mIRC: White-listing links to an uncommon domain - hyperlink

Question

So I am trying to build my twitch bot through mIRC and I have been wanting it to timeout links for everysite except for any links from http://osu.ppy.sh/ and any links from http://puu.sh/ but block out anything else.
I have found script and tutorials but I cannot find anything that explains how to make an exception in enough detail to explain what each part of the exception is for nor can I find anything that includes these domains in the exception
Here is my old link protection script
on #*:text:*:#:linkpost $1-
on #*:action:*:#:linkpost $1-
on #*:notice:*:#:linkpost $1-
alias -l linkpost {
if ((!%p) && (!$hfind(permit,$nick))) { inc -u4 %p
var %purge /^!(link\so(n|ff)|(permit))\b/iS
var %domain com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk
var %link /(?<=^|\s)((?>\S{3,8}:\/\/|w{3}\56)\S+)|\56( $+ %domain $+ )\b/iS
if ($findtok(%chanon1,#,1,32)) && ($nick(#,$nick,vr)) && ($regex($1-,%link)) {
timeout # $nick | /mode # -b $nick
msg # $nick You did not have permission to post a link ask a mod to !permit you
msg # /timeout $nick 1
}
elseif (($regex($1-,%purge)) && ($regml(1) = permit) && ($nick isop #) && ($$2 ison #)) {
hadd -mz permit $v1 30 | notice $v1 You have 30 seconds to post a link. Starting now!
msg # You now have 30 seconds to post a link!
}
elseif (($regml(1) = link on) && ($nick isop #)) {
goto $iif(!$istok(%chanon1,#,32),a,b) | :a | set %chanon1 $addtok(%chanon,#,32)
.msg # My Link Protection Is Now on in: $+($chr(2),#)
halt | :b | .msg # $nick $+ , my link protection is already on in $&
$+($chr(2),#,$chr(2)) !
}
elseif (($regml(1) = link off) && ($nick isop #)) {
goto $iif($istok(%chanon1,#,32),c,d) | :c | set %chanon1 $remtok(%chanon,#,1,32)
.msg # My Link Protection Is Now off in: $+($chr(2),#)
halt | :d | .msg # $nick $+ , My link protection is already off . $&
!
}
}
}
Any will be appreciated, there is no other commands or script currently for the bot.
Code after edit
on #*:text:*:#:linkpost $1-
on #*:action:*:#:linkpost $1-
on #*:notice:*:#:linkpost $1-
alias -l linkpost {
if ((!%p) && (!$hfind(permit,$nick))) { inc -u4 %p
var %purge /^!(link\so(n|ff)|(permit))\b/iS
var %domain com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk
var %link /(?<=^|\s)((?>\S{3,8}:\/\/|w{3}\56)\S+)|\56( $+ %domain $+ )\b/iS
var %whitelistPattern = /.*http:\/\/(osu.ppy.sh|puu.sh)\/.*/i
if (!$regex($1-, %whitelistPattern)) {
return
}
if ($findtok(%chanon1,#,1,32)) && ($nick(#,$nick,vr)) && ($regex($1-,%link)) {
timeout # $nick | /mode # -b $nick
msg # $nick You did not have permission to post a link ask a mod to !permit you
msg # /timeout $nick 1
}
elseif (($regex($1-,%purge)) && ($regml(1) = permit) && ($nick isop #) && ($$2 ison #)) {
hadd -mz permit $v1 30 | notice $v1 You have 30 seconds to post a link. Starting now!
msg # You now have 30 seconds to post a link!
}
elseif (($regml(1) = link on) && ($nick isop #)) {
goto $iif(!$istok(%chanon1,#,32),a,b) | :a | set %chanon1 $addtok(%chanon,#,32)
.msg # My Link Protection Is Now on in: $+($chr(2),#)
halt | :b | .msg # $nick $+ , my link protection is already on in $&
$+($chr(2),#,$chr(2)) !
}
elseif (($regml(1) = link off) && ($nick isop #)) {
goto $iif($istok(%chanon1,#,32),c,d) | :c | set %chanon1 $remtok(%chanon,#,1,32)
.msg # My Link Protection Is Now off in: $+($chr(2),#)
halt | :d | .msg # $nick $+ , My link protection is already off . $&
!
}
}
}

Answer 1

A naive solution will be to add condition that will check the host and to stop the script from happening if it's not in the white list.
Change to this:
alias -l linkpost {
var %whitelistPattern = /.*http:\/\/(osu.ppy.sh|puu.sh)\/.*/i
if (!$regex($1-, %whitelistPattern)) {
return
}
; Rest of the current script
Fix: Forgot adding % before variable name.