->flags |= SF_HIDE;
      desc += 3;
      if (*desc == ' ')
        desc++;
    }

  s->name = sstrdup (name);
  s->desc = sstrdup (desc);
  s->hops = hops;
  s->connected_since = NOW;

  servlist[s->name] = s;

  if (u)
    {
      s->uplink = u;
      node_add (s, node_create (), &u->children);
    }

  /* tld list for global noticer */
  tld = strrchr (name, '.');

  if (tld != NULL)
    {
      if (!tld_find (tld))
        tld_add (tld);
    }

  cnt.server++;

  return s;
}

void
server_delete (char const * const name)
{
  server_t *s = server_find (name);
  server_delete (s);

  if (!s)
    {
      slog (LG_DEBUG, "server_delete(): called for nonexistant server: %s", name);

      return;
    }
}

/*
 * server_delete(char const * const name)
 *
 * Finds and recursively destroys a server object.
 *
 * Inputs:
 *     - name of server to find and destroy
 *
 * Outputs:
 *     - nothing
 *
 * Side Effects:
 *     - all users and servers attached to the target are recursively deleted
 */
void
server_delete (server_t *s, bool force)
{
  server_t *child;
  user_t *u;
  node_t *n, *tn;

  if (!force && s == me.me)
    {
      /* Deleting this would cause confusion, so let's not do it.
       * Some ircds send SQUIT <myname> when we are squitted.
       * -- jilles
       */
      slog (LG_DEBUG, "server_delete(): tried to delete myself");
      return;
    }

  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);

  /* first go through it's users and kill all of them */
  LIST_FOREACH_SAFE (n, tn, s->userlist.head)
  {
    u = (user_t *) n->data;
    /* This user split, allow bursted logins for the account.
     * XXX should we do this here?
     * -- jilles */
    if (u->myuser != NULL)
      u->myuser->flags &= ~MU_NOBURSTLOGIN;
    user_delete (u);
  }

  LIST_FOREACH_SAFE (n, tn, s->children.head)
  {
    child = static_cast<server_t *> (n->data);
    server_delete (child->name);
  }

  /* now remove the server */
  servlist.erase (s->name);

  if (s->sid)
    sidlist.erase (s->sid);

  if (s->uplink)
    {
      n = node_find (s, &s->uplink->children);
      node_del (n, &s->uplink->children);
      node_free (n);
    }

  /* If unconnect semantics SQUIT was confirmed, introduce the jupe
   * now. This must be after removing the server from the dtrees.
   * -- jilles */
  if (s->flags & SF_JUPE_PENDING)
    phandler->jupe (s->name, "Juped");

  sfree (s->name);
  sfree (s->desc);
  if (s->sid)
    sfree (s->sid);

  delete s;

  cnt.server--;
}

/*
 * server_find(char const * const name)
 *
 * Finds a server object.
 *
 * Inputs:
 *     - name of server to find
 *
 * Outputs:
 *     - on success, the server object
 *     - on failure, NULL.
 *
 * Side Effects:
 *     - none
 */
server_t *
server_find (char const * const name)
{
  server_map::iterator it;

  if (ircd->uses_uid)
    {
      it = sidlist.find (name);
      if (it != sidlist.end ())
        return it->second;
    }

  return ((it = servlist.find (name)) == servlist.end ()
          ? NULL
          : it->second);
}

/*
 * tld_add(char const * const name)
 *
 * TLD object factory.
 *
 * Inputs:
 *     - name of TLD to cache as an object
 *
 * Outputs:
 *     - on success, a TLD object
 *     - on failure, NULL
 *
 * Side Effects:
 *     - the TLD object is registered with the TLD list.
 */
tld_t *
tld_add (char const * const name)
{
  tld_t *tld;
  node_t *n = node_create ();

  slog (LG_DEBUG, "tld_add(): %s", name);

  tld = new tld_t;

  node_add (tld, n, &tldlist);

  tld->name = sstrdup (name);

  cnt.tld++;

  return tld;
}

/*
 * tld_delete(char const * const name)
 *
 * Destroys a TLD object.
 *
 * Inputs:
 *     - name of TLD object to destroy
 *
 * Outputs:
 *     - nothing
 *
 * Side Effects:
 *     - the TLD object is removed and deregistered from the TLD list.
 */
void
tld_delete (char const * const name)
{
  tld_t *tld = tld_find (name);
  node_t *n;

  if (!tld)
    {
      slog (LG_DEBUG, "tld_delete(): called for nonexistant tld: %s", name);

      return;
    }

  slog (LG_DEBUG, "tld_delete(): %s", tld->name);

  n = node_find (tld, &tldlist);
  node_del (n, &tldlist);
  node_free (n);

  sfree (tld->name);
  delete tld;

  cnt.tld--;
}

/*
 * tld_find(char const * const name)
 *
 * Looks up a TLD object.
 *
 * Inputs:
 *     - name of TLD object to look up
 *
 * Outputs:
 *     - on success, the TLD object
 *     - on failure, NULL
 *
 * Side Effects:
 *     - none
 */
tld_t *
tld_find (char const * const name)
{
  tld_t *tld;
  node_t *n;

  if (name == NULL)
    return NULL;

  LIST_FOREACH (n, tldlist.head)
  {
    tld = (tld_t *) n->data;

    if (!strcasecmp (name, tld->name))
      return tld;
  }

  return NULL;
}

/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs
 * vim:ts=8
 * vim:sw=8
 * vim:noexpandtab
 */
Revision:	1.5
Committed:	Sun Sep 9 20:05:52 2007 UTC (19 years ago) by pippijn
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+18 -10 lines
Log Message:	- changed configurations to the c++ stdlib - more #defines to enum - removed getopt.h and link.h from the system as they were unused - reworked logstreams - added an itoa with old syntax - made klines objects - moved some global variables into appropriate classes - fixed boost.foreach's compiler workaround #if's - allow other files to add exceptions with ADD_EXCEPTION - changed mynick_t to c++ object - moved servers.h out of atheme.h - corrected PING from inspircd 1.2
#	User	Rev	Content
1	pippijn	1.1	/*
2			* servers.C: Server and network state tracking.
3	pippijn	1.2	* Rights to this code are documented in doc/pod/license.pod.
4	pippijn	1.1	*
5	pippijn	1.4	* Copyright © 2005-2007 Atheme Project (http://www.atheme.org)
6	pippijn	1.1	*/
7
8	pippijn	1.5	static char const rcsid[] = "$Id: servers.C,v 1.4 2007-08-28 17:08:12 pippijn Exp $";
9	pippijn	1.1
10			#include "atheme.h"
11	pippijn	1.5	#include "servers.h"
12	pippijn	1.1	#include <account/myuser.h>
13
14	pippijn	1.4	typedef std::pair<char const * const, server_t *> server_pair;
15			typedef std::map<char const * const, server_t *, irccase_lt> server_map;
16			server_map sidlist;
17			server_map servlist;
18	pippijn	1.1	list_t tldlist;
19	pippijn	1.4	server_t::callbacks server_t::callback;
20	pippijn	1.1
21			/*
22			* init_servers()
23			*
24			* Initializes the server heap and server/sid DTree structures.
25			*
26			* Inputs:
27			* - nothing
28			*
29			* Outputs:
30			* - nothing
31			*
32			* Side Effects:
33			* - if the heap or dtrees fail to initialize, the program
34			* will abort.
35			*/
36			void
37			init_servers (void)
38			{
39	pippijn	1.4	#if 0
40	pippijn	1.1	serv_heap = BlockHeapCreate (sizeof (server_t), HEAP_SERVER);
41			tld_heap = BlockHeapCreate (sizeof (tld_t), 4);
42	pippijn	1.4	#endif
43	pippijn	1.1	}
44
45			/*
46	pippijn	1.4	* server_add(char const * const name, unsigned int hops, char const * const uplink,
47			* char const * const id, char const * const desc)
48	pippijn	1.1	*
49			* Server object factory.
50			*
51			* Inputs:
52			* - name of server object to create
53			* - amount of hops server has from services
54			* - name of server's uplink or NULL if it's us
55			* - SID of uplink if applicable otherwise NULL
56			* - server's description
57			*
58			* Outputs:
59			* - on success, a new server object
60			*
61			* Side Effects:
62			* - the new server object is added to the server and sid DTree.
63			*/
64			server_t *
65	pippijn	1.4	server_add (char const * const name, unsigned int hops, char const * const uplink, char const * const id, char const * const description)
66	pippijn	1.1	{
67			server_t s, u = NULL;
68	pippijn	1.4	char const *tld;
69			char const *desc = description;
70	pippijn	1.1
71			if (uplink)
72			{
73			if (id != NULL)
74			slog (LG_NETWORK, "server_add(): %s (%s), uplink %s", name, id, uplink);
75			else
76			slog (LG_NETWORK, "server_add(): %s, uplink %s", name, uplink);
77			u = server_find (uplink);
78			}
79			else
80			slog (LG_DEBUG, "server_add(): %s, root", name);
81
82	pippijn	1.4	s = new server_t;
83	pippijn	1.1
84			if (id != NULL)
85			{
86			s->sid = sstrdup (id);
87	pippijn	1.4	sidlist[s->sid] = s;
88	pippijn	1.1	}
89
90			/* check to see if it's hidden */
91			if (!strncmp (desc, "(H)", 3))
92			{
93			s->flags \|= SF_HIDE;
94			desc += 3;
95			if (*desc == ' ')
96			desc++;
97			}
98
99			s->name = sstrdup (name);
100			s->desc = sstrdup (desc);
101			s->hops = hops;
102			s->connected_since = NOW;
103
104	pippijn	1.4	servlist[s->name] = s;
105	pippijn	1.1
106			if (u)
107			{
108			s->uplink = u;
109			node_add (s, node_create (), &u->children);
110			}
111
112			/* tld list for global noticer */
113			tld = strrchr (name, '.');
114
115			if (tld != NULL)
116			{
117			if (!tld_find (tld))
118			tld_add (tld);
119			}
120
121			cnt.server++;
122
123			return s;
124			}
125
126	pippijn	1.5	void
127			server_delete (char const * const name)
128			{
129			server_t *s = server_find (name);
130			server_delete (s);
131
132			if (!s)
133			{
134			slog (LG_DEBUG, "server_delete(): called for nonexistant server: %s", name);
135
136			return;
137			}
138			}
139
140	pippijn	1.1	/*
141	pippijn	1.4	* server_delete(char const * const name)
142	pippijn	1.1	*
143			* Finds and recursively destroys a server object.
144			*
145			* Inputs:
146			* - name of server to find and destroy
147			*
148			* Outputs:
149			* - nothing
150			*
151			* Side Effects:
152			* - all users and servers attached to the target are recursively deleted
153			*/
154			void
155	pippijn	1.5	server_delete (server_t *s, bool force)
156	pippijn	1.1	{
157			server_t *child;
158			user_t *u;
159			node_t n, tn;
160
161	pippijn	1.5	if (!force && s == me.me)
162	pippijn	1.1	{
163			/* Deleting this would cause confusion, so let's not do it.
164			* Some ircds send SQUIT <myname> when we are squitted.
165			* -- jilles
166			*/
167			slog (LG_DEBUG, "server_delete(): tried to delete myself");
168			return;
169			}
170
171			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);
172
173			/* first go through it's users and kill all of them */
174			LIST_FOREACH_SAFE (n, tn, s->userlist.head)
175			{
176			u = (user_t *) n->data;
177			/* This user split, allow bursted logins for the account.
178			* XXX should we do this here?
179			* -- jilles */
180			if (u->myuser != NULL)
181			u->myuser->flags &= ~MU_NOBURSTLOGIN;
182			user_delete (u);
183			}
184
185			LIST_FOREACH_SAFE (n, tn, s->children.head)
186			{
187			child = static_cast<server_t *> (n->data);
188			server_delete (child->name);
189			}
190
191			/* now remove the server */
192	pippijn	1.4	servlist.erase (s->name);
193	pippijn	1.1
194			if (s->sid)
195	pippijn	1.4	sidlist.erase (s->sid);
196	pippijn	1.1
197			if (s->uplink)
198			{
199			n = node_find (s, &s->uplink->children);
200			node_del (n, &s->uplink->children);
201			node_free (n);
202			}
203
204			/* If unconnect semantics SQUIT was confirmed, introduce the jupe
205			* now. This must be after removing the server from the dtrees.
206			* -- jilles */
207			if (s->flags & SF_JUPE_PENDING)
208	pippijn	1.4	phandler->jupe (s->name, "Juped");
209	pippijn	1.1
210	pippijn	1.4	sfree (s->name);
211			sfree (s->desc);
212	pippijn	1.1	if (s->sid)
213	pippijn	1.4	sfree (s->sid);
214	pippijn	1.1
215	pippijn	1.4	delete s;
216	pippijn	1.1
217			cnt.server--;
218			}
219
220			/*
221	pippijn	1.4	* server_find(char const * const name)
222	pippijn	1.1	*
223			* Finds a server object.
224			*
225			* Inputs:
226			* - name of server to find
227			*
228			* Outputs:
229			* - on success, the server object
230			* - on failure, NULL.
231			*
232			* Side Effects:
233			* - none
234			*/
235			server_t *
236	pippijn	1.4	server_find (char const * const name)
237	pippijn	1.1	{
238	pippijn	1.4	server_map::iterator it;
239	pippijn	1.1
240			if (ircd->uses_uid)
241			{
242	pippijn	1.4	it = sidlist.find (name);
243			if (it != sidlist.end ())
244			return it->second;
245	pippijn	1.1	}
246
247	pippijn	1.4	return ((it = servlist.find (name)) == servlist.end ()
248			? NULL
249			: it->second);
250	pippijn	1.1	}
251
252			/*
253	pippijn	1.4	* tld_add(char const * const name)
254	pippijn	1.1	*
255			* TLD object factory.
256			*
257			* Inputs:
258			* - name of TLD to cache as an object
259			*
260			* Outputs:
261			* - on success, a TLD object
262			* - on failure, NULL
263			*
264			* Side Effects:
265			* - the TLD object is registered with the TLD list.
266			*/
267			tld_t *
268	pippijn	1.4	tld_add (char const * const name)
269	pippijn	1.1	{
270			tld_t *tld;
271			node_t *n = node_create ();
272
273			slog (LG_DEBUG, "tld_add(): %s", name);
274
275	pippijn	1.4	tld = new tld_t;
276	pippijn	1.1
277			node_add (tld, n, &tldlist);
278
279			tld->name = sstrdup (name);
280
281			cnt.tld++;
282
283			return tld;
284			}
285
286			/*
287	pippijn	1.4	* tld_delete(char const * const name)
288	pippijn	1.1	*
289			* Destroys a TLD object.
290			*
291			* Inputs:
292			* - name of TLD object to destroy
293			*
294			* Outputs:
295			* - nothing
296			*
297			* Side Effects:
298			* - the TLD object is removed and deregistered from the TLD list.
299			*/
300			void
301	pippijn	1.4	tld_delete (char const * const name)
302	pippijn	1.1	{
303			tld_t *tld = tld_find (name);
304			node_t *n;
305
306			if (!tld)
307			{
308			slog (LG_DEBUG, "tld_delete(): called for nonexistant tld: %s", name);
309
310			return;
311			}
312
313			slog (LG_DEBUG, "tld_delete(): %s", tld->name);
314
315			n = node_find (tld, &tldlist);
316			node_del (n, &tldlist);
317			node_free (n);
318
319	pippijn	1.4	sfree (tld->name);
320			delete tld;
321	pippijn	1.1
322			cnt.tld--;
323			}
324
325			/*
326	pippijn	1.4	* tld_find(char const * const name)
327	pippijn	1.1	*
328			* Looks up a TLD object.
329			*
330			* Inputs:
331			* - name of TLD object to look up
332			*
333			* Outputs:
334			* - on success, the TLD object
335			* - on failure, NULL
336			*
337			* Side Effects:
338			* - none
339			*/
340			tld_t *
341	pippijn	1.4	tld_find (char const * const name)
342	pippijn	1.1	{
343			tld_t *tld;
344			node_t *n;
345
346			if (name == NULL)
347			return NULL;
348
349			LIST_FOREACH (n, tldlist.head)
350			{
351			tld = (tld_t *) n->data;
352
353			if (!strcasecmp (name, tld->name))
354			return tld;
355			}
356
357			return NULL;
358			}
359
360			/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs
361			* vim:ts=8
362			* vim:sw=8
363			* vim:noexpandtab
364			*/