diff options
Diffstat (limited to 'openssl/crypto/asn1/f_int.c')
| -rw-r--r-- | openssl/crypto/asn1/f_int.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/f_int.c b/openssl/crypto/asn1/f_int.c new file mode 100644 index 000000000..9494e597a --- /dev/null +++ b/openssl/crypto/asn1/f_int.c @@ -0,0 +1,219 @@ +/* crypto/asn1/f_int.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/buffer.h> +#include <openssl/asn1.h> + +int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a) + { + int i,n=0; + static const char *h="0123456789ABCDEF"; + char buf[2]; + + if (a == NULL) return(0); + + if (a->type & V_ASN1_NEG) + { + if (BIO_write(bp, "-", 1) != 1) goto err; + n = 1; + } + + if (a->length == 0) + { + if (BIO_write(bp,"00",2) != 2) goto err; + n += 2; + } + else + { + for (i=0; i<a->length; i++) + { + if ((i != 0) && (i%35 == 0)) + { + if (BIO_write(bp,"\\\n",2) != 2) goto err; + n+=2; + } + buf[0]=h[((unsigned char)a->data[i]>>4)&0x0f]; + buf[1]=h[((unsigned char)a->data[i] )&0x0f]; + if (BIO_write(bp,buf,2) != 2) goto err; + n+=2; + } + } + return(n); +err: + return(-1); + } + +int a2i_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *bs, char *buf, int size) + { + int ret=0; + int i,j,k,m,n,again,bufsize; + unsigned char *s=NULL,*sp; + unsigned char *bufp; + int num=0,slen=0,first=1; + + bs->type=V_ASN1_INTEGER; + + bufsize=BIO_gets(bp,buf,size); + for (;;) + { + if (bufsize < 1) goto err_sl; + i=bufsize; + if (buf[i-1] == '\n') buf[--i]='\0'; + if (i == 0) goto err_sl; + if (buf[i-1] == '\r') buf[--i]='\0'; + if (i == 0) goto err_sl; + again=(buf[i-1] == '\\'); + + for (j=0; j<i; j++) + { +#ifndef CHARSET_EBCDIC + if (!( ((buf[j] >= '0') && (buf[j] <= '9')) || + ((buf[j] >= 'a') && (buf[j] <= 'f')) || + ((buf[j] >= 'A') && (buf[j] <= 'F')))) +#else + /* This #ifdef is not strictly necessary, since + * the characters A...F a...f 0...9 are contiguous + * (yes, even in EBCDIC - but not the whole alphabet). + * Nevertheless, isxdigit() is faster. + */ + if (!isxdigit(buf[j])) +#endif + { + i=j; + break; + } + } + buf[i]='\0'; + /* We have now cleared all the crap off the end of the + * line */ + if (i < 2) goto err_sl; + + bufp=(unsigned char *)buf; + if (first) + { + first=0; + if ((bufp[0] == '0') && (buf[1] == '0')) + { + bufp+=2; + i-=2; + } + } + k=0; + i-=again; + if (i%2 != 0) + { + ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_ODD_NUMBER_OF_CHARS); + goto err; + } + i/=2; + if (num+i > slen) + { + if (s == NULL) + sp=(unsigned char *)OPENSSL_malloc( + (unsigned int)num+i*2); + else + sp=OPENSSL_realloc_clean(s,slen,num+i*2); + if (sp == NULL) + { + ASN1err(ASN1_F_A2I_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); + if (s != NULL) OPENSSL_free(s); + goto err; + } + s=sp; + slen=num+i*2; + } + for (j=0; j<i; j++,k+=2) + { + for (n=0; n<2; n++) + { + m=bufp[k+n]; + if ((m >= '0') && (m <= '9')) + m-='0'; + else if ((m >= 'a') && (m <= 'f')) + m=m-'a'+10; + else if ((m >= 'A') && (m <= 'F')) + m=m-'A'+10; + else + { + ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_NON_HEX_CHARACTERS); + goto err; + } + s[num+j]<<=4; + s[num+j]|=m; + } + } + num+=i; + if (again) + bufsize=BIO_gets(bp,buf,size); + else + break; + } + bs->length=num; + bs->data=s; + ret=1; +err: + if (0) + { +err_sl: + ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_SHORT_LINE); + } + return(ret); + } + |