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package ftp; # $Id$
use Net::FTP;
use network;
use log;
my %hosts;
1;
sub fromEnv() {
#- now URLPREFIX is generated from what is given by mdk-stage1 which is only this 4 variables.
$ENV{URLPREFIX} = "ftp://" . ($ENV{LOGIN} && ("$ENV{LOGIN}" . ($ENV{PASSWORD} && ":$ENV{PASSWORD}") . '@')) .
"$ENV{HOST}/$ENV{PREFIX}";
@ENV{qw(HOST PREFIX LOGIN PASSWORD)};
}
sub new {
my ($host, $prefix, $login, $password) = @_;
my @l = do { if ($hosts{"$host$prefix"}) {
@{$hosts{"$host$prefix"}};
} else {
my %options = (Passive => 1, Timeout => 60, Port => 21);
$options{Firewall} = $ENV{PROXY} if $ENV{PROXY};
$options{Port} = $ENV{PROXYPORT} if $ENV{PROXYPORT};
unless ($login) {
$login = 'anonymous';
$password = '-drakx@';
}
my $ftp;
foreach (1..10) {
$ftp = Net::FTP->new(network::resolv($host), %options) or die;
$ftp && $ftp->login($login, $password) and last;
log::l("ftp login failed, sleeping before trying again");
sleep 5 * $_;
}
$ftp or die "unable to open ftp connection to $host";
$ftp->binary;
$ftp->cwd($prefix);
my @l = ($ftp, \ (my $retr = undef));
$hosts{"$host$prefix"} = \@l;
@l;
} };
wantarray ? @l : $l[0];
}
sub getFile {
my ($f, @para) = @_;
$f eq 'XXX' and rewindGetFile(), return; #- special case to force closing connection.
foreach (1..3) {
my ($ftp, $retr) = new(@para ? @para : fromEnv);
eval { $$retr->close if $$retr };
$@ and rewindGetFile(); #- in case Timeout got us on "->close"
$$retr = $ftp->retr($f) and return $$retr;
$ftp->code == 550 and log::l("FTP: 550 file unavailable"), return;
rewindGetFile();
log::l("ftp get failed, sleeping before trying again");
sleep 1;
}
}
#-sub closeFiles() {
#- #- close any existing connections
#- foreach (values %hosts) {
#- my $retr = $_->[1] if ref $_;
#- $$retr->close if $$retr;
#- undef $$retr;
#- }
#-}
sub rewindGetFile() {
#- close any existing connection.
foreach (values %hosts) {
my ($ftp, $retr) = @{$_ || []};
#- don't let Timeout kill us!
eval { $$retr->close } if $$retr;
eval { $ftp->close } if $ftp;
}
#- make sure to reconnect to server.
%hosts = ();
}
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