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| 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" | |
| 61 #include <openssl/asn1.h> | |
| 62 #include <openssl/bn.h> | |
| 63 | |
| 64 /* | |
| 65 * Code for ENUMERATED type: identical to INTEGER apart from a different tag. | |
| 66 * for comments on encoding see a_int.c | |
| 67 */ | |
| 68 | |
| 69 int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v) | |
| 70 { | |
| 71 int j,k; | |
| 72 unsigned int i; | |
| 73 unsigned char buf[sizeof(long)+1]; | |
| 74 long d; | |
| 75 | |
| 76 a->type=V_ASN1_ENUMERATED; | |
| 77 if (a->length < (int)(sizeof(long)+1)) | |
| 78 { | |
| 79 if (a->data != NULL) | |
| 80 OPENSSL_free(a->data); | |
| 81 if ((a->data=(unsigned char *)OPENSSL_malloc(sizeof(long)+1)) !=
NULL) | |
| 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; | |
| 103 for (k=i-1; k >=0; k--) | |
| 104 a->data[j++]=buf[k]; | |
| 105 a->length=j; | |
| 106 return(1); | |
| 107 } | |
| 108 | |
| 109 long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a) | |
| 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) | |
| 119 return -1; | |
| 120 | |
| 121 if (a->length > (int)sizeof(long)) | |
| 122 { | |
| 123 /* hmm... a bit ugly */ | |
| 124 return(0xffffffffL); | |
| 125 } | |
| 126 if (a->data == NULL) | |
| 127 return 0; | |
| 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 | |
| 138 ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai) | |
| 139 { | |
| 140 ASN1_ENUMERATED *ret; | |
| 141 int len,j; | |
| 142 | |
| 143 if (ai == NULL) | |
| 144 ret=M_ASN1_ENUMERATED_new(); | |
| 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 } | |
| 152 if(BN_is_negative(bn)) ret->type = V_ASN1_NEG_ENUMERATED; | |
| 153 else ret->type=V_ASN1_ENUMERATED; | |
| 154 j=BN_num_bits(bn); | |
| 155 len=((j == 0)?0:((j/8)+1)); | |
| 156 if (ret->length < len+4) | |
| 157 { | |
| 158 unsigned char *new_data=OPENSSL_realloc(ret->data, len+4); | |
| 159 if (!new_data) | |
| 160 { | |
| 161 ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_MALLOC_FAILUR
E); | |
| 162 goto err; | |
| 163 } | |
| 164 ret->data=new_data; | |
| 165 } | |
| 166 | |
| 167 ret->length=BN_bn2bin(bn,ret->data); | |
| 168 return(ret); | |
| 169 err: | |
| 170 if (ret != ai) M_ASN1_ENUMERATED_free(ret); | |
| 171 return(NULL); | |
| 172 } | |
| 173 | |
| 174 BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn) | |
| 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); | |
| 180 else if(ai->type == V_ASN1_NEG_ENUMERATED) BN_set_negative(ret,1); | |
| 181 return(ret); | |
| 182 } | |
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Chromium Code Reviews
Issue 2072073002:
Delete bundled copy of OpenSSL and replace with README. (Closed)
Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master