Web Application RPM

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Revision as of 16:03, 12 December 2009 by Slords (talk | contribs) (Clean up sample spec a little)
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Generic Instructions for building a Web Application RPM

RPMS make installation more reliable and removal much easier.

This guide aims to create a common structure for building rpms

Build environment

Local Server

Create a build environment on your local server, refer to the SME Server Developer's Guide: How to create a SME Server package - step by step

SME Build Server

When you are comfortable building rpms, you are encouraged to put your source files on the SME Build Server, Package Modification, this allows others to more easily update and improve your rpms.

The Application RPM

Application source

Download the application source, eg foo.tar.gz and place in the SOURCES directory

SPEC file

Edit the following sample .spec file and place in the SPECS directory 

%define name foo
%define version 3.6.431
%define release 1
Summary: foo is a helpdesk system
Name: %{name}
Version: %{version}
Release: %{release}%{?dist}
Distribution: SME Server
License: GNU GPL version 2
URL: http://www.fooweb.com
Group: SMEserver/addon
#wget http://www.fooweb.com/downloads/foo-3.6.431.tar.gz
Source: foo-3.6.431.tar.gz
Packager: Stephen Foo <support@foo.net>
BuildArchitectures: noarch
BuildRoot: /var/tmp/%{name}-%{version}
BuildRequires: e-smith-devtools
Requires: e-smith-release >= 7.0
AutoReqProv: no

%description
http://foo.org/
foo is a helpdesk system 

%changelog
* Thu Sep 13 2007 Stephen Foo <support@foo.net> 3.6.431-1
- initial release
- builds from unchanged .tar.gz 

%prep
%setup  -c -n %{name}

%build
#drop in an unchanged .tgz, if required rename directory here, eg remove version number.
mkdir -p root/opt/
mv %{name} root/opt/foo

%install
rm -rf $RPM_BUILD_ROOT
(cd root   ; find . -depth -print | cpio -dump $RPM_BUILD_ROOT)
rm -f %{name}-%{version}-filelist
/sbin/e-smith/genfilelist $RPM_BUILD_ROOT \
   --dir '/opt/foo/tempdir/' 'attr(775,www,www)' \
   --file '/opt/foo/logo.gif' 'attr(660,www,www)' \
    > %{name}-%{version}-filelist

%clean
cd ..
rm -rf %{name}

%files -f %{name}-%{version}-filelist
%defattr(-,root,root)

Build the RPM

rpmbuild -ba /home/e-smith/files/users/jim/home/rpms/SPECS/foo.spec


Notes

Permissions, may need tweaking but usually not many need changing, you don't want the webserver changing the distribution files.

Check the .spec files of other contribs, see the CVS (SME Contribs)

SME Server Intergration RPM

Create database

  • Create password

root/etc/e-smith/db/configuration/migrate/80foo 

{
   use MIME::Base64 qw(encode_base64);

   my $rec = $DB->get('foo') || $DB->new_record('foo', {type => 'service'});

   my $pw = $rec->prop('DbPassword');
   return "" if $pw;
   $rec->set_prop('DbPassword', MIME::Base64::encode(int( (1000000000000000) * rand() )));
}
  • Create structure

root/etc/e-smith/templates/etc/e-smith/sql/init/80foo 

{
   my $db = $foo{DbName} || 'foo';
   my $user = $foo{DbUser} || 'foo';
   my $pass = $foo{DbPassword} || 'foo';
   $OUT .= <<END
#! /bin/sh
   if [ -d /var/lib/mysql/$db ]; then
     exit
   fi
   /usr/bin/mysql <<EOF
   CREATE DATABASE $db DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
   use $db;
   #Insert application specific command to create database structure
   source /opt/foo/sql/mysql_foo.sql;
   use mysql;
   GRANT ALL PRIVILEGES ON $db.* TO $user\@localhost
           IDENTIFIED BY '$pass';
   flush privileges;
EOF
END
}

See the %build section of the spec file where you create the DB name & user.

The %post section of the spec file run the commands to initialise db values and create the db structure

db defaults

Reserve the foo name in accounts and create default settings in configuration

Create files in these locations, with default values 

root/etc/e-smith/db/accounts/defaults/foo
root/etc/e-smith/db/accounts/defaults/foo/type > reserved

root/etc/e-smith/db/configuration/defaults/foo
root/etc/e-smith/db/configuration/defaults/foo/type           > service
root/etc/e-smith/db/configuration/defaults/foo/Name           > Helpdesk        
root/etc/e-smith/db/configuration/defaults/foo/PublicAccess   > global-pw-remote
root/etc/e-smith/db/configuration/defaults/foo/status         > enabled         
root/etc/e-smith/db/configuration/defaults/foo/DbName         > foo             
root/etc/e-smith/db/configuration/defaults/foo/DbUser         > foo             

root/etc/e-smith/templates.metadata/etc/e-smith/sql/init
root/etc/e-smith/templates.metadata/etc/e-smith/sql/init/80foo  >  PERMS=0750

Webserver templates

  • The alias fragment tailored to suit the application

root/etc/e-smith/templates/etc/httpd/conf/httpd.conf/92foo 

{
    my $status = $foo{'status'} || "disabled";
    return "    # foo is disabled in this VirtualHost"
           unless $status eq 'enabled';

   $OUT = "";
   my $allow = 'all';
   my $pass = '0';
   my $satisfy = 'all';
   my $name = $foo{'Name'} || 'Application Description';
   
   for ('exit-if-none')
   {
     if ($foo{'PublicAccess'})
     {
         if ($foo{'PublicAccess'} eq 'none')
         {
          next;
         }
         elsif ($foo{'PublicAccess'} eq 'local')
         {
           $allow   = $localAccess;
           $pass    = 0;
           $satisfy = 'all';
         }
         elsif ($foo{'PublicAccess'} eq 'local-pw')
         {
           $allow   = $localAccess;
           $pass    = 1;
           $satisfy = 'all';
         }
         elsif ($foo{'PublicAccess'} eq 'global')
         {
           $allow   = 'all';
           $pass    = 0;
           $satisfy = 'all';
         }
         elsif ($foo{'PublicAccess'} eq 'global-pw')
         {
           $allow   = 'all';
           $pass    = 1;
           $satisfy = 'all';
         }
         elsif ($foo{'PublicAccess'} eq 'global-pw-remote')
         {
           $allow   = $localAccess;
           $pass    = 1;
           $satisfy = 'any';
         }
     }
     
     $OUT .= "#------------------------------------------------------------\n";
     $OUT .= "# foo - $name\n";
     $OUT .= "#------------------------------------------------------------\n";
     
     {
       if (exists $foo{'URL'})
       { $OUT .= "Alias  /$foo{'URL'}  /opt/foo\n"; }
     }
     
     $OUT .= "Alias  /foo  /opt/foo\n";
     
     $OUT .= "\n";
     $OUT .= "<Directory /opt/foo>\n";
     $OUT .= "    AddType application/x-httpd-php .php\n";
     $OUT .= "    php_admin_value open_basedir /opt/foo\n";
     $OUT .= "    Options None\n";
     $OUT .= "    order deny,allow\n";
     $OUT .= "    deny from all\n";
     $OUT .= "    allow from $allow\n";
     $OUT .= "    php_value mysql.default_host $foo{DbName}\n";
     $OUT .= "    php_value mysql.default_user $foo{DbUser}\n";
     $OUT .= "    php_value mysql.default_password $foo{DbPassword}\n";
     if ($pass)
     {
         $OUT .= "    AuthName \"$name\"\n";
         $OUT .= "    AuthType Basic\n";
         $OUT .= "    AuthExternal pwauth\n";
         $OUT .= "    require valid-user\n";
         $OUT .= "    Satisfy $satisfy\n";
     }
     $OUT .= "</Directory>\n";
   }
}
  • a hack to get https to work, a better solution is required

root/etc/e-smith/templates/etc/httpd/conf/httpd.conf/VirtualHosts/30FooAlias 

{
   my $status = $foo{'status'} || "disabled";
   return "    # foo is disabled in this VirtualHost"
           unless $status eq 'enabled';

   if ($port eq "443")
   {
      $OUT .= "    ProxyPass /foo http://127.0.0.1/foo\n";
   }
}

System file templates

You may need to create a fragment for a system file such as crontab.

http://wiki.contribs.org/SME_Server:Documentation:Developers_Manual

Application templates

Preferably include the original application config file in the templates directory,
then overwrite key values, some of which we keep in SME DB's

This is not always possible, eg your application modifies the config file
in this case leave the config file untemplated and advise the user how to configure manually.

eg . root\etc\template\opt\foo\config.php

template-begin 

{
   $OUT = <<HERE;
<?php
/*
HERE

   $OUT .= 
   Text::Template::_load_text("/etc/e-smith/templates-default/template-begin");

   $OUT .= <<HERE;
*/
HERE

}

template-end 

?>

10config-dist 

{
   $OUT = "require_once('config.php.dist');";
}

20config-sme 

// SME Server Settings
{
  $OUT .= "\$CFG->dbname   = ini_get\(\'mysql.default_host\'\)\; \n";
  $OUT .= "\$CFG->dbuser   = ini_get\(\'mysql.default_user\'\)\; \n";
  $OUT .= "\$CFG->dbpass   = ini_get\(\'mysql.default_password\'\)\; \n";
  $OUT .= "\$CFG->dirroot  = \'/opt/foo'\; \n";
}

Spec file

%define name smeserver-foo
%define version 1.0
%define release 1
Summary: smserver rpm to setup foo, a foo system
Name: %{name}
Version: %{version}
Release: %{release}%{?dist}
Distribution: SME Server
License: GNU GPL version 2
URL: http://www.foo.net/
Group: SMEserver/addon
Source: %{name}-%{version}.tar.gz
#Patch0: smeserver-foo-1.0-null.patch
Packager: Stephen Foo<support@foo.net>
BuildArchitectures: noarch
BuildRequires: e-smith-devtools >= 1.13.1-03
BuildRoot: /var/tmp/%{name}-%{version}
Requires: e-smith-release >= 7.0
Requires: foo
AutoReqProv: no

%description
smserver rpm to setup foo, a helpdesk system

%changelog
* Thu Sep 13 2007 Stephen Foo<support@foo.net> 1.0-1
- initial release

%prep
%setup
#%patch0 -p1

%build

%install
rm -rf $RPM_BUILD_ROOT
(cd root   ; find . -depth -print | cpio -dump $RPM_BUILD_ROOT)
rm -f %{name}-%{version}-filelist
/sbin/e-smith/genfilelist $RPM_BUILD_ROOT > %{name}-%{version}-filelist
echo "%doc COPYING"  >> %{name}-%{version}-filelist

%clean
cd ..
rm -rf %{name}-%{version} 

%pre
%preun
%post

%postun
#uninstall
if [ $1 = 0 ] ; then
 /sbin/e-smith/expand-template /etc/httpd/conf/httpd.conf
 /usr/bin/sv h /service/httpd-e-smith
 /sbin/e-smith/expand-template /etc/crontab
fi

%files -f %{name}-%{version}-filelist
%defattr(-,root,root)

Further Information

Developer guide

http://wiki.contribs.org/SME_Server:Documentation:Developers_Manual

New DB settings

  • To disable foo. (default is enabled)
config setprop foo status disabled
  • To limit access to foo.
config setprop foo PublicAccess OPTION

OPTION is either of the following. 

       none             => No access
       local            => Local network  (no password required)
       local-pw         => Local network  (password required)
       global           => Entire Internet(no password required)
       global-pw        => Entire Internet(password required)
       global-pw-remote => Entire Internet(password required outside local network)
  • To add a different URL eg. yourserver.net/foo

note, this adds another url, it doesn't remove the default 

config setprop foo URL newfoo
  • To run foo from the root of a domain, This option is buggy to remove
config delprop foo domain

To enable your changes run these commands 

expand-template /etc/httpd/conf/httpd.conf
sv h /service/httpd-e-smith

Related applications

  • eaccelerator

php applications may be faster with eaccelerator

RPM originally prepared for SME by MasterSleepy and is now in the SMEContribs repo.

Retrieved from "https://wiki.koozali.org/index.php?title=Web_Application_RPM&oldid=13901"