--- /dev/null
+/* crypto/asn1/asn1_lib.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 <limits.h>
+#include "cryptlib.h"
+#include <openssl/asn1.h>
+#include <openssl/asn1_mac.h>
+
+static int asn1_get_length(const unsigned char **pp,int *inf,long *rl,int max);
+static void asn1_put_length(unsigned char **pp, int length);
+const char ASN1_version[]="ASN.1" OPENSSL_VERSION_PTEXT;
+
+static int _asn1_check_infinite_end(const unsigned char **p, long len)
+ {
+ /* If there is 0 or 1 byte left, the length check should pick
+ * things up */
+ if (len <= 0)
+ return(1);
+ else if ((len >= 2) && ((*p)[0] == 0) && ((*p)[1] == 0))
+ {
+ (*p)+=2;
+ return(1);
+ }
+ return(0);
+ }
+
+int ASN1_check_infinite_end(unsigned char **p, long len)
+ {
+ return _asn1_check_infinite_end((const unsigned char **)p, len);
+ }
+
+int ASN1_const_check_infinite_end(const unsigned char **p, long len)
+ {
+ return _asn1_check_infinite_end(p, len);
+ }
+
+
+int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
+ int *pclass, long omax)
+ {
+ int i,ret;
+ long l;
+ const unsigned char *p= *pp;
+ int tag,xclass,inf;
+ long max=omax;
+
+ if (!max) goto err;
+ ret=(*p&V_ASN1_CONSTRUCTED);
+ xclass=(*p&V_ASN1_PRIVATE);
+ i= *p&V_ASN1_PRIMITIVE_TAG;
+ if (i == V_ASN1_PRIMITIVE_TAG)
+ { /* high-tag */
+ p++;
+ if (--max == 0) goto err;
+ l=0;
+ while (*p&0x80)
+ {
+ l<<=7L;
+ l|= *(p++)&0x7f;
+ if (--max == 0) goto err;
+ if (l > (INT_MAX >> 7L)) goto err;
+ }
+ l<<=7L;
+ l|= *(p++)&0x7f;
+ tag=(int)l;
+ if (--max == 0) goto err;
+ }
+ else
+ {
+ tag=i;
+ p++;
+ if (--max == 0) goto err;
+ }
+ *ptag=tag;
+ *pclass=xclass;
+ if (!asn1_get_length(&p,&inf,plength,(int)max)) goto err;
+
+ if (inf && !(ret & V_ASN1_CONSTRUCTED))
+ goto err;
+
+#if 0
+ fprintf(stderr,"p=%d + *plength=%ld > omax=%ld + *pp=%d (%d > %d)\n",
+ (int)p,*plength,omax,(int)*pp,(int)(p+ *plength),
+ (int)(omax+ *pp));
+
+#endif
+ if (*plength > (omax - (p - *pp)))
+ {
+ ASN1err(ASN1_F_ASN1_GET_OBJECT,ASN1_R_TOO_LONG);
+ /* Set this so that even if things are not long enough
+ * the values are set correctly */
+ ret|=0x80;
+ }
+ *pp=p;
+ return(ret|inf);
+err:
+ ASN1err(ASN1_F_ASN1_GET_OBJECT,ASN1_R_HEADER_TOO_LONG);
+ return(0x80);
+ }
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl, int max)
+ {
+ const unsigned char *p= *pp;
+ unsigned long ret=0;
+ unsigned int i;
+
+ if (max-- < 1) return(0);
+ if (*p == 0x80)
+ {
+ *inf=1;
+ ret=0;
+ p++;
+ }
+ else
+ {
+ *inf=0;
+ i= *p&0x7f;
+ if (*(p++) & 0x80)
+ {
+ if (i > sizeof(long))
+ return 0;
+ if (max-- == 0) return(0);
+ while (i-- > 0)
+ {
+ ret<<=8L;
+ ret|= *(p++);
+ if (max-- == 0) return(0);
+ }
+ }
+ else
+ ret=i;
+ }
+ if (ret > LONG_MAX)
+ return 0;
+ *pp=p;
+ *rl=(long)ret;
+ return(1);
+ }
+
+/* class 0 is constructed
+ * constructed == 2 for indefinite length constructed */
+void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
+ int xclass)
+ {
+ unsigned char *p= *pp;
+ int i, ttag;
+
+ i=(constructed)?V_ASN1_CONSTRUCTED:0;
+ i|=(xclass&V_ASN1_PRIVATE);
+ if (tag < 31)
+ *(p++)=i|(tag&V_ASN1_PRIMITIVE_TAG);
+ else
+ {
+ *(p++)=i|V_ASN1_PRIMITIVE_TAG;
+ for(i = 0, ttag = tag; ttag > 0; i++) ttag >>=7;
+ ttag = i;
+ while(i-- > 0)
+ {
+ p[i] = tag & 0x7f;
+ if(i != (ttag - 1)) p[i] |= 0x80;
+ tag >>= 7;
+ }
+ p += ttag;
+ }
+ if (constructed == 2)
+ *(p++)=0x80;
+ else
+ asn1_put_length(&p,length);
+ *pp=p;
+ }
+
+int ASN1_put_eoc(unsigned char **pp)
+ {
+ unsigned char *p = *pp;
+ *p++ = 0;
+ *p++ = 0;
+ *pp = p;
+ return 2;
+ }
+
+static void asn1_put_length(unsigned char **pp, int length)
+ {
+ unsigned char *p= *pp;
+ int i,l;
+ if (length <= 127)
+ *(p++)=(unsigned char)length;
+ else
+ {
+ l=length;
+ for (i=0; l > 0; i++)
+ l>>=8;
+ *(p++)=i|0x80;
+ l=i;
+ while (i-- > 0)
+ {
+ p[i]=length&0xff;
+ length>>=8;
+ }
+ p+=l;
+ }
+ *pp=p;
+ }
+
+int ASN1_object_size(int constructed, int length, int tag)
+ {
+ int ret;
+
+ ret=length;
+ ret++;
+ if (tag >= 31)
+ {
+ while (tag > 0)
+ {
+ tag>>=7;
+ ret++;
+ }
+ }
+ if (constructed == 2)
+ return ret + 3;
+ ret++;
+ if (length > 127)
+ {
+ while (length > 0)
+ {
+ length>>=8;
+ ret++;
+ }
+ }
+ return(ret);
+ }
+
+static int _asn1_Finish(ASN1_const_CTX *c)
+ {
+ if ((c->inf == (1|V_ASN1_CONSTRUCTED)) && (!c->eos))
+ {
+ if (!ASN1_const_check_infinite_end(&c->p,c->slen))
+ {
+ c->error=ERR_R_MISSING_ASN1_EOS;
+ return(0);
+ }
+ }
+ if ( ((c->slen != 0) && !(c->inf & 1)) ||
+ ((c->slen < 0) && (c->inf & 1)))
+ {
+ c->error=ERR_R_ASN1_LENGTH_MISMATCH;
+ return(0);
+ }
+ return(1);
+ }
+
+int asn1_Finish(ASN1_CTX *c)
+ {
+ return _asn1_Finish((ASN1_const_CTX *)c);
+ }
+
+int asn1_const_Finish(ASN1_const_CTX *c)
+ {
+ return _asn1_Finish(c);
+ }
+
+int asn1_GetSequence(ASN1_const_CTX *c, long *length)
+ {
+ const unsigned char *q;
+
+ q=c->p;
+ c->inf=ASN1_get_object(&(c->p),&(c->slen),&(c->tag),&(c->xclass),
+ *length);
+ if (c->inf & 0x80)
+ {
+ c->error=ERR_R_BAD_GET_ASN1_OBJECT_CALL;
+ return(0);
+ }
+ if (c->tag != V_ASN1_SEQUENCE)
+ {
+ c->error=ERR_R_EXPECTING_AN_ASN1_SEQUENCE;
+ return(0);
+ }
+ (*length)-=(c->p-q);
+ if (c->max && (*length < 0))
+ {
+ c->error=ERR_R_ASN1_LENGTH_MISMATCH;
+ return(0);
+ }
+ if (c->inf == (1|V_ASN1_CONSTRUCTED))
+ c->slen= *length+ *(c->pp)-c->p;
+ c->eos=0;
+ return(1);
+ }
+
+int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
+ {
+ if (str == NULL)
+ return 0;
+ dst->type = str->type;
+ if (!ASN1_STRING_set(dst,str->data,str->length))
+ return 0;
+ dst->flags = str->flags;
+ return 1;
+ }
+
+ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
+ {
+ ASN1_STRING *ret;
+ if (!str)
+ return NULL;
+ ret=ASN1_STRING_new();
+ if (!ret)
+ return NULL;
+ if (!ASN1_STRING_copy(ret,str))
+ {
+ ASN1_STRING_free(ret);
+ return NULL;
+ }
+ return ret;
+ }
+
+int ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len)
+ {
+ unsigned char *c;
+ const char *data=_data;
+
+ if (len < 0)
+ {
+ if (data == NULL)
+ return(0);
+ else
+ len=strlen(data);
+ }
+ if ((str->length < len) || (str->data == NULL))
+ {
+ c=str->data;
+ if (c == NULL)
+ str->data=OPENSSL_malloc(len+1);
+ else
+ str->data=OPENSSL_realloc(c,len+1);
+
+ if (str->data == NULL)
+ {
+ ASN1err(ASN1_F_ASN1_STRING_SET,ERR_R_MALLOC_FAILURE);
+ str->data=c;
+ return(0);
+ }
+ }
+ str->length=len;
+ if (data != NULL)
+ {
+ memcpy(str->data,data,len);
+ /* an allowance for strings :-) */
+ str->data[len]='\0';
+ }
+ return(1);
+ }
+
+void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
+ {
+ if (str->data)
+ OPENSSL_free(str->data);
+ str->data = data;
+ str->length = len;
+ }
+
+ASN1_STRING *ASN1_STRING_new(void)
+ {
+ return(ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
+ }
+
+
+ASN1_STRING *ASN1_STRING_type_new(int type)
+ {
+ ASN1_STRING *ret;
+
+ ret=(ASN1_STRING *)OPENSSL_malloc(sizeof(ASN1_STRING));
+ if (ret == NULL)
+ {
+ ASN1err(ASN1_F_ASN1_STRING_TYPE_NEW,ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+ ret->length=0;
+ ret->type=type;
+ ret->data=NULL;
+ ret->flags=0;
+ return(ret);
+ }
+
+void ASN1_STRING_free(ASN1_STRING *a)
+ {
+ if (a == NULL) return;
+ if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
+ OPENSSL_free(a->data);
+ OPENSSL_free(a);
+ }
+
+int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
+ {
+ int i;
+
+ i=(a->length-b->length);
+ if (i == 0)
+ {
+ i=memcmp(a->data,b->data,a->length);
+ if (i == 0)
+ return(a->type-b->type);
+ else
+ return(i);
+ }
+ else
+ return(i);
+ }
+
+void asn1_add_error(const unsigned char *address, int offset)
+ {
+ char buf1[DECIMAL_SIZE(address)+1],buf2[DECIMAL_SIZE(offset)+1];
+
+ BIO_snprintf(buf1,sizeof buf1,"%lu",(unsigned long)address);
+ BIO_snprintf(buf2,sizeof buf2,"%d",offset);
+ ERR_add_error_data(4,"address=",buf1," offset=",buf2);
+ }
+
+int ASN1_STRING_length(const ASN1_STRING *x)
+{ return M_ASN1_STRING_length(x); }
+
+void ASN1_STRING_length_set(ASN1_STRING *x, int len)
+{ M_ASN1_STRING_length_set(x, len); return; }
+
+int ASN1_STRING_type(ASN1_STRING *x)
+{ return M_ASN1_STRING_type(x); }
+
+unsigned char * ASN1_STRING_data(ASN1_STRING *x)
+{ return M_ASN1_STRING_data(x); }
projects / cassiopeia.git / blobdiff