mirror of
https://github.com/MariaDB/server.git
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ce4c56db0c
- Modify backup code to work with MariaDB's 10.1 xtradb - Remove crypt encryption, version_check.pl, "compact backup" - Add encryption plugin
157 lines
3.7 KiB
C++
157 lines
3.7 KiB
C++
#include <mysqld.h>
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#include <mysql.h>
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#include <xtrabackup.h>
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#include <encryption_plugin.h>
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#include <backup_copy.h>
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#include <sql_plugin.h>
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#include <sstream>
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#include <vector>
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#include <common.h>
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#include <backup_mysql.h>
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extern struct st_maria_plugin *mysql_optional_plugins[];
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extern struct st_maria_plugin *mysql_mandatory_plugins[];
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static void encryption_plugin_init(int argc, char **argv);
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extern char *xb_plugin_load;
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extern char *xb_plugin_dir;
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const int PLUGIN_MAX_ARGS = 1024;
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vector<string> backup_plugins_args;
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const char *QUERY_PLUGIN =
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"SELECT plugin_name, plugin_library, @@plugin_dir"
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" FROM information_schema.plugins WHERE plugin_type='ENCRYPTION'"
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" AND plugin_status='ACTIVE'";
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string encryption_plugin_config;
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static void add_to_plugin_load_list(const char *plugin_def)
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{
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opt_plugin_load_list_ptr->push_back(new i_string(plugin_def));
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}
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static char XTRABACKUP_EXE[] = "xtrabackup";
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void encryption_plugin_backup_init(MYSQL *mysql)
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{
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MYSQL_RES *result;
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MYSQL_ROW row;
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ostringstream oss;
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char *argv[PLUGIN_MAX_ARGS];
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int argc;
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result = xb_mysql_query(mysql, QUERY_PLUGIN, true, true);
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row = mysql_fetch_row(result);
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if (!row)
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{
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mysql_free_result(result);
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return;
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}
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char *name= row[0];
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char *library= row[1];
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char *dir= row[2];
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#ifdef _WIN32
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for (char *p = dir; *p; p++)
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if (*p == '\\') *p = '/';
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#endif
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string plugin_load(name);
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if (library)
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plugin_load += string("=") + library;
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oss << "plugin_load=" << plugin_load << endl;
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/* Required to load the plugin later.*/
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add_to_plugin_load_list(plugin_load.c_str());
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strncpy(opt_plugin_dir, dir, FN_REFLEN);
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oss << "plugin_dir=" << '"' << dir << '"' << endl;
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/* Read plugin variables. */
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char query[1024];
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snprintf(query, 1024, "SHOW variables like '%s_%%'", name);
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mysql_free_result(result);
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result = xb_mysql_query(mysql, query, true, true);
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while ((row = mysql_fetch_row(result)))
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{
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string arg("--");
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arg += row[0];
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arg += "=";
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arg += row[1];
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backup_plugins_args.push_back(arg);
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oss << row[0] << "=" << row[1] << endl;
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}
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mysql_free_result(result);
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/* Check whether to encrypt logs. */
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result = xb_mysql_query(mysql, "select @@innodb_encrypt_log", true, true);
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row = mysql_fetch_row(result);
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srv_encrypt_log = (row != 0 && row[0][0] == '1');
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oss << "innodb_encrypt_log=" << row[0] << endl;
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mysql_free_result(result);
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encryption_plugin_config = oss.str();
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argc = 0;
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argv[argc++] = XTRABACKUP_EXE;
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for(size_t i = 0; i < backup_plugins_args.size(); i++)
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{
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argv[argc++] = (char *)backup_plugins_args[i].c_str();
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if (argc == PLUGIN_MAX_ARGS - 2)
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break;
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}
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argv[argc] = 0;
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encryption_plugin_init(argc, argv);
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}
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const char *encryption_plugin_get_config()
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{
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return encryption_plugin_config.c_str();
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}
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extern int finalize_encryption_plugin(st_plugin_int *plugin);
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void encryption_plugin_prepare_init(int argc, char **argv)
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{
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if (!xb_plugin_load)
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{
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/* This prevents crashes e.g in --stats with wrong my.cnf*/
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finalize_encryption_plugin(0);
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return;
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}
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add_to_plugin_load_list(xb_plugin_load);
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if (xb_plugin_dir)
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strncpy(opt_plugin_dir, xb_plugin_dir, FN_REFLEN);
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char **new_argv = new char *[argc + 1];
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new_argv[0] = XTRABACKUP_EXE;
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memcpy(&new_argv[1], argv, argc*sizeof(char *));
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encryption_plugin_init(argc+1, new_argv);
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delete[] new_argv;
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}
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static void encryption_plugin_init(int argc, char **argv)
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{
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/* Patch optional and mandatory plugins, we only need to load the one in xb_plugin_load. */
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mysql_optional_plugins[0] = mysql_mandatory_plugins[0] = 0;
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msg("Loading encryption plugin\n");
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for (int i= 1; i < argc; i++)
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msg("\t Encryption plugin parameter : '%s'\n", argv[i]);
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plugin_init(&argc, argv, PLUGIN_INIT_SKIP_PLUGIN_TABLE);
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}
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