Skip to content
This repository
Fetching contributors…

Cannot retrieve contributors at this time

file 223 lines (190 sloc) 5.691 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
/*
* atheme-services: A collection of minimalist IRC services
* uplink.c: Uplink management.
*
* Copyright (c) 2005-2007 Atheme Project (http://www.atheme.org)
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

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

void (*parse) (char *line) = NULL;

mowgli_list_t uplinks;
uplink_t *curr_uplink;

mowgli_heap_t *uplink_heap;

static void uplink_close(connection_t *cptr);

void init_uplinks(void)
{
uplink_heap = sharedheap_get(sizeof(uplink_t));
if (!uplink_heap)
{
slog(LG_INFO, "init_uplinks(): block allocator failed.");
exit(EXIT_FAILURE);
}
}

uplink_t *uplink_add(const char *name, const char *host, const char *send_password, const char *receive_password, const char *vhost, int port)
{
uplink_t *u;

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;
free(u->name);
free(u->host);
free(u->send_pass);
free(u->receive_pass);
if (u->vhost)
free(u->vhost);
}
else
{
slog(LG_INFO, "Duplicate uplink %s.", name);
return NULL;
}
}
else
{
u = mowgli_heap_alloc(uplink_heap);
mowgli_node_add(u, &u->node, &uplinks);
cnt.uplink++;
}

u->name = sstrdup(name);
u->host = sstrdup(host);
u->send_pass = sstrdup(send_password);
u->receive_pass = sstrdup(receive_password);
if (vhost)
u->vhost = sstrdup(vhost);
u->port = port;

return u;
}

void uplink_delete(uplink_t * u)
{
free(u->name);
free(u->host);
free(u->send_pass);
free(u->receive_pass);
if (u->vhost)
free(u->vhost);

mowgli_node_delete(&u->node, &uplinks);
mowgli_heap_free(uplink_heap, u);

cnt.uplink--;
}

uplink_t *uplink_find(const char *name)
{
mowgli_node_t *n;

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

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

return NULL;
}

static void reconn(void *arg)
{
if (me.connected)
return;

uplink_connect();
}

void uplink_connect(void)
{
uplink_t *u;

if (curr_uplink == NULL)
{
if (uplinks.head == NULL)
{
slog(LG_ERROR, "uplink_connect(): no uplinks configured, not connecting to IRC. For IRC usage, make sure to have at least one uplink{} block in your configuration file.");
return;
}
curr_uplink = 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 = 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 = 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, NULL, irc_handle_connect);
if (curr_uplink->conn != NULL)
{
curr_uplink->conn->close_handler = uplink_close;
sendq_set_limit(curr_uplink->conn, config_options.uplink_sendq_limit);
}
else
mowgli_timer_add_once(base_eventloop, "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)
{
channel_t *c;
mowgli_patricia_iteration_state_t state;

mowgli_timer_add_once(base_eventloop, "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 = 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 */
MOWGLI_PATRICIA_FOREACH(c, &state, chanlist)
{
channel_delete(c);
}
/* this leaves me.me and all users on it (i.e. services) */

slog(LG_DEBUG, "uplink_close(): ------------------------- done -------------------------");
}

/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs ts=8 sw=8 noexpandtab
*/
Something went wrong with that request. Please try again.