control-center - Mageia Control Center

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

# 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;


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

use CGI::Carp qw(fatalsToBrowser);

require 'globals.pl';

sub GeneratePersonInput {
    my ($field, $required, $def_value, $extraJavaScript) = (@_);
    $extraJavaScript ||= "";
    if ($extraJavaScript ne "") {
        $extraJavaScript = "onChange=\"$extraJavaScript\"";
    }
    return "<INPUT NAME=\"$field\" SIZE=32 $extraJavaScript VALUE=\"$def_value\">";
}

sub GeneratePeopleInput {
    my ($field, $def_value) = (@_);
    return "<INPUT NAME=\"$field\" SIZE=45 VALUE=\"$def_value\">";
}




# 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;
    my $remaining = $buffer;
    while ($remaining ne "") {
        my $item;
        if ($remaining =~ /^([^&]*)&(.*)$/) {
            $item = $1;
            $remaining = $2;
        } else {
            $item = $remaining;
            $remaining = "";
        }

        my $name;
        my $value;
        if ($item =~ /^([^=]*)=(.*)$/) {
            $name = $1;
            $value = url_decode($2);
        } else {
            $name = $item;
            $value = "";
        }
        if ($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) = (@_);
    $boundary =~ s/^-*//;
    my $remaining = $ENV{"CONTENT_LENGTH"};
    my $inheader = 1;
    my $itemname = "";
#    open(DEBUG, ">debug") || die "Can't open debugging thing";
#    print DEBUG "Boundary is '$boundary'\n";
    while ($remaining > 0 && ($_ = <STDIN>)) {
        $remaining -= length($_);
#        print DEBUG "< $_";
        if ($_ =~ m/^-*$boundary/) {
#            print DEBUG "Entered header\n";
            $inheader = 1;
            $itemname = "";
            next;
        }

        if ($inheader) {
            if (m/^\s*$/) {
                $inheader = 0;
#                print DEBUG "left header\n";
                $::FORM{$itemname} = "";
            }
            if (m/^Content-Disposition:\s*form-data\s*;\s*name\s*=\s*"([^\"]+)"/i) {
                $itemname = $1;
#                print DEBUG "Found itemname $itemname\n";
                if (m/;\s*filename\s*=\s*"([^\"]+)"/i) {
                    $::FILENAME{$itemname} = $1;
                }
            }
            
            next;
        }
        $::FORM{$itemname} .= $_;
    }
    delete $::FORM{""};
    # Get rid of trailing newlines.
    foreach my $i (keys %::FORM) {
        chomp($::FORM{$i});
        $::FORM{$i} =~ s/\r$//;
    }
}


# 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) {
            PuntTryAgain("A legal $result was not set.");
        }
        else {
            PuntTryAgain("A legal $fieldname was not set.");
            print Param("browserbugmessage");
        }
        PutFooter();
        exit 0;
      }
}

# 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} ) {
        print "$fieldname was not defined; ";
        print Param("browserbugmessage");
        PutFooter();
        exit 0;
      }
}

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.

    my ($id) = @_;

    # Make sure the bug number is a positive integer.
    # Whitespace can be ignored because the SQL server will ignore it.
    $id =~ /^\s*([1-9][0-9]*)\s*$/
      || DisplayError("The bug number is invalid. If you are trying to use " .
                      "QuickSearch, you need to enable JavaScript in your " .
                      "browser. To help us fix this limitation, look " .
                      "<a href=\"http://bugzilla.mozilla.org/show_bug.cgi?id=70907\">here</a>.") 
      && exit;

    # 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 does not exist.")
        && 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("You are not authorized to access bug #$id.");
    } else {
        DisplayError(
          qq|You are not authorized to access bug #$id.  To see this bug, you
          must first <a href="show_bug.cgi?id=$id&amp;GoAheadAndLogIn=1">log in 
          to an account</a> with the appropriate permissions.|
        );
    }
    exit;

}

# check and see if a given string actually represents a positive
# integer, and abort if not.
# 
sub CheckPosInt($) {
    my ($number) = @_;              # the fieldname to check

    if ( $number !~ /^[1-9][0-9]*$/ ) {
        print "Received string \"$number\" when positive integer expected; ";
        print Param("browserbugmessage");
        PutFooter();
        exit 0;
      }
}

sub FormData {
    my ($field) = (@_);
    return $::FORM{$field};
}

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

sub navigation_header {
    if (defined $::COOKIE{"BUGLIST"} && $::COOKIE{"BUGLIST"} ne "" &&
        defined $::FORM{'id'}) {
        my @bugs = split(/:/, $::COOKIE{"BUGLIST"});
        my $cur = lsearch(\@bugs, $::FORM{"id"});
        print "<B>Bug List:</B> (@{[$cur + 1]} of @{[$#bugs + 1]})\n";
        print "<A HREF=\"show_bug.cgi?id=$bugs[0]\">First</A>\n";
        print "<A HREF=\"show_bug.cgi?id=$bugs[$#bugs]\">Last</A>\n";
        if ($cur > 0) {
            print "<A HREF=\"show_bug.cgi?id=$bugs[$cur - 1]\">Prev</A>\n";
        } else {
            print "<I><FONT COLOR=\#777777>Prev</FONT></I>\n";
        }
        if ($cur < $#bugs) {
            $::next_bug = $bugs[$cur + 1];
            print "<A HREF=\"show_bug.cgi?id=$::next_bug\">Next</A>\n";
        } else {
            print "<I><FONT COLOR=\#777777>Next</FONT></I>\n";
        }
        print qq{&nbsp;&nbsp;<A HREF="buglist.cgi?regetlastlist=1">Show list</A>\n};
    }
    print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A HREF=query.cgi>Query page</A>\n";
    print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A HREF=enter_bug.cgi>Enter new bug</A>\n"
}

# Adds <link> elements for bug lists. These can be inserted into the header by
# (ab)using the "jscript" parameter to PutHeader, which inserts an arbitrary
# string into the header. This function is modelled on the one above.
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;
} 

sub make_checkboxes {
    my ($src,$default,$isregexp,$name) = (@_);
    my $last = "";
    my $capitalized = "";
    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;
                $capitalized = $item;
                $capitalized =~ tr/A-Z/a-z/;
                $capitalized =~ s/^(.?)(.*)/\u$1$2/;
                if ($isregexp ? $item =~ $default : $default eq $item) {
                    $popup .= "<INPUT NAME=$name TYPE=CHECKBOX VALUE=\"$item\" CHECKED>$capitalized<br>";
                    $found = 1;
                } else {
                    $popup .= "<INPUT NAME=$name TYPE=CHECKBOX VALUE=\"$item\">$capitalized<br>";
                }
            }
        }
    }
    if (!$found && $default ne "") {
        $popup .= "<INPUT NAME=$name TYPE=CHECKBOX CHECKED>$default";
    }
    return $popup;
}

#
# make_selection_widget: creates an HTML selection widget from a list of text strings.
# $groupname is the name of the setting (form value) that this widget will control
# $src is the list of options
# you can specify a $default value which is either a string or a regex pattern to match to
#    identify the default value
# $capitalize lets you optionally capitalize the option strings; the default is the value
#    of Param("capitalizelists")
# $multiple is 1 if several options are selectable (default), 0 otherwise.
# $size is used for lists to control how many items are shown. The default is 7. A list of
#    size 1 becomes a popup menu.
# $preferLists is 1 if selection lists should be used in favor of radio buttons and
#    checkboxes, and 0 otherwise. The default is the value of Param("preferlists").
#
# The actual widget generated depends on the parameter settings:
# 
#        MULTIPLE     PREFERLISTS    SIZE     RESULT
#       0 (single)        0           =1      Popup Menu (normal for list of size 1)
#       0 (single)        0           >1      Radio buttons
#       0 (single)        1           =1      Popup Menu (normal for list of size 1)
#       0 (single)        1           n>1     List of size n, single selection
#       1 (multi)         0           n/a     Check boxes; size ignored
#       1 (multi)         1           n/a     List of size n, multiple selection, of size n
#
sub make_selection_widget {
    my ($groupname,$src,$default,$isregexp,$multiple, $size, $capitalize, $preferLists) = (@_);
    my $last = "";
    my $popup = "";
    my $found = 0;
    my $displaytext = "";
    $groupname = "" if !defined $groupname;
    $default = "" if !defined $default;
    $capitalize = Param("capitalizelists") if !defined $capitalize;
    $multiple = 1 if !defined $multiple;
    $preferLists = Param("preferlists") if !defined $preferLists;
    $size = 7 if !defined $size;
    my $type = "LIST";
    if (!$preferLists) {
        if ($multiple) {
            $type = "CHECKBOX";
        } else {
            if ($size > 1) {
                $type = "RADIO";
            }
        }
    }

    if ($type eq "LIST") {
        $popup .= "<SELECT NAME=\"$groupname\"";
        if ($multiple) {
            $popup .= " MULTIPLE";
        }
        $popup .= " SIZE=$size>\n";
    }
    if ($src) {
        foreach my $item (@$src) {
            if ($item eq "-blank-" || $item ne $last) {
                if ($item eq "-blank-") {
                    $item = "";
                }
                $last = $item;
                $displaytext = $item;
                if ($capitalize) {
                    $displaytext =~ tr/A-Z/a-z/;
                    $displaytext =~ s/^(.?)(.*)/\u$1$2/;
                }   

                if ($isregexp ? $item =~ $default : $default eq $item) {
                    if ($type eq "CHECKBOX") {
                        $popup .= "<INPUT NAME=$groupname type=checkbox VALUE=\"$item\" CHECKED>$displaytext<br>";
                    } elsif ($type eq "RADIO") {
                        $popup .= "<INPUT NAME=$groupname type=radio VALUE=\"$item\" CHECKED>$displaytext<br>";
                    } else {
                        $popup .= "<OPTION SELECTED VALUE=\"$item\">$displaytext\n";
                    }
                    $found = 1;
                } else {
                    if ($type eq "CHECKBOX") {
                        $popup .= "<INPUT NAME=$groupname type=checkbox VALUE=\"$item\">$displaytext<br>";
                    } elsif ($type eq "RADIO") {
                        $popup .= "<INPUT NAME=$groupname type=radio VALUE=\"$item\">$displaytext<br>";
                    } else {
                        $popup .= "<OPTION VALUE=\"$item\">$displaytext";
                    }
                }
            }
        }
    }
    if (!$found && $default ne "") {
        if ($type eq "CHECKBOX") {
            $popup .= "<INPUT NAME=$groupname type=checkbox CHECKED>$default";
        } elsif ($type eq "RADIO") {
            $popup .= "<INPUT NAME=$groupname type=radio checked>$default";
        } else {
            $popup .= "<OPTION SELECTED>$default\n";
        }
    }
    if ($type eq "LIST") {
        $popup .= "</SELECT>";
    }
    return $popup;
}


$::CheckOptionValues = 1;

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 ( Param("strictvaluechecks") && $::CheckOptionValues &&
           ($default ne $::dontchange) && ($default ne "-All-") &&
           ($default ne "DUPLICATE") ) {
        print "Possible bug database corruption has been detected.  " .
              "Please send mail to " . Param("maintainer") . " with " .
              "details of what you were doing when this message " . 
              "appeared.  Thank you.\n";
        if (!$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 make_popup {
    my ($name,$src,$default,$listtype,$onchange) = (@_);
    my $popup = "<SELECT NAME=$name";
    if ($listtype > 0) {
        $popup .= " SIZE=5";
        if ($listtype == 2) {
            $popup .= " MULTIPLE";
        }
    }
    if (defined $onchange && $onchange ne "") {
        $popup .= " onchange=$onchange";
    }
    $popup .= ">" . make_options($src, $default,
                                 ($listtype == 2 && $default ne ""));
    $popup .= "</SELECT>";
    return $popup;
}


sub BuildPulldown {
    my ($name, $valuelist, $default) = (@_);

    my $entry = qq{<SELECT NAME="$name">};
    foreach my $i (@$valuelist) {
        my ($tag, $desc) = (@$i);
        my $selectpart = "";
        if ($tag eq $default) {
            $selectpart = " SELECTED";
        }
        if (!defined $desc) {
            $desc = $tag;
        }
        $entry .= qq{<OPTION$selectpart VALUE="$tag">$desc\n};
    }
    $entry .= qq{</SELECT>};
    return $entry;
}




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();
        if (!defined $ENV{'REMOTE_HOST'}) {
            $ENV{'REMOTE_HOST'} = $ENV{'REMOTE_ADDR'};
        }
        SendSQL("SELECT profiles.userid, profiles.groupset, " .
                "profiles.login_name, " .
                "profiles.login_name = " .
                SqlQuote($::COOKIE{"Bugzilla_login"}) .
                " AND profiles.cryptpassword = logincookies.cryptpassword " .
                "AND logincookies.hostname = " .
                SqlQuote($ENV{"REMOTE_HOST"}) .
                ", profiles.disabledtext " .
                " FROM profiles, logincookies WHERE logincookies.cookie = " .
                SqlQuote($::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.
                } 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"};
    }
    return $loginok;
}




sub CheckEmailSyntax {
    my ($addr) = (@_);
    my $match = Param('emailregexp');
    if ($addr !~ /$match/ || $addr =~ /[\\\(\)<>&,;:"\[\] \t\r\n]/) {
        print "Content-type: text/html\n\n";

        # For security, escape HTML special characters.
        $addr = html_quote($addr);

        PutHeader("Check e-mail syntax");
        print "The e-mail address you entered\n";
        print "(<b>$addr</b>) didn't match our minimal\n";
        print "syntax checking for a legal email address.\n";
        print Param('emailregexpdesc') . "\n";
        print "It must also not contain any of these special characters: " .
              "<tt>\\ ( ) &amp; &lt; &gt; , ; : \" [ ]</tt> " .
              "or any whitespace.\n";
        print "<p>Please click <b>Back</b> and try again.\n";
        PutFooter();
        exit;
    }
}



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});

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

    print "The password for the e-mail address\n";
    print "$login has been e-mailed to that address.\n";
    print "<p>When the e-mail arrives, you can click <b>Back</b>\n";
    print "and enter your password in the form there.\n";
}


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("The username or password you entered is not valid.")
          && 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 ) {
            my $password = InsertNewUser($enteredlogin, "");
            print "Content-Type: text/html\n\n";
            PutHeader("Account Created");
            MailPassword($enteredlogin, $password);
            PutFooter();
            exit;
        }

        # 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("The username or password you entered is not valid.")
              && 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, "user logged in");
                $token = Token::HasPasswordToken($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\n\n";
         PutHeader("LDAP server not defined");
         print "The LDAP server for authentication has not been defined.  ";
         print "Please contact ".Param("maintainer")." ";
         print "and notify him of this problem.\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\n\n";
         PutHeader("Unable to connect to LDAP server");
         print "I was unable to connect to the LDAP server for user ";
         print "authentication.  Please contact ".Param("maintainer");
         print " and notify him of this problem.\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\n\n";
         PutHeader("Login Failed");
         print "The username or password you entered is not valid.\n";
         print "Please click <b>Back</b> and try again.\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\n\n";
         PutHeader("Login Failed");
         print "The username or password you entered is not valid.\n";
         print "Please click <b>Back</b> and try again.\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\n\n";
         PutHeader("LDAP authentication error");
         print "I was unable to retrieve the ".Param("LDAPmailattribute");
         print " attribute from the LDAP server.  Please contact ";
         print Param("maintainer")." and notify him of this error.\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;
       if (!defined $ENV{'REMOTE_HOST'}) {
         $ENV{'REMOTE_HOST'} = $ENV{'REMOTE_ADDR'};
       }
       SendSQL("insert into logincookies (userid,cryptpassword,hostname) values (@{[DBNameToIdAndCheck($enteredlogin)]}, @{[SqlQuote($realcryptpwd)]}, @{[SqlQuote($ENV{'REMOTE_HOST'})]})");
       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

";
            PutHeader("Your account has been disabled");
            print $::disabledreason;
            print "<HR>\n";
            print "If you believe your account should be restored, please\n";
            print "send email to " . Param("maintainer") . " explaining\n";
            print "why.\n";
            PutFooter();
            exit();
        }
        print "Content-type: text/html\n\n";
        PutHeader("Login");
        if(Param("useLDAP")) {
          print "I need a legitimate LDAP username and password to continue.\n";
        } else {
          print "I need a legitimate e-mail address and password to continue.\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>Username:</b></td>
<td><input size=10 name=LDAP_login></td>
</tr>
<tr>
<td align=right><b>Password:</b></td>
<td><input type=password size=10 name=LDAP_password></td>";
        } else {
          print "
<td align=right><b>E-mail address:</b></td>
<td><input size=35 name=Bugzilla_login></td>
</tr>
<tr>
<td align=right><b>Password:</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( $_ !~ /^Bugzilla_/ , keys %::FORM ) ) {
          if (scalar(@{$::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="Login">
          </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>If you don't have a Bugzilla account, you can 
              <a href="createaccount.cgi">create a new account</a>.</p>
              <form method="get" action="token.cgi">
                <input type="hidden" name="a" value="reqpw">
                If you have an account, but have forgotten your password,
                enter your login name below and submit a request 
                to change your password.<br>
                <input size="35" name="loginname">
                <input type="submit" value="Submit Request">
              </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 {
    my ($title, $h1, $h2, $extra, $jscript) = (@_);

    if (!defined $h1) {
        $h1 = $title;
    }
    if (!defined $h2) {
        $h2 = "";
    }
    if (!defined $extra) {
       $extra = "";
    }
    $jscript ||= "";
    # If we are shutdown, we want a very basic page to give that
    # information.  Also, the page title should indicate that
    # we are down.  
    if (Param('shutdownhtml')) {
        $title = "Bugzilla is Down";
        $h1 = "Bugzilla is currently down";
        $h2 = "";
        $extra = "";
        $jscript = "";
    }

    print qq|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML>
<HEAD>
<TITLE>$title</TITLE>
| . Param("headerhtml") . qq|
$jscript
</HEAD>
<BODY | . Param("bodyhtml") . qq| $extra>
| . PerformSubsts(Param("bannerhtml"), undef) . qq|
<TABLE BORDER="0" CELLSPACING="0">
<TR>
<TD VALIGN="TOP" ALIGN="LEFT">
    <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="2">
    <TR><TD VALIGN="TOP" ALIGN="LEFT">
        <FONT SIZE="+1">
        <B>$h1</B>
        </FONT>
    </TD></TR>
    </TABLE>
</TD>
<TD VALIGN="MIDDLE">&nbsp;</TD>
<TD VALIGN="MIDDLE" ALIGN="LEFT">
$h2
</TD></TR></TABLE>
    |;

    if (Param("shutdownhtml")) {
        # If we are dealing with the params page, we want
        # to ignore shutdownhtml
        if ($0 !~ m:[\\/](do)?editparams.cgi$:) {
            print "<p>\n";
            print Param("shutdownhtml");
            exit;
        }
    }
}


# Putfooter echoes footerhtml and by default prints closing tags
#
# param
#   dontclose (boolean): avoid sending </body></html>
#
# Example:
# Putfooter(); # normal close
# Putfooter(1); # don't send closing tags

sub PutFooter {
    my ( $dontclose ) = @_;
    print PerformSubsts(Param("footerhtml"));
    print "\n</body></html>\n" if ( ! $dontclose );
    SyncAnyPendingShadowChanges();
}


sub DisplayError {
  my ($message, $title) = (@_);
  $title ||= "Error";

  print "Content-type: text/html\n\n";
  PutHeader($title);

  print PerformSubsts( Param("errorhtml") , {errormsg => $message} );

  PutFooter();

  return 1;
}

sub PuntTryAgain ($) {
    my ($str) = (@_);
    print PerformSubsts(Param("errorhtml"),
                        {errormsg => $str});
    SendSQL("UNLOCK TABLES");
    PutFooter();
    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. ***");
        print "<TABLE BORDER=1><TD><H2>Bug $id has been confirmed by votes.</H2>\n";
        system("./processmail", $id);
        print "<TD><A HREF=\"show_bug.cgi?id=$id\">Go To BUG# $id</A></TABLE>\n";
    }

}



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

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

    if (defined $starttime) {
        $datepart = "and bugs_activity.bug_when >= $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);
    
    # Instead of outright printing this, we are going to store it in a $html
    # variable and print it and the end.  This is so we can explain ? (if nesc.)
    # at the top of the activity table rather than the botom.
    my $html = "";
    $html .= "<table border cellpadding=4>\n";
    $html .= "<tr>\n";
    $html .= "    <th>Who</th><th>What</th><th>Removed</th><th>Added</th><th>When</th>\n";
    $html .= "</tr>\n";
    
    my @row;
    my $incomplete_data = 0;
    while (@row = FetchSQLData()) {
        my ($field,$attachid,$when,$removed,$added,$who) = (@row);
        $field =~ s/^Attachment/<a href="attachment.cgi?id=$attachid&amp;action=view">Attachment #$attachid<\/a>/ 
          if (Param('useattachmenttracker') && $attachid);
        $removed = html_quote($removed);
        $added = html_quote($added);
        $removed = "&nbsp;" if $removed eq "";
        $added = "&nbsp;" if $added eq "";


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