1 # Copyright (C) 2020-2021 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # Backend for `lei' (local email interface). Unlike the C10K-oriented
5 # PublicInbox::Daemon, this is designed exclusively to handle trusted
6 # local clients with read/write access to the FS and use as many
7 # system resources as the local user has access to.
8 package PublicInbox::LEI;
11 use parent qw(PublicInbox::DS PublicInbox::LeiExternal
12 PublicInbox::LeiQuery);
14 use Socket qw(AF_UNIX SOCK_SEQPACKET MSG_EOR pack_sockaddr_un);
15 use Errno qw(EPIPE EAGAIN EINTR ECONNREFUSED ENOENT ECONNRESET);
17 use POSIX qw(strftime);
19 use Fcntl qw(SEEK_SET);
20 use PublicInbox::Config;
21 use PublicInbox::Syscall qw(SFD_NONBLOCK EPOLLIN EPOLLET);
22 use PublicInbox::Sigfd;
23 use PublicInbox::DS qw(now dwaitpid);
24 use PublicInbox::Spawn qw(spawn popen_rd);
25 use PublicInbox::Lock;
27 use Time::HiRes qw(stat); # ctime comparisons for config cache
28 use File::Path qw(mkpath);
30 our $quit = \&CORE::exit;
31 our ($current_lei, $errors_log, $listener, $oldset);
32 my ($recv_cmd, $send_cmd);
33 my $GLP = Getopt::Long::Parser->new;
34 $GLP->configure(qw(gnu_getopt no_ignore_case auto_abbrev));
35 my $GLP_PASS = Getopt::Long::Parser->new;
36 $GLP_PASS->configure(qw(gnu_getopt no_ignore_case auto_abbrev pass_through));
38 our %PATH2CFG; # persistent for socket daemon
40 # TBD: this is a documentation mechanism to show a subcommand
41 # (may) pass options through to another command:
42 sub pass_through { $GLP_PASS }
46 my ($spec, $re_str) = @_; # 'limit|n=i', '([0-9]+)'
47 my ($key) = ($spec =~ m/\A([a-z]+)/g);
48 my $cb = sub { # Getopt::Long "<>" catch-all handler
50 if ($arg =~ /\A-($re_str)\z/) {
52 } elsif ($arg eq '--') { # "--" arg separator, ignore first
53 push @{$OPT->{-argv}}, $arg if $OPT->{'--'}++;
54 # lone (single) dash is handled elsewhere
55 } elsif (substr($arg, 0, 1) eq '-') {
57 push @{$OPT->{-argv}}, $arg;
59 die "bad argument: $arg\n";
62 push @{$OPT->{-argv}}, $arg;
65 ($spec, '<>' => $cb, $GLP_PASS) # for Getopt::Long
68 # rel2abs preserves symlinks in parent, unlike abs_path
71 if (index($p, '/') == 0) { # already absolute
72 $p =~ tr!/!/!s; # squeeze redundant slashes
75 my $pwd = $self->{env}->{PWD};
78 my $xcwd = $self->{3} //
79 ($cwd = getcwd() // die "getcwd(PWD=$pwd): $!");
80 if (my @st_pwd = stat($pwd)) {
81 my @st_cwd = stat($xcwd) or die "stat($xcwd): $!";
82 "@st_pwd[1,0]" eq "@st_cwd[1,0]" or
83 $self->{env}->{PWD} = $pwd = undef;
84 } else { # PWD was invalid
85 $self->{env}->{PWD} = $pwd = undef;
88 $pwd //= $self->{env}->{PWD} = $cwd // getcwd() // die "getcwd: $!";
89 File::Spec->rel2abs($p, $pwd);
92 # abs_path resolves symlinks in parent iff all parents exist
93 sub abs_path { Cwd::abs_path($_[1]) // rel2abs(@_) }
95 sub share_path ($) { # $HOME/.local/share/lei/$FOO
97 rel2abs($self, ($self->{env}->{XDG_DATA_HOME} //
98 ($self->{env}->{HOME} // '/nonexistent').'/.local/share')
102 sub store_path ($) { share_path($_[0]) . '/store' }
104 sub _config_path ($) {
106 rel2abs($self, ($self->{env}->{XDG_CONFIG_HOME} //
107 ($self->{env}->{HOME} // '/nonexistent').'/.config')
113 rel2abs($self, ($self->{env}->{XDG_CACHE_HOME} //
114 ($self->{env}->{HOME} // '/nonexistent').'/.cache')
120 $self->{ale} //= do {
121 require PublicInbox::LeiALE;
122 $self->_lei_cfg(1)->{ale} //= PublicInbox::LeiALE->new($self);
127 # TODO: drop underscore variants everywhere, they're undocumented
128 qw(fsync|sync! jobs|j=i indexlevel|L=s compact
129 max_size|max-size=s sequential_shard|sequential-shard
130 batch_size|batch-size=s skip-docdata)
133 my @c_opt = qw(c=s@ C=s@ quiet|q);
134 my @lxs_opt = (qw(remote! local! external! include|I=s@ exclude=s@ only=s@
135 import-remote! no-torsocks torsocks=s),
136 PublicInbox::LeiQuery::curl_opt());
138 # we generate shell completion + help using %CMD and %OPTDESC,
139 # see lei__complete() and PublicInbox::LeiHelp
140 # command => [ positional_args, 1-line description, Getopt::Long option spec ]
141 our %CMD = ( # sorted in order of importance/use:
142 'q' => [ '--stdin|SEARCH_TERMS...', 'search for messages matching terms',
143 'stdin|', # /|\z/ must be first for lone dash
145 qw(save output|mfolder|o=s format|f=s dedupe|d=s threads|t+
146 sort|s=s reverse|r offset=i pretty jobs|j=s globoff|g augment|a
147 import-before! lock=s@ rsyncable alert=s@ mua=s verbose|v+
148 color! mail-sync!), @c_opt, opt_dash('limit|n=i', '[0-9]+') ],
150 'up' => [ 'OUTPUT|--all', 'update saved search',
151 qw(jobs|j=s lock=s@ alert=s@ mua=s verbose|v+ all:s), @c_opt ],
153 'lcat' => [ '--stdin|MSGID_OR_URL..', 'display local copy of message(s)',
154 'stdin|', # /|\z/ must be first for lone dash
155 # some of these options are ridiculous for lcat
156 @lxs_opt, qw(output|mfolder|o=s format|f=s dedupe|d=s threads|t+
157 sort|s=s reverse|r offset=i jobs|j=s globoff|g augment|a
158 import-before! lock=s@ rsyncable alert=s@ mua=s verbose|v+
159 color!), @c_opt, opt_dash('limit|n=i', '[0-9]+') ],
161 'blob' => [ 'OID', 'show a git blob, reconstructing from mail if necessary',
162 qw(git-dir=s@ cwd! verbose|v+ mail! oid-a|A=s path-a|a=s path-b|b=s),
165 'add-external' => [ 'LOCATION',
166 'add/set priority of a publicinbox|extindex for extra matches',
167 qw(boost=i mirror=s no-torsocks torsocks=s inbox-version=i
168 verbose|v+), @c_opt, index_opt(),
169 PublicInbox::LeiQuery::curl_opt() ],
170 'ls-external' => [ '[FILTER]', 'list publicinbox|extindex locations',
171 qw(format|f=s z|0 globoff|g invert-match|v local remote), @c_opt ],
172 'ls-label' => [ '', 'list labels', qw(z|0 stats:s), @c_opt ],
173 'ls-mail-sync' => [ '', 'list mail sync folders',
174 qw(z|0 z|0 globoff|g invert-match|v local remote), @c_opt ],
175 'forget-external' => [ 'LOCATION...|--prune',
176 'exclude further results from a publicinbox|extindex',
179 'ls-search' => [ '[PREFIX]', 'list saved search queries',
180 qw(format|f=s pretty l ascii z|0), @c_opt ],
181 'forget-search' => [ 'OUTPUT', 'forget a saved search',
182 qw(verbose|v+), @c_opt ],
183 'edit-search' => [ 'OUTPUT', "edit saved search via `git config --edit'",
186 'plonk' => [ '--threads|--from=IDENT',
187 'exclude mail matching From: or threads from non-Message-ID searches',
188 qw(stdin| threads|t from|f=s mid=s oid=s), @c_opt ],
189 'tag' => [ 'KEYWORDS...',
190 'set/unset keywords and/or labels on message(s)',
191 qw(stdin| in-format|F=s input|i=s@ oid=s@ mid=s@),
192 qw(no-torsocks torsocks=s), PublicInbox::LeiQuery::curl_opt(), @c_opt,
193 pass_through('-kw:foo for delete') ],
194 'forget' => [ '[--stdin|--oid=OID|--by-mid=MID]',
195 "exclude message(s) on stdin from `q' search results",
196 qw(stdin| oid=s exact by-mid|mid:s), @c_opt ],
198 'purge-mailsource' => [ 'LOCATION|--all',
199 'remove imported messages from IMAP, Maildirs, and MH',
200 qw(exact! all jobs:i indexed), @c_opt ],
202 'add-watch' => [ 'LOCATION', 'watch for new messages and flag changes',
203 qw(import! kw! interval=s recursive|r
204 exclude=s include=s), @c_opt ],
205 'ls-watch' => [ '[FILTER...]', 'list active watches with numbers and status',
206 qw(format|f=s z), @c_opt ],
207 'pause-watch' => [ '[WATCH_NUMBER_OR_FILTER]', qw(all local remote), @c_opt ],
208 'resume-watch' => [ '[WATCH_NUMBER_OR_FILTER]', qw(all local remote), @c_opt ],
209 'forget-watch' => [ '{WATCH_NUMBER|--prune}', 'stop and forget a watch',
212 'import' => [ 'LOCATION...|--stdin',
213 'one-time import/update from URL or filesystem',
214 qw(stdin| offset=i recursive|r exclude=s include|I=s
215 lock=s@ in-format|F=s kw! verbose|v+ incremental! mail-sync!),
216 qw(no-torsocks torsocks=s), PublicInbox::LeiQuery::curl_opt(), @c_opt ],
217 'convert' => [ 'LOCATION...|--stdin',
218 'one-time conversion from URL or filesystem to another format',
219 qw(stdin| in-format|F=s out-format|f=s output|mfolder|o=s lock=s@ kw!),
220 qw(no-torsocks torsocks=s), PublicInbox::LeiQuery::curl_opt(), @c_opt ],
221 'p2q' => [ 'FILE|COMMIT_OID|--stdin',
222 "use a patch to generate a query for `lei q --stdin'",
223 qw(stdin| want|w=s@ uri debug), @c_opt ],
224 'config' => [ '[...]', sub {
225 'git-config(1) wrapper for '._config_path($_[0]);
226 }, qw(config-file|system|global|file|f=s), # for conflict detection
227 qw(c=s@ C=s@), pass_through('git config') ],
228 'inspect' => [ 'ITEMS...', 'inspect lei/store and/or local external',
229 qw(pretty ascii dir=s), @c_opt ],
231 'init' => [ '[DIRNAME]', sub {
232 "initialize storage, default: ".store_path($_[0]);
234 'daemon-kill' => [ '[-SIGNAL]', 'signal the lei-daemon',
235 # "-C DIR" conflicts with -CHLD, here, and chdir makes no sense, here
236 opt_dash('signal|s=s', '[0-9]+|(?:[A-Z][A-Z0-9]+)') ],
237 'daemon-pid' => [ '', 'show the PID of the lei-daemon' ],
238 'help' => [ '[SUBCOMMAND]', 'show help' ],
240 # XXX do we need this?
241 # 'git' => [ '[ANYTHING...]', 'git(1) wrapper', pass_through('git') ],
243 'reorder-local-store-and-break-history' => [ '[REFNAME]',
244 'rewrite git history in an attempt to improve compression',
247 # internal commands are prefixed with '_'
248 '_complete' => [ '[...]', 'internal shell completion helper',
249 pass_through('everything') ],
252 # switch descriptions, try to keep consistent across commands
253 # $spec: Getopt::Long option specification
254 # $spec => [@ALLOWED_VALUES (default is first), $description],
255 # $spec => $description
256 # "$SUB_COMMAND TAB $spec" => as above
257 my $stdin_formats = [ 'MAIL_FORMAT|eml|mboxrd|mboxcl2|mboxcl|mboxo',
258 'specify message input format' ];
259 my $ls_format = [ 'OUT|plain|json|null', 'listing output format' ];
261 # we use \x{a0} (non-breaking SP) to avoid wrapping in PublicInbox::LeiHelp
263 'help|h' => 'show this built-in help',
264 'c=s@' => [ 'NAME=VALUE', 'set config option' ],
265 'C=s@' => [ 'DIR', 'chdir to specify to directory' ],
266 'quiet|q' => 'be quiet',
267 'lock=s@' => [ 'METHOD|dotlock|fcntl|flock|none',
268 'mbox(5) locking method(s) to use (default: fcntl,dotlock)' ],
270 'incremental! import' => 'import already seen IMAP and NNTP articles',
271 'globoff|g' => "do not match locations using '*?' wildcards ".
272 "and\xa0'[]'\x{a0}ranges",
273 'color!' => 'disable color (for --format=text)',
274 'verbose|v+' => 'be more verbose',
275 'external!' => 'do not use externals',
276 'mail!' => 'do not look in mail storage for OID',
277 'cwd!' => 'do not look in git repo of current working directory',
278 'oid-a|A=s' => 'pre-image OID',
279 'path-a|a=s' => 'pre-image pathname associated with OID',
280 'path-b|b=s' => 'post-image pathname associated with OID',
281 'git-dir=s@' => 'additional git repository to scan',
282 'proxy=s' => [ 'PROTO://HOST[:PORT]', # shared with curl(1)
283 "proxy for (e.g. `socks5h://0:9050')" ],
284 'torsocks=s' => ['VAL|auto|no|yes',
285 'whether or not to wrap git and curl commands with torsocks'],
286 'no-torsocks' => 'alias for --torsocks=no',
287 'save' => "save a search for `lei up'",
288 'import-remote!' => 'do not memoize remote messages into local store',
290 'type=s' => [ 'any|mid|git', 'disambiguate type' ],
292 'dedupe|d=s' => ['STRATEGY|content|oid|mid|none',
293 'deduplication strategy'],
295 'return all messages in the same threads as the actual match(es)',
297 'want|w=s@' => [ 'PREFIX|dfpost|dfn', # common ones in help...
298 'search prefixes to extract (default: dfpost7)' ],
300 'alert=s@' => ['CMD,:WINCH,:bell,<any command>',
301 'run command(s) or perform ops when done writing to output ' .
302 '(default: ":WINCH,:bell" with --mua and Maildir/IMAP output, ' .
303 'nothing otherwise)' ],
305 'augment|a' => 'augment --output destination instead of clobbering',
307 'output|mfolder|o=s' => [ 'MFOLDER',
308 "destination (e.g.\xa0`/path/to/Maildir', ".
309 "or\xa0`-'\x{a0}for\x{a0}stdout)" ],
311 "MUA to run on --output Maildir or mbox (e.g.\xa0`mutt\xa0-f\xa0%f')" ],
313 'inbox-version=i' => [ 'NUM|1|2',
314 'force a public-inbox version with --mirror'],
315 'mirror=s' => [ 'URL', 'mirror a public-inbox'],
317 # public-inbox-index options
318 'fsync!' => 'speed up indexing after --mirror, risk index corruption',
319 'compact' => 'run compact index after mirroring',
320 'indexlevel|L=s' => [ 'LEVEL|full|medium|basic',
321 "indexlevel with --mirror (default: full)" ],
322 'max_size|max-size=s' => [ 'SIZE',
323 'do not index messages larger than SIZE (default: infinity)' ],
324 'batch_size|batch-size=s' => [ 'SIZE',
325 'flush changes to OS after given number of bytes (default: 1m)' ],
326 'sequential_shard|sequential-shard' =>
327 'index Xapian shards sequentially for slow storage',
329 'drop compatibility w/ public-inbox <1.6 to save ~1.5% space',
332 'OUT|maildir|mboxrd|mboxcl2|mboxcl|mboxo|html|json|jsonl|concatjson',
333 'specify output format, default depends on --output'],
334 'exclude=s@ q' => [ 'LOCATION',
335 'exclude specified external(s) from search' ],
336 'include|I=s@ q' => [ 'LOCATION',
337 'include specified external(s) in search' ],
338 'only=s@ q' => [ 'LOCATION',
339 'only use specified external(s) for search' ],
340 'jobs=s q' => [ '[SEARCH_JOBS][,WRITER_JOBS]',
341 'control number of search and writer jobs' ],
342 'jobs|j=i add-external' => 'set parallelism when indexing after --mirror',
344 'in-format|F=s' => $stdin_formats,
345 'format|f=s ls-search' => ['OUT|json|jsonl|concatjson',
346 'listing output format' ],
347 'l ls-search' => 'long listing format',
348 'format|f=s ls-external' => $ls_format,
350 'limit|n=i@' => ['NUM', 'limit on number of matches (default: 10000)' ],
351 'offset=i' => ['OFF', 'search result offset (default: 0)'],
353 'sort|s=s' => [ 'VAL|received|relevance|docid',
354 "order of results is `--output'-dependent"],
355 'reverse|r' => 'reverse search results', # like sort(1)
357 'boost=i' => 'increase/decrease priority of results (default: 0)',
359 'local' => 'limit operations to the local filesystem',
360 'local!' => 'exclude results from the local filesystem',
361 'remote' => 'limit operations to those requiring network access',
362 'remote!' => 'prevent operations requiring network access',
364 'all:s up' => ['local', 'update all (local) saved searches' ],
366 'mid=s' => 'specify the Message-ID of a message',
367 'oid=s' => 'specify the git object ID of a message',
369 'recursive|r' => 'scan directories/mailboxes/newsgroups recursively',
370 'exclude=s' => 'exclude mailboxes/newsgroups based on pattern',
371 'include=s' => 'include mailboxes/newsgroups based on pattern',
373 'exact' => 'operate on exact header matches only',
374 'exact!' => 'rely on content match instead of exact header matches',
376 'by-mid|mid:s' => [ 'MID', 'match only by Message-ID, ignoring contents' ],
378 'kw!' => 'disable/enable importing keywords (aka "flags")',
380 # xargs, env, use "-0", git(1) uses "-z". We support z|0 everywhere
381 'z|0' => 'use NUL \\0 instead of newline (CR) to delimit lines',
383 'signal|s=s' => [ 'SIG', 'signal to send lei-daemon (default: TERM)' ],
387 'leistore.dir' => 'top-level storage location',
390 my @WQ_KEYS = qw(lxs l2m wq1); # internal workers
394 for my $wq (grep(defined, delete(@$self{@WQ_KEYS}))) {
396 $wq->wq_close(0, undef, $self);
397 } elsif ($wq->wq_kill_old) {
398 $wq->wq_wait_old(undef, $self);
404 # pronounced "exit": x_it(1 << 8) => exit(1); x_it(13) => SIGPIPE
406 my ($self, $code) = @_;
407 # make sure client sees stdout before exit
408 $self->{1}->autoflush(1) if $self->{1};
409 dump_and_clear_log();
410 if (my $s = $self->{pkt_op_p} // $self->{sock}) {
411 send($s, "x_it $code", MSG_EOR);
412 } elsif ($self->{oneshot}) {
413 # don't want to end up using $? from child processes
415 # cleanup anything that has tempfiles or open file handles
417 delete @$self{qw(ovv dedupe sto cfg)};
418 if (my $signum = ($code & 127)) { # usually SIGPIPE (13)
419 $SIG{PIPE} = 'DEFAULT'; # $SIG{$signum} doesn't work
421 sleep(1) while 1; # wait for signal
425 } # else ignore if client disconnected
430 my $err = $self->{2} // ($self->{pgr} // [])->[2] // *STDERR{GLOB};
431 my @eor = (substr($_[-1]//'', -1, 1) eq "\n" ? () : ("\n"));
432 print $err @_, @eor and return;
433 my $old_err = delete $self->{2};
434 close($old_err) if $! == EPIPE && $old_err;
435 $err = $self->{2} = ($self->{pgr} // [])->[2] // *STDERR{GLOB};
436 print $err @_, @eor or print STDERR @_, @eor;
439 sub qerr ($;@) { $_[0]->{opt}->{quiet} or err(shift, @_) }
441 sub fail_handler ($;$$) {
442 my ($lei, $code, $io) = @_;
443 close($io) if $io; # needed to avoid warnings on SIGPIPE
445 x_it($lei, $code // (1 << 8));
448 sub sigpipe_handler { # handles SIGPIPE from @WQ_KEYS workers
449 fail_handler($_[0], 13, delete $_[0]->{1});
452 # PublicInbox::OnDestroy callback for SIGINT to take out the entire pgid
455 dwaitpid($pgid) if kill('-INT', $pgid);
459 my ($self, $buf, $exit_code) = @_;
460 err($self, $buf) if defined $buf;
461 # calls fail_handler:
462 send($self->{pkt_op_p}, '!', MSG_EOR) if $self->{pkt_op_p};
463 x_it($self, ($exit_code // 1) << 8);
469 return if print { $self->{1} // return } @_; # likely
470 return note_sigpipe($self, 1) if $! == EPIPE;
471 my $err = "error writing to output: $!";
476 sub puts ($;@) { out(shift, map { "$_\n" } @_) }
478 sub child_error { # passes non-fatal curl exit codes to user
479 my ($self, $child_error, $msg) = @_; # child_error is $?
480 $self->err($msg) if $msg;
481 if (my $s = $self->{pkt_op_p} // $self->{sock}) {
482 # send to the parent lei-daemon or to lei(1) client
483 send($s, "child_error $child_error", MSG_EOR);
484 } elsif (!$PublicInbox::DS::in_loop) {
485 $self->{child_error} = $child_error;
486 } # else noop if client disconnected
489 sub note_sigpipe { # triggers sigpipe_handler
490 my ($self, $fd) = @_;
491 close(delete($self->{$fd})); # explicit close silences Perl warning
492 send($self->{pkt_op_p}, '|', MSG_EOR) if $self->{pkt_op_p};
496 sub _lei_atfork_child {
497 my ($self, $persist) = @_;
498 # we need to explicitly close things which are on stack
500 chdir '/' or die "chdir(/): $!";
501 close($_) for (grep(defined, delete @$self{qw(0 1 2 sock)}));
502 if (my $cfg = $self->{cfg}) {
503 delete $cfg->{-lei_store};
505 } else { # worker, Net::NNTP (Net::Cmd) uses STDERR directly
506 open STDERR, '+>&='.fileno($self->{2}) or warn "open $!";
507 STDERR->autoflush(1);
509 close($_) for (grep(defined, delete @$self{qw(3 old_1 au_done)}));
510 if (my $op_c = delete $self->{pkt_op_c}) {
511 close(delete $op_c->{sock});
513 if (my $pgr = delete $self->{pgr}) {
514 close($_) for (@$pgr[1,2]);
516 close $listener if $listener;
520 $quit = \&CORE::exit;
521 $self->{-eml_noisy} or # only "lei import" sets this atm
522 $SIG{__WARN__} = PublicInbox::Eml::warn_ignore_cb();
523 $current_lei = $persist ? undef : $self; # for SIG{__WARN__}
526 sub _delete_pkt_op { # OnDestroy callback to prevent leaks on die
528 if (my $op = delete $self->{pkt_op_c}) { # in case of die
529 $op->close; # PublicInbox::PktOp::close
531 my $unclosed_after_die = delete($self->{pkt_op_p}) or return;
532 close $unclosed_after_die;
537 require PublicInbox::OnDestroy;
538 require PublicInbox::PktOp;
539 my $end = PublicInbox::OnDestroy->new($$, \&_delete_pkt_op, $self);
540 @$self{qw(pkt_op_c pkt_op_p)} = PublicInbox::PktOp->pair;
545 my ($lei, $wq, $jobs, $ops) = @_;
547 '!' => [ \&fail_handler, $lei ],
548 '|' => [ \&sigpipe_handler, $lei ],
549 'x_it' => [ \&x_it, $lei ],
550 'child_error' => [ \&child_error, $lei ],
553 $ops->{''} //= [ $wq->can('_lei_wq_eof') || \&wq_eof, $lei ];
554 my $end = $lei->pkt_op_pair;
555 my $ident = $wq->{-wq_ident} // "lei-$lei->{cmd} worker";
556 $wq->wq_workers_start($ident, $jobs, $lei->oldset, { lei => $lei });
557 delete $lei->{pkt_op_p};
558 my $op_c = delete $lei->{pkt_op_c};
560 $lei->event_step_init;
565 require PublicInbox::LeiHelp;
566 PublicInbox::LeiHelp::call($_[0], $_[1], \%CMD, \%OPTDESC);
570 my ($self, $cmd, $argv) = @_;
571 # allow _complete --help to complete, not show help
572 return 1 if substr($cmd, 0, 1) eq '_';
574 $OPT = $self->{opt} //= {};
575 my $info = $CMD{$cmd} // [ '[...]' ];
576 my ($proto, undef, @spec) = @$info;
577 my $glp = ref($spec[-1]) eq ref($GLP) ? pop(@spec) : $GLP;
578 push @spec, qw(help|h);
580 if ($spec[0] =~ s/\|\z//s) { # "stdin|" or "clear|" allows "-" alias
581 $lone_dash = $spec[0];
582 $OPT->{$spec[0]} = \(my $var);
583 push @spec, '' => \$var;
585 $glp->getoptionsfromarray($argv, $OPT, @spec) or
586 return _help($self, "bad arguments or options for $cmd");
587 return _help($self) if $OPT->{help};
589 push @$argv, @{$OPT->{-argv}} if defined($OPT->{-argv});
591 # "-" aliases "stdin" or "clear"
592 $OPT->{$lone_dash} = ${$OPT->{$lone_dash}} if defined $lone_dash;
595 my $POS_ARG = '[A-Z][A-Z0-9_]+';
597 my @args = split(/ /, $proto);
598 for my $var (@args) {
599 if ($var =~ /\A$POS_ARG\.\.\.\z/o) { # >= 1 args;
600 $inf = defined($argv->[$i]) and last;
601 $var =~ s/\.\.\.\z//;
602 $err = "$var not supplied";
603 } elsif ($var =~ /\A$POS_ARG\z/o) { # required arg at $i
604 $argv->[$i++] // ($err = "$var not supplied");
605 } elsif ($var =~ /\.\.\.\]\z/) { # optional args start
608 } elsif ($var =~ /\A\[-?$POS_ARG\]\z/) { # one optional arg
610 } elsif ($var =~ /\A.+?\|/) { # required FOO|--stdin
611 $inf = 1 if index($var, '...') > 0;
612 my @or = split(/\|/, $var);
615 if ($o =~ /\A--([a-z0-9\-]+)/) {
616 $ok = defined($OPT->{$1});
618 } elsif (defined($argv->[$i])) {
622 } # else continue looping
626 $err = join(', ', @or) . " or $last must be set";
628 warn "BUG: can't parse `$var' in $proto";
632 if (!$inf && scalar(@$argv) > scalar(@args)) {
633 $err //= 'too many arguments';
635 $err ? fail($self, "usage: lei $cmd $proto\nE: $err") : 1;
638 sub _tmp_cfg { # for lei -c <name>=<value> ...
640 my $cfg = _lei_cfg($self, 1);
642 my $ft = File::Temp->new(TEMPLATE => 'lei_cfg-XXXX', TMPDIR => 1);
643 my $tmp = { '-f' => $ft->filename, -tmp => $ft };
645 print $ft <<EOM or return fail($self, "$tmp->{-f}: $!");
649 $tmp = $self->{cfg} = bless { %$cfg, %$tmp }, ref($cfg);
650 for (@{$self->{opt}->{c}}) {
651 /\A([^=\.]+\.[^=]+)(?:=(.*))?\z/ or return fail($self, <<EOM);
652 `-c $_' is not of the form -c <name>=<value>'
656 _config($self, '--add', $name, $value);
657 if (defined(my $v = $tmp->{$name})) {
658 if (ref($v) eq 'ARRAY') {
661 $tmp->{$name} = [ $v, $value ];
664 $tmp->{$name} = $value;
670 my ($self, $cmd, $pfx) = @_;
674 $cb = $self->can($pfx.$ucmd) and return $cb;
676 $base =~ s/_([a-z])/\u$1/g;
677 my $pkg = "PublicInbox::Lei\u$base";
678 ($INC{"PublicInbox/Lei\u$base.pm"} // eval("require $pkg")) ?
679 $pkg->can($pfx.$ucmd) : undef;
683 my ($self, $cmd, @argv) = @_;
684 local $current_lei = $self; # for __WARN__
685 $self->{2}->autoflush(1); # keep stdout buffered until x_it|DESTROY
686 dump_and_clear_log("from previous run\n");
687 return _help($self, 'no command given') unless defined($cmd);
688 # do not support Getopt bundling for this
689 while ($cmd eq '-C' || $cmd eq '-c') {
690 my $v = shift(@argv) // return fail($self, $cmd eq '-C' ?
691 '-C DIRECTORY' : '-c <name>=<value>');
692 push @{$self->{opt}->{substr($cmd, 1, 1)}}, $v;
693 $cmd = shift(@argv) // return _help($self, 'no command given');
695 if (my $cb = lazy_cb(__PACKAGE__, $cmd, 'lei_')) {
696 optparse($self, $cmd, \@argv) or return;
697 $self->{opt}->{c} and (_tmp_cfg($self) // return);
698 if (my $chdir = $self->{opt}->{C}) {
699 for my $d (@$chdir) {
700 next if $d eq ''; # same as git(1)
701 chdir $d or return fail($self, "cd $d: $!");
703 if (delete $self->{3}) { # update cwd for rel2abs
704 opendir my $dh, '.' or
705 return fail($self, "opendir . $!");
710 } elsif (grep(/\A-/, $cmd, @argv)) { # --help or -h only
711 $GLP->getoptionsfromarray([$cmd, @argv], {}, qw(help|h C=s@))
712 or return _help($self, 'bad arguments or options');
715 fail($self, "`$cmd' is not an lei command");
720 my ($self, $creat) = @_;
721 return $self->{cfg} if $self->{cfg};
722 my $f = _config_path($self);
724 my $cur_st = @st ? pack('dd', $st[10], $st[7]) : ''; # 10:ctime, 7:size
726 if (my $cfg = $PATH2CFG{$f}) { # reuse existing object in common case
727 return ($self->{cfg} = $cfg) if $cur_st eq $cfg->{-st};
728 ($sto, $sto_dir) = @$cfg{qw(-lei_store leistore.dir)};
733 return bless {}, 'PublicInbox::Config';
735 my (undef, $cfg_dir, undef) = File::Spec->splitpath($f);
736 -d $cfg_dir or mkpath($cfg_dir) or die "mkpath($cfg_dir): $!\n";
737 open my $fh, '>>', $f or die "open($f): $!\n";
738 @st = stat($fh) or die "fstat($f): $!\n";
739 $cur_st = pack('dd', $st[10], $st[7]);
740 qerr($self, "# $f created") if $self->{cmd} ne 'config';
742 my $cfg = PublicInbox::Config->git_config_dump($f);
743 $cfg->{-st} = $cur_st;
745 if ($sto && File::Spec->canonpath($sto_dir // store_path($self))
746 eq File::Spec->canonpath($cfg->{'leistore.dir'} //
747 store_path($self))) {
748 $cfg->{-lei_store} = $sto;
750 if (scalar(keys %PATH2CFG) > 5) {
751 # FIXME: use inotify/EVFILT_VNODE to detect unlinked configs
752 for my $k (keys %PATH2CFG) {
753 delete($PATH2CFG{$k}) unless -f $k
756 $self->{cfg} = $PATH2CFG{$f} = $cfg;
759 sub _lei_store ($;$) {
760 my ($self, $creat) = @_;
761 my $cfg = _lei_cfg($self, $creat);
762 $cfg->{-lei_store} //= do {
763 require PublicInbox::LeiStore;
764 my $dir = $cfg->{'leistore.dir'} // store_path($self);
765 return unless $creat || -d $dir;
766 PublicInbox::LeiStore->new($dir, { creat => $creat });
771 my ($self, @argv) = @_;
772 my %env = (%{$self->{env}}, GIT_CONFIG => undef);
773 my $cfg = _lei_cfg($self, 1);
774 my $cmd = [ qw(git config -f), $cfg->{'-f'}, @argv ];
775 my %rdr = map { $_ => $self->{$_} } (0..2);
776 waitpid(spawn($cmd, \%env, \%rdr), 0);
780 my ($self, @argv) = @_;
781 $self->{opt}->{'config-file'} and return fail $self,
782 "config file switches not supported by `lei config'";
784 x_it($self, $?) if $?;
787 sub lei_daemon_pid { puts shift, $$ }
789 sub lei_daemon_kill {
791 my $sig = $self->{opt}->{signal} // 'TERM';
792 kill($sig, $$) or fail($self, "kill($sig, $$): $!");
795 # Shell completion helper. Used by lei-completion.bash and hopefully
796 # other shells. Try to do as much here as possible to avoid redundancy
797 # and improve maintainability.
799 my ($self, @argv) = @_; # argv = qw(lei and any other args...)
800 shift @argv; # ignore "lei", the entire command is sent
801 @argv or return puts $self, grep(!/^_/, keys %CMD), qw(--help -h -C);
802 my $cmd = shift @argv;
803 my $info = $CMD{$cmd} // do { # filter matching commands
804 @argv or puts $self, grep(/\A\Q$cmd\E/, keys %CMD);
807 my ($proto, undef, @spec) = @$info;
809 my $re = defined($cur) ? qr/\A\Q$cur\E/ : qr/./;
810 if (substr(my $_cur = $cur // '-', 0, 1) eq '-') { # --switches
811 # gross special case since the only git-config options
812 # Consider moving to a table if we need more special cases
813 # we use Getopt::Long for are the ones we reject, so these
814 # are the ones we don't reject:
815 if ($cmd eq 'config') {
816 puts $self, grep(/$re/, keys %CONFIG_KEYS);
817 @spec = qw(add z|null get get-all unset unset-all
818 replace-all get-urlmatch
819 remove-section rename-section
820 name-only list|l edit|e
821 get-color-name get-colorbool);
824 # generate short/long names from Getopt::Long specs
825 puts $self, grep(/$re/, qw(--help -h -C), map {
826 if (s/[:=].+\z//) { # req/optional args, e.g output|o=i
827 } elsif (s/\+\z//) { # verbose|v+
829 # negation: mail! => no-mail|mail
830 s/([\w\-]+)/$1|no-$1/g
833 my $x = length > 1 ? "--$_" : "-$_";
834 $x eq $_cur ? () : $x;
835 } grep(!/_/, split(/\|/, $_, -1)) # help|h
836 } grep { $OPTDESC{"$_\t$cmd"} || $OPTDESC{$_} } @spec);
837 } elsif ($cmd eq 'config' && !@argv && !$CONFIG_KEYS{$cur}) {
838 puts $self, grep(/$re/, keys %CONFIG_KEYS);
841 # switch args (e.g. lei q -f mbox<TAB>)
842 if (($argv[-1] // $cur // '') =~ /\A--?([\w\-]+)\z/) {
843 my $opt = quotemeta $1;
845 my $v = $OPTDESC{$_};
846 my @v = ref($v) ? split(/\|/, $v->[0]) : ();
847 # get rid of ALL CAPS placeholder (e.g "OUT")
848 # (TODO: completion for external paths)
849 shift(@v) if scalar(@v) && uc($v[0]) eq $v[0];
851 } grep(/\A(?:[\w-]+\|)*$opt\b.*?(?:\t$cmd)?\z/, keys %OPTDESC);
853 if (my $cb = lazy_cb($self, $cmd, '_complete_')) {
854 puts $self, $cb->($self, @argv, $cur ? ($cur) : ());
856 # TODO: URLs, pathnames, OIDs, MIDs, etc... See optparse() for
861 my ($argv, $env) = @_;
862 my $argc = scalar @$argv;
863 my $buf = 'exec '.join("\0", scalar(@$argv), @$argv);
864 while (my ($k, $v) = each %$env) { $buf .= "\0$k=$v" };
870 my $mua = $self->{opt}->{mua} // return;
871 my $mfolder = $self->{ovv}->{dst};
872 my (@cmd, $replaced);
873 if ($mua =~ /\A(?:mutt|mailx|mail|neomutt)\z/) {
875 # TODO: help wanted: other common FOSS MUAs
877 require Text::ParseWords;
878 @cmd = Text::ParseWords::shellwords($mua);
879 # mutt uses '%f' for open-hook with compressed mbox, we follow
880 @cmd = map { $_ eq '%f' ? ($replaced = $mfolder) : $_ } @cmd;
882 push @cmd, $mfolder unless defined($replaced);
883 if ($self->{sock}) { # lei(1) client process runs it
884 # restore terminal: echo $query | lei q -stdin --mua=...
886 $io->[0] = $self->{1} if $self->{opt}->{stdin} && -t $self->{1};
887 send_exec_cmd($self, $io, \@cmd, {});
888 } elsif ($self->{oneshot}) {
889 my $pid = fork // die "fork: $!";
890 if ($pid > 0) { # original process
891 if ($self->{opt}->{stdin} && -t STDOUT) {
892 open STDIN, '+<&', \*STDOUT or die "dup2: $!";
895 warn "exec @cmd: $!\n";
898 POSIX::setsid() > 0 or die "setsid: $!";
900 if ($self->{lxs} && $self->{au_done}) { # kick wait_startq
901 syswrite($self->{au_done}, 'q' x ($self->{lxs}->{jobs} // 0));
903 return unless -t $self->{2}; # XXX how to determine non-TUI MUAs?
904 $self->{opt}->{quiet} = 1;
905 delete $self->{-progress};
906 delete $self->{opt}->{verbose};
909 sub send_exec_cmd { # tell script/lei to execute a command
910 my ($self, $io, $cmd, $env) = @_;
911 my $sock = $self->{sock} // die 'lei client gone';
912 my $fds = [ map { fileno($_) } @$io ];
913 $send_cmd->($sock, $fds, exec_buf($cmd, $env), MSG_EOR);
916 sub poke_mua { # forces terminal MUAs to wake up and hopefully notice new mail
918 my $alerts = $self->{opt}->{alert} // return;
919 while (my $op = shift(@$alerts)) {
920 if ($op eq ':WINCH') {
921 # hit the process group that started the MUA
923 send($self->{sock}, '-WINCH', MSG_EOR);
924 } elsif ($self->{oneshot}) {
927 } elsif ($op eq ':bell') {
929 } elsif ($op =~ /(?<!\\),/) { # bare ',' (not ',,')
930 push @$alerts, split(/(?<!\\),/, $op);
931 } elsif ($op =~ m!\A([/a-z0-9A-Z].+)!) {
932 my $cmd = $1; # run an arbitrary command
933 require Text::ParseWords;
934 $cmd = [ Text::ParseWords::shellwords($cmd) ];
935 if (my $s = $self->{sock}) {
936 send($s, exec_buf($cmd, {}), MSG_EOR);
937 } elsif ($self->{oneshot}) {
938 $self->{"pid.$self.$$"}->{spawn($cmd)} = $cmd;
941 err($self, "W: unsupported --alert=$op"); # non-fatal
946 my %path_to_fd = ('/dev/stdin' => 0, '/dev/stdout' => 1, '/dev/stderr' => 2);
947 $path_to_fd{"/dev/fd/$_"} = $_ for (0..2);
949 # this also normalizes the path
951 my ($self, $path) = @_;
952 $path = rel2abs($self, $path);
954 $path_to_fd{$path} // (
955 ($path =~ m!\A/(?:dev|proc/self)/fd/[0-9]+\z!) ?
956 fail($self, "cannot open $path from daemon") : -1
960 # caller needs to "-t $self->{1}" to check if tty
963 my $fh = popen_rd([qw(git var GIT_PAGER)]);
964 chomp(my $pager = <$fh> // '');
965 close($fh) or warn "`git var PAGER' error: \$?=$?";
966 return if $pager eq 'cat' || $pager eq '';
967 my $new_env = { LESS => 'FRX', LV => '-c' };
968 $new_env->{MORE} = 'FRX' if $^O eq 'freebsd';
969 pipe(my ($r, $wpager)) or return warn "pipe: $!";
970 my $rdr = { 0 => $r, 1 => $self->{1}, 2 => $self->{2} };
971 my $pgr = [ undef, @$rdr{1, 2} ];
972 my $env = $self->{env};
973 if ($self->{sock}) { # lei(1) process runs it
974 delete @$new_env{keys %$env}; # only set iff unset
975 send_exec_cmd($self, [ @$rdr{0..2} ], [$pager], $new_env);
976 } elsif ($self->{oneshot}) {
978 $self->{"pid.$self.$$"}->{spawn($cmd, $new_env, $rdr)} = $cmd;
980 die 'BUG: start_pager w/o socket';
982 $self->{1} = $wpager;
983 $self->{2} = $wpager if -t $self->{2};
984 $env->{GIT_PAGER_IN_USE} = 'true'; # we may spawn git
990 my $pgr = delete($self->{pgr}) or return;
991 $self->{2} = $pgr->[2];
992 # do not restore original stdout, just close it so we error out
993 close(delete($self->{1})) if $self->{1};
996 sub accept_dispatch { # Listener {post_accept} callback
997 my ($sock) = @_; # ignore other
999 my $self = bless { sock => $sock }, __PACKAGE__;
1000 vec(my $rvec = '', fileno($sock), 1) = 1;
1001 select($rvec, undef, undef, 60) or
1002 return send($sock, 'timed out waiting to recv FDs', MSG_EOR);
1003 # (4096 * 33) >MAX_ARG_STRLEN
1004 my @fds = $recv_cmd->($sock, my $buf, 4096 * 33) or return; # EOF
1005 if (!defined($fds[0])) {
1006 warn(my $msg = "recv_cmd failed: $!");
1007 return send($sock, $msg, MSG_EOR);
1011 open($self->{$i++}, '+<&=', $fd) and next;
1012 send($sock, "open(+<&=$fd) (FD=$i): $!", MSG_EOR);
1014 $i == 4 or return send($sock, 'not enough FDs='.($i-1), MSG_EOR)
1016 # $ENV_STR = join('', map { "\0$_=$ENV{$_}" } keys %ENV);
1017 # $buf = "$argc\0".join("\0", @ARGV).$ENV_STR."\0\0";
1018 substr($buf, -2, 2, '') eq "\0\0" or # s/\0\0\z//
1019 return send($sock, 'request command truncated', MSG_EOR);
1020 my ($argc, @argv) = split(/\0/, $buf, -1);
1022 my %env = map { split(/=/, $_, 2) } splice(@argv, $argc);
1023 if (chdir($self->{3})) {
1025 $self->{env} = \%env;
1026 eval { dispatch($self, @argv) };
1027 send($sock, $@, MSG_EOR) if $@;
1029 send($sock, "fchdir: $!", MSG_EOR); # implicit close
1035 delete $self->{-progress};
1037 close(delete $self->{1}) if $self->{1}; # may reap_compress
1038 $self->close if $self->{-event_init_done}; # PublicInbox::DS::close
1041 # for long-running results
1044 local %ENV = %{$self->{env}};
1045 my $sock = $self->{sock};
1046 local $current_lei = $self;
1048 while (my @fds = $recv_cmd->($sock, my $buf, 4096)) {
1049 if (scalar(@fds) == 1 && !defined($fds[0])) {
1050 return if $! == EAGAIN;
1051 next if $! == EINTR;
1052 last if $! == ECONNRESET;
1056 open my $rfh, '+<&=', $fd;
1058 die "unrecognized client signal: $buf";
1063 eval { $self->fail($err) };
1068 sub event_step_init {
1070 return if $self->{-event_init_done}++;
1071 if (my $sock = $self->{sock}) { # using DS->EventLoop
1072 $self->SUPER::new($sock, EPOLLIN|EPOLLET);
1078 sub oldset { $oldset }
1080 sub dump_and_clear_log {
1081 if (defined($errors_log) && -s STDIN && seek(STDIN, 0, SEEK_SET)) {
1083 unshift(@pfx, "$errors_log ") if @pfx;
1084 warn @pfx, do { local $/; <STDIN> };
1085 truncate(STDIN, 0) or warn "ftruncate ($errors_log): $!";
1089 # lei(1) calls this when it can't connect
1091 my ($path, $errno, $narg) = @_;
1092 local ($errors_log, $listener);
1093 ($errors_log) = ($path =~ m!\A(.+?/)[^/]+\z!);
1094 $errors_log .= 'errors.log';
1095 my $addr = pack_sockaddr_un($path);
1096 my $lk = bless { lock_path => $errors_log }, 'PublicInbox::Lock';
1098 socket($listener, AF_UNIX, SOCK_SEQPACKET, 0) or die "socket: $!";
1099 if ($errno == ECONNREFUSED || $errno == ENOENT) {
1100 return if connect($listener, $addr); # another process won
1101 if ($errno == ECONNREFUSED && -S $path) {
1102 unlink($path) or die "unlink($path): $!";
1105 $! = $errno; # allow interpolation to stringify in die
1106 die "connect($path): $!";
1108 umask(077) // die("umask(077): $!");
1109 bind($listener, $addr) or die "bind($path): $!";
1110 listen($listener, 1024) or die "listen: $!";
1113 my @st = stat($path) or die "stat($path): $!";
1114 my $dev_ino_expect = pack('dd', $st[0], $st[1]); # dev+ino
1115 local $oldset = PublicInbox::DS::block_signals();
1117 $send_cmd = PublicInbox::Spawn->can('send_cmd4');
1118 $recv_cmd = PublicInbox::Spawn->can('recv_cmd4') // do {
1119 require PublicInbox::CmdIPC4;
1120 $send_cmd = PublicInbox::CmdIPC4->can('send_cmd4');
1121 PublicInbox::CmdIPC4->can('recv_cmd4');
1124 $recv_cmd or die <<"";
1125 (Socket::MsgHdr || Inline::C) missing/unconfigured (narg=$narg);
1127 require PublicInbox::Listener;
1128 require PublicInbox::EOFpipe;
1129 (-p STDOUT) or die "E: stdout must be a pipe\n";
1130 open(STDIN, '+>>', $errors_log) or die "open($errors_log): $!";
1131 STDIN->autoflush(1);
1132 dump_and_clear_log("from previous daemon process:\n");
1133 POSIX::setsid() > 0 or die "setsid: $!";
1134 my $pid = fork // die "fork: $!";
1136 $0 = "lei-daemon $path";
1138 $listener->blocking(0);
1140 my $pil = PublicInbox::Listener->new($listener, \&accept_dispatch);
1142 pipe(my ($eof_r, $eof_w)) or die "pipe: $!";
1143 PublicInbox::EOFpipe->new($eof_r, \&noop, undef);
1145 $exit_code //= shift;
1146 my $lis = $pil or exit($exit_code);
1147 # closing eof_w triggers \&noop wakeup
1148 $listener = $eof_w = $pil = $path = undef;
1149 $lis->close; # DS::close
1150 PublicInbox::DS->SetLoopTimeout(1000);
1154 CHLD => \&PublicInbox::DS::enqueue_reap,
1162 my $sigfd = PublicInbox::Sigfd->new($sig, SFD_NONBLOCK);
1163 local @SIG{keys %$sig} = values(%$sig) unless $sigfd;
1165 local $SIG{PIPE} = 'IGNORE';
1166 if ($sigfd) { # TODO: use inotify/kqueue to detect unlinked sockets
1168 PublicInbox::DS->SetLoopTimeout(5000);
1170 # wake up every second to accept signals if we don't
1171 # have signalfd or IO::KQueue:
1172 PublicInbox::DS::sig_setmask($oldset);
1173 PublicInbox::DS->SetLoopTimeout(1000);
1175 PublicInbox::DS->SetPostLoopCallback(sub {
1176 my ($dmap, undef) = @_;
1177 if (@st = defined($path) ? stat($path) : ()) {
1178 if ($dev_ino_expect ne pack('dd', $st[0], $st[1])) {
1179 warn "$path dev/ino changed, quitting\n";
1182 } elsif (defined($path)) { # ENOENT is common
1183 warn "stat($path): $!, quitting ...\n" if $! != ENOENT;
1187 return 1 if defined($path);
1190 for my $s (values %$dmap) {
1191 $s->can('busy') or next;
1192 if ($s->busy($now)) {
1198 $n; # true: continue, false: stop
1201 # STDIN was redirected to /dev/null above, closing STDERR and
1202 # STDOUT will cause the calling `lei' client process to finish
1203 # reading the <$daemon> pipe.
1204 local $SIG{__WARN__} = sub {
1205 $current_lei ? err($current_lei, @_) : warn(
1206 strftime('%Y-%m-%dT%H:%M:%SZ', gmtime(time))," $$ ", @_);
1208 open STDERR, '>&STDIN' or die "redirect stderr failed: $!";
1209 open STDOUT, '>&STDIN' or die "redirect stdout failed: $!";
1210 # $daemon pipe to `lei' closed, main loop begins:
1211 PublicInbox::DS->EventLoop;
1212 exit($exit_code // 0);
1215 sub busy { 1 } # prevent daemon-shutdown if client is connected
1217 # for users w/o Socket::Msghdr installed or Inline::C enabled
1219 my ($main_pkg) = @_;
1220 my $exit = $main_pkg->can('exit'); # caller may override exit()
1221 local $quit = $exit if $exit;
1223 umask(077) // die("umask(077): $!");
1224 my $self = bless { oneshot => 1, env => \%ENV }, __PACKAGE__;
1225 for (0..2) { open($self->{$_}, '+<&=', $_) or die "open fd=$_: $!" }
1226 dispatch($self, @ARGV);
1227 x_it($self, $self->{child_error}) if $self->{child_error};
1230 # ensures stdout hits the FS before sock disconnects so a client
1231 # can immediately reread it
1234 $self->{1}->autoflush(1) if $self->{1};
1237 my $oneshot_pids = delete $self->{"pid.$self.$$"} or return;
1238 waitpid($_, 0) for keys %$oneshot_pids;
1239 $? = $err if $err; # preserve ->fail or ->x_it code
1242 sub wq_done_wait { # dwaitpid callback
1243 my ($arg, $pid) = @_;
1244 my ($wq, $lei) = @$arg;
1245 my $err_type = $lei->{-err_type};
1246 $? and $lei->child_error($?,
1247 $err_type ? "$err_type errors during $lei->{cmd}" : ());
1251 sub wq_eof { # EOF callback for main daemon
1253 my $wq1 = delete $lei->{wq1} // return $lei->fail; # already failed
1254 $wq1->wq_wait_old(\&wq_done_wait, $lei);