| /* 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 <openssl/asn1.h> |
| |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| |
| /* Based on a_int.c: equivalent ENUMERATED functions */ |
| |
| int i2a_ASN1_ENUMERATED(BIO *bp, ASN1_ENUMERATED *a) |
| { |
| int i,n=0; |
| static const char *h="0123456789ABCDEF"; |
| char buf[2]; |
| |
| if (a == NULL) return(0); |
| |
| 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_ENUMERATED(BIO *bp, ASN1_ENUMERATED *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_ENUMERATED; |
| |
| 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++) |
| { |
| if (!( ((buf[j] >= '0') && (buf[j] <= '9')) || |
| ((buf[j] >= 'a') && (buf[j] <= 'f')) || |
| ((buf[j] >= 'A') && (buf[j] <= 'F')))) |
| { |
| 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) |
| { |
| OPENSSL_PUT_ERROR(ASN1, a2i_ASN1_ENUMERATED, 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=(unsigned char *)OPENSSL_realloc(s, |
| (unsigned int)num+i*2); |
| if (sp == NULL) |
| { |
| OPENSSL_PUT_ERROR(ASN1, a2i_ASN1_ENUMERATED, 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 |
| { |
| OPENSSL_PUT_ERROR(ASN1, a2i_ASN1_ENUMERATED, 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: |
| OPENSSL_PUT_ERROR(ASN1, a2i_ASN1_ENUMERATED, ASN1_R_SHORT_LINE); |
| } |
| return(ret); |
| } |
| |