experiment with gitolite

1 files changed, 211 insertions, 1 deletions

diff --git a/modules/uriel/default.nix b/modules/uriel/default.nix
index bfdc022..9cab891 100644
--- a/modules/uriel/default.nix
+++ b/modules/uriel/default.nix
@@ -19,7 +19,216 @@
   ];
   nixpkgs = {
     url = "https://github.com/Lassulus/nixpkgs";
-    rev = "b42ecfb8c61e514bf7733b4ab0982d3e7e27dacb";
+    rev = "b3531eebf625e388d2fa33d56646180236263e74";
+  };
+
+  services.gitolite = {
+    keys = {
+      uriel = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIM1v/N0G7k48thX1vIALTdqrdYUvYM+SvHRq/rCcKLC2 lass@mors";
+      lass = config.sshKeys.lass.pub;
+    };
+    config = ''
+      repo emse-hsdb
+          RW+     =   lass
+          R       =   tv
+          option hook.post-receive = irc-announce
+
+      repo pong
+          RW+     =   lass
+          R       =   tv
+          option hook.post-receive = irc-announce
+
+      repo load-env
+          RW+     =   lass
+          RW+     =   uriel
+          R       =   tv
+          option hook.post-receive = irc-announce
+
+      repo pass
+          RW+     =   lass
+          RW+     =   uriel
+
+      repo testing
+          RW+     =   @all
+
+      repo painload
+          RW+     =   lass
+          R       =   tv
+          R       =   makefu
+
+      repo brain
+          RW+     =   lass
+          R       =   tv
+          R       =   makefu
+          option hook.post-receive = irc-announce
+
+      repo services
+          RW+     =   lass
+          R       =   tv
+          R       =   makefu
+          option hook.post-receive = irc-announce
+
+      repo emse-drywall
+          RW+     =   lass
+          R       =   tv
+          R       =   uriel
+          option hook.post-receive = irc-announce
+
+      repo emse-db
+          RW+     =   lass
+          R       =   tv
+          option hook.post-receive = irc-announce
+
+      repo config
+          RW+     =   lass
+          RW+     =   uriel
+          R       =   fastpoke
+    '';
+
+    rc = ''
+      %RC = (
+          UMASK                           =>  0077,
+          GIT_CONFIG_KEYS                 =>  "",
+          LOG_EXTRA                       =>  1,
+          ROLES => {
+              READERS                     =>  1,
+              WRITERS                     =>  1,
+          },
+          LOCAL_CODE                =>  "$ENV{HOME}/.gitolite",
+          ENABLE => [
+                  'help',
+                  'desc',
+                  'info',
+                  'perms',
+                  'writable',
+                  'ssh-authkeys',
+                  'git-config',
+                  'daemon',
+                  'gitweb',
+                  'repo-specific-hooks',
+          ],
+      );
+      1;
+    '';
+
+    hooks.repoSpecific = {
+      irc-announce = ''
+        #! /bin/sh
+        set -euf
+
+        config_file="$GL_ADMIN_BASE/conf/irc-announce.conf"
+        if test -f "$config_file"; then
+          . "$config_file"
+        fi
+
+        # XXX when changing IRC_CHANNEL or IRC_SERVER/_PORT, don't forget to update
+        #     any relevant gitolite LOCAL_CODE!
+        # CAVEAT we hope that IRC_NICK is unique
+        IRC_NICK="''${IRC_NICK-gl$GL_TID}"
+        IRC_CHANNEL="''${IRC_CHANNEL-#retiolum}"
+        IRC_SERVER="''${IRC_SERVER-ire.retiolum}"
+        IRC_PORT="''${IRC_PORT-6667}"
+
+        # for privmsg_cat below
+        export IRC_CHANNEL
+
+        # collect users that are mentioned in the gitolite configuration
+        interested_users="$(perl -e '
+          do "gl-conf";
+          print join(" ", keys%{ $one_repo{$ENV{"GL_REPO"}} });
+        ')"
+
+        # CAVEAT beware of real TABs in grep pattern!
+        # CAVEAT there will never be more than 42 relevant log entries!
+        log="$(tail -n 42 "$GL_LOGFILE" | grep "^[^ ]*  $GL_TID ")"
+        update_log="$(echo "$log" | grep "^[^ ]*  $GL_TID update")"
+
+        # (debug output)
+        env | sed 's/^/env: /'
+        echo "$log" | sed 's/^/log: /'
+
+        # see http://gitolite.com/gitolite/dev-notes.html#lff
+        reponame=$(echo "$update_log" | cut -f 4)
+        username=$(echo "$update_log" | cut -f 5)
+        ref_name=$(echo "$update_log" | cut -f 7 | sed 's|^refs/heads/||')
+        old_sha=$(echo "$update_log" | cut -f 8)
+        new_sha=$(echo "$update_log" | cut -f 9)
+
+        # check if new branch is created
+        if test $old_sha = 0000000000000000000000000000000000000000; then
+          # TODO what should we really show?
+          old_sha=$new_sha^
+        fi
+
+        #
+        git_log="$(git log $old_sha..$new_sha --pretty=oneline --abbrev-commit)"
+        commit_count=$(echo "$git_log" | wc -l)
+
+        # echo2 and cat2 are used output to both, stdout and stderr
+        # This is used to see what we send to the irc server. (debug output)
+        echo2() { echo "$*"; echo "$*" >&2; }
+        cat2() { tee /dev/stderr; }
+
+        # privmsg_cat transforms stdin to a privmsg
+        privmsg_cat() { awk '{ print "PRIVMSG "ENVIRON["IRC_CHANNEL"]" :"$0 }'; }
+
+        # ircin is used to feed the output of netcat back to the "irc client"
+        # so we can implement expect-like behavior with sed^_^
+        # XXX mkselfdestructingtmpfifo would be nice instead of this cruft
+        tmpdir="$(mktemp -d irc-announce_XXXXXXXX)"
+        cd "$tmpdir"
+        mkfifo ircin
+        trap "
+          rm ircin
+          cd '$OLDPWD'
+          rmdir '$tmpdir'
+          trap - EXIT INT QUIT
+        " EXIT INT QUIT
+
+        #
+        #
+        #
+        {
+          echo2 "USER $LOGNAME 0 * :$LOGNAME@$(hostname)"
+          echo2 "NICK $IRC_NICK"
+
+          # wait for MODE message
+          sed -n '/^:[^ ]* MODE /q'
+
+          echo2 "JOIN $IRC_CHANNEL"
+
+          echo "$interested_users" \
+            | tr ' ' '\n' \
+            | grep -v "^$GL_USER" \
+            | sed 's/$/: poke/' \
+            | privmsg_cat \
+            | cat2
+
+          printf '[13%s] %s pushed %s new commit%s to 6%s %s\n' \
+              "$reponame" \
+              "$username" \
+              "$commit_count" \
+              "$(test $commit_count = 1 || echo s)" \
+              "$(hostname)" \
+              "$ref_name" \
+            | privmsg_cat \
+            | cat2
+
+          echo "$git_log" \
+            | sed 's/^/14/;s/ / /' \
+            | privmsg_cat \
+            | cat2
+
+          echo2 "PART $IRC_CHANNEL"
+
+          # wait for PART confirmation
+          sed -n '/:'"$IRC_NICK"'![^ ]* PART /q'
+
+          echo2 'QUIT :Gone to have lunch'
+        } < ircin \
+          | nc "$IRC_SERVER" "$IRC_PORT" | tee -a ircin
+      '';
+    };
   };
 
 
@@ -104,6 +313,7 @@
   environment.systemPackages = with pkgs; [
   ];
 
+
   #users.extraGroups = {
   #  loot = {
   #    members = [