Add support for 'other' PKCS#7 content types.

CHANGES

@@ -4,6 +4,12 @@
 
  Changes between 0.9.5a and 0.9.6  [xx XXX 2000]
 
+  *) Unrecognized PKCS#7 content types are now handled via a
+     catch all ASN1_TYPE structure. This allows unsupported
+     types to be stored as a "blob" and an application can
+     encode and decode it manually.
+     [Steve Henson]
+
   *) Fix various signed/unsigned issues to make a_strex,c
      compile under VC++.
      [Oscar Jacobsson <oscar.jacobsson@celocom.com>]

crypto/asn1/p7_lib.c

@@ -104,6 +104,7 @@ int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
 			M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
 			break;
 		default:
+			M_ASN1_I2D_len(a->d.other,i2d_ASN1_TYPE);
 			break;
 			}
 		}
@@ -138,6 +139,7 @@ int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
 			M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
 			break;
 		default:
+			M_ASN1_I2D_put(a->d.other,i2d_ASN1_TYPE);
 			break;
 			}
 		M_ASN1_I2D_INF_seq_end();
@@ -189,6 +191,7 @@ int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
 			M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
 			break;
 		default:
+			M_ASN1_I2D_len(a->d.other,i2d_ASN1_TYPE);
 			break;
 			}
 		/* Work out explicit tag content size */
@@ -228,6 +231,7 @@ int i2d_PKCS7(PKCS7 *a, unsigned char **pp)
 			M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
 			break;
 		default:
+			M_ASN1_I2D_put(a->d.other,i2d_ASN1_TYPE);
 			break;
 			}
 		}
@@ -298,10 +302,8 @@ PKCS7 *d2i_PKCS7(PKCS7 **a, unsigned char **pp, long length)
 			M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
 			break;
 		default:
-			c.error=ASN1_R_BAD_PKCS7_TYPE;
-			c.line=__LINE__;
-			goto err;
-			/* break; */
+			M_ASN1_D2I_get(ret->d.other,d2i_ASN1_TYPE);
+			break;
 			}
 		if (Tinf == (1|V_ASN1_CONSTRUCTED))
 			{
@@ -378,7 +380,7 @@ void PKCS7_content_free(PKCS7 *a)
 			PKCS7_ENCRYPT_free(a->d.encrypted);
 			break;
 		default:
-			/* MEMORY LEAK */
+			ASN1_TYPE_free(a->d.other);
 			break;
 			}
 		}

crypto/pkcs7/pkcs7.h

@@ -210,6 +210,9 @@ typedef struct pkcs7_st
 
 		/* NID_pkcs7_encrypted */
 		PKCS7_ENCRYPT *encrypted;
+
+		/* Anything else */
+		ASN1_TYPE *other;
 		} d;
 	} PKCS7;