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STBlog/system/libraries/User_agent.php at master · ljcode/STBlog · GitHub
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<?php
if
( !
defined
(
'
BASEPATH
'
))
exit
(
'
No direct script access allowed
'
);
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* User Agent Class
*
* Identifies the platform, browser, robot, or mobile devise of the browsing agent
*
* @package CodeIgniter
* @subpackage Libraries
* @category User Agent
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/libraries/user_agent.html
*/
class
CI_User_agent {
var
$
agent
=
NULL
;
var
$
is_browser
=
FALSE
;
var
$
is_robot
=
FALSE
;
var
$
is_mobile
=
FALSE
;
var
$
languages
=
array
();
var
$
charsets
=
array
();
var
$
platforms
=
array
();
var
$
browsers
=
array
();
var
$
mobiles
=
array
();
var
$
robots
=
array
();
var
$
platform
=
''
;
var
$
browser
=
''
;
var
$
version
=
''
;
var
$
mobile
=
''
;
var
$
robot
=
''
;
/**
* Constructor
*
* Sets the User Agent and runs the compilation routine
*
* @access public
* @return void
*/
public
function
__construct
()
{
if
(
isset
(
$
_SERVER
[
'
HTTP_USER_AGENT
'
]))
{
$
this
->
agent
=
trim
(
$
_SERVER
[
'
HTTP_USER_AGENT
'
]);
}
if
( !
is_null
(
$
this
->
agent
))
{
if
(
$
this
->
_load_agent_file
())
{
$
this
->
_compile_data
();
}
}
log_message
(
'
debug
'
,
"
User Agent Class Initialized
"
);
}
// --------------------------------------------------------------------
/**
* Compile the User Agent Data
*
* @access private
* @return bool
*/
private
function
_load_agent_file
()
{
if
(
defined
(
'
ENVIRONMENT
'
)
AND
is_file
(
APPPATH
.
'
config/
'
.
ENVIRONMENT
.
'
/user_agents.php
'
))
{
include
(
APPPATH
.
'
config/
'
.
ENVIRONMENT
.
'
/user_agents.php
'
);
}
elseif
(
is_file
(
APPPATH
.
'
config/user_agents.php
'
))
{
include
(
APPPATH
.
'
config/user_agents.php
'
);
}
else
{
return
FALSE
;
}
$
return
=
FALSE
;
if
(
isset
(
$
platforms
))
{
$
this
->
platforms
=
$
platforms
;
unset(
$
platforms
);
$
return
=
TRUE
;
}
if
(
isset
(
$
browsers
))
{
$
this
->
browsers
=
$
browsers
;
unset(
$
browsers
);
$
return
=
TRUE
;
}
if
(
isset
(
$
mobiles
))
{
$
this
->
mobiles
=
$
mobiles
;
unset(
$
mobiles
);
$
return
=
TRUE
;
}
if
(
isset
(
$
robots
))
{
$
this
->
robots
=
$
robots
;
unset(
$
robots
);
$
return
=
TRUE
;
}
return
$
return
;
}
// --------------------------------------------------------------------
/**
* Compile the User Agent Data
*
* @access private
* @return bool
*/
private
function
_compile_data
()
{
$
this
->
_set_platform
();
foreach
(
array
(
'
_set_robot
'
,
'
_set_browser
'
,
'
_set_mobile
'
)
as
$
function
)
{
if
(
$
this
->
$
function
() ===
TRUE
)
{
break
;
}
}
}
// --------------------------------------------------------------------
/**
* Set the Platform
*
* @access private
* @return mixed
*/
private
function
_set_platform
()
{
if
(
is_array
(
$
this
->
platforms
)
AND
count
(
$
this
->
platforms
) >
0
)
{
foreach
(
$
this
->
platforms
as
$
key
=>
$
val
)
{
if
(
preg_match
(
"
|
"
.
preg_quote
(
$
key
).
"
|i
"
,
$
this
->
agent
))
{
$
this
->
platform
=
$
val
;
return
TRUE
;
}
}
}
$
this
->
platform
=
'
Unknown Platform
'
;
}
// --------------------------------------------------------------------
/**
* Set the Browser
*
* @access private
* @return bool
*/
private
function
_set_browser
()
{
if
(
is_array
(
$
this
->
browsers
)
AND
count
(
$
this
->
browsers
) >
0
)
{
foreach
(
$
this
->
browsers
as
$
key
=>
$
val
)
{
if
(
preg_match
(
"
|
"
.
preg_quote
(
$
key
).
"
.*?([0-9\.]+)|i
"
,
$
this
->
agent
,
$
match
))
{
$
this
->
is_browser
=
TRUE
;
$
this
->
version
=
$
match
[
1
];
$
this
->
browser
=
$
val
;
$
this
->
_set_mobile
();
return
TRUE
;
}
}
}
return
FALSE
;
}
// --------------------------------------------------------------------
/**
* Set the Robot
*
* @access private
* @return bool
*/
private
function
_set_robot
()
{
if
(
is_array
(
$
this
->
robots
)
AND
count
(
$
this
->
robots
) >
0
)
{
foreach
(
$
this
->
robots
as
$
key
=>
$
val
)
{
if
(
preg_match
(
"
|
"
.
preg_quote
(
$
key
).
"
|i
"
,
$
this
->
agent
))
{
$
this
->
is_robot
=
TRUE
;
$
this
->
robot
=
$
val
;
return
TRUE
;
}
}
}
return
FALSE
;
}
// --------------------------------------------------------------------
/**
* Set the Mobile Device
*
* @access private
* @return bool
*/
private
function
_set_mobile
()
{
if
(
is_array
(
$
this
->
mobiles
)
AND
count
(
$
this
->
mobiles
) >
0
)
{
foreach
(
$
this
->
mobiles
as
$
key
=>
$
val
)
{
if
(
FALSE
!== (
strpos
(
strtolower
(
$
this
->
agent
),
$
key
)))
{
$
this
->
is_mobile
=
TRUE
;
$
this
->
mobile
=
$
val
;
return
TRUE
;
}
}
}
return
FALSE
;
}
// --------------------------------------------------------------------
/**
* Set the accepted languages
*
* @access private
* @return void
*/
private
function
_set_languages
()
{
if
((
count
(
$
this
->
languages
) ==
0
)
AND
isset
(
$
_SERVER
[
'
HTTP_ACCEPT_LANGUAGE
'
])
AND
$
_SERVER
[
'
HTTP_ACCEPT_LANGUAGE
'
] !=
''
)
{
$
languages
=
preg_replace
(
'
/(;q=[0-9\.]+)/i
'
,
''
,
strtolower
(
trim
(
$
_SERVER
[
'
HTTP_ACCEPT_LANGUAGE
'
])));
$
this
->
languages
=
explode
(
'
,
'
,
$
languages
);
}
if
(
count
(
$
this
->
languages
) ==
0
)
{
$
this
->
languages
=
array
(
'
Undefined
'
);
}
}
// --------------------------------------------------------------------
/**
* Set the accepted character sets
*
* @access private
* @return void
*/
private
function
_set_charsets
()
{
if
((
count
(
$
this
->
charsets
) ==
0
)
AND
isset
(
$
_SERVER
[
'
HTTP_ACCEPT_CHARSET
'
])
AND
$
_SERVER
[
'
HTTP_ACCEPT_CHARSET
'
] !=
''
)
{
$
charsets
=
preg_replace
(
'
/(;q=.+)/i
'
,
''
,
strtolower
(
trim
(
$
_SERVER
[
'
HTTP_ACCEPT_CHARSET
'
])));
$
this
->
charsets
=
explode
(
'
,
'
,
$
charsets
);
}
if
(
count
(
$
this
->
charsets
) ==
0
)
{
$
this
->
charsets
=
array
(
'
Undefined
'
);
}
}
// --------------------------------------------------------------------
/**
* Is Browser
*
* @access public
* @return bool
*/
public
function
is_browser
(
$
key
=
NULL
)
{
if
( !
$
this
->
is_browser
)
{
return
FALSE
;
}
// No need to be specific, it's a browser
if
(
$
key
===
NULL
)
{
return
TRUE
;
}
// Check for a specific browser
return
array_key_exists
(
$
key
,
$
this
->
browsers
)
AND
$
this
->
browser
===
$
this
->
browsers
[
$
key
];
}
// --------------------------------------------------------------------
/**
* Is Robot
*
* @access public
* @return bool
*/
public
function
is_robot
(
$
key
=
NULL
)
{
if
( !
$
this
->
is_robot
)
{
return
FALSE
;
}
// No need to be specific, it's a robot
if
(
$
key
===
NULL
)
{
return
TRUE
;
}
// Check for a specific robot
return
array_key_exists
(
$
key
,
$
this
->
robots
)
AND
$
this
->
robot
===
$
this
->
robots
[
$
key
];
}
// --------------------------------------------------------------------
/**
* Is Mobile
*
* @access public
* @return bool
*/
public
function
is_mobile
(
$
key
=
NULL
)
{
if
( !
$
this
->
is_mobile
)
{
return
FALSE
;
}
// No need to be specific, it's a mobile
if
(
$
key
===
NULL
)
{
return
TRUE
;
}
// Check for a specific robot
return
array_key_exists
(
$
key
,
$
this
->
mobiles
)
AND
$
this
->
mobile
===
$
this
->
mobiles
[
$
key
];
}
// --------------------------------------------------------------------
/**
* Is this a referral from another site?
*
* @access public
* @return bool
*/
public
function
is_referral
()
{
if
( !
isset
(
$
_SERVER
[
'
HTTP_REFERER
'
])
OR
$
_SERVER
[
'
HTTP_REFERER
'
] ==
''
)
{
return
FALSE
;
}
return
TRUE
;
}
// --------------------------------------------------------------------
/**
* Agent String
*
* @access public
* @return string
*/
public
function
agent_string
()
{
return
$
this
->
agent
;
}
// --------------------------------------------------------------------
/**
* Get Platform
*
* @access public
* @return string
*/
public
function
platform
()
{
return
$
this
->
platform
;
}
// --------------------------------------------------------------------
/**
* Get Browser Name
*
* @access public
* @return string
*/
public
function
browser
()
{
return
$
this
->
browser
;
}
// --------------------------------------------------------------------
/**
* Get the Browser Version
*
* @access public
* @return string
*/
public
function
version
()
{
return
$
this
->
version
;
}
// --------------------------------------------------------------------
/**
* Get The Robot Name
*
* @access public
* @return string
*/
public
function
robot
()
{
return
$
this
->
robot
;
}
// --------------------------------------------------------------------
/**
* Get the Mobile Device
*
* @access public
* @return string
*/
public
function
mobile
()
{
return
$
this
->
mobile
;
}
// --------------------------------------------------------------------
/**
* Get the referrer
*
* @access public
* @return bool
*/
public
function
referrer
()
{
return
( !
isset
(
$
_SERVER
[
'
HTTP_REFERER
'
])
OR
$
_SERVER
[
'
HTTP_REFERER
'
] ==
''
) ?
''
:
trim
(
$
_SERVER
[
'
HTTP_REFERER
'
]);
}
// --------------------------------------------------------------------
/**
* Get the accepted languages
*
* @access public
* @return array
*/
public
function
languages
()
{
if
(
count
(
$
this
->
languages
) ==
0
)
{
$
this
->
_set_languages
();
}
return
$
this
->
languages
;
}
// --------------------------------------------------------------------
/**
* Get the accepted Character Sets
*
* @access public
* @return array
*/
public
function
charsets
()
{
if
(
count
(
$
this
->
charsets
) ==
0
)
{
$
this
->
_set_charsets
();
}
return
$
this
->
charsets
;
}
// --------------------------------------------------------------------
/**
* Test for a particular language
*
* @access public
* @return bool
*/
public
function
accept_lang
(
$
lang
=
'
en
'
)
{
return
(
in_array
(
strtolower
(
$
lang
),
$
this
->
languages
(),
TRUE
));
}
// --------------------------------------------------------------------
/**
* Test for a particular character set
*
* @access public
* @return bool
*/
public
function
accept_charset
(
$
charset
=
'
utf-8
'
)
{
return
(
in_array
(
strtolower
(
$
charset
),
$
this
->
charsets
(),
TRUE
));
}
}
/* End of file User_agent.php */
/* Location: ./system/libraries/User_agent.php */
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