1 # Copyright (C) 2021 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # for maintaining synchronization between lei/store <=> Maildir|MH|IMAP|JMAP
5 package PublicInbox::LeiMailSync;
12 my $f = $self->{filename};
15 require PublicInbox::Spawn;
16 open my $fh, '+>>', $f or die "failed to open $f: $!";
17 PublicInbox::Spawn::nodatacow_fd(fileno($fh));
20 my $dbh = DBI->connect("dbi:SQLite:dbname=$f",'','', {
25 sqlite_use_immediate_transaction => 1,
27 # no sqlite_unicode, here, all strings are binary
28 create_tables($dbh) if $rw;
29 $dbh->do('PRAGMA journal_mode = WAL') if $creat;
30 $dbh->do('PRAGMA case_sensitive_like = ON');
36 bless { filename => $f, fmap => {} }, $cls;
39 sub lms_commit { delete($_[0]->{dbh})->commit }
41 sub lms_begin { ($_[0]->{dbh} //= dbh_new($_[0], 1))->begin_work };
47 CREATE TABLE IF NOT EXISTS folders (
48 fid INTEGER PRIMARY KEY,
49 loc VARBINARY NOT NULL, /* URL;UIDVALIDITY=$N or $TYPE:/pathname */
54 CREATE TABLE IF NOT EXISTS blob2num (
55 oidbin VARBINARY NOT NULL,
56 fid INTEGER NOT NULL, /* folder ID */
57 uid INTEGER NOT NULL, /* NNTP article number, IMAP UID, MH number */
58 UNIQUE (oidbin, fid, uid)
62 CREATE TABLE IF NOT EXISTS blob2name (
63 oidbin VARBINARY NOT NULL,
64 fid INTEGER NOT NULL, /* folder ID */
65 name VARBINARY NOT NULL, /* Maildir basename, JMAP blobId */
66 UNIQUE (oidbin, fid, name)
72 my ($self, $folder, $rw) = @_;
73 my $dbh = $self->{dbh};
74 my ($row) = $dbh->selectrow_array(<<'', undef, $folder);
75 SELECT fid FROM folders WHERE loc = ? LIMIT 1
77 return $row if defined $row;
80 ($row) = $dbh->selectrow_array('SELECT MAX(fid) FROM folders');
82 my $fid = ($row // 0) + 1;
83 # in case we're reusing, clobber existing stale refs:
84 $dbh->do('DELETE FROM blob2name WHERE fid = ?', undef, $fid);
85 $dbh->do('DELETE FROM blob2num WHERE fid = ?', undef, $fid);
87 my $sth = $dbh->prepare('INSERT INTO folders (fid, loc) VALUES (?, ?)');
88 $sth->execute($fid, $folder);
94 my ($self, $oidhex, $folder, $id) = @_;
95 my $fid = $self->{fmap}->{$folder} //= _fid_for($self, $folder, 1);
97 if (ref($id)) { # scalar name
99 $sth = $self->{dbh}->prepare_cached(<<'');
100 INSERT OR IGNORE INTO blob2name (oidbin, fid, name) VALUES (?, ?, ?)
102 } else { # numeric ID (IMAP UID, MH number)
103 $sth = $self->{dbh}->prepare_cached(<<'');
104 INSERT OR IGNORE INTO blob2num (oidbin, fid, uid) VALUES (?, ?, ?)
107 $sth->execute(pack('H*', $oidhex), $fid, $id);
111 my ($self, $folder, $id) = @_;
112 my $fid = $self->{fmap}->{$folder} //= _fid_for($self, $folder, 1);
114 if (ref($id)) { # scalar name
116 $sth = $self->{dbh}->prepare_cached(<<'');
117 DELETE FROM blob2name WHERE fid = ? AND name = ?
120 $sth = $self->{dbh}->prepare_cached(<<'');
121 DELETE FROM blob2num WHERE fid = ? AND uid = ?
124 $sth->execute($fid, $id);
127 # read-only, iterates every oidbin + UID or name for a given folder
129 my ($self, $folder, $cb, @args) = @_;
130 my $dbh = $self->{dbh} //= dbh_new($self);
132 $fid = $self->{fmap}->{$folder} //= _fid_for($self, $folder) // return;
133 $sth = $dbh->prepare('SELECT oidbin,uid FROM blob2num WHERE fid = ?');
135 while (my ($oidbin, $id) = $sth->fetchrow_array) {
136 $cb->($oidbin, $id, @args);
138 $sth = $dbh->prepare('SELECT oidbin,name FROM blob2name WHERE fid = ?');
140 while (my ($oidbin, $id) = $sth->fetchrow_array) {
141 $cb->($oidbin, \$id, @args);
146 my ($self, $folder) = @_;
147 my $dbh = $self->{dbh} //= dbh_new($self);
150 $fid = $self->{fmap}->{$folder} //= _fid_for($self, $folder) // return;
151 my ($row) = $dbh->selectrow_array(<<"", undef, $fid);
152 SELECT COUNT(name) FROM blob2name WHERE fid = ?
154 $ret->{'name.count'} = $row if $row;
155 for my $op (qw(count min max)) {
156 ($row) = $dbh->selectrow_array(<<"", undef, $fid);
157 SELECT $op(uid) FROM blob2num WHERE fid = ?
160 $ret->{"uid.$op"} = $row;
165 # returns a { location => [ list-of-ids-or-names ] } mapping
167 my ($self, $oidhex) = @_;
168 my ($fid, $sth, $id, %fid2id);
169 my $dbh = $self->{dbh} //= dbh_new($self);
170 $sth = $dbh->prepare('SELECT fid,uid FROM blob2num WHERE oidbin = ?');
171 $sth->execute(pack('H*', $oidhex));
172 while (my ($fid, $uid) = $sth->fetchrow_array) {
173 push @{$fid2id{$fid}}, $uid;
175 $sth = $dbh->prepare('SELECT fid,name FROM blob2name WHERE oidbin = ?');
176 $sth->execute(pack('H*', $oidhex));
177 while (my ($fid, $name) = $sth->fetchrow_array) {
178 push @{$fid2id{$fid}}, $name;
180 $sth = $dbh->prepare('SELECT loc FROM folders WHERE fid = ? LIMIT 1');
182 while (my ($fid, $ids) = each %fid2id) {
184 my ($loc) = $sth->fetchrow_array;
185 unless (defined $loc) {
186 warn "E: fid=$fid for $oidhex unknown:\n", map {
187 'E: '.(ref() ? $$_ : "#$_")."\n";
193 scalar(keys %$ret) ? $ret : undef;
196 # returns a list of folders used for completion
198 my ($self, $pfx) = @_;
199 my $dbh = $self->{dbh} //= dbh_new($self);
200 my $sql = 'SELECT loc FROM folders';
203 $sql .= ' WHERE loc LIKE ? ESCAPE ?';
205 $pfx[0] =~ s/([%_\\])/\\$1/g; # glob chars
208 map { $_->[0] } @{$dbh->selectall_arrayref($sql, undef, @pfx)};