The LiveJournal “sysban” mechanism provides the means for generic
bans on site functionality given a block type and value. The type is what
is being checked (IP address, e-mail address, etc.), and
the value is the value which causes the block to activate
(10.0.0.10, for example).
The $/bin/ljsysban.plLJHOME
There are two statushistory types tied to the sysban tool:
sysban_addsysban_modThe data each type logs varies depending on the type of ban and the information available when it was triggered. If a userid is available, it will be logged and the notes column will contain a short description of what caused the trigger along with a number of variables that may be useful in investigation of the situation.
Below are the current ban types. More can be added as necessary.
General
ipBlocked from site if IP address matches.
e-mailBlocked if e-mail matches. Return a
fake “503 Service Unavailable”
message to a user who tries to create a new account with the given e-mail address.
uniqBlocked if value of unique cookie (from /admin/userlog.bml) matches.
contentflagBlocked if value (username) matches.
Ban management tool usage:
ljsysban.pl [ --list {(1) args} | add {(2) args} | modify {(3) args} ]
(1) --banid=id | --what=bantype | --status=value | --bandate=datetime | --banuntil=datetime | --value=value | --note=string
(2) { --what=bantype | --value=value } | --status=value | --bandate=datetime |
{ --banuntil=datetime | --banlength=duration }
| --note=string
(3) --banid=id | --status=value | --bandate=datetime |
{ --banuntil=datetime | --banlength=duration }
| --value=value | --note=string
| Datetime format is “YYYY-MM-DD HH:MM:SS”. |
| The note string can be changed to be blank. |
| Status can be “active” or “expired”. |
| Duration format is “N[dhms]” e.g. “5d” or “3h”. |
Example 26.1. Using ljsysban.pl
ljsysban.pl --list --what=ip --value=127.0.0.1 ljsysban.pl --add --what=email --value=test@example.com --banuntil='2007-12-12 00:05:00' --note='test' ljsysban.pl --add --what=uniq --value=jd57kdnes6jd6jdr --banlength=3d --note='3 day ban'