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  • Is giving read permissions on /etc/shadow to apache user a wise decision from security point of view?

    - by Czar
    I have to use PAM authentication for DAV SVN, but when everything is configured as specified in mod_auth_pam documentation, authentication does not work. After some research I realized, that for this to work, httpd should be running under root user (which I don't like and won't implement) or apache user (under which httpd is running by default) should have permissions to read /etc/shadow file. So there is a pair of questions connected to each other which I want to ask: Is giving this permition to apache user a wise decision from security point of view? If answer to the first question is "yes", what is the correct way to do so? For now I've done following: groupadd shadow usermod -G shadow apache chmod g+r /etc/shadow Another way I can come up with is using acl: setfacl -m u:apache:r /etc/shadow Note: OS is Fedora 14 x86_64 (kernel: 2.6.35.11) httpd v2.2.17 mod_auth_pam v1.1.1

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  • In a virtual machine monitor such as VMware’s ESXi Server, how are shadow page tables implemented?

    - by ali01
    My understanding is that VMMs such as VMware's ESXi Server maintain shadow page tables to map virtual page addresses of guest operating systems directly to machine (hardware) addresses. I've been told that shadow page tables are then used directly by the processor's paging hardware to allow memory access in the VM to execute without translation overhead. I would like to understand a bit more about how the shadow page table mechanism works in a VMM. Is my high level understanding above correct? What kind of data structures are used in the implementation of shadow page tables? What is the flow of control from the guest operating system all the way to the hardware? How are memory access translations made for a guest operating system before its shadow page table is populated? How is page sharing supported? Short of straight up reading the source code of an open source VMM, what resources can I look into to learn more about hardware virtualization?

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  • is box-shadow (CSS3) really not ready to use? (according to "CAN I USE")

    - by mechdeveloper
    I have a problem that I want you to help me, I am currently making a website, I am building that website on HTML5 and CSS3 technology, every feature I'd like to use I check it first in "CAN I USE", the technology I use most is box-shadow, and I already made some great things with it but, I have a doubt about the percentage of browser that don't support that technology, the percentage of browser that do not support box-shadow is around 17.12%, and if you see the conclusions (show options = other options = show conclusions) they say that that feature isn't ready yet because they are "Waiting for Opera Mini 5.0-6.0 to expire", I personally think that the best that we can do in order to make people update their browsers is not support older browser, but ... am I right thinking like this? will I have bad consecuences if I don't support older browsers? is worth to work twice just to support older browsers? should I still working with box-shadow?

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  • OpenGL lighting with dynamic geometry

    - by Tank
    I'm currently thinking hard about how to implement lighting in my game. The geometry is quite dynamic (fixed 3D grid with custom geometry in each cell) and needs some light to get more depth and in general look nicer. A scene in my game always contains sunlight and local light sources like lamps (point lights). One can move underground, so sunlight must be able to illuminate as far as it can get. Here's a render of a typical situation: The lamp is positioned behind the wall to the top, and in the hollow cube there's a hole in the back, so that light can shine through. (I don't want soft shadows, this is just for illustration) While spending the whole day searching through Google, I stumbled on some keywords like deferred rendering, forward rendering, ambient occlusion, screen space ambient occlusion etc. Some articles/tutorials even refer to "normal shading", but to be honest I don't really have an idea to even do simple shading. OpenGL of course has a fixed lighting pipeline with 8 possible light sources. However they just illuminate all vertices without checking for occluding geometry. I'd be very thankful if someone could give me some pointers into the right direction. I don't need complete solutions or similar, just good sources with information understandable for someone with nearly no lighting experience (preferably with OpenGL).

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  • Fox Pro Database File Locked by Shadow Copy?

    - by leeand00
    I'm using Process Explorer to determine what process has a lock on a particular Fox Pro Database file in windows. It's telling me that System has a lock on it. When I go to kill the "System" process (which if you ask me doesn't sound like a very good idea), it asks me if I'm sure I want to kill the System process. I haven't answered yes yet. It's a company server, and I'm thinking that maybe my only option is to tell everybody to get off of it and reboot. Do I have any other options?

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  • How can I "shadow" the filesystem on Linux?

    - by happy_emi
    On a Linux environment sometimes I need to run a script as root which will add/modify serveral files on my fs. Basically I'd like to know exactly which files are modified and how WITHOUT opening the script and trying to guess the code. I was thinking about using something like unionfs: the main fs would be accessible in readonly mode and all changes are written on a file used as a partition and "mounted" in write mode. Are there other ways to achieve the same goal (i.e. other than unionfs)?

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  • Jquery add drop shadow to layover

    - by Thomas
    I am using this layover plugin to display content: http://jquery.com/demo/grey/ I know there must be a simple way to add a drop shadow border to the layover, similar to: http://fancybox.net/ but I can't figure out what the best method would be. Any suggestions?

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  • Spark skins : blue drop shadow on focus

    - by y_nk
    Hello, I'm currently experimenting flex 4 skinning. I successfully skinned most of the components i need for my application, but i can't find a way to avoid this damn blue drop shadow which is displayed when u'r focused on a textfield or a combobox. If anyone has a hint on this. Thanks !

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  • A way to remove selected LineShape shadow effect?

    - by serhio
    Is there a way to remove the LineShape shadow effect when selecting the lineShape? I tried Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs) Dim g As Graphics = e.Graphics g.SmoothingMode = SmoothingMode.AntiAlias Dim oldmode As SmoothingMode = g.SmoothingMode g.DrawLine(_Pen, X1, Y1, X2, Y2) g.SmoothingMode = oldmode End Sub but finally, this have some back effects on invalidation: when moving (in a panel) the line leave traces - does not invalidate properly.

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  • Android - shadow on text?

    - by gazeebo
    Hi all, I am wondering how to add shadow on text in android? I have the following code which is applied on a bitmap and I wanted to be shadowed... paint.setColor(Color.BLACK); paint.setTextSize(55); paint.setFakeBoldText(false); paint.setShadowLayer(1, 0, 0, Color.BLACK); //This only shadows my whole view... Thankful for any tips!

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  • MVC3 Custom view engine

    - by eth0
    I have a custom View Engine that derives from WebFormViewEngine. There's a lot of stuff going on in here, mostly caching. I want to be able to use WebFormViewEngine AND RazorViewEngine at the same time, is this possible? Ideally I'd like to do; ViewEngines.Add(new MyViewEngine<WebFormsViewEngine>()); ViewEngines.Add(new MyViewEngine<RazorViewEngine>()); if a .ascx/.aspx/.master file exists then use WebForms, otherwise use Razor is a .cshtml file exists. EDIT: I should of worded my question better. As my custom view engine derives from WebFormViewEngine it obviously uses WebForms, I can't derive from two classes. I can derive from RazorViewEngine but then I'll loose WebForms. I can duplicate my code entirely, derive from RazorViewEngine and edit the views file extensions, etc. but as I said I've got a lot of custom code in my view engine and would be duplicating hundreds of lines. WebFormViewEngine and RazorViewEngine derive from BuildManagerViewEngine which in turn implements IViewEngine. The problem with that is I have to implement methods CreatePartialView() and CreateView() but how would I know what to return (WebForms/Razor?) using generics?

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  • TSM Backup Fails with VSS

    - by user176320
    Since we rebuilt our servers to windows servers 2008 x64 r2 we have perpetual problems with scheduled backup (shadow copy). In the Application event log, the following events are logged on both nodes: The description for Event ID 4112 from source TsmVssPlugin cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer. If the event originated on another computer, the display information had to be saved with the event. The following information was included with the event: VSS processing encountered error 'VSS_E_UNEXPECTED_PROVIDER_ERROR' in the Volume Shadow Copy API 'AddToSnapshotSet'. For more information, see the IBM Tivoli Storage Manager client error log. Re installing TSM didn't change anything and still logging same events. TSM Error log file shows following: ANS1327W The snapshot operation for 'C:' failed with error code: -1. ANS5250E An unexpected error was encountered. TSM function name : BaStartSnapshot TSM function : initializeSnapshotSet() failed, check Microsoft Application event log for VSS errors TSM return code : -1

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  • Is there a way to prevent password expiration when user has no password?

    - by Eric DANNIELOU
    Okay, we all care about security so users should change their passwords on a regular basis (who said passwords are like underwear?). On redhat and centos (5.x and 6.x), it's possible to make every real user password expires after 45 days, and warn them 7 days before. /etc/shadow entry then looks like : testuser:$6$m8VQ7BWU$b3UBovxC5b9p2UxLxyT0QKKgG1RoOHoap2CV7HviDJ03AUvcFTqB.yiV4Dn7Rj6LgCBsJ1.obQpaLVCx5.Sx90:15588:1:45:7::: It works very well and most users often change their passwords. Some users find it convenient not to use any password but ssh public key (and I'd like to encourage them). Then after 45 days they can't log in as they forgot their password and are asked to change it. Is there a way to prevent password expiration if and only if password is disabled? Setting testuser:!!:15588:1:45:7::: in /etc/shadow did not work : testuser is asked to change his password after 45 days. Of course, setting back password expiration to 99999 days works but : It requires extra work. Security auditors might not be happy. Is there a system wide parameter that would prompt the user to change expired password only if he really has one ?

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  • Shadow volume shader optimization (GLSL)

    - by Soubok
    I wondering if there is a way to optimize this vertex shader. This vertex shader projects (in the light direction) a vertex to the far plane if it is in the shadow. void main(void) { vec3 lightDir = (gl_ModelViewMatrix * gl_Vertex - gl_LightSource[0].position).xyz; // if the vertex is lit if ( dot(lightDir, gl_NormalMatrix * gl_Normal) < 0.01 ) { // don't move it gl_Position = ftransform(); } else { // move it far, is the light direction vec4 fin = gl_ProjectionMatrix * ( gl_ModelViewMatrix * gl_Vertex + vec4(normalize(lightDir) * 100000.0, 0.0) ); if ( fin.z > fin.w ) // if fin is behind the far plane fin.z = fin.w; // move to the far plane (needed for z-fail algo.) gl_Position = fin; } }

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  • How to apply text shadow to UITextView?

    - by mystify
    Actually I love UILabel. They're sweet. Now I had to go to UITextView because UILabel is not aligning text vertically to the top. Damn. One thing I really need is a text shadow. UILabel has it. UITextView seems to not have it. But I guess that guy just uses the same underlying UIKit NSString additions?? Maybe someone already has a solution for that problem? What would I overwrite?

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  • ASP.NET MVC, Web API, Razor : Microsoft prendra en compte les contributions externes pour ces produits open source

    ASP.NET MVC, Web API, Razor : Microsoft prendra en compte les contributions externes pour ces produits open source Microsoft vient d'annoncer qu'il allait publier sous licence open source Apache 2.0 le code source de Web Pages et ASP.NET Web API. Web Pages est la plateforme sur laquelle repose le nouveau moteur de vue Razor, la première version avait été publiée avec WebMatrix 1 et ASP.NET MVC 3. Web Pages est actuellement disponible en version 2 beta. ASP.NET Web API, quant à elle, permet aux développeurs d'exposer leurs applications, données et services sur le web directement à travers HTTP. La technologie avait été introduite avec ASP.NET MVC 4 beta. Le passage à l'op...

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  • Issue with TagBuilder.MergeAttribute for parameter null

    - by The Yur
    I would like to use Razor's feature not to produce attribute output inside a tag in case when attribute's value is null. So when Razor meets <div class="@var" where @var is null, the output will be mere <div. I've created some Html extension method to write text inside tag. The method takes header text, level (h1..h6), and html attributes as simple object. The code is: public static MvcHtmlString WriteHeader(this HtmlHelper html, string s, int? hLevel = 1, object htmlAttributes = null) { if ((hLevel == null) || (hLevel < 1 || hLevel > 4) || (s.IsNullOrWhiteSpace())) return new MvcHtmlString(""); string cssClass = null, cssId = null, cssStyle = null; if (htmlAttributes != null) { var T = htmlAttributes.GetType(); var propInfo = T.GetProperty("class"); var o = propInfo.GetValue(htmlAttributes); cssClass = o.ToString().IsNullOrWhiteSpace() ? null : o.ToString(); propInfo = T.GetProperty("id"); o = propInfo.GetValue(htmlAttributes); cssId = o.ToString().IsNullOrWhiteSpace() ? null : o.ToString(); propInfo = T.GetProperty("style"); o = propInfo.GetValue(htmlAttributes); cssStyle = o.ToString().IsNullOrWhiteSpace() ? null : o.ToString(); } var hTag = new TagBuilder("h" + hLevel); hTag.MergeAttribute("id", cssId); hTag.MergeAttribute("class", cssClass); hTag.MergeAttribute("style", cssStyle); hTag.InnerHtml = s; return new MvcHtmlString(hTag.ToString()); } I found that in spite of null values for "class" and "style" attributes TagBuilder still puts them as empty strings, like <h1 class="" style="" But for id attribute it surprisingly works, so when id's value is null, there is no id attribute in tag. My question - is such behavior something that should actually happen? How can I achieve absent attributes with null values using TagBuilder? I tried this in VS2013, MVC 5.

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  • Some questions about OpenGL

    - by subSeven
    Hello! I want to ask what is the easiest way to make shadow and light volume ? How can I bring to scene more realism? Do you know any nice tricks ? I hear that to make shadow i must use stencil buffer, but I don't know how:/ I can't find any super simple example how to make it.

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  • ServiceStack razor default page

    - by Tom
    Say I have 2 pages /NotADefault.cshtml /Views/Default.cshtml Question 1. Now I run it, page A always gets called implicitly as start-up default page no matter what I name it. Page B will only be called when I explicitly call localhost/View/Default. How do I make page B (the one in View folder) my default page? Question 2. I also have NotADefaultService.cs and DefaultService.cs. I give each page a Service class at the back. However, when page A is called NotADefaultService.cs never gets called. Only DefaultService.cs gets called when page B is called... My observation is that only the pages in the View folder will get their back-end service class working. Outside of View folder it doesn't work. Combining Q1 and Q2. How do I: Option 1. get the backend service class working under / root outside "View" folder? OR Option 2. appoint /View/Default.schtml as my default at start-up where the service class can be hit?

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  • how to pass parameter to partial view in MVC4 razor

    - by user2139492
    In my asp.net mvc 4 application i want to pass a parameter to partial view,however the parameter we want to pass is coming from javascript code Below is the code <script> var TestId; $(document).ready(function () { // Send an AJAX request $.getJSON("/api//GetFun?Id="[email protected], function (data) { TestId= data.Id //i am getting the id here which i need to pass in partial view } 1)........... }); </script> html code: <div id="tab1" > 2).... @{ Html.RenderAction("MyPartialView", "MyController", new { id = TestId });} </div> So let me know how can i pass the test id to my partial view :in HTML(2) code or in javascript (1)

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  • How to set up a centralized backup server with lots of offsite workstations, intermittent internet connectivity, and stubborn users?

    - by Zac B
    This might be an impossible question. Context: We have a bunch of computers across around 1000 users. We have a centralized office where 900 of the users work, most of the time. Most of the computers are laptops. They are very frequently coming on and off the network for hours at a time. Users often take their computers home and do lots of work from home. In addition, there are a handful of users who work elsewhere in the country, who are offline (no internet connection whatsoever) for more than half of the time they use their machines. All of the machines are Windows 7/XP. Problem: People are always losing data. One day someone accidentally deletes a bunch of files. The next day someone else installs a bad driver or tries to mess with something in system32 and needs a personal data backup/reinstall of Windows. Because of how many of our business operations are done without an internet connection, and how frequently computers come on- and offline, it's unfeasible to make users use network storage for all of their data. We tried giving them Dropboxes, and they stored their files elsewhere. We bought and deployed Altiris, and they uninstalled it and blamed us when they couldn't get files back that they accidentally deleted while they were offline and hadn't taken a backup in months. We tried teaching them backup best-practices, and using scheduled sync tools to upload things to the network drives, and they turned them off because they "looked like viruses". It doesn't help that many of these users are pretty high up in the business and are not amicable to any sort of "you need to do something regularly because we say so" solution. Question: Other than finding another job where IT is treated differently and users are willing to follow best practices, how would people recommend I implement a file backup solution that supports the following: Backs up to a centralized server over LAN or WAN whenever a network link becomes available, or on a schedule. Supports interrupted/resumed backups (and hopefully file-delta only backups), since connections to the network (WAN or LAN) are often slow and only open for half an hour or so. Supports relatively rapid, "I accidentally deleted the TPS reports! Oh no!" single-file recovery, ideally administered from the central backup server rather than the client PC. Supports local-to-local file delta backup on a schedule, so that users without a network connection for a few days can still retrieve accidental deletions or whatnot. Ideally, the local stored backups would be pushed up to the server whenever network link is available. Isn't configurable on the clients without certain credentials. Because the CFOs (who won't give up their admin rights on the domain) will disable it if they can. Backs up the entire hard drive. There are people who are self-righteous about storing things in C:\, or in the recycle bin, or in the C:\Windows dir (yes, I know). I'm fine integrating multiple products/solutions, or scripting different programs together myself (I'm a somewhat competent programmer), but I've been drawing a blank on where to start. Dropbox is folder-specific, Altiris doesn't cope with LAN outages or interrupted/resumed backups, Volume Shadow Copy is awesome for a local-to-local solution, but I don't know how to push days of stored shadow copies up to a server in a 2 hour window of network access. The company is fine with spending decent money on this, thousands (USD) on a server, and hundreds on clients, if necessary. I want to emphasize that this isn't a shopping list request. While I wish there was a program out there that did what I want, I've looked pretty hard, and not found anything that fits the bill. Instead, I'm hoping for ideas on where to start hacking things together from scratch/from different technologies to make something stable that works. Cheers!

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