| 1 | /*
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| 2 | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include <stdio.h>
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| 11 | #include "crypto/ctype.h"
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| 12 | #include "internal/cryptlib.h"
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| 13 | #include <openssl/asn1.h>
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| 14 |
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| 15 | int ASN1_PRINTABLE_type(const unsigned char *s, int len)
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| 16 | {
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| 17 | int c;
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| 18 | int ia5 = 0;
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| 19 | int t61 = 0;
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| 20 |
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| 21 | if (s == NULL)
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| 22 | return V_ASN1_PRINTABLESTRING;
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| 23 |
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| 24 | if (len < 0)
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| 25 | len = strlen((const char *)s);
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| 26 |
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| 27 | while (len-- > 0) {
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| 28 | c = *(s++);
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| 29 | if (!ossl_isasn1print(c))
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| 30 | ia5 = 1;
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| 31 | if (!ossl_isascii(c))
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| 32 | t61 = 1;
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| 33 | }
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| 34 | if (t61)
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| 35 | return V_ASN1_T61STRING;
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| 36 | if (ia5)
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| 37 | return V_ASN1_IA5STRING;
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| 38 | return V_ASN1_PRINTABLESTRING;
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| 39 | }
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| 40 |
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| 41 | int ASN1_UNIVERSALSTRING_to_string(ASN1_UNIVERSALSTRING *s)
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| 42 | {
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| 43 | int i;
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| 44 | unsigned char *p;
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| 45 |
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| 46 | if (s->type != V_ASN1_UNIVERSALSTRING)
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| 47 | return 0;
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| 48 | if ((s->length % 4) != 0)
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| 49 | return 0;
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| 50 | p = s->data;
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| 51 | for (i = 0; i < s->length; i += 4) {
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| 52 | if ((p[0] != '\0') || (p[1] != '\0') || (p[2] != '\0'))
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| 53 | break;
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| 54 | else
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| 55 | p += 4;
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| 56 | }
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| 57 | if (i < s->length)
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| 58 | return 0;
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| 59 | p = s->data;
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| 60 | for (i = 3; i < s->length; i += 4) {
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| 61 | *(p++) = s->data[i];
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| 62 | }
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| 63 | *(p) = '\0';
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| 64 | s->length /= 4;
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| 65 | s->type = ASN1_PRINTABLE_type(s->data, s->length);
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| 66 | return 1;
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| 67 | }
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| 68 |
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| 69 | int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
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| 70 | {
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| 71 | int i, n;
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| 72 | char buf[80];
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| 73 | const char *p;
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| 74 |
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| 75 | if (v == NULL)
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| 76 | return 0;
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| 77 | n = 0;
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| 78 | p = (const char *)v->data;
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| 79 | for (i = 0; i < v->length; i++) {
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| 80 | if ((p[i] > '~') || ((p[i] < ' ') &&
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| 81 | (p[i] != '\n') && (p[i] != '\r')))
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| 82 | buf[n] = '.';
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| 83 | else
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| 84 | buf[n] = p[i];
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| 85 | n++;
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| 86 | if (n >= 80) {
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| 87 | if (BIO_write(bp, buf, n) <= 0)
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| 88 | return 0;
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| 89 | n = 0;
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| 90 | }
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| 91 | }
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| 92 | if (n > 0)
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| 93 | if (BIO_write(bp, buf, n) <= 0)
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| 94 | return 0;
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| 95 | return 1;
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| 96 | }
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