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
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
/*
Miranda IM: the free IM client for Microsoft* Windows*
Copyright 2000-2003 Miranda ICQ/IM project,
all portions of this codebase are copyrighted to the people
listed in contributors.txt.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "commonheaders.h"
extern HANDLE hCacheHeap;
extern SortedList lContacts;
extern HANDLE hLastCachedContact;
INT_PTR GetContactSettingStatic(WPARAM wParam,LPARAM lParam);
void FreeCachedVariant( DBVARIANT* V );
static INT_PTR GetContactCount(WPARAM wParam,LPARAM lParam);
static INT_PTR FindFirstContact(WPARAM wParam,LPARAM lParam);
static INT_PTR FindNextContact(WPARAM wParam,LPARAM lParam);
static INT_PTR DeleteContact(WPARAM wParam,LPARAM lParam);
static INT_PTR AddContact(WPARAM wParam,LPARAM lParam);
static INT_PTR IsDbContact(WPARAM wParam,LPARAM lParam);
static HANDLE hContactDeletedEvent,hContactAddedEvent;
int InitContacts(void)
{
CreateServiceFunction(MS_DB_CONTACT_GETCOUNT,GetContactCount);
CreateServiceFunction(MS_DB_CONTACT_FINDFIRST,FindFirstContact);
CreateServiceFunction(MS_DB_CONTACT_FINDNEXT,FindNextContact);
CreateServiceFunction(MS_DB_CONTACT_DELETE,DeleteContact);
CreateServiceFunction(MS_DB_CONTACT_ADD,AddContact);
CreateServiceFunction(MS_DB_CONTACT_IS,IsDbContact);
hContactDeletedEvent=CreateHookableEvent(ME_DB_CONTACT_DELETED);
hContactAddedEvent=CreateHookableEvent(ME_DB_CONTACT_ADDED);
return 0;
}
void UninitContacts(void)
{
}
DBCachedContactValueList* AddToCachedContactList(HANDLE hContact, int index)
{
DBCachedContactValueList* VL;
VL = (DBCachedContactValueList*)HeapAlloc(hCacheHeap,HEAP_ZERO_MEMORY,sizeof(DBCachedContactValueList));
VL->hContact = hContact;
if (index == -1) li.List_GetIndex(&lContacts,VL,&index);
li.List_Insert(&lContacts,VL,index);
return VL;
}
static INT_PTR GetContactCount(WPARAM wParam,LPARAM lParam)
{
int ret;
EnterCriticalSection(&csDbAccess);
ret=dbHeader.contactCount;
LeaveCriticalSection(&csDbAccess);
return ret;
}
#define proto_module "Protocol"
#define proto_setting "p"
static int CheckProto(HANDLE hContact, const char *proto)
{
static char protobuf[MAX_PATH] = {0};
static DBVARIANT dbv;
static DBCONTACTGETSETTING sVal = {proto_module,proto_setting,&dbv};
dbv.type = DBVT_ASCIIZ;
dbv.pszVal = protobuf;
dbv.cchVal = sizeof(protobuf);
if (GetContactSettingStatic((WPARAM)hContact, (LPARAM )&sVal) != 0
|| (dbv.type != DBVT_ASCIIZ)) return 0;
return !strcmp(protobuf,proto);
}
static INT_PTR FindFirstContact(WPARAM wParam,LPARAM lParam)
{
INT_PTR ret = 0;
EnterCriticalSection(&csDbAccess);
ret = (INT_PTR)dbHeader.ofsFirstContact;
if (lParam && !CheckProto((HANDLE)ret,(const char*)lParam))
ret = FindNextContact((WPARAM)ret,lParam);
LeaveCriticalSection(&csDbAccess);
return ret;
}
static INT_PTR FindNextContact(WPARAM wParam,LPARAM lParam)
{
int index;
struct DBContact *dbc;
DBCachedContactValueList VLtemp, *VL = NULL;
VLtemp.hContact = (HANDLE)wParam;
EnterCriticalSection(&csDbAccess);
while(VLtemp.hContact) {
if ( li.List_GetIndex(&lContacts,&VLtemp,&index)) {
VL = ( DBCachedContactValueList* )lContacts.items[index];
if (VL->hNext != NULL) {
if (!lParam || CheckProto(VL->hNext,(const char*)lParam)) {
LeaveCriticalSection(&csDbAccess);
return (INT_PTR)VL->hNext;
}
else {
VLtemp.hContact = VL->hNext;
continue;
} } }
dbc=(struct DBContact*)DBRead((DWORD)VLtemp.hContact,sizeof(struct DBContact),NULL);
if (dbc->signature!=DBCONTACT_SIGNATURE)
break;
else {
if ( VL == NULL )
VL = AddToCachedContactList(VLtemp.hContact,index);
VL->hNext = (HANDLE)dbc->ofsNext;
if (VL->hNext != NULL && (!lParam || CheckProto(VL->hNext,(const char*)lParam))) {
LeaveCriticalSection(&csDbAccess);
return (INT_PTR)VL->hNext;
}
VLtemp.hContact = VL->hNext;
} }
LeaveCriticalSection(&csDbAccess);
return 0;
}
static INT_PTR DeleteContact(WPARAM wParam,LPARAM lParam)
{
struct DBContact *dbc,*dbcPrev;
DWORD ofsThis,ofsNext,ofsFirstEvent;
struct DBContactSettings *dbcs;
struct DBEvent *dbe;
int index;
if ((HANDLE)wParam==NULL) return 1;
EnterCriticalSection(&csDbAccess);
dbc=(struct DBContact*)DBRead(wParam,sizeof(struct DBContact),NULL);
if(dbc->signature!=DBCONTACT_SIGNATURE) {
LeaveCriticalSection(&csDbAccess);
return 1;
}
if ( (HANDLE)wParam == (HANDLE)dbHeader.ofsUser ) {
LeaveCriticalSection(&csDbAccess);
log0("FATAL: del of user chain attempted.");
return 1;
}
log0("del contact");
LeaveCriticalSection(&csDbAccess);
//call notifier while outside mutex
NotifyEventHooks(hContactDeletedEvent,wParam,0);
//get back in
EnterCriticalSection(&csDbAccess);
{ DBCachedContactValueList VLtemp;
VLtemp.hContact = (HANDLE)wParam;
if ( li.List_GetIndex(&lContacts,&VLtemp,&index))
{
DBCachedContactValueList *VL = ( DBCachedContactValueList* )lContacts.items[index];
DBCachedContactValue* V = VL->first;
while ( V != NULL ) {
DBCachedContactValue* V1 = V->next;
FreeCachedVariant(&V->value);
HeapFree( hCacheHeap, 0, V );
V = V1;
}
HeapFree( hCacheHeap, 0, VL );
if (VLtemp.hContact == hLastCachedContact)
hLastCachedContact = NULL;
li.List_Remove(&lContacts,index);
} }
dbc=(struct DBContact*)DBRead(wParam,sizeof(struct DBContact),NULL);
//delete settings chain
ofsThis=dbc->ofsFirstSettings;
ofsFirstEvent=dbc->ofsFirstEvent;
while(ofsThis) {
dbcs=(struct DBContactSettings*)DBRead(ofsThis,sizeof(struct DBContactSettings),NULL);
ofsNext=dbcs->ofsNext;
DeleteSpace(ofsThis,offsetof(struct DBContactSettings,blob)+dbcs->cbBlob);
ofsThis=ofsNext;
}
//delete event chain
ofsThis=ofsFirstEvent;
while(ofsThis) {
dbe=(struct DBEvent*)DBRead(ofsThis,sizeof(struct DBEvent),NULL);
ofsNext=dbe->ofsNext;
DeleteSpace(ofsThis,offsetof(struct DBEvent,blob)+dbe->cbBlob);
ofsThis=ofsNext;
}
//find previous contact in chain and change ofsNext
dbc=(struct DBContact*)DBRead(wParam,sizeof(struct DBContact),NULL);
if(dbHeader.ofsFirstContact==wParam) {
dbHeader.ofsFirstContact=dbc->ofsNext;
DBWrite(0,&dbHeader,sizeof(dbHeader));
}
else {
ofsNext=dbc->ofsNext;
ofsThis=dbHeader.ofsFirstContact;
dbcPrev=(struct DBContact*)DBRead(ofsThis,sizeof(struct DBContact),NULL);
while(dbcPrev->ofsNext!=wParam) {
if(dbcPrev->ofsNext==0) DatabaseCorruption(NULL);
ofsThis=dbcPrev->ofsNext;
dbcPrev=(struct DBContact*)DBRead(ofsThis,sizeof(struct DBContact),NULL);
}
dbcPrev->ofsNext=ofsNext;
DBWrite(ofsThis,dbcPrev,sizeof(struct DBContact));
{
DBCachedContactValueList VLtemp;
VLtemp.hContact = (HANDLE)ofsThis;
if ( li.List_GetIndex(&lContacts,&VLtemp,&index))
{
DBCachedContactValueList *VL = ( DBCachedContactValueList* )lContacts.items[index];
VL->hNext = ( HANDLE )ofsNext;
} }
}
//delete contact
DeleteSpace(wParam,sizeof(struct DBContact));
//decrement contact count
dbHeader.contactCount--;
DBWrite(0,&dbHeader,sizeof(dbHeader));
DBFlush(0);
//quit
LeaveCriticalSection(&csDbAccess);
return 0;
}
static INT_PTR AddContact(WPARAM wParam,LPARAM lParam)
{
struct DBContact dbc;
DWORD ofsNew;
log0("add contact");
EnterCriticalSection(&csDbAccess);
ofsNew=CreateNewSpace(sizeof(struct DBContact));
dbc.signature=DBCONTACT_SIGNATURE;
dbc.eventCount=0;
dbc.ofsFirstEvent=dbc.ofsLastEvent=0;
dbc.ofsFirstSettings=0;
dbc.ofsNext=dbHeader.ofsFirstContact;
dbc.ofsFirstUnreadEvent=0;
dbc.timestampFirstUnread=0;
dbHeader.ofsFirstContact=ofsNew;
dbHeader.contactCount++;
DBWrite(ofsNew,&dbc,sizeof(struct DBContact));
DBWrite(0,&dbHeader,sizeof(dbHeader));
DBFlush(0);
AddToCachedContactList((HANDLE)ofsNew, -1);
LeaveCriticalSection(&csDbAccess);
NotifyEventHooks(hContactAddedEvent,(WPARAM)ofsNew,0);
return (INT_PTR)ofsNew;
}
static INT_PTR IsDbContact(WPARAM wParam,LPARAM lParam)
{
struct DBContact *dbc;
DWORD ofsContact=(DWORD)wParam;
int ret;
EnterCriticalSection(&csDbAccess);
{
int index;
DBCachedContactValueList VLtemp;
VLtemp.hContact = (HANDLE)wParam;
if ( li.List_GetIndex(&lContacts,&VLtemp,&index))
ret = TRUE;
else {
dbc=(struct DBContact*)DBRead(ofsContact,sizeof(struct DBContact),NULL);
ret=dbc->signature==DBCONTACT_SIGNATURE;
if (ret)
AddToCachedContactList((HANDLE)wParam, index);
} }
LeaveCriticalSection(&csDbAccess);
return ret;
}
|
