ermyth/src/uplink.C

/*
 * uplink.C: Uplink management.
 * 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: uplink.C,v 1.4 2007-08-28 17:08:12 pippijn Exp $";

#include <boost/foreach.hpp>

#include "atheme.h"
#include "datastream.h"
#include "uplink.h"

list_t uplinks;
uplink_t *curr_uplink;

static void uplink_close (connection_t *cptr);

void
init_uplinks (void)
{
#if 0
  uplink_heap = BlockHeapCreate (sizeof (uplink_t), 4);
#endif
}

uplink_t *
uplink_add (char *name, char *host, char *password, char *vhost, int port)
{
  uplink_t *u;
  node_t *n;

  slog (LG_DEBUG, "uplink_add(): %s -> %s:%d", me.name, name, port);

  if ((u = uplink_find (name)))
    {
      if (u->flags & UPF_ILLEGAL)
        {
          u->flags &= ~UPF_ILLEGAL;
          sfree (u->name);
          sfree (u->host);
          sfree (u->pass);
          sfree (u->vhost);
        }
      else
        {
          slog (LG_INFO, "Duplicate uplink %s.", name);
          return NULL;
        }
    }
  else
    {
      u = new uplink_t;
      n = node_create ();
      u->node = n;
      node_add (u, n, &uplinks);
      cnt.uplink++;
    }

  u->name = sstrdup (name);
  u->host = sstrdup (host);
  u->pass = sstrdup (password);
  if (vhost)
    u->vhost = sstrdup (vhost);
  else
    u->vhost = sstrdup ("0.0.0.0");
  u->port = port;

  return u;
}

void
uplink_delete (uplink_t *u)
{
  node_t *n = node_find (u, &uplinks);

  sfree (u->name);
  sfree (u->host);
  sfree (u->pass);
  sfree (u->vhost);

  node_del (n, &uplinks);
  node_free (n);

  delete u;
  cnt.uplink--;
}

uplink_t *
uplink_find (char *name)
{
  node_t *n;

  LIST_FOREACH (n, uplinks.head)
  {
    uplink_t *u = static_cast<uplink_t *> (n->data);

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

  return NULL;
}

void
uplink_connect (void)
{
  uplink_t *u;

  if (curr_uplink == NULL)
    {
      if (uplinks.head == NULL)
        {
          slog (LG_ERROR, "uplink_connect(): no uplinks configured, exiting. Make sure to have at least one uplink{} block in your configuration file.");
          exit (EXIT_FAILURE);
        }
      curr_uplink = static_cast<uplink_t *> (uplinks.head->data);
      slog (LG_INFO, "uplink_connect(): connecting to first entry %s[%s]:%d.", curr_uplink->name, curr_uplink->host, curr_uplink->port);
    }
  else if (curr_uplink->node->next)
    {
      u = static_cast<uplink_t *> (curr_uplink->node->next->data);

      curr_uplink = u;
      slog (LG_INFO, "uplink_connect(): trying alternate uplink %s[%s]:%d", curr_uplink->name, curr_uplink->host, curr_uplink->port);
    }
  else
    {
      curr_uplink = static_cast<uplink_t *> (uplinks.head->data);
      slog (LG_INFO, "uplink_connect(): trying again first entry %s[%s]:%d", curr_uplink->name, curr_uplink->host, curr_uplink->port);
    }

  u = curr_uplink;

  curr_uplink->conn = connection_open_tcp (u->host, u->vhost, u->port, recvq_put, sendq_flush);
  if (curr_uplink->conn != NULL)
    curr_uplink->conn->close_handler = uplink_close;
  else
    event_add_once ("reconn", reconn, NULL, me.recontime);
}

/*
 * uplink_close()
 * 
 * inputs:
 *       connection pointer of current uplink
 *       triggered by callback close_handler
 *
 * outputs:
 *       none
 *
 * side effects:
 *       reconnection is scheduled
 *       uplink marked dead
 *       uplink deleted if it had been removed from configuration
 */
static void
uplink_close (connection_t *cptr)
{
  event_add_once ("reconn", reconn, NULL, me.recontime);

  me.connected = false;

  if (curr_uplink->flags & UPF_ILLEGAL)
    {
      slog (LG_INFO, "uplink_close(): %s was removed from configuration, deleting", curr_uplink->name);
      uplink_delete (curr_uplink);
      if (uplinks.head == NULL)
        {
          slog (LG_ERROR, "uplink_close(): last uplink deleted, exiting.");
          exit (EXIT_FAILURE);
        }
      curr_uplink = static_cast<uplink_t *> (uplinks.head->data);
    }
  curr_uplink->conn = NULL;

  slog (LG_DEBUG, "uplink_close(): ----------------------- clearing -----------------------");

  /* we have to kill everything.
   * we do not clear users here because when you delete a server,
   * it deletes its users
   */
  if (me.actual != NULL)
    server_delete (me.actual);
  me.actual = NULL;
  /* remove all the channels left */
  foreach (channel_pair &cp, chanlist)
    channel_delete (cp.second);
  /* this leaves me.me and all users on it (i.e. services) */

  slog (LG_DEBUG, "uplink_close(): ------------------------- done -------------------------");
}
Revision:	1.5
Committed:	Thu Aug 30 06:57:25 2007 UTC (16 years, 9 months ago) by pippijn
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+5 -8 lines
Log Message:	- chanlist to std::map
#	User	Rev	Content
1	pippijn	1.1	/*
2			* uplink.C: Uplink management.
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: uplink.C,v 1.4 2007-08-28 17:08:12 pippijn Exp $";
9
10			#include <boost/foreach.hpp>
11	pippijn	1.1
12			#include "atheme.h"
13			#include "datastream.h"
14			#include "uplink.h"
15
16			list_t uplinks;
17			uplink_t *curr_uplink;
18
19			static void uplink_close (connection_t *cptr);
20
21			void
22			init_uplinks (void)
23			{
24	pippijn	1.4	#if 0
25	pippijn	1.1	uplink_heap = BlockHeapCreate (sizeof (uplink_t), 4);
26	pippijn	1.4	#endif
27	pippijn	1.1	}
28
29			uplink_t *
30			uplink_add (char name, char host, char password, char vhost, int port)
31			{
32			uplink_t *u;
33			node_t *n;
34
35			slog (LG_DEBUG, "uplink_add(): %s -> %s:%d", me.name, name, port);
36
37			if ((u = uplink_find (name)))
38			{
39			if (u->flags & UPF_ILLEGAL)
40			{
41			u->flags &= ~UPF_ILLEGAL;
42	pippijn	1.4	sfree (u->name);
43			sfree (u->host);
44			sfree (u->pass);
45			sfree (u->vhost);
46	pippijn	1.1	}
47			else
48			{
49			slog (LG_INFO, "Duplicate uplink %s.", name);
50			return NULL;
51			}
52			}
53			else
54			{
55	pippijn	1.4	u = new uplink_t;
56	pippijn	1.1	n = node_create ();
57			u->node = n;
58			node_add (u, n, &uplinks);
59			cnt.uplink++;
60			}
61
62			u->name = sstrdup (name);
63			u->host = sstrdup (host);
64			u->pass = sstrdup (password);
65			if (vhost)
66			u->vhost = sstrdup (vhost);
67			else
68			u->vhost = sstrdup ("0.0.0.0");
69			u->port = port;
70
71			return u;
72			}
73
74			void
75			uplink_delete (uplink_t *u)
76			{
77			node_t *n = node_find (u, &uplinks);
78
79	pippijn	1.4	sfree (u->name);
80			sfree (u->host);
81			sfree (u->pass);
82			sfree (u->vhost);
83	pippijn	1.1
84			node_del (n, &uplinks);
85			node_free (n);
86
87	pippijn	1.4	delete u;
88	pippijn	1.1	cnt.uplink--;
89			}
90
91			uplink_t *
92			uplink_find (char *name)
93			{
94			node_t *n;
95
96			LIST_FOREACH (n, uplinks.head)
97			{
98			uplink_t u = static_cast<uplink_t > (n->data);
99
100			if (!strcasecmp (u->name, name))
101			return u;
102			}
103
104			return NULL;
105			}
106
107			void
108			uplink_connect (void)
109			{
110			uplink_t *u;
111
112			if (curr_uplink == NULL)
113			{
114			if (uplinks.head == NULL)
115			{
116			slog (LG_ERROR, "uplink_connect(): no uplinks configured, exiting. Make sure to have at least one uplink{} block in your configuration file.");
117			exit (EXIT_FAILURE);
118			}
119			curr_uplink = static_cast<uplink_t *> (uplinks.head->data);
120			slog (LG_INFO, "uplink_connect(): connecting to first entry %s[%s]:%d.", curr_uplink->name, curr_uplink->host, curr_uplink->port);
121			}
122			else if (curr_uplink->node->next)
123			{
124			u = static_cast<uplink_t *> (curr_uplink->node->next->data);
125
126			curr_uplink = u;
127			slog (LG_INFO, "uplink_connect(): trying alternate uplink %s[%s]:%d", curr_uplink->name, curr_uplink->host, curr_uplink->port);
128			}
129			else
130			{
131			curr_uplink = static_cast<uplink_t *> (uplinks.head->data);
132			slog (LG_INFO, "uplink_connect(): trying again first entry %s[%s]:%d", curr_uplink->name, curr_uplink->host, curr_uplink->port);
133			}
134
135			u = curr_uplink;
136
137			curr_uplink->conn = connection_open_tcp (u->host, u->vhost, u->port, recvq_put, sendq_flush);
138			if (curr_uplink->conn != NULL)
139			curr_uplink->conn->close_handler = uplink_close;
140			else
141			event_add_once ("reconn", reconn, NULL, me.recontime);
142			}
143
144			/*
145			* uplink_close()
146			*
147			* inputs:
148			* connection pointer of current uplink
149			* triggered by callback close_handler
150			*
151			* outputs:
152			* none
153			*
154			* side effects:
155			* reconnection is scheduled
156			* uplink marked dead
157			* uplink deleted if it had been removed from configuration
158			*/
159			static void
160			uplink_close (connection_t *cptr)
161			{
162			event_add_once ("reconn", reconn, NULL, me.recontime);
163
164			me.connected = false;
165
166			if (curr_uplink->flags & UPF_ILLEGAL)
167			{
168			slog (LG_INFO, "uplink_close(): %s was removed from configuration, deleting", curr_uplink->name);
169			uplink_delete (curr_uplink);
170			if (uplinks.head == NULL)
171			{
172			slog (LG_ERROR, "uplink_close(): last uplink deleted, exiting.");
173			exit (EXIT_FAILURE);
174			}
175			curr_uplink = static_cast<uplink_t *> (uplinks.head->data);
176			}
177			curr_uplink->conn = NULL;
178
179			slog (LG_DEBUG, "uplink_close(): ----------------------- clearing -----------------------");
180
181			/* we have to kill everything.
182			* we do not clear users here because when you delete a server,
183			* it deletes its users
184			*/
185			if (me.actual != NULL)
186			server_delete (me.actual);
187			me.actual = NULL;
188			/* remove all the channels left */
189	pippijn	1.5	foreach (channel_pair &cp, chanlist)
190			channel_delete (cp.second);
191	pippijn	1.1	/* this leaves me.me and all users on it (i.e. services) */
192
193			slog (LG_DEBUG, "uplink_close(): ------------------------- done -------------------------");
194			}