+static int PKCS7_type_is_other(PKCS7* p7)
+ {
+ int isOther=1;
+
+ int nid=OBJ_obj2nid(p7->type);
+
+ switch( nid )
+ {
+ case NID_pkcs7_data:
+ case NID_pkcs7_signed:
+ case NID_pkcs7_enveloped:
+ case NID_pkcs7_signedAndEnveloped:
+ case NID_pkcs7_digest:
+ case NID_pkcs7_encrypted:
+ isOther=0;
+ break;
+ default:
+ isOther=1;
+ }
+
+ return isOther;
+
+ }
+
+static ASN1_OCTET_STRING *PKCS7_get_octet_string(PKCS7 *p7)
+ {
+ if ( PKCS7_type_is_data(p7))
+ return p7->d.data;
+ if ( PKCS7_type_is_other(p7) && p7->d.other
+ && (p7->d.other->type == V_ASN1_OCTET_STRING))
+ return p7->d.other->value.octet_string;
+ return NULL;
+ }
+
+static int PKCS7_bio_add_digest(BIO **pbio, X509_ALGOR *alg)
+ {
+ BIO *btmp;
+ const EVP_MD *md;
+ if ((btmp=BIO_new(BIO_f_md())) == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
+ goto err;
+ }
+
+ md=EVP_get_digestbyobj(alg->algorithm);
+ if (md == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,PKCS7_R_UNKNOWN_DIGEST_TYPE);
+ goto err;
+ }
+
+ BIO_set_md(btmp,md);
+ if (*pbio == NULL)
+ *pbio=btmp;
+ else if (!BIO_push(*pbio,btmp))
+ {
+ PKCS7err(PKCS7_F_PKCS7_BIO_ADD_DIGEST,ERR_R_BIO_LIB);
+ goto err;
+ }
+ btmp=NULL;
+
+ return 1;
+
+ err:
+ if (btmp)
+ BIO_free(btmp);
+ return 0;
+
+ }
+