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  • Issues with Rails, Amazon S3, and protected URLs

    - by Shpigford
    So I followed this little tutorial about protecting downloads of files that are uploaded to Amazon S3 with Paperclip. When I've developed locally, it's worked fine, but since pushing the exact same code to a production server...I now get this error from Amazon when I try to access the files: <Error> <Code>InvalidArgument</Code> <Message>Either the Signature query string parameter or the Authorization header should be specified, not both</Message> <ArgumentValue>Basic dGVjaHVrdWxlbGU6ZWxlbHVrdWhjZXQ=</ArgumentValue> <ArgumentName>Authorization</ArgumentName> <RequestId>F6E455857C54F95A</RequestId> <HostId>X4QA2pw9wpHtJtJ2T8qxCyINjq4PLHQVF4VrlYjpX7Ayh694BgQprh5p8H7NRCAt</HostId> </Error> Example URL: http://s3.amazonaws.com/media.example.com/assets/videos/1/original.mov?AWSAccessKeyId=MY_ACCESS_KEY&Expires=1271972624&Signature=7wWH2WYHPO0o9szwPJbimUMqAig%3D That URL is generated using AWS::S3::S3Object.url_for using the aws-s3 gem. So...not even sure where to start. The fact that it works fine when the app is running locally but not when in production really doesn't make sense. The production server is running Ubuntu 8.04.4 LTS (Hardy).

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  • Date from String using NSDateFormatter regardless 12h-24h setting

    - by maxf99
    Hello everybody, Today my question is about date formats and strings. My application downloads some strings representing dates from the internet. The date format is always like this: "2010-05-24 at 20:45" I need to convert this string into an NSDate object in order to perform some date manipulations. I tried this code: NSString * dateString = @"2010-05-24 at 20:45" // actually downloaded from the internet NSDateFormatter * myDateFormatter = [[NSDateFormatter alloc] init]; [myDateFormatter setDateFormat:@"yyyy-MM-dd 'at' HH:mm"]; NSDate * dateFromString = [myDateFormatter dateFromString:dateString]; This seems to work perfectly fine as long as the iPhone is set to 24h clock. As long as I switch to 12h clock in the general settings the NSDate object is not created (and the application happily crashes) I have read others having similar problems but I don't seem to find a solution. Now the questions: It doesn't make sense to me that the NSDateFormatter is sensible to user settings as long as I am specifying which format it is supposed to use to parse the string (which is not modifiable because it comes from the web), what's the use of checking user settings? More important, how can I get my task performed (to get an NSDate object from the string regardless the user settings)?

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  • Choosing an installer product that is free and will download/install the .NET Framework

    - by Coder7862396
    I'm currently using the Visual Studio Installer (Setup Project) in Visual Studio 2010 as the installer for MyProgram. It has some quirky bugs and is not very customizable so I would like to switch to another installer product. Here are my requirements: Must be free (and licensed for commercial use) Must install the Windows Installer 3.1 and .NET Framework 4.0 if the client doesn't have them The installer will download them if they are not available The code for detecting the .NET Framework and downloading it must be written by Microsoft (I do not want to have to update hard-coded URLs and registry keys in the future). I know that the Windows SDK includes a setup bootstrap that does this (C:\Program Files\Microsoft SDKs\Windows\v7.0A\Bootstrapper) In the future, when .NET Framework 5 is released and MyProgram uses it, no installer code will need to be changed, the updated installer product should see that MyProgram now uses the .NET Framework version 5 and will install that Here are my current choices: Visual Studio Installer: Automatically detects/downloads/installs Windows Installer and .NET Framework using a bootstrapper Setup.exe (Good!) Limited/buggy functionality (Uninstall shortcuts in the Start Menu cause empty folders to be left behind during uninstall, asking the user if they want a desktop shortcut requires a lot of work, etc.) NSIS: Doesn't natively support the .NET Framework so adding it as a prerequisite requires excessive coding, hardcoded URLS, etc. Inno Setup: Doesn't natively support the .NET Framework so adding it as a prerequisite requires excessive coding, hardcoded URLs, etc. WiX: Steep learning curve... not sure if I want to spend weeks learning it only to find out that it has the same uninstall problem as the Visual Studio Installer (because they both use MSI files) InstallShield LE 2010: Downloading it requires me to setup a fake email account to register just to download it. Then once it is installed it has to contact the company's servers and transmit some private information to them before I'm even allowed to try the free version. This is the most insidious form of DRM that there is and I will not accept it.

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  • looking for a license key algorithm.

    - by giulio
    There are alot of questions relating to license keys asked on stackoverflow. But they don't answer this question. Can anyone provide a simple license key algorithm that is technology independent and doesn't required a diploma in mathematics to understand ? The license key algorithm is similar to public key encryption. I just need something simple that can be implemented in any platform .Net/Java and uses simple data like characters. Written as Pseudo code is perfect. So if a person presents a string, a complementary string can be generated that is the authorisation code. Below is a common scenario that it would be used for. Customer downloads s/w which generates a unique key upon initial startup/installation. S/w runs during trial period. At end of trial period an authorisation key is required. Customer goes to designated web-site, enters their code and get authorisation code to enable s/w, after paying :) Don't be afraid to describe your answer as though you're talking to a 5 yr old as I am not a mathemtician.

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  • Formatting inline many-to-many related models presented in django admin

    - by Jonathan
    I've got two django models (simplified): class Product(models.Model): name = models.TextField() price = models.IntegerField() class Invoice(models.Model): company = models.TextField() customer = models.TextField() products = models.ManyToManyField(Product) I would like to see the relevant products as a nice table (of product fields) in an Invoice page in admin and be able to link to the individual respective Product pages. My first thought was using the admin's inline - but django used a select box widget per related Product. This isn't linked to the Product pages, and also as I have thousands of products, and each select box independently downloads all the product names, it quickly becomes unreasonably slow. So I turned to using ModelAdmin.filter_horizontal as suggested here, which used a single instance of a different widget, where you have a list of all Products and another list of related Products and you can add\remove products in the later from the former. This solved the slowness, but it still doesn't show the relevant Product fields, and it ain't linkable. So, what should I do? tweak views? override ModelForms? I Googled around and couldn't find any example of such code...

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  • Problem creating checklist (similar to TouchCells sample code) app for iPhone. Random cells get chec

    - by Jonah
    I've been having a problem creating a checklist in the style of the TouchCells example from the Apple sample code. Basically, it is a table that allows multiple selection of its items and gives each selected item a check mark. The problem I'm having is that when I select an item and then scroll down the screen, another item (off the screen) will randomly be selected. It seems that it is usually the next cell to be loaded on the screen. I couldn't figure out what I was doing wrong so I tested it with Apple's TouchCells code. In their program though, they only have 6 cells and there is no room to scroll. So, I duplicated some of the items from the plist file to make more cells and... the same problem pops up. If you select a cell and then scroll, another cell will randomly be selected. Update I recently tried the iPhone Dev Cookbook sample code named "Checks" and... you guessed it, the same problem. Here's the link: http://code.google.com/p/cookbooksamples/downloads/list This is driving me nuts. Is it a bug or am I doing something wrong? Does anyone know how to fix this? Thanks! Also, does anyone know of any sample code that shows how to do this?

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  • Hooking the http/https protocol in IE causes GET requests to be sequential

    - by watsonmw
    I'm using the PassthruAPP method to hook into HTTP/HTTPS requests made by IE. It's working well for the most part, however I noticed a problem. Only one download thread is active at a time. I can see two IInternetProtocol objects getting created, but IE uses only one at a time. This is happening with IE7. The odd thing is that the problem occurs when overriding the existing default HTTP/HTTPS handler, even if the handler is not the one being used to make the request. E.g. Registering a handler for the HTTPS protocol will cause HTTP requests to be made sequentially, even though HTTP requests are not hooked. I installed Google Gears and it has the same problem. This always happens for the first few items on the page, but it seems that after the document complete is issued, concurrent downloads can occur again. For example Javascript code that is executed after the page has finished loading can load images concurrently just fine. One option is to try to IAT patch the 'IInternetProtocol' registered for HTTP requests, but Google Gears does this already and it has the same problem. I know installing a HTTP Proxy is another option, but I don't want to monkey with the users' HTTP Proxy settings if there another option.

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  • CSS3 Gradients and border-radius leading to extraneous background in webkit

    - by iamfriendly
    Hello all, After my 1st question with relation to CSS3 gradients in which I was recreating an 'inner glow' I've now got to the point where I'm not so happy with the way in which webkit renders the effect. Basically, if you give an element a background colour and apply a border radius to it, webkit lets the background colour "bleed" out to fill the surrounding box (making it look a bit awful) To reproduce the undesirable effect, try something like the following section#featured footer p a { color: rgb(255,255,255); text-shadow: 1px 1px 1px rgba(0,0,0,0.6); text-decoration: none; padding: 5px 10px; border-radius: 15px; -moz-border-radius: 15px; -webkit-border-radius: 15px; background: rgb(98,99,100); -moz-box-shadow: inset 0 0 8px rgba(0,0,0, 0.25); -webkit-box-shadow: inset 0 0 8px rgba(0,0,0, 0.25); } You can see an example of this here: http://iamfriendly.clients.friendlygp.com/ Apparently this appears to be a Windows-only problem, so for those on a Mac, here's a screenshot: (Check the 'carry on reading' button) You'll notice that in Safari/Chrome (the latest available public downloads as well as the latest nightlies as far as I can tell), you get a rather ugly background colour bleed. However, in Firefox, you should be able to see what I'm after. If you're in Internet Explorer, woe betide you. Does anyone know of a technique which will allow me to produce the 'correct' effect? Is there a CSS Property which I've missed that tells webkit to only have the background within the border-radius'd part of the containing box. I could potentially use an image, but I'm really trying to avoid it. Naturally, as we're dealing with CSS3 and the landscape is continually changing, I might just have to 'lump' it and revert to an image. However, if anyone can suggest an alternative I would be very much appreciative!

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  • Java Applet not caching

    - by John Fogerty
    Hello world, I'm having a problem with a Java applet I've deployed that is refusing to be cached in the jvm's "sticky" cache (or by the browser). For some reason every time a user loads the page this applet is on, the jvm re-downloads the jar file from the server which causes a long delay. The webpage containing the applet is being accessed via the internet, so according to Sun's Java applet documentation I'm using an <applet> tag rather than an <object> or <embed> tag. Any help debugging or identifying the problem would be much appreciated. Below is the full applet tag I'm using: <applet alt="Scanning Applet failed to load" archive="scanning.jar" code="scanning.scanlet.class" codebase="/java/" codetype="application/java" height="30" mayscript="True" name="scanlet" width="200"> <param name="domain" value="192.168.12.23" /> <param name="publishName" value="scan_attachment" /> <param name="publishURL" value="http://192.168.12.23/draft/update/52" /> <param name="curURL" value="http://192.168.12.23/draft/edit/52" /> Your browser is unable to process the Java &lt;APPLET&gt; tag needed to display this applet <br /> One solution would be to download a better web browser like <a href="http://www.mozilla.com/firefox">Mozilla's Firefox</a> </applet>

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  • Moving a ASP.NET application to the cloud

    - by user102533
    I am new to cloud computing, so please bear with me here. I have an existing ASP.NET application with SQL Server 2008 hosted on a Virtual Private Server. Here's what it briefly does: The front end accepts user's requests and adds them to a DB table A Windows Service running in the background picks up the request, processes it and sets a flag. The Windows Services also creates a file for the user to download. User downloads file I'd like to move this web application with the service to the cloud. The architecture I envision is that I'll have 1 Web server in which I will install the front end and the windows service. I'll also have a cloud files server for file storage. The windows service should somehow create a file and transfer it to the cloud file server (I assume this is possible?) My questions: Does the architecture look like I am going in the right direction? I know Amazon has been providing cloud services for a long time. If I want to do minimal changes to my application, should I go with Amazon, Rackspace, Azure or some other provider? I understand that I would not only pay for file storage and web server but also for the bandwidth of users downloading the file and the windows servic uploading the file to the cloud server. Can I assume these costs are negligible? Should I go with VPS + Cloud Files combination to begin with? Any other thoughts/suggestions?

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  • iPhone and Core Data: how to retain user-entered data between updates?

    - by Shaggy Frog
    Consider an iPhone application that is a catalogue of animals. The application should allow the user to add custom information for each animal -- let's say a rating (on a scale of 1 to 5), as well as some notes they can enter in about the animal. However, the user won't be able to modify the animal data itself. Assume that when the application gets updated, it should be easy for the (static) catalogue part to change, but we'd like the (dynamic) custom user information part to be retained between updates, so the user doesn't lose any of their custom information. We'd probably want to use Core Data to build this app. Let's also say that we have a previous process already in place to read in animal data to pre-populate the backing (SQLite) store that Core Data uses. We can embed this database file into the application bundle itself, since it doesn't get modified. When a user downloads an update to the application, the new version will include the latest (static) animal catalogue database, so we don't ever have to worry about it being out of date. But, now the tricky part: how do we store the (dynamic) user custom data in a sound manner? My first thought is that the (dynamic) database should be stored in the Documents directory for the app, so application updates don't clobber the existing data. Am I correct? My second thought is that since the (dynamic) user custom data database is not in the same store as the (static) animal catalogue, we can't naively make a relationship between the Rating and the Notes entities (in one database) and the Animal entity (in the other database). In this case, I would imagine one solution would be to have an "animalName" string property in the Rating/Notes entity, and match it up at runtime. Is this the best way to do it, or is there a way to "sync" two different databases in Core Data?

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  • loading child swf as3

    - by RichW
    Hi, I've been given an fla to make some changes too. Basically its a fairly long timeline animation with sound. So far I've successfully added a few button functions for sound etc.. but one has got me stumped. One of the buttons needs to load a child swf. I'm using the code below but I'm recieving an error - 'Error #1009: Cannot access a property or method of a null object reference'. I believe this may be refferring to an object that isn't set yet but I have no idea which one it is: Code: var mcExt:MovieClip = new MovieClip(); var ldr:Loader = new Loader(); ldr.contentLoaderInfo.addEventListener(Event.COMPLETE, swfLoaded); ldr.load(new URLRequest("Downloads.swf")); function swfLoaded(e:Event):void { mcExt = MovieClip(ldr.contentLoaderInfo.content); ldr.contentLoaderInfo.removeEventListener(Event.COMPLETE, swfLoaded); mcExt.x = 50; mcExt.y = 50; addChild(mcExt); } Any help on what is going wrong would be greatly appreciated! Thanks

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  • implementing a download manager that supports resuming

    - by Idan K
    hi, I intend on writing a small download manager in C++ that supports resuming (and multiple connections per download). From the info I gathered so far, when sending the http request I need to add a header field with a key of "Range" and the value "bytes=startoff-endoff". Then the server returns a http response with the data between those offsets. So roughly what I have in mind is to split the file to the number of allowed connections per file and send a http request per splitted part with the appropriate "Range". So if I have a 4mb file and 4 allowed connections, I'd split the file to 4 and have 4 http requests going, each with the appropriate "Range" field. Implementing the resume feature would involve remembering which offsets are already downloaded and simply not request those. Is this the right way to do this? What if the web server doesn't support resuming? (my guess is it will ignore the "Range" and just send the entire file) When sending the http requests, should I specify in the range the entire splitted size? Or maybe ask smaller pieces, say 1024k per request? When reading the data, should I write it immediately to the file or do some kind of buffering? I guess it could be wasteful to write small chunks. Should I use a memory mapped file? If I remember correctly, it's recommended for frequent reads rather than writes (I could be wrong). Is it memory wise? What if I have several downloads simultaneously? If I'm not using a memory mapped file, should I open the file per allowed connection? Or when needing to write to the file simply seek? (if I did use a memory mapped file this would be really easy, since I could simply have several pointers). Note: I'll probably be using Qt, but this is a general question so I left code out of it.

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  • Why does Silverlight player mislead user by leading him to think he can "choose whether to download

    - by Edward Tanguay
    I have a silverlight application which users can install out-of-browser. When the right-click and look at the update panel, it is set to "check for updates and let me choose whether to download and install them: However, with the following code, my application detects and downloads a new version automatically, and the new version is available upon the next start of the application without any user interaction: App.xaml.cs: private void Application_Startup(object sender, StartupEventArgs e) { this.RootVisual = new BaseApp(); if (Application.Current.IsRunningOutOfBrowser) { Application.Current.CheckAndDownloadUpdateAsync(); Application.Current.CheckAndDownloadUpdateCompleted += new CheckAndDownloadUpdateCompletedEventHandler(Current_CheckAndDownloadUpdateCompleted); } } void Current_CheckAndDownloadUpdateCompleted(object sender, CheckAndDownloadUpdateCompletedEventArgs e) { if (e.UpdateAvailable) { //an new version has been downloaded and silverlight version is the same //so user just has to restart application } else if (e.Error != null && e.Error is PlatformNotSupportedException) { //a new version is available but the silverlight version has changed //so user has to go to new website and install the appropriate silverlight version } else { //no update is available } } This happens to be what I want for this particular application, however: Isn't this misleading to the user since the Silverlight player leads him to believe that he will be able to "choose whether to download and install updates" when in fact, updates are being downloaded and installed without his knowing?

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  • C# Inheritence: Choosing what repository based on type of inherited class

    - by Oskar Kjellin
    I have been making a program that downloads information about movies from the internet. I have a base class Title, which represents all titles. Movie, Serie and Episode are inherited from that class. To save them to the database I have 2 services, MovieService and SerieService. They in turn call repositories, but that is not important here. I have a method Save(Title title) which I am not very happy with. I check for what type the title is and then call the correct service. I would like to perhaps write like this: ITitleService service = title.GetService(); title.GetSavedBy(service); So I have an abstract method on Title that returns an ITitleSaver, which will return the correct service for the instance. My question is how should I implement ITitleSaver? If I make it accept Title I will have to cast it to the correct type before calling the correct overload. Which will lead to having to deal with casting once again. What is the best approach to dealing with this? I would like to have the saving logic in the corresponding class.

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  • Static variable for communication among like-typed objects

    - by Dan Ray
    I have a method that asynchronously downloads images. If the images are related to an array of objects (a common use-case in the app I'm building), I want to cache them. The idea is, I pass in an index number (based on the indexPath.row of the table I'm making by way through), and I stash the image in a static NSMutableArray, keyed on the row of the table I'm dealing with. Thusly: @implementation ImageDownloader ... @synthesize cacheIndex; static NSMutableArray *imageCache; -(void)startDownloadWithImageView:(UIImageView *)imageView andImageURL:(NSURL *)url withCacheIndex:(NSInteger)index { self.theImageView = imageView; self.cacheIndex = index; NSLog(@"Called to download %@ for imageview %@", url, self.theImageView); if ([imageCache objectAtIndex:index]) { NSLog(@"We have this image cached--using that instead"); self.theImageView.image = [imageCache objectAtIndex:index]; return; } self.activeDownload = [NSMutableData data]; NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:[NSURLRequest requestWithURL:url] delegate:self]; self.imageConnection = conn; [conn release]; } //build up the incoming data in self.activeDownload with calls to didReceiveData... - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSLog(@"Finished downloading."); UIImage *image = [[UIImage alloc] initWithData:self.activeDownload]; self.theImageView.image = image; NSLog(@"Caching %@ for %d", self.theImageView.image, self.cacheIndex); [imageCache insertObject:image atIndex:self.cacheIndex]; NSLog(@"Cache now has %d items", [imageCache count]); [image release]; } My index is getting through okay, I can see that by my NSLog output. But even after my insertObject: atIndex: call, [imageCache count] never leaves zero. This is my first foray into static variables, so I presume I'm doing something wrong. (The above code is heavily pruned to show only the main thing of what's going on, so bear that in mind as you look at it.)

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  • XmlHttpRequest in a bookmarklet returns empty responseText on GET?

    - by David Eyk
    I'm trying to build a javascript bookmarklet for a special URL shortening service we've built at http://esv.to for shortening scripture references (i.e. "Matthew 5" becomes "http://esv.to/Mt5". The bookmarklet is supposed to do a GET request to http://api.esv.to/Matthew+5, which returns a text/plain response of http://esv.to/Mt5. The code for the bookmarklet itself looks like this (expanded for readability): var body = document.getElementsByTagName('body')[0], script = document.createElement('script'); script.type = 'text/javascript'; script.src = 'http://esv.to/media/js/bookmarklet.js'; body.appendChild(script); void(0); The code from http://esv.to/media/js/bookmarklet.js looks like this: (function() { function shorten(ref, callback) { var url = "http://esv.to/api/" + escape(ref); var req = new XMLHttpRequest(); req.onreadystatechange = function shortenIt() { if ( this.readyState == 4 && this.status == 200 ) { callback(req.responseText); }; }; req.open( "GET", url ); req.send(); }; function doBookmarklet() { var ref = prompt("Enter a scripture reference or keyword search to link to:", "") shorten(ref, function (short) { prompt("Here is your shortened ESV URL:", short); }); }; doBookmarklet(); })(); When called from http://esv.to itself, the bookmarklet works correctly. But when used on another page, it does not. The strange thing is, when I watch the request from Firebug, the response is 200 OK, the browser downloads 17 bytes (the length of the returned string), but the response body is empty! No error is thrown, just an empty responseText on the XmlHttpRequest object. Now, according to http://stackoverflow.com/questions/664689/ajax-call-from-bookmarklet, GET shouldn't violate the same origin policy. Is this a bug? Is there a workaround?

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  • CoreData : store images to DB or not?

    - by Meko
    Hi.I am making an app that it takes photos from web site for some Username and shows it on UITable with username then when clicking user name it shows photos for this user and then clicking to name of photo it shows full screen photo. My question is I am using NSData to get photos from internet.Am I have to save also those data to CoreDAta? I am using like when pressing name of user it again creates NSData and downloads photos from internet and shows them on UTable. And it takes time. What is good approach? and How can save this images to CoreDAta? I am using this method NSData *imageData=[flickr dataForPhotoID:firstPhoto.id fromFarm:firstPhoto.farm onServer:firstPhoto.server withSecret:firstPhoto.secret inFormat: FlickrFetcherPhotoFormatSquare]; and here definition of dataForPtohoID method - (NSData *)dataForPhotoID:(NSString *)photoID fromFarm:(NSString *)farm onServer:(NSString *)server withSecret:(NSString *)secret inFormat:(FlickrFetcherPhotoFormat)format { #if TEST_HIGH_NETWORK_LATENCY sleep(1); #endif NSString *formatString; switch (format) { case FlickrFetcherPhotoFormatSquare: formatString = @"s"; break; case FlickrFetcherPhotoFormatLarge: formatString = @"b"; break; } NSString *photoURLString = [NSString stringWithFormat:@"http://farm%@.static.flickr.com/%@/%@_%@_%@.jpg", farm, server, photoID, secret, formatString]; NSURL *url = [NSURL URLWithString:photoURLString]; return [NSData dataWithContentsOfURL:url]; }

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  • Register filetype with the browser?

    - by Lord.Quackstar
    In Android, I am trying to make it so that the user downloads a font from the browser, and I am able to view the font when downloaded. After multiple issues, I still have one lingering one: Registering the filetype with the browser. When trying to download with the Emulator (2.1-u1), I get "Cannot download. The content is not supported on this phone". Okay, so maybe its my manifest file. Updated with this: <activity android:name=".MainActivity" android:label="MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> <catagory android:name="android.intent.category.BROWSABLE"/> <data android:scheme="http"/> <data android:scheme="https"/> <data android:scheme="ftp"/> <data android:host="*"/> <data android:mimeType="*/*"/> <data android:pathPattern=".*zip"/> </intent-filter> </activity> Went back to the browser, and fails again. Restart the Emulator, still fails. Note that I got this format from posts here. Any suggestions on what to do?

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  • Python halts while iteratively processing my 1GB csv file

    - by Dan
    I have two files: metadata.csv: contains an ID, followed by vendor name, a filename, etc hashes.csv: contains an ID, followed by a hash The ID is essentially a foreign key of sorts, relating file metadata to its hash. I wrote this script to quickly extract out all hashes associated with a particular vendor. It craps out before it finishes processing hashes.csv stored_ids = [] # this file is about 1 MB entries = csv.reader(open(options.entries, "rb")) for row in entries: # row[2] is the vendor if row[2] == options.vendor: # row[0] is the ID stored_ids.append(row[0]) # this file is 1 GB hashes = open(options.hashes, "rb") # I iteratively read the file here, # just in case the csv module doesn't do this. for line in hashes: # not sure if stored_ids contains strings or ints here... # this probably isn't the problem though if line.split(",")[0] in stored_ids: # if its one of the IDs we're looking for, print the file and hash to STDOUT print "%s,%s" % (line.split(",")[2], line.split(",")[4]) hashes.close() This script gets about 2000 entries through hashes.csv before it halts. What am I doing wrong? I thought I was processing it line by line. ps. the csv files are the popular HashKeeper format and the files I am parsing are the NSRL hash sets. http://www.nsrl.nist.gov/Downloads.htm#converter UPDATE: working solution below. Thanks everyone who commented! entries = csv.reader(open(options.entries, "rb")) stored_ids = dict((row[0],1) for row in entries if row[2] == options.vendor) hashes = csv.reader(open(options.hashes, "rb")) matches = dict((row[2], row[4]) for row in hashes if row[0] in stored_ids) for k, v in matches.iteritems(): print "%s,%s" % (k, v)

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  • Publishing artifacts with sources on archiva

    - by Palimondo
    At work I'm dipping my toes in managing project dependencies with maven. We use Apache Archiva (1.2.1) as a local repository and proxy. I'm adding artifact for open source project, that is not published on any public repository. I've learned that to publish the sources I should use the Classifier field on Upload artifact page. The sources are then listed alongside the jar and pom when I browse the repository. But when I update my maven dependencies I get only the jar and pom from the repository. I noticed that sources are also missing when the archiva proxies for me the downloads from other public repositories. I didn't find any configuration options in Archiva's admin pages to serve the sources... What am I missing? Update: I was missing the fact that artifact sources have to be downloaded manually. I.e. the maven client has to request them, which is controlled by command line option -DdownloadSources=true. Maven Integration for Eclipse has a preference setting to always download them as described in Resolving artifact sources. Archiva then serves the sources for local artifacts or proxies the request to remote repositories and caches the sources for future requests.

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  • Why is curl in Ruby slower than command-line curl?

    - by Stiivi
    I am trying to download more than 1m pages (URLs ending by a sequence ID). I have implemented kind of multi-purpose download manager with configurable number of download threads and one processing thread. The downloader downloads files in batches: curl = Curl::Easy.new batch_urls.each { |url_info| curl.url = url_info[:url] curl.perform file = File.new(url_info[:file], "wb") file << curl.body_str file.close # ... some other stuff } I have tried to download 8000 pages sample. When using the code above, I get 1000 in 2 minutes. When I write all URLs into a file and do in shell: cat list | xargs curl I gen all 8000 pages in two minutes. Thing is, I need it to have it in ruby code, because there is other monitoring and processing code. I have tried: Curl::Multi - it is somehow faster, but misses 50-90% of files (does not download them and gives no reason/code) multiple threads with Curl::Easy - around the same speed as single threaded Why is reused Curl::Easy slower than subsequent command line curl calls and how can I make it faster? Or what I am doing wrong? I would prefer to fix my download manager code than to make downloading for this case in a different way. Before this, I was calling command-line wget which I provided with a file with list of URLs. Howerver, not all errors were handled, also it was not possible to specify output file for each URL separately when using URL list. Now it seems to me that the best way would be to use multiple threads with system call to 'curl' command. But why when I can use directly Curl in Ruby? Code for the download manager is here, if it might help: Download Manager (I have played with timeouts, from not-setting it to various values, it did not seem help) Any hints appreciated.

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  • Ivy failed to resolve dependency : What to check, what to do ?

    - by fardon57
    Hi everyone, I'm using Ivy to resolve dependency in my very small project. It's the first time I'm doing that and it's more to learn as my project is very small. I had a problem 5 minutes ago, when trying to download log4j. My configuration is very basic, I have an ant task : <target name="resolve" description="--> retrieve dependencies with ivy"> <ivy:retrieve/> </target> and my Ivy.xml file is like this : <dependency org="javax.servlet" name="servlet-api" rev="2.5" /> <dependency org="log4j" name="log4j" rev="1.2.15" /> </dependencies> The problem is seems to happen when ivy tries to download jms 1.1 (I suppose it's needed for log4j) as I can see in the console : : ::::::::::::::::::::::::::::::::::::::::::::: [ivy:retrieve] :: FAILED DOWNLOADS :: [ivy:retrieve] :: ^ see resolution messages for details ^ :: [ivy:retrieve] :::::::::::::::::::::::::::::::::::::::::::::: [ivy:retrieve] :: javax.jms#jms;1.1!jms.jar [ivy:retrieve] :: com.sun.jdmk#jmxtools;1.2.1!jmxtools.jar [ivy:retrieve] :: com.sun.jmx#jmxri;1.2.1!jmxri.jar [ivy:retrieve] :::::::::::::::::::::::::::::::::::::::::::::: Is there anything I can do ? Thanks a lot guys. F

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  • Inserting script from jQuery / Javascript

    - by Colby77
    Hi, I'm trying to insert reCaptcha code into my page from jQuery, but it doesn't work. Here is my code: $("#button").click(function() { $("#loginBox").html($.getRecaptcha()); }) When I try the following, my code doesn't even run. I think it's trying to execute instead of rendering it. $.getRecaptcha = function(){ return '<script type="text/javascript"' + 'src="http://api.recaptcha.net/challenge?' + 'k=6Ld3iAsAAAAAAGyX8QT244GagPEpCDSD-96o4gEi"></script>'; } With the following, the code runs, but when I click to #button I get an empty, full white browser window. $.getRecaptcha = function(){ var captcha = $("<script>") .attr("type", "text/javascript") .attr("src", "http://api.recaptcha.net/challenge?k=6Ld3iAsAAAAAAGyX8QT244GagPEpCDSD-96o4gEi"); return captcha; } I don't want to insert reCaptcha code into my html from the beginning, because it downloads the reCaptcha content from the reCaptcha server even if my users don't want to use it. I could set the visibility of the container that holds the reCaptcha to invisible (display: none;), but it will dowload the content irrespectively of it. I can insert the "noScript" code that reCaptcha gives us, but it doesn't work either, because it can spot that the browser allow javascript but I use noScript. Any suggestions? (I know I put my public reCaptcha key into the code, but it is just for testing purposes, and you could get it from my html or javascript code anyway)

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  • Update a PDF to include an encrypted, hidden, unique identifier?

    - by Dave Jarvis
    Background The idea is this: Person provides contact information for online book purchase Book, as a PDF, is marked with a unique hash Person downloads book PDF passwords are annoying and extremely easy to circumvent. The ideal process would be something like: Generate hash based on contact information Store contact information and hash in database Acquire book lock Update an "include" file with hash text Generate book as PDF (using pdflatex) Apply hash to book Release book lock Send email with book download link Technologies The following technologies can be used (other programming languages are possible, but libraries will likely be limited to those supplied by the host): C, Java, PHP LaTeX files PDF files Linux Question What programming techniques (or open source software) should I investigate to: Embed a unique hash (or other mark) to a PDF Create a collusion-attack resistant mark Develop a non-fragile (e.g., PDF -> EPS -> PDF still contains the mark) solution Research I have looked at the following possibilities: Steganography Natural Language Processing (NLP) Convert blank pages in PDF to images; mark those images; reassemble PDF LaTeX watermark package ImageMagick Steganograhy requires keeping a master copy of the images, and I'm not sure if the watermark would survive PDF -> EPS -> PDF, or other types of conversion. LaTeX creates an image cache, so any steganographic process would have to intercept that process somehow. NLP introduces grammatical errors. Inserting blank pages as images is immediately suspect; it is easy to replace suspicious blank pages. The LaTeX watermark package draws visible marks. ImageMagick draws visible marks. What other solutions are possible? Related Links http://www.tcpdf.org/ invisible watermarks in images Thank you!

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