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# -*- Mode: cperl; coding: utf-8; cperl-indent-level: 4 -*-
# vim: ts=4 sts=4 sw=4:
package CPAN::FTP;
use strict;
use Errno ();
use Fcntl qw(:flock);
use File::Basename qw(dirname);
use File::Path qw(mkpath);
use CPAN::FTP::netrc;
use vars qw($connect_to_internet_ok $Ua $Thesite $ThesiteURL $Themethod);
@CPAN::FTP::ISA = qw(CPAN::Debug);
use vars qw(
$VERSION
);
$VERSION = "5.5016";
sub _plus_append_open {
my($fh, $file) = @_;
my $parent_dir = dirname $file;
mkpath $parent_dir;
my($cnt);
until (open $fh, "+>>$file") {
next if exists &Errno::EAGAIN && $! == &Errno::EAGAIN; # don't increment on EAGAIN
$CPAN::Frontend->mydie("Could not open '$file' after 10000 tries: $!") if ++$cnt > 100000;
sleep 0.0001;
mkpath $parent_dir;
}
}
#-> sub CPAN::FTP::ftp_statistics
# if they want to rewrite, they need to pass in a filehandle
sub _ftp_statistics {
my($self,$fh) = @_;
my $ftpstats_size = $CPAN::Config->{ftpstats_size};
return if defined $ftpstats_size && $ftpstats_size <= 0;
my $locktype = $fh ? LOCK_EX : LOCK_SH;
# XXX On Windows flock() implements mandatory locking, so we can
# XXX only use shared locking to still allow _yaml_loadfile() to
# XXX read from the file using a different filehandle.
$locktype = LOCK_SH if $^O eq "MSWin32";
$fh ||= FileHandle->new;
my $file = File::Spec->catfile($CPAN::Config->{cpan_home},"FTPstats.yml");
_plus_append_open($fh,$file);
my $sleep = 1;
my $waitstart;
while (!CPAN::_flock($fh, $locktype|LOCK_NB)) {
$waitstart ||= localtime();
if ($sleep>3) {
my $now = localtime();
$CPAN::Frontend->mywarn("$now: waiting for read lock on '$file' (since $waitstart)\n");
}
sleep($sleep); # this sleep must not be overridden;
# Frontend->mysleep with AUTOMATED_TESTING has
# provoked complete lock contention on my NFS
if ($sleep <= 6) {
$sleep+=0.5;
} else {
# retry to get a fresh handle. If it is NFS and the handle is stale, we will never get an flock
_plus_append_open($fh, $file);
}
}
my $stats = eval { CPAN->_yaml_loadfile($file, {loadblessed => 1}); };
if ($@) {
if (ref $@) {
if (ref $@ eq "CPAN::Exception::yaml_not_installed") {
chomp $@;
$CPAN::Frontend->myprintonce("Warning (usually harmless): $@\n");
return;
} elsif (ref $@ eq "CPAN::Exception::yaml_process_error") {
my $time = time;
my $to = "$file.$time";
$CPAN::Frontend->mywarn("Error reading '$file': $@
Trying to stash it away as '$to' to prevent further interruptions.
You may want to remove that file later.\n");
# may fail because somebody else has moved it away in the meantime:
rename $file, $to or $CPAN::Frontend->mywarn("Could not rename '$file' to '$to': $!\n");
return;
}
} else {
$CPAN::Frontend->mydie($@);
}
}
CPAN::_flock($fh, LOCK_UN);
return $stats->[0];
}
#-> sub CPAN::FTP::_mytime
sub _mytime () {
if (CPAN->has_inst("Time::HiRes")) {
return Time::HiRes::time();
} else {
return time;
}
}
#-> sub CPAN::FTP::_new_stats
sub _new_stats {
my($self,$file) = @_;
my $ret = {
file => $file,
attempts => [],
start => _mytime,
};
$ret;
}
#-> sub CPAN::FTP::_add_to_statistics
sub _add_to_statistics {
my($self,$stats) = @_;
my $yaml_module = CPAN::_yaml_module();
$self->debug("yaml_module[$yaml_module]") if $CPAN::DEBUG;
if ($CPAN::META->has_inst($yaml_module)) {
$stats->{thesiteurl} = $ThesiteURL;
$stats->{end} = CPAN::FTP::_mytime();
my $fh = FileHandle->new;
my $time = time;
my $sdebug = 0;
my @debug;
@debug = $time if $sdebug;
my $fullstats = $self->_ftp_statistics($fh);
close $fh if $fh && defined(fileno($fh));
$fullstats->{history} ||= [];
push @debug, scalar @{$fullstats->{history}} if $sdebug;
push @debug, time if $sdebug;
push @{$fullstats->{history}}, $stats;
# YAML.pm 0.62 is unacceptably slow with 999;
# YAML::Syck 0.82 has no noticable performance problem with 999;
my $ftpstats_size = $CPAN::Config->{ftpstats_size};
$ftpstats_size = 99 unless defined $ftpstats_size;
my $ftpstats_period = $CPAN::Config->{ftpstats_period} || 14;
while (
@{$fullstats->{history} || []}
&&
(
@{$fullstats->{history}} > $ftpstats_size
|| $time - $fullstats->{history}[0]{start} > 86400*$ftpstats_period
)
) {
shift @{$fullstats->{history}}
}
push @debug, scalar @{$fullstats->{history}} if $sdebug;
push @debug, time if $sdebug;
push @debug, scalar localtime($fullstats->{history}[0]{start}) if $sdebug;
# need no eval because if this fails, it is serious
my $sfile = File::Spec->catfile($CPAN::Config->{cpan_home},"FTPstats.yml");
CPAN->_yaml_dumpfile("$sfile.$$",$fullstats);
if ( $sdebug ) {
local $CPAN::DEBUG = 512; # FTP
push @debug, time;
CPAN->debug(sprintf("DEBUG history: before_read[%d]before[%d]at[%d]".
"after[%d]at[%d]oldest[%s]dumped backat[%d]",
@debug,
));
}
# Win32 cannot rename a file to an existing filename
unlink($sfile) if ($^O eq 'MSWin32' or $^O eq 'os2');
_copy_stat($sfile, "$sfile.$$") if -e $sfile;
rename "$sfile.$$", $sfile
or $CPAN::Frontend->mywarn("Could not rename '$sfile.$$' to '$sfile': $!\nGiving up\n");
}
}
# Copy some stat information (owner, group, mode and) from one file to
# another.
# This is a utility function which might be moved to a utility repository.
#-> sub CPAN::FTP::_copy_stat
sub _copy_stat {
my($src, $dest) = @_;
my @stat = stat($src);
if (!@stat) {
$CPAN::Frontend->mywarn("Can't stat '$src': $!\n");
return;
}
eval {
chmod $stat[2], $dest
or $CPAN::Frontend->mywarn("Can't chmod '$dest' to " . sprintf("0%o", $stat[2]) . ": $!\n");
};
warn $@ if $@;
eval {
chown $stat[4], $stat[5], $dest
or do {
my $save_err = $!; # otherwise it's lost in the get... calls
$CPAN::Frontend->mywarn("Can't chown '$dest' to " .
(getpwuid($stat[4]))[0] . "/" .
(getgrgid($stat[5]))[0] . ": $save_err\n"
);
};
};
warn $@ if $@;
}
# if file is CHECKSUMS, suggest the place where we got the file to be
# checked from, maybe only for young files?
#-> sub CPAN::FTP::_recommend_url_for
sub _recommend_url_for {
my($self, $file, $urllist) = @_;
if ($file =~ s|/CHECKSUMS(.gz)?$||) {
my $fullstats = $self->_ftp_statistics();
my $history = $fullstats->{history} || [];
while (my $last = pop @$history) {
last if $last->{end} - time > 3600; # only young results are interesting
next unless $last->{file}; # dirname of nothing dies!
next unless $file eq dirname($last->{file});
return $last->{thesiteurl};
}
}
if ($CPAN::Config->{randomize_urllist}
&&
rand(1) < $CPAN::Config->{randomize_urllist}
) {
$urllist->[int rand scalar @$urllist];
} else {
return ();
}
}
#-> sub CPAN::FTP::_get_urllist
sub _get_urllist {
my($self, $with_defaults) = @_;
$with_defaults ||= 0;
CPAN->debug("with_defaults[$with_defaults]") if $CPAN::DEBUG;
$CPAN::Config->{urllist} ||= [];
unless (ref $CPAN::Config->{urllist} eq 'ARRAY') {
$CPAN::Frontend->mywarn("Malformed urllist; ignoring. Configuration file corrupt?\n");
$CPAN::Config->{urllist} = [];
}
my @urllist = grep { defined $_ and length $_ } @{$CPAN::Config->{urllist}};
push @urllist, @CPAN::Defaultsites if $with_defaults;
for my $u (@urllist) {
CPAN->debug("u[$u]") if $CPAN::DEBUG;
if (UNIVERSAL::can($u,"text")) {
$u->{TEXT} .= "/" unless substr($u->{TEXT},-1) eq "/";
} else {
$u .= "/" unless substr($u,-1) eq "/";
$u = CPAN::URL->new(TEXT => $u, FROM => "USER");
}
}
\@urllist;
}
#-> sub CPAN::FTP::ftp_get ;
sub ftp_get {
my($class,$host,$dir,$file,$target) = @_;
$class->debug(
qq[Going to fetch file [$file] from dir [$dir]
on host [$host] as local [$target]\n]
) if $CPAN::DEBUG;
my $ftp = Net::FTP->new($host);
unless ($ftp) {
$CPAN::Frontend->mywarn(" Could not connect to host '$host' with Net::FTP\n");
return;
}
return 0 unless defined $ftp;
$ftp->debug(1) if $CPAN::DEBUG{'FTP'} & $CPAN::DEBUG;
$class->debug(qq[Going to login("anonymous","$Config::Config{cf_email}")]);
unless ( $ftp->login("anonymous",$Config::Config{'cf_email'}) ) {
my $msg = $ftp->message;
$CPAN::Frontend->mywarn(" Couldn't login on $host: $msg\n");
return;
}
unless ( $ftp->cwd($dir) ) {
my $msg = $ftp->message;
$CPAN::Frontend->mywarn(" Couldn't cwd $dir: $msg\n");
return;
}
$ftp->binary;
$class->debug(qq[Going to ->get("$file","$target")\n]) if $CPAN::DEBUG;
unless ( $ftp->get($file,$target) ) {
my $msg = $ftp->message;
$CPAN::Frontend->mywarn(" Couldn't fetch $file from $host: $msg\n");
return;
}
$ftp->quit; # it's ok if this fails
return 1;
}
# If more accuracy is wanted/needed, Chris Leach sent me this patch...
# > *** /install/perl/live/lib/CPAN.pm- Wed Sep 24 13:08:48 1997
# > --- /tmp/cp Wed Sep 24 13:26:40 1997
# > ***************
# > *** 1562,1567 ****
# > --- 1562,1580 ----
# > return 1 if substr($url,0,4) eq "file";
# > return 1 unless $url =~ m|://([^/]+)|;
# > my $host = $1;
# > + my $proxy = $CPAN::Config->{'http_proxy'} || $ENV{'http_proxy'};
# > + if ($proxy) {
# > + $proxy =~ m|://([^/:]+)|;
# > + $proxy = $1;
# > + my $noproxy = $CPAN::Config->{'no_proxy'} || $ENV{'no_proxy'};
# > + if ($noproxy) {
# > + if ($host !~ /$noproxy$/) {
# > + $host = $proxy;
# > + }
# > + } else {
# > + $host = $proxy;
# > + }
# > + }
# > require Net::Ping;
# > return 1 unless $Net::Ping::VERSION >= 2;
# > my $p;
#-> sub CPAN::FTP::localize ;
sub localize {
my($self,$file,$aslocal,$force,$with_defaults) = @_;
$force ||= 0;
Carp::croak( "Usage: ->localize(cpan_file,as_local_file[,\$force])" )
unless defined $aslocal;
if ($CPAN::DEBUG){
require Carp;
my $longmess = Carp::longmess();
$self->debug("file[$file] aslocal[$aslocal] force[$force] carplongmess[$longmess]");
}
for ($CPAN::Config->{connect_to_internet_ok}) {
$connect_to_internet_ok = $_ if not defined $connect_to_internet_ok and defined $_;
}
my $ph = $CPAN::Config->{pushy_https};
if (!defined $ph || $ph) {
return $self->localize_2021($file,$aslocal,$force,$with_defaults);
} else {
return $self->localize_1995ff($file,$aslocal,$force,$with_defaults);
}
}
sub have_promising_aslocal {
my($self, $aslocal, $force) = @_;
if (-f $aslocal && -r _ && !($force & 1)) {
my $size;
if ($size = -s $aslocal) {
$self->debug("aslocal[$aslocal]size[$size]") if $CPAN::DEBUG;
return 1;
} else {
# empty file from a previous unsuccessful attempt to download it
unlink $aslocal or
$CPAN::Frontend->mydie("Found a zero-length '$aslocal' that I ".
"could not remove.");
}
}
return;
}
#-> sub CPAN::FTP::localize ;
sub localize_2021 {
my($self,$file,$aslocal,$force,$with_defaults) = @_;
return $aslocal if $self->have_promising_aslocal($aslocal, $force);
my($aslocal_dir) = dirname($aslocal);
my $ret;
$self->mymkpath($aslocal_dir);
my $aslocal_tempfile = $aslocal . ".tmp" . $$;
my $base;
if (
($CPAN::META->has_usable('HTTP::Tiny')
&& $CPAN::META->has_usable('Net::SSLeay')
&& $CPAN::META->has_usable('IO::Socket::SSL')
)
|| $CPAN::Config->{curl}
|| $CPAN::Config->{wget}
) {
for my $prx (qw(https_proxy no_proxy)) {
$ENV{$prx} = $CPAN::Config->{$prx} if $CPAN::Config->{$prx};
}
$base = "https://cpan.org/";
} else {
my @missing_modules = grep { ! $CPAN::META->has_usable($_) } qw(HTTP::Tiny Net::SSLeay IO::Socket::SSL);
my $miss = join ", ", map { "'$_'" } @missing_modules;
my $modules = @missing_modules == 1 ? "module" : "modules";
$CPAN::Frontend->mywarn("Missing or unusable $modules $miss, and found neither curl nor wget installed.\n");
if ($CPAN::META->has_usable('HTTP::Tiny')) {
$CPAN::Frontend->mywarn("Need to fall back to http.\n")
}
for my $prx (qw(http_proxy no_proxy)) {
$ENV{$prx} = $CPAN::Config->{$prx} if $CPAN::Config->{$prx};
}
$base = "http://www.cpan.org/";
}
$ret = $self->hostdl_2021($base,$file,$aslocal_tempfile);
if ($ret) { # c&p from below
CPAN->debug("ret[$ret]aslocal[$aslocal]") if $CPAN::DEBUG;
if ($ret eq $aslocal_tempfile) {
# if we got it exactly as we asked for, only then we
# want to rename
rename $aslocal_tempfile, $aslocal
or $CPAN::Frontend->mydie("Error while trying to rename ".
"'$ret' to '$aslocal': $!");
$ret = $aslocal;
}
} else {
unlink $aslocal_tempfile;
return;
}
return $ret;
}
sub hostdl_2021 {
my($self, $base, $file, $aslocal) = @_; # the $aslocal is $aslocal_tempfile in the caller (old convention)
my $proxy_vars = $self->_proxy_vars($base);
my($proto) = $base =~ /^(https?)/;
my $url = "$base$file";
# hostdl_2021 may be called with either http or https urls
if (
$CPAN::META->has_usable('HTTP::Tiny')
&&
(
$proto eq "http"
||
( $CPAN::META->has_usable('Net::SSLeay')
&& $CPAN::META->has_usable('IO::Socket::SSL') )
)
){
# mostly c&p from below
require CPAN::HTTP::Client;
my $chc = CPAN::HTTP::Client->new(
proxy => $CPAN::Config->{http_proxy} || $ENV{http_proxy},
no_proxy => $CPAN::Config->{no_proxy} || $ENV{no_proxy},
);
for my $try ( $url, ( $url !~ /\.gz(?!\n)\Z/ ? "$url.gz" : () ) ) {
$CPAN::Frontend->myprint("Fetching with HTTP::Tiny:\n$try\n");
my $res = eval { $chc->mirror($try, $aslocal) };
if ( $res && $res->{success} ) {
my $now = time;
utime $now, $now, $aslocal; # download time is more
# important than upload
# time
return $aslocal;
}
elsif ( $res && $res->{status} ne '599') {
$CPAN::Frontend->myprint(sprintf(
"HTTP::Tiny failed with code[%s] message[%s]\n",
$res->{status},
$res->{reason},
)
);
}
elsif ( $res && $res->{status} eq '599') {
$CPAN::Frontend->myprint(sprintf(
"HTTP::Tiny failed with an internal error: %s\n",
$res->{content},
)
);
}
else {
my $err = $@ || 'Unknown error';
$CPAN::Frontend->myprint(sprintf(
"Error downloading with HTTP::Tiny: %s\n", $err
)
);
}
}
} elsif ($CPAN::Config->{curl} || $CPAN::Config->{wget}){
# c&p from further down
my($src_switch, $stdout_redir);
my($devnull) = $CPAN::Config->{devnull} || "";
DLPRG: for my $dlprg (qw(curl wget)) {
my $dlprg_configured = $CPAN::Config->{$dlprg};
next unless defined $dlprg_configured && length $dlprg_configured;
my $funkyftp = CPAN::HandleConfig->safe_quote($dlprg_configured);
if ($dlprg eq "wget") {
$src_switch = " -O \"$aslocal\"";
$stdout_redir = "";
} elsif ($dlprg eq 'curl') {
$src_switch = ' -L -f -s -S --netrc-optional';
$stdout_redir = " > \"$aslocal\"";
if ($proxy_vars->{http_proxy}) {
$src_switch .= qq{ -U "$proxy_vars->{proxy_user}:$proxy_vars->{proxy_pass}" -x "$proxy_vars->{http_proxy}"};
}
}
$CPAN::Frontend->myprint(
qq[
Trying with
$funkyftp$src_switch
to get
$url
]);
my($system) =
"$funkyftp$src_switch \"$url\" $devnull$stdout_redir";
$self->debug("system[$system]") if $CPAN::DEBUG;
my($wstatus) = system($system);
if ($wstatus == 0) {
return $aslocal;
} else {
my $estatus = $wstatus >> 8;
my $size = -f $aslocal ?
", left\n$aslocal with size ".-s _ :
"\nWarning: expected file [$aslocal] doesn't exist";
$CPAN::Frontend->myprint(qq{
Function system("$system")
returned status $estatus (wstat $wstatus)$size
});
}
} # DLPRG
} # curl, wget
return;
}
#-> sub CPAN::FTP::localize ;
sub localize_1995ff {
my($self,$file,$aslocal,$force,$with_defaults) = @_;
if ($^O eq 'MacOS') {
# Comment by AK on 2000-09-03: Uniq short filenames would be
# available in CHECKSUMS file
my($name, $path) = File::Basename::fileparse($aslocal, '');
if (length($name) > 31) {
$name =~ s/(
\.(
readme(\.(gz|Z))? |
(tar\.)?(gz|Z) |
tgz |
zip |
pm\.(gz|Z)
)
)$//x;
my $suf = $1;
my $size = 31 - length($suf);
while (length($name) > $size) {
chop $name;
}
$name .= $suf;
$aslocal = File::Spec->catfile($path, $name);
}
}
return $aslocal if $self->have_promising_aslocal($aslocal, $force);
my($maybe_restore) = 0;
if (-f $aslocal) {
rename $aslocal, "$aslocal.bak$$";
$maybe_restore++;
}
my($aslocal_dir) = dirname($aslocal);
# Inheritance is not easier to manage than a few if/else branches
if ($CPAN::META->has_usable('LWP::UserAgent')) {
unless ($Ua) {
CPAN::LWP::UserAgent->config;
eval {$Ua = CPAN::LWP::UserAgent->new;}; # Why is has_usable still not fit enough?
if ($@) {
$CPAN::Frontend->mywarn("CPAN::LWP::UserAgent->new dies with $@\n")
if $CPAN::DEBUG;
} else {
my($var);
$Ua->proxy('ftp', $var)
if $var = $CPAN::Config->{ftp_proxy} || $ENV{ftp_proxy};
$Ua->proxy('http', $var)
if $var = $CPAN::Config->{http_proxy} || $ENV{http_proxy};
$Ua->no_proxy($var)
if $var = $CPAN::Config->{no_proxy} || $ENV{no_proxy};
}
}
}
for my $prx (qw(ftp_proxy http_proxy no_proxy)) {
$ENV{$prx} = $CPAN::Config->{$prx} if $CPAN::Config->{$prx};
}
# Try the list of urls for each single object. We keep a record
# where we did get a file from
my(@reordered,$last);
my $ccurllist = $self->_get_urllist($with_defaults);
$last = $#$ccurllist;
if ($force & 2) { # local cpans probably out of date, don't reorder
@reordered = (0..$last);
} else {
@reordered =
sort {
(substr($ccurllist->[$b],0,4) eq "file")
<=>
(substr($ccurllist->[$a],0,4) eq "file")
or
defined($ThesiteURL)
and
($ccurllist->[$b] eq $ThesiteURL)
<=>
($ccurllist->[$a] eq $ThesiteURL)
} 0..$last;
}
my(@levels);
$Themethod ||= "";
$self->debug("Themethod[$Themethod]reordered[@reordered]") if $CPAN::DEBUG;
my @all_levels = (
["dleasy", "file"],
["dleasy"],
["dlhard"],
["dlhardest"],
["dleasy", "http","defaultsites"],
["dlhard", "http","defaultsites"],
["dleasy", "ftp", "defaultsites"],
["dlhard", "ftp", "defaultsites"],
["dlhardest","", "defaultsites"],
);
if ($Themethod) {
@levels = grep {$_->[0] eq $Themethod} @all_levels;
push @levels, grep {$_->[0] ne $Themethod} @all_levels;
} else {
@levels = @all_levels;
}
@levels = qw/dleasy/ if $^O eq 'MacOS';
my($levelno);
local $ENV{FTP_PASSIVE} =
exists $CPAN::Config->{ftp_passive} ?
$CPAN::Config->{ftp_passive} : 1;
my $ret;
my $stats = $self->_new_stats($file);
LEVEL: for $levelno (0..$#levels) {
my $level_tuple = $levels[$levelno];
my($level,$scheme,$sitetag) = @$level_tuple;
$self->mymkpath($aslocal_dir) unless $scheme && "file" eq $scheme;
my $defaultsites = $sitetag && $sitetag eq "defaultsites" && !@$ccurllist;
my @urllist;
if ($defaultsites) {
unless (defined $connect_to_internet_ok) {
$CPAN::Frontend->myprint(sprintf qq{
I would like to connect to one of the following sites to get '%s':
%s
},
$file,
join("",map { " ".$_->text."\n" } @CPAN::Defaultsites),
);
my $answer = CPAN::Shell::colorable_makemaker_prompt("Is it OK to try to connect to the Internet?", "yes");
if ($answer =~ /^y/i) {
$connect_to_internet_ok = 1;
} else {
$connect_to_internet_ok = 0;
}
}
if ($connect_to_internet_ok) {
@urllist = @CPAN::Defaultsites;
} else {
my $sleep = 2;
# the tricky thing about dying here is that everybody
# believes that calls to exists() or all_objects() are
# safe.
require CPAN::Exception::blocked_urllist;
die CPAN::Exception::blocked_urllist->new;
}
} else { # ! $defaultsites
my @host_seq = $level =~ /dleasy/ ?
@reordered : 0..$last; # reordered has file and $Thesiteurl first
@urllist = map { $ccurllist->[$_] } @host_seq;
}
$self->debug("synth. urllist[@urllist]") if $CPAN::DEBUG;
my $aslocal_tempfile = $aslocal . ".tmp" . $$;
if (my $recommend = $self->_recommend_url_for($file,\@urllist)) {
@urllist = grep { $_ ne $recommend } @urllist;
unshift @urllist, $recommend;
}
$self->debug("synth. urllist[@urllist]") if $CPAN::DEBUG;
$ret = $self->hostdlxxx($level,$scheme,\@urllist,$file,$aslocal_tempfile,$stats);
if ($ret) {
CPAN->debug("ret[$ret]aslocal[$aslocal]") if $CPAN::DEBUG;
if ($ret eq $aslocal_tempfile) {
# if we got it exactly as we asked for, only then we
# want to rename
rename $aslocal_tempfile, $aslocal
or $CPAN::Frontend->mydie("Error while trying to rename ".
"'$ret' to '$aslocal': $!");
$ret = $aslocal;
}
elsif (-f $ret && $scheme eq 'file' ) {
# it's a local file, so there's nothing left to do, we
# let them read from where it is
}
$Themethod = $level;
my $now = time;
# utime $now, $now, $aslocal; # too bad, if we do that, we
# might alter a local mirror
$self->debug("level[$level]") if $CPAN::DEBUG;
last LEVEL;
} else {
unlink $aslocal_tempfile;
last if $CPAN::Signal; # need to cleanup
}
}
if ($ret) {
$stats->{filesize} = -s $ret;
}
$self->debug("before _add_to_statistics") if $CPAN::DEBUG;
$self->_add_to_statistics($stats);
$self->debug("after _add_to_statistics") if $CPAN::DEBUG;
if ($ret) {
unlink "$aslocal.bak$$";
return $ret;
}
unless ($CPAN::Signal) {
my(@mess);
local $" = " ";
if (@{$CPAN::Config->{urllist}}) {
push @mess,
qq{Please check, if the URLs I found in your configuration file \(}.
join(", ", @{$CPAN::Config->{urllist}}).
qq{\) are valid.};
} else {
push @mess, qq{Your urllist is empty!};
}
push @mess, qq{The urllist can be edited.},
qq{E.g. with 'o conf urllist push ftp://myurl/'};
$CPAN::Frontend->mywarn(Text::Wrap::wrap("","","@mess"). "\n\n");
$CPAN::Frontend->mydie("Could not fetch $file\n");
}
if ($maybe_restore) {
rename "$aslocal.bak$$", $aslocal;
$CPAN::Frontend->myprint("Trying to get away with old file:\n" .
$self->ls($aslocal) . "\n");
return $aslocal;
}
return;
}
sub mymkpath {
my($self, $aslocal_dir) = @_;
mkpath($aslocal_dir);
$CPAN::Frontend->mywarn(qq{Warning: You are not allowed to write into }.
qq{directory "$aslocal_dir".
I\'ll continue, but if you encounter problems, they may be due
to insufficient permissions.\n}) unless -w $aslocal_dir;
}
sub hostdlxxx {
my $self = shift;
my $level = shift;
my $scheme = shift;
my $h = shift;
$h = [ grep /^\Q$scheme\E:/, @$h ] if $scheme;
my $method = "host$level";
$self->$method($h, @_);
}
sub _set_attempt {
my($self,$stats,$method,$url) = @_;
push @{$stats->{attempts}}, {
method => $method,
start => _mytime,
url => $url,
};
}
# package CPAN::FTP;
sub hostdleasy { #called from hostdlxxx
my($self,$host_seq,$file,$aslocal,$stats) = @_;
my($ro_url);
HOSTEASY: for $ro_url (@$host_seq) {
$self->_set_attempt($stats,"dleasy",$ro_url);
my $url = "$ro_url$file";
$self->debug("localizing perlish[$url]") if $CPAN::DEBUG;
if ($url =~ /^file:/) {
my $l;
if ($CPAN::META->has_inst('URI::URL')) {
my $u = URI::URL->new($url);
$l = $u->file;
} else { # works only on Unix, is poorly constructed, but
# hopefully better than nothing.
# RFC 1738 says fileurl BNF is
# fileurl = "file://" [ host | "localhost" ] "/" fpath
# Thanks to "Mark D. Baushke" <mdb@cisco.com> for
# the code
($l = $url) =~ s|^file://[^/]*/|/|; # discard the host part
$l =~ s|^file:||; # assume they
# meant
# file://localhost
$l =~ s|^/||s
if ! -f $l && $l =~ m|^/\w:|; # e.g. /P:
}
$self->debug("local file[$l]") if $CPAN::DEBUG;
if ( -f $l && -r _) {
$ThesiteURL = $ro_url;
return $l;
}
# If request is for a compressed file and we can find the
# uncompressed file also, return the path of the uncompressed file
# otherwise, decompress it and return the resulting path
if ($l =~ /(.+)\.gz$/) {
my $ungz = $1;
if ( -f $ungz && -r _) {
$ThesiteURL = $ro_url;
return $ungz;
}
elsif (-f $l && -r _) {
eval { CPAN::Tarzip->new($l)->gunzip($aslocal) };
if ( -f $aslocal && -s _) {
$ThesiteURL = $ro_url;
return $aslocal;
}
elsif (! -s $aslocal) {
unlink $aslocal;
}
elsif (-f $l) {
$CPAN::Frontend->mywarn("Error decompressing '$l': $@\n")
if $@;
return;
}
}
}
# Otherwise, return the local file path if it exists
elsif ( -f $l && -r _) {
$ThesiteURL = $ro_url;
return $l;
}
# If we can't find it, but there is a compressed version
# of it, then decompress it
elsif (-f "$l.gz") {
$self->debug("found compressed $l.gz") if $CPAN::DEBUG;
eval { CPAN::Tarzip->new("$l.gz")->gunzip($aslocal) };
if ( -f $aslocal) {
$ThesiteURL = $ro_url;
return $aslocal;
}
else {
$CPAN::Frontend->mywarn("Error decompressing '$l': $@\n")
if $@;
return;
}
}
$CPAN::Frontend->mywarn("Could not find '$l'\n");
}
$self->debug("it was not a file URL") if $CPAN::DEBUG;
if ($CPAN::META->has_usable('LWP')) {
$CPAN::Frontend->myprint("Fetching with LWP:\n$url\n");
unless ($Ua) {
CPAN::LWP::UserAgent->config;
eval { $Ua = CPAN::LWP::UserAgent->new; };
if ($@) {
$CPAN::Frontend->mywarn("CPAN::LWP::UserAgent->new dies with $@\n");
}
}
my $res = $Ua->mirror($url, $aslocal);
if ($res->is_success) {
$ThesiteURL = $ro_url;
my $now = time;
utime $now, $now, $aslocal; # download time is more
# important than upload
# time
return $aslocal;
} elsif ($url !~ /\.gz(?!\n)\Z/) {
my $gzurl = "$url.gz";
$CPAN::Frontend->myprint("Fetching with LWP:\n$gzurl\n");
$res = $Ua->mirror($gzurl, "$aslocal.gz");
if ($res->is_success) {
if (eval {CPAN::Tarzip->new("$aslocal.gz")->gunzip($aslocal)}) {
$ThesiteURL = $ro_url;
return $aslocal;
}
}
} else {
$CPAN::Frontend->myprint(sprintf(
"LWP failed with code[%s] message[%s]\n",
$res->code,
$res->message,
));
# Alan Burlison informed me that in firewall environments
# Net::FTP can still succeed where LWP fails. So we do not
# skip Net::FTP anymore when LWP is available.
}
} elsif ($url =~ /^http:/i && $CPAN::META->has_usable('HTTP::Tiny')) {
require CPAN::HTTP::Client;
my $chc = CPAN::HTTP::Client->new(
proxy => $CPAN::Config->{http_proxy} || $ENV{http_proxy},
no_proxy => $CPAN::Config->{no_proxy} || $ENV{no_proxy},
);
for my $try ( $url, ( $url !~ /\.gz(?!\n)\Z/ ? "$url.gz" : () ) ) {
$CPAN::Frontend->myprint("Fetching with HTTP::Tiny:\n$try\n");
my $res = eval { $chc->mirror($try, $aslocal) };
if ( $res && $res->{success} ) {
$ThesiteURL = $ro_url;
my $now = time;
utime $now, $now, $aslocal; # download time is more
# important than upload
# time
return $aslocal;
}
elsif ( $res && $res->{status} ne '599') {
$CPAN::Frontend->myprint(sprintf(
"HTTP::Tiny failed with code[%s] message[%s]\n",
$res->{status},
$res->{reason},
)
);
}
elsif ( $res && $res->{status} eq '599') {
$CPAN::Frontend->myprint(sprintf(
"HTTP::Tiny failed with an internal error: %s\n",
$res->{content},
)
);
}
else {
my $err = $@ || 'Unknown error';
$CPAN::Frontend->myprint(sprintf(
"Error downloading with HTTP::Tiny: %s\n", $err
)
);
}
}
}
return if $CPAN::Signal;
if ($url =~ m|^ftp://(.*?)/(.*)/(.*)|) {
# that's the nice and easy way thanks to Graham
$self->debug("recognized ftp") if $CPAN::DEBUG;
my($host,$dir,$getfile) = ($1,$2,$3);
if ($CPAN::META->has_usable('Net::FTP')) {
$dir =~ s|/+|/|g;
$CPAN::Frontend->myprint("Fetching with Net::FTP:\n$url\n");
$self->debug("getfile[$getfile]dir[$dir]host[$host]" .
"aslocal[$aslocal]") if $CPAN::DEBUG;
if (CPAN::FTP->ftp_get($host,$dir,$getfile,$aslocal)) {
$ThesiteURL = $ro_url;
return $aslocal;
}
if ($aslocal !~ /\.gz(?!\n)\Z/) {
my $gz = "$aslocal.gz";
$CPAN::Frontend->myprint("Fetching with Net::FTP\n$url.gz\n");
if (CPAN::FTP->ftp_get($host,
$dir,
"$getfile.gz",
$gz) &&
eval{CPAN::Tarzip->new($gz)->gunzip($aslocal)}
) {
$ThesiteURL = $ro_url;
return $aslocal;
}
}
# next HOSTEASY;
} else {
CPAN->debug("Net::FTP does not count as usable atm") if $CPAN::DEBUG;
}
}
if (
UNIVERSAL::can($ro_url,"text")
and
$ro_url->{FROM} eq "USER"
) {
##address #17973: default URLs should not try to override
##user-defined URLs just because LWP is not available
my $ret = $self->hostdlhard([$ro_url],$file,$aslocal,$stats);
return $ret if $ret;
}
return if $CPAN::Signal;
}
}
# package CPAN::FTP;
sub hostdlhard {
my($self,$host_seq,$file,$aslocal,$stats) = @_;
# Came back if Net::FTP couldn't establish connection (or
# failed otherwise) Maybe they are behind a firewall, but they
# gave us a socksified (or other) ftp program...
my($ro_url);
my($devnull) = $CPAN::Config->{devnull} || "";
# < /dev/null ";
my($aslocal_dir) = dirname($aslocal);
mkpath($aslocal_dir);
my $some_dl_success = 0;
my $any_attempt = 0;
HOSTHARD: for $ro_url (@$host_seq) {
$self->_set_attempt($stats,"dlhard",$ro_url);
my $url = "$ro_url$file";
my($proto,$host,$dir,$getfile);
# Courtesy Mark Conty mark_conty@cargill.com change from
# if ($url =~ m|^ftp://(.*?)/(.*)/(.*)|) {
# to
if ($url =~ m|^([^:]+)://(.*?)/(.*)/(.*)|) {
# proto not yet used
($proto,$host,$dir,$getfile) = ($1,$2,$3,$4);
} else {
next HOSTHARD; # who said, we could ftp anything except ftp?
}
next HOSTHARD if $proto eq "file"; # file URLs would have had
# success above. Likely a bogus URL
# making at least one attempt against a host
$any_attempt++;
$self->debug("localizing funkyftpwise[$url]") if $CPAN::DEBUG;
# Try the most capable first and leave ncftp* for last as it only
# does FTP.
my $proxy_vars = $self->_proxy_vars($ro_url);
DLPRG: for my $f (qw(curl wget lynx ncftpget ncftp)) {
my $funkyftp = CPAN::HandleConfig->safe_quote($CPAN::Config->{$f});
next DLPRG unless defined $funkyftp;
next DLPRG if $funkyftp =~ /^\s*$/;
my($src_switch) = "";
my($chdir) = "";
my($stdout_redir) = " > \"$aslocal\"";
if ($f eq "lynx") {
$src_switch = " -source";
} elsif ($f eq "ncftp") {
next DLPRG unless $url =~ m{\Aftp://};
$src_switch = " -c";
} elsif ($f eq "wget") {
$src_switch = " -O \"$aslocal\"";
$stdout_redir = "";
} elsif ($f eq 'curl') {
$src_switch = ' -L -f -s -S --netrc-optional';
if ($proxy_vars->{http_proxy}) {
$src_switch .= qq{ -U "$proxy_vars->{proxy_user}:$proxy_vars->{proxy_pass}" -x "$proxy_vars->{http_proxy}"};
}
} elsif ($f eq "ncftpget") {
next DLPRG unless $url =~ m{\Aftp://};
$chdir = "cd $aslocal_dir && ";
$stdout_redir = "";
}
$CPAN::Frontend->myprint(
qq[
Trying with
$funkyftp$src_switch
to get
$url
]);
my($system) =
"$chdir$funkyftp$src_switch \"$url\" $devnull$stdout_redir";
$self->debug("system[$system]") if $CPAN::DEBUG;
my($wstatus) = system($system);
if ($f eq "lynx") {
# lynx returns 0 when it fails somewhere
if (-s $aslocal) {
my $content = do { local *FH;
open FH, $aslocal or die;
local $/;
<FH> };
if ($content =~ /^<.*(<title>[45]|Error [45])/si) {
$CPAN::Frontend->mywarn(qq{
No success, the file that lynx has downloaded looks like an error message:
$content
});
$CPAN::Frontend->mysleep(1);
next DLPRG;
}
$some_dl_success++;
} else {
$CPAN::Frontend->myprint(qq{
No success, the file that lynx has downloaded is an empty file.
});
next DLPRG;
}
}
if ($wstatus == 0) {
if (-s $aslocal) {
# Looks good
$some_dl_success++;
}
$ThesiteURL = $ro_url;
return $aslocal;
} else {
my $estatus = $wstatus >> 8;
my $size = -f $aslocal ?
", left\n$aslocal with size ".-s _ :
"\nWarning: expected file [$aslocal] doesn't exist";
$CPAN::Frontend->myprint(qq{
Function system("$system")
returned status $estatus (wstat $wstatus)$size
});
}
return if $CPAN::Signal;
} # download/transfer programs (DLPRG)
} # host
return unless $any_attempt;
if ($some_dl_success) {
$CPAN::Frontend->mywarn("Warning: doesn't seem we had substantial success downloading '$aslocal'. Don't know how to proceed.\n");
} else {
$CPAN::Frontend->mywarn("Warning: no success downloading '$aslocal'. Giving up on it.\n");
}
return;
}
#-> CPAN::FTP::_proxy_vars
sub _proxy_vars {
my($self,$url) = @_;
my $ret = +{};
my $http_proxy = $CPAN::Config->{'http_proxy'} || $ENV{'http_proxy'};
if ($http_proxy) {
my($host) = $url =~ m|://([^/:]+)|;
my $want_proxy = 1;
my $noproxy = $CPAN::Config->{'no_proxy'} || $ENV{'no_proxy'} || "";
my @noproxy = split /\s*,\s*/, $noproxy;
if ($host) {
DOMAIN: for my $domain (@noproxy) {
if ($host =~ /\Q$domain\E$/) { # cf. LWP::UserAgent
$want_proxy = 0;
last DOMAIN;
}
}
} else {
$CPAN::Frontend->mywarn(" Could not determine host from http_proxy '$http_proxy'\n");
}
if ($want_proxy) {
my($user, $pass) =
CPAN::HTTP::Credentials->get_proxy_credentials();
$ret = {
proxy_user => $user,
proxy_pass => $pass,
http_proxy => $http_proxy
};
}
}
return $ret;
}
# package CPAN::FTP;
sub hostdlhardest {
my($self,$host_seq,$file,$aslocal,$stats) = @_;
return unless @$host_seq;
my($ro_url);
my($aslocal_dir) = dirname($aslocal);
mkpath($aslocal_dir);
my $ftpbin = $CPAN::Config->{ftp};
unless ($ftpbin && length $ftpbin && MM->maybe_command($ftpbin)) {
$CPAN::Frontend->myprint("No external ftp command available\n\n");
return;
}
$CPAN::Frontend->mywarn(qq{
As a last resort we now switch to the external ftp command '$ftpbin'
to get '$aslocal'.
Doing so often leads to problems that are hard to diagnose.
If you're the victim of such problems, please consider unsetting the
ftp config variable with
o conf ftp ""
o conf commit
});
$CPAN::Frontend->mysleep(2);
HOSTHARDEST: for $ro_url (@$host_seq) {
$self->_set_attempt($stats,"dlhardest",$ro_url);
my $url = "$ro_url$file";
$self->debug("localizing ftpwise[$url]") if $CPAN::DEBUG;
unless ($url =~ m|^ftp://(.*?)/(.*)/(.*)|) {
next;
}
my($host,$dir,$getfile) = ($1,$2,$3);
my $timestamp = 0;
my($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$mtime,
$ctime,$blksize,$blocks) = stat($aslocal);
$timestamp = $mtime ||= 0;
my($netrc) = CPAN::FTP::netrc->new;
my($netrcfile) = $netrc->netrc;
my($verbose) = $CPAN::DEBUG{'FTP'} & $CPAN::DEBUG ? " -v" : "";
my $targetfile = File::Basename::basename($aslocal);
my(@dialog);
push(
@dialog,
"lcd $aslocal_dir",
"cd /",
map("cd $_", split /\//, $dir), # RFC 1738
"bin",
"passive",
"get $getfile $targetfile",
"quit"
);
if (! $netrcfile) {
CPAN->debug("No ~/.netrc file found") if $CPAN::DEBUG;
} elsif ($netrc->hasdefault || $netrc->contains($host)) {
CPAN->debug(sprintf("hasdef[%d]cont($host)[%d]",
$netrc->hasdefault,
$netrc->contains($host))) if $CPAN::DEBUG;
if ($netrc->protected) {
my $dialog = join "", map { " $_\n" } @dialog;
my $netrc_explain;
if ($netrc->contains($host)) {
$netrc_explain = "Relying that your .netrc entry for '$host' ".
"manages the login";
} else {
$netrc_explain = "Relying that your default .netrc entry ".
"manages the login";
}
$CPAN::Frontend->myprint(qq{
Trying with external ftp to get
'$url'
$netrc_explain
Sending the dialog
$dialog
}
);
$self->talk_ftp("$ftpbin$verbose $host",
@dialog);
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks) = stat($aslocal);
$mtime ||= 0;
if ($mtime > $timestamp) {
$CPAN::Frontend->myprint("GOT $aslocal\n");
$ThesiteURL = $ro_url;
return $aslocal;
} else {
$CPAN::Frontend->myprint("Hmm... Still failed!\n");
}
return if $CPAN::Signal;
} else {
$CPAN::Frontend->mywarn(qq{Your $netrcfile is not }.
qq{correctly protected.\n});
}
} else {
$CPAN::Frontend->mywarn("Your ~/.netrc neither contains $host
nor does it have a default entry\n");
}
# OK, they don't have a valid ~/.netrc. Use 'ftp -n'
# then and login manually to host, using e-mail as
# password.
$CPAN::Frontend->myprint(qq{Issuing "$ftpbin$verbose -n"\n});
unshift(
@dialog,
"open $host",
"user anonymous $Config::Config{'cf_email'}"
);
my $dialog = join "", map { " $_\n" } @dialog;
$CPAN::Frontend->myprint(qq{
Trying with external ftp to get
$url
Sending the dialog
$dialog
}
);
$self->talk_ftp("$ftpbin$verbose -n", @dialog);
($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
$atime,$mtime,$ctime,$blksize,$blocks) = stat($aslocal);
$mtime ||= 0;
if ($mtime > $timestamp) {
$CPAN::Frontend->myprint("GOT $aslocal\n");
$ThesiteURL = $ro_url;
return $aslocal;
} else {
$CPAN::Frontend->myprint("Bad luck... Still failed!\n");
}
return if $CPAN::Signal;
$CPAN::Frontend->mywarn("Can't access URL $url.\n\n");
$CPAN::Frontend->mysleep(2);
} # host
}
# package CPAN::FTP;
sub talk_ftp {
my($self,$command,@dialog) = @_;
my $fh = FileHandle->new;
$fh->open("|$command") or die "Couldn't open ftp: $!";
foreach (@dialog) { $fh->print("$_\n") }
$fh->close; # Wait for process to complete
my $wstatus = $?;
my $estatus = $wstatus >> 8;
$CPAN::Frontend->myprint(qq{
Subprocess "|$command"
returned status $estatus (wstat $wstatus)
}) if $wstatus;
}
# find2perl needs modularization, too, all the following is stolen
# from there
# CPAN::FTP::ls
sub ls {
my($self,$name) = @_;
my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$sizemm,
$atime,$mtime,$ctime,$blksize,$blocks) = lstat($name);
my($perms,%user,%group);
my $pname = $name;
if ($blocks) {
$blocks = int(($blocks + 1) / 2);
}
else {
$blocks = int(($sizemm + 1023) / 1024);
}
if (-f _) { $perms = '-'; }
elsif (-d _) { $perms = 'd'; }
elsif (-c _) { $perms = 'c'; $sizemm = &sizemm; }
elsif (-b _) { $perms = 'b'; $sizemm = &sizemm; }
elsif (-p _) { $perms = 'p'; }
elsif (-S _) { $perms = 's'; }
else { $perms = 'l'; $pname .= ' -> ' . readlink($_); }
my(@rwx) = ('---','--x','-w-','-wx','r--','r-x','rw-','rwx');
my(@moname) = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
my $tmpmode = $mode;
my $tmp = $rwx[$tmpmode & 7];
$tmpmode >>= 3;
$tmp = $rwx[$tmpmode & 7] . $tmp;
$tmpmode >>= 3;
$tmp = $rwx[$tmpmode & 7] . $tmp;
substr($tmp,2,1) =~ tr/-x/Ss/ if -u _;
substr($tmp,5,1) =~ tr/-x/Ss/ if -g _;
substr($tmp,8,1) =~ tr/-x/Tt/ if -k _;
$perms .= $tmp;
my $user = $user{$uid} || $uid; # too lazy to implement lookup
my $group = $group{$gid} || $gid;
my($sec,$min,$hour,$mday,$mon,$year) = localtime($mtime);
my($timeyear);
my($moname) = $moname[$mon];
if (-M _ > 365.25 / 2) {
$timeyear = $year + 1900;
}
else {
$timeyear = sprintf("%02d:%02d", $hour, $min);
}
sprintf "%5lu %4ld %-10s %2d %-8s %-8s %8s %s %2d %5s %s\n",
$ino,
$blocks,
$perms,
$nlink,
$user,
$group,
$sizemm,
$moname,
$mday,
$timeyear,
$pname;
}
1;