1/*
2 * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License").  You may not use
5 * this file except in compliance with the License.  You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include <string.h>
12#include <stdlib.h>
13#include <openssl/crypto.h>
14
15#include "testutil.h"
16
17static long saved_argl;
18static void *saved_argp;
19static int saved_idx;
20static int saved_idx2;
21static int saved_idx3;
22static int gbl_result;
23
24/*
25 * SIMPLE EX_DATA IMPLEMENTATION
26 * Apps explicitly set/get ex_data as needed
27 */
28
29static void exnew(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
30          int idx, long argl, void *argp)
31{
32    if (!TEST_int_eq(idx, saved_idx)
33        || !TEST_long_eq(argl, saved_argl)
34        || !TEST_ptr_eq(argp, saved_argp)
35        || !TEST_ptr_null(ptr))
36        gbl_result = 0;
37}
38
39static int exdup(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from,
40          void **from_d, int idx, long argl, void *argp)
41{
42    if (!TEST_int_eq(idx, saved_idx)
43        || !TEST_long_eq(argl, saved_argl)
44        || !TEST_ptr_eq(argp, saved_argp)
45        || !TEST_ptr(from_d))
46        gbl_result = 0;
47    return 1;
48}
49
50static void exfree(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
51            int idx, long argl, void *argp)
52{
53    if (!TEST_int_eq(idx, saved_idx)
54        || !TEST_long_eq(argl, saved_argl)
55        || !TEST_ptr_eq(argp, saved_argp))
56        gbl_result = 0;
57}
58
59/*
60 * PRE-ALLOCATED EX_DATA IMPLEMENTATION
61 * Extended data structure is allocated in exnew2/freed in exfree2
62 * Data is stored inside extended data structure
63 */
64
65typedef struct myobj_ex_data_st {
66    char *hello;
67    int new;
68    int dup;
69} MYOBJ_EX_DATA;
70
71static void exnew2(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
72          int idx, long argl, void *argp)
73{
74    MYOBJ_EX_DATA *ex_data = OPENSSL_zalloc(sizeof(*ex_data));
75
76    if (!TEST_true(idx == saved_idx2 || idx == saved_idx3)
77        || !TEST_long_eq(argl, saved_argl)
78        || !TEST_ptr_eq(argp, saved_argp)
79        || !TEST_ptr_null(ptr)
80        || !TEST_ptr(ex_data)
81        || !TEST_true(CRYPTO_set_ex_data(ad, idx, ex_data))) {
82        gbl_result = 0;
83        OPENSSL_free(ex_data);
84    } else {
85        ex_data->new = 1;
86    }
87}
88
89static int exdup2(CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from,
90          void **from_d, int idx, long argl, void *argp)
91{
92    MYOBJ_EX_DATA **update_ex_data = (MYOBJ_EX_DATA**)from_d;
93    MYOBJ_EX_DATA *ex_data = NULL;
94
95    if (!TEST_true(idx == saved_idx2 || idx == saved_idx3)
96        || !TEST_long_eq(argl, saved_argl)
97        || !TEST_ptr_eq(argp, saved_argp)
98        || !TEST_ptr(from_d)
99        || !TEST_ptr(*update_ex_data)
100        || !TEST_ptr(ex_data = CRYPTO_get_ex_data(to, idx))
101        || !TEST_true(ex_data->new)) {
102        gbl_result = 0;
103    } else {
104        /* Copy hello over */
105        ex_data->hello = (*update_ex_data)->hello;
106        /* indicate this is a dup */
107        ex_data->dup = 1;
108        /* Keep my original ex_data */
109        *update_ex_data = ex_data;
110    }
111    return 1;
112}
113
114static void exfree2(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
115            int idx, long argl, void *argp)
116{
117    MYOBJ_EX_DATA *ex_data = CRYPTO_get_ex_data(ad, idx);
118
119    if (!TEST_true(idx == saved_idx2 || idx == saved_idx3)
120        || !TEST_long_eq(argl, saved_argl)
121        || !TEST_ptr_eq(argp, saved_argp)
122        || !TEST_true(CRYPTO_set_ex_data(ad, idx, NULL)))
123        gbl_result = 0;
124    OPENSSL_free(ex_data);
125}
126
127typedef struct myobj_st {
128    CRYPTO_EX_DATA ex_data;
129    int id;
130    int st;
131} MYOBJ;
132
133static MYOBJ *MYOBJ_new(void)
134{
135    static int count = 0;
136    MYOBJ *obj = OPENSSL_malloc(sizeof(*obj));
137
138    if (obj != NULL) {
139        obj->id = ++count;
140        obj->st = CRYPTO_new_ex_data(CRYPTO_EX_INDEX_APP, obj, &obj->ex_data);
141    }
142    return obj;
143}
144
145static void MYOBJ_sethello(MYOBJ *obj, char *cp)
146{
147    obj->st = CRYPTO_set_ex_data(&obj->ex_data, saved_idx, cp);
148    if (!TEST_int_eq(obj->st, 1))
149        gbl_result = 0;
150}
151
152static char *MYOBJ_gethello(MYOBJ *obj)
153{
154    return CRYPTO_get_ex_data(&obj->ex_data, saved_idx);
155}
156
157static void MYOBJ_sethello2(MYOBJ *obj, char *cp)
158{
159    MYOBJ_EX_DATA* ex_data = CRYPTO_get_ex_data(&obj->ex_data, saved_idx2);
160
161    if (TEST_ptr(ex_data))
162        ex_data->hello = cp;
163    else
164        obj->st = gbl_result = 0;
165}
166
167static char *MYOBJ_gethello2(MYOBJ *obj)
168{
169    MYOBJ_EX_DATA* ex_data = CRYPTO_get_ex_data(&obj->ex_data, saved_idx2);
170
171    if (TEST_ptr(ex_data))
172        return ex_data->hello;
173
174    obj->st = gbl_result = 0;
175    return NULL;
176}
177
178static void MYOBJ_allochello3(MYOBJ *obj, char *cp)
179{
180    MYOBJ_EX_DATA* ex_data = NULL;
181
182    if (TEST_ptr_null(ex_data = CRYPTO_get_ex_data(&obj->ex_data, saved_idx3))
183        && TEST_true(CRYPTO_alloc_ex_data(CRYPTO_EX_INDEX_APP, obj,
184                                          &obj->ex_data, saved_idx3))
185        && TEST_ptr(ex_data = CRYPTO_get_ex_data(&obj->ex_data, saved_idx3)))
186        ex_data->hello = cp;
187    else
188        obj->st = gbl_result = 0;
189}
190
191static char *MYOBJ_gethello3(MYOBJ *obj)
192{
193    MYOBJ_EX_DATA* ex_data = CRYPTO_get_ex_data(&obj->ex_data, saved_idx3);
194
195    if (TEST_ptr(ex_data))
196        return ex_data->hello;
197
198    obj->st = gbl_result = 0;
199    return NULL;
200}
201
202static void MYOBJ_free(MYOBJ *obj)
203{
204    if (obj != NULL) {
205        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_APP, obj, &obj->ex_data);
206        OPENSSL_free(obj);
207    }
208}
209
210static MYOBJ *MYOBJ_dup(MYOBJ *in)
211{
212    MYOBJ *obj = MYOBJ_new();
213
214    if (obj != NULL)
215        obj->st |= CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_APP, &obj->ex_data,
216                                     &in->ex_data);
217    return obj;
218}
219
220static int test_exdata(void)
221{
222    MYOBJ *t1 = NULL, *t2 = NULL, *t3 = NULL;
223    MYOBJ_EX_DATA *ex_data = NULL;
224    const char *cp;
225    char *p;
226    int res = 0;
227
228    gbl_result = 1;
229
230    if (!TEST_ptr(p = OPENSSL_strdup("hello world")))
231        return 0;
232    saved_argl = 21;
233    if (!TEST_ptr(saved_argp = OPENSSL_malloc(1)))
234        goto err;
235    saved_idx = CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_APP,
236                                        saved_argl, saved_argp,
237                                        exnew, exdup, exfree);
238    saved_idx2 = CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_APP,
239                                         saved_argl, saved_argp,
240                                         exnew2, exdup2, exfree2);
241    t1 = MYOBJ_new();
242    t2 = MYOBJ_new();
243    if (!TEST_int_eq(t1->st, 1) || !TEST_int_eq(t2->st, 1))
244        goto err;
245    if (!TEST_ptr(CRYPTO_get_ex_data(&t1->ex_data, saved_idx2)))
246        goto err;
247
248    /*
249     * saved_idx3 differs from other indexes by being created after the exdata
250     * was initialized.
251     */
252    saved_idx3 = CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_APP,
253                                         saved_argl, saved_argp,
254                                         exnew2, exdup2, exfree2);
255    if (!TEST_ptr_null(CRYPTO_get_ex_data(&t1->ex_data, saved_idx3)))
256        goto err;
257
258    MYOBJ_sethello(t1, p);
259    cp = MYOBJ_gethello(t1);
260    if (!TEST_ptr_eq(cp, p))
261        goto err;
262
263    MYOBJ_sethello2(t1, p);
264    cp = MYOBJ_gethello2(t1);
265    if (!TEST_ptr_eq(cp, p))
266        goto err;
267
268    MYOBJ_allochello3(t1, p);
269    cp = MYOBJ_gethello3(t1);
270    if (!TEST_ptr_eq(cp, p))
271        goto err;
272
273    cp = MYOBJ_gethello(t2);
274    if (!TEST_ptr_null(cp))
275        goto err;
276
277    cp = MYOBJ_gethello2(t2);
278    if (!TEST_ptr_null(cp))
279        goto err;
280
281    t3 = MYOBJ_dup(t1);
282    if (!TEST_int_eq(t3->st, 1))
283        goto err;
284
285    ex_data = CRYPTO_get_ex_data(&t3->ex_data, saved_idx2);
286    if (!TEST_ptr(ex_data))
287        goto err;
288    if (!TEST_int_eq(ex_data->dup, 1))
289        goto err;
290
291    cp = MYOBJ_gethello(t3);
292    if (!TEST_ptr_eq(cp, p))
293        goto err;
294
295    cp = MYOBJ_gethello2(t3);
296    if (!TEST_ptr_eq(cp, p))
297        goto err;
298
299    cp = MYOBJ_gethello3(t3);
300    if (!TEST_ptr_eq(cp, p))
301        goto err;
302
303    if (gbl_result)
304        res = 1;
305 err:
306    MYOBJ_free(t1);
307    MYOBJ_free(t2);
308    MYOBJ_free(t3);
309    OPENSSL_free(saved_argp);
310    saved_argp = NULL;
311    OPENSSL_free(p);
312    return res;
313}
314
315int setup_tests(void)
316{
317    ADD_TEST(test_exdata);
318    return 1;
319}
320