1 /*
2 * Copyright 2006 Juan Lang
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 */
18 #include <assert.h>
19 #include <stdarg.h>
20 #include "windef.h"
21 #include "winbase.h"
22 #include "wincrypt.h"
23 #include "wine/debug.h"
24 #include "crypt32_private.h"
25
26 WINE_DEFAULT_DEBUG_CHANNEL(context);
27
Context_CreateDataContext(size_t contextSize,const context_vtbl_t * vtbl,WINECRYPT_CERTSTORE * store)28 context_t *Context_CreateDataContext(size_t contextSize, const context_vtbl_t *vtbl, WINECRYPT_CERTSTORE *store)
29 {
30 context_t *context;
31
32 context = CryptMemAlloc(sizeof(context_t) + contextSize);
33 if (!context)
34 return NULL;
35
36 context->properties = ContextPropertyList_Create();
37 if (!context->properties)
38 {
39 CryptMemFree(context);
40 return NULL;
41 }
42
43 context->vtbl = vtbl;
44 context->ref = 1;
45 context->linked = NULL;
46
47 store->vtbl->addref(store);
48 context->store = store;
49
50 TRACE("returning %p\n", context);
51 return context;
52 }
53
Context_CreateLinkContext(unsigned int contextSize,context_t * linked,WINECRYPT_CERTSTORE * store)54 context_t *Context_CreateLinkContext(unsigned int contextSize, context_t *linked, WINECRYPT_CERTSTORE *store)
55 {
56 context_t *context;
57
58 TRACE("(%d, %p)\n", contextSize, linked);
59
60 context = CryptMemAlloc(sizeof(context_t) + contextSize);
61 if (!context)
62 return NULL;
63
64 memcpy(context_ptr(context), context_ptr(linked), contextSize);
65 context->vtbl = linked->vtbl;
66 context->ref = 1;
67 context->linked = linked;
68 context->properties = linked->properties;
69 Context_AddRef(linked);
70
71 store->vtbl->addref(store);
72 context->store = store;
73
74 TRACE("returning %p\n", context);
75 return context;
76 }
77
Context_AddRef(context_t * context)78 void Context_AddRef(context_t *context)
79 {
80 LONG ref = InterlockedIncrement(&context->ref);
81
82 TRACE("(%p) ref=%d\n", context, context->ref);
83
84 if(ref == 1) {
85 /* This is the first external (non-store) reference. Increase store ref cnt. */
86 context->store->vtbl->addref(context->store);
87 }
88 }
89
Context_Free(context_t * context)90 void Context_Free(context_t *context)
91 {
92 TRACE("(%p)\n", context);
93
94 assert(!context->ref);
95
96 if (!context->linked) {
97 ContextPropertyList_Free(context->properties);
98 context->vtbl->free(context);
99 }else {
100 Context_Release(context->linked);
101 }
102
103 CryptMemFree(context);
104 }
105
Context_Release(context_t * context)106 void Context_Release(context_t *context)
107 {
108 LONG ref = InterlockedDecrement(&context->ref);
109
110 TRACE("(%p) ref=%d\n", context, ref);
111 assert(ref >= 0);
112
113 if (!ref) {
114 WINECRYPT_CERTSTORE *store = context->store;
115
116 /* This is the last reference, but the context still may be in a store.
117 * We release our store reference, but leave it up to store to free or keep the context. */
118 store->vtbl->releaseContext(store, context);
119 store->vtbl->release(store, 0);
120 }
121 }
122
Context_CopyProperties(const void * to,const void * from)123 void Context_CopyProperties(const void *to, const void *from)
124 {
125 CONTEXT_PROPERTY_LIST *toProperties, *fromProperties;
126
127 toProperties = context_from_ptr(to)->properties;
128 fromProperties = context_from_ptr(from)->properties;
129 assert(toProperties && fromProperties);
130 ContextPropertyList_Copy(toProperties, fromProperties);
131 }
132