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+/* crypto/asn1/asn1_par.c */
+/* Copyright (C) 1995-1997 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 "buffer.h"
+#include "objects.h"
+#include "x509.h"
+
+#ifndef NOPROTO
+static int asn1_print_info(BIO *bp, int tag, int xclass,int constructed,
+ int indent);
+static int asn1_parse2(BIO *bp, unsigned char **pp, long length,
+ int offset, int depth, int indent);
+#else
+static int asn1_print_info();
+static int asn1_parse2();
+#endif
+
+static int asn1_print_info(bp, tag, xclass, constructed,indent)
+BIO *bp;
+int tag;
+int xclass;
+int constructed;
+int indent;
+ {
+ static char *fmt="%-18s";
+ static char *fmt2="%2d %-15s";
+ char *p,str[128],*p2=NULL;
+
+ if (constructed & V_ASN1_CONSTRUCTED)
+ p="cons: ";
+ else
+ p="prim: ";
+ if (BIO_write(bp,p,6) < 6) goto err;
+ if (indent)
+ {
+ if (indent > 128) indent=128;
+ memset(str,' ',indent);
+ if (BIO_write(bp,str,indent) < indent) goto err;
+ }
+
+ p=str;
+ if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
+ sprintf(str,"priv [ %d ] ",tag);
+ else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
+ sprintf(str,"cont [ %d ]",tag);
+ else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
+ sprintf(str,"appl [ %d ]",tag);
+ else if ((tag == V_ASN1_EOC) /* && (xclass == V_ASN1_UNIVERSAL) */)
+ p="EOC";
+ else if (tag == V_ASN1_BOOLEAN)
+ p="BOOLEAN";
+ else if (tag == V_ASN1_INTEGER)
+ p="INTEGER";
+ else if (tag == V_ASN1_BIT_STRING)
+ p="BIT STRING";
+ else if (tag == V_ASN1_OCTET_STRING)
+ p="OCTET STRING";
+ else if (tag == V_ASN1_NULL)
+ p="NULL";
+ else if (tag == V_ASN1_OBJECT)
+ p="OBJECT";
+ else if (tag == V_ASN1_SEQUENCE)
+ p="SEQUENCE";
+ else if (tag == V_ASN1_SET)
+ p="SET";
+ else if (tag == V_ASN1_PRINTABLESTRING)
+ p="PRINTABLESTRING";
+ else if (tag == V_ASN1_T61STRING)
+ p="T61STRING";
+ else if (tag == V_ASN1_IA5STRING)
+ p="IA5STRING";
+ else if (tag == V_ASN1_UTCTIME)
+ p="UTCTIME";
+
+ /* extras */
+ else if (tag == V_ASN1_NUMERICSTRING)
+ p="NUMERICSTRING";
+ else if (tag == V_ASN1_VIDEOTEXSTRING)
+ p="VIDEOTEXSTRING";
+ else if (tag == V_ASN1_GENERALIZEDTIME)
+ p="GENERALIZEDTIME";
+ else if (tag == V_ASN1_GRAPHICSTRING)
+ p="GRAPHICSTRING";
+ else if (tag == V_ASN1_ISO64STRING)
+ p="ISO64STRING";
+ else if (tag == V_ASN1_GENERALSTRING)
+ p="GENERALSTRING";
+ else if (tag == V_ASN1_UNIVERSALSTRING)
+ p="UNIVERSALSTRING";
+
+ else
+ p2="(unknown)";
+
+ if (p2 != NULL)
+ {
+ if (BIO_printf(bp,fmt2,tag,p2) <= 0) goto err;
+ }
+ else
+ {
+ if (BIO_printf(bp,fmt,p) <= 0) goto err;
+ }
+ return(1);
+err:
+ return(0);
+ }
+
+int ASN1_parse(bp, pp, len, indent)
+BIO *bp;
+unsigned char *pp;
+long len;
+int indent;
+ {
+ return(asn1_parse2(bp,&pp,len,0,0,indent));
+ }
+
+static int asn1_parse2(bp, pp, length, offset, depth, indent)
+BIO *bp;
+unsigned char **pp;
+long length;
+int offset;
+int depth;
+int indent;
+ {
+ unsigned char *p,*ep,*tot,*op,*opp;
+ long len;
+ int tag,xclass,ret=0;
+ int nl,hl,j,r;
+ ASN1_OBJECT *o=NULL;
+ ASN1_OCTET_STRING *os=NULL;
+
+ p= *pp;
+ tot=p+length;
+ op=p-1;
+ while ((p < tot) && (op < p))
+ {
+ op=p;
+ j=ASN1_get_object(&p,&len,&tag,&xclass,length);
+#ifdef LINT
+ j=j;
+#endif
+ if (j & 0x80)
+ {
+ if (BIO_write(bp,"Error in encoding\n",18) <= 0)
+ goto end;
+ ret=0;
+ goto end;
+ }
+ hl=(p-op);
+ length-=hl;
+ /* if j == 0x21 it is a constructed indefinite length object */
+ if (BIO_printf(bp,"%5ld:",(long)offset+(long)(op- *pp))
+ <= 0) goto end;
+
+ if (j != (V_ASN1_CONSTRUCTED | 1))
+ {
+ if (BIO_printf(bp,"d=%-2d hl=%ld l=%4ld ",
+ depth,(long)hl,len) <= 0)
+ goto end;
+ }
+ else
+ {
+ if (BIO_printf(bp,"d=%-2d hl=%ld l=inf ",
+ depth,(long)hl) <= 0)
+ goto end;
+ }
+ if (!asn1_print_info(bp,tag,xclass,j,(indent)?depth:0))
+ goto end;
+ if (j & V_ASN1_CONSTRUCTED)
+ {
+ ep=p+len;
+ if (BIO_write(bp,"\n",1) <= 0) goto end;
+ if (len > length)
+ {
+ BIO_printf(bp,
+ "length is greater than %ld\n",length);
+ ret=0;
+ goto end;
+ }
+ if ((j == 0x21) && (len == 0))
+ {
+ for (;;)
+ {
+ r=asn1_parse2(bp,&p,(long)(tot-p),
+ offset+(p - *pp),depth+1,
+ indent);
+ if (r == 0) { ret=0; goto end; }
+ if ((r == 2) || (p >= tot)) break;
+ }
+ }
+ else
+ while (p < ep)
+ {
+ r=asn1_parse2(bp,&p,(long)len,
+ offset+(p - *pp),depth+1,
+ indent);
+ if (r == 0) { ret=0; goto end; }
+ }
+ }
+ else if (xclass != 0)
+ {
+ p+=len;
+ if (BIO_write(bp,"\n",1) <= 0) goto end;
+ }
+ else
+ {
+ nl=0;
+ if ( (tag == V_ASN1_PRINTABLESTRING) ||
+ (tag == V_ASN1_T61STRING) ||
+ (tag == V_ASN1_IA5STRING) ||
+ (tag == V_ASN1_UTCTIME))
+ {
+ if (BIO_write(bp,":",1) <= 0) goto end;
+ if ((len > 0) &&
+ BIO_write(bp,(char *)p,(int)len)
+ != (int)len)
+ goto end;
+ }
+ else if (tag == V_ASN1_OBJECT)
+ {
+ opp=op;
+ if (d2i_ASN1_OBJECT(&o,&opp,len+hl) != NULL)
+ {
+ if (BIO_write(bp,":",1) <= 0) goto end;
+ i2a_ASN1_OBJECT(bp,o);
+ }
+ else
+ {
+ if (BIO_write(bp,":BAD OBJECT",11) <= 0)
+ goto end;
+ }
+ }
+ else if (tag == V_ASN1_BOOLEAN)
+ {
+ int ii;
+
+ opp=op;
+ ii=d2i_ASN1_BOOLEAN(NULL,&opp,len+hl);
+ if (ii < 0)
+ {
+ if (BIO_write(bp,"Bad boolean\n",12))
+ goto end;
+ }
+ BIO_printf(bp,":%d",ii);
+ }
+ else if (tag == V_ASN1_OCTET_STRING)
+ {
+ int i,printable=1;
+
+ opp=op;
+ os=d2i_ASN1_OCTET_STRING(NULL,&opp,len+hl);
+ if (os != NULL)
+ {
+ opp=os->data;
+ for (i=0; i<os->length; i++)
+ {
+ if (( (opp[i] < ' ') &&
+ (opp[i] != '\n') &&
+ (opp[i] != '\r') &&
+ (opp[i] != '\t')) ||
+ (opp[i] > '~'))
+ {
+ printable=0;
+ break;
+ }
+ }
+ if (printable && (os->length > 0))
+ {
+ if (BIO_write(bp,":",1) <= 0)
+ goto end;
+ if (BIO_write(bp,(char *)opp,
+ os->length) <= 0)
+ goto end;
+ }
+ ASN1_OCTET_STRING_free(os);
+ os=NULL;
+ }
+ }
+ else if (tag == V_ASN1_INTEGER)
+ {
+ ASN1_INTEGER *bs;
+ int i;
+
+ opp=op;
+ bs=d2i_ASN1_INTEGER(NULL,&opp,len+hl);
+ if (bs != NULL)
+ {
+ if (BIO_write(bp,":",1) <= 0) goto end;
+ if (bs->type == V_ASN1_NEG_INTEGER)
+ if (BIO_write(bp,"-",1) <= 0)
+ goto end;
+ for (i=0; i<bs->length; i++)
+ {
+ if (BIO_printf(bp,"%02X",
+ bs->data[i]) <= 0)
+ goto end;
+ }
+ if (bs->length == 0)
+ {
+ if (BIO_write(bp,"00",2) <= 0)
+ goto end;
+ }
+ }
+ else
+ {
+ if (BIO_write(bp,"BAD INTEGER",11) <= 0)
+ goto end;
+ }
+ ASN1_INTEGER_free(bs);
+ }
+
+ if (!nl)
+ {
+ if (BIO_write(bp,"\n",1) <= 0) goto end;
+ }
+ p+=len;
+ if ((tag == V_ASN1_EOC) && (xclass == 0))
+ {
+ ret=2; /* End of sequence */
+ goto end;
+ }
+ }
+ length-=len;
+ }
+ ret=1;
+end:
+ if (o != NULL) ASN1_OBJECT_free(o);
+ if (os != NULL) ASN1_OCTET_STRING_free(os);
+ *pp=p;
+ return(ret);
+ }
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