summaryrefslogtreecommitdiffstats
path: root/urpm/download.pm
blob: 03aa341bbe5e19ae2bf0f8f393c1e55624142ee4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
package urpm::download;

use strict;
use urpm::msg;
use urpm::cfg;
use Cwd;

#- proxy config file.
our $PROXY_CFG = '/etc/urpmi/proxy.cfg';
my $proxy_config;

#- Timeout for curl connection (in seconds)
our $CONNECT_TIMEOUT = 60;

sub basename { local $_ = shift; s|/*\s*$||; s|.*/||; $_ }

sub import () {
    my $c = caller;
    no strict 'refs';
    foreach my $symbol (qw(get_proxy
	propagate_sync_callback
	sync_file sync_wget sync_curl sync_rsync sync_ssh
	set_proxy_config dump_proxy_config
    )) {
	*{$c . '::' . $symbol} = *$symbol;
    }
}

#- parses proxy.cfg (private)
sub load_proxy_config () {
    return if defined $proxy_config;
    open my $f, $PROXY_CFG or $proxy_config = {}, return;
    local $_;
    while (<$f>) {
	chomp; s/#.*$//; s/^\s*//; s/\s*$//;
	if (/^(?:(.*):\s*)?(ftp_proxy|http_proxy)\s*=\s*(.*)$/) {
	    $proxy_config->{$1 || ''}{$2} = $3;
	    next;
	}
	if (/^(?:(.*):\s*)?proxy_user\s*=\s*([^:]*)(?::(.*))?$/) {
	    $proxy_config->{$1 || ''}{user} = $2;
	    $proxy_config->{$1 || ''}{pwd} = $3 if defined $3;
	    next;
	}
    }
    close $f;
}

#- writes proxy.cfg
sub dump_proxy_config () {
    return 0 unless defined $proxy_config; #- hasn't been read yet
    open my $f, '>', $PROXY_CFG or return 0;
    print $f "# generated " . (scalar localtime) . "\n";
    foreach ('', sort grep { !/^(|cmd_line)$/ } keys %$proxy_config) {
	my $m = $_ eq '' ? '' : "$_:";
	my $p = $proxy_config->{$_};
	foreach (qw(http_proxy ftp_proxy)) {
	    defined $p->{$_} && $p->{$_} ne ''
		and print $f "$m$_=$p->{$_}\n";
	}
	defined $p->{user} && $p->{user} ne ''
	    and print $f "${m}proxy_user=$p->{user}:$p->{pwd}\n";
    }
    close $f;
    chmod 0600, $PROXY_CFG; #- may contain passwords
    return 1;
}

#- deletes the proxy configuration for the specified media
sub remove_proxy_media {
    defined $proxy_config and delete $proxy_config->{$_[0] || ''};
}

#- reads and loads the proxy.cfg file ;
#- returns the global proxy settings (without arguments) or the
#- proxy settings for the specified media (with a media name as argument)
sub get_proxy (;$) {
    my ($o_media) = @_; $o_media ||= '';
    load_proxy_config();
    return $proxy_config->{cmd_line}
	|| $proxy_config->{$o_media}
	|| $proxy_config->{''}
	|| {
	    http_proxy => undef,
	    ftp_proxy => undef,
	    user => undef,
	    pwd => undef,
	};
}

#- copies the settings for proxies from the command line to media named $media
#- and writes the proxy.cfg file (used for new media)
sub copy_cmd_line_proxy {
    my ($media) = @_;
    return unless $media;
    if (defined $proxy_config->{cmd_line}) {
	$proxy_config->{$media} = $proxy_config->{cmd_line};
	dump_proxy_config();
    }
}

#- overrides the config file proxy settings with values passed via command-line
sub set_cmdline_proxy {
    my (%h) = @_;
    $proxy_config->{cmd_line} ||= {
	http_proxy => undef,
	ftp_proxy => undef,
	user => undef,
	pwd => undef,
    };
    $proxy_config->{cmd_line}{$_} = $h{$_} foreach keys %h;
}

#- changes permanently the proxy settings
sub set_proxy_config {
    my ($key, $value, $o_media) = @_;
    $proxy_config->{$o_media || ''}{$key} = $value;
}

#- set up the environment for proxy usage for the appropriate tool.
#- returns an array of command-line arguments.
sub set_proxy {
    my ($proxy) = @_;
    my @res;
    if (defined $proxy->{proxy}{http_proxy} || defined $proxy->{proxy}{ftp_proxy}) {
	for ($proxy->{type}) {
	    /\bwget\b/ and do {
		for ($proxy->{proxy}) {
		    if (defined $_->{http_proxy}) {
			$ENV{http_proxy} = $_->{http_proxy} =~ /^http:/
			    ? $_->{http_proxy}
			    : "http://$_->{http_proxy}";
		    }
		    $ENV{ftp_proxy} = $_->{ftp_proxy} if defined $_->{ftp_proxy};
		    @res = ("--proxy-user=$_->{user}", "--proxy-passwd=$_->{pwd}")
			if defined $_->{user} && defined $_->{pwd};
		}
		last;
	    };
	    /\bcurl\b/ and do {
		for ($proxy->{proxy}) {
		    push @res, ('-x', $_->{http_proxy}) if defined $_->{http_proxy};
		    push @res, ('-x', $_->{ftp_proxy}) if defined $_->{ftp_proxy};
		    push @res, ('-U', "$_->{user}:$_->{pwd}")
			if defined $_->{user} && defined $_->{pwd};
		}
		last;
	    };
	    die N("Unknown webfetch `%s' !!!\n", $proxy->{type});
	}
    }
    return @res;
}

sub propagate_sync_callback {
    my $options = shift @_;
    if (ref($options) && $options->{callback}) {
	my $mode = shift @_;
	if ($mode =~ /^(?:start|progress|end)$/) {
	    my $file = shift @_;
	    $file =~ s|([^:]*://[^/:\@]*:)[^/:\@]*(\@.*)|$1xxxx$2|; #- if needed...
	    return $options->{callback}($mode, $file, @_);
	} else {
	    return $options->{callback}($mode, @_);
	}
    }
}

sub sync_file {
    my $options = shift;
    foreach (@_) {
	my ($in) = m!^(?:removable[^:]*:/|file:/)(/.*)!;
	propagate_sync_callback($options, 'start', $_);
	require urpm::util;
	urpm::util::copy($in || $_, ref($options) ? $options->{dir} : $options)
	    or die N("copy failed");
	propagate_sync_callback($options, 'end', $_);
    }
}

sub sync_wget {
    -x "/usr/bin/wget" or die N("wget is missing\n");
    my $options = shift @_;
    $options = { dir => $options } if !ref $options;
    #- force download to be done in cachedir to avoid polluting cwd.
    my $cwd = getcwd();
    chdir $options->{dir};
    my ($buf, $total, $file) = ('', undef, undef);
    my $wget_pid = open my $wget, join(" ", map { "'$_'" }
	#- construction of the wget command-line
	"/usr/bin/wget",
	($options->{limit_rate} ? "--limit-rate=$options->{limit_rate}" : ()),
	($options->{resume} ? "--continue" : ()),
	($options->{proxy} ? set_proxy({ type => "wget", proxy => $options->{proxy} }) : ()),
	($options->{callback} ? ("--progress=bar:force", "-o", "-") :
	    $options->{quiet} ? "-q" : @{[]}),
	"--retr-symlinks",
	"--connect-timeout=$CONNECT_TIMEOUT",
	"-NP",
	$options->{dir},
	@_
    ) . " |";
    local $/ = \1; #- read input by only one char, this is slow but very nice (and it works!).
    while (<$wget>) {
	$buf .= $_;
	if ($_ eq "\r" || $_ eq "\n") {
	    if ($options->{callback}) {
		if ($buf =~ /^--\d\d:\d\d:\d\d--\s+(\S.*)\n/ms) {
		    if ($file && $file ne $1) {
			propagate_sync_callback($options, 'end', $file);
			undef $file;
		    }
		    ! defined $file and propagate_sync_callback($options, 'start', $file = $1);
		} elsif (defined $file && ! defined $total && $buf =~ /==>\s+RETR/) {
		    $total = '';
		} elsif (defined $total && $total eq '' && $buf =~ /^[^:]*:\s+(\d\S*)/) {
		    $total = $1;
		} elsif (my ($percent, $speed, $eta) = $buf =~ /^\s*(\d+)%.*\s+(\S+)\s+ETA\s+(\S+)\s*[\r\n]$/ms) {
		    if (propagate_sync_callback($options, 'progress', $file, $percent, $total, $eta, $speed) eq 'canceled') {
			kill 15, $wget_pid;
			close $wget;
			return;
		    }
		    if ($_ eq "\n") {
			propagate_sync_callback($options, 'end', $file);
			($total, $file) = (undef, undef);
		    }
		}
	    } else {
		$options->{quiet} or print STDERR $buf;
	    }
	    $buf = '';
	}
    }
    $file and propagate_sync_callback($options, 'end', $file);
    chdir $cwd;
    close $wget or die N("wget failed: exited with %d or signal %d\n", $? >> 8, $? & 127);
}

sub sync_curl {
    -x "/usr/bin/curl" or die N("curl is missing\n");
    my $options = shift @_;
    $options = { dir => $options } if !ref $options;
    #- force download to be done in cachedir to avoid polluting cwd,
    #- however for curl, this is mandatory.
    my $cwd = getcwd();
    chdir($options->{dir});
    my (@ftp_files, @other_files);
    foreach (@_) {
	my ($proto, $nick, $rest) = m,^(http|ftp)://([^:/]+):(.*),,;
	if ($nick) { #- escape @ in user names
	    $nick =~ s/@/%40/;
	    $_ = "$proto://$nick:$rest";
	}
	if (m|^ftp://.*/([^/]*)$| && -e $1 && -s _ > 8192) { #- manage time stamp for large file only
	    push @ftp_files, $_; next;
	}
	push @other_files, $_;
    }
    if (@ftp_files) {
	my ($cur_ftp_file, %ftp_files_info);

	eval { require Date::Manip };

	#- prepare to get back size and time stamp of each file.
	open my $curl, join(" ", map { "'$_'" } "/usr/bin/curl",
	    ($options->{limit_rate} ? ("--limit-rate", $options->{limit_rate}) : ()),
	    ($options->{proxy} ? set_proxy({ type => "curl", proxy => $options->{proxy} }) : ()),
	    "--stderr", "-", # redirect everything to stdout
	    "--disable-epsv",
	    "--connect-timeout", $CONNECT_TIMEOUT,
	    "-s", "-I", @ftp_files) . " |";
	while (<$curl>) {
	    if (/Content-Length:\s*(\d+)/) {
		!$cur_ftp_file || exists($ftp_files_info{$cur_ftp_file}{size})
		    and $cur_ftp_file = shift @ftp_files;
		$ftp_files_info{$cur_ftp_file}{size} = $1;
	    }
	    if (/Last-Modified:\s*(.*)/) {
		!$cur_ftp_file || exists($ftp_files_info{$cur_ftp_file}{time})
		    and $cur_ftp_file = shift @ftp_files;
		eval {
		    $ftp_files_info{$cur_ftp_file}{time} = Date::Manip::ParseDate($1);
		    #- remove day and hour.
		    $ftp_files_info{$cur_ftp_file}{time} =~ s/(\d{6}).{4}(.*)/$1$2/;
		};
	    }
	}
	close $curl;

	#- now analyse size and time stamp according to what already exists here.
	if (@ftp_files) {
	    #- re-insert back shifted element of ftp_files, because curl output above
	    #- has not been parsed correctly, so in doubt download them all.
	    push @ftp_files, keys %ftp_files_info;
	} else {
	    #- for that, it should be clear ftp_files is empty...
	    #- elsewhere, the above work was useless.
	    foreach (keys %ftp_files_info) {
		my ($lfile) = m|/([^/]*)$| or next; #- strange if we can't parse it correctly.
		my $ltime = eval { Date::Manip::ParseDate(scalar gmtime((stat $1)[9])) };
		$ltime =~ s/(\d{6}).{4}(.*)/$1$2/; #- remove day and hour.
		-s $lfile == $ftp_files_info{$_}{size} && $ftp_files_info{$_}{time} eq $ltime or
		push @ftp_files, $_;
	    }
	}
    }
    # Indicates whether this option is available in our curl
    our $location_trusted;
    if (!defined $location_trusted) {
	$location_trusted = `/usr/bin/curl -h` =~ /location-trusted/ ? 1 : 0;
    }
    #- http files (and other files) are correctly managed by curl wrt conditional download.
    #- options for ftp files, -R (-O <file>)*
    #- options for http files, -R (-z file -O <file>)*
    if (my @all_files = (
	    (map { ("-O", $_) } @ftp_files),
	    (map { m|/([^/]*)$| ? ("-z", $1, "-O", $_) : @{[]} } @other_files)))
    {
	my @l = (@ftp_files, @other_files);
	my ($buf, $file); $buf = '';
	my $curl_pid = open my $curl, join(" ", map { "'$_'" } "/usr/bin/curl",
	    ($options->{limit_rate} ? ("--limit-rate", $options->{limit_rate}) : ()),
	    ($options->{resume} ? ("--continue-at", "-") : ()),
	    ($options->{proxy} ? set_proxy({ type => "curl", proxy => $options->{proxy} }) : ()),
	    ($options->{quiet} && !$options->{verbose} ? "-s" : @{[]}),
	    "-k",
	    $location_trusted ? "--location-trusted" : @{[]},
	    "-R",
	    "-f",
	    "--disable-epsv",
	    "--connect-timeout", $CONNECT_TIMEOUT,
	    "--stderr", "-", # redirect everything to stdout
	    @all_files) . " |";
	local $/ = \1; #- read input by only one char, this is slow but very nice (and it works!).
	while (<$curl>) {
	    $buf .= $_;
	    if ($_ eq "\r" || $_ eq "\n") {
		if ($options->{callback}) {
		    unless (defined $file) {
			$file = shift @l;
			propagate_sync_callback($options, 'start', $file);
		    }
		    if (my ($percent, $total, $eta, $speed) = $buf =~ /^\s*(\d+)\s+(\S+)[^\r\n]*\s+(\S+)\s+-?(\S+)\s*[\r\n]$/ms) {
			if (propagate_sync_callback($options, 'progress', $file, $percent, $total, $eta, $speed) eq 'canceled') {
			    kill 15, $curl_pid;
			    close $curl;
			    return;
			}
			#- this regexp checks that download has actually started
			#- (work around a bug in curl 7.12.2 output for auth sources)
			if ($_ eq "\n" && $buf !~ /--:--:-- --:--:-- --:--:--/) {
			    propagate_sync_callback($options, 'end', $file);
			    $file = undef;
			}
		    } elsif ($buf =~ /^curl:/) { #- likely to be an error reported by curl
			local $/ = "\n";
			chomp $buf;
			propagate_sync_callback($options, 'error', $file, $buf);
		    }
		} else {
		    $options->{quiet} or print STDERR $buf;
		}
		$buf = '';
	    }
	}
	chdir $cwd;
	close $curl or die N("curl failed: exited with %d or signal %d\n", $? >> 8, $? & 127);
    } else {
	chdir $cwd;
    }
}

sub _calc_limit_rate {
    my $limit_rate = $_[0];
    for ($limit_rate) {
	/^(\d+)$/     and $limit_rate = int $1/1024, last;
	/^(\d+)[kK]$/ and $limit_rate = $1, last;
	/^(\d+)[mM]$/ and $limit_rate = 1024*$1, last;
	/^(\d+)[gG]$/ and $limit_rate = 1024*1024*$1, last;
    }
    $limit_rate;
}

sub sync_rsync {
    -x "/usr/bin/rsync" or die N("rsync is missing\n");
    my $options = shift @_;
    $options = { dir => $options } if !ref $options;
    #- force download to be done in cachedir to avoid polluting cwd.
    my $cwd = getcwd();
    chdir($options->{dir});
    my $limit_rate = _calc_limit_rate $options->{limit_rate};
    foreach (@_) {
	my $count = 10; #- retry count on error (if file exists).
	my $basename = basename($_);
	my $file =  m!^rsync://([^/]*::.*)! ? $1 : $_;
	propagate_sync_callback($options, 'start', $file);
	do {
	    local $_;
	    my $buf = '';
	    open my $rsync, join(" ", "/usr/bin/rsync",
		($limit_rate ? "--bwlimit=$limit_rate" : @{[]}),
		($options->{quiet} ? qw(-q) : qw(--progress -v)),
		($options->{compress} ? qw(-z) : @{[]}),
		($options->{ssh} ? qw(-e ssh) : @{[]}),
		qw(--partial --no-whole-file),
		"'$file' '$options->{dir}' |");
	    local $/ = \1; #- read input by only one char, this is slow but very nice (and it works!).
	    while (<$rsync>) {
		$buf .= $_;
		if ($_ eq "\r" || $_ eq "\n") {
		    if ($options->{callback}) {
			if (my ($percent, $speed) = $buf =~ /^\s*\d+\s+(\d+)%\s+(\S+)\s+/) {
			    propagate_sync_callback($options, 'progress', $file, $percent, undef, undef, $speed);
			}
		    } else {
			$options->{quiet} or print STDERR $buf;
		    }
		    $buf = '';
		}
	    }
	    close $rsync;
	} while ($? != 0 && --$count > 0 && -e $options->{dir} . "/$basename");
	propagate_sync_callback($options, 'end', $file);
    }
    chdir $cwd;
    $? == 0 or die N("rsync failed: exited with %d or signal %d\n", $? >> 8, $? & 127);
}

sub sync_ssh {
    -x "/usr/bin/ssh" or die N("ssh is missing\n");
    my $options = shift(@_);
    $options->{ssh} = 1;
    sync_rsync($options, @_);
}

#- get the width of the terminal
my $wchar = 79;
eval {
    require Term::ReadKey;
    ($wchar) = Term::ReadKey::GetTerminalSize();
    --$wchar;
};

#- default logger suitable for sync operation on STDERR only.
sub sync_logger {
    my ($mode, $file, $percent, $total, $eta, $speed) = @_;
    if ($mode eq 'start') {
	print STDERR "    $file\n";
    } elsif ($mode eq 'progress') {
	my $text;
	if (defined $total && defined $eta) {
	    $text = N("        %s%% of %s completed, ETA = %s, speed = %s", $percent, $total, $eta, $speed);
	} else {
	    $text = N("        %s%% completed, speed = %s", $percent, $speed);
	}
	if (length($text) > $wchar) { $text = substr($text, 0, $wchar) }
	print STDERR $text, " " x ($wchar - length($text)), "\r";
    } elsif ($mode eq 'end') {
	print STDERR " " x $wchar, "\r";
    } elsif ($mode eq 'error') {
	#- error is 3rd argument, saved in $percent
	print STDERR N("...retrieving failed: %s", $percent), "\n";
    }
}

1;

__END__

=head1 NAME

urpm::download - download routines for the urpm* tools

=head1 SYNOPSIS

=head1 DESCRIPTION

=head1 COPYRIGHT

Copyright (C) 2000-2004 Mandrakesoft

=cut