908 lines
27 KiB
C
908 lines
27 KiB
C
/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2020-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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/**
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* Loading MySQL users from a MySQL backend server
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*/
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#include "mysql_auth.h"
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#include <ctype.h>
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#include <netdb.h>
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#include <stdio.h>
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#include <maxscale/alloc.h>
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#include <maxscale/dcb.h>
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#include <maxscale/log_manager.h>
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#include <maxscale/mysql_utils.h>
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#include <maxscale/paths.h>
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#include <maxscale/protocol/mysql.h>
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#include <maxscale/router.h>
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#include <maxscale/secrets.h>
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#include <maxscale/service.h>
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#include <maxscale/users.h>
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#include <maxscale/utils.h>
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/** Don't include the root user */
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#define USERS_QUERY_NO_ROOT " AND user.user NOT IN ('root')"
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/** Normal password column name */
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#define MYSQL_PASSWORD "password"
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/** MySQL 5.7 password column name */
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#define MYSQL57_PASSWORD "authentication_string"
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#define NEW_LOAD_DBUSERS_QUERY "SELECT u.user, u.host, d.db, u.select_priv, u.%s \
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FROM mysql.user AS u LEFT JOIN mysql.db AS d \
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ON (u.user = d.user AND u.host = d.host) %s \
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UNION \
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SELECT u.user, u.host, t.db, u.select_priv, u.%s \
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FROM mysql.user AS u LEFT JOIN mysql.tables_priv AS t \
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ON (u.user = t.user AND u.host = t.host) %s"
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static int get_users(SERV_LISTENER *listener, bool skip_local);
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static MYSQL *gw_mysql_init(void);
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static int gw_mysql_set_timeouts(MYSQL* handle);
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static char *mysql_format_user_entry(void *data);
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static bool get_hostname(DCB *dcb, char *client_hostname, size_t size);
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static char* get_new_users_query(const char *server_version, bool include_root)
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{
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const char* password = strstr(server_version, "5.7.") ? MYSQL57_PASSWORD : MYSQL_PASSWORD;
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const char *with_root = include_root ? "" : "WHERE u.user NOT IN ('root')";
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size_t n_bytes = snprintf(NULL, 0, NEW_LOAD_DBUSERS_QUERY, password, with_root, password, with_root);
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char *rval = MXS_MALLOC(n_bytes + 1);
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if (rval)
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{
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snprintf(rval, n_bytes + 1, NEW_LOAD_DBUSERS_QUERY, password, with_root, password, with_root);
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}
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return rval;
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}
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int replace_mysql_users(SERV_LISTENER *listener, bool skip_local)
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{
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spinlock_acquire(&listener->lock);
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int i = get_users(listener, skip_local);
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spinlock_release(&listener->lock);
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return i;
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}
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static bool check_password(const char *output, uint8_t *token, size_t token_len,
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uint8_t *scramble, size_t scramble_len, uint8_t *phase2_scramble)
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{
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uint8_t stored_token[SHA_DIGEST_LENGTH] = {};
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size_t stored_token_len = sizeof(stored_token);
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if (*output)
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{
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/** Convert the hexadecimal string to binary */
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gw_hex2bin(stored_token, output, strlen(output));
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}
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/**
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* The client authentication token is made up of:
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*
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* XOR( SHA1(real_password), SHA1( CONCAT( scramble, <value of mysql.user.password> ) ) )
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*
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* Since we know the scramble and the value stored in mysql.user.password,
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* we can extract the SHA1 of the real password by doing a XOR of the client
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* authentication token with the SHA1 of the scramble concatenated with the
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* value of mysql.user.password.
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*
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* Once we have the SHA1 of the original password, we can create the SHA1
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* of this hash and compare the value with the one stored in the backend
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* database. If the values match, the user has sent the right password.
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*/
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/** First, calculate the SHA1 of the scramble and the hash stored in the database */
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uint8_t step1[SHA_DIGEST_LENGTH];
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gw_sha1_2_str(scramble, scramble_len, stored_token, stored_token_len, step1);
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/** Next, extract the SHA1 of the real password by XOR'ing it with
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* the output of the previous calculation */
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uint8_t step2[SHA_DIGEST_LENGTH];
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gw_str_xor(step2, token, step1, token_len);
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/** The phase 2 scramble needs to be copied to the shared data structure as it
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* is required when the backend authentication is done. */
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memcpy(phase2_scramble, step2, SHA_DIGEST_LENGTH);
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/** Finally, calculate the SHA1 of the hashed real password */
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uint8_t final_step[SHA_DIGEST_LENGTH];
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gw_sha1_str(step2, SHA_DIGEST_LENGTH, final_step);
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/** If the two values match, the client has sent the correct password */
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return memcmp(final_step, stored_token, stored_token_len) == 0;
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}
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/** Callback for check_database() */
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static int database_cb(void *data, int columns, char** rows, char** row_names)
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{
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bool *rval = (bool*)data;
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*rval = true;
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return 0;
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}
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static bool check_database(sqlite3 *handle, const char *database)
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{
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bool rval = true;
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if (*database)
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{
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rval = false;
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size_t len = sizeof(mysqlauth_validate_database_query) + strlen(database) + 1;
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char sql[len];
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sprintf(sql, mysqlauth_validate_database_query, database);
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char *err;
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if (sqlite3_exec(handle, sql, database_cb, &rval, &err) != SQLITE_OK)
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{
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MXS_ERROR("Failed to execute auth query: %s", err);
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sqlite3_free(err);
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rval = false;
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}
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}
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return rval;
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}
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static bool no_password_required(const char *result, size_t tok_len)
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{
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return *result == '\0' && tok_len == 0;
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}
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/** Used to detect empty result sets */
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struct user_query_result
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{
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bool ok;
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char output[SHA_DIGEST_LENGTH * 2 + 1];
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};
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/** @brief Callback for sqlite3_exec() */
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static int auth_cb(void *data, int columns, char** rows, char** row_names)
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{
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struct user_query_result *res = (struct user_query_result*)data;
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strcpy(res->output, rows[0] ? rows[0] : "");
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res->ok = true;
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return 0;
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}
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int validate_mysql_user(MYSQL_AUTH* instance, DCB *dcb, MYSQL_session *session,
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uint8_t *scramble, size_t scramble_len)
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{
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sqlite3 *handle = instance->handle;
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size_t len = sizeof(mysqlauth_validate_user_query) + strlen(session->user) * 2 +
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strlen(session->db) * 2 + MYSQL_HOST_MAXLEN + session->auth_token_len * 4 + 1;
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char sql[len + 1];
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int rval = MXS_AUTH_FAILED;
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char *err;
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if (instance->skip_auth)
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{
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sprintf(sql, mysqlauth_skip_auth_query, session->user, session->db, session->db);
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}
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else
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{
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sprintf(sql, mysqlauth_validate_user_query, session->user, dcb->remote,
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dcb->remote, session->db, session->db);
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}
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struct user_query_result res = {};
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if (sqlite3_exec(handle, sql, auth_cb, &res, &err) != SQLITE_OK)
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{
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MXS_ERROR("Failed to execute auth query: %s", err);
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sqlite3_free(err);
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}
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/** Check for IPv6 mapped IPv4 address */
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if (!res.ok && strchr(dcb->remote, ':') && strchr(dcb->remote, '.'))
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{
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const char *ipv4 = strrchr(dcb->remote, ':') + 1;
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sprintf(sql, mysqlauth_validate_user_query, session->user, ipv4, ipv4,
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session->db, session->db);
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if (sqlite3_exec(handle, sql, auth_cb, &res, &err) != SQLITE_OK)
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{
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MXS_ERROR("Failed to execute auth query: %s", err);
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sqlite3_free(err);
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}
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}
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if (!res.ok)
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{
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/**
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* Try authentication with the hostname instead of the IP. We do this only
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* as a last resort so we avoid the high cost of the DNS lookup.
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*/
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char client_hostname[MYSQL_HOST_MAXLEN];
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get_hostname(dcb, client_hostname, sizeof(client_hostname) - 1);
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sprintf(sql, mysqlauth_validate_user_query, session->user, client_hostname,
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client_hostname, session->db, session->db);
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if (sqlite3_exec(handle, sql, auth_cb, &res, &err) != SQLITE_OK)
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{
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MXS_ERROR("Failed to execute auth query: %s", err);
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sqlite3_free(err);
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}
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}
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if (res.ok)
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{
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/** Found a matching row */
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if (no_password_required(res.output, session->auth_token_len) ||
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check_password(res.output, session->auth_token, session->auth_token_len,
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scramble, scramble_len, session->client_sha1))
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{
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/** Password is OK, check that the database exists */
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if (check_database(handle, session->db))
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{
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rval = MXS_AUTH_SUCCEEDED;
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}
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else
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{
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rval = MXS_AUTH_FAILED_DB;
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}
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}
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}
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return rval;
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}
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/**
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* @brief Delete all users
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*
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* @param handle SQLite handle
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*/
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static bool delete_mysql_users(sqlite3 *handle)
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{
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bool rval = true;
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char *err;
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if (sqlite3_exec(handle, delete_users_query, NULL, NULL, &err) != SQLITE_OK ||
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sqlite3_exec(handle, delete_databases_query, NULL, NULL, &err) != SQLITE_OK)
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{
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MXS_ERROR("Failed to delete old users: %s", err);
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sqlite3_free(err);
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rval = false;
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}
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return rval;
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}
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/**
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* If the hostname is of form a.b.c.d/e.f.g.h where e-h is 255 or 0, replace
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* the zeros in the first part with '%' and remove the second part. This does
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* not yet support netmasks completely, but should be sufficient for most
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* situations. In case of error, the hostname may end in an invalid state, which
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* will cause an error later on.
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*
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* @param host The hostname, which is modified in-place. If merging is unsuccessful,
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* it may end up garbled.
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*/
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static void merge_netmask(char *host)
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{
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char *delimiter_loc = strchr(host, '/');
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if (delimiter_loc == NULL)
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{
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return; // Nothing to do
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}
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/* If anything goes wrong, we put the '/' back in to ensure the hostname
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* cannot be used.
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*/
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*delimiter_loc = '\0';
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char *ip_token_loc = host;
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char *mask_token_loc = delimiter_loc + 1; // This is at minimum a \0
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while (ip_token_loc && mask_token_loc)
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{
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if (strncmp(mask_token_loc, "255", 3) == 0)
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{
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// Skip
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}
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else if (*mask_token_loc == '0' && *ip_token_loc == '0')
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{
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*ip_token_loc = '%';
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}
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else
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{
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/* Any other combination is considered invalid. This may leave the
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* hostname in a partially modified state.
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* TODO: handle more cases
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*/
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*delimiter_loc = '/';
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MXS_ERROR("Unrecognized IP-bytes in host/mask-combination. "
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"Merge incomplete: %s", host);
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return;
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}
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ip_token_loc = strchr(ip_token_loc, '.');
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mask_token_loc = strchr(mask_token_loc, '.');
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if (ip_token_loc && mask_token_loc)
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{
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ip_token_loc++;
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mask_token_loc++;
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}
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}
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if (ip_token_loc || mask_token_loc)
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{
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*delimiter_loc = '/';
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MXS_ERROR("Unequal number of IP-bytes in host/mask-combination. "
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"Merge incomplete: %s", host);
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}
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}
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void add_mysql_user(sqlite3 *handle, const char *user, const char *host,
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const char *db, bool anydb, const char *pw)
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{
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size_t dblen = db && *db ? strlen(db) + 2 : sizeof(null_token); /** +2 for single quotes */
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char dbstr[dblen + 1];
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if (db && *db)
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{
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sprintf(dbstr, "'%s'", db);
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}
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else
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{
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strcpy(dbstr, null_token);
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}
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size_t pwlen = pw && *pw ? strlen(pw) + 2 : sizeof(null_token); /** +2 for single quotes */
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char pwstr[pwlen + 1];
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if (pw && *pw)
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{
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if (strlen(pw) == 16)
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{
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MXS_ERROR("The user %s@%s has on old password in the "
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"backend database. MaxScale does not support these "
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"old passwords. This user will not be able to connect "
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"via MaxScale. Update the users password to correct "
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"this.", user, host);
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return;
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}
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else if (*pw == '*')
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{
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pw++;
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}
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sprintf(pwstr, "'%s'", pw);
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}
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else
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{
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strcpy(pwstr, null_token);
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}
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size_t len = sizeof(insert_user_query) + strlen(user) + strlen(host) + dblen + pwlen + 1;
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char insert_sql[len + 1];
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sprintf(insert_sql, insert_user_query, user, host, dbstr, anydb ? "1" : "0", pwstr);
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char *err;
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if (sqlite3_exec(handle, insert_sql, NULL, NULL, &err) != SQLITE_OK)
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{
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MXS_ERROR("Failed to insert user: %s", err);
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sqlite3_free(err);
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}
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MXS_INFO("Added user: %s", insert_sql);
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}
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static void add_database(sqlite3 *handle, const char *db)
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{
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size_t len = sizeof(insert_database_query) + strlen(db) + 1;
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char insert_sql[len + 1];
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sprintf(insert_sql, insert_database_query, db);
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char *err;
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if (sqlite3_exec(handle, insert_sql, NULL, NULL, &err) != SQLITE_OK)
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{
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MXS_ERROR("Failed to insert database: %s", err);
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sqlite3_free(err);
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}
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}
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/**
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* Returns a MYSQL object suitably configured.
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*
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* @return An object or NULL if something fails.
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*/
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MYSQL *gw_mysql_init()
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{
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MYSQL* con = mysql_init(NULL);
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if (con)
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{
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if (gw_mysql_set_timeouts(con) != 0)
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{
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MXS_ERROR("Failed to set timeout values for backend connection.");
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mysql_close(con);
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con = NULL;
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}
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}
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else
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{
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MXS_ERROR("mysql_init: %s", mysql_error(NULL));
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}
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return con;
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}
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/**
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* Set read, write and connect timeout values for MySQL database connection.
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*
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* @param handle MySQL handle
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* @param read_timeout Read timeout value in seconds
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* @param write_timeout Write timeout value in seconds
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* @param connect_timeout Connect timeout value in seconds
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*
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* @return 0 if succeed, 1 if failed
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*/
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static int gw_mysql_set_timeouts(MYSQL* handle)
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{
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int rc;
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MXS_CONFIG* cnf = config_get_global_options();
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if ((rc = mysql_optionsv(handle, MYSQL_OPT_READ_TIMEOUT,
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(void *) &cnf->auth_read_timeout)))
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{
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MXS_ERROR("Failed to set read timeout for backend connection.");
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goto retblock;
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}
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if ((rc = mysql_optionsv(handle, MYSQL_OPT_CONNECT_TIMEOUT,
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(void *) &cnf->auth_conn_timeout)))
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{
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MXS_ERROR("Failed to set connect timeout for backend connection.");
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goto retblock;
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}
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if ((rc = mysql_optionsv(handle, MYSQL_OPT_WRITE_TIMEOUT,
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(void *) &cnf->auth_write_timeout)))
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{
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MXS_ERROR("Failed to set write timeout for backend connection.");
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goto retblock;
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}
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retblock:
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return rc;
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}
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/**
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* @brief Check service permissions on one server
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*
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* @param server Server to check
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* @param user Username
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* @param password Password
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* @return True if the service permissions are OK, false if one or more permissions
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* are missing.
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*/
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static bool check_server_permissions(SERVICE *service, SERVER* server,
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const char* user, const char* password)
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{
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MYSQL *mysql = gw_mysql_init();
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if (mysql == NULL)
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{
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return false;
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}
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MXS_CONFIG* cnf = config_get_global_options();
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mysql_optionsv(mysql, MYSQL_OPT_READ_TIMEOUT, &cnf->auth_read_timeout);
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mysql_optionsv(mysql, MYSQL_OPT_CONNECT_TIMEOUT, &cnf->auth_conn_timeout);
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mysql_optionsv(mysql, MYSQL_OPT_WRITE_TIMEOUT, &cnf->auth_write_timeout);
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|
mysql_optionsv(mysql, MYSQL_PLUGIN_DIR, get_connector_plugindir());
|
|
|
|
if (mxs_mysql_real_connect(mysql, server, user, password) == NULL)
|
|
{
|
|
int my_errno = mysql_errno(mysql);
|
|
|
|
MXS_ERROR("[%s] Failed to connect to server '%s' ([%s]:%d) when"
|
|
" checking authentication user credentials and permissions: %d %s",
|
|
service->name, server->unique_name, server->name, server->port,
|
|
my_errno, mysql_error(mysql));
|
|
|
|
mysql_close(mysql);
|
|
return my_errno != ER_ACCESS_DENIED_ERROR;
|
|
}
|
|
|
|
/** Copy the server charset */
|
|
MY_CHARSET_INFO cs_info;
|
|
mysql_get_character_set_info(mysql, &cs_info);
|
|
server->charset = cs_info.number;
|
|
|
|
if (server->version_string[0] == 0)
|
|
{
|
|
mxs_mysql_set_server_version(mysql, server);
|
|
}
|
|
|
|
const char *template = "SELECT user, host, %s, Select_priv FROM mysql.user limit 1";
|
|
const char* query_pw = strstr(server->version_string, "5.7.") ?
|
|
MYSQL57_PASSWORD : MYSQL_PASSWORD;
|
|
char query[strlen(template) + strlen(query_pw) + 1];
|
|
bool rval = true;
|
|
sprintf(query, template, query_pw);
|
|
|
|
if (mysql_query(mysql, query) != 0)
|
|
{
|
|
if (mysql_errno(mysql) == ER_TABLEACCESS_DENIED_ERROR)
|
|
{
|
|
MXS_ERROR("[%s] User '%s' is missing SELECT privileges"
|
|
" on mysql.user table. MySQL error message: %s",
|
|
service->name, user, mysql_error(mysql));
|
|
rval = false;
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("[%s] Failed to query from mysql.user table."
|
|
" MySQL error message: %s", service->name, mysql_error(mysql));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
|
|
MYSQL_RES* res = mysql_use_result(mysql);
|
|
if (res == NULL)
|
|
{
|
|
MXS_ERROR("[%s] Result retrieval failed when checking for permissions to "
|
|
"the mysql.user table: %s", service->name, mysql_error(mysql));
|
|
}
|
|
else
|
|
{
|
|
mysql_free_result(res);
|
|
}
|
|
}
|
|
|
|
if (mysql_query(mysql, "SELECT user, host, db FROM mysql.db limit 1") != 0)
|
|
{
|
|
if (mysql_errno(mysql) == ER_TABLEACCESS_DENIED_ERROR)
|
|
{
|
|
MXS_WARNING("[%s] User '%s' is missing SELECT privileges on mysql.db table. "
|
|
"Database name will be ignored in authentication. "
|
|
"MySQL error message: %s", service->name, user, mysql_error(mysql));
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("[%s] Failed to query from mysql.db table. MySQL error message: %s",
|
|
service->name, mysql_error(mysql));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MYSQL_RES* res = mysql_use_result(mysql);
|
|
if (res == NULL)
|
|
{
|
|
MXS_ERROR("[%s] Result retrieval failed when checking for permissions "
|
|
"to the mysql.db table: %s", service->name, mysql_error(mysql));
|
|
}
|
|
else
|
|
{
|
|
mysql_free_result(res);
|
|
}
|
|
}
|
|
|
|
if (mysql_query(mysql, "SELECT user, host, db FROM mysql.tables_priv limit 1") != 0)
|
|
{
|
|
if (mysql_errno(mysql) == ER_TABLEACCESS_DENIED_ERROR)
|
|
{
|
|
MXS_WARNING("[%s] User '%s' is missing SELECT privileges on mysql.tables_priv table. "
|
|
"Database name will be ignored in authentication. "
|
|
"MySQL error message: %s", service->name, user, mysql_error(mysql));
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("[%s] Failed to query from mysql.tables_priv table. "
|
|
"MySQL error message: %s", service->name, mysql_error(mysql));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MYSQL_RES* res = mysql_use_result(mysql);
|
|
if (res == NULL)
|
|
{
|
|
MXS_ERROR("[%s] Result retrieval failed when checking for permissions "
|
|
"to the mysql.tables_priv table: %s", service->name, mysql_error(mysql));
|
|
}
|
|
else
|
|
{
|
|
mysql_free_result(res);
|
|
}
|
|
}
|
|
|
|
mysql_close(mysql);
|
|
|
|
return rval;
|
|
}
|
|
|
|
bool check_service_permissions(SERVICE* service)
|
|
{
|
|
if (rcap_type_required(service_get_capabilities(service), RCAP_TYPE_NO_AUTH) ||
|
|
config_get_global_options()->skip_permission_checks ||
|
|
service->dbref == NULL) // No servers to check
|
|
{
|
|
return true;
|
|
}
|
|
|
|
char *user, *password;
|
|
|
|
if (serviceGetUser(service, &user, &password) == 0)
|
|
{
|
|
MXS_ERROR("[%s] Service is missing the user credentials for authentication.",
|
|
service->name);
|
|
return false;
|
|
}
|
|
|
|
char *dpasswd = decrypt_password(password);
|
|
bool rval = false;
|
|
|
|
for (SERVER_REF *server = service->dbref; server; server = server->next)
|
|
{
|
|
if (server_is_mxs_service(server->server) ||
|
|
check_server_permissions(service, server->server, user, dpasswd))
|
|
{
|
|
rval = true;
|
|
}
|
|
}
|
|
|
|
free(dpasswd);
|
|
|
|
return rval;
|
|
}
|
|
|
|
/**
|
|
* @brief Get client hostname
|
|
*
|
|
* Queries the DNS server for the client's hostname.
|
|
*
|
|
* @param ip_address Client IP address
|
|
* @param client_hostname Output buffer for hostname
|
|
*
|
|
* @return True if the hostname query was successful
|
|
*/
|
|
static bool get_hostname(DCB *dcb, char *client_hostname, size_t size)
|
|
{
|
|
struct addrinfo *ai = NULL, hint = {};
|
|
hint.ai_flags = AI_ALL;
|
|
int rc;
|
|
|
|
if ((rc = getaddrinfo(dcb->remote, NULL, &hint, &ai)) != 0)
|
|
{
|
|
MXS_ERROR("Failed to obtain address for host %s, %s",
|
|
dcb->remote, gai_strerror(rc));
|
|
return false;
|
|
}
|
|
|
|
/* Try to lookup the domain name of the given IP-address. This is a slow
|
|
* i/o-operation, which will stall the entire thread. TODO: cache results
|
|
* if this feature is used often. */
|
|
int lookup_result = getnameinfo(ai->ai_addr, ai->ai_addrlen,
|
|
client_hostname, size,
|
|
NULL, 0, // No need for the port
|
|
NI_NAMEREQD); // Text address only
|
|
freeaddrinfo(ai);
|
|
|
|
if (lookup_result != 0)
|
|
{
|
|
MXS_ERROR("Client hostname lookup failed, getnameinfo() returned: '%s'.",
|
|
gai_strerror(lookup_result));
|
|
}
|
|
else
|
|
{
|
|
MXS_DEBUG("IP-lookup success, hostname is: '%s'", client_hostname);
|
|
}
|
|
|
|
return lookup_result == 0;
|
|
}
|
|
|
|
void start_sqlite_transaction(sqlite3 *handle)
|
|
{
|
|
char *err;
|
|
if (sqlite3_exec(handle, "BEGIN", NULL, NULL, &err) != SQLITE_OK)
|
|
{
|
|
MXS_ERROR("Failed to start transaction: %s", err);
|
|
sqlite3_free(err);
|
|
}
|
|
}
|
|
|
|
void commit_sqlite_transaction(sqlite3 *handle)
|
|
{
|
|
char *err;
|
|
if (sqlite3_exec(handle, "COMMIT", NULL, NULL, &err) != SQLITE_OK)
|
|
{
|
|
MXS_ERROR("Failed to commit transaction: %s", err);
|
|
sqlite3_free(err);
|
|
}
|
|
}
|
|
|
|
int get_users_from_server(MYSQL *con, SERVER_REF *server_ref, SERVICE *service, SERV_LISTENER *listener)
|
|
{
|
|
if (server_ref->server->version_string[0] == 0)
|
|
{
|
|
mxs_mysql_set_server_version(con, server_ref->server);
|
|
}
|
|
|
|
char *query = get_new_users_query(server_ref->server->version_string, service->enable_root);
|
|
MYSQL_AUTH *instance = (MYSQL_AUTH*)listener->auth_instance;
|
|
bool anon_user = false;
|
|
int users = 0;
|
|
|
|
if (query)
|
|
{
|
|
if (mysql_query(con, query) == 0)
|
|
{
|
|
MYSQL_RES *result = mysql_store_result(con);
|
|
|
|
if (result)
|
|
{
|
|
start_sqlite_transaction(instance->handle);
|
|
|
|
MYSQL_ROW row;
|
|
|
|
while ((row = mysql_fetch_row(result)))
|
|
{
|
|
if (service->strip_db_esc)
|
|
{
|
|
strip_escape_chars(row[2]);
|
|
}
|
|
|
|
if (strchr(row[1], '/'))
|
|
{
|
|
merge_netmask(row[1]);
|
|
}
|
|
|
|
add_mysql_user(instance->handle, row[0], row[1], row[2],
|
|
row[3] && strcmp(row[3], "Y") == 0, row[4]);
|
|
users++;
|
|
|
|
if (row[0] && *row[0] == '\0')
|
|
{
|
|
/** Empty username is used for the anonymous user. This means
|
|
that localhost does not match wildcard host. */
|
|
anon_user = true;
|
|
}
|
|
}
|
|
|
|
commit_sqlite_transaction(instance->handle);
|
|
|
|
mysql_free_result(result);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("Failed to load users: %s", mysql_error(con));
|
|
}
|
|
|
|
MXS_FREE(query);
|
|
}
|
|
|
|
/** Set the parameter if it is not configured by the user */
|
|
if (service->localhost_match_wildcard_host == SERVICE_PARAM_UNINIT)
|
|
{
|
|
service->localhost_match_wildcard_host = anon_user ? 0 : 1;
|
|
}
|
|
|
|
/** Load the list of databases */
|
|
if (mysql_query(con, "SHOW DATABASES") == 0)
|
|
{
|
|
MYSQL_RES *result = mysql_store_result(con);
|
|
if (result)
|
|
{
|
|
MYSQL_ROW row;
|
|
while ((row = mysql_fetch_row(result)))
|
|
{
|
|
add_database(instance->handle, row[0]);
|
|
}
|
|
|
|
mysql_free_result(result);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("Failed to load list of databases: %s", mysql_error(con));
|
|
}
|
|
|
|
return users;
|
|
}
|
|
|
|
/**
|
|
* Load the user/passwd form mysql.user table into the service users' hashtable
|
|
* environment.
|
|
*
|
|
* @param service The current service
|
|
* @param users The users table into which to load the users
|
|
* @return -1 on any error or the number of users inserted
|
|
*/
|
|
static int get_users(SERV_LISTENER *listener, bool skip_local)
|
|
{
|
|
char *service_user = NULL;
|
|
char *service_passwd = NULL;
|
|
SERVICE *service = listener->service;
|
|
|
|
if (serviceGetUser(service, &service_user, &service_passwd) == 0)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
char *dpwd = decrypt_password(service_passwd);
|
|
|
|
if (dpwd == NULL)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
/** Delete the old users */
|
|
MYSQL_AUTH *instance = (MYSQL_AUTH*)listener->auth_instance;
|
|
delete_mysql_users(instance->handle);
|
|
|
|
SERVER_REF *server = service->dbref;
|
|
int total_users = -1;
|
|
|
|
for (server = service->dbref; !service->svc_do_shutdown && server; server = server->next)
|
|
{
|
|
if (skip_local && server_is_mxs_service(server->server))
|
|
{
|
|
total_users = 0;
|
|
continue;
|
|
}
|
|
|
|
MYSQL *con = gw_mysql_init();
|
|
if (con)
|
|
{
|
|
if (mxs_mysql_real_connect(con, server->server, service_user, dpwd) == NULL)
|
|
{
|
|
MXS_ERROR("Failure loading users data from backend "
|
|
"[%s:%i] for service [%s]. MySQL error %i, %s",
|
|
server->server->name, server->server->port,
|
|
service->name, mysql_errno(con), mysql_error(con));
|
|
mysql_close(con);
|
|
}
|
|
else
|
|
{
|
|
/** Successfully connected to a server */
|
|
int users = get_users_from_server(con, server, service, listener);
|
|
|
|
if (users > total_users)
|
|
{
|
|
total_users = users;
|
|
}
|
|
|
|
mysql_close(con);
|
|
|
|
if (!service->users_from_all)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
MXS_FREE(dpwd);
|
|
|
|
if (server == NULL && total_users == -1)
|
|
{
|
|
MXS_ERROR("Unable to get user data from backend database for service [%s]."
|
|
" Failed to connect to any of the backend databases.", service->name);
|
|
}
|
|
|
|
return total_users;
|
|
}
|