MDEV-33420: HASHICORP_KEY_MANAGEMENT fails on Windows with libcurl installed

- When `libcurl` is installed in path out of default path, like on
Windows, `include_directories` failed to find `curl/curl.h`.
- Fix `cmake` by using modern syntax with imported target and
`find_package`
- Fix warnings treated as the errors
  - Remove `HASHICORP_HAVE_EXCEPTIONS` macro and related code
- Add package to `Server` component in Windows
- Tested with `$ ./mysql-test/mtr --suite=vault`
- Closes PR #3068
- Reviewer: <wlad@mariadb.com>
            <julius.goryavsky@mariadb.com>

plugin/hashicorp_key_management/CMakeLists.txt

-INCLUDE(FindCURL)
+FIND_PACKAGE(CURL)
 IF(NOT CURL_FOUND)
   # Can't build plugin
   RETURN()
 ENDIF()
 
-INCLUDE_DIRECTORIES(${CURL_INCLUDE_DIR})
-
 set(CPACK_RPM_hashicorp-key-management_PACKAGE_SUMMARY "Hashicorp Key Management plugin for MariaDB" PARENT_SCOPE)
 set(CPACK_RPM_hashicorp-key-management_PACKAGE_DESCRIPTION "This encryption plugin uses Hashicorp Vault for storing encryption
  keys for MariaDB Data-at-Rest encryption." PARENT_SCOPE)
 
 MYSQL_ADD_PLUGIN(HASHICORP_KEY_MANAGEMENT
   hashicorp_key_management_plugin.cc
-  LINK_LIBRARIES ${CURL_LIBRARIES}
+  LINK_LIBRARIES CURL::libcurl
   CONFIG hashicorp_key_management.cnf
   COMPONENT hashicorp-key-management
   MODULE_ONLY)

plugin/hashicorp_key_management/hashicorp_key_management_plugin.cc

@@ -28,12 +28,6 @@
 #include <unordered_map>
 #include <mutex>
 
-#if defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND)
-#define HASHICORP_HAVE_EXCEPTIONS 1
-#else
-#define HASHICORP_HAVE_EXCEPTIONS 0
-#endif
-
 #define HASHICORP_DEBUG_LOGGING 0
 
 #define PLUGIN_ERROR_HEADER "hashicorp: "
@@ -208,15 +202,6 @@ unsigned int
   if (key_version == ENCRYPTION_KEY_VERSION_INVALID)
   {
     clock_t timestamp;
-#if HASHICORP_HAVE_EXCEPTIONS
-    try
-    {
-      VER_INFO &ver_info = latest_version_cache.at(key_id);
-      version = ver_info.key_version;
-      timestamp = ver_info.timestamp;
-    }
-    catch (const std::out_of_range &e)
-#else
     VER_MAP::const_iterator ver_iter = latest_version_cache.find(key_id);
     if (ver_iter != latest_version_cache.end())
     {
@@ -224,7 +209,6 @@ unsigned int
       timestamp = ver_iter->second.timestamp;
     }
     else
-#endif
     {
       mtx.unlock();
       return ENCRYPTION_KEY_VERSION_INVALID;
@@ -245,13 +229,6 @@ unsigned int
     }
   }
   KEY_INFO info;
-#if HASHICORP_HAVE_EXCEPTIONS
-  try
-  {
-    info = key_info_cache.at(KEY_ID_AND_VERSION(key_id, version));
-  }
-  catch (const std::out_of_range &e)
-#else
   KEY_MAP::const_iterator key_iter =
     key_info_cache.find(KEY_ID_AND_VERSION(key_id, version));
   if (key_iter != key_info_cache.end())
@@ -259,7 +236,6 @@ unsigned int
     info = key_iter->second;
   }
   else
-#endif
   {
     mtx.unlock();
     return ENCRYPTION_KEY_VERSION_INVALID;
@@ -304,20 +280,12 @@ unsigned int HCData::cache_get_version (unsigned int key_id)
 {
   unsigned int version;
   mtx.lock();
-#if HASHICORP_HAVE_EXCEPTIONS
-  try
-  {
-    version = latest_version_cache.at(key_id).key_version;
-  }
-  catch (const std::out_of_range &e)
-#else
   VER_MAP::const_iterator ver_iter = latest_version_cache.find(key_id);
   if (ver_iter != latest_version_cache.end())
   {
     version = ver_iter->second.key_version;
   }
   else
-#endif
   {
     version = ENCRYPTION_KEY_VERSION_INVALID;
   }
@@ -330,15 +298,6 @@ unsigned int HCData::cache_check_version (unsigned int key_id)
   unsigned int version;
   clock_t timestamp;
   mtx.lock();
-#if HASHICORP_HAVE_EXCEPTIONS
-  try
-  {
-    VER_INFO &ver_info = latest_version_cache.at(key_id);
-    version = ver_info.key_version;
-    timestamp = ver_info.timestamp;
-  }
-  catch (const std::out_of_range &e)
-#else
   VER_MAP::const_iterator ver_iter = latest_version_cache.find(key_id);
   if (ver_iter != latest_version_cache.end())
   {
@@ -346,7 +305,6 @@ unsigned int HCData::cache_check_version (unsigned int key_id)
     timestamp = ver_iter->second.timestamp;
   }
   else
-#endif
   {
     mtx.unlock();
 #if HASHICORP_DEBUG_LOGGING
@@ -977,29 +935,6 @@ struct st_mariadb_encryption hashicorp_key_management_plugin= {
   0, 0, 0, 0, 0
 };
 
-#ifdef _MSC_VER
-
-static int setenv (const char *name, const char *value, int overwrite)
-{
-  if (!overwrite)
-  {
-    size_t len= 0;
-    int rc= getenv_s(&len, NULL, 0, name);
-    if (rc)
-    {
-      return rc;
-    }
-    if (len)
-    {
-      errno = EINVAL;
-      return EINVAL;
-    }
-  }
-  return _putenv_s(name, value);
-}
-
-#endif
-
 #define MAX_URL_SIZE 32768
 
 int HCData::init ()

win/packaging/CPackWixConfig.cmake

@@ -63,7 +63,7 @@ SET(CPACK_COMPONENT_GROUP_MYSQLSERVER_DESCRIPTION "Install server")
 
  
  #Miscellaneous (hidden) components, part of server / or client programs
- FOREACH(comp connect-engine ClientPlugins gssapi-server gssapi-client aws-key-management rocksdb-engine)
+ FOREACH(comp connect-engine ClientPlugins gssapi-server gssapi-client aws-key-management rocksdb-engine plugin-hashicorp-key-management)
    STRING(TOUPPER "${comp}" comp)
    SET(CPACK_COMPONENT_${comp}_GROUP "MySQLServer")
    SET(CPACK_COMPONENT_${comp}_HIDDEN 1)