diff options
Diffstat (limited to 'src/lib/libcrypto/asn1/a_bitstr.c')
| -rw-r--r-- | src/lib/libcrypto/asn1/a_bitstr.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/src/lib/libcrypto/asn1/a_bitstr.c b/src/lib/libcrypto/asn1/a_bitstr.c new file mode 100644 index 0000000000..0fb9ce0c2a --- /dev/null +++ b/src/lib/libcrypto/asn1/a_bitstr.c | |||
| @@ -0,0 +1,225 @@ | |||
| 1 | /* crypto/asn1/a_bitstr.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 | |||
| 63 | int ASN1_BIT_STRING_set(ASN1_BIT_STRING *x, unsigned char *d, int len) | ||
| 64 | { return M_ASN1_BIT_STRING_set(x, d, len); } | ||
| 65 | |||
| 66 | int i2c_ASN1_BIT_STRING(ASN1_BIT_STRING *a, unsigned char **pp) | ||
| 67 | { | ||
| 68 | int ret,j,bits,len; | ||
| 69 | unsigned char *p,*d; | ||
| 70 | |||
| 71 | if (a == NULL) return(0); | ||
| 72 | |||
| 73 | len=a->length; | ||
| 74 | |||
| 75 | if (len > 0) | ||
| 76 | { | ||
| 77 | if (a->flags & ASN1_STRING_FLAG_BITS_LEFT) | ||
| 78 | { | ||
| 79 | bits=(int)a->flags&0x07; | ||
| 80 | } | ||
| 81 | else | ||
| 82 | { | ||
| 83 | for ( ; len > 0; len--) | ||
| 84 | { | ||
| 85 | if (a->data[len-1]) break; | ||
| 86 | } | ||
| 87 | j=a->data[len-1]; | ||
| 88 | if (j & 0x01) bits=0; | ||
| 89 | else if (j & 0x02) bits=1; | ||
| 90 | else if (j & 0x04) bits=2; | ||
| 91 | else if (j & 0x08) bits=3; | ||
| 92 | else if (j & 0x10) bits=4; | ||
| 93 | else if (j & 0x20) bits=5; | ||
| 94 | else if (j & 0x40) bits=6; | ||
| 95 | else if (j & 0x80) bits=7; | ||
| 96 | else bits=0; /* should not happen */ | ||
| 97 | } | ||
| 98 | } | ||
| 99 | else | ||
| 100 | bits=0; | ||
| 101 | |||
| 102 | ret=1+len; | ||
| 103 | if (pp == NULL) return(ret); | ||
| 104 | |||
| 105 | p= *pp; | ||
| 106 | |||
| 107 | *(p++)=(unsigned char)bits; | ||
| 108 | d=a->data; | ||
| 109 | memcpy(p,d,len); | ||
| 110 | p+=len; | ||
| 111 | if (len > 0) p[-1]&=(0xff<<bits); | ||
| 112 | *pp=p; | ||
| 113 | return(ret); | ||
| 114 | } | ||
| 115 | |||
| 116 | ASN1_BIT_STRING *c2i_ASN1_BIT_STRING(ASN1_BIT_STRING **a, | ||
| 117 | const unsigned char **pp, long len) | ||
| 118 | { | ||
| 119 | ASN1_BIT_STRING *ret=NULL; | ||
| 120 | const unsigned char *p; | ||
| 121 | unsigned char *s; | ||
| 122 | int i; | ||
| 123 | |||
| 124 | if (len < 1) | ||
| 125 | { | ||
| 126 | i=ASN1_R_STRING_TOO_SHORT; | ||
| 127 | goto err; | ||
| 128 | } | ||
| 129 | |||
| 130 | if ((a == NULL) || ((*a) == NULL)) | ||
| 131 | { | ||
| 132 | if ((ret=M_ASN1_BIT_STRING_new()) == NULL) return(NULL); | ||
| 133 | } | ||
| 134 | else | ||
| 135 | ret=(*a); | ||
| 136 | |||
| 137 | p= *pp; | ||
| 138 | i= *(p++); | ||
| 139 | /* We do this to preserve the settings. If we modify | ||
| 140 | * the settings, via the _set_bit function, we will recalculate | ||
| 141 | * on output */ | ||
| 142 | ret->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); /* clear */ | ||
| 143 | ret->flags|=(ASN1_STRING_FLAG_BITS_LEFT|(i&0x07)); /* set */ | ||
| 144 | |||
| 145 | if (len-- > 1) /* using one because of the bits left byte */ | ||
| 146 | { | ||
| 147 | s=(unsigned char *)OPENSSL_malloc((int)len); | ||
| 148 | if (s == NULL) | ||
| 149 | { | ||
| 150 | i=ERR_R_MALLOC_FAILURE; | ||
| 151 | goto err; | ||
| 152 | } | ||
| 153 | memcpy(s,p,(int)len); | ||
| 154 | s[len-1]&=(0xff<<i); | ||
| 155 | p+=len; | ||
| 156 | } | ||
| 157 | else | ||
| 158 | s=NULL; | ||
| 159 | |||
| 160 | ret->length=(int)len; | ||
| 161 | if (ret->data != NULL) OPENSSL_free(ret->data); | ||
| 162 | ret->data=s; | ||
| 163 | ret->type=V_ASN1_BIT_STRING; | ||
| 164 | if (a != NULL) (*a)=ret; | ||
| 165 | *pp=p; | ||
| 166 | return(ret); | ||
| 167 | err: | ||
| 168 | ASN1err(ASN1_F_C2I_ASN1_BIT_STRING,i); | ||
| 169 | if ((ret != NULL) && ((a == NULL) || (*a != ret))) | ||
| 170 | M_ASN1_BIT_STRING_free(ret); | ||
| 171 | return(NULL); | ||
| 172 | } | ||
| 173 | |||
| 174 | /* These next 2 functions from Goetz Babin-Ebell <babinebell@trustcenter.de> | ||
| 175 | */ | ||
| 176 | int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value) | ||
| 177 | { | ||
| 178 | int w,v,iv; | ||
| 179 | unsigned char *c; | ||
| 180 | |||
| 181 | w=n/8; | ||
| 182 | v=1<<(7-(n&0x07)); | ||
| 183 | iv= ~v; | ||
| 184 | if (!value) v=0; | ||
| 185 | |||
| 186 | if (a == NULL) | ||
| 187 | return 0; | ||
| 188 | |||
| 189 | a->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); /* clear, set on write */ | ||
| 190 | |||
| 191 | if ((a->length < (w+1)) || (a->data == NULL)) | ||
| 192 | { | ||
| 193 | if (!value) return(1); /* Don't need to set */ | ||
| 194 | if (a->data == NULL) | ||
| 195 | c=(unsigned char *)OPENSSL_malloc(w+1); | ||
| 196 | else | ||
| 197 | c=(unsigned char *)OPENSSL_realloc_clean(a->data, | ||
| 198 | a->length, | ||
| 199 | w+1); | ||
| 200 | if (c == NULL) | ||
| 201 | { | ||
| 202 | ASN1err(ASN1_F_ASN1_BIT_STRING_SET_BIT,ERR_R_MALLOC_FAILURE); | ||
| 203 | return 0; | ||
| 204 | } | ||
| 205 | if (w+1-a->length > 0) memset(c+a->length, 0, w+1-a->length); | ||
| 206 | a->data=c; | ||
| 207 | a->length=w+1; | ||
| 208 | } | ||
| 209 | a->data[w]=((a->data[w])&iv)|v; | ||
| 210 | while ((a->length > 0) && (a->data[a->length-1] == 0)) | ||
| 211 | a->length--; | ||
| 212 | return(1); | ||
| 213 | } | ||
| 214 | |||
| 215 | int ASN1_BIT_STRING_get_bit(ASN1_BIT_STRING *a, int n) | ||
| 216 | { | ||
| 217 | int w,v; | ||
| 218 | |||
| 219 | w=n/8; | ||
| 220 | v=1<<(7-(n&0x07)); | ||
| 221 | if ((a == NULL) || (a->length < (w+1)) || (a->data == NULL)) | ||
| 222 | return(0); | ||
| 223 | return((a->data[w]&v) != 0); | ||
| 224 | } | ||
| 225 | |||
