#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1.h>
+#include <openssl/bn.h>
-/* Support for ASN1 ENUMERATED type: based on a_int.c */
-
-/* ASN1err(ASN1_F_D2I_ASN1_ENUMERATED,ASN1_R_EXPECTING_AN_ENUMERATED);
+/*
+ * Code for ENUMERATED type: identical to INTEGER apart from a different tag.
+ * for comments on encoding see a_int.c
*/
-int i2d_ASN1_ENUMERATED(ASN1_ENUMERATED *a, unsigned char **pp)
- {
- int pad=0,ret,r,i,t;
- unsigned char *p,*pt,*n,pb=0;
-
- if ((a == NULL) || (a->data == NULL)) return(0);
- t=a->type;
- if (a->length == 0)
- ret=1;
- else
- {
- ret=a->length;
- i=a->data[0];
- if ((t == V_ASN1_ENUMERATED) && (i > 127))
- {
- pad=1;
- pb=0;
- }
- else if ((t == V_ASN1_NEG_ENUMERATED) && (i>128))
- {
- pad=1;
- pb=0xFF;
- }
- ret+=pad;
- }
- r=ASN1_object_size(0,ret,V_ASN1_ENUMERATED);
- if (pp == NULL) return(r);
- p= *pp;
-
- ASN1_put_object(&p,0,ret,V_ASN1_ENUMERATED,V_ASN1_UNIVERSAL);
- if (pad) *(p++)=pb;
- if (a->length == 0)
- *(p++)=0;
- else if (t == V_ASN1_ENUMERATED)
- {
- memcpy(p,a->data,(unsigned int)a->length);
- p+=a->length;
- }
- else
- {
- n=a->data;
- pt=p;
- for (i=a->length; i>0; i--)
- *(p++)= (*(n++)^0xFF)+1;
- if (!pad) *pt|=0x80;
- }
-
- *pp=p;
- return(r);
- }
-
-ASN1_ENUMERATED *d2i_ASN1_ENUMERATED(ASN1_ENUMERATED **a, unsigned char **pp,
- long length)
- {
- ASN1_ENUMERATED *ret=NULL;
- unsigned char *p,*to,*s;
- long len;
- int inf,tag,xclass;
- int i;
-
- if ((a == NULL) || ((*a) == NULL))
- {
- if ((ret=ASN1_ENUMERATED_new()) == NULL) return(NULL);
- ret->type=V_ASN1_ENUMERATED;
- }
- else
- ret=(*a);
-
- p= *pp;
- inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
- if (inf & 0x80)
- {
- i=ASN1_R_BAD_OBJECT_HEADER;
- goto err;
- }
-
- if (tag != V_ASN1_ENUMERATED)
- {
- i=ASN1_R_EXPECTING_AN_ENUMERATED;
- goto err;
- }
-
- /* We must Malloc stuff, even for 0 bytes otherwise it
- * signifies a missing NULL parameter. */
- s=(unsigned char *)Malloc((int)len+1);
- if (s == NULL)
- {
- i=ERR_R_MALLOC_FAILURE;
- goto err;
- }
- to=s;
- if (*p & 0x80) /* a negative number */
- {
- ret->type=V_ASN1_NEG_ENUMERATED;
- if (*p == 0xff)
- {
- p++;
- len--;
- }
- for (i=(int)len; i>0; i--)
- *(to++)= (*(p++)^0xFF)+1;
- }
- else
- {
- ret->type=V_ASN1_ENUMERATED;
- if ((*p == 0) && (len != 1))
- {
- p++;
- len--;
- }
- memcpy(s,p,(int)len);
- p+=len;
- }
-
- if (ret->data != NULL) Free((char *)ret->data);
- ret->data=s;
- ret->length=(int)len;
- if (a != NULL) (*a)=ret;
- *pp=p;
- return(ret);
-err:
- ASN1err(ASN1_F_D2I_ASN1_ENUMERATED,i);
- if ((ret != NULL) && ((a == NULL) || (*a != ret)))
- ASN1_ENUMERATED_free(ret);
- return(NULL);
- }
-
int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v)
{
- int i,j,k;
+ int j,k;
+ unsigned int i;
unsigned char buf[sizeof(long)+1];
long d;
a->type=V_ASN1_ENUMERATED;
- if (a->length < (sizeof(long)+1))
+ if (a->length < (int)(sizeof(long)+1))
{
if (a->data != NULL)
- Free((char *)a->data);
- if ((a->data=(unsigned char *)Malloc(sizeof(long)+1)) != NULL)
+ OPENSSL_free(a->data);
+ if ((a->data=(unsigned char *)OPENSSL_malloc(sizeof(long)+1)) != NULL)
memset((char *)a->data,0,sizeof(long)+1);
}
if (a->data == NULL)
d>>=8;
}
j=0;
- if (v < 0) a->data[j++]=0;
for (k=i-1; k >=0; k--)
a->data[j++]=buf[k];
a->length=j;
if (i == V_ASN1_NEG_ENUMERATED)
neg=1;
else if (i != V_ASN1_ENUMERATED)
- return(0);
+ return -1;
- if (a->length > sizeof(long))
+ if (a->length > (int)sizeof(long))
{
/* hmm... a bit ugly */
return(0xffffffffL);
}
if (a->data == NULL)
- return(0);
+ return 0;
for (i=0; i<a->length; i++)
{
int len,j;
if (ai == NULL)
- ret=ASN1_ENUMERATED_new();
+ ret=M_ASN1_ENUMERATED_new();
else
ret=ai;
if (ret == NULL)
ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_NESTED_ASN1_ERROR);
goto err;
}
- ret->type=V_ASN1_ENUMERATED;
+ if(BN_is_negative(bn)) ret->type = V_ASN1_NEG_ENUMERATED;
+ else ret->type=V_ASN1_ENUMERATED;
j=BN_num_bits(bn);
len=((j == 0)?0:((j/8)+1));
- ret->data=(unsigned char *)Malloc(len+4);
+ if (ret->length < len+4)
+ {
+ unsigned char *new_data=OPENSSL_realloc(ret->data, len+4);
+ if (!new_data)
+ {
+ ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ ret->data=new_data;
+ }
+
ret->length=BN_bn2bin(bn,ret->data);
return(ret);
err:
- if (ret != ai) ASN1_ENUMERATED_free(ret);
+ if (ret != ai) M_ASN1_ENUMERATED_free(ret);
return(NULL);
}
if ((ret=BN_bin2bn(ai->data,ai->length,bn)) == NULL)
ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN,ASN1_R_BN_LIB);
+ else if(ai->type == V_ASN1_NEG_ENUMERATED) BN_set_negative(ret,1);
return(ret);
}
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