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  • Filtering bad requests from Apache -> logger -> rsyslog to syslog-ng on a remote logging server possible?

    - by zeyus
    EDIT: Thanks for the help Here is a quick idea of the setup: webserver X In apache httpd.conf: LogFormat "%v %h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" vcombined CustomLog "|/usr/bin/logger -p local6.info -t access " vcombined In rsyslog.conf: *.* @logserver Logserver syslog-ng.conf: ... parser p_apache {csv-parser(columns( "APACHE.VIRTUAL_HOST", "APACHE.CLIENT_IP", "APACHE.IDENT_NAME", "APACHE.USER_NAME", "APACHE.TIMESTAMP", "APACHE.REQUEST_URL", "APACHE.REQUEST_STATUS", "APACHE.CONTENT_LENGTH", "APACHE.REFERER", "APACHE.USER_AGENT", "APACHE.PROCESS_TIME", "APACHE.SERVER_NAME") # flags: # escape-none,escape-backslash,escape-double-char, # strip-whitespace flags(escape-double-char,strip-whitespace) delimiters(" ") quote-pairs('""[]') );}; ... source s_net { udp(ip(0.0.0.0) port(514) so_rcvbuf(1048576)); }; destination hosts_acc { file("/var/log/hosts/$HOST/${APACHE.VIRTUAL_HOST}_acc.log"); }; filter f_apacheacc { facility(local6); }; log { source(s_net); parser(p_apache); filter(f_apacheacc); destination(hosts_acc); }; ... The log's get there just fine, but there are a LOT of logs like the following: -rw------- 1 root root 5726 Apr 6 01:02 xc3\x9d\xc3\x9ed$yA;_acc.log -rw------- 1 root root 23435 Apr 6 01:06 \xc3\x9ed$yA;_acc.log -rw------- 1 root root 745 Apr 6 00:57 xc3\x9ed$yA;_acc.log -rw------- 1 root root 8440 Apr 5 22:50 \xc3\xaf_F\xc3\x95$yA;_acc.log -rw------- 1 root root 3112 Apr 6 00:58 xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA;_acc.log -rw------- 1 root root 4220 Apr 5 22:03 xe2\x80\x98\twd\xc2\xa2\xc2\xb0\xc3\x96$yA;_acc.log -rw------- 1 root root 1055 Apr 5 22:03 xe2\x80\x98\xc2\x9dw\xc3\x94\xc3\xb4T\xc5\x93$yA;_acc.log -rw------- 1 root root 1821 Apr 6 00:58 \xe2\x80\x98\xc3\x9d\xc3\x9ed$yA;_acc.log -rw------- 1 root root 2875 Apr 6 01:02 xe2\x80\x98\xc3\x9d\xc3\x9ed$yA;_acc.log -rw------- 1 root root 3165 Apr 5 22:48 \xe2\x80\x99-w\xc3\xaf_F\xc3\x95$yA;_acc.log -rw------- 1 root root 3165 Apr 5 22:40 \xe2\x80\x99\xe2\x80\x9aw\xe2\x82\xac\xc2\xbd\xe2\x80\x9d($yA;_acc.log -rw------- 1 root root 15825 Apr 5 22:50 xe2\x80\x99\xe2\x80\x9aw\xe2\x82\xac\xc2\xbd\xe2\x80\x9d($yA;_acc.log -rw------- 1 root root 1055 Apr 5 22:39 \xe2\x80\x9aw\xe2\x82\xac\xc2\xbd\xe2\x80\x9d($yA;_acc.log -rw------- 1 root root 2110 Apr 5 22:50 xe2\x80\x9aw\xe2\x82\xac\xc2\xbd\xe2\x80\x9d($yA;_acc.log -rw------- 1 root root 2034 Apr 5 22:50 \xe2\x80\x9d($yA;_acc.log -rw------- 1 root root 4066 Apr 5 22:45 xe2\x80\x9d($yA;_acc.log -rw------- 1 root root 7212 Apr 6 13:30 \xe2\x80\xb9>$yA;_acc.log -rw------- 1 root root 3000 Apr 6 13:25 xe2\x80\xb9>$yA;_acc.log My question is where, and how can I filter these out, I don't want them on the filesystem (But actually I guess it wouldn't be a bad idea to keep them logged, but in their correct VHost file) Here is an example VHost <VirtualHost *:80> ServerAdmin [email protected] ServerName xxx.xx DocumentRoot /var/www/vhosts/xxx <Directory /var/www/vhosts/xxx> AllowOverride All Options All RewriteEngine on </Directory> </VirtualHost> And the default "catch-all" vhost at the bottom of the vhosts config file: <VirtualHost *:80> ServerName default ServerAlias * ServerAlias catchall.xxx.xx DocumentRoot /var/www/vhosts/nodomain <Directory "/var/www/vhosts/nodomain"> Options Indexes FollowSymLinks AllowOverride none Allow from All </Directory> CustomLog /dev/null combined ErrorLog /dev/null </VirtualHost> I had posted this in a related question but It's better in it's own question. Here are some examples from inside the log files r_acc.log: Apr 7 11:16:27 xxxxx access: r PC 5.0; eSobiSubscriber 2.0.4.16; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C)" Apr 7 11:16:28 xxxxx access: r PC 5.0; eSobiSubscriber 2.0.4.16; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C)" ######################## D46-28E2-0FBC95-78798EV\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA;_acc.log: Apr 7 14:54:06 xxxxx access: D46-28E2-0FBC95-78798EV\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; B557000E-F20D-35DD-021A-9824EC-17A4AFV\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; 3BD03D7B-EEFD-83FF-7599-B751AD-6F0A2EV\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; 9CAE0724-D455-0B31-3378-871C11-BBD0A4V\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; C1E24799-3979-2452-81-3BAA0FFD361F5A; 0E701CBC-5832-5AB6-D5-CFBF9BDE863EAA; 464714B1-B3E2-774A-A4-FEA612A46CEE06; 74C817B0-D081-D2CC-6D-C4EF0F1B4F49BB; 1338B1DE-67CD-977C-B35D-1F2C4441DD6A; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 1.1.4322; .NET CLR 3.5.30729; .NET CLR 3.0.30729; OfficeLiveConnector.1.5; OfficeLivePatch.1.3; .NET4.0C; BRI/2)" ######################## V\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA;_acc.log: Apr 7 14:55:04 xxxxx access: V\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; FEEACE4F-092A-1D46-28E2-0FBC95-78798EV\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; B557000E-F20D-35DD-021A-9824EC-17A4AFV\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; 3BD03D7B-EEFD-83FF-7599-B751AD-6F0A2EV\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; 9CAE0724-D455-0B31-3378-871C11-BBD0A4V\xe2\x80\x94w\xe2\x80\x98\xc3\x9d\xc3\x9ed$yA; C1E24799-3979-2452-81-3BAA0FFD361F5A; 0E701CBC-5832-5AB6-D5-CFBF9BDE863EAA; 464714B1-B3E2-774A-A4-FEA612A46CEE06; 74C817B0-D081-D2CC-6D-C4EF0F1B4F49BB; 1338B1DE-67CD-977C-B35D-1F2C4441DD6A; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 1.1.4322; .NET CLR 3.5.30729; .NET CLR 3.0.30729; OfficeLiveConnector.1.5; OfficeLivePatch.1.3; .NET4.0C; BRI/2)" ################### xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA;_acc.log: Apr 7 19:48:39 xxxxx access: xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; 3C12D25C-9D40-91CF-1F40-AC-B1A083426DV-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; D4713FA8-0142-A0C2-4812-BA-E03221005BV-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; 199BAF2A-ECD5-39FA-65C3-E8-B107FAFF08V-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; 384BDA70-9954-7744-05A0-C4-C7D9FEA685V-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; EE7292A9-333C-AF70-5A7F-55-CAA7D0BA39V-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; -AD7D48FA3A55-2A33-D10B-B4B66276D8B8; -166A9C6A2E71-24DF-A192-C8258AA4DE14; -00077C6C84E0-A302-4954-3D6D17C54D31; 3F56C318-EC3C-432B-680F-7E4BB2B852C4; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.21022; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C)" Apr 7 19:48:39 xxxxx access: xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; 3C12D25C-9D40-91CF-1F40-AC-B1A083426DV-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; D4713FA8-0142-A0C2-4812-BA-E03221005BV-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; 199BAF2A-ECD5-39FA-65C3-E8-B107FAFF08V-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; 384BDA70-9954-7744-05A0-C4-C7D9FEA685V-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; EE7292A9-333C-AF70-5A7F-55-CAA7D0BA39V-w\xc2\x90\xc3\x91\xc3\x94\xc2\xab$yA; -AD7D48FA3A55-2A33-D10B-B4B66276D8B8; -166A9C6A2E71-24DF-A192-C8258AA4DE14; -00077C6C84E0-A302-4954-3D6D17C54D31; 3F56C318-EC3C-432B-680F-7E4BB2B852C4; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.5.21022; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C)" Thanks

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  • Cisco access list logging. Why is there a difference between IPv4 and IPv6?

    - by growse
    I've got a Cisco 877 router. I've got an IPv4 access list and an IPv6 access list set up and configured similar to this: interface Dialer1 ... ip access-group INTERET-IN ipv6 traffic-filter IPV6-IN Each of these access lists has a final rule of deny ip/ipv6 any any log. However, in my syslog I notice that there's a difference in formatting between the two types of entries. IPv4 will say: %SEC-6-IPACCESSLOGP: list INTERNET-IN denied udp 88.89.209.63(137) -> 1.2.3.4(137), 1 packet Whereas the IPv6 list will say %IPV6_ACL-6-ACCESSLOGNP: list IPV6-IN/240 denied 59 2001:0:5EF5:79FD:14F9:B773:3EBA:3EE3 (Dialer1) -> 2001:800:1000:0::1, 8 packets Both have broadly the same information, but the IPv6 log entry is missing the protocol type and port, both of which are very useful if I'm trying to troubleshoot connectivity. Why is this? How do I get IPv6 deny logs to display the protocol and port used, if any?

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  • Logging Remote Desktop to Servers via Logon Script or GPO or What?

    - by Nate Bross
    The objective here is to start a simple .NET application I've written which captures some environment variables (time, username, computername, etc) upon login. This .NET application subscribes to the Windows "User logout" event. Upon launch, the application captures the above variables, and creates a record in my database, upon logout (which I'm capturing) I update another field in the same record, with the logout time. The above is working exactly as I would like, when I launch the binary, it makes its initial log entry, then waits for the logout event and updates the same record. Restrictions, the .NET binary should be able to live on a share point (\server\share\myapp\v1) so I can update the application to (\server\share\myapp\v2) and simply update the GPO/Logon script. My initial thought was to use the \domaincontroller\sysvol\ directory to store the binary and then update all user accounts to include a call to my application. Can you see any flaws in this approach? My question is this: First, is there anything wrong with my idea above? Second, if so, what is the best way (through group policy or otherwise) to ensure this application launches whenever a session is started on a server?

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  • Computer crashing after a few minutes of logging in

    - by user88612
    I have a fresh install of 12.04.1 on my machine. It is constantly crashing after logging in. I noticed it crashed repeatedly when using Minitube and would crash in Chrome. It seems to be that anything graphics related is causing it? I've booted the system 7 times and each time it would crash within 5-10 minutes after logging in. I have no swap and it's a dual-boot system with Windows 7. My system specs: AMD Phenom XII 925 8GB DDR3 (new) AMD Radeon HD 7770 GPU (new) Seagate 1TB Barracuda HDD (new) Catalyst Drivers

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  • Understanding 400 Bad Request Exception

    - by imran_ku07
        Introduction:          Why I am getting this exception? What is the cause of this error. Developers are always curious to know the root cause of an exception, even though they found the solution from elsewhere. So what is the reason of this exception (400 Bad Request).The answer is security. Security is an important feature for any application. ASP.NET try to his best to give you more secure application environment as possible. One important security feature is related to URLs. Because there are various ways a hacker can try to access server resource. Therefore it is important to make your application as secure as possible. Fortunately, ASP.NET provides this security by throwing an exception of Bad Request whenever he feels. In this Article I am try to present when ASP.NET feels to throw this exception. You will also see some new ASP.NET 4 features which gives developers some control on this situation.   Description:   http.sys Restrictions:           It is interesting to note that after deploying your application on windows server that runs IIS 6 or higher, the first receptionist of HTTP request is the kernel mode HTTP driver: http.sys. Therefore for completing your request successfully you need to present your validity to http.sys and must pass the http.sys restriction.           Every http request URL must not contain any character from ASCII range of 0x00 to 0x1F, because they are not printable. These characters are invalid because these are invalid URL characters as defined in RFC 2396 of the IETF. But a question may arise that how it is possible to send unprintable character. The answer is that when you send your request from your application in binary format.           Another restriction is on the size of the request. A request containg protocal, server name, headers, query string information and individual headers sent along with the request must not exceed 16KB. Also individual header should not exceed 16KB.           Any individual path segment (the portion of the URL that does not include protocol, server name, and query string, for example, http://a/b/c?d=e,  here the b and c are individual path) must not contain more than 260 characters. Also http.sys disallows URLs that have more than 255 path segments.           If any of the above rules are not follow then you will get 400 Bad Request Exception. The reason for this restriction is due to hack attacks against web servers involve encoding the URL with different character representations.           You can change the default behavior enforced by http.sys using some Registry switches present at HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HTTP\Parameters    ASP.NET Restrictions:           After passing the restrictions enforced by the kernel mode http.sys then the request is handed off to IIS and then to ASP.NET engine and then again request has to pass some restriction from ASP.NET in order to complete it successfully.           ASP.NET only allows URL path lengths to 260 characters(only paths, for example http://a/b/c/d, here path is from a to d). This means that if you have long paths containing 261 characters then you will get the Bad Request exception. This is due to NTFS file-path limit.           Another restriction is that which characters can be used in URL path portion.You can use any characters except some characters because they are called invalid characters in path. Here are some of these invalid character in the path portion of a URL, <,>,*,%,&,:,\,?. For confirming this just right click on your Solution Explorer and Add New Folder and name this File to any of the above character, you will get the message. Files or folders cannot be empty strings nor they contain only '.' or have any of the following characters.....            For checking the above situation i have created a Web Application and put Default.aspx inside A%A folder (created from windows explorer), then navigate to, http://localhost:1234/A%25A/Default.aspx, what i get response from server is the Bad Request exception. The reason is that %25 is the % character which is invalid URL path character in ASP.NET. However you can use these characters in query string.           The reason for these restrictions are due to security, for example with the help of % you can double encode the URL path portion and : is used to get some specific resource from server.   New ASP.NET 4 Features:           It is worth to discuss the new ASP.NET 4 features that provides some control in the hand of developer. Previously we are restricted to 260 characters path length and restricted to not use some of characters, means these characters cannot become the part of the URL path segment.           You can configure maxRequestPathLength and maxQueryStringLength to allow longer or shorter paths and query strings. You can also customize set of invalid character using requestPathInvalidChars, under httpruntime element. This may be the good news for someone who needs to use some above character in their application which was invalid in previous versions. You can find further detail about new ASP.NET features about URL at here           Note that the above new ASP.NET settings will not effect http.sys. This means that you have pass the restriction of http.sys before ASP.NET ever come in to the action. Note also that previous restriction of http.sys is applied on individual path and maxRequestPathLength is applied on the complete path (the portion of the URL that does not include protocol, server name, and query string). For example, if URL is http://a/b/c/d?e=f, then maxRequestPathLength will takes, a/b/c/d, into account while http.sys will take a, b, c individually.   Summary:           Hopefully this will helps you to know how some of initial security features comes in to play, but i also recommend that you should read (at least first chapter called Initial Phases of a Web Request of) Professional ASP.NET 2.0 Security, Membership, and Role Management by Stefan Schackow. This is really a nice book.

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  • When to use a user defined Exception and some good examples/best Practices?

    - by Atomiton
    I would assume that most User-defined Exceptions are for Business Logic level exceptions, but what are some good reasons to use a User-Defined Exception and what are some good examples? Is a user-defined exception's only advantage that you can define a consistent Error Message? What logic can be written inside exceptions to make them truly more useful? After all, can't you just do this: throw new Exception("Some Error Message");

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  • How do I get SpecFlow to expect an exception?

    - by Roger Lipscombe
    I'm using SpecFlow, and I'd like to write a scenario such as the following: Scenario: Pressing add with an empty stack throws an exception Given I have entered nothing into the calculator When I press add Then it should throw an exception It's calculator.Add() that's going to throw an exception, so how do I handle this in the method marked [Then]?

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  • Java: does the EDT restart or not when an exception is thrown?

    - by NoozNooz42
    (the example code below is self-contained and runnable, you can try it, it won't crash your system :) Tom Hawtin commented on the question here: http://stackoverflow.com/questions/3018165 that: It's unlikely that the EDT would crash. Unchecked exceptions thrown in EDT dispatch are caught, dumped and the thread goes on. Can someone explain me what is going on here (every time you click on the "throw an unchecked exception" button, a divide by zero is performed, on purpose): import javax.swing.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; public class CrashEDT extends JFrame { public static void main(String[] args) { final CrashEDT frame = new CrashEDT(); frame.addWindowListener(new WindowAdapter() { public void windowClosing( WindowEvent e) { System.exit(0); } }); final JButton jb = new JButton( "throw an unchecked exception" ); jb.addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { System.out.println( "Thread ID:" + Thread.currentThread().getId() ); System.out.println( 0 / Math.abs(0) ); } } ); frame.add( jb ); frame.setSize(300, 150); frame.setVisible(true); } } I get the following message (which is what I'd expect): Exception in thread "AWT-EventQueue-0" java.lang.ArithmeticException: / by zero and to me this is an unchecked exception right? You can see that the thread ID is getting incremented every time you trigger the crash. So is the EDT automatically restarted every time an unchecked exception is thrown or are unchecked exceptions "caught, dumped and the thread goes on" like Tom Hawtin commented? What is going on here?

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  • How do I get google guice to inject a custom logger, say a commons-logging or log4j logger

    - by Miguel Silva
    Google guice has a built-in logger binding (http://code.google.com/p/google-guice/wiki/BuiltInBindings). But what if I want to use a commons-logging or log4j logger? Can I get guice to inject a Log created by LogFactory.getLog(CLASS.class) But having the same behavior as in built-in binding: The binding automatically sets the logger's name to the name of the class into which the Logger is being injected.. Does it even makes sense? Or shout I simply use the built-in java Logger? Or just use commons-logging without injections?

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  • Can the Perl compiler tell me if I have an unchecked exception in my code?

    - by Konerak
    Is there a way in Perl to declare that a method can throw an error (or die)? EDIT: What interests me the most is a way to get the compiler or IDE to tell me I have an unchecked exception somewhere in my code. I always loved how in Java, a method could handle an Exception and/or throw it. The method signature allows to put "throws MyException", so a good IDE/compiler would know that if you use said method somewhere in your code, you'd have to check for the Exception or declare your function to "throws" the Exception further. I'm unable to find something alike in Perl. A collegue of mine wrote a method which "dies" on incorrect input, but I forget to eval-if($@) it... offcourse the error was only discovered while a user was running the application. (offcourse I doubt if there is any existing IDE that could find these kind of things for Perl, but atleast perl -cw should be able to, no?)

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  • right usage of std::uncaught_exception in a destructor

    - by Vokuhila-Oliba
    There are some articles concluding "never throw an exception from a destructor", and "std::uncaught_exception() is not useful", for example: http://www.gotw.ca/gotw/047.htm (written by Herb Sutter) But it seems that I am not getting the point. So I wrote a small testing example (see below). Since everything is fine with the testing example I would very appreciate some comments regarding what might be wrong with it. testing results: ./main Foo::~Foo(): caught exception - but have pending exception - ignoring int main(int, char**): caught exception: from int Foo::bar(int) ./main 1 Foo::~Foo(): caught exception - but *no* exception is pending - rethrowing int main(int, char**): caught exception: from Foo::~Foo() // file main.cpp // build with e.g. "make main" // tested successfully on Ubuntu-Karmic with g++ v4.4.1 #include <iostream> class Foo { public: int bar(int i) { if (0 == i) throw(std::string("from ") + __PRETTY_FUNCTION__); else return i+1; } ~Foo() { bool exc_pending=std::uncaught_exception(); try { bar(0); } catch (const std::string &e) { // ensure that no new exception has been created in the meantime if (std::uncaught_exception()) exc_pending = true; if (exc_pending) { std::cerr << __PRETTY_FUNCTION__ << ": caught exception - but have pending exception - ignoring" << std::endl; } else { std::cerr << __PRETTY_FUNCTION__ << ": caught exception - but *no* exception is pending - rethrowing" << std::endl; throw(std::string("from ") + __PRETTY_FUNCTION__); } } } }; int main(int argc, char** argv) { try { Foo f; // will throw an exception in Foo::bar() if no arguments given. Otherwise // an exception from Foo::~Foo() is thrown. f.bar(argc-1); } catch (const std::string &e) { std::cerr << __PRETTY_FUNCTION__ << ": caught exception: " << e << std::endl; } return 0; }

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  • Is it possible to have a global exception hook?

    - by Heinrich Ulbricht
    Hi, my code is fairly well covered with exception handling (try..except). Some exceptions are not expected to happen and some exceptions happen fairly often, which is expected and ok. Now I want to add some automated tests for this code. It would be good to know how many exceptions happened during execution, so I can later see if the expected number was raised or anything unexpected happened. I don't want to clutter every exception handling block with debug code, so my question is: Is there a way to install some kind of global exception handler which sits right before all other exception handling blocks? I am searching for a central place to log these exceptions. Thanks for any suggestions! (And if this matters: it is Delphi 2009)

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  • What is the best logging solution for a C# .NET 3.5 project?

    - by Odd
    My team is about to start a new enterprise wide ASP.NET development project, quite possibly the largest undertaken by my department so far and the largest project that I've ever worked on. I'm looking for a good logging solution for the system. Firstly, what logging tools are currently available and widely used? Secondly, for an ASP.NET (probably MVC) enterprise applicaiton, which tool is most appropriate based on your experience? So far I've used Log4net almost exclusively for all my previous projects. It's a fantastic tool, however I would like to see if there is anything I've not used out there before I start a project of this magnitude or if there is any reason I would not want to use Log4net for a project of this size.

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  • Why can't untrusted code change the log level under Java Logging?

    - by cdmckay
    I'm have a Java app that also runs as an applet. The app also happens to use a library called BasicPlayer to play .ogg files. BasicPlayer has a built-in logger that uses Apache Logging Commons to create a logger for BasicPlayer.class using the built-in Java logger. The only way that I know about to turn off the BasicPlayer logging is to run this code: Logger.getLogger(BasicPlayer.class.getName()).setLevel(Level.OFF); This works fine when running as a regular app. However, when running as an applet, this code will throw a SecurityException because for some reason applets can't change the log level of non-anonymous loggers (see here for a sorta-explanation). Why would they do this? Who cares if an applet changes the log level?

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  • what type of errors can we handle using system define unnamed exception in sqlplus?

    - by Aspirant
    I have been trying to access the below code DECLARE N_DEPTNO DEPT.DEPTNO %TYPE :=&DEPT_NUM; V_DNAME DEPT.DNAME %TYPE; NOT_ENOUGH_VALUES EXCEPTION; PRAGMA EXCEPTION_INIT(NOT_ENOUGH_VALUES,-06502); BEGIN SELECT DNAME,LOC INTO DNAME FROM DEPT WHERE DEPTNO = N_DEPTNO; DBMS_OUTPUT.PUT_LINE('Successfully Fetched !!'); EXCEPTION WHEN NOT_ENOUGH_VALUES THEN DBMS_OUTPUT.PUT_LINE('No Enough Values ... '); END; It is still showing error message after specified it in EXCEPTION block. Can i handle these type of errors using PRAGMA EXCEPTION_INIT i.e not providing enough values in the select statement... If not what type of errors can be handled in System Defined Unnamed Exception using PRAGMA EXCEPTION_INIT.

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  • How can I switch off exception handling in MSVC?

    - by Tamara
    Does anybody know how to switch off exception handling option in MSVC? I tried to set the option 'Enable C++ exceptions' to 'NO' and I got warning: warning C4530: C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc I would like to switch off the exception handler, too, but I don't know how. In my application I basically need more speer than stability, therefore I chose switching off the exception handling. I do not have any try/catch blocks, but I do use STL. When I switch the option 'Enable C++ exceptions' to 'NO' is there any way how to get rid of those warnings?

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  • Would I want to throw an exception or an error in this PHP script?

    - by Tower
    Hi, I have a PHP script that runs database queries. Now, if a query fails, should I trigger an error or throw an exception? I noticed that if I do the latter, the script execution will stop after facing the exception. My code is as follows: if (!$this->connection[0]->query($this->query)) throw new Exception($this->connection[0]->error); What are the pros and cons of using exceptions for this kind of cases (failed queries)?

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  • Tomcat6 getting crashed at regular intervals installed in Ubuntu

    - by Milesh Rout
    I have installed Tomcat6 in Ubuntu OS and when I run my web application the server gets crashed at regular intervals. I have tried a lot but not getting the solution. I have increased the memory upto 2048mb but still getting such error. Following is the error I am getting. Any help would be really appreciated. org.apache.tomcat.util.http.Parameters processParametersINFO: Invalid chunk starting at byte [312] and ending at byte [312] with a value of [null] ignoredException in thread "Timer-1" Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0" Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2" Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1" Exception in thread "Timer-2" Exception in thread "http-8080-4" Exception in thread "http-8080-8" Exception in thread "http-8080-17" Exception in thread "org.hibernate.cache.StandardQueryCache.data" Exception in thread "org.hibernate.cache.UpdateTimestampsCache.data" Exception in thread "org.hibernate.cache.StandardQueryCache.data" Exception in thread "org.hibernate.cache.StandardQueryCache.data" Exception in thread "org.hibernate.cache.UpdateTimestampsCache.data" Exception in thread "org.hibernate.cache.StandardQueryCache.data" Exception in thread "org.hibernate.cache.StandardQueryCache.data" Exception in thread "org.hibernate.cache.UpdateTimestampsCache.data" Exception in thread "com.safenet.usermgmt.User.data" Exception in thread "http-8080-7" Exception in thread "http-8080-12" Exception in thread "http-8080-16" Exception in thread "http-8080-14" Exception in thread "http-8080-13" Exception in thread "http-8080-15" Exception in thread "http-8080-6" OpenJDK Client VM warning: Exception java.lang.OutOfMemoryError occurred dispatching signal SIGTERM to handler- the VM may need to be forcibly terminated

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  • nagios3 Error: Could not read object configuration data!

    - by user1493730
    I have a brand new install of nagios3 on ubuntu 12.04. After I log in to the web interface and click any link I get the error: Error: Could not read object configuration data! Here are some things you should check in order to resolve this error: Verify configuration options using the -v command-line option to check for errors. Check the Nagios log file for messages relating to startup or status data errors. I ran it with the -v option and it reported no errors: Total Warnings: 0 Total Errors: 0 Things look okay - No serious problems were detected during the pre-flight check The nagios log and apache error log and debug log all have nothing regarding this. Does anyone know how to turn on logging that will give me some kind of useful error? Or if anyone knows how to fix this specific problem without additional logging, I guess that's okay too. Thanks!

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  • Logging exceptions in WCF with IErrorHandler inside HandleError or ProvideFault?

    - by Dannerbo
    I'm using IErrorHandler to do exception handling in WCF and now I want to log the exceptions, along with the stack trace and the user that caused the exception. I've read everywhere to put the logging in the HandleError method, and not the ProvideFault method. My question is, why? The only way I can see to get the user that caused the exception is: OperationContext.Current.IncomingMessageProperties.Security.ServiceSecurityContext.PrimaryIdentity ...But this only seems to work inside ProvideFault, and not inside HandleError. Is there a way to get the user inside HandleError?

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  • NVIDIA proprietary driver logging me to console instead of GUI

    - by Woozie
    Firstly i want to apologise for any mistakes, English is not my native language. My problem is I can't get NVIDIA proprietary drivers to work. I tried to install it on Ubuntu 12.04.1 32 and 64 bits, Ubuntu 12.10 Beta 2, Linux Mint 13 Cinnamon 64 bits and openSUSE 12.2 64 bits and the error code and symptoms (logging to tty1 instead of GUI logging, low-res bootscreen) are the same for all of these distros. Right, I didn't tell what's the error code. It appears on sudo startx. NVIDIA: could not open the device file /dev/nvidia0 (Input/output error). I know that's the common problem, but I tried to blacklist or even remove the noveau drivers, install NVIDIA driver from repo/from official script/in "Additional drivers", editing xorg.conf and using Xorg -configurate and nvidia-xconfig, actualizing the kernel and entire distro and many, many things that I don't remember. But the problem is even better: entire Cinnamon (Mint) is freezing during the work. I found the error code, which appears during the freeze: Oct 1 20:57:17 WoozieLaptop kernel: [ 308.120176] [drm] nouveau 0000:01:00.0: PFIFO_CACHE_ERROR - Ch 4/1 Mthd 0z0060 Data 0xbcef0201 My Xorg.0.log is here. It was made on Ubuntu 12.04.1 after installing NVIDIA drivers (obviously). inxi -G from Mint: Graphics: Card: NVIDIA GT216 [GeForce GT 240M] X.org: 1.11.3 drivers: (unloaded: nvidia) FAILED: nouveau,vesa,fbdev tty size: 80x25 Advanced Data: N/A for root out of X lspci -k | grep -A2 VGA from Mint: 01:00.0 VGA compatible controller: NVIDIA Corporation GT216 [GeForce GT 240M] (rev a2) Subsystem: Lenovo Device 38ff Kernel driver in use: nvidia My hardware is: Lenovo IdeaPad Y550 Intel C2D T6600 NVIDIA GeForce GT 240M 4 GB of RAM Any help will be appreciated. This problem totally disabled my laptop from daily using. Cheers, Woozie

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  • How to catch exceptions from another program (for logging)?

    - by CuriousCoder
    I am working on a tool that monitors a number of applications and ensures they are always running and in a clean state. Some of these applications have unhandled exceptions which do occur periodically and present the 'send crash report' window. I do not have the source code to these applications. Is there any mechanism I could use to catch the exceptions, or simply identify their exception type, as well as identify the application's main executable file that threw the exception. I'm not trying to do anything crazy like catch and handle it on the applications behalf, I'm simply trying to capture the exception type, log it and then restart the application.

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