Apache Webserver

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Apache Webserver
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Apache Webserver httpd

• Hypertext transfer protocol daemon
• Daemons are applications that run all the time
  listening for a request. When a request is made
  they do something.
• Developed in 1995
• Serves 50 of websites

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HTTPD is Modular

• mod_php is added to allow php to be processed.
• Modules may be added when the application is
  complied
• Modules may be dynamically added after the
  application is complied
• apxs is a tool for managing dynamic modules
• http//httpd.apache.org/docs/1.3/programs/apxs.htm
  l

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Modules in httpd.conf
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Modules

• mod_auth_cas
• http//www.ja-sig.org/wiki/display/CASC/mod_auth_c
  as
• mod_auth_ldap
• http//httpd.apache.org/docs/2.0/mod/mod_auth_ldap
  .html
• mod_proxy_fcgi
• http//mproxyfcgi.sourceforge.net/

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Configuring in httpd.conf

• Httpd.conf is read when httpd starts
• Restart httpd every time you edit httpd.conf
• At all times, refer to the apache documenation
• http//httpd.apache.org/docs/2.2/

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httpd.conf

• ltdirectorygt
• Rules for a folder on the server
• ltlocationgt
• Rules for a url
• ltvirtualhostgt
• Directive that creates additional hosts on your
  httpd instance.
• ltIfModulegt
• Tests of a module is loaded before you attempt to
  configure the module

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ltdirectorygt
Allows server side includes in the specified
folder
Instructs httpd to follow shortcuts in the
filesystem, to ignore .htaccess files, do not
serve any content
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ltlocationgt
Requires AFS login to any URL that has an /AFS in
the path
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ltvirtualhostgt
Creates a virtual host, alert.rpi.edu
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ltIfModulegt
Only runs the re-write rules if mod_rewrite is
loaded
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.htaccess

• Contains instructions, like those found in
  httpd.conf
• File is parsed every time the server requests a
  resource in that folder, or a downstream folder

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In Class Work

• Using mod_rewrite to
• Proxy
• Make neato urls
• Create a httpd servable directory named rewrite

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In Class Work

• Allowing .htaccess files in httpd.conf
• Add the following to httpd.conf
• ltDirectory /path/to/www/rewritegt
• AllowOverride All
• lt/Directorygt
• Restart httpd

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In Class Work

• Create a file named .htaccess in rewrite
• Add
• ltIfModule mod_rewrite.cgt
• RewriteEngine on
• RewriteBase /rewrite/
• RewriteRule (.) http//www.cnn.com/ P
• lt/IfModulegt

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In Class Work

• Go to http//localhost/rewrite
• Rename .htaccess to example1.txt
• Create another file named .htaccess
• ltIfModule mod_rewrite.cgt
• RewriteEngine On
• RewriteRule /(.) index.php?input1
• lt/IfModulegt

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In Class Work

• Create index.php
• echo _GETinput
• Use explode on _GETinput to break the
  input into value key pairs