This thread is for all your simple questions about installing and running Wakaba or Kareha, that just require quick answers. Please don't create new threads for issues like that, post them in here instead.

Before posting, check that the question has not already been answered in this thread, or in the previous two threads:

• http://wakaba.c3.cx/sup/kareha.pl/1141929669/
• http://wakaba.c3.cx/sup/kareha.pl/1192108766/

Also check the documentation: http://wakaba.c3.cx/docs/docs.html

There is also a setup guide by Anon: http://wiki.iiichan.net/index.php?title=Wakaba_and_Kareha_Setup_Guide

Questions about "500 Internal Server Errors" go in this thread: http://wakaba.c3.cx/sup/kareha.pl/1109033191/

>>400
Oh, I thought you wanted ALL of the posts. Try "SELECT COUNT(*) FROM ".SQL_TABLE." WHERE parent=?;" and just put the thread number in the $sth->execute() part.

>>401
Sorry, now I'm really confused. I just want to count the number of comments (from the SQL table "comments") for each parent thread.

>>402
That's exactly what that does. Though if you're doing it all at once, you should probably do what I said in >>399 and calculate them yourself.

>>403
Thanks for the additional clarification. I ended up settling for a basic code that needs to be manually adjusted for each new parent thread, but just in case anyone else is interested:

<?php
$con=mysqli_connect("localhost","USER","PASSWORD","TABLENAME");
if (mysqli_connect_errno($con))
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }

$result1=mysqli_query($con, "SELECT count(*) as total from comments where parent='1'");
$data1=mysqli_fetch_assoc($result1);

?> 

<table>
<tr>
<td>001</td>
<td>
<?php echo $data1['total']; ?>
</td>
</tr>
</table>

>>404
That's not really ideal for multiple reasons. First, why are you using PHP when Wakaba is written in Perl? Second, depending on how many threads you have you could be hitting the database hundreds of times for each user that views the page.

On a side note, thanks to your code, I remembered that my board's thread list does what you wanted, so I thought it might be a good idea to share my code with you, but as I read through I realized I made the same exact mistake as you. Wakaba has a sub routine called count_posts already built in, and I was calling it for each thread

>>405

>why are you using PHP when Wakaba is written in Perl?

Because I know more of PHP. My knowledge of Perl is nonexistent; I've never worked with it before.

>you could be hitting the database hundreds of times for each user that views the page

Fair enough. If this were for a popular imageboard, I wouldn't recommend this method. But in a situation where you only have five posters, this manual method works well. Plus, the table from >>404 is a simplified version of the real masterlist table, which contains multiple elements ('type' and 'description') that can't be automatically generated (as they don't exist outside of the masterlist) so I can't just cycle through the parent threads.

>share my code

Oh, I'd definitely be interested in seeing it if you do fix it. Or just the unfixed code. Curious how other people (who know Perl) tackled this problem.

>>406
To be completely honest, I didn't know Perl or PHP when I started messing around with Wakaba, but I've learned a ton because of the time I spent tinkering.

Anyways, it turns out posting my code isn't as simple as copying in pasting the relevant lines, since I don't know just how much I've changed over the last year. I can try implementing it in a plain version of Wakaba sometime tonight, but until then, you can try to track down what you need in my git https://github.com/marlencrabapple/Glaukaba

>>407
I see. Alright, thanks for the link, I'll poke around once I'm done patching up the rest! And wow, a Summer Glau chan. Good taste.

>>409

You'll probably have better luck asking at some Apache forum.

I can't seem to get the quote feature to work. I have to type the ">>40" or whatever the number would be. When I click on the post number, doesn't put the quote in the comment box. I am using Wakaba. Here is the link to my imageboard. http://pyroneous.com/wakaba

>>411
wakaba.js is missing.

>>412 It is named wakaba3.js, should I rename it?

>>413
No, just make sure its in the right folder or fix your permissions so that its readable.

How should I get rid of the "Board Look" section?

Is there a way to create hyperlinks with WakabaMark? I'm assuming there is with Markdown.

It's the only reason I ever use HTML formatting, and then I have to add <p> tags myself.

>>416
It does it automatically to some degree.

What can I edit so that I can put a constant PHP header on index.html in Kareha?

>>417
But it would be nice to have hyperlink text, maybe something like [[http://example.com|example]].

there would be no point in doing that. it decreases the security of the users and makes hiding spam or malicious urls much simpler.

>>420
You can already do that through the HTML mode, and a lot of spam bots already do (or try to). Plus I doubt many spam bots are set up to use WakabaMark.

It's inconvenient to humans, not robots, and if a human wants to hide a malicious URL that way they already can.

Has anyone made a HTML5 patch/fork before I do it myself?

>>422
Its as simple as changing the doctype for the most part. That said, if you're looking for 100% "valid" html5, then yes, I've done it, along with a ton of other things that might turn you off if you're looking for a barebones experience.

https://github.com/marlencrabapple/Glaukaba

Aside from an option or two missing in global_config.pl, the installation is pretty straightforward, and everything should run as expected. I just installed it myself a week or two ago and it seems to be in a pretty useable state.

I get a software error.

install_driver(mysql) failed: Can't locate DBD/mysql.pm in @INC

As far as I can tell I have installed the thing in my cpanel, so what gives?

Stupid question: is there a reason why no column is set as the primary key in Wakaba? I don't know much about databases, but it seems like that most of web apps do it.

Hi
i have installed kareha, but there are a few problems i am not sure how to deal with.

• When running kareha.pl, i get an error that says

Software error: Can't locate captcha.pl in @INC (@INC contains: . /usr/local/lib/perl5/5.8.8/x86_64-linux /usr/local/lib/perl5/5.8.8 /usr/local/lib/perl5/site_perl/5.8.8/x86_64-linux /usr/local/lib/perl5/site_perl/5.8.8 /usr/local/lib/perl5/site_perl) at kareha.pl line 15, <FILE> line 7.
BEGIN failed--compilation aborted at kareha.pl line 15, <FILE> line 7.
I temporarily fixed this by commenting the line BEGIN { require 'captcha.pl'; }, but I'd like to fix it properly.

• I can't seem to get capcodes to work (trips and secure trips work fine).
• There is no delete or manage button.

Thanks for your help guise.

How stupid would it be to connect to another db for things like session management? I'm thinking that if I offload something that would be hitting the db pretty often so a separate database server (or a tiny sqlite db) it would decrease access times to my main db server without any consequences. Would there be any noticeable overhead or am I missing something really obvious?

>>428

There's no session management, nor any hits to the database at all unless someone posts?

>>429
Sorry I wasn't clear. I'm testing out some stuff I wrote for prevalidating captchas (reCAPTCHA, not the built in one) so you don't have to spend forever uploading an image just to find out you messed up and need to start over. Its pretty simple stuff but of course in most cases it requires an extra db query. After looking into how flood detection and bans are handled its pretty obvious that this would't be that huge of a performance hit, since its pretty much just two extra queries in total, but I'm still curious if offloading it somewhere else (maybe even a simple text file) could improve performance.

besides writing a new .css, what do i have to do to use custom board look?

>>431
In terms of what you HAVE to do that's about it, but you can do a lot more if you really want to.

I'm using waka_utils.pl in another project of mine and I was wondering how safe the templating system is for allowing (paid) users to write their own. If I remember correctly its possible to run code in a template, so I'm kind of wary about just allowing them to access the template system. Is there a way to make it a little more restrictive or am I better off just writing something myself?

>>434
Okay I just tried looking through the compile_template function myself and I think this should take care of it.

if(!$safemode) {
	if($closing) {
		if($name eq 'if') { $code.='}' }
		elsif($name eq 'loop') { $code.='$$_=$__ov{$_} for(keys %__ov);}}' }
	}
	else {
		if($name eq 'var') { $code.='$res.=eval{'.$args.'};' }
		elsif($name eq 'const') { my $const=eval $args; $const=~s/(['\\])/\\$1/g; $code.='$res.=\''.$const.'\';' }
		elsif($name eq 'if') { $code.='if(eval{'.$args.'}){' }
		elsif($name eq 'loop')
		{ $code.='my $__a=eval{'.$args.'};if($__a){for(@$__a){my %__v=%{$_};my %__ov;for(keys %__v){$__ov{$_}=$$_;$$_=$__v{$_};}' }
	}
}
else {
	if(($name eq 'var') and ($args =~ /^\$[a-zA-Z]+$/)) {
		$code .= '$res .= eval{' . $args . '};'
	}
}

Any obvious gaping holes?

>>435
The only obvious gaping hole I can think of is that you've basically just created an overcomplicated sprintf().

>>436
Most of it is part of the templating system already in waka_utils.pl.

>>427
please answer

I'm trying to wrap my head around the templating system a little more, and I can't quite figure out how the variables passed to the constant value that defines the template are in the same scope as compile_template. How would one access the variables available to compile_template? Are they inside of some magical perl variable? I already checked @_ and all that's in their are the contents of the constant.

>>439
Oh wow I think I got it on my own. I put die %__v->{title} inside of the my $sub = eval part and it printed out the value of $title.

How big of a performance hit would it be to change the entire config system from constants to hashes? I'm trying to make it easier to manage multiple boards for less savvy users. Would something like

my $option = sub {
	my ($board,$key) = @_;
	return BOARDS->{$board}->{$key} || GLOBAL_OPTIONS->{$key};
};

for retrieving a config option be a huge performance hit or security risk?

So now I'm trying to change wakaba's setting so that everytime anon post something, he will be redirected to that same thread he posted on. The way user had to go back to front page after every post is annoying to me.

I found the following supposedly related line in wakaba.pl:
# forward back to the main page

make_http_forward(HTML_SELF,ALTERNATE_REDIRECT);

I have zero knowledge with Perl so I hope someone will help me here.

>>442
There's a patch that adds noko support somewhere on this board.

>>443
Oh I see, found it here
http://wakaba.c3.cx/sup/kareha.pl/1256252904/

But I have no idea how to get the patch from there.

>>444
Looks like it got deleted. I went ahead and wrote a new one. No idea if it works. Haven't ran it myself.

>>445
Okay, I added that patch but every time it gave me an internal server error.

I don't know if it's the new script's fault. After that, I tried to change simple stuffs like
BEGIN { require "strings_en.pl"; }
into
BEGIN { require "strings_eng.pl"; }

with strings_eng.pl in the root folder of course. Yet it still give me 500 error.

How do I remove the 'Manage' option in admin bar? The way it is now, every user can see it and I only want admin to access it.

>>447
Delete the link from the template in futabastyle.pl

>>449
Thanks, I feel like a retard now. Should have figured that out myself.

Hi,
I would like to add an ability to wrap text in spoiler tag just like 4chan now. I appreciate your help.

I need help. I enable encoding to utf-8 in the config.pl and made sure to uncomment the no encoding line at the end to write non-English words. Everything works fine at first but I cannot log on to admin panel after that. It gave me Incorrect management password despite whatever it is stated in config.pl.
In fact, if I turned off the encoding lines I could go to admin panel like nothing.

>>453
Okay this is resolved, thanks for your help. For future reference: it appears moving the "use encoding 'utf-8'" to after the constant admin_pass will make it work.

But now there is another problem: the html files (header, rules and footer) won't show my native language whatsoever. I know I'm a noob but Isn't the use encoding line affects to all html files?

Hello!
I'm trying to incorporate wakaba into my SMF page (php forum).
All I'm trying to figure out is how to add this
[code]<?php
//Require header.php
require('../header.php');
?>[/code]
to all of the topic .html files generated. the header.php being required is the header for my forum and is designed to be called as shown. this works in any standard php page. can this work in the perl system?
picture is of a php page fetching the forum header and footer and fetching wakaba.html in the middle. replying to topics redirects to the individual topic html.

I've managed to change the generated page extensions to .php and fetch my form header, but the reply pages (ie: /res/11.php) will not load. the head will load but the body won't and the page is just left blank.
anyone have some insight for me?

I should mention that my main wakaba.php page generated by the wakaba.pl file works just fine, it's just the pages that are linked via "reply"

After I tried to enter to kareha.pl it gives me:
"couldn't create child process: 720002: kareha.pl"

Wrong section, sorry

heres something for anyone interested in redis/perl. i've found that if your imageboard has a lot of images, the find_md5 function gets slower and slower. i've basically loaded all of the hashes as keys in redis and use it to perform the check, its a lot faster. the key is imageboardname:hash and the values are thread,post,file

this isnt a standard patch, my kareha setup is extremely different from stock (i've split all the posting functions from the main script and run that part in memory) but its only a few changes

http://pastebin.com/9ZtN69Az

>>460
How much of an improvement would something like this bring to Wakaba? I've been thinking of throwing memcache or redis support on it and moving some of the static cache to a ramdisk for faster IO but haven't bothered because I have no idea if it would be worth it or not.

>>461 i'm not familiar with wakaba but if it keeps its information in a database then there won't be much improvement. the problem with kareha was it basically looped through a giant log file every time it checked a hash.

i do keep cache files for phpbb in tmpfs, you may see some improvement. it's hard to tell though since linux caches stuff into memory anyway

>>462
Do you know if dynamically building a JSON reponse from a DB cache like redis or memcache every time a user sends a GET request would be any faster or slower than writing to JSON files on a ramdisk every time they're updated? I'm tempted to do both on a clean Wakaba installation and benchmark them, but even then I have no idea how to benchmark something like that properly.

>>463 if i were to do that i'd use elasticsearch as the backend and just ditch the database. it natively outputs json from lucene indexes, supports updates etc.

http://www.elasticsearch.org/overview/elasticsearch

i've contemplated doing something like this myself

Hi all, I'm trying to install kareha on a basic plan server, which has Perl enabled. I'm used to setting up php software, but I don't code myself. I figured Perl files work in a special way, and they have to be put in a separate forlder, like cgi-bin (?) My question is : which files do I have to put there? Is it all .pl files? Then how do I access these files with a browser, since this folder is outside the main /wwww/ directory? Is there anything else I should know?

>>465
I vaguely remember the documentation explicity stating not to put your Perl files in cgi-bin.

So what's up with get_decoded_hashref()? Its used in very few places and as far as I can tell everything wakaba stores in the db has already been through decode_string. What am I missing?

>>467
See http://perldoc.perl.org/perlunicode.html#Porting-code-from-perl-5.6.X.

The charset situation in Wakaba is a confusing mess. IIRC, the wrapper functions are either used to retain compatibility with Perl 5.6, or to retrieve Unicode data from a non-Unicode database, or both. Note how the utf8 pragma isn't used anywhere in the script, while the encoding pragma is used sparsely.

It's been a few years since I've done anything with Wakaba, but I recall having to use get_decoded_hashref() or its arrayref counterpart every time I wanted to retrieve text that might contain Unicode.

>>468
Just noticed that Wakaba doesn't even set the tables it creates as UTF-8. I wonder how much performance I could gain by ditching compatibility for ancient versions of Perl and non-UTF-8 databases...

Where does one find out how to examine file headers like Wakaba does for images? I added webm support to Wakaba and I can't really do much but rely on ffmpeg to tell me if the file is proper or not. So far it works perfectly but I feel like I should just throw random files at ffmpeg and expect nothing to go wrong.

I was considering adding an index. Only reason I haven't yet is because WAHa didn't in the first place, and I'm pretty sure he still knows better than me in most cases.

Not Acceptable

An appropriate representation of the requested resource link could not be found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

I get this when trying to quote with >>number

Any ideas?

>>473
What's your setup like? That doesn't look like an nginx error message so it has to be apache or lighttpd. Do you also get this error when you click on "Last 50 posts"?

>>473
>>474
Just realized I'm assuming you use Kareha. Are you using Wakaba or Kareha?

>>475

I'm using Wakaba. I basically 775'd all the .pl files in the folder's index. Maybe I had to do it wall the files or something?

I'm using wakaba and have a problem with my captcha.

Does anyone else have a problem with Captcha not automatically reloading? After I post, I cannot post again without manually reloading the page and getting a new captcha. If I don't do a manual reload, the captcha stays the same and gives me an error when I try to post again. Is this a browser issue, or something else? I've tried it in Chrome and Firefox, and neither auto-reload the captcha after a post, but the browser does seem to reload because the image and text appear on the page automatically, I just get the same captcha code.

Say I have a persistent version of Kareha. Would caching the log in an array and creating a hash of references to each row in the log with MD5 hashes or IP addresses as keys be an easy to squeeze more performance out of Kareha? If I understand correctly, the hash values shouldn't take up too much extra memory since they're refs, and the array itself shouldn't be any bigger than it would be in plain CGI Kareha. Is there anything I'm missing or misunderstanding?

I have latest version of kareha installed and it takes 2 clicks of the preview button to initiate preview, and in chrome and Safari the default markup is blank with an " undefined " under it until you pick one

>>480
Not sure about the 2 clicks thing but the undefined thing is fixed in https://github.com/marlencrabapple/kareha-psgi/commit/40149edc3f1a7cb9a9f501311b4fe703df415301. Should work in vanilla Kareha verbatim.

Mojibake title. The other text on the page are displayed correctly

Hello. I am deep in trying to run Kareha on an android device. But I am in over my head. First problem is I don't know perl. Second problem is I don't know how to get imagemagick working for android.

So I guess my last recourse is to ask... is anyone willing to try to get this working? I am trying to add on to the Piratebox port for android, which is missing the image-board feature (which on linux is added using kareha).

I got perl working, I think I found an android port of imagemacick, and I think I know how to get the CGI side of things working with the web server piratebox uses...

Anyone interested in helping?

>>483
Interesting idea. I don't know anything about piratebox, but I'm sure any combination busybox and a light web server with CGI support could handle this. Even better, if you can get Perl and cpanminus installed, you can run everything without the need for an outside web server, which is something that I find a lot easier in 2014. I might try it on an old Android phone I have laying around this weekend. I'll let you know what works best on my end.

>>483
here's the easy way to do it:

1. install https://play.google.com/store/apps/details?id=ru.meefik.linuxdeploy.
2. install arch linux.

>>486
I wasn't aware that Wakaba was simply Kareha with a database. Good to know.

I'm having a problem.

Everything is installed correctly (http://freehispa.host-ed.me) But when I try to reply to a specific post (post #1), using >>1 it gives error 403

Forbidden
You don't have permission to access /wakaba.pl on this server.

What am I doing wrong?

Thanks a lot!!

I am trying to use Kareha on Nginx, and the PATH_INFO is not working. Is there a way to modify kareha to using some kind of GET variable instead of pathinfo?

Not sure if anyone would be interested, but I've been refreshing, myself on css lately and made a kareha style based on w3's material design tutorial. Feel free to use/improve it, if you'd like.

http://comfy.cu.cc/kareha/

Is it possible to remove tripcodes entirely?

>>494
Sure. If you don't want to modify the source code you can set "TRIPKEY" in "config.pl" to something like this:
use constant TRIPKEY => "0" x (MAX_FIELD_LENGTH + 1);

For some reason, my Wakaba installation has decided to stop linking thumbnails to the database, or something. Basically, when an image is posted, a thumbnail is generated and placed in the thumb directory, as expected. However, it doesn't display on the board, and instead only shows the "No thumbnail" text. When I do an SQL dump, I notice that the field for where the thumbnail file name would be is simply blank for each entry.

I am using shared hosting (Lithium Hosting), and I really don't know what kind of thumbnailing software they have installed. It's simply worked up until now. With that in mind, anyone know why this would be happening?

Is there any way to receive e-mail when the message is posted on Kareha?

>>498 Yes, by programming that functionality.