94 lines
4.1 KiB
C++
94 lines
4.1 KiB
C++
/**
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* @file bug653.cpp regression case for bug 653 ("Memory corruption when users with long hostnames that can
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* no the resolved are loaded into MaxScale")
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*
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* - CREATE USER
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*'user_with_very_long_hostname'@'very_long_hostname_that_can_not_be_resolved_and_it_probably_caused_crash.com.net.org'
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* IDENTIFIED BY 'old';
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* - try to connect using user 'user_with_very_long_hostname'
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* - DROP USER
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*'user_with_very_long_hostname'@'very_long_hostname_that_can_not_be_resolved_and_it_probably_caused_crash.com.net.org'
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* - check MaxScale is alive
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*/
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/*
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* Mark Riddoch 2014-12-16 13:17:25 UTC
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* Program received signal SIGSEGV, Segmentation fault.
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* 0x00007ffff49385ac in free () from /lib64/libc.so.6
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* Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.47.el6_2.12.x86_64
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* keyutils-libs-1.4-4.el6.x86_64 krb5-libs-1.10.3-10.el6_4.2.x86_64 libaio-0.3.107-10.el6.x86_64
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* libcom_err-1.41.12-14.el6.x86_64 libgcc-4.4.7-4.el6.x86_64 libselinux-2.0.94-5.3.el6_4.1.x86_64
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* libstdc++-4.4.7-4.el6.x86_64 nss-pam-ldapd-0.7.5-14.el6_2.1.x86_64
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* nss-softokn-freebl-3.14.3-10.el6_5.x86_64 openssl-1.0.1e-16.el6_5.15.x86_64 zlib-1.2.3-29.el6.x86_64
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* (gdb) where
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#0 0x00007ffff49385ac in free () from /lib64/libc.so.6
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#1 0x000000000041d421 in add_mysql_users_with_host_ipv4 (users=0x72c4c0,
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* user=0x739030 "u3", host=0x739033 "aver.log.hostname.to.overflow.the.buffer",
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* passwd=0x73905c "", anydb=0x739089 "Y", db=0x0) at dbusers.c:291
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#2 0x000000000041e302 in getUsers (service=0x728ef0, users=0x72c4c0)
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* at dbusers.c:742
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#3 0x000000000041cf97 in load_mysql_users (service=0x728ef0) at dbusers.c:99
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#4 0x00000000004128c7 in serviceStartPort (service=0x728ef0, port=0x729b70)
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* at service.c:227
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#5 0x0000000000412e27 in serviceStart (service=0x728ef0) at service.c:365
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#6 0x0000000000412f00 in serviceStartAll () at service.c:413
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#7 0x000000000040b592 in main (argc=2, argv=0x7fffffffe108) at gateway.c:1750
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* Comment 1 Mark Riddoch 2014-12-16 13:18:09 UTC
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* The problem is a buffer overrun in normalise_hostname. Fix underway.
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* Comment 2 Mark Riddoch 2014-12-16 15:45:59 UTC
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* Increased buffer size to prevent overrun issue
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* Comment 3 Timofey Turenko 2014-12-22 15:39:32 UTC
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* I'm not sure I understand the bug correctly.
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* But 60-chars long host name does not cause problem (longer is not possible "String
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* 'very_long_hostname_that_can_not_be_resolved_and_it_probably_caused_cra' is too long for host name (should
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* be no longer than 60)"
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*/
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#include <iostream>
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#include "testconnections.h"
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int main(int argc, char* argv[])
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{
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TestConnections* Test = new TestConnections(argc, argv);
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Test->set_timeout(50);
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Test->maxscales->connect_maxscale(0);
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Test->tprintf("Creating user with old style password\n");
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Test->try_query(Test->maxscales->conn_rwsplit[0],
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(char*) "CREATE USER 'user_long_host11'@'very_long_hostname_that_probably_caused_crashhh.com.net.org' IDENTIFIED BY 'old'");
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Test->try_query(Test->maxscales->conn_rwsplit[0],
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(char*) "GRANT ALL PRIVILEGES ON *.* TO 'user_long_host11'@'very_long_hostname_that_probably_caused_crashhh.com.net.org' WITH GRANT OPTION");
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sleep(10);
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Test->tprintf("Trying to connect using user with old style password\n");
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MYSQL* conn = open_conn(Test->maxscales->rwsplit_port[0],
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Test->maxscales->IP[0],
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(char*) "user_long_host11",
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(char*) "old",
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Test->ssl);
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if (mysql_errno(conn) != 0)
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{
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Test->tprintf("Connections is not open as expected\n");
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}
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else
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{
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Test->add_result(1, "Connections is open for the user with bad host\n");
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}
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if (conn != NULL)
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{
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mysql_close(conn);
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}
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Test->try_query(Test->maxscales->conn_rwsplit[0],
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(char*) "DROP USER 'user_long_host11'@'very_long_hostname_that_probably_caused_crashhh.com.net.org'");
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Test->maxscales->close_maxscale_connections(0);
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Test->check_maxscale_alive(0);
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int rval = Test->global_result;
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delete Test;
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return rval;
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}
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