Remove OpenSSL 1.0.2 and 1.1.0 support

This removes all logic from our native shim required to support less than OpenSSL 1.1.1. This makes our OpenSSL floor 1.1.1.

The general changes are:

1. `apibridge.c` is about creating OpenSSL 1.1.x-like functions from the
non-opaque structs. We don't need to shim those anymore, so the file is
gone.
3. `LEGACY_FUNCTION`s went away.
4. `FALLBACK_FUNCTION` and `REQUIRED_FUNCTION_110` are now
`REQUIRED_FUNCTION`s.
5. Any code paths were for older OpenSSLs have been removed.
6. OpenSSL 1.0 initialization has been removed. The portable build will
no longer look for 1.0 versions.

Author: vcsjones

src/libraries/Common/src/Interop/Unix/System.Security.Cryptography.Native/Interop.X509.cs

@@ -343,14 +343,6 @@ internal enum X509VerifyStatusCodeUniversal
             X509_V_ERR_EMAIL_MISMATCH = 63,
             X509_V_ERR_IP_ADDRESS_MISMATCH = 64,
         }
-        internal enum X509VerifyStatusCode102
-        {
-            X509_V_ERR_INVALID_CA = 24,
-
-            X509_V_ERR_INVALID_CALL = 65,
-            X509_V_ERR_STORE_LOOKUP = 66,
-            X509_V_ERR_PROXY_SUBJECT_NAME_VIOLATION = 67,
-        }
 
         internal enum X509VerifyStatusCode111
         {
@@ -421,7 +413,6 @@ internal X509VerifyStatusCode(int code)
             }
 
             public X509VerifyStatusCodeUniversal UniversalCode => (X509VerifyStatusCodeUniversal)Code;
-            public X509VerifyStatusCode102 Code102 => (X509VerifyStatusCode102)Code;
             public X509VerifyStatusCode111 Code111 => (X509VerifyStatusCode111)Code;
             public X509VerifyStatusCode30 Code30 => (X509VerifyStatusCode30)Code;
 

src/libraries/System.Security.Cryptography/src/System/Security/Cryptography/X509Certificates/OpenSslX509ChainProcessor.cs

@@ -1172,18 +1172,6 @@ private static X509ChainStatusFlags MapOpenSsl30Code(Interop.Crypto.X509VerifySt
             }
         }
 
-        private static X509ChainStatusFlags MapOpenSsl102Code(Interop.Crypto.X509VerifyStatusCode code)
-        {
-            switch (code.Code102)
-            {
-                case Interop.Crypto.X509VerifyStatusCode102.X509_V_ERR_INVALID_CA:
-                    return X509ChainStatusFlags.InvalidBasicConstraints;
-                default:
-                    Debug.Fail("Unrecognized X509VerifyStatusCode:" + code.Code102);
-                    throw GetUnmappedCodeException(nameof(MapOpenSsl102Code), (int)code.Code102);
-            }
-        }
-
         private static X509ChainStatusFlags MapOpenSsl111Code(Interop.Crypto.X509VerifyStatusCode code)
         {
             switch (code.Code111)
@@ -1417,7 +1405,7 @@ private static MapVersionSpecificCode GetVersionLookup()
                 return MapOpenSsl111Code;
             }
 
-            return MapOpenSsl102Code;
+            throw new CryptographicException();
         }
 
         private static CryptographicException GetUnmappedCodeException(string functionName, int code)

src/native/libs/System.Security.Cryptography.Native/CMakeLists.txt

@@ -23,7 +23,6 @@ append_extra_cryptography_libs(NATIVE_LIBS_EXTRA)
 include_directories(${OPENSSL_INCLUDE_DIR})
 
 set(NATIVECRYPTO_SOURCES
-    apibridge.c
     apibridge_30.c
     memory_debug.c
     openssl.c