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-rw-r--r--tv/4lib/default.nix27
-rw-r--r--tv/4lib/git.nix182
-rw-r--r--tv/4lib/modules.nix21
3 files changed, 230 insertions, 0 deletions
diff --git a/tv/4lib/default.nix b/tv/4lib/default.nix
new file mode 100644
index 000000000..352689af4
--- /dev/null
+++ b/tv/4lib/default.nix
@@ -0,0 +1,27 @@
+{ lib, pkgs, ... }:
+
+let
+ krebs = import ../../krebs/4lib { inherit lib; };
+in
+
+with krebs;
+
+krebs // rec {
+
+ git = import ./git.nix {
+ lib = krebs;
+ inherit pkgs;
+ };
+
+ # "7.4.335" -> "74"
+ majmin = with lib; x : concatStrings (take 2 (splitString "." x));
+
+ shell-escape =
+ let
+ isSafeChar = c: match "[-./0-9_a-zA-Z]" c != null;
+ in
+ stringAsChars (c:
+ if isSafeChar c then c
+ else if c == "\n" then "'\n'"
+ else "\\${c}");
+}
diff --git a/tv/4lib/git.nix b/tv/4lib/git.nix
new file mode 100644
index 000000000..2b25debdc
--- /dev/null
+++ b/tv/4lib/git.nix
@@ -0,0 +1,182 @@
+{ lib, pkgs, ... }:
+
+let
+ inherit (lib) addNames escapeShellArg makeSearchPath;
+
+ commands = addNames {
+ git-receive-pack = {};
+ git-upload-pack = {};
+ };
+
+ receive-modes = addNames {
+ fast-forward = {};
+ non-fast-forward = {};
+ create = {};
+ delete = {};
+ merge = {}; # TODO implement in git.nix
+ };
+
+ permissions = {
+ fetch = {
+ allow-commands = [
+ commands.git-upload-pack
+ ];
+ };
+
+ push = ref: extra-modes: {
+ allow-commands = [
+ commands.git-receive-pack
+ commands.git-upload-pack
+ ];
+ allow-receive-ref = ref;
+ allow-receive-modes = [ receive-modes.fast-forward ] ++ extra-modes;
+ };
+ };
+
+ refs = {
+ master = "refs/heads/master";
+ all-heads = "refs/heads/*";
+ };
+
+ irc-announce-script = pkgs.writeScript "irc-announce-script" ''
+ #! /bin/sh
+ set -euf
+
+ export PATH=${makeSearchPath "bin" (with pkgs; [
+ coreutils
+ gawk
+ gnused
+ netcat
+ nettools
+ ])}
+
+ IRC_SERVER=$1
+ IRC_PORT=$2
+ IRC_NICK=$3$$
+ IRC_CHANNEL=$4
+ message=$5
+
+ export IRC_CHANNEL # for privmsg_cat
+
+ # echo2 and cat2 are used output to both, stdout and stderr
+ # This is used to see what we send to the irc server. (debug output)
+ echo2() { echo "$*"; 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 $IRC_CHANNEL"
+
+ printf '%s' "$message" \
+ | 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
+ '';
+
+ hooks = {
+ # TODO make this a package?
+ irc-announce = { nick, channel, server, port ? 6667 }: ''
+ #! /bin/sh
+ set -euf
+
+ export PATH=${makeSearchPath "bin" (with pkgs; [
+ coreutils
+ git
+ gnused
+ ])}
+
+ nick=${escapeShellArg nick}
+ channel=${escapeShellArg channel}
+ server=${escapeShellArg server}
+ port=${toString port}
+
+ host=$nick
+ cgit_endpoint=http://cgit.$host
+
+ empty=0000000000000000000000000000000000000000
+
+ unset message
+ 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)" = $oldrev ]; then
+ receive_mode=fast-forward
+ else
+ receive_mode=non-fast-forward
+ fi
+
+ h=$(echo $ref | sed 's:^refs/heads/::')
+
+ # empty_tree=$(git hash-object -t tree /dev/null
+ empty_tree=4b825dc6
+
+ id=$(echo $newrev | cut -b-7)
+ id2=$(echo $oldrev | cut -b-7)
+ if [ $newrev = $empty ]; then id=$empty_tree; fi
+ if [ $oldrev = $empty ]; then id2=$empty_tree; fi
+
+ case $receive_mode in
+ create)
+ #git log --oneline $id2
+ link="$cgit_endpoint/$GIT_SSH_REPO/?h=$h"
+ ;;
+ delete)
+ #git log --oneline $id2
+ link="$cgit_endpoint/$GIT_SSH_REPO/ ($h)"
+ ;;
+ fast-forward|non-fast-forward)
+ #git diff --stat $id..$id2
+ link="$cgit_endpoint/$GIT_SSH_REPO/diff/?h=$h&id=$id&id2=$id2"
+ ;;
+ esac
+
+ #$host $GIT_SSH_REPO $ref $link
+ message="''${message+$message
+ }$GIT_SSH_USER $receive_mode $link"
+ done
+
+ if test -n "''${message-}"; then
+ exec ${irc-announce-script} \
+ "$server" \
+ "$port" \
+ "$nick" \
+ "$channel" \
+ "$message"
+ fi
+ '';
+ };
+
+in
+commands // receive-modes // permissions // refs // hooks
diff --git a/tv/4lib/modules.nix b/tv/4lib/modules.nix
new file mode 100644
index 000000000..248e638ea
--- /dev/null
+++ b/tv/4lib/modules.nix
@@ -0,0 +1,21 @@
+let
+ pkgs = import <nixpkgs> {};
+ inherit (pkgs.lib) concatMap hasAttr;
+in rec {
+
+ no-touch-args = {
+ config = throw "no-touch-args: can't touch config!";
+ lib = throw "no-touch-args: can't touch lib!";
+ pkgs = throw "no-touch-args: can't touch pkgs!";
+ };
+
+ # list-imports : path -> [path]
+ # Return a module's transitive list of imports.
+ # XXX duplicates won't get eliminated from the result.
+ list-imports = path:
+ let module = import path no-touch-args;
+ imports = if hasAttr "imports" module
+ then concatMap list-imports module.imports
+ else [];
+ in [path] ++ imports;
+}