app/irc: rewrite README

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Henrik Lissner 2019-01-05 16:30:00 -05:00
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#+TITLE: :app irc #+TITLE: app/irc
#+DATE: June 11, 2017
This module turns adds an IRC client to Emacs ([[https://github.com/jorgenschaefer/circe][~circe~)]] with native notifications ([[https://github.com/eqyiel/circe-notifications][circe-notifications]]). #+SINCE: v2.0.3
#+STARTUP: inlineimages
* Table of Contents :TOC: * Table of Contents :TOC:
- [[Description][Description]]
- [[Module Flags][Module Flags]]
- [[Plugins][Plugins]]
- [[Dependencies][Dependencies]] - [[Dependencies][Dependencies]]
- [[Configure][Configure]] - [[Prerequisites][Prerequisites]]
- [[Features][Features]]
- [[An IRC Client in Emacs][An IRC Client in Emacs]]
- [[Configuration][Configuration]]
- [[Pass: the unix password manager][Pass: the unix password manager]] - [[Pass: the unix password manager][Pass: the unix password manager]]
- [[Emacs' auth-source API][Emacs' auth-source API]] - [[Emacs' auth-source API][Emacs' auth-source API]]
- [[Appendix][Appendix]] - [[Troubleshooting][Troubleshooting]]
- [[Commands][Commands]]
* Description
This module turns adds an IRC client to Emacs with OS notifications.
** Module Flags
This module provides no flags.
** Plugins
+ [[https://github.com/jorgenschaefer/circe][circe]]
+ [[https://github.com/eqyiel/circe-notifications][circe-notifications]]
* Dependencies * Dependencies
This module has no dependencies, besides =gnutls-cli= or =openssl= for secure connections. This module requires =gnutls-cli= or =openssl= for secure connections.
* Configure * Prerequisites
Use the ~:irc~ setting to configure IRC servers. Its second argument (a plist) takes the same arguments as ~circe-network-options~. This module has no direct prerequisites.
#+BEGIN_SRC emacs-lisp :tangle no
(set! :irc "chat.freenode.net"
`(:tls t
:nick "doom"
:sasl-username "myusername"
:sasl-password "mypassword"
:channels ("#emacs")))
#+END_SRC
*It is a obviously a bad idea to store auth-details in plaintext,* so here are some ways to avoid that:
** Pass: the unix password manager
[[https://www.passwordstore.org/][Pass]] is my tool of choice. I use it to manage my passwords. If you activate the [[/modules/tools/password-store/README.org][:tools password-store]] module you get an elisp API through which to access your password store.
~:irc~'s plist can use functions instead of strings. ~+pass-get-user~ and ~+pass-get-secret~ can help here:
#+BEGIN_SRC emacs-lisp :tangle no
(set! :irc "chat.freenode.net"
`(:tls t
:nick "doom"
:sasl-username ,(+pass-get-user "irc/freenode.net")
:sasl-password ,(+pass-get-secret "irc/freenode.net")
:channels ("#emacs")))
#+END_SRC
But wait, there's more! This stores your password in a public variable which could be accessed or appear in backtraces. Not good! So we go a step further:
#+BEGIN_SRC emacs-lisp :tangle no
(set! :irc "chat.freenode.net"
`(:tls t
:nick "doom"
:sasl-username ,(+pass-get-user "irc/freenode.net")
:sasl-password (lambda (&rest _) (+pass-get-secret "irc/freenode.net"))
:channels ("#emacs")))
#+END_SRC
And you're good to go!
Note that =+pass-get-user= tries to find your username by looking for the fields
listed in =+pass-user-fields= (by default =login=, =user==, =username== and =email=)=).
An example configuration looks like
#+BEGIN_SRC txt :tangle no
mysecretpassword
username: myusername
#+END_SRC
** Emacs' auth-source API
~auth-source~ is built into Emacs. As suggested [[https://github.com/jorgenschaefer/circe/wiki/Configuration#safer-password-management][in the circe wiki]], you can store (and retrieve) encrypted passwords with it.
#+BEGIN_SRC emacs-lisp :tangle no
(setq auth-sources '("~/.authinfo.gpg"))
(defun my-fetch-password (&rest params)
(require 'auth-source)
(let ((match (car (apply #'auth-source-search params))))
(if match
(let ((secret (plist-get match :secret)))
(if (functionp secret)
(funcall secret)
secret))
(error "Password not found for %S" params))))
(defun my-nickserv-password (server)
(my-fetch-password :user "forcer" :host "irc.freenode.net"))
(set! :irc "chat.freenode.net"
'(:tls t
:nick "doom"
:sasl-password my-nickserver-password
:channels ("#emacs")))
#+END_SRC
* Appendix
** Commands
* Features
** An IRC Client in Emacs
To connect to IRC you can invoke the ~=irc~ function using =M-x= or your own To connect to IRC you can invoke the ~=irc~ function using =M-x= or your own
custom keybinding. custom keybinding.
@ -110,3 +52,88 @@ When in a circe buffer these keybindings will be available.
| ~circe-command-PART~ | =SPC m p= | Part the current channel | | ~circe-command-PART~ | =SPC m p= | Part the current channel |
| ~+irc/quit~ | =SPC m Q= | Kill the current circe session and workgroup | | ~+irc/quit~ | =SPC m Q= | Kill the current circe session and workgroup |
| ~circe-reconnect~ | =SPC m R= | Reconnect the current server | | ~circe-reconnect~ | =SPC m R= | Reconnect the current server |
* Configuration
Use ~set-irc-server!~ to configure IRC servers. Its second argument (a plist)
takes the same arguments as ~circe-network-options~.
#+BEGIN_SRC emacs-lisp :tangle no
(set-irc-server! "chat.freenode.net"
`(:tls t
:nick "doom"
:sasl-username "myusername"
:sasl-password "mypassword"
:channels ("#emacs")))
#+END_SRC
*It is a obviously a bad idea to store auth-details in plaintext,* so here are
some ways to avoid that:
** Pass: the unix password manager
[[https://www.passwordstore.org/][Pass]] is my tool of choice. I use it to manage my passwords. If you activate the
[[../../../modules/tools/password-store/README.org][:tools password-store]] module you get an elisp API through which to access your
password store.
~set-irc-server!~ accepts a plist can use functions instead of strings.
~+pass-get-user~ and ~+pass-get-secret~ can help here:
#+BEGIN_SRC emacs-lisp :tangle no
(set-irc-server! "chat.freenode.net"
`(:tls t
:nick "doom"
:sasl-username ,(+pass-get-user "irc/freenode.net")
:sasl-password ,(+pass-get-secret "irc/freenode.net")
:channels ("#emacs")))
#+END_SRC
But wait, there's more! This stores your password in a public variable which
could be accessed or appear in backtraces. Not good! So we go a step further:
#+BEGIN_SRC emacs-lisp :tangle no
(set-irc-server! "chat.freenode.net"
`(:tls t
:nick "doom"
:sasl-username ,(+pass-get-user "irc/freenode.net")
:sasl-password (lambda (&rest _) (+pass-get-secret "irc/freenode.net"))
:channels ("#emacs")))
#+END_SRC
And you're good to go!
Note that =+pass-get-user= tries to find your username by looking for the fields
listed in =+pass-user-fields= (by default =login=, =user==, =username== and
=email=)=). An example configuration looks like
#+BEGIN_SRC txt :tangle no
mysecretpassword
username: myusername
#+END_SRC
** Emacs' auth-source API
~auth-source~ is built into Emacs. As suggested [[https://github.com/jorgenschaefer/circe/wiki/Configuration#safer-password-management][in the circe wiki]], you can store
(and retrieve) encrypted passwords with it.
#+BEGIN_SRC emacs-lisp :tangle no
(setq auth-sources '("~/.authinfo.gpg"))
(defun my-fetch-password (&rest params)
(require 'auth-source)
(let ((match (car (apply #'auth-source-search params))))
(if match
(let ((secret (plist-get match :secret)))
(if (functionp secret)
(funcall secret)
secret))
(error "Password not found for %S" params))))
(defun my-nickserv-password (server)
(my-fetch-password :user "forcer" :host "irc.freenode.net"))
(set-irc-server! "chat.freenode.net"
'(:tls t
:nick "doom"
:sasl-password my-nickserver-password
:channels ("#emacs")))
#+END_SRC
* TODO Troubleshooting