1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 #include "internal/cryptlib.h"
60 #include <openssl/buffer.h>
61 #include <openssl/asn1.h>
63 int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a)
66 static const char *h = "0123456789ABCDEF";
72 if (a->type & V_ASN1_NEG) {
73 if (BIO_write(bp, "-", 1) != 1)
79 if (BIO_write(bp, "00", 2) != 2)
83 for (i = 0; i < a->length; i++) {
84 if ((i != 0) && (i % 35 == 0)) {
85 if (BIO_write(bp, "\\\n", 2) != 2)
89 buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];
90 buf[1] = h[((unsigned char)a->data[i]) & 0x0f];
91 if (BIO_write(bp, buf, 2) != 2)
101 int a2i_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *bs, char *buf, int size)
103 int i, j, k, m, n, again, bufsize;
104 unsigned char *s = NULL, *sp;
106 int num = 0, slen = 0, first = 1;
108 bs->type = V_ASN1_INTEGER;
110 bufsize = BIO_gets(bp, buf, size);
115 if (buf[i - 1] == '\n')
119 if (buf[i - 1] == '\r')
123 again = (buf[i - 1] == '\\');
125 for (j = 0; j < i; j++) {
126 #ifndef CHARSET_EBCDIC
127 if (!(((buf[j] >= '0') && (buf[j] <= '9')) ||
128 ((buf[j] >= 'a') && (buf[j] <= 'f')) ||
129 ((buf[j] >= 'A') && (buf[j] <= 'F'))))
132 * This #ifdef is not strictly necessary, since the characters
133 * A...F a...f 0...9 are contiguous (yes, even in EBCDIC - but
134 * not the whole alphabet). Nevertheless, isxdigit() is faster.
136 if (!isxdigit(buf[j]))
145 * We have now cleared all the crap off the end of the line
150 bufp = (unsigned char *)buf;
153 if ((bufp[0] == '0') && (buf[1] == '0')) {
161 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ASN1_R_ODD_NUMBER_OF_CHARS);
165 if (num + i > slen) {
166 sp = OPENSSL_clear_realloc(s, slen, num + i * 2);
168 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ERR_R_MALLOC_FAILURE);
175 for (j = 0; j < i; j++, k += 2) {
176 for (n = 0; n < 2; n++) {
178 if ((m >= '0') && (m <= '9'))
180 else if ((m >= 'a') && (m <= 'f'))
182 else if ((m >= 'A') && (m <= 'F'))
185 ASN1err(ASN1_F_A2I_ASN1_INTEGER,
186 ASN1_R_NON_HEX_CHARACTERS);
195 bufsize = BIO_gets(bp, buf, size);
203 ASN1err(ASN1_F_A2I_ASN1_INTEGER, ASN1_R_SHORT_LINE);
207 int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a)
209 return i2a_ASN1_INTEGER(bp, a);
212 int a2i_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *bs, char *buf, int size)
214 int rv = a2i_ASN1_INTEGER(bp, bs, buf, size);
216 bs->type = V_ASN1_INTEGER | (bs->type & V_ASN1_NEG);