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-rwxr-xr-ximapsync258
1 files changed, 170 insertions, 88 deletions
diff --git a/imapsync b/imapsync
index 396b355..0aa7a41 100755
--- a/imapsync
+++ b/imapsync
@@ -42,7 +42,7 @@ sub usage(;$) {
print STDERR "TODO $NAME usage\n";
exit $rv;
}
-usage(1) unless GetOptions(\%CONFIG, qw/debug help|h config=s quiet|q oneshot|1 check/);
+usage(1) unless GetOptions(\%CONFIG, qw/debug help|h config=s quiet|q oneshot|1 repair/);
usage(0) if $CONFIG{help};
@@ -568,105 +568,184 @@ my $STH_GET_INTERRUPTED_BY_IDX = $DBH->prepare(q{
});
-# Download some missing UIDs.
-sub fix_missing($$$@) {
+# Download some missing UIDs from $source; returns the thew allocated UIDs
+sub download_missing($$$@) {
my $idx = shift;
my $mailbox = shift;
- my $name = shift;
+ my $source = shift;
my @set = @_;
+ my @uids;
+
+ my $target = $source eq 'local' ? 'remote' : 'local';
- my $source = $name eq 'local' ? $lIMAP : $rIMAP;
- my $target = $name eq 'local' ? $rIMAP : $lIMAP;
+ my ($buff, $bufflen) = ([], 0);
+ undef $buff if ($target eq 'local' ? $lIMAP : $rIMAP)->incapable('MULTIAPPEND');
my $attrs = join ' ', qw/MODSEQ FLAGS INTERNALDATE ENVELOPE BODY.PEEK[]/;
- $source->fetch(compact_set(@set), "($attrs)", sub($) {
+ ($source eq 'local' ? $lIMAP : $rIMAP)->fetch(compact_set(@set), "($attrs)", sub($) {
my $mail = shift;
return unless exists $mail->{RFC822}; # not for us
- my $suid = $mail->{UID};
+ my $uid = $mail->{UID};
my $from = first { defined $_ and @$_ } @{$mail->{ENVELOPE}}[2,3,4];
$from = (defined $from and @$from) ? $from->[0]->[2].'@'.$from->[0]->[3] : '';
- print STDERR "$name($mailbox): UID $suid from <$from> ($mail->{INTERNALDATE})\n" unless $CONFIG{quiet};
-
- # don't bother checking for MULTIAPPEND, @set is probably rather small
- my ($tuid) = $target->append($mailbox, $mail);
+ print STDERR "$source($mailbox): UID $uid from <$from> ($mail->{INTERNALDATE})\n" unless $CONFIG{quiet};
- my ($lUID, $rUID) = $name eq 'local' ? ($suid, $tuid) : ($tuid, $suid);
- print STDERR "$name($mailbox): Adding mapping (lUID,rUID) = ($lUID,$rUID)\n";
- $STH_INSERT_MAPPING->execute($idx, $lUID, $rUID);
+ callback_new_message($idx, $mailbox, $source, $mail, \@uids, $buff, \$bufflen)
});
+ push @uids, callback_new_message_flush($idx, $mailbox, $source, @$buff) if defined $buff and @$buff;
+ return @uids;
+}
+
+
+# Solve a flag update conflict (by taking the union of the two flag lists).
+sub flag_conflict($$$$$) {
+ my ($mailbox, $lUID, $lFlags, $rUID, $rFlags);
+
+ my %flags = map {$_ => 1} (split(/ /, $lFlags), split(/ /, $rFlags));
+ my $flags = join ' ', sort(keys %flags);
+ warn "WARNING: Conflicting flag update in $mailbox for local UID $lUID ($lFlags) ".
+ "and remote UID $rUID ($rFlags). Setting both to the union ($flags).\n";
+
+ return $flags
+}
+
+
+# Delete a mapping ($idx, $lUID)
+sub delete_mapping($$) {
+ my ($idx, $lUID) = @_;
+ my $r = $STH_DELETE_MAPPING->execute($idx, $lUID);
+ die if $r > 1; # sanity check
+ warn "WARNING: Can't delete (idx,lUID) = ($idx,$lUID) from the database\n" if $r == 0;
}
-# Check synchronization of a mailbox between the two servers (in a very crude way)
-my @CHECKED;
-sub check($$$$$) {
- my ($idx, $lVanished, $lList, $rVanished, $rList) = @_;
+
+# Check and repair synchronization of a mailbox between the two servers
+# (in a very crude way, by downloading all existing UID with their flags)
+my @REPAIR;
+sub repair($$) {
+ my ($idx, $mailbox) = @_;
+
+ # get all existing UID with their flags
+ my ($lVanished, $lModified) = $lIMAP->pull_updates(1);
+ my ($rVanished, $rModified) = $rIMAP->pull_updates(1);
my %lVanished = map {$_ => 1} @$lVanished;
my %rVanished = map {$_ => 1} @$rVanished;
+ my (@lToRemove, %lToUpdate, @lMissing);
+ my (@rToRemove, %rToUpdate, @rMissing);
+ my @delete_mapping;
+
$STH_GET_CACHE_BY_IDX->execute($idx);
my $cache = $STH_GET_CACHE_BY_IDX->fetchrow_hashref() // die "Missing cache for index $idx";
die if defined $STH_GET_CACHE_BY_IDX->fetch(); # sanity check
- my $mailbox = $cache->{mailbox};
+
+ # process each pair ($lUID,$rUID) found in the mapping table, and
+ # compare with the result from the IMAP servers to detect anomalies
$STH_GET_MAPPING->execute($idx);
- my %missing = ( local => [], remote => [] );
while (defined (my $row = $STH_GET_MAPPING->fetch())) {
my ($lUID, $rUID) = @$row;
- if (defined $lList->{$lUID} and defined $rList->{$rUID}) {
- # both $lUID and $rUID are known
- if ($lList->{$lUID}->[0] <= $cache->{lHIGHESTMODSEQ} and
- $rList->{$rUID}->[0] <= $cache->{rHIGHESTMODSEQ}) {
- # old stuff
- if ($lList->{$lUID}->[1] ne $rList->{$rUID}->[1]) {
- warn "WARNING: Missed flag update in $mailbox for (lUID,rUID) = ($lUID,$rUID). Fixing...\n";
- # keep it in the hash references so we fix it automatically
- }
- else {
- # no conflict, remove it from the hashes
- delete $lList->{$lUID};
- delete $rList->{$rUID};
- }
+ if (defined $lModified->{$lUID} and defined $rModified->{$rUID}) {
+ # both $lUID and $rUID are known; see sync_known_messages
+ # for the sync algorithm
+ my ($lFlags, $rFlags) = ($lModified->{$lUID}->[1], $rModified->{$rUID}->[1]);
+ if ($lFlags eq $rFlags) {
+ # no conflict
+ }
+ elsif ($lModified->{$lUID}->[0] <= $cache->{lHIGHESTMODSEQ} and
+ $rModified->{$rUID}->[0] > $cache->{rHIGHESTMODSEQ}) {
+ # set $lUID to $rFlags
+ $lToUpdate{$rFlags} //= [];
+ push @{$lToUpdate{$rFlags}}, $lUID;
+ }
+ elsif ($lModified->{$lUID}->[0] > $cache->{lHIGHESTMODSEQ} and
+ $rModified->{$rUID}->[0] <= $cache->{rHIGHESTMODSEQ}) {
+ # set $rUID to $lFlags
+ $rToUpdate{$lFlags} //= [];
+ push @{$rToUpdate{$lFlags}}, $rUID;
}
else {
- # delete the old stuff
- delete $lList->{$lUID} if $lList->{$lUID}->[0] <= $cache->{lHIGHESTMODSEQ};
- delete $rList->{$rUID} if $rList->{$rUID}->[0] <= $cache->{rHIGHESTMODSEQ};
+ # conflict
+ warn "WARNING: Missed flag update in $mailbox for (lUID,rUID) = ($lUID,$rUID). Repairing.\n"
+ if $lModified->{$lUID}->[0] <= $cache->{lHIGHESTMODSEQ} and
+ $rModified->{$rUID}->[0] <= $cache->{rHIGHESTMODSEQ};
+ # set both $lUID and $rUID to the union of $lFlags and $rFlags
+ my $flags = flag_conflict($mailbox, $lUID => $lFlags, $rUID => $rFlags);
+ $lToUpdate{$flags} //= [];
+ push @{$lToUpdate{$flags}}, $lUID;
+ $rToUpdate{$flags} //= [];
+ push @{$rToUpdate{$flags}}, $rUID;
}
}
- elsif (!defined $lList->{$lUID} and !defined $rList->{$rUID}) {
+ elsif (!defined $lModified->{$lUID} and !defined $rModified->{$rUID}) {
unless ($lVanished{$lUID} and $rVanished{$rUID}) {
- # will be deleted from the database later
- warn "WARNING: Pair (lUID,rUID) = ($lUID,$rUID) vanished from $mailbox\n";
- $lVanished{$lUID} = 1;
- $rVanished{$rUID} = 1;
+ warn "WARNING: Pair (lUID,rUID) = ($lUID,$rUID) vanished from $mailbox. Repairing.\n";
+ push @delete_mapping, $lUID;
}
}
- elsif (!defined $lList->{$lUID}) {
- unless ($lVanished{$lUID}) {
- warn "local($mailbox): WARNING: No match for remote UID $rUID. Downloading again...\n";
- push @{$missing{remote}}, $rUID;
- delete $rList->{$rUID};
+ elsif (!defined $lModified->{$lUID}) {
+ push @delete_mapping, $lUID;
+ if ($lVanished{$lUID}) {
+ push @rToRemove, $rUID;
+ } else {
+ warn "local($mailbox): WARNING: UID $lUID disappeared. Downloading remote UID $rUID again.\n";
+ push @rMissing, $rUID;
}
}
- elsif (!defined $rList->{$rUID}) {
- unless ($rVanished{$rUID}) {
- warn "remote($mailbox): WARNING: No match for local UID $lUID. Downloading again...\n";
- push @{$missing{local}}, $lUID;
- delete $lList->{$lUID};
+ elsif (!defined $rModified->{$rUID}) {
+ push @delete_mapping, $lUID;
+ if ($rVanished{$rUID}) {
+ push @lToRemove, $lUID;
+ } else {
+ warn "remote($mailbox): WARNING: UID $rUID disappeared. Downloading local UID $lUID again.\n";
+ push @lMissing, $lUID;
}
}
- $lList->{$lUID} = $lList->{$lUID}->[1] if defined $lList->{$lUID};
- $rList->{$rUID} = $rList->{$rUID}->[1] if defined $rList->{$rUID};
+
+ delete $lModified->{$lUID};
+ delete $lVanished{$lUID};
+ delete $rModified->{$rUID};
+ delete $rVanished{$rUID};
+ }
+
+ # remove messages on the IMAP side; will increase HIGHESTMODSEQ
+ $lIMAP->remove_message(@lToRemove) if @lToRemove;
+ $rIMAP->remove_message(@rToRemove) if @rToRemove;
+
+ # remove entries in the table
+ delete_mapping($idx, $_) foreach @delete_mapping;
+ $DBH->commit() if @delete_mapping;
+
+ # push flag updates; will increase HIGHESTMODSEQ
+ while (my ($lFlags,$lUIDs) = each %lToUpdate) {
+ $lIMAP->push_flag_updates($lFlags, @$lUIDs);
+ }
+ while (my ($rFlags,$rUIDs) = each %rToUpdate) {
+ $rIMAP->push_flag_updates($rFlags, @$rUIDs);
+ }
+
+
+ # Process UID found in IMAP but not in the mapping table.
+ warn "remote($mailbox): WARNING: No match for vanished local UID $_. Ignoring.\n" foreach keys %lVanished;
+ warn "local($mailbox): WARNING: No match for vanished remote UID $_. Ignoring.\n" foreach keys %rVanished;
+
+ foreach my $lUID (keys %$lModified) {
+ warn "remote($mailbox): WARNING: No match for modified local UID $lUID. Downloading again.\n";
+ push @lMissing, $lUID;
+ }
+ foreach my $rUID (keys %$rModified) {
+ warn "local($mailbox): WARNING: No match for modified remote UID $rUID. Downloading again.\n";
+ push @rMissing, $rUID;
}
- # we'll complain later for modified UIDs without an entry in the database
+ # download missing UIDs; will increase UIDNEXT and HIGHESTMODSEQ
+ my @rIgnore = download_missing($idx, $mailbox, 'local', @lMissing) if @lMissing;
+ my @lIgnore = download_missing($idx, $mailbox, 'remote', @rMissing) if @rMissing;
- @$lVanished = keys %lVanished;
- @$rVanished = keys %rVanished;
- push @CHECKED, $idx;
- return %missing;
+ # download new messages; this will also update UIDNEXT and HIGHESTMODSEQ in the database
+ sync_messages($idx, $mailbox, \@lIgnore, \@rIgnore);
}
@@ -680,15 +759,13 @@ sub sync_known_messages($$) {
# loop since processing might produce VANISHED or unsollicited FETCH responses
while (1) {
- my ($lVanished, $lModified, $rVanished, $rModified, %missing);
+ my ($lVanished, $lModified, $rVanished, $rModified);
- my $check = ($CONFIG{check} and !grep { $idx == $_} @CHECKED) ? 1 : 0;
- ($lVanished, $lModified) = $lIMAP->pull_updates($check);
- ($rVanished, $rModified) = $rIMAP->pull_updates($check);
- %missing = check($idx, $lVanished, $lModified, $rVanished, $rModified) if $check;
+ ($lVanished, $lModified) = $lIMAP->pull_updates();
+ ($rVanished, $rModified) = $rIMAP->pull_updates();
# repeat until we have nothing pending
- return $update unless %$lModified or %$rModified or @$lVanished or @$rVanished or %missing;
+ return $update unless %$lModified or %$rModified or @$lVanished or @$rVanished;
$update = 1;
# process VANISHED messages
@@ -707,7 +784,7 @@ sub sync_known_messages($$) {
my ($rUID) = $STH_GET_REMOTE_UID->fetchrow_array();
die if defined $STH_GET_REMOTE_UID->fetchrow_arrayref(); # sanity check
if (!defined $rUID) {
- warn "remote($mailbox): WARNING: No match for local vanished UID $lUID. Ignoring...\n";
+ warn "remote($mailbox): WARNING: No match for vanished local UID $lUID. Ignoring.\n";
}
elsif (!exists $rVanished{$rUID}) {
push @rToRemove, $rUID;
@@ -718,7 +795,7 @@ sub sync_known_messages($$) {
my ($lUID) = $STH_GET_LOCAL_UID->fetchrow_array();
die if defined $STH_GET_LOCAL_UID->fetchrow_arrayref(); # sanity check
if (!defined $lUID) {
- warn "local($mailbox): WARNING: No match for remote vanished UID $rUID. Ignoring...\n";
+ warn "local($mailbox): WARNING: No match for vanished remote UID $rUID. Ignoring.\n";
}
elsif (!exists $lVanished{$lUID}) {
push @lToRemove, $lUID;
@@ -730,9 +807,7 @@ sub sync_known_messages($$) {
# remove existing mappings
foreach my $lUID (@$lVanished, @lToRemove) {
- my $r = $STH_DELETE_MAPPING->execute($idx, $lUID);
- die if $r > 1; # sanity check
- warn "WARNING: Can't delete (idx,lUID) = ($idx,$lUID) from the database\n" if $r == 0;
+ delete_mapping($idx, $lUID);
}
}
@@ -755,15 +830,11 @@ sub sync_known_messages($$) {
my ($rUID) = $STH_GET_REMOTE_UID->fetchrow_array();
die if defined $STH_GET_REMOTE_UID->fetchrow_arrayref(); # sanity check
if (!defined $rUID) {
- warn "remote($mailbox): WARNING: No match for local updated UID $lUID. Downloading again...\n";
- push @{$missing{local}}, $lUID;
+ warn "remote($mailbox): WARNING: No match for modified local UID $lUID. Try '--repair'.\n";
}
elsif (defined (my $rFlags = $rModified->{$rUID})) {
unless ($lFlags eq $rFlags) {
- my %flags = map {$_ => 1} (split(/ /, $lFlags), split(/ /, $rFlags));
- my $flags = join ' ', sort(keys %flags);
- warn "WARNING: Conflicting flag update in $mailbox for local UID $lUID ($lFlags) ".
- "and remote UID $rUID ($rFlags). Setting both to the union ($flags).\n";
+ my $flags = flag_conflict($mailbox, $lUID => $lFlags, $rUID => $rFlags);
$lToUpdate{$flags} //= [];
push @{$lToUpdate{$flags}}, $lUID;
$rToUpdate{$flags} //= [];
@@ -780,8 +851,7 @@ sub sync_known_messages($$) {
my ($lUID) = $STH_GET_LOCAL_UID->fetchrow_array();
die if defined $STH_GET_LOCAL_UID->fetchrow_arrayref(); # sanity check
if (!defined $lUID) {
- warn "local($mailbox): WARNING: No match for remote updated UID $rUID. Downloading again...\n";
- push @{$missing{remote}}, $rUID;
+ warn "local($mailbox): WARNING: No match for modified remote UID $rUID. Try '--repair'.\n";
}
elsif (!exists $lModified->{$lUID}) {
# conflicts are taken care of above
@@ -790,9 +860,6 @@ sub sync_known_messages($$) {
}
}
- fix_missing($idx, $mailbox, 'local', @{$missing{local}}) if @{$missing{local} // []};
- fix_missing($idx, $mailbox, 'remote', @{$missing{remote}}) if @{$missing{remote} // []};
-
while (my ($lFlags,$lUIDs) = each %lToUpdate) {
$lIMAP->push_flag_updates($lFlags, @$lUIDs);
}
@@ -952,9 +1019,7 @@ while (defined (my $row = $STH_LIST_INTERRUPTED->fetchrow_arrayref())) {
push @lToRemove, $lUID if $lList{$lUID};
push @rToRemove, $rUID if $rList{$rUID};
- my $r = $STH_DELETE_MAPPING->execute($IDX, $lUID);
- die if $r > 1; # sanity check
- warn "WARNING: Can't delete (idx,lUID) = ($IDX,$lUID) from the database\n" if $r == 0;
+ delete_mapping($IDX, $lUID);
}
$lIMAP->remove_message(@lToRemove) if @lToRemove;
@@ -981,15 +1046,32 @@ while (defined (my $row = $STH_GET_CACHE->fetchrow_hashref())) {
$lIMAP->set_cache($row->{mailbox},
UIDVALIDITY => $row->{lUIDVALIDITY},
UIDNEXT => $row->{lUIDNEXT},
- HIGHESTMODSEQ => ($CONFIG{check} ? 0 : $row->{lHIGHESTMODSEQ})
+ HIGHESTMODSEQ => $row->{lHIGHESTMODSEQ}
);
$rIMAP->set_cache($row->{mailbox},
UIDVALIDITY => $row->{rUIDVALIDITY},
UIDNEXT => $row->{rUIDNEXT},
- HIGHESTMODSEQ => ($CONFIG{check} ? 0 : $row->{rHIGHESTMODSEQ})
+ HIGHESTMODSEQ => $row->{rHIGHESTMODSEQ}
);
+ push @REPAIR, $row->{mailbox} if $CONFIG{repair} and
+ (!@ARGV or grep { $_ eq $row->{mailbox} } @ARGV);
}
+while (@REPAIR) {
+ $MAILBOX = shift @REPAIR;
+ unless (defined $MAILBOX) {
+ cleanup();
+ exit 0;
+ }
+
+ $STH_GET_INDEX->execute($MAILBOX);
+ ($IDX) = $STH_GET_INDEX->fetchrow_array();
+ die if defined $STH_GET_INDEX->fetch(); # sanity check
+
+ $lIMAP->select($MAILBOX);
+ $rIMAP->select($MAILBOX);
+ repair($IDX, $MAILBOX);
+}
while(1) {
@@ -1035,7 +1117,7 @@ while(1) {
}
}
# clean state!
- if ($CONFIG{oneshot} or $CONFIG{check}) {
+ if ($CONFIG{oneshot}) {
cleanup();
exit 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 05:31:43 +0000