WL#15336: Support MIT Kerberos library with authentication_kerberos_client on Windows

Description:
- Added GSSAPI support for authentication_kerberos_client on Windows
- Added new plugin option:
plugin_authentication_kerberos_client_use_gssapi
in authentication_kerberos_client plugin on Windows
- Added ability to set above mentioned option in mysql and mysqldump
programs on Windows
- Added cmake changes to discover following kerberos libraries
if WITH_KERBEROS or new option - WITH_KERBEROS_WIN is specified.
- krb5_64
- gssapi64
- comerr64
- k5sprt64
- krbcc64
- xpprof64

Change-Id: I83eb68cd3bf0e6b0c736c75873fe07d964caf5de

Author: harinvadodaria

client/client_priv.h

@@ -183,6 +183,7 @@ enum options_client {
   OPT_SSL_SESSION_DATA,
   OPT_SSL_SESSION_DATA_CONTINUE_ON_FAILED_REUSE,
   OPT_LONG_QUERY_TIME,
+  OPT_AUTHENTICATION_KERBEROS_CLIENT_MODE,
   /* Add new option above this */
   OPT_MAX_CLIENT_OPTION
 };

client/mysql.cc

@@ -234,6 +234,7 @@ static const CHARSET_INFO *charset_info = &my_charset_latin1;
 static char *opt_fido_register_factor = nullptr;
 static char *opt_oci_config_file = nullptr;
 
+#include "authentication_kerberos_clientopt-vars.h"
 #include "caching_sha2_passwordopt-vars.h"
 #include "multi_factor_passwordopt-vars.h"
 #include "sslopt-vars.h"
@@ -1959,6 +1960,7 @@ static struct my_option my_long_options[] = {
      "is ~/.oci/config and %HOME/.oci/config on Windows.",
      &opt_oci_config_file, &opt_oci_config_file, nullptr, GET_STR, REQUIRED_ARG,
      0, 0, 0, nullptr, 0, nullptr},
+#include "authentication_kerberos_clientopt-longopts.h"
     {nullptr, 0, nullptr, nullptr, nullptr, nullptr, GET_NO_ARG, NO_ARG, 0, 0,
      0, nullptr, 0, nullptr}};
 
@@ -2085,6 +2087,8 @@ bool get_one_option(int optid, const struct my_option *opt [[maybe_unused]],
       break;
 #include "sslopt-case.h"
 
+#include "authentication_kerberos_clientopt-case.h"
+
     case 'V':
       usage(1);
       exit(0);
@@ -4767,6 +4771,15 @@ static bool init_connection_options(MYSQL *mysql) {
       return 1;
     }
   }
+
+#if defined(_WIN32)
+  char error[256]{0};
+  if (set_authentication_kerberos_client_mode(mysql, error, 255)) {
+    put_info(error, INFO_ERROR);
+    return 1;
+  }
+#endif
+
   return false;
 }
 

client/mysqldump.cc

@@ -162,6 +162,7 @@ static uint my_end_arg;
 static char *opt_mysql_unix_port = nullptr;
 static char *opt_bind_addr = nullptr;
 static int first_error = 0;
+#include "authentication_kerberos_clientopt-vars.h"
 #include "caching_sha2_passwordopt-vars.h"
 #include "multi_factor_passwordopt-vars.h"
 #include "sslopt-vars.h"
@@ -659,6 +660,7 @@ static struct my_option my_long_options[] = {
      "be dumped or not.",
      &opt_skip_gipk, &opt_skip_gipk, nullptr, GET_BOOL, NO_ARG, 0, 0, 0,
      nullptr, 0, nullptr},
+#include "authentication_kerberos_clientopt-longopts.h"
     {nullptr, 0, nullptr, nullptr, nullptr, nullptr, GET_NO_ARG, NO_ARG, 0, 0,
      0, nullptr, 0, nullptr}};
 
@@ -895,6 +897,8 @@ static bool get_one_option(int optid, const struct my_option *opt,
       break;
 #include "sslopt-case.h"
 
+#include "authentication_kerberos_clientopt-case.h"
+
     case 'V':
       print_version();
       exit(0);
@@ -1593,6 +1597,14 @@ static int connect_to_db(char *host, char *user) {
   set_get_server_public_key_option(&mysql_connection);
   set_password_options(&mysql_connection);
 
+#if defined(_WIN32)
+  char error[256]{0};
+  if (set_authentication_kerberos_client_mode(&mysql_connection, error, 255)) {
+    fprintf(stderr, "%s", error);
+    return 1;
+  }
+#endif /* _WIN32 */
+
   if (opt_compress_algorithm)
     mysql_options(&mysql_connection, MYSQL_OPT_COMPRESSION_ALGORITHMS,
                   opt_compress_algorithm);