]>
Commit | Line | Data |
---|---|---|
119f6288 DSH |
1 | /* crypto/asn1/a_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" | |
ec577822 | 61 | #include <openssl/asn1.h> |
0f814687 | 62 | #include <openssl/bn.h> |
119f6288 | 63 | |
1ad2ecb6 DSH |
64 | /* |
65 | * Code for ENUMERATED type: identical to INTEGER apart from a different tag. | |
66 | * for comments on encoding see a_int.c | |
67 | */ | |
119f6288 | 68 | |
6b691a5c | 69 | int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v) |
119f6288 | 70 | { |
27545970 GT |
71 | int j,k; |
72 | unsigned int i; | |
119f6288 DSH |
73 | unsigned char buf[sizeof(long)+1]; |
74 | long d; | |
75 | ||
76 | a->type=V_ASN1_ENUMERATED; | |
27545970 | 77 | if (a->length < (int)(sizeof(long)+1)) |
119f6288 DSH |
78 | { |
79 | if (a->data != NULL) | |
26a3a48d RL |
80 | OPENSSL_free(a->data); |
81 | if ((a->data=(unsigned char *)OPENSSL_malloc(sizeof(long)+1)) != NULL) | |
119f6288 DSH |
82 | memset((char *)a->data,0,sizeof(long)+1); |
83 | } | |
84 | if (a->data == NULL) | |
85 | { | |
86 | ASN1err(ASN1_F_ASN1_ENUMERATED_SET,ERR_R_MALLOC_FAILURE); | |
87 | return(0); | |
88 | } | |
89 | d=v; | |
90 | if (d < 0) | |
91 | { | |
92 | d= -d; | |
93 | a->type=V_ASN1_NEG_ENUMERATED; | |
94 | } | |
95 | ||
96 | for (i=0; i<sizeof(long); i++) | |
97 | { | |
98 | if (d == 0) break; | |
99 | buf[i]=(int)d&0xff; | |
100 | d>>=8; | |
101 | } | |
102 | j=0; | |
119f6288 DSH |
103 | for (k=i-1; k >=0; k--) |
104 | a->data[j++]=buf[k]; | |
105 | a->length=j; | |
106 | return(1); | |
107 | } | |
108 | ||
6b691a5c | 109 | long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a) |
119f6288 DSH |
110 | { |
111 | int neg=0,i; | |
112 | long r=0; | |
113 | ||
114 | if (a == NULL) return(0L); | |
115 | i=a->type; | |
116 | if (i == V_ASN1_NEG_ENUMERATED) | |
117 | neg=1; | |
118 | else if (i != V_ASN1_ENUMERATED) | |
a8312c0e | 119 | return -1; |
119f6288 | 120 | |
27545970 | 121 | if (a->length > (int)sizeof(long)) |
119f6288 DSH |
122 | { |
123 | /* hmm... a bit ugly */ | |
124 | return(0xffffffffL); | |
125 | } | |
126 | if (a->data == NULL) | |
a8312c0e | 127 | return 0; |
119f6288 DSH |
128 | |
129 | for (i=0; i<a->length; i++) | |
130 | { | |
131 | r<<=8; | |
132 | r|=(unsigned char)a->data[i]; | |
133 | } | |
134 | if (neg) r= -r; | |
135 | return(r); | |
136 | } | |
137 | ||
6b691a5c | 138 | ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai) |
119f6288 DSH |
139 | { |
140 | ASN1_ENUMERATED *ret; | |
141 | int len,j; | |
142 | ||
143 | if (ai == NULL) | |
08e9c1af | 144 | ret=M_ASN1_ENUMERATED_new(); |
119f6288 DSH |
145 | else |
146 | ret=ai; | |
147 | if (ret == NULL) | |
148 | { | |
149 | ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_NESTED_ASN1_ERROR); | |
150 | goto err; | |
151 | } | |
ff22e913 | 152 | if(BN_is_negative(bn)) ret->type = V_ASN1_NEG_ENUMERATED; |
1ad2ecb6 | 153 | else ret->type=V_ASN1_ENUMERATED; |
119f6288 DSH |
154 | j=BN_num_bits(bn); |
155 | len=((j == 0)?0:((j/8)+1)); | |
9cdf87f1 RL |
156 | if (ret->length < len+4) |
157 | { | |
25ace3ed | 158 | unsigned char *new_data=OPENSSL_realloc(ret->data, len+4); |
9cdf87f1 RL |
159 | if (!new_data) |
160 | { | |
a0e7c8ee | 161 | ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE); |
9cdf87f1 RL |
162 | goto err; |
163 | } | |
164 | ret->data=new_data; | |
165 | } | |
166 | ||
119f6288 DSH |
167 | ret->length=BN_bn2bin(bn,ret->data); |
168 | return(ret); | |
169 | err: | |
08e9c1af | 170 | if (ret != ai) M_ASN1_ENUMERATED_free(ret); |
119f6288 DSH |
171 | return(NULL); |
172 | } | |
173 | ||
6b691a5c | 174 | BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn) |
119f6288 DSH |
175 | { |
176 | BIGNUM *ret; | |
177 | ||
178 | if ((ret=BN_bin2bn(ai->data,ai->length,bn)) == NULL) | |
179 | ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN,ASN1_R_BN_LIB); | |
ff22e913 | 180 | else if(ai->type == V_ASN1_NEG_ENUMERATED) BN_set_negative(ret,1); |
119f6288 DSH |
181 | return(ret); |
182 | } |