Update NEWS, bump version

We were in plain conflict with RFC 2812 for no apparent reason.

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "liberty"]
 	path = liberty
-	url = git://github.com/pjanouch/liberty.git
+	url = https://git.janouch.name/p/liberty.git

.travis.yml

@@ -1,39 +0,0 @@
-language: c
-notifications:
- irc:
-  channels: "anathema.irc.so#anathema"
-  use_notice: true
-  skip_join: true
-env:
- global:
-  - secure: "ck6keK5tTbVCN7VGyKglS890hjovUNt2zyOydiyFtQDciaB/rvEwkKy4anMCEdZHFpGAPE9iBmNYaGUsD1Y+KifhhImVMbuThe2D8MLv5crSLRheYPbbmhO8MWPAxmQnuQhpwsUKZlHvUfX8nh+d0juNdqXklvhVml78Gi99QFw="
- matrix:
-  - readline=ON libedit=OFF
-  - readline=OFF libedit=ON
-addons:
- coverity_scan:
-  project:
-   name: "pjanouch/uirc3"
-   description: "Experimental IRC client, daemon and bot"
-  notification_email: p.janouch@gmail.com
-  build_command_prepend: "cmake .. -DCMAKE_BUILD_TYPE=Release"
-  build_command: "make"
-  branch_pattern: coverity_scan
-compiler:
- - clang
- - gcc
-before_install:
- # We need this PPA for a recent version of libedit
- - sudo add-apt-repository ppa:ondrej/php5-5.6 -y
- - sudo apt-get update -qq
-install:
- - sudo apt-get install -y help2man libedit-dev expect
-before_script:
- - mkdir build
- - cd build
-script:
- - cmake .. -DCMAKE_INSTALL_PREFIX=/usr
-   -DWANT_READLINE=$readline -DWANT_LIBEDIT=$libedit
- - make
- - cpack -G DEB
- - ../test

CMakeLists.txt

@@ -1,58 +1,108 @@
 project (uirc3 C)
-cmake_minimum_required (VERSION 2.8.5)
+cmake_minimum_required (VERSION 2.8.11)
 
 # Options
 option (WANT_READLINE "Use GNU Readline for the UI (better)" ON)
 option (WANT_LIBEDIT "Use BSD libedit for the UI" OFF)
 
 # Moar warnings
-if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)
+if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)
 	# -Wunused-function is pretty annoying here, as everything is static
-	set (CMAKE_C_FLAGS "-std=c99 -Wall -Wextra -Wno-unused-function")
-endif ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUC)
+	set (wdisabled "-Wno-unused-function")
+	set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -Wall -Wextra ${wdisabled}")
+endif ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)
 
 # Version
-set (project_VERSION_MAJOR "0")
-set (project_VERSION_MINOR "9")
-set (project_VERSION_PATCH "1")
+set (project_version "0.9.7")
 
-set (project_VERSION "${project_VERSION_MAJOR}")
-set (project_VERSION "${project_VERSION}.${project_VERSION_MINOR}")
-set (project_VERSION "${project_VERSION}.${project_VERSION_PATCH}")
+# Try to append commit ID if it follows a version tag.  It might be nicer if
+# we could also detect dirty worktrees but that's very hard to get right.
+find_package (Git)
+set (git_head "${PROJECT_SOURCE_DIR}/.git/HEAD")
+if (GIT_FOUND AND EXISTS "${git_head}")
+	configure_file ("${git_head}" git-head.tag COPYONLY)
+	file (READ "${git_head}" git_head_content)
+	if (git_head_content MATCHES "^ref: ([^\r\n]+)")
+		set (git_ref "${PROJECT_SOURCE_DIR}/.git/${CMAKE_MATCH_1}")
+		if (EXISTS "${git_ref}")
+			configure_file ("${git_ref}" git-ref.tag COPYONLY)
+		endif (EXISTS "${git_ref}")
+	endif (git_head_content MATCHES "^ref: ([^\r\n]+)")
+
+	execute_process (COMMAND ${GIT_EXECUTABLE} describe --tags --match v*
+		WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+		RESULT_VARIABLE git_describe_result
+		OUTPUT_VARIABLE git_describe OUTPUT_STRIP_TRAILING_WHITESPACE)
+	if (NOT git_describe_result)
+		string (REGEX REPLACE "^v" "" project_version "${git_describe}")
+	endif (NOT git_describe_result)
+endif (GIT_FOUND AND EXISTS "${git_head}")
+
+# Dashes make filenames confusing and upset packaging software
+string (REPLACE "-" "+" project_version_safe "${project_version}")
 
 # Dependencies
-find_package (Curses)
+set (CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/liberty/cmake)
+include (AddThreads)
+
 find_package (PkgConfig REQUIRED)
 pkg_check_modules (libssl REQUIRED libssl libcrypto)
-pkg_check_modules (ncursesw ncursesw)
+list (APPEND project_libraries ${libssl_LIBRARIES})
+include_directories (${libssl_INCLUDE_DIRS})
+link_directories (${libssl_LIBRARY_DIRS})
 
 if ("${CMAKE_SYSTEM_NAME}" MATCHES "BSD")
-	include_directories(/usr/local/include)
-	link_directories(/usr/local/lib)
+	include_directories (/usr/local/include)
+	link_directories (/usr/local/lib)
 	# Need this for SIGWINCH in FreeBSD and OpenBSD respectively;
 	# our POSIX version macros make it undefined
 	add_definitions (-D__BSD_VISIBLE=1 -D_BSD_SOURCE=1)
 endif ("${CMAKE_SYSTEM_NAME}" MATCHES "BSD")
 
-list (APPEND project_libraries ${libssl_LIBRARIES})
-include_directories (${libssl_INCLUDE_DIRS})
-link_directories (${libssl_LIBRARY_DIRS})
-
-# -lpthread is only there for debugging (gdb & errno)
 # -lrt is only for glibc < 2.17
 # -liconv may or may not be a part of libc
-foreach (extra iconv rt pthread)
+foreach (extra iconv rt)
 	find_library (extra_lib_${extra} ${extra})
 	if (extra_lib_${extra})
-		list (APPEND project_libraries ${extra})
+		list (APPEND project_libraries ${extra_lib_${extra}})
 	endif (extra_lib_${extra})
 endforeach (extra)
 
+include (CheckCSourceRuns)
+set (CMAKE_REQUIRED_LIBRARIES ${project_libraries})
+get_property (CMAKE_REQUIRED_INCLUDES
+	DIRECTORY "${PROJECT_SOURCE_DIR}" PROPERTY INCLUDE_DIRECTORIES)
+CHECK_C_SOURCE_RUNS ("#include <iconv.h>
+	int main () { return iconv_open (\"UTF-8//TRANSLIT\", \"ISO-8859-1\")
+		== (iconv_t) -1; }" ICONV_ACCEPTS_TRANSLIT)
+
+# Dependencies for degesch
+pkg_check_modules (libffi REQUIRED libffi)
+list (APPEND degesch_libraries ${libffi_LIBRARIES})
+include_directories (${libffi_INCLUDE_DIRS})
+link_directories (${libffi_LIBRARY_DIRS})
+
+# FIXME: other Lua versions may be acceptable, don't know yet
+pkg_search_module (lua lua53 lua5.3 lua-5.3 lua>=5.3)
+option (WITH_LUA "Enable support for Lua plugins" ${lua_FOUND})
+
+if (WITH_LUA)
+	if (NOT lua_FOUND)
+		message (FATAL_ERROR "Lua library not found")
+	endif (NOT lua_FOUND)
+
+	list (APPEND degesch_libraries ${lua_LIBRARIES})
+	include_directories (${lua_INCLUDE_DIRS})
+	link_directories (${lua_LIBRARY_DIRS})
+endif (WITH_LUA)
+
+find_package (Curses)
+pkg_check_modules (ncursesw ncursesw)
 if (ncursesw_FOUND)
-	list (APPEND project_libraries ${ncursesw_LIBRARIES})
+	list (APPEND degesch_libraries ${ncursesw_LIBRARIES})
 	include_directories (${ncursesw_INCLUDE_DIRS})
 elseif (CURSES_FOUND)
-	list (APPEND project_libraries ${CURSES_LIBRARY})
+	list (APPEND degesch_libraries ${CURSES_LIBRARY})
 	include_directories (${CURSES_INCLUDE_DIR})
 else (CURSES_FOUND)
 	message (SEND_ERROR "Curses not found")
@@ -64,27 +114,24 @@ elseif (WANT_READLINE)
 	# OpenBSD's default readline is too old
 	if ("${CMAKE_SYSTEM_NAME}" MATCHES "OpenBSD")
 		include_directories (/usr/local/include/ereadline)
-		list (APPEND project_libraries ereadline)
+		list (APPEND degesch_libraries ereadline)
 	else ("${CMAKE_SYSTEM_NAME}" MATCHES "OpenBSD")
-		list (APPEND project_libraries readline)
+		list (APPEND degesch_libraries readline)
 	endif ("${CMAKE_SYSTEM_NAME}" MATCHES "OpenBSD")
 elseif (WANT_LIBEDIT)
 	pkg_check_modules (libedit REQUIRED libedit)
-	list (APPEND project_libraries ${libedit_LIBRARIES})
+	list (APPEND degesch_libraries ${libedit_LIBRARIES})
 	include_directories (${libedit_INCLUDE_DIRS})
 endif ((WANT_READLINE AND WANT_LIBEDIT) OR (NOT WANT_READLINE AND NOT WANT_LIBEDIT))
 
 # Generate a configuration file
-if (WANT_READLINE)
-	set (HAVE_READLINE 1)
-endif (WANT_READLINE)
-
-if (WANT_LIBEDIT)
-	set (HAVE_EDITLINE 1)
-endif (WANT_LIBEDIT)
+set (HAVE_READLINE "${WANT_READLINE}")
+set (HAVE_EDITLINE "${WANT_LIBEDIT}")
+set (HAVE_LUA      "${WITH_LUA}")
 
 include (GNUInstallDirs)
-set (plugin_dir ${CMAKE_INSTALL_LIBDIR}/${PROJECT_NAME})
+# ZyklonB is currently an odd duck but degesch follows normal XDG rules
+set (zyklonb_plugin_dir ${CMAKE_INSTALL_LIBDIR}/zyklonb/plugins)
 configure_file (${PROJECT_SOURCE_DIR}/config.h.in ${PROJECT_BINARY_DIR}/config.h)
 include_directories (${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})
 
@@ -103,21 +150,61 @@ set_source_files_properties (${PROJECT_BINARY_DIR}/kike-replies.c
 # Build
 add_executable (zyklonb zyklonb.c ${common_sources} ${common_headers})
 target_link_libraries (zyklonb ${project_libraries})
+add_threads (zyklonb)
 
 add_executable (degesch degesch.c kike-replies.c
 	${common_sources} ${common_headers})
-target_link_libraries (degesch ${project_libraries})
+target_link_libraries (degesch ${project_libraries} ${degesch_libraries})
+add_threads (degesch)
 
 add_executable (kike kike.c kike-replies.c ${common_sources} ${common_headers})
 target_link_libraries (kike ${project_libraries})
+add_threads (kike)
+
+# Tests
+function (make_tests_for target_name)
+	get_target_property (sources   ${target_name} SOURCES)
+	get_target_property (libraries ${target_name} LINK_LIBRARIES)
+	get_target_property (options   ${target_name} COMPILE_OPTIONS)
+
+	set (test test-${target_name})
+	add_executable (${test} ${sources})
+	target_link_libraries (${test} ${libraries})
+	set_target_properties (${test} PROPERTIES
+		COMPILE_DEFINITIONS TESTING
+		COMPILE_OPTIONS "${options}")
+
+	add_test (NAME ${test} COMMAND ${test})
+endfunction (make_tests_for)
+
+include (CTest)
+if (BUILD_TESTING)
+	make_tests_for (degesch)
+	add_test (NAME custom-static-analysis
+		COMMAND ${PROJECT_SOURCE_DIR}/test-static)
+endif (BUILD_TESTING)
+
+# Various clang-based diagnostics, loads of fake positives and spam
+file (GLOB clang_tidy_sources *.c)
+set (clang_tidy_checks misc-* readability-*
+	-readability-braces-around-statements
+	-readability-named-parameter)
+string (REPLACE ";" "," clang_tidy_checks "${clang_tidy_checks}")
+
+set (CMAKE_EXPORT_COMPILE_COMMANDS ON)
+add_custom_target (clang-tidy
+	COMMAND clang-tidy -p ${PROJECT_BINARY_DIR} -checks=${clang_tidy_checks}
+		${clang_tidy_sources} 1>&2
+	USES_TERMINAL
+	WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
 
 # Installation
 install (TARGETS zyklonb degesch kike DESTINATION ${CMAKE_INSTALL_BINDIR})
 install (FILES LICENSE DESTINATION ${CMAKE_INSTALL_DOCDIR})
-
-foreach (plugin coin eval script youtube ${plugins})
-	install (FILES plugins/${plugin} DESTINATION ${plugin_dir})
-endforeach (plugin)
+install (DIRECTORY plugins/zyklonb/
+	DESTINATION ${zyklonb_plugin_dir} USE_SOURCE_PERMISSIONS)
+install (DIRECTORY plugins/degesch/
+	DESTINATION ${CMAKE_INSTALL_DATADIR}/degesch/plugins)
 
 # Generate documentation from program help
 find_program (HELP2MAN_EXECUTABLE help2man)
@@ -138,26 +225,26 @@ endforeach (page)
 add_custom_target (docs ALL DEPENDS ${project_MAN_PAGES})
 
 foreach (page ${project_MAN_PAGES})
-	string (REGEX MATCH "\\.([0-9])" manpage_suffix "${page}")
+	string (REGEX MATCH "\\.([0-9])$" manpage_suffix "${page}")
 	install (FILES "${page}"
 		DESTINATION "${CMAKE_INSTALL_MANDIR}/man${CMAKE_MATCH_1}")
 endforeach (page)
 
 # CPack
 set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "Experimental IRC client, daemon and bot")
-set (CPACK_PACKAGE_VERSION ${project_VERSION})
+set (CPACK_PACKAGE_VERSION "${project_version_safe}")
 set (CPACK_PACKAGE_VENDOR "Premysl Janouch")
-set (CPACK_PACKAGE_CONTACT "Přemysl Janouch <p.janouch@gmail.com>")
+set (CPACK_PACKAGE_CONTACT "Přemysl Janouch <p@janouch.name>")
 set (CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
 
 set (CPACK_GENERATOR "TGZ;ZIP")
 set (CPACK_PACKAGE_FILE_NAME
-	"${PROJECT_NAME}-${project_VERSION}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
-set (CPACK_PACKAGE_INSTALL_DIRECTORY "${PROJECT_NAME}-${project_VERSION}")
+	"${PROJECT_NAME}-${project_version_safe}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
+set (CPACK_PACKAGE_INSTALL_DIRECTORY "${PROJECT_NAME}-${project_version_safe}")
 
 set (CPACK_SOURCE_GENERATOR "TGZ;ZIP")
 set (CPACK_SOURCE_IGNORE_FILES "/\\\\.git;/build;/CMakeLists.txt.user")
-set (CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${project_VERSION}")
+set (CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${project_version_safe}")
 
 set (CPACK_SET_DESTDIR TRUE)
 include (CPack)

LICENSE

@@ -1,8 +1,7 @@
-Copyright (c) 2014 - 2015, Přemysl Janouch <p.janouch@gmail.com>
+Copyright (c) 2014 - 2018, Přemysl Janouch <p@janouch.name>
 
 Permission to use, copy, modify, and/or distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
+purpose with or without fee is hereby granted.
 
 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

NEWS

@@ -1,3 +1,157 @@
+0.9.7 (2018-10-21) "Business as Usual"
+
+ * kike: fix wildcard handling in WHOIS
+
+ * kike: properly handle STATS without parametetrs
+
+ * kike: abort earlier when an invalid mode character is detected while
+   processing channel MODE messages
+
+ * kike: do not send NICK notifications when the nickname doesn't really change
+
+ * kike: fix hostname string verification (only used for "server_name")
+
+
+0.9.6 (2018-06-22) "I've Been Sitting Here All This Time"
+
+ * Code has been relicensed to 0BSD and moved to a private git hosting
+
+ * Fix LibreSSL compatibility
+
+ * degesch: a second /disconnect cuts the connection by force
+
+ * degesch: send a QUIT message to the IRC server on Ctrl-C
+
+ * degesch: add a Slack plugin (even though the gateway's now defunct)
+
+ * degesch: show an error message on log write failure
+
+ * degesch: fix parsing of literal IPv6 addresses with port numbers
+
+ * degesch: fix some error messages
+
+ * degesch: workaround a Readline bug in the fancy-prompt.lua plugin
+
+ * kike: fix two memory leaks
+
+ * kike: improve error handling for incoming connections
+
+ * kike: disable TLS session reuse
+
+
+0.9.5 (2016-12-30) "It's Time"
+
+ * Better support for the KILL command
+
+ * degesch: export many more fields to the Lua API, add a prompt hook
+
+ * degesch: show channel user count in the prompt
+
+ * degesch: allow hiding join/part messages and other noise (Meta-Shift-H)
+
+ * degesch: allow autojoining channels with keys
+
+ * degesch: rejoin channels with keys on reconnect
+
+ * degesch: make /query without arguments just open the buffer
+
+ * degesch: add a censor plugin
+
+ * degesch: die on configuration parse errors
+
+ * degesch: request channel modes also on rejoin
+
+ * degesch: don't show remembered channel modes on parted channels
+
+ * degesch: fix highlight detection in colored text
+
+ * degesch: fix CTCP handling for the real world and don't decode X-QUOTEs
+
+ * degesch: add support for OpenSSL 1.1.0
+
+
+0.9.4 (2016-04-28) "Oops"
+
+ * degesch: fix crash on characters invalid in Windows-1252
+
+ * degesch: add an auto-rejoin plugin
+
+ * degesch: better date change messages with customizable formatting;
+   now also used in the backlog, so it looks closer to regular output
+
+ * ZyklonB: add a calc plugin providing a basic Scheme REPL
+
+ * ZyklonB: add a seen plugin
+
+ * kike, ZyklonB: use pledge(2) on OpenBSD
+
+
+0.9.3 (2016-03-27) "Doesn't Even Suck"
+
+ * Use TLS Server Name Indication when connecting to servers
+
+ * degesch: now we erase the screen before displaying buffers
+
+ * degesch: implemented word wrapping in buffers
+
+ * degesch: added autocomplete for /topic
+
+ * degesch: Lua API was improved and extended
+
+ * degesch: added a basic last.fm "now playing" plugin
+
+ * degesch: backlog limit was made configurable
+
+ * degesch: allow changing the list of IRC capabilities to use if available
+
+ * degesch: optimize buffer memory usage
+
+ * degesch: added logging of messages sent from /quote and plugins
+
+ * degesch: M-! and M-a to go to the next buffer in order with
+   a highlight or new activity respectively
+
+ * degesch: added --format for previewing things like MOTD files
+
+ * degesch: added /buffer goto supporting case insensitive partial matches
+
+ * kike: add support for IRCv3.2 server-time
+
+ * ZyklonB: plugins now run in a dedicated data directory
+
+ * ZyklonB: added a factoids plugin
+
+ * Remote addresses are now resolved asynchronously
+
+ * Various bugfixes
+
+
+0.9.2 (2015-12-31)
+
+ * degesch: added rudimentary support for Lua scripting
+
+ * degesch: added detection of pasting, so that it doesn't trigger other
+   keyboard shortcuts, such as for autocomplete
+
+ * degesch: added auto-away capability
+
+ * degesch: added an /oper command
+
+ * degesch: libedit backend works again
+ 
+ * degesch: added capability to edit the input line using VISUAL/EDITOR
+
+ * degesch: added Meta-Tab to switch to the last used buffer
+
+ * degesch: correctly respond to stopping and resuming (SIGTSTP)
+
+ * degesch: fixed decoding of text formatting
+
+ * degesch: unseen PMs now show up as highlights
+
+ * degesch: various bugfixes
+
+
 0.9.1 (2015-09-25)
 
  * All "ssl" options have been renamed to "tls"
@@ -20,7 +174,7 @@
  * degesch: joins, parts, nick changes and quits don't count as new buffer
    activity anymore
 
- * degesch: add Meta-H to open the full log file
+ * degesch: added Meta-H to open the full log file
 
  * degesch: various bugfixes and little improvements
 

README

@@ -1,127 +0,0 @@
-uirc3
-=====
-The unethical IRC trinity.  This project consists of an experimental IRC client,
-daemon, and bot.  It's all you're ever going to need for chatting.
-
-All of them have these potentially interesting properties:
- - full IPv6 support
- - TLS support, including client certificates
- - minimal dependencies
- - very compact and easy to hack on
- - permissive license
-
-degesch
--------
-The IRC client.  It is largely defined by being built on top of GNU Readline.
-Its interface should however feel familiar for weechat or irssi users.
-
-This is the youngest and largest application within the project.  It has most of
-the stuff you'd expect of an IRC client, such as being able to set up multiple
-servers, powerful configuration system, integrated help, mIRC text formatting,
-CTCP queries, automatic splitting of overlong messages, autocomplete, logging
-to file, and command aliases.
-
-kike
-----
-The IRC daemon.  It is designed to be used as a regular user application rather
-than a system-wide daemon.  If all you want is a decent, minimal IRCd for
-a small network of respectful users (or bots), or testing, this one will do it.
-
-Notable features:
- - TLS autodetection (why doesn't everyone have this?)
- - IRCop authentication through TLS client certificates
- - epoll/kqueue support; it should be able to handle quite a number of users
- - partial IRCv3 support
-
-Not supported:
- - server linking (which also means no services); I consider existing protocols
-   for this purpose ugly and tricky to implement correctly
- - online changes to configuration; the config system from degesch could be used
- - limits of almost any kind, just connections and mode +l
-
-ZyklonB
--------
-The IRC bot.  It builds upon the concept of my other VitaminA IRC bot.  The main
-characteristic of these two bots is that they run plugins as coprocesses, which
-allows for enhanced reliability and programming language freedom.
-
-While originally intended to be a simple C99 rewrite of the original bot, which
-was written in the GNU dialect of AWK, it fairly quickly became a playground
-where I added everything that seemed nice, and it eventually got me into writing
-the rest of this package.
-
-Notable features:
- - resilient against crashes, server disconnects and timeouts
- - SOCKS support (even though socksify can add that easily to any program)
-
-Building
---------
-Build dependencies: CMake, pkg-config, help2man, awk, sh, liberty (included)
-Runtime dependencies: openssl, curses (degesch),
-                      readline or libedit >= 2013-07-12 (degesch)
-
- $ git clone https://github.com/pjanouch/uirc3.git
- $ git submodule init
- $ git submodule update
- $ mkdir build
- $ cd build
- $ cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug \
-            -DWANT_READLINE=ON -DWANT_LIBEDIT=OFF
- $ make
-
-To install the application, you can do either the usual:
- # make install
-
-Or you can try telling CMake to make a package for you.  For Debian it is:
- $ cpack -G DEB
- # dpkg -i uirc3-*.deb
-
-Note that for versions of CMake before 2.8.9, you need to prefix cpack with
-`fakeroot' or file ownership will end up wrong.
-
-Running
--------
-`degesch' has in-program configuration.  Just run it and read the instructions.
-
-For the rest you might want to generate a configuration file:
- $ zyklonb --write-default-config
- $ kike --write-default-config
-
-After making any necessary edits to the file (there are comments to aid you in
-doing that), simply run the appropriate program with no arguments:
- $ zyklonb
- $ kike
-
-`ZyklonB' stays running in the foreground, therefore I recommend launching it
-inside a Screen or tmux session.
-
-`kike', on the other hand, immediately forks into the background.  Use the PID
-file or something like `killall' if you want to terminate it.  You can run it
-as a `forking' type systemd user service.
-
-Client Certificates
--------------------
-`kike' uses SHA1 fingerprints of TLS client certificates to authenticate users.
-To get the fingerprint from a certificate file in the required form, use:
- $ openssl x509 -in public.pem -outform DER | sha1sum
-
-Contributing and Support
-------------------------
-Use this project's GitHub to report any bugs, request features, or submit pull
-requests.  If you want to discuss this project, or maybe just hang out with
-the developer, feel free to join me at irc://anathema.irc.so, channel #anathema.
-
-Disclaimer
-----------
-I am not an antisemitist, I'm just being an offensive asshole with the naming.
-And no, I'm not going to change the names.
-
-License
--------
-`uirc3' is written by Přemysl Janouch <p.janouch@gmail.com>.
-
-You may use the software under the terms of the ISC license, the text of which
-is included within the package, or, at your option, you may relicense the work
-under the MIT or the Modified BSD License, as listed at the following site:
-
-http://www.gnu.org/licenses/license-list.html

README.adoc

@@ -0,0 +1,189 @@
+uirc3
+=====
+:compact-option:
+
+The [line-through]#unethical# edgy IRC trinity.  This project consists of an
+experimental IRC client, daemon, and bot.  It's all you're ever going to need
+for chatting, as long as you can make do with minimalist software.
+
+All of them have these potentially interesting properties:
+
+ - IPv6 support
+ - TLS support, including client certificates
+ - lean on dependencies (with the exception of 'degesch')
+ - compact and arguably easy to hack on
+ - very permissive license
+
+degesch
+-------
+The IRC client.  It is largely defined by being built on top of GNU Readline
+that has been hacked to death.  Its interface should feel somewhat familiar for
+weechat or irssi users.
+
+image::degesch.png[align="center"]
+
+This is the largest application within the project.  It has most of the stuff
+you'd expect of an IRC client, such as being able to set up multiple servers,
+a powerful configuration system, integrated help, text formatting, CTCP queries,
+automatic splitting of overlong messages, autocomplete, logging to file,
+auto-away, command aliases and basic support for Lua scripting.
+
+kike
+----
+The IRC daemon.  It is designed to be used as a regular user application rather
+than a system-wide daemon.  If all you want is a decent, minimal IRCd for
+testing purposes or a small network of respectful users (or bots), this one will
+do it just fine.
+
+Notable features:
+
+ - TLS autodetection (why doesn't everyone have this?), using secure defaults
+ - IRCop authentication via TLS client certificates
+ - epoll/kqueue support; this means that it should be able to handle quite
+   a number of concurrent user connections
+ - partial IRCv3 support
+
+Not supported:
+
+ - server linking (which also means no services); I consider existing protocols
+   for this purpose ugly and tricky to implement correctly; I've also found no
+   use for this feature yet
+ - online changes to configuration; the configuration system from degesch could
+   be used to implement this feature if needed
+ - limits of almost any kind, just connections and mode `+l`
+
+This program has been https://git.janouch.name/p/haven/src/branch/master/hid[
+ported to Go], and development continues over there.
+
+ZyklonB
+-------
+The IRC bot.  It builds upon the concept of my other VitaminA IRC bot.  The main
+characteristic of these two bots is that they run plugins as coprocesses, which
+allows for enhanced reliability and programming language freedom.
+
+While originally intended to be a simple rewrite of the original AWK bot in C,
+it fairly quickly became a playground, and it eventually got me into writing
+the rest of the package.
+
+It survives crashes, server disconnects and timeouts, and also has native SOCKS
+support (even though socksify can add that easily to any program).
+
+Packages
+--------
+Regular releases are sporadic.  git master should be stable enough.  You can get
+a package with the latest development version from Archlinux's AUR.
+
+Building
+--------
+Build dependencies: CMake, pkg-config, help2man, awk, sh, liberty (included) +
+Runtime dependencies: openssl +
+Additionally for degesch: curses, libffi, lua >= 5.3 (optional),
+                          readline >= 6.0 or libedit >= 2013-07-12
+
+ $ git clone --recursive https://git.janouch.name/p/uirc3.git
+ $ mkdir uirc3/build
+ $ cd uirc3/build
+ $ cmake .. -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug \
+            -DWANT_READLINE=ON -DWANT_LIBEDIT=OFF -DWANT_LUA=ON
+ $ make
+
+To install the application, you can do either the usual:
+
+ # make install
+
+Or you can try telling CMake to make a package for you.  For Debian it is:
+
+ $ cpack -G DEB
+ # dpkg -i uirc3-*.deb
+
+Usage
+-----
+'degesch' has in-program configuration.  Just run it and read the instructions.
+
+For the rest you might want to generate a configuration file:
+
+ $ zyklonb --write-default-config
+ $ kike --write-default-config
+
+After making any necessary edits to the file (there are comments to aid you in
+doing that), simply run the appropriate program with no arguments:
+
+ $ zyklonb
+ $ kike
+
+'ZyklonB' stays running in the foreground, therefore I recommend launching it
+inside a Screen or tmux session.
+
+'kike', on the other hand, immediately forks into the background.  Use the PID
+file or something like `killall` if you want to terminate it.  You can run it
+as a `forking` type systemd user service.
+
+Client Certificates
+-------------------
+'kike' uses SHA1 fingerprints of TLS client certificates to authenticate users.
+To get the fingerprint from a certificate file in the required form, use:
+
+ $ openssl x509 -in public.pem -outform DER | sha1sum
+
+Custom Key Bindings in degesch
+------------------------------
+The default and preferred frontend used in 'degesch' is GNU Readline.  This
+means that you can change your bindings by editing '~/.inputrc'.  For example:
+....
+# Preload with system-wide settings
+$include /etc/inputrc
+
+# Make M-left and M-right reorder buffers
+$if degesch
+"\e\e[C": move-buffer-right
+"\e\e[D": move-buffer-left
+$endif
+....
+Consult the source code and the GNU Readline manual for a list of available
+functions.  Also refer to the latter for the exact syntax of this file.
+Beware that you can easily break the program if you're not careful.
+
+How do I make degesch look like the screenshot?
+-----------------------------------------------
+First of all, you must build it with Lua support.  With the defaults, degesch
+doesn't look very fancy because some things are rather hackish, and I also don't
+want to depend on UTF-8 or 256color terminals in the code.  In addition to that,
+I appear to be one of the few people who use black on white terminals.
+
+ /set behaviour.date_change_line = "%a %e %b %Y"
+ /set behaviour.plugin_autoload += "fancy-prompt.lua,thin-cursor.lua"
+ /set behaviour.backlog_helper = "LESSSECURE=1 less -R +Gb -Ps'Backlog ?ltlines %lt-%lb?L/%L. .?e(END):?pB%pB\\%..'"
+ /set behaviour.backlog_helper_strip_formatting = off
+ /set attributes.reset = "\x1b[0m"
+ /set attributes.userhost = "\x1b[38;5;109m"
+ /set attributes.join = "\x1b[38;5;108m"
+ /set attributes.part = "\x1b[38;5;138m"
+ /set attributes.external = "\x1b[38;5;248m"
+ /set attributes.timestamp = "\x1b[48;5;255m\x1b[38;5;250m"
+
+Configuration profiles
+----------------------
+Even though the applications don't directly support configuration profiles,
+they conform to the XDG standard, and thus you can change the location they
+load configuration from via XDG_CONFIG_HOME (normally '~/.config') and the
+location where store their data via XDG_DATA_HOME (normally '~/.local/share').
+
+It would be relatively easy to make the applications assume whatever name you
+run them under (for example by using symbolic links), and load different
+configurations accordingly, but I consider it rather messy and unnecessary.
+
+Contributing and Support
+------------------------
+Use https://git.janouch.name/p/uirc3 to report any bugs, request features,
+or submit pull requests.  `git send-email` is tolerated.  If you want to discuss
+the project, feel free to join me at ircs://irc.janouch.name, channel #dev.
+
+Bitcoin donations are accepted at: 12r5uEWEgcHC46xd64tt3hHt9EUvYYDHe9
+
+License
+-------
+This software is released under the terms of the 0BSD license, the text of which
+is included within the package along with the list of authors.
+
+Note that 'degesch' technically becomes GPL-licensed when you statically link it
+against GNU Readline, but that is not a concern of this source package.

config.h.in

@@ -1,10 +1,13 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
-#define PROGRAM_VERSION "${project_VERSION}"
-#define PLUGIN_DIR "${CMAKE_INSTALL_PREFIX}/${plugin_dir}"
+#define PROGRAM_VERSION "${project_version}"
+#define ZYKLONB_PLUGIN_DIR "${CMAKE_INSTALL_PREFIX}/${zyklonb_plugin_dir}"
 
 #cmakedefine HAVE_READLINE
 #cmakedefine HAVE_EDITLINE
+#cmakedefine HAVE_LUA
+
+#cmakedefine01 ICONV_ACCEPTS_TRANSLIT
 
 #endif  // ! CONFIG_H

plugins/degesch/auto-rejoin.lua

@@ -0,0 +1,48 @@
+--
+-- auto-rejoin.lua: join back automatically when someone kicks you
+--
+-- Copyright (c) 2016, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+
+local timeout
+degesch.setup_config {
+	timeout = {
+		type = "integer",
+		comment = "auto rejoin timeout",
+		default = "0",
+
+		on_change = function (v)
+			timeout = v
+		end,
+		validate = function (v)
+			if v < 0 then error ("timeout must not be negative", 0) end
+		end,
+	},
+}
+
+async, await = degesch.async, coroutine.yield
+degesch.hook_irc (function (hook, server, line)
+	local msg = degesch.parse (line)
+	if msg.command ~= "KICK" then return line end
+
+	local who = msg.prefix:match ("^[^!]*")
+	local channel, whom = table.unpack (msg.params)
+	if who ~= whom and whom == server.user.nickname then
+		async.go (function ()
+			await (async.timer_ms (timeout * 1000))
+			server:send ("JOIN " .. channel)
+		end)
+	end
+	return line
+end)

plugins/degesch/censor.lua

@@ -0,0 +1,73 @@
+--
+-- censor.lua: black out certain users' messages
+--
+-- Copyright (c) 2016, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+
+local to_pattern = function (mask)
+	if not mask:match ("!") then mask = mask .. "!*" end
+	if not mask:match ("@") then mask = mask .. "@*" end
+
+	-- That is, * acts like a wildcard, otherwise everything is escaped
+	return "^" .. mask:gsub ("[%^%$%(%)%%%.%[%]%+%-%?]", "%%%0")
+		:gsub ("%*", ".*") .. "$"
+end
+
+local patterns = {}
+local read_masks = function (v)
+	patterns = {}
+	local add = function (who, where)
+		local channels = patterns[who] or {}
+		table.insert (channels, where)
+		patterns[who] = channels
+	end
+	for item in v:lower ():gmatch ("[^,]+") do
+		local who, where = item:match ("^([^/]+)/*(.*)")
+		if who then add (to_pattern (who), where == "" or where) end
+	end
+end
+
+degesch.setup_config {
+	masks = {
+		type = "string_array",
+		default = "\"\"",
+		comment = "user masks (optionally \"/#channel\") to censor",
+		on_change = read_masks
+	},
+}
+
+local censor = function (line)
+	-- Taking a shortcut to avoid lengthy message reassembly
+	local start, text = line:match ("^(.- PRIVMSG .-:)(.*)$")
+	local ctcp, rest = text:match ("^(\x01%g+ )(.*)")
+	text = ctcp and ctcp .. "\x0301,01" .. rest or "\x0301,01" .. text
+	return start .. text
+end
+
+degesch.hook_irc (function (hook, server, line)
+	local msg = degesch.parse (line)
+	if msg.command ~= "PRIVMSG" then return line end
+
+	local channel = msg.params[1]:lower ()
+	for who, where in pairs (patterns) do
+		if msg.prefix:lower ():match (who) then
+			for _, x in pairs (where) do
+				if x == true or x == channel then
+					return censor (line)
+				end
+			end
+		end
+	end
+	return line
+end)

plugins/degesch/fancy-prompt.lua

@@ -0,0 +1,104 @@
+--
+-- fancy-prompt.lua: the fancy multiline prompt you probably want
+--
+-- Copyright (c) 2016, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+-- Beware that it is a hack and only goes about 90% of the way, which is why
+-- this functionality is only available as a plugin in the first place
+-- (well, and also for customizability).
+--
+-- The biggest problem is that the way we work with Readline is incompatible
+-- with multiline prompts, and normal newlines just don't work.  This is being
+-- circumvented by using an overflowing single-line prompt with a specially
+-- crafted character in the rightmost column that prevents the bar's background
+-- from spilling all over the last line.
+--
+-- There is also a problem with C-r search rendering not clearing out the
+-- background but to really fix that mode, we'd have to fully reimplement it
+-- since its alternative prompt very often gets overriden by accident anyway.
+
+degesch.hook_prompt (function (hook)
+	local current = degesch.current_buffer
+	local chan = current.channel
+	local s = current.server
+
+	local bg_color = "255"
+	local current_n = 0
+	local active = ""
+	for i, buffer in ipairs (degesch.buffers) do
+		if buffer == current then
+			current_n = i
+		elseif buffer.new_messages_count ~= buffer.new_unimportant_count then
+			if active ~= "" then active = active .. "," end
+			if buffer.highlighted then
+				active = active .. "!"
+				bg_color = "224"
+			end
+			active = active .. i
+		end
+	end
+	if active ~= "" then active = "(" .. active .. ")" end
+	local x = current_n .. ":" .. current.name
+	if chan and chan.users_len ~= 0 then
+		local params = ""
+		for mode, param in pairs (chan.param_modes) do
+			params = params .. " +" .. mode .. " " .. param
+		end
+		local modes = chan.no_param_modes .. params:sub (3)
+		if modes ~= "" then x = x .. "(+" .. modes .. ")" end
+		x = x .. "{" .. chan.users_len .. "}"
+	end
+	if current.hide_unimportant then x = x .. "<H>" end
+
+	local lines, cols = degesch.get_screen_size ()
+	x = x .. " " .. active .. string.rep (" ", cols)
+
+	-- Readline seems to be broken and completely corrupts the prompt
+	-- (tested on 7.0.003 Archlinux, 7.0-5 Debian buster)
+	x = x:gsub("[\128-\255]", "?")
+
+	-- Cut off extra characters and apply formatting, including the hack.
+	-- Note that this doesn't count with full-width or zero-width characters.
+	local overflow = utf8.offset (x, cols - 1)
+	if overflow then x = x:sub (1, overflow) end
+	x = "\x01\x1b[0;4;1;38;5;16m\x1b[48;5;" .. bg_color .. "m\x02" ..
+		x ..  "\x01\x1b[0;4;1;7;38;5;" .. bg_color .. "m\x02 \x01\x1b[0;1m\x02"
+
+	local user_prefix = function (chan, user)
+		for i, chan_user in ipairs (chan.users) do
+			if chan_user.user == user then return chan_user.prefixes end
+		end
+		return ""
+	end
+	if s then
+		x = x .. "["
+		local state = s.state
+		if state == "disconnected" or state == "connecting" then
+			x = x .. "(" .. state .. ")"
+		elseif state ~= "registered" then
+			x = x .. "(unregistered)"
+		else
+			local user, modes = s.user, s.user_mode
+			if chan then x = x .. user_prefix (chan, user) end
+			x = x .. user.nickname
+			if modes ~= "" then x = x .. "(" .. modes .. ")" end
+		end
+		x = x .. "] "
+	else
+		-- There needs to be at least one character so that the cursor
+		-- doesn't get damaged by our hack in that last column
+		x = x .. "> "
+	end
+	return x
+end)

plugins/degesch/last-fm.lua

@@ -0,0 +1,178 @@
+--
+-- last-fm.lua: "now playing" feature using the last.fm API
+--
+-- Dependencies: lua-cjson (from luarocks e.g.)
+--
+-- I call this style closure-oriented programming
+--
+-- Copyright (c) 2016, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+
+local cjson = require "cjson"
+
+-- Setup configuration to load last.fm API credentials from
+local user, api_key
+degesch.setup_config {
+	user    = {
+		type = "string",
+		comment = "last.fm username",
+		on_change = function (v) user    = v end
+	},
+	api_key = {
+		type = "string",
+		comment = "last.fm API key",
+		on_change = function (v) api_key = v end
+	},
+}
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+-- Generic error reporting
+local report_error = function (buffer, error)
+	buffer:log ("last-fm error: " .. error)
+end
+
+-- Process data return by the server and extract the now playing song
+local process = function (buffer, data, action)
+	-- There's no reasonable Lua package to parse HTTP that I could find
+	local s, e, v, status, message = string.find (data, "(%S+) (%S+) .+\r\n")
+	if not s then return "server returned unexpected data" end
+	if status ~= "200" then return status .. " " .. message end
+
+	local s, e = string.find (data, "\r\n\r\n")
+	if not s then return "server returned unexpected data" end
+
+	local parser = cjson.new ()
+	data = parser.decode (string.sub (data, e + 1))
+	if not data.recenttracks or not data.recenttracks.track then
+		return "invalid response" end
+
+	-- Need to make some sense of the XML automatically converted to JSON
+	local text_of = function (node)
+		if type (node) ~= "table" then return node end
+		return node["#text"] ~= "" and node["#text"] or nil
+	end
+
+	local name, artist, album
+	for i, track in ipairs (data.recenttracks.track) do
+		if track["@attr"] and track["@attr"].nowplaying then
+			if track.name   then name   = text_of (track.name)   end
+			if track.artist then artist = text_of (track.artist) end
+			if track.album  then album  = text_of (track.album)  end
+		end
+	end
+
+	if not name then
+		action (false)
+	else
+		local np = "\"" .. name .. "\""
+		if artist then np = np .. " by "   .. artist end
+		if album  then np = np .. " from " .. album  end
+		action (np)
+	end
+end
+
+-- Set up the connection and make the request
+local on_connected = function (buffer, c, host, action)
+	-- Buffer data in the connection object
+	c.data = ""
+	c.on_data = function (data)
+		c.data = c.data .. data
+	end
+
+	-- And process it after we receive everything
+	c.on_eof = function ()
+		error = process (buffer, c.data, action)
+		if error then report_error (buffer, error) end
+		c:close ()
+	end
+	c.on_error = function (e)
+		report_error (buffer, e)
+	end
+
+	-- Make the unencrypted HTTP request
+	local url = "/2.0/?method=user.getrecenttracks&user=" .. user ..
+		"&limit=1&api_key=" .. api_key .. "&format=json"
+	c:send ("GET " .. url .. " HTTP/1.1\r\n")
+	c:send ("User-agent: last-fm.lua\r\n")
+	c:send ("Host: " .. host .. "\r\n")
+	c:send ("Connection: close\r\n")
+	c:send ("\r\n")
+end
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+-- Avoid establishing more than one connection at a time
+local running
+
+-- Initiate a connection to last.fm servers
+async, await = degesch.async, coroutine.yield
+local make_request = function (buffer, action)
+	if not user or not api_key then
+		report_error (buffer, "configuration is incomplete")
+		return
+	end
+
+	if running then running:cancel () end
+	running = async.go (function ()
+		local c, host, e = await (async.dial ("ws.audioscrobbler.com", 80))
+		if e then
+			report_error (buffer, e)
+		else
+			on_connected (buffer, c, host, action)
+		end
+		running = nil
+	end)
+end
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local now_playing
+
+local tell_song = function (buffer)
+	if now_playing == nil then
+		buffer:log ("last-fm: I don't know what you're listening to")
+	elseif not now_playing then
+		buffer:log ("last-fm: not playing anything right now")
+	else
+		buffer:log ("last-fm: now playing: " .. now_playing)
+	end
+end
+
+local send_song = function (buffer)
+	if not now_playing then
+		tell_song (buffer)
+	else
+		buffer:execute ("/me is listening to " .. now_playing)
+	end
+end
+
+-- Hook input to simulate new commands
+degesch.hook_input (function (hook, buffer, input)
+	if input == "/np" then
+		make_request (buffer, function (np)
+			now_playing = np
+			send_song (buffer)
+		end)
+	elseif input == "/np?" then
+		make_request (buffer, function (np)
+			now_playing = np
+			tell_song (buffer)
+		end)
+	elseif input == "/np!" then
+		send_song (buffer)
+	else
+		return input
+	end
+end)

plugins/degesch/ping-timeout.lua

@@ -0,0 +1,32 @@
+--
+-- ping-timeout.lua: ping timeout readability enhancement plugin
+--
+-- Copyright (c) 2015 - 2016, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+
+degesch.hook_irc (function (hook, server, line)
+	local msg = degesch.parse (line)
+	local start, timeout = line:match ("^(.* :Ping timeout:) (%d+) seconds$")
+	if msg.command ~= "QUIT" or not start then
+		return line
+	end
+
+	local minutes = timeout // 60
+	if minutes == 0 then
+		return line
+	end
+
+	local seconds = timeout % 60
+	return ("%s %d minutes, %d seconds"):format (start, minutes, seconds)
+end)

plugins/degesch/slack.lua

@@ -0,0 +1,147 @@
+--
+-- slack.lua: try to fix up UX when using the Slack IRC gateway
+--
+-- Copyright (c) 2017, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+
+local servers = {}
+local read_servers = function (v)
+	servers = {}
+	for name in v:lower ():gmatch "[^,]+" do
+		servers[name] = true
+	end
+end
+
+-- This is a reverse list of Slack's automatic emoji, noseless forms
+local unemojify, emoji, emoji_default = false, {}, {
+	heart                        = "<3",
+	broken_heart                 = "</3",
+	sunglasses                   = "8)",
+	anguished                    = "D:",
+	cry                          = ":'(",
+	monkey_face                  = ":o)",
+	kiss                         = ":*",
+	smiley                       = "=)",
+	smile                        = ":D",
+	wink                         = ";)",
+	laughing                     = ":>",
+	neutral_face                 = ":|",
+	open_mouth                   = ":o",
+	angry                        = ">:(",
+	slightly_smiling_face        = ":)",
+	disappointed                 = ":(",
+	confused                     = ":/",
+	stuck_out_tongue             = ":p",
+	stuck_out_tongue_winking_eye = ";p",
+}
+local load_emoji = function (extra)
+	emoji = {}
+	for k, v in pairs (emoji_default) do emoji[k] = v end
+	for k, v in extra:gmatch "([^,]+) ([^,]+)" do emoji[k] = v end
+end
+
+degesch.setup_config {
+	servers = {
+		type = "string_array",
+		default = "\"\"",
+		comment = "list of server names that are Slack IRC gateways",
+		on_change = read_servers
+	},
+	unemojify = {
+		type = "boolean",
+		default = "true",
+		comment = "convert emoji to normal ASCII emoticons",
+		on_change = function (v) unemojify = v end
+	},
+	extra_emoji = {
+		type = "string_array",
+		default = "\"grinning :)),joy :'),innocent o:),persevere >_<\"",
+		comment = "overrides or extra emoji for unemojify",
+		on_change = function (v) load_emoji (v) end
+	}
+}
+
+-- We can handle external messages about what we've supposedly sent just fine,
+-- so let's get rid of that "[username] some message sent from the web UI" crap
+degesch.hook_irc (function (hook, server, line)
+	local msg, us = degesch.parse (line), server.user
+	if not servers[server.name] or msg.command ~= "PRIVMSG" or not us
+		or msg.params[1]:lower () ~= us.nickname:lower () then return line end
+
+	-- Taking a shortcut to avoid lengthy message reassembly
+	local quoted_nick = us.nickname:gsub ("[%^%$%(%)%%%.%[%]%*%+%-%?]", "%%%0")
+	local text = line:match ("^.- PRIVMSG .- :%[" .. quoted_nick .. "%] (.*)$")
+	if not text then return line end
+	return ":" .. us.nickname .. "!" .. server.irc_user_host .. " PRIVMSG "
+		.. msg.prefix:match "^[^!@]*" .. " :" .. text
+end)
+
+-- Unfuck emoji and :nick!nick@irc.tinyspeck.com MODE #channel +v nick : active
+degesch.hook_irc (function (hook, server, line)
+	if not servers[server.name] then return line end
+	if unemojify then
+		local start, text = line:match ("^(.- PRIVMSG .-:)(.*)$")
+		if start then return start .. text:gsub (":([a-z_]+):", function (name)
+			if emoji[name] then return emoji[name] end
+			return ":" .. name .. ":"
+		end) end
+	end
+	return line:gsub ("^(:%S+ MODE .+) : .*", "%1")
+end)
+
+-- The gateway simply ignores the NAMES command altogether
+degesch.hook_input (function (hook, buffer, input)
+	if not buffer.channel or not servers[buffer.server.name]
+		or not input:match "^/names%s*$" then return input end
+
+	local users = buffer.channel.users
+	table.sort (users, function (a, b)
+		if a.prefixes > b.prefixes then return true end
+		if a.prefixes < b.prefixes then return false end
+		return a.user.nickname < b.user.nickname
+	end)
+
+	local names = "Users on " .. buffer.channel.name .. ":"
+	for i, chan_user in ipairs (users) do
+		names = names .. " " .. chan_user.prefixes .. chan_user.user.nickname
+	end
+	buffer:log (names)
+end)
+
+degesch.hook_completion (function (hook, data, word)
+	local chan = degesch.current_buffer.channel
+	local server = degesch.current_buffer.server
+	if not chan or not servers[server.name] then return end
+
+	-- In /commands there is typically no desire at all to add the at sign
+	if data.location == 1 and data.words[1]:match "^/" then return end
+
+	-- Handle both when the at sign is already there and when it is not
+	local needle = word:gsub ("^@", ""):lower ()
+
+	local t = {}
+	local try = function (name)
+		if data.location == 0 then name = name .. ":" end
+		if name:sub (1, #needle):lower () == needle then
+			table.insert (t, "@" .. name)
+		end
+	end
+	for _, chan_user in ipairs (chan.users) do
+		try (chan_user.user.nickname)
+	end
+	for _, special in ipairs { "channel", "here" } do
+		try (special)
+	end
+	return t
+end)

plugins/degesch/thin-cursor.lua

@@ -0,0 +1,27 @@
+--
+-- thin-cursor.lua: set a thin cursor
+--
+-- Copyright (c) 2016, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+-- If tmux doesn't work, add the following to its configuration:
+--   set -as terminal-overrides ',*:Ss=\E[%p1%d q:Se=\E[2 q'
+-- Change the "2" as per http://invisible-island.net/xterm/ctlseqs/ctlseqs.html
+
+local out = io.output ()
+out:write ("\x1b[6 q"):flush ()
+
+-- By registering a global variable, we get notified about plugin unload
+x = setmetatable ({}, { __gc = function ()
+	out:write ("\x1b[2 q"):flush ()
+end })

plugins/degesch/utm-filter.lua

@@ -0,0 +1,62 @@
+--
+-- utm-filter.lua: filter out Google Analytics bullshit from URLs
+--
+-- Copyright (c) 2015, Přemysl Janouch <p@janouch.name>
+--
+-- Permission to use, copy, modify, and/or distribute this software for any
+-- purpose with or without fee is hereby granted.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+-- WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+-- MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+-- SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+-- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+-- OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+--
+
+-- A list of useless URL parameters that don't affect page function
+local banned = {
+	gclid        = 1,
+
+	utm_source   = 1,
+	utm_medium   = 1,
+	utm_term     = 1,
+	utm_content  = 1,
+	utm_campaign = 1,
+}
+
+-- Go through a parameter list and throw out any banned elements
+local do_args = function (args)
+	local filtered = {}
+	for part in args:gmatch ("[^&]+") do
+		if not banned[part:match ("^[^=]*")] then
+			table.insert (filtered, part)
+		end
+	end
+	return table.concat (filtered, "&")
+end
+
+-- Filter parameters in both the query and the fragment part of an URL
+local do_single_url = function (url)
+	return url:gsub ('^([^?#]*)%?([^#]*)', function (start, query)
+		local clean = do_args (query)
+		return #clean > 0 and start .. "?" .. clean or start
+	end, 1):gsub ('^([^#]*)#(.*)', function (start, fragment)
+		local clean = do_args (fragment)
+		return #clean > 0 and start .. "#" .. clean or start
+	end, 1)
+end
+
+local do_text = function (text)
+	return text:gsub ('%f[%g]https?://%g+', do_single_url)
+end
+
+degesch.hook_irc (function (hook, server, line)
+	local start, message = line:match ("^(.* :)(.*)$")
+	return message and start .. do_text (message) or line
+end)
+
+degesch.hook_input (function (hook, buffer, input)
+	return do_text (input)
+end)

plugins/zyklonb/calc

@@ -0,0 +1,241 @@
+#!/usr/bin/env guile
+
+  ZyklonB calc plugin, basic Scheme evaluator
+
+  Copyright 2016 Přemysl Janouch
+  See the file LICENSE for licensing information.
+
+!#
+
+(import (rnrs (6)))
+(use-modules ((rnrs) :version (6)))
+
+; --- Message parsing ----------------------------------------------------------
+
+(define-record-type message (fields prefix command params))
+(define (parse-message line)
+  (let f ([parts '()] [chars (string->list line)])
+    (define (take-word w chars)
+      (if (or (null? chars) (eqv? (car chars) #\x20))
+        (f (cons (list->string (reverse w)) parts)
+           (if (null? chars) chars (cdr chars)))
+        (take-word (cons (car chars) w) (cdr chars))))
+    (if (null? chars)
+      (let ([data (reverse parts)])
+        (when (< (length data) 2)
+          (error 'parse-message "invalid message"))
+        (make-message (car data) (cadr data) (cddr data)))
+      (if (null? parts)
+        (if (eqv? (car chars) #\:)
+          (take-word '() (cdr chars))
+          (f (cons #f parts) chars))
+        (if (eqv? (car chars) #\:)
+          (f (cons (list->string (cdr chars)) parts) '())
+          (take-word '() chars))))))
+
+; --- Utilities ----------------------------------------------------------------
+
+(define (display-exception e port)
+  (define (puts . x)
+    (for-all (lambda (a) (display a port)) x)
+    (newline port))
+
+  (define (record-fields rec)
+    (let* ([rtd (record-rtd rec)]
+           [v (record-type-field-names rtd)]
+           [len (vector-length v)])
+      (map (lambda (k i) (cons k ((record-accessor rtd i) rec)))
+        (vector->list v)
+        (let c ([i len] [ls '()])
+          (if (= i 0) ls (c (- i 1) (cons (- i 1) ls)))))))
+
+  (puts "Caught " (record-type-name (record-rtd e)))
+  (for-all
+    (lambda (subtype)
+      (puts "  " (record-type-name (record-rtd subtype)))
+      (for-all
+        (lambda (field) (puts "    " (car field) ": " (cdr field)))
+        (record-fields subtype)))
+    (simple-conditions e)))
+
+; XXX - we have to work around Guile's lack of proper eol-style support
+(define xc (make-transcoder (latin-1-codec) 'lf 'replace))
+(define irc-input-port (transcoded-port (standard-input-port) xc))
+(define irc-output-port (transcoded-port (standard-output-port) xc))
+
+(define (send . message)
+  (for-all (lambda (x) (display x irc-output-port)) message)
+  (display #\return irc-output-port)
+  (newline irc-output-port)
+  (flush-output-port irc-output-port))
+
+(define (get-line-crlf port)
+  (define line (get-line port))
+  (if (eof-object? line) line
+    (let ([len (string-length line)])
+      (if (and (> len 0) (eqv? (string-ref line (- len 1)) #\return))
+        (substring line 0 (- len 1)) line))))
+
+(define (get-config name)
+  (send "ZYKLONB get_config :" name)
+  (car (message-params (parse-message (get-line-crlf irc-input-port)))))
+
+(define (extract-nick prefix)
+  (do ([i 0 (+ i 1)] [len (string-length prefix)])
+      ([or (= i len) (char=? #\! (string-ref prefix i))]
+       [substring prefix 0 i])))
+
+(define (string-after s start)
+  (let ([s-len (string-length s)] [with-len (string-length start)])
+    (and (>= s-len with-len)
+         (string=? (substring s 0 with-len) start)
+         (substring s with-len s-len))))
+
+; --- Calculator ---------------------------------------------------------------
+
+; Evaluator derived from the example in The Scheme Programming Language.
+;
+; Even though EVAL with a carefully crafted environment would also do a good
+; job at sandboxing, it would probably be impossible to limit execution time...
+
+(define (env-new formals actuals env)
+  (cond [(null? formals) env]
+        [(symbol? formals) (cons (cons formals actuals) env)]
+        [else (cons (cons (car formals) (car actuals))
+                    (env-new (cdr formals) (cdr actuals) env))]))
+(define (env-lookup var env) (cdr (assq var env)))
+(define (env-assign var val env) (set-cdr! (assq var env) val))
+
+(define (check-reductions r)
+  (if (= (car r) 0)
+    (error 'check-reductions "reduction limit exceeded")
+    (set-car! r (- (car r) 1))))
+
+; TODO - think about implementing more syntactical constructs,
+;   however there's not much point in having anything else in a calculator...
+(define (exec expr r env)
+  (check-reductions r)
+  (cond [(symbol? expr) (env-lookup expr env)]
+        [(pair? expr)
+         (case (car expr)
+           [(quote) (cadr expr)]
+           [(lambda) (lambda vals
+                       (let ([env (env-new (cadr expr) vals env)])
+                         (let loop ([exprs (cddr expr)])
+                           (if (null? (cdr exprs))
+                             (exec (car exprs) r env)
+                             (begin (exec (car exprs) r env)
+                                    (loop (cdr exprs)))))))]
+           [(if) (if (exec (cadr expr) r env)
+                   (exec (caddr expr) r env)
+                   (exec (cadddr expr) r env))]
+           [(set!) (env-assign (cadr expr) (exec (caddr expr) r env) env)]
+           [else (apply (exec (car expr) r env)
+                        (map (lambda (x) (exec x r env)) (cdr expr)))])]
+        [else expr]))
+
+(define-syntax forward
+  (syntax-rules ()
+    [(_) '()]
+    [(_ a b ...) (cons (cons (quote a) a) (forward b ...))]))
+
+; ...which can't prevent me from simply importing most of the standard library
+(define base-library
+  (forward
+    ; Equivalence, procedure predicate, booleans
+    eqv? eq? equal? procedure? boolean? boolean=? not
+    ; numbers, numerical input and output
+    number? complex? real? rational? integer?  exact? inexact? exact inexact
+    real-valued? rational-valued? integer-valued? number->string string->number
+    ; Arithmetic
+    = < > <= >= zero? positive? negative? odd? even? finite? infinite? nan?
+    min max + * - / abs div-and-mod div mod div0-and-mod0 div0 mod0
+    gcd lcm numerator denominator floor ceiling truncate round
+    rationalize exp log sin cos tan asin acos atan sqrt expt
+    make-rectangular make-polar real-part imag-part magnitude angle
+    ; Pairs and lists
+    map for-each cons car cdr caar cadr cdar cddr
+    caaar caadr cadar caddr cdaar cdadr cddar cdddr
+    caaaar caaadr caadar caaddr cadaar cadadr caddar cadddr
+    cdaaar cdaadr cdadar cdaddr cddaar cddadr cdddar cddddr
+    pair? null? list? list length append reverse list-tail list-ref
+    ; Symbols
+    symbol? symbol=? symbol->string string->symbol
+    ; Characters
+    char? char=? char<? char>? char<=? char>=?  char->integer integer->char
+    ; Strings; XXX - omitted make-string - can cause OOM
+    string? string=? string<? string>? string<=? string>=?
+    string string-length string-ref substring
+    string-append string->list list->string string-for-each string-copy
+    ; Vectors; XXX - omitted make-vector - can cause OOM
+    vector? vector vector-length vector-ref vector-set!
+    vector->list list->vector vector-fill! vector-map vector-for-each
+    ; Control features
+    apply call/cc values call-with-values dynamic-wind))
+(define extended-library
+  (forward
+    char-upcase char-downcase char-titlecase char-foldcase
+    char-ci=? char-ci<? char-ci>? char-ci<=? char-ci>=?
+    char-alphabetic? char-numeric? char-whitespace?
+    char-upper-case? char-lower-case? char-title-case?
+    string-upcase string-downcase string-titlecase string-foldcase
+    string-ci=? string-ci<? string-ci>? string-ci<=? string-ci>=?
+    find for-all exists filter partition fold-left fold-right
+    remp remove remv remq memp member memv memq assp assoc assv assq cons*
+    list-sort vector-sort vector-sort!
+    bitwise-not bitwise-and bitwise-ior bitwise-xor bitwise-if
+    bitwise-bit-count bitwise-length bitwise-first-bit-set bitwise-bit-set?
+    bitwise-copy-bit bitwise-bit-field bitwise-copy-bit-field
+    bitwise-arithmetic-shift bitwise-rotate-bit-field bitwise-reverse-bit-field
+    bitwise-arithmetic-shift-left bitwise-arithmetic-shift-right
+    set-car! set-cdr! string-set! string-fill!))
+(define (interpret expr)
+  (exec expr '(2000) (append base-library extended-library)))
+
+; We could show something a bit nicer but it would be quite Guile-specific
+(define (error-string e)
+  (map (lambda (x) (string-append " " (symbol->string x)))
+    (filter (lambda (x) (not (member x '(&who &message &irritants &guile))))
+      (map (lambda (x) (record-type-name (record-rtd x)))
+        (simple-conditions e)))))
+
+(define (calc input respond)
+  (define (stringify x)
+    (call-with-string-output-port (lambda (port) (write x port))))
+  (guard (e [else (display-exception e (current-error-port))
+                  (apply respond "caught" (error-string e))])
+    (let* ([input (open-string-input-port input)]
+           [data (let loop ()
+                   (define datum (get-datum input))
+                   (if (eof-object? datum) '() (cons datum (loop))))])
+      (call-with-values
+        (lambda () (interpret (list (append '(lambda ()) data))))
+        (lambda message
+          (for-all (lambda (x) (respond (stringify x))) message))))))
+
+; --- Main loop ----------------------------------------------------------------
+
+(define prefix (get-config "prefix"))
+(send "ZYKLONB register")
+
+(define (process msg)
+  (when (string-ci=? (message-command msg) "PRIVMSG")
+    (let* ([nick (extract-nick (message-prefix msg))]
+           [target (car (message-params msg))]
+           [response-begin
+             (apply string-append "PRIVMSG "
+               (if (memv (string-ref target 0) (string->list "#&!+"))
+                 `(,target " :" ,nick ": ") `(,nick " :")))]
+           [respond (lambda args (apply send response-begin args))]
+           [text (cadr (message-params msg))]
+           [input (or (string-after text (string-append prefix "calc "))
+                      (string-after text (string-append prefix "= ")))])
+      (when input (calc input respond)))))
+
+(let main-loop ()
+  (define line (get-line-crlf irc-input-port))
+  (unless (eof-object? line)
+    (guard (e [else (display-exception e (current-error-port))])
+      (unless (string=? "" line)
+        (process (parse-message line))))
+    (main-loop)))

plugins/zyklonb/factoids

@@ -0,0 +1,177 @@
+#!/usr/bin/env perl
+#
+# ZyklonB factoids plugin
+#
+# Copyright 2016 Přemysl Janouch <p@janouch.name>
+# See the file LICENSE for licensing information.
+#
+
+use strict;
+use warnings;
+use Text::Wrap;
+
+# --- IRC protocol -------------------------------------------------------------
+
+binmode STDIN;  select STDIN;  $| = 1; $/ = "\r\n";
+binmode STDOUT; select STDOUT; $| = 1; $\ = "\r\n";
+
+sub parse ($) {
+	chomp (my $line = shift);
+	return undef unless my ($nick, $user, $host, $command, $args) = ($line =~
+		qr/^(?::([^! ]*)(?:!([^@]*)@([^ ]*))? +)?([^ ]+)(?: +(.*))?$/o);
+	return {nick => $nick, user => $user, host => $host, command => $command,
+		args => defined $args ? [$args =~ /:?((?<=:).*|[^ ]+) */og] : []};
+}
+
+sub bot_print {
+	print "ZYKLONB print :${\shift}";
+}
+
+# --- Initialization -----------------------------------------------------------
+
+my %config;
+for my $name (qw(prefix)) {
+	print "ZYKLONB get_config :$name";
+	$config{$name} = (parse <STDIN>)->{args}->[0];
+}
+
+print "ZYKLONB register";
+
+# --- Database -----------------------------------------------------------------
+# Simple map of (factoid_name => [definitions]); all factoids are separated
+# by newlines and definitions by carriage returns.  Both disallowed in IRC.
+
+sub db_load {
+	local $/ = "\n";
+	my ($path) = @_;
+	open my $db, "<", $path or return {};
+
+	my %entries;
+	while (<$db>) {
+		chomp;
+		my @defs = split "\r";
+		$entries{shift @defs} = \@defs;
+	}
+	\%entries
+}
+
+sub db_save {
+	local $\ = "\n";
+	my ($path, $ref) = @_;
+	my $path_new = "$path.new";
+	open my $db, ">", $path_new or die "db save failed: $!";
+
+	my %entries = %$ref;
+	print $db join "\r", ($_, @{$entries{$_}}) for keys %entries;
+	close $db;
+	rename $path_new, $path or die "db save failed: $!";
+}
+
+# --- Factoids -----------------------------------------------------------------
+
+my $db_path = 'factoids.db';
+my %db = %{db_load $db_path};
+
+sub learn {
+	my ($respond, $input) = @_;
+	return &$respond("usage: <name> = <definition>")
+		unless $input =~ /^([^=]+?)(?:\s+(\d+))?\s*=\s*(.+?)\s*$/;
+
+	my ($name, $number, $definition) = ($1, $2, $3);
+	return &$respond("trailing numbers in names are disallowed")
+		if defined $2;
+	$db{$name} = [] unless exists $db{$name};
+
+	my $entries = $db{$name};
+	return &$respond("duplicate definition")
+		if grep { lc $_ eq lc $definition } @$entries;
+
+	push @$entries, $definition;
+	&$respond("saved as #${\scalar @$entries}");
+	db_save $db_path, \%db;
+}
+
+sub check_number {
+	my ($respond, $name, $number) = @_;
+	my $entries = $db{$name};
+	if ($number > @$entries) {
+		&$respond(qq/"$name" has only ${\scalar @$entries} definitions/);
+	} elsif (not $number) {
+		&$respond("number must not be zero");
+	} else {
+		return 1;
+	}
+	return 0;
+}
+
+sub forget {
+	my ($respond, $input) = @_;
+	return &$respond("usage: <name> <number>")
+		unless $input =~ /^([^=]+?)\s+(\d+)\s*$/;
+
+	my ($name, $number) = ($1, int($2));
+	return &$respond(qq/"$name" is undefined/)
+		unless exists $db{$name};
+
+	my $entries = $db{$name};
+	return unless check_number $respond, $name, $number;
+
+	splice @$entries, --$number, 1;
+	&$respond("forgotten");
+	db_save $db_path, \%db;
+}
+
+sub whatis {
+	my ($respond, $input) = @_;
+	return &$respond("usage: <name> [<number>]")
+		unless $input =~ /^([^=]+?)(?:\s+(\d+))?\s*$/;
+
+	my ($name, $number) = ($1, $2);
+	return &$respond(qq/"$name" is undefined/)
+		unless exists $db{$name};
+
+	my $entries = $db{$name};
+	if (defined $number) {
+		return unless check_number $respond, $name, $number;
+		&$respond(qq/"$name" is #$number $entries->[$number - 1]/);
+	} else {
+		my $i = 1;
+		my $definition = join ", ", map { "#${\$i++} $_" } @{$entries};
+		&$respond(qq/"$name" is $definition/);
+	}
+}
+
+sub wildcard {
+	my ($respond, $input) = @_;
+	$input =~ /=/ ? learn(@_) : whatis(@_);
+}
+
+my %commands = (
+	'learn'  => \&learn,
+	'forget' => \&forget,
+	'whatis' => \&whatis,
+	'??'     => \&wildcard,
+);
+
+# --- Input loop ---------------------------------------------------------------
+
+while (my $line = <STDIN>) {
+	my %msg = %{parse $line};
+	my @args = @{$msg{args}};
+
+	# This plugin only bothers to respond to PRIVMSG messages
+	next unless $msg{command} eq 'PRIVMSG' and @args >= 2
+		and my ($cmd, $input) = $args[1] =~ /^$config{prefix}(\S+)\s*(.*)/;
+
+	# So far the only reaction is a PRIVMSG back to the sender, so all the
+	# handlers need is a response callback and all arguments to the command
+	my ($target => $quote) = ($args[0] =~ /^[#+&!]/)
+		? ($args[0] => "$msg{nick}: ") : ($msg{nick} => '');
+	# Wrap all responses so that there's space for our prefix in the message
+	my $respond = sub {
+		local ($Text::Wrap::columns, $Text::Wrap::unexpand) = 400, 0;
+		my $start = "PRIVMSG $target :$quote";
+		print for split "\n", wrap $start, $start, shift;
+	};
+	&{$commands{$cmd}}($respond, $input) if exists($commands{$cmd});
+}

plugins/zyklonb/seen

@@ -0,0 +1,160 @@
+#!/usr/bin/env lua
+--
+-- ZyklonB seen plugin
+--
+-- Copyright 2016 Přemysl Janouch <p@janouch.name>
+-- See the file LICENSE for licensing information.
+--
+
+function parse (line)
+	local msg = { params = {} }
+	line = line:match ("[^\r]*")
+	for start, word in line:gmatch ("()([^ ]+)") do
+		local colon = word:match ("^:(.*)")
+		if start == 1 and colon then
+			msg.prefix = colon
+		elseif not msg.command then
+			msg.command = word
+		elseif colon then
+			table.insert (msg.params, line:sub (start + 1))
+			break
+		elseif start ~= #line then
+			table.insert (msg.params, word)
+		end
+	end
+	return msg
+end
+
+function get_config (name)
+	io.write ("ZYKLONB get_config :", name, "\r\n")
+	return parse (io.read ()).params[1]
+end
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+io.output ():setvbuf ('line')
+local prefix = get_config ('prefix')
+io.write ("ZYKLONB register\r\n")
+
+local db = {}
+local db_filename = "seen.db"
+local db_garbage = 0
+
+function remember (who, where, when, what)
+	if not db[who] then db[who] = {} end
+	if db[who][where] then db_garbage = db_garbage + 1 end
+	db[who][where] = { tonumber (when), what }
+end
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+local db_file, e = io.open (db_filename, "a+")
+if not db_file then error ("cannot open database: " .. e, 0) end
+
+function db_store (who, where, when, what)
+	db_file:write (string.format
+		(":%s %s %s %s :%s\n", who, "PRIVMSG", where, when, what))
+end
+
+function db_compact ()
+	db_file:close ()
+
+	-- Unfortunately, default Lua doesn't have anything like mkstemp()
+	local db_tmpname = db_filename .. "." .. os.time ()
+	db_file, e = io.open (db_tmpname, "a+")
+	if not db_file then error ("cannot save database: " .. e, 0) end
+
+	for who, places in pairs (db) do
+		for where, data in pairs (places) do
+			db_store (who, where, data[1], data[2])
+		end
+	end
+	db_file:flush ()
+
+	local ok, e = os.rename (db_tmpname, db_filename)
+	if not ok then error ("cannot save database: " .. e, 0) end
+	db_garbage = 0
+end
+
+for line in db_file:lines () do
+	local msg = parse (line)
+	remember (msg.prefix, table.unpack (msg.params))
+end
+
+-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+function seen (who, where, args)
+	local respond = function (...)
+		local privmsg = function (target, ...)
+			io.write ("PRIVMSG ", target, " :", table.concat { ... }, "\r\n")
+		end
+		if where:match ("^[#&!+]") then
+			privmsg (where, who, ": ", ...)
+		else
+			privmsg (who, ...)
+		end
+	end
+
+	local whom, e, garbage = args:match ("^(%S+)()%s*(.*)")
+	if not whom or #garbage ~= 0 then
+		return respond ("usage: <name>")
+	elseif who:lower () == whom:lower () then
+		return respond ("I can see you right now.")
+	end
+
+	local top = {}
+	-- That is, * acts like a wildcard, otherwise everything is escaped
+	local pattern = "^" .. whom:gsub ("[%^%$%(%)%%%.%[%]%+%-%?]", "%%%0")
+		:gsub ("%*", ".*"):lower () .. "$"
+	for name, places in pairs (db) do
+		if places[where] and name:lower ():match (pattern) then
+			local when, what = table.unpack (places[where])
+			table.insert (top, { name = name, when = when, what = what })
+		end
+	end
+	if #top == 0 then
+		return respond ("I have not seen \x02" .. whom .. "\x02 here.")
+	end
+
+	-- Get all matching nicknames ordered from the most recently active
+	-- and make the list case insensitive (remove older duplicates)
+	table.sort (top, function (a, b) return a.when > b.when end)
+	for i = #top, 2, -1 do
+		if top[i - 1].name:lower () == top[i].name:lower () then
+			table.remove (top, i)
+		end
+	end
+
+	-- Hopefully the formatting mess will disrupt highlights in clients
+	for i = 1, math.min (#top, 3) do
+		local name = top[i].name:gsub ("^.", "%0\x02\x02")
+		respond (string.format ("\x02%s\x02 -> %s -> %s",
+			name, os.date ("%c", top[i].when), top[i].what))
+	end
+end
+
+function handle (msg)
+	local who = msg.prefix:match ("^[^!@]*")
+	local where, what = table.unpack (msg.params)
+	local when = os.time ()
+
+	local what_log = what:gsub ("^\x01ACTION", "*"):gsub ("\x01$", "")
+	remember (who, where, when, what_log)
+	db_store (who, where, when, what_log)
+
+	-- Comment out to reduce both disk load and reliability
+	db_file:flush ()
+
+	if db_garbage > 5000 then db_compact () end
+
+	if what:sub (1, #prefix) == prefix then
+		local command = what:sub (#prefix + 1)
+		local name, e = command:match ("^(%S+)%s*()")
+		if name == 'seen' then seen (who, where, command:sub (e)) end
+	end
+end
+
+for line in io.lines () do
+	local msg = parse (line)
+	if msg.command == "PRIVMSG" then handle (msg) end
+end

plugins/zyklonb/seen-import-degesch.pl

@@ -0,0 +1,39 @@
+#!/usr/bin/env perl
+# Creates a database for the "seen" plugin from logs for degesch.
+# The results may not be completely accurate but are good for jumpstarting.
+# Usage: ./seen-import-degesch.pl LOG-FILE... > seen.db
+
+use strict;
+use warnings;
+use File::Basename;
+use Time::Piece;
+
+my $db = {};
+for (@ARGV) {
+	my $where = (basename($_) =~ /\.(.*).log/)[0];
+	unless ($where) {
+		print STDERR "Invalid filename: $_\n";
+		next;
+	}
+
+	open my $fh, '<', $_ or die "Failed to open log file: $!";
+	while (<$fh>) {
+		my ($when, $who, $who_action, $what) =
+			/^(.{19}) (?:<[~&@%+]*(.*?)>| \*  (\S+)) (.*)/;
+		next unless $when;
+
+		if ($who_action) {
+			$who = $who_action;
+			$what = "* $what";
+		}
+		$db->{$who}->{$where} =
+			[Time::Piece->strptime($when, "%Y-%m-%d %T")->epoch, $what];
+	}
+}
+
+while (my ($who, $places) = each %$db) {
+	while (my ($where, $data) = each %$places) {
+		my ($when, $what) = @$data;
+		print ":$who PRIVMSG $where $when :$what\n";
+	}
+}

plugins/zyklonb/youtube

@@ -2,7 +2,7 @@
 #
 # ZyklonB YouTube plugin, displaying info about YouTube links
 #
-# Copyright 2014 - 2015, Přemysl Janouch <p.janouch@gmail.com>
+# Copyright 2014 - 2015, Přemysl Janouch <p@janouch.name>
 # See the file LICENSE for licensing information.
 #
 

test-static

@@ -0,0 +1,14 @@
+#!/bin/sh
+# We don't use printf's percent notation with our custom logging mechanism,
+# so the compiler cannot check it for us like it usually does
+perl -n0777 - "$(dirname "$0")"/degesch.c <<-'END'
+	while (/\blog_[^ ]+\s*\([^"()]*"[^"]*%[^%][^"]*"/gm) {
+		my ($p, $m) = ($`, $&);
+		printf "$ARGV:%d: suspicious log format string: %s...\n",
+			(1 + $p =~ tr/\n//), ($m =~ s/\s+/ /rg);
+		$status = 1;
+	}
+	END {
+		exit $status;
+	}
+END

zyklonb.c

@@ -1,11 +1,10 @@
 /*
  * zyklonb.c: the experimental IRC bot
  *
- * Copyright (c) 2014 - 2015, Přemysl Janouch <p.janouch@gmail.com>
+ * Copyright (c) 2014 - 2016, Přemysl Janouch <p@janouch.name>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * purpose with or without fee is hereby granted.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
@@ -19,6 +18,7 @@
 
 #include "config.h"
 #define PROGRAM_NAME "ZyklonB"
+#define PLUGIN_DIR ZYKLONB_PLUGIN_DIR
 
 #include "common.c"
 
@@ -82,22 +82,22 @@ struct plugin
 	struct str write_buffer;            ///< Output yet to be sent out
 };
 
-static void
-plugin_init (struct plugin *self)
+static struct plugin *
+plugin_new (void)
 {
-	memset (self, 0, sizeof *self);
-
+	struct plugin *self = xcalloc (1, sizeof *self);
 	self->pid = -1;
-	str_init (&self->queued_output);
+	self->queued_output = str_make ();
 
 	self->read_fd = -1;
-	str_init (&self->read_buffer);
+	self->read_buffer = str_make ();
 	self->write_fd = -1;
-	str_init (&self->write_buffer);
+	self->write_buffer = str_make ();
+	return self;
 }
 
 static void
-plugin_free (struct plugin *self)
+plugin_destroy (struct plugin *self)
 {
 	soft_assert (self->pid == -1);
 	free (self->name);
@@ -112,6 +112,8 @@ plugin_free (struct plugin *self)
 
 	if (!self->initialized)
 		str_free (&self->queued_output);
+
+	free (self);
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -151,34 +153,33 @@ static void on_irc_reconnect_timeout (void *user_data);
 static void
 bot_context_init (struct bot_context *self)
 {
-	str_map_init (&self->config);
-	self->config.free = free;
+	self->config = str_map_make (free);
 	simple_config_load_defaults (&self->config, g_config_table);
 	self->admin_re = NULL;
 
 	self->irc_fd = -1;
-	str_init (&self->read_buffer);
+	self->read_buffer = str_make ();
 	self->irc_registered = false;
 
 	self->ssl = NULL;
 	self->ssl_ctx = NULL;
 
 	self->plugins = NULL;
-	str_map_init (&self->plugins_by_name);
+	self->plugins_by_name = str_map_make (NULL);
 
 	poller_init (&self->poller);
 	self->quitting = false;
 	self->polling = false;
 
-	poller_timer_init (&self->timeout_tmr, &self->poller);
+	self->timeout_tmr = poller_timer_make (&self->poller);
 	self->timeout_tmr.dispatcher = on_irc_timeout;
 	self->timeout_tmr.user_data = self;
 
-	poller_timer_init (&self->ping_tmr, &self->poller);
+	self->ping_tmr = poller_timer_make (&self->poller);
 	self->ping_tmr.dispatcher = on_irc_ping_timeout;
 	self->ping_tmr.user_data = self;
 
-	poller_timer_init (&self->reconnect_tmr, &self->poller);
+	self->reconnect_tmr = poller_timer_make (&self->poller);
 	self->reconnect_tmr.dispatcher = on_irc_reconnect_timeout;
 	self->reconnect_tmr.user_data = self;
 }
@@ -192,18 +193,13 @@ bot_context_free (struct bot_context *self)
 	str_free (&self->read_buffer);
 
 	// TODO: terminate the plugins properly before this is called
-	struct plugin *link, *tmp;
-	for (link = self->plugins; link; link = tmp)
-	{
-		tmp = link->next;
-		plugin_free (link);
-		free (link);
-	}
+	LIST_FOR_EACH (struct plugin, link, self->plugins)
+		plugin_destroy (link);
 
 	if (self->irc_fd != -1)
 	{
-		xclose (self->irc_fd);
 		poller_fd_reset (&self->irc_event);
+		xclose (self->irc_fd);
 	}
 	if (self->ssl)
 		SSL_free (self->ssl);
@@ -271,8 +267,7 @@ irc_send (struct bot_context *ctx, const char *format, ...)
 		return false;
 
 	va_start (ap, format);
-	struct str str;
-	str_init (&str);
+	struct str str = str_make ();
 	str_append_vprintf (&str, format, ap);
 	str_append (&str, "\r\n");
 	va_end (ap);
@@ -309,8 +304,54 @@ irc_get_boolean_from_config
 	if (set_boolean_if_valid (value, str))
 		return true;
 
-	error_set (e, "invalid configuration value for `%s'", name);
-	return false;
+	return error_set (e, "invalid configuration value for `%s'", name);
+}
+
+static bool
+irc_initialize_ca_set (SSL_CTX *ssl_ctx, const char *file, const char *path,
+	struct error **e)
+{
+	ERR_clear_error ();
+
+	if (file || path)
+	{
+		if (SSL_CTX_load_verify_locations (ssl_ctx, file, path))
+			return true;
+
+		return error_set (e, "%s: %s",
+			"failed to set locations for the CA certificate bundle",
+			ERR_reason_error_string (ERR_get_error ()));
+	}
+
+	if (!SSL_CTX_set_default_verify_paths (ssl_ctx))
+		return error_set (e, "%s: %s",
+			"couldn't load the default CA certificate bundle",
+			ERR_reason_error_string (ERR_get_error ()));
+	return true;
+}
+
+static bool
+irc_initialize_ca (struct bot_context *ctx, struct error **e)
+{
+	const char *ca_file = str_map_find (&ctx->config, "tls_ca_file");
+	const char *ca_path = str_map_find (&ctx->config, "tls_ca_path");
+
+	char *full_file = ca_file
+		? resolve_filename (ca_file, resolve_relative_config_filename) : NULL;
+	char *full_path = ca_path
+		? resolve_filename (ca_path, resolve_relative_config_filename) : NULL;
+
+	bool ok = false;
+	if      (ca_file && !full_file)
+		error_set (e, "couldn't find the CA bundle file");
+	else if (ca_path && !full_path)
+		error_set (e, "couldn't find the CA bundle path");
+	else
+		ok = irc_initialize_ca_set (ctx->ssl_ctx, full_file, full_path, e);
+
+	free (full_file);
+	free (full_path);
+	return ok;
 }
 
 static bool
@@ -325,40 +366,19 @@ irc_initialize_ssl_ctx (struct bot_context *ctx, struct error **e)
 	SSL_CTX_set_verify (ctx->ssl_ctx,
 		verify ? SSL_VERIFY_PEER : SSL_VERIFY_NONE, NULL);
 
-	const char *ca_file = str_map_find (&ctx->config, "ca_file");
-	const char *ca_path = str_map_find (&ctx->config, "ca_path");
-
 	struct error *error = NULL;
-	if (ca_file || ca_path)
+	if (!irc_initialize_ca (ctx, &error))
 	{
-		if (SSL_CTX_load_verify_locations (ctx->ssl_ctx, ca_file, ca_path))
-			return true;
+		if (verify)
+		{
+			error_propagate (e, error);
+			return false;
+		}
 
-		error_set (&error, "%s: %s",
-			"failed to set locations for the CA certificate bundle",
-			ERR_reason_error_string (ERR_get_error ()));
-		goto ca_error;
+		// Only inform the user if we're not actually verifying
+		print_warning ("%s", error->message);
+		error_free (error);
 	}
-
-	if (!SSL_CTX_set_default_verify_paths (ctx->ssl_ctx))
-	{
-		error_set (&error, "%s: %s",
-			"couldn't load the default CA certificate bundle",
-			ERR_reason_error_string (ERR_get_error ()));
-		goto ca_error;
-	}
-	return true;
-
-ca_error:
-	if (verify)
-	{
-		error_propagate (e, error);
-		return false;
-	}
-
-	// Only inform the user if we're not actually verifying
-	print_warning ("%s", error->message);
-	error_free (error);
 	return true;
 }
 
@@ -418,8 +438,7 @@ error_ssl_1:
 	//   multiple errors on the OpenSSL stack.
 	if (!error_info)
 		error_info = ERR_error_string (ERR_get_error (), NULL);
-	error_set (e, "%s: %s", "could not initialize TLS", error_info);
-	return false;
+	return error_set (e, "%s: %s", "could not initialize TLS", error_info);
 }
 
 static bool
@@ -432,11 +451,8 @@ irc_establish_connection (struct bot_context *ctx,
 
 	int err = getaddrinfo (host, port, &gai_hints, &gai_result);
 	if (err)
-	{
-		error_set (e, "%s: %s: %s",
-			"connection failed", "getaddrinfo", gai_strerror (err));
-		return false;
-	}
+		return error_set (e, "%s: %s: %s", "connection failed",
+			"getaddrinfo", gai_strerror (err));
 
 	int sockfd;
 	for (gai_iter = gai_result; gai_iter; gai_iter = gai_iter->ai_next)
@@ -477,10 +493,7 @@ irc_establish_connection (struct bot_context *ctx,
 	freeaddrinfo (gai_result);
 
 	if (!gai_iter)
-	{
-		error_set (e, "connection failed");
-		return false;
-	}
+		return error_set (e, "connection failed");
 
 	ctx->irc_fd = sockfd;
 	return true;
@@ -490,7 +503,7 @@ irc_establish_connection (struct bot_context *ctx,
 
 static int g_signal_pipe[2];            ///< A pipe used to signal... signals
 
-static struct str_vector
+static struct strv
 	g_original_argv,                    ///< Original program arguments
 	g_recovery_env;                     ///< Environment for re-exec recovery
 
@@ -635,6 +648,9 @@ recovery_handler (int signum, siginfo_t *info, void *context)
 			"signal received", signal_name);
 	*g_startup_reason_location = buf;
 
+	// Avoid annoying resource intensive infinite loops by sleeping for a bit
+	(void) sleep (1);
+
 	// TODO: maybe pregenerate the path, see the following for some other ways
 	//   that would be illegal to do from within a signal handler:
 	//     http://stackoverflow.com/a/1024937
@@ -662,8 +678,8 @@ recovery_handler (int signum, siginfo_t *info, void *context)
 static void
 prepare_recovery_environment (void)
 {
-	str_vector_init (&g_recovery_env);
-	str_vector_add_vector (&g_recovery_env, environ);
+	g_recovery_env = strv_make ();
+	strv_append_vector (&g_recovery_env, environ);
 
 	// Prepare a location within the environment where we will put the startup
 	// (or maybe rather restart) reason in case of an irrecoverable error.
@@ -680,7 +696,7 @@ prepare_recovery_environment (void)
 	else
 	{
 		g_startup_reason_location = g_recovery_env.vector + g_recovery_env.len;
-		str_vector_add (&g_recovery_env, "");
+		strv_append (&g_recovery_env, "");
 	}
 }
 
@@ -942,7 +958,7 @@ on_plugin_readable (const struct pollfd *fd, struct plugin *plugin)
 	struct str *buf = &plugin->read_buffer;
 	while (true)
 	{
-		str_ensure_space (buf, 512 + 1);
+		str_reserve (buf, 512 + 1);
 		ssize_t n_read = read (fd->fd, buf->str + buf->len,
 			buf->alloc - buf->len - 1);
 
@@ -1001,101 +1017,122 @@ is_valid_plugin_name (const char *name)
 	return true;
 }
 
-static bool
-plugin_load (struct bot_context *ctx, const char *name, struct error **e)
+static struct plugin *
+plugin_launch (struct bot_context *ctx, const char *name, struct error **e)
 {
 	const char *plugin_dir = str_map_find (&ctx->config, "plugin_dir");
 	if (!plugin_dir)
 	{
 		error_set (e, "plugin directory not set");
-		return false;
-	}
-
-	if (!is_valid_plugin_name (name))
-	{
-		error_set (e, "invalid plugin name");
-		return false;
-	}
-
-	if (str_map_find (&ctx->plugins_by_name, name))
-	{
-		error_set (e, "the plugin has already been loaded");
-		return false;
+		return NULL;
 	}
 
 	int stdin_pipe[2];
 	if (pipe (stdin_pipe) == -1)
 	{
-		error_set (e, "%s: %s: %s",
-			"failed to load the plugin", "pipe", strerror (errno));
-		goto fail_1;
+		error_set (e, "%s: %s", "pipe", strerror (errno));
+		return NULL;
 	}
 
 	int stdout_pipe[2];
 	if (pipe (stdout_pipe) == -1)
 	{
-		error_set (e, "%s: %s: %s",
-			"failed to load the plugin", "pipe", strerror (errno));
-		goto fail_2;
+		error_set (e, "%s: %s", "pipe", strerror (errno));
+		goto fail_1;
 	}
 
+	struct str work_dir = str_make ();
+	get_xdg_home_dir (&work_dir, "XDG_DATA_HOME", ".local/share");
+	str_append_printf (&work_dir, "/%s", PROGRAM_NAME);
+
+	if (!mkdir_with_parents (work_dir.str, e))
+		goto fail_2;
+
 	set_cloexec (stdin_pipe[1]);
 	set_cloexec (stdout_pipe[0]);
 
 	pid_t pid = fork ();
 	if (pid == -1)
 	{
-		error_set (e, "%s: %s: %s",
-			"failed to load the plugin", "fork", strerror (errno));
-		goto fail_3;
+		error_set (e, "%s: %s", "fork", strerror (errno));
+		goto fail_2;
 	}
 
 	if (pid == 0)
 	{
 		// Redirect the child's stdin and stdout to the pipes
-		hard_assert (dup2 (stdin_pipe[0],  STDIN_FILENO)  != -1);
-		hard_assert (dup2 (stdout_pipe[1], STDOUT_FILENO) != -1);
+		if (dup2 (stdin_pipe[0], STDIN_FILENO) == -1
+		 || dup2 (stdout_pipe[1], STDOUT_FILENO) == -1)
+		{
+			print_error ("%s: %s: %s", "failed to load the plugin",
+				"dup2", strerror (errno));
+			_exit (EXIT_FAILURE);
+		}
+		if (chdir (work_dir.str))
+		{
+			print_error ("%s: %s: %s", "failed to load the plugin",
+				"chdir", strerror (errno));
+			_exit (EXIT_FAILURE);
+		}
 
 		xclose (stdin_pipe[0]);
 		xclose (stdout_pipe[1]);
 
-		struct str pathname;
-		str_init (&pathname);
-		str_append (&pathname, plugin_dir);
-		str_append_c (&pathname, '/');
-		str_append (&pathname, name);
-
 		// Restore some of the signal handling
 		signal (SIGPIPE, SIG_DFL);
 
-		char *const argv[] = { pathname.str, NULL };
+		char *argv[] = { xstrdup_printf ("%s/%s", plugin_dir, name), NULL };
 		execve (argv[0], argv, environ);
 
 		// We will collect the failure later via SIGCHLD
-		print_error ("%s: %s: %s",
-			"failed to load the plugin", "exec", strerror (errno));
+		print_error ("%s: %s: %s", "failed to load the plugin",
+			"exec", strerror (errno));
 		_exit (EXIT_FAILURE);
 	}
 
+	str_free (&work_dir);
+
 	xclose (stdin_pipe[0]);
 	xclose (stdout_pipe[1]);
 
-	set_blocking (stdout_pipe[0], false);
-	set_blocking (stdin_pipe[1], false);
-
-	struct plugin *plugin = xmalloc (sizeof *plugin);
-	plugin_init (plugin);
+	struct plugin *plugin = plugin_new ();
 	plugin->ctx = ctx;
 	plugin->pid = pid;
 	plugin->name = xstrdup (name);
 	plugin->read_fd = stdout_pipe[0];
 	plugin->write_fd = stdin_pipe[1];
+	return plugin;
 
-	poller_fd_init (&plugin->read_event, &ctx->poller, plugin->read_fd);
+fail_2:
+	str_free (&work_dir);
+	xclose (stdout_pipe[0]);
+	xclose (stdout_pipe[1]);
+fail_1:
+	xclose (stdin_pipe[0]);
+	xclose (stdin_pipe[1]);
+	return NULL;
+}
+
+static bool
+plugin_load (struct bot_context *ctx, const char *name, struct error **e)
+{
+	if (!is_valid_plugin_name (name))
+		return error_set (e, "invalid plugin name");
+	if (str_map_find (&ctx->plugins_by_name, name))
+		return error_set (e, "the plugin has already been loaded");
+
+	struct plugin *plugin;
+	if (!(plugin = plugin_launch (ctx, name, e)))
+		return false;
+
+	set_blocking (plugin->read_fd, false);
+	set_blocking (plugin->write_fd, false);
+
+	plugin->read_event = poller_fd_make (&ctx->poller, plugin->read_fd);
 	plugin->read_event.dispatcher = (poller_fd_fn) on_plugin_readable;
 	plugin->read_event.user_data = plugin;
 
-	poller_fd_init (&plugin->write_event, &ctx->poller, plugin->write_fd);
+	plugin->write_event = poller_fd_make (&ctx->poller, plugin->write_fd);
 	plugin->write_event.dispatcher = (poller_fd_fn) on_plugin_writable;
 	plugin->write_event.user_data = plugin;
 
@@ -1104,15 +1141,6 @@ plugin_load (struct bot_context *ctx, const char *name, struct error **e)
 
 	poller_fd_set (&plugin->read_event, POLLIN);
 	return true;
-
-fail_3:
-	xclose (stdout_pipe[0]);
-	xclose (stdout_pipe[1]);
-fail_2:
-	xclose (stdin_pipe[0]);
-	xclose (stdin_pipe[1]);
-fail_1:
-	return false;
 }
 
 static bool
@@ -1121,10 +1149,7 @@ plugin_unload (struct bot_context *ctx, const char *name, struct error **e)
 	struct plugin *plugin = str_map_find (&ctx->plugins_by_name, name);
 
 	if (!plugin)
-	{
-		error_set (e, "no such plugin is loaded");
-		return false;
-	}
+		return error_set (e, "no such plugin is loaded");
 
 	plugin_zombify (plugin);
 
@@ -1140,10 +1165,8 @@ plugin_load_all_from_config (struct bot_context *ctx)
 	if (!plugin_list)
 		return;
 
-	struct str_vector plugins;
-	str_vector_init (&plugins);
-
-	cstr_split_ignore_empty (plugin_list, ',', &plugins);
+	struct strv plugins = strv_make ();
+	cstr_split (plugin_list, ",", true, &plugins);
 	for (size_t i = 0; i < plugins.len; i++)
 	{
 		char *name = cstr_strip_in_place (plugins.vector[i], " ");
@@ -1156,7 +1179,7 @@ plugin_load_all_from_config (struct bot_context *ctx)
 		}
 	}
 
-	str_vector_free (&plugins);
+	strv_free (&plugins);
 }
 
 // --- Main program ------------------------------------------------------------
@@ -1181,13 +1204,13 @@ parse_bot_command (const char *s, const char *command, const char **following)
 }
 
 static void
-split_bot_command_argument_list (const char *arguments, struct str_vector *out)
+split_bot_command_argument_list (const char *arguments, struct strv *out)
 {
-	cstr_split_ignore_empty (arguments, ',', out);
+	cstr_split (arguments, ",", true, out);
 	for (size_t i = 0; i < out->len; )
 	{
 		if (!*cstr_strip_in_place (out->vector[i], " \t"))
-			str_vector_remove (out, i);
+			strv_remove (out, i);
 		else
 			i++;
 	}
@@ -1223,10 +1246,8 @@ respond_to_user (struct bot_context *ctx, const struct irc_message *msg,
 	strncpy (nick, msg->prefix, sizeof nick - 1);
 	nick[sizeof nick - 1] = '\0';
 
-	struct str text;
 	va_list ap;
-
-	str_init (&text);
+	struct str text = str_make ();
 	va_start (ap, format);
 	str_append_vprintf (&text, format, ap);
 	va_end (ap);
@@ -1287,9 +1308,7 @@ process_plugin_reload (struct bot_context *ctx,
 static char *
 make_status_report (struct bot_context *ctx)
 {
-	struct str report;
-	str_init (&report);
-
+	struct str report = str_make ();
 	const char *reason = getenv (g_startup_reason_str);
 	if (!reason)
 		reason = "launched normally";
@@ -1334,8 +1353,7 @@ process_privmsg (struct bot_context *ctx, const struct irc_message *msg)
 		return;
 
 	const char *following;
-	struct str_vector list;
-	str_vector_init (&list);
+	struct strv list = strv_make ();
 
 	if (parse_bot_command (text, "quote", &following))
 		// This seems to replace tons of random stupid commands
@@ -1375,7 +1393,7 @@ process_privmsg (struct bot_context *ctx, const struct irc_message *msg)
 			process_plugin_unload (ctx, msg, list.vector[i]);
 	}
 
-	str_vector_free (&list);
+	strv_free (&list);
 }
 
 static void
@@ -1552,13 +1570,11 @@ on_irc_disconnected (struct bot_context *ctx)
 		ctx->ssl_ctx = NULL;
 	}
 
+	poller_fd_reset (&ctx->irc_event);
 	xclose (ctx->irc_fd);
 	ctx->irc_fd = -1;
 	ctx->irc_registered = false;
 
-	ctx->irc_event.closed = true;
-	poller_fd_reset (&ctx->irc_event);
-
 	// TODO: inform plugins about the disconnect event
 
 	// All of our timers have lost their meaning now
@@ -1613,7 +1629,7 @@ on_irc_readable (const struct pollfd *fd, struct bot_context *ctx)
 	bool disconnected = false;
 	while (true)
 	{
-		str_ensure_space (buf, 512);
+		str_reserve (buf, 512);
 		switch (fill_buffer (ctx, buf))
 		{
 		case IRC_READ_AGAIN:
@@ -1662,8 +1678,10 @@ struct irc_socks_data
 };
 
 static void
-irc_on_socks_connected (void *user_data, int socket)
+irc_on_socks_connected (void *user_data, int socket, const char *hostname)
 {
+	(void) hostname;
+
 	struct irc_socks_data *data = user_data;
 	data->ctx->irc_fd = socket;
 	data->succeeded = true;
@@ -1721,6 +1739,8 @@ irc_establish_connection_socks (struct bot_context *ctx,
 			str_map_find (&ctx->config, "socks_password"));
 		while (data.polling)
 			poller_run (poller);
+		if (!data.succeeded)
+			error_set (e, "connection failed");
 	}
 
 	socks_connector_free (connector);
@@ -1749,10 +1769,7 @@ irc_connect (struct bot_context *ctx, struct error **e)
 	// TODO: again, get rid of `struct error' in here.  The question is: how
 	//   do we tell our caller that he should not try to reconnect?
 	if (!irc_host)
-	{
-		error_set (e, "no hostname specified in configuration");
-		return false;
-	}
+		return error_set (e, "no hostname specified in configuration");
 
 	bool use_tls;
 	if (!irc_get_boolean_from_config (ctx, "tls", &use_tls, e))
@@ -1773,7 +1790,7 @@ irc_connect (struct bot_context *ctx, struct error **e)
 	}
 	print_status ("connection established");
 
-	poller_fd_init (&ctx->irc_event, &ctx->poller, ctx->irc_fd);
+	ctx->irc_event = poller_fd_make (&ctx->poller, ctx->irc_fd);
 	ctx->irc_event.dispatcher = (poller_fd_fn) on_irc_readable;
 	ctx->irc_event.user_data = ctx;
 
@@ -1798,9 +1815,8 @@ parse_config (struct bot_context *ctx, struct error **e)
 	hard_assert (delay_str != NULL);  // We have a default value for this
 	if (!xstrtoul (&ctx->reconnect_delay, delay_str, 10))
 	{
-		error_set (e, "invalid configuration value for `%s'",
-			"reconnect_delay");
-		return false;
+		return error_set (e,
+			"invalid configuration value for `%s'", "reconnect_delay");
 	}
 
 	hard_assert (!ctx->admin_re);
@@ -1855,8 +1871,7 @@ on_plugin_death (struct plugin *plugin, int status)
 	plugin->read_fd = -1;
 
 	LIST_UNLINK (ctx->plugins, plugin);
-	plugin_free (plugin);
-	free (plugin);
+	plugin_destroy (plugin);
 
 	// Living child processes block us from quitting
 	try_finish_quit (ctx);
@@ -1934,8 +1949,8 @@ on_signal_pipe_readable (const struct pollfd *fd, struct bot_context *ctx)
 int
 main (int argc, char *argv[])
 {
-	str_vector_init (&g_original_argv);
-	str_vector_add_vector (&g_original_argv, argv);
+	g_original_argv = strv_make ();
+	strv_append_vector (&g_original_argv, argv);
 
 	static const struct opt opts[] =
 	{
@@ -1948,8 +1963,8 @@ main (int argc, char *argv[])
 		{ 0, NULL, NULL, 0, NULL }
 	};
 
-	struct opt_handler oh;
-	opt_handler_init (&oh, argc, argv, opts, NULL, "Experimental IRC bot.");
+	struct opt_handler oh =
+		opt_handler_make (argc, argv, opts, NULL, "Experimental IRC bot.");
 
 	int c;
 	while ((c = opt_handler_get (&oh)) != -1)
@@ -1977,12 +1992,7 @@ main (int argc, char *argv[])
 
 	print_status (PROGRAM_NAME " " PROGRAM_VERSION " starting");
 	setup_signal_handlers ();
-
-	SSL_library_init ();
-	atexit (EVP_cleanup);
-	SSL_load_error_strings ();
-	// XXX: ERR_load_BIO_strings()?  Anything else?
-	atexit (ERR_free_strings);
+	init_openssl ();
 
 	struct bot_context ctx;
 	bot_context_init (&ctx);
@@ -1996,11 +2006,17 @@ main (int argc, char *argv[])
 		exit (EXIT_FAILURE);
 	}
 
-	poller_fd_init (&ctx.signal_event, &ctx.poller, g_signal_pipe[0]);
+	ctx.signal_event = poller_fd_make (&ctx.poller, g_signal_pipe[0]);
 	ctx.signal_event.dispatcher = (poller_fd_fn) on_signal_pipe_readable;
 	ctx.signal_event.user_data = &ctx;
 	poller_fd_set (&ctx.signal_event, POLLIN);
 
+#if OpenBSD >= 201605
+	// cpath is for creating the plugin home directory
+	if (pledge ("stdio rpath cpath inet proc exec", NULL))
+		exit_fatal ("%s: %s", "pledge", strerror (errno));
+#endif
+
 	plugin_load_all_from_config (&ctx);
 	if (!parse_config (&ctx, &e)
 	 || !irc_connect (&ctx, &e))
@@ -2022,7 +2038,7 @@ main (int argc, char *argv[])
 		poller_run (&ctx.poller);
 
 	bot_context_free (&ctx);
-	str_vector_free (&g_original_argv);
+	strv_free (&g_original_argv);
 	return EXIT_SUCCESS;
 }