Docs For Class IMP_MIME_Viewer

Description

The MIME_Viewer_html class renders out HTML text with an effort to remove potentially malicious code.

$Horde: imp/lib/MIME/Viewer/html.php,v 1.75.2.41 2010/06/30 21:55:47 slusarz Exp $

See the enclosed file COPYING for license information (GPL). If you did not receive this file, see http://www.fsf.org/copyleft/gpl.html.

author: Anil Madhavapeddy <anil@recoil.org>
author: Jon Parise <jon@horde.org>
author: Michael Slusarz <slusarz@horde.org>

Located in /lib/MIME/Viewer/html.php (line 21)

MIME_Viewer_html
   |
   --IMP_MIME_Viewer_html

Variable Summary

string $_img_regex

Method Summary

string render (array $params)

string _blockImages (array $matches)

void _mailtoCallback ( $m)

void _openLinksInNewWindow (string $data)

Variables

string $_img_regex = '/
# match 1
(
# <img> tags
<img[^>]+?src=
# <input> tags
|<input[^>]+?src=
# "background" attributes
|<body[^>]+?background=|<td[^>]*background=|<table[^>]*background=
# "style" attributes; match 2; quotes: match 3
|(style=\s*("|\')?[^>]*?background(?:-image)?:(?(3)[^"\']|[^>])*?url\s*$)
)
# whitespace
\s*
# opening quotes, parenthesis; match 4
("|\')?
# the image url; match 5
((?(2)
# matched a "style" attribute
(?(4)[^"\')>]*|[^\s)>]*)
# did not match a "style" attribute
|(?(4)[^"\'>]*|[^\s>]*)
))
# closing quotes
(?(4)\\4)
# matched a "style" attribute?
(?(2)
# closing parenthesis
\s*$
# remainder of the "style" attribute; match 6
((?(3)[^"\'>]*|[^\s>]*))
)
/isx' (line 29)

The regular expression to catch any tags and attributes that load external images.

Methods

render (line 71)

Render out the currently set contents.

return: The rendered text in HTML.

string render (array $params)

array $params: An array with a reference to a MIME_Contents object.

_blockImages (line 203)

Called from the image-blocking regexp to construct the new image tags.

return: The new image tag.

string _blockImages (array $matches)

array $matches

_mailtoCallback (line 188)

void _mailtoCallback ( $m)

$m

_openLinksInNewWindow (line 255)

Convert links to open in a new window.

void _openLinksInNewWindow (string $data)

string $data: Text to convert.