ergo/CHANGELOG.md

# Changelog
All notable changes to Oragono will be documented in this file.

This project adheres to [Semantic Versioning](http://semver.org/). For the purposes of versioning, we consider the "public API" to refer to the configuration files, CLI interface and database format.


## Unreleased
New release of Oragono!
 
### Config Changes
* `channels` section added to control channel registration.
* `logging` key under `server` removed, replaced with `logging` section.
* `registration` and `authentication-enabled` keys moved under `accounts` section.
* `sts` section added under `server`.

### Security
 
### Added
* Added `ChanServ` service, to allow channel registration.
* Added `USERHOST` command (thanks @vegax87).
* Added draft IRCv3 capability [draft/sts](http://ircv3.net/specs/core/sts-3.3.html).
 
### Changed
* `DLINE` and `KLINE` now let you specify years, months and days (e.g. `1y12m30d`) in durations.
* Logging is now much more useful, displays colours and can log to disk.
* Socket handling has been rewritten, which means we should support more connections more effectively (thanks dp- for the suggestion!).

### Removed
 
### Fixed
* Fixed an account issue where clients could login to multiple accounts at once.
* Fixed issues that prevented rehashing after the first rehash had gone through successfully.
* Fixed the inability to view channel ban, ban exception, and invite exception lists.


## [0.6.0] - 2017-01-19
We've added a ton of new features in this release! Automated connection throttling, the ability to `KLINE`, updated casemapping and line-length specifications.

I've also started including a new section in the changelog called **Config Changes**, which should help you find what you need to update across releases.

### Config Changes
* `enabled` key added under the `connection-limits` section.
* `connection-throttling` section added under `server`.
* `linelen` section added under `limits`.

### Added
* Added ARM build (for Raspberry PIs and similar).
* Added automated connection throttling! See the new `connection-throttling` section in the config.
* Added `KLINE` and `UNKLINE` commands. Complementing `DLINE`'s per-IP and per-network bans, this lets you ban masks from the server.
* Added `LUSERS` command (thanks @vegax87).
* Added draft IRCv3 capabilities [`draft/message-tags-0.2`](http://ircv3.net/specs/core/message-tags-3.3.html) and [`draft/message-ids`](http://ircv3.net/specs/extensions/message-ids.html).
* Added proposed IRCv3 capability [`draft/maxline`](https://github.com/ircv3/ircv3-specifications/pull/281).

### Changed
* Changed casemapping from "rfc7700" to "rfc7613", to match new draft spec.
* Connection limits can now be freely enabled or disabled. If updating, check the new `enabled` flag under the `connection-limits` section of the config.

### Fixed
* Fixed an issue where `UNDLINE` didn't save across server launches.
* Removed several race conditions which could result in server panics.
* WHOIS: Multiple channels now appear in a single reply (thanks @vegax87).


## [0.5.0] - 2016-12-10
This release includes a ton of fixes, as well as the ability to ban IP addresses from your network with the `DLINE` command!

As well, there are some major fixes with the libraries Oragono depends on, which fix various DoS attacks, crashes and timeouts. In short, this release is more stable and fixes a bunch of issues.

This release also updates the database, so be sure to run the `oragono upgradedb` command.

### Added
* Added ability to ban IP addresses and networks from the server with the `DLINE` and `UNDLINE` commands.
* Added alpha REST API (intended primarily for use with a future web interface to manage accounts, DLINEs, etc).

### Changed
* Database upgraded to make handling accounts simpler.
* Only give chanop (`@`) on channel join, not channel founder (`~`). We'll do channel founder and all on registered chans only.

### Fixed
* Fixed a bunch of bugs around setting nicknames on join.
* Fixed crash when using STATUSMSG-like messaging.
* Fixed crash with gIRC-Go ircmsg library we depend on.
* Fixed not sending `MODE` changes to all clients in a channel.
* Fixed timeout issue with go-ident library we depend on (which caused hangs on connection).
* Prevented a DoS related to lots of clients connecting at once.
* Removed races around setting and changing `NICK`s, to be more safe.
* Send channel `NOTICE`s properly.


## [0.4.0] - 2016-11-03
This release packs a more extensive oper privelege framework, bugfixes for capabilities/modes, support for new RP commands and more `RPL_ISUPPORT` tokens. In general, a bunch of new features and bugfixes to make using Oragono more smooth.

### Added
* Added automatic client connection limiting, similar to other IRCds.
* Added operator classes, allowing for more finely-grained permissions for operators.
* Added roleplaying commands, both inside channels and between clients.
* Length of channel mode lists (ban / ban-except / invite-except) is now restricted to the limit in config.
* Support `MAXLIST`, `MAXTARGETS`, `MODES`, `TARGMAX` in `RPL_ISUPPORT`.
* Added support for IRCv3 capability [`chghost`](http://ircv3.net/specs/extensions/chghost-3.2.html).

### Changed
* In the config file, "operator" changed to "opers", and new oper class is required.

### Fixed
* Fixed being able to change modes when not an operator.
* Fixed bug where `HELP` wouldn't correctly display for operators, and added more help topics.
* Fixed bug where you would always have certain capabilities enabled.
* Fixed display of large `MONITOR` lists.


## [0.3.0] - 2016-10-23
We now support dynamically reloading the config file, along with some new IRCv3 capabilities and some fixes.

The `REHASH` changes are fairly extensive here, but should now be stable (this also fixes a denial of service possible with the old code).

### Security
* Prevent a denial of service where the server would stop accepting connections.

### Added
* Added `REHASH` command.
* Added ability to message channel members with a specific privelege (i.e. support for `STATUSMSG`).
* Added ability to enable and disable SASL.
* Added support for IRCv3 capabilities [`cap-notify`](http://ircv3.net/specs/extensions/cap-notify-3.2.html) and [`echo-message`](http://ircv3.net/specs/extensions/echo-message-3.2.html).

### Changed
* Server operators no longer have permissions to do everything in channels.

### Fixed
* MODE: Fixed issue where channel privelege changes returned incorrectly.


## [0.2.0] - 2016-10-16
Improved compatibility, more features.

Now comes with a new proper Unicode-capable casemapping and integrated help!

### Added
* Added integrated help (with the `/HELP` command).
* Added support for IRCv3.2 [capability negotiation](http://ircv3.net/specs/core/capability-negotiation-3.2.html) including CAP values.
* Added support for IRCv3 capabilities [`account-notify`](http://ircv3.net/specs/extensions/account-notify-3.1.html), [`invite-notify`](http://ircv3.net/specs/extensions/invite-notify-3.2.html), [`monitor`](http://ircv3.net/specs/core/monitor-3.2.html), [`sasl`](http://ircv3.net/specs/extensions/sasl-3.2.html), and draft capability [`message-tags`](http://ircv3.net/specs/core/message-tags-3.3.html) as `draft/message-tags`.

### Changed
* Casemapping changed from custom unicode mapping to preliminary [rfc7700](https://github.com/ircv3/ircv3-specifications/pull/272) mapping.

### Removed
* Removed channel persistence with the `+P` mode (not too useful as currently implemented, to be replaced later).
* Removed the `PROXY` command (breaks our TLS user mode, and our integrated support for TLS should be fine).


## [0.1.0] - 2016-09-18
Initial release of Oragono!

### Security
* PROXY command is now restricted appropriately.
* Nicknames, usernames and channel names that break the protocol are no longer allowed.
* Default channel modes set to restrict new channels more appropriately by default.

### Added
* YAML config file format.
* buntdb key-value store for persistent data.
* Native SSL/TLS support (thanks to @edmand).
* Ability to generate testing certificates from the command line.
* Support for looking up usernames with [ident](https://tools.ietf.org/html/rfc1413) on client connection.
* [`RPL_ISUPPORT`](http://modern.ircdocs.horse/#rplisupport-005) numeric as advertised by most other IRCds today.
* Ability to parse complex mode change syntax commonly used these days (i.e. `+h-ov dan dan dan`).
* User mode for clients connected via TLS (`+Z`).
* Ability to register and login to accounts (with passphrase or certfp).
* Added support for IRCv3 capabilities [`account-tag`](http://ircv3.net/specs/extensions/account-tag-3.2.html), [`away-notify`](http://ircv3.net/specs/extensions/away-notify-3.1.html), [`extended-join`](http://ircv3.net/specs/extensions/extended-join-3.1.html), [`sasl`](http://ircv3.net/specs/extensions/sasl-3.1.html), [`server-time`](http://ircv3.net/specs/extensions/server-time-3.2.html), and [`userhost-in-names`](http://ircv3.net/specs/extensions/userhost-in-names-3.2.html).

### Changed
* Channel creator (`O`) privilege changed to founder/admin/halfops (`qah`) privileges.
* Private (`+p`) channel mode changed to secret (`+s`), to match what's used by servers today.
* Default channel modes changed to (`+nt`), matching most other IRCds.
* CLI commands and arguments made more consistent with typical software.
* Usernames set by the `USER` command now start with `"~"` (to work with new ident support).
* Renamed `ONICK` command to `SANICK` to be more consistent with other IRCds.
* Made maximum nickname and channel name lengths configurable.
* Made maximum `WHOWAS` entries configurable.

### Removed
* Removed gitconfig configuration format [replaced with YAML].
* Removed sqlite database [replaced with buntdb key-value store].
* Removed `THEATER` command (it broke and I'm not that interested in putting the work in to get it working again with the aim of this project. PRs accepted).

### Fixed
* Fixed clients no longer being able to send commands after a single command errored out.
* CAP: Registration is now properly suspended during CAP negotiation.
* CAP: Remove CAP CLEAR (recommended in IRCv3 3.2), and allow capability negotiation after registration.
* MODE: Fixed `<modestring>` evaluation (we were parsing all ungrabbed parameters as a modestring, when it is actually only the first param).
* MODE: New-style mode change syntax (with both adding and removing modes in a single MODE command) is now parsed properly.
* MOTD: Now store MOTD in-memory rather than on-disk, and don't limit it to 80 characters per line (not required with today's servers or clients).
* NICK: Restrict nicknames that break the protocol.
* USER: Restrict usernames that break the protocol.
* PROXY: Restrict to specified hostnames only.
* WHOIS: Include the required `<nick>` param on `RPL_ENDOFWHOIS`.
* WHOIS: Hide hidden channels in WHOIS responses.