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| 1 /* crypto/asn1/f_int.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 int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *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->type & V_ASN1_NEG) | |
| 73 { | |
| 74 if (BIO_write(bp, "-", 1) != 1) goto err; | |
| 75 n = 1; | |
| 76 } | |
| 77 | |
| 78 if (a->length == 0) | |
| 79 { | |
| 80 if (BIO_write(bp,"00",2) != 2) goto err; | |
| 81 n += 2; | |
| 82 } | |
| 83 else | |
| 84 { | |
| 85 for (i=0; i<a->length; i++) | |
| 86 { | |
| 87 if ((i != 0) && (i%35 == 0)) | |
| 88 { | |
| 89 if (BIO_write(bp,"\\\n",2) != 2) goto err; | |
| 90 n+=2; | |
| 91 } | |
| 92 buf[0]=h[((unsigned char)a->data[i]>>4)&0x0f]; | |
| 93 buf[1]=h[((unsigned char)a->data[i] )&0x0f]; | |
| 94 if (BIO_write(bp,buf,2) != 2) goto err; | |
| 95 n+=2; | |
| 96 } | |
| 97 } | |
| 98 return(n); | |
| 99 err: | |
| 100 return(-1); | |
| 101 } | |
| 102 | |
| 103 int a2i_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *bs, char *buf, int size) | |
| 104 { | |
| 105 int ret=0; | |
| 106 int i,j,k,m,n,again,bufsize; | |
| 107 unsigned char *s=NULL,*sp; | |
| 108 unsigned char *bufp; | |
| 109 int num=0,slen=0,first=1; | |
| 110 | |
| 111 bs->type=V_ASN1_INTEGER; | |
| 112 | |
| 113 bufsize=BIO_gets(bp,buf,size); | |
| 114 for (;;) | |
| 115 { | |
| 116 if (bufsize < 1) goto err_sl; | |
| 117 i=bufsize; | |
| 118 if (buf[i-1] == '\n') buf[--i]='\0'; | |
| 119 if (i == 0) goto err_sl; | |
| 120 if (buf[i-1] == '\r') buf[--i]='\0'; | |
| 121 if (i == 0) goto err_sl; | |
| 122 again=(buf[i-1] == '\\'); | |
| 123 | |
| 124 for (j=0; j<i; j++) | |
| 125 { | |
| 126 #ifndef CHARSET_EBCDIC | |
| 127 if (!( ((buf[j] >= '0') && (buf[j] <= '9')) || | |
| 128 ((buf[j] >= 'a') && (buf[j] <= 'f')) || | |
| 129 ((buf[j] >= 'A') && (buf[j] <= 'F')))) | |
| 130 #else | |
| 131 /* This #ifdef is not strictly necessary, since | |
| 132 * the characters A...F a...f 0...9 are contiguous | |
| 133 * (yes, even in EBCDIC - but not the whole alphabet). | |
| 134 * Nevertheless, isxdigit() is faster. | |
| 135 */ | |
| 136 if (!isxdigit(buf[j])) | |
| 137 #endif | |
| 138 { | |
| 139 i=j; | |
| 140 break; | |
| 141 } | |
| 142 } | |
| 143 buf[i]='\0'; | |
| 144 /* We have now cleared all the crap off the end of the | |
| 145 * line */ | |
| 146 if (i < 2) goto err_sl; | |
| 147 | |
| 148 bufp=(unsigned char *)buf; | |
| 149 if (first) | |
| 150 { | |
| 151 first=0; | |
| 152 if ((bufp[0] == '0') && (buf[1] == '0')) | |
| 153 { | |
| 154 bufp+=2; | |
| 155 i-=2; | |
| 156 } | |
| 157 } | |
| 158 k=0; | |
| 159 i-=again; | |
| 160 if (i%2 != 0) | |
| 161 { | |
| 162 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_ODD_NUMBER_OF_CHA
RS); | |
| 163 goto err; | |
| 164 } | |
| 165 i/=2; | |
| 166 if (num+i > slen) | |
| 167 { | |
| 168 if (s == NULL) | |
| 169 sp=(unsigned char *)OPENSSL_malloc( | |
| 170 (unsigned int)num+i*2); | |
| 171 else | |
| 172 sp=OPENSSL_realloc_clean(s,slen,num+i*2); | |
| 173 if (sp == NULL) | |
| 174 { | |
| 175 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ERR_R_MALLOC_FAI
LURE); | |
| 176 if (s != NULL) OPENSSL_free(s); | |
| 177 goto err; | |
| 178 } | |
| 179 s=sp; | |
| 180 slen=num+i*2; | |
| 181 } | |
| 182 for (j=0; j<i; j++,k+=2) | |
| 183 { | |
| 184 for (n=0; n<2; n++) | |
| 185 { | |
| 186 m=bufp[k+n]; | |
| 187 if ((m >= '0') && (m <= '9')) | |
| 188 m-='0'; | |
| 189 else if ((m >= 'a') && (m <= 'f')) | |
| 190 m=m-'a'+10; | |
| 191 else if ((m >= 'A') && (m <= 'F')) | |
| 192 m=m-'A'+10; | |
| 193 else | |
| 194 { | |
| 195 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_N
ON_HEX_CHARACTERS); | |
| 196 goto err; | |
| 197 } | |
| 198 s[num+j]<<=4; | |
| 199 s[num+j]|=m; | |
| 200 } | |
| 201 } | |
| 202 num+=i; | |
| 203 if (again) | |
| 204 bufsize=BIO_gets(bp,buf,size); | |
| 205 else | |
| 206 break; | |
| 207 } | |
| 208 bs->length=num; | |
| 209 bs->data=s; | |
| 210 ret=1; | |
| 211 err: | |
| 212 if (0) | |
| 213 { | |
| 214 err_sl: | |
| 215 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_SHORT_LINE); | |
| 216 } | |
| 217 return(ret); | |
| 218 } | |
| 219 | |
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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