#!/usr/bonsaitools/bin/perl -w
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Dave Miller <dave@intrec.com>

# Code derived from editowners.cgi and editusers.cgi

use diagnostics;
use strict;

require "CGI.pl";

confirm_login();

print "Content-type: text/html\n\n";

if (!UserInGroup("creategroups")) {
    PutHeader("Not Authorized","Edit Groups","","Not Authorized for this function!");
    print "<H1>Sorry, you aren't a member of the 'creategroups' group.</H1>\n";
    print "And so, you aren't allowed to edit the groups.\n";
    print "<p>\n";
    PutFooter();
    exit;
}

my $action  = trim($::FORM{action} || '');

# TestGroup: check if the group name exists
sub TestGroup ($)
{
    my $group = shift;

    # does the group exist?
    SendSQL("SELECT name
	     FROM groups
	     WHERE name=" . SqlQuote($group));
    return FetchOneColumn();
}

sub ShowError ($)
{
    my $msgtext = shift;
    print "<TABLE BGCOLOR=\"#FF0000\" CELLPADDING=15><TR><TD>";
    print "<B>$msgtext</B>";
    print "</TD></TR></TABLE><P>";
    return 1;
}

#
# Displays a text like "a.", "a or b.", "a, b or c.", "a, b, c or d."
#

sub PutTrailer (@)
{
    my (@links) = ("<a href=index.html>Back to the Main Bugs Page</a>", @_);

    my $count = $#links;
    my $num = 0;
    print "<P>\n";
    foreach (@links) {
	print $_;
	if ($num == $count) {
	    print ".\n";
	}
	elsif ($num == $count-1) {
	    print " or ";
	}
	else {
	    print ", ";
	}
	$num++;
    }
    PutFooter();
}

#
# action='' -> No action specified, get a list.
#

unless ($action) {
    PutHeader("Edit Groups","Edit Groups","This lets you edit the groups available to put users in.");

    print "<form method=post action=editgroups.cgi>\n";
    print "<table border=1>\n";
    print "<tr>";
    print "<th>Bit</th>";
    print "<th>Name</th>";
    print "<th>Description</th>";
    print "<th>User RegExp</th>";
    print "<th>Action</th>";
    print "</tr>\n";

    SendSQL("SELECT bit,name,description,userregexp " .
            "FROM groups " .
            "WHERE isbuggroup != 0 " .
            "ORDER BY bit");

    while (MoreSQLData()) {
        my ($bit, $name, $desc, $regexp) = FetchSQLData();
        print "<tr>\n";
        print "<td valign=middle>$bit</td>\n";
        print "<td><input size=20 name=\"name-$bit\" value=\"$name\">\n";
        print "<input type=hidden name=\"oldname-$bit\" value=\"$name\"></td>\n";
        print "<td><input size=40 name=\"desc-$bit\" value=\"$desc\">\n";
        print "<input type=hidden name=\"olddesc-$bit\" value=\"$desc\"></td>\n";
        print "<td><input size=30 name=\"regexp-$bit\" value=\"$regexp\">\n";
        print "<input type=hidden name=\"oldregexp-$bit\" value=\"$regexp\"></td>\n";
        print "<td align=center valign=middle><a href=\"editgroups.cgi?action=del&group=$bit\">Delete</a></td>\n";
        print "</tr>\n";
    }

    print "<tr>\n";
    print "<td colspan=4></td>\n";
    print "<td><a href=\"editgroups.cgi?action=add\">Add Group</a></td>\n";
    print "</tr>\n";
    print "</table>\n";
    print "<input type=hidden name=\"action\" value=\"update\">";
    print "<input type=submit value=\"Submit changes\">\n";
    print "</form>\n";

    print "<p>";
    print "<b>Name</b> is what is used with the UserInGroup() function in any
customized cgi files you write that use a given group.  It can also be used by
people submitting bugs by email to limit a bug to a certain groupset.  It
may not contain any spaces.<p>";
    print "<b>Description</b> is what will be shown in the bug reports to
members of the group where they can choose whether the bug will be restricted
to others in the same group.<p>";
    print "<b>User RegExp</b> is optional, and if filled in, will automatically
grant membership to this group to anyone creating a new account with an
email address that matches this regular expression.<p>";
    print "In addition, the following groups that determine user privileges
exist.  You can not edit these, but you need to know they are here, because
you can't duplicate the Names of any of them in your user groups either.<p>";

    print "<table border=1>\n";
    print "<tr>";
    print "<th>Bit</th>";
    print "<th>Name</th>";
    print "<th>Description</th>";
    print "</tr>\n";

    SendSQL("SELECT bit,name,description " .
            "FROM groups " .
            "WHERE isbuggroup = 0 " .
            "ORDER BY bit");

    while (MoreSQLData()) {
        my ($bit, $name, $desc) = FetchSQLData();
        print "<tr>\n";
        print "<td>$bit</td>\n";
        print "<td>$name</td>\n";
        print "<td>$desc</td>\n";
        print "</tr>\n";
    }

    print "</table><p>\n";

    PutFooter();
    exit;
}

#
# action='add' -> present form for parameters for new group
#
# (next action will be 'new')
#

if ($action eq 'add') {
    PutHeader("Add group");

    print "<FORM METHOD=POST ACTION=editgroups.cgi>\n";
    print "<TABLE BORDER=1 CELLPADDING=4 CELLSPACING=0><TR>\n";
    print "<th>New Name</th>";
    print "<th>New Description</th>";
    print "<th>New User RegExp</th>";
    print "</tr><tr>";
    print "<td><input size=20 name=\"name\"></td>\n";
    print "<td><input size=40 name=\"desc\"></td>\n";
    print "<td><input size=30 name=\"regexp\"></td>\n";
    print "</TR></TABLE>\n<HR>\n";
    print "<INPUT TYPE=SUBMIT VALUE=\"Add\">\n";
    print "<INPUT TYPE=HIDDEN NAME=\"action\" VALUE=\"new\">\n";
    print "</FORM>";

    print "<p>";
    print "<b>Name</b> is what is used with the UserInGroup() function in any
customized cgi files you write that use a given group.  It can also be used by
people submitting bugs by email to limit a bug to a certain groupset.  It
may not contain any spaces.<p>";
    print "<b>Description</b> is what will be shown in the bug reports to
members of the group where they can choose whether the bug will be restricted
to others in the same group.<p>";
    print "<b>User RegExp</b> is optional, and if filled in, will automatically
grant membership to this group to anyone creating a new account with an
email address that matches this regular expression.<p>";

    PutTrailer("<a href=editgroups.cgi>Back to the group list</a>");
    exit;
}



#
# action='new' -> add group entered in the 'action=add' screen
#

if ($action eq 'new') {
    PutHeader("Adding new group");

    # Cleanups and valididy checks
    my $name = trim($::FORM{name} || '');
    my $desc = trim($::FORM{desc} || '');
    my $regexp = trim($::FORM{regexp} || '');

    unless ($name) {
        ShowError("You must enter a name for the new group.<BR>" .
                  "Please click the <b>Back</b> button and try again.");
        PutFooter();
        exit;
    }
    unless ($desc) {
        ShowError("You must enter a description for the new group.<BR>" .
                  "Please click the <b>Back</b> button and try again.");
        PutFooter();
        exit;
    }
    if (TestGroup($name)) {
        ShowError("The group '" . $name . "' already exists.<BR>" .
                  "Please click the <b>Back</b> button and try again.");
        PutFooter();
	exit;
    }

    # Major hack for bit values...  perl can't handle 64-bit ints, so I can't
    # just do the math to get the next available bit number, gotta handle
    # them as strings...  also, we're actually only going to allow 63 bits
    # because that's all that opblessgroupset masks for (the high bit is off
    # to avoid signing issues).

    my @bitvals = ('1','2','4','8','16','32','64','128','256','512','1024',
                   '2048','4096','8192','16384','32768',

                   '65535','131072','262144','524288','1048576','2097152',
                   '4194304','8388608','16777216','33554432','67108864',
                   '134217728','268435456','536870912','1073741824',
                   '2147483648',

                   '4294967296','8589934592','17179869184','34359738368',
                   '68719476736','137438953472','274877906944',
                   '549755813888','1099511627776','2199023255552',
                   '4398046511104','8796093022208','17592186044416',
                   '35184372088832','70368744177664','140737488355328',

                   '281474976710656','562949953421312','1125899906842624',
                   '2251799813685248','4503599627370496','9007199254740992',
                   '18014398509481984','36028797018963968','72057594037927936',
                   '144115188075855872','288230376151711744',
                   '576460752303423488','1152921504606846976',
                   '2305843009213693958','4611686018427387916');

    # First the next available bit
    my $bit = "";
    foreach (@bitvals) {
        if ($bit eq "") {
            SendSQL("SELECT bit FROM groups WHERE bit=" . SqlQuote($_));
            if (!FetchOneColumn()) { $bit = $_; }
        }
    }
    if ($bit eq "") {
        ShowError("Sorry, you already have the maximum number of groups " .
                  "defined.<BR><BR>You must delete a group first before you " .
                  "can add any more.</B>");
        PutTrailer("<a href=editgroups.cgi>Back to the group list</a>");
        exit;
    }

    # Add the new group
    SendSQL("INSERT INTO groups ( " .
            "bit, name, description, isbuggroup, userregexp" .
            " ) VALUES ( " .
            $bit . "," .
            SqlQuote($name) . "," .
            SqlQuote($desc) . "," .
            "1," .
            SqlQuote($regexp) . ")" );

    print "OK, done.<p>\n";
    print "Your new group was assigned bit #$bit.<p>";
    PutTrailer("<a href=\"editgroups.cgi?action=add\">Add another group</a>",
               "<a href=\"editgroups.cgi\">Back to the group list</a>");
    exit;
}

#
# action='del' -> ask if user really wants to delete
#
# (next action would be 'delete')
#

if ($action eq 'del') {
    PutHeader("Delete group");
    my $bit = trim($::FORM{group} || '');
    unless ($bit) {
        ShowError("No group specified.<BR>" .
                  "Click the <b>Back</b> button and try again.");
        PutFooter();
        exit;
    }
    SendSQL("SELECT bit FROM groups WHERE bit=" . SqlQuote($bit));
    if (!FetchOneColumn()) {
        ShowError("That group doesn't exist.<BR>" .
                  "Click the <b>Back</b> button and try again.");
        PutFooter();
        exit;
    }
    SendSQL("SELECT name,description " .
            "FROM groups " .
            "WHERE bit = " . SqlQuote($bit));

    my ($name, $desc) = FetchSQLData();
    print "<table border=1>\n";
    print "<tr>";
    print "<th>Bit</th>";
    print "<th>Name</th>";
    print "<th>Description</th>";
    print "</tr>\n";
    print "<tr>\n";
    print "<td>$bit</td>\n";
    print "<td>$name</td>\n";
    print "<td>$desc</td>\n";
    print "</tr>\n";
    print "</table>\n";

    print "<FORM METHOD=POST ACTION=editgroups.cgi>\n";
    my $cantdelete = 0;
    SendSQL("SELECT login_name FROM profiles WHERE " .
            "(groupset & $bit) OR (blessgroupset & $bit)");
    if (!FetchOneColumn()) {} else {
       $cantdelete = 1;
       print "
<B>One or more users belong to this group. You cannot delete this group while
there are users in it.</B><BR>
<A HREF=\"editusers.cgi?action=list&query=" .
url_quote("(groupset & $bit) OR (blessgroupset & $bit)") . "\">Show me which users.</A> - <INPUT TYPE=CHECKBOX NAME=\"removeusers\">Remove all users from
this group for me<P>
";
    }
    SendSQL("SELECT bug_id FROM bugs WHERE (groupset & $bit)");
    if (MoreSQLData()) {
       $cantdelete = 1;
       my $buglist = "0";
       while (MoreSQLData()) {
         my ($bug) = FetchSQLData();
         $buglist .= "," . $bug;
       }
       print "
<B>One or more bug reports are visible only to this group.
You cannot delete this group while any bugs are using it.</B><BR>
<A HREF=\"buglist.cgi?bug_id=$buglist\">Show me which bugs.</A> -
<INPUT TYPE=CHECKBOX NAME=\"removebugs\">Remove all bugs from this group
restriction for me<BR>
<B>NOTE:</B> It's quite possible to make confidential bugs public by checking
this box.  It is <B>strongly</B> suggested that you review the bugs in this
group before checking the box.<P>
";
    }
    SendSQL("SELECT product FROM products WHERE product=" . SqlQuote($name));
    if (MoreSQLData()) {
       $cantdelete = 1;
       print "
<B>This group is tied to the <U>$name</U> product.
You cannot delete this group while it is tied to a product.</B><BR>
<INPUT TYPE=CHECKBOX NAME=\"unbind\">Delete this group anyway, and make the
<U>$name</U> product publicly visible.<BR>
";
    }

    print "<H2>Confirmation</H2>\n";
    print "<P>Do you really want to delete this group?\n";
    if ($cantdelete) {
      print "<BR><B>You must check all of the above boxes or correct the " .
            "indicated problems first before you can proceed.</B>";
    }
    print "<P><INPUT TYPE=SUBMIT VALUE=\"Yes, delete\">\n";
    print "<INPUT TYPE=HIDDEN NAME=\"action\" VALUE=\"delete\">\n";
    print "<INPUT TYPE=HIDDEN NAME=\"group\" VALUE=\"$bit\">\n";
    print "</FORM>";

    PutTrailer("<a href=editgroups.cgi>No, go back to the group list</a>");
    exit;
}

#
# action='delete' -> really delete the group
#

if ($action eq 'delete') {
    PutHeader("Deleting group");
    my $bit = trim($::FORM{group} || '');
    unless ($bit) {
        ShowError("No group specified.<BR>" .
                  "Click the <b>Back</b> button and try again.");
        PutFooter();
        exit;
    }
    SendSQL("SELECT name " .
            "FROM groups " .
            "WHERE bit = " . SqlQuote($bit));
    my ($name) = FetchSQLData();

    my $cantdelete = 0;
    my $opblessgroupset = '9223372036854775807'; # This is all 64 bits.

    SendSQL("SELECT userid FROM profiles " .
            "WHERE (groupset & $opblessgroupset)=$opblessgroupset");
    my @opusers = ();
    while (MoreSQLData()) {
      my ($userid) = FetchSQLData();
      push @opusers, $userid; # cache a list of the users with admin powers
    }
    SendSQL("SELECT login_name FROM profiles WHERE " .
            "(groupset & $bit)=$bit OR (blessgroupset & $bit)=$bit");
    if (FetchOneColumn()) {
      if (!defined $::FORM{'removeusers'}) {
        $cantdelete = 1;
      }
    }
    SendSQL("SELECT bug_id FROM bugs WHERE (groupset & $bit)=$bit");
    if (FetchOneColumn()) {
      if (!defined $::FORM{'removebugs'}) {
        $cantdelete = 1;
      }
    }
    SendSQL("SELECT product FROM products WHERE product=" . SqlQuote($name));
    if (FetchOneColumn()) {
      if (!defined $::FORM{'unbind'}) {
        $cantdelete = 1;
      }
    }

    if ($cantdelete == 1) {
      ShowError("This group cannot be deleted because there are child " .
          "records in the database which refer to it.  All child records " .
          "must be removed or altered to remove the reference to this " .
          "group before the group can be deleted.");
      print "<A HREF=\"editgroups.cgi?action=del&group=$bit\">" .
            "View the list of which records are affected</A><BR>";
      PutTrailer("<a href=editgroups.cgi>Back to group list</a>");
      exit;
    }

    SendSQL("SELECT login_name,groupset,blessgroupset FROM profiles WHERE " .
            "(groupset & $bit) OR (blessgroupset & $bit)");
    if (FetchOneColumn()) {
      SendSQL("UPDATE profiles SET groupset=(groupset-$bit) " .
              "WHERE (groupset & $bit)");
      print "All users have been removed from group $bit.<BR>";
      SendSQL("UPDATE profiles SET blessgroupset=(blessgroupset-$bit) " .
              "WHERE (blessgroupset & $bit)");
      print "All users with authority to add users to group $bit have " .
            "had that authority removed.<BR>";
    }
    SendSQL("SELECT bug_id FROM bugs WHERE (groupset & $bit)");
    if (FetchOneColumn()) {
      SendSQL("UPDATE bugs SET groupset=(groupset-$bit) " .
              "WHERE (groupset & $bit)");
      print "All bugs have had group bit $bit cleared.  Any of these " .
            "bugs that were not also in another group are now " .
            "publicly visible.<BR>";
    }
    SendSQL("DELETE FROM groups WHERE bit=$bit");
    print "<B>Group $bit has been deleted.</B><BR>";

    foreach my $userid (@opusers) {
      SendSQL("UPDATE profiles SET groupset=$opblessgroupset " .
              "WHERE userid=$userid");
      print "Group bits restored for " . DBID_to_name($userid) .
            " (maintainer)<BR>\n";
    }

    PutTrailer("<a href=editgroups.cgi>Back to group list</a>");
    exit;
}

#
# action='update' -> update the groups
#

if ($action eq 'update') {
    PutHeader("Updating groups");

    my $chgs = 0;

    foreach my $b (grep(/^name-\d*$/, keys %::FORM)) {
        if ($::FORM{$b}) {
            my $v = substr($b, 5);

# print "Old: '" . $::FORM{"oldname-$v"} . "', '" . $::FORM{"olddesc-$v"} .
#      "', '" . $::FORM{"oldregexp-$v"} . "'<br>";
# print "New: '" . $::FORM{"name-$v"} . "', '" . $::FORM{"desc-$v"} .
#      "', '" . $::FORM{"regexp-$v"} . "'<br>";

            if ($::FORM{"oldname-$v"} ne $::FORM{"name-$v"}) {
                $chgs = 1;
                SendSQL("SELECT name FROM groups WHERE name=" .
                         SqlQuote($::FORM{"name-$v"}));
                if (!FetchOneColumn()) {
                    SendSQL("UPDATE groups SET name=" .
                            SqlQuote($::FORM{"name-$v"}) .
                            " WHERE bit=" . SqlQuote($v));
                    print "Group $v name updated.<br>\n";
                } else {
                    ShowError("Duplicate name '" . $::FORM{"name-$v"} .
                              "' specified for group $v.<BR>" .
                              "Update of group $v name skipped.");
                }
            }
            if ($::FORM{"olddesc-$v"} ne $::FORM{"desc-$v"}) {
                $chgs = 1;
                SendSQL("SELECT description FROM groups WHERE description=" .
                         SqlQuote($::FORM{"desc-$v"}));
                if (!FetchOneColumn()) {
                    SendSQL("UPDATE groups SET description=" .
                            SqlQuote($::FORM{"desc-$v"}) .
                            " WHERE bit=" . SqlQuote($v));
                    print "Group $v description updated.<br>\n";
                } else {
                    ShowError("Duplicate description '" . $::FORM{"desc-$v"} .
                              "' specified for group $v.<BR>" .
                              "Update of group $v description skipped.");
                }
            }
            if ($::FORM{"oldregexp-$v"} ne $::FORM{"regexp-$v"}) {
                $chgs = 1;
                SendSQL("UPDATE groups SET userregexp=" .
                        SqlQuote($::FORM{"regexp-$v"}) .
                        " WHERE bit=" . SqlQuote($v));
                print "Group $v user regexp updated.<br>\n";
            }
        }
    }
    if (!$chgs) {
        print "You didn't change anything!<BR>\n";
        print "If you really meant it, hit the <B>Back</B> button and try again.<p>\n";
    } else {
        print "Done.<p>\n";
    }
    PutTrailer("<a href=editgroups.cgi>Back to the group list</a>");
    exit;
}

#
# No valid action found
#

PutHeader("Error");
print "I don't have a clue what you want.<BR>\n";

foreach ( sort keys %::FORM) {
    print "$_: $::FORM{$_}<BR>\n";
}

PutTrailer("<a href=editgroups.cgi>Try the group list</a>");