initial commit

.gitea

@@ -0,0 +1,15 @@
+[submodule "sub/argoat"]
+	path = sub/argoat
+	url = https://git.cylgom.net/cylgom/argoat.git
+[submodule "sub/configator"]
+	path = sub/configator
+	url = https://git.cylgom.net/cylgom/configator.git
+[submodule "sub/ctypes"]
+	path = sub/ctypes
+	url = https://git.cylgom.net/cylgom/ctypes.git
+[submodule "sub/dragonfail"]
+	path = sub/dragonfail
+	url = https://git.cylgom.net/cylgom/dragonfail.git
+[submodule "sub/termbox_next"]
+	path = sub/termbox_next
+	url = https://git.cylgom.net/cylgom/termbox_next.git

.github

@@ -0,0 +1,15 @@
+[submodule "sub/argoat"]
+	path = sub/argoat
+	url = https://github.com/cylgom/argoat.git
+[submodule "sub/configator"]
+	path = sub/configator
+	url = https://github.com/cylgom/configator.git
+[submodule "sub/ctypes"]
+	path = sub/ctypes
+	url = https://github.com/cylgom/ctypes.git
+[submodule "sub/dragonfail"]
+	path = sub/dragonfail
+	url = https://github.com/cylgom/dragonfail.git
+[submodule "sub/termbox_next"]
+	path = sub/termbox_next
+	url = https://github.com/cylgom/termbox_next.git

.gitignore

@@ -0,0 +1,4 @@
+bin
+obj
+.gitmodules
+valgrind.log

license.md

@@ -0,0 +1,13 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.

makefile

@@ -0,0 +1,105 @@
+NAME = ly
+CC = gcc
+FLAGS = -std=c99 -pedantic -g
+FLAGS+= -Wall -Wno-unused-parameter -Wextra -Werror=vla -Werror
+#FLAGS+= -DDEBUG
+FLAGS+= -DGIT_VERSION_STRING=\"$(shell git describe --long --tags | sed 's/\([^-]*-g\)/r\1/;s/-/./g')\"
+LINK = -lpam -lxcb
+VALGRIND = --show-leak-kinds=all --track-origins=yes --leak-check=full --suppressions=../res/valgrind.supp
+CMD = ./$(NAME)
+
+OS:= $(shell uname -s)
+ifeq ($(OS), Linux)
+	FLAGS+= -D_DEFAULT_SOURCE
+endif
+
+BIND = bin
+OBJD = obj
+SRCD = src
+SUBD = sub
+RESD = res
+TESTD = tests
+
+INCL = -I$(SRCD)
+INCL+= -I$(SUBD)/ctypes
+INCL+= -I$(SUBD)/argoat/src
+INCL+= -I$(SUBD)/configator/src
+INCL+= -I$(SUBD)/dragonfail/src
+INCL+= -I$(SUBD)/termbox_next/src
+
+SRCS = $(SRCD)/main.c
+SRCS += $(SRCD)/config.c
+SRCS += $(SRCD)/draw.c
+SRCS += $(SRCD)/inputs.c
+SRCS += $(SRCD)/login.c
+SRCS += $(SRCD)/utils.c
+SRCS += $(SUBD)/argoat/src/argoat.c
+SRCS += $(SUBD)/configator/src/configator.c
+SRCS += $(SUBD)/dragonfail/src/dragonfail.c
+
+SRCS_OBJS:= $(patsubst %.c,$(OBJD)/%.o,$(SRCS))
+SRCS_OBJS+= $(SUBD)/termbox_next/bin/termbox.a
+
+.PHONY: final
+final: $(BIND)/$(NAME)
+
+$(OBJD)/%.o: %.c
+	@echo "building object $@"
+	@mkdir -p $(@D)
+	@$(CC) $(INCL) $(FLAGS) -c -o $@ $<
+
+$(SUBD)/termbox_next/bin/termbox.a:
+	@echo "building static object $@"
+	@(cd $(SUBD)/termbox_next && $(MAKE))
+
+$(BIND)/$(NAME): $(SRCS_OBJS)
+	@echo "compiling executable $@"
+	@mkdir -p $(@D)
+	@$(CC) -o $@ $^ $(LINK)
+
+run:
+	@cd $(BIND) && $(CMD)
+
+leak: leakgrind
+leakgrind: $(BIND)/$(NAME)
+	@rm -f valgrind.log
+	@cd $(BIND) && valgrind $(VALGRIND) 2> ../valgrind.log $(CMD)
+	@less valgrind.log
+
+install: $(BIND)/$(NAME)
+	@echo "installing"
+	@install -dZ ${DESTDIR}/etc/ly
+	@install -DZ $(BIND)/$(NAME) -t ${DESTDIR}/usr/bin
+	@install -DZ $(RESD)/xsetup.sh -t ${DESTDIR}/etc/ly
+	@install -DZ $(RESD)/wsetup.sh -t ${DESTDIR}/etc/ly
+	@install -DZ $(RESD)/config.ini -t ${DESTDIR}/etc/ly
+	@install -dZ ${DESTDIR}/etc/ly/lang
+	@install -DZ $(RESD)/lang/* -t ${DESTDIR}/etc/ly/lang
+	@install -DZ $(RESD)/ly.service -t ${DESTDIR}/usr/lib/systemd/system
+
+uninstall:
+	@echo "uninstalling"
+	@rm -rf ${DESTDIR}/etc/ly
+	@rm -f ${DESTDIR}/usr/bin/ly
+	@rm -f ${DESTDIR}/usr/lib/systemd/system/ly.service
+
+clean:
+	@echo "cleaning"
+	@rm -rf $(BIND) $(OBJD) valgrind.log
+	@(cd $(SUBD)/termbox_next && $(MAKE) clean)
+
+github:
+	@echo "sourcing submodules from https://github.com"
+	@cp .github .gitmodules
+	@git submodule sync
+	@git submodule update --init --remote
+	@cd $(SUBD)/argoat && make github
+	@git submodule update --init --recursive --remote
+
+gitea:
+	@echo "sourcing submodules from https://git.cylgom.net"
+	@cp .gitea .gitmodules
+	@git submodule sync
+	@git submodule update --init --remote
+	@cd $(SUBD)/argoat && make gitea
+	@git submodule update --init --recursive --remote

readme.md

@@ -0,0 +1,104 @@
+# Ly - a TUI display manager
+[![CodeFactor](https://www.codefactor.io/repository/github/cylgom/ly/badge/master)](https://www.codefactor.io/repository/github/cylgom/ly/overview/master)
+![Ly screenshot](https://user-images.githubusercontent.com/5473047/42466218-8cb53d3c-83ae-11e8-8e53-bae3669f959c.png "Ly screenshot")
+
+Ly is a lightweight TUI (ncurses-like) display manager for Linux and BSD.
+
+## Dependencies
+ - a C99 compiler (tested with tcc and gcc)
+ - a C standard library
+ - make
+ - pam
+ - xcb
+ - xorg
+ - xorg-xauth
+ - mcookie
+ - tput
+ - shutdown
+
+## Support
+The following desktop environments were tested with success
+ - budgie
+ - cinnamon
+ - deepin
+ - enlightenment
+ - gnome
+ - i3
+ - kde
+ - lxde
+ - lxqt
+ - mate
+ - sway
+ - xfce
+ - pantheon
+
+Ly should work with any X desktop environment, and provides
+basic wayland support (sway works very well, for example).
+
+## systemd?
+Unlike what you may have heard, Ly does not require `systemd`,
+and was even specifically designed not to depend on `logind`.
+You should be able to make it work easily with a better init,
+changing the source code won't be necessary :)
+
+## Cloning and Compiling
+Clone the repository
+```
+git clone https://github.com/cylgom/ly.git
+```
+
+Fetch submodules
+```
+make github
+```
+
+Compile
+```
+make
+```
+
+Test in the configured tty (tty2 by default)
+or a terminal emulator (but desktop environments won't start)
+```
+sudo make run
+```
+
+Install Ly and the provided systemd service file
+```
+sudo make install
+```
+
+Enable the service
+```
+sudo systemctl enable ly.service
+```
+
+If you need to switch between ttys after Ly's start you also have to
+disable getty on Ly's tty to prevent "login" from spawning on top of it
+```
+sudo systemctl disable getty@tty2.service
+```
+
+## Configuration
+You can find all the configuration in `/etc/ly/config.ini`.
+The file is commented, and includes the default values.
+
+## Controls
+Use the up and down arrow keys to change the current field, and the
+left and right arrow keys to change the target desktop environment
+while on the desktop field (above the login field).
+
+## Tips
+The numlock and capslock state is printed in the top-right corner.
+Use the F1 and F2 keys to respectively shutdown and reboot.
+Take a look at your .xsession if X doesn't start, as it can interfere
+(this file is launched with X to configure the display properly).
+
+## PSX DOOM fire animation
+To enable the famous PSX DOOM fire described by [Fabien Sanglard](http://fabiensanglard.net/doom_fire_psx/index.html),
+just uncomment `animate = true` in `/etc/ly/config.ini`. You may also
+disable the main box borders with `hide_borders = true`.
+
+## Additional Information
+The name "Ly" is a tribute to the fairy from the game Rayman.
+Ly was tested by oxodao, who is some seriously awesome dude.

res/config.ini

@@ -0,0 +1,99 @@
+# animation enabled
+#animate = false
+#animate = true
+
+# the active animation (only animation '0' available for now)
+#animation = 0
+
+# the char used to mask the password
+#asterisk = *
+#asterisk = o
+
+# background color id
+#bg = 0
+
+# blank main box
+#blank_box = true
+
+# erase password input on failure
+#blank_password = true
+
+# console path
+#console_dev = /dev/console
+
+# input active by default on startup
+#default_input = 2
+
+# foreground color id
+#fg = 9
+
+# remove main box borders
+#hide_borders = false
+#hide_borders = true
+
+# number of visible chars on an input
+#input_len = 34
+
+# active language
+#lang = en
+#lang = fr
+
+# load the saved desktop and login
+#load = true
+
+# main box margins
+#margin_box_h = 2
+#margin_box_v = 1
+
+# total input sizes
+#max_desktop_len = 100
+#max_login_len = 255
+#max_password_len = 255
+
+# cookie generator
+#mcookie_cmd = /usr/bin/mcookie
+
+# event timeout in milliseconds
+#min_refresh_delta = 5
+
+# default path
+#path = /sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/env
+
+# command executed when pressing F2
+#restart_cmd = /sbin/shutdown -r now
+
+# save the current desktop and login as defaults
+#save = true
+
+# file in which to save and load the default desktop and login
+#save_file = /etc/ly/save
+
+# service name (pam needs this set to login)
+#service_name = login
+
+# command executed when pressing F1
+#shutdown_cmd = /sbin/shutdown -a now
+
+# terminal reset command (tput is faster)
+#term_reset_cmd = /usr/bin/tput reset
+
+# tty in use
+#tty = 2
+
+# wayland setup command
+#wayland_cmd = /etc/ly/wsetup.sh
+
+# wayland desktop environments
+#waylandsessions = /usr/share/wayland-sessions
+
+# xorg server command
+#x_cmd = /usr/bin/X
+
+# xorg setup command
+#x_cmd_setup = /etc/ly/xsetup.sh
+
+# xorg xauthority edition tool
+#xauth_cmd = /usr/bin/xauth
+
+# xorg desktop environments
+#xsessions = /usr/share/xsessions

res/lang/en.ini

@@ -0,0 +1,45 @@
+capslock = capslock
+err_alloc = failed memory allocation
+err_bounds = out-of-bounds index
+err_chdir = failed to open home folder
+err_console_dev = failed to access console
+err_dgn_oob = log message
+err_domain = invalid domain
+err_hostname = failed to get hostname
+err_mlock = failed to lock password memory
+err_null = null pointer
+err_pam = pam transaction failed
+err_pam_abort = pam transaction aborted
+err_pam_acct_expired = account expired
+err_pam_auth = authentication error
+err_pam_authinfo_unavail = failed to get user info
+err_pam_authok_reqd = token expired
+err_pam_buf = memory buffer error
+err_pam_cred_err = failed to set credentials
+err_pam_cred_expired = credentials expired
+err_pam_cred_insufficient = insufficient credentials
+err_pam_cred_unavail = failed to get credentials
+err_pam_maxtries = reached maximum tries limit
+err_pam_perm_denied = permission denied
+err_pam_session = session error
+err_pam_sys = system error
+err_pam_user_unknown = unknown user
+err_path = failed to set path
+err_perm_dir = failed to change current directory
+err_perm_group = failed to downgrade group permissions
+err_perm_user = failed to downgrade user permissions
+err_pwnam = failed to get user info
+err_user_gid = failed to set user GID
+err_user_init = failed to initialize user
+err_user_uid = failed to set user UID
+err_xsessions_dir = failed to find sessions folder
+err_xsessions_open = failed to open sessions folder
+f1 = F1 shutdown
+f2 = F2 reboot
+login = login:
+logout = logged out
+numlock = numlock
+password = password:
+shell = shell
+wayland = wayland
+xinitrc = xinitrc

res/lang/fr.ini

@@ -0,0 +1,45 @@
+capslock = verr.maj
+err_alloc = échec d'allocation mémoire
+err_bounds = indice hors-limite
+err_chdir = échec de l'ouverture du répertoire home
+err_console_dev = échec d'accès à la console
+err_dgn_oob = message
+err_domain = domaine invalide
+err_hostname = échec de captation du nom d'hôte
+err_mlock = échec du verrouillage mémoire
+err_null = pointeur null
+err_pam = échec de la transaction pam
+err_pam_abort = transaction pam avortée
+err_pam_acct_expired = compte expiré
+err_pam_auth = erreur d'authentification
+err_pam_authok_reqd = tiquet expiré
+err_pam_authinfo_unavail = échec de l'obtention des infos utilisateur
+err_pam_buf = erreur de mémoire tampon
+err_pam_cred_err = échec de la modification des identifiants
+err_pam_cred_expired = identifiants expirés
+err_pam_cred_insufficient = identifiants insuffisants
+err_pam_cred_unavail = échec de l'obtention des identifiants
+err_pam_maxtries = limite d'essais atteinte
+err_pam_perm_denied = permission refusée 
+err_pam_session = erreur de session
+err_pam_sys = erreur système
+err_pam_user_unknown = utilisateur inconnu
+err_path = échec de la modification du path
+err_perm_dir = échec de changement de répertoire
+err_perm_group = échec du déclassement des permissions de groupe
+err_perm_user = échec du déclassement des permissions utilisateur
+err_pwnam = échec de captation des infos utilisateur
+err_user_gid = échec de modification du GID
+err_user_init = échec d'initialisation de l'utilisateur
+err_user_uid = échec de modification du UID
+err_xsessions_dir = échec de la recherche du dossier de sessions
+err_xsessions_open = échec de l'ouverture du dossier de sessions
+f1 = F1 éteindre
+f2 = F2 redémarrer
+login = identifiant :
+logout = déconnection
+numlock = verr.num
+password = mot de passe :
+shell = shell
+wayland = wayland
+xinitrc = xinitrc

res/ly.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=TUI display manager
+After=systemd-user-sessions.service plymouth-quit-wait.service
+After=getty@tty2.service
+
+[Service]
+Type=idle
+ExecStart=/usr/bin/ly
+StandardInput=tty
+TTYPath=/dev/tty2
+TTYReset=yes
+TTYVHangup=yes
+
+[Install]
+Alias=display-manager.service

res/valgrind.supp

@@ -0,0 +1,31 @@
+{
+	pam
+	Memcheck:Leak
+	...
+	obj:/usr/lib/libpam.so.0.84.2
+	...
+}
+
+{
+	termbox
+	Memcheck:Leak
+	...
+	fun:tb_init
+	...
+}
+
+{
+	libc/dynamic
+	Memcheck:Leak
+	...
+	fun:_dl_catch_exception
+	...
+}
+
+{
+	libc/groups
+	Memcheck:Leak
+	...
+	fun:initgroups
+	...
+}

res/wsetup.sh

@@ -0,0 +1,54 @@
+#!/bin/sh
+# wayland-session - run as user
+# Copyright (C) 2015-2016 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com>
+
+# This file is extracted from kde-workspace (kdm/kfrontend/genkdmconf.c)
+# Copyright (C) 2001-2005 Oswald Buddenhagen <ossi@kde.org>
+
+# Note that the respective logout scripts are not sourced.
+case $SHELL in
+  */bash)
+    [ -z "$BASH" ] && exec $SHELL $0 "$@"
+    set +o posix
+    [ -f /etc/profile ] && . /etc/profile
+    if [ -f $HOME/.bash_profile ]; then
+      . $HOME/.bash_profile
+    elif [ -f $HOME/.bash_login ]; then
+      . $HOME/.bash_login
+    elif [ -f $HOME/.profile ]; then
+      . $HOME/.profile
+    fi
+    ;;
+*/zsh)
+    [ -z "$ZSH_NAME" ] && exec $SHELL $0 "$@"
+    [ -d /etc/zsh ] && zdir=/etc/zsh || zdir=/etc
+    zhome=${ZDOTDIR:-$HOME}
+    # zshenv is always sourced automatically.
+    [ -f $zdir/zprofile ] && . $zdir/zprofile
+    [ -f $zhome/.zprofile ] && . $zhome/.zprofile
+    [ -f $zdir/zlogin ] && . $zdir/zlogin
+    [ -f $zhome/.zlogin ] && . $zhome/.zlogin
+    emulate -R sh
+    ;;
+  */csh|*/tcsh)
+    # [t]cshrc is always sourced automatically.
+    # Note that sourcing csh.login after .cshrc is non-standard.
+    wlsess_tmp=`mktemp /tmp/wlsess-env-XXXXXX`
+    $SHELL -c "if (-f /etc/csh.login) source /etc/csh.login; if (-f ~/.login) source ~/.login; /bin/sh -c 'export -p' >! $wlsess_tmp"
+    . $wlsess_tmp
+    rm -f $wlsess_tmp
+    ;;
+  */fish)
+    [ -f /etc/profile ] && . /etc/profile
+    xsess_tmp=`mktemp /tmp/xsess-env-XXXXXX`
+    $SHELL --login -c "/bin/sh -c 'export -p' > $xsess_tmp"
+    . $xsess_tmp
+    rm -f $xsess_tmp
+    ;;
+  *) # Plain sh, ksh, and anything we do not know.
+    [ -f /etc/profile ] && . /etc/profile
+    [ -f $HOME/.profile ] && . $HOME/.profile
+    ;;
+esac
+
+exec $@

res/xsetup.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+~/.xsession
+exec $@

src/config.c

@@ -0,0 +1,361 @@
+#include "configator.h"
+
+#include "config.h"
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#ifndef DEBUG
+	#define INI_LANG "/etc/ly/lang/%s.ini"
+	#define INI_CONFIG "/etc/ly/config.ini"
+#else
+	#define INI_LANG "../res/lang/%s.ini"
+	#define INI_CONFIG "../res/config.ini"
+#endif
+
+static void lang_handle(void* data, char** pars, const int pars_count)
+{
+	if (*((char**)data) != NULL)
+	{
+		free (*((char**)data));
+	}
+
+	*((char**)data) = strdup(*pars);
+}
+
+static void config_handle_u8(void* data, char** pars, const int pars_count)
+{
+	if (strcmp(*pars, "") == 0)
+	{
+		*((u8*)data) = 0;
+	}
+	else
+	{
+		*((u8*)data) = atoi(*pars);
+	}
+}
+
+static void config_handle_u16(void* data, char** pars, const int pars_count)
+{
+	if (strcmp(*pars, "") == 0)
+	{
+		*((u16*)data) = 0;
+	}
+	else
+	{
+		*((u16*)data) = atoi(*pars);
+	}
+}
+
+void config_handle_str(void* data, char** pars, const int pars_count)
+{
+	if (*((char**)data) != NULL)
+	{
+		free(*((char**)data));
+	}
+
+	*((char**)data) = strdup(*pars);
+}
+
+static void config_handle_char(void* data, char** pars, const int pars_count)
+{
+	*((char*)data) = **pars;
+}
+
+static void config_handle_bool(void* data, char** pars, const int pars_count)
+{
+	*((bool*)data) = (strcmp("true", *pars) == 0);
+}
+
+void lang_load()
+{
+	// must be alphabetically sorted
+	struct configator_param map_no_section[] =
+	{
+		{"capslock", &lang.capslock, lang_handle},
+		{"err_alloc", &lang.err_alloc, lang_handle},
+		{"err_bounds", &lang.err_bounds, lang_handle},
+		{"err_chdir", &lang.err_chdir, lang_handle},
+		{"err_console_dev", &lang.err_console_dev, lang_handle},
+		{"err_dgn_oob", &lang.err_dgn_oob, lang_handle},
+		{"err_domain", &lang.err_domain, lang_handle},
+		{"err_hostname", &lang.err_hostname, lang_handle},
+		{"err_mlock", &lang.err_mlock, lang_handle},
+		{"err_null", &lang.err_null, lang_handle},
+		{"err_pam", &lang.err_pam, lang_handle},
+		{"err_pam_abort", &lang.err_pam_abort, lang_handle},
+		{"err_pam_acct_expired", &lang.err_pam_acct_expired, lang_handle},
+		{"err_pam_auth", &lang.err_pam_auth, lang_handle},
+		{"err_pam_authinfo_unavail", &lang.err_pam_authinfo_unavail, lang_handle},
+		{"err_pam_authok_reqd", &lang.err_pam_authok_reqd, lang_handle},
+		{"err_pam_buf", &lang.err_pam_buf, lang_handle},
+		{"err_pam_cred_err", &lang.err_pam_cred_err, lang_handle},
+		{"err_pam_cred_expired", &lang.err_pam_cred_expired, lang_handle},
+		{"err_pam_cred_insufficient", &lang.err_pam_cred_insufficient, lang_handle},
+		{"err_pam_cred_unavail", &lang.err_pam_cred_unavail, lang_handle},
+		{"err_pam_maxtries", &lang.err_pam_maxtries, lang_handle},
+		{"err_pam_perm_denied", &lang.err_pam_perm_denied, lang_handle},
+		{"err_pam_session", &lang.err_pam_session, lang_handle},
+		{"err_pam_sys", &lang.err_pam_sys, lang_handle},
+		{"err_pam_user_unknown", &lang.err_pam_user_unknown, lang_handle},
+		{"err_path", &lang.err_path, lang_handle},
+		{"err_perm_dir", &lang.err_perm_dir, lang_handle},
+		{"err_perm_group", &lang.err_perm_group, lang_handle},
+		{"err_perm_user", &lang.err_perm_user, lang_handle},
+		{"err_pwnam", &lang.err_pwnam, lang_handle},
+		{"err_user_gid", &lang.err_user_gid, lang_handle},
+		{"err_user_init", &lang.err_user_init, lang_handle},
+		{"err_user_uid", &lang.err_user_uid, lang_handle},
+		{"err_xsessions_dir", &lang.err_xsessions_dir, lang_handle},
+		{"err_xsessions_open", &lang.err_xsessions_open, lang_handle},
+		{"f1", &lang.f1, lang_handle},
+		{"f2", &lang.f2, lang_handle},
+		{"login", &lang.login, lang_handle},
+		{"logout", &lang.logout, lang_handle},
+		{"numlock", &lang.numlock, lang_handle},
+		{"password", &lang.password, lang_handle},
+		{"shell", &lang.shell, lang_handle},
+		{"wayland", &lang.wayland, lang_handle},
+		{"xinitrc", &lang.xinitrc, lang_handle},
+	};
+
+	uint16_t map_len[] = {45};
+	struct configator_param* map[] =
+	{
+		map_no_section,
+	};
+
+	uint16_t sections_len = 0;
+	struct configator_param* sections = NULL;
+
+	struct configator lang;
+	lang.map = map;
+	lang.map_len = map_len;
+	lang.sections = sections;
+	lang.sections_len = sections_len;
+
+	char file[256];
+	snprintf(file, 256, INI_LANG, config.lang);
+
+	if (access(file, F_OK) != -1)
+	{
+		configator(&lang, file);
+	}
+}
+
+void config_load()
+{
+	// must be alphabetically sorted
+	struct configator_param map_no_section[] =
+	{
+		{"animate", &config.animate, config_handle_bool},
+		{"animation", &config.animation, config_handle_u8},
+		{"asterisk", &config.asterisk, config_handle_char},
+		{"bg", &config.bg, config_handle_u8},
+		{"blank_box", &config.blank_box, config_handle_bool},
+		{"blank_password", &config.blank_box, config_handle_bool},
+		{"console_dev", &config.console_dev, config_handle_str},
+		{"default_input", &config.default_input, config_handle_u8},
+		{"fg", &config.fg, config_handle_u8},
+		{"hide_borders", &config.hide_borders, config_handle_bool},
+		{"input_len", &config.input_len, config_handle_u8},
+		{"lang", &config.lang, config_handle_str},
+		{"load", &config.load, config_handle_bool},
+		{"margin_box_h", &config.margin_box_h, config_handle_u8},
+		{"margin_box_v", &config.margin_box_v, config_handle_u8},
+		{"max_desktop_len", &config.max_desktop_len, config_handle_u8},
+		{"max_login_len", &config.max_login_len, config_handle_u8},
+		{"max_password_len", &config.max_password_len, config_handle_u8},
+		{"mcookie_cmd", &config.mcookie_cmd, config_handle_str},
+		{"min_refresh_delta", &config.min_refresh_delta, config_handle_u16},
+		{"path", &config.path, config_handle_str},
+		{"restart_cmd", &config.restart_cmd, config_handle_str},
+		{"save", &config.save, config_handle_bool},
+		{"save_file", &config.save_file, config_handle_str},
+		{"service_name", &config.service_name, config_handle_str},
+		{"shutdown_cmd", &config.shutdown_cmd, config_handle_str},
+		{"term_reset_cmd", &config.term_reset_cmd, config_handle_str},
+		{"tty", &config.tty, config_handle_u8},
+		{"wayland_cmd", &config.wayland_cmd, config_handle_str},
+		{"waylandsessions", &config.waylandsessions, config_handle_str},
+		{"x_cmd", &config.x_cmd, config_handle_str},
+		{"x_cmd_setup", &config.x_cmd_setup, config_handle_str},
+		{"xauth_cmd", &config.xauth_cmd, config_handle_str},
+		{"xsessions", &config.xsessions, config_handle_str},
+	};
+
+	uint16_t map_len[] = {34};
+	struct configator_param* map[] =
+	{
+		map_no_section,
+	};
+
+	uint16_t sections_len = 0;
+	struct configator_param* sections = NULL;
+
+	struct configator config;
+	config.map = map;
+	config.map_len = map_len;
+	config.sections = sections;
+	config.sections_len = sections_len;
+
+	configator(&config, INI_CONFIG);
+}
+
+void lang_defaults()
+{
+	lang.capslock = strdup("capslock");
+	lang.err_alloc = strdup("failed memory allocation");
+	lang.err_bounds = strdup("out-of-bounds index");
+	lang.err_chdir = strdup("failed to open home folder");
+	lang.err_console_dev = strdup("failed to access console");
+	lang.err_dgn_oob = strdup("log message");
+	lang.err_domain = strdup("invalid domain");
+	lang.err_hostname = strdup("failed to get hostname");
+	lang.err_mlock = strdup("failed to lock password memory");
+	lang.err_null = strdup("null pointer");
+	lang.err_pam = strdup("pam transaction failed");
+	lang.err_pam_abort = strdup("pam transaction aborted");
+	lang.err_pam_acct_expired = strdup("account expired");
+	lang.err_pam_auth = strdup("authentication error");
+	lang.err_pam_authinfo_unavail = strdup("failed to get user info");
+	lang.err_pam_authok_reqd = strdup("token expired");
+	lang.err_pam_buf = strdup("memory buffer error");
+	lang.err_pam_cred_err = strdup("failed to set credentials");
+	lang.err_pam_cred_expired = strdup("credentials expired");
+	lang.err_pam_cred_insufficient = strdup("insufficient credentials");
+	lang.err_pam_cred_unavail = strdup("failed to get credentials");
+	lang.err_pam_maxtries = strdup("reached maximum tries limit");
+	lang.err_pam_perm_denied = strdup("permission denied");
+	lang.err_pam_session = strdup("session error");
+	lang.err_pam_sys = strdup("system error");
+	lang.err_pam_user_unknown = strdup("unknown user");
+	lang.err_path = strdup("failed to set path");
+	lang.err_perm_dir = strdup("failed to change current directory");
+	lang.err_perm_group = strdup("failed to downgrade group permissions");
+	lang.err_perm_user = strdup("failed to downgrade user permissions");
+	lang.err_pwnam = strdup("failed to get user info");
+	lang.err_user_gid = strdup("failed to set user GID");
+	lang.err_user_init = strdup("failed to initialize user");
+	lang.err_user_uid = strdup("failed to set user UID");
+	lang.err_xsessions_dir = strdup("failed to find sessions folder");
+	lang.err_xsessions_open = strdup("failed to open sessions folder");
+	lang.f1 = strdup("F1 shutdown");
+	lang.f2 = strdup("F2 reboot");
+	lang.login = strdup("login:");
+	lang.logout = strdup("logged out");
+	lang.numlock = strdup("numlock");
+	lang.password = strdup("password:");
+	lang.shell = strdup("shell");
+	lang.wayland = strdup("wayland");
+	lang.xinitrc = strdup("xinitrc");
+}
+
+void config_defaults()
+{
+	config.animate = false;
+	config.animation = 0;
+	config.asterisk = '*';
+	config.bg = 0;
+	config.blank_box = true;
+	config.blank_password = false;
+	config.console_dev = strdup("/dev/console");
+	config.default_input = 2;
+	config.fg = 9;
+	config.hide_borders = false;
+	config.input_len = 34;
+	config.lang = strdup("en");
+	config.load = true;
+	config.margin_box_h = 2;
+	config.margin_box_v = 1;
+	config.max_desktop_len = 100;
+	config.max_login_len = 255;
+	config.max_password_len = 255;
+	config.mcookie_cmd = strdup("/usr/bin/mcookie");
+	config.min_refresh_delta = 5;
+	config.path = strdup("/sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/env");
+	config.restart_cmd = strdup("/sbin/shutdown -r now");
+	config.save = true;
+	config.save_file = strdup("/etc/ly/save");
+	config.service_name = strdup("login");
+	config.shutdown_cmd = strdup("/sbin/shutdown -a now");
+	config.term_reset_cmd = strdup("/usr/bin/tput reset");
+	config.tty = 2;
+	config.wayland_cmd = strdup("/etc/ly/wsetup.sh");
+	config.waylandsessions = strdup("/usr/share/wayland-sessions");
+	config.x_cmd = strdup("/usr/bin/X");
+	config.x_cmd_setup = strdup("/etc/ly/xsetup.sh");
+	config.xauth_cmd = strdup("/usr/bin/xauth");
+	config.xsessions = strdup("/usr/share/xsessions");
+}
+
+void lang_free()
+{
+	free(lang.capslock);
+	free(lang.err_alloc);
+	free(lang.err_bounds);
+	free(lang.err_chdir);
+	free(lang.err_console_dev);
+	free(lang.err_dgn_oob);
+	free(lang.err_domain);
+	free(lang.err_hostname);
+	free(lang.err_mlock);
+	free(lang.err_null);
+	free(lang.err_pam);
+	free(lang.err_pam_abort);
+	free(lang.err_pam_acct_expired);
+	free(lang.err_pam_auth);
+	free(lang.err_pam_authinfo_unavail);
+	free(lang.err_pam_authok_reqd);
+	free(lang.err_pam_buf);
+	free(lang.err_pam_cred_err);
+	free(lang.err_pam_cred_expired);
+	free(lang.err_pam_cred_insufficient);
+	free(lang.err_pam_cred_unavail);
+	free(lang.err_pam_maxtries);
+	free(lang.err_pam_perm_denied);
+	free(lang.err_pam_session);
+	free(lang.err_pam_sys);
+	free(lang.err_pam_user_unknown);
+	free(lang.err_path);
+	free(lang.err_perm_dir);
+	free(lang.err_perm_group);
+	free(lang.err_perm_user);
+	free(lang.err_pwnam);
+	free(lang.err_user_gid);
+	free(lang.err_user_init);
+	free(lang.err_user_uid);
+	free(lang.err_xsessions_dir);
+	free(lang.err_xsessions_open);
+	free(lang.f1);
+	free(lang.f2);
+	free(lang.login);
+	free(lang.logout);
+	free(lang.numlock);
+	free(lang.password);
+	free(lang.shell);
+	free(lang.wayland);
+	free(lang.xinitrc);
+}
+
+void config_free()
+{
+	free(config.console_dev);
+	free(config.lang);
+	free(config.mcookie_cmd);
+	free(config.path);
+	free(config.restart_cmd);
+	free(config.save_file);
+	free(config.service_name);
+	free(config.shutdown_cmd);
+	free(config.term_reset_cmd);
+	free(config.wayland_cmd);
+	free(config.waylandsessions);
+	free(config.x_cmd);
+	free(config.x_cmd_setup);
+	free(config.xauth_cmd);
+	free(config.xsessions);
+}

src/config.h

@@ -0,0 +1,104 @@
+#ifndef H_LY_CONFIG
+#define H_LY_CONFIG
+
+#include "ctypes.h"
+
+struct lang
+{
+	char* capslock;
+	char* err_alloc;
+	char* err_bounds;
+	char* err_chdir;
+	char* err_console_dev;
+	char* err_dgn_oob;
+	char* err_domain;
+	char* err_hostname;
+	char* err_mlock;
+	char* err_null;
+	char* err_pam;
+	char* err_pam_abort;
+	char* err_pam_acct_expired;
+	char* err_pam_auth;
+	char* err_pam_authinfo_unavail;
+	char* err_pam_authok_reqd;
+	char* err_pam_buf;
+	char* err_pam_cred_err;
+	char* err_pam_cred_expired;
+	char* err_pam_cred_insufficient;
+	char* err_pam_cred_unavail;
+	char* err_pam_maxtries;
+	char* err_pam_perm_denied;
+	char* err_pam_session;
+	char* err_pam_sys;
+	char* err_pam_user_unknown;
+	char* err_path;
+	char* err_perm_dir;
+	char* err_perm_group;
+	char* err_perm_user;
+	char* err_pwnam;
+	char* err_user_gid;
+	char* err_user_init;
+	char* err_user_uid;
+	char* err_xsessions_dir;
+	char* err_xsessions_open;
+	char* f1;
+	char* f2;
+	char* login;
+	char* logout;
+	char* numlock;
+	char* password;
+	char* shell;
+	char* wayland;
+	char* xinitrc;
+};
+
+struct config
+{
+	bool animate;
+	u8 animation;
+	char asterisk;
+	u8 bg;
+	bool blank_box;
+	bool blank_password;
+	char* console_dev;
+	u8 default_input;
+	u8 fg;
+	bool hide_borders;
+	u8 input_len;
+	char* lang;
+	bool load;
+	u8 margin_box_h;
+	u8 margin_box_v;
+	u8 max_desktop_len;
+	u8 max_login_len;
+	u8 max_password_len;
+	char* mcookie_cmd;
+	u16 min_refresh_delta;
+	char* path;
+	char* restart_cmd;
+	bool save;
+	char* save_file;
+	char* service_name;
+	char* shutdown_cmd;
+	char* term_reset_cmd;
+	u8 tty;
+	char* wayland_cmd;
+	char* waylandsessions;
+	char* x_cmd;
+	char* x_cmd_setup;
+	char* xauth_cmd;
+	char* xsessions;
+};
+
+extern struct lang lang;
+extern struct config config;
+
+void config_handle_str(void* data, char** pars, const int pars_count);
+void lang_load();
+void config_load();
+void lang_defaults();
+void config_defaults();
+void lang_free();
+void config_free();
+
+#endif

src/dragonfail_error.h

@@ -0,0 +1,27 @@
+#ifndef H_DRAGONFAIL_ERROR
+#define H_DRAGONFAIL_ERROR
+
+enum dgn_error
+{
+	DGN_OK, // do not remove
+
+	DGN_NULL,
+	DGN_ALLOC,
+	DGN_BOUNDS,
+	DGN_DOMAIN,
+	DGN_MLOCK,
+	DGN_XSESSIONS_DIR,
+	DGN_XSESSIONS_OPEN,
+	DGN_PATH,
+	DGN_CHDIR,
+	DGN_PWNAM,
+	DGN_USER_INIT,
+	DGN_USER_GID,
+	DGN_USER_UID,
+	DGN_PAM,
+	DGN_HOSTNAME,
+
+	DGN_SIZE, // do not remove
+};
+
+#endif

src/draw.c

@@ -0,0 +1,648 @@
+#include "dragonfail.h"
+#include "termbox.h"
+#include "ctypes.h"
+
+#include "inputs.h"
+#include "utils.h"
+#include "config.h"
+#include "draw.h"
+
+#include <ctype.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stropts.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#if defined(__DragonFly__) || defined(__FreeBSD__)
+	#include <sys/kbio.h>
+#else // linux
+	#include <linux/kd.h>
+#endif
+
+#define DOOM_STEPS 13
+
+void draw_init(struct term_buf* buf)
+{
+	buf->width = tb_width();
+	buf->height = tb_height();
+	hostname(&buf->info_line);
+	buf->info_line = NULL;
+
+	u16 len_login = strlen(lang.login);
+	u16 len_password = strlen(lang.password);
+
+	if (len_login > len_password)
+	{
+		buf->labels_max_len = len_login;
+	}
+	else
+	{
+		buf->labels_max_len = len_password;
+	}
+
+	buf->box_height = 7 + (2 * config.margin_box_v);
+	buf->box_width =
+		(2 * config.margin_box_h)
+		+ (config.input_len + 1)
+		+ buf->labels_max_len;
+
+#if defined(__linux__)
+	buf->box_chars.left_up = 0x250c;
+	buf->box_chars.left_down = 0x2514;
+	buf->box_chars.right_up = 0x2510;
+	buf->box_chars.right_down = 0x2518;
+	buf->box_chars.top = 0x2500;
+	buf->box_chars.bot = 0x2500;
+	buf->box_chars.left = 0x2502;
+	buf->box_chars.right = 0x2502;
+#else
+	buf->box_chars.left_up = '+';
+	buf->box_chars.left_down = '+';
+	buf->box_chars.right_up = '+';
+	buf->box_chars.right_down= '+';
+	buf->box_chars.top = '-';
+	buf->box_chars.bot = '-';
+	buf->box_chars.left = '|';
+	buf->box_chars.right = '|';
+#endif
+}
+
+void draw_free(struct term_buf* buf)
+{
+	if (config.animate)
+	{
+		free(buf->tmp_buf);
+	}
+}
+
+void draw_box(struct term_buf* buf)
+{
+	u16 box_x = (buf->width - buf->box_width) / 2;
+	u16 box_y = (buf->height - buf->box_height) / 2;
+	u16 box_x2 = (buf->width + buf->box_width) / 2;
+	u16 box_y2 = (buf->height + buf->box_height) / 2;
+	buf->box_x = box_x;
+	buf->box_y = box_y;
+
+	if (!config.hide_borders)
+	{
+		// corners
+		tb_change_cell(
+			box_x - 1,
+			box_y - 1,
+			buf->box_chars.left_up,
+			config.fg,
+			config.bg);
+		tb_change_cell(
+			box_x2,
+			box_y - 1,
+			buf->box_chars.right_up,
+			config.fg,
+			config.bg);
+		tb_change_cell(
+			box_x - 1,
+			box_y2,
+			buf->box_chars.left_down,
+			config.fg,
+			config.bg);
+		tb_change_cell(
+			box_x2,
+			box_y2,
+			buf->box_chars.right_down,
+			config.fg,
+			config.bg);
+
+		// top and bottom
+		struct tb_cell c1 = {buf->box_chars.top, config.fg, config.bg};
+		struct tb_cell c2 = {buf->box_chars.bot, config.fg, config.bg};
+
+		for (u8 i = 0; i < buf->box_width; ++i)
+		{
+			tb_put_cell(
+				box_x + i,
+				box_y - 1,
+				&c1);
+			tb_put_cell(
+				box_x + i,
+				box_y2,
+				&c2);
+		}
+
+		// left and right
+		c1.ch = buf->box_chars.left;
+		c2.ch = buf->box_chars.right;
+
+		for (u8 i = 0; i < buf->box_height; ++i)
+		{
+			tb_put_cell(
+				box_x - 1,
+				box_y + i,
+				&c1);
+
+			tb_put_cell(
+				box_x2,
+				box_y + i,
+				&c2);
+		}
+	}
+
+	if (config.blank_box)
+	{
+		struct tb_cell blank = {' ', config.fg, config.bg};
+
+		for (u8 i = 0; i < buf->box_height; ++i)
+		{
+			for (u8 k = 0; k < buf->box_width; ++k)
+			{
+				tb_put_cell(
+					box_x + k,
+					box_y + i,
+					&blank);
+			}
+		}
+	}
+}
+
+struct tb_cell* strn_cell(char* s, u16 len) // throws
+{
+	struct tb_cell* cells = malloc((sizeof (struct tb_cell)) * len);
+	char* s2 = s;
+	u32 c;
+
+	if (cells != NULL)
+	{
+		for (u16 i = 0; i < len; ++i)
+		{
+			if ((s2 - s) >= len)
+			{
+				break;
+			}
+
+			s2 += utf8_char_to_unicode(&c, s2);
+
+			cells[i].ch = c;
+			cells[i].bg = config.bg;
+			cells[i].fg = config.fg;
+		}
+	}
+	else
+	{
+		dgn_throw(DGN_ALLOC);
+	}
+
+	return cells;
+}
+
+struct tb_cell* str_cell(char* s) // throws
+{
+	return strn_cell(s, strlen(s));
+}
+
+void draw_labels(struct term_buf* buf) // throws
+{
+	// login text
+	struct tb_cell* login = str_cell(lang.login);
+
+	if (dgn_catch())
+	{
+		dgn_reset();
+	}
+	else
+	{
+		tb_blit(
+			buf->box_x + config.margin_box_h,
+			buf->box_y + config.margin_box_v + 4,
+			strlen(lang.login),
+			1,
+			login);
+		free(login);
+	}
+
+	// password text
+	struct tb_cell* password = str_cell(lang.password);
+
+	if (dgn_catch())
+	{
+		dgn_reset();
+	}
+	else
+	{
+		tb_blit(
+			buf->box_x + config.margin_box_h,
+			buf->box_y + config.margin_box_v + 6,
+			strlen(lang.password),
+			1,
+			password);
+		free(password);
+	}
+
+	if (buf->info_line != NULL)
+	{
+		u16 len = strlen(buf->info_line);
+		struct tb_cell* info_cell = str_cell(buf->info_line);
+
+		if (dgn_catch())
+		{
+			dgn_reset();
+		}
+		else
+		{
+			tb_blit(
+				buf->box_x + ((buf->box_width - len) / 2),
+				buf->box_y + config.margin_box_v,
+				len,
+				1,
+				info_cell);
+			free(info_cell);
+		}
+	}
+}
+
+void draw_f_commands()
+{
+	struct tb_cell* f1 = str_cell(lang.f1);
+
+	if (dgn_catch())
+	{
+		dgn_reset();
+	}
+	else
+	{
+		tb_blit(0, 0, strlen(lang.f1), 1, f1);
+		free(f1);
+	}
+
+	struct tb_cell* f2 = str_cell(lang.f2);
+
+	if (dgn_catch())
+	{
+		dgn_reset();
+	}
+	else
+	{
+		tb_blit(strlen(lang.f1) + 1, 0, strlen(lang.f2), 1, f2);
+		free(f2);
+	}
+}
+
+void draw_lock_state(struct term_buf* buf)
+{
+	// get values
+	int fd = open(config.console_dev, O_RDONLY);
+
+	if (fd < 0)
+	{
+		buf->info_line = lang.err_console_dev;
+		return;
+	}
+
+	bool numlock_on;
+	bool capslock_on;
+
+#if defined(__DragonFly__) || defined(__FreeBSD__)
+	int led;
+	ioctl(fd, KDGETLED, &led);
+	numlock_on = led & LED_NUM;
+	capslock_on = led & LED_CAP;
+#else // linux
+	char led;
+	ioctl(fd, KDGKBLED, &led);
+	numlock_on = led & K_NUMLOCK;
+	capslock_on = led & K_CAPSLOCK;
+#endif
+
+	close(fd);
+
+	// print text
+	u16 pos_x = buf->width - strlen(lang.numlock);
+
+	if (numlock_on)
+	{
+		struct tb_cell* numlock = str_cell(lang.numlock);
+
+		if (dgn_catch())
+		{
+			dgn_reset();
+		}
+		else
+		{
+			tb_blit(pos_x, 0, strlen(lang.numlock), 1, numlock);
+			free(numlock);
+		}
+	}
+
+	pos_x -= strlen(lang.capslock) + 1;
+
+	if (capslock_on)
+	{
+		struct tb_cell* capslock = str_cell(lang.capslock);
+
+		if (dgn_catch())
+		{
+			dgn_reset();
+		}
+		else
+		{
+			tb_blit(pos_x, 0, strlen(lang.capslock), 1, capslock);
+			free(capslock);
+		}
+	}
+}
+
+void draw_desktop(struct desktop* target)
+{
+	u16 len = strlen(target->list[target->cur]);
+
+	if (len > (target->visible_len - 3))
+	{
+		len = target->visible_len - 3;
+	}
+
+	tb_change_cell(
+		target->x,
+		target->y,
+		'<',
+		config.fg,
+		config.bg);
+
+	tb_change_cell(
+		target->x + target->visible_len - 1,
+		target->y,
+		'>',
+		config.fg,
+		config.bg);
+
+	for (u16 i = 0; i < len; ++ i)
+	{
+		tb_change_cell(
+			target->x + i + 2,
+			target->y,
+			target->list[target->cur][i],
+			config.fg,
+			config.bg);
+	}
+}
+
+void draw_input(struct text* input)
+{
+	u16 len = strlen(input->text);
+	u16 visible_len = input->visible_len;
+
+	if (len > visible_len)
+	{
+		len = visible_len;
+	}
+
+	struct tb_cell* cells = strn_cell(input->visible_start, len);
+
+	if (dgn_catch())
+	{
+		dgn_reset();
+	}
+	else
+	{
+		tb_blit(input->x, input->y, len, 1, cells);
+		free(cells);
+
+		struct tb_cell c1 = {' ', config.fg, config.bg};
+
+		for (u16 i = input->end - input->visible_start; i < visible_len; ++i)
+		{
+			tb_put_cell(
+				input->x + i,
+				input->y,
+				&c1);
+		}
+	}
+}
+
+void draw_input_mask(struct text* input)
+{
+	u16 len = strlen(input->text);
+	u16 visible_len = input->visible_len;
+
+	if (len > visible_len)
+	{
+		len = visible_len;
+	}
+
+	struct tb_cell c1 = {config.asterisk, config.fg, config.bg};
+	struct tb_cell c2 = {' ', config.fg, config.bg};
+
+	for (u16 i = 0; i < visible_len; ++i)
+	{
+		if (input->visible_start + i < input->end)
+		{
+			tb_put_cell(
+				input->x + i,
+				input->y,
+				&c1);
+		}
+		else
+		{
+			tb_put_cell(
+				input->x + i,
+				input->y,
+				&c2);
+		}
+	}
+}
+
+void position_input(
+	struct term_buf* buf,
+	struct desktop* desktop,
+	struct text* login,
+	struct text* password)
+{
+	u16 x = buf->box_x + config.margin_box_h + buf->labels_max_len + 1;
+	i32 len = buf->box_x + buf->box_width - config.margin_box_h - x;
+
+	if (len < 0)
+	{
+		return;
+	}
+
+	desktop->x = x;
+	desktop->y = buf->box_y + config.margin_box_v + 2;
+	desktop->visible_len = len;
+
+	login->x = x;
+	login->y = buf->box_y + config.margin_box_v + 4;
+	login->visible_len = len;
+
+	password->x = x;
+	password->y = buf->box_y + config.margin_box_v + 6;
+	password->visible_len = len;
+}
+
+static void doom_init(struct term_buf* buf)
+{
+	buf->init_width = buf->width;
+	buf->init_height = buf->height;
+
+	u16 tmp_len = buf->width * buf->height;
+	buf->tmp_buf = malloc(tmp_len);
+	tmp_len -= buf->width;
+
+	if (buf->tmp_buf == NULL)
+	{
+		dgn_throw(DGN_ALLOC);
+	}
+
+	memset(buf->tmp_buf, 0, tmp_len);
+	memset(buf->tmp_buf + tmp_len, DOOM_STEPS - 1, buf->width);
+}
+
+void animate_init(struct term_buf* buf)
+{
+	if (config.animate)
+	{
+		switch(config.animation)
+		{
+			default:
+			{
+				doom_init(buf);
+				break;
+			}
+		}
+	}
+}
+
+static void doom(struct term_buf* term_buf)
+{
+	static struct tb_cell fire[DOOM_STEPS] =
+	{
+		{' ', 9, 0}, // default
+		{0x2591, 2, 0}, // red
+		{0x2592, 2, 0}, // red
+		{0x2593, 2, 0}, // red
+		{0x2588, 2, 0}, // red
+		{0x2591, 4, 2}, // yellow
+		{0x2592, 4, 2}, // yellow
+		{0x2593, 4, 2}, // yellow
+		{0x2588, 4, 2}, // yellow
+		{0x2591, 8, 4}, // white
+		{0x2592, 8, 4}, // white
+		{0x2593, 8, 4}, // white
+		{0x2588, 8, 4}, // white
+	};
+
+	u16 src;
+	u16 random;
+	u16 dst;
+
+	u16 w = term_buf->init_width;
+	u8* tmp = term_buf->tmp_buf;
+
+	if ((term_buf->width != term_buf->init_width) || (term_buf->height != term_buf->init_height))
+	{
+		return;
+	}
+
+	struct tb_cell* buf = tb_cell_buffer();
+
+	for (u16 x = 0; x < w; ++x)
+	{
+		for (u16 y = 1; y < term_buf->init_height; ++y)
+		{
+			src = y * w + x;
+			random = ((rand() % 7) & 3);
+			dst = src - random + 1;
+
+			if (w > dst)
+			{
+				dst = 0;
+			}
+			else
+			{
+				dst -= w;
+			}
+
+			tmp[dst] = tmp[src] - (random & 1);
+
+			if (tmp[dst] > 12)
+			{
+				tmp[dst] = 0;
+			}
+
+			buf[dst] = fire[tmp[dst]];
+			buf[src] = fire[tmp[src]];
+		}
+	}
+}
+
+void animate(struct term_buf* buf)
+{
+	buf->width = tb_width();
+	buf->height = tb_height();
+
+	if (config.animate)
+	{
+		switch(config.animation)
+		{
+			default:
+			{
+				doom(buf);
+				break;
+			}
+		}
+	}
+}
+
+bool cascade(struct term_buf* term_buf, u8* fails)
+{
+	u16 width = term_buf->width;
+	u16 height = term_buf->height;
+
+	struct tb_cell* buf = tb_cell_buffer();
+	bool changes = false;
+	char c_under;
+	char c;
+
+	for (int i = height - 2; i >= 0; --i)
+	{
+		for (int k = 0; k < width; ++k)
+		{
+			c = buf[i * width + k].ch;
+
+			if (isspace(c))
+			{
+				continue;
+			}
+
+			c_under = buf[(i + 1) * width + k].ch;
+			
+			if (!isspace(c_under))
+			{
+				continue;
+			}
+
+			if (!changes)
+			{
+				changes = true;
+			}
+
+			if ((rand() % 10) > 7)
+			{
+				continue;
+			}
+
+			buf[(i + 1) * width + k] = buf[i * width + k];
+			buf[i * width + k].ch = ' ';
+		}
+	}
+
+	// stop force-updating 
+	if (!changes)
+	{
+		sleep(7);
+		*fails = 0;
+
+		return false;
+	}
+
+	// force-update
+	return true;
+}

src/draw.h

@@ -0,0 +1,63 @@
+#ifndef H_LY_DRAW
+#define H_LY_DRAW
+
+#include "termbox.h"
+#include "ctypes.h"
+
+#include "inputs.h"
+
+struct box
+{
+	u32 left_up;
+	u32 left_down;
+	u32 right_up;
+	u32 right_down;
+	u32 top;
+	u32 bot;
+	u32 left;
+	u32 right;
+};
+
+struct term_buf
+{
+	u16 width;
+	u16 height;
+	u16 init_width;
+	u16 init_height;
+
+	struct box box_chars;
+	char* info_line;
+	u16 labels_max_len;
+	u16 box_x;
+	u16 box_y;
+	u16 box_width;
+	u16 box_height;
+
+	u8* tmp_buf;
+};
+
+void draw_init(struct term_buf* buf);
+void draw_free(struct term_buf* buf);
+void draw_box(struct term_buf* buf);
+
+struct tb_cell* strn_cell(char* s, u16 len);
+struct tb_cell* str_cell(char* s);
+
+void draw_labels(struct term_buf* buf);
+void draw_f_commands();
+void draw_lock_state(struct term_buf* buf);
+void draw_desktop(struct desktop* target);
+void draw_input(struct text* input);
+void draw_input_mask(struct text* input);
+
+void position_input(
+	struct term_buf* buf,
+	struct desktop* desktop,
+	struct text* login,
+	struct text* password);
+
+void animate_init(struct term_buf* buf);
+void animate(struct term_buf* buf);
+bool cascade(struct term_buf* buf, u8* fails);
+
+#endif

src/inputs.c

@@ -0,0 +1,258 @@
+#include "dragonfail.h"
+#include "termbox.h"
+#include "ctypes.h"
+
+#include "inputs.h"
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+void handle_desktop(void* input_struct, struct tb_event* event)
+{
+	struct desktop* target = (struct desktop*) input_struct;
+
+	if ((event != NULL) && (event->type == TB_EVENT_KEY))
+	{
+		if (event->key == TB_KEY_ARROW_LEFT)
+		{
+			input_desktop_right(target);
+		}
+		else if (event->key == TB_KEY_ARROW_RIGHT)
+		{
+			input_desktop_left(target);
+		}
+	}
+
+	tb_set_cursor(target->x + 2, target->y);
+}
+
+void handle_text(void* input_struct, struct tb_event* event)
+{
+	struct text* target = (struct text*) input_struct;
+
+	if ((event != NULL) && (event->type == TB_EVENT_KEY))
+	{
+		if (event->key == TB_KEY_ARROW_LEFT)
+		{
+			input_text_left(target);
+		}
+		else if (event->key == TB_KEY_ARROW_RIGHT)
+		{
+			input_text_right(target);
+		}
+		else if (event->key == TB_KEY_DELETE)
+		{
+			input_text_delete(target);
+		}
+		else if ((event->key == TB_KEY_BACKSPACE)
+			|| (event->key == TB_KEY_BACKSPACE2))
+		{
+			input_text_backspace(target);
+		}
+		else if (((event->ch > 31) && (event->ch < 127))
+			|| (event->key == TB_KEY_SPACE))
+		{
+			char buf[7] = {0};
+
+			if (event->key == TB_KEY_SPACE)
+			{
+				buf[0] = ' ';
+			}
+			else
+			{
+				utf8_unicode_to_char(buf, event->ch);
+			}
+
+			input_text_write(target, buf[0]);
+		}
+	}
+
+	tb_set_cursor(
+		target->x + (target->cur - target->visible_start),
+		target->y);
+}
+
+void input_desktop(struct desktop* target)
+{
+	target->list = NULL;
+	target->cmd = NULL;
+	target->display_server = NULL;
+	target->cur = 0;
+	target->len = 0;
+
+	input_desktop_add(target, strdup(lang.shell), strdup(""), DS_SHELL);
+	input_desktop_add(target, strdup(lang.xinitrc), strdup("~/.xinitrc"), DS_XINITRC);
+#if 0
+	input_desktop_add(target, strdup(lang.wayland), strdup(""), DS_WAYLAND);
+#endif
+}
+
+void input_text(struct text* target, u64 len)
+{
+	target->text = malloc(len + 1);
+
+	if (target->text == NULL)
+	{
+		dgn_throw(DGN_ALLOC);
+		return;
+	}
+	else
+	{
+		int ok = mlock(target->text, len + 1);
+
+		if (ok < 0)
+		{
+			dgn_throw(DGN_MLOCK);
+			return;
+		}
+
+		memset(target->text, 0, len + 1);
+	}
+
+	target->cur = target->text;
+	target->end = target->text;
+	target->visible_start = target->text;
+	target->len = len;
+}
+
+void input_desktop_free(struct desktop* target)
+{
+	if (target != NULL)
+	{
+		for (u16 i = 0; i < target->len; ++i)
+		{
+			if (target->list[i] != NULL)
+			{
+				free(target->list[i]);
+			}
+
+			if (target->cmd[i] != NULL)
+			{
+				free(target->cmd[i]);
+			}
+		}
+
+		free(target->list);
+		free(target->cmd);
+		free(target->display_server);
+	}
+}
+
+void input_text_free(struct text* target)
+{
+	memset(target->text, 0, target->len);
+	munlock(target->text, target->len + 1);
+	free(target->text);
+}
+
+void input_desktop_right(struct desktop* target)
+{
+	++(target->cur);
+
+	if (target->cur >= target->len)
+	{
+		target->cur = 0;
+	}
+}
+
+void input_desktop_left(struct desktop* target)
+{
+	--(target->cur);
+
+	if (target->cur >= target->len)
+	{
+		target->cur = target->len - 1;
+	}
+}
+
+void input_desktop_add(
+	struct desktop* target,
+	char* name,
+	char* cmd,
+	enum display_server display_server)
+{
+	++(target->len);
+	target->list = realloc(target->list, target->len * (sizeof (char*)));
+	target->cmd = realloc(target->cmd, target->len * (sizeof (char*)));
+	target->display_server = realloc(
+		target->display_server,
+		target->len * (sizeof (enum display_server)));
+	target->cur = target->len - 1;
+
+	if ((target->list == NULL)
+		|| (target->cmd == NULL)
+		|| (target->display_server == NULL))
+	{
+		dgn_throw(DGN_ALLOC);
+		return;
+	}
+
+	target->list[target->cur] = name;
+	target->cmd[target->cur] = cmd;
+	target->display_server[target->cur] = display_server;
+}
+
+void input_text_right(struct text* target)
+{
+	if (target->cur < target->end)
+	{
+		++(target->cur);
+
+		if ((target->cur - target->visible_start) > target->visible_len)
+		{
+			++(target->visible_start);
+		}
+	}
+}
+
+void input_text_left(struct text* target)
+{
+	if (target->cur > target->text)
+	{
+		--(target->cur);
+
+		if ((target->cur - target->visible_start) < 0)
+		{
+			--(target->visible_start);
+		}
+	}
+}
+
+void input_text_write(struct text* target, char ascii)
+{
+	if (ascii <= 0)
+	{
+		return; // unices do not support usernames and passwords other than ascii
+	}
+
+	if ((target->end - target->text + 1) < target->len)
+	{
+		// moves the text to the right to add space for the new ascii char
+		memcpy(target->cur + 1, target->cur, target->end - target->cur);
+		++(target->end);
+		// adds the new char and moves the cursor to the right
+		*(target->cur) = ascii;
+		input_text_right(target);
+	}
+}
+
+void input_text_delete(struct text* target)
+{
+	if (target->cur < target->end)
+	{
+		// moves the text on the right to overwrite the currently pointed char
+		memcpy(target->cur, target->cur + 1, target->end - target->cur + 1);
+		--(target->end);
+	}
+}
+
+void input_text_backspace(struct text* target)
+{
+	if (target->cur > target->text)
+	{
+		input_text_left(target);
+		input_text_delete(target);
+	}
+}

src/inputs.h

@@ -0,0 +1,54 @@
+#ifndef H_LY_INPUTS
+#define H_LY_INPUTS
+
+#include "termbox.h"
+#include "ctypes.h"
+
+enum display_server {DS_WAYLAND, DS_SHELL, DS_XINITRC, DS_XORG};
+
+struct text
+{
+	char* text;
+	char* end;
+	i64 len;
+	char* cur;
+	char* visible_start;
+	u16 visible_len;
+
+	u16 x;
+	u16 y;
+};
+
+struct desktop
+{
+	char** list;
+	char** cmd;
+	enum display_server* display_server;
+
+	u16 cur;
+	u16 len;
+	u16 visible_len;
+	u16 x;
+	u16 y;
+};
+
+void handle_desktop(void* input_struct, struct tb_event* event);
+void handle_text(void* input_struct, struct tb_event* event);
+void input_desktop(struct desktop* target);
+void input_text(struct text* target, u64 len);
+void input_desktop_free(struct desktop* target);
+void input_text_free(struct text* target);
+void input_desktop_right(struct desktop* target);
+void input_desktop_left(struct desktop* target);
+void input_desktop_add(
+	struct desktop* target,
+	char* name,
+	char* cmd,
+	enum display_server display_server);
+void input_text_right(struct text* target);
+void input_text_left(struct text* target);
+void input_text_write(struct text* target, char ascii);
+void input_text_delete(struct text* target);
+void input_text_backspace(struct text* target);
+
+#endif

src/login.c

@@ -0,0 +1,647 @@
+#include "dragonfail.h"
+#include "termbox.h"
+
+#include "inputs.h"
+#include "draw.h"
+#include "utils.h"
+#include "config.h"
+#include "login.h"
+
+#include <errno.h>
+#include <grp.h>
+#include <pwd.h>
+#include <security/pam_appl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <xcb/xcb.h>
+
+int get_free_display()
+{
+	char xlock[1024];
+	u8 i;
+
+	for (i = 0; i < 200; ++i)
+	{
+		snprintf(xlock, 1024, "/tmp/.X%d-lock", i);
+
+		if (access(xlock, F_OK) == -1)
+		{
+			break;
+		}
+	}
+
+	return i;
+}
+
+void reset_terminal(struct passwd* pwd)
+{
+	pid_t pid = fork();
+
+	if (pid == 0)
+	{
+		execl(pwd->pw_shell, pwd->pw_shell, "-c", config.term_reset_cmd, NULL);
+		exit(EXIT_SUCCESS);
+	}
+
+	int status;
+	waitpid(pid, &status, 0);
+}
+
+int login_conv(
+	int num_msg,
+	const struct pam_message** msg,
+	struct pam_response** resp,
+	void* appdata_ptr)
+{
+	*resp = calloc(num_msg, sizeof (struct pam_response));
+
+	if (*resp == NULL)
+	{
+		return PAM_BUF_ERR;
+	}
+
+	char* username;
+	char* password;
+	int ok = PAM_SUCCESS;
+	int i;
+
+	for (i = 0; i < num_msg; ++i)
+	{
+		switch (msg[i]->msg_style)
+		{
+			case PAM_PROMPT_ECHO_ON:
+			{
+				username = ((char**) appdata_ptr)[0];
+				(*resp)[i].resp = strdup(username);
+				break;
+			}
+			case PAM_PROMPT_ECHO_OFF:
+			{
+				password = ((char**) appdata_ptr)[1];
+				(*resp)[i].resp = strdup(password);
+				break;
+			}
+			case PAM_ERROR_MSG:
+			{
+				ok = PAM_CONV_ERR;
+				break;
+			}
+		}
+
+		if (ok != PAM_SUCCESS)
+		{
+			break;
+		}
+	}
+
+	if (ok != PAM_SUCCESS)
+	{
+		for (i = 0; i < num_msg; ++i)
+		{
+			if ((*resp)[i].resp == NULL)
+			{
+				continue;
+			}
+
+			free((*resp)[i].resp);
+			(*resp)[i].resp = NULL;
+		}
+
+		free(*resp);
+		*resp = NULL;
+	}
+
+	return ok;
+}
+
+void pam_diagnose(int error, struct term_buf* buf)
+{
+	switch (error)
+	{
+		case PAM_ACCT_EXPIRED:
+		{
+			buf->info_line = lang.err_pam_acct_expired;
+			break;
+		}
+		case PAM_AUTH_ERR:
+		{
+			buf->info_line = lang.err_pam_auth;
+			break;
+		}
+		case PAM_AUTHINFO_UNAVAIL:
+		{
+			buf->info_line = lang.err_pam_authinfo_unavail;
+			break;
+		}
+		case PAM_BUF_ERR:
+		{
+			buf->info_line = lang.err_pam_buf;
+			break;
+		}
+		case PAM_CRED_ERR:
+		{
+			buf->info_line = lang.err_pam_cred_err;
+			break;
+		}
+		case PAM_CRED_EXPIRED:
+		{
+			buf->info_line = lang.err_pam_cred_expired;
+			break;
+		}
+		case PAM_CRED_INSUFFICIENT:
+		{
+			buf->info_line = lang.err_pam_cred_insufficient;
+			break;
+		}
+		case PAM_CRED_UNAVAIL:
+		{
+			buf->info_line = lang.err_pam_cred_unavail;
+			break;
+		}
+		case PAM_MAXTRIES:
+		{
+			buf->info_line = lang.err_pam_maxtries;
+			break;
+		}
+		case PAM_NEW_AUTHTOK_REQD:
+		{
+			buf->info_line = lang.err_pam_authok_reqd;
+			break;
+		}
+		case PAM_PERM_DENIED:
+		{
+			buf->info_line = lang.err_pam_perm_denied;
+			break;
+		}
+		case PAM_SESSION_ERR:
+		{
+			buf->info_line = lang.err_pam_session;
+			break;
+		}
+		case PAM_SYSTEM_ERR:
+		{
+			buf->info_line = lang.err_pam_sys;
+			break;
+		}
+		case PAM_USER_UNKNOWN:
+		{
+			buf->info_line = lang.err_pam_user_unknown;
+			break;
+		}
+		case PAM_ABORT:
+		default:
+		{
+			buf->info_line = lang.err_pam_abort;
+			break;
+		}
+	}
+
+	dgn_throw(DGN_PAM);
+}
+
+void env_init(struct passwd* pwd, const char* display_name)
+{
+	extern char** environ;
+	// term
+	char* term = getenv("TERM");
+	// clean env
+	environ[0] = NULL;
+
+	if (term != NULL)
+	{
+		setenv("TERM", term, 1);
+	}
+	else
+	{
+		setenv("TERM", "linux", 1);
+	}
+
+	setenv("HOME", pwd->pw_dir, 1);
+	setenv("PWD", pwd->pw_dir, 1);
+	setenv("SHELL", pwd->pw_shell, 1);
+	setenv("USER", pwd->pw_name, 1);
+	setenv("LOGNAME", pwd->pw_name, 1);
+	setenv("DISPLAY", display_name, 1);
+
+	// path
+	int ok = setenv("PATH", config.path, 1);
+
+	if (ok != 0)
+	{
+		dgn_throw(DGN_PATH);
+	}
+}
+
+void env_xdg(const char* tty_id, const enum display_server display_server)
+{
+	char user[15];
+	snprintf(user, 15, "/run/user/%d", getuid());
+	setenv("XDG_RUNTIME_DIR", user, 0);
+	setenv("XDG_SESSION_CLASS", "user", 0);
+	setenv("XDG_SEAT", "seat0", 0);
+	setenv("XDG_VTNR", tty_id, 0);
+
+	switch (display_server)
+	{
+		case DS_WAYLAND:
+		{
+			setenv("XDG_SESSION_TYPE", "wayland", 0);
+			break;
+		}
+		case DS_SHELL:
+		{
+			setenv("XDG_SESSION_TYPE", "tty", 0);
+			break;
+		}
+		case DS_XINITRC:
+		case DS_XORG:
+		{
+			setenv("XDG_SESSION_TYPE", "x11", 0);
+			break;
+		}
+	}
+}
+
+void xauth(const char* display_name, const char* shell, const char* home)
+{
+	char xauthority[256];
+	snprintf(xauthority, 256, "%s/%s", home, ".lyxauth");
+	setenv("XAUTHORITY", xauthority, 1);
+
+	FILE* fp = fopen(xauthority, "ab+");
+
+	if (fp != NULL)
+	{
+		fclose(fp);
+	}
+
+	pid_t pid = fork();
+
+	if (pid == 0)
+	{
+		char cmd[1024];
+		snprintf(
+			cmd,
+			1024,
+			"%s add %s . `%s`",
+			config.xauth_cmd,
+			display_name,
+			config.mcookie_cmd);
+		execl(shell, shell, "-c", cmd, NULL);
+		exit(EXIT_SUCCESS);
+	}
+
+	int status;
+	waitpid(pid, &status, 0);
+}
+
+void xorg(
+	struct passwd* pwd,
+	const char* display_name,
+	const char* vt,
+	const char* desktop_cmd)
+{
+	reset_terminal(pwd);
+
+	// generate xauthority file
+	xauth(display_name, pwd->pw_shell, pwd->pw_dir);
+
+	// start xorg
+	pid_t pid = fork();
+
+	if (pid == 0)
+	{
+		char x_cmd[1024];
+		snprintf(
+			x_cmd,
+			1024,
+			"%s %s %s",
+			config.x_cmd,
+			display_name,
+			vt);
+		execl(pwd->pw_shell, pwd->pw_shell, "-c", x_cmd, NULL);
+		exit(EXIT_SUCCESS);
+	}
+
+	int ok;
+	xcb_connection_t* xcb;
+
+	do
+	{
+		xcb = xcb_connect(NULL, NULL);
+		ok = xcb_connection_has_error(xcb);
+		kill(pid, 0);
+	}
+	while((ok != 0) && (errno != ESRCH));
+
+	if (ok != 0)
+	{
+		return;
+	}
+
+	pid_t xorg_pid = fork();
+
+	if (xorg_pid == 0)
+	{
+		char de_cmd[1024];
+		snprintf(
+			de_cmd,
+			1024,
+			"%s %s",
+			config.x_cmd_setup,
+			desktop_cmd);
+		execl(pwd->pw_shell, pwd->pw_shell, "-c", de_cmd, NULL);
+		exit(EXIT_SUCCESS);
+	}
+
+	int status;
+	waitpid(xorg_pid, &status, 0);
+	reset_terminal(pwd);
+	xcb_disconnect(xcb);
+	kill(pid, 0);
+
+	if (errno != ESRCH)
+	{
+		kill(pid, SIGTERM);
+		waitpid(pid, &status, 0);
+	}
+}
+
+void wayland(
+	struct passwd* pwd,
+	const char* desktop_cmd)
+{
+	reset_terminal(pwd);
+	pid_t pid = fork();
+	
+	if (pid == 0)
+	{
+		char cmd[1024];
+		snprintf(cmd, 1024, "%s %s", config.wayland_cmd, desktop_cmd);
+		execl(pwd->pw_shell, pwd->pw_shell, "-c", cmd, NULL);
+		exit(EXIT_SUCCESS);
+	}
+
+	int status;
+	waitpid(pid, &status, 0);
+	reset_terminal(pwd);
+}
+
+void shell(struct passwd* pwd)
+{
+	reset_terminal(pwd);
+	pid_t pid = fork();
+
+	if (pid == 0)
+	{
+		const char* pos = strrchr(pwd->pw_shell, '/');
+		char args[1024];
+		args[0] = '-';
+
+		if (pos != NULL)
+		{
+			pos = pos + 1;
+		}
+		else
+		{
+			pos = pwd->pw_shell;
+		}
+
+		strncpy(args + 1, pos, 1024);
+		execl(pwd->pw_shell, args, NULL);
+		exit(EXIT_SUCCESS);
+	}
+
+	int status;
+	waitpid(pid, &status, 0);
+	reset_terminal(pwd);
+}
+
+void auth(
+	struct desktop* desktop,
+	struct text* login,
+	struct text* password,
+	struct term_buf* buf)
+{
+	int ok;
+
+	// open pam session
+	const char* creds[2] = {login->text, password->text};
+	struct pam_conv conv = {login_conv, creds};
+	struct pam_handle* handle;
+
+	ok = pam_start(config.service_name, NULL, &conv, &handle);
+
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+		pam_end(handle, ok);
+		return;
+	}
+
+	ok = pam_authenticate(handle, 0);
+
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+		pam_end(handle, ok);
+		return;
+	}
+
+	ok = pam_acct_mgmt(handle, 0);
+
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+		pam_end(handle, ok);
+		return;
+	}
+
+	ok = pam_setcred(handle, PAM_ESTABLISH_CRED);
+
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+		pam_end(handle, ok);
+		return;
+	}
+
+	ok = pam_open_session(handle, 0);
+
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+		pam_end(handle, ok);
+		return;
+	}
+
+	// clear the credentials
+	input_text_free(password);
+	input_text(password, config.max_password_len);
+
+	// get passwd structure
+	struct passwd* pwd = getpwnam(login->text);
+	endpwent();
+
+	if (pwd == NULL)
+	{
+		dgn_throw(DGN_PWNAM);
+		pam_end(handle, ok);
+		return;
+	}
+
+	// set user shell
+	if (pwd->pw_shell[0] == '\0')
+	{
+		setusershell();
+		
+		char* shell = getusershell();
+
+		if (shell != NULL)
+		{
+			strcpy(pwd->pw_shell, shell);
+		}
+
+		endusershell();
+	}
+
+	// restore regular terminal mode
+	tb_clear();
+	tb_present();
+	tb_shutdown();
+
+	// start desktop environment
+	pid_t pid = fork();
+
+	if (pid == 0)
+	{
+		// set user info 
+		ok = initgroups(pwd->pw_name, pwd->pw_gid);
+
+		if (ok != 0)
+		{
+			dgn_throw(DGN_USER_INIT);
+			exit(EXIT_FAILURE);
+		}
+
+		ok = setgid(pwd->pw_gid);
+
+		if (ok != 0)
+		{
+			dgn_throw(DGN_USER_GID);
+			exit(EXIT_FAILURE);
+		}
+
+		ok = setuid(pwd->pw_uid);
+
+		if (ok != 0)
+		{
+			dgn_throw(DGN_USER_UID);
+			exit(EXIT_FAILURE);
+		}
+
+		// get a display
+		int display_id = get_free_display();
+		char display_name[3];
+		char tty_id [3];
+		char vt[5];
+
+		snprintf(display_name, 3, ":%d", display_id);
+		snprintf(tty_id, 3, "%d", config.tty);
+		snprintf(vt, 5, "vt%d", config.tty);
+
+		// set env
+		env_init(pwd, display_name);
+
+		if (dgn_catch())
+		{
+			exit(EXIT_FAILURE);
+		}
+
+		// add pam variables
+		char** env = pam_getenvlist(handle);
+
+		for (u16 i = 0; env && env[i]; ++i)
+		{
+			putenv(env[i]);
+		}
+
+		// add xdg variables
+		env_xdg(tty_id, desktop->display_server[desktop->cur]);
+
+		// execute
+		int ok = chdir(pwd->pw_dir);
+
+		if (ok != 0)
+		{
+			dgn_throw(DGN_CHDIR);
+			exit(EXIT_FAILURE);
+		}
+
+		switch (desktop->display_server[desktop->cur])
+		{
+			case DS_WAYLAND:
+			{
+				wayland(pwd, desktop->cmd[desktop->cur]);
+				break;
+			}
+			case DS_SHELL:
+			{
+				shell(pwd);
+				break;
+			}
+			case DS_XINITRC:
+			case DS_XORG:
+			{
+				xorg(pwd, display_name, vt, desktop->cmd[desktop->cur]);
+				break;
+			}
+		}
+
+		exit(EXIT_SUCCESS);
+	}
+
+	// wait for the session to stop
+	int status;
+	waitpid(pid, &status, 0);
+
+	// reinit termbox
+	tb_init();
+	tb_select_output_mode(TB_OUTPUT_NORMAL);
+
+	// reload the desktop environment list on logout
+	input_desktop_free(desktop);
+	input_desktop(desktop);
+	desktop_load(desktop);
+
+	// close pam session
+	ok = pam_close_session(handle, 0);
+	
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+		pam_end(handle, ok);
+		return;
+	}
+
+	ok = pam_setcred(handle, PAM_DELETE_CRED);
+	
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+		pam_end(handle, ok);
+		return;
+	}
+
+	ok = pam_end(handle, 0);
+	
+	if (ok != PAM_SUCCESS)
+	{
+		pam_diagnose(ok, buf);
+	}
+}

src/login.h

@@ -0,0 +1,13 @@
+#ifndef H_LY_LOGIN
+#define H_LY_LOGIN
+
+#include "draw.h"
+#include "inputs.h"
+
+void auth(
+	struct desktop* desktop,
+	struct text* login,
+	struct text* password,
+	struct term_buf* buf);
+
+#endif

src/main.c

@@ -0,0 +1,296 @@
+#include "argoat.h"
+#include "configator.h"
+#include "dragonfail.h"
+#include "termbox.h"
+#include "ctypes.h"
+
+#include "draw.h"
+#include "inputs.h"
+#include "login.h"
+#include "utils.h"
+#include "config.h"
+
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#define ARG_COUNT 5
+// things you can define:
+// GIT_VERSION_STRING
+// RUNIT
+
+// global
+struct lang lang;
+struct config config;
+
+// args handles
+void arg_help(void* data, char** pars, const int pars_count)
+{
+	printf("RTFM\n");
+}
+
+void arg_version(void* data, char** pars, const int pars_count)
+{
+#ifdef GIT_VERSION_STRING
+	printf("Ly version %s\n", GIT_VERSION_STRING);
+#else
+	printf("Ly version unknown\n");
+#endif
+}
+
+// low-level error messages
+void log_init(char** log)
+{
+	log[DGN_OK] = lang.err_dgn_oob;
+	log[DGN_NULL] = lang.err_null;
+	log[DGN_ALLOC] = lang.err_alloc;
+	log[DGN_BOUNDS] = lang.err_bounds;
+	log[DGN_DOMAIN] = lang.err_domain; 
+	log[DGN_MLOCK] = lang.err_mlock;
+	log[DGN_XSESSIONS_DIR] = lang.err_xsessions_dir;
+	log[DGN_XSESSIONS_OPEN] = lang.err_xsessions_open;
+	log[DGN_PATH] = lang.err_path;
+	log[DGN_CHDIR] = lang.err_chdir;
+	log[DGN_PWNAM] = lang.err_pwnam;
+	log[DGN_USER_INIT] = lang.err_user_init;
+	log[DGN_USER_GID] = lang.err_user_gid;
+	log[DGN_USER_UID] = lang.err_user_uid;
+	log[DGN_PAM] = lang.err_pam;
+	log[DGN_HOSTNAME] = lang.err_hostname;
+}
+
+// ly!
+int main(int argc, char** argv)
+{
+	// init error lib
+	log_init(dgn_init());
+
+	// load config
+	config_defaults();
+	lang_defaults();
+
+	config_load();
+
+	if (strcmp(config.lang, "en") != 0)
+	{
+		lang_load();
+	}
+
+	// parse args
+	const struct argoat_sprig sprigs[ARG_COUNT] =
+	{
+		{NULL, 0, NULL, NULL},
+		{"help", 0, NULL, arg_help},
+		{"h", 0, NULL, arg_help},
+		{"version", 0, NULL, arg_version},
+		{"v", 0, NULL, arg_version},
+	};
+
+	struct argoat args = {sprigs, ARG_COUNT, NULL, 0, 0};
+	argoat_graze(&args, argc, argv);
+
+	// init inputs
+	struct desktop desktop;
+	struct text login;
+	struct text password;
+	input_desktop(&desktop);
+	input_text(&login, config.max_login_len);
+	input_text(&password, config.max_password_len);
+
+	if (dgn_catch())
+	{
+		config_free();
+		lang_free();
+		return 1;
+	}
+
+	void* input_structs[3] =
+	{
+		(void*) &desktop,
+		(void*) &login,
+		(void*) &password,
+	};
+
+	void (*input_handles[3]) (void*, struct tb_event*) =
+	{
+		handle_desktop,
+		handle_text,
+		handle_text,
+	};
+
+	desktop_load(&desktop);
+	load(&desktop, &login);
+
+	// start termbox
+	tb_init();
+	tb_select_output_mode(TB_OUTPUT_NORMAL);
+	tb_clear();
+
+	// init visible elements
+	struct tb_event event;
+	struct term_buf buf;
+	u8 active_input = config.default_input;
+
+	(*input_handles[active_input])(input_structs[active_input], NULL);
+
+	// init drawing stuff
+	draw_init(&buf);
+
+	if (config.animate)
+	{
+		animate_init(&buf);
+
+		if (dgn_catch())
+		{
+			config.animate = false;
+			dgn_reset();
+		}
+	}
+
+	// init state info
+	int error;
+	bool run = true;
+	bool update = true;
+	bool reboot = false;
+	bool shutdown = false;
+	u8 auth_fails = 0;
+
+	switch_tty(&buf);
+
+	// main loop
+	while (run)
+	{
+		if (update)
+		{
+			if (auth_fails < 10)
+			{
+				tb_clear();
+				animate(&buf);
+				draw_box(&buf);
+				draw_labels(&buf);
+				draw_f_commands();
+				draw_lock_state(&buf);
+				position_input(&buf, &desktop, &login, &password);
+				draw_desktop(&desktop);
+				draw_input(&login);
+				draw_input_mask(&password);
+				update = config.animate;
+			}
+			else
+			{
+				usleep(10000);
+				update = cascade(&buf, &auth_fails);
+			}
+
+			tb_present();
+		}
+
+		error = tb_peek_event(&event, config.min_refresh_delta);
+
+		if (error < 0)
+		{
+			continue;
+		}
+
+		if (event.type == TB_EVENT_KEY)
+		{
+			if (event.key == TB_KEY_F1)
+			{
+				shutdown = true;
+				break;
+			}
+			else if (event.key == TB_KEY_F2)
+			{
+				reboot = true;
+				break;
+			}
+			else if (event.key == TB_KEY_CTRL_C)
+			{
+				break;
+			}
+			else if ((event.key == TB_KEY_ARROW_UP) && (active_input > 0))
+			{
+				--active_input;
+				update = true;
+			}
+			else if (((event.key == TB_KEY_ARROW_DOWN)
+				|| (event.key == TB_KEY_ENTER))
+				&& (active_input < 2))
+			{
+				++active_input;
+				update = true;
+			}
+			else if (event.key == TB_KEY_TAB)
+			{
+				++active_input;
+
+				if (active_input > 2)
+				{
+					active_input = 0;
+				}
+
+				update = true;
+			}
+			else if (event.key == TB_KEY_ENTER)
+			{
+				save(&desktop, &login);
+				auth(&desktop, &login, &password, &buf);
+				update = true;
+
+				if (dgn_catch())
+				{
+					++auth_fails;
+
+					if (dgn_output_code() != DGN_PAM)
+					{
+						buf.info_line = dgn_output_log();
+					}
+
+					dgn_reset();
+				}
+				else
+				{
+					buf.info_line = lang.logout;
+				}
+
+				load(&desktop, &login);
+			}
+			else
+			{
+				(*input_handles[active_input])(
+					input_structs[active_input],
+					&event);
+				update = true;
+			}
+		}
+	}
+
+	// stop termbox
+	tb_shutdown();
+
+	// free inputs
+	input_desktop_free(&desktop);
+	input_text_free(&login);
+	input_text_free(&password);
+	free_hostname();
+
+	// unload config
+	draw_free(&buf);
+	lang_free();
+
+	if (shutdown)
+	{
+		execl("/bin/sh", "sh", "-c", config.shutdown_cmd, NULL);
+	}
+
+	if (reboot)
+	{
+		execl("/bin/sh", "sh", "-c", config.restart_cmd, NULL);
+	}
+
+	config_free();
+
+	return 0;
+}

src/utils.c

@@ -0,0 +1,245 @@
+#include "configator.h"
+#include "dragonfail.h"
+
+#include "inputs.h"
+#include "config.h"
+#include "utils.h"
+
+#include <dirent.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+#if defined(__DragonFly__) || defined(__FreeBSD__)
+	#include <sys/consio.h>
+#else // linux
+	#include <linux/vt.h>
+#endif
+
+void desktop_crawl(
+	struct desktop* target,
+	char* sessions,
+	enum display_server server)
+{
+	DIR* dir;
+	struct dirent* dir_info;
+	int ok;
+
+	ok = access(sessions, F_OK);
+
+	if (ok == -1)
+	{
+		dgn_throw(DGN_XSESSIONS_DIR);
+		return;
+	}
+
+	dir = opendir(sessions);
+
+	if (dir == NULL)
+	{
+		dgn_throw(DGN_XSESSIONS_OPEN);
+		return;
+	}
+
+	char* name = NULL;
+	char* exec = NULL;
+
+	struct configator_param map_desktop[] =
+	{
+		{"Exec", &exec, config_handle_str},
+		{"Name", &name, config_handle_str},
+	};
+
+	struct configator_param* map[] =
+	{
+		NULL,
+		map_desktop,
+	};
+
+	struct configator_param sections[] =	
+	{
+		{"Desktop Entry", NULL, NULL},
+	};
+
+	uint16_t map_len[] = {0, 2};
+	uint16_t sections_len = 1;
+
+	struct configator desktop_config;
+	desktop_config.map = map;
+	desktop_config.map_len = map_len;
+	desktop_config.sections = sections;
+	desktop_config.sections_len = sections_len;
+
+#if defined(NAME_MAX)
+	char path[NAME_MAX];
+#elif defined(_POSIX_PATH_MAX)
+	char path[_POSIX_PATH_MAX];
+#else
+	char path[1024];
+#endif
+
+	dir_info = readdir(dir);
+
+	while (dir_info != NULL)
+	{
+		if ((dir_info->d_name)[0] == '.')
+		{
+			dir_info = readdir(dir);
+			continue;
+		}
+
+		snprintf(path, (sizeof (path)) - 1, "%s/", sessions);
+		strncat(path, dir_info->d_name, (sizeof (path)) - 1);
+		configator(&desktop_config, path);
+
+		if ((name != NULL) && (exec != NULL))
+		{
+			input_desktop_add(target, name, exec, server);
+		}
+
+		name = NULL;
+		exec = NULL;
+		dir_info = readdir(dir);
+	}
+
+	closedir(dir);
+}
+
+void desktop_load(struct desktop* target)
+{
+	desktop_crawl(target, config.waylandsessions, DS_WAYLAND);
+	desktop_crawl(target, config.xsessions, DS_XORG);
+}
+
+static char* hostname_backup = NULL;
+
+void hostname(char** out)
+{
+	if (hostname_backup != NULL)
+	{
+		*out = hostname_backup;
+		return;
+	}
+
+	int maxlen = sysconf(_SC_HOST_NAME_MAX);
+
+	if (maxlen < 0)
+	{
+		maxlen = _POSIX_HOST_NAME_MAX;
+	}
+
+	hostname_backup = malloc(maxlen + 1);
+
+	if (hostname_backup == NULL)
+	{
+		dgn_throw(DGN_ALLOC);
+		return;
+	}
+
+	if (gethostname(hostname_backup, maxlen) < 0)
+	{
+		dgn_throw(DGN_HOSTNAME);
+		return;
+	}
+
+	hostname_backup[maxlen] = '\0';
+	*out = hostname_backup;
+}
+
+void free_hostname()
+{
+	free(hostname_backup);
+}
+
+void switch_tty(struct term_buf* buf)
+{
+	FILE* console = fopen(config.console_dev, "w");
+
+	if (console == NULL)
+	{
+		buf->info_line = lang.err_console_dev;
+		return;
+	}
+
+	int fd = fileno(console);
+
+	ioctl(fd, VT_ACTIVATE, config.tty);
+	ioctl(fd, VT_WAITACTIVE, config.tty);
+
+	fclose(console);
+}
+
+void save(struct desktop* desktop, struct text* login)
+{
+	if (config.save)
+	{
+		FILE* fp = fopen(config.save_file, "wb+");
+
+		if (fp != NULL)
+		{
+			fprintf(fp, "%s\n%d", login->text, desktop->cur);
+			fclose(fp);
+		}
+	}
+}
+
+void load(struct desktop* desktop, struct text* login)
+{
+	if (!config.load)
+	{
+		return;
+	}
+
+	FILE* fp = fopen(config.save_file, "rb");
+
+	if (fp == NULL)
+	{
+		return;
+	}
+
+	char* line = malloc(config.max_login_len + 1);
+
+	if (line == NULL)
+	{
+		fclose(fp);
+		return;
+	}
+
+	if (fgets(line, config.max_login_len + 1, fp))
+	{
+		int len = strlen(line);
+		strncpy(login->text, line, login->len);
+
+		if (len == 0)
+		{
+			login->end = login->text;
+		}
+		else
+		{
+			login->end = login->text + len - 1;
+			login->text[len - 1] = '\0';
+		}
+	}
+	else
+	{
+		fclose(fp);
+		free(line);
+		return;
+	}
+
+	if (fgets(line, config.max_login_len + 1, fp))
+	{
+		int saved_cur = abs(atoi(line));
+
+		if (saved_cur < desktop->len)
+		{
+			desktop->cur = saved_cur;
+		}
+	}
+
+	fclose(fp);
+	free(line);
+}

src/utils.h

@@ -0,0 +1,15 @@
+#ifndef H_LY_UTILS
+#define H_LY_UTILS
+
+#include "draw.h"
+#include "inputs.h"
+#include "config.h"
+
+void desktop_load(struct desktop* target);
+void hostname(char** out);
+void free_hostname();
+void switch_tty(struct term_buf* buf);
+void save(struct desktop* desktop, struct text* login);
+void load(struct desktop* desktop, struct text* login);
+
+#endif