Apache 2.4.x Better than rewriting

Posted on by mario

With httpd Apache 2.4.x is is more simple to do stuff than with 2.2.x

Like forcing the www. in front of a domain. Apache now supports the If Elseif Else :-) Pretty nice!
Light example

<If "$req{Host} != 'www.example.com'">
    RedirectMatch (.*) http://www.example.com$1
</If>

Easy, isn’t it?

A bit more old fashion way, so you can use the %{bla} stuff you already know.

<If "%{HTTP_HOST} == 'example.com'">
Redirect permanent / http://www.example.com
</If>

Also nice is the Define Directive.

OK you have to start apache with the -D parameter. Like httpd -D TEST

<IfDefine TEST>
Define servername test.example.com
</IfDefine>
<IfDefine !TEST>
Define servername www.example.com
Define SSL
</IfDefine>

If you have some example, please let me know!

Upgrading OpenSSL on Debian 6 (squeeze) or Ubuntu 8.04 (hardy)

Posted on by mario

The Problem on the long term ubuntu 8.04 and the current stable debian is that they ship the old OpenSSL 0.9.8o With that I wasn’t able to compile the new apache 2.4.1 with all the SSL features I want. Downloading the OpenSSL source and just configure make make install didn’t help at all.

checking whether to enable mod_ssl... checking dependencies 
 checking for OpenSSL... checking for user-provided OpenSSL base directory... none 
 checking for OpenSSL version >= 0.9.7... FAILED 
 configure: WARNING: OpenSSL version is too old 
 no 
 checking whether to enable mod_ssl... configure: error: mod_ssl has been requested but can not be built due to prerequisite failures 
 mario@h2020668:~/apache24/httpd-2.4.1$ openssl version 
 OpenSSL 0.9.8o 01 Jun 2010

The only thing that helped was to use the unix config script plus the right prefix plus the shared option

wget http://openssl.org/source/openssl-1.0.1.tar.gz 
 tar xfz openssl-1.0.1.tar.gz 
 cd openssl-* 
 ./config --prefix=/usr zlib-dynamic --openssldir=/etc/ssl shared 
 make 
 sudo make install

 

Debian is very fine, but sometimes it sucks because of the lag of new software versions

firefox gespeicherte formulardaten löschen

Posted on by mario

firefox gespeicherte formulardaten löschen

einzelne eintraege löschen geht so:

Mit der Eingabe des ersten Buchstabens oder die „nach-unten-taste“ wird eine Auswahl der zur Verfügung stehenden Einträge angezeigt, einer oder mehrere. Gehe mit der „nach-unten-taste“ oder mit dem Mauszeiger auf den zu löschenden Eintrag, ohne ihn anzuklicken, er erscheint dann markiert (dunkel unterlegt). Auf die „Löschen/DEL“-Taste drücken, fertig.

mod_dav_svn from subversion 1.7.x does not build against apache 2.4

Posted on by mario

Since the API in Apache 2.4.x has changed the mod_dav_svn module from svn doesn’t build currently. I made patch for that. There is only a small issue in subversion/mod_dav_svn/util.c

Index: util.c
===================================================================
--- util.c    (revision 1299310)
+++ util.c    (working copy)
@@ -627,8 +627,14 @@
         if (errscan->desc == NULL)
             continue;

-        if (errscan->save_errno != 0) {
+#if AP_MODULE_MAGIC_AT_LEAST(20091119,0)            
+        if (errscan->aprerr != 0) {
+            errno = errscan->aprerr;
+#else
+        if (errscan->save_errno != 0) {
             errno = errscan->save_errno;
+#endif
+
             ap_log_rerror(APLOG_MARK, level, errno, r, "%s  [%d, #%d]",
                           errscan->desc, errscan->status, errscan->error_id);
         }

Now it compiles against Apache 2.2 and Apache 2.4

 

Any feedback is welcome.

Javascript getElmentsByClassName

Posted on by mario

If not having jquery this could be a solution

<script type="text/javascript">
function getElementsByClassName(classname, node)  {
    if(!node) node = document.getElementsByTagName("body")[0];
    var a = [];
    var re = new RegExp('\\b' + classname + '\\b');
    var els = node.getElementsByTagName("*");
    for(var i=0,j=els.length; i<j; i++){
        if(re.test(els[i].className)){
            a.push(els[i]);
        }
    }
    return a;
}
</script>

HTML5 Tags in IE7, IE8

Posted on by mario

To get HTML5 Tags working in Internet Explorer 7 (IE7) and Internet Explorer 8 (IE8), there is a simple workaround. Before the html head  close tag add

<!--[if lt IE 9]>
        <script>
        document.createElement('header');
        document.createElement('nav');
        document.createElement('section');
        document.createElement('article');
        document.createElement('aside');
        document.createElement('footer');
        document.createElement('hgroup');
        </script>
        <![endif]-->
    </head>

and in your css in the very first line(s)

header, nav, section, article, aside, footer, hgroup {
    display: block;
}

 

Than most html5 stuff shall work. Yes, things like input types still don’t work. That’s for sure, but at least the design won’t be broken, if you are using html5.

Jquery IE .html() Error

Posted on by mario

Ein einfacher html code, der per ajax verändert werden soll.

<div><img src="icons/reddotadd.gif" title="Add Page" id="AddPageTrigger" alt="Add Page" style="border:0; cursor:pointer;" /></div>
$("#AddPageTrigger").text("TEXT hier");

schlägt im IE fehl. Warum? Keine Ahnung, aber was funktioniert ist

$("#AddPageTrigger").parent().text("TEXT hier");

Ajax Undzeichen ( &) übertragen

Posted on by mario

Normalerweise gibt es ein Problem beim Übertragen von Daten per AJAX, wenn sich ein & Zeichen in dem zuübertragenden Text / Daten befindet. Das Javascript interpretiert das Undzeichen als Trennzeichen. Alles nach dem & Zeichen wird nicht mehr übertragen. Abhilfe schafft hier die funktion encodeURIComponent

 

var save_data = 'save_text=' + encodeURIComponent($(".edit_textarea").val());
		logging(save_data);
		//return false;
		$.ajax({
			type: 'POST',
			url: 'ajax.php',
			data: save_data,
			success: function (msg){
				console.log('OK: ' + msg);
			},
			error:function (xhr, ajaxOptions, thrownError){
				alert(xhr.status);
				alert(thrownError);
			}
		});

Jetzt kommen die Daten auch an.