| 1 | #!/usr/bin/perl
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| 2 | #
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| 3 |
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| 4 | use strict;
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| 5 |
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| 6 | use Getopt::Long;
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| 7 | use Cwd qw(abs_path);
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| 8 |
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| 9 | my $opt_help = 0;
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| 10 | my $opt_passwd_path = undef;
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| 11 | my $opt_group_path = undef;
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| 12 | my $opt_action = undef;
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| 13 | my $opt_type = undef;
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| 14 | my $opt_name = undef;
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| 15 | my $opt_member = undef;
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| 16 | my $opt_gid = 65534;# nogroup gid
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| 17 |
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| 18 | my $passwdfn = undef;
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| 19 | my $groupfn = undef;
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| 20 | my $memberfn = undef;
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| 21 | my $actionfn = undef;
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| 22 |
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| 23 | sub passwd_add($$$$$);
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| 24 | sub passwd_delete($$$$$);
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| 25 | sub group_add($$$$$);
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| 26 | sub group_delete($$$$$);
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| 27 | sub member_add($$$$$);
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| 28 | sub member_delete($$$$$);
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| 29 |
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| 30 | sub check_path($$);
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| 31 |
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| 32 | my $result = GetOptions(
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| 33 | 'help|h|?' => \$opt_help,
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| 34 | 'passwd_path=s' => \$opt_passwd_path,
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| 35 | 'group_path=s' => \$opt_group_path,
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| 36 | 'action=s' => \$opt_action,
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| 37 | 'type=s' => \$opt_type,
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| 38 | 'name=s' => \$opt_name,
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| 39 | 'member=s' => \$opt_member,
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| 40 | 'gid=i' => \$opt_gid
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| 41 | );
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| 42 |
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| 43 | sub usage($;$)
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| 44 | {
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| 45 | my ($ret, $msg) = @_;
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| 46 |
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| 47 | print $msg."\n\n" if defined($msg);
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| 48 |
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| 49 | print "usage:
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| 50 |
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| 51 | --help|-h|-? Show this help.
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| 52 |
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| 53 | --passwd_path <path> Path of the 'passwd' file.
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| 54 | --group_path <path> Path of the 'group' file.
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| 55 |
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| 56 | --type <type> 'passwd', 'group' and 'member' are supported.
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| 57 |
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| 58 | --action <action> 'add' or 'delete'.
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| 59 |
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| 60 | --name <name> The name of the object.
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| 61 |
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| 62 | --member <member> The name of the member.
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| 63 |
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| 64 | --gid <gid> Primary Group ID for new users.
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| 65 | ";
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| 66 | exit($ret);
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| 67 | }
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| 68 |
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| 69 | usage(1) if (not $result);
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| 70 |
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| 71 | usage(0) if ($opt_help);
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| 72 |
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| 73 | if (not defined($opt_action)) {
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| 74 | usage(1, "missing: --action [add|delete]");
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| 75 | }
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| 76 | if ($opt_action eq "add") {
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| 77 | $passwdfn = \&passwd_add;
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| 78 | $groupfn = \&group_add;
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| 79 | $memberfn = \&member_add;
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| 80 | } elsif ($opt_action eq "delete") {
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| 81 | $passwdfn = \&passwd_delete;
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| 82 | $groupfn = \&group_delete;
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| 83 | $memberfn = \&member_delete;
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| 84 | } else {
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| 85 | usage(1, "invalid: --action [add|delete]: '$opt_action'");
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| 86 | }
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| 87 |
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| 88 | if (not defined($opt_type)) {
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| 89 | usage(1, "missing: --type [passwd|group|member]");
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| 90 | }
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| 91 | if ($opt_type eq "member" and not defined($opt_member)) {
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| 92 | usage(1, "missing: --member <member>");
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| 93 | }
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| 94 | my $opt_fullpath_passwd;
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| 95 | my $opt_fullpath_group;
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| 96 | if ($opt_type eq "passwd") {
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| 97 | $actionfn = $passwdfn;
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| 98 | $opt_fullpath_passwd = check_path($opt_passwd_path, $opt_type);
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| 99 | } elsif ($opt_type eq "group") {
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| 100 | $actionfn = $groupfn;
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| 101 | $opt_fullpath_group = check_path($opt_group_path, $opt_type);
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| 102 | } elsif ($opt_type eq "member") {
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| 103 | $actionfn = $memberfn;
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| 104 | $opt_fullpath_passwd = check_path($opt_passwd_path, "passwd");
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| 105 | $opt_fullpath_group = check_path($opt_group_path, "group");
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| 106 | } else {
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| 107 | usage(1, "invalid: --type [passwd|group]: '$opt_type'")
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| 108 | }
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| 109 |
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| 110 | if (not defined($opt_name)) {
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| 111 | usage(1, "missing: --name <name>");
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| 112 | }
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| 113 | if ($opt_name eq "") {
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| 114 | usage(1, "invalid: --name <name>");
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| 115 | }
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| 116 |
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| 117 | exit $actionfn->($opt_fullpath_passwd, $opt_member, $opt_fullpath_group, $opt_name, $opt_gid);
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| 118 |
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| 119 | sub check_path($$)
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| 120 | {
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| 121 | my ($path,$type) = @_;
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| 122 |
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| 123 | if (not defined($path)) {
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| 124 | usage(1, "missing: --$type\_path <path>");
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| 125 | }
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| 126 | if ($path eq "" or $path eq "/") {
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| 127 | usage(1, "invalid: --$type\_path <path>: '$path'");
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| 128 | }
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| 129 | my $fullpath = abs_path($path);
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| 130 | if (not defined($fullpath)) {
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| 131 | usage(1, "invalid: --$type\_path <path>: '$path'");
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| 132 | }
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| 133 | return $fullpath;
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| 134 | }
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| 135 |
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| 136 | sub passwd_add_entry($$);
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| 137 |
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| 138 | sub passwd_load($)
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| 139 | {
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| 140 | my ($path) = @_;
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| 141 | my @lines;
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| 142 | my $passwd = undef;
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| 143 |
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| 144 | open(PWD, "<$path") or die("Unable to open '$path' for read");
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| 145 | @lines = <PWD>;
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| 146 | close(PWD);
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| 147 |
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| 148 | $passwd->{array} = ();
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| 149 | $passwd->{name} = {};
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| 150 | $passwd->{uid} = {};
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| 151 | $passwd->{path} = $path;
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| 152 |
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| 153 | foreach my $line (@lines) {
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| 154 | passwd_add_entry($passwd, $line);
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| 155 | }
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| 156 |
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| 157 | return $passwd;
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| 158 | }
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| 159 |
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| 160 | sub group_add_entry($$);
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| 161 |
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| 162 | sub group_load($)
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| 163 | {
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| 164 | my ($path) = @_;
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| 165 | my @lines;
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| 166 | my $group = undef;
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| 167 |
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| 168 | open(GROUP, "<$path") or die("Unable to open '$path' for read");
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| 169 | @lines = <GROUP>;
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| 170 | close(GROUP);
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| 171 |
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| 172 | $group->{array} = ();
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| 173 | $group->{name} = {};
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| 174 | $group->{gid} = {};
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| 175 | $group->{path} = $path;
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| 176 |
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| 177 | foreach my $line (@lines) {
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| 178 | group_add_entry($group, $line);
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| 179 | }
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| 180 |
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| 181 | return $group;
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| 182 | }
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| 183 |
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| 184 | sub passwd_lookup_name($$)
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| 185 | {
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| 186 | my ($passwd, $name) = @_;
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| 187 |
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| 188 | return undef unless defined($passwd->{name}{$name});
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| 189 |
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| 190 | return $passwd->{name}{$name};
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| 191 | }
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| 192 |
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| 193 | sub group_lookup_name($$)
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| 194 | {
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| 195 | my ($group, $name) = @_;
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| 196 |
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| 197 | return undef unless defined($group->{name}{$name});
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| 198 |
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| 199 | return $group->{name}{$name};
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| 200 | }
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| 201 |
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| 202 | sub passwd_lookup_uid($$)
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| 203 | {
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| 204 | my ($passwd, $uid) = @_;
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| 205 |
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| 206 | return undef unless defined($passwd->{uid}{$uid});
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| 207 |
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| 208 | return $passwd->{uid}{$uid};
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| 209 | }
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| 210 |
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| 211 | sub group_lookup_gid($$)
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| 212 | {
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| 213 | my ($group, $gid) = @_;
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| 214 |
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| 215 | return undef unless defined($group->{gid}{$gid});
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| 216 |
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| 217 | return $group->{gid}{$gid};
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| 218 | }
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| 219 |
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| 220 | sub passwd_get_free_uid($)
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| 221 | {
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| 222 | my ($passwd) = @_;
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| 223 | my $uid = 1000;
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| 224 |
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| 225 | while (passwd_lookup_uid($passwd, $uid)) {
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| 226 | $uid++;
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| 227 | }
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| 228 |
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| 229 | return $uid;
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| 230 | }
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| 231 |
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| 232 | sub group_get_free_gid($)
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| 233 | {
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| 234 | my ($group) = @_;
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| 235 | my $gid = 1000;
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| 236 |
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| 237 | while (group_lookup_gid($group, $gid)) {
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| 238 | $gid++;
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| 239 | }
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| 240 |
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| 241 | return $gid;
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| 242 | }
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| 243 |
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| 244 | sub passwd_add_entry($$)
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| 245 | {
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| 246 | my ($passwd, $str) = @_;
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| 247 |
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| 248 | chomp $str;
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| 249 | my @e = split(':', $str);
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| 250 |
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| 251 | push(@{$passwd->{array}}, \@e);
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| 252 | $passwd->{name}{$e[0]} = \@e;
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| 253 | $passwd->{uid}{$e[2]} = \@e;
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| 254 | }
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| 255 |
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| 256 | sub group_add_entry($$)
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| 257 | {
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| 258 | my ($group, $str) = @_;
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| 259 |
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| 260 | chomp $str;
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| 261 | my @e = split(':', $str);
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| 262 |
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| 263 | push(@{$group->{array}}, \@e);
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| 264 | $group->{name}{$e[0]} = \@e;
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| 265 | $group->{gid}{$e[2]} = \@e;
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| 266 | }
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| 267 |
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| 268 | sub passwd_remove_entry($$)
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| 269 | {
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| 270 | my ($passwd, $eref) = @_;
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| 271 |
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| 272 | for (my $i = 0; defined($passwd->{array}[$i]); $i++) {
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| 273 | if ($eref == $passwd->{array}[$i]) {
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| 274 | $passwd->{array}[$i] = undef;
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| 275 | }
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| 276 | }
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| 277 |
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| 278 | delete $passwd->{name}{${$eref}[0]};
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| 279 | delete $passwd->{uid}{${$eref}[2]};
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| 280 | }
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| 281 |
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| 282 | sub group_remove_entry($$)
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| 283 | {
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| 284 | my ($group, $eref) = @_;
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| 285 |
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| 286 | for (my $i = 0; defined($group->{array}[$i]); $i++) {
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| 287 | if ($eref == $group->{array}[$i]) {
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| 288 | $group->{array}[$i] = undef;
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| 289 | }
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| 290 | }
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| 291 |
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| 292 | delete $group->{name}{${$eref}[0]};
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| 293 | delete $group->{gid}{${$eref}[2]};
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| 294 | }
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| 295 |
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| 296 | sub group_add_member($$$)
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| 297 | {
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| 298 | my ($group, $eref, $username) = @_;
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| 299 |
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| 300 | my @members;
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| 301 | my $str = @$eref[3] || undef;
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| 302 | if ($str) {
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| 303 | @members = split(",", $str);
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| 304 | }
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| 305 |
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| 306 | foreach my $member (@members) {
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| 307 | if ($member and $member eq $username) {
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| 308 | die("account[$username] is already member of '@$eref[0]'");
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| 309 | }
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| 310 | }
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| 311 |
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| 312 | push(@members, $username);
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| 313 |
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| 314 | my $gwent = @$eref[0].":x:".@$eref[2].":".join(",", @members);
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| 315 |
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| 316 | group_remove_entry($group, $eref);
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| 317 |
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| 318 | group_add_entry($group, $gwent);
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| 319 | }
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| 320 |
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| 321 | sub group_delete_member($$$)
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| 322 | {
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| 323 | my ($group, $eref, $username) = @_;
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| 324 |
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| 325 | my @members = undef;
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| 326 | my $str = @$eref[3] || undef;
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| 327 | if ($str) {
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| 328 | @members = split(",", $str);
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| 329 | }
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| 330 | my @new_members;
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| 331 | my $removed = 0;
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| 332 |
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| 333 | foreach my $member (@members) {
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| 334 | if ($member and $member ne $username) {
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| 335 | push(@new_members, $member);
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| 336 | } else {
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| 337 | $removed = 1;
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| 338 | }
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| 339 | }
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| 340 |
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| 341 | if ($removed != 1) {
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| 342 | die("account[$username] is not member of '@$eref[0]'");
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| 343 | }
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| 344 |
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| 345 | my $gwent = @$eref[0].":x:".@$eref[2].":".join(",", @new_members);
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| 346 |
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| 347 | group_remove_entry($group, $eref);
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| 348 |
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| 349 | group_add_entry($group, $gwent);
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| 350 | }
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| 351 |
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| 352 | sub passwd_save($)
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| 353 | {
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| 354 | my ($passwd) = @_;
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| 355 | my @lines = ();
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| 356 | my $path = $passwd->{path};
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| 357 | my $tmppath = $path.$$;
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| 358 |
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| 359 | foreach my $eref (@{$passwd->{array}}) {
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| 360 | next unless defined($eref);
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| 361 |
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| 362 | my $line = join(':', @{$eref});
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| 363 | push(@lines, $line);
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| 364 | }
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| 365 |
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| 366 | open(PWD, ">$tmppath") or die("Unable to open '$tmppath' for write");
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| 367 | print PWD join("\n", @lines)."\n";
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| 368 | close(PWD);
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| 369 | rename($tmppath, $path) or die("Unable to rename $tmppath => $path");
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| 370 | }
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| 371 |
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| 372 | sub group_save($)
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| 373 | {
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| 374 | my ($group) = @_;
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| 375 | my @lines = ();
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| 376 | my $path = $group->{path};
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| 377 | my $tmppath = $path.$$;
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| 378 |
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| 379 | foreach my $eref (@{$group->{array}}) {
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| 380 | next unless defined($eref);
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| 381 |
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| 382 | my $line = join(':', @{$eref});
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| 383 | if (scalar(@{$eref}) == 3) {
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| 384 | $line .= ":";
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| 385 | }
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| 386 | push(@lines, $line);
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| 387 | }
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| 388 |
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| 389 | open(GROUP, ">$tmppath") or die("Unable to open '$tmppath' for write");
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| 390 | print GROUP join("\n", @lines)."\n";
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| 391 | close(GROUP);
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| 392 | rename($tmppath, $path) or die("Unable to rename $tmppath => $path");
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| 393 | }
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| 394 |
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| 395 | sub passwd_add($$$$$)
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| 396 | {
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| 397 | my ($path, $dummy, $dummy2, $name, $gid) = @_;
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| 398 |
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| 399 | #print "passwd_add: '$name' in '$path'\n";
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| 400 |
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| 401 | my $passwd = passwd_load($path);
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| 402 |
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| 403 | my $e = passwd_lookup_name($passwd, $name);
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| 404 | die("account[$name] already exists in '$path'") if defined($e);
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| 405 |
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| 406 | my $uid = passwd_get_free_uid($passwd);
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| 407 |
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| 408 | my $pwent = $name.":x:".$uid.":".$gid.":".$name." gecos:/nodir:/bin/false";
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| 409 |
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| 410 | passwd_add_entry($passwd, $pwent);
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| 411 |
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| 412 | passwd_save($passwd);
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| 413 |
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| 414 | return 0;
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| 415 | }
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| 416 |
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| 417 | sub passwd_delete($$$$$)
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| 418 | {
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| 419 | my ($path, $dummy, $dummy2, $name, $dummy3) = @_;
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| 420 |
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| 421 | #print "passwd_delete: '$name' in '$path'\n";
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| 422 |
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| 423 | my $passwd = passwd_load($path);
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| 424 |
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| 425 | my $e = passwd_lookup_name($passwd, $name);
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| 426 | die("account[$name] does not exists in '$path'") unless defined($e);
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| 427 |
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| 428 | passwd_remove_entry($passwd, $e);
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| 429 |
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| 430 | passwd_save($passwd);
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| 431 |
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| 432 | return 0;
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| 433 | }
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| 434 |
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| 435 | sub group_add($$$$$)
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| 436 | {
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| 437 | my ($dummy, $dummy2, $path, $name, $dummy3) = @_;
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| 438 |
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| 439 | #print "group_add: '$name' in '$path'\n";
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| 440 |
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| 441 | my $group = group_load($path);
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| 442 |
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| 443 | my $e = group_lookup_name($group, $name);
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| 444 | die("group[$name] already exists in '$path'") if defined($e);
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| 445 |
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| 446 | my $gid = group_get_free_gid($group);
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| 447 |
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| 448 | my $gwent = $name.":x:".$gid.":"."";
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| 449 |
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| 450 | group_add_entry($group, $gwent);
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| 451 |
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| 452 | group_save($group);
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| 453 |
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| 454 | #printf("%d\n", $gid);
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| 455 |
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| 456 | return 0;
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| 457 | }
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| 458 |
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| 459 | sub group_delete($$$$$)
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| 460 | {
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| 461 | my ($dummy, $dummy2, $path, $name, $dummy3) = @_;
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| 462 |
|
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| 463 | #print "group_delete: '$name' in '$path'\n";
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| 464 |
|
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| 465 | my $group = group_load($path);
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| 466 |
|
|---|
| 467 | my $e = group_lookup_name($group, $name);
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|---|
| 468 | die("group[$name] does not exists in '$path'") unless defined($e);
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|---|
| 469 |
|
|---|
| 470 | group_remove_entry($group, $e);
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| 471 |
|
|---|
| 472 | group_save($group);
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| 473 |
|
|---|
| 474 | return 0;
|
|---|
| 475 | }
|
|---|
| 476 |
|
|---|
| 477 | sub member_add($$$$$)
|
|---|
| 478 | {
|
|---|
| 479 | my ($passwd_path, $username, $group_path, $groupname, $dummy) = @_;
|
|---|
| 480 |
|
|---|
| 481 | #print "member_add: adding '$username' in '$passwd_path' to '$groupname' in '$group_path'\n";
|
|---|
| 482 |
|
|---|
| 483 | my $group = group_load($group_path);
|
|---|
| 484 |
|
|---|
| 485 | my $g = group_lookup_name($group, $groupname);
|
|---|
| 486 | die("group[$groupname] does not exists in '$group_path'") unless defined($g);
|
|---|
| 487 |
|
|---|
| 488 | my $passwd = passwd_load($passwd_path);
|
|---|
| 489 |
|
|---|
| 490 | my $u = passwd_lookup_name($passwd, $username);
|
|---|
| 491 | die("account[$username] does not exists in '$passwd_path'") unless defined($u);
|
|---|
| 492 |
|
|---|
| 493 | group_add_member($group, $g, $username);
|
|---|
| 494 |
|
|---|
| 495 | group_save($group);
|
|---|
| 496 |
|
|---|
| 497 | return 0;
|
|---|
| 498 | }
|
|---|
| 499 |
|
|---|
| 500 | sub member_delete($$$$$)
|
|---|
| 501 | {
|
|---|
| 502 | my ($passwd_path, $username, $group_path, $groupname, $dummy) = @_;
|
|---|
| 503 |
|
|---|
| 504 | #print "member_delete: removing '$username' in '$passwd_path' from '$groupname' in '$group_path'\n";
|
|---|
| 505 |
|
|---|
| 506 | my $group = group_load($group_path);
|
|---|
| 507 |
|
|---|
| 508 | my $g = group_lookup_name($group, $groupname);
|
|---|
| 509 | die("group[$groupname] does not exists in '$group_path'") unless defined($g);
|
|---|
| 510 |
|
|---|
| 511 | my $passwd = passwd_load($passwd_path);
|
|---|
| 512 |
|
|---|
| 513 | my $u = passwd_lookup_name($passwd, $username);
|
|---|
| 514 | die("account[$username] does not exists in '$passwd_path'") unless defined($u);
|
|---|
| 515 |
|
|---|
| 516 | group_delete_member($group, $g, $username);
|
|---|
| 517 |
|
|---|
| 518 | group_save($group);
|
|---|
| 519 |
|
|---|
| 520 | return 0;
|
|---|
| 521 | }
|
|---|
