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1 | /* | |
2 | * ircd-ratbox: an advanced Internet Relay Chat Daemon(ircd). | |
3 | * monitor.c - Code for server-side notify lists | |
4 | * | |
5 | * Copyright (C) 2005 Lee Hardy <lee -at- leeh.co.uk> | |
6 | * Copyright (C) 2005 ircd-ratbox development team | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions are | |
10 | * met: | |
11 | * | |
12 | * 1.Redistributions of source code must retain the above copyright notice, | |
13 | * this list of conditions and the following disclaimer. | |
14 | * 2.Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in the | |
16 | * documentation and/or other materials provided with the distribution. | |
17 | * 3.The name of the author may not be used to endorse or promote products | |
18 | * derived from this software without specific prior written permission. | |
19 | * | |
20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
21 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
22 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
23 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, | |
24 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
25 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
26 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
28 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
29 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
30 | * POSSIBILITY OF SUCH DAMAGE. | |
31 | * | |
32 | * $Id: monitor.c 3520 2007-06-30 22:15:35Z jilles $ | |
33 | */ | |
34 | #include "stdinc.h" | |
35 | #include "client.h" | |
36 | #include "monitor.h" | |
37 | #include "hash.h" | |
38 | #include "numeric.h" | |
39 | #include "send.h" | |
40 | ||
41 | struct monitor *monitorTable[MONITOR_HASH_SIZE]; | |
42 | static rb_bh *monitor_heap; | |
43 | ||
44 | void | |
45 | init_monitor(void) | |
46 | { | |
47 | monitor_heap = rb_bh_create(sizeof(struct monitor), MONITOR_HEAP_SIZE, "monitor_heap"); | |
48 | } | |
49 | ||
50 | static inline unsigned int | |
51 | hash_monitor_nick(const char *name) | |
52 | { | |
53 | return fnv_hash_upper((const unsigned char *)name, MONITOR_HASH_BITS); | |
54 | } | |
55 | ||
56 | struct monitor * | |
57 | find_monitor(const char *name, int add) | |
58 | { | |
59 | struct monitor *monptr; | |
60 | ||
61 | unsigned int hashv = hash_monitor_nick(name); | |
62 | ||
63 | for(monptr = monitorTable[hashv]; monptr; monptr = monptr->hnext) | |
64 | { | |
65 | if(!irccmp(monptr->name, name)) | |
66 | return monptr; | |
67 | } | |
68 | ||
69 | if(add) | |
70 | { | |
71 | monptr = rb_bh_alloc(monitor_heap); | |
72 | rb_strlcpy(monptr->name, name, sizeof(monptr->name)); | |
73 | ||
74 | monptr->hnext = monitorTable[hashv]; | |
75 | monitorTable[hashv] = monptr; | |
76 | ||
77 | return monptr; | |
78 | } | |
79 | ||
80 | return NULL; | |
81 | } | |
82 | ||
83 | void | |
84 | free_monitor(struct monitor *monptr) | |
85 | { | |
86 | rb_bh_free(monitor_heap, monptr); | |
87 | } | |
88 | ||
89 | /* monitor_signon() | |
90 | * | |
91 | * inputs - client who has just connected | |
92 | * outputs - | |
93 | * side effects - notifies any clients monitoring this nickname that it has | |
94 | * connected to the network | |
95 | */ | |
96 | void | |
97 | monitor_signon(struct Client *client_p) | |
98 | { | |
99 | char buf[USERHOST_REPLYLEN]; | |
100 | struct monitor *monptr = find_monitor(client_p->name, 0); | |
101 | ||
102 | /* noones watching this nick */ | |
103 | if(monptr == NULL) | |
104 | return; | |
105 | ||
106 | rb_snprintf(buf, sizeof(buf), "%s!%s@%s", client_p->name, client_p->username, client_p->host); | |
107 | ||
108 | sendto_monitor(monptr, form_str(RPL_MONONLINE), me.name, "*", buf); | |
109 | } | |
110 | ||
111 | /* monitor_signoff() | |
112 | * | |
113 | * inputs - client who is exiting | |
114 | * outputs - | |
115 | * side effects - notifies any clients monitoring this nickname that it has | |
116 | * left the network | |
117 | */ | |
118 | void | |
119 | monitor_signoff(struct Client *client_p) | |
120 | { | |
121 | struct monitor *monptr = find_monitor(client_p->name, 0); | |
122 | ||
123 | /* noones watching this nick */ | |
124 | if(monptr == NULL) | |
125 | return; | |
126 | ||
127 | sendto_monitor(monptr, form_str(RPL_MONOFFLINE), me.name, "*", | |
128 | client_p->name); | |
129 | } | |
130 | ||
131 | void | |
132 | clear_monitor(struct Client *client_p) | |
133 | { | |
134 | struct monitor *monptr; | |
135 | rb_dlink_node *ptr, *next_ptr; | |
136 | ||
137 | RB_DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->monitor_list.head) | |
138 | { | |
139 | monptr = ptr->data; | |
140 | ||
141 | rb_dlinkFindDestroy(client_p, &monptr->users); | |
142 | rb_free_rb_dlink_node(ptr); | |
143 | } | |
144 | ||
145 | client_p->localClient->monitor_list.head = client_p->localClient->monitor_list.tail = NULL; | |
146 | client_p->localClient->monitor_list.length = 0; | |
147 | } |