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Opened 16 months ago

Last modified 3 months ago

#22946 new defect (bug)

Default filter erroneously turns FTP hostnames into HTTP links — at Version 2

Reported by: DavidAnderson Owned by:
Milestone: Awaiting Review Priority: normal
Severity: normal Version: 2.0.4
Component: Formatting Keywords: close has-patch
Focuses: Cc:

Description (last modified by SergeyBiryukov)

The function _make_web_ftp_clickable_cb in wp-includes/formatting.php is invoked upon any hostname matching "www." or "ftp." at the beginning. It pre-pends 'http://' and makes the link clickable (i.e. wraps it in <a href="">).

As a default that makes sense for things beginning www. - but not for everything beginning ftp.

In my case, I was using the plugin WP Better Emails, and sent out an email with this line (approx):

Here is the FTP server: ftp.example.com

WP, by default, "helpfully" totally mangles this into:
Here is the FTP server: <a href="http://ftp.example.com">http://ftp.example.com</a>

The recipient of my email now believes that I was sending him an HTTP link, and is confused that it does not work. But in fact I never sent such a link - that was WordPress mangling what I did send.

Sure, some FTP servers will also have HTTP listening. But by default WordPress assumes that they all do, which is crazy.

Proposed solution: on line 1471 of wp-includes/formatting.php (as found in 3.4.2), change:

$ret = preg_replace_callback( '#([\s>])((www|ftp)\.[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]+)#is', '_make_web_ftp_clickable_cb', $ret );

by removing the "ftp" case, hence:

$ret = preg_replace_callback( '#([\s>])((www)\.[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]+)#is', '_make_web_ftp_clickable_cb', $ret );

The function _make_web_ftp_clickable_cb should then be renamed by removing ftp_, since the case of turning FTP hostnames into clickable HTTP links would have been removed.

Change History (2)

comment:1 mdgl16 months ago

I don't know but isn't the idea to turn sites whose name starts with the string "ftp." into clickable links using the ftp protocol (e.g. ftp://ftp.example.com)? Most browsers seem to handle this kind of thing just fine.

comment:2 SergeyBiryukov16 months ago

  • Component changed from General to Formatting
  • Description modified (diff)
  • Version changed from trunk to 2.0.4

Related: [4011]

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