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Now that we are dynamically allocating safer_username and safer_password, need to free them. Also, don't strlen them multiple times for efficiency

This commit is contained in:
Isaac Connor 2019-01-25 08:46:40 -05:00
parent c0fa2cc335
commit 33ff7de899
1 changed files with 13 additions and 6 deletions
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19
src/zm_user.cpp
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@ -100,15 +100,21 @@ bool User::canAccess( int monitor_id )
// Please note that in auth relay mode = none, password is NULL
User *zmLoadUser( const char *username, const char *password ) {
char sql[ZM_SQL_MED_BUFSIZ] = "";
char *safer_username = new char[(strlen(username) * 2) + 1];
int username_length = strlen(username);
char *safer_username = new char[(username_length * 2) + 1];
// According to docs, size of safer_whatever must be 2*length+1 due to unicode conversions + null terminator.
mysql_real_escape_string(&dbconn, safer_username, username, strlen( username ) );
mysql_real_escape_string(&dbconn, safer_username, username, username_length );
if ( password ) {
char *safer_password = new char[(strlen(password) * 2) +1];
mysql_real_escape_string(&dbconn, safer_password, password, strlen( password ) );
snprintf( sql, sizeof(sql), "select Username, Password, Enabled, Stream+0, Events+0, Control+0, Monitors+0, System+0, MonitorIds from Users where Username = '%s' and Password = password('%s') and Enabled = 1", safer_username, safer_password );
int password_length = strlen(password);
char *safer_password = new char[(password_length * 2) + 1];
mysql_real_escape_string(&dbconn, safer_password, password, password_length);
snprintf(sql, sizeof(sql),
"SELECT Id, Username, Password, Enabled, Stream+0, Events+0, Control+0, Monitors+0, System+0, MonitorIds"
" FROM Users WHERE Username = '%s' AND Password = password('%s') AND Enabled = 1",
safer_username, safer_password );
delete safer_password;
} else {
snprintf( sql, sizeof(sql), "select Username, Password, Enabled, Stream+0, Events+0, Control+0, Monitors+0, System+0, MonitorIds from Users where Username = '%s' and Enabled = 1", safer_username );
}
@ -138,7 +144,8 @@ User *zmLoadUser( const char *username, const char *password ) {
User *user = new User( dbrow );
Info( "Authenticated user '%s'", user->getUsername() );
mysql_free_result( result );
mysql_free_result(result);
delete safer_username;
return( user );
}