Hey folks, long story short, i need to limit username to certain characters.
A-Z a-z [] _
That's about it, so no special funky names.
As far as i understand, place where i need to edit it is in Subs-Members.php
Not sure if its only one place or i need to edit frontend javascript validation and/or something else.
Here is what looks like code responsible for checking characters in username:
// Only these characters are permitted.
if (preg_match('~[<>&"\'=\\\\]~', preg_replace('~&#(?:\\d{1,7}|x[0-9a-fA-F]{1,6});~', '', $regOptions['username'])) != 0 || $regOptions['username'] == '_' || $regOptions['username'] == '|' || strpos($regOptions['username'], '[code') !== false || strpos($regOptions['username'], '[/code') !== false)
$reg_errors[] = array('lang', 'error_invalid_characters_username');Since im stranger to regex and its patterns, not to mention i have no idea why username is being checked if its single character _ or | i wont even try to edit it. Pretty sure i would scramble something that would work, users would register and i would find out there is critical bug after month and god knows how many registered accounts...
I don't think I've ever heard of this happening before...
In your case, I'm going to make the rare suggestion that you edit directly in the database.
in smf_boards table
find the affected boards.
set the field id_parent to 0
this should bring the boards back and let you properly assign child/parent.
I'm gonna go out on a limb here and guess Kindred was meaning to reply to some other post?
(Perhaps Error Message: does not have a valid parent (https://www.simplemachines.org/community/index.php?topic=579419.0) )
Sad to say I'm no good with regex either, so I can't help much there.
Yeah im gonna assume the same. To clarify just in case. I need to limit allowed usernames on register/login to given characters in first post. So only that characters are allowed in username and thats it.
DOH!
I had to add some code to remove Unicode combining characters if used excessively, since people could put them in their names/posts and have it overflow onto other posts/parts of the page. You could get pretty creative with it so they would expand quite a bit everywhere. Example:
test
C̱̙̳̲͇͉̄̄̚l̝̩̩̝̺̠͞ā̝͉̩̟͆u̻͈̘̞̪̅̿d̝̄̅͆̚i͇̙͈̎̚o̘̟̎̄̄̎
test
If you only edit Subs-Members.php, I think you're probably only going to capture new registrations. You'll want to add edit Profile-Modify.php::saveProfileFields() to strip extraneous characters before member data is updated. I've never been the greatest at regex, so I stuck with simple functions like:
function hasProhibitedNonAlphaNumeric($strName)
{
for ( $i = 0; $i < strlen($strName); ++$i )
{
$v = ord($strName[$i]);
if ( $v >= 48 && $v <= 57 )
continue;
else if ( $v == 32 || $v == 95 || $v == 91 || $v == 93 ) // space, _, [, ]
continue;
else if ( ($v >= 65 && $v <= 90) || ($v >= 97 && $v <= 122) ) // >= A && <= Z || >= a && <= z
continue;
return true;
}
return false;
}
I put it together quickly in notepad before work, so can't guarantee there aren't basic errors. Used this for ASCII values: https://www.asciitable.com/