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phpbb3/phpBB/includes/message_parser.php at develop · sayedather/phpbb3 · GitHub
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<?php
/**
*
* @package phpBB3
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
* @ignore
*/
if
(!
defined
(
'
IN_PHPBB
'
))
{
exit
;
}
if
(!
class_exists
(
'
bbcode
'
))
{
include
(
$
phpbb_root_path
.
'
includes/bbcode.
'
.
$
phpEx
);
}
/**
* BBCODE FIRSTPASS
* BBCODE first pass class (functions for parsing messages for db storage)
* @package phpBB3
*/
class
bbcode_firstpass
extends
bbcode
{
var
$
message
=
''
;
var
$
warn_msg
=
array
();
var
$
parsed_items
=
array
();
/**
* Parse BBCode
*/
function
parse_bbcode
()
{
if
(!
$
this
->
bbcodes
)
{
$
this
->
bbcode_init
();
}
global
$
user
;
$
this
->
bbcode_bitfield
=
''
;
$
bitfield
=
new
bitfield
();
foreach
(
$
this
->
bbcodes
as
$
bbcode_name
=>
$
bbcode_data
)
{
if
(
isset
(
$
bbcode_data
[
'
disabled
'
]) &&
$
bbcode_data
[
'
disabled
'
])
{
foreach
(
$
bbcode_data
[
'
regexp
'
]
as
$
regexp
=>
$
replacement
)
{
if
(
preg_match
(
$
regexp
,
$
this
->
message
))
{
$
this
->
warn_msg
[] =
sprintf
(
$
user
->
lang
[
'
UNAUTHORISED_BBCODE
'
] ,
'
[
'
.
$
bbcode_name
.
'
]
'
);
continue
;
}
}
}
else
{
foreach
(
$
bbcode_data
[
'
regexp
'
]
as
$
regexp
=>
$
replacement
)
{
// The pattern gets compiled and cached by the PCRE extension,
// it should not demand recompilation
if
(
preg_match
(
$
regexp
,
$
this
->
message
))
{
$
this
->
message
=
preg_replace
(
$
regexp
,
$
replacement
,
$
this
->
message
);
$
bitfield
->
set
(
$
bbcode_data
[
'
bbcode_id
'
]);
}
}
}
}
$
this
->
bbcode_bitfield
=
$
bitfield
->
get_base64
();
}
/**
* Prepare some bbcodes for better parsing
*/
function
prepare_bbcodes
()
{
// Ok, seems like users instead want the no-parsing of urls, smilies, etc. after and before and within quote tags being tagged as "not a bug".
// Fine by me ;) Will ease our live... but do not come back and cry at us, we won't hear you.
/* Add newline at the end and in front of each quote block to prevent parsing errors (urls, smilies, etc.)
if (strpos($this->message, '[quote') !== false && strpos($this->message, '[/quote]') !== false)
{
$this->message = str_replace("\r\n", "\n", $this->message);
// We strip newlines and spaces after and before quotes in quotes (trimming) and then add exactly one newline
$this->message = preg_replace('#\[quote(=".*?")?\]\s*(.*?)\s*\[/quote\]#siu', '[quote\1]' . "\n" . '\2' ."\n[/quote]", $this->message);
}
*/
// Add other checks which needs to be placed before actually parsing anything (be it bbcodes, smilies, urls...)
}
/**
* Init bbcode data for later parsing
*/
function
bbcode_init
(
$
allow_custom_bbcode
=
true
)
{
static
$
rowset
;
// This array holds all bbcode data. BBCodes will be processed in this
// order, so it is important to keep [code] in first position and
// [quote] in second position.
// To parse multiline URL we enable dotall option setting only for URL text
// but not for link itself, thus [url][/url] is not affected.
$
this
->
bbcodes
=
array
(
'
code
'
=>
array
(
'
bbcode_id
'
=>
8
,
'
regexp
'
=>
array
(
'
#\[code(?:=([a-z]+))?\](.+\[/code\])#uise
'
=>
"\$
this->bbcode_code('
\$
1', '
\$
2')
"
)),
'
quote
'
=>
array
(
'
bbcode_id
'
=>
0
,
'
regexp
'
=>
array
(
'
#\[quote(?:="(.*?)")?\](.+)\[/quote\]#uise
'
=>
"\$
this->bbcode_quote('
\$
0')
"
)),
'
attachment
'
=>
array
(
'
bbcode_id
'
=>
12
,
'
regexp
'
=>
array
(
'
#\[attachment=([0-9]+)\](.*?)\[/attachment\]#uise
'
=>
"\$
this->bbcode_attachment('
\$
1', '
\$
2')
"
)),
'
b
'
=>
array
(
'
bbcode_id
'
=>
1
,
'
regexp
'
=>
array
(
'
#\[b\](.*?)\[/b\]#uise
'
=>
"\$
this->bbcode_strong('
\$
1')
"
)),
'
i
'
=>
array
(
'
bbcode_id
'
=>
2
,
'
regexp
'
=>
array
(
'
#\[i\](.*?)\[/i\]#uise
'
=>
"\$
this->bbcode_italic('
\$
1')
"
)),
'
url
'
=>
array
(
'
bbcode_id
'
=>
3
,
'
regexp
'
=>
array
(
'
#\[url(=(.*))?\](?(1)((?s).*(?-s))|(.*))\[/url\]#uiUe
'
=>
"\$
this->validate_url('
\$
2', ('
\$
3') ? '
\$
3' : '
\$
4')
"
)),
'
img
'
=>
array
(
'
bbcode_id
'
=>
4
,
'
regexp
'
=>
array
(
'
#\[img\](.*)\[/img\]#uiUe
'
=>
"\$
this->bbcode_img('
\$
1')
"
)),
'
size
'
=>
array
(
'
bbcode_id
'
=>
5
,
'
regexp
'
=>
array
(
'
#\[size=([\-\+]?\d+)\](.*?)\[/size\]#uise
'
=>
"\$
this->bbcode_size('
\$
1', '
\$
2')
"
)),
'
color
'
=>
array
(
'
bbcode_id
'
=>
6
,
'
regexp
'
=>
array
(
'
!\[color=(#[0-9a-f]{3}|#[0-9a-f]{6}|[a-z\-]+)\](.*?)\[/color\]!uise
'
=>
"\$
this->bbcode_color('
\$
1', '
\$
2')
"
)),
'
u
'
=>
array
(
'
bbcode_id
'
=>
7
,
'
regexp
'
=>
array
(
'
#\[u\](.*?)\[/u\]#uise
'
=>
"\$
this->bbcode_underline('
\$
1')
"
)),
'
list
'
=>
array
(
'
bbcode_id
'
=>
9
,
'
regexp
'
=>
array
(
'
#\[list(?:=(?:[a-z0-9]|disc|circle|square))?].*\[/list]#uise
'
=>
"\$
this->bbcode_parse_list('
\$
0')
"
)),
'
email
'
=>
array
(
'
bbcode_id
'
=>
10
,
'
regexp
'
=>
array
(
'
#\[email=?(.*?)?\](.*?)\[/email\]#uise
'
=>
"\$
this->validate_email('
\$
1', '
\$
2')
"
)),
'
flash
'
=>
array
(
'
bbcode_id
'
=>
11
,
'
regexp
'
=>
array
(
'
#\[flash=([0-9]+),([0-9]+)\](.*?)\[/flash\]#uie
'
=>
"\$
this->bbcode_flash('
\$
1', '
\$
2', '
\$
3')
"
))
);
// Zero the parsed items array
$
this
->
parsed_items
=
array
();
foreach
(
$
this
->
bbcodes
as
$
tag
=>
$
bbcode_data
)
{
$
this
->
parsed_items
[
$
tag
] =
0
;
}
if
(!
$
allow_custom_bbcode
)
{
return
;
}
if
(!
is_array
(
$
rowset
))
{
global
$
db
;
$
rowset
=
array
();
$
sql
=
'
SELECT *
FROM
'
.
BBCODES_TABLE
;
$
result
=
$
db
->
sql_query
(
$
sql
);
while
(
$
row
=
$
db
->
sql_fetchrow
(
$
result
))
{
$
rowset
[] =
$
row
;
}
$
db
->
sql_freeresult
(
$
result
);
}
foreach
(
$
rowset
as
$
row
)
{
$
this
->
bbcodes
[
$
row
[
'
bbcode_tag
'
]] =
array
(
'
bbcode_id
'
=> (
int
)
$
row
[
'
bbcode_id
'
],
'
regexp
'
=>
array
(
$
row
[
'
first_pass_match
'
] =>
str_replace
(
'
$uid
'
,
$
this
->
bbcode_uid
,
$
row
[
'
first_pass_replace
'
]))
);
}
}
/**
* Making some pre-checks for bbcodes as well as increasing the number of parsed items
*/
function
check_bbcode
(
$
bbcode
, &
$
in
)
{
// when using the /e modifier, preg_replace slashes double-quotes but does not
// seem to slash anything else
$
in
=
str_replace
(
"\r\n"
,
"\n"
,
str_replace
(
'
\"
'
,
'
"
'
,
$
in
));
// Trimming here to make sure no empty bbcodes are parsed accidently
if
(
trim
(
$
in
) ==
''
)
{
return
false
;
}
$
this
->
parsed_items
[
$
bbcode
]++;
return
true
;
}
/**
* Transform some characters in valid bbcodes
*/
function
bbcode_specialchars
(
$
text
)
{
$
str_from
=
array
(
'
<
'
,
'
>
'
,
'
[
'
,
'
]
'
,
'
.
'
,
'
:
'
);
$
str_to
=
array
(
'
<
'
,
'
>
'
,
'
[
'
,
'
]
'
,
'
.
'
,
'
:
'
);
return
str_replace
(
$
str_from
,
$
str_to
,
$
text
);
}
/**
* Parse size tag
*/
function
bbcode_size
(
$
stx
,
$
in
)
{
global
$
user
,
$
config
;
if
(!
$
this
->
check_bbcode
(
'
size
'
,
$
in
))
{
return
$
in
;
}
if
(
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_font_size
'
] &&
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_font_size
'
] <
$
stx
)
{
$
this
->
warn_msg
[] =
$
user
->
lang
(
'
MAX_FONT_SIZE_EXCEEDED
'
, (
int
)
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_font_size
'
]);
return
'
[size=
'
.
$
stx
.
'
]
'
.
$
in
.
'
[/size]
'
;
}
// Do not allow size=0
if
(
$
stx
<=
0
)
{
return
'
[size=
'
.
$
stx
.
'
]
'
.
$
in
.
'
[/size]
'
;
}
return
'
[size=
'
.
$
stx
.
'
:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
in
.
'
[/size:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse color tag
*/
function
bbcode_color
(
$
stx
,
$
in
)
{
if
(!
$
this
->
check_bbcode
(
'
color
'
,
$
in
))
{
return
$
in
;
}
return
'
[color=
'
.
$
stx
.
'
:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
in
.
'
[/color:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse u tag
*/
function
bbcode_underline
(
$
in
)
{
if
(!
$
this
->
check_bbcode
(
'
u
'
,
$
in
))
{
return
$
in
;
}
return
'
[u:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
in
.
'
[/u:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse b tag
*/
function
bbcode_strong
(
$
in
)
{
if
(!
$
this
->
check_bbcode
(
'
b
'
,
$
in
))
{
return
$
in
;
}
return
'
[b:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
in
.
'
[/b:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse i tag
*/
function
bbcode_italic
(
$
in
)
{
if
(!
$
this
->
check_bbcode
(
'
i
'
,
$
in
))
{
return
$
in
;
}
return
'
[i:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
in
.
'
[/i:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse img tag
*/
function
bbcode_img
(
$
in
)
{
global
$
user
,
$
config
;
if
(!
$
this
->
check_bbcode
(
'
img
'
,
$
in
))
{
return
$
in
;
}
$
in
=
trim
(
$
in
);
$
error
=
false
;
$
in
=
str_replace
(
'
'
,
'
%20
'
,
$
in
);
// Checking urls
if
(!
preg_match
(
'
#^
'
.
get_preg_expression
(
'
url
'
) .
'
$#i
'
,
$
in
) && !
preg_match
(
'
#^
'
.
get_preg_expression
(
'
www_url
'
) .
'
$#i
'
,
$
in
))
{
return
'
[img]
'
.
$
in
.
'
[/img]
'
;
}
// Try to cope with a common user error... not specifying a protocol but only a subdomain
if
(!
preg_match
(
'
#^[a-z0-9]+://#i
'
,
$
in
))
{
$
in
=
'
http://
'
.
$
in
;
}
if
(
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
] ||
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
])
{
$
stats
= @
getimagesize
(
htmlspecialchars_decode
(
$
in
));
if
(
$
stats
===
false
)
{
$
error
=
true
;
$
this
->
warn_msg
[] =
$
user
->
lang
[
'
UNABLE_GET_IMAGE_SIZE
'
];
}
else
{
if
(
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
] &&
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
] <
$
stats
[
1
])
{
$
error
=
true
;
$
this
->
warn_msg
[] =
$
user
->
lang
(
'
MAX_IMG_HEIGHT_EXCEEDED
'
, (
int
)
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
]);
}
if
(
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
] &&
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
] <
$
stats
[
0
])
{
$
error
=
true
;
$
this
->
warn_msg
[] =
$
user
->
lang
(
'
MAX_IMG_WIDTH_EXCEEDED
'
, (
int
)
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
]);
}
}
}
if
(
$
error
||
$
this
->
path_in_domain
(
$
in
))
{
return
'
[img]
'
.
$
in
.
'
[/img]
'
;
}
return
'
[img:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
this
->
bbcode_specialchars
(
$
in
) .
'
[/img:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse flash tag
*/
function
bbcode_flash
(
$
width
,
$
height
,
$
in
)
{
global
$
user
,
$
config
;
if
(!
$
this
->
check_bbcode
(
'
flash
'
,
$
in
))
{
return
$
in
;
}
$
in
=
trim
(
$
in
);
$
error
=
false
;
// Do not allow 0-sizes generally being entered
if
(
$
width
<=
0
||
$
height
<=
0
)
{
return
'
[flash=
'
.
$
width
.
'
,
'
.
$
height
.
'
]
'
.
$
in
.
'
[/flash]
'
;
}
$
in
=
str_replace
(
'
'
,
'
%20
'
,
$
in
);
// Make sure $in is a URL.
if
(!
preg_match
(
'
#^
'
.
get_preg_expression
(
'
url
'
) .
'
$#i
'
,
$
in
) &&
!
preg_match
(
'
#^
'
.
get_preg_expression
(
'
www_url
'
) .
'
$#i
'
,
$
in
))
{
return
'
[flash=
'
.
$
width
.
'
,
'
.
$
height
.
'
]
'
.
$
in
.
'
[/flash]
'
;
}
// Apply the same size checks on flash files as on images
if
(
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
] ||
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
])
{
if
(
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
] &&
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
] <
$
height
)
{
$
error
=
true
;
$
this
->
warn_msg
[] =
$
user
->
lang
(
'
MAX_FLASH_HEIGHT_EXCEEDED
'
, (
int
)
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_height
'
]);
}
if
(
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
] &&
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
] <
$
width
)
{
$
error
=
true
;
$
this
->
warn_msg
[] =
$
user
->
lang
(
'
MAX_FLASH_WIDTH_EXCEEDED
'
, (
int
)
$
config
[
'
max_
'
.
$
this
->
mode
.
'
_img_width
'
]);
}
}
if
(
$
error
||
$
this
->
path_in_domain
(
$
in
))
{
return
'
[flash=
'
.
$
width
.
'
,
'
.
$
height
.
'
]
'
.
$
in
.
'
[/flash]
'
;
}
return
'
[flash=
'
.
$
width
.
'
,
'
.
$
height
.
'
:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
this
->
bbcode_specialchars
(
$
in
) .
'
[/flash:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse inline attachments [ia]
*/
function
bbcode_attachment
(
$
stx
,
$
in
)
{
if
(!
$
this
->
check_bbcode
(
'
attachment
'
,
$
in
))
{
return
$
in
;
}
return
'
[attachment=
'
.
$
stx
.
'
:
'
.
$
this
->
bbcode_uid
.
'
]<!-- ia
'
.
$
stx
.
'
-->
'
.
trim
(
$
in
) .
'
<!-- ia
'
.
$
stx
.
'
-->[/attachment:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
/**
* Parse code text from code tag
* @access private
*/
function
bbcode_parse_code
(
$
stx
, &
$
code
)
{
switch
(
strtolower
(
$
stx
))
{
case
'
php
'
:
$
remove_tags
=
false
;
$
str_from
=
array
(
'
<
'
,
'
>
'
,
'
[
'
,
'
]
'
,
'
.
'
,
'
:
'
,
'
:
'
);
$
str_to
=
array
(
'
<
'
,
'
>
'
,
'
[
'
,
'
]
'
,
'
.
'
,
'
:
'
,
'
:
'
);
$
code
=
str_replace
(
$
str_from
,
$
str_to
,
$
code
);
if
(!
preg_match
(
'
/\<\?.*?\?\>/is
'
,
$
code
))
{
$
remove_tags
=
true
;
$
code
=
"
<?php
$
code
?>
"
;
}
$
conf
=
array
(
'
highlight.bg
'
,
'
highlight.comment
'
,
'
highlight.default
'
,
'
highlight.html
'
,
'
highlight.keyword
'
,
'
highlight.string
'
);
foreach
(
$
conf
as
$
ini_var
)
{
@
ini_set
(
$
ini_var
,
str_replace
(
'
highlight.
'
,
'
syntax
'
,
$
ini_var
));
}
// Because highlight_string is specialcharing the text (but we already did this before), we have to reverse this in order to get correct results
$
code
=
htmlspecialchars_decode
(
$
code
);
$
code
=
highlight_string
(
$
code
,
true
);
$
str_from
=
array
(
'
<span style="color:
'
,
'
<font color="syntax
'
,
'
</font>
'
,
'
<code>
'
,
'
</code>
'
,
'
[
'
,
'
]
'
,
'
.
'
,
'
:
'
);
$
str_to
=
array
(
'
<span class="
'
,
'
<span class="syntax
'
,
'
</span>
'
,
''
,
''
,
'
[
'
,
'
]
'
,
'
.
'
,
'
:
'
);
if
(
$
remove_tags
)
{
$
str_from
[] =
'
<span class="syntaxdefault"><?php </span>
'
;
$
str_to
[] =
''
;
$
str_from
[] =
'
<span class="syntaxdefault"><?php
'
;
$
str_to
[] =
'
<span class="syntaxdefault">
'
;
}
$
code
=
str_replace
(
$
str_from
,
$
str_to
,
$
code
);
$
code
=
preg_replace
(
'
#^(<span class="[a-z_]+">)\n?(.*?)\n?(</span>)$#is
'
,
'
$1$2$3
'
,
$
code
);
if
(
$
remove_tags
)
{
$
code
=
preg_replace
(
'
#(<span class="[a-z]+">)?\?>(</span>)#
'
,
'
$1 $2
'
,
$
code
);
}
$
code
=
preg_replace
(
'
#^<span class="[a-z]+"><span class="([a-z]+)">(.*)</span></span>#s
'
,
'
<span class="$1">$2</span>
'
,
$
code
);
$
code
=
preg_replace
(
'
#(?:\s++| )*+</span>$#u
'
,
'
</span>
'
,
$
code
);
// remove newline at the end
if
(!
empty
(
$
code
) &&
substr
(
$
code
, -
1
) ==
"\n"
)
{
$
code
=
substr
(
$
code
,
0
, -
1
);
}
return
"
[code=
$
stx
:
"
.
$
this
->
bbcode_uid
.
'
]
'
.
$
code
.
'
[/code:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
break
;
default
:
return
'
[code:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
this
->
bbcode_specialchars
(
$
code
) .
'
[/code:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
break
;
}
}
/**
* Parse code tag
* Expects the argument to start right after the opening [code] tag and to end with [/code]
*/
function
bbcode_code
(
$
stx
,
$
in
)
{
if
(!
$
this
->
check_bbcode
(
'
code
'
,
$
in
))
{
return
$
in
;
}
// We remove the hardcoded elements from the code block here because it is not used in code blocks
// Having it here saves us one preg_replace per message containing [code] blocks
// Additionally, magic url parsing should go after parsing bbcodes, but for safety those are stripped out too...
$
htm_match
=
get_preg_expression
(
'
bbcode_htm
'
);
unset(
$
htm_match
[
4
],
$
htm_match
[
5
]);
$
htm_replace
=
array
(
'
\1
'
,
'
\1
'
,
'
\2
'
,
'
\1
'
);
$
out
=
$
code_block
=
''
;
$
open
=
1
;
while
(
$
in
)
{
// Determine position and tag length of next code block
preg_match
(
'
#(.*?)(\[code(?:=([a-z]+))?\])(.+)#is
'
,
$
in
,
$
buffer
);
$
pos
= (
isset
(
$
buffer
[
1
])) ?
strlen
(
$
buffer
[
1
]) :
false
;
$
tag_length
= (
isset
(
$
buffer
[
2
])) ?
strlen
(
$
buffer
[
2
]) :
false
;
// Determine position of ending code tag
$
pos2
=
stripos
(
$
in
,
'
[/code]
'
);
// Which is the next block, ending code or code block
if
(
$
pos
!==
false
&&
$
pos
<
$
pos2
)
{
// Open new block
if
(!
$
open
)
{
$
out
.=
substr
(
$
in
,
0
,
$
pos
);
$
in
=
substr
(
$
in
,
$
pos
);
$
stx
= (
isset
(
$
buffer
[
3
])) ?
$
buffer
[
3
] :
''
;
$
code_block
=
''
;
}
else
{
// Already opened block, just append to the current block
$
code_block
.=
substr
(
$
in
,
0
,
$
pos
) . ((
isset
(
$
buffer
[
2
])) ?
$
buffer
[
2
] :
''
);
$
in
=
substr
(
$
in
,
$
pos
);
}
$
in
=
substr
(
$
in
,
$
tag_length
);
$
open
++;
}
else
{
// Close the block
if
(
$
open
==
1
)
{
$
code_block
.=
substr
(
$
in
,
0
,
$
pos2
);
$
code_block
=
preg_replace
(
$
htm_match
,
$
htm_replace
,
$
code_block
);
// Parse this code block
$
out
.=
$
this
->
bbcode_parse_code
(
$
stx
,
$
code_block
);
$
code_block
=
''
;
$
open
--;
}
else
if
(
$
open
)
{
// Close one open tag... add to the current code block
$
code_block
.=
substr
(
$
in
,
0
,
$
pos2
+
7
);
$
open
--;
}
else
{
// end code without opening code... will be always outside code block
$
out
.=
substr
(
$
in
,
0
,
$
pos2
+
7
);
}
$
in
=
substr
(
$
in
,
$
pos2
+
7
);
}
}
// if now $code_block has contents we need to parse the remaining code while removing the last closing tag to match up.
if
(
$
code_block
)
{
$
code_block
=
substr
(
$
code_block
,
0
, -
7
);
$
code_block
=
preg_replace
(
$
htm_match
,
$
htm_replace
,
$
code_block
);
$
out
.=
$
this
->
bbcode_parse_code
(
$
stx
,
$
code_block
);
}
return
$
out
;
}
/**
* Parse list bbcode
* Expects the argument to start with a tag
*/
function
bbcode_parse_list
(
$
in
)
{
if
(!
$
this
->
check_bbcode
(
'
list
'
,
$
in
))
{
return
$
in
;
}
// $tok holds characters to stop at. Since the string starts with a '[' we'll get everything up to the first ']' which should be the opening [list] tag
$
tok
=
'
]
'
;
$
out
=
'
[
'
;
// First character is [
$
in
=
substr
(
$
in
,
1
);
$
list_end_tags
=
$
item_end_tags
=
array
();
do
{
$
pos
=
strlen
(
$
in
);
for
(
$
i
=
0
,
$
tok_len
=
strlen
(
$
tok
);
$
i
<
$
tok_len
; ++
$
i
)
{
$
tmp_pos
=
strpos
(
$
in
,
$
tok
[
$
i
]);
if
(
$
tmp_pos
!==
false
&&
$
tmp_pos
<
$
pos
)
{
$
pos
=
$
tmp_pos
;
}
}
$
buffer
=
substr
(
$
in
,
0
,
$
pos
);
$
tok
=
$
in
[
$
pos
];
$
in
=
substr
(
$
in
,
$
pos
+
1
);
if
(
$
tok
==
'
]
'
)
{
// if $tok is ']' the buffer holds a tag
if
(
strtolower
(
$
buffer
) ==
'
/list
'
&&
sizeof
(
$
list_end_tags
))
{
// valid [/list] tag, check nesting so that we don't hit false positives
if
(
sizeof
(
$
item_end_tags
) &&
sizeof
(
$
item_end_tags
) >=
sizeof
(
$
list_end_tags
))
{
// current li tag has not been closed
$
out
=
preg_replace
(
'
/\n?\[$/
'
,
'
[
'
,
$
out
) .
array_pop
(
$
item_end_tags
) .
'
][
'
;
}
$
out
.=
array_pop
(
$
list_end_tags
) .
'
]
'
;
$
tok
=
'
[
'
;
}
else
if
(
preg_match
(
'
#^list(=[0-9a-z]+)?$#i
'
,
$
buffer
,
$
m
))
{
// sub-list, add a closing tag
if
(
empty
(
$
m
[
1
]) ||
preg_match
(
'
/^=(?:disc|square|circle)$/i
'
,
$
m
[
1
]))
{
array_push
(
$
list_end_tags
,
'
/list:u:
'
.
$
this
->
bbcode_uid
);
}
else
{
array_push
(
$
list_end_tags
,
'
/list:o:
'
.
$
this
->
bbcode_uid
);
}
$
out
.=
'
list
'
.
substr
(
$
buffer
,
4
) .
'
:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
$
tok
=
'
[
'
;
}
else
{
if
((
$
buffer
==
'
*
'
||
substr
(
$
buffer
, -
2
) ==
'
[*
'
) &&
sizeof
(
$
list_end_tags
))
{
// the buffer holds a bullet tag and we have a [list] tag open
if
(
sizeof
(
$
item_end_tags
) >=
sizeof
(
$
list_end_tags
))
{
if
(
substr
(
$
buffer
, -
2
) ==
'
[*
'
)
{
$
out
.=
substr
(
$
buffer
,
0
, -
2
) .
'
[
'
;
}
// current li tag has not been closed
if
(
preg_match
(
'
/\n\[$/
'
,
$
out
,
$
m
))
{
$
out
=
preg_replace
(
'
/\n\[$/
'
,
'
[
'
,
$
out
);
$
buffer
=
array_pop
(
$
item_end_tags
) .
"
]
\n
[*:
"
.
$
this
->
bbcode_uid
;
}
else
{
$
buffer
=
array_pop
(
$
item_end_tags
) .
'
][*:
'
.
$
this
->
bbcode_uid
;
}
}
else
{
$
buffer
=
'
*:
'
.
$
this
->
bbcode_uid
;
}
$
item_end_tags
[] =
'
/*:m:
'
.
$
this
->
bbcode_uid
;
}
else
if
(
$
buffer
==
'
/*
'
)
{
array_pop
(
$
item_end_tags
);
$
buffer
=
'
/*:
'
.
$
this
->
bbcode_uid
;
}
$
out
.=
$
buffer
.
$
tok
;
$
tok
=
'
[]
'
;
}
}
else
{
// Not within a tag, just add buffer to the return string
$
out
.=
$
buffer
.
$
tok
;
$
tok
= (
$
tok
==
'
[
'
) ?
'
]
'
:
'
[]
'
;
}
}
while
(
$
in
);
// do we have some tags open? close them now
if
(
sizeof
(
$
item_end_tags
))
{
$
out
.=
'
[
'
.
implode
(
'
][
'
,
$
item_end_tags
) .
'
]
'
;
}
if
(
sizeof
(
$
list_end_tags
))
{
$
out
.=
'
[
'
.
implode
(
'
][
'
,
$
list_end_tags
) .
'
]
'
;
}
return
$
out
;
}
/**
* Parse quote bbcode
* Expects the argument to start with a tag
*/
function
bbcode_quote
(
$
in
)
{
global
$
config
,
$
user
;
/**
* If you change this code, make sure the cases described within the following reports are still working:
* #3572 - [quote="[test]test"]test [ test[/quote] - (correct: parsed)
* #14667 - [quote]test[/quote] test ] and [ test [quote]test[/quote] (correct: parsed)
* #14770 - [quote="["]test[/quote] (correct: parsed)
* [quote="[i]test[/i]"]test[/quote] (correct: parsed)
* [quote="[quote]test[/quote]"]test[/quote] (correct: parsed - Username displayed as [quote]test[/quote])
* #20735 - [quote]test[/[/b]quote] test [/quote][/quote] test - (correct: quoted: "test[/[/b]quote] test" / non-quoted: "[/quote] test" - also failed if layout distorted)
* #40565 - [quote="a"]a[/quote][quote="a]a[/quote] (correct: first quote tag parsed, second quote tag unparsed)
*/
$
in
=
str_replace
(
"\r\n"
,
"\n"
,
str_replace
(
'
\"
'
,
'
"
'
,
trim
(
$
in
)));
if
(!
$
in
)
{
return
''
;
}
// To let the parser not catch tokens within quote_username quotes we encode them before we start this...
$
in
=
preg_replace
(
'
#quote="(.*?)"\]#ie
'
,
"
'quote="' . str_replace(array('[', ']', '
\\\"
'), array('[', ']', '
\"
'), '
\$
1') . '"]'
"
,
$
in
);
$
tok
=
'
]
'
;
$
out
=
'
[
'
;
$
in
=
substr
(
$
in
,
1
);
$
close_tags
=
$
error_ary
=
array
();
$
buffer
=
''
;
do
{
$
pos
=
strlen
(
$
in
);
for
(
$
i
=
0
,
$
tok_len
=
strlen
(
$
tok
);
$
i
<
$
tok_len
; ++
$
i
)
{
$
tmp_pos
=
strpos
(
$
in
,
$
tok
[
$
i
]);
if
(
$
tmp_pos
!==
false
&&
$
tmp_pos
<
$
pos
)
{
$
pos
=
$
tmp_pos
;
}
}
$
buffer
.=
substr
(
$
in
,
0
,
$
pos
);
$
tok
=
$
in
[
$
pos
];
$
in
=
substr
(
$
in
,
$
pos
+
1
);
if
(
$
tok
==
'
]
'
)
{
if
(
strtolower
(
$
buffer
) ==
'
/quote
'
&&
sizeof
(
$
close_tags
) &&
substr
(
$
out
, -
1
,
1
) ==
'
[
'
)
{
// we have found a closing tag
$
out
.=
array_pop
(
$
close_tags
) .
'
]
'
;
$
tok
=
'
[
'
;
$
buffer
=
''
;
/* Add space at the end of the closing tag if not happened before to allow following urls/smilies to be parsed correctly
* Do not try to think for the user. :/ Do not parse urls/smilies if there is no space - is the same as with other bbcodes too.
* Also, we won't have any spaces within $in anyway, only adding up spaces -> #10982
if (!$in || $in[0] !== ' ')
{
$out .= ' ';
}*/
}
else
if
(
preg_match
(
'
#^quote(?:="(.*?)")?$#is
'
,
$
buffer
,
$
m
) &&
substr
(
$
out
, -
1
,
1
) ==
'
[
'
)
{
$
this
->
parsed_items
[
'
quote
'
]++;
// the buffer holds a valid opening tag
if
(
$
config
[
'
max_quote_depth
'
] &&
sizeof
(
$
close_tags
) >=
$
config
[
'
max_quote_depth
'
])
{
// there are too many nested quotes
$
error_ary
[
'
quote_depth
'
] =
$
user
->
lang
(
'
QUOTE_DEPTH_EXCEEDED
'
, (
int
)
$
config
[
'
max_quote_depth
'
]);
$
out
.=
$
buffer
.
$
tok
;
$
tok
=
'
[]
'
;
$
buffer
=
''
;
continue
;
}
array_push
(
$
close_tags
,
'
/quote:
'
.
$
this
->
bbcode_uid
);
if
(
isset
(
$
m
[
1
]) &&
$
m
[
1
])
{
$
username
=
str_replace
(
array
(
'
[
'
,
'
]
'
),
array
(
'
[
'
,
'
]
'
),
$
m
[
1
]);
$
username
=
preg_replace
(
'
#\[(?!b|i|u|color|url|email|/b|/i|/u|/color|/url|/email)#iU
'
,
'
[$1
'
,
$
username
);
$
end_tags
=
array
();
$
error
=
false
;
preg_match_all
(
'
#\[((?:/)?(?:[a-z]+))#i
'
,
$
username
,
$
tags
);
foreach
(
$
tags
[
1
]
as
$
tag
)
{
if
(
$
tag
[
0
] !=
'
/
'
)
{
$
end_tags
[] =
'
/
'
.
$
tag
;
}
else
{
$
end_tag
=
array_pop
(
$
end_tags
);
$
error
= (
$
end_tag
!=
$
tag
) ?
true
:
false
;
}
}
if
(
$
error
)
{
$
username
=
$
m
[
1
];
}
$
out
.=
'
quote="
'
.
$
username
.
'
":
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
else
{
$
out
.=
'
quote:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
$
tok
=
'
[
'
;
$
buffer
=
''
;
}
else
if
(
preg_match
(
'
#^quote="(.*?)#is
'
,
$
buffer
,
$
m
))
{
// the buffer holds an invalid opening tag
$
buffer
.=
'
]
'
;
}
else
{
$
out
.=
$
buffer
.
$
tok
;
$
tok
=
'
[]
'
;
$
buffer
=
''
;
}
}
else
{
/**
* Old quote code working fine, but having errors listed in bug #3572
*
* $out .= $buffer . $tok;
* $tok = ($tok == '[') ? ']' : '[]';
* $buffer = '';
*/
$
out
.=
$
buffer
.
$
tok
;
if
(
$
tok
==
'
[
'
)
{
// Search the text for the next tok... if an ending quote comes first, then change tok to []
$
pos1
=
stripos
(
$
in
,
'
[/quote
'
);
// If the token ] comes first, we change it to ]
$
pos2
=
strpos
(
$
in
,
'
]
'
);
// If the token [ comes first, we change it to [
$
pos3
=
strpos
(
$
in
,
'
[
'
);
if
(
$
pos1
!==
false
&& (
$
pos2
===
false
||
$
pos1
<
$
pos2
) && (
$
pos3
===
false
||
$
pos1
<
$
pos3
))
{
$
tok
=
'
[]
'
;
}
else
if
(
$
pos3
!==
false
&& (
$
pos2
===
false
||
$
pos3
<
$
pos2
))
{
$
tok
=
'
[
'
;
}
else
{
$
tok
=
'
]
'
;
}
}
else
{
$
tok
=
'
[]
'
;
}
$
buffer
=
''
;
}
}
while
(
$
in
);
$
out
.=
$
buffer
;
if
(
sizeof
(
$
close_tags
))
{
$
out
.=
'
[
'
.
implode
(
'
][
'
,
$
close_tags
) .
'
]
'
;
}
foreach
(
$
error_ary
as
$
error_msg
)
{
$
this
->
warn_msg
[] =
$
error_msg
;
}
return
$
out
;
}
/**
* Validate email
*/
function
validate_email
(
$
var1
,
$
var2
)
{
$
var1
=
str_replace
(
"\r\n"
,
"\n"
,
str_replace
(
'
\"
'
,
'
"
'
,
trim
(
$
var1
)));
$
var2
=
str_replace
(
"\r\n"
,
"\n"
,
str_replace
(
'
\"
'
,
'
"
'
,
trim
(
$
var2
)));
$
txt
=
$
var2
;
$
email
= (
$
var1
) ?
$
var1
:
$
var2
;
$
validated
=
true
;
if
(!
preg_match
(
'
/^
'
.
get_preg_expression
(
'
email
'
) .
'
$/i
'
,
$
email
))
{
$
validated
=
false
;
}
if
(!
$
validated
)
{
return
'
[email
'
. ((
$
var1
) ?
"
=
$
var1
"
:
''
) .
'
]
'
.
$
var2
.
'
[/email]
'
;
}
$
this
->
parsed_items
[
'
email
'
]++;
if
(
$
var1
)
{
$
retval
=
'
[email=
'
.
$
this
->
bbcode_specialchars
(
$
email
) .
'
:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
txt
.
'
[/email:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
else
{
$
retval
=
'
[email:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
this
->
bbcode_specialchars
(
$
email
) .
'
[/email:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
return
$
retval
;
}
/**
* Validate url
*
* @param string $var1 optional url parameter for url bbcode: [url(=$var1)]$var2[/url]
* @param string $var2 url bbcode content: [url(=$var1)]$var2[/url]
*/
function
validate_url
(
$
var1
,
$
var2
)
{
global
$
config
;
$
var1
=
str_replace
(
"\r\n"
,
"\n"
,
str_replace
(
'
\"
'
,
'
"
'
,
trim
(
$
var1
)));
$
var2
=
str_replace
(
"\r\n"
,
"\n"
,
str_replace
(
'
\"
'
,
'
"
'
,
trim
(
$
var2
)));
$
url
= (
$
var1
) ?
$
var1
:
$
var2
;
if
(
$
var1
&& !
$
var2
)
{
$
var2
=
$
var1
;
}
if
(!
$
url
)
{
return
'
[url
'
. ((
$
var1
) ?
'
=
'
.
$
var1
:
''
) .
'
]
'
.
$
var2
.
'
[/url]
'
;
}
$
valid
=
false
;
$
url
=
str_replace
(
'
'
,
'
%20
'
,
$
url
);
// Checking urls
if
(
preg_match
(
'
#^
'
.
get_preg_expression
(
'
url
'
) .
'
$#i
'
,
$
url
) ||
preg_match
(
'
#^
'
.
get_preg_expression
(
'
www_url
'
) .
'
$#i
'
,
$
url
) ||
preg_match
(
'
#^
'
.
preg_quote
(
generate_board_url
(),
'
#
'
) .
get_preg_expression
(
'
relative_url
'
) .
'
$#i
'
,
$
url
))
{
$
valid
=
true
;
}
if
(
$
valid
)
{
$
this
->
parsed_items
[
'
url
'
]++;
// if there is no scheme, then add http schema
if
(!
preg_match
(
'
#^[a-z][a-z\d+\-.]*:/{2}#i
'
,
$
url
))
{
$
url
=
'
http://
'
.
$
url
;
}
// Is this a link to somewhere inside this board? If so then remove the session id from the url
if
(
strpos
(
$
url
,
generate_board_url
()) !==
false
&&
strpos
(
$
url
,
'
sid=
'
) !==
false
)
{
$
url
=
preg_replace
(
'
/(&|\?)sid=[0-9a-f]{32}&/
'
,
'
\1
'
,
$
url
);
$
url
=
preg_replace
(
'
/(&|\?)sid=[0-9a-f]{32}$/
'
,
''
,
$
url
);
$
url
=
append_sid
(
$
url
);
}
return
(
$
var1
) ?
'
[url=
'
.
$
this
->
bbcode_specialchars
(
$
url
) .
'
:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
var2
.
'
[/url:
'
.
$
this
->
bbcode_uid
.
'
]
'
:
'
[url:
'
.
$
this
->
bbcode_uid
.
'
]
'
.
$
this
->
bbcode_specialchars
(
$
url
) .
'
[/url:
'
.
$
this
->
bbcode_uid
.
'
]
'
;
}
return
'
[url
'
. ((
$
var1
) ?
'
=
'
.
$
var1
:
''
) .
'
]
'
.
$
var2
.
'
[/url]
'
;
}
/**
* Check if url is pointing to this domain/script_path/php-file
*
* @param string $url the url to check
* @return true if the url is pointing to this domain/script_path/php-file, false if not
*
* @access private
*/
function
path_in_domain
(
$
url
)
{
global
$
config
,
$
phpEx
,
$
user
;
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