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Annotation of ircnowd/NEWS, Revision 1.1

1.1     ! bountyht    1:
        !             2:                      ngIRCd - Next Generation IRC Server
        !             3:                            http://ngircd.barton.de/
        !             4:
        !             5:                (c)2001-2021 Alexander Barton and Contributors.
        !             6:                ngIRCd is free software and published under the
        !             7:                    terms of the GNU General Public License.
        !             8:
        !             9:                                   -- NEWS --
        !            10:
        !            11: ngIRCd 26.1 (2021-01-02)
        !            12:
        !            13:   - This release is a bugfix release only, without new features.
        !            14:
        !            15: ngIRCd 26 (2020-06-20)
        !            16:
        !            17:   ngIRCd 26~rc2 (2020-06-11)
        !            18:   - Add AppStream metadata file (contrib/de.barton.ngircd.metainfo.xml).
        !            19:   - Various bug fixes, see the ChangeLog. No new or changed functionality.
        !            20:
        !            21:   ngIRCd 26~rc1 (2020-05-10)
        !            22:   - Allow up to 512 characters per line in MOTD and help text files (but keep
        !            23:     in mind that lines can't get that long, because they have to be prefixed
        !            24:     before being sent to the client). But this allows for more fancy MOTDs :-)
        !            25:     Closes #271.
        !            26:   - Show the actually allowed channel types in the ISUPPORT(005) numeric which
        !            27:     are configured by the "AllowedChannelTypes" configuration variable.
        !            28:     Closes #273.
        !            29:   - Handle commands in the read buffer before reading more data and don't wait
        !            30:     for the network in this case: If there are more bytes in the read buffer
        !            31:     already than a single valid IRC command can get long (513 bytes), wait for
        !            32:     this/those command(s) to be handled first and don't try to read even more
        !            33:     data from the network (which most probably would overflow the read buffer
        !            34:     of this connection soon).
        !            35:   - Log G-/K-Line changes only when not initiated by a server: this prevents
        !            36:     the log from becoming spammed during "net bursts".
        !            37:   - Update test suite to include SSL tests, including checking for reloading
        !            38:     certificates during runtime.
        !            39:   - Add support for GnuTLS certificate reload, which is quite handy when using
        !            40:     Let's Encrypt, for example. Until now this was only supported when linked
        !            41:     with OpenSSL. Thanks a lot, Hilko Bengen <bengen@hilluzination.de>!
        !            42:   - Allow setting arbitrary channel modes in the configuration file by handling
        !            43:     them like in MODE commands, and allow multiple "Modes =" lines per [Channel]
        !            44:     section. Thanks to Michi <michi+ngircd@dataswamp.org>!
        !            45:     Closes #55.
        !            46:   - Add "FNC" (forced nick changes) to ISUPPORT(005) numeric. Most probably
        !            47:     this doesn't make any difference to any client, but it seems correct.
        !            48:     See <http://www.irc.org/tech_docs/005.html> for details.
        !            49:   - Enhance handling of command line errors, and return with exit code 0 ("no
        !            50:     error") when "--help" or "--version" is used (which resulted in exit code 1,
        !            51:     "error" before). Exit with code 2 ("command line error") for all other
        !            52:     invalid command line options, and show the error message itself on stderr
        !            53:     (instead of stdout and exit code 1, "generic error", as before).
        !            54:     This new behaviour is more in line with the GNU "coding standards",
        !            55:     see <https://www.gnu.org/prep/standards/html_node/_002d_002dhelp.html>.
        !            56:   - Add ./contrib/nglog.sh: This script parses the log output of ngircd(8),
        !            57:     and colorizes the messages according to their log level. Example usage:
        !            58:     ngircd -f $PWD/doc/sample-ngircd.conf -np | ./contrib/nglog.sh
        !            59:   - Enlarge buffers of info texts to 128 bytes. This includes:
        !            60:     - "Real name" of a client (4th filed of the USER command).
        !            61:     - Server info text ("Info" configuration option).
        !            62:     - Admin info texts and email address ("AdminInfo1", "AdminInfo2" and
        !            63:       "AdminEmail" configuration options).
        !            64:     - Network name ("Network" configuration option).
        !            65:     The limit was 64 bytes before ...
        !            66:     Closes #258.
        !            67:   - Streamline handling of invalid and unset server name: Don't exit during
        !            68:     runtime (REHASH command, HUP signal), because the server name can't be
        !            69:     changed in this case anyway and the new invalid name will be ignored.
        !            70:   - Slightly reorder startup steps, and enhance logging:
        !            71:     - Show name of configuration file at the beginning of start up.
        !            72:     - Add a message when ngIRCd is ready, including its host name.
        !            73:     - Show name of configuration file on REHASH (SIGHUP), too.
        !            74:     - Change level of "done message" to NOTICE, like "starting" & "ready".
        !            75:     - Initialize IO functions before channels, connections, clients, ...
        !            76:   - configure.ng: OpenSSL can depends on lz or latomic so use pkg-config to
        !            77:     find those dependencies and fallback to existing mechanism.
        !            78:     Closes #256.
        !            79:
        !            80: ngIRCd 25 (2019-01-23)
        !            81:
        !            82:   - Implement new configuration option "MaxPenaltyTime", which configures the
        !            83:     maximum penalty time increase in seconds, per penalty event. Set to -1 for
        !            84:     no limit (the default), 0 to disable penalties altogether. ngIRCd doesn't
        !            85:     use penalty increases higher than 2 seconds during normal operation, so
        !            86:     values higher than 1 rarely make sense.
        !            87:     Disabling (or reducing) penalties can greatly speed up "make check" runs
        !            88:     for example, see below, but are mostly a debugging feature and normally
        !            89:     not meant to be used on production systems!
        !            90:     Some example timings running "make check" from my macOS workstation:
        !            91:      - MaxPenaltyTime not set: 4:41,79s
        !            92:      - "MaxPenaltyTime = 1":   3:14,71s
        !            93:      - "MaxPenaltyTime = 0":     25,46s
        !            94:     Closes #249 and #251.
        !            95:   - Update Xcode project for latest Xcode version (10.0)
        !            96:   - Allow a 5th parameter in WEBIRC. Thanks to "ItsOnlyBinary".
        !            97:     Closes #247.
        !            98:
        !            99:   ngIRCd 25~rc1 (2018-08-11)
        !           100:   - Only send TOPIC updates to a channel when the topic actually changed:
        !           101:     This prevents the channel from becoming flooded by unnecessary TOPIC update
        !           102:     messages, that can happen when IRC services try to enforce a certain topic
        !           103:     but which is already set (at least on the local server), for example.
        !           104:     Therefore still forward it to all servers, but don't inform local clients
        !           105:     (still update setter and timestamp information, though!).
        !           106:   - Update Xcode project for latest Xcode version (9.2). This includes adding
        !           107:     missing and deleting obsolete file references.
        !           108:   - Handle user mode "C" ("Only users that share a channel are allowed to send
        !           109:     messages") like user mode "b" ("block private messages and notices"): allow
        !           110:     messages from servers, services, and IRC Operators, too. Change proposed by
        !           111:     "wowaname" back in 2015 in #ngircd, thanks!
        !           112:   - Allow IRC Ops and remote servers to KILL service clients: such clients
        !           113:     behave like regular users, therefore IRC operators and servers should be
        !           114:     able to KILL them: for example to resolve nick collisions.
        !           115:     Closes #242.
        !           116:
        !           117: ngIRCd 24 (2017-01-20)
        !           118:
        !           119:   ngIRCd 24~rc1 (2017-01-07)
        !           120:   - Log privilege violations and failed OPER request with log level "error"
        !           121:     and send it to the "&SERVER" channel, too.
        !           122:   - Immediately shut down connection when receiving an "ERROR" command,
        !           123:     don't wait for the peer to close the connection. This allows the daemon
        !           124:     to forward the received "ERROR" message in the network, instead of the
        !           125:     very generic "client closed connection" message.
        !           126:   - Explicitly forbid remote servers to modify "x-lines" (G-LINES) when the
        !           127:     "AllowRemoteOper" configuration option isn't set, even when the command
        !           128:     seems to originate from the remote server itself: this prevents GLINE's
        !           129:     to become set during server handshake in this case (what wouldn't be
        !           130:     possible during regular runtime when a remote IRC Op sends the command)
        !           131:     and what can't be undone by IRC Ops later on (because of the missing
        !           132:     "AllowRemoteOper" option) ...
        !           133:   - Update Xcode project for latest Xcode version (8.0), and fix "duplicate
        !           134:     symbols" error messages when building (linking) the binary.
        !           135:   - Add "Documentation" variables to systemd configuration files.
        !           136:   - Make sure that SYSCONFDIR is always set, which can be handy when
        !           137:     using source code linters when ./configure hasn't been run already.
        !           138:   - Add the new "PAMServiceName" configuration option to specify the name
        !           139:     used as PAM service name. This setting allows to run multiple ngIRCd
        !           140:     instances with different PAM configurations for each instance.
        !           141:     Thanks to Christian Aistleitner <christian@quelltextlich.at> for the
        !           142:     patch, closes #226.
        !           143:   - Add an ".editorconfig" file to the project.
        !           144:   - Limit the number of message target, and suppress duplicates: This
        !           145:     prevents an user from flooding the server using commands like this:
        !           146:     "PRIVMSG nick1,nick1,nick1,...".
        !           147:     Duplicate targets are suppressed silently (channels and clients).
        !           148:     In addition, the maximum number of targets per PRIVMSG, NOTICE, ...
        !           149:     command are limited to MAX_HNDL_TARGETS (25). If there are more, the
        !           150:     daemon sends the new 407 (ERR_TOOMANYTARGETS_MSG) numeric, containing
        !           151:     the first target that hasn't been handled any more. Closes #187.
        !           152:   - Make contrib/platformtest.sh script more portable, and only show
        !           153:     "runs=Y" when the test suite really has been passed successfully.
        !           154:
        !           155: ngIRCd 23 (2015-11-16)
        !           156:
        !           157:   ngIRCd 23~rc1 (2015-09-06)
        !           158:   - Use "NOTICE *" before registration instead of "NOTICE AUTH". "AUTH" is
        !           159:     a valid nickname so sending notices to it is probably not a good idea.
        !           160:     Use "*" as the target instead as done with numerics when the nick is not
        !           161:     available. This mimics the behavior in Charybdis, IRCD-Hybrid, InspIRCd
        !           162:     2.2, Plexus 4, etc. Closes #217.
        !           163:     The "NoticeAuth" configuration variable (ngircd.conf) has been renamed
        !           164:     to "NoticeBeforeRegistration" accordingly, but the old name is still
        !           165:     supported for compatibility reasons.
        !           166:   - Implement new channel mode "N" (regular users can't change their nick
        !           167:     name while on this channel). Closes #214.
        !           168:   - Keep track of who placed bans, invites, and excepts.
        !           169:     Idea and implementation by LucentW, Thanks! Closes #203.
        !           170:   - Implement numeric RPL_LISTSTART(321). lightIRC and other clients
        !           171:     expecting RPL_LISTSTART should now behave correctly.
        !           172:     Idea and implementation by LucentW, Thanks! Closes #207.
        !           173:   - Streamline the effect of "MorePrivacy" option: Update documentation
        !           174:     in ngircd.conf(5); don't hide channels for IRC Ops on LIST and don't
        !           175:     hide IP addresses/hostnames on WHOIS when "MorePrivacy" is in effect.
        !           176:     This closes #198.
        !           177:   - IRC operators now can kick anyone when "OperCanMode" is set.
        !           178:     Idea and implementation by LucentW, Thanks! Closes #202.
        !           179:   - Implement user mode "I": Hide channels on WHOIS: this mode prevents
        !           180:     ngIRCd from showing channels on WHOIS (IRC Operators can always see
        !           181:     the channel list).
        !           182:     Idea and implementation by LucentW, Thanks! Closes #197.
        !           183:   - INVITE command: Implement ERR_USERNOTONSERV(504) numeric and make sure
        !           184:     that the target user is on the same server when inviting other users
        !           185:     to local ("&") channels.
        !           186:     Idea by Cahata, thanks! Closes #183.
        !           187:   - MODE command: Always report channel creation time. Up to now when
        !           188:     receiving a MODE command, ngIRCd only reported the channel creation
        !           189:     time to clients that were members of the channel. This patch reports
        !           190:     the channel creation time to all clients, regardless if they are joined
        !           191:     to that channel or not. At least ircd-seven behaves like this.
        !           192:     This closes #188. Reported by Cahata, thanks!
        !           193:
        !           194: ngIRCd 22.1 (2015-04-06)
        !           195:
        !           196:   - Update "CipherList" to not enable SSLv3 by default. Idea, initial patch,
        !           197:     and testing by Christoph Biedl <ngircd.anoy@manchmal.in-ulm.de>.
        !           198:   - Change ngIRCd test suite not to use DNS lookups: Different operating
        !           199:     systems do behave quite differently when doing DNS lookups, for example
        !           200:     "127.0.0.1" sometimes resolves to "localhost" and sometimes to
        !           201:     "localhost.localdomain" (for example OpenBSD). And other OS resolve
        !           202:     "localhost" to the real host name (for example Cygwin). So not using
        !           203:     DNS at all makes the test site much more portable.
        !           204:
        !           205: ngIRCd 22 (2014-10-11)
        !           206:
        !           207:   - Match all list patterns case-insensitive: this affects the invite-,
        !           208:     ban-, and except lists, as well as G-Lines an K-Lines.
        !           209:     Problem pointed out by "wowaname" on #ngircd, thanks!
        !           210:
        !           211:   ngIRCd 22~rc1 (2014-09-29)
        !           212:   - Sync "except lists" between servers: Up to now, ban, invite, and G-Line
        !           213:     lists have been synced between servers while linking -- but obviously
        !           214:     nobody noticed that except list have been missing ever since. Until now.
        !           215:     Thanks to "j4jackj", who reported this issue in #ngircd.
        !           216:   - Allow longer user names (up to 63 characters) for authentication.
        !           217:   - Increase MAX_SERVERS from 16 to 64: There are installations out there
        !           218:     that would like to configure more than 16 links per server, so increase
        !           219:     this limit. Best would be to get rid of MAX_SERVERS altogether and make
        !           220:     if fully dynamic, but start with this quick and dirty hack ...
        !           221:   - Test suite/platformtest.sh: Detect when tests have been skipped.
        !           222:   - Allow "DefaultUserModes" to set all possible modes, including modes only
        !           223:     settable by IRC Operators.
        !           224:   - Implement user mode "F": "relaxed flood protection". Clients with mode
        !           225:     "F" set are allowed to rapidly send data to the daemon. This mode is only
        !           226:     settable by IRC Operators and can cause problems in the network -- so be
        !           227:     careful and only set it on "trusted" clients!
        !           228:     User mode "F" is used by Bahamut for this purpose, for example.
        !           229:   - Use server password when PAM is compiled in but disabled.
        !           230:   - Streamline punctuation of log messages.
        !           231:   - Return ISUPPORT(005) numerics on "VERSION". This is how ircd-seven,
        !           232:     Charybdis, Hybrid, and InspIRCd behave, for example.
        !           233:   - configure: Only link "contrib/Debian" if it exists, which isn't the case
        !           234:     on "VPATH builds", for example.
        !           235:   - Show the account name in WHOIS. This uses the same numeric as Charybdis
        !           236:     and ircu families: WHOISLOGGEDIN(330).
        !           237:   - Pattern matching: Remove "range matching" in our pattern matching code
        !           238:     using the "[...]" syntax, because [ and ] are valid characters in nick
        !           239:     names and one has to quote them currently using the "\" character, which
        !           240:     is quite unexpected for users.
        !           241:   - platformtest.sh: New option "-x", don't regenerate build system and
        !           242:     allow using separate source and build trees.
        !           243:   - Test suite: explicitly enable glibc memory checking.
        !           244:   - Make "MODE -k" handling more robust and compatible, send "fake '*' key"
        !           245:     in all replies.
        !           246:   - portabtest: Actually test the functions snprintf(), strlcpy(), strlcat(),
        !           247:     and vsnprintf() for correctness, not only existence (which was quite
        !           248:     useless, because if they weren't available, the program could not have
        !           249:     been linked at all ...).
        !           250:   - Implement new configuration option "Network": it is used to set the
        !           251:     (completely optional) "network name", to which this instance of the
        !           252:     daemon belongs. When set, this name is used in the ISUPPORT(005) numeric
        !           253:     which is sent to all clients connecting to the server after logging in.
        !           254:   - Update doc/Platforms.txt.
        !           255:   - Various code cleanups, remove unused code, streamline error handling.
        !           256:     Remove all imp.h and exp.h header files, support non-standard vsnprintf()
        !           257:     return codes, and fix some K&R C portability issues. Streamline
        !           258:     DEBUG_ARRAY, DEBUG_BUFFER, DEBUG_IO, DEBUG_ZIP definitions.
        !           259:   - Increase penalty time to 10 seconds when handling OPER commands with an
        !           260:     invalid password.
        !           261:
        !           262: ngIRCd 21.1 (2014-03-25)
        !           263:
        !           264:   - Don't ignore but use the server password when PAM is compiled in but
        !           265:     disabled. Thanks to Roy Sindre Norangshol <roy.sindre@norangshol.no>!
        !           266:   - doc/Platforms.txt: Update from master branch.
        !           267:   - doc/Services.txt: Update information for Anope 2.x.
        !           268:   - configure: add support for the LDFLAGS_END and LIBS_END variables to add
        !           269:     linker flags and libraries at the end of the configure run (CFLAGS_END has
        !           270:     been implemented already).
        !           271:   - Update Copyright notices for 2014 :-)
        !           272:
        !           273: ngIRCd 21 (2013-10-30)
        !           274:
        !           275:   - Call arc4random_stir() in forked subprocesses, when available. This
        !           276:     is required by FreeBSD <10 and current NetBSD at least to correctly
        !           277:     initialize the "arc4" random number generator on these platforms.
        !           278:
        !           279:   ngIRCd 21~rc2 (2013-10-20)
        !           280:   - Report the correct configuration file name on configuration errors,
        !           281:     support longer configuration lines, and warn when lines are truncated.
        !           282:
        !           283:   ngIRCd 21~rc1 (2013-10-05)
        !           284:   - Actually KILL clients on GLINE/KLINE. (Closes bug #156)
        !           285:   - Add support to show all user links using the "STATS L" (uppercase)
        !           286:     command (restricted to IRC Operators).
        !           287:   - Implement configurable SSL cipher list selection for GnuTLS and OpenSSL
        !           288:     using the new configuration option "CipherList". In addition, this
        !           289:     changes the defaults to more secure values: "HIGH:!aNULL:@STRENGTH" for
        !           290:     OpenSSL, and "SECURE128" for GnuTLS.
        !           291:   - Show connection flag "s" (SSL) in RPL_TRACE{LINK|SERVER} messages: now
        !           292:     you can check if a server-to-server link is SSL-encrypted or not using
        !           293:     the IRC "TRACE" command.
        !           294:   - Implement the new configuration option "DefaultUserModes" which lists
        !           295:     user modes that become automatically set on new local clients right
        !           296:     after login. Please note that only modes can be set that the client
        !           297:     could set on itself, so you can't set "a" (away) or "o" (IRC Op),
        !           298:     for example! User modes "i" (invisible) or "x" (cloaked) etc. are
        !           299:     "interesting", though. (Closes bug #160)
        !           300:   - Add support for the new METADATA "account" property, which allows
        !           301:     services to automatically identify users after netsplits and across
        !           302:     service restarts.
        !           303:   - Implement a new configuration option "AllowedChannelTypes" that lists
        !           304:     all allowed channel types (channel prefixes) for newly created channels
        !           305:     on the local server. By default, all supported channel types are allowed.
        !           306:     If set to the empty string, local clients can't create new channels at
        !           307:     all, which equals the old "PredefChannelsOnly = yes" setting.
        !           308:     This change deprecates the "PredefChannelsOnly" variable, too, but it is
        !           309:     still supported and translated to the appropriate "AllowedChannelTypes"
        !           310:     setting. When the old "PredefChannelsOnly" variable is processed, a
        !           311:     warning message is logged. (Closes bug #152)
        !           312:   - Add support for "client certificate fingerprinting". When a client
        !           313:     passes an SSL certificate to the server, the "fingerprint" will be
        !           314:     forwarded in the network which enables IRC services to identify the
        !           315:     user using this certificate and not using passwords.
        !           316:   - Implement a new configuration option "IncludeDir" in the "[Options]"
        !           317:     section that can be used to specify a directory which can contain
        !           318:     further configuration files and configuration file snippets matching
        !           319:     the pattern "*.conf". These files are read in after the main server
        !           320:     configuration file ("ngircd.conf" by default) has been read in and
        !           321:     parsed.  The default is "$SYSCONFDIR/ngircd.conf.d", so that it is
        !           322:     possible to adjust the configuration only by placing additional files
        !           323:     into this directory. (Closes bug #157)
        !           324:   - Add Travis-CI configuration file (".travis.yml") to project.
        !           325:   - ngIRCd now accepts user names including "@" characters, saves the
        !           326:     unmodified name for authentication but stores only the part in front
        !           327:     of the "@" character as "IRC user name". And the latter is how
        !           328:     ircd2.11, Bahamut, and irc-seven behave as well. (Closes bug #155)
        !           329:   - Lots of IRC "information functions" like ADMIN, INFO, ... now accept
        !           330:     server masks and names of connected users (in addition to server names)
        !           331:     for specifying the target server of the command. (Closes bug #153)
        !           332:   - Implement a new configuration option "IdleTimeout" in the "[Limits]"
        !           333:     section of the configuration file which can be used to set a timeout
        !           334:     in seconds after which the whole daemon will shutdown when no more
        !           335:     connections are left active after handling at least one client.
        !           336:     The default is 0, "never".
        !           337:     This can be useful for testing or when ngIRCd is started using "socket
        !           338:     activation" with systemd(8), for example.
        !           339:   - Implement support for systemd(8) "socket activation".
        !           340:   - Enable WHOIS to display information about IRC Services using the new
        !           341:     numeric 310(RPL_WHOISSERVICE) This numeric is used for this purpose by
        !           342:     InspIRCd, for example -- but as usual, other numerics are in use, too,
        !           343:     like 613 in UltimateIRCd ...
        !           344:     Please note that neither the Operator (+o) not the "bot status" (+B)
        !           345:     of an IRC service is displayed in the output.
        !           346:   - Update systemd(8) example configuration files in ./contrib/ directory:
        !           347:     the "ngircd.service" file now uses the "forking" service type which
        !           348:     enhances the log messages shown by "systemctl status ngircd.service",
        !           349:     and the new "ngircd.socket" file configures a systemd socket that
        !           350:     configures a socket for ngIRCd and launches the daemon on demand.
        !           351:   - Enhance help system and the HELP command: now a "help text file" can be
        !           352:     set using the new configuration option "HelpFile" ("global" section),
        !           353:     which is read in and parsed on server startup and configuration reload,
        !           354:     and then is used to output individual help texts to specific topics.
        !           355:     Please see the file ./doc/Commands.txt for details.
        !           356:
        !           357: ngIRCd 20.3 (2013-08-23)
        !           358:
        !           359:   - This release is a bugfix release only, without new features.
        !           360:   - Security: Fix a denial of service bug (server crash) which could happen
        !           361:     when the configuration option "NoticeAuth" is enabled (which is NOT the
        !           362:     default) and ngIRCd failed to send the "notice auth" messages to new
        !           363:     clients connecting to the server (CVE-2013-5580).
        !           364:
        !           365: ngIRCd 20.2 (2013-02-15)
        !           366:
        !           367:   - This release is a bugfix release only, without new features.
        !           368:   - Security: Fix a denial of service bug in the function handling KICK
        !           369:     commands that could be used by arbitrary users to crash the daemon
        !           370:     (CVE-2013-1747).
        !           371:
        !           372: ngIRCd 20.1 (2013-01-02)
        !           373:
        !           374:   - This release is a bugfix release only, without new features.
        !           375:
        !           376: ngIRCd 20 (2012-12-17)
        !           377:
        !           378:   - Allow user names ("INDENT") up to 20 characters when ngIRCd has not
        !           379:     been configured for "strict RFC mode". This is useful if you are using
        !           380:     external (PAM) authentication mechanisms that require longer user names.
        !           381:     Patch suggested by Brett Smith <brett@w3.org>, see
        !           382:     <http://arthur.barton.de/pipermail/ngircd-ml/2012-October/000579.html>.
        !           383:
        !           384:   ngIRCd 20~rc2 (2012-12-02)
        !           385:   - Rework cloaked hostname handling and implement the "METADATA cloakhost"
        !           386:     subcommand: Now ngIRCd uses two fields internally, one to store the
        !           387:     "real" hostname and one to save the "cloaked" hostname. This allows
        !           388:     "foreign servers" (aka "IRC services") to alter the real and cloaked
        !           389:     hostnames of clients without problems, even when the user itself issues
        !           390:     additional "MODE +x" and "MODE -x" commands.
        !           391:
        !           392:   ngIRCd 20~rc1 (2012-11-11)
        !           393:   - Update doc/Services.txt: describe the upcoming version of Anope 1.9.8,
        !           394:     then including a protocol module for ngIRCd. And remove our own patches
        !           395:     in ./contrib/Anope because they aren't supported any more ...
        !           396:   - Implement new "METADATA" command which can be used by remote servers
        !           397:     and IRC services to update client metadata like the client info text
        !           398:     ("real name"), user name, and hostname, and use this command to
        !           399:     configure an cloaked hostname (user mode "+x") on remote servers:
        !           400:     This prevents "double cloaking" of hostnames and even cloaked
        !           401:     hostnames are in sync on all servers supporting "METADATA" now.
        !           402:   - Implement new IRC "SVSNICK" command to allow remote servers (and IRC
        !           403:     services) to change nicknames of already registered users. The SVSNICK
        !           404:     command itself doesn't change the nickname, but it becomes forwarded
        !           405:     to the server to which the user is connected to. And then this server
        !           406:     initiates the real nickname changing using regular NICK commands.
        !           407:     This allows to run mixed networks with old servers not supporting the
        !           408:     SVSNICK command, because SVSNICK commands for nicknames on such servers
        !           409:     are silently ignored and don't cause a desynchronization of the network.
        !           410:   - New configuration option "MaxListSize" to configure the maximum number
        !           411:     of channels returned by a LIST command. The default is 100, as before.
        !           412:   - Implement user mode "b", "block messages": when a user has set mode "b",
        !           413:     all private messages and notices to this user are blocked if they don't
        !           414:     originate from a registered user, an IRC Op, server or service. The
        !           415:     originator gets an error numeric sent back in this case,
        !           416:     ERR_NONONREG_MSG (486), which is used by UnrealIRCd, too. (Closes #144)
        !           417:   - Implement channel mode "V" (invite disallow): If the new channel mode
        !           418:     "V" is set, the INVITE command becomes invalid and all clients get the
        !           419:     new ERR_NOINVITE_MSG (518) reply. (Closes #143)
        !           420:   - Implement channel mode "Q" and user mode "q": Both modes protect users
        !           421:     from channel kicks: only IRC operators and servers can kick users having
        !           422:     mode "q" or in channels with mode "Q". (Closes #141)
        !           423:   - Allow users to "cloak" their hostname only when the configuration
        !           424:     variable "CloakHostModeX" (introduced in 19.2) is set. Otherwise, only
        !           425:     IRC operators, other servers, and services are allowed to set the user
        !           426:     mode "+x": this prevents regular users from changing their hostmask to
        !           427:     the name of the IRC server itself, which confused quite a few people ;-)
        !           428:     (Closes #133)
        !           429:   - New configuration option "OperChanPAutoOp": If disabled, IRC operators
        !           430:     don't become channel operators in persistent channels when joining.
        !           431:     Enabled by default, which has been the behavior of ngIRCd up to this
        !           432:     patch. (Closes #135)
        !           433:   - Allow IRC operators to see secret (+s) channels in LIST command as long
        !           434:     as the "MorePrivacy" configuration option isn't enabled in the
        !           435:     configuration file. (Closes #136)
        !           436:   - Implement new (optional) IRC+ "CHARCONV" command to set a client
        !           437:     character set that the server translates all messages to/from UTF-8.
        !           438:     This feature requires the "libiconv" library and must be enabled using
        !           439:     the new "--with-iconv" option of the ./configure script. See
        !           440:     doc/Protocol.txt for details. (Closes #109)
        !           441:   - Implement user mode "B" ("Bot flag"): it is settable and unsettable by
        !           442:     every (non-restricted) client. This is how Unreal and InspIRCd do
        !           443:     behave, and so do we :-)
        !           444:   - Implement channel mode "M": Only the server, identified users and IRC
        !           445:     operators are able to talk in such a channel.
        !           446:   - Block nicknames that are reserved for services and are defined using the
        !           447:     configuration variable "ServiceMask" in "Server" blocks; And this
        !           448:     variable now can handle more than one mask separated by commas.
        !           449:   - Implemented XOP channel user modes: "Half Op" ("+h", prefix "%") can set
        !           450:     the channel modes +imntvIbek and kick all +v and normal users; "Admin"
        !           451:     ("+a", prefix "&") can set channel modes +imntvIbekoRsz and kick all +o,
        !           452:     +h, +v and normal users; and "Owner" ("+q", prefix "~") can set channel
        !           453:     modes +imntvIbekoRsz and kick all +a, +o, +h, +v and normal users.
        !           454:   - Implement hashed cloaked hostnames for both the "CloakHost" and
        !           455:     "CloakHostModeX" configuration options: now the admin can use the new
        !           456:     '%x' placeholder to insert a hashed version of the clients hostname,
        !           457:     and the new configuration option "CloakHostSalt" defines the salt for
        !           458:     the hash function. When "CloakHostSalt" is not set (the default), a
        !           459:     random salt will be generated after each server restart.
        !           460:
        !           461: ngIRCd 19.2 (2012-06-19)
        !           462:
        !           463:   ngIRCd 19.2~rc1 (2012-06-13)
        !           464:   - New configuration option "CloakHostModeX" to configure the hostname
        !           465:     that gets used for IRC clients which have user mode "+x" enabled.
        !           466:     Up to now, the name of the IRC server itself has been used for this,
        !           467:     which still is the default when "CloakHostModeX" isn't set.
        !           468:   - Add instructions for setting up Atheme IRC services.
        !           469:   - Implement support for IRC capability handling, the new "CAP" command,
        !           470:     and capability "multi-prefix" which allows both the NAME and WHO command
        !           471:     handlers to return more than one "class prefix" to the client.
        !           472:
        !           473: ngIRCd 19.1 (2012-03-19)
        !           474:
        !           475:   - Really include _all_ patches to build the Anope module into the
        !           476:     distribution archive ... ooops!
        !           477:
        !           478: ngIRCd 19 (2012-02-29)
        !           479:
        !           480:   ngIRCd 19~rc1 (2012-02-12)
        !           481:   - Update preliminary ngIRCd protocol module for Anope 1.9.6, which now
        !           482:     is the only supported version.
        !           483:   - New numeric RPL_WHOISHOST_MSG(378), which returns the DNS host name
        !           484:     (if available) and the IP address of a client in the WHOIS reply.
        !           485:     Only the user itself and local IRC operators get this numeric.
        !           486:   - Implement channel exception list (mode 'e'). This allows a channel
        !           487:     operator to define exception masks that allow users to join the
        !           488:     channel even when a "ban" would match and prevent them from joining:
        !           489:     the exception list (e) overrides the ban list (b).
        !           490:   - Implement user mode 'C': If the target user of a PRIVMSG or NOTICE
        !           491:     command has the user mode 'C' set, it is required that both sender
        !           492:     and receiver are on the same channel. This prevents private flooding
        !           493:     by completely unknown clients.
        !           494:   - New RPL_WHOISREGNICK_MSG(307) numeric in WHOIS command replies: it
        !           495:     indicates if a nickname is registered (if user mode 'R' set).
        !           496:   - Limit channel invite, ban, and exception lists to 50 entries and fix
        !           497:     duplicate check and error messages when adding already listed entries
        !           498:     or deleting no (longer) existing ones.
        !           499:   - Limit the number of list items in the reply of LIST (100), WHO (25),
        !           500:     WHOIS (10), and WHOWAS (25) commands.
        !           501:   - Limit the MODE command to handle a maximum number of 5 channel modes
        !           502:     that require an argument (+Ibkl) per call and report this number
        !           503:     in the ISUPPORT(005) numeric: "MODES=5".
        !           504:   - LINKS command: support <mask> parameter to limit the reply.
        !           505:   - Add 1 second penalty for every further target on PRIVMSG/NOTICE
        !           506:     commands: this reduces the possibility of flooding channels with
        !           507:     commands like "PRIVMSG/NOTICE #a,#n,#c,... :message" a little bit.
        !           508:     Problem noticed by Cahata, thanks!
        !           509:   - New configuration option "PAMIsOptional": when set, clients not
        !           510:     sending a password are still allowed to connect: they won't become
        !           511:     "identified" and keep the "~" character prepended to their supplied
        !           512:     user name. See "man 5 ngircd.conf" for details.
        !           513:   - Fixed handling of WHO commands. This fixes two bugs: "WHO <nick>"
        !           514:     returned nothing at all if the user was "+i" (reported by Cahata,
        !           515:     thanks) and "WHO <nick|nickmask>" returned channel names instead
        !           516:     of "*" when the user was member of a (visible) channel.
        !           517:   - LUSERS reply: only count channels that are visible to the requesting
        !           518:     client, so the existence of secret channels is no longer revealed by
        !           519:     using LUSERS. Reported by Cahata, thanks!
        !           520:   - Unknown user and channel modes no longer stop the mode parser, but
        !           521:     are simply ignored. Therefore modes after the unknown one are now
        !           522:     handled. This is how ircd2.10/ircd2.11/ircd-seven behave, at least.
        !           523:     Reported by Cahata, thanks!
        !           524:   - Implement IRC commands "GLINE" and "KLINE" to ban users. G-Lines are
        !           525:     synchronized between server on peering, K-Lines are local only.
        !           526:     If you use "*!<user>@<host>" or "*!*@<host>" masks, these connections
        !           527:     are blocked even before the user is fully logged in (before PASS,
        !           528:     NICK, and USER commands have been processed) and before the child
        !           529:     processes for authentication are forked, so resource usage is smaller.
        !           530:   - Added doc/Modes.txt: document modes supported by ngIRCd.
        !           531:   - Implement user mode "R": indicates that the nickname of this user
        !           532:     is "registered". This mode isn't handled by ngIRCd itself, but must
        !           533:     be set and unset by IRC services like Anope.
        !           534:   - Implement channel mode "R": only registered users (having the user
        !           535:     mode "R" set) are allowed to join this channel.
        !           536:   - Test suite: bind to loopback (127.0.0.1) interface only.
        !           537:   - Handle unknown user and channel modes: these modes are saved and
        !           538:     forwarded to other servers, but ignored otherwise.
        !           539:   - Handle channel user modes 'a', 'h', and 'q' from remote servers.
        !           540:     These channel user modes aren't used for anything at the moment,
        !           541:     but ngIRCd knows that these three modes are "channel user modes"
        !           542:     and not "channel modes", that is that these modes take an "nickname"
        !           543:     argument. Like unknown user and channel modes, these modes are saved
        !           544:     and forwarded to other servers, but ignored otherwise.
        !           545:
        !           546: ngIRCd 18 (2011-07-10)
        !           547:
        !           548:   - Add preliminary ngIRCd protocol module for Anope 1.9 to contrib/Anope/.
        !           549:
        !           550:   ngIRCd 18~rc2 (2011-06-29)
        !           551:   - GnuTLS: use 1024 bits as minimum size of the DH prime. This enables
        !           552:     ngIRCd to accept incoming connections from other servers and clients
        !           553:     that "only" use at least 1024 bits again, like ngIRCd 17 did (and no
        !           554:     longer requires 2048 bits for incoming connections).
        !           555:
        !           556:   ngIRCd 18~rc1 (2011-06-27)
        !           557:   - New configuration option "MorePrivacy" to "censor" some user information.
        !           558:     When enabled, signon time and idle time is left out. Part and quit
        !           559:     messages are made to look the same. WHOWAS requests are silently dropped.
        !           560:     All of this is useful if one wish to conceal users that access the ngircd
        !           561:     servers from TOR or I2P.
        !           562:   - New configuration option "ScrubCTCP" to scrub incoming CTCP commands. If
        !           563:     activated, the server silently drops incoming CTCP requests from both
        !           564:     other servers and from users. The server that scrubs CTCP will not forward
        !           565:     the CTCP requests to other servers in the network either, which can spell
        !           566:     trouble if not every oper knows about the CTCP-scrubbing. Scrubbing CTCP
        !           567:     commands also means that it is not possible to send files between users.
        !           568:     There is one exception to the CTCP scrubbing performed: ACTION ("/me
        !           569:     commands") requests are not scrubbed.
        !           570:   - Restructure ngIRCd configuration file: introduce new [Limits], [Options],
        !           571:     and [SSL] sections. The intention of this restructuring is to make the
        !           572:     [Global] section much cleaner, so that it only contains variables that
        !           573:     most installations must adjust to the local requirements. All the optional
        !           574:     variables are moved to [Limits], for configurable limits and timers of
        !           575:     ngIRCd, and [Options], for optional features. All SSL-related variables
        !           576:     are moved to [SSL] and the "SSL"-prefix is stripped. The old variables in
        !           577:     the [Global] section are deprecated now, but are still recognized.
        !           578:     => Don't forget to check your configuration, use "ngircd --configtest"!
        !           579:   - New documentation "how to contribute": doc/Contributing.txt.
        !           580:   - Avoid needlessly scary 'buffer overflow' messages: When the write buffer
        !           581:     space grows too large, ngIRCd has to disconnect the client to avoid
        !           582:     wasting too much memory, which is logged with a scary 'write buffer
        !           583:     overflow' message. Change this to a more descriptive wording.
        !           584:   - New configuration option "RequireAuthPing": PING-PONG on login. When
        !           585:     enabled, this configuration option lets ngIRCd send a PING with an numeric
        !           586:     "token" to clients logging in; and it will not become registered in the
        !           587:     network until the client responds with the correct PONG.
        !           588:   - New configuration option "NoticeAuth": send NOTICE AUTH on connect. When
        !           589:     active, ngircd will send "NOTICE AUTH" messages on client connect time
        !           590:     like e.g. snircd (QuakeNet) does.
        !           591:   - Add support for up to 3 targets in WHOIS queries, also allow up to one
        !           592:     wildcard query from local hosts. Follows ircd 2.10 implementation rather
        !           593:     than RFC 2812. At most 10 entries are returned per wildcard expansion.
        !           594:   - ngircd.conf(5) manual page: describe types of configuration variables
        !           595:     (booleans, text strings, integer numbers) and add type information to each
        !           596:     variable description.
        !           597:   - Terminate incoming connections on HTTP commands "GET" and "POST".
        !           598:   - New configuration option "CloakHost": when set, this host name is used for
        !           599:     every client instead of the real DNS host name (or IP address).
        !           600:   - New configuration option "CloakUserToNick": when enabled, ngIRCd sets
        !           601:     every clients' user name to their nickname and hides the user name
        !           602:     supplied by the IRC client.
        !           603:   - Make write buffers bigger, but flush early. Before this change, a client
        !           604:     got disconnected if the buffer flushing at 4k failed, now regular clients
        !           605:     can store up to 32k and servers up 64k even if flushing is not possible at
        !           606:     the moment. This enhances reliability on slow links.
        !           607:   - Allow "Port = 0" in [Server] blocks. Port number 0 marks remote servers
        !           608:     that try to connect to this daemon, but where this daemon never tries to
        !           609:     establish a connection on its own: only incoming connections are allowed.
        !           610:   - Enable WHOIS command to return information about services.
        !           611:   - Implement channel mode 'O': "IRC operators only". This channel mode is
        !           612:     used on DALnet (bahamut), for example.
        !           613:   - Remove support for ZeroConf/Bonjour/Rendezvous service registration
        !           614:     including the "[No]ZeroConf" configuration option.
        !           615:   - Deprecate NoXX-Options in ngircd.conf and move new variants into our new
        !           616:     [Options] section: 'NoDNS=no' => 'DNS=yes', 'NoIdent=no' => 'Ident=yes',
        !           617:     'NoPAM=no' => 'PAM=yes', and 'NoZeroConf=no' => 'ZeroConf=yes' (and
        !           618:     vice-versa). The defaults are adjusted accordingly and the old variables
        !           619:     in [Global] are still accepted, so there is no functional change.
        !           620:
        !           621: ngIRCd 17.1 (2010-12-19)
        !           622:
        !           623:   - Don't log critical (or worse) messages to stderr
        !           624:   - Remove "error file" when compiled with debug code enabled
        !           625:   - New numeric 329: get channel creation time on "MODE #chan" commands
        !           626:
        !           627: ngIRCd 17 (2010-11-07)
        !           628:
        !           629:   - doc: change path names in sample-ngircd.conf depending on sysconfdir
        !           630:
        !           631:   ngIRCd 17~rc2 (2010-10-25)
        !           632:   - Generate ngIRCd version number from GIT tag.
        !           633:   - Make source code compatible with ansi2knr again. This allows to compile
        !           634:     ngIRCd using a pre-ANSI K&R C compiler again.
        !           635:
        !           636:   ngIRCd 17~rc1 (2010-10-11)
        !           637:   - New configuration option "NoZeroConf" to disable service registration at
        !           638:     runtime even if ngIRCd is compiled with support for ZeroConf (e.g. using
        !           639:     Howl, Avahi or on Mac OS X).
        !           640:   - New configuration option "SyslogFacility" to define the syslog "facility"
        !           641:     (the "target"), to which ngIRCd should send its log messages.
        !           642:     Possible values are system dependent, but most probably "auth", "daemon",
        !           643:     "user" and "local1" through "local7" are possible values; see syslog(3).
        !           644:     Default is "local5" for historical reasons.
        !           645:   - Dump the "internal server state" (configured servers, established
        !           646:     connections and known clients) to the console or syslog when receiving
        !           647:     the SIGUSR2 signal and debug mode is enabled.
        !           648:   - Enable the daemon to disable and enable "debug mode" on runtime using
        !           649:     signal SIGUSR1, when debug code is compiled in, not only on startup
        !           650:     using the command line parameters.
        !           651:   - Implement user mode "x": host name cloaking (closes: #102).
        !           652:   - Change MOTD file handling: ngIRCd now caches the contents of the MOTD
        !           653:     file, so the daemon now requires a HUP signal or REHASH command to
        !           654:     re-read the MOTD file when its content changed.
        !           655:   - Allow IRC ops to change channel modes even without OperServerMode set.
        !           656:   - Allow IRC operators to use MODE command on any channel (closes: #100).
        !           657:   - New configuration option "NoPAM" to disable PAM.
        !           658:   - Implement asynchronous user authentication using PAM, please see the
        !           659:     file doc/PAM.txt for details.
        !           660:   - Add some documentation for using BOPM with ngIRCd, see doc/Bopm.txt.
        !           661:   - Implement user mode "c": receive connect/disconnect NOTICEs. Note that
        !           662:     this new mode requires the user to be an IRC operator.
        !           663:   - Show SSL status in WHOIS output, numeric 275.
        !           664:
        !           665: ngIRCd 16 (2010-05-02)
        !           666:
        !           667:   ngIRCd 16~rc2 (2010-04-25)
        !           668:   - Enhance connection statistics counters: display total number of served
        !           669:     connections on daemon shutdown and when a new client connects using
        !           670:     the new numeric RPL_STATSCONN (250).
        !           671:
        !           672:   ngIRCd 16~rc1 (2010-03-25)
        !           673:   - Implement WEBIRC command used by some Web-IRC frontends. The password
        !           674:     required to secure this command must be configured using the new
        !           675:     "WebircPassword" variable in the ngircd.conf file.
        !           676:   - Remove limit on max number of configured irc operators.
        !           677:   - A new channel mode "secure connections only" (+z) has been implemented:
        !           678:     Only clients using a SSL encrypted connection to the server are allowed
        !           679:     to join such a channel.
        !           680:     But please note three things: a) already joined clients are not checked
        !           681:     when setting this mode, b) IRC operators are always allowed to join
        !           682:     every channel, and c) remote clients using a server not supporting this
        !           683:     mode are not checked either and therefore always allowed to join.
        !           684:
        !           685: ngIRCd 15 (2009-11-07)
        !           686:
        !           687:   ngIRCd 15~rc1 (2009-10-15)
        !           688:   - Do not add default listening port (6667) if SSL ports were specified, so
        !           689:     ngIRCd can be configured to only accept SSL-encrypted connections now.
        !           690:   - Enable IRC operators to use the IRC command SQUIT (instead of the already
        !           691:     implemented but non-standard DISCONNECT command).
        !           692:   - New configuration option "AllowRemoteOper" (disabled by default) that
        !           693:     enables remote IRC operators to use the IRC commands SQUIT and CONNECT
        !           694:     on the local server.
        !           695:   - Enforce upper limit on maximum number of handled commands. This implements
        !           696:     a throttling scheme: an IRC client can send up to 3 commands or 256 bytes
        !           697:     per second before a one second pause is enforced.
        !           698:
        !           699: ngIRCd 14.1 (2009-05-05)
        !           700:
        !           701:   - Security: fix remotely triggerable crash in SSL/TLS code.
        !           702:   - Debian: build ngircd-full-dbg package.
        !           703:   - Allow ping timeout quit messages to show the timeout value.
        !           704:
        !           705: ngIRCd 14 (2009-04-20)
        !           706:
        !           707:   ngIRCd 14~rc1 (2009-03-29)
        !           708:   - Allow creation of persistent modeless channels.
        !           709:   - The INFO command reports the compile time now (if available).
        !           710:   - Support individual channel keys for pre-defined channels: introduce
        !           711:     new configuration variable "KeyFile" in [Channel] sections in ngircd.conf,
        !           712:     here a file can be configured for each pre-defined channel which contains
        !           713:     individual channel keys for different users.
        !           714:   - Remove limit on maximum number of predefined channels in ngircd.conf.
        !           715:
        !           716: ngIRCd 13 (2008-12-25)
        !           717:
        !           718:   ngIRCd 13~rc1 (2008-11-21):
        !           719:   - New version number scheme :-)
        !           720:   - Initial support for IRC services, using a RFC1459 style interface,
        !           721:     tested with IRCServices (http://www.ircservices.za.net/) version 5.1.13.
        !           722:     For this to work, ngIRCd now supports server-server links conforming
        !           723:     to RFC 1459. New ngircd.conf(5) option: ServiceMask.
        !           724:   - Support for SSL-encrypted server-server and client-server links using
        !           725:     OpenSSL (configure: --with-openssl) or GNUTLS (configure: --with-gnutls).
        !           726:     New ngircd.conf(5) options: SSLPorts, SSLKeyFile, SSLKeyFilePassword,
        !           727:     SSLCertFile, SSLDHFile, and SSLConnect.
        !           728:   - Server local channels have been implemented, prefix "&", that are only
        !           729:     visible to users of the same server and are not visible in the network.
        !           730:     In addition ngIRCd creates a "special" channel &SERVER on startup and logs
        !           731:     all the messages to it that a user with mode +s receives.
        !           732:   - New make target "osxpkg" to build a Mac OS X installer package.
        !           733:   - New configuration option "NoIdent" to disable IDENT lookups even if the
        !           734:     daemon is compiled with IDENT support.
        !           735:
        !           736: ngIRCd 0.12.1 (2008-07-09)
        !           737:
        !           738:   - Add option aliases -V (for --version) and -h (for --help).
        !           739:   - Make Listen parameter a comma-separated list of addresses. This also
        !           740:     obsoletes ListenIPv4 and ListenIPv6 options. If Listen is unset, it
        !           741:     is treated as Listen="::,0.0.0.0".
        !           742:     Note: ListenIPv4 and ListenIPv6 options are still recognized,
        !           743:     but ngircd will print a warning if they are used in the config file.
        !           744:
        !           745: ngIRCd 0.12.0 (2008-05-13)
        !           746:
        !           747:   ngIRCd 0.12.0-pre2 (2008-04-29)
        !           748:   - IPv6: Add config options to disable ipv4/ipv6 support.
        !           749:
        !           750:   ngIRCd 0.12.0-pre1 (2008-04-20)
        !           751:   - Add IPv6 support.
        !           752:   - Install a LaunchDaemon script to start/stop ngIRCd on Mac OS X.
        !           753:   - Implemented IRC commands INFO, SUMMON (dummy), and USERS (dummy) and
        !           754:     enhanced test suite to check these commands. (Dana Dahlstrom)
        !           755:   - IRC_WHO now supports search patterns and will test this against user
        !           756:     nickname/server name/host name, etc. as required by RFC 2812, Section 3.6.1.
        !           757:     (reported by Dana Dahlstrom)
        !           758:   - Implement RFC 2812 handling of "0" argument to 'JOIN': must be treated
        !           759:     as if the user had sent PART commands for all channels the user is a
        !           760:     member of. (Dana Dahlstrom)
        !           761:   - Allow NOTICEs to be sent to a channel. (Fabian Schlager)
        !           762:
        !           763: ngIRCd 0.11.0 (2008-01-15)
        !           764:
        !           765:   - Add support for /STAT u (server uptime) command.
        !           766:   - New [Server] configuration Option "Bind" allows to specify
        !           767:     the source IP address to use when connecting to remote server.
        !           768:   - New configuration option "MaxNickLength" to specify the allowed maximum
        !           769:     length of user nicknames. Note: must be unique in an IRC network!
        !           770:   - Numeric 317: implemented "signon time" (displayed in WHOIS result).
        !           771:   - Added new server configuration option "Passive" for "Server" blocks to
        !           772:     disable automatic outgoing connections (similar to -p option to ngircd,
        !           773:     but only for the specified server). (Tassilo Schweyer)
        !           774:   - Added support for the WALLOPS command. Usage is restricted to IRC
        !           775:     operators.
        !           776:
        !           777: ngIRCd 0.10.2 (2007-06-08)
        !           778:
        !           779:   - Predefined channel configuration now allows specification of channel key
        !           780:     (mode k) and maximum user count (mode l): variables "Key" and "MaxUsers".
        !           781:   - When using the epoll() IO interface, compile in the select() interface as
        !           782:     well and fall back to it when epoll() isn't available on runtime.
        !           783:   - Added support for IO APIs "poll()" and "/dev/poll".
        !           784:
        !           785: ngIRCd 0.10.1 (2006-12-17)
        !           786:
        !           787:   - Allow PASS syntax defined in RFC 1459 for server links, too.
        !           788:   - New configuration option "PredefChannelsOnly": if set, clients can only
        !           789:     join predefined channels.
        !           790:
        !           791: ngIRCd 0.10.0 (2006-10-01)
        !           792:
        !           793:   ngIRCd 0.10.0-pre1 (2006-08-02)
        !           794:   - Enhanced DIE to accept a single parameter ("comment text") which is sent
        !           795:     to all locally connected clients before the server goes down.
        !           796:   - JOIN now supports more than one channel key at a time.
        !           797:   - Implemented numeric "333": Time and user name who set a channel topic.
        !           798:   - Channel topics are no longer limited to 127 characters: now the only limit
        !           799:     is the maximum length of an IRC command, i. e. 512 bytes (in practice, this
        !           800:     limits the topic to about 490 characters due to protocol overhead).
        !           801:   - Reverse DNS lookup code now checks the result by doing an additional
        !           802:     lookup to prevent spoofing.
        !           803:   - Added new IO layer which (optionally) supports epoll() and kqueue() in
        !           804:     addition to the select() interface.
        !           805:
        !           806: ngIRCd 0.9.0 (2005-07-24)
        !           807:
        !           808:   - Never run with root privileges but always switch the user ID.
        !           809:   - Make "netsplit" messages RFC compliant.
        !           810:   - Implemented the IRC function "WHOWAS".
        !           811:   - New configuration option "OperServerMode" to enable a workaround needed
        !           812:     when running an network with ircd2 servers and "OperCanUseMode" enabled
        !           813:     to prevent the ircd2 daemon to drop mode changes of IRC operators.
        !           814:     Patch by Florian Westphal, <westphal@foo.fh-furtwangen.de>.
        !           815:   - Implemented support for "secret channels" (channel mode "s").
        !           816:   - New configuration option "Mask" for [Operator] sections to limit OPER
        !           817:     commands to users with a specific IRC mask. Patch from Florian Westphal.
        !           818:   - New configuration variable "PidFile", section "[Global]": if defined,
        !           819:     the server writes its process ID (PID) to this file. Default: off.
        !           820:     Idea of Florian Westphal, <westphal@foo.fh-furtwangen.de>.
        !           821:   - Added support for the Howl (http://www.porchdogsoft.com/products/howl/)
        !           822:     Rendezvous API, in addition to the API of Apple (Mac OS X). The available
        !           823:     API will be autodetected when you call "./configure --with-rendezvous".
        !           824:
        !           825: ngIRCd 0.8.0 (2004-06-26)
        !           826:
        !           827:   - Two new configuration options: "ChrootDir" and "MotdPhrase", thanks to
        !           828:     Benjamin Pineau <ben@zouh.org>. Now you can force the daemon to change
        !           829:     its root and working directory to something "safe". MotdPhrase is used
        !           830:     to define an "MOTD string" instead of a whole file, useful if the
        !           831:     "real" MOTD file would be outside the "jail".
        !           832:   - INVITE- and BAN-lists become synchronized between IRC+ servers when
        !           833:     establishing new connections, if the peer supports this as well.
        !           834:   - The type of service (TOS) of all sockets is set to "interactive" now.
        !           835:   - Added short command line option "-t" as alternative to "--configtest".
        !           836:   - Added optional support for "IDENT" lookups on incoming connections. You
        !           837:     have to enable this function with the ./configure switch "--with-ident".
        !           838:     The default is not to do IDENT lookups.
        !           839:
        !           840: ngIRCd 0.7.5 (2003-07-11)
        !           841:
        !           842:   - New configuration variable "MaxConnectionsIP" to limit the number of
        !           843:     simultaneous connections from a single IP that the server will accept.
        !           844:     This configuration options lowers the risk of denial of service attacks
        !           845:     (DoS), the default is 5 connections per client IP.
        !           846:   - Added new configuration variable "Listen" to bind all listening
        !           847:     sockets of the server to a single IP address.
        !           848:
        !           849: ngIRCd 0.7.1 (2003-07-18)
        !           850:
        !           851:   - Added support for GNU/Hurd.
        !           852:
        !           853: ngIRCd 0.7.0 (2003-05-01)
        !           854:
        !           855:   - New command CONNECT to enable and add server links. The syntax is not
        !           856:     RFC-compatible: use "CONNECT <name> <port>" to enable and connect an
        !           857:     configured server and "CONNECT <name> <port> <host> <mypwd> <peerpwd>"
        !           858:     to add a new server (ngIRCd tries to connect new servers only once!).
        !           859:   - Added DISCONNECT command ("DISCONNECT <name>") to disable servers.
        !           860:   - New command TRACE (you can trace only servers at the moment).
        !           861:   - New command HELP that lists all understood commands.
        !           862:   - ngIRCd can register itself with Rendezvous: to enable support pass the
        !           863:     new switch "--with-rendezvous" to configure.
        !           864:   - Added support for TCP Wrappers library: pass "--with-tcp-wrappers" to
        !           865:     configure to enable it.
        !           866:   - Changed some configure options to use "--with"/"--without" as prefix
        !           867:     instead of "--enable"/"--disable": "--without-syslog", "--without-zlib",
        !           868:     "--with-tcp-wrappers", and "--with-rendezvous".
        !           869:   - Enhanced manual pages ngircd(8) and ngircd.conf(5).
        !           870:   - Documentation is now installed in $(datadir)/doc/ngircd.
        !           871:
        !           872:
        !           873: Older news (sorry, only available in German language):
        !           874:
        !           875: ngIRCd 0.6.0, 24.12.2002
        !           876:
        !           877:   - beim Schliessen einer Verbindung zeigt der Server nun vor dem ERROR
        !           878:     noch eine Statistik ueber die empfangene und gesendete Datenmenge an.
        !           879:   - Connection-Strukturen werden nun "pool-weise" verwaltet; der Pool wird
        !           880:     bei Bedarf bis zu einem konfigurierten Limit vergroessert.
        !           881:   - Mit der neuen Konfigurationsvariable "MaxConnections" (Sekion "Global")
        !           882:     kann die maximale Anzahl gleichzeitiger Verbindungen begrenzt werden.
        !           883:     Der Default ist -1, "unlimitiert".
        !           884:   - der Server erkennt nun, ob bereits eine eingehende Verbindung von einem
        !           885:     Peer-Server besteht und versucht dann nicht mehr, selber eine eigene
        !           886:     ausgehende Verbindung zu diesem auufzubauen. Dadurch kann nun auf beiden
        !           887:     Servern in der Konfiguration ein Port fuer den Connect konfiguriert
        !           888:     werden (beide Server versuchen sich dann gegenseitig zu connectieren).
        !           889:   - Server identifizieren sich nun mit asynchronen Passwoertern, d.h. das
        !           890:     Passwort, welches A an B schickt, kann ein anderes sein als das, welches
        !           891:     B als Antwort an A sendet. In der Konfig.-Datei, Abschnitt "Server",
        !           892:     wurde "Password" dazu durch "MyPassword" und "PeerPassword" ersetzt.
        !           893:   - Der Server kann nun zur Laufzeit die Konfiguration neu einlesen: dies
        !           894:     macht er nach dem Befehl REHASH oder wenn ein HUP-Signal empfangen wird.
        !           895:   - Server-Server-Links koennen nun komprimiert werden, dazu wird die zlib
        !           896:     (www.zlib.org) benoetigt. Unterstuetzt die Gegenseite die Komprimierung
        !           897:     nicht, wird automatisch unkomprimiert kommuniziert. Das Verfahren ist
        !           898:     kompatibel mit dem Original-ircd 2.10.3, d.h. beide Server koennen
        !           899:     miteinander ueber komprimiert Links kommunizieren.
        !           900:   - neue Konfigurations-Variable "MaxJoins": Hiermit kann die maximale Zahl
        !           901:     der Channels, in denen ein User Mitglied sein kann, begrent werden.
        !           902:   - neue Channel-Modes l (User-Limit) und k (Channel-Key) implementiert.
        !           903:
        !           904: ngIRCd 0.5.0, 20.09.2002
        !           905:
        !           906:   - AIX (3.2.5), HP-UX (10.20), IRIX (6.5), NetBSD (1.5.3/m68k) und Solaris
        !           907:     (2.5.1, 2.6) gehoeren nun auch zu den unterstuetzten Platformen.
        !           908:   - Unter A/UX (und evtl. weiteren Systemen) kompiliert der ngIRCd nun mit
        !           909:     dem "nativen" (ggf. pre-ANSI) Compiler.
        !           910:   - "persistente Channels" (Mode 'P') implementiert: diese koennen in der
        !           911:     Konfigurationsdatei definiert werden (Sektion "Channel", vgl. Beispiel-
        !           912:     Konfiguration "sample-ngircd.conf") und bleiben auch dann bestehen,
        !           913:     wenn kein User mehr im Channel ist.
        !           914:   - neue IRC-Befehle: KICK, INVITE, ADMIN, CHANINFO; LIST wurde erweitert.
        !           915:     Mit dem neuen Befehl CHANINFO synchronisieren Server, die das IRC+-
        !           916:     Protokoll unterstuetzen, Channel-Modes und Topics. Fuer den ADMIN-Befehl
        !           917:     gibt es neue Konfigurationsoptionen (Sektion "Global"): "AdminInfo1",
        !           918:     "AdminInfo2" und "AdminEMail".
        !           919:   - Invite- und Ban-Lists implementiert.
        !           920:   - neue Konfigurationsoption "OperCanUseMode" (Sektion "Global"):
        !           921:     ist sie aktiv, koennen IRC-Operatoren immer Channel-Modes setzen.
        !           922:   - "Test-Suite" begonnen: mit "make check" wird sie durchlaufen.
        !           923:
        !           924: ngIRCd 0.4.2, 29.04.2002
        !           925:
        !           926:   - IRC-Funktion LIST implementiert; bisher werden allerdings noch keine
        !           927:     Regular Expressions (bis auf "*") unterstuetzt.
        !           928:
        !           929: ngIRCd 0.4.0, 01.04.2002
        !           930:
        !           931:   - WHO implementiert (bisher ohne komplette Unterstuetzung von Masks).
        !           932:   - stderr wird nun in eine Datei umgelenkt (/ngircd-<PID>.err).
        !           933:     Laeuft der Server nicht im Debug-Modus, so wird diese bei Programm-
        !           934:     ende geloescht. Sollte der Server abstuerzen, finden sich hier evtl.
        !           935:     zusaetzliche Informationen.
        !           936:   - Server-Gruppen implementiert: es wird immer nur zu einem Server in
        !           937:     einer Gruppe eine Verbindung aufgebaut, klappt es beim ersten Server
        !           938:     nicht, so wird der naechste probiert.
        !           939:   - Clients und Channels werden nicht mehr ueber ihren Namen, sondern
        !           940:     einen Hash-Wert gesucht: sollte deutlich schneller sein.
        !           941:   - neuer Kommandozeilen-Parameter "--configtest": die Konfiguration wird
        !           942:     gelesen und die dann verwendeten Werte angezeigt.
        !           943:   - Client-Mode "s" (Server Notices) implementiert.
        !           944:   - mit dem neuen Kommandozeilen-Parameter "--config"/"-f" kann eine
        !           945:     alternative Konfigurationsdatei angegeben werden.
        !           946:   - nach dem Start kann der ngIRCd, wenn er mit root-Rechten laeuft,
        !           947:     zu einer anderen User-ID und Group-ID wechseln.
        !           948:
        !           949: ngIRCd 0.3.0, 02.03.2002
        !           950:
        !           951:   - bekommt der Server ein HUP-Signal, so startet er neu -- genau so, wie
        !           952:     er auf den IRC-Befehl RESTART reagiert.
        !           953:   - neuer Kommandozeilen-Schalter "--passive" (-p): wird er angegeben, so
        !           954:     verbindet sich der ngIRCd nicht mehr automatisch zu anderen Servern.
        !           955:     Zum Debuggen manchmal ganz praktisch :-)
        !           956:   - neue Befehle VERSION und KILL implementiert. NAMES korrigiert.
        !           957:   - Anpassungen an A/UX: gehoert nun auch zu den unterstuetzten Platformen.
        !           958:   - AWAY (und der User-Mode 'a') ist nun implementiert.
        !           959:   - der ngIRCd unterstuetzt nun Channel-Topics (TOPIC-Befehl).
        !           960:   - Channel- und Nicknames werden nun ordentlich validiert.
        !           961:
        !           962: ngIRCd 0.2.0, 15.02.2002
        !           963:
        !           964:   - Begonnen Channel-Modes und User-Channel-Modes zu implementieren: der
        !           965:     Server versteht an User-Modes o und v, beachtet letzteres allerdings
        !           966:     noch nirgends. Bekannte (aber nicht beachtete!) Channel-Modes sind
        !           967:     bisher a, m, n, p, q, s und t. Diese Modes werden von Usern ange-
        !           968:     nommen, von anderen Servern werden auch unbekannte Modes uebernommen.
        !           969:   - Nach dem Connect eines Users werden LUSERS-Informationen angezeigt.
        !           970:
        !           971: ngIRCd 0.1.0, 29.01.2002
        !           972:
        !           973:   - Channels implementiert, bisher jedoch noch ohne Channel-Modes, d.h.
        !           974:     es gibt keine Channel-Ops, kein Topic, kein "topic lock" etc. pp.
        !           975:     Chatten in Channels ist aber natuerlich moeglich ;-)
        !           976:     Dadurch zum Teil groessere Aenderungen an bisherigen Funktionen.
        !           977:   - neue Befehle fuer Channles: JOIN, PART und NJOIN.
        !           978:   - FAQ.txt in doc/ begonnen.
        !           979:
        !           980: ngIRCd 0.0.3, 16.01.2002
        !           981:
        !           982:   - Server-Links vollstaendig implementiert: der ngIRCd kann nun auch
        !           983:     "Sub-Server" haben, also sowohl als Leaf-Node als auch Hub in einem
        !           984:     IRC-Netzwerk arbeiten.
        !           985:   - WHOIS wird nun immer an den "Original-Server" weitergeleitet.
        !           986:   - Parser handhabt Leerzeichen zw. Parametern nun etwas "lockerer".
        !           987:   - Kommandozeilen-Parser: Debug- und No-Daemon-Modus, Hilfe.
        !           988:   - ngIRCd wandelt sich nun in einen Daemon (Hintergrundprozess) um.
        !           989:   - neue Befehle: LUSERS, LINKS.
        !           990:
        !           991: ngIRCd 0.0.2, 06.01.2002
        !           992:
        !           993:   - neuer Aufbau der Konfigurationsdatei,
        !           994:   - mehrere IRC-Operatoren koennen konfiguriert werden,
        !           995:   - Server-Links teilweise implementiert. Bisher kann der ngIRCd jedoch
        !           996:     nur "leafed server" sein, d.h. keine "Client-Server" haben.
        !           997:
        !           998: ngIRCd 0.0.1, 31.12.2001
        !           999:
        !          1000:   - erste oeffentliche Version von ngIRCd als "public preview" :-)

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