x509_vfy.c

openssl是ssl的开源项目

/*	ctx->error=0;  not needed */
	while (n >= 0)
		{
		ctx->error_depth=n;
		if (!xs->valid)
			{
			if ((pkey=X509_get_pubkey(xi)) == NULL)
				{
				ctx->error=X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY;
				ctx->current_cert=xi;
				ok=(*cb)(0,ctx);
				if (!ok) goto end;
				}
			if (X509_verify(xs,pkey) <= 0)
				{
				ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE;
				ctx->current_cert=xs;
				ok=(*cb)(0,ctx);
				if (!ok) goto end;
				}
			pkey=NULL;

			i=X509_cmp_current_time(X509_get_notBefore(xs));
			if (i == 0)
				{
				ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD;
				ctx->current_cert=xs;
				ok=(*cb)(0,ctx);
				if (!ok) goto end;
				}
			if (i > 0)
				{
				ctx->error=X509_V_ERR_CERT_NOT_YET_VALID;
				ctx->current_cert=xs;
				ok=(*cb)(0,ctx);
				if (!ok) goto end;
				}
			xs->valid=1;
			}

		i=X509_cmp_current_time(X509_get_notAfter(xs));
		if (i == 0)
			{
			ctx->error=X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD;
			ctx->current_cert=xs;
			ok=(*cb)(0,ctx);
			if (!ok) goto end;
			}

		if (i < 0)
			{
			ctx->error=X509_V_ERR_CERT_HAS_EXPIRED;
			ctx->current_cert=xs;
			ok=(*cb)(0,ctx);
			if (!ok) goto end;
			}

		/* CRL CHECK */

		/* The last error (if any) is still in the error value */
		ctx->current_cert=xs;
		ok=(*cb)(1,ctx);
		if (!ok) goto end;

		n--;
		if (n >= 0)
			{
			xi=xs;
			xs=(X509 *)sk_value(ctx->chain,n);
			}
		}
	ok=1;
end:
	return(ok);
	}

int X509_cmp_current_time(ctm)
ASN1_UTCTIME *ctm;
	{
	char *str;
	ASN1_UTCTIME atm;
	time_t offset;
	char buff1[24],buff2[24],*p;
	int i,j;

	p=buff1;
	i=ctm->length;
	str=(char *)ctm->data;
	if ((i < 11) || (i > 17)) return(0);
	memcpy(p,str,10);
	p+=10;
	str+=10;

	if ((*str == 'Z') || (*str == '-') || (*str == '+'))
		{ *(p++)='0'; *(p++)='0'; }
	else	{ *(p++)= *(str++); *(p++)= *(str++); }
	*(p++)='Z';
	*(p++)='\0';

	if (*str == 'Z')
		offset=0;
	else
		{
		if ((*str != '+') && (str[5] != '-'))
			return(0);
		offset=((str[1]-'0')*10+(str[2]-'0'))*60;
		offset+=(str[3]-'0')*10+(str[4]-'0');
		if (*str == '-')
			offset= -offset;
		}
	atm.type=V_ASN1_UTCTIME;
	atm.length=sizeof(buff2);
	atm.data=(unsigned char *)buff2;

	X509_gmtime_adj(&atm,-offset);

	i=(buff1[0]-'0')*10+(buff1[1]-'0');
	if (i < 70) i+=100;
	j=(buff2[0]-'0')*10+(buff2[1]-'0');
	if (j < 70) j+=100;

	if (i < j) return (-1);
	if (i > j) return (1);
	i=strcmp(buff1,buff2);
	if (i == 0) /* wait a second then return younger :-) */
		return(-1);
	else
		return(i);
	}

ASN1_UTCTIME *X509_gmtime_adj(s, adj)
ASN1_UTCTIME *s;
long adj;
	{
	time_t t;

	time(&t);
	t+=adj;
	return(ASN1_UTCTIME_set(s,t));
	}

int X509_get_pubkey_parameters(pkey,chain)
EVP_PKEY *pkey;
STACK *chain;
	{
	EVP_PKEY *ktmp=NULL,*ktmp2;
	int i,j;

	if ((pkey != NULL) && !EVP_PKEY_missing_parameters(pkey)) return(1);

	for (i=0; i<sk_num(chain); i++)
		{
		ktmp=X509_get_pubkey((X509 *)sk_value(chain,i));
		if (ktmp == NULL)
			{
			X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_GET_CERTS_PUBLIC_KEY);
			return(0);
			}
		if (!EVP_PKEY_missing_parameters(ktmp))
			break;
		else
			{
			ktmp=NULL;
			}
		}
	if (ktmp == NULL)
		{
		X509err(X509_F_X509_GET_PUBKEY_PARAMETERS,X509_R_UNABLE_TO_FIND_PARAMETERS_IN_CHAIN);
		return(0);
		}

	/* first, populate the other certs */
	for (j=i-1; j >= 0; j--)
		{
		ktmp2=X509_get_pubkey((X509 *)sk_value(chain,j));
		EVP_PKEY_copy_parameters(ktmp2,ktmp);
		}
	
	if (pkey != NULL)
		EVP_PKEY_copy_parameters(pkey,ktmp);
	return(1);
	}

int X509_STORE_add_cert(ctx,x)
X509_STORE *ctx;
X509 *x;
	{
	X509_OBJECT *obj,*r;
	int ret=1;

	if (x == NULL) return(0);
	obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
	if (obj == NULL)
		{
		X509err(X509_F_X509_STORE_ADD_CERT,ERR_R_MALLOC_FAILURE);
		return(0);
		}
	obj->type=X509_LU_X509;
	obj->data.x509=x;

	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);

	X509_OBJECT_up_ref_count(obj);

	r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
	if (r != NULL)
		{ /* oops, put it back */
		lh_delete(ctx->certs,(char *)obj);
		X509_OBJECT_free_contents(obj);
		Free(obj);
		lh_insert(ctx->certs,(char *)r);
		X509err(X509_F_X509_STORE_ADD_CERT,X509_R_CERT_ALREADY_IN_HASH_TABLE);
		ret=0;
		}

	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);

	return(ret);	
	}

int X509_STORE_add_crl(ctx,x)
X509_STORE *ctx;
X509_CRL *x;
	{
	X509_OBJECT *obj,*r;
	int ret=1;

	if (x == NULL) return(0);
	obj=(X509_OBJECT *)Malloc(sizeof(X509_OBJECT));
	if (obj == NULL)
		{
		X509err(X509_F_X509_STORE_ADD_CRL,ERR_R_MALLOC_FAILURE);
		return(0);
		}
	obj->type=X509_LU_CRL;
	obj->data.crl=x;

	CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);

	X509_OBJECT_up_ref_count(obj);

	r=(X509_OBJECT *)lh_insert(ctx->certs,(char *)obj);
	if (r != NULL)
		{ /* oops, put it back */
		lh_delete(ctx->certs,(char *)obj);
		X509_OBJECT_free_contents(obj);
		Free(obj);
		lh_insert(ctx->certs,(char *)r);
		X509err(X509_F_X509_STORE_ADD_CRL,X509_R_CERT_ALREADY_IN_HASH_TABLE);
		ret=0;
		}

	CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);

	return(ret);	
	}

int X509_STORE_CTX_get_ex_new_index(argl,argp,new_func,dup_func,free_func)
long argl;
char *argp;
int (*new_func)();
int (*dup_func)();
void (*free_func)();
        {
        x509_store_ctx_num++;
        return(CRYPTO_get_ex_new_index(x509_store_ctx_num-1,
		&x509_store_ctx_method,
                argl,argp,new_func,dup_func,free_func));
        }

int X509_STORE_CTX_set_ex_data(ctx,idx,data)
X509_STORE_CTX *ctx;
int idx;
char *data;
	{
	return(CRYPTO_set_ex_data(&ctx->ex_data,idx,data));
	}

char *X509_STORE_CTX_get_ex_data(ctx,idx)
X509_STORE_CTX *ctx;
int idx;
	{
	return(CRYPTO_get_ex_data(&ctx->ex_data,idx));
	}

int X509_STORE_CTX_get_error(ctx)
X509_STORE_CTX *ctx;
	{
	return(ctx->error);
	}

void X509_STORE_CTX_set_error(ctx,err)
X509_STORE_CTX *ctx;
int err;
	{
	ctx->error=err;
	}

int X509_STORE_CTX_get_error_depth(ctx)
X509_STORE_CTX *ctx;
	{
	return(ctx->error_depth);
	}

X509 *X509_STORE_CTX_get_current_cert(ctx)
X509_STORE_CTX *ctx;
	{
	return(ctx->current_cert);
	}

STACK *X509_STORE_CTX_get_chain(ctx)
X509_STORE_CTX *ctx;
	{
	return(ctx->chain);
	}

void X509_STORE_CTX_set_cert(ctx,x)
X509_STORE_CTX *ctx;
X509 *x;
	{
	ctx->cert=x;
	}

void X509_STORE_CTX_set_chain(ctx,sk)
X509_STORE_CTX *ctx;
STACK *sk;
	{
	ctx->untrusted=sk;
	}