modules/private/system/quatresaisons.nix

   1 { config, pkgs, lib, ... }:
   2 let
   3   serverSpecificConfig = config.myEnv.serverSpecific.quatresaisons;
   4   yarnModules = pkgs.yarn2nix-moretea.mkYarnModules rec {
   5     name = "landing";
   6     pname = name;
   7     version = "v1.0.0";
   8     packageJSON = "${pkgs.sources.webapps-landing}/package.json";
   9     yarnLock = "${pkgs.sources.webapps-landing}/yarn.lock";
  10     yarnNix = ../websites/tools/tools/landing/yarn-packages.nix;
  11   };
  12   toLanding = landingConfig: pkgs.stdenv.mkDerivation rec {
  13     pname = "landing";
  14     version = "v1.0.0";
  15     src = pkgs.sources.webapps-landing;
  16
  17     buildInputs = [ yarnModules pkgs.yarn2nix-moretea.yarn ];
  18     configurePhase = ''
  19       ln -s ${yarnModules}/node_modules .
  20     '';
  21     buildPhase = ''
  22       yarn build
  23     '';
  24     installPhase = ''
  25       cp -a dist $out
  26       cp -f ${landingConfig} $out/config.yml
  27       ln -s service-worker.js $out/worker.js
  28     '';
  29   };
  30   normalUsers = serverSpecificConfig.users;
  31   userquotas = pkgs.writeScriptBin "user_quotas" ''
  32     #!/usr/bin/env bash
  33     set -euo pipefail
  34
  35     if [ `whoami` != "root" ]; then
  36       list=$(id -u)
  37     else
  38       list="${builtins.concatStringsSep " " (lib.mapAttrsToList (n: v: builtins.toString v.uid) normalUsers)}"
  39     fi
  40
  41     get_size () {
  42       user=$1
  43       home=$((du -sbx /home/$user 2>/dev/null | cut -d" " -f1) || echo 0)
  44       nextcloud=$((du -sbx /home/var_lib/nextcloud/data/$user 2>/dev/null | cut -d"     " -f1) || echo 0)
  45       echo "Home: $(numfmt --to=iec "$home")"
  46       echo "Nextcloud: $(numfmt --to=iec "$nextcloud")"
  47       echo "Raw: $(($home + $nextcloud))"
  48     }
  49
  50     for user in $list; do
  51       group=$(id -ng "$user")
  52       size=$(get_size "$group")
  53       total=$(echo "$size" | grep ^Raw | cut -d" " -f2)
  54       decomp="    $group: $(numfmt --to=iec "$total")"
  55       decomp="$decomp;$(echo "$size" | grep -v ^Raw | sed -e "s/^/        /")"
  56
  57       sponsored=$(getent group $group | cut -d':' -f4)
  58       IFS=","
  59       for subuser in $sponsored; do
  60         size=$(get_size "$subuser")
  61         totalsub=$(echo "$size" | grep ^Raw | cut -d" " -f2)
  62         total=$(($total + $totalsub))
  63         decomp="$decomp;    $subuser: $(numfmt --to=iec "$totalsub")"
  64         decomp="$decomp;$(echo "$size" | grep -v ^Raw | sed -e "s/^/        /")"
  65       done
  66       echo "$group: $(numfmt --to=iec "$total")"
  67       echo "$decomp" | tr ";" "\n"
  68     done
  69   '';
  70   sponsoredUser = pkgs.writeScriptBin "sponsored_user" ''
  71     #!/usr/bin/env bash
  72
  73     set -euo pipefail
  74     [ -z "''${SUDO_USER+x}" ] && echo "Must be run with sudo" && exit 1
  75
  76     mygroup=$(id -ng $SUDO_USER)
  77
  78     sponsored=$(getent group $mygroup | cut -d':' -f4)
  79
  80     echo "Sponsored users: ''${sponsored:-<none>}"
  81
  82     log () {
  83       touch /var/log/sponsored_users
  84       chmod go-rwx /var/log/sponsored_users
  85       echo "`date` $mygroup $1" | LANG=C cat -v | tr '\012' ' ' | sed 's:$:\x0a:' >> /var/log/sponsored_users
  86     }
  87
  88     create_user () {
  89       log "creates $1: $2"
  90       useradd -m -G users,$mygroup -g $mygroup -p '!' "$1"
  91       touch /var/lib/nixos/sponsored_users
  92       chmod go-rwx /var/lib/nixos/sponsored_users
  93       echo "$mygroup $1 $2" >> /var/lib/nixos/sponsored_users
  94       (${pkgs.openldap}/bin/ldapadd -c -D cn=root,dc=salle-s,dc=org \
  95         -y ${config.secrets.fullPaths."ldap/sync_password"} 2>/dev/null >/dev/null || true) <<EOF
  96     dn: uid=$1,uid=$mygroup,ou=users,dc=salle-s,dc=org
  97     objectClass: inetOrgPerson
  98     cn: $1
  99     description:: $(echo -n "$2" | base64)
 100     sn: $1
 101     uid: $1
 102     EOF
 103       while ! passwd "$1"; do
 104         echo "please give an initial password"
 105       done
 106     }
 107
 108     delete_user () {
 109       IFS=",";
 110       for u in $sponsored; do
 111       if [ "$u" = "$1" ]; then
 112         log "deletes $1"
 113         userdel -r "$1"
 114         sed -i -e "/^$mygroup $1/d" /var/lib/nixos/sponsored_users
 115         ${pkgs.openldap}/bin/ldapdelete -D cn=root,dc=salle-s,dc=org \
 116           -y ${config.secrets.fullPaths."ldap/sync_password"} \
 117           "uid=$1,uid=$mygroup,ou=users,dc=salle-s,dc=org"
 118         echo "deleted"
 119         exit 0
 120       fi
 121       done
 122
 123       echo "User does not exist or does not belong to you";
 124       exit 1
 125     }
 126
 127     reset_password () {
 128       IFS=",";
 129       for u in $sponsored; do
 130       if [ "$u" = "$1" ]; then
 131         log "resets password for $1"
 132         passwd "$1"
 133         exit 0
 134       fi
 135       done
 136
 137       echo "User does not exist or does not belong to you";
 138       exit 1
 139     }
 140
 141     reset_ldap_password () {
 142       if [ "$1" = "$mygroup" ]; then
 143         log "resets web password"
 144         ${pkgs.openldap}/bin/ldappasswd -D cn=root,dc=salle-s,dc=org \
 145           -y ${config.secrets.fullPaths."ldap/sync_password"} \
 146           -S "uid=$mygroup,ou=users,dc=salle-s,dc=org"
 147       else
 148         IFS=",";
 149         for u in $sponsored; do
 150         if [ "$u" = "$1" ]; then
 151           log "resets web password of $1"
 152           ${pkgs.openldap}/bin/ldappasswd -D cn=root,dc=salle-s,dc=org \
 153             -y ${config.secrets.fullPaths."ldap/sync_password"} \
 154             -S "uid=$1,uid=$mygroup,ou=users,dc=salle-s,dc=org"
 155           exit 0
 156         fi
 157         done
 158
 159         echo "User does not exist or does not belong to you";
 160         exit 1
 161       fi
 162     }
 163
 164     show_help () {
 165       echo "sponsored_users create username realname"
 166       echo "    create a new sub-user attached to your account"
 167       echo "sponsored_users (delete|reset_password) username"
 168       echo "    delete a sub-user attached to your account or reset his password"
 169       echo "sponsored_users reset_ldap_password username"
 170       echo "    reset the web password of a sub-user or yourself"
 171     }
 172
 173     [ -z "''${1+x}" -o -z "''${2+x}" ] && { show_help ; exit 0; }
 174     action="$1"
 175     username="$2"
 176     shift
 177     shift
 178
 179     case "$action" in
 180       create)
 181         [ -z "''${1+x}" ] && { show_help ; echo "Conformément à la charte https://4c.salle-s.org/charte veuillez préciser le nom réel du futur utilisateur du compte $username, juste pour root." ; exit 1; }
 182         create_user "$username" "$*";
 183         ;;
 184       delete)
 185         delete_user "$username";
 186         ;;
 187       reset_password)
 188         reset_password "$username";
 189         ;;
 190       reset_ldap_password)
 191         reset_ldap_password "$username";
 192         ;;
 193       *)
 194         show_help
 195         ;;
 196     esac
 197   '';
 198 in
 199 {
 200   deployment = {
 201     targetUser = "root";
 202     targetHost = lib.head config.hostEnv.ips.main.ip4;
 203     substituteOnDestination = true;
 204   };
 205   # ssh-keyscan quatresaison | nix-shell -p ssh-to-age --run ssh-to-age
 206   secrets.ageKeys = [ "age1yz8u6xvh2fltvyp96ep8crce3qx4tuceyhun6pwddfe0uvcrkarscxl7e7" ];
 207
 208   programs.ssh.package = pkgs.openssh.overrideAttrs(old: {
 209     PATH_PASSWD_PROG = "/run/wrappers/bin/passwd";
 210     buildFlags = [ "SSH_KEYSIGN=/run/wrappers/bin/ssh-keysign" ];
 211   });
 212
 213   imports = builtins.attrValues (import ../..) ++
 214     [ ./quatresaisons/nextcloud.nix ./quatresaisons/databases.nix ];
 215
 216   myEnv = import ../../../nixops/secrets/environment.nix;
 217
 218   fileSystems = {
 219     "/"     = { device = "/dev/disk/by-uuid/865931b4-c5cc-439f-8e42-8072c7a30634"; fsType = "ext4"; };
 220     "/home" = { device = "/dev/disk/by-uuid/76020bc4-5b88-464c-8952-9a59072c597f"; fsType = "ext4"; neededForBoot = true; };
 221     "/boot" = { device = "/dev/disk/by-uuid/0fb8421a-61e5-4ed5-a795-4dd3a9b2152a"; fsType = "ext4"; };
 222     "/var/lib" = { device = "/home/var_lib"; fsType = "none"; options = [ "defaults,bind" ]; };
 223   };
 224   powerManagement.cpuFreqGovernor = "powersave";
 225   hardware.enableRedistributableFirmware = true;
 226
 227   boot.initrd.availableKernelModules = [ "ahci" "megaraid_sas" "sd_mod" ];
 228   boot.initrd.kernelModules = [ "dm-snapshot" ];
 229   boot.kernelModules = [ "kvm-intel" ];
 230
 231   boot.loader.grub.enable = true;
 232   boot.loader.grub.version = 2;
 233   boot.loader.grub.device = "/dev/sda";
 234
 235   networking.firewall.enable = false;
 236   networking.firewall.allowedTCPPorts = [ 80 443 ];
 237   networking.useDHCP = false;
 238   networking.interfaces.eth0.useDHCP = true;
 239   networking.interfaces.eth0.ipv6.addresses = [
 240     { address = pkgs.lib.head config.hostEnv.ips.main.ip6; prefixLength = 64; }
 241   ];
 242   networking.defaultGateway6 = { address = "fe80::1"; interface = "eth0"; };
 243   services.udev.extraRules = ''
 244     ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="c8:60:00:8b:2f:f0", NAME="eth0"
 245   '';
 246   security.pam.services.chage.text = ''
 247     auth      sufficient pam_rootok.so
 248     auth      required   pam_unix.so
 249     account   required   pam_unix.so
 250     session   required   pam_unix.so
 251     password  required   pam_permit.so
 252   '';
 253   security.pam.services.sshd.makeHomeDir = true;
 254   security.pam.services.passwd_default = {};
 255   security.pam.services.passwd.text = ''
 256     password        required        pam_cracklib.so enforce_for_root difok=2 minlen=8 dcredit=2 ocredit=2 retry=3
 257   '' + config.security.pam.services.passwd_default.text;
 258
 259   system.activationScripts.ldapSync = {
 260     deps = [ "secrets" "users" ];
 261     text =
 262       let
 263         com = "-D cn=root,dc=salle-s,dc=org -y ${config.secrets.fullPaths."ldap/sync_password"}";
 264       in ''
 265       # Add users
 266       ${pkgs.openldap}/bin/ldapadd -c ${com} -f ${config.secrets.fullPaths."ldap/ldaptree.ldif"} 2>/dev/null >/dev/null || true
 267
 268       # Remove obsolete users
 269       ${pkgs.openldap}/bin/ldapsearch -LLL ${com} -s one -b "ou=users,dc=salle-s,dc=org" "uid" |\
 270         grep "^uid" | ${pkgs.gnused}/bin/sed -e "s/uid: //" | while read ldapuser; do
 271
 272         for user in ${builtins.concatStringsSep " " (builtins.attrNames normalUsers)}; do
 273           if [ "$user" = "$ldapuser" ]; then
 274             continue 2
 275           fi
 276         done
 277         ${pkgs.openldap}/bin/ldapdelete -r ${com} uid=$ldapuser,ou=users,dc=salle-s,dc=org
 278       done
 279
 280       # Subusers
 281       if [ -f /var/lib/nixos/sponsored_users ]; then
 282         cat /var/lib/nixos/sponsored_users | while read mainUser subUser name; do
 283           (${pkgs.openldap}/bin/ldapadd -c ${com} 2>/dev/null >/dev/null || true) <<EOF
 284       dn: uid=$subUser,uid=$mainUser,ou=users,dc=salle-s,dc=org
 285       objectClass: inetOrgPerson
 286       cn: $subUser
 287       description:: $(echo -n "$name" | base64)
 288       sn: $subUser
 289       uid: $subUser
 290       EOF
 291         done
 292       fi
 293     '';
 294   };
 295
 296   secrets.keys = {
 297     "ldap/sync_password" = {
 298       permissions = "0400";
 299       text = serverSpecificConfig.ldap_sync_password;
 300     };
 301     "ldap/ldaptree.ldif" = {
 302       permissions = "0400";
 303       text = serverSpecificConfig.ldap_service_users
 304         + (builtins.concatStringsSep "\n" (lib.mapAttrsToList (n: v: ''
 305         dn: uid=${n},ou=users,dc=salle-s,dc=org
 306         objectClass: inetOrgPerson
 307         cn: ${n}
 308         description: ${v._meta.name or n} ${v._meta.email}
 309         sn: ${n}
 310         uid: ${n}
 311       '') normalUsers));
 312     };
 313   };
 314
 315   myServices.monitoring.enable = true;
 316   myServices.certificates.enable = true;
 317   users.mutableUsers = true;
 318   system.stateVersion = "21.03";
 319   programs.zsh.enable = true;
 320
 321   users.motd = ''
 322     Bienvenue sur quatresaisons.salle-s.org !
 323
 324     * Charte :
 325       https://4c.salle-s.org/charte
 326     * Gérer les utilisateurs unix additionnels :
 327       sudo sponsored_user -h
 328     * Applications web :
 329       * tableau de bord : https://4c.salle-s.org/
 330       * nextcloud : https://nextcloud.4c.salle-s.org/
 331   '';
 332
 333   users.groups =
 334     lib.mapAttrs (n: v: { gid = v.uid; }) normalUsers
 335     // { wwwrun = { gid = config.ids.gids.wwwrun; }; };
 336   users.users =
 337     let
 338       defaultNormal = n: {
 339         group = n;
 340         extraGroups = [ "users" ];
 341         isNormalUser = true;
 342       };
 343     in
 344       lib.mapAttrs (n: v: defaultNormal n // (lib.filterAttrs (k: _: k != "_meta") v)) normalUsers
 345       // {
 346         sponsored-separator = {
 347           uid = 10000;
 348           group = "users";
 349           home = "/var/empty";
 350           extraGroups = [];
 351           isNormalUser = true;
 352           createHome = false;
 353         };
 354         wwwrun = {
 355           group = "wwwrun";
 356           description = "Apache httpd user";
 357           uid = config.ids.uids.wwwrun;
 358           extraGroups = [ "keys" ];
 359         };
 360       };
 361
 362   system.activationScripts.usersPost = {
 363     deps = [ "users" "groups" ];
 364     text = builtins.concatStringsSep "\n" (lib.mapAttrsToList (n: v: ''
 365       if getent shadow "${n}" | grep -q '^${n}:${v.initialHashedPassword or "!"}:1'; then
 366         chage -d 0 "${n}"
 367         [ '${v.initialHashedPassword or "!"}' = '!' ] && passwd -d "${n}"
 368       fi
 369     '') normalUsers);
 370   };
 371   security.sudo.extraRules = [
 372     {
 373       commands = [
 374         { command = "${sponsoredUser}/bin/sponsored_user"; options = [ "NOPASSWD" ]; }
 375         { command = "/run/current-system/sw/bin/sponsored_user"; options = [ "NOPASSWD" ]; }
 376       ];
 377       users = builtins.attrNames normalUsers;
 378       runAs = "root";
 379     }
 380   ];
 381
 382   environment.systemPackages = [
 383     sponsoredUser userquotas
 384     pkgs.git pkgs.vim pkgs.rsync pkgs.strace pkgs.home-manager
 385     pkgs.telnet pkgs.htop pkgs.iftop pkgs.bind.dnsutils pkgs.httpie
 386     pkgs.iotop pkgs.whois pkgs.ngrep pkgs.tcpdump pkgs.tshark
 387     pkgs.tcpflow pkgs.nmap pkgs.p0f pkgs.socat pkgs.lsof pkgs.psmisc
 388     pkgs.openssl pkgs.wget pkgs.pv pkgs.smartmontools pkgs.youtube-dl
 389     pkgs.unzip pkgs.octave pkgs.feh pkgs.xv pkgs.sshfs pkgs.gdb
 390     pkgs.file pkgs.lynx pkgs.tmux pkgs.awesome pkgs.libreoffice
 391     pkgs.evince pkgs.firefox pkgs.xcalib pkgs.python3 pkgs.python2
 392     pkgs.xorg.xkbcomp pkgs.subversion pkgs.xclip pkgs.imagemagick
 393     pkgs.bc pkgs.sox pkgs.zip pkgs.gnome3.gnome-screenshot
 394     pkgs.datadog-process-agent
 395   ];
 396
 397   services.websites.env.production = {
 398     enable = true;
 399     adminAddr = "httpd@immae.eu";
 400     httpdName = "Prod";
 401     modules = [ "http2" "deflate" "filter" ];
 402     extraConfig = [
 403       ''
 404         LogFormat "%{Host}i:%p %h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combinedVhost
 405         Protocols h2 http/1.1
 406         AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript
 407       '' ];
 408     ips =
 409       let ips = config.hostEnv.ips.main;
 410       in (ips.ip4 or []) ++ (ips.ip6 or []);
 411
 412     fallbackVhost = {
 413       certName    = "quatresaisons";
 414       hosts       = [ "quatresaisons.immae.eu" ];
 415       root        = pkgs.runCommand "empty" {} "mkdir $out && touch $out/index.html";
 416       extraConfig = [ "DirectoryIndex index.html" ];
 417     };
 418     vhostConfs.salle-s = {
 419       certName = "quatresaisons";
 420       addToCerts = true;
 421       hosts = [ "salle-s.org" ];
 422       root = toLanding ./quatresaisons/landing.yml;
 423       extraConfig = [
 424         ''
 425           <Directory ${toLanding ./quatresaisons/landing.yml}>
 426             AllowOverride None
 427             Require all granted
 428             DirectoryIndex index.html
 429           </Directory>
 430       ''
 431       ];
 432     };
 433     vhostConfs.tools = {
 434       certName = "quatresaisons";
 435       addToCerts = true;
 436       hosts = [ "4c.salle-s.org" "quatresaisons.salle-s.org" "quatre-saisons.salle-s.org" ];
 437       root = toLanding ./quatresaisons/landing_4c.yml;
 438       extraConfig = [
 439         ''
 440           Alias /charte ${serverSpecificConfig.charte_path}
 441           <Directory ${serverSpecificConfig.charte_path}>
 442             AllowOverride None
 443             Require all granted
 444             DirectoryIndex index.html index.txt
 445           </Directory>
 446
 447           <Directory ${toLanding ./quatresaisons/landing_4c.yml}>
 448             AllowOverride None
 449             Require all granted
 450             DirectoryIndex index.html
 451           </Directory>
 452       ''
 453       ];
 454     };
 455   };
 456   system.activationScripts.httpd = ''
 457     install -d -m 0750 -o wwwrun -g wwwrun /var/lib/php
 458     install -d -m 0750 -o wwwrun -g wwwrun /var/lib/php/sessions
 459   '';
 460
 461   services.phpfpm = {
 462     phpOptions = ''
 463       session.save_path = "/var/lib/php/sessions"
 464       post_max_size = 20M
 465       ; 15 days (seconds)
 466       session.gc_maxlifetime = 1296000
 467       ; 30 days (minutes)
 468       session.cache_expire = 43200
 469       '';
 470     settings = {
 471       log_level = "notice";
 472     };
 473   };
 474
 475 }