3: {tv -> krebs}.git

1 files changed, 0 insertions, 484 deletions

diff --git a/3modules/tv/git.nix b/3modules/tv/git.nix
deleted file mode 100644
index ea014e2a7..000000000
--- a/3modules/tv/git.nix
+++ /dev/null
@@ -1,484 +0,0 @@
-{ 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 builtins;
-with lib;
-let
-  cfg = config.tv.git;
-
-  out = {
-    # TODO don't import krebs.nginx here
-    imports = [
-      ../../3modules/krebs/nginx.nix
-    ];
-    options.tv.git = api;
-    config = mkIf cfg.enable (mkMerge [
-      (mkIf cfg.cgit cgit-imp)
-      git-imp
-    ]);
-  };
-
-  api = {
-    enable = mkEnableOption "tv.git";
-
-    cgit = mkOption {
-      type = types.bool;
-      default = true;
-      description = "Enable cgit."; # TODO better desc; talk about nginx
-    };
-    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;
-            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: $* >&2
-            ''';
-          };
-          testing2 = { name = "testing2"; };
-        }
-      '';
-
-      description = ''
-        Repositories.
-      '';
-    };
-    root-desc = mkOption {
-      type = types.nullOr types.str;
-      default = null;
-      description = ''
-        Text printed below the heading on the repository index page.
-        Default value: "a fast webinterface for the git dscm".
-      '';
-    };
-    root-title = mkOption {
-      type = types.nullOr types.str;
-      default = null;
-      description = ''
-        Text printed as heading on the repository index page.
-        Default value: "Git Repository Browser".
-      '';
-    };
-    rules = mkOption {
-      type = types.unspecified;
-    };
-    users = mkOption {
-      type = types.unspecified;
-    };
-  };
-
-  git-imp = {
-    system.activationScripts.git-init = "${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) cfg.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