Coverage Report

Created: 2026-02-14 07:20

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/src/openssl30/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
22
{
37
22
    ASN1_PCTX *ret;
38
39
22
    ret = OPENSSL_zalloc(sizeof(*ret));
40
22
    if (ret == NULL) {
41
0
        ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE);
42
0
        return NULL;
43
0
    }
44
22
    return ret;
45
22
}
46
47
void ASN1_PCTX_free(ASN1_PCTX *p)
48
0
{
49
0
    OPENSSL_free(p);
50
0
}
51
52
unsigned long ASN1_PCTX_get_flags(const ASN1_PCTX *p)
53
0
{
54
0
    return p->flags;
55
0
}
56
57
void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags)
58
22
{
59
22
    p->flags = flags;
60
22
}
61
62
unsigned long ASN1_PCTX_get_nm_flags(const ASN1_PCTX *p)
63
0
{
64
0
    return p->nm_flags;
65
0
}
66
67
void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags)
68
0
{
69
0
    p->nm_flags = flags;
70
0
}
71
72
unsigned long ASN1_PCTX_get_cert_flags(const ASN1_PCTX *p)
73
0
{
74
0
    return p->cert_flags;
75
0
}
76
77
void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags)
78
0
{
79
0
    p->cert_flags = flags;
80
0
}
81
82
unsigned long ASN1_PCTX_get_oid_flags(const ASN1_PCTX *p)
83
0
{
84
0
    return p->oid_flags;
85
0
}
86
87
void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags)
88
0
{
89
0
    p->oid_flags = flags;
90
0
}
91
92
unsigned long ASN1_PCTX_get_str_flags(const ASN1_PCTX *p)
93
0
{
94
0
    return p->str_flags;
95
0
}
96
97
void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags)
98
22
{
99
22
    p->str_flags = flags;
100
22
}
101
102
/* Main print routines */
103
104
static int asn1_item_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
105
    const ASN1_ITEM *it,
106
    const char *fname, const char *sname,
107
    int nohdr, const ASN1_PCTX *pctx);
108
109
static int asn1_template_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
110
    const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx);
111
112
static int asn1_primitive_print(BIO *out, const ASN1_VALUE **fld,
113
    const ASN1_ITEM *it, int indent,
114
    const char *fname, const char *sname,
115
    const ASN1_PCTX *pctx);
116
117
static int asn1_print_fsname(BIO *out, int indent,
118
    const char *fname, const char *sname,
119
    const ASN1_PCTX *pctx);
120
121
int ASN1_item_print(BIO *out, const ASN1_VALUE *ifld, int indent,
122
    const ASN1_ITEM *it, const ASN1_PCTX *pctx)
123
392k
{
124
392k
    const char *sname;
125
392k
    if (pctx == NULL)
126
39.4k
        pctx = &default_pctx;
127
392k
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
128
0
        sname = NULL;
129
392k
    else
130
392k
        sname = it->sname;
131
392k
    return asn1_item_print_ctx(out, &ifld, indent, it, NULL, sname, 0, pctx);
132
392k
}
133
134
static int asn1_item_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
135
    const ASN1_ITEM *it,
136
    const char *fname, const char *sname,
137
    int nohdr, const ASN1_PCTX *pctx)
138
7.49M
{
139
7.49M
    const ASN1_TEMPLATE *tt;
140
7.49M
    const ASN1_EXTERN_FUNCS *ef;
141
7.49M
    const ASN1_VALUE **tmpfld;
142
7.49M
    const ASN1_AUX *aux = it->funcs;
143
7.49M
    ASN1_aux_const_cb *asn1_cb = NULL;
144
7.49M
    ASN1_PRINT_ARG parg;
145
7.49M
    int i;
146
7.49M
    if (aux != NULL) {
147
990k
        parg.out = out;
148
990k
        parg.indent = indent;
149
990k
        parg.pctx = pctx;
150
990k
        asn1_cb = ((aux->flags & ASN1_AFLG_CONST_CB) != 0) ? aux->asn1_const_cb
151
990k
                                                           : (ASN1_aux_const_cb *)aux->asn1_cb; /* backward compatibility */
152
990k
    }
153
154
7.49M
    if (((it->itype != ASN1_ITYPE_PRIMITIVE)
155
4.89M
            || (it->utype != V_ASN1_BOOLEAN))
156
7.47M
        && *fld == NULL) {
157
2.61M
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT) {
158
2.61M
            if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
159
0
                return 0;
160
2.61M
            if (BIO_puts(out, "<ABSENT>\n") <= 0)
161
0
                return 0;
162
2.61M
        }
163
2.61M
        return 1;
164
2.61M
    }
165
166
4.87M
    switch (it->itype) {
167
3.41M
    case ASN1_ITYPE_PRIMITIVE:
168
3.41M
        if (it->templates) {
169
105k
            if (!asn1_template_print_ctx(out, fld, indent,
170
105k
                    it->templates, pctx))
171
5.23k
                return 0;
172
99.9k
            break;
173
105k
        }
174
        /* fall through */
175
3.37M
    case ASN1_ITYPE_MSTRING:
176
3.37M
        if (!asn1_primitive_print(out, fld, it, indent, fname, sname, pctx))
177
36.8k
            return 0;
178
3.33M
        break;
179
180
3.33M
    case ASN1_ITYPE_EXTERN:
181
138k
        if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
182
0
            return 0;
183
        /* Use new style print routine if possible */
184
138k
        ef = it->funcs;
185
138k
        if (ef && ef->asn1_ex_print) {
186
138k
            i = ef->asn1_ex_print(out, fld, indent, "", pctx);
187
138k
            if (!i)
188
859
                return 0;
189
137k
            if ((i == 2) && (BIO_puts(out, "\n") <= 0))
190
0
                return 0;
191
137k
            return 1;
192
137k
        } else if (sname && BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0)
193
0
            return 0;
194
0
        break;
195
196
225k
    case ASN1_ITYPE_CHOICE:
197
        /* CHOICE type, get selector */
198
225k
        i = ossl_asn1_get_choice_selector_const(fld, it);
199
        /* This should never happen... */
200
225k
        if ((i < 0) || (i >= it->tcount)) {
201
0
            if (BIO_printf(out, "ERROR: selector [%d] invalid\n", i) <= 0)
202
0
                return 0;
203
0
            return 1;
204
0
        }
205
225k
        tt = it->templates + i;
206
225k
        tmpfld = ossl_asn1_get_const_field_ptr(fld, tt);
207
225k
        if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx))
208
12.5k
            return 0;
209
212k
        break;
210
211
1.02M
    case ASN1_ITYPE_SEQUENCE:
212
1.04M
    case ASN1_ITYPE_NDEF_SEQUENCE:
213
1.04M
        if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
214
0
            return 0;
215
1.04M
        if (fname || sname) {
216
603k
            if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
217
102k
                if (BIO_puts(out, " {\n") <= 0)
218
0
                    return 0;
219
501k
            } else {
220
501k
                if (BIO_puts(out, "\n") <= 0)
221
0
                    return 0;
222
501k
            }
223
603k
        }
224
225
1.04M
        if (asn1_cb) {
226
90.5k
            i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg);
227
90.5k
            if (i == 0)
228
0
                return 0;
229
90.5k
            if (i == 2)
230
0
                return 1;
231
90.5k
        }
232
233
        /* Print each field entry */
234
5.59M
        for (i = 0, tt = it->templates; i < it->tcount; i++, tt++) {
235
4.60M
            const ASN1_TEMPLATE *seqtt;
236
4.60M
            seqtt = ossl_asn1_do_adb(*fld, tt, 1);
237
4.60M
            if (!seqtt)
238
0
                return 0;
239
4.60M
            tmpfld = ossl_asn1_get_const_field_ptr(fld, seqtt);
240
4.60M
            if (!asn1_template_print_ctx(out, tmpfld,
241
4.60M
                    indent + 2, seqtt, pctx))
242
51.7k
                return 0;
243
4.60M
        }
244
988k
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
245
196k
            if (BIO_printf(out, "%*s}\n", indent, "") < 0)
246
0
                return 0;
247
196k
        }
248
249
988k
        if (asn1_cb) {
250
64.8k
            i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg);
251
64.8k
            if (i == 0)
252
0
                return 0;
253
64.8k
        }
254
988k
        break;
255
256
988k
    default:
257
0
        BIO_printf(out, "Unprocessed type %d\n", it->itype);
258
0
        return 0;
259
4.87M
    }
260
261
4.63M
    return 1;
262
4.87M
}
263
264
static int asn1_template_print_ctx(BIO *out, const ASN1_VALUE **fld, int indent,
265
    const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx)
266
4.93M
{
267
4.93M
    int i, flags;
268
4.93M
    const char *sname, *fname;
269
4.93M
    const ASN1_VALUE *tfld;
270
4.93M
    flags = tt->flags;
271
4.93M
    if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME)
272
710k
        sname = ASN1_ITEM_ptr(tt->item)->sname;
273
4.22M
    else
274
4.22M
        sname = NULL;
275
4.93M
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
276
0
        fname = NULL;
277
4.93M
    else
278
4.93M
        fname = tt->field_name;
279
280
    /*
281
     * If field is embedded then fld needs fixing so it is a pointer to
282
     * a pointer to a field.
283
     */
284
4.93M
    if (flags & ASN1_TFLG_EMBED) {
285
67.6k
        tfld = (const ASN1_VALUE *)fld;
286
67.6k
        fld = &tfld;
287
67.6k
    }
288
289
4.93M
    if (flags & ASN1_TFLG_SK_MASK) {
290
542k
        char *tname;
291
542k
        const ASN1_VALUE *skitem;
292
542k
        STACK_OF(const_ASN1_VALUE) *stack;
293
294
        /* SET OF, SEQUENCE OF */
295
542k
        if (fname) {
296
542k
            if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF) {
297
138k
                if (flags & ASN1_TFLG_SET_OF)
298
25.2k
                    tname = "SET";
299
112k
                else
300
112k
                    tname = "SEQUENCE";
301
138k
                if (BIO_printf(out, "%*s%s OF %s {\n",
302
138k
                        indent, "", tname, tt->field_name)
303
138k
                    <= 0)
304
0
                    return 0;
305
404k
            } else if (BIO_printf(out, "%*s%s:\n", indent, "", fname) <= 0)
306
0
                return 0;
307
542k
        }
308
542k
        stack = (STACK_OF(const_ASN1_VALUE) *)*fld;
309
3.24M
        for (i = 0; i < sk_const_ASN1_VALUE_num(stack); i++) {
310
2.71M
            if ((i > 0) && (BIO_puts(out, "\n") <= 0))
311
0
                return 0;
312
313
2.71M
            skitem = sk_const_ASN1_VALUE_value(stack, i);
314
2.71M
            if (!asn1_item_print_ctx(out, &skitem, indent + 2,
315
2.71M
                    ASN1_ITEM_ptr(tt->item), NULL, NULL, 1,
316
2.71M
                    pctx))
317
8.92k
                return 0;
318
2.71M
        }
319
533k
        if (i == 0 && BIO_printf(out, "%*s<%s>\n", indent + 2, "", stack == NULL ? "ABSENT" : "EMPTY") <= 0)
320
0
            return 0;
321
533k
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE) {
322
133k
            if (BIO_printf(out, "%*s}\n", indent, "") <= 0)
323
0
                return 0;
324
133k
        }
325
533k
        return 1;
326
533k
    }
327
4.39M
    return asn1_item_print_ctx(out, fld, indent, ASN1_ITEM_ptr(tt->item),
328
4.39M
        fname, sname, 0, pctx);
329
4.93M
}
330
331
static int asn1_print_fsname(BIO *out, int indent,
332
    const char *fname, const char *sname,
333
    const ASN1_PCTX *pctx)
334
6.73M
{
335
6.73M
    static const char spaces[] = "                    ";
336
6.73M
    static const int nspaces = sizeof(spaces) - 1;
337
338
6.77M
    while (indent > nspaces) {
339
47.1k
        if (BIO_write(out, spaces, nspaces) != nspaces)
340
0
            return 0;
341
47.1k
        indent -= nspaces;
342
47.1k
    }
343
6.73M
    if (BIO_write(out, spaces, indent) != indent)
344
0
        return 0;
345
6.73M
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
346
0
        sname = NULL;
347
6.73M
    if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
348
0
        fname = NULL;
349
6.73M
    if (!sname && !fname)
350
2.20M
        return 1;
351
4.52M
    if (fname) {
352
4.18M
        if (BIO_puts(out, fname) <= 0)
353
0
            return 0;
354
4.18M
    }
355
4.52M
    if (sname) {
356
899k
        if (fname) {
357
562k
            if (BIO_printf(out, " (%s)", sname) <= 0)
358
0
                return 0;
359
562k
        } else {
360
337k
            if (BIO_puts(out, sname) <= 0)
361
0
                return 0;
362
337k
        }
363
899k
    }
364
4.52M
    if (BIO_write(out, ": ", 2) != 2)
365
0
        return 0;
366
4.52M
    return 1;
367
4.52M
}
368
369
static int asn1_print_boolean(BIO *out, int boolval)
370
28.1k
{
371
28.1k
    const char *str;
372
28.1k
    switch (boolval) {
373
4.38k
    case -1:
374
4.38k
        str = "BOOL ABSENT";
375
4.38k
        break;
376
377
12.4k
    case 0:
378
12.4k
        str = "FALSE";
379
12.4k
        break;
380
381
11.3k
    default:
382
11.3k
        str = "TRUE";
383
11.3k
        break;
384
28.1k
    }
385
386
28.1k
    if (BIO_puts(out, str) <= 0)
387
0
        return 0;
388
28.1k
    return 1;
389
28.1k
}
390
391
static int asn1_print_integer(BIO *out, const ASN1_INTEGER *str)
392
2.05M
{
393
2.05M
    char *s;
394
2.05M
    int ret = 1;
395
2.05M
    s = i2s_ASN1_INTEGER(NULL, str);
396
2.05M
    if (s == NULL)
397
468
        return 0;
398
2.05M
    if (BIO_puts(out, s) <= 0)
399
0
        ret = 0;
400
2.05M
    OPENSSL_free(s);
401
2.05M
    return ret;
402
2.05M
}
403
404
static int asn1_print_oid(BIO *out, const ASN1_OBJECT *oid)
405
354k
{
406
354k
    char objbuf[80];
407
354k
    const char *ln;
408
354k
    ln = OBJ_nid2ln(OBJ_obj2nid(oid));
409
354k
    if (!ln)
410
0
        ln = "";
411
354k
    OBJ_obj2txt(objbuf, sizeof(objbuf), oid, 1);
412
354k
    if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0)
413
0
        return 0;
414
354k
    return 1;
415
354k
}
416
417
static int asn1_print_obstring(BIO *out, const ASN1_STRING *str, int indent)
418
223k
{
419
223k
    if (str->type == V_ASN1_BIT_STRING) {
420
106k
        if (BIO_printf(out, " (%ld unused bits)\n", str->flags & 0x7) <= 0)
421
0
            return 0;
422
116k
    } else if (BIO_puts(out, "\n") <= 0)
423
0
        return 0;
424
223k
    if ((str->length > 0)
425
134k
        && BIO_dump_indent(out, (const char *)str->data, str->length,
426
134k
               indent + 2)
427
134k
            <= 0)
428
0
        return 0;
429
223k
    return 1;
430
223k
}
431
432
static int asn1_primitive_print(BIO *out, const ASN1_VALUE **fld,
433
    const ASN1_ITEM *it, int indent,
434
    const char *fname, const char *sname,
435
    const ASN1_PCTX *pctx)
436
3.37M
{
437
3.37M
    long utype;
438
3.37M
    ASN1_STRING *str;
439
3.37M
    int ret = 1, needlf = 1;
440
3.37M
    const char *pname;
441
3.37M
    const ASN1_PRIMITIVE_FUNCS *pf;
442
3.37M
    pf = it->funcs;
443
3.37M
    if (!asn1_print_fsname(out, indent, fname, sname, pctx))
444
0
        return 0;
445
3.37M
    if (pf && pf->prim_print)
446
125k
        return pf->prim_print(out, fld, it, indent, pctx);
447
3.24M
    if (it->itype == ASN1_ITYPE_MSTRING) {
448
60.0k
        str = (ASN1_STRING *)*fld;
449
60.0k
        utype = str->type & ~V_ASN1_NEG;
450
3.18M
    } else {
451
3.18M
        utype = it->utype;
452
3.18M
        if (utype == V_ASN1_BOOLEAN)
453
22.9k
            str = NULL;
454
3.16M
        else
455
3.16M
            str = (ASN1_STRING *)*fld;
456
3.18M
    }
457
3.24M
    if (utype == V_ASN1_ANY) {
458
550k
        const ASN1_TYPE *atype = (const ASN1_TYPE *)*fld;
459
550k
        utype = atype->type;
460
550k
        fld = (const ASN1_VALUE **)&atype->value.asn1_value; /* actually is const */
461
550k
        str = (ASN1_STRING *)*fld;
462
550k
        if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE)
463
0
            pname = NULL;
464
550k
        else
465
550k
            pname = ASN1_tag2str(utype);
466
2.69M
    } else {
467
2.69M
        if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE)
468
349k
            pname = ASN1_tag2str(utype);
469
2.34M
        else
470
2.34M
            pname = NULL;
471
2.69M
    }
472
473
3.24M
    if (utype == V_ASN1_NULL) {
474
27.3k
        if (BIO_puts(out, "NULL\n") <= 0)
475
0
            return 0;
476
27.3k
        return 1;
477
27.3k
    }
478
479
3.21M
    if (pname) {
480
873k
        if (BIO_puts(out, pname) <= 0)
481
0
            return 0;
482
873k
        if (BIO_puts(out, ":") <= 0)
483
0
            return 0;
484
873k
    }
485
486
3.21M
    switch (utype) {
487
28.1k
    case V_ASN1_BOOLEAN: {
488
28.1k
        int boolval = *(int *)fld;
489
28.1k
        if (boolval == -1)
490
4.38k
            boolval = it->size;
491
28.1k
        ret = asn1_print_boolean(out, boolval);
492
28.1k
    } break;
493
494
2.05M
    case V_ASN1_INTEGER:
495
2.05M
    case V_ASN1_ENUMERATED:
496
2.05M
        ret = asn1_print_integer(out, str);
497
2.05M
        break;
498
499
17.7k
    case V_ASN1_UTCTIME:
500
17.7k
        ret = ASN1_UTCTIME_print(out, str);
501
17.7k
        break;
502
503
18.4k
    case V_ASN1_GENERALIZEDTIME:
504
18.4k
        ret = ASN1_GENERALIZEDTIME_print(out, str);
505
18.4k
        break;
506
507
354k
    case V_ASN1_OBJECT:
508
354k
        ret = asn1_print_oid(out, (const ASN1_OBJECT *)*fld);
509
354k
        break;
510
511
116k
    case V_ASN1_OCTET_STRING:
512
223k
    case V_ASN1_BIT_STRING:
513
223k
        ret = asn1_print_obstring(out, str, indent);
514
223k
        needlf = 0;
515
223k
        break;
516
517
324k
    case V_ASN1_SEQUENCE:
518
364k
    case V_ASN1_SET:
519
444k
    case V_ASN1_OTHER:
520
444k
        if (BIO_puts(out, "\n") <= 0)
521
0
            return 0;
522
444k
        if (ASN1_parse_dump(out, str->data, str->length, indent, 0) <= 0)
523
16.7k
            ret = 0;
524
444k
        needlf = 0;
525
444k
        break;
526
527
73.5k
    default:
528
73.5k
        ret = ASN1_STRING_print_ex(out, str, pctx->str_flags);
529
3.21M
    }
530
3.21M
    if (!ret)
531
36.8k
        return 0;
532
3.18M
    if (needlf && BIO_puts(out, "\n") <= 0)
533
0
        return 0;
534
3.18M
    return 1;
535
3.18M
}