Coverage Report

Created: 2026-10-28 06:28

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/openssl34/crypto/asn1/tasn_prn.c
Line
Count
Source
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 "internal/cryptlib.h"
12
#include <openssl/asn1.h>
13
#include <openssl/asn1t.h>
14
#include <openssl/objects.h>
15
#include <openssl/buffer.h>
16
#include <openssl/err.h>
17
#include <openssl/x509v3.h>
18
#include "crypto/asn1.h"
19
#include "asn1_local.h"
20
21
/*
22
 * Print routines.
23
 */
24
25
/* ASN1_PCTX routines */
26
27
static ASN1_PCTX default_pctx = {
28
    ASN1_PCTX_FLAGS_SHOW_ABSENT, /* flags */
29
    0, /* nm_flags */
30
    0, /* cert_flags */
31
    0, /* oid_flags */
32
    0 /* str_flags */
33
};
34
35
ASN1_PCTX *ASN1_PCTX_new(void)
36
24
{
37
24
    ASN1_PCTX *ret;
38
39
24
    ret = OPENSSL_zalloc(sizeof(*ret));
40
24
    if (ret == NULL)
41
0
        return NULL;
42
24
    return ret;
43
24
}
44
45
void ASN1_PCTX_free(ASN1_PCTX *p)
46
0
{
47
0
    OPENSSL_free(p);
48
0
}
49
50
unsigned long ASN1_PCTX_get_flags(const ASN1_PCTX *p)
51
0
{
52
0
    return p->flags;
53
0
}
54
55
void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags)
56
24
{
57
24
    p->flags = flags;
58
24
}
59
60
unsigned long ASN1_PCTX_get_nm_flags(const ASN1_PCTX *p)
61
0
{
62
0
    return p->nm_flags;
63
0
}
64
65
void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags)
66
0
{
67
0
    p->nm_flags = flags;
68
0
}
69
70
unsigned long ASN1_PCTX_get_cert_flags(const ASN1_PCTX *p)
71
0
{
72
0
    return p->cert_flags;
73
0
}
74
75
void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags)
76
0
{
77
0
    p->cert_flags = flags;
78
0
}
79
80
unsigned long ASN1_PCTX_get_oid_flags(const ASN1_PCTX *p)
81
0
{
82
0
    return p->oid_flags;
83
0
}
84
85
void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags)
86
0
{
87
0
    p->oid_flags = flags;
88
0
}
89
90
unsigned long ASN1_PCTX_get_str_flags(const ASN1_PCTX *p)
91
0
{
92
0
    return p->str_flags;
93
0
}
94
95
void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags)
96
24
{
97
24
    p->str_flags = flags;
98
24
}
99
100
/* Main print routines */
101
102
static int asn1_item_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
103
    const ASN1_ITEM *it,
104
    const char *fname, const char *sname,
105
    int nohdr, const ASN1_PCTX *pctx);
106
107
static int asn1_template_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
108
    const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx);
109
110
static int asn1_primitive_print(BIO *out, const ASN1_VALUE **fld,
111
    const ASN1_ITEM *it, int indent,
112
    const char *fname, const char *sname,
113
    const ASN1_PCTX *pctx);
114
115
static int asn1_print_fsname(BIO *out, int indent,
116
    const char *fname, const char *sname,
117
    const ASN1_PCTX *pctx);
118
119
int ASN1_item_print(BIO *out, const ASN1_VALUE *ifld, int indent,
120
    const ASN1_ITEM *it, const ASN1_PCTX *pctx)
121
365k
{
122
365k
    const char *sname;
123
365k
    if (pctx == NULL)
124
37.7k
        pctx = &default_pctx;
125
365k
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
126
0
        sname = NULL;
127
365k
    else
128
365k
        sname = it->sname;
129
365k
    return asn1_item_print_ctx(out, &ifld, indent, it, NULL, sname, 0, pctx);
130
365k
}
131
132
static int asn1_item_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
133
    const ASN1_ITEM *it,
134
    const char *fname, const char *sname,
135
    int nohdr, const ASN1_PCTX *pctx)
136
5.76M
{
137
5.76M
    const ASN1_TEMPLATE *tt;
138
5.76M
    const ASN1_EXTERN_FUNCS *ef;
139
5.76M
    const ASN1_VALUE **tmpfld;
140
5.76M
    const ASN1_AUX *aux = it->funcs;
141
5.76M
    ASN1_aux_const_cb *asn1_cb = NULL;
142
5.76M
    ASN1_PRINT_ARG parg;
143
5.76M
    int i;
144
5.76M
    if (aux != NULL) {
145
710k
        parg.out = out;
146
710k
        parg.indent = indent;
147
710k
        parg.pctx = pctx;
148
710k
        asn1_cb = ((aux->flags & ASN1_AFLG_CONST_CB) != 0) ? aux->asn1_const_cb
149
710k
                                                           : (ASN1_aux_const_cb *)aux->asn1_cb; /* backward compatibility */
150
710k
    }
151
152
5.76M
    if (((it->itype != ASN1_ITYPE_PRIMITIVE)
153
3.90M
            || (it->utype != V_ASN1_BOOLEAN))
154
5.75M
        && *fld == NULL) {
155
1.92M
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT) {
156
1.92M
            if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
157
0
                return 0;
158
1.92M
            if (BIO_puts(out, "<ABSENT>\n") <= 0)
159
0
                return 0;
160
1.92M
        }
161
1.92M
        return 1;
162
1.92M
    }
163
164
3.84M
    switch (it->itype) {
165
2.82M
    case ASN1_ITYPE_PRIMITIVE:
166
2.82M
        if (it->templates) {
167
75.9k
            if (!asn1_template_print_ctx(out, fld, indent,
168
75.9k
                    it->templates, pctx))
169
3.92k
                return 0;
170
71.9k
            break;
171
75.9k
        }
172
        /* fall through */
173
2.78M
    case ASN1_ITYPE_MSTRING:
174
2.78M
        if (!asn1_primitive_print(out, fld, it, indent, fname, sname, pctx))
175
25.4k
            return 0;
176
2.76M
        break;
177
178
2.76M
    case ASN1_ITYPE_EXTERN:
179
92.2k
        if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
180
0
            return 0;
181
        /* Use new style print routine if possible */
182
92.2k
        ef = it->funcs;
183
92.2k
        if (ef && ef->asn1_ex_print) {
184
92.2k
            i = ef->asn1_ex_print(out, fld, indent, "", pctx);
185
92.2k
            if (!i)
186
481
                return 0;
187
91.7k
            if ((i == 2) && (BIO_puts(out, "\n") <= 0))
188
0
                return 0;
189
91.7k
            return 1;
190
91.7k
        } else if (sname && BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0)
191
0
            return 0;
192
0
        break;
193
194
158k
    case ASN1_ITYPE_CHOICE:
195
        /* CHOICE type, get selector */
196
158k
        i = ossl_asn1_get_choice_selector_const(fld, it);
197
        /* This should never happen... */
198
158k
        if ((i < 0) || (i >= it->tcount)) {
199
0
            if (BIO_printf(out, "ERROR: selector [%d] invalid\n", i) <= 0)
200
0
                return 0;
201
0
            return 1;
202
0
        }
203
158k
        tt = it->templates + i;
204
158k
        tmpfld = ossl_asn1_get_const_field_ptr(fld, tt);
205
158k
        if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx))
206
9.51k
            return 0;
207
149k
        break;
208
209
713k
    case ASN1_ITYPE_SEQUENCE:
210
724k
    case ASN1_ITYPE_NDEF_SEQUENCE:
211
724k
        if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
212
0
            return 0;
213
724k
        if (fname || sname) {
214
426k
            if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
215
73.4k
                if (BIO_puts(out, " {\n") <= 0)
216
0
                    return 0;
217
353k
            } else {
218
353k
                if (BIO_puts(out, "\n") <= 0)
219
0
                    return 0;
220
353k
            }
221
426k
        }
222
223
724k
        if (asn1_cb) {
224
62.1k
            i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg);
225
62.1k
            if (i == 0)
226
0
                return 0;
227
62.1k
            if (i == 2)
228
0
                return 1;
229
62.1k
        }
230
231
        /* Print each field entry */
232
3.97M
        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
233
3.29M
            const ASN1_TEMPLATE *seqtt;
234
3.29M
            seqtt = ossl_asn1_do_adb(*fld, tt, 1);
235
3.29M
            if (!seqtt)
236
0
                return 0;
237
3.29M
            tmpfld = ossl_asn1_get_const_field_ptr(fld, seqtt);
238
3.29M
            if (!asn1_template_print_ctx(out, tmpfld,
239
3.29M
                    indent + 2, seqtt, pctx))
240
35.9k
                return 0;
241
3.29M
        }
242
688k
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
243
125k
            if (BIO_printf(out, "%*s}\n", indent, "") < 0)
244
0
                return 0;
245
125k
        }
246
247
688k
        if (asn1_cb) {
248
44.6k
            i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg);
249
44.6k
            if (i == 0)
250
0
                return 0;
251
44.6k
        }
252
688k
        break;
253
254
688k
    default:
255
0
        BIO_printf(out, "Unprocessed type %d\n", it->itype);
256
0
        return 0;
257
3.84M
    }
258
259
3.67M
    return 1;
260
3.84M
}
261
262
static int asn1_template_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
263
    const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx)
264
4.70M
{
265
4.70M
    int i, flags;
266
4.70M
    const char *sname, *fname;
267
4.70M
    const ASN1_VALUE *tfld;
268
4.70M
    flags = tt->flags;
269
4.70M
    if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME)
270
637k
        sname = ASN1_ITEM_ptr(tt->item)->sname;
271
4.06M
    else
272
4.06M
        sname = NULL;
273
4.70M
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
274
0
        fname = NULL;
275
4.70M
    else
276
4.70M
        fname = tt->field_name;
277
278
    /*
279
     * If field is embedded then fld needs fixing so it is a pointer to
280
     * a pointer to a field.
281
     */
282
4.70M
    if (flags & ASN1_TFLG_EMBED) {
283
62.4k
        tfld = (const ASN1_VALUE *)fld;
284
62.4k
        fld = &tfld;
285
62.4k
    }
286
287
4.70M
    if (flags & ASN1_TFLG_SK_MASK) {
288
537k
        char *tname;
289
537k
        const ASN1_VALUE *skitem;
290
537k
        STACK_OF(const_ASN1_VALUE) *stack;
291
292
        /* SET OF, SEQUENCE OF */
293
537k
        if (fname) {
294
537k
            if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF) {
295
132k
                if (flags & ASN1_TFLG_SET_OF)
296
25.1k
                    tname = "SET";
297
107k
                else
298
107k
                    tname = "SEQUENCE";
299
132k
                if (BIO_printf(out, "%*s%s OF %s {\n",
300
132k
                        indent, "", tname, tt->field_name)
301
132k
                    <= 0)
302
0
                    return 0;
303
404k
            } else if (BIO_printf(out, "%*s%s:\n", indent, "", fname) <= 0)
304
0
                return 0;
305
537k
        }
306
537k
        stack = (STACK_OF(const_ASN1_VALUE) *)*fld;
307
4.18M
        for (i = 0; i < sk_const_ASN1_VALUE_num(stack); i++) {
308
3.65M
            if ((i > 0) && (BIO_puts(out, "\n") <= 0))
309
0
                return 0;
310
311
3.65M
            skitem = sk_const_ASN1_VALUE_value(stack, i);
312
3.65M
            if (!asn1_item_print_ctx(out, &skitem, indent + 2,
313
3.65M
                    ASN1_ITEM_ptr(tt->item), NULL, NULL, 1,
314
3.65M
                    pctx))
315
9.36k
                return 0;
316
3.65M
        }
317
528k
        if (i == 0 && BIO_printf(out, "%*s<%s>\n", indent + 2, "", stack == NULL ? "ABSENT" : "EMPTY") <= 0)
318
0
            return 0;
319
528k
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
320
128k
            if (BIO_printf(out, "%*s}\n", indent, "") <= 0)
321
0
                return 0;
322
128k
        }
323
528k
        return 1;
324
528k
    }
325
4.16M
    return asn1_item_print_ctx(out, fld, indent, ASN1_ITEM_ptr(tt->item),
326
4.16M
        fname, sname, 0, pctx);
327
4.70M
}
328
329
static int asn1_print_fsname(BIO *out, int indent,
330
    const char *fname, const char *sname,
331
    const ASN1_PCTX *pctx)
332
7.45M
{
333
7.45M
    static const char spaces[] = "                    ";
334
7.45M
    static const int nspaces = sizeof(spaces) - 1;
335
336
7.50M
    while (indent > nspaces) {
337
47.8k
        if (BIO_write(out, spaces, nspaces) != nspaces)
338
0
            return 0;
339
47.8k
        indent -= nspaces;
340
47.8k
    }
341
7.45M
    if (BIO_write(out, spaces, indent) != indent)
342
0
        return 0;
343
7.45M
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
344
0
        sname = NULL;
345
7.45M
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
346
0
        fname = NULL;
347
7.45M
    if (!sname && !fname)
348
3.19M
        return 1;
349
4.26M
    if (fname) {
350
3.95M
        if (BIO_puts(out, fname) <= 0)
351
0
            return 0;
352
3.95M
    }
353
4.26M
    if (sname) {
354
810k
        if (fname) {
355
495k
            if (BIO_printf(out, " (%s)", sname) <= 0)
356
0
                return 0;
357
495k
        } else {
358
314k
            if (BIO_puts(out, sname) <= 0)
359
0
                return 0;
360
314k
        }
361
810k
    }
362
4.26M
    if (BIO_write(out, ": ", 2) != 2)
363
0
        return 0;
364
4.26M
    return 1;
365
4.26M
}
366
367
static int asn1_print_boolean(BIO *out, int boolval)
368
24.4k
{
369
24.4k
    const char *str;
370
24.4k
    switch (boolval) {
371
0
    case -1:
372
0
        str = "BOOL ABSENT";
373
0
        break;
374
375
14.7k
    case 0:
376
14.7k
        str = "FALSE";
377
14.7k
        break;
378
379
9.66k
    default:
380
9.66k
        str = "TRUE";
381
9.66k
        break;
382
24.4k
    }
383
384
24.4k
    if (BIO_puts(out, str) <= 0)
385
0
        return 0;
386
24.4k
    return 1;
387
24.4k
}
388
389
static int asn1_print_integer(BIO *out, const ASN1_INTEGER *str)
390
3.07M
{
391
3.07M
    char *s;
392
3.07M
    int ret = 1;
393
3.07M
    s = i2s_ASN1_INTEGER(NULL, str);
394
3.07M
    if (s == NULL)
395
423
        return 0;
396
3.07M
    if (BIO_puts(out, s) <= 0)
397
0
        ret = 0;
398
3.07M
    OPENSSL_free(s);
399
3.07M
    return ret;
400
3.07M
}
401
402
static int asn1_print_oid(BIO *out, const ASN1_OBJECT *oid)
403
314k
{
404
314k
    char objbuf[80];
405
314k
    const char *ln;
406
314k
    ln = OBJ_nid2ln(OBJ_obj2nid(oid));
407
314k
    if (!ln)
408
0
        ln = "";
409
314k
    OBJ_obj2txt(objbuf, sizeof(objbuf), oid, 1);
410
314k
    if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0)
411
0
        return 0;
412
314k
    return 1;
413
314k
}
414
415
static int asn1_print_obstring(BIO *out, const ASN1_STRING *str, int indent)
416
214k
{
417
214k
    if (str->type == V_ASN1_BIT_STRING) {
418
97.8k
        if (BIO_printf(out, " (%ld unused bits)\n", str->flags & 0x7) <= 0)
419
0
            return 0;
420
116k
    } else if (BIO_puts(out, "\n") <= 0)
421
0
        return 0;
422
214k
    if ((str->length > 0)
423
126k
        && BIO_dump_indent(out, (const char *)str->data, str->length,
424
126k
               indent + 2)
425
126k
            <= 0)
426
0
        return 0;
427
214k
    return 1;
428
214k
}
429
430
static int asn1_primitive_print(BIO *out, const ASN1_VALUE **fld,
431
    const ASN1_ITEM *it, int indent,
432
    const char *fname, const char *sname,
433
    const ASN1_PCTX *pctx)
434
4.25M
{
435
4.25M
    long utype;
436
4.25M
    ASN1_STRING *str;
437
4.25M
    int ret = 1, needlf = 1;
438
4.25M
    const char *pname;
439
4.25M
    const ASN1_PRIMITIVE_FUNCS *pf;
440
4.25M
    pf = it->funcs;
441
4.25M
    if (!asn1_print_fsname(out, indent, fname, sname, pctx))
442
0
        return 0;
443
4.25M
    if (pf && pf->prim_print)
444
90.0k
        return pf->prim_print(out, fld, it, indent, pctx);
445
4.16M
    if (it->itype == ASN1_ITYPE_MSTRING) {
446
54.9k
        str = (ASN1_STRING *)*fld;
447
54.9k
        utype = str->type & ~V_ASN1_NEG;
448
4.10M
    } else {
449
4.10M
        utype = it->utype;
450
4.10M
        if (utype == V_ASN1_BOOLEAN)
451
19.3k
            str = NULL;
452
4.08M
        else
453
4.08M
            str = (ASN1_STRING *)*fld;
454
4.10M
    }
455
4.16M
    if (utype == V_ASN1_ANY) {
456
466k
        const ASN1_TYPE *atype = (const ASN1_TYPE *)*fld;
457
466k
        utype = atype->type;
458
466k
        fld = (const ASN1_VALUE **)&atype->value.asn1_value; /* actually is const */
459
466k
        str = (ASN1_STRING *)*fld;
460
466k
        if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE)
461
0
            pname = NULL;
462
466k
        else
463
466k
            pname = ASN1_tag2str(utype);
464
3.69M
    } else {
465
3.69M
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE)
466
310k
            pname = ASN1_tag2str(utype);
467
3.38M
        else
468
3.38M
            pname = NULL;
469
3.69M
    }
470
471
4.16M
    if (utype == V_ASN1_NULL) {
472
22.1k
        if (BIO_puts(out, "NULL\n") <= 0)
473
0
            return 0;
474
22.1k
        return 1;
475
22.1k
    }
476
477
4.13M
    if (pname) {
478
756k
        if (BIO_puts(out, pname) <= 0)
479
0
            return 0;
480
756k
        if (BIO_puts(out, ":") <= 0)
481
0
            return 0;
482
756k
    }
483
484
4.13M
    switch (utype) {
485
24.4k
    case V_ASN1_BOOLEAN: {
486
24.4k
        int boolval = *(int *)fld;
487
24.4k
        if (boolval == -1)
488
0
            boolval = it->size;
489
24.4k
        ret = asn1_print_boolean(out, boolval);
490
24.4k
    } break;
491
492
3.07M
    case V_ASN1_INTEGER:
493
3.07M
    case V_ASN1_ENUMERATED:
494
3.07M
        ret = asn1_print_integer(out, str);
495
3.07M
        break;
496
497
18.7k
    case V_ASN1_UTCTIME:
498
18.7k
        ret = ASN1_UTCTIME_print(out, str);
499
18.7k
        break;
500
501
14.8k
    case V_ASN1_GENERALIZEDTIME:
502
14.8k
        ret = ASN1_GENERALIZEDTIME_print(out, str);
503
14.8k
        break;
504
505
314k
    case V_ASN1_OBJECT:
506
314k
        ret = asn1_print_oid(out, (const ASN1_OBJECT *)*fld);
507
314k
        break;
508
509
116k
    case V_ASN1_OCTET_STRING:
510
214k
    case V_ASN1_BIT_STRING:
511
214k
        ret = asn1_print_obstring(out, str, indent);
512
214k
        needlf = 0;
513
214k
        break;
514
515
293k
    case V_ASN1_SEQUENCE:
516
308k
    case V_ASN1_SET:
517
376k
    case V_ASN1_OTHER:
518
376k
        if (BIO_puts(out, "\n") <= 0)
519
0
            return 0;
520
376k
        if (ASN1_parse_dump(out, str->data, str->length, indent, 0) <= 0)
521
17.4k
            ret = 0;
522
376k
        needlf = 0;
523
376k
        break;
524
525
101k
    default:
526
101k
        ret = ASN1_STRING_print_ex(out, str, pctx->str_flags);
527
4.13M
    }
528
4.13M
    if (!ret)
529
36.9k
        return 0;
530
4.10M
    if (needlf && BIO_puts(out, "\n") <= 0)
531
0
        return 0;
532
4.10M
    return 1;
533
4.10M
}