1 /* 2 * Copyright 1995-2017 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 (len <= 0) 22 len = -1; 23 if (s == NULL) 24 return V_ASN1_PRINTABLESTRING; 25 26 while ((*s) && (len-- != 0)) { 27 c = *(s++); 28 if (!ossl_isasn1print(c)) 29 ia5 = 1; 30 if (!ossl_isascii(c)) 31 t61 = 1; 32 } 33 if (t61) 34 return V_ASN1_T61STRING; 35 if (ia5) 36 return V_ASN1_IA5STRING; 37 return V_ASN1_PRINTABLESTRING; 38 } 39 40 int ASN1_UNIVERSALSTRING_to_string(ASN1_UNIVERSALSTRING *s) 41 { 42 int i; 43 unsigned char *p; 44 45 if (s->type != V_ASN1_UNIVERSALSTRING) 46 return 0; 47 if ((s->length % 4) != 0) 48 return 0; 49 p = s->data; 50 for (i = 0; i < s->length; i += 4) { 51 if ((p[0] != '\0') || (p[1] != '\0') || (p[2] != '\0')) 52 break; 53 else 54 p += 4; 55 } 56 if (i < s->length) 57 return 0; 58 p = s->data; 59 for (i = 3; i < s->length; i += 4) { 60 *(p++) = s->data[i]; 61 } 62 *(p) = '\0'; 63 s->length /= 4; 64 s->type = ASN1_PRINTABLE_type(s->data, s->length); 65 return 1; 66 } 67 68 int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v) 69 { 70 int i, n; 71 char buf[80]; 72 const char *p; 73 74 if (v == NULL) 75 return 0; 76 n = 0; 77 p = (const char *)v->data; 78 for (i = 0; i < v->length; i++) { 79 if ((p[i] > '~') || ((p[i] < ' ') && 80 (p[i] != '\n') && (p[i] != '\r'))) 81 buf[n] = '.'; 82 else 83 buf[n] = p[i]; 84 n++; 85 if (n >= 80) { 86 if (BIO_write(bp, buf, n) <= 0) 87 return 0; 88 n = 0; 89 } 90 } 91 if (n > 0) 92 if (BIO_write(bp, buf, n) <= 0) 93 return 0; 94 return 1; 95 } 96