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Delete correctly checks status.

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Chris 2012-08-15 14:51:27 +01:00
parent 1dd9844a22
commit 051d39cdab
1 changed files with 76 additions and 33 deletions
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105
Message/Queue.pm
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@ -168,9 +168,9 @@ sub delete_message {
$self -> clear_error();
if($args -> {"id"}) {
return $self -> _delete_by_field("id", $args -> {"id"}, $args -> {"userid"}, $now);
return $self -> _delete_by_id($args -> {"id"}, $args -> {"userid"}, $now);
} elsif($args -> {"ident"}) {
return $self -> _delete_by_field("message_ident", $args -> {"ident"}, $args -> {"userid"}, $now);
return $self -> _delete_by_ident($args -> {"ident"}, $args -> {"userid"}, $now);
}
return $self -> self_error("No id or ident passed to delete_message()");
@ -481,64 +481,107 @@ sub _add_recipient {
}
## @method private $ _delete_by_field($field, $value, $userid, $deleted)
# Attempt to delete messages where the specified field contains the value given.
# Note that this *does not* remove the message from the table, it simply marks
# it as deleted so that get_message() will not normally return it. This will not
# delete messages that have been sent or viewed.
## @method private $ _delete_by_ident($ident, $userid, $deleted);
# Delete messages with the specified message ident. This may delete zero or more
# messages, and will not delete messages that have been sent or viewed.
#
# @param field The database table field to search for messages on.
# @param value When a given message has this value in the specified field, it is
# marked as deleted (aleady deleted messages are not changed)
# @param ident Messages with this message ident will be deleted.
# @param userid The user performing the delete. May be undef.
# @param deleted The timestamp to place in the deleted field.
# @return The number of rows deleted.
sub _delete_by_field {
# @return The number of messages deleted (which may be zero) on success, undef
# on error.
sub _delete_by_ident {
my $self = shift;
my $field = shift;
my $value = shift;
my $ident = shift;
my $userid = shift;
my $deleted = shift;
$self -> clear_error();
# Force valid field
$field = "id" unless($field && ($field eq "id" || $field eq "message_ident"));
$self -> {"logger"} -> log("messaging", $userid || 0, undef, "Attempting delete of messages with ident $ident");
$self -> {"logger"} -> log("messaging", $userid || 0, undef, "Attempting delete of message(s) with $field = '$value'");
my $messh = $self -> {"dbh"} -> prepare("SELECT id
FROM `".$self -> {"settings"} -> {"database"} -> {"message_queue"}."`
WHERE message_ident = ?");
$messh -> execute($ident)
or return $self -> self_error("Unable to perform message ident lookup: ". $self -> {"dbh"} -> errstr);
my $deleted = 0;
while(my $msgid = $messh -> fetchrow_arrayref()) {
my $result = $self -> _delete_by_id($msgid -> [0], $userid, $deleted);
return undef if(!defined($result));
$deleted += $result;
}
return $deleted;
}
## @method private $ _delete_by_id($messageid, $userid, $deleted)
# Attempt to delete the message with the specified message id.
# Note that this *does not* remove the message from the table, it simply marks
# it as deleted so that get_message() will not normally return it. This will not
# delete messages that have been sent or viewed.
#
# @param messageid The ID of the message to delete.
# @param userid The user performing the delete. May be undef.
# @param deleted The timestamp to place in the deleted field.
# @return 1 of the message is deleted, 0 if the message can not be deleted
# because it has been sent or viewed, undef on error.
sub _delete_by_id {
my $self = shift;
my $messageid = shift;
my $userid = shift;
my $deleted = shift;
$self -> clear_error();
$self -> {"logger"} -> log("messaging", $userid || 0, undef, "Attempting delete of message $messageid");
# Check that the message has no views
my $viewh = $self -> {"dbh"} -> prepare("SELECT COUNT(*)
FROM `".$self -> {"settings"} -> {"database"} -> {"message_queue"}."` AS q,
`".$self -> {"settings"} -> {"database"} -> {"message_recipients"}."` AS r
WHERE q.$field = ?
AND r.message_id = q.id
AND r.viewed IS NOT NULL");
$viewh -> execute($value)
or return $self -> self_error("Unable to perform message view check: ". $self -> {"dbh"} -> errstr);
FROM `".$self -> {"settings"} -> {"database"} -> {"message_recipients"}."`
WHERE message_id = ?
AND viewed IS NOT NULL");
$viewh -> execute($messageid)
or return $self -> self_error("Unable to perform message $messageid view check: ". $self -> {"dbh"} -> errstr);
my $views = $viewh -> fetchrow_arrayref()
or return $self -> self_error("Unable to obtain message view count. This should not happen!");
or return $self -> self_error("Unable to obtain message $messageid view count. This should not happen!");
# If the view count is non-zero, the message or message group can not be deleted.
# If the view count is non-zero, the message can not be deleted.
return 0 if($views -> [0]);
$self -> {"logger"} -> log("messaging", $userid || 0, undef, "Delete of message(s) with $field = '$value' passed view check");
# Check that the message has not been sent
my $senth = $self -> {"dbh"} -> prepare("SELECT COUNT(*)
FROM `".$self -> {"settings"} -> {"database"} -> {"message_status"}."`
WHERE message_id = ?
AND status = 'sent'");
$senth -> execute($messageid)
or return $self -> self_error("Unable to perform message $messageid sent check: ". $self -> {"dbh"} -> errstr);
my $sent = $senth -> fetchrow_arrayref()
or return $self -> self_error("Unable to obtain message $messageid sent count. This should not happen!");
# If the sent count is non-zero, the message can not be deleted.
return 0 if($sent -> [0]);
$self -> {"logger"} -> log("messaging", $userid || 0, undef, "Delete of message $messageid passed view and sent check");
# Otherwise, nobody is marked as having seen the message, if it hasn't been sent, mark it as deleted
my $nukeh = $self -> {"dbh"} -> prepare("UPDATE `".$self -> {"settings"} -> {"database"} -> {"message_queue"}."`
SET deleted = ?, deleted_id = ?
WHERE $field = ?
AND status != 'sent'
AND deleted IS NULL");
my $result = $nukeh -> execute($deleted, $userid, $value);
return $self -> self_error("Unable to perform message delete: ". $self -> {"dbh"} -> errstr) if(!$result);
$self -> {"logger"} -> log("messaging", $userid || 0, undef, "Delete of message $messageid row updated count: $result");
# Result should contain the number of rows updated.
return 0 if($result eq "0E0"); # need a special case for the zero rows, just in case...
$self -> {"logger"} -> log("messaging", $userid || 0, undef, "Delete of message(s) with $field = '$value' marked $result messages");
return $result;
}