5  *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
28 int mbedtls_asn1_get_len(unsigned char **p,  in mbedtls_asn1_get_len()  argument
32     if ((end - *p) < 1) {  in mbedtls_asn1_get_len()
36     if ((**p & 0x80) == 0) {  in mbedtls_asn1_get_len()
37         *len = *(*p)++;  in mbedtls_asn1_get_len()
39         int n = (**p) & 0x7F;  in mbedtls_asn1_get_len()
43         if ((end - *p) <= n) {  in mbedtls_asn1_get_len()
47         (*p)++;  in mbedtls_asn1_get_len()
48         while (n--) {  in mbedtls_asn1_get_len()
49             *len = (*len << 8) | **p;  in mbedtls_asn1_get_len()
50             (*p)++;  in mbedtls_asn1_get_len()
54     if (*len > (size_t) (end - *p)) {  in mbedtls_asn1_get_len()
61 int mbedtls_asn1_get_tag(unsigned char **p,  in mbedtls_asn1_get_tag()  argument
65     if ((end - *p) < 1) {  in mbedtls_asn1_get_tag()
69     if (**p != tag) {  in mbedtls_asn1_get_tag()
73     (*p)++;  in mbedtls_asn1_get_tag()
75     return mbedtls_asn1_get_len(p, end, len);  in mbedtls_asn1_get_tag()
80 int mbedtls_asn1_get_bool(unsigned char **p,  in mbedtls_asn1_get_bool()  argument
87     if ((ret = mbedtls_asn1_get_tag(p, end, &len, MBEDTLS_ASN1_BOOLEAN)) != 0) {  in mbedtls_asn1_get_bool()
95     *val = (**p != 0) ? 1 : 0;  in mbedtls_asn1_get_bool()
96     (*p)++;  in mbedtls_asn1_get_bool()
101 static int asn1_get_tagged_int(unsigned char **p,  in asn1_get_tagged_int()  argument
108     if ((ret = mbedtls_asn1_get_tag(p, end, &len, tag)) != 0) {  in asn1_get_tagged_int()
120     if ((**p & 0x80) != 0) {  in asn1_get_tagged_int()
125     while (len > 0 && **p == 0) {  in asn1_get_tagged_int()
126         ++(*p);  in asn1_get_tagged_int()
127         --len;  in asn1_get_tagged_int()
135     if (len == sizeof(int) && (**p & 0x80) != 0) {  in asn1_get_tagged_int()
140     while (len-- > 0) {  in asn1_get_tagged_int()
141         *val = (*val << 8) | **p;  in asn1_get_tagged_int()
142         (*p)++;  in asn1_get_tagged_int()
148 int mbedtls_asn1_get_int(unsigned char **p,  in mbedtls_asn1_get_int()  argument
152     return asn1_get_tagged_int(p, end, MBEDTLS_ASN1_INTEGER, val);  in mbedtls_asn1_get_int()
155 int mbedtls_asn1_get_enum(unsigned char **p,  in mbedtls_asn1_get_enum()  argument
159     return asn1_get_tagged_int(p, end, MBEDTLS_ASN1_ENUMERATED, val);  in mbedtls_asn1_get_enum()
163 int mbedtls_asn1_get_mpi(unsigned char **p,  in mbedtls_asn1_get_mpi()  argument
170     if ((ret = mbedtls_asn1_get_tag(p, end, &len, MBEDTLS_ASN1_INTEGER)) != 0) {  in mbedtls_asn1_get_mpi()
174     ret = mbedtls_mpi_read_binary(X, *p, len);  in mbedtls_asn1_get_mpi()
176     *p += len;  in mbedtls_asn1_get_mpi()
182 int mbedtls_asn1_get_bitstring(unsigned char **p, const unsigned char *end,  in mbedtls_asn1_get_bitstring()  argument
188     if ((ret = mbedtls_asn1_get_tag(p, end, &bs->len, MBEDTLS_ASN1_BIT_STRING)) != 0) {  in mbedtls_asn1_get_bitstring()
193     if (bs->len < 1) {  in mbedtls_asn1_get_bitstring()
196     bs->len -= 1;  in mbedtls_asn1_get_bitstring()
199     bs->unused_bits = **p;  in mbedtls_asn1_get_bitstring()
200     if (bs->unused_bits > 7) {  in mbedtls_asn1_get_bitstring()
203     (*p)++;  in mbedtls_asn1_get_bitstring()
206     bs->p = *p;  in mbedtls_asn1_get_bitstring()
207     *p += bs->len;  in mbedtls_asn1_get_bitstring()
209     if (*p != end) {  in mbedtls_asn1_get_bitstring()
221     unsigned char **p,  in mbedtls_asn1_traverse_sequence_of()  argument
233     if ((ret = mbedtls_asn1_get_tag(p, end, &len,  in mbedtls_asn1_traverse_sequence_of()
238     if (*p + len != end) {  in mbedtls_asn1_traverse_sequence_of()
242     while (*p < end) {  in mbedtls_asn1_traverse_sequence_of()
243         unsigned char const tag = *(*p)++;  in mbedtls_asn1_traverse_sequence_of()
249         if ((ret = mbedtls_asn1_get_len(p, end, &len)) != 0) {  in mbedtls_asn1_traverse_sequence_of()
255                 ret = cb(ctx, tag, *p, len);  in mbedtls_asn1_traverse_sequence_of()
262         *p += len;  in mbedtls_asn1_traverse_sequence_of()
271 int mbedtls_asn1_get_bitstring_null(unsigned char **p, const unsigned char *end,  in mbedtls_asn1_get_bitstring_null()  argument
276     if ((ret = mbedtls_asn1_get_tag(p, end, len, MBEDTLS_ASN1_BIT_STRING)) != 0) {  in mbedtls_asn1_get_bitstring_null()
283     --(*len);  in mbedtls_asn1_get_bitstring_null()
285     if (**p != 0) {  in mbedtls_asn1_get_bitstring_null()
288     ++(*p);  in mbedtls_asn1_get_bitstring_null()
296         mbedtls_asn1_sequence *next = seq->next;  in mbedtls_asn1_sequence_free()
315         cb_ctx->cur;  in asn1_get_sequence_of_cb()
317     if (cur->buf.p != NULL) {  in asn1_get_sequence_of_cb()
318         cur->next =  in asn1_get_sequence_of_cb()
321         if (cur->next == NULL) {  in asn1_get_sequence_of_cb()
325         cur = cur->next;  in asn1_get_sequence_of_cb()
328     cur->buf.p = start;  in asn1_get_sequence_of_cb()
329     cur->buf.len = len;  in asn1_get_sequence_of_cb()
330     cur->buf.tag = tag;  in asn1_get_sequence_of_cb()
332     cb_ctx->cur = cur;  in asn1_get_sequence_of_cb()
339 int mbedtls_asn1_get_sequence_of(unsigned char **p,  in mbedtls_asn1_get_sequence_of()  argument
347         p, end, 0xFF, tag, 0, 0,  in mbedtls_asn1_get_sequence_of()
351 int mbedtls_asn1_get_alg(unsigned char **p,  in mbedtls_asn1_get_alg()  argument
358     if ((ret = mbedtls_asn1_get_tag(p, end, &len,  in mbedtls_asn1_get_alg()
363     if ((end - *p) < 1) {  in mbedtls_asn1_get_alg()
367     alg->tag = **p;  in mbedtls_asn1_get_alg()
368     end = *p + len;  in mbedtls_asn1_get_alg()
370     if ((ret = mbedtls_asn1_get_tag(p, end, &alg->len, MBEDTLS_ASN1_OID)) != 0) {  in mbedtls_asn1_get_alg()
374     alg->p = *p;  in mbedtls_asn1_get_alg()
375     *p += alg->len;  in mbedtls_asn1_get_alg()
377     if (*p == end) {  in mbedtls_asn1_get_alg()
382     params->tag = **p;  in mbedtls_asn1_get_alg()
383     (*p)++;  in mbedtls_asn1_get_alg()
385     if ((ret = mbedtls_asn1_get_len(p, end, &params->len)) != 0) {  in mbedtls_asn1_get_alg()
389     params->p = *p;  in mbedtls_asn1_get_alg()
390     *p += params->len;  in mbedtls_asn1_get_alg()
392     if (*p != end) {  in mbedtls_asn1_get_alg()
399 int mbedtls_asn1_get_alg_null(unsigned char **p,  in mbedtls_asn1_get_alg_null()  argument
408     if ((ret = mbedtls_asn1_get_alg(p, end, alg, &params)) != 0) {  in mbedtls_asn1_get_alg_null()
426     mbedtls_free(cur->oid.p);  in mbedtls_asn1_free_named_data()
427     mbedtls_free(cur->val.p);  in mbedtls_asn1_free_named_data()
438         *head = cur->next;  in mbedtls_asn1_free_named_data_list()
439         mbedtls_free(cur->oid.p);  in mbedtls_asn1_free_named_data_list()
440         mbedtls_free(cur->val.p);  in mbedtls_asn1_free_named_data_list()
448         next = name->next;  in mbedtls_asn1_free_named_data_list_shallow()
457         if (list->oid.len == len &&  in mbedtls_asn1_find_named_data()
458             memcmp(list->oid.p, oid, len) == 0) {  in mbedtls_asn1_find_named_data()
462         list = list->next;  in mbedtls_asn1_find_named_data()