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  • Image container instead of event object in image load event handler

    - by avok00
    I stumbled upon a very strange thing. In FF 3.6 (not tested others yet) I add onload handler to an image like this: imgRef.addEventListener("load", activateLink, false); When load event fires, in activateLink(evt) the evt paramater is not an event, but the "a" tag that contains the image. Why is this? function activateLink(evt) { // evt turns out to be a refference to <a> tag (HTMLAnchorElement) that contains the image. // Actually two of them. Both dynamically added with addElement. } I remembered another fact that may be relevant. I have multiple images with the same src that all have registered this same event handler activateLink. Could this be the problem?

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  • Image links work but show "broken image" in IE.

    - by Path
    I have a problem. I have made some image files for a menu. They work fine in Firefox, but IE (8, haven't tested with others) and Chrome show a broken image.. Image, on top. Even though the images work. The page is here: http://www.silkeborgmuseum.dk/udvikling/index.php This is a very old page of mine but I need to make it work. I have tried searching google and stackoverflow, but have not so far been able to find anyone else having this problem or what is causing it. Can anyone help? As a parting comment, I will say that I have only been developing websites for a few months, but wow, i already hate IE with a fiery passion.

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  • Allow anonymous upload for Vsftpd?

    - by user15318
    I need a basic FTP server on Linux (CentOS 5.5) without any security measure, since the server and the clients are located on a test LAN, not connected to the rest of the network, which itself uses non-routable IP's behind a NAT firewall with no incoming access to FTP. Some people recommend Vsftpd over PureFTPd or ProFTPd. No matter what I try, I can't get it to allow an anonymous user (ie. logging as "ftp" or "anonymous" and typing any string as password) to upload a file: # yum install vsftpd # mkdir /var/ftp/pub/upload # cat vsftpd.conf listen=YES anonymous_enable=YES local_enable=YES write_enable=YES xferlog_file=YES #anonymous users are restricted (chrooted) to anon_root #directory was created by root, hence owned by root.root anon_root=/var/ftp/pub/incoming anon_upload_enable=YES anon_mkdir_write_enable=YES #chroot_local_user=NO #chroot_list_enable=YES #chroot_list_file=/etc/vsftpd.chroot_list chown_uploads=YES When I log on from a client, here's what I get: 500 OOPS: cannot change directory:/var/ftp/pub/incoming I also tried "# chmod 777 /var/ftp/incoming/", but get the same error. Does someone know how to configure Vsftpd with minimum security? Thank you. Edit: SELinux is disabled and here are the file permissions: # cat /etc/sysconfig/selinux SELINUX=disabled SELINUXTYPE=targeted SETLOCALDEFS=0 # sestatus SELinux status: disabled # getenforce Disabled # grep ftp /etc/passwd ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin # ll /var/ drwxr-xr-x 4 root root 4096 Mar 14 10:53 ftp # ll /var/ftp/ drwxrwxrwx 2 ftp ftp 4096 Mar 14 10:53 incoming drwxr-xr-x 3 ftp ftp 4096 Mar 14 11:29 pub Edit: latest vsftpd.conf: listen=YES local_enable=YES write_enable=YES xferlog_file=YES #anonymous users are restricted (chrooted) to anon_root anonymous_enable=YES anon_root=/var/ftp/pub/incoming anon_upload_enable=YES anon_mkdir_write_enable=YES #500 OOPS: bad bool value in config file for: chown_uploads chown_uploads=YES chown_username=ftp Edit: with trailing space removed from "chown_uploads", err 500 is solved, but anonymous still doesn't work: client> ./ftp server Connected to server. 220 (vsFTPd 2.0.5) Name (server:root): ftp 331 Please specify the password. Password: 500 OOPS: cannot change directory:/var/ftp/pub/incoming Login failed. ftp> bye With user "ftp" listed in /etc/passwd with home directory set to "/var/ftp" and access rights to /var/ftp set to "drwxr-xr-x" and /var/ftp/incoming to "drwxrwxrwx"...could it be due to PAM maybe? I don't find any FTP log file in /var/log to investigate. Edit: Here's a working configuration to let ftp/anonymous connect and upload files to /var/ftp: listen=YES anonymous_enable=YES write_enable=YES anon_upload_enable=YES anon_mkdir_write_enable=YES

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  • www-data can upload a file but cant move it after the upload action

    - by user70058
    I am currently running Apache and PHP on Ubuntu. I have a page where a user is supposed to upload a profile image. The action on the backend is supposed to work like this: Upload file to user directory -- WORKS! Refer to the uploaded file and create a thumbnail in directory thumbs -- DOES NOT WORK www-data has write access to directory thumbs. My guess is that www-data for some reason does not have proper access to the file that was uploaded. UPLOADED FILE PERMISSIONS -rw-r--r-- 1 www-data www-data 47057 Feb 8 23:24 0181c6e0973eb19cb0d98521a6fe1d9e71cd6daa.jpg THUMBS DIRECTORY PERMISSIONS drwxr-sr-x 2 www-data www-data 4096 Feb 8 23:23 thumbs Im at lost here. I'm new to Ubuntu as well. Any help would be greatly appreciated!

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  • Upload from URL to FTP server

    - by Bibhas
    Ok, I have a tar.gz file somewhere in a web server. The link looks like http://abcd.com/abcd.tar.gz .. And I have an FTP server running somewhere. Now, to upload the file to the FTP server, Typically I need to download it from the web server and then upload it again to the FTP server. But I'm wondering if there is anyway, I can directly transfer the file to the FTP server over the web. Not by downloading and uploading again. Any help?

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  • Vista Home Premium won't upload

    - by longhairedsi
    Hi, I have a sony vaio laptop(VGN-FW31J) running windows Vista Home Premium . I've had it over a year and file upload in a browser has never worked on any website in any browser(IE, Firefox, Chrome). I can select a file and the upload starts running but I always get a timeout. Sometimes it has worked once out of many attempts but only if the file is very small( < 50k). FTP does work. I've tried the following: Disabling anti virus Disabling firewall Can anyone help me here? i'm wondering if this is a vista problem or a vaio problem. Cheers

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  • Improving Performance on this Image Creation function

    - by Abs
    Hello all, I am making use of GD2 and the image functions to take in a string and then convert that into an image using different fonts at different sizes. The function I use is below. Currently, its pretty quick but not quick enough. The function gets called about 20 times per user and the images generated are always new ones (different) so caching isn't going to help! I was hoping to get some ideas on how to make this function faster. Maybe supply more RAM to the script running? Anything else that is specific to this PHP function? Anything else that I can do to tweak performance of this function? function generate_image($save_path, $text, $font_path, $font_size){ $font = $font_path; /* * I have simplifed the line below, its actually a function that works out the size of the box * that is need for each image as the image size is different based on font type, font size etc */ $measure = array('width' => 300, 'height'=> 120); if($measure['width'] > 900){ $measure['width'] = 900; } $im = imagecreatetruecolor($measure['width'], $measure['height']); $white = imagecolorallocate($im, 255, 255, 255); $black = imagecolorallocate($im, 0, 0, 0); imagefilledrectangle($im, 0, 0, $measure['width'], $measure['height'], $white); imagettftext($im, $font_size, 0, $measure['left'], $measure['top'], $black, $font, ' '.$text); if(imagepng($im, $save_path)){ $status = true; }else{ $status = false; } imagedestroy($im); return $status; } Thanks all for any help

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  • Fastest Algorithm to scale down 32Bit RGB IMAGE.

    - by Sunny
    which algorithm to use to scale down 32Bit RGB IMAGE to custom resolution? Algorithm should average pixels. for example If I have 100x100 image and I want new Image of size 20x50. Avg of first five pixels of first source row will give first pixel of dest, And avg of first two pixels of first source column will give first dest column pixel. Currently what I do is first scale down in X resolution, and after that I scale down in Y resolution. I need one temp buffer in this method. Is there any optimized method that you know?

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  • Image Application in WPF and Perfomance.

    - by Harsha
    Hello All, I am planning to build Image processing application using WPF. Brightness /Contrast and Histogram are main operation of this application. I have downloaded the application " Foundations: Bitmaps and Pixel Bits" from http://msdn.microsoft.com/en-us/magazine/cc534995.aspx . But when I tried to open the images which are more than 1200x1600, It is very slow. How to increase the performance. Is any one worked on Image processing in WPF. Please suggest me how to solve this perfomance issue in WPF for image(more than 1600x1200) operation. Thanks you, Harsha

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  • Serverside image processing

    - by spol
    I am designing a web application that does server side image processing in real time. Processing tasks include applying different effects like grayscale, blur, oil paint, pencil sketch etc on images in various formats. I want to build it using java/servlets which I am already familiar with. I found 3 options, 1) Use pure java imaging libraries like java.awt or http://www.jhlabs.com/ip/index.html 2) Use command line tools like Gimp/ImageMagick 3) Use c,c++ image libraries that have java bindings. I don't know which of the above options is good keeping the performance in mind. It looks like option 2) and 3) are good performance wise, but I want to be sure before I rule out 1). I have also heard gimp cannot be run using command line unless gtk or xwindows is already installed on the server. Will there be any such problems with 2) or 3) while running them server side? Also please suggest any good image processing libraries for this purpose.

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  • Image Uploading - security issues

    - by TenaciousImpy
    Hi, I'm developing an ASP.NET Web app and would like the user to be able to either upload an image from their local system, or pass in a URL to an image. The image can either be a JPG or PNG. What security issues should I be concerned about doing this? I've seen various ways of embedding code within JPG files. Are there any methods in C# (or external libraries) which can confirm that a file is a JPG/PNG, otherwise throw an error? At the very least, I'm making the directory which holds uploaded images non-browsable and putting a max size limit of 1mb, but I'd like to implement further checks. Thanks for any advice.

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  • Adobe Air upload progress without FileReference

    - by anhtuannd
    I'm deploying a small application with Adobe Air. My application will do batch upload from filepath which stored in a text file. For example, in a text file name "list.txt", there is a string "C:\myfiles\IMG_0001.JPG". Now I want to upload this image file, keep tracking of upload progress :-< I want to use FileReference to get the upload progress, but I don't know how to import from file's path. I also wonder how to use FileReference to upload this file without prompting a dialog for user to select file. Thank you so much :)

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  • Wrong image dimensions when it's dynamically loaded on a page the 1st time

    - by Nikita Barsukov
    I have the following piece of Javascript code on my web-page var central_image = document.createElement("img") central_image.setAttribute("src", imgs[curr_image_no - 1]); central_image.setAttribute("name", "jpeg"); document.getElementById("photo").appendChild(central_image); central_image.onload = getDimensions(); //function that alerts image dimensions Now, when the central_image is loaded for the 1st time in Firefox, its height always equals to 0. In IE its dimensions are 28 x 30 pixels. When I reload image, its dimensions are OK in both browsers. I guess the problem is that function getDimensions() starts before image was loaded completely. How to change that?

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  • php + upload.class + not overwriting the image

    - by Paulo
    Hi, i am trying to upload a file with upload.class and i need to overwrite the file when the user upload a new one. But instead of overwriting, he is putting photo_01, photo_02, etc... The code: $foto = new Upload($_FILES['photo']); $fotot = new Upload($_FILES['photo']); $fotot->image_resize = true; $fotot->image_y = 110; $fotot->image_x = 110; $foto->file_new_name_body = "photo"; $fotot->file_new_name_body = "photo"; $foto->file_ovewrite = true; $fotot->file_ovewrite = true; $fotot->Process("{$dir_fotos}thumbs/"); $foto->Process("{$dir_fotos}"); Somebody has already passed by this or has a solution??? notice that i'm using file_ovewrite = true; thanks

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  • Background upload in PHP

    - by Robijntje007
    I am working with a form that allows me to upload files via a local folder and FTP. So I want to move files over ftp (which already works) Because of performance reasons I chose this process to run in the background so I use nfcftpput (linux) In CLI the following command works perfectly: ncftpput-b-u name -p password -P 1980 127.0.0.1 /upload/ /home/Downloads/upload.zip (Knowing that the b-parameter triggers background process) But if I run it via PHP it does not work (without the-b parameter it does) PHP code: $cmd = "ncftpput -b -u name -p password -P 1980 127.0.0.1 /upload/ /home/Downloads/upload.zip"; $return = exec($cmd);

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  • [PHP] background upload

    - by Robijntje007
    I am working with a form that allows me to upload files via a local folder and FTP. So I want to move files over ftp (which already works) Because of performance reasons I chose this process to run in the background so I use nfcftpput (linux) In CLI the following command works perfectly: ncftpput-b-u name -p password -P 1980 127.0.0.1 /upload/ /home/Downloads/upload.zip (Knowing that the b-parameter triggers background process) But if I run it via PHP it does not work (without the-b parameter it does) PHP code: $cmd = "ncftpput -b -u name -p password -P 1980 127.0.0.1 /upload/ /home/Downloads/upload.zip"; $return = exec($cmd);

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