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• shell_exec syntax error. running in terminal directly is ok

  - by Alex

  Having this command: $command = "diff -bBdH --ignore-all-space <(echo 'hi') <(echo 'hi1')"; echo $command; $result = shell_exec($command); On the screen I see: sh: 1: Syntax error: "(" unexpected diff -bBdH --ignore-all-space <(echo 'hi') <(echo 'hi1') If I copy-paste the second line from the console output into the terminal, the result would be correct. (Reproduced on another machine too). I'm missing something dead simple here and can't see what it is. besides, why is my output reversed? I'm clearly echoing the command before executing it, thus the syntax error of the shell should appear after the shell_exec

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• Drupal removing javascript from Full HTML link

  - by Jen

  I am new to Drupal and am trying to create a node (let's call it child) that will only really be accessed when clicked on from another node (we'll call it parent). When closing the child window, I want to parent window to refresh. Outside of Drupal, that's easy: <a onclick="window.close(); window.opener.location.reload();" href="#">Click to close this window</a> However, when I type this into the body of a node using Full HTML, it still strips the onclick text from my post. How can I include javascript in the body of a node like this? Is there a special module I need. Thanks!

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• Restricting numeric input javascript problem

  - by neitony

  I'm trying to figure out why my javascript code is not restricting numeric input. Here's the code below: (function(){ if(window.addEventListener) window.addEventListener("load",init,false); else if(window.attachEvent) window.attachEvent("onload",init); function init() { var keytest = document.getElementById("keytest"); function numericinput(event) { var e = event || window.event; var key = e.charcode || e.keyCode; var regex =/^\d+\.?\d{4}$/; key = String.fromCharCode(key); if (!regex.test(key)) { alert("something"); //if(e.preventDefault) e.preventDefault(); //if(e.returnValue) e.returnValue = false; //return false; } else { //return true; alert("something else"); } } if(keytest.addEventListener) keytest.addEventListener("keypress",numericinput,false); else { keytest.onkeypress = numericinput(); } } })();

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• Can I use Cassandra to store objects?

  - by Sandeep

  Hi, My application works like this. A database(Mysql) where there is a command. The command is an object(consists of fields many fields like ints ans strings). There is a webservice which interact with the database and get the command from the db and performs some operation. The way how I am storing the command into db is by stripping all the fields and inserting them in to the db. Can I use cassandra in place of mysql and store the command object?

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• How do I programmatically add a widget to a container created from GtkBuilder?

  - by Warner Young

  I've created a window that has some containers and widgets in it, and I want to add a new widget dynamically at run-time to one of the Vboxes in this window. So I have this code, which brings up the window: gtk_builder_add_from_file( g_builder, "window.xml", NULL ); mainwindow = GTK_WIDGET( gtk_builder_get_object( g_builder, "window" )); gtk_widget_show( mainwindow ); Then I create a new label, for example, and add it to one of the existing Vboxes, called "vbox_mid", like this: label = gtk_label_new( "Test label" ); vbox = GTK_WIDGET( gtk_builder_get_object( g_builder, "vbox_mid" )); gtk_box_pack_end( GTK_BOX( vbox ), label, TRUE, TRUE, 0 ); But this doesn't seem to work. I don't see a new label in the vbox. I have a feeling I'm missing something here, but I can't see what it is. I thought perhaps there was a special GtkBuilder call to add a widget dynamically, but I don't see anything that looks like that. I would really appreciate any help on this.

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• Aptana Studio is opening but not ever closing a python.exe process

  - by SC Ghost

  I am developing a small testing website using Django 1.2 in Aptana Studio build 2.0.4.1268158907. I have a Django project that I test by running the command "runserver 8001" on my project. This command runs the project on a small server that comes with Django. However the problem arises that every time I run this command Aptana opens two instances of the process "python.exe". Upon terminating the command only one of these instances is ended. The other process continues to run and use memory. My server is not online, and the process doesn't seem to do anything that I can find. This happens every time i run the runserver command on my project and therefore more and more python.exe instances will open up through my development period. Any help discovering either the purpose of this extra python.exe or a way to prevent it from opening would be much appreciated.

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• Executing ffmpeg from php running in apache

  - by foobar

  I was executing ffmpeg from php running inside apache. I used to get the error " error while loading shared libraries: libavdevice.so.52: cannot open shared object file: No such file or directory". It used to work perfectly if the php script was executed from the command prompt or ffpmeg was directly invoked from the command prompt. I followed the below steps to fix the apache error: Step 1: Check if the file “libavdevice.so.52? exists in the server using the following command. find / -name ‘libavdevice.so.*’ Step 2: You will get the directory in which the file “libavdevice.so.52? exists from the above command. Suppose the directory is “/usr/local/lib/” in this example. Step 3: You have to add the directory name in the file “/etc/ld.so.conf”. Step 4: Execute the command “ldconfig”. How did doing the above make a difference to apache?

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• SetWindowLongPtr with DialogBoxParam?

  - by templatetypedef

  Hey all- A while back I was writing a C++ program with the Win32 API that would display a dialog box and then listen to the messages it generated. At one point, I was interested in associating a piece of data with the dialog window. Were I manually creating the window and attaching a window proc, I'd just use SetWindowLongPtr to set the GWLP_USERDATA field to a pointer to the data to associate. However, in this case I was creating and displaying the window with DialogBoxParam, and it wasn't clear whether this function was associating that data with its own internal state. Since the MSDN didn't have a description of what would happen in this case, I ended up using some other approach to solve the problem. My question is this - is it safe to use SetWindowLongPtr to overwrite the GWLP_USERDATA value in a window created by DialogBoxParam? Thanks!

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• fwrite() not writing. Error with my code, or the remote client?

  - by Rob

  Trying to set up a script to send commands to a remote client on a Win32 system. Here is the code: $command = $_POST['command']; $host = $_POST['host']; $port = $_POST['port']; $fp = @fsockopen($host, $port, $e, $s, 15); if (!$fp) { echo 'Error! Here\'s your problem: ' . $e . ': ' . $s; }else{ $fw = fwrite($fp, $command); if (!$fw){ echo 'Failed sending command.'; fclose($fp); }else{ fclose($fp); echo 'Successfully sent: ' . $command; } } My buddy is working on the remote client, and he says that this script is sending '' However, my script is echoing Successfully sent: test Am I doing something wrong, or is it a problem on his end?

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• Java swing center JDialog over parent

  - by Chris Drappier

  I have a Java swing application with a button that produces a popup window when a certain action is performed. I'd like to align the center point of the popup window with the center point of the parent window when it is rendered. How can I calculate the x,y coordinates to plug into setLocation() for the popup window? EDIT: just to clarify. I do not want the behavior of setLocationRelativeTo() because that sets the top-left pixel of the popup over the center pixel of the parent frame. I want to set the center pixel of the popup over the center pixel of the parent frame. Also, I'm not interested in whether or not a popup window is good practice. I'm past that now. thanks

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• How to get the number of files in a folder as a variable?

  - by Jason

  Using bash, how can one get the number of files in a folder, excluding directories from a shell script without the interpreter complaining? With the help of a friend, I've tried $files=$(find ../ -maxdepth 1 -type f | sort -n) $num=$("ls -l" | "grep ^-" | "wc -l") which returns from the command line: ../1-prefix_blended_fused.jpg: No such file or directory ls -l : command not found grep ^-: command not found wc -l: command not found respectively. These commands work on the command line, but NOT with a bash script. Given a file filled with image files formatted like 1-pano.jpg, I want to grab all the images in the directory to get the largest numbered file to tack onto the next image being processed. Why the discrepancy?

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• Check if class has been instantiated

  - by Holman716

  In my current program I have a main window and a secondary window that pops up when a button is pressed. If the secondary window is currently shown but doesn't have focus the button will instead bring it to focus. At this time I am creating a new instance of the secondary window as the main window loads and simply checking its status with SubWindow.IsDisposed and SubWindow.CanFocus I have found that if I do not create a new instance at the beginning SubWindow.IsDisposed throws an exception. As long as I'd previously created an instance of SubWindow the check runs fine. My question- The current version works fine but is there a better way of doing this? It is not a huge concern, but it feels like it'd be better to be able to check for existence without having to guarantee that it has existed at least once before.

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• ant ftp doesn't download files in subdirectories

  - by Kristof Neirynck

  Hello, I'm trying to download files in subdirectories from an ftp server with ant. The exact set of files is known. Some of them are in subdirectories. Ant only seems to download the ones in the root directory. It does work if I download all files without listing them. The first ftp action should do the exact same thing as the second. Instead it complains about "Hidden files" and seems to prefix the paths with "\\". Does anyone know what's wrong here? Is this a bug in commons-net? build.xml <?xml version="1.0" encoding="utf-8"?> <project name="example" default="example" basedir="."> <taskdef name="ftp" classname="org.apache.tools.ant.taskdefs.optional.net.FTP" /> <target name="example"> <!-- 2 files retrieved --> <ftp action="get" verbose="true" server="localhost" userid="example" password="example"> <fileset dir="downloads" casesensitive="false" includes="root1.txt,root2.txt,a/a.txt,a/b/ab.txt,c/c.txt" /> </ftp> <!-- 5 files retrieved --> <ftp action="get" verbose="true" server="localhost" userid="example" password="example"> <fileset dir="downloads" casesensitive="false" includes="**/*" /> </ftp> </target> </project> run_ant.bat @ECHO OFF PUSHD %~dp0 SET CLASSPATH= SET ANT_HOME=C:\apache-ant-1.8.0 SET ant=%ANT_HOME%\bin\ant.bat SET antoptions=-nouserlib -noclasspath -d SET ftpjars=^ -lib lib\jakarta-oro-2.0.8.jar ^ -lib lib\commons-net-2.0.jar CALL %ant% %antoptions% %ftpjars% > output.txt POPD output.txt Unable to locate tools.jar. Expected to find it in C:\PROGRA~1\Java\jre6\lib\tools.jar Apache Ant version 1.8.0 compiled on February 1 2010 Trying the default build file: build.xml Buildfile: G:\ftp\build.xml Adding reference: ant.PropertyHelper Detected Java version: 1.6 in: C:\PROGRA~1\Java\jre6 Detected OS: Windows 7 Adding reference: ant.ComponentHelper Setting ro project property: ant.file -> G:\ftp\build.xml Setting ro project property: ant.file.type -> file Adding reference: ant.projectHelper Adding reference: ant.parsing.context Adding reference: ant.targets parsing buildfile G:\ftp\build.xml with URI = file:/G:/ftp/build.xml Setting ro project property: ant.project.name -> example Adding reference: example Setting ro project property: ant.project.default-target -> example Setting ro project property: ant.file.example -> G:\ftp\build.xml Setting ro project property: ant.file.type.example -> file Project base dir set to: G:\ftp +Target: +Target: example Adding reference: ant.LocalProperties parsing buildfile jar:file:/C:/apache-ant-1.8.0/lib/ant.jar!/org/apache/tools/ant/antlib.xml with URI = jar:file:/C:/apache-ant-1.8.0/lib/ant.jar!/org/apache/tools/ant/antlib.xml from a zip file Class org.apache.tools.ant.taskdefs.optional.net.FTP loaded from parent loader (parentFirst) Setting ro project property: ant.project.invoked-targets -> example Attempting to create object of type org.apache.tools.ant.helper.DefaultExecutor Adding reference: ant.executor Build sequence for target(s) `example' is [example] Complete build sequence is [example, ] example: [ftp] Opening FTP connection to localhost [ftp] connected [ftp] logging in to FTP server [ftp] login succeeded [ftp] getting files fileset: Setup scanner in dir G:\ftp\downloads with patternSet{ includes: [root1.txt, root2.txt, a/a.txt, a/b/ab.txt] excludes: [] } will try to cd to A where a directory called a exists testing case sensitivity, attempting to cd to A remote system is case sensitive : false [ftp] Hidden file \\a\b\ assumed to not be a symlink. filelist map used in listing files filelist map used in listing files [ftp] Hidden file \\a\b\ assumed to not be a symlink. filelist map used in listing files filelist map used in listing files filelist map used in listing files filelist map used in listing files filelist map used in listing files [ftp] Hidden file \\a\a.txt assumed to not be a symlink. filelist map used in listing files [ftp] Hidden file \\a\a.txt assumed to not be a symlink. filelist map used in listing files filelist map used in listing files filelist map used in listing files [ftp] transferring root1.txt to G:\ftp\downloads\root1.txt [ftp] File G:\ftp\downloads\root1.txt copied from localhost [ftp] transferring root2.txt to G:\ftp\downloads\root2.txt [ftp] File G:\ftp\downloads\root2.txt copied from localhost [ftp] 2 files retrieved [ftp] disconnecting [ftp] Opening FTP connection to localhost [ftp] connected [ftp] logging in to FTP server [ftp] login succeeded [ftp] getting files fileset: Setup scanner in dir G:\ftp\downloads with patternSet{ includes: [**/*] excludes: [] } will try to cd to A where a directory called a exists testing case sensitivity, attempting to cd to A remote system is case sensitive : false [ftp] transferring a\a.txt to G:\ftp\downloads\a\a.txt [ftp] File G:\ftp\downloads\a\a.txt copied from localhost [ftp] transferring a\b\ab.txt to G:\ftp\downloads\a\b\ab.txt [ftp] File G:\ftp\downloads\a\b\ab.txt copied from localhost [ftp] transferring c\c.txt to G:\ftp\downloads\c\c.txt [ftp] File G:\ftp\downloads\c\c.txt copied from localhost [ftp] transferring root1.txt to G:\ftp\downloads\root1.txt [ftp] File G:\ftp\downloads\root1.txt copied from localhost [ftp] transferring root2.txt to G:\ftp\downloads\root2.txt [ftp] File G:\ftp\downloads\root2.txt copied from localhost [ftp] 5 files retrieved [ftp] disconnecting BUILD SUCCESSFUL Total time: 0 seconds server log (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> Connected, sending welcome message... (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-FileZilla Server version 0.9.34 beta (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-written by Tim Kosse ([email protected]) (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220 Please visit http://sourceforge.net/projects/filezilla/ (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> USER example (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 331 Password required for example (000153) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> PASS ******* (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 230 Logged on (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> TYPE I (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Type set to I (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> SYST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 215 UNIX emulated by FileZilla (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,232 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD A (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/A" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD a (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD b (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //a/b (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,233 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,234 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //\\a\b\ (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //\\a\b\ (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a/b" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD a (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD //a (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/a" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,235 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,236 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> RETR root1.txt (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,237 (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> RETR root2.txt (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> QUIT (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> 221 Goodbye (000153) 7/05/2010 19:46:12 - example (127.0.0.1)> disconnected. (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> Connected, sending welcome message... (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-FileZilla Server version 0.9.34 beta (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220-written by Tim Kosse ([email protected]) (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 220 Please visit http://sourceforge.net/projects/filezilla/ (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> USER example (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> 331 Password required for example (000154) 7/05/2010 19:46:12 - (not logged in) (127.0.0.1)> PASS ******* (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 230 Logged on (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> TYPE I (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Type set to I (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> SYST (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 215 UNIX emulated by FileZilla (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,239 (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD A (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/A" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PWD (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 257 "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> PORT 127,0,0,1,207,240 (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:12 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD a (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,241 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD //a/ (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/a" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD b (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/a/b" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,242 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/a" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD c (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/c" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,243 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> LIST (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for directory list. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CDUP (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 CDUP successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> CWD / (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 250 CWD successful. "/" is current directory. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,244 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR a/a.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,245 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR a/b/ab.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,246 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR c/c.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,247 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR root1.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> PORT 127,0,0,1,207,248 (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 200 Port command successful (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> RETR root2.txt (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 150 Opening data channel for file transfer. (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 226 Transfer OK (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> QUIT (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> 221 Goodbye (000154) 7/05/2010 19:46:13 - example (127.0.0.1)> disconnected.

  Read the article

• MySQL Syslog Audit Plugin

  - by jonathonc

  This post shows the construction process of the Syslog Audit plugin that was presented at MySQL Connect 2012. It is based on an environment that has the appropriate development tools enabled including gcc,g++ and cmake. It also assumes you have downloaded the MySQL source code (5.5.16 or higher) and have compiled and installed the system into the /usr/local/mysql directory ready for use.  The information provided below is designed to show the different components that make up a plugin, and specifically an audit type plugin, and how it comes together to be used within the MySQL service. The MySQL Reference Manual contains information regarding the plugin API and how it can be used, so please refer there for more detailed information. The code in this post is designed to give the simplest information necessary, so handling every return code, managing race conditions etc is not part of this example code. Let's start by looking at the most basic implementation of our plugin code as seen below: /*    Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.    Author:  Jonathon Coombes    Licence: GPL    Description: An auditing plugin that logs to syslog and                 can adjust the loglevel via the system variables. */ #include <stdio.h> #include <string.h> #include <mysql/plugin_audit.h> #include <syslog.h> There is a commented header detailing copyright/licencing and meta-data information and then the include headers. The two important include statements for our plugin are the syslog.h plugin, which gives us the structures for syslog, and the plugin_audit.h include which has details regarding the audit specific plugin api. Note that we do not need to include the general plugin header plugin.h, as this is done within the plugin_audit.h file already. To implement our plugin within the current implementation we need to add it into our source code and compile. > cd /usr/local/src/mysql-5.5.28/plugin > mkdir audit_syslog > cd audit_syslog A simple CMakeLists.txt file is created to manage the plugin compilation: MYSQL_ADD_PLUGIN(audit_syslog audit_syslog.cc MODULE_ONLY) Run the cmake  command at the top level of the source and then you can compile the plugin using the 'make' command. This results in a compiled audit_syslog.so library, but currently it is not much use to MySQL as there is no level of api defined to communicate with the MySQL service. Now we need to define the general plugin structure that enables MySQL to recognise the library as a plugin and be able to install/uninstall it and have it show up in the system. The structure is defined in the plugin.h file in the MySQL source code.  /*   Plugin library descriptor */ mysql_declare_plugin(audit_syslog) {   MYSQL_AUDIT_PLUGIN,           /* plugin type                    */   &audit_syslog_descriptor,     /* descriptor handle               */   "audit_syslog",               /* plugin name                     */   "Author Name",                /* author                          */   "Simple Syslog Audit",        /* description                     */   PLUGIN_LICENSE_GPL,           /* licence                         */   audit_syslog_init,            /* init function     */   audit_syslog_deinit,          /* deinit function */   0x0001,                       /* plugin version                  */   NULL,                         /* status variables        */   NULL,                         /* system variables                */   NULL,                         /* no reserves                     */   0,                            /* no flags                        */ } mysql_declare_plugin_end; The general plugin descriptor above is standard for all plugin types in MySQL. The plugin type is defined along with the init/deinit functions and interface methods into the system for sharing information, and various other metadata information. The descriptors have an internally recognised version number so that plugins can be matched against the api on the running server. The other details are usually related to the type-specific methods and structures to implement the plugin. Each plugin has a type-specific descriptor as well which details how the plugin is implemented for the specific purpose of that plugin type. /*   Plugin type-specific descriptor */ static struct st_mysql_audit audit_syslog_descriptor= {   MYSQL_AUDIT_INTERFACE_VERSION,                        /* interface version    */   NULL,                                                 /* release_thd function */   audit_syslog_notify,                                  /* notify function      */   { (unsigned long) MYSQL_AUDIT_GENERAL_CLASSMASK |                     MYSQL_AUDIT_CONNECTION_CLASSMASK }  /* class mask           */ }; In this particular case, the release_thd function has not been defined as it is not required. The important method for auditing is the notify function which is activated when an event occurs on the system. The notify function is designed to activate on an event and the implementation will determine how it is handled. For the audit_syslog plugin, the use of the syslog feature sends all events to the syslog for recording. The class mask allows us to determine what type of events are being seen by the notify function. There are currently two major types of event: 1. General Events: This includes general logging, errors, status and result type events. This is the main one for tracking the queries and operations on the database. 2. Connection Events: This group is based around user logins. It monitors connections and disconnections, but also if somebody changes user while connected. With most audit plugins, the principle behind the plugin is to track changes to the system over time and counters can be an important part of this process. The next step is to define and initialise the counters that are used to track the events in the service. There are 3 counters defined in total for our plugin - the # of general events, the # of connection events and the total number of events.  static volatile int total_number_of_calls; /* Count MYSQL_AUDIT_GENERAL_CLASS event instances */ static volatile int number_of_calls_general; /* Count MYSQL_AUDIT_CONNECTION_CLASS event instances */ static volatile int number_of_calls_connection; The init and deinit functions for the plugin are there to be called when the plugin is activated and when it is terminated. These offer the best option to initialise the counters for our plugin: /*  Initialize the plugin at server start or plugin installation. */ static int audit_syslog_init(void *arg __attribute__((unused))) {     openlog("mysql_audit:",LOG_PID|LOG_PERROR|LOG_CONS,LOG_USER);     total_number_of_calls= 0;     number_of_calls_general= 0;     number_of_calls_connection= 0;     return(0); } The init function does a call to openlog to initialise the syslog functionality. The parameters are the service to log under ("mysql_audit" in this case), the syslog flags and the facility for the logging. Then each of the counters are initialised to zero and a success is returned. If the init function is not defined, it will return success by default. /*  Terminate the plugin at server shutdown or plugin deinstallation. */ static int audit_syslog_deinit(void *arg __attribute__((unused))) {     closelog();     return(0); } The deinit function will simply close our syslog connection and return success. Note that the syslog functionality is part of the glibc libraries and does not require any external factors.  The function names are what we define in the general plugin structure, so these have to match otherwise there will be errors. The next step is to implement the event notifier function that was defined in the type specific descriptor (audit_syslog_descriptor) which is audit_syslog_notify. /* Event notifier function */ static void audit_syslog_notify(MYSQL_THD thd __attribute__((unused)), unsigned int event_class, const void *event) { total_number_of_calls++; if (event_class == MYSQL_AUDIT_GENERAL_CLASS) { const struct mysql_event_general *event_general= (const struct mysql_event_general *) event; number_of_calls_general++; syslog(audit_loglevel,"%lu: User: %s Command: %s Query: %s\n", event_general->general_thread_id, event_general->general_user, event_general->general_command, event_general->general_query ); } else if (event_class == MYSQL_AUDIT_CONNECTION_CLASS) { const struct mysql_event_connection *event_connection= (const struct mysql_event_connection *) event; number_of_calls_connection++; syslog(audit_loglevel,"%lu: User: %s@%s[%s] Event: %d Status: %d\n", event_connection->thread_id, event_connection->user, event_connection->host, event_connection->ip, event_connection->event_subclass, event_connection->status ); } }   In the case of an event, the notifier function is called. The first step is to increment the total number of events that have occurred in our database.The event argument is then cast into the appropriate event structure depending on the class type, of general event or connection event. The event type counters are incremented and details are sent via the syslog() function out to the system log. There are going to be different line formats and information returned since the general events have different data compared to the connection events, even though some of the details overlap, for example, user, thread id, host etc. On compiling the code now, there should be no errors and the resulting audit_syslog.so can be loaded into the server and ready to use. Log into the server and type: mysql> INSTALL PLUGIN audit_syslog SONAME 'audit_syslog.so'; This will install the plugin and will start updating the syslog immediately. Note that the audit plugin attaches to the immediate thread and cannot be uninstalled while that thread is active. This means that you cannot run the UNISTALL command until you log into a different connection (thread) on the server. Once the plugin is loaded, the system log will show output such as the following: Oct  8 15:33:21 machine mysql_audit:[8337]: 87: User: root[root] @ localhost []  Command: (null)  Query: INSTALL PLUGIN audit_syslog SONAME 'audit_syslog.so' Oct  8 15:33:21 machine mysql_audit:[8337]: 87: User: root[root] @ localhost []  Command: Query  Query: INSTALL PLUGIN audit_syslog SONAME 'audit_syslog.so' Oct  8 15:33:40 machine mysql_audit:[8337]: 87: User: root[root] @ localhost []  Command: (null)  Query: show tables Oct  8 15:33:40 machine mysql_audit:[8337]: 87: User: root[root] @ localhost []  Command: Query  Query: show tables Oct  8 15:33:43 machine mysql_audit:[8337]: 87: User: root[root] @ localhost []  Command: (null)  Query: select * from t1 Oct  8 15:33:43 machine mysql_audit:[8337]: 87: User: root[root] @ localhost []  Command: Query  Query: select * from t1 It appears that two of each event is being shown, but in actuality, these are two separate event types - the result event and the status event. This could be refined further by changing the audit_syslog_notify function to handle the different event sub-types in a different manner.  So far, it seems that the logging is working with events showing up in the syslog output. The issue now is that the counters created earlier to track the number of events by type are not accessible when the plugin is being run. Instead there needs to be a way to expose the plugin specific information to the service and vice versa. This could be done via the information_schema plugin api, but for something as simple as counters, the obvious choice is the system status variables. This is done using the standard structure and the declaration: /*  Plugin status variables for SHOW STATUS */ static struct st_mysql_show_var audit_syslog_status[]= {   { "Audit_syslog_total_calls",     (char *) &total_number_of_calls,     SHOW_INT },   { "Audit_syslog_general_events",     (char *) &number_of_calls_general,     SHOW_INT },   { "Audit_syslog_connection_events",     (char *) &number_of_calls_connection,     SHOW_INT },   { 0, 0, SHOW_INT } };   The structure is simply the name that will be displaying in the mysql service, the address of the associated variables, and the data type being used for the counter. It is finished with a blank structure to show that there are no more variables. Remember that status variables may have the same name for variables from other plugin, so it is considered appropriate to add the plugin name at the start of the status variable name to avoid confusion. Looking at the status variables in the mysql client shows something like the following: mysql> show global status like "audit%"; +--------------------------------+-------+ | Variable_name                  | Value | +--------------------------------+-------+ | Audit_syslog_connection_events | 1     | | Audit_syslog_general_events    | 2     | | Audit_syslog_total_calls       | 3     | +--------------------------------+-------+ 3 rows in set (0.00 sec) The final connectivity piece for the plugin is to allow the interactive change of the logging level between the plugin and the system. This requires the ability to send changes via the mysql service through to the plugin. This is done using the system variables interface and defining a single variable to keep track of the active logging level for the facility. /* Plugin system variables for SHOW VARIABLES */ static MYSQL_SYSVAR_STR(loglevel, audit_loglevel,                         PLUGIN_VAR_RQCMDARG,                         "User can specify the log level for auditing",                         audit_loglevel_check, audit_loglevel_update, "LOG_NOTICE"); static struct st_mysql_sys_var* audit_syslog_sysvars[] = {     MYSQL_SYSVAR(loglevel),     NULL }; So now the system variable 'loglevel' is defined for the plugin and associated to the global variable 'audit_loglevel'. The check or validation function is defined to make sure that no garbage values are attempted in the update of the variable. The update function is used to save the new value to the variable. Note that the audit_syslog_sysvars structure is defined in the general plugin descriptor to associate the link between the plugin and the system and how much they interact. Next comes the implementation of the validation function and the update function for the system variable. It is worth noting that if you have a simple numeric such as integers for the variable types, the validate function is often not required as MySQL will handle the automatic check and validation of simple types. /* longest valid value */ #define MAX_LOGLEVEL_SIZE 100 /* hold the valid values */ static const char *possible_modes[]= { "LOG_ERROR", "LOG_WARNING", "LOG_NOTICE", NULL };  static int audit_loglevel_check(     THD*                        thd,    /*!< in: thread handle */     struct st_mysql_sys_var*    var,    /*!< in: pointer to system                                         variable */     void*                       save,   /*!< out: immediate result                                         for update function */     struct st_mysql_value*      value)  /*!< in: incoming string */ {     char buff[MAX_LOGLEVEL_SIZE];     const char *str;     const char **found;     int length;     length= sizeof(buff);     if (!(str= value->val_str(value, buff, &length)))         return 1;     /*         We need to return a pointer to a locally allocated value in "save".         Here we pick to search for the supplied value in an global array of         constant strings and return a pointer to one of them.         The other possiblity is to use the thd_alloc() function to allocate         a thread local buffer instead of the global constants.     */     for (found= possible_modes; *found; found++)     {         if (!strcmp(*found, str))         {             *(const char**)save= *found;             return 0;         }     }     return 1; } The validation function is simply to take the value being passed in via the SET GLOBAL VARIABLE command and check if it is one of the pre-defined values allowed  in our possible_values array. If it is found to be valid, then the value is assigned to the save variable ready for passing through to the update function. static void audit_loglevel_update(     THD*                        thd,        /*!< in: thread handle */     struct st_mysql_sys_var*    var,        /*!< in: system variable                                             being altered */     void*                       var_ptr,    /*!< out: pointer to                                             dynamic variable */     const void*                 save)       /*!< in: pointer to                                             temporary storage */ {     /* assign the new value so that the server can read it */     *(char **) var_ptr= *(char **) save;     /* assign the new value to the internal variable */     audit_loglevel= *(char **) save; } Since all the validation has been done already, the update function is quite simple for this plugin. The first part is to update the system variable pointer so that the server can read the value. The second part is to update our own global plugin variable for tracking the value. Notice that the save variable is passed in as a void type to allow handling of various data types, so it must be cast to the appropriate data type when assigning it to the variables. Looking at how the latest changes affect the usage of the plugin and the interaction within the server shows: mysql> show global variables like "audit%"; +-----------------------+------------+ | Variable_name         | Value      | +-----------------------+------------+ | audit_syslog_loglevel | LOG_NOTICE | +-----------------------+------------+ 1 row in set (0.00 sec) mysql> set global audit_syslog_loglevel="LOG_ERROR"; Query OK, 0 rows affected (0.00 sec) mysql> show global status like "audit%"; +--------------------------------+-------+ | Variable_name                  | Value | +--------------------------------+-------+ | Audit_syslog_connection_events | 1     | | Audit_syslog_general_events    | 11    | | Audit_syslog_total_calls       | 12    | +--------------------------------+-------+ 3 rows in set (0.00 sec) mysql> show global variables like "audit%"; +-----------------------+-----------+ | Variable_name         | Value     | +-----------------------+-----------+ | audit_syslog_loglevel | LOG_ERROR | +-----------------------+-----------+ 1 row in set (0.00 sec)   So now we have a plugin that will audit the events on the system and log the details to the system log. It allows for interaction to see the number of different events within the server details and provides a mechanism to change the logging level interactively via the standard system methods of the SET command. A more complex auditing plugin may have more detailed code, but each of the above areas is what will be involved and simply expanded on to add more functionality. With the above skeleton code, it is now possible to create your own audit plugins to implement your own auditing requirements. If, however, you are not of the coding persuasion, then you could always consider the option of the MySQL Enterprise Audit plugin that is available to purchase.

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• How to install chrome autosave extension?

  - by Oguz Can Sertel

  I would like to install chrome autosave plugin on ubuntu. when I try to install it with these steps https://github.com/NV/chrome-devtools-autosave-server , I got some errors... there was not installed node and npm out of box on ubuntu 12.10. So I installed npm and node with these commands. sudo apt-get install npm sudo apt-get install node and I tried to install autosave here is the output: sudo npm install -g autosave npm http GET https://registry.npmjs.org/autosave npm http 304 https://registry.npmjs.org/autosave npm http GET https://registry.npmjs.org/commander npm http 304 https://registry.npmjs.org/commander /usr/local/bin/autosave -> /usr/local/lib/node_modules/autosave/bin/autosave > [email protected] install /usr/local/lib/node_modules/autosave > node ./scripts/install.js npm ERR! error installing [email protected] npm WARN This failure might be due to the use of legacy binary "node" npm WARN For further explanations, please read npm WARN /usr/share/doc/nodejs/README.Debian npm WARN npm ERR! [email protected] install: `node ./scripts/install.js` npm ERR! `sh "-c" "node ./scripts/install.js"` failed with 1 npm ERR! npm ERR! Failed at the [email protected] install script. npm ERR! This is most likely a problem with the autosave package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! node ./scripts/install.js npm ERR! You can get their info via: npm ERR! npm owner ls autosave npm ERR! There is likely additional logging output above. npm ERR! npm ERR! System Linux 3.5.0-17-generic npm ERR! command "/usr/bin/nodejs" "/usr/bin/npm" "install" "-g" "autosave" npm ERR! cwd /home/naczu npm ERR! node -v v0.6.19 npm ERR! npm -v 1.1.4 npm ERR! code ELIFECYCLE npm ERR! message [email protected] install: `node ./scripts/install.js` npm ERR! message `sh "-c" "node ./scripts/install.js"` failed with 1 npm ERR! errno {} npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /home/naczu/npm-debug.log npm not ok and here is README.debian nodejs for Debian ================= packaged modules ---------------- The global search path for modules is /usr/lib/nodejs Future packages of node modules will use that directory, so it should be used wisely. user modules ------------ Node looks for modules in ./node_modules directory first; please read node#modules documentation carefully for more information. Node does not look for modules in /usr/local/lib/node_modules, where npm put them. Please read npm-link(1) of npm package, to understand how to properly use npm-installed modules in a project. Note that require.paths is not supported in future node versions. See also node(1) for more information about NODE_PATH. nodejs command -------------- The upstream name for the Node.js interpreter command is "node". In Debian the interpreter command has been changed to "nodejs". This was done to prevent a namespace collision: other commands use the same name in their upstreams, such as ax25-node from the "node" package. Scripts calling Node.js as a shell command must be changed to instead use the "nodejs" command.

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• Dual monitor not working completely in 12.10 after upgrade

  - by Mark Baldridge

  At 12.04, dual monitors worked perfectly. After upgrading to 12.10, the primary monitor works, the second monitor only partly works. I am sure there is some difference between the releases that I have missed setting properly. System settings - Displays show both correctly as Acer 22" monitors at 1680x1050 (16:10). An icon on monitor 2 is present, but elongated; almost an artifact, since other icons on the primary screen are absent, but this one icon is there on th second monitor. Selecting the icons on both screens exist. Painting is weird on monitor 2. Launcher exists and works on both screens, but even with sticky edges off, the cursor stops at the left edge of monitor 2. Clicking on text editor on screen 2 launcer will launch gedit there. If I drag it, it leaves a trail of after images like repaint is failing. If I drive the cursor on the launcher, the help tags like "LibreOffice Writer" appear, but stay on screen unless I drag the active gedit window over them. Then part of the help bubbles are overwritten, leaving behind after images of the gedit window on screen. What is really fascinating is that the System settings - Displays is now ignoring monitor selection, after allowing it earlier. Just before this, the help popup which said "Select a monitor to change its properties; drag to rearrange its placement" actually let me do that. Maybe a trick of where I grab the edge of the monitor in the Displays setting. I just found a working handle. When I drag monitor 1 to the right of monitor 2, "Apply" and confirm, both monitors work normally (although the right monitor lets the cursor slide off the right edge onto the left edge of monitor 1 - which sounds correct). Painting of windows does not leave an after image. However, success is only temporary. The setting survives the reboot, but painting on the left monitor, now monitor 2, now replicates the issues from before. The after image of the gedit window and the small window for "Are you sure you want to close all programs and restart the computer?" are still on monitor 2 (on the left now), even though they are not real windows, nor do they have processes behind them. Curiously, in Displays, the "green" monitor on the left in the display window is matched by the right monitor color in the monitor upper left corner. Probably makes sense as the one on the right is now monitor 1. If I repeat the "drag the left monitor to the right of the right monitor on the "Displays" window, things are oriented properly, with no display artifacts as I drag windows around either screen. Also the description bubbles that pop up are overwritten on both screens, so none of those artifacts either. This goodness does not survive a reboot, however. Have not tried logging out and back in. All of this after positing that the motherboard VGA and HDMI ports could have been the issue. So, I installed an e-GeForce 7600 GT Dual DVI (I know the web thinks it is not DVI, but VGA, but the connectors are DVI). No change to the weird behavior. The good parts continue to work, the weirdness also works, and swapping monitor positions seems to cure the issue. So, is there a setting I have missed? Given "swapping" monitor 1 and 2 on the System Settings... - Displays makes it work, just not across boot, I suspect so.

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• Selenium &ndash; Use Data Driven tests to run in multiple browsers and sizes

  - by Aligned

  Originally posted on: http://geekswithblogs.net/Aligned/archive/2013/11/04/selenium-ndash-use-data-driven-tests-to-run-in-multiple.aspxSelenium uses WebDriver (or is it the same? I’m still learning how it is connected) to run Automated UI tests in many different browsers. For example, you can run the same test in Chrome and Firefox and in a smaller sized Chrome browser. The permutations can grow quickly. One way to get them to run in MStest is to create  a test method for each test (ie ChromeDeleteItem_Small, ChromeDeleteItem_Large, FFDeleteItem_Small, FFDeleteItem_Large) that each call  the same base method, passing in the browser and size you’d like. This approach was causing a lot of duplicate code, so I decided to use the data driven approach, common to Coded UI or Unit test methods. 1. Create a class with a test method. 2. Create a csv with two columns: BrowserType, BrowserSize 3. Add rows for each permutation: Chrome, Large | Chrome, Small | Firefox, Large | Firefox, Small | IE, Large | IE, Small | *** 4. Add the csv to the Visual Studio Project. 5. Set the Copy to output directory to Copy always 6. Add the attribute: [DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV", "|DataDirectory|\\TestMatrix.csv", "TestMatrix#csv", DataAccessMethod.Sequential), DeploymentItem("TestMatrix.csv")] 7. Run the test in the test explorer Example:[CodedUITest] public class AllTasksTests : TasksTestBase { [TestMethod] [TestCategory("Tasks")] [DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV", "|DataDirectory|\\TestMatrix.csv", "TestMatrix#csv", DataAccessMethod.Sequential), DeploymentItem("TestMatrix.csv")] public void CreateTask() { this.PrepForDataDrivenTest(); base.CreateTaskTest("New Task"); } } protected void PrepForDataDrivenTest() { var browserType = this.ParseBrowserType(Context.DataRow["BrowserType"].ToString()); var browserSize = this.ParseBrowserSize(Context.DataRow["BrowserSize"].ToString()); this.BrowserType = browserType; this.BrowserSize = browserSize; Trace.WriteLine("browser: " + browserType.ToString()); Trace.WriteLine("browser size: " + browserSize.ToString()); } /// <summary> /// Get the enum value from the string /// </summary> /// <param name="browserType">Chrome, Firefox, or IE</param> /// <returns>The browser type.</returns> private BrowserType ParseBrowserType(string browserType) { return (UITestFramework.BrowserType)Enum.Parse(typeof(UITestFramework.BrowserType), browserType, true); } /// <summary> /// Get the browser size enum value from the string /// </summary> /// <param name="browserSize">Small, Medium, Large</param> /// <returns>the browser size</returns> private BrowserSizeEnum ParseBrowserSize(string browserSize) { return (BrowserSizeEnum)Enum.Parse(typeof(BrowserSizeEnum), browserSize, true); }/// <summary> /// Change the browser to the size based on the enum. /// </summary> /// <param name="browserSize">The BrowserSizeEnum value to resize the window to.</param> private void ResizeBrowser(BrowserSizeEnum browserSize) { switch (browserSize) { case BrowserSizeEnum.Large: this.driver.Manage().Window.Maximize(); break; case BrowserSizeEnum.Medium: this.driver.Manage().Window.Size = new Size(800, this.driver.Manage().Window.Size.Height); break; case BrowserSizeEnum.Small: this.driver.Manage().Window.Size = new Size(500, this.driver.Manage().Window.Size.Height); break; default: break; } }/// <summary> /// Browser sizes for automation testing /// </summary> public enum BrowserSizeEnum { /// <summary> /// Large size, Maximized to the desktop /// </summary> Large, /// <summary> /// Similar to tablets /// </summary> Medium, /// <summary> /// Phone sizes... 610px and smaller /// </summary> Small } Hope it helps!

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• Run custom javascript when page loads

  - by Husain Dalal

  Ran into a neat way to load and run custom javascript when an ADF page loads:         <af:resource type="javascript">         function onLoad() {       alert("I am running ! ");           }           //Script block           if (window.addEventListener) {             window.addEventListener("load", onLoad, false)           } else if (window.attachEvent) {              window.detachEvent("onload", onLoad)              window.attachEvent("onload", onLoad)           } else {             window.onload=onLoad           }         </af:resource>  Reference: http://docs.oracle.com/cd/E23943_01/webcenter.1111/e10148/jpsdg_pagelet.htm#BABGHCBF 

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• WPF ICommand over a button

  - by toni

  Hi, I have implemented a custom IComand class for one of my buttons. The button is placed in a page 'MyPage.xaml' but its custom ICommand class is placed in another class, not in the MyPage code behind. Then from XAML I want to bind the button with its custom command class and then I do: MyPage.xaml: <Page ...> <Page.CommandBindings> <CommandBinding Command="RemoveAllCommand" CanExecute="CanExecute" Executed="Execute" /> </Page.CommandBindings> <Page.InputBindings> <MouseBinding Command="RemoveAllCommand" MouseAction="LeftClick" /> </Page.InputBindings> <...> <Button x:Name="MyButton" Command="RemoveAllCommand" .../> <...> </Page> and the custom command button class: // Here I derive from MyPage class because I want to access some objects from // Execute method public class RemoveAllCommand : MyPage, ICommand { public void Execute(Object parameter) { <...> } public bool CanExecute(Object parameter) { <...> } public event EventHandler CanExecuteChanged { add { CommandManager.RequerySuggested += value; } remove { CommandManager.RequerySuggested -= value; } } } My problem is how to say MyPage.xaml that Execute and CanExecute methods for the button is in another class and not the code behind where is placed the button. How to say these methods are in RemoveAllCommand Class in XAML page. Also I want to fire this command when click mouse event is produced in the button so I do an input binding, is it correct? Thanks

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• Building a generic page "Query Analyzer" like in Asp.net with SMO

  - by Rodrigo

  Hello, I'm build a web page in ASP.net is supposed to work just like Query Analyzer. It has basically a textarea to input the sql command, and an Execute button. I'm using SMO to execute the command in the database, as follows: //Create object SMO Microsoft.SqlServer.Management.Smo.Server server = new Microsoft.SqlServer.Management.Smo.Server(new Microsoft.SqlServer.Management.Common.ServerConnection(oConn)); //To execute the command server.ConnectionContext.ExecuteNonQuery(tbx_cmd.Text); //OR myDataset = server.ConnectionContext.ExecuteWithResults(tbx_cmd.Text); The problem is that the textarea command can contain anything, from a stored procedure (with GO's statements) and any select command that return resultsets, just like Query Analyzer. But, if I have GO statements, I only can perform the query using ExecuteNonQuery method. If I use the ExecuteWithResults method, it raises errors because of the GO statements. And if I want the resultsets to be available, of course I can only use the ExecuteWithResults method. Does anybody knows how can I do to execute the same command texts at the same time? Thank you!

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• WPF ICommand over a button

  - by toni

  I have implemented a custom IComand class for one of my buttons. The button is placed in a page 'MyPage.xaml' but its custom ICommand class is placed in another class, not in the MyPage code behind. Then from XAML I want to bind the button with its custom command class and then I do: MyPage.xaml: <Page ...> <Page.CommandBindings> <CommandBinding Command="RemoveAllCommand" CanExecute="CanExecute" Executed="Execute" /> </Page.CommandBindings> <Page.InputBindings> <MouseBinding Command="RemoveAllCommand" MouseAction="LeftClick" /> </Page.InputBindings> <...> <Button x:Name="MyButton" Command="RemoveAllCommand" .../> <...> </Page> and the custom command button class: // Here I derive from MyPage class because I want to access some objects from // Execute method public class RemoveAllCommand : MyPage, ICommand { public void Execute(Object parameter) { <...> } public bool CanExecute(Object parameter) { <...> } public event EventHandler CanExecuteChanged { add { CommandManager.RequerySuggested += value; } remove { CommandManager.RequerySuggested -= value; } } } My problem is how to say MyPage.xaml that Execute and CanExecute methods for the button is in another class and not the code behind where is placed the button. How to say these methods are in RemoveAllCommand Class in XAML page. Also I want to fire this command when click mouse event is produced in the button so I do an input binding, is it correct? Thanks

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• Stretch Background Image Resizes With Browser Windows

  - by user241673

  I am trying to replicate the image resizing found at http://devkick.com/lab/fsgallery/ but with the code I have below, it is not working properly. When resizing the browser window to have small width and big height, white space shows up at the bottom of the page. feel free to see it & edit at http://jsbin.com/ifolu3 The CSS: html, body {width:100%; height:100%; overflow:hidden;} div.bg {position:absolute; width:200%; height:200%; top:-50%; left:-50%;} img.bg {min-height:50%; min-width:50%; margin:0 auto; display:block;} The JS/jQuery: $(window).resize(function(){ var ratio = Math.max($(window).width()/$('img.bg').width(),$(window).height()/$('img.bg').height()); if ($(window).width() $(window).height()) { $('img.bg').css({width:image.width()*ratio,height:'auto'}); } else { $('img.bg').css({width:'auto',height:image.height()*ratio}); } }); The HTML - (sorry for the formatting, had trouble getting "<" to show) [body] [div class="bg"] [img class="bg" src="bg.jpg" /] [/div] [/body]

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• 2 questions. IDO mode not caching properly / forcing buffers to named windows.

  - by user112043

  1 My ido mode does not properly cache filenames / folders. It will list files inside a folder, but from a while ago without any of the newer files showing. Any suggestions ? 2 In jde, when I have multiple windows open, compiling on one window will create a corresponding "* name of the class *" that will open on the next window in order. This is fine if I only have one window open but can I get some help writing a function that I could use to : Name a window Force all buffers of JDE compile server to only ever open in that window if it exists Force all run windows from jde in the form of * name of the class * to open in the same window if it exists. Jde automatically names the buffer " * name of the class * ", I will probably dig around the codes to find an easy fix for that... so if the code could just force all windows using a regexp containing * jde run - filename * or something along the lines would also work. Thanks for your help, first post here as well. I really would like just some ideas on what may be going wrong with 1, 2 if anyone is feeling kind.

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• Executing MSYS from cmd.exe with arguments

  - by Chris Allison

  Hi, I am trying to learn wxWidgets library, using mingw and msys to compile the code. So far so good, but I can not find a way to send a command to MSYS through CMD.exe. I use SublimeText to edit files, and it has an option to run makefiles. I want my makefiles to be able to open an instance of MSYS and send the g++ command and arguments to it. Example: Right now my makefile is: test.exe : main.cpp g++ -s main.cpp -o test.exe `wx-config --cxxflags` `wx-config --libs` When mingw32-make goes to run the g++ command, it sends it to cmd.exe, which doesn't handle the back-ticks and wx-config jazz. (But the command does work when run from inside MSYS and the directory holding main.cpp) I want to be able to use something like... msys --command g++ -s main.cpp*...etc..* so it will load the msys enviroment, and run the command. Is this possible? I am a huge makefile newbie, so if there is an easier way, please show me! TIA!

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• Call private methods and private properties from outside a class in PHP

  - by Pablo López Torres

  I want to access private methods and variables from outside the classes in very rare specific cases. I've seen that this is not be possible although introspection is used. The specific case is the next one: I would like to have something like this: class Console { final public static function run() { while (TRUE != FALSE) { echo "\n> "; $command = trim(fgets(STDIN)); switch ($command) { case 'exit': case 'q': case 'quit': echo "OK+\n"; return; default: ob_start(); eval($command); $out = ob_get_contents(); ob_end_clean(); print("Command: $command"); print("Output:\n$out"); break; } } } } This method should be able to be injected in the code like this: Class Demo { private $a; final public function myMethod() { // some code Console::run(); // some other code } final public function myPublicMethod() { return "I can run through eval()"; } private function myPrivateMethod() { return "I cannot run through eval()"; } } (this is just one simplification. the real one goes through a socket, and implement a bunch of more things...) So... If you instantiate the class Demo and you call $demo-myMethod(), you'll get a console: that console can access the first method writing a command like: > $this->myPublicMethod(); But you cannot run successfully the second one: > $this->myPrivateMethod(); Do any of you have any idea, or if there is any library for PHP that allows you to do this? Thanks a lot!

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