## SNOMASK - Server Notice Masks

Written by Ghostwolf 18th June 1997
Modified with permission by loki 12th November 1997

> This document (hopefully) gives a brief explanation of the use of server notice masks new to ircu2.10.00. This mask allows clients to specify which types of server notices they will receive when usermode +s. The mask may optionally be omitted, and reasonable defaults will be used by the server.

> Note: the descriptions here will be best understood by those with knowledge of C syntax. We do not attempt to explain either this or hexadecimal values in this document, and familiarity with these is assumed of the reader.

> Usage: `/mode <nick> +s [+/-][mask]`

> Mask |  | Hex value | Description
> --- | --- | --- | ---
> 1 | SNO_OLDSNO | 0x1 | /* unsorted old messages */
> 2 | SNO_SERVKILL | 0x2 | /* server kills (nick collisions) */
> 4 | SNO_OPERKILL | 0x4 | /* oper kills */
> 8 | SNO_HACK2 | 0x8 | /* desyncs */
> 16 | SNO_HACK3 | 0x10 | /* temporary desyncs */
> 32 | SNO_UNAUTH | 0x20 | /* unauthorized connections */
> 64 | SNO_TCPCOMMON | 0x40 | /* common TCP or socket errors */
> 128 | SNO_TOOMANY | 0x80 | /* too many connections */
> 256 | SNO_HACK4 | 0x100 | /* Uworld actions on channels */
> 512 | SNO_GLINE | 0x200 | /* glines */
> 1024 | SNO_NETWORK | 0x400 | /* net join/break, etc */
> 2048 | SNO_IPMISMATCH | 0x800 | /* IP mismatches */
> 4096 | SNO_THROTTLE | 0x1000 | /* host throttle add/remove notices */
> 8192 | SNO_OLDREALOP | 0x2000 | /* old oper-only messages */
> 16384 | SNO_CONNEXIT | 0x4000 | /* client connect/exit (ugh) */
> 32768 | SNO_AUTH | 0x8000 | /* auto glines/shuns */
> 65536 | SNO_DEBUG | 0x10000 | /* debugging messages (DEBUGMODE only) */
> 131072 | SNO_NICKCHG | 0x20000 | /* client nick changes (ugh) */

> standard +s | SNO_DEFAULT (SNO_NETWORK | SNO_OPERKILL | SNO_GLINE)
> standard +s when +o/O | SNO_DEFAULT | SNO_HACK2 | SNO_HACK4 | SNO_OLDSNO)
> only opers may set | SNO_OPER (SNO_CONNEXIT | SNO_OLDREALOP)

> ### Examples of Usage

> To receive only operkills, use /mode <nick> +s 4
> To receive operkills and glines, add the values:

> > `/mode <nick> +s 516`

> > (512+4=516)

> If you are already receiving some notices and you wish to add notices of netjoins/breaks use:

> > `/mode Ghostwolf +s +1024`

> If you wish to stop receiving netjoin/break notices, but continue to receive other notices, use:

> > `/mode Ghostwolf +s -1024
> > OR
> > /mode Ghostwolf -s +1024`

> A user typing /mode Ghostwolf +s will receive netsplits/joins, operkills, and g-lines.

> Opers who are +s will additionally receive HACK notices and anything that was originally in sendto_ops() and wasn't changed. Only opers can choose to receive connect/exit notices and anything that originally was in sendtoreal_ops() and hasn't been changed (connect/exit notices also require a #define in config.h).

> If you have further questions about server notices (implementation, etc.),
> please consult the ircu source code and/or e-mail coder-com@undernet.org.

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