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f_int.c

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1/* $OpenBSD: f_int.c,v 1.20 2018/05/13 13:48:08 jsing Exp $ */-
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)-
3 * All rights reserved.-
4 *-
5 * This package is an SSL implementation written-
6 * by Eric Young (eay@cryptsoft.com).-
7 * The implementation was written so as to conform with Netscapes SSL.-
8 *-
9 * This library is free for commercial and non-commercial use as long as-
10 * the following conditions are aheared to. The following conditions-
11 * apply to all code found in this distribution, be it the RC4, RSA,-
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation-
13 * included with this distribution is covered by the same copyright terms-
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).-
15 *-
16 * Copyright remains Eric Young's, and as such any Copyright notices in-
17 * the code are not to be removed.-
18 * If this package is used in a product, Eric Young should be given attribution-
19 * as the author of the parts of the library used.-
20 * This can be in the form of a textual message at program startup or-
21 * in documentation (online or textual) provided with the package.-
22 *-
23 * Redistribution and use in source and binary forms, with or without-
24 * modification, are permitted provided that the following conditions-
25 * are met:-
26 * 1. Redistributions of source code must retain the copyright-
27 * notice, this list of conditions and the following disclaimer.-
28 * 2. Redistributions in binary form must reproduce the above copyright-
29 * notice, this list of conditions and the following disclaimer in the-
30 * documentation and/or other materials provided with the distribution.-
31 * 3. All advertising materials mentioning features or use of this software-
32 * must display the following acknowledgement:-
33 * "This product includes cryptographic software written by-
34 * Eric Young (eay@cryptsoft.com)"-
35 * The word 'cryptographic' can be left out if the rouines from the library-
36 * being used are not cryptographic related :-).-
37 * 4. If you include any Windows specific code (or a derivative thereof) from-
38 * the apps directory (application code) you must include an acknowledgement:-
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"-
40 *-
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND-
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE-
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE-
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE-
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL-
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS-
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)-
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT-
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY-
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF-
51 * SUCH DAMAGE.-
52 *-
53 * The licence and distribution terms for any publically available version or-
54 * derivative of this code cannot be changed. i.e. this code cannot simply be-
55 * copied and put under another distribution licence-
56 * [including the GNU Public Licence.]-
57 */-
58-
59#include <stdio.h>-
60-
61#include <openssl/asn1.h>-
62#include <openssl/buffer.h>-
63#include <openssl/err.h>-
64-
65int-
66i2a_ASN1_INTEGER(BIO *bp, const ASN1_INTEGER *a)-
67{-
68 int i, n = 0;-
69 static const char h[] = "0123456789ABCDEF";-
70 char buf[2];-
71-
72 if (a == NULL)
a == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
73 return (0);
never executed: return (0);
0
74-
75 if (a->type & V_ASN1_NEG) {
a->type & 0x100Description
TRUEnever evaluated
FALSEnever evaluated
0
76 if (BIO_write(bp, "-", 1) != 1)
BIO_write(bp, "-", 1) != 1Description
TRUEnever evaluated
FALSEnever evaluated
0
77 goto err;
never executed: goto err;
0
78 n = 1;-
79 }
never executed: end of block
0
80-
81 if (a->length == 0) {
a->length == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
82 if (BIO_write(bp, "00", 2) != 2)
BIO_write(bp, "00", 2) != 2Description
TRUEnever evaluated
FALSEnever evaluated
0
83 goto err;
never executed: goto err;
0
84 n += 2;-
85 } else {
never executed: end of block
0
86 for (i = 0; i < a->length; i++) {
i < a->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
87 if ((i != 0) && (i % 35 == 0)) {
(i != 0)Description
TRUEnever evaluated
FALSEnever evaluated
(i % 35 == 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
88 if (BIO_write(bp, "\\\n", 2) != 2)
BIO_write(bp, "\\\n", 2) != 2Description
TRUEnever evaluated
FALSEnever evaluated
0
89 goto err;
never executed: goto err;
0
90 n += 2;-
91 }
never executed: end of block
0
92 buf[0] = h[((unsigned char)a->data[i] >> 4) & 0x0f];-
93 buf[1] = h[((unsigned char)a->data[i]) & 0x0f];-
94 if (BIO_write(bp, buf, 2) != 2)
BIO_write(bp, buf, 2) != 2Description
TRUEnever evaluated
FALSEnever evaluated
0
95 goto err;
never executed: goto err;
0
96 n += 2;-
97 }
never executed: end of block
0
98 }
never executed: end of block
0
99 return (n);
never executed: return (n);
0
100-
101err:-
102 return (-1);
never executed: return (-1);
0
103}-
104-
105int-
106a2i_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *bs, char *buf, int size)-
107{-
108 int ret = 0;-
109 int i, j,k, m,n, again, bufsize;-
110 unsigned char *s = NULL, *sp;-
111 unsigned char *bufp;-
112 int num = 0, slen = 0, first = 1;-
113-
114 bs->type = V_ASN1_INTEGER;-
115-
116 bufsize = BIO_gets(bp, buf, size);-
117 for (;;) {-
118 if (bufsize < 1)
bufsize < 1Description
TRUEnever evaluated
FALSEnever evaluated
0
119 goto err_sl;
never executed: goto err_sl;
0
120 i = bufsize;-
121 if (buf[i - 1] == '\n')
buf[i - 1] == '\n'Description
TRUEnever evaluated
FALSEnever evaluated
0
122 buf[--i] = '\0';
never executed: buf[--i] = '\0';
0
123 if (i == 0)
i == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
124 goto err_sl;
never executed: goto err_sl;
0
125 if (buf[i - 1] == '\r')
buf[i - 1] == '\r'Description
TRUEnever evaluated
FALSEnever evaluated
0
126 buf[--i] = '\0';
never executed: buf[--i] = '\0';
0
127 if (i == 0)
i == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
128 goto err_sl;
never executed: goto err_sl;
0
129 again = (buf[i - 1] == '\\');-
130-
131 for (j = 0; j < i; j++) {
j < iDescription
TRUEnever evaluated
FALSEnever evaluated
0
132 if (!(((buf[j] >= '0') && (buf[j] <= '9')) ||
(buf[j] >= '0')Description
TRUEnever evaluated
FALSEnever evaluated
(buf[j] <= '9')Description
TRUEnever evaluated
FALSEnever evaluated
0
133 ((buf[j] >= 'a') && (buf[j] <= 'f')) ||
(buf[j] >= 'a')Description
TRUEnever evaluated
FALSEnever evaluated
(buf[j] <= 'f')Description
TRUEnever evaluated
FALSEnever evaluated
0
134 ((buf[j] >= 'A') && (buf[j] <= 'F')))) {
(buf[j] >= 'A')Description
TRUEnever evaluated
FALSEnever evaluated
(buf[j] <= 'F')Description
TRUEnever evaluated
FALSEnever evaluated
0
135 i = j;-
136 break;
never executed: break;
0
137 }-
138 }
never executed: end of block
0
139 buf[i] = '\0';-
140 /* We have now cleared all the crap off the end of the-
141 * line */-
142 if (i < 2)
i < 2Description
TRUEnever evaluated
FALSEnever evaluated
0
143 goto err_sl;
never executed: goto err_sl;
0
144-
145 bufp = (unsigned char *)buf;-
146 if (first) {
firstDescription
TRUEnever evaluated
FALSEnever evaluated
0
147 first = 0;-
148 if ((bufp[0] == '0') && (buf[1] == '0')) {
(bufp[0] == '0')Description
TRUEnever evaluated
FALSEnever evaluated
(buf[1] == '0')Description
TRUEnever evaluated
FALSEnever evaluated
0
149 bufp += 2;-
150 i -= 2;-
151 }
never executed: end of block
0
152 }
never executed: end of block
0
153 k = 0;-
154 i -= again;-
155 if (i % 2 != 0) {
i % 2 != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
156 ASN1error(ASN1_R_ODD_NUMBER_OF_CHARS);-
157 goto err;
never executed: goto err;
0
158 }-
159 i /= 2;-
160 if (num + i > slen) {
num + i > slenDescription
TRUEnever evaluated
FALSEnever evaluated
0
161 if ((sp = recallocarray(s, slen, num + i, 1)) == NULL) {
(sp = recalloc...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
162 ASN1error(ERR_R_MALLOC_FAILURE);-
163 goto err;
never executed: goto err;
0
164 }-
165 s = sp;-
166 slen = num + i;-
167 }
never executed: end of block
0
168 for (j = 0; j < i; j++, k += 2) {
j < iDescription
TRUEnever evaluated
FALSEnever evaluated
0
169 for (n = 0; n < 2; n++) {
n < 2Description
TRUEnever evaluated
FALSEnever evaluated
0
170 m = bufp[k + n];-
171 if ((m >= '0') && (m <= '9'))
(m >= '0')Description
TRUEnever evaluated
FALSEnever evaluated
(m <= '9')Description
TRUEnever evaluated
FALSEnever evaluated
0
172 m -= '0';
never executed: m -= '0';
0
173 else if ((m >= 'a') && (m <= 'f'))
(m >= 'a')Description
TRUEnever evaluated
FALSEnever evaluated
(m <= 'f')Description
TRUEnever evaluated
FALSEnever evaluated
0
174 m = m - 'a' + 10;
never executed: m = m - 'a' + 10;
0
175 else if ((m >= 'A') && (m <= 'F'))
(m >= 'A')Description
TRUEnever evaluated
FALSEnever evaluated
(m <= 'F')Description
TRUEnever evaluated
FALSEnever evaluated
0
176 m = m - 'A' + 10;
never executed: m = m - 'A' + 10;
0
177 else {-
178 ASN1error(ASN1_R_NON_HEX_CHARACTERS);-
179 goto err;
never executed: goto err;
0
180 }-
181 s[num + j] <<= 4;-
182 s[num + j] |= m;-
183 }
never executed: end of block
0
184 }
never executed: end of block
0
185 num += i;-
186 if (again)
againDescription
TRUEnever evaluated
FALSEnever evaluated
0
187 bufsize = BIO_gets(bp, buf, size);
never executed: bufsize = BIO_gets(bp, buf, size);
0
188 else-
189 break;
never executed: break;
0
190 }-
191 bs->length = num;-
192 bs->data = s;-
193 return (1);
never executed: return (1);
0
194-
195err_sl:-
196 ASN1error(ASN1_R_SHORT_LINE);-
197err:
code before this statement never executed: err:
0
198 free(s);-
199 return (ret);
never executed: return (ret);
0
200}-
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