Move hardware module methods to libsoftkeymanager

This allows keystore to create a keystore_device for the softkeymanager
and use that instead of calling the openssl_* methods directly.

Change-Id: I232e4ff9ff2b498465d7d3e566e3c4a883ced0c0
diff --git a/softkeymaster/module.cpp b/softkeymaster/module.cpp
index bfb1dd5..efc18a7 100644
--- a/softkeymaster/module.cpp
+++ b/softkeymaster/module.cpp
@@ -13,10 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#include <errno.h>
-#include <string.h>
-#include <stdint.h>
-
 #include <keymaster/softkeymaster.h>
 
 #include <keystore/keystore.h>
@@ -24,72 +20,5 @@
 #include <hardware/hardware.h>
 #include <hardware/keymaster.h>
 
-#include <openssl/err.h>
-
-#include <UniquePtr.h>
-
-// For debugging
-// #define LOG_NDEBUG 0
-
-#define LOG_TAG "OpenSSLKeyMaster"
-#include <cutils/log.h>
-
-typedef UniquePtr<keymaster_device_t> Unique_keymaster_device_t;
-
-/* Close an opened OpenSSL instance */
-static int openssl_close(hw_device_t* dev) {
-    delete dev;
-    return 0;
-}
-
-/*
- * Generic device handling
- */
-static int openssl_open(const hw_module_t* module, const char* name, hw_device_t** device) {
-    if (strcmp(name, KEYSTORE_KEYMASTER) != 0)
-        return -EINVAL;
-
-    Unique_keymaster_device_t dev(new keymaster_device_t);
-    if (dev.get() == NULL)
-        return -ENOMEM;
-
-    dev->common.tag = HARDWARE_DEVICE_TAG;
-    dev->common.version = 1;
-    dev->common.module = (struct hw_module_t*)module;
-    dev->common.close = openssl_close;
-
-    dev->flags = KEYMASTER_SOFTWARE_ONLY;
-
-    dev->generate_keypair = openssl_generate_keypair;
-    dev->import_keypair = openssl_import_keypair;
-    dev->get_keypair_public = openssl_get_keypair_public;
-    dev->delete_keypair = NULL;
-    dev->delete_all = NULL;
-    dev->sign_data = openssl_sign_data;
-    dev->verify_data = openssl_verify_data;
-
-    ERR_load_crypto_strings();
-    ERR_load_BIO_strings();
-
-    *device = reinterpret_cast<hw_device_t*>(dev.release());
-
-    return 0;
-}
-
-static struct hw_module_methods_t keystore_module_methods = {
-    .open = openssl_open,
-};
-
-struct keystore_module HAL_MODULE_INFO_SYM __attribute__((visibility("default"))) = {
-    .common = {
-        .tag = HARDWARE_MODULE_TAG,
-        .module_api_version = KEYMASTER_MODULE_API_VERSION_0_2,
-        .hal_api_version = HARDWARE_HAL_API_VERSION,
-        .id = KEYSTORE_HARDWARE_MODULE_ID,
-        .name = "Keymaster OpenSSL HAL",
-        .author = "The Android Open Source Project",
-        .methods = &keystore_module_methods,
-        .dso = 0,
-        .reserved = {},
-    },
-};
+struct keystore_module HAL_MODULE_INFO_SYM __attribute__((visibility("default")))
+    = softkeymaster_module;