X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fasn1%2Fa_object.c;h=570aac71a742d254a6a4731bfe652b02674a9318;hp=9eff09509caa9789bb4886f799df10b530cd884e;hb=4d6e1e4f29de455b5e644ea9cae5d5f5a2dbef33;hpb=e778802f53c8d47e96a6e4cbc776eb6e1d4c461a

diff --git a/crypto/asn1/a_object.c b/crypto/asn1/a_object.c
index 9eff09509c..570aac71a7 100644
--- a/crypto/asn1/a_object.c
+++ b/crypto/asn1/a_object.c
@@ -57,26 +57,22 @@
  */
 
 #include <stdio.h>
+#include <limits.h>
 #include "cryptlib.h"
-#include "buffer.h"
-#include "asn1.h"
-#include "objects.h"
+#include <openssl/buffer.h>
+#include <openssl/asn1.h>
+#include <openssl/objects.h>
+#include <openssl/bn.h>
 
-/* ASN1err(ASN1_F_ASN1_OBJECT_NEW,ASN1_R_EXPECTING_AN_OBJECT); 
- * ASN1err(ASN1_F_D2I_ASN1_OBJECT,ASN1_R_BAD_OBJECT_HEADER); 
- * ASN1err(ASN1_F_I2T_ASN1_OBJECT,ASN1_R_BAD_OBJECT_HEADER);
- */
-
-int i2d_ASN1_OBJECT(a, pp)
-ASN1_OBJECT *a;
-unsigned char **pp;
+int i2d_ASN1_OBJECT(ASN1_OBJECT *a, unsigned char **pp)
 	{
 	unsigned char *p;
+	int objsize;
 
 	if ((a == NULL) || (a->data == NULL)) return(0);
 
-	if (pp == NULL)
-		return(ASN1_object_size(0,a->length,V_ASN1_OBJECT));
+	objsize = ASN1_object_size(0,a->length,V_ASN1_OBJECT);
+	if (pp == NULL) return objsize;
 
 	p= *pp;
 	ASN1_put_object(&p,0,a->length,V_ASN1_OBJECT,V_ASN1_UNIVERSAL);
@@ -84,19 +80,19 @@ unsigned char **pp;
 	p+=a->length;
 
 	*pp=p;
-	return(a->length);
+	return(objsize);
 	}
 
-int a2d_ASN1_OBJECT(out,olen,buf,num)
-unsigned char *out;
-int olen;
-const char *buf;
-int num;
+size_t a2d_ASN1_OBJECT(unsigned char *out, size_t olen, const char *buf,
+		       int num)
 	{
-	int i,first,len=0,c;
-	char tmp[24];
+	int i,len=0,c, use_bn;
+	unsigned first;
+	char ftmp[24], *tmp = ftmp;
+	size_t tmpsize = sizeof ftmp;
 	const char *p;
 	unsigned long l;
+	BIGNUM *bl = NULL;
 
 	if (num == 0)
 		return(0);
@@ -108,7 +104,7 @@ int num;
 	num--;
 	if ((c >= '0') && (c <= '2'))
 		{
-		first=(c-'0')*40;
+		first= c-'0';
 		}
 	else
 		{
@@ -132,6 +128,7 @@ int num;
 			goto err;
 			}
 		l=0;
+		use_bn = 0;
 		for (;;)
 			{
 			if (num <= 0) break;
@@ -144,7 +141,22 @@ int num;
 				ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_INVALID_DIGIT);
 				goto err;
 				}
-			l=l*10L+(long)(c-'0');
+			if (!use_bn && l > (ULONG_MAX / 10L))
+				{
+				use_bn = 1;
+				if (!bl)
+					bl = BN_new();
+				if (!bl || !BN_set_word(bl, l))
+					goto err;
+				}
+			if (use_bn)
+				{
+				if (!BN_mul_word(bl, 10L)
+				    || !BN_add_signed_word(bl, c-'0'))
+					goto err;
+				}
+			else
+				l=l*10L+(c-'0');
 			}
 		if (len == 0)
 			{
@@ -153,14 +165,42 @@ int num;
 				ASN1err(ASN1_F_A2D_ASN1_OBJECT,ASN1_R_SECOND_NUMBER_TOO_LARGE);
 				goto err;
 				}
-			l+=(long)first;
+			if (use_bn)
+				{
+				if (!BN_add_word(bl, first * 40))
+					goto err;
+				}
+			else
+				l+=(long)first*40;
 			}
 		i=0;
-		for (;;)
+		if (use_bn)
+			{
+			int blsize;
+			blsize = BN_num_bits(bl);
+			blsize = (blsize + 6)/7;
+			if (blsize > tmpsize)
+				{
+				if (tmp != ftmp)
+					OPENSSL_free(tmp);
+				tmpsize = blsize + 32;
+				tmp = OPENSSL_malloc(tmpsize);
+				if (!tmp)
+					goto err;
+				}
+			while(blsize--)
+				tmp[i++] = (unsigned char)BN_div_word(bl, 0x80L);
+			}
+		else
 			{
-			tmp[i++]=(unsigned char)l&0x7f;
-			l>>=7L;
-			if (l == 0L) break;
+					
+			for (;;)
+				{
+				tmp[i++]=(unsigned char)l&0x7f;
+				l>>=7L;
+				if (l == 0L) break;
+				}
+
 			}
 		if (out != NULL)
 			{
@@ -176,124 +216,57 @@ int num;
 		else
 			len+=i;
 		}
+	if (tmp != ftmp)
+		OPENSSL_free(tmp);
+	if (bl)
+		BN_free(bl);
 	return(len);
 err:
+	if (tmp != ftmp)
+		OPENSSL_free(tmp);
+	if (bl)
+		BN_free(bl);
 	return(0);
 	}
 
-int i2t_ASN1_OBJECT(buf,buf_len,a)
-char *buf;
-int buf_len;
-ASN1_OBJECT *a;
-	{
-	int i,idx=0,n=0,len,nid;
-	unsigned long l;
-	unsigned char *p;
-	const char *s;
-	char tbuf[32];
-
-	if (buf_len <= 0) return(0);
-
-	if ((a == NULL) || (a->data == NULL))
-		{
-		buf[0]='\0';
-		return(0);
-		}
-
-	nid=OBJ_obj2nid(a);
-	if (nid == NID_undef)
-		{
-		len=a->length;
-		p=a->data;
-
-		idx=0;
-		l=0;
-		while (idx < a->length)
-			{
-			l|=(p[idx]&0x7f);
-			if (!(p[idx] & 0x80)) break;
-			l<<=7L;
-			idx++;
-			}
-		idx++;
-		i=(int)(l/40);
-		if (i > 2) i=2;
-		l-=(long)(i*40);
-
-		sprintf(tbuf,"%d.%ld",i,l);
-		i=strlen(tbuf);
-		strncpy(buf,tbuf,buf_len);
-		buf_len-=i;
-		buf+=i;
-		n+=i;
-
-		l=0;
-		for (; idx<len; idx++)
-			{
-			l|=p[idx]&0x7f;
-			if (!(p[idx] & 0x80))
-				{
-				sprintf(tbuf,".%ld",l);
-				i=strlen(tbuf);
-				if (buf_len > 0)
-					strncpy(buf,tbuf,buf_len);
-				buf_len-=i;
-				buf+=i;
-				n+=i;
-				l=0;
-				}
-			l<<=7L;
-			}
-		}
-	else
-		{
-		s=OBJ_nid2ln(nid);
-		if (s == NULL)
-			s=OBJ_nid2sn(nid);
-		strncpy(buf,s,buf_len);
-		n=strlen(s);
-		}
-	buf[buf_len-1]='\0';
-	return(n);
-	}
+int i2t_ASN1_OBJECT(char *buf, size_t buf_len, ASN1_OBJECT *a)
+{
+	return OBJ_obj2txt(buf, buf_len, a, 0);
+}
 
-int i2a_ASN1_OBJECT(bp,a)
-BIO *bp;
-ASN1_OBJECT *a;
+int i2a_ASN1_OBJECT(BIO *bp, ASN1_OBJECT *a)
 	{
-	char buf[80];
-	int i;
+	char buf[80], *p = buf;
+	size_t i;
 
 	if ((a == NULL) || (a->data == NULL))
 		return(BIO_write(bp,"NULL",4));
-	i=i2t_ASN1_OBJECT(buf,80,a);
-	if (i > 80) i=80;
-	BIO_write(bp,buf,i);
+	i=i2t_ASN1_OBJECT(buf,sizeof buf,a);
+	if (i > (int)(sizeof(buf) - 1))
+		{
+		p = OPENSSL_malloc(i + 1);
+		if (!p)
+			return -1;
+		i2t_ASN1_OBJECT(p,i + 1,a);
+		}
+	if (i <= 0)
+		return BIO_write(bp, "<INVALID>", 9);
+	BIO_write(bp,p,i);
+	if (p != buf)
+		OPENSSL_free(p);
 	return(i);
 	}
 
-ASN1_OBJECT *d2i_ASN1_OBJECT(a, pp, length)
-ASN1_OBJECT **a;
-unsigned char **pp;
-long length; 
-	{
-	ASN1_OBJECT *ret=NULL;
-	unsigned char *p;
-	long len;
+ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
+			     size_t length)
+{
+	const unsigned char *p;
+	size_t len;
 	int tag,xclass;
 	int inf,i;
-
-	/* only the ASN1_OBJECTs from the 'table' will have values
-	 * for ->sn or ->ln */
-	if ((a == NULL) || ((*a) == NULL) ||
-		!((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC))
-		{
-		if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL);
-		}
-	else	ret=(*a);
+	ASN1_OBJECT *ret = NULL;
 
 	p= *pp;
-
 	inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
 	if (inf & 0x80)
 		{
@@ -306,16 +279,48 @@ long length;
 		i=ASN1_R_EXPECTING_AN_OBJECT;
 		goto err;
 		}
-	if ((ret->data == NULL) || (ret->length < len))
+	ret = c2i_ASN1_OBJECT(a, &p, len);
+	if(ret) *pp = p;
+	return ret;
+err:
+	ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
+	return(NULL);
+}
+ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
+			     size_t len)
+	{
+	ASN1_OBJECT *ret=NULL;
+	const unsigned char *p;
+	unsigned char *data;
+	int i;
+
+	/* only the ASN1_OBJECTs from the 'table' will have values
+	 * for ->sn or ->ln */
+	if ((a == NULL) || ((*a) == NULL) ||
+		!((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC))
 		{
-		if (ret->data != NULL) Free((char *)ret->data);
-		ret->data=(unsigned char *)Malloc((int)len);
-		ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;
-		if (ret->data == NULL)
+		if ((ret=ASN1_OBJECT_new()) == NULL) return(NULL);
+		}
+	else	ret=(*a);
+
+	p= *pp;
+	/* detach data from object */
+	data = (unsigned char *)ret->data;
+	ret->data = NULL;
+	/* once detached we can change it */
+	if ((data == NULL) || (ret->length < len))
+		{
+		ret->length=0;
+		if (data != NULL) OPENSSL_free(data);
+		data=OPENSSL_malloc(len ? len : 1);
+		if (data == NULL)
 			{ i=ERR_R_MALLOC_FAILURE; goto err; }
+		ret->flags|=ASN1_OBJECT_FLAG_DYNAMIC_DATA;
 		}
-	memcpy(ret->data,p,(int)len);
-	ret->length=(int)len;
+	memcpy(data,p,len);
+	/* reattach data to object, after which it remains const */
+	ret->data=data;
+	ret->length=len;
 	ret->sn=NULL;
 	ret->ln=NULL;
 	/* ret->flags=ASN1_OBJECT_FLAG_DYNAMIC; we know it is dynamic */
@@ -325,17 +330,17 @@ long length;
 	*pp=p;
 	return(ret);
 err:
-	ASN1err(ASN1_F_D2I_ASN1_OBJECT,i);
+	ASN1err(ASN1_F_C2I_ASN1_OBJECT,i);
 	if ((ret != NULL) && ((a == NULL) || (*a != ret)))
 		ASN1_OBJECT_free(ret);
 	return(NULL);
 	}
 
-ASN1_OBJECT *ASN1_OBJECT_new()
+ASN1_OBJECT *ASN1_OBJECT_new(void)
 	{
 	ASN1_OBJECT *ret;
 
-	ret=(ASN1_OBJECT *)Malloc(sizeof(ASN1_OBJECT));
+	ret=(ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT));
 	if (ret == NULL)
 		{
 		ASN1err(ASN1_F_ASN1_OBJECT_NEW,ERR_R_MALLOC_FAILURE);
@@ -350,33 +355,29 @@ ASN1_OBJECT *ASN1_OBJECT_new()
 	return(ret);
 	}
 
-void ASN1_OBJECT_free(a)
-ASN1_OBJECT *a;
+void ASN1_OBJECT_free(ASN1_OBJECT *a)
 	{
 	if (a == NULL) return;
 	if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS)
 		{
-#ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause mempory leaks */
-		if (a->sn != NULL) Free((void *)a->sn);
-		if (a->ln != NULL) Free((void *)a->ln);
+#ifndef CONST_STRICT /* disable purely for compile-time strict const checking. Doing this on a "real" compile will cause memory leaks */
+		if (a->sn != NULL) OPENSSL_free((void *)a->sn);
+		if (a->ln != NULL) OPENSSL_free((void *)a->ln);
 #endif
 		a->sn=a->ln=NULL;
 		}
 	if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA)
 		{
-		if (a->data != NULL) Free(a->data);
+		if (a->data != NULL) OPENSSL_free((void *)a->data);
 		a->data=NULL;
 		a->length=0;
 		}
 	if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC)
-		Free(a);
+		OPENSSL_free(a);
 	}
 
-ASN1_OBJECT *ASN1_OBJECT_create(nid,data,len,sn,ln)
-int nid;
-unsigned char *data;
-int len;
-char *sn,*ln;
+ASN1_OBJECT *ASN1_OBJECT_create(int nid, unsigned char *data, size_t len,
+	     const char *sn, const char *ln)
 	{
 	ASN1_OBJECT o;
 
@@ -390,3 +391,5 @@ char *sn,*ln;
 	return(OBJ_dup(&o));
 	}
 
+IMPLEMENT_STACK_OF(ASN1_OBJECT)
+IMPLEMENT_ASN1_SET_OF(ASN1_OBJECT)