Linux ip-172-31-23-187 5.15.0-1084-aws #91~20.04.1-Ubuntu SMP Fri May 2 07:00:04 UTC 2025 aarch64
Apache/2.4.41 (Ubuntu)
: 172.31.23.187 | : 172.31.80.121
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usr /
sbin /
[ HOME SHELL ]
Name
Size
Permission
Action
ModemManager
1.78
MB
-rwxr-xr-x
a2disconf
15.89
KB
-rwxr-xr-x
a2dismod
15.89
KB
-rwxr-xr-x
a2dissite
15.89
KB
-rwxr-xr-x
a2enconf
15.89
KB
-rwxr-xr-x
a2enmod
15.89
KB
-rwxr-xr-x
a2ensite
15.89
KB
-rwxr-xr-x
a2query
9.64
KB
-rwxr-xr-x
aa-remove-unknown
3
KB
-rwxr-xr-x
aa-status
8.63
KB
-rwxr-xr-x
aa-teardown
139
B
-rwxr-xr-x
accessdb
10.15
KB
-rwxr-xr-x
add-shell
860
B
-rwxr-xr-x
addgnupghome
3
KB
-rwxr-xr-x
addgroup
36.9
KB
-rwxr-xr-x
adduser
36.9
KB
-rwxr-xr-x
agetty
59.15
KB
-rwxr-xr-x
apache2
699.64
KB
-rwxr-xr-x
apache2ctl
7.06
KB
-rwxr-xr-x
apachectl
7.06
KB
-rwxr-xr-x
apparmor_parser
1.4
MB
-rwxr-xr-x
apparmor_status
8.63
KB
-rwxr-xr-x
applygnupgdefaults
2.17
KB
-rwxr-xr-x
arp
65.01
KB
-rwxr-xr-x
arpd
70.05
KB
-rwxr-xr-x
arptables
207
KB
-rwxr-xr-x
arptables-nft
207
KB
-rwxr-xr-x
arptables-nft-restore
207
KB
-rwxr-xr-x
arptables-nft-save
207
KB
-rwxr-xr-x
arptables-restore
207
KB
-rwxr-xr-x
arptables-save
207
KB
-rwxr-xr-x
atd
25.95
KB
-rwxr-xr-x
badblocks
26.1
KB
-rwxr-xr-x
bcache-super-show
13.93
KB
-rwxr-xr-x
blkdeactivate
14.49
KB
-rwxr-xr-x
blkdiscard
26.01
KB
-rwxr-xr-x
blkid
114.04
KB
-rwxr-xr-x
blkzone
66.01
KB
-rwxr-xr-x
blockdev
58.01
KB
-rwxr-xr-x
bridge
102.07
KB
-rwxr-xr-x
cache_check
1.2
MB
-rwxr-xr-x
cache_dump
1.2
MB
-rwxr-xr-x
cache_metadata_size
1.2
MB
-rwxr-xr-x
cache_repair
1.2
MB
-rwxr-xr-x
cache_restore
1.2
MB
-rwxr-xr-x
cache_writeback
1.2
MB
-rwxr-xr-x
capsh
26.09
KB
-rwxr-xr-x
cfdisk
94.35
KB
-rwxr-xr-x
cgdisk
186.26
KB
-rwxr-xr-x
chcpu
42.01
KB
-rwxr-xr-x
check_forensic
952
B
-rwxr-xr-x
chgpasswd
61.83
KB
-rwxr-xr-x
chmem
58.01
KB
-rwxr-xr-x
chpasswd
57.84
KB
-rwxr-xr-x
chroot
38.22
KB
-rwxr-xr-x
cpgr
59.88
KB
-rwxr-xr-x
cppw
59.88
KB
-rwxr-xr-x
cron
50.35
KB
-rwxr-xr-x
cryptdisks_start
1.51
KB
-rwxr-xr-x
cryptdisks_stop
844
B
-rwxr-xr-x
cryptsetup
127.27
KB
-rwxr-xr-x
cryptsetup-reencrypt
97.09
KB
-rwxr-xr-x
ctrlaltdel
34.01
KB
-rwxr-xr-x
debugfs
225.52
KB
-rwxr-xr-x
delgroup
16.11
KB
-rwxr-xr-x
deluser
16.11
KB
-rwxr-xr-x
depmod
162.18
KB
-rwxr-xr-x
devlink
146.23
KB
-rwxr-xr-x
dhclient
508.59
KB
-rwxr-xr-x
dhclient-script
15.92
KB
-rwxr-xr-x
dmeventd
46.03
KB
-rwxr-xr-x
dmidecode
110.57
KB
-rwxr-xr-x
dmsetup
178.64
KB
-rwxr-xr-x
dmstats
178.64
KB
-rwxr-xr-x
doc_loadbios
9.93
KB
-rwxr-xr-x
docfdisk
13.93
KB
-rwxr-xr-x
dosfsck
53.94
KB
-rwxr-xr-x
dosfslabel
53.94
KB
-rwxr-xr-x
dpkg-preconfigure
3.58
KB
-rwxr-xr-x
dpkg-reconfigure
4.34
KB
-rwxr-xr-x
dumpe2fs
26.09
KB
-rwxr-xr-x
e2freefrag
14.09
KB
-rwxr-xr-x
e2fsck
314.91
KB
-rwxr-xr-x
e2image
34.09
KB
-rwxr-xr-x
e2label
102.3
KB
-rwxr-xr-x
e2mmpstatus
26.09
KB
-rwxr-xr-x
e2scrub
7.13
KB
-rwxr-xr-x
e2scrub_all
5.27
KB
-rwxr-xr-x
e2undo
18.09
KB
-rwxr-xr-x
e4crypt
22.16
KB
-rwxr-xr-x
e4defrag
26.09
KB
-rwxr-xr-x
ebtables
207
KB
-rwxr-xr-x
ebtables-nft
207
KB
-rwxr-xr-x
ebtables-nft-restore
207
KB
-rwxr-xr-x
ebtables-nft-save
207
KB
-rwxr-xr-x
ebtables-restore
207
KB
-rwxr-xr-x
ebtables-save
207
KB
-rwxr-xr-x
era_check
1.2
MB
-rwxr-xr-x
era_dump
1.2
MB
-rwxr-xr-x
era_invalidate
1.2
MB
-rwxr-xr-x
era_restore
1.2
MB
-rwxr-xr-x
ethtool
362.81
KB
-rwxr-xr-x
faillock
13.93
KB
-rwxr-xr-x
fatlabel
53.94
KB
-rwxr-xr-x
fdformat
30.01
KB
-rwxr-xr-x
fdisk
146.04
KB
-rwxr-xr-x
filefrag
14.11
KB
-rwxr-xr-x
findfs
10.01
KB
-rwxr-xr-x
fixparts
62.26
KB
-rwxr-xr-x
flash-kernel
858
B
-rwxr-xr-x
flash_erase
38.01
KB
-rwxr-xr-x
flash_eraseall
150
B
-rwxr-xr-x
flash_lock
10.01
KB
-rwxr-xr-x
flash_otp_dump
9.93
KB
-rwxr-xr-x
flash_otp_info
9.93
KB
-rwxr-xr-x
flash_otp_lock
9.93
KB
-rwxr-xr-x
flash_otp_write
9.93
KB
-rwxr-xr-x
flash_unlock
10.01
KB
-rwxr-xr-x
flashcp
14.02
KB
-rwxr-xr-x
fsadm
23.54
KB
-rwxr-xr-x
fsck
46.04
KB
-rwxr-xr-x
fsck.btrfs
1.16
KB
-rwxr-xr-x
fsck.cramfs
38.04
KB
-rwxr-xr-x
fsck.ext2
314.91
KB
-rwxr-xr-x
fsck.ext3
314.91
KB
-rwxr-xr-x
fsck.ext4
314.91
KB
-rwxr-xr-x
fsck.fat
53.94
KB
-rwxr-xr-x
fsck.minix
118.04
KB
-rwxr-xr-x
fsck.msdos
53.94
KB
-rwxr-xr-x
fsck.vfat
53.94
KB
-rwxr-xr-x
fsck.xfs
1.92
KB
-rwxr-xr-x
fsfreeze
14.01
KB
-rwxr-xr-x
fstab-decode
6.09
KB
-rwxr-xr-x
fstrim
66.01
KB
-rwxr-xr-x
ftl_check
10.01
KB
-rwxr-xr-x
ftl_format
14.01
KB
-rwxr-xr-x
gdisk
194.26
KB
-rwxr-xr-x
genl
78.05
KB
-rwxr-xr-x
getcap
10.09
KB
-rwxr-xr-x
getpcaps
10.09
KB
-rwxr-xr-x
getty
59.15
KB
-rwxr-xr-x
groupadd
82.43
KB
-rwxr-xr-x
groupdel
78.25
KB
-rwxr-xr-x
groupmems
61.86
KB
-rwxr-xr-x
groupmod
86.34
KB
-rwxr-xr-x
grpck
57.8
KB
-rwxr-xr-x
grpconv
53.69
KB
-rwxr-xr-x
grpunconv
53.69
KB
-rwxr-xr-x
grub-install
1.07
MB
-rwxr-xr-x
grub-macbless
863.2
KB
-rwxr-xr-x
grub-mkconfig
8.54
KB
-rwxr-xr-x
grub-mkdevicemap
211.31
KB
-rwxr-xr-x
grub-probe
875.45
KB
-rwxr-xr-x
grub-reboot
4.73
KB
-rwxr-xr-x
grub-set-default
3.47
KB
-rwxr-xr-x
halt
944.84
KB
-rwxr-xr-x
hdparm
128.07
KB
-rwxr-xr-x
httxt2dbm
9.93
KB
-rwxr-xr-x
hwclock
90.06
KB
-rwxr-xr-x
iconvconfig
26.14
KB
-rwxr-xr-x
ifconfig
80.83
KB
-rwxr-xr-x
init
1.48
MB
-rwxr-xr-x
insmod
162.18
KB
-rwxr-xr-x
installkernel
2.58
KB
-rwxr-xr-x
integritysetup
51.97
KB
-rwxr-xr-x
invoke-rc.d
16.64
KB
-rwxr-xr-x
ip
600.15
KB
-rwxr-xr-x
ip6tables
92.71
KB
-rwxr-xr-x
ip6tables-apply
6.89
KB
-rwxr-xr-x
ip6tables-legacy
92.71
KB
-rwxr-xr-x
ip6tables-legacy-restore
92.71
KB
-rwxr-xr-x
ip6tables-legacy-save
92.71
KB
-rwxr-xr-x
ip6tables-nft
207
KB
-rwxr-xr-x
ip6tables-nft-restore
207
KB
-rwxr-xr-x
ip6tables-nft-save
207
KB
-rwxr-xr-x
ip6tables-restore
92.71
KB
-rwxr-xr-x
ip6tables-restore-translate
207
KB
-rwxr-xr-x
ip6tables-save
92.71
KB
-rwxr-xr-x
ip6tables-translate
207
KB
-rwxr-xr-x
ipmaddr
17.93
KB
-rwxr-xr-x
iptables
92.71
KB
-rwxr-xr-x
iptables-apply
6.89
KB
-rwxr-xr-x
iptables-legacy
92.71
KB
-rwxr-xr-x
iptables-legacy-restore
92.71
KB
-rwxr-xr-x
iptables-legacy-save
92.71
KB
-rwxr-xr-x
iptables-nft
207
KB
-rwxr-xr-x
iptables-nft-restore
207
KB
-rwxr-xr-x
iptables-nft-save
207
KB
-rwxr-xr-x
iptables-restore
92.71
KB
-rwxr-xr-x
iptables-restore-translate
207
KB
-rwxr-xr-x
iptables-save
92.71
KB
-rwxr-xr-x
iptables-translate
207
KB
-rwxr-xr-x
iptunnel
21.93
KB
-rwxr-xr-x
irqbalance
79.13
KB
-rwxr-xr-x
irqbalance-ui
34.18
KB
-rwxr-xr-x
iscsi-iname
13.93
KB
-rwxr-xr-x
iscsi_discovery
5.16
KB
-rwxr-xr-x
iscsiadm
369.8
KB
-rwxr-xr-x
iscsid
381.95
KB
-rwxr-xr-x
iscsistart
345.94
KB
-rwxr-xr-x
isosize
22.01
KB
-rwxr-xr-x
jffs2dump
26.01
KB
-rwxr-xr-x
jffs2reader
18.03
KB
-rwxr-xr-x
kbdrate
13.93
KB
-rwxr-xr-x
killall5
22.21
KB
-rwxr-xr-x
kpartx
41.95
KB
-rwxr-xr-x
ldattach
30.01
KB
-rwxr-xr-x
ldconfig
387
B
-rwxr-xr-x
ldconfig.real
602.84
KB
-rwxr-xr-x
locale-gen
4.3
KB
-rwxr-xr-x
logrotate
74.02
KB
-rwxr-xr-x
logsave
13.94
KB
-rwxr-xr-x
losetup
106.11
KB
-rwxr-xr-x
lsmod
162.18
KB
-rwxr-xr-x
lsmtd
66.6
KB
-rwxr-xr-x
luksformat
3.32
KB
-rwxr-xr-x
lvchange
2.74
MB
-rwxr-xr-x
lvconvert
2.74
MB
-rwxr-xr-x
lvcreate
2.74
MB
-rwxr-xr-x
lvdisplay
2.74
MB
-rwxr-xr-x
lvextend
2.74
MB
-rwxr-xr-x
lvm
2.74
MB
-rwxr-xr-x
lvmconfig
2.74
MB
-rwxr-xr-x
lvmdiskscan
2.74
MB
-rwxr-xr-x
lvmdump
10.07
KB
-rwxr-xr-x
lvmpolld
235.87
KB
-rwxr-xr-x
lvmsadc
2.74
MB
-rwxr-xr-x
lvmsar
2.74
MB
-rwxr-xr-x
lvreduce
2.74
MB
-rwxr-xr-x
lvremove
2.74
MB
-rwxr-xr-x
lvrename
2.74
MB
-rwxr-xr-x
lvresize
2.74
MB
-rwxr-xr-x
lvs
2.74
MB
-rwxr-xr-x
lvscan
2.74
MB
-rwxr-xr-x
make-bcache
18.01
KB
-rwxr-xr-x
make-ssl-cert
3.78
KB
-rwxr-xr-x
mdadm
565.05
KB
-rwxr-xr-x
mdmon
321.01
KB
-rwxr-xr-x
mii-tool
18.37
KB
-rwxr-xr-x
mkdosfs
34.35
KB
-rwxr-xr-x
mke2fs
130.35
KB
-rwxr-xr-x
mkfs
14.01
KB
-rwxr-xr-x
mkfs.bfs
30.01
KB
-rwxr-xr-x
mkfs.btrfs
451.22
KB
-rwxr-xr-x
mkfs.cramfs
33.94
KB
-rwxr-xr-x
mkfs.ext2
130.35
KB
-rwxr-xr-x
mkfs.ext3
130.35
KB
-rwxr-xr-x
mkfs.ext4
130.35
KB
-rwxr-xr-x
mkfs.fat
34.35
KB
-rwxr-xr-x
mkfs.jffs2
51.21
KB
-rwxr-xr-x
mkfs.minix
106.02
KB
-rwxr-xr-x
mkfs.msdos
34.35
KB
-rwxr-xr-x
mkfs.ntfs
82.05
KB
-rwxr-xr-x
mkfs.ubifs
86.01
KB
-rwxr-xr-x
mkfs.vfat
34.35
KB
-rwxr-xr-x
mkfs.xfs
342.14
KB
-rwxr-xr-x
mkhomedir_helper
17.94
KB
-rwxr-xr-x
mkinitramfs
11.55
KB
-rwxr-xr-x
mklost+found
10.09
KB
-rwxr-xr-x
mkntfs
82.05
KB
-rwxr-xr-x
mkswap
102.02
KB
-rwxr-xr-x
modinfo
162.18
KB
-rwxr-xr-x
modprobe
162.18
KB
-rwxr-xr-x
mount.fuse
9.99
KB
-rwxr-xr-x
mount.lowntfs-3g
106.63
KB
-rwxr-xr-x
mount.ntfs
142.66
KB
-rwxr-xr-x
mount.ntfs-3g
142.66
KB
-rwxr-xr-x
mpathpersist
26.82
KB
-rwxr-xr-x
mtd_debug
14.01
KB
-rwxr-xr-x
mtdinfo
46.01
KB
-rwxr-xr-x
mtdpart
10.01
KB
-rwxr-xr-x
multipath
29.93
KB
-rwxr-xr-x
multipathd
113.98
KB
-rwxr-xr-x
nameif
14.07
KB
-rwxr-xr-x
nanddump
42.02
KB
-rwxr-xr-x
nandtest
14.01
KB
-rwxr-xr-x
nandwrite
42.01
KB
-rwxr-xr-x
netplan
798
B
-rwxr-xr-x
newusers
90.26
KB
-rwxr-xr-x
nfnl_osf
14.09
KB
-rwxr-xr-x
nftl_format
14.02
KB
-rwxr-xr-x
nftldump
9.95
KB
-rwxr-xr-x
nologin
6.08
KB
-rwxr-xr-x
ntfsclone
54.05
KB
-rwxr-xr-x
ntfscp
38.04
KB
-rwxr-xr-x
ntfslabel
30.04
KB
-rwxr-xr-x
ntfsresize
70.05
KB
-rwxr-xr-x
ntfsundelete
50.04
KB
-rwxr-xr-x
on_ac_power
2.18
KB
-rwxr-xr-x
overlayroot-chroot
2.45
KB
-rwxr-xr-x
pam-auth-update
19.86
KB
-rwxr-xr-x
pam_extrausers_chkpwd
37.94
KB
-rwxr-sr-x
pam_extrausers_update
33.94
KB
-rwxr-xr-x
pam_getenv
2.82
KB
-rwxr-xr-x
pam_tally
13.95
KB
-rwxr-xr-x
pam_tally2
13.95
KB
-rwxr-xr-x
pam_timestamp_check
9.93
KB
-rwxr-xr-x
paperconfig
4.07
KB
-rwxr-xr-x
parted
78.2
KB
-rwxr-xr-x
partprobe
14.01
KB
-rwxr-xr-x
pdata_tools
1.2
MB
-rwxr-xr-x
phpdismod
7.11
KB
-rwxr-xr-x
phpenmod
7.11
KB
-rwxr-xr-x
phpquery
6.24
KB
-rwxr-xr-x
pivot_root
10.01
KB
-rwxr-xr-x
plipconfig
9.93
KB
-rwxr-xr-x
plymouthd
122.22
KB
-rwxr-xr-x
popcon-largest-unused
543
B
-rwxr-xr-x
popularity-contest
5.23
KB
-rwxr-xr-x
poweroff
944.84
KB
-rwxr-xr-x
pvchange
2.74
MB
-rwxr-xr-x
pvck
2.74
MB
-rwxr-xr-x
pvcreate
2.74
MB
-rwxr-xr-x
pvdisplay
2.74
MB
-rwxr-xr-x
pvmove
2.74
MB
-rwxr-xr-x
pvremove
2.74
MB
-rwxr-xr-x
pvresize
2.74
MB
-rwxr-xr-x
pvs
2.74
MB
-rwxr-xr-x
pvscan
2.74
MB
-rwxr-xr-x
pwck
53.82
KB
-rwxr-xr-x
pwconv
49.69
KB
-rwxr-xr-x
pwunconv
49.69
KB
-rwxr-xr-x
rarp
36.16
KB
-rwxr-xr-x
raw
14.01
KB
-rwxr-xr-x
readprofile
18.04
KB
-rwxr-xr-x
reboot
944.84
KB
-rwxr-xr-x
recv_image
21.93
KB
-rwxr-xr-x
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Code Editor : pam-auth-update
#!/usr/bin/perl -w # pam-auth-update: update /etc/pam.d/common-* from /usr/share/pam-configs # # Update the /etc/pam.d/common-* files based on the per-package profiles # provided in /usr/share/pam-configs/ taking into consideration user's # preferences (as determined via debconf prompting). # # Written by Steve Langasek <steve.langasek@canonical.com> # # Copyright (C) 2008 Canonical Ltd. # # This program is free software; you can redistribute it and/or modify # it under the terms of version 3 of the GNU General Public License as # published by the Free Software Foundation. # # # 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, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, # USA. use strict; use Debconf::Client::ConfModule ':all'; use IPC::Open2 'open2'; version('2.0'); my $capb=capb('backup escape'); my $inputdir = '/usr/share/pam-configs'; my $template = 'libpam-runtime/profiles'; my $errtemplate = 'libpam-runtime/conflicts'; my $overridetemplate = 'libpam-runtime/override'; my $blanktemplate = 'libpam-runtime/no_profiles_chosen'; my $titletemplate = 'libpam-runtime/title'; my $confdir = '/etc/pam.d'; my $savedir = '/var/lib/pam'; my (%profiles, @sorted, @enabled, @conflicts, @new, %removals, %to_enable); my $force = 0; my $package = 0; my $priority = 'high'; my %md5sums = ( 'auth' => ['8d4fe17e66ba25de16a117035d1396aa'], 'account' => ['3c0c362eaf3421848b679d63fd48c3fa'], 'password' => [ '50fce2113dfda83ac8bdd5a6e706caec', '4bd7610f2e85f8ddaef79c7db7cb49eb', '9ba753d0824276b44bcadfee1f87b6bc', ], 'session' => [ '240fb92986c885b327cdb21dd641da8c', '4a25673e8b36f1805219027d3be02cd2', '73144a2f4e609a922a51e301cd66a57e', ], 'session-noninteractive' => [ 'ad2b78ce1498dd637ef36469430b6ac6', 'a20e8df3469bfe25c13a3b39161b30f0', ], ); opendir(DIR, $inputdir) || die "could not open config directory: $!"; while (my $profile = readdir(DIR)) { next if ($profile eq '.' || $profile eq '..' || $profile =~ m/~$/ || $profile =~ m/^#.+#$/); %{$profiles{$profile}} = parse_pam_profile($inputdir . '/' . $profile); } closedir DIR; # use a '--force' arg to specify that /etc/pam.d should be overwritten; # used only on upgrades where the postinst has already determined that the # checksums match. Module packages other than libpam-runtime itself must # NEVER use this option! Document with big skullses and crossboneses! It # needs to be exposed for libpam-runtime because that's the package that # decides whether we have a pristine config to be converted, and knows # whether the version being upgraded from is one for which the conversion # should be done. while ($#ARGV >= 0) { my $opt = shift; if ($opt eq '--force') { $force = 1; } elsif ($opt eq '--package') { $package = 1; } elsif ($opt eq '--remove') { while ($#ARGV >= 0) { last if ($ARGV[0] =~ /^--/); $removals{shift @ARGV} = 1; } # --remove implies --package $package = 1 if (keys(%removals)); } elsif ($opt eq '--enable') { while ($#ARGV >= 0) { last if ($ARGV[0] =~ /^--/); $to_enable{shift @ARGV} = 1; } # --enable implies --package $package = 1 if (keys(%to_enable)); } } $priority = 'medium' if ($package); x_loadtemplatefile('/var/lib/dpkg/info/libpam-runtime.templates','libpam-runtime'); # always sort by priority, so we have consistency and don't have to # shuffle later @sorted = sort { $profiles{$b}->{'Priority'} <=> $profiles{$a}->{'Priority'} || $b cmp $a } keys(%profiles); # If we're being called for package removal, filter out those options here @sorted = grep { !$removals{$_} } @sorted; subst($template, 'profile_names', join(', ',@sorted)); subst($template, 'profiles', join(', ', map { $profiles{$_}->{'Name'} } @sorted)); my $diff = diff_profiles($confdir,$savedir); if ($diff) { @enabled = grep { !$removals{$_} } @{$diff->{'mods'}}; } else { @enabled = split(/, /,get($template)); } # find out what we've seen, so we can ignore those defaults my %seen; if (-e $savedir . '/seen') { open(SEEN,$savedir . '/seen') or die("open(${savedir}/seen) failed: $!"); while (<SEEN>) { chomp; $seen{$_} = 1; } close(SEEN); } # filter out any options that are no longer available for any reason @enabled = grep { $profiles{$_} } @enabled; # an empty module set is an error, so in that case grab all the defaults if (!@enabled) { %seen = (); $priority = 'high' unless ($force); } # add configs to enable push(@enabled, grep { $to_enable{$_} } @sorted); # add any previously-unseen configs push(@enabled, grep { $profiles{$_}->{'Default'} eq 'yes' && !$seen{$_} } @sorted); @enabled = sort { $profiles{$b}->{'Priority'} <=> $profiles{$a}->{'Priority'} || $b cmp $a } @enabled; my $prev = ''; @enabled = grep { $_ ne $prev && (($prev) = $_) } @enabled; # Do we have any new options to show? If not, we shouldn't reprompt the # user, at any priority level, unless explicitly called. @new = grep { !$seen{$_} } @sorted; settitle($titletemplate); # if diff_profiles() fails, and we weren't passed a 'force' argument # (because this isn't an upgrade from an old version, or the checksum # didn't match, or we're being called by some other module package), prompt # the user whether to override. If the user declines (the default), we # never again manage this config unless manually called with '--force'. if (!$diff && !$force) { input('high',$overridetemplate); go(); $force = 1 if (get($overridetemplate) eq 'true'); } if (!$diff && !$force) { print STDERR <<EOF; pam-auth-update: Local modifications to /etc/pam.d/common-*, not updating. pam-auth-update: Run pam-auth-update --force to override. EOF exit; } umask(0022); do { @conflicts = (); if (@new || !$package) { fset($template,'seen','false'); } set($template,join(', ', @enabled)); input($priority,$template); go(); @enabled = split(/, /, get($template)); # in case of conflicts, automatically unset the lower priority # item of each pair foreach my $elem (@enabled) { for (my $i=$#enabled; $i >= 0; $i--) { my $conflict = $enabled[$i]; if ($profiles{$elem}->{'Conflicts'}->{$conflict}) { splice(@enabled,$i,1); my $desc = $profiles{$elem}->{'Name'} . ', ' . $profiles{$conflict}->{'Name'}; push(@conflicts,$desc); } } } if (@conflicts) { subst($errtemplate, 'conflicts', join("\\n", @conflicts)); input('high',$errtemplate); } set($template, join(', ', @enabled)); if (!@enabled) { input('high',$blanktemplate); # we can only end up here by user error, but give them another # shot at selecting a correct config anyway. fset($template,'seen','false'); } } while (@conflicts || !@enabled); # the decision has been made about what configs to use, so even if # something fails after this, we shouldn't go munging the default # options again. Save the list of known configs to /var/lib/pam. open(SEEN,"> $savedir/seen") or die("open(${savedir}/seen) failed: $!"); for my $i (@sorted) { print SEEN "$i\n"; } close(SEEN) or die("close(${savedir}/seen) failed: $!"); # @enabled now contains our list of profiles to use for piecing together # a config # we have: # - templates into which we insert the specialness # - magic comments denoting the beginning and end of our managed block; # looking at only the functional config lines would potentially let us # handle more cases, at the expense of much greater complexity, so # pass on this at least for the first round # - a representation of the autogenerated config stored in /var/lib/pam, # that we can diff against in order to account for changed options or # manually dropped modules # - a hash describing the local modifications the user has made to the # config; these are always preserved unless manually overridden with # the --force option write_profiles(\%profiles, \@enabled, $confdir, $savedir, $diff, $force); # take a single line from a stock config, and merge it with the # information about local admin edits sub merge_one_line { my ($line,$diff,$count) = @_; my (@opts,$modline); my ($adds,$removes); $line =~ /^((\[[^]]+\]|\w+)\s+\S+)\s*(.*)/; @opts = split(/\s+/,$3); $modline = $1; $modline =~ s/end/$count/g; if ($diff) { my $mod = $modline; $mod =~ s/(\[[^0-9]*)[0-9]+(.*\])/$1$2/g; $adds = \%{$diff->{'add'}{$mod}}; $removes = \%{$diff->{'remove'}{$mod}}; } else { $adds = $removes = undef; } for (my $i = 0; $i <= $#opts; $i++) { if ($adds->{$opts[$i]}) { delete $adds->{$opts[$i]}; } if ($removes->{$opts[$i]}) { splice(@opts,$i,1); $i--; } } return $modline . " " . join(' ',@opts,sort keys(%{$adds})) . "\n"; } # return the lines for a given config name, type, and position in the stack sub lines_for_module_and_type { my ($profiles, $mod, $type, $modpos) = @_; if ($modpos == 0 && $profiles->{$mod}{$type . '-Initial'}) { return $profiles->{$mod}{$type . '-Initial'}; } return $profiles->{$mod}{$type}; } # create a single PAM config from the indicated template and selections, # writing to a new file sub create_from_template { my($template,$dest,$profiles,$enabled,$diff,$type) = @_; my $state = 0; my $uctype = ucfirst($type); $type =~ s/-noninteractive//; open(INPUT,$template) || return 0; open(OUTPUT,">$dest") || return 0; while (<INPUT>) { if ($state == 1) { if (/^# here's the fallback if no module succeeds/) { print OUTPUT; $state++; } next; } if ($state == 3) { if (/^# end of pam-auth-update config/) { print OUTPUT; $state++; } next; } print OUTPUT; my ($pattern,$val); if ($state == 0) { $pattern = '^# here are the per-package modules \(the "Primary" block\)'; $val = 'Primary'; } elsif ($state == 2) { $pattern = '^# and here are more per-package modules \(the "Additional" block\)'; $val = 'Additional'; } else { next; } if (/$pattern/) { my $i = 0; my $count = 0; # first we need to get a count of lines that we're # going to output, so we can fix up the jumps correctly for my $mod (@{$enabled}) { my $output; next if (!$profiles->{$mod}{$uctype . '-Type'}); next if $profiles->{$mod}{$uctype . '-Type'} ne $val; $output = lines_for_module_and_type($profiles, $mod, $uctype, $i++); # bypasses a perl warning about @_, sigh my @tmparr = split("\n+",$output); $count += @tmparr; } # in case anything tries to jump in the 'additional' # block, let's try not to jump off the stack... $count-- if ($val eq 'Additional'); # no primary block, so output a stock pam_permit line # to keep the stack intact if ($val eq 'Primary' && $count == 0) { print OUTPUT "$type\t[default=1]\t\t\tpam_permit.so\n"; } $i = 0; for my $mod (@{$enabled}) { my $output; my @output; next if (!$profiles->{$mod}{$uctype . '-Type'}); next if $profiles->{$mod}{$uctype . '-Type'} ne $val; $output = lines_for_module_and_type($profiles, $mod, $uctype, $i++); for my $line (split("\n",$output)) { $line = merge_one_line($line,$diff, $count); print OUTPUT "$type\t$line"; $count--; } } $state++; } } close(INPUT); close(OUTPUT) or die("close($dest) failed: $!"); if ($state < 4) { unlink($dest); return 0; } return 1; } # take a template file, strip out everything between the markers, and # return the md5sum of the remaining contents. Used for testing for # local modifications of the boilerplate. sub get_template_md5sum { my($template) = @_; my $state = 0; open(INPUT,$template) || return ''; my($md5sum_fd,$output_fd); my $pid = open2($md5sum_fd, $output_fd, 'md5sum'); return '' if (!$pid); while (<INPUT>) { if ($state == 1) { if (/^# here's the fallback if no module succeeds/) { print $output_fd $_; $state++; } next; } if ($state == 3) { if (/^# end of pam-auth-update config/) { print $output_fd $_; $state++; } next; } print $output_fd $_; my ($pattern,$val); if ($state == 0) { $pattern = '^# here are the per-package modules \(the "Primary" block\)'; } elsif ($state == 2) { $pattern = '^# and here are more per-package modules \(the "Additional" block\)'; } else { next; } if (/$pattern/) { $state++; } } close(INPUT); close($output_fd); my $md5sum = <$md5sum_fd>; close($md5sum_fd); waitpid $pid, 0; $md5sum = (split(/\s+/,$md5sum))[0]; return $md5sum; } # merge a set of module declarations into a set of new config files, # using the information returned from diff_profiles(). sub write_profiles { my($profiles,$enabled,$confdir,$savedir,$diff,$force) = @_; if (! -d $savedir) { mkdir($savedir); } # because we can't atomically replace both /var/lib/pam/$foo and # /etc/pam.d/common-$foo at the same time, take steps to make this # somewhat robust for my $type ('auth','account','password','session', 'session-noninteractive') { my $target = $confdir . '/common-' . $type; my $template = $target; my $dest = $template . '.pam-new'; my $diff = $diff; if ($diff) { $diff = \%{$diff->{$type}}; } # Detect if the template is unmodified, and if so, use # the version from /usr/share. Depends on knowing the # md5sums of the originals. my $md5sum = get_template_md5sum($template); for my $i (@{$md5sums{$type}}) { if ($md5sum eq $i) { $template = '/usr/share/pam/common-' . $type; last; } } # first, write out the new config if (!create_from_template($template,$dest,$profiles,$enabled, $diff,$type)) { if (!$force) { return 0; } $template = '/usr/share/pam/common-' . $type; if (!create_from_template($template,$dest,$profiles, $enabled,$diff,$type)) { return 0; } } # then write out the saved config if (!open(OUTPUT, "> $savedir/$type.new")) { unlink($dest); return 0; } my $i = 0; my $uctype = ucfirst($type); for my $mod (@{$enabled}) { my $output; next if (!$profiles->{$mod}{$uctype . '-Type'}); next if ($profiles->{$mod}{$uctype . '-Type'} eq 'Additional'); $output = lines_for_module_and_type($profiles, $mod, $uctype, $i++); if ($output) { print OUTPUT "Module: $mod\n"; print OUTPUT $output . "\n"; } } # no primary block, so output a stock pam_permit line if ($i == 0) { print OUTPUT "Module: null\n"; print OUTPUT "[default=1]\t\t\tpam_permit.so\n"; } $i = 0; for my $mod (@{$enabled}) { my $output; next if (!$profiles->{$mod}{$uctype . '-Type'}); next if ($profiles->{$mod}{$uctype . '-Type'} eq 'Primary'); $output = lines_for_module_and_type($profiles, $mod, $uctype, $i++); if ($output) { print OUTPUT "Module: $mod\n"; print OUTPUT $output . "\n"; } } close(OUTPUT) or die("close($dest) failed: $!"); # then do the renames, back-to-back # we have to use system because File::Copy is in # perl-modules, not perl-base if (-e $target && $force) { system('cp','-f',$target,$target . '.pam-old') == 0 or die("cp -f ${target} ${target}.pam.old failed"); } rename($dest,$target) or die("rename($dest, $target) failed: $!"); rename("$savedir/${type}.new","$savedir/$type") or die("rename(${savedir}/${type}.new, ${savedir}/${type}) failed: $!"); } # at the end of a successful write, reset the 'seen' flag and the # value of the debconf override question. fset($overridetemplate,'seen','false'); set($overridetemplate,'false'); } # reconcile the current config in /etc/pam.d with the saved ones in # /var/lib/pam; returns a hash of profile names and the corresponding # options that should be added/removed relative to the stock config. # returns false if any of the markers are missing that permit a merge, # or on any other failure. sub diff_profiles { my ($sourcedir,$savedir) = @_; my (%diff); @{$diff{'mods'}} = (); # Load the saved config from /var/lib/pam, then iterate through all # lines in the current config that are in the managed block. # If anything fails here, just return immediately since we then # have nothing to merge; instead, the caller will decide later # whether to force an overwrite. for my $type ('auth','account','password','session', 'session-noninteractive') { my (@saved,$modname); open(SAVED,$savedir . '/' . $type) || return 0; while (<SAVED>) { if (/^Module: (.*)/) { $modname = $1; next; } chomp; # trim out the destination of any jumps; this saves # us from having to re-parse everything just to fix # up the jump lengths, when changes to these will # already show up as inconsistencies elsewhere s/(\[[^0-9]*)[0-9]+(.*\])/$1$2/g; s/(\[.*)end(.*\])/$1$2/g; my (@temp) = ($modname,$_); push(@saved,\@temp); } close(SAVED); my $state = 0; my (@prev_opts,$curmod); my $realtype = $type; $realtype =~ s/-noninteractive//; open(CURRENT,$sourcedir . '/common-' . $type) || return 0; while (<CURRENT>) { if ($state == 0) { $state = 1 if (/^# here are the per-package modules \(the "Primary" block\)/); next; } if ($state == 1) { s/^$realtype\s+//; if (/^# here's the fallback if no module succeeds/) { $state = 2; next; } } if ($state == 2) { $state = 3 if (/^# and here are more per-package modules \(the "Additional" block\)/); next; } if ($state == 3) { last if (/^# end of pam-auth-update config/); s/^$realtype\s+//; } my $found = 0; my $curopts; while (!$found && $#saved >= 0) { my $line; ($modname,$line) = @{$saved[0]}; shift(@saved); $line =~ /^((\[[^]]+\]|\w+)\s+\S+)\s*(.*)/; @prev_opts = split(/\s+/,$3); $curmod = $1; # FIXME: the key isn't derived from the config # name, so collisions are possible if more # than one config references the same module $_ =~ s/(\[[^0-9]*)[0-9]+(.*\])/$1$2/g; # check if this is a match for the current line if ($_ =~ /^\Q$curmod\E\s*(.*)$/) { $found = 1; $curopts = $1; push(@{$diff{'mods'}},$modname); } } # there's a line in the live config that doesn't # correspond to anything from the saved config. # treat this as a failure; it's very error-prone # to decide what to do with an added line that # didn't come from a package. return 0 if (!$found); for my $opt (split(/\s+/,$curopts)) { my $found = 0; for (my $i = 0; $i <= $#prev_opts; $i++) { if ($prev_opts[$i] eq $opt) { $found = 1; splice(@prev_opts,$i,1); } } $diff{$type}{'add'}{$curmod}{$opt} = 1 if (!$found); } for my $opt (@prev_opts) { $diff{$type}{'remove'}{$curmod}{$opt} = 1; } } close(CURRENT); # we couldn't parse the config, so the merge fails return 0 if ($state < 3); } return \%diff; } # simple function to parse a provided config file, in pseudo-RFC822 # format, sub parse_pam_profile { my ($profile) = $_[0]; my $fieldname; my %profile; open(PROFILE, $profile) || die "could not read profile $profile: $!"; while (<PROFILE>) { if (/^(\S+):\s+(.*)\s*$/) { $fieldname = $1; # compatibility with the first implementation round; # "Auth-Final" is now just called "Auth" $fieldname =~ s/-Final$//; if ($fieldname eq 'Conflicts') { foreach my $elem (split(/, /, $2)) { $profile{'Conflicts'}->{$elem} = 1; } } else { $profile{$fieldname} = $2; } } else { chomp; s/^\s+//; s/\s+$//; $profile{$fieldname} .= "\n$_" if ($_); $profile{$fieldname} =~ s/^[\n\s]+//; } } close(PROFILE); if (!defined($profile{'Session-Interactive-Only'})) { $profile{'Session-noninteractive-Type'} = $profile{'Session-Type'}; $profile{'Session-noninteractive'} = $profile{'Session'}; $profile{'Session-noninteractive-Initial'} = $profile{'Session-Initial'}; } return %profile; }
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