1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
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.
7 *
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).
14 *
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.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
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)"
39 *
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
50 * SUCH DAMAGE.
51 *
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.] */
56
57 #include <openssl/asn1.h>
58
59 #include <openssl/err.h>
60 #include <openssl/mem.h>
61
62 /* Based on a_int.c: equivalent ENUMERATED functions */
63
i2a_ASN1_ENUMERATED(BIO * bp,ASN1_ENUMERATED * a)64 int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a)
65 {
66 int i,n=0;
67 static const char *h="0123456789ABCDEF";
68 char buf[2];
69
70 if (a == NULL) return(0);
71
72 if (a->length == 0)
73 {
74 if (BIO_write(bp,"00",2) != 2) goto err;
75 n=2;
76 }
77 else
78 {
79 for (i=0; i<a->length; i++)
80 {
81 if ((i != 0) && (i%35 == 0))
82 {
83 if (BIO_write(bp,"\\\n",2) != 2) goto err;
84 n+=2;
85 }
86 buf[0]=h[((unsigned char)a->data[i]>>4)&0x0f];
87 buf[1]=h[((unsigned char)a->data[i] )&0x0f];
88 if (BIO_write(bp,buf,2) != 2) goto err;
89 n+=2;
90 }
91 }
92 return(n);
93 err:
94 return(-1);
95 }
96
a2i_ASN1_ENUMERATED(BIO * bp,ASN1_ENUMERATED * bs,char * buf,int size)97 int a2i_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *bs, char *buf, int size)
98 {
99 int ret=0;
100 int i,j,k,m,n,again,bufsize;
101 unsigned char *s=NULL,*sp;
102 unsigned char *bufp;
103 int num=0,slen=0,first=1;
104
105 bs->type=V_ASN1_ENUMERATED;
106
107 bufsize=BIO_gets(bp,buf,size);
108 for (;;)
109 {
110 if (bufsize < 1) goto err_sl;
111 i=bufsize;
112 if (buf[i-1] == '\n') buf[--i]='\0';
113 if (i == 0) goto err_sl;
114 if (buf[i-1] == '\r') buf[--i]='\0';
115 if (i == 0) goto err_sl;
116 again=(buf[i-1] == '\\');
117
118 for (j=0; j<i; j++)
119 {
120 if (!( ((buf[j] >= '0') && (buf[j] <= '9')) ||
121 ((buf[j] >= 'a') && (buf[j] <= 'f')) ||
122 ((buf[j] >= 'A') && (buf[j] <= 'F'))))
123 {
124 i=j;
125 break;
126 }
127 }
128 buf[i]='\0';
129 /* We have now cleared all the crap off the end of the
130 * line */
131 if (i < 2) goto err_sl;
132
133 bufp=(unsigned char *)buf;
134 if (first)
135 {
136 first=0;
137 if ((bufp[0] == '0') && (buf[1] == '0'))
138 {
139 bufp+=2;
140 i-=2;
141 }
142 }
143 k=0;
144 i-=again;
145 if (i%2 != 0)
146 {
147 OPENSSL_PUT_ERROR(ASN1, ASN1_R_ODD_NUMBER_OF_CHARS);
148 goto err;
149 }
150 i/=2;
151 if (num+i > slen)
152 {
153 if (s == NULL)
154 sp=(unsigned char *)OPENSSL_malloc(
155 (unsigned int)num+i*2);
156 else
157 sp=(unsigned char *)OPENSSL_realloc(s,
158 (unsigned int)num+i*2);
159 if (sp == NULL)
160 {
161 OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
162 goto err;
163 }
164 s=sp;
165 slen=num+i*2;
166 }
167 for (j=0; j<i; j++,k+=2)
168 {
169 for (n=0; n<2; n++)
170 {
171 m=bufp[k+n];
172 if ((m >= '0') && (m <= '9'))
173 m-='0';
174 else if ((m >= 'a') && (m <= 'f'))
175 m=m-'a'+10;
176 else if ((m >= 'A') && (m <= 'F'))
177 m=m-'A'+10;
178 else
179 {
180 OPENSSL_PUT_ERROR(ASN1, ASN1_R_NON_HEX_CHARACTERS);
181 goto err;
182 }
183 s[num+j]<<=4;
184 s[num+j]|=m;
185 }
186 }
187 num+=i;
188 if (again)
189 bufsize=BIO_gets(bp,buf,size);
190 else
191 break;
192 }
193 bs->length=num;
194 bs->data=s;
195 ret=1;
196 err:
197 if (0)
198 {
199 err_sl:
200 OPENSSL_PUT_ERROR(ASN1, ASN1_R_SHORT_LINE);
201 }
202 if (s != NULL)
203 OPENSSL_free(s);
204 return(ret);
205 }
206
207