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58964a49 RE |
1 | /* crypto/ex_data.c */ |
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | |
3 | * All rights reserved. | |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include <stdlib.h> | |
ec577822 BM |
61 | #include <openssl/buffer.h> |
62 | #include <openssl/bio.h> | |
63 | #include <openssl/lhash.h> | |
58964a49 RE |
64 | #include "cryptlib.h" |
65 | ||
dd9d233e DSH |
66 | int CRYPTO_get_ex_new_index(int idx, STACK_OF(CRYPTO_EX_DATA_FUNCS) **skp, long argl, void *argp, |
67 | CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) | |
58964a49 | 68 | { |
dfeab068 | 69 | int ret= -1; |
58964a49 RE |
70 | CRYPTO_EX_DATA_FUNCS *a; |
71 | ||
dfeab068 | 72 | MemCheck_off(); |
58964a49 | 73 | if (*skp == NULL) |
dd9d233e | 74 | *skp=sk_CRYPTO_EX_DATA_FUNCS_new_null(); |
58964a49 RE |
75 | if (*skp == NULL) |
76 | { | |
77 | CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE); | |
dfeab068 | 78 | goto err; |
58964a49 | 79 | } |
26a3a48d | 80 | a=(CRYPTO_EX_DATA_FUNCS *)OPENSSL_malloc(sizeof(CRYPTO_EX_DATA_FUNCS)); |
58964a49 RE |
81 | if (a == NULL) |
82 | { | |
83 | CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE); | |
dfeab068 | 84 | goto err; |
58964a49 RE |
85 | } |
86 | a->argl=argl; | |
87 | a->argp=argp; | |
88 | a->new_func=new_func; | |
89 | a->dup_func=dup_func; | |
90 | a->free_func=free_func; | |
dd9d233e | 91 | while (sk_CRYPTO_EX_DATA_FUNCS_num(*skp) <= idx) |
58964a49 | 92 | { |
dd9d233e | 93 | if (!sk_CRYPTO_EX_DATA_FUNCS_push(*skp,NULL)) |
58964a49 RE |
94 | { |
95 | CRYPTOerr(CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX,ERR_R_MALLOC_FAILURE); | |
26a3a48d | 96 | OPENSSL_free(a); |
dfeab068 | 97 | goto err; |
58964a49 RE |
98 | } |
99 | } | |
dd9d233e | 100 | sk_CRYPTO_EX_DATA_FUNCS_set(*skp,idx, a); |
dfeab068 RE |
101 | ret=idx; |
102 | err: | |
103 | MemCheck_on(); | |
58964a49 RE |
104 | return(idx); |
105 | } | |
106 | ||
dd9d233e | 107 | int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int idx, void *val) |
58964a49 RE |
108 | { |
109 | int i; | |
110 | ||
111 | if (ad->sk == NULL) | |
112 | { | |
113 | if ((ad->sk=sk_new_null()) == NULL) | |
114 | { | |
115 | CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE); | |
116 | return(0); | |
117 | } | |
118 | } | |
119 | i=sk_num(ad->sk); | |
120 | ||
121 | while (i <= idx) | |
122 | { | |
123 | if (!sk_push(ad->sk,NULL)) | |
124 | { | |
125 | CRYPTOerr(CRYPTO_F_CRYPTO_SET_EX_DATA,ERR_R_MALLOC_FAILURE); | |
126 | return(0); | |
127 | } | |
128 | i++; | |
129 | } | |
e84240d4 | 130 | sk_set(ad->sk,idx,val); |
58964a49 RE |
131 | return(1); |
132 | } | |
133 | ||
dd9d233e | 134 | void *CRYPTO_get_ex_data(CRYPTO_EX_DATA *ad, int idx) |
58964a49 RE |
135 | { |
136 | if (ad->sk == NULL) | |
137 | return(0); | |
138 | else if (idx >= sk_num(ad->sk)) | |
139 | return(0); | |
140 | else | |
141 | return(sk_value(ad->sk,idx)); | |
142 | } | |
143 | ||
49b81422 | 144 | /* The callback is called with the 'object', which is the original data object |
58964a49 RE |
145 | * being duplicated, a pointer to the |
146 | * 'new' object to be inserted, the index, and the argi/argp | |
147 | */ | |
dd9d233e | 148 | int CRYPTO_dup_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, CRYPTO_EX_DATA *to, |
6b691a5c | 149 | CRYPTO_EX_DATA *from) |
58964a49 RE |
150 | { |
151 | int i,j,m,r; | |
152 | CRYPTO_EX_DATA_FUNCS *mm; | |
153 | char *from_d; | |
154 | ||
155 | if (meth == NULL) return(1); | |
156 | if (from->sk == NULL) return(1); | |
dd9d233e | 157 | m=sk_CRYPTO_EX_DATA_FUNCS_num(meth); |
58964a49 RE |
158 | j=sk_num(from->sk); |
159 | for (i=0; i<j; i++) | |
160 | { | |
161 | from_d=CRYPTO_get_ex_data(from,i); | |
162 | if (i < m) | |
163 | { | |
dd9d233e | 164 | mm=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i); |
58964a49 RE |
165 | if (mm->dup_func != NULL) |
166 | r=mm->dup_func(to,from,(char **)&from_d,i, | |
167 | mm->argl,mm->argp); | |
168 | } | |
169 | CRYPTO_set_ex_data(to,i,from_d); | |
170 | } | |
171 | return(1); | |
172 | } | |
173 | ||
174 | /* Call each free callback */ | |
dd9d233e | 175 | void CRYPTO_free_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, void *obj, CRYPTO_EX_DATA *ad) |
58964a49 RE |
176 | { |
177 | CRYPTO_EX_DATA_FUNCS *m; | |
dd9d233e | 178 | void *ptr; |
58964a49 RE |
179 | int i,max; |
180 | ||
181 | if (meth != NULL) | |
182 | { | |
dd9d233e | 183 | max=sk_CRYPTO_EX_DATA_FUNCS_num(meth); |
58964a49 RE |
184 | for (i=0; i<max; i++) |
185 | { | |
dd9d233e | 186 | m=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i); |
58964a49 RE |
187 | if ((m != NULL) && (m->free_func != NULL)) |
188 | { | |
189 | ptr=CRYPTO_get_ex_data(ad,i); | |
190 | m->free_func(obj,ptr,ad,i,m->argl,m->argp); | |
191 | } | |
192 | } | |
193 | } | |
194 | if (ad->sk != NULL) | |
195 | { | |
196 | sk_free(ad->sk); | |
197 | ad->sk=NULL; | |
198 | } | |
199 | } | |
200 | ||
dd9d233e | 201 | void CRYPTO_new_ex_data(STACK_OF(CRYPTO_EX_DATA_FUNCS) *meth, void *obj, CRYPTO_EX_DATA *ad) |
58964a49 RE |
202 | { |
203 | CRYPTO_EX_DATA_FUNCS *m; | |
dd9d233e | 204 | void *ptr; |
58964a49 RE |
205 | int i,max; |
206 | ||
207 | ad->sk=NULL; | |
208 | if (meth != NULL) | |
209 | { | |
dd9d233e | 210 | max=sk_CRYPTO_EX_DATA_FUNCS_num(meth); |
58964a49 RE |
211 | for (i=0; i<max; i++) |
212 | { | |
dd9d233e | 213 | m=sk_CRYPTO_EX_DATA_FUNCS_value(meth,i); |
58964a49 RE |
214 | if ((m != NULL) && (m->new_func != NULL)) |
215 | { | |
216 | ptr=CRYPTO_get_ex_data(ad,i); | |
217 | m->new_func(obj,ptr,ad,i,m->argl,m->argp); | |
218 | } | |
219 | } | |
220 | } | |
221 | } | |
222 | ||
dd9d233e | 223 | IMPLEMENT_STACK_OF(CRYPTO_EX_DATA_FUNCS) |