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  • Best way to block "comment spam" postings to web forms? [closed]

    - by David Jones
    Possible Duplicate: Make your site anti-bot? I have a custom web form on my PHP-based site. Recently it is getting a regular stream of comment-spam postings from a few specific IP addresses. Question: What is a good way to block a small set of blacklisted IP addresses from accessing my site? I was thinking it should be possible using .htaccess to respond with status code 403 (Forbidden) for all HTTP requests from the blacklisted IP addresses, ... but I am not sure exactly how to do that. If anyone knows the .htaccess syntax needed to accomplish this, ... please let me know. thanks in advance,

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  • is <p> a block-level or inline-level element?

    - by Andor
    hi there, i got a question when i come across the HTML 4.01 DTD: in the strict DTD, a element is defined as <!ELEMENT P - O (%inline;)* -- paragraph --> but somewhat i thought is a block-level, and all(maybe almost) user agents define as a block-level. so, i just wondering, is a block-level or inline-level element. thx.

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  • Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) after apt-get upgrade

    - by Edward
    I'm using Ubuntu 9.1 server edition, I get this error during boot time after I ran sudo apt-get upgrade when checking my kernel version, uname -r returns 2.6.31-14-generic but when i run dpkg -l 'linux-image*' | grep ^.i I cannot find 2.6.31-14 (only contains 2.6.32*) Following the solution in the thread: Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) doesn't work for me I'm running the commands inside the Rescue mode by booting from the Ubuntu 9.1 Installation Disc Do I need to update my kernel and run update-initramfs + update-grub again? If so, how can I update the kernel? apt-get install any linux-headers/image cannot change the uname -r value Thanks!

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  • Access to nested methods when DSL

    - by Vyacheslav Loginov
    class Warcraft def initialize &block instance_eval &block end def method_missing name, *args, &block instance_variable_set("@#{name}".to_sym, args[0]) self.class.send(:define_method, name, proc { instance_variable_get("@#{name}")}) end def game &block @game = Game.new &block end class Game def initialize &block instance_eval &block end def method_missing name, *args, &block instance_variable_set("@#{name}".to_sym, args[0]) self.class.send(:define_method, name, proc { instance_variable_get("@#{name}")}) end end end warcraft = Warcraft.new do name "Warcraft III" battle_net :iccup game do side :sentinels hero "Furion" rune_appear_every 2 end end puts warcraft.inspect # => #<Warcraft:0x00000000be3e80 @name="Warcraft III", @battle_net=:iccup, @game=#<Warcraft::Game:0x000000009c6c38 @side=:sentinels, @hero="Furion", @rune_appear_every=2>> How to access nested methods? puts warcraft.battle_net # => iccup puts warcraft.side #=> #<Proc:[email protected]:9 (lambda)> puts warcraft.game #=> dsl.rb:18:in `instance_eval': block not supplied (ArgumentError) puts warcraft.game.side #=> dsl.rb:18:in `instance_eval': block not supplied (ArgumentError)

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  • Using Mod_Rewrite To Block Referrer Based On Domain Extenstion?

    - by Matt
    I've been in web development for several years now (I'm a student web designer), and recently, I've begun to experiment with mod_rewrite for things like URL shortening. I was wondering, is it possible to block a referrer by domain extension, instead of just by full site, etc.? So, instead of RewriteEngine on # Options +FollowSymlinks RewriteCond %{HTTP_REFERER} examplesite\.com [NC] RewriteRule .* - [F] could you do RewriteEngine on # Options +FollowSymlinks RewriteCond %{HTTP_REFERER} \.com [NC] RewriteRule .* - [F] without the full domain name? Thanks. I'm fairly knowledgeable about other web dev / hosting topics, but mod_rewrite is new to me and Google wasn't helping.

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  • How do I fix the Gparted message : Error while reading block at sector xxx ?

    - by Agmenor
    When I tried to move one of my partitions, I got some error messages. Here are some extracts: Move /dev/sda7 to the left 00:05:09 ( ERROR ) (...) check file system on /dev/sda7 for errors and (if possible) fix them 00:00:10 ( SUCCESS ) e2fsck -f -y -v /dev/sda7 (...) move file system to the left 00:04:52 ( ERROR ) perform read-only test 00:04:52 ( ERROR ) using internal algorithm read 114013242 sectors finding optimal blocksize (...) read 113357882 sectors using a blocksize of 1024 sectors 00:04:36 ( ERROR ) 22527034 of 113357882 read Error while reading block at sector 385849832 23182394 sectors read ( ERROR ) (...) libparted messages ( INFO ) Input/output error during read on /dev/sda What should I do to effectively move my partition?

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  • PHP 5.5 sort en Alpha1 et introduit les générateurs, le block Finally ainsi qu'une API de hachage des mots de passe

    PHP 5.5 sort en Alpha 1 et introduit les générateurs, le block Finally ainsi qu'une API de hachage des mots de passe Le cycle de publication de PHP 5.5.0 vient officiellement de débuter. Les développeurs de la plateforme Web ont publié la première version Alpha de PHP 5.5.0. PHP 5.5.0 apporte des nouvelles fonctionnalités majeures au langage, dont le support des générateurs. Les générateurs sont un moyen simple et puissant de créer des itérateurs. L'introduction des générateurs dans PHP va permettre aux développeurs d'implémenter des itérateurs sans avoir à écrire beaucoup de code décoratif. Le support des générateurs s'accompagne de l'introduction du nouveau mot c...

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  • Possible to pass pygame data to memory map block?

    - by toozie21
    I am building a matrix out of addressable pixels and it will be run by a Pi (over the ethernet bus). The matrix will be 75 pixels wide and 20 pixels tall. As a side project, I thought it would be neat to run pong on it. I've seen some python based pong tutorials for Pi, but the problem is that they want to pass the data out to a screen via pygame.display function. I have access to pass pixel information using a memory map block, so is there anyway to do that with pygame instead of passing it out the video port? In case anyone is curious, this was the pong tutorial I was looking at: Pong Tutorial

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  • How can I programmatically block user input for a given time?

    - by black_puppydog
    As a person working in computer science working offline to avoid facebook and thelike is not always (meaning hardly ever) possible for me since I mostly have to be online to work. I have tried leechblock and similar things but the problem becomes that at some point I start making systems for myself to hack, which is kind of pointless if oyu have root. I would very much like to try out the method described here. (Short version: reboot your PC every time finish a task or get bored with it) Unlike for the author of this blog my work is mainly done not in screen sessions but in IDEs ans other not-so-fast-to-start-up stuff, meaning a full reboot including loading all my programs will take its time. So, the question is: How can I block all user input and preferrably blank the screen for a given amount of time? The idea would then be to have a keyboard shortcut to activate the script/program (which would probably also have to have root i guess?)

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  • Why is simulink data type conversion block altering the data when it should be typecasting?

    - by Nick
    I am attempting to typecast some data from int32 to single. I first tried using the 'Data Type Conversion' block with single output data type and the Stored Integer option. However, I found that the datatype conversion block is not typecasting the data the way I expect it to. Am I using the block incorrectly, or is it failing to work as it should? temp1 (pre conversion): uint32: 1405695244 single: 1728356810752.000000 binary: 01010011110010010011010100001100 temp2 (post conversion): uint32: 1319604842 single: 1405695232.000000 binary: 01001110101001111001001001101010 By the way, I have gotten around the issue by using an embedded Matlab block to perform the typecasting operation.

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  • kernel panic - not syncing vfs unable to mount root fs on unknown-block(1,0) on live cd

    - by sobox studio
    I'm trying to install ubunutu 12.04 on my 2005 PowerMac G5. I've burnt ubuntu-12.04-desktop-powerpc.iso. I try to boot from the live cd. I hit 'enter' to load the live environment. The kernel seems to be fine but then I get this: kernel panic - not syncing vfs unable to mount root fs on unknown-block(1,0) Then it says rebooting in 180........ and hangs. I can't do anything. Any help would be appreciated. Thank you.

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  • In Drupal, can you control block display according to e.g. number of URL parts?

    - by james6848
    I'm having a little trouble controlling page-specific block display in Drupal... My URL's will be of this typical structure: http://www.mysite.co.uk/section-name/sub-page/sub-sub-page The 'section-name' will effectively be fixed, but there will be many sub-pages (far too many to explicitly reference). I need to somehow control block display as follows: One block will show on all pages where URL contains 'section-name/sub-page' but not on pages 'section-name/sub-page/sub-sub-page' Conversely, another block will show on all pages where URL contains 'section-name/sub-page/sub-sub-page' but not on pages 'section-name/sub-page' My only idea is to do a bit of PHP that looks for the string 'section-name' and then also counts URL parts (or even the number of slashes). Not sure how to implement that though :) Your help would be appreciated!

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  • Why can't i define recursive variable in code block?

    - by senia
    Why can't i define a variable recursively in a code block? scala> { | val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} | } <console>:9: error: forward reference extends over definition of value fibs val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} ^ scala> val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} fibs: Stream[Int] = Stream(1, ?) lazy keyword solves this problem, but i can't understand why it works without a code block but throws a compilation error in a code block.

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  • Single statement if block - braces or no? [on hold]

    - by Zannjaminderson
    Which is better/more generally accepted? This: if(condition) { statement; } Or: if(condition) statement; I tend to prefer the first one, because I think it makes it easier to tell what actually belongs in the if block, it saves others from adding the braces later (or creating a bug by forgetting to), and it makes all your if statements uniform instead of some with braces and some without. The second one, however, is still syntactically correct and definitely more compact. I'm curious to see which is more generally preferred by others though.

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  • What are the most common dangerous domains that I should block?

    - by Dalia
    I am trying to configure my wireless router to block domains that are potentially dangerous to privacy, security, and bandwidth-hogs. Is there a list of domains that I can block at the router level? On a machine level, I have set the hosts file from www.mvps.org and that works on my machine. However, I want to implement something at the router level too - so that all computers in my household are somewhat protected.

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  • How to block a specific site's directory in windows?

    - by Creedy
    How can I block a specific directory of a website as e.g. http://example.com/someSite unfortunately the hosts file is not an option since you can only block whole domains there and any "/" just destroys these rules. This is just for my personal protection against visiting some sites too often, while i still have to be able to get to the other sites of that domain (as e.g. example.com/someOtherSite) Would be great if someone knows a solution regarding this topic.

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  • How can I block access to public server IP for OpenSSH in Debian?

    - by VanDerSpar
    I got a Debian server with a public and a private IP in a DMZ. I need to be able to connect to it through SSH on our private side, and then block all access to the public address. Both /etc/hosts.deny and sshd_config seems to only let one block incoming IP addresses. What I really want is to disable SSH connections for the public IP. I've been trying iptables, but I haven't had luck with that neither. Any help is appreciated.

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  • How do I maximize code coverage?

    - by naivedeveloper
    Hey all, the following is a snippet of code taken from the unix ptx utility. I'm attempting to maximize code coverage on this utility, but I am unable to reach the indicated portion of code. Admittedly, I'm not as strong in my C skills as I used to be. The portion of code is indicated with comments, but it is towards the bottom of the block. if (used_length == allocated_length) { allocated_length += (1 << SWALLOW_REALLOC_LOG); block->start = (char *) xrealloc (block->start, allocated_length); } Any help interpreting the indicated portion in order to cover that block would be greatly appreciated. /* Reallocation step when swallowing non regular files. The value is not the actual reallocation step, but its base two logarithm. */ #define SWALLOW_REALLOC_LOG 12 static void swallow_file_in_memory (const char *file_name, BLOCK *block) { int file_handle; /* file descriptor number */ struct stat stat_block; /* stat block for file */ size_t allocated_length; /* allocated length of memory buffer */ size_t used_length; /* used length in memory buffer */ int read_length; /* number of character gotten on last read */ /* As special cases, a file name which is NULL or "-" indicates standard input, which is already opened. In all other cases, open the file from its name. */ bool using_stdin = !file_name || !*file_name || strcmp (file_name, "-") == 0; if (using_stdin) file_handle = STDIN_FILENO; else if ((file_handle = open (file_name, O_RDONLY)) < 0) error (EXIT_FAILURE, errno, "%s", file_name); /* If the file is a plain, regular file, allocate the memory buffer all at once and swallow the file in one blow. In other cases, read the file repeatedly in smaller chunks until we have it all, reallocating memory once in a while, as we go. */ if (fstat (file_handle, &stat_block) < 0) error (EXIT_FAILURE, errno, "%s", file_name); if (S_ISREG (stat_block.st_mode)) { size_t in_memory_size; block->start = (char *) xmalloc ((size_t) stat_block.st_size); if ((in_memory_size = read (file_handle, block->start, (size_t) stat_block.st_size)) != stat_block.st_size) { error (EXIT_FAILURE, errno, "%s", file_name); } block->end = block->start + in_memory_size; } else { block->start = (char *) xmalloc ((size_t) 1 << SWALLOW_REALLOC_LOG); used_length = 0; allocated_length = (1 << SWALLOW_REALLOC_LOG); while (read_length = read (file_handle, block->start + used_length, allocated_length - used_length), read_length > 0) { used_length += read_length; /* Cannot cover from this point...*/ if (used_length == allocated_length) { allocated_length += (1 << SWALLOW_REALLOC_LOG); block->start = (char *) xrealloc (block->start, allocated_length); } /* ...to this point. */ } if (read_length < 0) error (EXIT_FAILURE, errno, "%s", file_name); block->end = block->start + used_length; } /* Close the file, but only if it was not the standard input. */ if (! using_stdin && close (file_handle) != 0) error (EXIT_FAILURE, errno, "%s", file_name); }

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  • Ubuntu 12.04 - syslog showing "SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled"

    - by Tom G
    I have been seeing these random logs in syslog on our production system. There is no XFS setup. Fstab only shows local partitions, only EXT3 . There is nothing in crontabs either. The only file system related package I have installed is 'nfs-kernel-server' Kernel version is 3.2.0-31-generic . kernel: [601730.795990] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled kernel: [601730.798710] SGI XFS Quota Management subsystem kernel: [601730.828493] JFS: nTxBlock = 8192, nTxLock = 65536 kernel: [601730.897024] NTFS driver 2.1.30 [Flags: R/O MODULE]. kernel: [601730.964412] QNX4 filesystem 0.2.3 registered. kernel: [601731.035679] Btrfs loaded os-prober: debug: running /usr/lib/os-probes/mounted/10freedos on mounted /dev/vda1 10freedos: debug: /dev/vda1 is not a FAT partition: exiting os-prober: debug: running /usr/lib/os-probes/mounted/10qnx on mounted /dev/vda1 10qnx: debug: /dev/vda1 is not a QNX4 partition: exiting os-prober: debug: running /usr/lib/os-probes/mounted/20macosx on mounted /dev/vda1 macosx-prober: debug: /dev/vda1 is not an HFS+ partition: exiting os-prober: debug: running /usr/lib/os-probes/mounted/20microsoft on mounted /dev/vda1 20microsoft: debug: /dev/vda1 is not a MS partition: exiting os-prober: debug: running /usr/lib/os-probes/mounted/30utility on mounted /dev/vda1 30utility: debug: /dev/vda1 is not a FAT partition: exiting os-prober: debug: running /usr/lib/os-probes/mounted/40lsb on mounted /dev/vda1 debug: running /usr/lib/os-probes/mounted/70hurd on mounted /dev/vda1 debug: running /usr/lib/os-probes/mounted/80minix on mounted /dev/vda1 debug: running /usr/lib/os-probes/mounted/83haiku on mounted /dev/vda1 83haiku: debug: /dev/vda1 is not a BeFS partition: exiting os-prober: debug: running /usr/lib/os-probes/mounted/90bsd-distro on mounted /dev/vda1 83haikuos-prober: debug: running /usr/lib/os-probes/mounted/90linux-distro on mounted /dev/vda1 os-prober: debug: running /usr/lib/os-probes/mounted/90solaris on mounted /dev/vda1 os-prober: debug: /dev/vda2: is active swap Why would this randomly show up? This also spawns multiple "jfsCommit" processes.

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  • Is This a Valid Way to Use Blocks in Objective-C?

    - by Carter
    I've been building a HTTP client that uses web services to synchronize information between the client and server. I've been using Blocks and NSURLConnection to achieve this on the client side, but I'm getting frequent EXC_BAD_ACCESS crashes in objc_msgSend(). From what I understand, this usually means that a stored block that has fallen off the stack has been called. I think I've coded things correctly to avoid this, but I'm still stuck. Here is conceptually what my code is doing. It starts by calling "synchronizeWithWebServer". That method invokes "listRootObjectsOnServerWithBlock:" which takes in a block to be called when the method returns. "listRootObjectsOnServersWithBlock:" initiates a NSURLConnection to the web server asynchronously. It to expects a block to be called when it returns. Inside that block I want to be able to execute the original Block (so aptly named 'block'). This is only a simplified version of my code. The real synchronization process is more complex but it's mostly more of the same as what you see below. Sometimes the code works perfectly, but about 80% of the time it crashes very early on in the routine. It seems to be more vulnerable to crashing when my data set gets larger. - (void)synchronizeWithWebServer { [self listRootObjectsOnServerWithBlock:^(NSArray *results, NSError *error) { //Iterate over result objects and perform some other similar routines. }]; } - (void)listRootObjectsOnServerWithBlock:(void (^)(NSArray *results, NSError *error))block { //Create NSURLRequest Here //Create connection asynchronously. block = [block copy]; [NSURLConnection sendAsynchronousRequest:urlRequest queue:[NSOperationQueue currentQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error){ //Parse response from web server (stored in NSData *data) NSArray *results = ..... //Call 'block' block(results, error); [block release]; }]; }

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