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
|
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
package Dselect::Ftp;
use Net::FTP;
use Data::Dumper;
use strict;
use warnings;
use Exporter qw(import);
our @EXPORT = qw(%config yesno do_connect do_mdtm add_site edit_site
edit_config read_config store_config view_mirrors nb);
our %config;
sub nb {
my $nb = shift;
if ($nb > 1024**2) {
return sprintf("%.2fM", $nb / 1024**2);
} elsif ($nb > 1024) {
return sprintf("%.2fk", $nb / 1024);
} else {
return sprintf("%.2fb", $nb);
}
}
sub read_config {
my $vars = shift;
my ($code, $conf);
local($/);
open(my $vars_fh, '<', $vars) ||
die "Couldn't open $vars : $!\n" .
"Try to relaunch the 'Access' step in dselect, thanks.\n";
$code = <$vars_fh>;
close $vars_fh;
my $VAR1;
$conf = eval $code;
die "Couldn't eval $vars content : $@\n" if ($@);
if (ref($conf) =~ /HASH/) {
foreach (keys %{$conf}) {
$config{$_} = $conf->{$_};
}
} else {
print "Bad $vars file : removing it.\n";
print "Please relaunch the 'Access' step in dselect. Thanks.\n";
unlink $vars;
exit 0;
}
}
sub store_config {
my $vars = shift;
# Check that config is completed
return if not $config{'done'};
open(my $vars_fh, '>', $vars) ||
die "Couldn't open $vars in write mode : $!\n";
print $vars_fh Dumper(\%config);
close $vars_fh;
}
sub view_mirrors {
if (-f '/usr/lib/dpkg/methods/ftp/README.mirrors.txt') {
system('pager', '/usr/lib/dpkg/methods/ftp/README.mirrors.txt');
} elsif (-f '/usr/lib/dpkg/methods/ftp/README.mirrors.txt.gz') {
system('gzip -dc /usr/lib/dpkg/methods/ftp/README.mirrors.txt.gz | pager');
} else {
print "/usr/lib/dpkg/methods/ftp/README.mirrors.txt(.gz): file not found.\n";
}
}
sub edit_config {
my $methdir = shift;
my $i;
#Get a config for ftp sites
while(1) {
$i = 1;
print "\n\nList of selected ftp sites :\n";
foreach (@{$config{'site'}}) {
print "$i. ftp://$_->[0]$_->[1] @{$_->[2]}\n";
$i++;
}
print "\nEnter a command (a=add e=edit d=delete q=quit m=mirror list) \n";
print "eventually followed by a site number : ";
chomp($_ = <STDIN>);
/q/i && last;
/a/i && add_site();
/d\s*(\d+)/i &&
do { splice(@{$config{'site'}}, $1-1, 1) if ($1 <= @{$config{'site'}});
next;};
/e\s*(\d+)/i &&
do { edit_site($config{'site'}[$1-1]) if ($1 <= @{$config{'site'}});
next; };
m#m#i && view_mirrors();
}
print "\n";
$config{'use_auth_proxy'} = yesno($config{'use_auth_proxy'} ? "y" : "n",
"Go through an authenticated proxy");
if ($config{'use_auth_proxy'}) {
print "\nEnter proxy hostname [$config{'proxyhost'}] : ";
chomp($_ = <STDIN>);
$config{'proxyhost'} = $_ || $config{'proxyhost'};
print "\nEnter proxy log name [$config{'proxylogname'}] : ";
chomp($_ = <STDIN>);
$config{'proxylogname'} = $_ || $config{'proxylogname'};
print "\nEnter proxy password [$config{'proxypassword'}] : ";
chomp ($_ = <STDIN>);
$config{'proxypassword'} = $_ || $config{'proxypassword'};
}
print "\nEnter directory to download binary package files to\n";
print "(relative to $methdir)\n";
while(1) {
print "[$config{'dldir'}] : ";
chomp($_ = <STDIN>);
s{/$}{};
$config{'dldir'} = $_ if ($_);
last if -d "$methdir/$config{'dldir'}";
print "$methdir/$config{'dldir'} is not a directory !\n";
}
}
sub add_site {
my $pas = 1;
my $user = "anonymous";
my $email = `whoami`;
chomp $email;
$email .= '@' . `cat /etc/mailname || dnsdomainname`;
chomp $email;
my $dir = "/debian";
push (@{$config{'site'}}, [ "", $dir, [ "dists/stable/main",
"dists/stable/contrib",
"dists/stable/non-free" ],
$pas, $user, $email ]);
edit_site($config{'site'}[@{$config{'site'}} - 1]);
}
sub edit_site {
my $site = shift;
local($_);
print "\nEnter ftp site [$site->[0]] : ";
chomp($_ = <STDIN>);
$site->[0] = $_ || $site->[0];
print "\nUse passive mode [" . ($site->[3] ? "y" : "n") ."] : ";
chomp($_ = <STDIN>);
$site->[3] = (/y/i ? 1 : 0) if ($_);
print "\nEnter username [$site->[4]] : ";
chomp($_ = <STDIN>);
$site->[4] = $_ || $site->[4];
print <<'EOF';
If you're using anonymous ftp to retrieve files, enter your email
address for use as a password. Otherwise enter your password,
or "?" if you want dselect-ftp to prompt you each time.
EOF
print "Enter password [$site->[5]] : ";
chomp($_ = <STDIN>);
$site->[5] = $_ || $site->[5];
print "\nEnter debian directory [$site->[1]] : ";
chomp($_ = <STDIN>);
$site->[1] = $_ || $site->[1];
print "\nEnter space separated list of distributions to get\n";
print "[@{$site->[2]}] : ";
chomp($_ = <STDIN>);
$site->[2] = [ split(/\s+/) ] if $_;
}
sub yesno($$) {
my ($d, $msg) = @_;
my ($res, $r);
$r = -1;
$r = 0 if $d eq "n";
$r = 1 if $d eq "y";
die "Incorrect usage of yesno, stopped" if $r == -1;
while (1) {
print $msg, " [$d]: ";
$res = <STDIN>;
$res =~ /^[Yy]/ and return 1;
$res =~ /^[Nn]/ and return 0;
$res =~ /^[ \t]*$/ and return $r;
print "Please enter one of the letters 'y' or 'n'\n";
}
}
##############################
sub do_connect {
my($ftpsite,$username,$pass,$ftpdir,$passive,
$useproxy,$proxyhost,$proxylogname,$proxypassword) = @_;
my($rpass,$remotehost,$remoteuser,$ftp);
TRY_CONNECT:
while(1) {
my $exit = 0;
if ($useproxy) {
$remotehost = $proxyhost;
$remoteuser = $username . "@" . $ftpsite;
} else {
$remotehost = $ftpsite;
$remoteuser = $username;
}
print "Connecting to $ftpsite...\n";
$ftp = Net::FTP->new($remotehost, Passive => $passive);
if(!$ftp || !$ftp->ok) {
print "Failed to connect\n";
$exit=1;
}
if (!$exit) {
# $ftp->debug(1);
if ($useproxy) {
print "Login on $proxyhost...\n";
$ftp->_USER($proxylogname);
$ftp->_PASS($proxypassword);
}
print "Login as $username...\n";
if ($pass eq "?") {
print "Enter password for ftp: ";
system("stty", "-echo");
$rpass = <STDIN>;
chomp $rpass;
print "\n";
system("stty", "echo");
} else {
$rpass = $pass;
}
if(!$ftp->login($remoteuser, $rpass))
{ print $ftp->message() . "\n"; $exit=1; }
}
if (!$exit) {
print "Setting transfer mode to binary...\n";
if(!$ftp->binary()) { print $ftp->message . "\n"; $exit=1; }
}
if (!$exit) {
print "Cd to '$ftpdir'...\n";
if(!$ftp->cwd($ftpdir)) { print $ftp->message . "\n"; $exit=1; }
}
if ($exit) {
if (yesno ("y", "Retry connection at once")) {
next TRY_CONNECT;
} else {
die "error";
}
}
last TRY_CONNECT;
}
# if(!$ftp->pasv()) { print $ftp->message . "\n"; die "error"; }
return $ftp;
}
##############################
# assume server supports MDTM - will be adjusted if needed
my $has_mdtm = 1;
my %months = ('Jan', 0,
'Feb', 1,
'Mar', 2,
'Apr', 3,
'May', 4,
'Jun', 5,
'Jul', 6,
'Aug', 7,
'Sep', 8,
'Oct', 9,
'Nov', 10,
'Dec', 11);
sub do_mdtm {
my ($ftp, $file) = @_;
my ($time);
#if ($has_mdtm) {
$time = $ftp->mdtm($file);
# my $code=$ftp->code(); my $message=$ftp->message();
# print " [ $code: $message ] ";
if ($ftp->code() == 502 # MDTM not implemented
|| $ftp->code() == 500 # command not understood (SUN firewall)
) {
$has_mdtm = 0;
} elsif (!$ftp->ok()) {
return;
}
#}
if (! $has_mdtm) {
use Time::Local;
my @files = $ftp->dir($file);
if (($#files == -1) || ($ftp->code == 550)) { # No such file or directory
return;
}
# my $code=$ftp->code(); my $message=$ftp->message();
# print " [ $code: $message ] ";
# print "[$#files]";
# get the date components from the output of "ls -l"
if ($files[0] =~
/([^ ]+ *){5}[^ ]+ ([A-Z][a-z]{2}) ([ 0-9][0-9]) ([0-9 ][0-9][:0-9][0-9]{2})/) {
my($month_name, $day, $yearOrTime, $month, $hours, $minutes,
$year);
# what we can read
$month_name = $2;
$day = 0 + $3;
$yearOrTime = $4;
# translate the month name into number
$month = $months{$month_name};
# recognize time or year, and compute missing one
if ($yearOrTime =~ /([0-9]{2}):([0-9]{2})/) {
$hours = 0 + $1; $minutes = 0 + $2;
my @this_date = gmtime(time());
my $this_month = $this_date[4];
my $this_year = $this_date[5];
if ($month > $this_month) {
$year = $this_year - 1;
} else {
$year = $this_year;
}
} elsif ($yearOrTime =~ / [0-9]{4}/) {
$hours = 0; $minutes = 0;
$year = $yearOrTime - 1900;
} else {
die "Cannot parse year-or-time";
}
# build a system time
$time = timegm (0, $minutes, $hours, $day, $month, $year);
} else {
die "Regexp match failed on LIST output";
}
}
return $time;
}
1;
__END__
|