25
|
1 /* |
|
2 * This program is free software; you can redistribute it and/or modify |
|
3 * it under the terms of the GNU General Public License as published by |
|
4 * the Free Software Foundation; either version 2 of the License, or |
|
5 * (at your option) any later version. |
|
6 * |
|
7 * This program is distributed in the hope that it will be useful, |
|
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
10 * GNU General Public License for more details. |
|
11 * |
|
12 * You should have received a copy of the GNU General Public License |
|
13 * along with this program; if not, write to the Free Software |
|
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
|
15 * |
|
16 * Jabber |
|
17 * Copyright (C) 1998-1999 The Jabber Team http://jabber.org/ |
|
18 */ |
|
19 |
|
20 #include "jabber.h" |
|
21 |
|
22 /* these aren't the most efficient things in the world, a hash optimized for tiny spaces would be far better */ |
|
23 |
|
24 ppdb _ppdb_new(pool p, jid id) |
|
25 { |
|
26 ppdb ret; |
|
27 ret = pmalloc(p,sizeof(_ppdb)); |
|
28 ret->p = p; |
|
29 ret->pri = -1; |
|
30 ret->next = NULL; |
|
31 ret->user = NULL; |
|
32 ret->x = NULL; |
|
33 ret->id = jid_new(p,jid_full(id)); |
|
34 |
|
35 return ret; |
|
36 } |
|
37 |
|
38 ppdb _ppdb_get(ppdb db, jid id) |
|
39 { |
|
40 ppdb cur; |
|
41 |
|
42 if(db == NULL || id == NULL) return NULL; |
|
43 |
|
44 for(cur = db->next; cur != NULL; cur = cur->next) |
|
45 if(jid_cmp(cur->id,id) == 0) return cur; |
|
46 |
|
47 return NULL; |
|
48 } |
|
49 |
|
50 ppdb ppdb_insert(ppdb db, jid id, xmlnode x) |
|
51 { |
|
52 char *res; |
|
53 ppdb cur, curu; |
|
54 pool p; |
|
55 |
|
56 if(id == NULL || id->server == NULL || x == NULL) |
|
57 return db; |
|
58 |
|
59 /* new ppdb list dummy holder */ |
|
60 if(db == NULL) |
|
61 { |
|
62 p = pool_heap(1024); |
|
63 db = _ppdb_new(p,id); |
|
64 } |
|
65 |
|
66 cur = _ppdb_get(db,id); |
|
67 |
|
68 /* just update it */ |
|
69 if(cur != NULL) |
|
70 { |
|
71 xmlnode_free(cur->x); |
|
72 cur->x = xmlnode_dup(x); |
|
73 cur->pri = jutil_priority(x); |
|
74 return db; |
|
75 } |
|
76 |
|
77 /* make an entry for it */ |
|
78 cur = _ppdb_new(db->p,id); |
|
79 cur->x = xmlnode_dup(x); |
|
80 cur->pri = jutil_priority(x); |
|
81 cur->next = db->next; |
|
82 db->next = cur; |
|
83 |
|
84 /* this is a presence from a resource, make an entry for just the user */ |
|
85 if(id->user != NULL && id->resource != NULL) |
|
86 { |
|
87 /* modify the id to just user@host */ |
|
88 res = id->resource; |
|
89 jid_set(id,NULL,JID_RESOURCE); |
|
90 curu = _ppdb_get(db,id); |
|
91 |
|
92 /* no user entry, make one */ |
|
93 if(curu == NULL) |
|
94 { |
|
95 curu = _ppdb_new(db->p,id); |
|
96 curu->next = db->next; |
|
97 db->next = curu; |
|
98 } |
|
99 |
|
100 /* restore the id */ |
|
101 jid_set(id,res,JID_RESOURCE); |
|
102 |
|
103 /* insert this resource into the user list */ |
|
104 cur->user = curu->user; |
|
105 curu->user = cur; |
|
106 } |
|
107 |
|
108 return db; |
|
109 } |
|
110 |
|
111 xmlnode ppdb_primary(ppdb db, jid id) |
|
112 { |
|
113 ppdb cur, top; |
|
114 |
|
115 if(db == NULL || id == NULL) return NULL; |
|
116 |
|
117 cur = _ppdb_get(db,id); |
|
118 |
|
119 if(cur == NULL) return NULL; |
|
120 |
|
121 /* not user@host check, just return */ |
|
122 if(id->user == NULL || id->resource != NULL) return cur->x; |
|
123 |
|
124 top = cur; |
|
125 for(cur = cur->user; cur != NULL; cur = cur->user) |
|
126 if(cur->pri >= top->pri) top = cur; |
|
127 |
|
128 if(top != NULL && top->pri >= 0) return top->x; |
|
129 |
|
130 return NULL; |
|
131 } |
|
132 |
|
133 /* return the presence for the id, successive calls return all of the known resources for a user@host address */ |
|
134 xmlnode ppdb_get(ppdb db, jid id) |
|
135 { |
|
136 static ppdb last = NULL; |
|
137 ppdb cur; |
|
138 |
|
139 if(db == NULL || id == NULL) return NULL; |
|
140 |
|
141 /* MODE: if this is NOT just user@host addy, return just the single entry */ |
|
142 if(id->user == NULL || id->resource != NULL) |
|
143 { |
|
144 /* we were just here, return now */ |
|
145 if(last != NULL) |
|
146 { |
|
147 last = NULL; |
|
148 return NULL; |
|
149 } |
|
150 |
|
151 last = _ppdb_get(db,id); |
|
152 if(last != NULL) |
|
153 return last->x; |
|
154 else |
|
155 return NULL; |
|
156 } |
|
157 |
|
158 /* handle looping for user@host */ |
|
159 |
|
160 /* we're already in the loop */ |
|
161 if(last != NULL) |
|
162 { |
|
163 /* this is the last entry in the list */ |
|
164 if(last->user == NULL) |
|
165 { |
|
166 last = NULL; |
|
167 return NULL; |
|
168 } |
|
169 |
|
170 last = last->user; |
|
171 return last->x; |
|
172 } |
|
173 |
|
174 /* start a new loop */ |
|
175 cur = _ppdb_get(db,id); |
|
176 |
|
177 if(cur == NULL) return NULL; |
|
178 |
|
179 last = cur->user; |
|
180 if(last != NULL) |
|
181 return last->x; |
|
182 else |
|
183 return NULL; |
|
184 } |
|
185 |
|
186 |
|
187 void ppdb_free(ppdb db) |
|
188 { |
|
189 ppdb cur; |
|
190 |
|
191 if(db == NULL) return; |
|
192 |
|
193 for(cur = db; cur != NULL; cur = cur->next) |
|
194 xmlnode_free(cur->x); |
|
195 |
|
196 pool_free(db->p); |
|
197 } |
|
198 |