1 /* 2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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 <stdio.h> 11 #include "crypto/ctype.h" 12 #include "internal/cryptlib.h" 13 #include <openssl/asn1.h> 14 15 int ASN1_PRINTABLE_type(const unsigned char *s, int len) 16 { 17 int c; 18 int ia5 = 0; 19 int t61 = 0; 20 21 if (s == NULL) 22 return V_ASN1_PRINTABLESTRING; 23 24 if (len < 0) 25 len = strlen((const char *)s); 26 27 while (len-- > 0) { 28 c = *(s++); 29 if (!ossl_isasn1print(c)) 30 ia5 = 1; 31 if (!ossl_isascii(c)) 32 t61 = 1; 33 } 34 if (t61) 35 return V_ASN1_T61STRING; 36 if (ia5) 37 return V_ASN1_IA5STRING; 38 return V_ASN1_PRINTABLESTRING; 39 } 40 41 int ASN1_UNIVERSALSTRING_to_string(ASN1_UNIVERSALSTRING *s) 42 { 43 int i; 44 unsigned char *p; 45 46 if (s->type != V_ASN1_UNIVERSALSTRING) 47 return 0; 48 if ((s->length % 4) != 0) 49 return 0; 50 p = s->data; 51 for (i = 0; i < s->length; i += 4) { 52 if ((p[0] != '\0') || (p[1] != '\0') || (p[2] != '\0')) 53 break; 54 else 55 p += 4; 56 } 57 if (i < s->length) 58 return 0; 59 p = s->data; 60 for (i = 3; i < s->length; i += 4) { 61 *(p++) = s->data[i]; 62 } 63 *(p) = '\0'; 64 s->length /= 4; 65 s->type = ASN1_PRINTABLE_type(s->data, s->length); 66 return 1; 67 } 68 69 int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v) 70 { 71 int i, n; 72 char buf[80]; 73 const char *p; 74 75 if (v == NULL) 76 return 0; 77 n = 0; 78 p = (const char *)v->data; 79 for (i = 0; i < v->length; i++) { 80 if ((p[i] > '~') || ((p[i] < ' ') && 81 (p[i] != '\n') && (p[i] != '\r'))) 82 buf[n] = '.'; 83 else 84 buf[n] = p[i]; 85 n++; 86 if (n >= 80) { 87 if (BIO_write(bp, buf, n) <= 0) 88 return 0; 89 n = 0; 90 } 91 } 92 if (n > 0) 93 if (BIO_write(bp, buf, n) <= 0) 94 return 0; 95 return 1; 96 } 97