diff options
Diffstat (limited to 'krebs/3modules')
-rw-r--r-- | krebs/3modules/default.nix | 407 | ||||
-rw-r--r-- | krebs/3modules/git.nix | 486 | ||||
-rw-r--r-- | krebs/3modules/github-hosts-sync.nix | 83 | ||||
-rw-r--r-- | krebs/3modules/nginx.nix | 72 | ||||
-rw-r--r-- | krebs/3modules/retiolum.nix | 226 | ||||
-rw-r--r-- | krebs/3modules/urlwatch.nix | 138 |
6 files changed, 1412 insertions, 0 deletions
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix new file mode 100644 index 000000000..cd9cd732b --- /dev/null +++ b/krebs/3modules/default.nix @@ -0,0 +1,407 @@ +{ config, lib, ... }: + +with import ../4lib { inherit lib; }; +let + cfg = config.krebs; + + out = { + imports = [ + ./github-hosts-sync.nix + ./git.nix + ./nginx.nix + ./retiolum.nix + ./urlwatch.nix + ]; + options.krebs = api; + config = mkIf cfg.enable imp; + }; + + api = { + enable = mkEnableOption "krebs"; + + build = mkOption { + type = types.submodule ({ config, ... }: { + options = { + target = mkOption { + type = with types; nullOr str; + default = null; + }; + deps = mkOption { + type = with types; attrsOf (submodule { + options = { + url = mkOption { + type = str; + }; + rev = mkOption { + type = nullOr str; + default = null; + }; + }; + }); + default = {}; + }; + script = mkOption { + type = types.str; + default = '' + #! /bin/sh + set -efux + + target=${escapeShellArg cfg.build.target} + + push(){( + src=$1/ + dst=$target:$2 + rsync \ + --exclude .git \ + --exclude .graveyard \ + --exclude old \ + --rsync-path="mkdir -p \"$dst\" && rsync" \ + --usermap=\*:0 \ + --groupmap=\*:0 \ + --delete-excluded \ + -vrLptgoD \ + "$src" "$dst" + )} + + ${concatStrings (mapAttrsToList (name: { url, rev, ... }: + optionalString (rev == null) '' + push ${toString (map escapeShellArg [ + "${url}" + "/root/src/${name}" + ])} + '') config.deps)} + + exec ssh -S none "$target" /bin/sh <<\EOF + set -efux + fetch(){( + url=$1 + rev=$2 + dst=$3 + mkdir -p "$dst" + cd "$dst" + if ! test -e .git; then + git init + fi + if ! cur_url=$(git config remote.origin.url 2>/dev/null); then + git remote add origin "$url" + elif test "$cur_url" != "$url"; then + git remote set-url origin "$url" + fi + if test "$(git rev-parse --verify HEAD 2>/dev/null)" != "$rev"; then + git fetch origin + git checkout "$rev" -- . + git checkout -q "$rev" + git submodule init + git submodule update + fi + git clean -dxf + )} + + ${concatStrings (mapAttrsToList (name: { url, rev, ... }: + optionalString (rev != null) '' + fetch ${toString (map escapeShellArg [ + url + rev + "/root/src/${name}" + ])} + '') config.deps)} + + echo build system... + profile=/nix/var/nix/profiles/system + NIX_PATH=/root/src \ + nix-env \ + -Q \ + -p "$profile" \ + -f '<stockholm>' \ + --set \ + -A system \ + --argstr user-name ${escapeShellArg cfg.build.user.name} \ + --argstr system-name ${escapeShellArg cfg.build.host.name} + + exec "$profile"/bin/switch-to-configuration switch + EOF + ''; + }; + host = mkOption { + type = types.host; + }; + user = mkOption { + type = types.user; + }; + }; + }); + # Define defaul value, so unset values of the submodule get reported. + default = {}; + }; + + dns = { + providers = mkOption { + # TODO with types; tree dns.label dns.provider, so we can merge. + # Currently providers can only be merged if aliases occur just once. + type = with types; attrsOf unspecified; + }; + }; + + hosts = mkOption { + type = with types; attrsOf host; + }; + + users = mkOption { + type = with types; attrsOf user; + }; + + # XXX is there a better place to define search-domain? + # TODO search-domains :: listOf hostname + search-domain = mkOption { + type = types.hostname; + default = "retiolum"; + }; + }; + + imp = mkMerge [ + { krebs = lass-imp; } + { krebs = makefu-imp; } + { krebs = tv-imp; } + { + krebs.dns.providers = { + de.krebsco = "ovh"; + internet = "hosts"; + retiolum = "hosts"; + }; + + # XXX This overlaps with krebs.retiolum + networking.extraHosts = concatStringsSep "\n" (flatten ( + mapAttrsToList (hostname: host: + mapAttrsToList (netname: net: + let + aliases = toString (unique (longs ++ shorts)); + providers = dns.split-by-provider net.aliases cfg.dns.providers; + longs = providers.hosts; + shorts = map (removeSuffix ".${cfg.search-domain}") longs; + in + map (addr: "${addr} ${aliases}") net.addrs + ) host.nets + ) cfg.hosts + )); + } + ]; + + lass-imp = { + hosts = addNames { + }; + users = addNames { + lass = { + pubkey = readFile ../../Zpubkeys/lass.ssh.pub; + }; + uriel = { + pubkey = readFile ../../Zpubkeys/uriel.ssh.pub; + }; + }; + }; + + makefu-imp = { + hosts = addNames { + pnp = { + cores = 1; + dc = "makefu"; #vm on 'omo' + nets = { + retiolum = { + addrs4 = ["10.243.0.210"]; + addrs6 = ["42:f9f1:0000:0000:0000:0000:0000:0001"]; + aliases = [ + "pnp.retiolum" + "cgit.pnp.retiolum" + ]; + tinc.pubkey = '' + -----BEGIN RSA PUBLIC KEY----- + MIIBCgKCAQEAugkgEK4iy2C5+VZHwhjj/q3IOhhazE3TYHuipz37KxHWX8ZbjH+g + Ewtm79dVysujAOX8ZqV8nD8JgDAvkIZDp8FCIK0/rgckhpTsy1HVlHxa7ECrOS8V + pGz4xOxgcPFRbv5H2coHtbnfQc4GdA5fcNedQ3BP3T2Tn7n/dbbVs30bOP5V0EMR + SqZwNmtqaDQxOvjpPg9EoHvAYTevrpbbIst9UzCyvmNli9R+SsiDrzEPgB7zOc4T + TG12MT+XQr6JUu4jPpzdhb6H/36V6ADCIkBjzWh0iSfWGiFDQFinD+YSWbA1NOTr + Qtd1I3Ov+He7uc2Z719mb0Og2kCGnCnPIwIDAQAB + -----END RSA PUBLIC KEY----- + ''; + }; + }; + }; + }; + users = addNames { + makefu = { + mail = "root@euer.krebsco.de"; + pubkey = readFile ../../Zpubkeys/makefu_arch.ssh.pub; + }; + }; + }; + + tv-imp = { + dns.providers = { + de.viljetic = "regfish"; + }; + hosts = addNames { + cd = { + cores = 2; + dc = "tv"; #dc = "cac"; + nets = rec { + internet = { + addrs4 = ["162.219.7.216"]; + aliases = [ + "cd.internet" + "cd.viljetic.de" + "cgit.cd.viljetic.de" + "cd.krebsco.de" + ]; + }; + retiolum = { + via = internet; + addrs4 = ["10.243.113.222"]; + addrs6 = ["42:4522:25f8:36bb:8ccb:0150:231a:2af3"]; + aliases = [ + "cd.retiolum" + "cgit.cd.retiolum" + ]; + tinc.pubkey = '' + -----BEGIN RSA PUBLIC KEY----- + MIICCgKCAgEAvmCBVNKT/Su4v9nl/Nm3STPo5QxWPg7xEkzIs3Oh39BS8+r6/7UQ + rebib7mczb+ebZd+Rg2yFoGrWO8cmM0VcLy5bYRMK7in8XroLEjWecNNM4TRfNR4 + e53+LhcPdkxo0A3/D+yiut+A2Mkqe+4VXDm/JhAiAYkZTn7jUtj00Atrc7CWW1gN + sP3jIgv4+CGftdSYOB4dm699B7OD9XDLci2kOaFqFl4cjDYUok03G0AduUlRx10v + CKbKOTIdm8C36A902/3ms+Hyzkruu+VagGIZuPSwqXHJPCu7Ju+jarKQstMmpQi0 + PubweWDL0o/Dfz2qT3DuL4xDecIvGE6kv3m41hHJYiK+2/azTSehyPFbsVbL7w0V + LgKN3usnZNcpTsBWxRGT7nMFSnX2FLDu7d9OfCuaXYxHVFLZaNrpccOq8NF/7Hbk + DDW81W7CvLyJDlp0WLnAawSOGTUTPoYv/2wAapJ89i8QGCueGvEc6o2EcnBVMFEW + ejWTQzyD816f4RsplnrRqLVlIMbr9Q/n5TvlgjjhX7IMEfMy4+7qLGRQkNbFzgwK + jxNG2fFSCjOEQitm0gAtx7QRIyvYr6c7/xiHz4AwxYzBmvQsL/OK57NO4+Krwgj5 + Vk8TQ2jGO7J4bB38zaxK+Lrtfl8i1AK1171JqFMhOc34JSJ7T4LWDMECAwEAAQ== + -----END RSA PUBLIC KEY----- + ''; + }; + }; + }; + mkdir = { + cores = 1; + dc = "tv"; #dc = "cac"; + nets = rec { + internet = { + addrs4 = ["162.248.167.241"]; + aliases = [ + "mkdir.internet" + ]; + }; + retiolum = { + via = internet; + addrs4 = ["10.243.113.223"]; + addrs6 = ["42:4522:25f8:36bb:8ccb:0150:231a:2af4"]; + aliases = [ + "mkdir.retiolum" + "cgit.mkdir.retiolum" + ]; + tinc.pubkey = '' + -----BEGIN RSA PUBLIC KEY----- + MIIBCgKCAQEAuyfM+3od75zOYXqnqRMAt+yp/4z/vC3vSWdjUvEmCuM23c5BOBw+ + dKqbWoSPTzOuaQ0szdL7a6YxT+poSUXd/i3pPz59KgCl192rd1pZoJKgvoluITev + voYSP9rFQOUrustfDb9qKW/ZY95cwdCvypo7Vf4ghxwDCnlmyCGz7qXTJMLydNKF + 2PH9KiY4suv15sCg/zisu+q0ZYQXUc1TcgpoIYBOftDunOJoNdbti+XjwWdjGmJZ + Bn4GelsrrpwJFvfDmouHUe8GsD7nTgbZFtiJbKfCEiK16N0Q0d0ZFHhAV2nPjsk2 + 3JhG4n9vxATBkO82f7RLrcrhkx9cbLfN3wIDAQAB + -----END RSA PUBLIC KEY----- + ''; + }; + }; + }; + nomic = { + cores = 2; + dc = "tv"; #dc = "gg23"; + nets = rec { + retiolum = { + addrs4 = ["10.243.0.110"]; + addrs6 = ["42:02d5:733f:d6da:c0f5:2bb7:2b18:09ec"]; + aliases = [ + "nomic.retiolum" + "cgit.nomic.retiolum" + ]; + tinc.pubkey = '' + -----BEGIN RSA PUBLIC KEY----- + MIIBCgKCAQEAwb8Yk/YRc17g2J9n960p6j4W/l559OPyuMPdGJ4DmCm3WNQtxoa+ + qTFUiDiI85BcmfqnSeddLG8zTC2XnSlIvCRMJ9oKzppFM4PX4OTAaJZVE5WyCQhw + Kd4tHVdoQgJW5yFepmT9IUmHqkxXJ0R2W93l2eSZNOcnFvFn0ooiAlRi4zAiHClu + 5Mz80Sc2rvez+n9wtC2D06aYjP23pHYld2xighHR9SUqX1dFzgSXNSoWWCcgNp2a + OKcM8LzxLV7MTMZFOJCJndZ77e4LsUvxhQFP6nyKZWg30PC0zufZsuN5o2xsWSlA + Wi9sMB1AUR6mZrxgcgTFpUjbjbLQf+36CwIDAQAB + -----END RSA PUBLIC KEY----- + ''; + }; + }; + secure = true; + }; + rmdir = { + cores = 1; + dc = "tv"; #dc = "cac"; + nets = rec { + internet = { + addrs4 = ["167.88.44.94"]; + aliases = [ + "rmdir.internet" + ]; + }; + retiolum = { + via = internet; + addrs4 = ["10.243.113.224"]; + addrs6 = ["42:4522:25f8:36bb:8ccb:0150:231a:2af5"]; + aliases = [ + "rmdir.retiolum" + "cgit.rmdir.retiolum" + ]; + tinc.pubkey = '' + -----BEGIN RSA PUBLIC KEY----- + MIIBCgKCAQEA+twy4obSbJdmZLfBoe9YYeyoDnXkO/WPa2D6Eh6jXrWk5fbhBjRf + i3EAQfLiXXFJX3E8V8YvJyazXklI19jJtCLDiu/F5kgJJfyAkWHH+a/hcg7qllDM + Xx2CvS/nCbs+p48/VLO6zLC7b1oHu3K/ob5M5bwPK6j9NEDIL5qYiM5PQzV6zryz + hS9E/+l8Z+UUpYcfS3bRovXJAerB4txc/gD3Xmptq1zk53yn1kJFYfVlwyyz+NEF + 59JZj2PDrvWoG0kx/QjiNurs6XfdnyHe/gP3rmSTrihKFVuA3cZM62sDR4FcaeWH + SnKSp02pqjBOjC/dOK97nXpKLJgNH046owIDAQAB + -----END RSA PUBLIC KEY----- + ''; + }; + }; + }; + wu = { + cores = 4; + # TODO wu is mobile, so dc means "home data center" + dc = "tv"; #dc = "gg23"; + nets = { + retiolum = { + addrs4 = ["10.243.13.37"]; + addrs6 = ["42:0:0:0:0:0:0:1337"]; + aliases = [ + "wu.retiolum" + ]; + tinc.pubkey = '' + -----BEGIN RSA PUBLIC KEY----- + MIIBCgKCAQEArDvU0cuBsVqTjCX2TlWL4XHSy4qSjUhjrDvUPZSKTVN7x6OENCUn + M27g9H7j4/Jw/8IHoJLiKnXHavOoc9UJM+P9Fla/4TTVADr69UDSnLgH+wGiHcEg + GxPkb2jt0Z8zcpD6Fusj1ATs3sssaLHTHvg1D0LylEWA3cI4WPP13v23PkyUENQT + KpSWfR+obqDl38Q7LuFi6dH9ruyvqK+4syddrBwjPXrcNxcGL9QbDn7+foRNiWw4 + 4CE5z25oGG2iWMShI7fe3ji/fMUAl7DSOOrHVVG9eMtpzy+uI8veOHrdTax4oKik + AFGCrMIov3F0GIeu3nDlrTIZPZDTodbFKQIDAQAB + -----END RSA PUBLIC KEY----- + ''; + }; + }; + secure = true; + }; + }; + users = addNames { + mv = { + mail = "mv@cd.retiolum"; + pubkey = readFile ../../Zpubkeys/mv_vod.ssh.pub; + }; + tv = { + mail = "tv@wu.retiolum"; + pubkey = readFile ../../Zpubkeys/tv_wu.ssh.pub; + }; + }; + }; + +in +out diff --git a/krebs/3modules/git.nix b/krebs/3modules/git.nix new file mode 100644 index 000000000..64b7820b2 --- /dev/null +++ b/krebs/3modules/git.nix @@ -0,0 +1,486 @@ +{ config, pkgs, lib, ... }: + +# TODO unify logging of shell scripts to user and journal +# TODO move all scripts to ${etcDir}, so ControlMaster connections +# immediately pick up new authenticators +# TODO when authorized_keys changes, then restart ssh +# (or kill already connected users somehow) + +with import ../4lib { inherit lib; }; +let + cfg = config.krebs.git; + + out = { + options.krebs.git = api; + config = mkIf cfg.enable (mkMerge [ + (mkIf cfg.cgit cgit-imp) + git-imp + ]); + }; + + api = { + enable = mkEnableOption "krebs.git"; + + cgit = mkOption { + type = types.bool; + default = true; + description = '' + Enable cgit. + Cgit is an attempt to create a fast web interface for the git version + control system, using a built in cache to decrease pressure on the + git server. + cgit in this module is being served via fastcgi nginx.This module + deploys a http://cgit.<hostname> nginx configuration and enables nginx + if not yet enabled. + ''; + }; + dataDir = mkOption { + type = types.str; + default = "/var/lib/git"; + description = "Directory used to store repositories."; + }; + etcDir = mkOption { + type = types.str; + default = "/etc/git"; + }; + repos = mkOption { + type = types.attrsOf (types.submodule ({ + options = { + desc = mkOption { + type = types.nullOr types.str; + default = null; + description = '' + Repository description. + ''; + }; + section = mkOption { + type = types.nullOr types.str; + default = null; + description = '' + Repository section. + ''; + }; + name = mkOption { + type = types.str; + description = '' + Repository name. + ''; + }; + hooks = mkOption { + type = types.attrsOf types.str; + default = {}; + description = '' + Repository-specific hooks. + ''; + }; + public = mkOption { + type = types.bool; + default = false; + description = '' + Allow everybody to read the repository via HTTP if cgit enabled. + ''; + # TODO allow every configured user to fetch the repository via SSH. + }; + }; + })); + + default = {}; + + example = literalExample '' + { + testing = { + name = "testing"; + hooks.post-update = ''' + #! /bin/sh + set -euf + echo post-update hook: $* >&2 + '''; + }; + testing2 = { name = "testing2"; }; + } + ''; + + description = '' + Repositories. + ''; + }; + root-desc = mkOption { + type = types.nullOr types.str; + default = null; + description = '' + Text printed below the heading on the repository index page. + Default value: "a fast webinterface for the git dscm". + ''; + }; + root-title = mkOption { + type = types.nullOr types.str; + default = null; + description = '' + Text printed as heading on the repository index page. + Default value: "Git Repository Browser". + ''; + }; + rules = mkOption { + type = types.unspecified; + }; + }; + + git-imp = { + system.activationScripts.git-init = "${init-script}"; + + # TODO maybe put all scripts here and then use PATH? + environment.etc."${etc-base}".source = + scriptFarm "git-ssh-authorizers" { + authorize-command = makeAuthorizeScript (map ({ repo, user, perm }: [ + (map getName (ensureList user)) + (map getName (ensureList repo)) + (map getName perm.allow-commands) + ]) cfg.rules); + + authorize-push = makeAuthorizeScript (map ({ repo, user, perm }: [ + (map getName (ensureList user)) + (map getName (ensureList repo)) + (ensureList perm.allow-receive-ref) + (map getName perm.allow-receive-modes) + ]) (filter (x: hasAttr "allow-receive-ref" x.perm) cfg.rules)); + }; + + users.extraUsers = singleton { + description = "Git repository hosting user"; + name = "git"; + shell = "/bin/sh"; + openssh.authorizedKeys.keys = + mapAttrsToList (_: makeAuthorizedKey git-ssh-command) + config.krebs.users; + uid = 129318403; # genid git + }; + }; + + cgit-imp = { + users.extraUsers = lib.singleton { + inherit (fcgitwrap-user) group name uid; + home = toString (pkgs.runCommand "empty" {} "mkdir -p $out"); + }; + + users.extraGroups = lib.singleton { + inherit (fcgitwrap-group) gid name; + }; + + services.fcgiwrap = { + enable = true; + user = fcgitwrap-user.name; + group = fcgitwrap-user.group; + # socketAddress = "/run/fcgiwrap.sock" (default) + # socketType = "unix" (default) + }; + + environment.etc."cgitrc".text = '' + css=/static/cgit.css + logo=/static/cgit.png + + # if you do not want that webcrawler (like google) index your site + robots=noindex, nofollow + + virtual-root=/ + + # TODO make this nicer (and/or somewhere else) + cache-root=/tmp/cgit + + cache-size=1000 + enable-commit-graph=1 + enable-index-links=1 + enable-index-owner=0 + enable-log-filecount=1 + enable-log-linecount=1 + enable-remote-branches=1 + + ${optionalString (cfg.root-title != null) "root-title=${cfg.root-title}"} + ${optionalString (cfg.root-desc != null) "root-desc=${cfg.root-desc}"} + + snapshots=0 + max-stats=year + + ${concatMapStringsSep "\n" (repo: '' + repo.url=${repo.name} + repo.path=${cfg.dataDir}/${repo.name} + ${optionalString (repo.section != null) "repo.section=${repo.section}"} + ${optionalString (repo.desc != null) "repo.desc=${repo.desc}"} + '') (filter isPublicRepo (attrValues cfg.repos))} + ''; + + system.activationScripts.cgit = '' + mkdir -m 0700 -p /tmp/cgit + chown ${toString fcgitwrap-user.uid}:${toString fcgitwrap-group.gid} /tmp/cgit + ''; + + krebs.nginx = { + enable = true; + servers.cgit = { + server-names = [ + "cgit.${config.networking.hostName}" + "cgit.${config.networking.hostName}.retiolum" + ]; + locations = [ + (nameValuePair "/" '' + include ${pkgs.nginx}/conf/fastcgi_params; + fastcgi_param SCRIPT_FILENAME ${pkgs.cgit}/cgit/cgit.cgi; + fastcgi_param PATH_INFO $uri; + fastcgi_param QUERY_STRING $args; + fastcgi_param HTTP_HOST $server_name; + fastcgi_pass unix:${config.services.fcgiwrap.socketAddress}; + '') + (nameValuePair "/static/" '' + root ${pkgs.cgit}/cgit; + rewrite ^/static(/.*)$ $1 break; + '') + ]; + }; + }; + }; + + fcgitwrap-user = { + name = "fcgiwrap"; + uid = 2867890860; # genid fcgiwrap + group = "fcgiwrap"; + }; + + fcgitwrap-group = { + name = fcgitwrap-user.name; + gid = fcgitwrap-user.uid; + }; + + + ensureList = x: + if typeOf x == "list" then x else [x]; + + getName = x: x.name; + + isPublicRepo = getAttr "public"; # TODO this is also in ./cgit.nix + + makeAuthorizedKey = git-ssh-command: user@{ name, pubkey, ... }: + # TODO assert name + # TODO assert pubkey + let + options = concatStringsSep "," [ + ''command="exec ${git-ssh-command} ${name}"'' + "no-agent-forwarding" + "no-port-forwarding" + "no-pty" + "no-X11-forwarding" + ]; + in + "${options} ${pubkey}"; + + # [case-pattern] -> shell-script + # Create a shell script that succeeds (exit 0) when all its arguments + # match the case patterns (in the given order). + makeAuthorizeScript = + let + # TODO escape + to-pattern = x: concatStringsSep "|" (ensureList x); + go = i: ps: + if ps == [] + then "exit 0" + else '' + case ''$${toString i} in ${to-pattern (head ps)}) + ${go (i + 1) (tail ps)} + esac''; + in + patterns: '' + #! /bin/sh + set -euf + ${concatStringsSep "\n" (map (go 1) patterns)} + exit -1 + ''; + + reponames = rules: sort lessThan (unique (map (x: x.repo.name) rules)); + + # TODO makeGitHooks that uses runCommand instead of scriptFarm? + scriptFarm = + farm-name: scripts: + let + makeScript = script-name: script-string: { + name = script-name; + path = pkgs.writeScript "${farm-name}_${script-name}" script-string; + }; + in + pkgs.linkFarm farm-name (mapAttrsToList makeScript scripts); + + + git-ssh-command = pkgs.writeScript "git-ssh-command" '' + #! /bin/sh + set -euf + + PATH=${makeSearchPath "bin" (with pkgs; [ + coreutils + git + gnugrep + gnused + systemd + ])} + + abort() { + echo "error: $1" >&2 + systemd-cat -p err -t git echo "error: $1" + exit -1 + } + + GIT_SSH_USER=$1 + + systemd-cat -p info -t git echo \ + "authorizing $GIT_SSH_USER $SSH_CONNECTION $SSH_ORIGINAL_COMMAND" + + # References: The Base Definitions volume of + # POSIX.1‐2013, Section 3.278, Portable Filename Character Set + portable_filename_bre="^[A-Za-z0-9._-]\\+$" + + command=$(echo "$SSH_ORIGINAL_COMMAND" \ + | sed -n 's/^\([^ ]*\) '"'"'\(.*\)'"'"'/\1/p' \ + | grep "$portable_filename_bre" \ + || abort 'cannot read command') + + GIT_SSH_REPO=$(echo "$SSH_ORIGINAL_COMMAND" \ + | sed -n 's/^\([^ ]*\) '"'"'\(.*\)'"'"'/\2/p' \ + | grep "$portable_filename_bre" \ + || abort 'cannot read reponame') + + ${cfg.etcDir}/authorize-command \ + "$GIT_SSH_USER" "$GIT_SSH_REPO" "$command" \ + || abort 'access denied' + + repodir=${escapeShellArg cfg.dataDir}/$GIT_SSH_REPO + + systemd-cat -p info -t git \ + echo "authorized exec $command $repodir" + + export GIT_SSH_USER + export GIT_SSH_REPO + exec "$command" "$repodir" + ''; + + init-script = pkgs.writeScript "git-init" '' + #! /bin/sh + set -euf + + PATH=${makeSearchPath "bin" (with pkgs; [ + coreutils + findutils + gawk + git + gnugrep + gnused + ])} + + dataDir=${escapeShellArg cfg.dataDir} + mkdir -p "$dataDir" + + # Notice how the presence of hooks symlinks determine whether + # we manage a repositry or not. + + # Make sure that no existing repository has hooks. We can delete + # symlinks because we assume we created them. + find "$dataDir" -mindepth 2 -maxdepth 2 -name hooks -type l -delete + bad_hooks=$(find "$dataDir" -mindepth 2 -maxdepth 2 -name hooks) + if echo "$bad_hooks" | grep -q .; then + printf 'error: unknown hooks:\n%s\n' \ + "$(echo "$bad_hooks" | sed 's/^/ /')" \ + >&2 + exit -1 + fi + + # Initialize repositories. + ${concatMapStringsSep "\n" (repo: + let + hooks = scriptFarm "git-hooks" (makeHooks repo); + in + '' + reponame=${escapeShellArg repo.name} + repodir=$dataDir/$reponame + mode=${toString (if isPublicRepo repo then 0711 else 0700)} + if ! test -d "$repodir"; then + mkdir -m "$mode" "$repodir" + git init --bare --template=/var/empty "$repodir" + chown -R git:nogroup "$repodir" + fi + ln -s ${hooks} "$repodir/hooks" + '' + ) (attrValues cfg.repos)} + + # Warn about repositories that exist but aren't mentioned in the + # current configuration (and thus didn't receive a hooks symlink). + unknown_repos=$(find "$dataDir" -mindepth 1 -maxdepth 1 \ + -type d \! -exec test -e '{}/hooks' \; -print) + if echo "$unknown_repos" | grep -q .; then + printf 'warning: stale repositories:\n%s\n' \ + "$(echo "$unknown_repos" | sed 's/^/ /')" \ + >&2 + fi + ''; + + makeHooks = repo: removeAttrs repo.hooks [ "pre-receive" ] // { + pre-receive = '' + #! /bin/sh + set -euf + + PATH=${makeSearchPath "bin" (with pkgs; [ + coreutils # env + git + systemd + ])} + + accept() { + #systemd-cat -p info -t git echo "authorized $1" + accept_string="''${accept_string+$accept_string + }authorized $1" + } + reject() { + #systemd-cat -p err -t git echo "denied $1" + #echo 'access denied' >&2 + #exit_code=-1 + reject_string="''${reject_string+$reject_string + }access denied: $1" + } + + empty=0000000000000000000000000000000000000000 + + accept_string= + reject_string= + while read oldrev newrev ref; do + + if [ $oldrev = $empty ]; then + receive_mode=create + elif [ $newrev = $empty ]; then + receive_mode=delete + elif [ "$(git merge-base $oldrev $newrev)" = $oldrev ]; then + receive_mode=fast-forward + else + receive_mode=non-fast-forward + fi + + if ${cfg.etcDir}/authorize-push \ + "$GIT_SSH_USER" "$GIT_SSH_REPO" "$ref" "$receive_mode"; then + accept "$receive_mode $ref" + else + reject "$receive_mode $ref" + fi + done + + if [ -n "$reject_string" ]; then + systemd-cat -p err -t git echo "$reject_string" + exit -1 + fi + + systemd-cat -p info -t git echo "$accept_string" + + ${optionalString (hasAttr "post-receive" repo.hooks) '' + # custom post-receive hook + ${repo.hooks.post-receive}''} + ''; + }; + + etc-base = + assert (hasPrefix "/etc/" cfg.etcDir); + removePrefix "/etc/" cfg.etcDir; + +in +out diff --git a/krebs/3modules/github-hosts-sync.nix b/krebs/3modules/github-hosts-sync.nix new file mode 100644 index 000000000..0274b9d15 --- /dev/null +++ b/krebs/3modules/github-hosts-sync.nix @@ -0,0 +1,83 @@ +{ config, lib, pkgs, ... }: + +with builtins; +with lib; +let + cfg = config.krebs.github-hosts-sync; + + out = { + options.krebs.github-hosts-sync = api; + config = mkIf cfg.enable imp; + }; + + api = { + enable = mkEnableOption "krebs.github-hosts-sync"; + port = mkOption { + type = types.int; # TODO port type + default = 1028; + }; + dataDir = mkOption { + type = types.str; # TODO path (but not just into store) + default = "/var/lib/github-hosts-sync"; + }; + ssh-identity-file = mkOption { + type = types.str; # TODO must be named *.ssh.{id_rsa,id_ed25519} + default = "/root/src/secrets/github-hosts-sync.ssh.id_rsa"; + }; + }; + + imp = { + systemd.services.github-hosts-sync = { + after = [ "network.target" ]; + wantedBy = [ "multi-user.target" ]; + environment = { + port = toString cfg.port; + }; + serviceConfig = { + PermissionsStartOnly = "true"; + SyslogIdentifier = "github-hosts-sync"; + User = user.name; + Restart = "always"; + ExecStartPre = pkgs.writeScript "github-hosts-sync-init" '' + #! /bin/sh + set -euf + + ssh_identity_file_target=$( + case ${cfg.ssh-identity-file} in + *.ssh.id_rsa|*.ssh.id_ed25519) echo ${cfg.dataDir}/.ssh/id_rsa;; + *.ssh.id_ed25519) echo ${cfg.dataDir}/.ssh/id_ed25519;; + *) + echo "bad identity file name: ${cfg.ssh-identity-file}" >&2 + exit 1 + esac + ) + + mkdir -p ${cfg.dataDir} + chown ${user.name}: ${cfg.dataDir} + + install \ + -o ${user.name} \ + -m 0400 \ + ${cfg.ssh-identity-file} \ + "$ssh_identity_file_target" + + ln -snf ${kpkgs.github-known_hosts} ${cfg.dataDir}/.ssh/known_hosts + ''; + ExecStart = "${kpkgs.github-hosts-sync}/bin/github-hosts-sync"; + }; + }; + + users.extraUsers = singleton { + inherit (user) name uid; + home = cfg.dataDir; + }; + }; + + user = { + name = "github-hosts-sync"; + uid = 3220554646; # genid github-hosts-sync + }; + + kpkgs = import ../../krebs/5pkgs { inherit pkgs; }; +in +out diff --git a/krebs/3modules/nginx.nix b/krebs/3modules/nginx.nix new file mode 100644 index 000000000..702e8a7f6 --- /dev/null +++ b/krebs/3modules/nginx.nix @@ -0,0 +1,72 @@ +{ config, pkgs, lib, ... }: + +with builtins; +with lib; +let + cfg = config.krebs.nginx; + + out = { + options.krebs.nginx = api; + config = mkIf cfg.enable imp; + }; + + api = { + enable = mkEnableOption "krebs.nginx"; + + servers = mkOption { + type = with types; attrsOf optionSet; + options = singleton { + server-names = mkOption { + type = with types; listOf str; + # TODO use identity + default = [ + "${config.networking.hostName}" + "${config.networking.hostName}.retiolum" + ]; + }; + locations = mkOption { + type = with types; listOf (attrsOf str); + }; + }; + default = {}; + }; + }; + + imp = { + services.nginx = { + enable = true; + httpConfig = '' + include ${pkgs.nginx}/conf/mime.types; + default_type application/octet-stream; + sendfile on; + keepalive_timeout 65; + gzip on; + server { + listen 80 default_server; + server_name _; + return 404; + } + ${concatStrings (mapAttrsToList (_: to-server) cfg.servers)} + ''; + }; + }; + + + indent = replaceChars ["\n"] ["\n "]; + + to-location = { name, value }: '' + location ${name} { + |