Refactoring the core security code.

As opposed to a flat directory, we now have the following structure:

- security
  -context
  - credentials
    - composite
    - fake
    - google_default
    - iam
    - jwt
    - oauth2
    - plugin
    - ssl
  - transport
  - util

We have not refactored the test code yet but this PR is already large
enough...

1 files changed, 44 insertions, 28 deletions

diff --git a/Makefile b/Makefile
index 922e0b0568..64ecf38f49 100644
--- a/Makefile
+++ b/Makefile
@@ -2583,20 +2583,28 @@ LIBGRPC_SRC = \
     src/core/ext/transport/chttp2/transport/writing.c \
     src/core/ext/transport/chttp2/alpn/alpn.c \
     src/core/lib/http/httpcli_security_connector.c \
-    src/core/lib/security/b64.c \
-    src/core/lib/security/client_auth_filter.c \
-    src/core/lib/security/credentials.c \
-    src/core/lib/security/credentials_metadata.c \
-    src/core/lib/security/credentials_posix.c \
-    src/core/lib/security/credentials_win32.c \
-    src/core/lib/security/google_default_credentials.c \
-    src/core/lib/security/handshake.c \
-    src/core/lib/security/json_token.c \
-    src/core/lib/security/jwt_verifier.c \
-    src/core/lib/security/secure_endpoint.c \
-    src/core/lib/security/security_connector.c \
-    src/core/lib/security/security_context.c \
-    src/core/lib/security/server_auth_filter.c \
+    src/core/lib/security/context/security_context.c \
+    src/core/lib/security/credentials/composite/composite_credentials.c \
+    src/core/lib/security/credentials/credentials.c \
+    src/core/lib/security/credentials/credentials_metadata.c \
+    src/core/lib/security/credentials/fake/fake_credentials.c \
+    src/core/lib/security/credentials/google_default/credentials_posix.c \
+    src/core/lib/security/credentials/google_default/credentials_win32.c \
+    src/core/lib/security/credentials/google_default/google_default_credentials.c \
+    src/core/lib/security/credentials/iam/iam_credentials.c \
+    src/core/lib/security/credentials/jwt/json_token.c \
+    src/core/lib/security/credentials/jwt/jwt_credentials.c \
+    src/core/lib/security/credentials/jwt/jwt_verifier.c \
+    src/core/lib/security/credentials/oauth2/oauth2_credentials.c \
+    src/core/lib/security/credentials/plugin/plugin_credentials.c \
+    src/core/lib/security/credentials/ssl/ssl_credentials.c \
+    src/core/lib/security/transport/client_auth_filter.c \
+    src/core/lib/security/transport/handshake.c \
+    src/core/lib/security/transport/secure_endpoint.c \
+    src/core/lib/security/transport/security_connector.c \
+    src/core/lib/security/transport/server_auth_filter.c \
+    src/core/lib/security/util/b64.c \
+    src/core/lib/security/util/json_util.c \
     src/core/lib/surface/init_secure.c \
     src/core/lib/tsi/fake_transport_security.c \
     src/core/lib/tsi/ssl_transport_security.c \
@@ -14314,20 +14322,28 @@ ifneq ($(OPENSSL_DEP),)
 src/core/ext/transport/chttp2/client/secure/secure_channel_create.c: $(OPENSSL_DEP)
 src/core/ext/transport/chttp2/server/secure/server_secure_chttp2.c: $(OPENSSL_DEP)
 src/core/lib/http/httpcli_security_connector.c: $(OPENSSL_DEP)
-src/core/lib/security/b64.c: $(OPENSSL_DEP)
-src/core/lib/security/client_auth_filter.c: $(OPENSSL_DEP)
-src/core/lib/security/credentials.c: $(OPENSSL_DEP)
-src/core/lib/security/credentials_metadata.c: $(OPENSSL_DEP)
-src/core/lib/security/credentials_posix.c: $(OPENSSL_DEP)
-src/core/lib/security/credentials_win32.c: $(OPENSSL_DEP)
-src/core/lib/security/google_default_credentials.c: $(OPENSSL_DEP)
-src/core/lib/security/handshake.c: $(OPENSSL_DEP)
-src/core/lib/security/json_token.c: $(OPENSSL_DEP)
-src/core/lib/security/jwt_verifier.c: $(OPENSSL_DEP)
-src/core/lib/security/secure_endpoint.c: $(OPENSSL_DEP)
-src/core/lib/security/security_connector.c: $(OPENSSL_DEP)
-src/core/lib/security/security_context.c: $(OPENSSL_DEP)
-src/core/lib/security/server_auth_filter.c: $(OPENSSL_DEP)
+src/core/lib/security/context/security_context.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/composite/composite_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/credentials_metadata.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/fake/fake_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/google_default/credentials_posix.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/google_default/credentials_win32.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/google_default/google_default_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/iam/iam_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/jwt/json_token.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/jwt/jwt_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/jwt/jwt_verifier.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/oauth2/oauth2_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/plugin/plugin_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/credentials/ssl/ssl_credentials.c: $(OPENSSL_DEP)
+src/core/lib/security/transport/client_auth_filter.c: $(OPENSSL_DEP)
+src/core/lib/security/transport/handshake.c: $(OPENSSL_DEP)
+src/core/lib/security/transport/secure_endpoint.c: $(OPENSSL_DEP)
+src/core/lib/security/transport/security_connector.c: $(OPENSSL_DEP)
+src/core/lib/security/transport/server_auth_filter.c: $(OPENSSL_DEP)
+src/core/lib/security/util/b64.c: $(OPENSSL_DEP)
+src/core/lib/security/util/json_util.c: $(OPENSSL_DEP)
 src/core/lib/surface/init_secure.c: $(OPENSSL_DEP)
 src/core/lib/tsi/fake_transport_security.c: $(OPENSSL_DEP)
 src/core/lib/tsi/ssl_transport_security.c: $(OPENSSL_DEP)