Coverage Report

Created: 2023-09-25 06:41

/src/openssl30/crypto/asn1/tasn_new.c
Line
Count
Source (jump to first uncovered line)
1
/*
2
 * Copyright 2000-2021 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 <stddef.h>
11
#include <openssl/asn1.h>
12
#include <openssl/objects.h>
13
#include <openssl/err.h>
14
#include <openssl/asn1t.h>
15
#include <string.h>
16
#include "asn1_local.h"
17
18
static int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
19
                               int embed, OSSL_LIB_CTX *libctx,
20
                               const char *propq);
21
static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
22
                              int embed);
23
static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
24
static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
25
                             OSSL_LIB_CTX *libctx, const char *propq);
26
static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
27
static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it);
28
29
ASN1_VALUE *ASN1_item_new(const ASN1_ITEM *it)
30
40.5k
{
31
40.5k
    ASN1_VALUE *ret = NULL;
32
40.5k
    if (ASN1_item_ex_new(&ret, it) > 0)
33
40.5k
        return ret;
34
0
    return NULL;
35
40.5k
}
36
37
ASN1_VALUE *ASN1_item_new_ex(const ASN1_ITEM *it, OSSL_LIB_CTX *libctx,
38
                             const char *propq)
39
4.49k
{
40
4.49k
    ASN1_VALUE *ret = NULL;
41
4.49k
    if (asn1_item_embed_new(&ret, it, 0, libctx, propq) > 0)
42
4.49k
        return ret;
43
0
    return NULL;
44
4.49k
}
45
46
/* Allocate an ASN1 structure */
47
48
49
int ossl_asn1_item_ex_new_intern(ASN1_VALUE **pval, const ASN1_ITEM *it,
50
                                 OSSL_LIB_CTX *libctx, const char *propq)
51
36.0k
{
52
36.0k
    return asn1_item_embed_new(pval, it, 0, libctx, propq);
53
36.0k
}
54
55
int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
56
40.5k
{
57
40.5k
    return asn1_item_embed_new(pval, it, 0, NULL, NULL);
58
40.5k
}
59
60
int asn1_item_embed_new(ASN1_VALUE **pval, const ASN1_ITEM *it, int embed,
61
                        OSSL_LIB_CTX *libctx, const char *propq)
62
243k
{
63
243k
    const ASN1_TEMPLATE *tt = NULL;
64
243k
    const ASN1_EXTERN_FUNCS *ef;
65
243k
    const ASN1_AUX *aux = it->funcs;
66
243k
    ASN1_aux_cb *asn1_cb;
67
243k
    ASN1_VALUE **pseqval;
68
243k
    int i;
69
243k
    if (aux && aux->asn1_cb)
70
7.07k
        asn1_cb = aux->asn1_cb;
71
236k
    else
72
236k
        asn1_cb = 0;
73
74
243k
    switch (it->itype) {
75
76
13.4k
    case ASN1_ITYPE_EXTERN:
77
13.4k
        ef = it->funcs;
78
13.4k
        if (ef != NULL) {
79
13.4k
            if (ef->asn1_ex_new_ex != NULL) {
80
4.49k
                if (!ef->asn1_ex_new_ex(pval, it, libctx, propq))
81
0
                    goto memerr;
82
8.99k
            } else if (ef->asn1_ex_new != NULL) {
83
8.99k
                if (!ef->asn1_ex_new(pval, it))
84
0
                    goto memerr;
85
8.99k
            }
86
13.4k
        }
87
13.4k
        break;
88
89
102k
    case ASN1_ITYPE_PRIMITIVE:
90
102k
        if (it->templates) {
91
0
            if (!asn1_template_new(pval, it->templates, libctx, propq))
92
0
                goto memerr;
93
102k
        } else if (!asn1_primitive_new(pval, it, embed))
94
0
            goto memerr;
95
102k
        break;
96
97
102k
    case ASN1_ITYPE_MSTRING:
98
43.3k
        if (!asn1_primitive_new(pval, it, embed))
99
0
            goto memerr;
100
43.3k
        break;
101
102
43.3k
    case ASN1_ITYPE_CHOICE:
103
842
        if (asn1_cb) {
104
58
            i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
105
58
            if (!i)
106
0
                goto auxerr;
107
58
            if (i == 2) {
108
0
                return 1;
109
0
            }
110
58
        }
111
842
        if (embed) {
112
0
            memset(*pval, 0, it->size);
113
842
        } else {
114
842
            *pval = OPENSSL_zalloc(it->size);
115
842
            if (*pval == NULL)
116
0
                goto memerr;
117
842
        }
118
842
        ossl_asn1_set_choice_selector(pval, -1, it);
119
842
        if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
120
0
            goto auxerr2;
121
842
        break;
122
123
842
    case ASN1_ITYPE_NDEF_SEQUENCE:
124
83.3k
    case ASN1_ITYPE_SEQUENCE:
125
83.3k
        if (asn1_cb) {
126
6.52k
            i = asn1_cb(ASN1_OP_NEW_PRE, pval, it, NULL);
127
6.52k
            if (!i)
128
0
                goto auxerr;
129
6.52k
            if (i == 2) {
130
2.01k
                return 1;
131
2.01k
            }
132
6.52k
        }
133
81.3k
        if (embed) {
134
17.9k
            memset(*pval, 0, it->size);
135
63.3k
        } else {
136
63.3k
            *pval = OPENSSL_zalloc(it->size);
137
63.3k
            if (*pval == NULL)
138
0
                goto memerr;
139
63.3k
        }
140
        /* 0 : init. lock */
141
81.3k
        if (ossl_asn1_do_lock(pval, 0, it) < 0) {
142
0
            if (!embed) {
143
0
                OPENSSL_free(*pval);
144
0
                *pval = NULL;
145
0
            }
146
0
            goto memerr;
147
0
        }
148
81.3k
        ossl_asn1_enc_init(pval, it);
149
297k
        for (i = 0, tt = it->templates; i < it->tcount; tt++, i++) {
150
216k
            pseqval = ossl_asn1_get_field_ptr(pval, tt);
151
216k
            if (!asn1_template_new(pseqval, tt, libctx, propq))
152
0
                goto memerr2;
153
216k
        }
154
81.3k
        if (asn1_cb && !asn1_cb(ASN1_OP_NEW_POST, pval, it, NULL))
155
0
            goto auxerr2;
156
81.3k
        break;
157
243k
    }
158
241k
    return 1;
159
160
0
 memerr2:
161
0
    ossl_asn1_item_embed_free(pval, it, embed);
162
0
 memerr:
163
0
    ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
164
0
    return 0;
165
166
0
 auxerr2:
167
0
    ossl_asn1_item_embed_free(pval, it, embed);
168
0
 auxerr:
169
0
    ERR_raise(ERR_LIB_ASN1, ASN1_R_AUX_ERROR);
170
0
    return 0;
171
172
0
}
173
174
static void asn1_item_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
175
48.3k
{
176
48.3k
    const ASN1_EXTERN_FUNCS *ef;
177
178
48.3k
    switch (it->itype) {
179
180
0
    case ASN1_ITYPE_EXTERN:
181
0
        ef = it->funcs;
182
0
        if (ef && ef->asn1_ex_clear)
183
0
            ef->asn1_ex_clear(pval, it);
184
0
        else
185
0
            *pval = NULL;
186
0
        break;
187
188
48.1k
    case ASN1_ITYPE_PRIMITIVE:
189
48.1k
        if (it->templates)
190
0
            asn1_template_clear(pval, it->templates);
191
48.1k
        else
192
48.1k
            asn1_primitive_clear(pval, it);
193
48.1k
        break;
194
195
8
    case ASN1_ITYPE_MSTRING:
196
8
        asn1_primitive_clear(pval, it);
197
8
        break;
198
199
136
    case ASN1_ITYPE_CHOICE:
200
193
    case ASN1_ITYPE_SEQUENCE:
201
193
    case ASN1_ITYPE_NDEF_SEQUENCE:
202
193
        *pval = NULL;
203
193
        break;
204
48.3k
    }
205
48.3k
}
206
207
static int asn1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
208
                             OSSL_LIB_CTX *libctx, const char *propq)
209
216k
{
210
216k
    const ASN1_ITEM *it = ASN1_ITEM_ptr(tt->item);
211
216k
    int embed = tt->flags & ASN1_TFLG_EMBED;
212
216k
    ASN1_VALUE *tval;
213
216k
    int ret;
214
216k
    if (embed) {
215
37.5k
        tval = (ASN1_VALUE *)pval;
216
37.5k
        pval = &tval;
217
37.5k
    }
218
216k
    if (tt->flags & ASN1_TFLG_OPTIONAL) {
219
53.5k
        asn1_template_clear(pval, tt);
220
53.5k
        return 1;
221
53.5k
    }
222
    /* If ANY DEFINED BY nothing to do */
223
224
162k
    if (tt->flags & ASN1_TFLG_ADB_MASK) {
225
408
        *pval = NULL;
226
408
        return 1;
227
408
    }
228
    /* If SET OF or SEQUENCE OF, its a STACK */
229
162k
    if (tt->flags & ASN1_TFLG_SK_MASK) {
230
0
        STACK_OF(ASN1_VALUE) *skval;
231
0
        skval = sk_ASN1_VALUE_new_null();
232
0
        if (!skval) {
233
0
            ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
234
0
            ret = 0;
235
0
            goto done;
236
0
        }
237
0
        *pval = (ASN1_VALUE *)skval;
238
0
        ret = 1;
239
0
        goto done;
240
0
    }
241
    /* Otherwise pass it back to the item routine */
242
162k
    ret = asn1_item_embed_new(pval, it, embed, libctx, propq);
243
162k
 done:
244
162k
    return ret;
245
162k
}
246
247
static void asn1_template_clear(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt)
248
53.5k
{
249
    /* If ADB or STACK just NULL the field */
250
53.5k
    if (tt->flags & (ASN1_TFLG_ADB_MASK | ASN1_TFLG_SK_MASK))
251
5.23k
        *pval = NULL;
252
48.3k
    else
253
48.3k
        asn1_item_clear(pval, ASN1_ITEM_ptr(tt->item));
254
53.5k
}
255
256
/*
257
 * NB: could probably combine most of the real XXX_new() behaviour and junk
258
 * all the old functions.
259
 */
260
261
static int asn1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it,
262
                              int embed)
263
145k
{
264
145k
    ASN1_TYPE *typ;
265
145k
    ASN1_STRING *str;
266
145k
    int utype;
267
268
145k
    if (!it)
269
0
        return 0;
270
271
145k
    if (it->funcs) {
272
484
        const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
273
484
        if (embed) {
274
408
            if (pf->prim_clear) {
275
408
                pf->prim_clear(pval, it);
276
408
                return 1;
277
408
            }
278
408
        } else if (pf->prim_new) {
279
76
            return pf->prim_new(pval, it);
280
76
        }
281
484
    }
282
283
145k
    if (it->itype == ASN1_ITYPE_MSTRING)
284
43.3k
        utype = -1;
285
101k
    else
286
101k
        utype = it->utype;
287
145k
    switch (utype) {
288
65.0k
    case V_ASN1_OBJECT:
289
65.0k
        *pval = (ASN1_VALUE *)OBJ_nid2obj(NID_undef);
290
65.0k
        return 1;
291
292
0
    case V_ASN1_BOOLEAN:
293
0
        *(ASN1_BOOLEAN *)pval = it->size;
294
0
        return 1;
295
296
0
    case V_ASN1_NULL:
297
0
        *pval = (ASN1_VALUE *)1;
298
0
        return 1;
299
300
15.8k
    case V_ASN1_ANY:
301
15.8k
        if ((typ = OPENSSL_malloc(sizeof(*typ))) == NULL) {
302
0
            ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
303
0
            return 0;
304
0
        }
305
15.8k
        typ->value.ptr = NULL;
306
15.8k
        typ->type = -1;
307
15.8k
        *pval = (ASN1_VALUE *)typ;
308
15.8k
        break;
309
310
64.1k
    default:
311
64.1k
        if (embed) {
312
19.1k
            str = *(ASN1_STRING **)pval;
313
19.1k
            memset(str, 0, sizeof(*str));
314
19.1k
            str->type = utype;
315
19.1k
            str->flags = ASN1_STRING_FLAG_EMBED;
316
45.0k
        } else {
317
45.0k
            str = ASN1_STRING_type_new(utype);
318
45.0k
            *pval = (ASN1_VALUE *)str;
319
45.0k
        }
320
64.1k
        if (it->itype == ASN1_ITYPE_MSTRING && str)
321
43.3k
            str->flags |= ASN1_STRING_FLAG_MSTRING;
322
64.1k
        break;
323
145k
    }
324
80.0k
    if (*pval)
325
80.0k
        return 1;
326
0
    return 0;
327
80.0k
}
328
329
static void asn1_primitive_clear(ASN1_VALUE **pval, const ASN1_ITEM *it)
330
48.1k
{
331
48.1k
    int utype;
332
48.1k
    if (it && it->funcs) {
333
25
        const ASN1_PRIMITIVE_FUNCS *pf = it->funcs;
334
25
        if (pf->prim_clear)
335
0
            pf->prim_clear(pval, it);
336
25
        else
337
25
            *pval = NULL;
338
25
        return;
339
25
    }
340
48.1k
    if (!it || (it->itype == ASN1_ITYPE_MSTRING))
341
8
        utype = -1;
342
48.1k
    else
343
48.1k
        utype = it->utype;
344
48.1k
    if (utype == V_ASN1_BOOLEAN)
345
11.2k
        *(ASN1_BOOLEAN *)pval = it->size;
346
36.8k
    else
347
36.8k
        *pval = NULL;
348
48.1k
}