# -*- 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): Terry Weissman <terry@mozilla.org>
#                 Dan Mosedale <dmose@mozilla.org>
#                 Joe Robins <jmrobins@tgix.com>
#                 Dave Miller <justdave@syndicomm.com>
#                 Christopher Aillon <christopher@aillon.com>
#                 Gervase Markham <gerv@gerv.net>
#                 Christian Reis <kiko@async.com.br>

# Contains some global routines used throughout the CGI scripts of Bugzilla.

use diagnostics;
use strict;
use lib ".";

# use Carp;                       # for confess

# commented out the following snippet of code. this tosses errors into the
# CGI if you are perl 5.6, and doesn't if you have perl 5.003. 
# We want to check for the existence of the LDAP modules here.
# eval "use Mozilla::LDAP::Conn";
# my $have_ldap = $@ ? 0 : 1;

# Shut up misguided -w warnings about "used only once".  For some reason,
# "use vars" chokes on me when I try it here.

sub CGI_pl_sillyness {
    my $zz;
    $zz = %::MFORM;
    $zz = %::dontchange;
}

use CGI::Carp qw(fatalsToBrowser);

require 'globals.pl';

use vars qw($template $vars);

# If Bugzilla is shut down, do not go any further, just display a message
# to the user about the downtime.  (do)editparams.cgi is exempted from
# this message, of course, since it needs to be available in order for
# the administrator to open Bugzilla back up.
if (Param("shutdownhtml") && $0 !~ m:[\\/](do)?editparams.cgi$:) {
    # The shut down message we are going to display to the user.
    $::vars->{'title'} = "Bugzilla は動作を停止しています";
    $::vars->{'h1'} = "Bugzilla は動作を停止しています";
    $::vars->{'message'} = Param("shutdownhtml");
    
    # Return the appropriate HTTP response headers.
    print "Content-Type: text/html; charset=EUC-JP\n\n";
    
    # Generate and return an HTML message about the downtime.
    $::template->process("global/message.html.tmpl", $::vars)
      || ThrowTemplateError($::template->error());
    exit;
}

# Implementations of several of the below were blatently stolen from CGI.pm,
# by Lincoln D. Stein.

# Get rid of all the %xx encoding and the like from the given URL.
sub url_decode {
    my ($todecode) = (@_);
    $todecode =~ tr/+/ /;       # pluses become spaces
    $todecode =~ s/%([0-9a-fA-F]{2})/pack("c",hex($1))/ge;
    return $todecode;
}

# Quotify a string, suitable for putting into a URL.
sub url_quote {
    my($toencode) = (@_);
    $toencode=~s/([^a-zA-Z0-9_\-.])/uc sprintf("%%%02x",ord($1))/eg;
    return $toencode;
}

sub ParseUrlString {
    my ($buffer, $f, $m) = (@_);
    undef %$f;
    undef %$m;

    my %isnull;

    # We must make sure that the CGI params remain tainted.
    # This means that if for some reason you want to make this code
    # use a regexp and $1, $2, ... (or use a helper function which does so)
    # you must |use re 'taint'| _and_ make sure that you don't run into
    # http://bugs.perl.org/perlbug.cgi?req=bug_id&bug_id=20020704.001
    my @args = split('&', $buffer);
    foreach my $arg (@args) {
        my ($name, $value) = split('=', $arg, 2);
        $value = '' if not defined $value;

        $name = url_decode($name);
        $value = url_decode($value);

        # 半角カタカナを全角に変換
        my $jcode = eval("require 'jcode.pl'");
        if ($jcode) {
            my $ic = &jcode::getcode(\$value);
            &jcode::convert(\$value, 'euc', $ic, 'z');
        }

        if ($value ne "") {
            if (defined $f->{$name}) {
                $f->{$name} .= $value;
                my $ref = $m->{$name};
                push @$ref, $value;
            } else {
                $f->{$name} = $value;
                $m->{$name} = [$value];
            }
        } else {
            $isnull{$name} = 1;
        }
    }
    if (%isnull) {
        foreach my $name (keys(%isnull)) {
            if (!defined $f->{$name}) {
                $f->{$name} = "";
                $m->{$name} = [];
            }
        }
    }
}

sub ProcessFormFields {
    my ($buffer) = (@_);
    return ParseUrlString($buffer, \%::FORM, \%::MFORM);
}

sub ProcessMultipartFormFields {
    my ($boundary) = @_;

    # Initialize variables that store whether or not we are parsing a header,
    # the name of the part we are parsing, and its value (which is incomplete
    # until we finish parsing the part).
    my $inheader = 1;
    my $fieldname = "";
    my $fieldvalue = "";

    # Read the input stream line by line and parse it into a series of parts,
    # each one containing a single form field and its value and each one
    # separated from the next by the value of $boundary.
    my $remaining = $ENV{"CONTENT_LENGTH"};
    while ($remaining > 0 && ($_ = <STDIN>)) {
        $remaining -= length($_);

        # If the current input line is a boundary line, save the previous
        # form value and reset the storage variables.
        if ($_ =~ m/^-*\Q$boundary\E/) {
            if ( $fieldname ) {
                chomp($fieldvalue);
                $fieldvalue =~ s/\r$//;
                if ( defined $::FORM{$fieldname} ) {
                    $::FORM{$fieldname} .= $fieldvalue;
                    push @{$::MFORM{$fieldname}}, $fieldvalue;
                } else {
                    $::FORM{$fieldname} = $fieldvalue;
                    $::MFORM{$fieldname} = [$fieldvalue];
                }
            }

            $inheader = 1;
            $fieldname = "";
            $fieldvalue = "";

        # If the current input line is a header line, look for a blank line
        # (meaning the end of the headers), a Content-Disposition header
        # (containing the field name and, for uploaded file parts, the file 
        # name), or a Content-Type header (containing the content type for 
        # file parts).
        } elsif ( $inheader ) {
            if (m/^\s*$/) {
                $inheader = 0;
            } elsif (m/^Content-Disposition:\s*form-data\s*;\s*name\s*=\s*"([^\"]+)"/i) {
                $fieldname = $1;
                if (m/;\s*filename\s*=\s*"([^\"]+)"/i) {
                    $::FILE{$fieldname}->{'filename'} = $1;
                }
            } elsif ( m|^Content-Type:\s*([^/]+/[^\s;]+)|i ) {
                $::FILE{$fieldname}->{'contenttype'} = $1;
            }

        # If the current input line is neither a boundary line nor a header,
        # it must be part of the field value, so append it to the value.
        } else {
          $fieldvalue .= $_;
        }
    }
}

# check and see if a given field exists, is non-empty, and is set to a 
# legal value.  assume a browser bug and abort appropriately if not.
# if $legalsRef is not passed, just check to make sure the value exists and 
# is non-NULL
sub CheckFormField (\%$;\@) {
    my ($formRef,                # a reference to the form to check (a hash)
        $fieldname,              # the fieldname to check
        $legalsRef               # (optional) ref to a list of legal values 
       ) = @_;

    if ( !defined $formRef->{$fieldname} ||
         trim($formRef->{$fieldname}) eq "" ||
         (defined($legalsRef) && 
          lsearch($legalsRef, $formRef->{$fieldname})<0) ){

        SendSQL("SELECT description FROM fielddefs WHERE name=" . SqlQuote($fieldname));
        my $result = FetchOneColumn();
        if ($result) {
            ThrowCodeError("A legal $result was not set.", undef, "abort");
        }
        else {
            ThrowCodeError("A legal $fieldname was not set.", undef, "abort");
        }
      }
}

# check and see if a given field is defined, and abort if not
sub CheckFormFieldDefined (\%$) {
    my ($formRef,                # a reference to the form to check (a hash)
        $fieldname,              # the fieldname to check
       ) = @_;

    if (!defined $formRef->{$fieldname}) {
          ThrowCodeError("$fieldname は定義されていません; " . 
                                                    Param("browserbugmessage"));
      }
}

sub ValidateBugID {
    # Validates and verifies a bug ID, making sure the number is a 
    # positive integer, that it represents an existing bug in the
    # database, and that the user is authorized to access that bug.
    # We detaint the number here, too

    $_[0] = trim($_[0]); # Allow whitespace arround the number
    detaint_natural($_[0])
      || DisplayError("バグ番号が正しくありません。もし QuickSearch を使用しているのなら、ブラウザの JavaScript を有効にする必要があります。この制限の修正については、<a href=\"http://bugzilla.mozilla.org/show_bug.cgi?id=70907\">こちら</a>を見てください。") 
      && exit;

    my ($id) = @_;

    # Get the values of the usergroupset and userid global variables
    # and write them to local variables for use within this function,
    # setting those local variables to the default value of zero if
    # the global variables are undefined.

    # First check that the bug exists
    SendSQL("SELECT bug_id FROM bugs WHERE bug_id = $id");

    FetchOneColumn()
      || DisplayError("Bug #$id は存在しません。")
        && exit;

    return if CanSeeBug($id, $::userid, $::usergroupset);

    # The user did not pass any of the authorization tests, which means they
    # are not authorized to see the bug.  Display an error and stop execution.
    # The error the user sees depends on whether or not they are logged in
    # (i.e. $::userid contains the user's positive integer ID).
    if ($::userid) {
        DisplayError("Bug #$id にアクセスする権限がありません。");
    } else {
        DisplayError(
          qq|Bug #$id にアクセスする権限がありません。まずは、適切な権限をもったアカウントに<a href="show_bug.cgi?id=$id&amp;GoAheadAndLogIn=1">ログイン</a>してください。|
        );
    }
    exit;

}

sub ValidateComment {
    # Make sure a comment is not too large (greater than 64K).
    
    my ($comment) = @_;
    
    if (defined($comment) && length($comment) > 65535) {
        DisplayError("コメントは 65,535 文字より長くは入力できません。");
        exit;
    }
}

sub html_quote {
    my ($var) = (@_);
    $var =~ s/\&/\&amp;/g;
    $var =~ s/</\&lt;/g;
    $var =~ s/>/\&gt;/g;
    $var =~ s/"/\&quot;/g;
    return $var;
}

sub value_quote {
    my ($var) = (@_);
    $var =~ s/\&/\&amp;/g;
    $var =~ s/</\&lt;/g;
    $var =~ s/>/\&gt;/g;
    $var =~ s/"/\&quot;/g;
    # See bug http://bugzilla.mozilla.org/show_bug.cgi?id=4928 for 
    # explanaion of why bugzilla does this linebreak substitution. 
    # This caused form submission problems in mozilla (bug 22983, 32000).
    $var =~ s/\r\n/\&#013;/g;
    $var =~ s/\n\r/\&#013;/g;
    $var =~ s/\r/\&#013;/g;
    $var =~ s/\n/\&#013;/g;
    return $var;
}

# Adds <link> elements for bug lists. These can be inserted into the header by
# using the "header_html" parameter to PutHeader, which inserts an arbitrary
# string into the header. This function is currently used only in
# template/en/default/bug/edit.html.tmpl.
sub navigation_links($) {
    my ($buglist) = @_;
    
    my $retval = "";
    
    # We need to be able to pass in a buglist because when you sort on a column
    # the bugs in the cookie you are given will still be in the old order.
    # If a buglist isn't passed, we just use the cookie.
    $buglist ||= $::COOKIE{"BUGLIST"};
    
    if (defined $buglist && $buglist ne "") {
    my @bugs = split(/:/, $buglist);
        
        if (defined $::FORM{'id'}) {
            # We are on an individual bug
            my $cur = lsearch(\@bugs, $::FORM{"id"});

            if ($cur > 0) {
                $retval .= "<link rel=\"First\" href=\"show_bug.cgi?id=$bugs[0]\" />\n";
                $retval .= "<link rel=\"Prev\" href=\"show_bug.cgi?id=$bugs[$cur - 1]\" />\n";
            } 
            if ($cur < $#bugs) {
                $retval .= "<link rel=\"Next\" href=\"show_bug.cgi?id=$bugs[$cur + 1]\" />\n";
                $retval .= "<link rel=\"Last\" href=\"show_bug.cgi?id=$bugs[$#bugs]\" />\n";
            }

            $retval .= "<link rel=\"Up\" href=\"buglist.cgi?regetlastlist=1\" />\n";
            $retval .= "<link rel=\"Contents\" href=\"buglist.cgi?regetlastlist=1\" />\n";
        } else {
            # We are on a bug list
            $retval .= "<link rel=\"First\" href=\"show_bug.cgi?id=$bugs[0]\" />\n";
            $retval .= "<link rel=\"Next\" href=\"show_bug.cgi?id=$bugs[0]\" />\n";
            $retval .= "<link rel=\"Last\" href=\"show_bug.cgi?id=$bugs[$#bugs]\" />\n";
        }
    }
    
    return $retval;
} 

$::CheckOptionValues = 1;

# This sub is still used in reports.cgi.
sub make_options {
    my ($src,$default,$isregexp) = (@_);
    my $last = "";
    my $popup = "";
    my $found = 0;
    $default = "" if !defined $default;

    if ($src) {
        foreach my $item (@$src) {
            if ($item eq "-blank-" || $item ne $last) {
                if ($item eq "-blank-") {
                    $item = "";
                }
                $last = $item;
                if ($isregexp ? $item =~ $default : $default eq $item) {
                    $popup .= "<OPTION SELECTED VALUE=\"$item\">$item\n";
                    $found = 1;
                } else {
                    $popup .= "<OPTION VALUE=\"$item\">$item\n";
                }
            }
        }
    }
    if (!$found && $default ne "") {
      if ( $::CheckOptionValues &&
           ($default ne $::dontchange) && ($default ne "-All-") &&
           ($default ne "DUPLICATE") ) {
        print "バグデータベースが壊れている可能性が検出されました。" . Param("maintainer") . " にメールして、何をしているときにこのメッセージが現れたか詳しく説明してください。ご協力ありがとうございます。\n";
        if (!$src) {
            $src = ["???null???"];
        }
        print "<pre>src = " . value_quote(join(' ', @$src)) . "\n";
        print "default = " . value_quote($default) . "</pre>";
        PutFooter();
#        confess "Gulp.";
        exit 0;
              
      } else {
        $popup .= "<OPTION SELECTED>$default\n";
      }
    }
    return $popup;
}

sub PasswordForLogin {
    my ($login) = (@_);
    SendSQL("select cryptpassword from profiles where login_name = " .
            SqlQuote($login));
    my $result = FetchOneColumn();
    if (!defined $result) {
        $result = "";
    }
    return $result;
}

sub quietly_check_login() {
    $::usergroupset = '0';
    my $loginok = 0;
    $::disabledreason = '';
    $::userid = 0;
    if (defined $::COOKIE{"Bugzilla_login"} &&
        defined $::COOKIE{"Bugzilla_logincookie"}) {
        ConnectToDatabase();
        SendSQL("SELECT profiles.userid, profiles.groupset, " .
                "profiles.login_name, " .
                "profiles.login_name = " .
                SqlQuote($::COOKIE{"Bugzilla_login"}) .
                " AND logincookies.ipaddr = " .
                SqlQuote($ENV{"REMOTE_ADDR"}) .
                ", profiles.disabledtext " .
                " FROM profiles, logincookies WHERE logincookies.cookie = " .
                SqlQuote($::COOKIE{"Bugzilla_logincookie"}) .
                " AND profiles.userid = logincookies.userid");
        my @row;
        if (@row = FetchSQLData()) {
            my ($userid, $groupset, $loginname, $ok, $disabledtext) = (@row);
            if ($ok) {
                if ($disabledtext eq '') {
                    $loginok = 1;
                    $::userid = $userid;
                    $::usergroupset = $groupset;
                    $::COOKIE{"Bugzilla_login"} = $loginname; # Makes sure case
                                                              # is in
                                                              # canonical form.
                    # We've just verified that this is ok
                    detaint_natural($::COOKIE{"Bugzilla_logincookie"});
                } else {
                    $::disabledreason = $disabledtext;
                }
            }
        }
    }
    # if 'who' is passed in, verify that it's a good value
    if ($::FORM{'who'}) {
        my $whoid = DBname_to_id($::FORM{'who'});
        delete $::FORM{'who'} unless $whoid;
    }
    if (!$loginok) {
        delete $::COOKIE{"Bugzilla_login"};
    }
                    
    $vars->{'user'} = GetUserInfo($::userid);
    
    return $loginok;
}

# Populate a hash with information about this user. 
sub GetUserInfo {
    my ($userid) = (@_);
    my %user;
    my @queries;
    my %groups;
    
    # No info if not logged in
    return \%user if ($userid == 0);
    
    $user{'login'} = $::COOKIE{"Bugzilla_login"};
    $user{'userid'} = $userid;
    
    SendSQL("SELECT mybugslink, realname, groupset, blessgroupset " . 
            "FROM profiles WHERE userid = $userid");
    ($user{'showmybugslink'}, $user{'realname'}, $user{'groupset'},
                                       $user{'blessgroupset'}) = FetchSQLData();

    SendSQL("SELECT name, query, linkinfooter FROM namedqueries " .
            "WHERE userid = $userid");
    while (MoreSQLData()) {
        my %query;
        ($query{'name'}, $query{'query'}, $query{'linkinfooter'}) = 
                                                                 FetchSQLData();
        push(@queries, \%query);    
    }

    $user{'queries'} = \@queries;

    SendSQL("select name, (bit & $user{'groupset'}) != 0 from groups");
    while (MoreSQLData()) {
        my ($name, $bit) = FetchSQLData();    
        $groups{$name} = $bit;
    }

    $user{'groups'} = \%groups;

    return \%user;
}

sub CheckEmailSyntax {
    my ($addr) = (@_);
    my $match = Param('emailregexp');
    if ($addr !~ /$match/ || $addr =~ /[\\\(\)<>&,;:"\[\] \t\r\n]/) {
        ThrowUserError("あなたの入力した メールアドレス (<b>" .
        html_quote($addr) . "</b>) は正しいメールアドレスの文法にしたがっていません。<br>" . Param('emailregexpdesc') . '<br> また、以下に示す特殊な文字のどれも含むべきではありません:<br> <tt>\ ( ) &amp; &lt; &gt; , ; : " [ ]</tt> または空白文字<br>メールアドレスの文法をチェックしてください。');
    }
}

sub MailPassword {
    my ($login, $password) = (@_);
    my $urlbase = Param("urlbase");
    my $template = Param("passwordmail");
    my $msg = PerformSubsts($template,
                            {"mailaddress" => $login . Param('emailsuffix'),
                             "login" => $login,
                             "password" => $password});
    ## メールの日本語化
    $_ = $msg;
    my ($mailhead, $mailbody) = /(.*?)\n\n(.*)/s;
    my $mime = eval("require 'mimew.pl'");
    if ($mime) {
        $mailhead = &::mimeencode($mailhead);
    }
    my $jcode = eval("require 'jcode.pl'");
    if ($jcode) {
        &jcode::euc2jis(\$mailbody);
    }
    $msg = $mailhead . "\n\n" . $mailbody;

    open SENDMAIL, "|/usr/lib/sendmail -t -i";
    print SENDMAIL $msg;
    close SENDMAIL;
}

sub confirm_login {
    my ($nexturl) = (@_);

# Uncommenting the next line can help debugging...
#    print "Content-type: text/plain\n\n";

    ConnectToDatabase();
    # I'm going to reorganize some of this stuff a bit.  Since we're adding
    # a second possible validation method (LDAP), we need to move some of this
    # to a later section.  -Joe Robins, 8/3/00
    my $enteredlogin = "";
    my $realcryptpwd = "";

    # If the form contains Bugzilla login and password fields, use Bugzilla's 
    # built-in authentication to authenticate the user (otherwise use LDAP below).
    if (defined $::FORM{"Bugzilla_login"} && defined $::FORM{"Bugzilla_password"}) {
        # Make sure the user's login name is a valid email address.
        $enteredlogin = $::FORM{"Bugzilla_login"};
        CheckEmailSyntax($enteredlogin);

        # Retrieve the user's ID and crypted password from the database.
        my $userid;
        SendSQL("SELECT userid, cryptpassword FROM profiles 
                 WHERE login_name = " . SqlQuote($enteredlogin));
        ($userid, $realcryptpwd) = FetchSQLData();

        # Make sure the user exists or throw an error (but do not admit it was a username
        # error to make it harder for a cracker to find account names by brute force).
        $userid
          || DisplayError("ユーザ名またはパスワードが正しくありません。")
          && exit;

        # If this is a new user, generate a password, insert a record
        # into the database, and email their password to them.
        if ( defined $::FORM{"PleaseMailAPassword"} && !$userid ) {
            # Ensure the new login is valid
            if(!ValidateNewUser($enteredlogin)) {
                ThrowUserError("そのアカウントは既に存在しています。");
            }

            my $password = InsertNewUser($enteredlogin, "");
            MailPassword($enteredlogin, $password);
            
            $vars->{'login'} = $enteredlogin;
            
            print "Content-Type: text/html; charset=EUC-JP\n\n";
            $template->process("account/created.html.tmpl", $vars)
              || ThrowTemplateError($template->error());                 
        }

        # Otherwise, authenticate the user.
        else {
            # Get the salt from the user's crypted password.
            my $salt = $realcryptpwd;

            # Using the salt, crypt the password the user entered.
            my $enteredCryptedPassword = crypt( $::FORM{"Bugzilla_password"} , $salt );

            # Make sure the passwords match or throw an error.
            ($enteredCryptedPassword eq $realcryptpwd)
              || DisplayError("ユーザ名またはパスワードが正しくありません。")
              && exit;

            # If the user has successfully logged in, delete any password tokens
            # lying around in the system for them.
            use Token;
            my $token = Token::HasPasswordToken($userid);
            while ( $token ) {
                Token::Cancel($token, "ユーザがログインしました");
                $token = Token::HasPasswordToken($userid);
            }
        }

     } elsif (Param("useLDAP") &&
              defined $::FORM{"LDAP_login"} &&
              defined $::FORM{"LDAP_password"}) {
       # If we're using LDAP for login, we've got an entirely different
       # set of things to check.

# see comment at top of file near eval
       # First, if we don't have the LDAP modules available to us, we can't
       # do this.
#       if(!$have_ldap) {
#         print "Content-type: text/html\n\n";
#         PutHeader("LDAP not enabled");
#         print "The necessary modules for LDAP login are not installed on ";
#         print "this machine.  Please send mail to ".Param("maintainer");
#         print " and notify him of this problem.\n";
#         PutFooter();
#         exit;
#       }

       # Next, we need to bind anonymously to the LDAP server.  This is
       # because we need to get the Distinguished Name of the user trying
       # to log in.  Some servers (such as iPlanet) allow you to have unique
       # uids spread out over a subtree of an area (such as "People"), so
       # just appending the Base DN to the uid isn't sufficient to get the
       # user's DN.  For servers which don't work this way, there will still
       # be no harm done.
       my $LDAPserver = Param("LDAPserver");
       if ($LDAPserver eq "") {
         print "Content-type: text/html; charset=EUC-JP\n\n";
         PutHeader("LDAP サーバが定義されていません");
         print "認証のための LDAP サーバが定義されていません。  ";
         print Param("maintainer")." にこの問題について知らせてあげてください。\n";
         PutFooter();
         exit;
       }

       my $LDAPport = "389";  #default LDAP port
       if($LDAPserver =~ /:/) {
         ($LDAPserver, $LDAPport) = split(":",$LDAPserver);
       }
       my $LDAPconn = new Mozilla::LDAP::Conn($LDAPserver,$LDAPport);
       if(!$LDAPconn) {
         print "Content-type: text/html; charset=EUC-JP\n\n";
         PutHeader("LDAP サーバと接続できません");
         print "LDAP サーバと接続できないため、ユーザ認証できません。";
         print Param("maintainer");
         print " にこの問題について知らせてあげてください。\n";
         PutFooter();
         exit;
       }

       # if no password was provided, then fail the authentication
       # while it may be valid to not have an LDAP password, when you
       # bind without a password (regardless of the binddn value), you
       # will get an anonymous bind.  I do not know of a way to determine
       # whether a bind is anonymous or not without making changes to the
       # LDAP access control settings
       if ( ! $::FORM{"LDAP_password"} ) {
         print "Content-type: text/html; charset=EUC-JP\n\n";
         PutHeader("ログインに失敗しました");
         print "パスワードが記入されていません。\n";
         print "<b>Back</b> を押して、やりなおしてください。\n";
         PutFooter();
         exit;
       }

       # We've got our anonymous bind;  let's look up this user.
       my $dnEntry = $LDAPconn->search(Param("LDAPBaseDN"),"subtree","uid=".$::FORM{"LDAP_login"});
       if(!$dnEntry) {
         print "Content-type: text/html; charset=EUC-JP\n\n";
         PutHeader("ログインに失敗しました");
         print "ユーザ名またはパスワードが正しくありません。\n";
         print "<b>Back</b> を押して、やりなおしてください。\n";
         PutFooter();
         exit;
       }

       # Now we get the DN from this search.  Once we've got that, we're
       # done with the anonymous bind, so we close it.
       my $userDN = $dnEntry->getDN;
       $LDAPconn->close;

       # Now we attempt to bind as the specified user.
       $LDAPconn = new Mozilla::LDAP::Conn($LDAPserver,$LDAPport,$userDN,$::FORM{"LDAP_password"});
       if(!$LDAPconn) {
         print "Content-type: text/html; charset=EUC-JP\n\n";
         PutHeader("ログインに失敗しました");
         print "ユーザ名またはパスワードが正しくありません。\n";
         print "<b>Back</b> を押して、やりなおしてください。\n";
         PutFooter();
         exit;
       }

       # And now we're going to repeat the search, so that we can get the
       # mail attribute for this user.
       my $userEntry = $LDAPconn->search(Param("LDAPBaseDN"),"subtree","uid=".$::FORM{"LDAP_login"});
       if(!$userEntry->exists(Param("LDAPmailattribute"))) {
         print "Content-type: text/html; charset=EUC-JP\n\n";
         PutHeader("LDAP の認証エラーです");
         print "LDAP サーバから ".Param("LDAPmailattribute");
         print " 属性を取得することができませんでした。";
         print Param("maintainer")." にこの問題について知らせてあげてください。\n";
         PutFooter();
         exit;
       }

       # Mozilla::LDAP::Entry->getValues returns an array for the attribute
       # requested, even if there's only one entry.
       $enteredlogin = ($userEntry->getValues(Param("LDAPmailattribute")))[0];

       # We're going to need the cryptpwd for this user from the database
       # so that we can set the cookie below, even though we're not going
       # to use it for authentication.
       $realcryptpwd = PasswordForLogin($enteredlogin);

       # If we don't get a result, then we've got a user who isn't in
       # Bugzilla's database yet, so we've got to add them.
       if($realcryptpwd eq "") {
         # We'll want the user's name for this.
         my $userRealName = ($userEntry->getValues("displayName"))[0];
         if($userRealName eq "") {
           $userRealName = ($userEntry->getValues("cn"))[0];
         }
         InsertNewUser($enteredlogin, $userRealName);
         $realcryptpwd = PasswordForLogin($enteredlogin);
       }
     } # end LDAP authentication

     # And now, if we've logged in via either method, then we need to set
     # the cookies.
     if($enteredlogin ne "") {
       $::COOKIE{"Bugzilla_login"} = $enteredlogin;
       SendSQL("insert into logincookies (userid,ipaddr) values (@{[DBNameToIdAndCheck($enteredlogin)]}, @{[SqlQuote($ENV{'REMOTE_ADDR'})]})");
       SendSQL("select LAST_INSERT_ID()");
       my $logincookie = FetchOneColumn();

       $::COOKIE{"Bugzilla_logincookie"} = $logincookie;
       my $cookiepath = Param("cookiepath");
       print "Set-Cookie: Bugzilla_login=$enteredlogin ; path=$cookiepath; expires=Sun, 30-Jun-2029 00:00:00 GMT\n";
       print "Set-Cookie: Bugzilla_logincookie=$logincookie ; path=$cookiepath; expires=Sun, 30-Jun-2029 00:00:00 GMT\n";
    }

    my $loginok = quietly_check_login();

    if ($loginok != 1) {
        if ($::disabledreason) {
            my $cookiepath = Param("cookiepath");
            print "Set-Cookie: Bugzilla_login= ; path=$cookiepath; expires=Sun, 30-Jun-80 00:00:00 GMT
Set-Cookie: Bugzilla_logincookie= ; path=$cookiepath; expires=Sun, 30-Jun-80 00:00:00 GMT
Content-type: text/html; charset=EUC-JP

";
            ThrowUserError($::disabledreason . "<hr>" .
            "あなたのアカウントは回復されるべきであると思われるのであれば、" .
            Param("maintainer") . " までメールして、アカウントが使用不可となった理由を説明してもらってください");
        }
        print "Content-type: text/html; charset=EUC-JP\n\n";
        PutHeader("ログイン");
        if(Param("useLDAP")) {
          print "続けるには、正しい LDAP ユーザ名とパスワードが必要です。\n";
        } else {
          print "続けるには、正しいメールアドレスとパスワードが必要です。\n";
        }
        if (!defined $nexturl || $nexturl eq "") {
            # Sets nexturl to be argv0, stripping everything up to and
            # including the last slash (or backslash on Windows).
            $0 =~ m:[^/\\]*$:;
            $nexturl = $&;
        }
        my $method = "POST";
# We always want to use POST here, because we're submitting a password and don't
# want to see it in the location bar in the browser in case a co-worker is looking
# over your shoulder.  If you have cookies off and need to bookmark the query, you
# can bookmark it from the screen asking for your password, and it should still
# work.  See http://bugzilla.mozilla.org/show_bug.cgi?id=15980
#        if (defined $ENV{"REQUEST_METHOD"} && length($::buffer) > 1) {
#            $method = $ENV{"REQUEST_METHOD"};
#        }
        print "
<FORM action=$nexturl method=$method>
<table>
<tr>";
        if(Param("useLDAP")) {
          print "
<td align=right><b>ユーザ名:</b></td>
<td><input size=10 name=LDAP_login></td>
</tr>
<tr>
<td align=right><b>パスワード:</b></td>
<td><input type=password size=10 name=LDAP_password></td>";
        } else {
          print "
<td align=right><b>メールアドレス:</b></td>
<td><input size=35 name=Bugzilla_login></td>
</tr>
<tr>
<td align=right><b>パスワード:</b></td>
<td><input type=password size=35 name=Bugzilla_password></td>";
        }
        print "
</tr>
</table>
";
        # Add all the form fields into the form as hidden fields
        # (except for Bugzilla_login and Bugzilla_password which we
        # already added as text fields above).
        foreach my $i ( grep( $_ !~ /^Bugzilla_/ , keys %::FORM ) ) {
          if (defined $::MFORM{$i} && scalar(@{$::MFORM{$i}}) > 1) {
            # This field has multiple values; add each one separately.
            foreach my $val (@{$::MFORM{$i}}) {
              print qq|<input type="hidden" name="$i" value="@{[value_quote($val)]}">\n|;
            }
          } else {
            # This field has a single value; add it.
            print qq|<input type="hidden" name="$i" value="@{[value_quote($::FORM{$i})]}">\n|;
          }
        }

        print qq|
          <input type="submit" name="GoAheadAndLogIn" value="ログイン">
          </form>
        |;

        # Allow the user to request a token to change their password (unless
        # we are using LDAP, in which case the user must use LDAP to change it).
        unless( Param("useLDAP") ) {
            print qq|
              <hr>
              <p>Bugzilla アカウントをまだ持っていないのであれば、<a href="createaccount.cgi">新規アカウントを作成</a>することができます。</p>
              <form method="get" action="token.cgi">
                <input type="hidden" name="a" value="reqpw">
                もしアカウントを持っているけれどパスワードを忘れた場合、以下にログイン名を入力して、パスワード変更リクエストを押してください。<br>
                <input size="35" name="loginname">
                <input type="submit" value="パスワード変更リクエスト">
              </form>
              <hr>
            |;
        }

        # This seems like as good as time as any to get rid of old
        # crufty junk in the logincookies table.  Get rid of any entry
        # that hasn't been used in a month.
        if ($::dbwritesallowed) {
            SendSQL("DELETE FROM logincookies " .
                    "WHERE TO_DAYS(NOW()) - TO_DAYS(lastused) > 30");
        }

        
        PutFooter();
        exit;
    }

    # Update the timestamp on our logincookie, so it'll keep on working.
    if ($::dbwritesallowed) {
        SendSQL("UPDATE logincookies SET lastused = null " .
                "WHERE cookie = $::COOKIE{'Bugzilla_logincookie'}");
    }
    return $::userid;
}

sub PutHeader {
    ($vars->{'title'}, $vars->{'h1'}, $vars->{'h2'}) = (@_);
     
    $::template->process("global/header.html.tmpl", $::vars)
      || ThrowTemplateError($::template->error());
}

sub PutFooter {
    $::template->process("global/footer.html.tmpl", $::vars)
      || ThrowTemplateError($::template->error());
}

###############################################################################
# Error handling
#
# If you are doing incremental output, set $vars->{'header_done'} once you've
# done the header.
###############################################################################

# DisplayError is deprecated. Use ThrowCodeError, ThrowUserError or 
# ThrowTemplateError instead.
sub DisplayError {
  ($vars->{'error'}, $vars->{'title'}) = (@_);
  $vars->{'title'} ||= "エラー";

  print "Content-type: text/html; charset=EUC-JP\n\n" if !$vars->{'header_done'};
  $template->process("global/user-error.html.tmpl", $vars)
    || ThrowTemplateError($template->error());   

  return 1;
}

# For "this shouldn't happen"-type places in the code.
# $vars->{'variables'} is a reference to a hash of useful debugging info.
sub ThrowCodeError {
  ($vars->{'error'}, $vars->{'variables'}, my $unlock_tables) = (@_);
  $vars->{'title'} = "コードエラー";

  SendSQL("UNLOCK TABLES") if $unlock_tables;
  
  # We may optionally log something to file here.
  
  print "Content-type: text/html; charset=EUC-JP\n\n" if !$vars->{'header_done'};
  $template->process("global/code-error.html.tmpl", $vars)
    || ThrowTemplateError($template->error());
    
  exit;
}

# For errors made by the user.
sub ThrowUserError {
  ($vars->{'error'}, $vars->{'title'}, my $unlock_tables) = (@_);
  $vars->{'title'} ||= "エラー";

  SendSQL("UNLOCK TABLES") if $unlock_tables;
  
  print "Content-type: text/html; charset=EUC-JP\n\n" if !$vars->{'header_done'};
  $template->process("global/user-error.html.tmpl", $vars)
    || ThrowTemplateError($template->error());
    
  exit;
}

# If the template system isn't working, we can't use a template.
# This should only be called if a template->process() fails.
# The Content-Type will already have been printed.
sub ThrowTemplateError {
    ($vars->{'error'}) = (@_);
    $vars->{'title'} = "テンプレートエラー";
    
    # Try a template first; but if this one fails too, fall back
    # on plain old print statements.
    if (!$template->process("global/code-error.html.tmpl", $vars)) {
        my $maintainer = Param('maintainer');
        my $error = html_quote($vars->{'error'});
        my $error2 = html_quote($template->error());
        print <<END;
        <tt>
          <p>
    Bugzilla は内部エラーによりダメージを受けました。このページを保存して、
    [% Param("maintainer") %] 宛に、このメッセージが現れたとき何をしていたのか
    詳しく教えてください。
          </p>
          <script> <!--
            document.write("<p>URL: " + document.location + "</p>");
          // -->
          </script>
          <p>Template->process() は 2回失敗しました。<br>
          最初のエラー : $error<br>
          2度目のエラー: $error2</p>
        </tt>
END
    }
    
    exit;  
}

sub CheckIfVotedConfirmed {
    my ($id, $who) = (@_);
    SendSQL("SELECT bugs.votes, bugs.bug_status, products.votestoconfirm, " .
            "       bugs.everconfirmed " .
            "FROM bugs, products " .
            "WHERE bugs.bug_id = $id AND products.product = bugs.product");
    my ($votes, $status, $votestoconfirm, $everconfirmed) = (FetchSQLData());
    if ($votes >= $votestoconfirm && $status eq $::unconfirmedstate) {
        SendSQL("UPDATE bugs SET bug_status = 'NEW', everconfirmed = 1 " .
                "WHERE bug_id = $id");
        my $fieldid = GetFieldID("bug_status");
        SendSQL("INSERT INTO bugs_activity " .
                "(bug_id,who,bug_when,fieldid,removed,added) VALUES " .
                "($id,$who,now(),$fieldid,'$::unconfirmedstate','NEW')");
        if (!$everconfirmed) {
            $fieldid = GetFieldID("everconfirmed");
            SendSQL("INSERT INTO bugs_activity " .
                    "(bug_id,who,bug_when,fieldid,removed,added) VALUES " .
                    "($id,$who,now(),$fieldid,'0','1')");
        }
        
        AppendComment($id, DBID_to_name($who),
                      "*** This bug has been confirmed by popular vote. ***");
                      
        $vars->{'type'} = "votes";
        $vars->{'id'} = $id;
        $vars->{'mail'} = "";
        open(PMAIL, "-|") or exec('./processmail', $id);
        $vars->{'mail'} .= $_ while <PMAIL>;
        close(PMAIL);
        
        $template->process("bug/process/results.html.tmpl", $vars)
          || ThrowTemplateError($template->error());
    }

}

sub GetBugActivity {
    my ($id, $starttime) = (@_);
    my $datepart = "";

    die "Invalid id: $id" unless $id=~/^\s*\d+\s*$/;

    if (defined $starttime) {
        $datepart = "and bugs_activity.bug_when > " . SqlQuote($starttime);
    }
    
    my $query = "
        SELECT IFNULL(fielddefs.description, bugs_activity.fieldid),
                bugs_activity.attach_id,
                bugs_activity.bug_when,
                bugs_activity.removed, bugs_activity.added,
                profiles.login_name
        FROM bugs_activity LEFT JOIN fielddefs ON 
                                     bugs_activity.fieldid = fielddefs.fieldid,
             profiles
        WHERE bugs_activity.bug_id = $id $datepart
              AND profiles.userid = bugs_activity.who
        ORDER BY bugs_activity.bug_when";

    SendSQL($query);
    
    my @operations;
    my $operation = {};
    my $changes = [];
    my $incomplete_data = 0;
    
    while (my ($field, $attachid, $when, $removed, $added, $who) 
                                                               = FetchSQLData())
    {
        my %change;
        
        # This gets replaced with a hyperlink in the template.
        $field =~ s/^Attachment// if $attachid;

        # Check for the results of an old Bugzilla data corruption bug
        $incomplete_data = 1 if ($added =~ /^\?/ || $removed =~ /^\?/);
        
        # An operation, done by 'who' at time 'when', has a number of
        # 'changes' associated with it.
        # If this is the start of a new operation, store the data from the
        # previous one, and set up the new one.
        if ($operation->{'who'} 
            && ($who ne $operation->{'who'} 
                || $when ne $operation->{'when'})) 
        {
            $operation->{'changes'} = $changes;
            push (@operations, $operation);
            
            # Create new empty anonymous data structures.
            $operation = {};
            $changes = [];
        }  
        
        $operation->{'who'} = $who;
        $operation->{'when'} = $when;            
        
        $change{'field'} = $field;
        $change{'attachid'} = $attachid;
        $change{'removed'} = $removed;
        $change{'added'} = $added;
        push (@$changes, \%change);
    }
    
    if ($operation->{'who'}) {
        $operation->{'changes'} = $changes;
        push (@operations, $operation);
    }
    
    return(\@operations, $incomplete_data);
}


############# Live code below here (that is, not subroutine defs) #############

$| = 1;

# Uncommenting this next line can help debugging.
# print "Content-type: text/html\n\nHello mom\n";

# foreach my $k (sort(keys %ENV)) {
#     print "$k $ENV{$k}<br>\n";
# }

if (defined $ENV{"REQUEST_METHOD"}) {
    if ($ENV{"REQUEST_METHOD"} eq "GET") {
        if (defined $ENV{"QUERY_STRING"}) {
            $::buffer = $ENV{"QUERY_STRING"};
        } else {
            $::buffer = "";
        }
        ProcessFormFields $::buffer;
    } else {
        if (exists($ENV{"CONTENT_TYPE"}) && $ENV{"CONTENT_TYPE"} =~
            m@multipart/form-data; boundary=\s*([^; ]+)@) {
            ProcessMultipartFormFields($1);
            $::buffer = "";
        } else {
            read STDIN, $::buffer, $ENV{"CONTENT_LENGTH"} ||
                die "Couldn't get form data";
            ProcessFormFields $::buffer;
        }
    }
}

if (defined $ENV{"HTTP_COOKIE"}) {
    # Don't trust anything which came in as a cookie
    use re 'taint';
    foreach my $pair (split(/;/, $ENV{"HTTP_COOKIE"})) {
        $pair = trim($pair);
        if ($pair =~ /^([^=]*)=(.*)$/) {
            $::COOKIE{$1} = $2;
        } else {
            $::COOKIE{$pair} = "";
        }
    }
}

1;
