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1 /* crypto/asn1/f_enum.c */ | |
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 #include "cryptlib.h" | |
61 #include <openssl/buffer.h> | |
62 #include <openssl/asn1.h> | |
63 | |
64 /* Based on a_int.c: equivalent ENUMERATED functions */ | |
65 | |
66 int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a) | |
67 { | |
68 int i,n=0; | |
69 static const char *h="0123456789ABCDEF"; | |
70 char buf[2]; | |
71 | |
72 if (a == NULL) return(0); | |
73 | |
74 if (a->length == 0) | |
75 { | |
76 if (BIO_write(bp,"00",2) != 2) goto err; | |
77 n=2; | |
78 } | |
79 else | |
80 { | |
81 for (i=0; i<a->length; i++) | |
82 { | |
83 if ((i != 0) && (i%35 == 0)) | |
84 { | |
85 if (BIO_write(bp,"\\\n",2) != 2) goto err; | |
86 n+=2; | |
87 } | |
88 buf[0]=h[((unsigned char)a->data[i]>>4)&0x0f]; | |
89 buf[1]=h[((unsigned char)a->data[i] )&0x0f]; | |
90 if (BIO_write(bp,buf,2) != 2) goto err; | |
91 n+=2; | |
92 } | |
93 } | |
94 return(n); | |
95 err: | |
96 return(-1); | |
97 } | |
98 | |
99 int a2i_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *bs, char *buf, int size) | |
100 { | |
101 int ret=0; | |
102 int i,j,k,m,n,again,bufsize; | |
103 unsigned char *s=NULL,*sp; | |
104 unsigned char *bufp; | |
105 int num=0,slen=0,first=1; | |
106 | |
107 bs->type=V_ASN1_ENUMERATED; | |
108 | |
109 bufsize=BIO_gets(bp,buf,size); | |
110 for (;;) | |
111 { | |
112 if (bufsize < 1) goto err_sl; | |
113 i=bufsize; | |
114 if (buf[i-1] == '\n') buf[--i]='\0'; | |
115 if (i == 0) goto err_sl; | |
116 if (buf[i-1] == '\r') buf[--i]='\0'; | |
117 if (i == 0) goto err_sl; | |
118 again=(buf[i-1] == '\\'); | |
119 | |
120 for (j=0; j<i; j++) | |
121 { | |
122 if (!( ((buf[j] >= '0') && (buf[j] <= '9')) || | |
123 ((buf[j] >= 'a') && (buf[j] <= 'f')) || | |
124 ((buf[j] >= 'A') && (buf[j] <= 'F')))) | |
125 { | |
126 i=j; | |
127 break; | |
128 } | |
129 } | |
130 buf[i]='\0'; | |
131 /* We have now cleared all the crap off the end of the | |
132 * line */ | |
133 if (i < 2) goto err_sl; | |
134 | |
135 bufp=(unsigned char *)buf; | |
136 if (first) | |
137 { | |
138 first=0; | |
139 if ((bufp[0] == '0') && (buf[1] == '0')) | |
140 { | |
141 bufp+=2; | |
142 i-=2; | |
143 } | |
144 } | |
145 k=0; | |
146 i-=again; | |
147 if (i%2 != 0) | |
148 { | |
149 ASN1err(ASN1_F_A2I_ASN1_ENUMERATED,ASN1_R_ODD_NUMBER_OF_
CHARS); | |
150 goto err; | |
151 } | |
152 i/=2; | |
153 if (num+i > slen) | |
154 { | |
155 if (s == NULL) | |
156 sp=(unsigned char *)OPENSSL_malloc( | |
157 (unsigned int)num+i*2); | |
158 else | |
159 sp=(unsigned char *)OPENSSL_realloc(s, | |
160 (unsigned int)num+i*2); | |
161 if (sp == NULL) | |
162 { | |
163 ASN1err(ASN1_F_A2I_ASN1_ENUMERATED,ERR_R_MALLOC_
FAILURE); | |
164 if (s != NULL) OPENSSL_free(s); | |
165 goto err; | |
166 } | |
167 s=sp; | |
168 slen=num+i*2; | |
169 } | |
170 for (j=0; j<i; j++,k+=2) | |
171 { | |
172 for (n=0; n<2; n++) | |
173 { | |
174 m=bufp[k+n]; | |
175 if ((m >= '0') && (m <= '9')) | |
176 m-='0'; | |
177 else if ((m >= 'a') && (m <= 'f')) | |
178 m=m-'a'+10; | |
179 else if ((m >= 'A') && (m <= 'F')) | |
180 m=m-'A'+10; | |
181 else | |
182 { | |
183 ASN1err(ASN1_F_A2I_ASN1_ENUMERATED,ASN1_
R_NON_HEX_CHARACTERS); | |
184 goto err; | |
185 } | |
186 s[num+j]<<=4; | |
187 s[num+j]|=m; | |
188 } | |
189 } | |
190 num+=i; | |
191 if (again) | |
192 bufsize=BIO_gets(bp,buf,size); | |
193 else | |
194 break; | |
195 } | |
196 bs->length=num; | |
197 bs->data=s; | |
198 ret=1; | |
199 err: | |
200 if (0) | |
201 { | |
202 err_sl: | |
203 ASN1err(ASN1_F_A2I_ASN1_ENUMERATED,ASN1_R_SHORT_LINE); | |
204 } | |
205 return(ret); | |
206 } | |
207 | |
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