Experimental streaming PKCS#7 support.

[openssl.git] / crypto / pkcs7 / pk7_lib.c

diff --git a/crypto/pkcs7/pk7_lib.c b/crypto/pkcs7/pk7_lib.c
index 21738eebe23065b2eb7dec8a4cc06243c16c1fc5..8942ae8a53b3e964e19468386f4b09f79a6a485d 100644 (file)
--- a/crypto/pkcs7/pk7_lib.c
+++ b/crypto/pkcs7/pk7_lib.c
@@ -594,3 +594,53 @@ int PKCS7_set_cipher(PKCS7 *p7, const EVP_CIPHER *cipher)
        return 1;
        }
 
        return 1;
        }
 

+int PKCS7_stream(unsigned char ***boundary, PKCS7 *p7)
+       {
+       ASN1_OCTET_STRING *os = NULL;
+
+       switch (OBJ_obj2nid(p7->type))
+               {
+               case NID_pkcs7_data:
+               os = p7->d.data;
+               break;
+
+               case NID_pkcs7_signedAndEnveloped:
+               os = p7->d.signed_and_enveloped->enc_data->enc_data;
+               if (os == NULL)
+                       {
+                       os=M_ASN1_OCTET_STRING_new();
+                       p7->d.signed_and_enveloped->enc_data->enc_data=os;
+                       }
+               break;
+
+               case NID_pkcs7_enveloped:
+               os = p7->d.enveloped->enc_data->enc_data;
+               if (os == NULL)
+                       {
+                       os=M_ASN1_OCTET_STRING_new();
+                       p7->d.enveloped->enc_data->enc_data=os;
+                       }
+               break;
+
+               case NID_pkcs7_signed:
+               os=p7->d.sign->contents->d.data;
+               break;
+
+               default:
+               os = NULL;
+               break;
+               }
+       
+       if (os == NULL)
+               return 0;
+
+       os->flags |= ASN1_STRING_FLAG_NDEF;
+       *boundary = &os->data;
+
+       return 1;
+       }
+
+
+
+
+