X-Git-Url: http://www.git.stargrave.org/?p=public-inbox.git;a=blobdiff_plain;f=lib%2FPublicInbox%2FLEI.pm;h=9ab91714d0b8b725fdda3b92889b70574dce6b83;hp=52c551cf998b7561d3b4a9cec57aa957a9502b3f;hb=6b52fe53a1f9e69a6ecfce16216a1fa180e4645f;hpb=a1539672716f91acc67397a1a7d16e99df068931

diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index 52c551cf..9ab91714 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -1,4 +1,4 @@
-# Copyright (C) 2020-2021 all contributors <meta@public-inbox.org>
+# Copyright (C) all contributors <meta@public-inbox.org>
 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
 
 # Backend for `lei' (local email interface).  Unlike the C10K-oriented
@@ -12,21 +12,23 @@ use parent qw(PublicInbox::DS PublicInbox::LeiExternal
 	PublicInbox::LeiQuery);
 use Getopt::Long ();
 use Socket qw(AF_UNIX SOCK_SEQPACKET MSG_EOR pack_sockaddr_un);
-use Errno qw(EPIPE EAGAIN EINTR ECONNREFUSED ENOENT ECONNRESET);
+use Errno qw(EPIPE EAGAIN ECONNREFUSED ENOENT ECONNRESET);
 use Cwd qw(getcwd);
 use POSIX qw(strftime);
 use IO::Handle ();
 use Fcntl qw(SEEK_SET);
 use PublicInbox::Config;
-use PublicInbox::Syscall qw(SFD_NONBLOCK EPOLLIN EPOLLET);
-use PublicInbox::Sigfd;
-use PublicInbox::DS qw(now dwaitpid);
+use PublicInbox::Syscall qw(EPOLLIN);
+use PublicInbox::DS qw(dwaitpid);
 use PublicInbox::Spawn qw(spawn popen_rd);
 use PublicInbox::Lock;
 use PublicInbox::Eml;
+use PublicInbox::Import;
+use PublicInbox::ContentHash qw(git_sha);
 use Time::HiRes qw(stat); # ctime comparisons for config cache
 use File::Path qw(mkpath);
 use File::Spec;
+use Sys::Syslog qw(openlog syslog closelog);
 our $quit = \&CORE::exit;
 our ($current_lei, $errors_log, $listener, $oldset, $dir_idle,
 	$recv_cmd, $send_cmd);
@@ -75,25 +77,28 @@ sub rel2abs {
 		return $p;
 	}
 	my $pwd = $self->{env}->{PWD};
-	my $cwd;
 	if (defined $pwd) {
-		my $xcwd = $self->{3} //
-			($cwd = getcwd() // die "getcwd(PWD=$pwd): $!");
 		if (my @st_pwd = stat($pwd)) {
-			my @st_cwd = stat($xcwd) or die "stat($xcwd): $!";
+			my @st_cwd = stat($self->{3}) or die "stat({3}): $!";
 			"@st_pwd[1,0]" eq "@st_cwd[1,0]" or
 				$self->{env}->{PWD} = $pwd = undef;
 		} else { # PWD was invalid
 			$self->{env}->{PWD} = $pwd = undef;
 		}
 	}
-	$pwd //= $self->{env}->{PWD} = $cwd // getcwd() // die "getcwd: $!";
+	$pwd //= $self->{env}->{PWD} = getcwd() // die "getcwd: $!";
 	File::Spec->rel2abs($p, $pwd);
 }
 
 # abs_path resolves symlinks in parent iff all parents exist
 sub abs_path { Cwd::abs_path($_[1]) // rel2abs(@_) }
 
+sub canonpath_harder {
+	my $p = $_[-1]; # $_[0] may be self
+	$p = File::Spec->canonpath($p);
+	$p =~ m!(?:/*|\A)\.\.(?:/*|\z)! && -e $p ? Cwd::abs_path($p) : $p;
+}
+
 sub share_path ($) { # $HOME/.local/share/lei/$FOO
 	my ($self) = @_;
 	rel2abs($self, ($self->{env}->{XDG_DATA_HOME} //
@@ -125,23 +130,24 @@ sub url_folder_cache {
 
 sub ale {
 	my ($self) = @_;
-	$self->{ale} //= do {
+	$self->{ale} // do {
 		require PublicInbox::LeiALE;
-		$self->_lei_cfg(1)->{ale} //= PublicInbox::LeiALE->new($self);
+		my $cfg = $self->_lei_cfg(1);
+		$self->{ale} = $cfg->{ale} //= PublicInbox::LeiALE->new($self);
 	};
 }
 
 sub index_opt {
 	# TODO: drop underscore variants everywhere, they're undocumented
 	qw(fsync|sync! jobs|j=i indexlevel|L=s compact
-	max_size|max-size=s sequential_shard|sequential-shard
+	max_size|max-size=s sequential-shard
 	batch_size|batch-size=s skip-docdata)
 }
 
 my @c_opt = qw(c=s@ C=s@ quiet|q);
-my @lxs_opt = (qw(remote! local! external! include|I=s@ exclude=s@ only=s@
-	import-remote! no-torsocks torsocks=s),
-	PublicInbox::LeiQuery::curl_opt());
+my @net_opt = (qw(no-torsocks torsocks=s), PublicInbox::LeiQuery::curl_opt());
+my @lxs_opt = qw(remote! local! external! include|I=s@ exclude=s@ only|O=s@
+	import-remote!);
 
 # we don't support -C as an alias for --find-copies since it's already
 # used for chdir
@@ -166,74 +172,81 @@ our @diff_opt = qw(unified|U=i output-indicator-new=s output-indicator-old=s
 our %CMD = ( # sorted in order of importance/use:
 'q' => [ '--stdin|SEARCH_TERMS...', 'search for messages matching terms',
 	'stdin|', # /|\z/ must be first for lone dash
-	@lxs_opt,
-	qw(save output|mfolder|o=s format|f=s dedupe|d=s threads|t+
+	@lxs_opt, @net_opt,
+	qw(save! output|mfolder|o=s format|f=s dedupe|d=s threads|t+
 	sort|s=s reverse|r offset=i pretty jobs|j=s globoff|g augment|a
 	import-before! lock=s@ rsyncable alert=s@ mua=s verbose|v+
 	shared color! mail-sync!), @c_opt, opt_dash('limit|n=i', '[0-9]+') ],
 
-'up' => [ 'OUTPUT|--all', 'update saved search',
-	qw(jobs|j=s lock=s@ alert=s@ mua=s verbose|v+ all:s), @c_opt ],
+'up' => [ 'OUTPUT...|--all', 'update saved search',
+	qw(jobs|j=s lock=s@ alert=s@ mua=s verbose|v+ exclude=s@
+	remote-fudge-time=s all:s remote! local! external!), @net_opt, @c_opt ],
 
 'lcat' => [ '--stdin|MSGID_OR_URL...', 'display local copy of message(s)',
 	'stdin|', # /|\z/ must be first for lone dash
 	# some of these options are ridiculous for lcat
-	@lxs_opt, qw(output|mfolder|o=s format|f=s dedupe|d=s threads|t+
+	@lxs_opt, @net_opt,
+	qw(output|mfolder|o=s format|f=s dedupe|d=s threads|t+
 	sort|s=s reverse|r offset=i jobs|j=s globoff|g augment|a
 	import-before! lock=s@ rsyncable alert=s@ mua=s verbose|v+
 	color!), @c_opt, opt_dash('limit|n=i', '[0-9]+') ],
 
 'blob' => [ 'OID', 'show a git blob, reconstructing from mail if necessary',
 	qw(git-dir=s@ cwd! verbose|v+ mail! oid-a|A=s path-a|a=s path-b|b=s),
-	@lxs_opt, @c_opt ],
+	@lxs_opt, @net_opt, @c_opt ],
 
 'rediff' => [ '--stdin|LOCATION...',
 		'regenerate a diff with different options',
 	'stdin|', # /|\z/ must be first for lone dash
-	qw(git-dir=s@ cwd! verbose|v+ color:s no-color),
-	@diff_opt, @lxs_opt, @c_opt ],
+	qw(git-dir=s@ cwd! verbose|v+ color:s no-color drq:1 dequote-only:1),
+	@diff_opt, @lxs_opt, @net_opt, @c_opt ],
+
+'mail-diff' => [ '--stdin|LOCATION...', 'diff the contents of emails',
+	'stdin|', # /|\z/ must be first for lone dash
+	qw(verbose|v+ in-format|F=s color:s no-color raw-header),
+	@diff_opt, @net_opt, @c_opt ],
 
 'add-external' => [ 'LOCATION',
 	'add/set priority of a publicinbox|extindex for extra matches',
-	qw(boost=i mirror=s no-torsocks torsocks=s inbox-version=i
-	verbose|v+), @c_opt, index_opt(),
-	PublicInbox::LeiQuery::curl_opt() ],
+	qw(boost=i mirror=s inbox-version=i epoch=s verbose|v+),
+	@c_opt, index_opt(), @net_opt ],
 'ls-external' => [ '[FILTER]', 'list publicinbox|extindex locations',
 	qw(format|f=s z|0 globoff|g invert-match|v local remote), @c_opt ],
 'ls-label' => [ '', 'list labels', qw(z|0 stats:s), @c_opt ],
 'ls-mail-sync' => [ '[FILTER]', 'list mail sync folders',
 		qw(z|0 globoff|g invert-match|v local remote), @c_opt ],
 'ls-mail-source' => [ 'URL', 'list IMAP or NNTP mail source folders',
-		qw(z|0 ascii l url), @c_opt ],
+		qw(z|0 ascii l pretty url), @net_opt, @c_opt ],
 'forget-external' => [ 'LOCATION...|--prune',
 	'exclude further results from a publicinbox|extindex',
 	qw(prune), @c_opt ],
 
 'ls-search' => [ '[PREFIX]', 'list saved search queries',
 		qw(format|f=s pretty l ascii z|0), @c_opt ],
-'forget-search' => [ 'OUTPUT', 'forget a saved search',
-		qw(verbose|v+), @c_opt ],
+'forget-search' => [ 'OUTPUT...|--prune', 'forget a saved search',
+		qw(verbose|v+ prune:s), @c_opt ],
 'edit-search' => [ 'OUTPUT', "edit saved search via `git config --edit'",
 			@c_opt ],
 'rm' => [ '--stdin|LOCATION...',
 	'remove a message from the index and prevent reindexing',
 	'stdin|', # /|\z/ must be first for lone dash
-	@c_opt ],
+	qw(in-format|F=s lock=s@), @net_opt, @c_opt ],
 'plonk' => [ '--threads|--from=IDENT',
 	'exclude mail matching From: or threads from non-Message-ID searches',
 	qw(stdin| threads|t from|f=s mid=s oid=s), @c_opt ],
 'tag' => [ 'KEYWORDS...',
 	'set/unset keywords and/or labels on message(s)',
 	qw(stdin| in-format|F=s input|i=s@ oid=s@ mid=s@),
-	qw(no-torsocks torsocks=s), PublicInbox::LeiQuery::curl_opt(), @c_opt,
-	pass_through('-kw:foo for delete') ],
+	@net_opt, @c_opt, pass_through('-kw:foo for delete') ],
 
 'purge-mailsource' => [ 'LOCATION|--all',
 	'remove imported messages from IMAP, Maildirs, and MH',
 	qw(exact! all jobs:i indexed), @c_opt ],
 
-'add-watch' => [ 'LOCATION', 'watch for new messages and flag changes',
+'add-watch' => [ 'LOCATION...', 'watch for new messages and flag changes',
 	qw(poll-interval=s state=s recursive|r), @c_opt ],
+'rm-watch' => [ 'LOCATION...', 'remove specified watch(es)',
+	qw(recursive|r), @c_opt ],
 'ls-watch' => [ '[FILTER...]', 'list active watches with numbers and status',
 		qw(l z|0), @c_opt ],
 'pause-watch' => [ '[WATCH_NUMBER_OR_FILTER]', qw(all local remote), @c_opt ],
@@ -243,34 +256,34 @@ our %CMD = ( # sorted in order of importance/use:
 
 'index' => [ 'LOCATION...', 'one-time index from URL or filesystem',
 	qw(in-format|F=s kw! offset=i recursive|r exclude=s include|I=s
-	verbose|v+ incremental!),
-	 PublicInbox::LeiQuery::curl_opt(), # mainly for --proxy=
+	verbose|v+ incremental!), @net_opt, # mainly for --proxy=
 	 @c_opt ],
 'import' => [ 'LOCATION...|--stdin',
 	'one-time import/update from URL or filesystem',
-	qw(stdin| offset=i recursive|r exclude=s include|I=s jobs=s new-only
+	qw(stdin| offset=i recursive|r exclude=s include|I=s new-only
 	lock=s@ in-format|F=s kw! verbose|v+ incremental! mail-sync!),
-	qw(no-torsocks torsocks=s), PublicInbox::LeiQuery::curl_opt(), @c_opt ],
+	@net_opt, @c_opt ],
 'forget-mail-sync' => [ 'LOCATION...',
 	'forget sync information for a mail folder', @c_opt ],
-'prune-mail-sync' => [ 'LOCATION...|--all',
-	'prune dangling sync data for a mail folder', 'all:s', @c_opt ],
+'refresh-mail-sync' => [ 'LOCATION...|--all',
+	'prune dangling sync data for a mail folder', 'all:s',
+		@net_opt, @c_opt ],
 'export-kw' => [ 'LOCATION...|--all',
 	'one-time export of keywords of sync sources',
-	qw(all:s mode=s), @c_opt ],
+	qw(all:s mode=s), @net_opt, @c_opt ],
 'convert' => [ 'LOCATION...|--stdin',
 	'one-time conversion from URL or filesystem to another format',
 	qw(stdin| in-format|F=s out-format|f=s output|mfolder|o=s lock=s@ kw!),
-	qw(no-torsocks torsocks=s), PublicInbox::LeiQuery::curl_opt(), @c_opt ],
-'p2q' => [ 'FILE|COMMIT_OID|--stdin',
+	@net_opt, @c_opt ],
+'p2q' => [ 'LOCATION_OR_COMMIT...|--stdin',
 	"use a patch to generate a query for `lei q --stdin'",
-	qw(stdin| want|w=s@ uri debug), @c_opt ],
+	qw(stdin| in-format|F=s want|w=s@ uri debug), @net_opt, @c_opt ],
 'config' => [ '[...]', sub {
 		'git-config(1) wrapper for '._config_path($_[0]);
 	}, qw(config-file|system|global|file|f=s), # for conflict detection
-	 qw(c=s@ C=s@), pass_through('git config') ],
-'inspect' => [ 'ITEMS...', 'inspect lei/store and/or local external',
-	qw(pretty ascii dir=s), @c_opt ],
+	 qw(edit|e c=s@ C=s@), pass_through('git config') ],
+'inspect' => [ 'ITEMS...|--stdin', 'inspect lei/store and/or local external',
+	qw(stdin| pretty ascii dir|d=s), @c_opt ],
 
 'init' => [ '[DIRNAME]', sub {
 	"initialize storage, default: ".store_path($_[0]);
@@ -323,13 +336,14 @@ my %OPTDESC = (
 'path-a|a=s' => 'pre-image pathname associated with OID',
 'path-b|b=s' => 'post-image pathname associated with OID',
 'git-dir=s@' => 'additional git repository to scan',
-'dir=s	inspect' => 'specify a inboxdir, extindex topdir or Xapian shard',
+'dir|d=s	inspect' =>
+	'specify a inboxdir, extindex topdir or Xapian shard',
 'proxy=s' => [ 'PROTO://HOST[:PORT]', # shared with curl(1)
 	"proxy for (e.g. `socks5h://0:9050')" ],
 'torsocks=s' => ['VAL|auto|no|yes',
 		'whether or not to wrap git and curl commands with torsocks'],
 'no-torsocks' => 'alias for --torsocks=no',
-'save' =>  "save a search for `lei up'",
+'save!' =>  "do not save a search for `lei up'",
 'import-remote!' => 'do not memoize remote messages into local store',
 
 'type=s' => [ 'any|mid|git', 'disambiguate type' ],
@@ -341,6 +355,7 @@ my %OPTDESC = (
 
 'want|w=s@' => [ 'PREFIX|dfpost|dfn', # common ones in help...
 		'search prefixes to extract (default: dfpost7)' ],
+'uri	p2q' => [ 'URI escape output' ],
 
 'alert=s@' => ['CMD,:WINCH,:bell,<any command>',
 	'run command(s) or perform ops when done writing to output ' .
@@ -369,7 +384,7 @@ my %OPTDESC = (
 	'do not index messages larger than SIZE (default: infinity)' ],
 'batch_size|batch-size=s' => [ 'SIZE',
 	'flush changes to OS after given number of bytes (default: 1m)' ],
-'sequential_shard|sequential-shard' =>
+'sequential-shard' =>
 	'index Xapian shards sequentially for slow storage',
 'skip-docdata' =>
 	'drop compatibility w/ public-inbox <1.6 to save ~1.5% space',
@@ -381,7 +396,7 @@ my %OPTDESC = (
 		'exclude specified external(s) from search' ],
 'include|I=s@	q' => [ 'LOCATION',
 		'include specified external(s) in search' ],
-'only=s@	q' => [ 'LOCATION',
+'only|O=s@	q' => [ 'LOCATION',
 		'only use specified external(s) for search' ],
 'jobs=s	q' => [ '[SEARCH_JOBS][,WRITER_JOBS]',
 		'control number of search and writer jobs' ],
@@ -396,6 +411,9 @@ my %OPTDESC = (
 'url	ls-mail-source' => 'show full URL of newsgroup or IMAP folder',
 'format|f=s	ls-external' => $ls_format,
 
+'prune:s	forget-search' =>
+	['TYPE|local|remote', 'prune all, remote or local folders' ],
+
 'limit|n=i@' => ['NUM', 'limit on number of matches (default: 10000)' ],
 'offset=i' => ['OFF', 'search result offset (default: 0)'],
 
@@ -410,7 +428,11 @@ my %OPTDESC = (
 'remote' => 'limit operations to those requiring network access',
 'remote!' => 'prevent operations requiring network access',
 
-'all:s	up' => ['local', 'update all (local) saved searches' ],
+# up, refresh-mail-sync, export-kw
+'all:s' => ['TYPE|local|remote', 'all remote or local folders' ],
+
+'remote-fudge-time=s' => [ 'INTERVAL',
+	'look for mail INTERVAL older than the last successful query' ],
 
 'mid=s' => 'specify the Message-ID of a message',
 'oid=s' => 'specify the git object ID of a message',
@@ -436,16 +458,12 @@ my %CONFIG_KEYS = (
 	'leistore.dir' => 'top-level storage location',
 );
 
-my @WQ_KEYS = qw(lxs l2m ikw pmd wq1 lne); # internal workers
+my @WQ_KEYS = qw(lxs l2m ikw pmd wq1 lne v2w); # internal workers
 
 sub _drop_wq {
 	my ($self) = @_;
 	for my $wq (grep(defined, delete(@$self{@WQ_KEYS}))) {
-		if ($wq->wq_kill) {
-			$wq->wq_close(0, undef, $self);
-		} elsif ($wq->wq_kill_old) {
-			$wq->wq_wait_old(undef, $self);
-		}
+		$wq->wq_kill('-TERM');
 		$wq->DESTROY;
 	}
 }
@@ -453,14 +471,16 @@ sub _drop_wq {
 # pronounced "exit": x_it(1 << 8) => exit(1); x_it(13) => SIGPIPE
 sub x_it ($$) {
 	my ($self, $code) = @_;
+	local $current_lei = $self;
 	# make sure client sees stdout before exit
 	$self->{1}->autoflush(1) if $self->{1};
-	dump_and_clear_log();
 	stop_pager($self);
-	if ($self->{pkt_op_p}) { # to top lei-daemon
+	if ($self->{pkt_op_p}) { # worker => lei-daemon
 		$self->{pkt_op_p}->pkt_do('x_it', $code);
-	} elsif ($self->{sock}) { # to lei(1) client
+	} elsif ($self->{sock}) { # lei->daemon => lei(1) client
 		send($self->{sock}, "x_it $code", MSG_EOR);
+	} elsif ($quit == \&CORE::exit) { # an admin (one-shot) command
+		exit($code >> 8);
 	} # else ignore if client disconnected
 }
 
@@ -477,8 +497,15 @@ sub err ($;@) {
 
 sub qerr ($;@) { $_[0]->{opt}->{quiet} or err(shift, @_) }
 
+sub qfin { # show message on finalization (LeiFinmsg)
+	my ($lei, $msg) = @_;
+	return if $lei->{opt}->{quiet};
+	$lei->{fmsg} ? push(@{$lei->{fmsg}}, "$msg\n") : qerr($lei, $msg);
+}
+
 sub fail_handler ($;$$) {
 	my ($lei, $code, $io) = @_;
+	local $current_lei = $lei;
 	close($io) if $io; # needed to avoid warnings on SIGPIPE
 	_drop_wq($lei);
 	x_it($lei, $code // (1 << 8));
@@ -488,18 +515,12 @@ sub sigpipe_handler { # handles SIGPIPE from @WQ_KEYS workers
 	fail_handler($_[0], 13, delete $_[0]->{1});
 }
 
-# PublicInbox::OnDestroy callback for SIGINT to take out the entire pgid
-sub sigint_reap {
-	my ($pgid) = @_;
-	dwaitpid($pgid) if kill('-INT', $pgid);
-}
-
 sub fail ($$;$) {
-	my ($self, $buf, $exit_code) = @_;
+	my ($self, $msg, $exit_code) = @_;
+	local $current_lei = $self;
 	$self->{failed}++;
-	err($self, $buf) if defined $buf;
-	# calls fail_handler:
-	$self->{pkt_op_p}->pkt_do('!') if $self->{pkt_op_p};
+	warn(substr($msg, -1, 1) eq "\n" ? $msg : "$msg\n") if defined $msg;
+	$self->{pkt_op_p}->pkt_do('fail_handler') if $self->{pkt_op_p};
 	x_it($self, ($exit_code // 1) << 8);
 	undef;
 }
@@ -517,18 +538,22 @@ sub puts ($;@) { out(shift, map { "$_\n" } @_) }
 
 sub child_error { # passes non-fatal curl exit codes to user
 	my ($self, $child_error, $msg) = @_; # child_error is $?
-	$self->err($msg) if $msg;
+	local $current_lei = $self;
+	$child_error ||= 1 << 8;
+	warn(substr($msg, -1, 1) eq "\n" ? $msg : "$msg\n") if defined $msg;
 	if ($self->{pkt_op_p}) { # to top lei-daemon
 		$self->{pkt_op_p}->pkt_do('child_error', $child_error);
 	} elsif ($self->{sock}) { # to lei(1) client
 		send($self->{sock}, "child_error $child_error", MSG_EOR);
+	} else { # non-lei admin command
+		$self->{child_error} ||= $child_error;
 	} # else noop if client disconnected
 }
 
 sub note_sigpipe { # triggers sigpipe_handler
 	my ($self, $fd) = @_;
 	close(delete($self->{$fd})); # explicit close silences Perl warning
-	$self->{pkt_op_p}->pkt_do('|') if $self->{pkt_op_p};
+	$self->{pkt_op_p}->pkt_do('sigpipe_handler') if $self->{pkt_op_p};
 	x_it($self, 13);
 }
 
@@ -536,7 +561,8 @@ sub _lei_atfork_child {
 	my ($self, $persist) = @_;
 	# we need to explicitly close things which are on stack
 	if ($persist) {
-		chdir '/' or die "chdir(/): $!";
+		open $self->{3}, '<', '/' or die "open(/) $!";
+		fchdir($self);
 		close($_) for (grep(defined, delete @$self{qw(0 1 2 sock)}));
 		if (my $cfg = $self->{cfg}) {
 			delete @$cfg{qw(-lei_store -watches -lei_note_event)};
@@ -544,8 +570,10 @@ sub _lei_atfork_child {
 	} else { # worker, Net::NNTP (Net::Cmd) uses STDERR directly
 		open STDERR, '+>&='.fileno($self->{2}) or warn "open $!";
 		STDERR->autoflush(1);
+		POSIX::setpgid(0, $$) // die "setpgid(0, $$): $!";
 	}
-	close($_) for (grep(defined, delete @$self{qw(3 old_1 au_done)}));
+	close($_) for (grep(defined, delete @$self{qw(old_1 au_done)}));
+	delete $self->{-socks};
 	if (my $op_c = delete $self->{pkt_op_c}) {
 		close(delete $op_c->{sock});
 	}
@@ -554,14 +582,20 @@ sub _lei_atfork_child {
 	}
 	close $listener if $listener;
 	undef $listener;
+	$dir_idle->force_close if $dir_idle;
 	undef $dir_idle;
 	%PATH2CFG = ();
 	$MDIR2CFGPATH = {};
 	eval 'no warnings; undef $PublicInbox::LeiNoteEvent::to_flush';
 	undef $errors_log;
 	$quit = \&CORE::exit;
-	$self->{-eml_noisy} or # only "lei import" sets this atm
-		$SIG{__WARN__} = PublicInbox::Eml::warn_ignore_cb();
+	if (!$self->{-eml_noisy}) { # only "lei import" sets this atm
+		my $cb = $SIG{__WARN__} // \&CORE::warn;
+		$SIG{__WARN__} = sub {
+			$cb->(@_) unless PublicInbox::Eml::warn_ignore(@_)
+		};
+	}
+	$SIG{TERM} = sub { exit(128 + 15) };
 	$current_lei = $persist ? undef : $self; # for SIG{__WARN__}
 }
 
@@ -588,16 +622,22 @@ sub incr {
 	$self->{counters}->{$field} += $nr;
 }
 
+sub pkt_ops {
+	my ($lei, $ops) = @_;
+	$ops->{fail_handler} = [ $lei ];
+	$ops->{sigpipe_handler} = [ $lei ];
+	$ops->{x_it} = [ $lei ];
+	$ops->{child_error} = [ $lei ];
+	$ops->{incr} = [ $lei ];
+	$ops;
+}
+
 sub workers_start {
 	my ($lei, $wq, $jobs, $ops, $flds) = @_;
-	$ops = {
-		'!' => [ \&fail_handler, $lei ],
-		'|' => [ \&sigpipe_handler, $lei ],
-		'x_it' => [ \&x_it, $lei ],
-		'child_error' => [ \&child_error, $lei ],
-		'incr' => [ \&incr, $lei ],
-		($ops ? %$ops : ()),
-	};
+	$ops //= {};
+	($wq->can('net_merge_all_done') && $lei->{auth}) and
+		$lei->{auth}->op_merge($ops, $wq, $lei);
+	pkt_ops($lei, $ops);
 	$ops->{''} //= [ $wq->can('_lei_wq_eof') || \&wq_eof, $lei ];
 	my $end = $lei->pkt_op_pair;
 	my $ident = $wq->{-wq_ident} // "lei-$lei->{cmd} worker";
@@ -607,18 +647,29 @@ sub workers_start {
 	my $op_c = delete $lei->{pkt_op_c};
 	@$end = ();
 	$lei->event_step_init;
+	$wq->wq_wait_async($wq->can('_wq_done_wait') // \&wq_done_wait, $lei);
 	($op_c, $ops);
 }
 
 # call this when we're ready to wait on events and yield to other clients
 sub wait_wq_events {
 	my ($lei, $op_c, $ops) = @_;
+	my $wq1 = $lei->{wq1};
+	($wq1 && $wq1->can('net_merge_all_done') && !$lei->{auth}) and
+		$wq1->net_merge_all_done;
 	for my $wq (grep(defined, @$lei{qw(ikw pmd)})) { # auxiliary WQs
-		$wq->wq_close(1);
+		$wq->wq_close;
 	}
 	$op_c->{ops} = $ops;
 }
 
+sub wq1_start {
+	my ($lei, $wq, $jobs) = @_;
+	my ($op_c, $ops) = workers_start($lei, $wq, $jobs // 1);
+	$lei->{wq1} = $wq;
+	wait_wq_events($lei, $op_c, $ops); # net_merge_all_done if !{auth}
+}
+
 sub _help {
 	require PublicInbox::LeiHelp;
 	PublicInbox::LeiHelp::call($_[0], $_[1], \%CMD, \%OPTDESC);
@@ -747,9 +798,10 @@ sub lazy_cb ($$$) {
 
 sub dispatch {
 	my ($self, $cmd, @argv) = @_;
+	fchdir($self);
+	local %ENV = %{$self->{env}};
 	local $current_lei = $self; # for __WARN__
 	$self->{2}->autoflush(1); # keep stdout buffered until x_it|DESTROY
-	dump_and_clear_log("from previous run\n");
 	return _help($self, 'no command given') unless defined($cmd);
 	# do not support Getopt bundling for this
 	while ($cmd eq '-C' || $cmd eq '-c') {
@@ -766,7 +818,8 @@ sub dispatch {
 				next if $d eq ''; # same as git(1)
 				chdir $d or return fail($self, "cd $d: $!");
 			}
-			open $self->{3}, '.' or return fail($self, "open . $!");
+			open $self->{3}, '<', '.' or
+				return fail($self, "open . $!");
 		}
 		$cb->($self, @argv);
 	} elsif (grep(/\A-/, $cmd, @argv)) { # --help or -h only
@@ -796,18 +849,18 @@ sub _lei_cfg ($;$) {
 			delete $self->{cfg};
 			return bless {}, 'PublicInbox::Config';
 		}
-		my (undef, $cfg_dir, undef) = File::Spec->splitpath($f);
+		my ($cfg_dir) = ($f =~ m!(.*?/)[^/]+\z!);
 		-d $cfg_dir or mkpath($cfg_dir) or die "mkpath($cfg_dir): $!\n";
 		open my $fh, '>>', $f or die "open($f): $!\n";
 		@st = stat($fh) or die "fstat($f): $!\n";
 		$cur_st = pack('dd', $st[10], $st[7]);
 		qerr($self, "# $f created") if $self->{cmd} ne 'config';
 	}
-	my $cfg = PublicInbox::Config->git_config_dump($f);
+	my $cfg = PublicInbox::Config->git_config_dump($f, $self->{2});
 	$cfg->{-st} = $cur_st;
 	$cfg->{'-f'} = $f;
-	if ($sto && File::Spec->canonpath($sto_dir // store_path($self))
-			eq File::Spec->canonpath($cfg->{'leistore.dir'} //
+	if ($sto && canonpath_harder($sto_dir // store_path($self))
+			eq canonpath_harder($cfg->{'leistore.dir'} //
 						store_path($self))) {
 		$cfg->{-lei_store} = $sto;
 		$cfg->{-lei_note_event} = $lne;
@@ -815,9 +868,7 @@ sub _lei_cfg ($;$) {
 	}
 	if (scalar(keys %PATH2CFG) > 5) {
 		# FIXME: use inotify/EVFILT_VNODE to detect unlinked configs
-		for my $k (keys %PATH2CFG) {
-			delete($PATH2CFG{$k}) unless -f $k
-		}
+		delete(@PATH2CFG{grep(!-f, keys %PATH2CFG)});
 	}
 	$self->{cfg} = $PATH2CFG{$f} = $cfg;
 	refresh_watches($self);
@@ -844,14 +895,6 @@ sub _config {
 	waitpid(spawn($cmd, \%env, \%rdr), 0);
 }
 
-sub lei_config {
-	my ($self, @argv) = @_;
-	$self->{opt}->{'config-file'} and return fail $self,
-		"config file switches not supported by `lei config'";
-	_config(@_);
-	x_it($self, $?) if $?;
-}
-
 sub lei_daemon_pid { puts shift, $$ }
 
 sub lei_daemon_kill {
@@ -935,6 +978,9 @@ sub exec_buf ($$) {
 
 sub start_mua {
 	my ($self) = @_;
+	if ($self->{ovv}->{fmt} =~ /\A(?:maildir)\z/) { # TODO: IMAP
+		refresh_watches($self);
+	}
 	my $mua = $self->{opt}->{mua} // return;
 	my $mfolder = $self->{ovv}->{dst};
 	my (@cmd, $replaced);
@@ -988,7 +1034,7 @@ sub poke_mua { # forces terminal MUAs to wake up and hopefully notice new mail
 			$cmd = [ Text::ParseWords::shellwords($cmd) ];
 			send($sock, exec_buf($cmd, {}), MSG_EOR) if $sock;
 		} else {
-			err($self, "W: unsupported --alert=$op"); # non-fatal
+			warn("W: unsupported --alert=$op\n"); # non-fatal
 		}
 	}
 }
@@ -1009,13 +1055,15 @@ sub path_to_fd {
 
 # caller needs to "-t $self->{1}" to check if tty
 sub start_pager {
-	my ($self) = @_;
+	my ($self, $new_env) = @_;
 	my $fh = popen_rd([qw(git var GIT_PAGER)]);
 	chomp(my $pager = <$fh> // '');
 	close($fh) or warn "`git var PAGER' error: \$?=$?";
 	return if $pager eq 'cat' || $pager eq '';
-	my $new_env = { LESS => 'FRX', LV => '-c' };
-	$new_env->{MORE} = 'FRX' if $^O eq 'freebsd';
+	$new_env //= {};
+	$new_env->{LESS} //= 'FRX';
+	$new_env->{LV} //= '-c';
+	$new_env->{MORE} = $new_env->{LESS} if $^O eq 'freebsd';
 	pipe(my ($r, $wpager)) or return warn "pipe: $!";
 	my $rdr = { 0 => $r, 1 => $self->{1}, 2 => $self->{2} };
 	my $pgr = [ undef, @$rdr{1, 2} ];
@@ -1032,12 +1080,23 @@ sub start_pager {
 	$self->{pgr} = $pgr;
 }
 
+# display a message for user before spawning full-screen $VISUAL
+sub pgr_err {
+	my ($self, @msg) = @_;
+	return warn(@msg) unless $self->{sock} && -t $self->{2};
+	start_pager($self, { LESS => 'RX' }); # no 'F' so we prompt
+	print { $self->{2} } @msg;
+	$self->{2}->autoflush(1);
+	stop_pager($self);
+	send($self->{sock}, 'wait', MSG_EOR); # wait for user to quit pager
+}
+
 sub stop_pager {
 	my ($self) = @_;
 	my $pgr = delete($self->{pgr}) or return;
 	$self->{2} = $pgr->[2];
-	# do not restore original stdout, just close it so we error out
 	close(delete($self->{1})) if $self->{1};
+	$self->{1} = $pgr->[1];
 }
 
 sub accept_dispatch { # Listener {post_accept} callback
@@ -1067,21 +1126,16 @@ sub accept_dispatch { # Listener {post_accept} callback
 	my ($argc, @argv) = split(/\0/, $buf, -1);
 	undef $buf;
 	my %env = map { split(/=/, $_, 2) } splice(@argv, $argc);
-	if (chdir($self->{3})) {
-		local %ENV = %env;
-		$self->{env} = \%env;
-		eval { dispatch($self, @argv) };
-		send($sock, $@, MSG_EOR) if $@;
-	} else {
-		send($sock, "fchdir: $!", MSG_EOR); # implicit close
-	}
+	$self->{env} = \%env;
+	eval { dispatch($self, @argv) };
+	$self->fail($@) if $@;
 }
 
 sub dclose {
 	my ($self) = @_;
+	local $current_lei = $self;
 	delete $self->{-progress};
 	_drop_wq($self) if $self->{failed};
-	close(delete $self->{1}) if $self->{1}; # may reap_compress
 	$self->close if $self->{-event_init_done}; # PublicInbox::DS::close
 }
 
@@ -1089,23 +1143,31 @@ sub dclose {
 sub event_step {
 	my ($self) = @_;
 	local %ENV = %{$self->{env}};
-	my $sock = $self->{sock};
 	local $current_lei = $self;
 	eval {
-		while (my @fds = $recv_cmd->($sock, my $buf, 4096)) {
-			if (scalar(@fds) == 1 && !defined($fds[0])) {
-				return if $! == EAGAIN;
-				next if $! == EINTR;
-				last if $! == ECONNRESET;
-				die "recvmsg: $!";
-			}
-			for my $fd (@fds) {
-				open my $rfh, '+<&=', $fd;
+		my @fds = $recv_cmd->($self->{sock} // return, my $buf, 4096);
+		if (scalar(@fds) == 1 && !defined($fds[0])) {
+			return if $! == EAGAIN;
+			die "recvmsg: $!" if $! != ECONNRESET;
+			$buf = '';
+			@fds = (); # for open loop below:
+		}
+		for (@fds) { open my $rfh, '+<&=', $_ }
+		if ($buf eq '') {
+			_drop_wq($self); # EOF, client disconnected
+			dclose($self);
+			$buf = 'TERM';
+		}
+		if ($buf =~ /\A(?:STOP|CONT|TERM)\z/) {
+			my $sig = "-$buf";
+			for my $wq (grep(defined, @$self{@WQ_KEYS})) {
+				$wq->wq_kill($sig);
 			}
+		} else {
 			die "unrecognized client signal: $buf";
 		}
-		_drop_wq($self); # EOF, client disconnected
-		dclose($self);
+		my $s = $self->{-socks} // []; # lei up --all
+		@$s = grep { send($_, $buf, MSG_EOR) } @$s;
 	};
 	if (my $err = $@) {
 		eval { $self->fail($err) };
@@ -1116,9 +1178,10 @@ sub event_step {
 sub event_step_init {
 	my ($self) = @_;
 	my $sock = $self->{sock} or return;
-	$self->{-event_init_done} //= do { # persist til $ops done
-		$self->SUPER::new($sock, EPOLLIN|EPOLLET);
-		$sock;
+	$self->{-event_init_done} // do { # persist til $ops done
+		$sock->blocking(0);
+		$self->SUPER::new($sock, EPOLLIN);
+		$self->{-event_init_done} = $sock;
 	};
 }
 
@@ -1128,10 +1191,12 @@ sub oldset { $oldset }
 
 sub dump_and_clear_log {
 	if (defined($errors_log) && -s STDIN && seek(STDIN, 0, SEEK_SET)) {
-		my @pfx = @_;
-		unshift(@pfx, "$errors_log ") if @pfx;
-		warn @pfx, do { local $/; <STDIN> };
-		truncate(STDIN, 0) or warn "ftruncate ($errors_log): $!";
+		openlog('lei-daemon', 'pid,nowait,nofatal,ndelay', 'user');
+		chomp(my @lines = <STDIN>);
+		truncate(STDIN, 0) or
+			syslog('warning', "ftruncate (%s): %m", $errors_log);
+		for my $l (@lines) { syslog('warning', '%s', $l) }
+		closelog(); # don't share across fork
 	}
 }
 
@@ -1141,8 +1206,7 @@ sub cfg2lei ($) {
 	open($lei->{0}, '<&', \*STDIN) or die "dup 0: $!";
 	open($lei->{1}, '>>&', \*STDOUT) or die "dup 1: $!";
 	open($lei->{2}, '>>&', \*STDERR) or die "dup 2: $!";
-	open($lei->{3}, '/') or die "open /: $!";
-	chdir($lei->{3}) or die "chdir /': $!";
+	open($lei->{3}, '<', '/') or die "open /: $!";
 	my ($x, $y);
 	socketpair($x, $y, AF_UNIX, SOCK_SEQPACKET, 0) or die "socketpair: $!";
 	$lei->{sock} = $x;
@@ -1156,16 +1220,15 @@ sub dir_idle_handler ($) { # PublicInbox::DirIdle callback
 	my $fn = $ev->fullname;
 	if ($fn =~ m!\A(.+)/(new|cur)/([^/]+)\z!) { # Maildir file
 		my ($mdir, $nc, $bn) = ($1, $2, $3);
-		$nc = '' if $ev->IN_DELETE;
+		$nc = '' if $ev->IN_DELETE || $ev->IN_MOVED_FROM;
 		for my $f (keys %{$MDIR2CFGPATH->{$mdir} // {}}) {
 			my $cfg = $PATH2CFG{$f} // next;
 			eval {
-				local %ENV = %{$cfg->{-env}};
 				my $lei = cfg2lei($cfg);
 				$lei->dispatch('note-event',
 						"maildir:$mdir", $nc, $bn, $fn);
 			};
-			warn "E note-event $f: $@\n" if $@;
+			warn "E: note-event $f: $@\n" if $@;
 		}
 	}
 	if ($ev->can('cancel') && ($ev->IN_IGNORE || $ev->IN_UNMOUNT)) {
@@ -1190,6 +1253,7 @@ sub lazy_start {
 	$errors_log = "$sock_dir/errors.log";
 	my $addr = pack_sockaddr_un($path);
 	my $lk = bless { lock_path => $errors_log }, 'PublicInbox::Lock';
+	umask(077) // die("umask(077): $!");
 	$lk->lock_acquire;
 	socket($listener, AF_UNIX, SOCK_SEQPACKET, 0) or die "socket: $!";
 	if ($errno == ECONNREFUSED || $errno == ENOENT) {
@@ -1201,9 +1265,7 @@ sub lazy_start {
 		$! = $errno; # allow interpolation to stringify in die
 		die "connect($path): $!";
 	}
-	umask(077) // die("umask(077): $!");
 	bind($listener, $addr) or die "bind($path): $!";
-	listen($listener, 1024) or die "listen: $!";
 	$lk->lock_release;
 	undef $lk;
 	my @st = stat($path) or die "stat($path): $!";
@@ -1225,7 +1287,7 @@ sub lazy_start {
 	(-p STDOUT) or die "E: stdout must be a pipe\n";
 	open(STDIN, '+>>', $errors_log) or die "open($errors_log): $!";
 	STDIN->autoflush(1);
-	dump_and_clear_log("from previous daemon process:\n");
+	dump_and_clear_log();
 	POSIX::setsid() > 0 or die "setsid: $!";
 	my $pid = fork // die "fork: $!";
 	return if $pid;
@@ -1239,6 +1301,7 @@ sub lazy_start {
 		my (undef, $eof_p) = PublicInbox::PktOp->pair;
 		sub {
 			$exit_code //= shift;
+			eval 'PublicInbox::LeiNoteEvent::flush_task()';
 			my $lis = $pil or exit($exit_code);
 			# closing eof_p triggers \&noop wakeup
 			$listener = $eof_p = $pil = $path = undef;
@@ -1255,23 +1318,12 @@ sub lazy_start {
 		USR1 => \&noop,
 		USR2 => \&noop,
 	};
-	my $sigfd = PublicInbox::Sigfd->new($sig, SFD_NONBLOCK);
-	local @SIG{keys %$sig} = values(%$sig) unless $sigfd;
-	undef $sig;
-	local $SIG{PIPE} = 'IGNORE';
 	require PublicInbox::DirIdle;
-	local $dir_idle = PublicInbox::DirIdle->new([$sock_dir], sub {
+	local $dir_idle = PublicInbox::DirIdle->new(sub {
 		# just rely on wakeup to hit PostLoopCallback set below
 		dir_idle_handler($_[0]) if $_[0]->fullname ne $path;
-	}, 1);
-	if ($sigfd) {
-		undef $sigfd; # unref, already in DS::DescriptorMap
-	} else {
-		# wake up every second to accept signals if we don't
-		# have signalfd or IO::KQueue:
-		PublicInbox::DS::sig_setmask($oldset);
-		PublicInbox::DS->SetLoopTimeout(1000);
-	}
+	});
+	$dir_idle->add_watches([$sock_dir]);
 	PublicInbox::DS->SetPostLoopCallback(sub {
 		my ($dmap, undef) = @_;
 		if (@st = defined($path) ? stat($path) : ()) {
@@ -1285,11 +1337,10 @@ sub lazy_start {
 			$quit->();
 		}
 		return 1 if defined($path);
-		my $now = now();
 		my $n = 0;
 		for my $s (values %$dmap) {
 			$s->can('busy') or next;
-			if ($s->busy($now)) {
+			if ($s->busy) {
 				++$n;
 			} else {
 				$s->close;
@@ -1308,7 +1359,11 @@ sub lazy_start {
 	open STDERR, '>&STDIN' or die "redirect stderr failed: $!";
 	open STDOUT, '>&STDIN' or die "redirect stdout failed: $!";
 	# $daemon pipe to `lei' closed, main loop begins:
-	PublicInbox::DS->EventLoop;
+	eval { PublicInbox::DS::event_loop($sig, $oldset) };
+	warn "event loop error: $@\n" if $@;
+	# exit() may trigger waitpid via various DESTROY, ensure interruptible
+	PublicInbox::DS::sig_setmask($oldset);
+	dump_and_clear_log();
 	exit($exit_code // 0);
 }
 
@@ -1321,17 +1376,19 @@ sub DESTROY {
 	if (my $counters = delete $self->{counters}) {
 		for my $k (sort keys %$counters) {
 			my $nr = $counters->{$k};
-			$self->child_error(1 << 8, "$nr $k messages");
+			$self->child_error(0, "$nr $k messages");
 		}
 	}
 	$self->{1}->autoflush(1) if $self->{1};
 	stop_pager($self);
+	dump_and_clear_log();
 	# preserve $? for ->fail or ->x_it code
 }
 
 sub wq_done_wait { # dwaitpid callback
 	my ($arg, $pid) = @_;
 	my ($wq, $lei) = @$arg;
+	local $current_lei = $lei;
 	my $err_type = $lei->{-err_type};
 	$? and $lei->child_error($?,
 			$err_type ? "$err_type errors during $lei->{cmd}" : ());
@@ -1341,13 +1398,13 @@ sub wq_done_wait { # dwaitpid callback
 sub fchdir {
 	my ($lei) = @_;
 	my $dh = $lei->{3} // die 'BUG: lei->{3} (CWD) gone';
-	chdir($dh) || $lei->fail("fchdir: $!");
+	chdir($dh) || die "fchdir: $!";
 }
 
 sub wq_eof { # EOF callback for main daemon
 	my ($lei) = @_;
-	my $wq1 = delete $lei->{wq1} // return $lei->fail; # already failed
-	$wq1->wq_wait_old(\&wq_done_wait, $lei);
+	local $current_lei = $lei;
+	delete $lei->{wq1} // return $lei->fail; # already failed
 }
 
 sub watch_state_ok ($) {
@@ -1363,8 +1420,17 @@ sub cancel_maildir_watch ($$) {
 	for my $x (@{$w // []}) { $x->cancel }
 }
 
+sub add_maildir_watch ($$) {
+	my ($d, $cfg_f) = @_;
+	if (!exists($MDIR2CFGPATH->{$d}->{$cfg_f})) {
+		my @w = $dir_idle->add_watches(["$d/cur", "$d/new"], 1);
+		push @{$MDIR2CFGPATH->{$d}->{$cfg_f}}, @w if @w;
+	}
+}
+
 sub refresh_watches {
 	my ($lei) = @_;
+	$dir_idle or return;
 	my $cfg = _lei_cfg($lei) or return;
 	my $old = $cfg->{-watches};
 	my $watches = $cfg->{-watches} //= {};
@@ -1373,25 +1439,41 @@ sub refresh_watches {
 	for my $w (grep(/\Awatch\..+\.state\z/, keys %$cfg)) {
 		my $url = substr($w, length('watch.'), -length('.state'));
 		require PublicInbox::LeiWatch;
-		my $lw = $watches->{$url} //= PublicInbox::LeiWatch->new($url);
+		$watches->{$url} //= PublicInbox::LeiWatch->new($url);
 		$seen{$url} = undef;
-		my $state = $cfg->get_1("watch.$url", 'state');
+		my $state = $cfg->get_1("watch.$url.state");
 		if (!watch_state_ok($state)) {
-			$lei->err("watch.$url.state=$state not supported");
+			warn("watch.$url.state=$state not supported\n");
 			next;
 		}
 		if ($url =~ /\Amaildir:(.+)/i) {
-			my $d = File::Spec->canonpath($1);
+			my $d = canonpath_harder($1);
 			if ($state eq 'pause') {
 				cancel_maildir_watch($d, $cfg_f);
-			} elsif (!exists($MDIR2CFGPATH->{$d}->{$cfg_f})) {
-				my @w = $dir_idle->add_watches(
-						["$d/cur", "$d/new"], 1);
-				push @{$MDIR2CFGPATH->{$d}->{$cfg_f}}, @w if @w;
+			} else {
+				add_maildir_watch($d, $cfg_f);
 			}
 		} else { # TODO: imap/nntp/jmap
-			$lei->child_error(1,
-				"E: watch $url not supported, yet");
+			$lei->child_error(0, "E: watch $url not supported, yet")
+		}
+	}
+
+	# add all known Maildir folders as implicit watches
+	my $lms = $lei->lms;
+	if ($lms) {
+		$lms->lms_write_prepare;
+		for my $d ($lms->folders('maildir:')) {
+			substr($d, 0, length('maildir:')) = '';
+
+			# fixup old bugs while we're iterating:
+			my $cd = canonpath_harder($d);
+			my $f = "maildir:$cd";
+			$lms->rename_folder("maildir:$d", $f) if $d ne $cd;
+			next if $watches->{$f}; # may be set to pause
+			require PublicInbox::LeiWatch;
+			$watches->{$f} = PublicInbox::LeiWatch->new($f);
+			$seen{$f} = undef;
+			add_maildir_watch($cd, $cfg_f);
 		}
 	}
 	if ($old) { # cull old non-existent entries
@@ -1399,10 +1481,10 @@ sub refresh_watches {
 			next if exists $seen{$url};
 			delete $old->{$url};
 			if ($url =~ /\Amaildir:(.+)/i) {
-				my $d = File::Spec->canonpath($1);
+				my $d = canonpath_harder($1);
 				cancel_maildir_watch($d, $cfg_f);
 			} else { # TODO: imap/nntp/jmap
-				$lei->child_error(1, "E: watch $url TODO");
+				$lei->child_error(0, "E: watch $url TODO");
 			}
 		}
 	}
@@ -1413,4 +1495,51 @@ sub refresh_watches {
 	}
 }
 
+# TODO: support SHA-256
+sub git_oid {
+	my $eml = $_[-1];
+	$eml->header_set($_) for @PublicInbox::Import::UNWANTED_HEADERS;
+	git_sha(1, $eml);
+}
+
+sub lms {
+	my ($lei, $creat) = @_;
+	my $sto = $lei->{sto} // _lei_store($lei) // return;
+	require PublicInbox::LeiMailSync;
+	my $f = "$sto->{priv_eidx}->{topdir}/mail_sync.sqlite3";
+	(-f $f || $creat) ? PublicInbox::LeiMailSync->new($f) : undef;
+}
+
+sub sto_done_request {
+	my ($lei, $sock) = @_;
+	local $current_lei = $lei;
+	eval {
+		if ($sock //= $lei->{sock}) { # issue, async wait
+			$lei->{sto}->wq_io_do('done', [ $sock ]);
+		} else { # forcibly wait
+			my $wait = $lei->{sto}->wq_do('done');
+		}
+	};
+	warn($@) if $@;
+}
+
+sub cfg_dump ($$) {
+	my ($lei, $f) = @_;
+	my $ret = eval { PublicInbox::Config->git_config_dump($f, $lei->{2}) };
+	return $ret if !$@;
+	warn($@);
+	undef;
+}
+
+sub request_umask {
+	my ($lei) = @_;
+	my $s = $lei->{sock} // return;
+	send($s, 'umask', MSG_EOR) // die "send: $!";
+	vec(my $rvec = '', fileno($s), 1) = 1;
+	select($rvec, undef, undef, 2) or die 'timeout waiting for umask';
+	recv($s, my $v, 5, 0) // die "recv: $!";
+	(my $u, $lei->{client_umask}) = unpack('AV', $v);
+	$u eq 'u' or warn "E: recv $v has no umask";
+}
+
 1;