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