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• Reuse, Rewrite, or Refactor?

  - by Jon Purdy

  At work I inherited development of a PHP-based Web site after the consultant who originally produced it bailed out and left without a trace. Literally half of the code is ripped from online tutorials, and there are thousands of lines of cruft that, being incomplete, do precious little. Hardly any of it actually works. I've been trying to pull out the usable components, such as the layout (cleverly intermixed with code), session management (delicately seasoned with unescaped, unvalidated SQL queries), and a few other things, but it's very difficult to force all of this junk into place. Further, I don't speak idiomatic PHP, being more of a Perl user, and I'm supposed to be on this project principally for maintenance, so rewriting everything seems like it would take just as long as wrestling the existing monster back into place. As an aside, I have literally never seen anything as badly written as this. Welcome me to the world of working with other people's code, I guess, but I do hope it's not this common in the real world to have such gems as these: // WHY IS THIS NOT WORKING // I know this is bad but were going for working stuff right now... // This is a PHP code outputing Javascript code outputting HTML...do not go further // Not userful I'm looking for the best advice I can get here. What would you do if you were in my position?

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• Which language should I use to program a GUI application?

  - by Roman

  I would like to write a GUI application for management of information (text documents). In more details, it should be similar to the TiddlyWiki. I would like to have there some good visual effects (like nice representation for three structures, which you can rotate, some sound). I also would like to include some communication via Internet (for sharing and collaboration). In should include some features of such applications as a web browser, word processor, Skype. Which programming language should I use? I like the idea of usage of JavaScripts (like TddlyWiki). The good thing about that, is that user should not install anything. They open a file in a browser and it works! The bad thing is that JavaScript cannot communicate via internet with other applications. I think the choice of the programming language, in my case, id conditioned by 2 things: What can be done with this programming language (which restrictions are there). How easy to program. I would like to have "block" which can do a lot of things (rather than to program then and, in this way, to "rediscover a bicycle") ADDED: I would like to make it platform independent.

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• Axis webservice calls fail sometimes, access.log shows content!

  - by epischel

  Hi, our app is a webservice client (axis 1) to a third party webservice (also axis 1). We use it for some years now. Since a few weeks, we (as a client) get sometimes HTTP status 400 (bad request) or read timeouts when calling the webservice. Strangely, the access.log of the service shows part of the request or the response instead of the URL. It looks like this (looks like the end of the request string) x.x.x.x -> y.y.y.y:8080 - - [timestamp] "POST /webservice HTTP/1.0" 200 16127 0 x.x.x.x -> y.y.y.y:8080 - - [timestamp] "POST /webservice HTTP/1.0" 200 22511 1 x.x.x.x -> y.y.y.y:8080 - - [timestamp] "il=\"true\"/><nsl:text xsi:type=\"xsd:string\" xsi:nil=\"true\"/></SOAPSomeOperation></soapenv:Body></soapenv:Envelope> Axis/1.4" 400 299 0 or (some string out of the what looks like the request) x.x.x.x -> y.y.y.y:8080 - - [timestamp] ":string\">some text</sometag><othertag>moretext" 400 299 0 or in some other cases it looks like two requests thrown together (... means xml string left out): x.x.x.x -> y.y.y.y:8080 - - [timestamp] "...</someop></soapenv:Body></soapenv:Envelope>:xsd=\"http://www.w3.org/2001/XMLSchema\"...</soapenv:Body></soapenv:Envelope>" 400 299 0 Application log does not give any hints. Frequency of such call is 1% of all calls to that service. The only discriminator I know of so far is that it happens since operations informed us that the service url changed because of "server migration". Has anyone experienced such phenomenon yet? Has somebody got an idea whats wrong and how to fix? Thanks,

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• Open PDF Content files in ASP.NET MVC 2

  - by mcbingo

  I want to provide simple href links to my PDF forms that reside in my Forms folder. I have a created a simple Index.aspx and FormController Index action that simple iterates through the list of PDF files using my FormMetaData.xml file. The links get created just fine but when you click on the links I get a 404 exception. That looks like this: Server Error in '/' Application. The resource cannot be found. Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /Forms/ccindteamgolfform.pdf Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927 This seems like this should open up a new browser window with the PDF in it but perhaps I am making a bad assumption. The PDF content files have Build Action of Content and Copy to Output set to Copy Always. Here is an example output html for the link from my Index.aspx page: <span class="form"> <a href="Forms/ccindteamgolfform.pdf" target="_blank"> <span class="description">Entry Form</span></span> I must be missing something because this does not work. Do I need to add a MapRoute for these documents? Or am I missing something else with the routing? This seems like it should not be that difficult.

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• About Data Objects and DAO Design when using Hibernate

  - by X. Ma

  I'm hesitating between two designs of a database project using Hibernate. Design #1. (1) Create a general data provider interface, including a set of DAO interfaces and general data container classes. It hides the underneath implementation. A data provider implementation could access data in database, or an XML file, or a service, or something else. The user of a data provider does not to know about it. (2) Create a database library with Hibernate. This library implements the data provider interface in (1). The bad thing about Design #1 is that in order to hide the implementation details, I need to create two sets of data container classes. One in the general data provider interface - let's call them DPI-Objects, the other set is used in the database library, exclusively for entity/attribute mapping in Hibernate - let's call them H-Objects. In the DAO implementation, I need to read data from database to create H-Objects (via Hibernate) and then convert H-Objects into DPI-Objects. Design #2. Do not create a general data provider interface. Expose H-Objects directly to components that use the database lib. So the user of the database library needs to be aware of Hibernate. I like design #1 more, but I don't want to create two sets of data container classes. Is that the right way to hide H-Objects and other Hibernate implementation details from the user who uses the database-based data provider? Are there any drawbacks of Design #2? I will not implement other data provider in the new future, so should I just forget about the data provider interface and use Design #2? What do you think about this? Thanks for your time!

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• How do I exclude data from local table schema_migrations from being pushed to Heroku DB?

  - by Thierry Lam

  I was able to push my Ruby on Rails app with MySQL(local dev) to the Heroku server along with migrating my model with the command heroku rake db:migrate. I have also read the documentation on Database Import/Export. Is that doc referring to pushing actual data from my local dev DB to whichever Heroku's DB? Do I need to modify anything in the file database.yml to make it happen? I ran the following command: heroku db:push and I am getting the error: Sending data 2 tables, 3 records !!! Caught Server Exception | ETA: --:--:-- Taps Server Error: PGError ERROR: duplicate key value violates unique constraint "unique_schema_migrations" I have 2 tables, one I create for my app and the other schema_migrations. The total number of entries among the 2 tables is 3. I'm also printing the number of entries I have in the table I have created and it's showing 0. Any ideas what I might be missing or what I am doing wrong? EDIT: I figured out the above, Heroku's DB already have schema_migrations the moment I ran migrate. New question: Does anyone know how I can exclude data from a specific table from being pushed to Heroku DB. The table to exclude in this case will be schema_migrations. Not so good solution: I googled around and someone else was having the same issue. He suggested naming the schema_migrations table to zschema_migrations. In this way data from the other tables will be pushed properly until it fails on the last table. It's a pretty bad solution but will do for the time being. A better solution will be to use an existing Rails command which can reset a specific table from a database. I don't think Rake can do that.

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• svnserve not strictly required?

  - by Kev

  I was reading the Red Bean book and noticed this paragraph: Do not be seduced by the simple idea of having all of your users access a repository directly via file:// URLs. Even if the repository is readily available to everyone via a network share, this is a bad idea. It removes any layers of protection between the users and the repository: users can accidentally (or intentionally) corrupt the repository database, it becomes hard to take the repository offline for inspection or upgrade, and it can lead to a mess of file permission problems (see the section called “Supporting Multiple Repository Access Methods”). Note that this is also one of the reasons we warn against accessing repositories via svn+ssh:// URLs—from a security standpoint, it's effectively the same as local users accessing via file://, and it can entail all the same problems if the administrator isn't careful. I realized that, since I'm the only one accessing the repository, ever, none of these caveats seem to apply. Can I safely down svnserve then and only ever have to worry about upgrading my TortoiseSVN client, not both the client and the server whenever there's a new version out? (I've tried it already--just needed to use the Relocate feature to switch from svn:// to file://--but I wanted to make sure something wouldn't be sneaking up on me if I left it this way.)

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• jboss Resteasy for java 5

  - by Anand

  Is there a resteasy version that runs on jdk 5 enviroment? I tried to compile my code in java 5 but it didnot work saying version problem. Is there a solution here? type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Error instantiating servlet class org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879) org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) java.lang.Thread.run(Thread.java:595) root cause java.lang.UnsupportedClassVersionError: Bad version number in .class file (unable to load class javax.ws.rs.core.UriInfo) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1964) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:933) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1405) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284) java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) java.lang.Class.getDeclaredConstructors0(Native Method) java.lang.Class.privateGetDeclaredConstructors(Class.java:2357) java.lang.Class.getConstructor0(Class.java:2671) java.lang.Class.newInstance0(Class.java:321) java.lang.Class.newInstance(Class.java:303) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:879) org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665) org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528) org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81) org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689) java.lang.Thread.run(Thread.java:595) note The full stack trace of the root cause is available in the Apache Tomcat/5.5.31 logs.

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• Adding a selection box into an ItemsControl?

  - by Jens

  I have a WPF ItemsControl with a Canvas ItemPanel. Drawing from an internal source, it displays lots of automatically generated Rectangles. As of now, it looks like this: <Window // .. NameSpaces > <Window.Resources> <DataTemplate x:Key="binTemplate"> <Rectangle x:Name="Rect" VerticalAlignment="Bottom" Canvas.Left="10" StrokeThickness="0"> // .. Databinding Height, Width, etc </Rectangle> </DataTemplate> </Window.Resources> <DockPanel x:Name="LayoutRoot" LastChildFill="True"> <ItemsControl ItemsSource="{Binding Bins}" ItemTemplate="{StaticResource binTemplate}"> <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <Canvas MouseDown="Canvas_MouseDown" MouseMove="Canvas_MouseMove" MouseUp="Canvas_MouseUp"> <Rectangle x:Name="Selection" Canvas.Left="0" Canvas.Top="0" Visibility="Hidden" /> </Canvas> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> </ItemsControl> </DockPanel> </Window> I now try to implement a selection box, too.. well.. select my Rectangles. =) I tried just adding the box into the ItemsControl PanelTemplate, and controlling it with the Canvas mouse events, but it appears I am not allowed to do so. The error message is "Cannot explicitly modify Children collection of Panel used as ItemsPanel for ItemsControl. ItemsControl generates child elements for Panel." What is the preferred way to implement such behavior? I thought about overlaying another canvas (using negative Margin) and drawing the selection box in there, but that seems like a bad hack. Thanks in advance!

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• Book recommendation for Silverlight

  - by Mathias Weyel

  Hi there, yet another question for recommendations for a book on Silverlight. I look for a book that covers the UI and styling and, if possible, custom drawing and graphics. Very important for me is the style of the book - it should focus on the actual programming and not on where to click in Visual Studio to get things done. Let's take a fictional example for proper usage of the DataGrid control: Bad: To use the data grid, drag it from the toolbox onto the control. You can change the background color by clicking on “Background” in the properties. To define custom columns, click on columns and edit them in the configuration window that opens. Good: To use the DataGrid, you need a reference to the blah dll and declare the namespace in the XAML like this (blah), the data model should be like blah and if you want to define how the columns look like, you need to define them like this (more blah). And if you want to do this in C# because you for whatever reason aren’t able or willing to use XAML, this would look like blah. Bonus points for coverage of topics like how to manage resources (images/fonts) and internationalization. There are quite some snippets on how to do that on the internet but somehow each of them looks like they work but are not a proper way of doing it. cheers Mathias

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• Wordpress creating plugin for most viewed posts problem?

  - by user303832

  Hello,I just want to create plugin that will when visitor(user,visitor,...) visit some post,remember what post,and to increment counter of that post,I wrote this code,but sometimes,counter is incremented,even post isn't viewed,or post with other Id is added to a table.Can someone help me with this,please.I know that there are plugins for this that I'm trying to do,but still want to write this plugin. function IncrementPostCount($the_content) { global $post; global $wpdb; if(($post->post_status == 'publish') && (int)$post->ID) { if(is_single()) { // just for single post - not for page $postID = (int)$post->ID; $postTitle = urlencode($post->post_title); $postLink = urlencode(get_permalink($post->ID)); $oneRow = $wpdb->get_row("SELECT * FROM wp_postovi WHERE postAjDi='$postID'"); if(empty ($oneRow)) { $postCounter = 1; $data_array = array( 'readnTimes' => $postCounter, 'linkPost'=>$postLink, 'TitlePost'=>$postTitle, 'postAjDi'=>$postID); $wpdb->insert('wp_najcitaniji_postovi', $data_array); } else { $postCounter = intval($oneRow->readnTimes) + 1; $data_array = array('readnTimes' => $postCounter); $where_array = array('postAjDi'=>intval($oneRow->postAjDi)); $wpdb->update('wp_postovi',$data_array,$where_array); } return $the_content; } return $the_content; } } add_filter('the_content','IncrementPostCount'); Sorry on my bad english,tnx in advance.

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• Strange behaviour with GregorianCalendar

  - by Spark

  I just encountered a strange behaviour with the GregorianCalendar class, and I was wondering if I really was doing something bad. This only appends when the initialization date's month has an actualMaximum bigger than the month I'm going to set the calendar to. Here is the example code : // today is 2010/05/31 GregorianCalendar cal = new GregorianCalendar(); cal.set(Calendar.YEAR, 2010); cal.set(Calendar.MONTH, 1); // FEBRUARY cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH)); cal.set(Calendar.HOUR_OF_DAY, cal.getActualMaximum(Calendar.HOUR_OF_DAY)); cal.set(Calendar.MINUTE, cal.getActualMaximum(Calendar.MINUTE)); cal.set(Calendar.SECOND, cal.getActualMaximum(Calendar.SECOND)); cal.set(Calendar.MILLISECOND, cal.getActualMaximum(Calendar.MILLISECOND)); return cal.getTime(); // => 2010/03/03, wtf I know the problem is caused by the fact that the calendar initialization date is a 31 day month ( may ), which mess with the month set to february (28 days). The fix is easy ( just set day_of_month to 1 before setting year and month ), but I was wondering is this really was the wanted behaviour. Any thoughts ?

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• iPhone OS: Why is my managedModelObject not complying with Key Value Coding?

  - by nickthedude

  Ok so I'm trying to build this stat tracker for my app and I have built a data model object called statTracker that keeps track of all the stuff I want it to. I can set and retrieve values using the selectors, but if I try and use KVC (ie setValue: forKey: ) everything goes bad and says my StatTracker class is not KVC compliant: valueForUndefinedKey:]: the entity StatTracker is not key value coding-compliant for the key "timesLauched".' 2010-05-18 15:55:08.573 here's the code that is triggering it: NSArray *statTrackerArray = [[NSArray alloc] init]; statTrackerArray = [[CoreDataSingleton sharedCoreDataSingleton] getStatTracker]; NSNumber *number1 = [[NSNumber alloc] init]; number1 = [NSNumber numberWithInt:(1 + [[(StatTracker *)[statTrackerArray objectAtIndex:0] valueForKey:@"timesLauched"] intValue])]; [(StatTracker *)[statTrackerArray objectAtIndex:0] setValue:number1 forKey:@"timesLaunched" ]; NSError *error; if (![[[CoreDataSingleton sharedCoreDataSingleton] managedObjectContext] save:&error]) { NSLog(@"error writing to db"); } Not sure if this is enough code for you folks let me know what you need if you do need more. This would be so sweet if I could use KVC because I could then abstract all this stat tracking stuff into a single method call with a string argument for the value in question. At least that is what I hope to accomplish here. I'm actually now understanding the power of KVC but now I'm just trying to figure out how to make it work. Thanks! Nick

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• A moral dilemma - What job to go for?

  - by StefanE

  Here is the story: I have accepted an offer from a gaming company to work as an senior test engineer / developer. I have not yet received an signed copy of the contract. I will get a bit less salary then I asked for and it is as well less than I have today. The company have booked flight tickets for my move over there. Now comes the problem. I did an telephone interview with a company last week and they have asked me for an in person interview and are willing to pay for flights for the meeting. This company is my first choice(and have been for a few years) and would also benefit my career and I believe I will enjoy working there more. What should I do here.. I do feel uncomfortable giving a last minute rejection when I have over the phone accepted the offer, but on the other hand they have yet produced a signed contract and as well paying me a bit less than I think I'm worth. The business is small in many ways and I don't want to end up with a bad reputation. Would be great to hear your opinions!

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• need a near 100% uptime third-party web-accesible hosting for static web resources

  - by Jared Henderson

  I hope this makes sense: my business sells a website template, we currently have about 10,000 users. For various reasons that are unimportant to this question, I try to keep the file size of the zipped template we give them as small as possible. Because of this, I have taken a bunch of images and a couple of static files used by the template and moved them to external hosting. They are referenced by absolute URL in the css and markup, instead of shipping all of those images and files with every template. So, basically 10,000+ and growing users are requesting images and files from a third-party host. I don't use my own webhosting for this because I still kind of use a medium-cheap shared hosting for my website, and if it goes down, 10,000+ users are potentially effected. Currently I'm having the template directly access files inside of an open-source google-code project that I created for just this purpose. But, that seems like a bastardization of what a google-code repository is for, and plus, google code (i've found out) often spews 502 bad gateway errors for hours at a time. So, anyway, my question is: where is the right kind of place to host these? Obviously I'm willing to pay. My main needs are speed and uptime, since the images and files are being requested from thousands of different websites every day. Is this something that I should use Amazon S3 for? I'm guessing there's some kind of service exactly for this kind of need, but I'm at a loss to figure out what it is.

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• background image shows up on right-click show image, but not on webpage

  - by William

  okay, so I'm trying to set up a webpage with a div wrapping two other divs, and the wrapper div has a background, and the other two are transparent. How come this isn't working? here is the CSS: .posttext{ float: left; width: 70%; text-align: left; padding: 5px; background-color: transparent !important; } .postavi{ float: left; width: 100px; height: 100%; text-align: left; background-color: transparent !important; padding: 5px; } .postwrapper{ background-image:url('images/post_bg.png'); background-position:left top; background-repeat:repeat-y; } and here is the HTML: <div class="postwrapper"> <div class="postavi"><img src="http://prime.programming-designs.com/test_forum/images/avatars/hacker.png" alt="hacker"/></div><div class="posttext"><p style="color: #ff0066">You will have bad luck today.</p>lol</div> </div> Edit: at request, here is a link to the site: http://prime.programming-designs.com/test_forum/viewthread.php?thread=33 Edit: edited css to be correct, still suffering same problem

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• BeautifulSoup can't parse a webpage?

  - by JLTChiu

  I am using beautiful soup for parsing webpage now, I've heard it's very famous and good, but it doesn't seems works properly. Here's what I did import urllib2 from bs4 import BeautifulSoup page = urllib2.urlopen("http://www.cnn.com/2012/10/14/us/skydiver-record-attempt/index.html?hpt=hp_t1") soup = BeautifulSoup(page) print soup.prettify() I think this is kind of straightforward. I open the webpage and pass it to the beautifulsoup. But here's what I got: Warning (from warnings module): File "C:\Python27\lib\site-packages\bs4\builder\_htmlparser.py", line 149 "Python's built-in HTMLParser cannot parse the given document. This is not a bug in Beautiful Soup. The best solution is to install an external parser (lxml or html5lib), and use Beautiful Soup with that parser. See http://www.crummy.com/software/BeautifulSoup/bs4/doc/#installing-a-parser for help.")) ... HTMLParseError: bad end tag: u'</"+"script>', at line 634, column 94 I thought CNN website should be well designed, so I am not very sure what's going on though. Does anyone has idea about this?

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• Conditional macro expansion

  - by Dave DeLong

  Heads up: This is a weird question. I've got some really useful macros that I like to use to simplify some logging. For example I can do Log(@"My message with arguments: %@, %@, %@", @"arg1", @"arg2", @"arg3"), and that will get expanded into a more complex method invocation that includes things like self, _cmd, __FILE__, __LINE__, etc, so that I can easily track where things are getting logged. This works great. Now I'd like to expand my macros to not only work with Objective-C methods, but general C functions. The problem is the self and _cmd portions that are in the macro expansion. These two parameters don't exist in C functions. Ideally, I'd like to be able to use this same set of macros within C functions, but I'm running into problems. When I use (for example) my Log() macro, I get compiler warnings about self and _cmd being undeclared (which makes total sense). My first thought was to do something like the following (in my macro): if (thisFunctionIsACFunction) { DoLogging(nil, nil, format, ##__VA_ARGS__); } else { DoLogging(self, _cmd, format, ##__VA_ARGS__); } This still produces compiler warnings, since the entire if() statement is substituted in place of the macro, resulting in errors with the self and _cmd keywords (even though they will never be executed during function execution). My next thought was to do something like this (in my macro): if (thisFunctionIsACFunction) { #define SELF nil #define CMD nil } else { #define SELF self #define CMD _cmd } DoLogging(SELF, CMD, format, ##__VA_ARGS__); That doesn't work, unfortunately. I get "error: '#' is not followed by a macro parameter" on my first #define. My other thought was to create a second set of macros, specifically for use in C functions. This reeks of a bad code smell, and I really don't want to do this. Is there some way I can use the same set of macros from within both Objective-C methods and C functions, and only reference self and _cmd if the macro is in an Objective-C method?

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• Create x509 certificate with openssl/makecert tool

  - by Zé Carlos

  I'm creating a x509 certificate using makecert with the following parameters: makecert -r -pe -n "CN=Client" -ss MyApp I want to use this certificate to encrypt and decrypt data with RSA algoritm. I look to generated certificate in windows certificate store and everything seems ok (It has a private key, public key is a RSA key with 1024 bits and so on..) Now i use this C# code to encrypt data: X509Store store = new X509Store("MyApp", StoreLocation.CurrentUser); store.Open(OpenFlags.ReadOnly); X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindBySubjectName, "Client", false); X509Certificate2 _x509 = certs[0]; using (RSACryptoServiceProvider rsa = (RSACryptoServiceProvider)_x509.PrivateKey) { byte[] dataToEncrypt = Encoding.UTF8.GetBytes("hello"); _encryptedData = rsa.Encrypt(dataToEncrypt, true); } When executing the Encrypt method, i receive a CryptographicException with message "Bad key". I think the code is fine. Probably i'm not creating the certificate properly. Any comments? Thanks ---------------- EDIT -------------- If anyone know how to create the certificate using OpenSsl, its also a valid answer for me.

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• source of historical stock data

  - by rmeador

  I'm trying to make a stock market simulator (perhaps eventually growing into a predicting AI), but I'm having trouble finding data to use. I'm looking for a (hopefully free) source of historical stock market data. Ideally, it would be a very fine-grained (second or minute interval) data set with price and volume of every symbol on NASDAQ and NYSE (and perhaps others if I get adventurous). Does anyone know of a source for such info? I found this question which indicates Yahoo offers historical data in CSV format, but I've been unable to find out how to get it in a cursory examination of the site linked. I also don't like the idea of downloading the data piecemeal in CSV files... I imagine Yahoo would get upset and shut me off after the first few thousand requests. I also discovered another question that made me think I'd hit the jackpot, but unfortunately that OpenTick site seems to have closed its doors... too bad, since I think they were exactly what I wanted. I'd also be able to use data that's just open/close price and volume of every symbol every day, but I'd prefer all the data if I can get it. Any other suggestions?

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• Java InputReader. Detect if file being read is binary?

  - by Trizicus

  I had posted a question in regards to this code. I found that JTextArea does not support the binary type data that is loaded. So my new question is how can I go about detecting the 'bad' file and canceling the file I/O and telling the user that they need to select a new file? class Open extends SwingWorker<Void, String> { File file; JTextArea jta; Open(File file, JTextArea jta) { this.file = file; this.jta = jta; } @Override protected Void doInBackground() throws Exception { BufferedReader br = null; try { br = new BufferedReader(new FileReader(file)); String line = br.readLine(); while(line != null) { publish(line); line = br.readLine(); } } finally { try { br.close(); } catch (IOException e) { } } return null; } @Override protected void process(List<String> chunks) { for(String s : chunks) jta.append(s + "\n"); } }

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• C# Uploading files to file server

  - by JustFoo

  Hello All, Currently I have an application that receives an uploaded file from my web application. I now need to transfer that file to a file server which happens to be located on the same network (however this might not always be the case). I was attempting to use the webclient class in C# .NET. string filePath = "C:\\test\\564.flv"; try { WebClient client = new WebClient(); NetworkCredential nc = new NetworkCredential(uName, password); Uri addy = new Uri("\\\\192.168.1.28\\Files\\test.flv"); client.Credentials = nc; byte[] arrReturn = client.UploadFile(addy, filePath); Console.WriteLine(arrReturn.ToString()); } catch (Exception ex) { Console.WriteLine(ex.Message); } The machine located at 192.168.1.28 is a file server and has a share c:\Files. As of right now I am receiving an error of Login failed bad user name or password, but I can open explorer and type in that path login successfully. I can also login using remote desktop, so I know the user account works. Any ideas on this error? Is it possible to transfer a file directly like that? With the webclient class or maybe some other class? Thanks

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• Sanitizing user input that will later be e-mailed - what should I be worried about?

  - by Kevin Burke

  I'm interning for an NGO in India (Seva Mandir, http://sevamandir.org) and trying to fix their broken "subscribe to newsletter" box. Because the staff isn't very sophisticated and our web host isn't great, I decided to send the relevant data to the publications person via mail() instead of storing it in a MySQL database. I know that it's best to treat user input as malicious, and I've searched the SO forums for posts relevant to escaping user data for sending in a mail message. I know the data should be escaped; what should I be worried about and what's the best way to sanitize the input before emailing it? Form flow: 1. User enters email on homepage and clicks Submit 2. User enters name, address, more information on second page (bad usability, I know, but my boss asked me to) and clicks "Submit" 3. Collect the data via $_POST and email it to the publications editor (and possibly send a confirmation to the subscriber). I am going to sanitize the email in step 2 and the other data in step 3. I appreciate your help, Kevin

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• Long text input from user and PDF generation

  - by Petteri Hietavirta

  I have built a web application that can be seen as an overcomplicated application form. There are bunch of text areas with a given character limit. After the form submission various things happen and one of them is PDF generation. The text is queried from the DB and inserted in the PDF template created in iReports. This works fine but the major pain is overflowing text. The maximum number of characters is set based on 'average' text. But sometimes people prefer to write with CAPS or add plenty of linefeeds to format their text. These then cause user's text to overflow the space given in PDF. Unfortunately the PDF document must look like a real application form so I cannot allow unlimited space. What kind of approaches you have used to tackle this? Clean/restrict user input? Calculate the space requirement of the text based on font metrics? Provide preview of the PDF? (too bad users are not allowed to change their input after submission...)

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• Dynamically generated PDF files working in most readers except Adobe Reader

  - by Shane

  I'm trying to dynamically generate PDFs from user input, where I basically print the user input and overlay it on an existing PDF that I did not create. It works, with one major exception. Adobe Reader doesn't read it properly, on Windows or on Linux. QuickOffice on my phone doesn't read it either. So I thought I'd trace the path of me creating the files - 1 - Original PDF of background PDF 1.2 made with Adobe Distiller with the LZW encoding. I didn't make this. 2 - PDF of background PDF 1.4 made with Ghostscript. I used pdf2ps then ps2pdf on the above to strip LZW so that the reportlab and pyPDF libraries would recognize it. Note that this file looks "fuzzy," like a bad scan, in Adobe Reader, but looks fine in other readers. 3 - PDF of user-input text formatted to be combined with background PDF 1.3 made with Reportlab from user input. Opens properly and looks good in every reader I've tried. 4 - Finished PDF PDF 1.3 made from PyPDF's mergePage() function on 2 and 3. Does not open in: Adobe Reader for Windows Adobe Reader for Linux QuickOffice for Android Opens perfectly in: Google Docs' PDF viewer on the web evince for linux ghostscript viewer for linux Foxit reader for Windows Preview for Mac Are there known issues that I should know about? I don't know exactly what "flate" is, but from the internet I gather that it's some sort of open source alternative to LZW for PDF compression? Could that be causing my problem? If so, are there any libraries I could use to fix the cause in my code?

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