Move code generation code and sources to 'tool'

1 files changed, 758 insertions, 0 deletions

diff --git a/tool/rfc2812_replies.txt b/tool/rfc2812_replies.txt
new file mode 100644
index 0000000..4367fcc
--- /dev/null
+++ b/tool/rfc2812_replies.txt
@@ -0,0 +1,758 @@
+001    RPL_WELCOME
+      "Welcome to the Internet Relay Network
+       <nick>!<user>@<host>"
+002    RPL_YOURHOST
+      "Your host is <servername>, running version <ver>"
+003    RPL_CREATED
+      "This server was created <date>"
+004    RPL_MYINFO
+      "<servername> <version> <available user modes>
+       <available channel modes>"
+
+ - The server sends Replies 001 to 004 to a user upon
+   successful registration.
+
+005    RPL_BOUNCE
+      "Try server <server name>, port <port number>"
+
+ - Sent by the server to a user to suggest an alternative
+   server.  This is often used when the connection is
+   refused because the server is already full.
+
+302    RPL_USERHOST
+      ":*1<reply> *( " " <reply> )"
+
+ - Reply format used by USERHOST to list replies to
+   the query list.  The reply string is composed as
+   follows:
+
+   reply = nickname [ "*" ] "=" ( "+" / "-" ) hostname
+
+   The '*' indicates whether the client has registered
+   as an Operator.  The '-' or '+' characters represent
+   whether the client has set an AWAY message or not
+   respectively.
+
+303    RPL_ISON
+      ":*1<nick> *( " " <nick> )"
+
+ - Reply format used by ISON to list replies to the
+   query list.
+
+301    RPL_AWAY
+      "<nick> :<away message>"
+305    RPL_UNAWAY
+      ":You are no longer marked as being away"
+306    RPL_NOWAWAY
+      ":You have been marked as being away"
+
+ - These replies are used with the AWAY command (if
+   allowed).  RPL_AWAY is sent to any client sending a
+   PRIVMSG to a client which is away.  RPL_AWAY is only
+   sent by the server to which the client is connected.
+   Replies RPL_UNAWAY and RPL_NOWAWAY are sent when the
+   client removes and sets an AWAY message.
+
+311    RPL_WHOISUSER
+      "<nick> <user> <host> * :<real name>"
+312    RPL_WHOISSERVER
+      "<nick> <server> :<server info>"
+313    RPL_WHOISOPERATOR
+      "<nick> :is an IRC operator"
+317    RPL_WHOISIDLE
+      "<nick> <integer> :seconds idle"
+318    RPL_ENDOFWHOIS
+      "<nick> :End of WHOIS list"
+319    RPL_WHOISCHANNELS
+      "<nick> :*( ( "@" / "+" ) <channel> " " )"
+
+ - Replies 311 - 313, 317 - 319 are all replies
+   generated in response to a WHOIS message.  Given that
+   there are enough parameters present, the answering
+   server MUST either formulate a reply out of the above
+   numerics (if the query nick is found) or return an
+   error reply.  The '*' in RPL_WHOISUSER is there as
+   the literal character and not as a wild card.  For
+   each reply set, only RPL_WHOISCHANNELS may appear
+   more than once (for long lists of channel names).
+   The '@' and '+' characters next to the channel name
+   indicate whether a client is a channel operator or
+   has been granted permission to speak on a moderated
+   channel.  The RPL_ENDOFWHOIS reply is used to mark
+   the end of processing a WHOIS message.
+
+314    RPL_WHOWASUSER
+      "<nick> <user> <host> * :<real name>"
+369    RPL_ENDOFWHOWAS
+      "<nick> :End of WHOWAS"
+
+ - When replying to a WHOWAS message, a server MUST use
+   the replies RPL_WHOWASUSER, RPL_WHOISSERVER or
+   ERR_WASNOSUCHNICK for each nickname in the presented
+   list.  At the end of all reply batches, there MUST
+   be RPL_ENDOFWHOWAS (even if there was only one reply
+   and it was an error).
+
+321    RPL_LISTSTART
+      Obsolete. Not used.
+
+322    RPL_LIST
+      "<channel> <# visible> :<topic>"
+323    RPL_LISTEND
+      ":End of LIST"
+
+ - Replies RPL_LIST, RPL_LISTEND mark the actual replies
+   with data and end of the server's response to a LIST
+   command.  If there are no channels available to return,
+   only the end reply MUST be sent.
+
+325    RPL_UNIQOPIS
+      "<channel> <nickname>"
+
+324    RPL_CHANNELMODEIS
+      "<channel> <mode> <mode params>"
+
+331    RPL_NOTOPIC
+      "<channel> :No topic is set"
+332    RPL_TOPIC
+      "<channel> :<topic>"
+
+ - When sending a TOPIC message to determine the
+   channel topic, one of two replies is sent.  If
+   the topic is set, RPL_TOPIC is sent back else
+   RPL_NOTOPIC.
+
+341    RPL_INVITING
+      "<channel> <nick>"
+
+ - Returned by the server to indicate that the
+   attempted INVITE message was successful and is
+   being passed onto the end client.
+
+342    RPL_SUMMONING
+      "<user> :Summoning user to IRC"
+
+ - Returned by a server answering a SUMMON message to
+   indicate that it is summoning that user.
+
+346    RPL_INVITELIST
+      "<channel> <invitemask>"
+347    RPL_ENDOFINVITELIST
+      "<channel> :End of channel invite list"
+
+ - When listing the 'invitations masks' for a given channel,
+   a server is required to send the list back using the
+   RPL_INVITELIST and RPL_ENDOFINVITELIST messages.  A
+   separate RPL_INVITELIST is sent for each active mask.
+   After the masks have been listed (or if none present) a
+   RPL_ENDOFINVITELIST MUST be sent.
+
+348    RPL_EXCEPTLIST
+      "<channel> <exceptionmask>"
+349    RPL_ENDOFEXCEPTLIST
+      "<channel> :End of channel exception list"
+
+ - When listing the 'exception masks' for a given channel,
+   a server is required to send the list back using the
+   RPL_EXCEPTLIST and RPL_ENDOFEXCEPTLIST messages.  A
+   separate RPL_EXCEPTLIST is sent for each active mask.
+   After the masks have been listed (or if none present)
+   a RPL_ENDOFEXCEPTLIST MUST be sent.
+
+351    RPL_VERSION
+      "<version>.<debuglevel> <server> :<comments>"
+
+ - Reply by the server showing its version details.
+   The <version> is the version of the software being
+   used (including any patchlevel revisions) and the
+   <debuglevel> is used to indicate if the server is
+   running in "debug mode".
+
+   The "comments" field may contain any comments about
+   the version or further version details.
+
+352    RPL_WHOREPLY
+      "<channel> <user> <host> <server> <nick>
+      ( "H" / "G" > ["*"] [ ( "@" / "+" ) ]
+      :<hopcount> <real name>"
+
+315    RPL_ENDOFWHO
+      "<name> :End of WHO list"
+
+ - The RPL_WHOREPLY and RPL_ENDOFWHO pair are used
+   to answer a WHO message.  The RPL_WHOREPLY is only
+   sent if there is an appropriate match to the WHO
+   query.  If there is a list of parameters supplied
+   with a WHO message, a RPL_ENDOFWHO MUST be sent
+   after processing each list item with <name> being
+   the item.
+
+353    RPL_NAMREPLY
+      "( "=" / "*" / "@" ) <channel>
+       :[ "@" / "+" ] <nick> *( " " [ "@" / "+" ] <nick> )
+ - "@" is used for secret channels, "*" for private
+   channels, and "=" for others (public channels).
+
+366    RPL_ENDOFNAMES
+      "<channel> :End of NAMES list"
+
+ - To reply to a NAMES message, a reply pair consisting
+   of RPL_NAMREPLY and RPL_ENDOFNAMES is sent by the
+   server back to the client.  If there is no channel
+   found as in the query, then only RPL_ENDOFNAMES is
+   returned.  The exception to this is when a NAMES
+   message is sent with no parameters and all visible
+   channels and contents are sent back in a series of
+   RPL_NAMEREPLY messages with a RPL_ENDOFNAMES to mark
+   the end.
+
+364    RPL_LINKS
+      "<mask> <server> :<hopcount> <server info>"
+365    RPL_ENDOFLINKS
+      "<mask> :End of LINKS list"
+
+ - In replying to the LINKS message, a server MUST send
+   replies back using the RPL_LINKS numeric and mark the
+   end of the list using an RPL_ENDOFLINKS reply.
+
+367    RPL_BANLIST
+      "<channel> <banmask>"
+368    RPL_ENDOFBANLIST
+      "<channel> :End of channel ban list"
+
+ - When listing the active 'bans' for a given channel,
+   a server is required to send the list back using the
+   RPL_BANLIST and RPL_ENDOFBANLIST messages.  A separate
+   RPL_BANLIST is sent for each active banmask.  After the
+   banmasks have been listed (or if none present) a
+   RPL_ENDOFBANLIST MUST be sent.
+
+371    RPL_INFO
+      ":<string>"
+374    RPL_ENDOFINFO
+      ":End of INFO list"
+
+ - A server responding to an INFO message is required to
+   send all its 'info' in a series of RPL_INFO messages
+   with a RPL_ENDOFINFO reply to indicate the end of the
+   replies.
+
+375    RPL_MOTDSTART
+      ":- <server> Message of the day - "
+372    RPL_MOTD
+      ":- <text>"
+376    RPL_ENDOFMOTD
+      ":End of MOTD command"
+
+ - When responding to the MOTD message and the MOTD file
+   is found, the file is displayed line by line, with
+   each line no longer than 80 characters, using
+   RPL_MOTD format replies.  These MUST be surrounded
+   by a RPL_MOTDSTART (before the RPL_MOTDs) and an
+   RPL_ENDOFMOTD (after).
+
+381    RPL_YOUREOPER
+      ":You are now an IRC operator"
+
+ - RPL_YOUREOPER is sent back to a client which has
+   just successfully issued an OPER message and gained
+   operator status.
+
+382    RPL_REHASHING
+      "<config file> :Rehashing"
+
+ - If the REHASH option is used and an operator sends
+   a REHASH message, an RPL_REHASHING is sent back to
+   the operator.
+
+383    RPL_YOURESERVICE
+      "You are service <servicename>"
+
+ - Sent by the server to a service upon successful
+   registration.
+
+391    RPL_TIME
+      "<server> :<string showing server's local time>"
+
+ - When replying to the TIME message, a server MUST send
+   the reply using the RPL_TIME format above.  The string
+   showing the time need only contain the correct day and
+   time there.  There is no further requirement for the
+   time string.
+
+392    RPL_USERSSTART
+      ":UserID   Terminal  Host"
+393    RPL_USERS
+      ":<username> <ttyline> <hostname>"
+394    RPL_ENDOFUSERS
+      ":End of users"
+395    RPL_NOUSERS
+      ":Nobody logged in"
+
+ - If the USERS message is handled by a server, the
+   replies RPL_USERSTART, RPL_USERS, RPL_ENDOFUSERS and
+   RPL_NOUSERS are used.  RPL_USERSSTART MUST be sent
+   first, following by either a sequence of RPL_USERS
+   or a single RPL_NOUSER.  Following this is
+   RPL_ENDOFUSERS.
+
+200    RPL_TRACELINK
+      "Link <version & debug level> <destination>
+       <next server> V<protocol version>
+       <link uptime in seconds> <backstream sendq>
+       <upstream sendq>"
+201    RPL_TRACECONNECTING
+      "Try. <class> <server>"
+202    RPL_TRACEHANDSHAKE
+      "H.S. <class> <server>"
+203    RPL_TRACEUNKNOWN
+      "???? <class> [<client IP address in dot form>]"
+204    RPL_TRACEOPERATOR
+      "Oper <class> <nick>"
+205    RPL_TRACEUSER
+      "User <class> <nick>"
+206    RPL_TRACESERVER
+      "Serv <class> <int>S <int>C <server>
+       <nick!user|*!*>@<host|server> V<protocol version>"
+207    RPL_TRACESERVICE
+      "Service <class> <name> <type> <active type>"
+208    RPL_TRACENEWTYPE
+      "<newtype> 0 <client name>"
+209    RPL_TRACECLASS
+      "Class <class> <count>"
+210    RPL_TRACERECONNECT
+      Unused.
+261    RPL_TRACELOG
+      "File <logfile> <debug level>"
+262    RPL_TRACEEND
+      "<server name> <version & debug level> :End of TRACE"
+
+ - The RPL_TRACE* are all returned by the server in
+   response to the TRACE message.  How many are
+   returned is dependent on the TRACE message and
+   whether it was sent by an operator or not.  There
+   is no predefined order for which occurs first.
+   Replies RPL_TRACEUNKNOWN, RPL_TRACECONNECTING and
+   RPL_TRACEHANDSHAKE are all used for connections
+   which have not been fully established and are either
+   unknown, still attempting to connect or in the
+   process of completing the 'server handshake'.
+   RPL_TRACELINK is sent by any server which handles
+   a TRACE message and has to pass it on to another
+   server.  The list of RPL_TRACELINKs sent in
+   response to a TRACE command traversing the IRC
+   network should reflect the actual connectivity of
+   the servers themselves along that path.
+
+   RPL_TRACENEWTYPE is to be used for any connection
+   which does not fit in the other categories but is
+   being displayed anyway.
+   RPL_TRACEEND is sent to indicate the end of the list.
+
+211    RPL_STATSLINKINFO
+      "<linkname> <sendq> <sent messages>
+       <sent Kbytes> <received messages>
+       <received Kbytes> <time open>"
+
+ - reports statistics on a connection.  <linkname>
+   identifies the particular connection, <sendq> is
+   the amount of data that is queued and waiting to be
+   sent <sent messages> the number of messages sent,
+   and <sent Kbytes> the amount of data sent, in
+   Kbytes. <received messages> and <received Kbytes>
+   are the equivalent of <sent messages> and <sent
+   Kbytes> for received data, respectively.  <time
+   open> indicates how long ago the connection was
+   opened, in seconds.
+
+212    RPL_STATSCOMMANDS
+      "<command> <count> <byte count> <remote count>"
+
+ - reports statistics on commands usage.
+
+219    RPL_ENDOFSTATS
+      "<stats letter> :End of STATS report"
+
+242    RPL_STATSUPTIME
+      ":Server Up %d days %d:%02d:%02d"
+
+ - reports the server uptime.
+
+243    RPL_STATSOLINE
+      "O <hostmask> * <name>"
+
+ - reports the allowed hosts from where user may become IRC
+   operators.
+
+221    RPL_UMODEIS
+      "<user mode string>"
+
+ - To answer a query about a client's own mode,
+   RPL_UMODEIS is sent back.
+
+234    RPL_SERVLIST
+      "<name> <server> <mask> <type> <hopcount> <info>"
+
+235    RPL_SERVLISTEND
+      "<mask> <type> :End of service listing"
+
+ - When listing services in reply to a SERVLIST message,
+   a server is required to send the list back using the
+   RPL_SERVLIST and RPL_SERVLISTEND messages.  A separate
+   RPL_SERVLIST is sent for each service.  After the
+   services have been listed (or if none present) a
+   RPL_SERVLISTEND MUST be sent.
+
+251    RPL_LUSERCLIENT
+      ":There are <integer> users and <integer>
+       services on <integer> servers"
+252    RPL_LUSEROP
+      "<integer> :operator(s) online"
+253    RPL_LUSERUNKNOWN
+      "<integer> :unknown connection(s)"
+254    RPL_LUSERCHANNELS
+      "<integer> :channels formed"
+255    RPL_LUSERME
+      ":I have <integer> clients and <integer>
+        servers"
+
+ - In processing an LUSERS message, the server
+   sends a set of replies from RPL_LUSERCLIENT,
+   RPL_LUSEROP, RPL_USERUNKNOWN,
+   RPL_LUSERCHANNELS and RPL_LUSERME.  When
+   replying, a server MUST send back
+   RPL_LUSERCLIENT and RPL_LUSERME.  The other
+   replies are only sent back if a non-zero count
+   is found for them.
+
+256    RPL_ADMINME
+      "<server> :Administrative info"
+257    RPL_ADMINLOC1
+      ":<admin info>"
+258    RPL_ADMINLOC2
+      ":<admin info>"
+259    RPL_ADMINEMAIL
+      ":<admin info>"
+
+ - When replying to an ADMIN message, a server
+   is expected to use replies RPL_ADMINME
+   through to RPL_ADMINEMAIL and provide a text
+   message with each.  For RPL_ADMINLOC1 a
+   description of what city, state and country
+   the server is in is expected, followed by
+   details of the institution (RPL_ADMINLOC2)
+
+   and finally the administrative contact for the
+   server (an email address here is REQUIRED)
+   in RPL_ADMINEMAIL.
+
+263    RPL_TRYAGAIN
+      "<command> :Please wait a while and try again."
+
+ - When a server drops a command without processing it,
+   it MUST use the reply RPL_TRYAGAIN to inform the
+   originating client.
+
+401    ERR_NOSUCHNICK
+      "<nickname> :No such nick/channel"
+
+  - Used to indicate the nickname parameter supplied to a
+    command is currently unused.
+
+402    ERR_NOSUCHSERVER
+      "<server name> :No such server"
+
+ - Used to indicate the server name given currently
+   does not exist.
+
+403    ERR_NOSUCHCHANNEL
+      "<channel name> :No such channel"
+
+ - Used to indicate the given channel name is invalid.
+
+404    ERR_CANNOTSENDTOCHAN
+      "<channel name> :Cannot send to channel"
+
+ - Sent to a user who is either (a) not on a channel
+   which is mode +n or (b) not a chanop (or mode +v) on
+   a channel which has mode +m set or where the user is
+   banned and is trying to send a PRIVMSG message to
+   that channel.
+
+405    ERR_TOOMANYCHANNELS
+      "<channel name> :You have joined too many channels"
+
+ - Sent to a user when they have joined the maximum
+   number of allowed channels and they try to join
+   another channel.
+
+406    ERR_WASNOSUCHNICK
+      "<nickname> :There was no such nickname"
+
+ - Returned by WHOWAS to indicate there is no history
+   information for that nickname.
+
+407    ERR_TOOMANYTARGETS
+      "<target> :<error code> recipients. <abort message>"
+
+ - Returned to a client which is attempting to send a
+   PRIVMSG/NOTICE using the user@host destination format
+   and for a user@host which has several occurrences.
+
+ - Returned to a client which trying to send a
+   PRIVMSG/NOTICE to too many recipients.
+
+ - Returned to a client which is attempting to JOIN a safe
+   channel using the shortname when there are more than one
+   such channel.
+
+408    ERR_NOSUCHSERVICE
+      "<service name> :No such service"
+
+ - Returned to a client which is attempting to send a SQUERY
+   to a service which does not exist.
+
+409    ERR_NOORIGIN
+      ":No origin specified"
+
+ - PING or PONG message missing the originator parameter.
+
+411    ERR_NORECIPIENT
+      ":No recipient given (<command>)"
+412    ERR_NOTEXTTOSEND
+      ":No text to send"
+413    ERR_NOTOPLEVEL
+      "<mask> :No toplevel domain specified"
+414    ERR_WILDTOPLEVEL
+      "<mask> :Wildcard in toplevel domain"
+415    ERR_BADMASK
+      "<mask> :Bad Server/host mask"
+
+ - 412 - 415 are returned by PRIVMSG to indicate that
+   the message wasn't delivered for some reason.
+   ERR_NOTOPLEVEL and ERR_WILDTOPLEVEL are errors that
+   are returned when an invalid use of
+   "PRIVMSG $<server>" or "PRIVMSG #<host>" is attempted.
+
+421    ERR_UNKNOWNCOMMAND
+      "<command> :Unknown command"
+
+ - Returned to a registered client to indicate that the
+   command sent is unknown by the server.
+
+422    ERR_NOMOTD
+      ":MOTD File is missing"
+
+ - Server's MOTD file could not be opened by the server.
+
+423    ERR_NOADMININFO
+      "<server> :No administrative info available"
+
+ - Returned by a server in response to an ADMIN message
+   when there is an error in finding the appropriate
+   information.
+
+424    ERR_FILEERROR
+      ":File error doing <file op> on <file>"
+
+ - Generic error message used to report a failed file
+   operation during the processing of a message.
+
+431    ERR_NONICKNAMEGIVEN
+      ":No nickname given"
+
+ - Returned when a nickname parameter expected for a
+   command and isn't found.
+
+432    ERR_ERRONEUSNICKNAME
+      "<nick> :Erroneous nickname"
+
+ - Returned after receiving a NICK message which contains
+   characters which do not fall in the defined set.  See
+   section 2.3.1 for details on valid nicknames.
+
+433    ERR_NICKNAMEINUSE
+      "<nick> :Nickname is already in use"
+
+ - Returned when a NICK message is processed that results
+   in an attempt to change to a currently existing
+   nickname.
+
+436    ERR_NICKCOLLISION
+      "<nick> :Nickname collision KILL from <user>@<host>"
+
+ - Returned by a server to a client when it detects a
+   nickname collision (registered of a NICK that
+   already exists by another server).
+
+437    ERR_UNAVAILRESOURCE
+      "<nick/channel> :Nick/channel is temporarily unavailable"
+
+ - Returned by a server to a user trying to join a channel
+   currently blocked by the channel delay mechanism.
+
+ - Returned by a server to a user trying to change nickname
+   when the desired nickname is blocked by the nick delay
+   mechanism.
+
+441    ERR_USERNOTINCHANNEL
+      "<nick> <channel> :They aren't on that channel"
+
+ - Returned by the server to indicate that the target
+   user of the command is not on the given channel.
+
+442    ERR_NOTONCHANNEL
+      "<channel> :You're not on that channel"
+
+ - Returned by the server whenever a client tries to
+   perform a channel affecting command for which the
+   client isn't a member.
+
+443    ERR_USERONCHANNEL
+      "<user> <channel> :is already on channel"
+
+ - Returned when a client tries to invite a user to a
+   channel they are already on.
+
+444    ERR_NOLOGIN
+      "<user> :User not logged in"
+
+ - Returned by the summon after a SUMMON command for a
+   user was unable to be performed since they were not
+   logged in.
+
+445    ERR_SUMMONDISABLED
+      ":SUMMON has been disabled"
+
+ - Returned as a response to the SUMMON command.  MUST be
+   returned by any server which doesn't implement it.
+
+446    ERR_USERSDISABLED
+      ":USERS has been disabled"
+
+ - Returned as a response to the USERS command.  MUST be
+   returned by any server which does not implement it.
+
+451    ERR_NOTREGISTERED
+      ":You have not registered"
+
+ - Returned by the server to indicate that the client
+   MUST be registered before the server will allow it
+   to be parsed in detail.
+
+461    ERR_NEEDMOREPARAMS
+      "<command> :Not enough parameters"
+
+ - Returned by the server by numerous commands to
+   indicate to the client that it didn't supply enough
+   parameters.
+
+462    ERR_ALREADYREGISTRED
+      ":Unauthorized command (already registered)"
+
+ - Returned by the server to any link which tries to
+   change part of the registered details (such as
+   password or user details from second USER message).
+
+463    ERR_NOPERMFORHOST
+      ":Your host isn't among the privileged"
+
+ - Returned to a client which attempts to register with
+   a server which does not been setup to allow
+   connections from the host the attempted connection
+   is tried.
+
+464    ERR_PASSWDMISMATCH
+      ":Password incorrect"
+
+ - Returned to indicate a failed attempt at registering
+   a connection for which a password was required and
+   was either not given or incorrect.
+
+465    ERR_YOUREBANNEDCREEP
+      ":You are banned from this server"
+
+ - Returned after an attempt to connect and register
+   yourself with a server which has been setup to
+   explicitly deny connections to you.
+
+466    ERR_YOUWILLBEBANNED
+
+ - Sent by a server to a user to inform that access to the
+   server will soon be denied.
+
+467    ERR_KEYSET
+      "<channel> :Channel key already set"
+471    ERR_CHANNELISFULL
+      "<channel> :Cannot join channel (+l)"
+472    ERR_UNKNOWNMODE
+      "<char> :is unknown mode char to me for <channel>"
+473    ERR_INVITEONLYCHAN
+      "<channel> :Cannot join channel (+i)"
+474    ERR_BANNEDFROMCHAN
+      "<channel> :Cannot join channel (+b)"
+475    ERR_BADCHANNELKEY
+      "<channel> :Cannot join channel (+k)"
+476    ERR_BADCHANMASK
+      "<channel> :Bad Channel Mask"
+477    ERR_NOCHANMODES
+      "<channel> :Channel doesn't support modes"
+478    ERR_BANLISTFULL
+      "<channel> <char> :Channel list is full"
+
+481    ERR_NOPRIVILEGES
+      ":Permission Denied- You're not an IRC operator"
+
+ - Any command requiring operator privileges to operate
+   MUST return this error to indicate the attempt was
+   unsuccessful.
+
+482    ERR_CHANOPRIVSNEEDED
+      "<channel> :You're not channel operator"
+
+ - Any command requiring 'chanop' privileges (such as
+   MODE messages) MUST return this error if the client
+   making the attempt is not a chanop on the specified
+   channel.
+
+483    ERR_CANTKILLSERVER
+      ":You can't kill a server!"
+
+ - Any attempts to use the KILL command on a server
+   are to be refused and this error returned directly
+   to the client.
+
+484    ERR_RESTRICTED
+      ":Your connection is restricted!"
+
+ - Sent by the server to a user upon connection to indicate
+   the restricted nature of the connection (user mode "+r").
+
+485    ERR_UNIQOPPRIVSNEEDED
+      ":You're not the original channel operator"
+
+ - Any MODE requiring "channel creator" privileges MUST
+   return this error if the client making the attempt is not
+   a chanop on the specified channel.
+
+491    ERR_NOOPERHOST
+      ":No O-lines for your host"
+
+ - If a client sends an OPER message and the server has
+   not been configured to allow connections from the
+   client's host as an operator, this error MUST be
+   returned.
+
+501    ERR_UMODEUNKNOWNFLAG
+      ":Unknown MODE flag"
+
+ - Returned by the server to indicate that a MODE
+   message was sent with a nickname parameter and that
+   the a mode flag sent was not recognized.
+
+502    ERR_USERSDONTMATCH
+      ":Cannot change mode for other users"
+
+ - Error sent to any user trying to view or change the
+   user mode for a user other than themselves.
+