user/dev discussion of public-inbox itself
 help / color / mirror / code / Atom feed
6a90e7e1e756fa02bfe68c0496edcfe336f3257d blob 13678 bytes (raw)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
 
# Copyright (C) 2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>

# parent class for LeiImport, LeiConvert, LeiIndex
package PublicInbox::LeiInput;
use strict;
use v5.10.1;
use PublicInbox::DS;
use PublicInbox::Spawn qw(which popen_rd);
use PublicInbox::InboxWritable qw(eml_from_path);

# JMAP RFC 8621 4.1.1
# https://www.iana.org/assignments/imap-jmap-keywords/imap-jmap-keywords.xhtml
our @KW = (qw(seen answered flagged draft), # widely-compatible
	qw(forwarded), # IMAP + Maildir
	qw(phishing junk notjunk)); # rarely supported

# note: RFC 8621 states "Users may add arbitrary keywords to an Email",
# but is it good idea?  Stick to the system and reserved ones, for now.
# The widely-compatible ones map to IMAP system flags, Maildir flags
# and mbox Status/X-Status headers.
my %KW = map { $_ => 1 } @KW;
my $L_MAX = 244; # Xapian term limit - length('L')

# RFC 8621, sec 2 (Mailboxes) a "label" for us is a JMAP Mailbox "name"
# "Servers MAY reject names that violate server policy"
my %ERR = (
	L => sub {
		my ($label) = @_;
		length($label) >= $L_MAX and
			return "`$label' too long (must be <= $L_MAX)";
		$label =~ m{\A[a-z0-9_](?:[a-z0-9_\-\./\@,]*[a-z0-9])?\z}i ?
			undef : "`$label' is invalid";
	},
	kw => sub {
		my ($kw) = @_;
		$KW{$kw} ? undef : <<EOM;
`$kw' is not one of: `seen', `flagged', `answered', `draft'
`junk', `notjunk', `phishing' or `forwarded'
EOM
	}
);

sub check_input_format ($;$) {
	my ($lei, $files) = @_;
	my $opt_key = 'in-format';
	my $fmt = $lei->{opt}->{$opt_key};
	if (!$fmt) {
		my $err = $files ? "regular file(s):\n@$files" : '--stdin';
		return $lei->fail("--$opt_key unset for $err");
	}
	return 1 if $fmt eq 'eml';
	require PublicInbox::MboxLock if $files;
	require PublicInbox::MboxReader;
	PublicInbox::MboxReader->reads($fmt) or
		return $lei->fail("--$opt_key=$fmt unrecognized");
	1;
}

sub input_mbox_cb { # base MboxReader callback
	my ($eml, $self) = @_;
	$eml->header_set($_) for (qw(Status X-Status));
	$self->input_eml_cb($eml);
}

# import a single file handle of $name
# Subclass must define ->input_eml_cb and ->input_mbox_cb
sub input_fh {
	my ($self, $ifmt, $fh, $name, @args) = @_;
	if ($ifmt eq 'eml') {
		my $buf = do { local $/; <$fh> } //
			return $self->{lei}->child_error(0, <<"");
error reading $name: $!

		# mutt pipes single RFC822 messages with a "From " line,
		# but no Content-Length or "From " escaping.
		# "git format-patch" also generates such files by default.
		$buf =~ s/\A[\r\n]*From [^\r\n]*\r?\n//s;

		# a user may feed just a body: git diff | lei rediff -U9
		if ($self->{-force_eml}) {
			my $eml = PublicInbox::Eml->new($buf);
			substr($buf, 0, 0) = "\n\n" if !$eml->{bdy};
		}
		$self->input_eml_cb(PublicInbox::Eml->new(\$buf), @args);
	} else {
		# prepare_inputs already validated $ifmt
		my $cb = PublicInbox::MboxReader->reads($ifmt) //
				die "BUG: bad fmt=$ifmt";
		$cb->(undef, $fh, $self->can('input_mbox_cb'), $self, @args);
	}
}

# handles mboxrd endpoints described in Documentation/design_notes.txt
sub handle_http_input ($$@) {
	my ($self, $url, @args) = @_;
	my $lei = $self->{lei} or die 'BUG: {lei} missing';
	my $curl_opt = delete $self->{"-curl-$url"} or
				die("BUG: $url curl options not prepared");
	my $uri = pop @$curl_opt;
	my $curl = PublicInbox::LeiCurl->new($lei, $self->{curl}) or return;
	push @$curl, '-s', @$curl_opt;
	my $cmd = $curl->for_uri($lei, $uri);
	$lei->qerr("# $cmd");
	my $rdr = { 2 => $lei->{2}, pgid => 0 };
	my ($fh, $pid) = popen_rd($cmd, undef, $rdr);
	grep(/\A--compressed\z/, @$curl) or
		$fh = IO::Uncompress::Gunzip->new($fh, MultiStream => 1);
	eval { $self->input_fh('mboxrd', $fh, $url, @args) };
	my $err = $@;
	waitpid($pid, 0);
	$? || $err and
		$lei->child_error($?, "@$cmd failed".$err ? " $err" : '');
}

sub input_path_url {
	my ($self, $input, @args) = @_;
	my $lei = $self->{lei};
	my $ifmt = lc($lei->{opt}->{'in-format'} // '');
	# TODO auto-detect?
	if ($input =~ m!\Aimaps?://!i) {
		$lei->{net}->imap_each($input, $self->can('input_net_cb'),
						$self, @args);
		return;
	} elsif ($input =~ m!\A(?:nntps?|s?news)://!i) {
		$lei->{net}->nntp_each($input, $self->can('input_net_cb'),
						$self, @args);
		return;
	} elsif ($input =~ m!\Ahttps?://!i) {
		handle_http_input($self, $input, @args);
		return;
	}

	# local-only below
	my $ifmt_pfx = '';
	if ($input =~ s!\A([a-z0-9]+):!!i) {
		$ifmt_pfx = "$1:";
		$ifmt = lc($1);
	} elsif ($input =~ /\.(?:patch|eml)\z/i) {
		$ifmt = 'eml';
	} elsif (-f $input && $input =~ m{\A(?:.+)/(?:new|cur)/([^/]+)\z}) {
		my $bn = $1;
		my $fl = PublicInbox::MdirReader::maildir_basename_flags($bn);
		return if index($fl, 'T') >= 0;
		return $self->pmdir_cb($input, $fl) if $self->can('pmdir_cb');
		my $eml = eml_from_path($input) or return
			$lei->qerr("# $input not readable");
		my $kw = PublicInbox::MdirReader::flags2kw($fl);
		$self->can('input_maildir_cb')->($input, $kw, $eml, $self);
		return;
	}
	my $devfd = $lei->path_to_fd($input) // return;
	if ($devfd >= 0) {
		$self->input_fh($ifmt, $lei->{$devfd}, $input, @args);
	} elsif (-f $input && $ifmt eq 'eml') {
		open my $fh, '<', $input or
					return $lei->fail("open($input): $!");
		$self->input_fh($ifmt, $fh, $input, @args);
	} elsif (-f _) {
		my $m = $lei->{opt}->{'lock'} //
			PublicInbox::MboxLock->defaults;
		my $mbl = PublicInbox::MboxLock->acq($input, 0, $m);
		my $zsfx = PublicInbox::MboxReader::zsfx($input);
		if ($zsfx) {
			my $in = delete $mbl->{fh};
			$mbl->{fh} =
			     PublicInbox::MboxReader::zsfxcat($in, $zsfx, $lei);
		}
		local $PublicInbox::DS::in_loop = 0 if $zsfx; # dwaitpid
		$self->input_fh($ifmt, $mbl->{fh}, $input, @args);
	} elsif (-d _ && (-d "$input/cur" || -d "$input/new")) {
		return $lei->fail(<<EOM) if $ifmt && $ifmt ne 'maildir';
$input appears to be a maildir, not $ifmt
EOM
		my $mdr = PublicInbox::MdirReader->new;
		if (my $pmd = $self->{pmd}) {
			$mdr->maildir_each_file($input,
						$pmd->can('each_mdir_fn'),
						$pmd, @args);
		} else {
			$mdr->maildir_each_eml($input,
						$self->can('input_maildir_cb'),
						$self, @args);
		}
	} elsif ($self->{missing_ok} && !-e $input) { # don't ->fail
		$self->folder_missing("$ifmt:$input");
	} else {
		$lei->fail("$ifmt_pfx$input unsupported (TODO)");
	}
}

# subclasses should overrride this (see LeiRefreshMailSync)
sub folder_missing { die "BUG: ->folder_missing undefined for $_[0]" }

sub bad_http ($$;$) {
	my ($lei, $url, $alt) = @_;
	my $x = $alt ? "did you mean <$alt>?" : 'download and import manually';
	$lei->fail("E: <$url> not recognized, $x");
}

sub prepare_http_input ($$$) {
	my ($self, $lei, $url) = @_;
	require URI;
	require PublicInbox::MboxReader;
	require PublicInbox::LeiCurl;
	require IO::Uncompress::Gunzip;
	$self->{curl} //= which('curl') or
				return $lei->fail("curl missing for <$url>");
	my $uri = URI->new($url);
	my $path = $uri->path;
	my %qf = $uri->query_form;
	my @curl_opt;
	if ($path =~ m!/(?:t\.mbox\.gz|all\.mbox\.gz)\z!) {
		# OK
	} elsif ($path =~ m!/raw\z!) {
		push @curl_opt, '--compressed';
	# convert search query to mboxrd request since they require POST
	# this is only intended for PublicInbox::WWW, and will false-positive
	# on many other search engines... oh well
	} elsif (defined $qf{'q'}) {
		$qf{x} = 'm';
		$uri->query_form(\%qf);
		push @curl_opt, '-d', '';
		$$uri ne $url and $lei->qerr(<<"");
# <$url> rewritten to <$$uri> with HTTP POST

	# try to provide hints for /$INBOX/$MSGID/T/ and /$INBOX/
	} elsif ($path =~ s!/[tT]/\z!/t.mbox.gz! ||
			$path =~ s!/t\.atom\z!/t.mbox.gz! ||
			$path =~ s!/([^/]+\@[^/]+)/\z!/$1/raw!) {
		$uri->path($path);
		return bad_http($lei, $url, $$uri);
	} else {
		return bad_http($lei, $url);
	}
	$self->{"-curl-$url"} = [ @curl_opt, $uri ]; # for handle_http_input
}

sub prepare_inputs { # returns undef on error
	my ($self, $lei, $inputs) = @_;
	my $in_fmt = $lei->{opt}->{'in-format'};
	my $sync = $lei->{opt}->{'mail-sync'} ? {} : undef; # using LeiMailSync
	my $may_sync = $sync || $self->{-mail_sync};
	if ($lei->{opt}->{stdin}) {
		@$inputs and return
			$lei->fail("--stdin and @$inputs do not mix");
		check_input_format($lei) or return;
		push @$inputs, '/dev/stdin';
		push @{$sync->{no}}, '/dev/stdin' if $sync;
	}
	my $net = $lei->{net}; # NetWriter may be created by l2m
	my (@f, @md);
	# e.g. Maildir:/home/user/Mail/ or imaps://example.com/INBOX
	for my $input (@$inputs) {
		my $input_path = $input;
		if ($input =~ m!\A(?:imaps?|nntps?|s?news)://!i) {
			require PublicInbox::NetReader;
			$net //= PublicInbox::NetReader->new;
			$net->add_url($input, $self->{-ls_ok});
			push @{$sync->{ok}}, $input if $sync;
		} elsif ($input_path =~ m!\Ahttps?://!i) { # mboxrd.gz
			# TODO: how would we detect r/w JMAP?
			push @{$sync->{no}}, $input if $sync;
			prepare_http_input($self, $lei, $input_path) or return;
		} elsif ($input_path =~ s/\A([a-z0-9]+)://is) {
			my $ifmt = lc $1;
			if (($in_fmt // $ifmt) ne $ifmt) {
				return $lei->fail(<<"");
--in-format=$in_fmt and `$ifmt:' conflict

			}
			if ($ifmt =~ /\A(?:maildir|mh)\z/i) {
				push @{$sync->{ok}}, $input if $sync;
			} else {
				push @{$sync->{no}}, $input if $sync;
			}
			my $devfd = $lei->path_to_fd($input_path) // return;
			if ($devfd >= 0 || (-f $input_path || -p _)) {
				require PublicInbox::MboxLock;
				require PublicInbox::MboxReader;
				PublicInbox::MboxReader->reads($ifmt) or return
					$lei->fail("$ifmt not supported");
			} elsif (-d $input_path) {
				$ifmt eq 'maildir' or return
					$lei->fail("$ifmt not supported");
				$may_sync and $input = 'maildir:'.
						$lei->abs_path($input_path);
				push @md, $input;
			} elsif ($self->{missing_ok} && !-e _) {
				# for "lei rm-watch" on missing Maildir
				$may_sync and $input = 'maildir:'.
						$lei->abs_path($input_path);
			} else {
				my $m = "Unable to handle $input";
				$input =~ /\A(?:L|kw):/ and
					$m .= ", did you mean +$input?";
				return $lei->fail($m);
			}
		} elsif ($input =~ /\.(?:eml|patch)\z/i && -f $input) {
			lc($in_fmt//'eml') eq 'eml' or return $lei->fail(<<"");
$input is `eml', not --in-format=$in_fmt

			push @{$sync->{no}}, $input if $sync;
		} elsif (-f $input && $input =~ m{\A(.+)/(new|cur)/([^/]+)\z}) {
			# single file in a Maildir
			my ($mdir, $nc, $bn) = ($1, $2, $3);
			my $other = $mdir . ($nc eq 'new' ? '/cur' : '/new');
			return $lei->fail(<<EOM) if !-d $other;
No `$other' directory for `$input'
EOM
			lc($in_fmt//'eml') eq 'eml' or return $lei->fail(<<"");
$input is `eml', not --in-format=$in_fmt

			if ($sync) {
				$input = $lei->abs_path($mdir) . "/$nc/$bn";
				push @{$sync->{ok}}, $input if $sync;
			}
			require PublicInbox::MdirReader;
		} else {
			my $devfd = $lei->path_to_fd($input) // return;
			if ($devfd >= 0 || -f $input || -p _) {
				push @{$sync->{no}}, $input if $sync;
				push @f, $input;
			} elsif (-d "$input/new" && -d "$input/cur") {
				if ($may_sync) {
					$input = 'maildir:'.
						$lei->abs_path($input);
					push @{$sync->{ok}}, $input if $sync;
				}
				push @md, $input;
			} elsif ($self->{missing_ok} && !-e $input) {
				# for lei rm-watch
				$may_sync and $input = 'maildir:'.
						$lei->abs_path($input);
			} else {
				return $lei->fail("Unable to handle $input")
			}
		}
	}
	if (@f) { check_input_format($lei, \@f) or return }
	if ($sync && $sync->{no}) {
		return $lei->fail(<<"") if !$sync->{ok};
--mail-sync specified but no inputs support it

		# non-fatal if some inputs support support sync
		warn("# --mail-sync will only be used for @{$sync->{ok}}\n");
		warn("# --mail-sync is not supported for: @{$sync->{no}}\n");
	}
	if ($net) {
		$net->{-can_die} = 1;
		if (my $err = $net->errors($lei)) {
			return $lei->fail($err);
		}
		$net->{quiet} = $lei->{opt}->{quiet};
		require PublicInbox::LeiAuth;
		$lei->{auth} //= PublicInbox::LeiAuth->new;
		$lei->{net} //= $net;
	}
	if (scalar(@md)) {
		require PublicInbox::MdirReader;
		if ($self->can('pmdir_cb')) {
			require PublicInbox::LeiPmdir;
			$self->{pmd} = PublicInbox::LeiPmdir->new($lei, $self);
		}

		# start watching Maildirs ASAP
		if ($may_sync && $lei->{sto}) {
			grep(!m!\Amaildir:/!i, @md) and die "BUG: @md (no pfx)";
			$lei->lms(1)->lms_write_prepare->add_folders(@md);
			$lei->refresh_watches;
		}
	}
	$self->{inputs} = $inputs;
}

sub process_inputs {
	my ($self) = @_;
	my $err;
	for my $input (@{$self->{inputs}}) {
		eval { $self->input_path_url($input) };
		next unless $@;
		$err = "$input: $@";
		last;
	}
	# always commit first, even on error partial work is acceptable for
	# lei <import|tag|convert>
	my $wait = $self->{lei}->{sto}->wq_do('done') if $self->{lei}->{sto};
	$self->{lei}->fail($err) if $err;
}

sub input_only_atfork_child {
	my ($self) = @_;
	my $lei = $self->{lei};
	$lei->_lei_atfork_child;
	PublicInbox::IPC::ipc_atfork_child($self);
	$lei->{auth}->do_auth_atfork($self) if $lei->{auth};
	undef;
}

# alias this as "net_merge_all_done" to use as an LeiAuth callback
sub input_only_net_merge_all_done {
	my ($self) = @_;
	$self->wq_io_do('process_inputs');
	$self->wq_close(1);
}

# like Getopt::Long, but for +kw:FOO and -kw:FOO to prepare
# for update_xvmd -> update_vmd
# returns something like { "+L" => [ @Labels ], ... }
sub vmd_mod_extract {
	my $argv = $_[-1];
	my $vmd_mod = {};
	my @new_argv;
	for my $x (@$argv) {
		if ($x =~ /\A(\+|\-)(kw|L):(.+)\z/) {
			my ($op, $pfx, $val) = ($1, $2, $3);
			if (my $err = $ERR{$pfx}->($val)) {
				push @{$vmd_mod->{err}}, $err;
			} else { # set "+kw", "+L", "-L", "-kw"
				push @{$vmd_mod->{$op.$pfx}}, $val;
			}
		} else {
			push @new_argv, $x;
		}
	}
	@$argv = @new_argv;
	$vmd_mod;
}

1;
debug log:

solving 6a90e7e1e756 ...
found 6a90e7e1e756 in https://80x24.org/public-inbox.git

Code repositories for project(s) associated with this inbox:

	https://80x24.org/public-inbox.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).