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• function declaration

  - by robUK

  Hello, gcc 4.1.2 c89 I am reviewing some code and I have come across the following function. I have never seen a function declared like this before. There are no data types for the paraemeters. My best guess is that the function is using a list of data types separated by semi-colons. The return type seems to be returning a function with those parameters. However, the read function is not defined anywhere. What is the advantage and purpose of declaring a function like this? Many thanks for any advice, int my_read(fd, ptr, cnt) int fd; char *ptr; unsigned cnt; { printf("Read\n"); return(read(fd, ptr, cnt)); }

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• In C++, how can I make typedefs visible to every file in my project?

  - by user231536

  I have a typedef typedef unsigned int my_type; used in a file. I would like to make it visible across all my files, without putting it in a header file included by everything. I don't want to go the header file route because as it stands this will be the only declaration in the header file (and it seems unnecessary to add a file just for this). Is there a way to do this? If instead I had: typedef X my_type; where X was a class, would I need to include X.h everywhere and have the typedef at the end of X.h ?

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• C++ vector that *doesn't* initialize its members?

  - by Mehrdad

  I'm making a C++ wrapper for a piece of C code that returns a large array, and so I've tried to return the data in a vector<unsigned char>. Now the problem is, the data is on the order of megabytes, and vector unnecessarily initializes its storage, which essentially turns out to cut down my speed by half. How do I prevent this? Or, if it's not possible -- is there some other STL container that would avoid such needless work? Or must I end up making my own container? (Pre-C++11) Note: I'm passing the vector as my output buffer. I'm not copying the data from elsewhere.

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• PowerShell Script to Create PowerShell Profile

  - by Brian Jackett

  Utilizing a PowerShell profile can help any PowerShell user save time getting up and running with their work.  For those unfamiliar a PowerShell profile is a file you can store any PowerShell commands that you want to run when you fire up a PowerShell console (or ISE.)  In my typical profiles (example here) I load assemblies (like SharePoint 2007 DLL), set aliases, set environment variable values (such as max history), and perform other general customizations to make my work easier.  Below is a sample script that will check to see if a PowerShell profile (Console or ISE) exists and create it if not found.  The .ps1 script file version can also be downloaded from my SkyDrive here. Note: if downloading the .ps1 file, be sure you have enabled unsigned scripts to run on your machine as I have not signed mine.   $folderExists = test-path -path $Env:UserProfile\Documents\WindowsPowerShell if($folderExists -eq $false) { new-item -type directory -path $Env:UserProfile\Documents\WindowsPowerShell > $null echo "Containing folder for profile created at: $Env:UserProfile\Documents\WindowsPowerShell" }   $profileExists = test-path -path $profile if($profileExists -eq $false) { new-item -type file -path $profile > $null echo "Profile file created at: $profile" }     A few things to note while going through the above script. $Env:UserProfile represents the personal user folder (c:\documents and settings…. on older OSes like XP and c:\Users… on Win 7) so it adapts to whichever OS you are running but was tested against Windows 7 and Windows Server 2008 R2. “ > $null” sends the command to a null stream.  Essentially this is equivalent to DOS scripting of “@ECHO OFF” by suppressing echoing the command just run, but only for the specific command it is appended to.  I haven’t yet found a better way to accomplish command suppression, but this is definitely not required for the script to work. $profile represent a standard variable to the file path of the profile file.  It is dynamic based on whether you are running PowerShell Console or ISE.   Conclusion     In less than two weeks (Apr. 10th to be exact) I’ll be heading down to SharePoint Saturday Charlotte (SPSCLT) to give two presentations on using PowerShell with SharePoint.  Since I’ll be prepping a lot of material for PowerShell I thought it only appropriate to pass along this nice little script I recently created.  If you’ve never used a PowerShell profile this is a great chance to start using one.  If you’ve been using a profile before, perhaps you learned a trick or two to add to your toolbox.  For those of you in the Charlotte, NC area sign up for the SharePoint Saturday and see some great content and community with great folks.         -Frog Out

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• Sesame update du jour: SL 4, OOB, Azure, and proxy support

  - by Fabrice Marguerie

  I've just published a new version of Sesame Data Browser. Here's what's new this time: Upgraded to Silverlight 4 Can run out-of-browser (OOB), with elevated permissions. This gives you an icon on your desktop and enables new scenarios. Note: The application is unsigned for the moment. Support for Windows Azure authentication Support for SQL Azure authentication If you are behind a proxy that requires authentication, just give Sesame a new try after clicking on "If you are behind a proxy that requires authentication, please click here" An icon and a button for closing connections are now displayed on connection tabsSome less visible improvements Here is the connection view with anonymous access: If you want to access Windows Azure tables as OData, all you have to do is use your table storage endpoint as the URL, and provide your access key: A Windows Azure table storage address looks like this: http://<your account>.table.core.windows.net/ If you want to browse your SQL Azure databases with Sesame, you have to enable OData support for them at https://www.sqlazurelabs.com/ConfigOData.aspx. I won't show how it works because it's already been done in several places over the Web. Here are pointers: OData.org: Got SQL Azure? Then you've got OData OakLeaf Systems: Enabling and Using the OData Protocol with SQL Azure Patrick Verbruggen: Creating an OData feed for your Azure databases Shawn Wildermuth: SQL Azure's OData Support Jack Greenfield: How to Use OData for SQL Azure with AppFabric Access Control You can choose to enable anonymous access or not. When you don't enable anonymous access, you have to provide an Issuer name and a Secret key, and optionally an Security Token Service (STS) endpoint: Excerpt from Jack Greenfield's blog: To enable OData access to the currently selected database, check the box labeled "Enable OData". When OData access is enabled, database user mapping information is displayed at the bottom of the form.Use the drop down list labeled "Anonymous Access User" to select an anonymous access user. If an anonymous access user is selected, then all queries against the database presented without credentials will execute by impersonating that user. You can access the database as the anonymous user by clicking on the link provided at the bottom of the page. If no anonymous access user is selected, then the OData Service will not allow anonymous access to the database.Click the link labeled "Add User" to add a user for authenticated access. In the pop up panel, select the user from the drop down list. Leave the issuer name empty for simple authentication, or provide the name of a trusted Security Token Service (STS) for federated authentication. For example, to federate with another ACS based STS, provide the base URI for the STS endpoint displayed by the Windows Azure AppFabric Portal for the STS.Click the "OK" button to complete the configuration process and dismiss the pop up panel. When one or more authenticated access users are added, the OData Service will impersonate them when appropriate credentials are presented. You can designate as many authenticated access users as you like. The OData Service will decide which one to impersonate for each query by inspecting the credentials presented with the query.Next time I'll give an overview of how Sesame Data Browser is built.In the meantime, happy data browsing!

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• Interleaving Arrays in OpenGL

  - by Benjamin Danger Johnson

  In my pursuit to write code that matches todays OpenGL standards I have found that I am completely clueless about interleaving arrays. I've tried and debugged just about everywhere I can think of but I can't get my model to render using interleaved arrays (It worked when it was configuered to use multiple arrays) Now I know that all the data is properly being parsed from an obj file and information is being copied properly copied into the Vertex object array, but I still can't seem to get anything to render. Below is the code for initializing a model and drawing it (along with the Vertex struct for reference.) Vertex: struct Vertex { glm::vec3 position; glm::vec3 normal; glm::vec2 uv; glm::vec3 tangent; glm::vec3 bitangent; }; Model Constructor: Model::Model(const char* filename) { bool result = loadObj(filename, vertices, indices); glGenVertexArrays(1, &vertexArrayID); glBindVertexArray(vertexArrayID); glGenBuffers(1, &vertexbuffer); glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer); glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(Vertex), &vertices[0], GL_STATIC_DRAW); glGenBuffers(1, &elementbuffer); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementbuffer); glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(unsigned short), &indices[0], GL_STATIC_DRAW); } Draw Model: Model::Draw(ICamera camera) { GLuint matrixID = glGetUniformLocation(programID, "mvp"); GLuint positionID = glGetAttribLocation(programID, "position_modelspace"); GLuint uvID = glGetAttribLocation(programID, "uv"); GLuint normalID = glGetAttribLocation(programID, "normal_modelspace"); GLuint tangentID = glGetAttribLocation(programID, "tangent_modelspace"); GLuint bitangentID = glGetAttribLocation(programID, "bitangent_modelspace"); glm::mat4 projection = camera->GetProjectionMatrix(); glm::mat4 view = camera->GetViewMatrix(); glm::mat4 model = glm::mat4(1.0f); glm::mat4 mvp = projection * view * model; glUniformMatrix4fv(matrixID, 1, GL_FALSE, &mvp[0][0]); glBindVertexArray(vertexArrayID); glEnableVertexAttribArray(positionID); glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer); glVertexAttribPointer(positionID, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), &vertices[0].position); glEnableVertexAttribArray(uvID); glVertexAttribPointer(uvID, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), &vertices[0].uv); glEnableVertexAttribArray(normalID); glVertexAttribPointer(normalID, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), &vertices[0].normal); glEnableVertexAttribArray(tangentID); glVertexAttribPointer(tangentID, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), &vertices[0].tangent); glEnableVertexAttribArray(bitangentID); glVertexAttribPointer(bitangentID, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), &vertices[0].bitangent); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementbuffer); glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_SHORT, (void*)0); glDisableVertexAttribArray(positionID); glDisableVertexAttribArray(uvID); glDisableVertexAttribArray(normalID); glDisableVertexAttribArray(tangentID); glDisableVertexAttribArray(bitangentID); }

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• Just another web startup - platform comparison

  - by Holland

  I'm looking to do a web startup which involves something along the lines of an ecommerce site, yet a little more in depth than that. While it's something that I would rather not go into detail with in terms of the initial idea, I can specify (on a basic level) what would be required of the website. If you have any observations or opinions derived from personal experience, which relate to what you see here, I'd appreciate it if you could share these. Paypal's API interaction (definitely). From what I've read about their API, integration with it into their website is VERY expensive, so I'd probably hold off on that until I've (hopefully) generated money and write my own simple credit-card interaction system. SQL Backend (obviously) PostgreSQL seems like a pretty good choice, as from what I've read, it's structure is a bit more "object-oriented" than, say, MySQL. Then again, I've used MySQL before and haven't had much problem with it whatsoever. Would it be worth learning PostgreSQL for this purpose? Java or .Net implementation (Preferably Mono, so I can use .Net while hosting the website using Apache). The reason for this is because, frankly, while I know PHP is a great platform to develop websites with, I hate developing with it. Before someone chimes in and flames me for saying that, note that I have nothing against the language, I just don't like it for my purposes. While Mono may be good to go with, I'm aware that ASP.Net MVC 3 hasn't been released for Mono yet, which may be a pain to work with, without their Razor syntax. Ontop of that, it seems Java is completely FULL of class libraries which deal with web development, that can be downloaded from the web. If anyone has any experience with these, I'd appreciate if that were posted. From what I've read about Spring and Struts2, they seem to be the best out there - especially since they're (AFAIK) MVC. I've considered Python and Django, which do seem REALLY nice, but I don't know much Python, and I'd rather start with something that I already know (language-wise; not framework-wise) than dive into learning a language AND a new framework. I'd REALLY like to be able to host my website via Apache, rather than using Windows Server or anything like that, as, frankly, I hate their setup. I'm not dissing it in any way, shape, or form, I'm just saying I dislike it. <3 terminal config. If there is a good reason to with Windows Server, however, I'd be willing to learn it. C# has a lot of things that Java appears not to have, including Delegates, unsigned types, and LINQ. Is there anything that Java has which can counter these?

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• Physics/Graphics Components

  - by Brett Powell

  I have spent the last 48 hours reading up on Object Component systems, and feel I am ready enough to start implementing it. I got the base Object and Component classes created, but now that I need to start creating the actual components I am a bit confused. When I think of them in terms of HealthComponent or something that would basically just be a property, it makes perfect sense. When it is something more general as a Physics/Graphics component, I get a bit confused. My Object class looks like this so far (If you notice any changes I should make please let me know, still new to this)... typedef unsigned int ID; class GameObject { public: GameObject(ID id, Ogre::String name = ""); ~GameObject(); ID &getID(); Ogre::String &getName(); virtual void update() = 0; // Component Functions void addComponent(Component *component); void removeComponent(Ogre::String familyName); template<typename T> T* getComponent(Ogre::String familyName) { return dynamic_cast<T*>(m_components[familyName]); } protected: // Properties ID m_ID; Ogre::String m_Name; float m_flVelocity; Ogre::Vector3 m_vecPosition; // Components std::map<std::string,Component*> m_components; std::map<std::string,Component*>::iterator m_componentItr; }; Now the problem I am running into is what would the general population put into Components such as Physics/Graphics? For Ogre (my rendering engine) the visible Objects will consist of multiple Ogre::SceneNode (possibly multiple) to attach it to the scene, Ogre::Entity (possibly multiple) to show the visible meshes, and so on. Would it be best to just add multiple GraphicComponent's to the Object and let each GraphicComponent handle one SceneNode/Entity or is the idea to have one of each Component needed? For Physics I am even more confused. I suppose maybe creating a RigidBody and keeping track of mass/interia/etc. would make sense. But I am having trouble thinking of how to actually putting specifics into a Component. Once I get a couple of these "Required" components done, I think it will make a lot more sense. As of right now though I am still a bit stumped.

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• Segmentation fault 11 in MacOS X- C++ [migrated]

  - by Marcos Cesar Vargas Magana

  all. I have a "segmentation fault 11" error when I run the following code. The code actually compiles but I get the error at run time. //** Terror.h ** #include <iostream> #include <string> #include <map> using std::map; using std::pair; using std::string; template<typename Tsize> class Terror { public: //Inserts a message in the map. static Tsize insertMessage(const string& message) { mErrorMessages.insert( pair<Tsize, string>(mErrorMessages.size()+1, message) ); return mErrorMessages.size(); } private: static map<Tsize, string> mErrorMessages; } template<typename Tsize> map<Tsize,string> Terror<Tsize>::mErrorMessages; //** error.h ** #include <iostream> #include "Terror.h" typedef unsigned short errorType; typedef Terror<errorType> error; errorType memoryAllocationError=error::insertMessage("ERROR: out of memory."); //** main.cpp ** #include <iostream> #include "error.h" using namespace std; int main() { try { throw error(memoryAllocationError); } catch(error& err) { } } I have kind of debugging the code and the error happens when the message is being inserted in the static map member. An observation is that if I put the line: errorType memoryAllocationError=error::insertMessage("ERROR: out of memory."); inside the "main()" function instead of at global scope, then everything works fine. But I would like to extend the error messages at global scope, not at local scope. The map is defined static so that all instances of "error" share the same error codes and messages. Do you know how can I get this or something similar. Thank you very much.

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• Stencil buffer appears to not be decrementing values correctly

  - by Alex Ames

  I'm attempting to use the stencil buffer as a clipper for my UI system, but I'm having trouble debugging a problem I'm running in to. This is what I'm doing: A widget can pass a rectangle to the the stencil clipper functions, which will increment the stencil buffer values that it covers. Then it will draw its children, which will only get drawn in the stencilled area (so that if they extend outside they'll be clipped). After a widget is done drawing its children, it pops that rectangle from the stack and in the process decrements the values in the stencil buffer that it has previously incremented. The slightly simplified code is below: static void drawStencil(Rect& rect, unsigned int ref) { // Save previous values of the color and depth masks GLboolean colorMask[4]; GLboolean depthMask; glGetBooleanv(GL_COLOR_WRITEMASK, colorMask); glGetBooleanv(GL_DEPTH_WRITEMASK, &depthMask); // Turn off drawing glColorMask(0, 0, 0, 0); glDepthMask(0); // Draw vertices here ... // Turn everything back on glColorMask(colorMask[0], colorMask[1], colorMask[2], colorMask[3]); glDepthMask(depthMask); // Only render pixels in areas where the stencil buffer value == ref glStencilFunc(GL_EQUAL, ref, 0xFF); glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP); } void pushScissor(Rect rect) { // increment things only at the current stencil stack level glStencilFunc(GL_EQUAL, s_scissorStack.size(), 0xFF); glStencilOp(GL_KEEP, GL_INCR, GL_INCR); s_scissorStack.push_back(rect); drawStencil(rect, states, s_ScissorStack.size()); } void popScissor() { // undo what was done in the previous push, // decrement things only at the current stencil stack level glStencilFunc(GL_EQUAL, s_scissorStack.size(), 0xFF); glStencilOp(GL_KEEP, GL_DECR, GL_DECR); Rect rect = s_scissorStack.back(); s_scissorStack.pop_back(); drawStencil(rect, states, s_scissorStack.size()); } And this is how it's being used by the Widgets if (m_clip) pushScissor(m_rect); drawInternal(target, states); for (auto child : m_children) target.draw(*child, states); if (m_clip) popScissor(); This is the result of the above code: There are two things on the screen, a giant test button, and a window with some buttons and text areas on it. The text area scroll box is set to clip its children (so that the text doesn't extend outside the scroll box). The button is drawn after the window and should be on top of it completely. However, for some reason the text area is appearing on top of the button. The only reason I can think of that this would happen is if the stencil values were not getting decremented in the pop, and when it comes time to render the button, since those pixels don't have the right stencil value it doesn't draw over. But I can't figure out whats wrong with my code that would cause that to happen.

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• Collision rectangle response

  - by dotty

  I'm having difficulties getting a moveable rectangle to collide with more than one rectangle. I'm using SFML and it has a handy function called Intersect() which takes 2 rectangles and returns the intersections. I have a vector full of rectangles which I want my moveable rectangle to collide with. I'm looping through this using the following code (p is the moveble rectangle). IsCollidingWith returns a bool but also uses SFML's Interesect to work out the intersections. while(unsigned i = 0; i!= testRects.size(); i++){ if(p.IsCollidingWith(testRects[i]){ p.Collide(testRects[i]); } } and the actual Collide() code void gameObj::collide( gameObj collidingObject ){ printf("%f %f\n", this->colliderResult.width, this->colliderResult.height); if (this->colliderResult.width < this->colliderResult.height) { // collided on X if (this->getCollider().left < collidingObject.getCollider().left ) { this->move( -this->colliderResult.width , 0); }else { this->move( this->colliderResult.width, 0 ); } } if(this->colliderResult.width > this->colliderResult.height){ if (this->getCollider().top < collidingObject.getCollider().top ) { this->move( 0, -this->colliderResult.height); }else { this->move( 0, this->colliderResult.height ); } } } and the IsCollidingWith() code is bool gameObj::isCollidingWith( gameObj testObject ){ if (this->getCollider().intersects( testObject.getCollider(), this->colliderResult )) { return true; }else { return false; } } This works fine when there's only 1 Rect in the scene. However, when there's move than one Rect it causes issue when working out 2 collisions at once. Any idea how to deal with this correctly? I have uploaded a video to youtube to show my problem. The console on the far-right shows the width and height of the intersections. You can see on the console that it's trying to calculate 2 collisions at once, I think this is where the problem is being caused. The youtube video is at http://www.youtube.com/watch?v=fA2gflOMcAk also , this image also seems to illustrate the problem nicely. Can someone please help, I've been stuck on this all weekend!

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• openGL textures in bitmap mode

  - by evenex_code

  For reasons detailed here I need to texture a quad using a bitmap (as in, 1 bit per pixel, not an 8-bit pixmap). Right now I have a bitmap stored in an on-device buffer, and am mounting it like so: glBindBuffer(GL_PIXEL_UNPACK_BUFFER, BFR.G[(T+1)%2]); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, W, H, 0, GL_COLOR_INDEX, GL_BITMAP, 0); The OpenGL spec has this to say about glTexImage2D: "If type is GL_BITMAP, the data is considered as a string of unsigned bytes (and format must be GL_COLOR_INDEX). Each data byte is treated as eight 1-bit elements..." Judging by the spec, each bit in my buffer should correspond to a single pixel. However, the following experiments show that, for whatever reason, it doesn't work as advertised: 1) When I build my texture, I write to the buffer in 32-bit chunks. From the wording of the spec, it is reasonable to assume that writing 0x00000001 for each value would result in a texture with 1-px-wide vertical bars with 31-wide spaces between them. However, it appears blank. 2) Next, I write with 0x000000FF. By my apparently flawed understanding of the bitmap mode, I would expect that this should produce 8-wide bars with 24-wide spaces between them. Instead, it produces a white 1-px-wide bar. 3) 0x55555555 = 1010101010101010101010101010101, therefore writing this value ought to create 1-wide vertical stripes with 1 pixel spacing. However, it creates a solid gray color. 4) Using my original 8-bit pixmap in GL_BITMAP mode produces the correct animation. I have reached the conclusion that, even in GL_BITMAP mode, the texturer is still interpreting 8-bits as 1 element, despite what the spec seems to suggest. The fact that I can generate a gray color (while I was expecting that I was working in two-tone), as well as the fact that my original 8-bit pixmap generates the correct picture, support this conclusion. Questions: 1) Am I missing some kind of prerequisite call (perhaps for setting a stride length or pack alignment or something) that will signal to the texturer to treat each byte as 8-elements, as it suggests in the spec? 2) Or does it simply not work because modern hardware does not support it? (I have read that GL_BITMAP mode was deprecated in 3.3, I am however forcing a 3.0 context.) 3) Am I better off unpacking the bitmap into a pixmap using a shader? This is a far more roundabout solution than I was hoping for but I suppose there is no such thing as a free lunch.

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• Implementation of ZipCrypto / Zip 2.0 encryption in java

  - by gomesla

  I'm trying o implement the zipcrypto / zip 2.0 encryption algoritm to deal with encrypted zip files as discussed in http://www.pkware.com/documents/casestudies/APPNOTE.TXT I believe I've followed the specs but just can't seem to get it working. I'm fairly sure the issue has to do with my interpretation of the crc algorithm. The documentation states CRC-32: (4 bytes) The CRC-32 algorithm was generously contributed by David Schwaderer and can be found in his excellent book "C Programmers Guide to NetBIOS" published by Howard W. Sams & Co. Inc. The 'magic number' for the CRC is 0xdebb20e3. The proper CRC pre and post conditioning is used, meaning that the CRC register is pre-conditioned with all ones (a starting value of 0xffffffff) and the value is post-conditioned by taking the one's complement of the CRC residual. Here is the snippet that I'm using for the crc32 public class PKZIPCRC32 { private static final int CRC32_POLYNOMIAL = 0xdebb20e3; private int crc = 0xffffffff; private int CRCTable[]; public PKZIPCRC32() { buildCRCTable(); } private void buildCRCTable() { int i, j; CRCTable = new int[256]; for (i = 0; i <= 255; i++) { crc = i; for (j = 8; j > 0; j--) if ((crc & 1) == 1) crc = (crc >>> 1) ^ CRC32_POLYNOMIAL; else crc >>>= 1; CRCTable[i] = crc; } } private int crc32(byte buffer[], int start, int count, int lastcrc) { int temp1, temp2; int i = start; crc = lastcrc; while (count-- != 0) { temp1 = crc >>> 8; temp2 = CRCTable[(crc ^ buffer[i++]) & 0xFF]; crc = temp1 ^ temp2; } return crc; } public int crc32(int crc, byte buffer) { return crc32(new byte[] { buffer }, 0, 1, crc); } } Below is my complete code. Can anyone see what I'm doing wrong. package org.apache.commons.compress.archivers.zip; import java.io.IOException; import java.io.InputStream; public class ZipCryptoInputStream extends InputStream { public class PKZIPCRC32 { private static final int CRC32_POLYNOMIAL = 0xdebb20e3; private int crc = 0xffffffff; private int CRCTable[]; public PKZIPCRC32() { buildCRCTable(); } private void buildCRCTable() { int i, j; CRCTable = new int[256]; for (i = 0; i <= 255; i++) { crc = i; for (j = 8; j > 0; j--) if ((crc & 1) == 1) crc = (crc >>> 1) ^ CRC32_POLYNOMIAL; else crc >>>= 1; CRCTable[i] = crc; } } private int crc32(byte buffer[], int start, int count, int lastcrc) { int temp1, temp2; int i = start; crc = lastcrc; while (count-- != 0) { temp1 = crc >>> 8; temp2 = CRCTable[(crc ^ buffer[i++]) & 0xFF]; crc = temp1 ^ temp2; } return crc; } public int crc32(int crc, byte buffer) { return crc32(new byte[] { buffer }, 0, 1, crc); } } private static final long ENCRYPTION_KEY_1 = 0x12345678; private static final long ENCRYPTION_KEY_2 = 0x23456789; private static final long ENCRYPTION_KEY_3 = 0x34567890; private InputStream baseInputStream = null; private final PKZIPCRC32 checksumEngine = new PKZIPCRC32(); private long[] keys = null; public ZipCryptoInputStream(ZipArchiveEntry zipEntry, InputStream inputStream, String passwd) throws Exception { baseInputStream = inputStream; // Decryption // ---------- // PKZIP encrypts the compressed data stream. Encrypted files must // be decrypted before they can be extracted. // // Each encrypted file has an extra 12 bytes stored at the start of // the data area defining the encryption header for that file. The // encryption header is originally set to random values, and then // itself encrypted, using three, 32-bit keys. The key values are // initialized using the supplied encryption password. After each byte // is encrypted, the keys are then updated using pseudo-random number // generation techniques in combination with the same CRC-32 algorithm // used in PKZIP and described elsewhere in this document. // // The following is the basic steps required to decrypt a file: // // 1) Initialize the three 32-bit keys with the password. // 2) Read and decrypt the 12-byte encryption header, further // initializing the encryption keys. // 3) Read and decrypt the compressed data stream using the // encryption keys. // Step 1 - Initializing the encryption keys // ----------------------------------------- // // Key(0) <- 305419896 // Key(1) <- 591751049 // Key(2) <- 878082192 // // loop for i <- 0 to length(password)-1 // update_keys(password(i)) // end loop // // Where update_keys() is defined as: // // update_keys(char): // Key(0) <- crc32(key(0),char) // Key(1) <- Key(1) + (Key(0) & 000000ffH) // Key(1) <- Key(1) * 134775813 + 1 // Key(2) <- crc32(key(2),key(1) >> 24) // end update_keys // // Where crc32(old_crc,char) is a routine that given a CRC value and a // character, returns an updated CRC value after applying the CRC-32 // algorithm described elsewhere in this document. keys = new long[] { ENCRYPTION_KEY_1, ENCRYPTION_KEY_2, ENCRYPTION_KEY_3 }; for (int i = 0; i < passwd.length(); ++i) { update_keys((byte) passwd.charAt(i)); } // Step 2 - Decrypting the encryption header // ----------------------------------------- // // The purpose of this step is to further initialize the encryption // keys, based on random data, to render a plaintext attack on the // data ineffective. // // Read the 12-byte encryption header into Buffer, in locations // Buffer(0) thru Buffer(11). // // loop for i <- 0 to 11 // C <- buffer(i) ^ decrypt_byte() // update_keys(C) // buffer(i) <- C // end loop // // Where decrypt_byte() is defined as: // // unsigned char decrypt_byte() // local unsigned short temp // temp <- Key(2) | 2 // decrypt_byte <- (temp * (temp ^ 1)) >> 8 // end decrypt_byte // // After the header is decrypted, the last 1 or 2 bytes in Buffer // should be the high-order word/byte of the CRC for the file being // decrypted, stored in Intel low-byte/high-byte order. Versions of // PKZIP prior to 2.0 used a 2 byte CRC check; a 1 byte CRC check is // used on versions after 2.0. This can be used to test if the password // supplied is correct or not. byte[] encryptionHeader = new byte[12]; baseInputStream.read(encryptionHeader); for (int i = 0; i < encryptionHeader.length; i++) { encryptionHeader[i] ^= decrypt_byte(); update_keys(encryptionHeader[i]); } } protected byte decrypt_byte() { byte temp = (byte) (keys[2] | 2); return (byte) ((temp * (temp ^ 1)) >> 8); } @Override public int read() throws IOException { // // Step 3 - Decrypting the compressed data stream // ---------------------------------------------- // // The compressed data stream can be decrypted as follows: // // loop until done // read a character into C // Temp <- C ^ decrypt_byte() // update_keys(temp) // output Temp // end loop int read = baseInputStream.read(); read ^= decrypt_byte(); update_keys((byte) read); return read; } private final void update_keys(byte ch) { keys[0] = checksumEngine.crc32((int) keys[0], ch); keys[1] = keys[1] + (byte) keys[0]; keys[1] = keys[1] * 134775813 + 1; keys[2] = checksumEngine.crc32((int) keys[2], (byte) (keys[1] >> 24)); } }

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• Qt Linking Error.

  - by Wallah

  Hi, I configure qt-x11 with following options ./configure -prefix /iTalk/qtx11 -prefix-install -bindir /iTalk/qtx11-install/bin -libdir /iTalk/qtx11-install/lib -docdir /iTalk/qtx11-install/doc -headerdir /iTalk/qtx11-install/include -datadir /iTalk/qtx11-install/data -examplesdir /iTalk/qtx11-install/examples -demosdir /iTalk/qtx11-install/demos -debug. Now I am getting following errors in Fedora Core 6. Can you please tell me where the problem is? obj/debug-shared/qapplication_x11.o: In function `qt_init(QApplicationPrivate*, int, _XDisplay*, unsigned long, unsigned long)': /iTalk/QT4/qt/src/gui/kernel/qapplication_x11.cpp:1713: undefined reference to `FcInit' .obj/debug-shared/qfontdatabase.o: In function `queryFont': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1727: undefined reference to `FcFreeTypeQuery' .obj/debug-shared/qfontdatabase.o: In function `registerFont': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1959: undefined reference to `FcConfigGetCurrent' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1963: undefined reference to `FcConfigGetFonts' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1965: undefined reference to `FcConfigAppFontAddFile' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1966: undefined reference to `FcConfigGetFonts' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1985: undefined reference to `FcConfigGetBlanks' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1997: undefined reference to `FcPatternDel' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1998: undefined reference to `FcPatternAddString' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:2001: undefined reference to `FcPatternGetString' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:2006: undefined reference to `FcFontSetAdd' .obj/debug-shared/qfontdatabase.o: In function `qt_FcPatternToQFontDef(_FcPattern*, QFontDef const&)': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:746: undefined reference to `FcPatternGetString' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:751: undefined reference to `FcPatternGetDouble' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:759: undefined reference to `FcPatternGetDouble' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:771: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:776: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:786: undefined reference to `FcPatternGetBool' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:793: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:800: undefined reference to `FcPatternGetInteger' .obj/debug-shared/qfontdatabase.o: In function `FcFontSetRemove': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1573: undefined reference to `FcPatternDestroy' .obj/debug-shared/qfontdatabase.o: In function `qt_fontSetForPattern(_FcPattern*, QFontDef const&)': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1657: undefined reference to `FcFontSort' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1671: undefined reference to `FcPatternGetBool' .obj/debug-shared/qfontdatabase.o: In function `qt_addPatternProps(_FcPattern*, int, int, QFontDef const&)': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1449: undefined reference to `FcPatternAddInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1456: undefined reference to `FcPatternAddInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1459: undefined reference to `FcPatternAddDouble' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1464: undefined reference to `FcPatternAddInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1468: undefined reference to `FcPatternAddBool' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1471: undefined reference to `FcPatternAddBool' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1476: undefined reference to `FcLangSetCreate' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1477: undefined reference to `FcLangSetAdd' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1478: undefined reference to `FcPatternAddLangSet' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1479: undefined reference to `FcLangSetDestroy' .obj/debug-shared/qfontdatabase.o: In function `tryPatternLoad': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1588: undefined reference to `FcPatternDuplicate' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1593: undefined reference to `FcConfigSubstitute' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1594: undefined reference to `FcDefaultSubstitute' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1596: undefined reference to `FcFontMatch' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1606: undefined reference to `FcPatternDuplicate' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1613: undefined reference to `FcPatternGetCharSet' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1615: undefined reference to `FcCharSetHasChar' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1619: undefined reference to `FcPatternGetLangSet' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1621: undefined reference to `FcLangSetHasLang' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1628: undefined reference to `FcPatternDel' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1629: undefined reference to `FcPatternAddBool' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1646: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1648: undefined reference to `FcPatternDestroy' .obj/debug-shared/qfontdatabase.o: In function `loadFontConfig': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1023: undefined reference to `FcObjectSetCreate' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1024: undefined reference to `FcPatternCreate' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1037: undefined reference to `FcObjectSetAdd' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1040: undefined reference to `FcFontList' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1041: undefined reference to `FcObjectSetDestroy' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1042: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1046: undefined reference to `FcPatternGetString' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1057: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1059: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1061: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1063: undefined reference to `FcPatternGetString' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1065: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1067: undefined reference to `FcPatternGetBool' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1069: undefined reference to `FcPatternGetString' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1074: undefined reference to `FcPatternGetLangSet' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1081: undefined reference to `FcLangSetHasLang' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1100: undefined reference to `FcPatternGetCharSet' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1107: undefined reference to `FcCharSetHasChar' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1116: undefined reference to `FcPatternGetString' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1136: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1153: undefined reference to `FcPatternGetDouble' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1161: undefined reference to `FcFontSetDestroy' .obj/debug-shared/qfontdatabase.o: In function `getFcPattern': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1494: undefined reference to `FcPatternCreate' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1509: undefined reference to `FcPatternAdd' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1516: undefined reference to `FcPatternAddWeak' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1524: undefined reference to `FcPatternAddWeak' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1531: undefined reference to `FcPatternAddInteger' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1533: undefined reference to `FcPatternAddBool' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1535: undefined reference to `FcPatternAddBool' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1539: undefined reference to `FcDefaultSubstitute' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1540: undefined reference to `FcConfigSubstitute' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1541: undefined reference to `FcConfigSubstitute' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1550: undefined reference to `FcPatternAddWeak' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1557: undefined reference to `FcPatternAddWeak' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1564: undefined reference to `FcPatternAddWeak' .obj/debug-shared/qfontdatabase.o: In function `loadFc': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1707: undefined reference to `FcFontSetDestroy' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1716: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:1718: undefined reference to `FcPatternDestroy' .obj/debug-shared/qfontdatabase.o: In function `QFontDatabase::removeAllApplicationFonts()': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:2048: undefined reference to `FcConfigAppFontClear' .obj/debug-shared/qfontdatabase.o: In function `QFontDatabase::removeApplicationFont(int)': /iTalk/QT4/qt/src/gui/text/qfontdatabase_x11.cpp:2027: undefined reference to `FcConfigAppFontClear' .obj/debug-shared/qfontengine_x11.o: In function `qt_x11ft_convert_pattern(_FcPattern*, QByteArray*, int*, bool*)': /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:970: undefined reference to `FcPatternGetString' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:972: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:975: undefined reference to `FcPatternGetBool' .obj/debug-shared/qfontengine_x11.o: In function `QFontEngineX11FT': /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:999: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1016: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1041: undefined reference to `FcPatternGetBool' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1077: undefined reference to `FcPatternGetBool' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1106: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1112: undefined reference to `FcPatternGetCharSet' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1113: undefined reference to `FcCharSetCopy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1115: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:999: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1016: undefined reference to `FcPatternGetInteger' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1041: undefined reference to `FcPatternGetBool' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1077: undefined reference to `FcPatternGetBool' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1106: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1112: undefined reference to `FcPatternGetCharSet' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1113: undefined reference to `FcCharSetCopy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:1115: undefined reference to `FcPatternDestroy' .obj/debug-shared/qfontengine_x11.o: In function `engineForPattern': /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:868: undefined reference to `FcFontMatch' .obj/debug-shared/qfontengine_x11.o: In function `QFontEngineMultiFT::loadEngine(int)': /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:929: undefined reference to `FcPatternEqual' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:932: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:941: undefined reference to `FcPatternDuplicate' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:951: undefined reference to `FcConfigSubstitute' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:952: undefined reference to `FcDefaultSubstitute' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:956: undefined reference to `FcPatternDestroy' .obj/debug-shared/qfontengine_x11.o: In function `~QFontEngineMultiFT': /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:895: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:897: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:899: undefined reference to `FcFontSetDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:895: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:897: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:899: undefined reference to `FcFontSetDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:895: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:897: undefined reference to `FcPatternDestroy' /iTalk/QT4/qt/src/gui/text/qfontengine_x11.cpp:899: undefined reference to `FcFontSetDestroy' .obj/debug-shared/qfontengine_ft.o: In function `QFontEngineFT::stringToCMap(QChar const*, int, QGlyphLayout*, int*, QFlags) const': /iTalk/QT4/qt/src/gui/text/qfontengine_ft.cpp:1546: undefined reference to `FcCharSetHasChar' /iTalk/QT4/qt/src/gui/text/qfontengine_ft.cpp:1581: undefined reference to `FcCharSetHasChar' .obj/debug-shared/qfontengine_ft.o: In function `QFreetypeFace::release(QFontEngine::FaceId const&)': /iTalk/QT4/qt/src/gui/text/qfontengine_ft.cpp:308: undefined reference to `FcCharSetDestroy' collect2: ld returned 1 exit status make[1]: *** [../../lib/libQtGui.so.4.5.3] Error 1 make[1]: Leaving directory `/iTalk/QT4/qt/src/gui' make: *** [sub-gui-make_default-ordered] Error 2

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• Core Data error when assigning variable with one-to-one relationship

  - by Hoang Pham

  I tried to assign a managed object (C) with its property another managed object (B) (a one-to-one relationship) in which this other managed object (B) has a to-many relationship with one other managed object (A). There is an error from this assignment in which I copied as follows: #0 0x020e53a7 in ___forwarding___ #1 0x020c16c2 in __forwarding_prep_0___ #2 0x02078988 in CFRetain #3 0x0207a728 in CFSetAddValue #4 0x020c2fb2 in CFSetCreate #5 0x01e51ce8 in -[_NSFaultingMutableSet copyWithZone:] #6 0x020afcca in -[NSObject copy] #7 0x01e50d22 in -[NSManagedObject(_NSInternalMethods) _newPropertiesForRetainedTypes:andCopiedTypes:preserveFaults:] #8 0x01e51aa0 in -[NSManagedObject(_NSInternalMethods) _newAllPropertiesWithRelationshipFaultsIntact__] #9 0x01e519b4 in -[NSManagedObjectContext(_NSInternalChangeProcessing) _establishEventSnapshotsForObject:] #10 0x01e51866 in _PFFastMOCObjectWillChange #11 0x01e516c5 in _PF_ManagedObject_WillChangeValueForKeyIndex #12 0x01e51525 in _sharedIMPL_setvfk_core #13 0x01e51483 in _PF_Handler_Public_SetProperty #14 0x01e546d1 in -[NSManagedObject(_NSInternalMethods) _didChangeValue:forRelationship:named:withInverse:] #15 0x0030ec1e in NSKVONotify #16 0x002aae2a in -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] #17 0x01e5212f in _PF_ManagedObject_DidChangeValueForKeyIndex #18 0x01e515b1 in _sharedIMPL_setvfk_core #19 0x01e55827 in _svfk_5 I don't understand very well what the exact description of this error is. Can someone explain to me what it is and how to solve this one. Note that all other assignments in which the managed object B does not have any A items do not raise this error. ObjectC *objectC = [NSEntityDescription insertNewObjectForEntityForName:@"ObjectC" inManagedObjectContext:managedObjectContext]; objectC.objectB = objectB; Thank you in advance. I added some more NSZombieEnabled/MallocStackLogging generated log: 2010-05-18 17:28:05.327 Foo[2069:207] *** -[CFSet retain]: message sent to deallocated instance 0x800c880 (gdb) shell malloc_history 207 0x800c880 malloc_history cannot examine process 207 because the process does not exist. (gdb) shell malloc_history 2069 0x800c880 ALLOC 0x800c880-0x800c884 [size=5]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlIOParseDTD | _endElementNs | -[Parser parser:didEndElement:namespaceURI:qualifiedName:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asl_set_query | strdup | malloc | malloc_zone_malloc ---- FREE 0x800c880-0x800c884 [size=5]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlIOParseDTD | _endElementNs | -[Parser parser:didEndElement:namespaceURI:qualifiedName:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asl_free | free ALLOC 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asl_set_query | asprintf | malloc | malloc_zone_malloc ---- FREE 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asl_set_query | free ALLOC 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asprintf | malloc | malloc_zone_malloc ---- FREE 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | free ALLOC 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asprintf | malloc | malloc_zone_malloc ---- FREE 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | free ALLOC 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asprintf | malloc | malloc_zone_malloc ---- FREE 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | free ALLOC 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asprintf | malloc | malloc_zone_malloc ---- FREE 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | free ALLOC 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | asprintf | malloc | malloc_zone_malloc ---- FREE 0x800c860-0x800c8df [size=128]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlParseCharData | _characters | -[Parser parser:foundCharacters:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | asl_send | _asl_send_level_message | free ALLOC 0x800c700-0x800c893 [size=404]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlIOParseDTD | _startElementNs | -[Parser parser:didStartElement:namespaceURI:qualifiedName:attributes:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | CFCalendarDecomposeAbsoluteTime | _CFCalendarDecomposeAbsoluteTimeV | __CFCalendarSetupCal | __CFCalendarCreateUCalendar | ucal_open | icu::Calendar::createInstance(icu::TimeZone*, icu::Locale const&, UErrorCode&) | malloc | malloc_zone_malloc ---- FREE 0x800c700-0x800c893 [size=404]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlIOParseDTD | _startElementNs | -[Parser parser:didStartElement:namespaceURI:qualifiedName:attributes:] | NSLog | NSLogv | _CFLogvEx | __CFLogCString | _CFRelease | free ALLOC 0x800c880-0x800c8c7 [size=72]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __NSFireDelayedPerform | -[Step2ViewController downloadData] | -[Parser downloadVariantsWithPin:forTerminal:] | -[Parser parseByNSXMLParser:] | -[NSXMLParser parse] | xmlParseChunk | xmlIOParseDTD | _startElementNs | -[Parser parser:didStartElement:namespaceURI:qualifiedName:attributes:] | +[NSEntityDescription insertNewObjectForEntityForName:inManagedObjectContext:] | +[NSManagedObject(_PFDynamicAccessorsAndPropertySupport) allocWithEntity:] | _PFAllocateObject | malloc_zone_calloc ---- FREE 0x800c880-0x800c8c7 [size=72]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __CFRunLoopDoObservers | _performRunLoopAction | -[_PFManagedObjectReferenceQueue _processReferenceQueue:] | _PFDeallocateObject | malloc_zone_free ALLOC 0x800c880-0x800c8a7 [size=40]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __CFRunLoopDoObservers | CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) | CA::Transaction::commit() | CA::Context::commit_transaction(CA::Transaction*) | CALayerDisplayIfNeeded | -[TileLayer display] | -[CALayer _display] | CABackingStoreUpdate | backing_callback(CGContext*, void*) | WebCore::TiledSurface::drawLayer(CALayer*, CGContext*) | WKWindowDrawRect | WKViewDisplayRect | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | -[WebHTMLView drawSingleRect:] | -[WebFrame(WebInternal) _drawRect:contentsOnly:] | WebCore::FrameView::paintContents(WebCore::GraphicsContext*, WebCore::IntRect const&) | WebCore::RenderLayer::paint(WebCore::GraphicsContext*, WebCore::IntRect const&, WebCore::PaintRestriction, WebCore::RenderObject*) | WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, bool, WebCore::PaintRestriction, WebCore::RenderObject*, bool, bool) | WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, bool, WebCore::PaintRestriction, WebCore::RenderObject*, bool, bool) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintChildren(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintChildren(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintChildren(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderFlow::paintLines(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RootInlineBox::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::InlineFlowBox::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::InlineTextBox::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::paintTextWithShadows(WebCore::GraphicsContext*, WebCore::Font const&, WebCore::TextRun const&, int, int, WebCore::IntPoint const&, int, int, int, int, WebCore::ShadowData*, bool) | WebCore::GraphicsContext::drawText(WebCore::Font const&, WebCore::TextRun const&, WebCore::IntPoint const&, int, int) | WebCore::Font::drawSimpleText(WebCore::GraphicsContext*, WebCore::TextRun const&, WebCore::FloatPoint const&, int, int) const | WebCore::Font::drawGlyphBuffer(WebCore::GraphicsContext*, WebCore::GlyphBuffer const&, WebCore::TextRun const&, WebCore::FloatPoint&) const | WebCore::Font::drawGlyphs(WebCore::GraphicsContext*, WebCore::SimpleFontData const*, WebCore::GlyphBuffer const&, int, int, WebCore::FloatPoint const&, bool) const | CGGStateSetFont | maybeCopyTextState | calloc | malloc_zone_calloc ---- FREE 0x800c880-0x800c8a7 [size=40]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | __CFRunLoopDoObservers | CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) | CA::Transaction::commit() | CA::Context::commit_transaction(CA::Transaction*) | CALayerDisplayIfNeeded | -[TileLayer display] | -[CALayer _display] | CABackingStoreUpdate | backing_callback(CGContext*, void*) | WebCore::TiledSurface::drawLayer(CALayer*, CGContext*) | WKWindowDrawRect | WKViewDisplayRect | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | _WKViewDraw(CGContext*, WKView*, CGRect) | -[WebHTMLView drawSingleRect:] | -[WebFrame(WebInternal) _drawRect:contentsOnly:] | WebCore::FrameView::paintContents(WebCore::GraphicsContext*, WebCore::IntRect const&) | WebCore::RenderLayer::paint(WebCore::GraphicsContext*, WebCore::IntRect const&, WebCore::PaintRestriction, WebCore::RenderObject*) | WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, bool, WebCore::PaintRestriction, WebCore::RenderObject*, bool, bool) | WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, bool, WebCore::PaintRestriction, WebCore::RenderObject*, bool, bool) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintChildren(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintChildren(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintChildren(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderBlock::paintObject(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RenderFlow::paintLines(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::RootInlineBox::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::InlineFlowBox::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::InlineTextBox::paint(WebCore::RenderObject::PaintInfo&, int, int) | WebCore::paintTextWithShadows(WebCore::GraphicsContext*, WebCore::Font const&, WebCore::TextRun const&, int, int, WebCore::IntPoint const&, int, int, int, int, WebCore::ShadowData*, bool) | WebCore::GraphicsContext::restorePlatformState() | CGContextRestoreGState | CGGStackRestore | CGGStateRelease | textStateRelease | free ALLOC 0x800c880-0x800c8bf [size=64]: thread_a0a8c4e0 |start | main | UIApplicationMain | GSEventRun | GSEventRunModal | CFRunLoopRunInMode | CFRunLoopRunSpecific | CA::timer_callback(__CFRunLoopTimer*, void*) | run_animation_callbacks(double, void*) | -[UIViewAnimationState animationDidStop:finished:] | -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] | -[UINavigationTransitionView _navigationTransitionDidStop] | -[UIView(Hierarchy) removeFromSuperview] | -[UITextField resignFirstResponder] | -[UIFieldEditor resignFirstResponder] | -[UIKeyboardImpl setDelegate:] | -[UIKeyboardImpl setDelegate:force:] | -[UITextInteractionAssistant setGestureRecognizers] | -[UITextInteractionAssistant addTwoFingerRangedSelectRecognizer] | -[UILongPressGestureRecognizer initWithTarget:action:] | -[__NSPlaceholderSet init] | -[__NSPlaceholderSet initWithCapacity:] | __CFSetInit | _CFRuntimeCreateInstance | malloc_zone_malloc

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• Migrating to CF9: trouble getting JRun working with SSL

  - by DaveBurns

  I have a client on MX7 who wants to migrate to CF9. I have a dev environment for them on my WinXP machine where I've configured MX7 to run with JRun's built-in web server. I've had that working for a long time with both regular and SSL connections. I installed CF9 yesterday side-by-side with the existing MX7 install to start testing. The install was smooth and detected MX7, adjusted CF9's port numbers for no conflict, etc. Testing started well: MX7 over regular and SSL still worked and CF9 worked over regular HTTP. But I can't get CF9 to work with SSL. I installed a new certificate with keytool, FireFox (v3.6) complained about it being unsigned, I added it to the exception list, and now I get this: Secure Connection Failed An error occurred during a connection to localhost:9101. Peer reports it experienced an internal error. (Error code: ssl_error_internal_error_alert) I've been Googling that in all variations but can't find much help to get past this. I don't see any info in any log files either. FWIW, here's my SSL config from SERVER-INF/jrun.xml: <service class="jrun.servlet.http.SSLService" name="SSLService"> <attribute name="enabled">true</attribute>` <attribute name="interface">*</attribute> <attribute name="port">9101</attribute> <attribute name="keyStore">{jrun.rootdir}/lib/mykey</attribute> <attribute name="keyStorePassword">*deleted*</attribute> <attribute name="trustStore">{jrun.rootdir}/lib/trustStore</attribute> <attribute name="socketFactoryName">jrun.servlet.http.JRunSSLServerSocketFactory</attribute> <attribute name="deactivated">false</attribute> <attribute name="bindAddress">*</attribute> <attribute name="clientAuth">false</attribute> </service> Anyone here know of any issues re setting up SSL and CF9? Anyone had success with it? Dave

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• Asus n61Ja notebook bios update

  - by zKs

  I wanted to update the bios, with an official bios update, from version 207 to 211. I didn't use winflash, I used easyflash in the bios. Everything seemed to be going okay; it deleted the old files, wrote the new ones, verified the new ones. Then it said: shutdown in/after 2 seconds and it shut down. Then nothing happened anymore. Power button completely unresponsive. The battery light was still on, and I'm not sure if I should've just waited... I didn't though, I thought I had to remove the battery, take the power off completely to be able to start it up again. So I'm wondering: what are my options here? My warranty expired and I don't really have the money to send it in and pay hundreds of bucks on repairs. Is there anything I can try? CMOS battery reset? Anything??? Please help me out! I would be very grateful :) ps. What was sort of odd btw, was that easyflash said something like that it was an unsigned bios and if I wanted to flash it anymore, if i wanted to 'force' it or something. It was with 100% certainty the correct update from the Asus.com support site, so I didn't take that 'warning' seriously.

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• Migrating to CF9: trouble getting JRun working with SSL

  - by DaveBurns

  I have a client on MX7 who wants to migrate to CF9. I have a dev environment for them on my WinXP machine where I've configured MX7 to run with JRun's built-in web server. I've had that working for a long time with both regular and SSL connections. I installed CF9 yesterday side-by-side with the existing MX7 install to start testing. The install was smooth and detected MX7, adjusted CF9's port numbers for no conflict, etc. Testing started well: MX7 over regular and SSL still worked and CF9 worked over regular HTTP. But I can't get CF9 to work with SSL. I installed a new certificate with keytool, FireFox (v3.6) complained about it being unsigned, I added it to the exception list, and now I get this: Secure Connection Failed An error occurred during a connection to localhost:9101. Peer reports it experienced an internal error. (Error code: ssl_error_internal_error_alert) I've been Googling that in all variations but can't find much help to get past this. I don't see any info in any log files either. FWIW, here's my SSL config from SERVER-INF/jrun.xml: <service class="jrun.servlet.http.SSLService" name="SSLService"> <attribute name="enabled">true</attribute>` <attribute name="interface">*</attribute> <attribute name="port">9101</attribute> <attribute name="keyStore">{jrun.rootdir}/lib/mykey</attribute> <attribute name="keyStorePassword">*deleted*</attribute> <attribute name="trustStore">{jrun.rootdir}/lib/trustStore</attribute> <attribute name="socketFactoryName">jrun.servlet.http.JRunSSLServerSocketFactory</attribute> <attribute name="deactivated">false</attribute> <attribute name="bindAddress">*</attribute> <attribute name="clientAuth">false</attribute> </service> Anyone here know of any issues re setting up SSL and CF9? Anyone had success with it? Dave

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• Win7 Ultimate 64bit not finding my SSD, any ideas?

  - by Jakub

  So I am trying to install Windows 7 Ultimate 64bit on my new SSD (Kingston SNVP325-S2/64GB) and I have unplugged my other drives (for the install only). The SSD is detected by BIOS, I am running the latest Firmware for my motherboard P5N-E SLI (775 socket). Upon getting the Windows 7 install screen, it gives me a 'no drives detected'. I have tried Load Driver and downloding nForce drivers (latest for Win7 64bit signed WHQL) results in a message of (something like) "To continue please click Load Driver and load 32-bit and signed 64-bit drivers... blah blah" ... basically it does NOT accept my nForce SATA drivers, nor my 2ndary SATA drivers (JMicron? can't recall the exact name now). I have tried F8 at loading to 'disable driver signing' in hopes that it was an unsigned driver, however nothing works. The SSD is not detected by the Windos 7 installer. I wasted 4 hours on this last night, and gave up, and got nowhere. Anyone heard / ran into this issue before? How can I get the drive detected? Some more details: - Kingston SNVP325-S2/64GB V+ SSD - ASUS P5N-E SLI MOBO - 8GB RAM A-DATA (memory is checked out and fine)

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• STOP 0x7b booting from iSCSI

  - by Michael

  Hi, I've a Windows 2008 SBS running. It boots of iSCSI. That setup worked for months until yesterday. I intended to reboot and gained a: STOP 0x0000007b INACCESSIBLE_BOOT_DEVICE and no idea why. My setup hasn't changed. No new controller, no new or changed iSCSI targets, no new Network Card or IP address changes. I had all Windows Updates on it. Last known good: same STOP. Allow unsigned drivers: same STOP. Safe mode (all variants): same STOP. Mount target from a client: works. Filesystem check fine. I booted of the SBS DVD but in computer repair options my target doesn't appear. When i choose setup the target appears. So, how can i diagnose what's going wrong? Any helpful tools? Any hints? Thanks in advance Michael

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• Need help with copy constructor for very basic implementation of singly linked lists

  - by Jesus

  Last week, we created a program that manages sets of strings, using classes and vectors. I was able to complete this 100%. This week, we have to replace the vector we used to store strings in our class with simple singly linked lists. The function basically allows users to declare sets of strings that are empty, and sets with only one element. In the main file, there is a vector whose elements are a struct that contain setName and strSet (class). HERE IS MY PROBLEM: It deals with the copy constructor of the class. When I remove/comment out the copy constructor, I can declare as many empty or single sets as I want, and output their values without a problem. But I know I will obviously need the copy constructor for when I implement the rest of the program. When I leave the copy constructor in, I can declare one set, either single or empty, and output its value. But if I declare a 2nd set, and i try to output either of the first two sets, i get a Segmentation Fault. Moreover, if i try to declare more then 2 sets, I get a Segmentation Fault. Any help would be appreciated!! Here is my code for a very basic implementation of everything: Here is the setcalc.cpp: (main file) #include <iostream> #include <cctype> #include <cstring> #include <string> #include "help.h" #include "strset2.h" using namespace std; // Declares of structure to hold all the sets defined struct setsOfStr { string nameOfSet; strSet stringSet; }; // Checks if the set name inputted is unique bool isSetNameUnique( vector<setsOfStr> strSetArr, string setName) { for(unsigned int i = 0; i < strSetArr.size(); i++) { if( strSetArr[i].nameOfSet == setName ) { return false; } } return true; } int main(int argc, char *argv[]) { char commandChoice; // Declares a vector with our declared structure as the type vector<setsOfStr> strSetVec; string setName; string singleEle; // Sets a loop that will constantly ask for a command until 'q' is typed while (1) { // declaring a set to be empty if(commandChoice == 'd') { cin >> setName; // Check that the set name inputted is unique if (isSetNameUnique(strSetVec, setName) == true) { strSet emptyStrSet; setsOfStr set1; set1.nameOfSet = setName; set1.stringSet = emptyStrSet; strSetVec.push_back(set1); } else { cerr << "ERROR: Re-declaration of set '" << setName << "'\n"; } } // declaring a set to be a singleton else if(commandChoice == 's') { cin >> setName; cin >> singleEle; // Check that the set name inputted is unique if (isSetNameUnique(strSetVec, setName) == true) { strSet singleStrSet(singleEle); setsOfStr set2; set2.nameOfSet = setName; set2.stringSet = singleStrSet; strSetVec.push_back(set2); } else { cerr << "ERROR: Re-declaration of set '" << setName << "'\n"; } } // using the output function else if(commandChoice == 'o') { cin >> setName; if(isSetNameUnique(strSetVec, setName) == false) { // loop through until the set name is matched and call output on its strSet for(unsigned int k = 0; k < strSetVec.size(); k++) { if( strSetVec[k].nameOfSet == setName ) { (strSetVec[k].stringSet).output(); } } } else { cerr << "ERROR: No such set '" << setName << "'\n"; } } // quitting else if(commandChoice == 'q') { break; } else { cerr << "ERROR: Ignoring bad command: '" << commandChoice << "'\n"; } } return 0; } Here is the strSet2.h: #ifndef _STRSET_ #define _STRSET_ #include <iostream> #include <vector> #include <string> struct node { std::string s1; node * next; }; class strSet { private: node * first; public: strSet (); // Create empty set strSet (std::string s); // Create singleton set strSet (const strSet &copy); // Copy constructor // will implement destructor later void output() const; strSet& operator = (const strSet& rtSide); // Assignment }; // End of strSet class #endif // _STRSET_ And here is the strSet2.cpp (implementation of class) #include <iostream> #include <vector> #include <string> #include "strset2.h" using namespace std; strSet::strSet() { first = NULL; } strSet::strSet(string s) { node *temp; temp = new node; temp->s1 = s; temp->next = NULL; first = temp; } strSet::strSet(const strSet& copy) { cout << "copy-cst\n"; node *n = copy.first; node *prev = NULL; while (n) { node *newNode = new node; newNode->s1 = n->s1; newNode->next = NULL; if (prev) { prev->next = newNode; } else { first = newNode; } prev = newNode; n = n->next; } } void strSet::output() const { if(first == NULL) { cout << "Empty set\n"; } else { node *temp; temp = first; while(1) { cout << temp->s1 << endl; if(temp->next == NULL) break; temp = temp->next; } } } strSet& strSet::operator = (const strSet& rtSide) { first = rtSide.first; return *this; }

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• How to make Microsoft JVM work on Windows 7?

  - by rics

  I am struggling with the following problem. I cannot install MS JVM 3810 properly on Windows 7. When I start Interner Explorer 8 without starting any java 1.1 programs choosing Java custom settings under Internet options causes the crash of the browser. I have some Java 1.1 programs that work well in Internet Explorer 8 on Windows XP after the installation of MS JVM 3810. I know that it is not advised to use this old JVM but it is not a short-term option to port the programs in newer Java since it contains 3rd party components. Complete rewrite is a long-term plan. Strangely jview and appletviewer (jview /a) works from a console so the MS JVM 3810 is not completely busted just IE 8 does not like it. The problem with the appletviewer is that it cannot connect to the server even if both signed and unsigned content in Java custom settings have been set to Enable all. (Since Java custom settings was unreachable due to the crash the modifications - including My computer - were performed through the registry and pre-checked to behave correctly on Windows XP and Internet Explorer 8.) If jview was working then I could at least think of a workaround. Is there a way to configure MS JVM or jview properly on Windows 7? Another options would be: Checking Internet Explorer 9 Beta. Using virtualbox and Windows XP older IE in it. Delaying Windows 7 upgrade. ... Update Finally we have modified all the programs to work parallelly as applet and application as well. This way the programs can still be used from browser on older Windows versions. On Windows 7 the applications are started from the desktop. Installation to all user machine can easily be solved since they already have a large common application drive. The code update is fortunately only a few lines of modification: including a main method in the applet class. Furthermore instead of the starting html page a bat file is used to set the classpath before the startup with jview.

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• Mysql: create index on 1.4 billion records

  - by SiLent SoNG

  I have a table with 1.4 billion records. The table structure is as follows: CREATE TABLE text_page ( text VARCHAR(255), page_id INT UNSIGNED ) ENGINE=MYISAM DEFAULT CHARSET=ascii The requirement is to create an index over the column text. The table size is about 34G. I have tried to create the index by the following statement: ALTER TABLE text_page ADD KEY ix_text (text) After 10 hours' waiting I finally give up this approach. Is there any workable solution on this problem? UPDATE: the table is unlikely to be updated or inserted or deleted. The reason why to create index on the column text is because this kind of sql query would be frequently executed: SELECT page_id FROM text_page WHERE text = ? UPDATE: I have solved the problem by partitioning the table. The table is partitioned into 40 pieces on column text. Then creating index on the table takes about 1 hours to complete. It seems that MySQL index creation becomes very slow when the table size becomes very big. And partitioning reduces the table into smaller trunks.

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• MySQL Syslog Audit Plugin

  - by jonathonc

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

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• No audio with headphones, but audio works with integrated speakers

  - by Pedro

  My speakers work correctly, but when I plug in my headphones, they don't work. I am running Ubuntu 10.04. My audio card is Realtek ALC259 My laptop model is a HP G62t a10em In another thread someone fixed a similar issue (headphones work, speakers not) folowing this: sudo vi /etc/modprobe.d/alsa-base.conf (or some other editor instead of Vi) Append the following at the end of the file: alias snd-card-0 snd-hda-intel options snd-hda-intel model=auto Reboot but it doesnt work for me. Before making and changes to alsa, this was the output: alsamixer gives me this: Things I did: followed this HowTo but now no hardware seems to be present (before, there were 2 items listed): Now, alsamixer gives me this: alsamixer: relocation error: alsamixer: symbol snd_mixer_get_hctl, version ALSA_0.9 not defined in file libasound.so.2 with link time reference I guess there was and error in the alsa-driver install so I began reinstalling it. cd alsa-driver* //this works fine// sudo ./configure --with-cards=hda-intel --with-kernel=/usr/src/linux-headers-$(uname -r) //this works fine// sudo make //this doesn't work. see ouput error below// sudo make install Final lines of sudo make: hpetimer.c: In function ‘snd_hpet_open’: hpetimer.c:41: warning: implicit declaration of function ‘hpet_register’ hpetimer.c:44: warning: implicit declaration of function ‘hpet_control’ hpetimer.c:44: error: expected expression before ‘unsigned’ hpetimer.c: In function ‘snd_hpet_close’: hpetimer.c:51: warning: implicit declaration of function ‘hpet_unregister’ hpetimer.c:52: error: invalid use of undefined type ‘struct hpet_task’ hpetimer.c: In function ‘hpetimer_init’: hpetimer.c:88: error: ‘EINVAL’ undeclared (first use in this function) hpetimer.c:99: error: invalid use of undefined type ‘struct hpet_task’ hpetimer.c:100: error: invalid use of undefined type ‘struct hpet_task’ hpetimer.c: At top level: hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) hpetimer.c:121: error: extra brace group at end of initializer hpetimer.c:121: error: (near initialization for ‘__param_frequency’) hpetimer.c:121: warning: excess elements in struct initializer hpetimer.c:121: warning: (near initialization for ‘__param_frequency’) make[1]: *** [hpetimer.o] Error 1 make[1]: Leaving directory `/usr/src/alsa/alsa-driver-1.0.9/acore' make: *** [compile] Error 1 And then sudo make install gives me: rm -f /lib/modules/0.0.0/misc/snd*.*o /lib/modules/0.0.0/misc/persist.o /lib/modules/0.0.0/misc/isapnp.o make[1]: Entering directory `/usr/src/alsa/alsa-driver-1.0.9/acore' mkdir -p /lib/modules/0.0.0/misc cp snd-hpet.o snd-page-alloc.o snd-pcm.o snd-timer.o snd.o /lib/modules/0.0.0/misc cp: cannot stat `snd-hpet.o': No such file or directory cp: cannot stat `snd-page-alloc.o': No such file or directory cp: cannot stat `snd-pcm.o': No such file or directory cp: cannot stat `snd-timer.o': No such file or directory cp: cannot stat `snd.o': No such file or directory make[1]: *** [_modinst__] Error 1 make[1]: Leaving directory `/usr/src/alsa/alsa-driver-1.0.9/acore' make: *** [install-modules] Error 1 [SOLUTION] After screwing it all up, someone mentioned why not trying using the packages in Synaptic - so I did. I have reinstalled the following packages and rebooter: -alsa-hda-realtek-ignore-sku-dkms -alsa-modules-2.6.32-25-generic -alsa-source -alsa-utils -linux-backports-modules-alsa-lucid-generic -linux-backports-modules-alsa-lucid-generic-pae -linux-sound-base -(i think i listed them all) After rebooting, the audio worked, both in speakers and headphones. I have no idea which is the package that made my audio work, but it certainly was one of them. [/SOLUTION]

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