loncom/interface/loncommon.pm - diff

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Diff for /loncom/interface/loncommon.pm between versions 1.636.2.3 and 1.692.2.1

version 1.636.2.3, 2008/03/18 23:00:51	version 1.692.2.1, 2008/12/11 18:37:02
Line 61 use POSIX qw(strftime mktime);	Line 61 use POSIX qw(strftime mktime);
use Apache::lonmenu();	use Apache::lonmenu();
use Apache::lonenc();	use Apache::lonenc();
use Apache::lonlocal;	use Apache::lonlocal;
	use Apache::lonnet();
use HTML::Entities;	use HTML::Entities;
use Apache::lonhtmlcommon();	use Apache::lonhtmlcommon();
use Apache::loncoursedata();	use Apache::loncoursedata();
use Apache::lontexconvert();	use Apache::lontexconvert();
use Apache::lonclonecourse();	use Apache::lonclonecourse();
use LONCAPA qw(:DEFAULT :match);	use LONCAPA qw(:DEFAULT :match);
	use DateTime::TimeZone;
	use DateTime::Locale::Catalog;

# ---------------------------------------------- Designs	# ---------------------------------------------- Designs
use vars qw(%defaultdesign);	use vars qw(%defaultdesign);
Line 78 my $readit;	Line 81 my $readit;
## Global Variables	## Global Variables
##	##


	# ----------------------------------------------- SSI with retries:
	#

	=pod

	=head1 Server Side include with retries:

	=over 4

	=item * &ssi_with_retries(resource,retries form)

	Performs an ssi with some number of retries. Retries continue either
	until the result is ok or until the retry count supplied by the
	caller is exhausted.

	Inputs:

	=over 4

	resource - Identifies the resource to insert.

	retries - Count of the number of retries allowed.

	form - Hash that identifies the rendering options.

	=back

	Returns:

	=over 4

	content - The content of the response. If retries were exhausted this is empty.

	response - The response from the last attempt (which may or may not have been successful.

	=back

	=back

	=cut

	sub ssi_with_retries {
	my ($resource, $retries, %form) = @_;


	my $ok = 0; # True if we got a good response.
	my $content;
	my $response;

	# Try to get the ssi done. within the retries count:

	do {
	($content, $response) = &Apache::lonnet::ssi($resource, %form);
	$ok = $response->is_success;
	if (!$ok) {
	&Apache::lonnet::logthis("Failed ssi_with_retries on $resource: ".$response->is_success.', '.$response->code.', '.$response->message);
	}
	$retries--;
	} while (!$ok && ($retries > 0));

	if (!$ok) {
	$content = ''; # On error return an empty content.
	}
	return ($content, $response);

	}



# ----------------------------------------------- Filetypes/Languages/Copyright	# ----------------------------------------------- Filetypes/Languages/Copyright
my %language;	my %language;
my %supported_language;	my %supported_language;
Line 214 BEGIN {	Line 287 BEGIN {

=over 4	=over 4

=item * browser_and_searcher_javascript ()	=item * &browser_and_searcher_javascript()

X<browsing, javascript>X<searching, javascript>Returns a string	X<browsing, javascript>X<searching, javascript>Returns a string
containing javascript with two functions, C<openbrowser> and	containing javascript with two functions, C<openbrowser> and
C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>	C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
tags.	tags.

=item * openbrowser(formname,elementname,only,omit) [javascript]	=item * &openbrowser(formname,elementname,only,omit) [javascript]

inputs: formname, elementname, only, omit	inputs: formname, elementname, only, omit

Line 234 with the given extension. Can be a comm	Line 307 with the given extension. Can be a comm
Specifying 'omit' will restrict the browser to NOT displaying files	Specifying 'omit' will restrict the browser to NOT displaying files
with the given extension. Can be a comma separated list.	with the given extension. Can be a comma separated list.

=item * opensearcher(formname, elementname) [javascript]	=item * &opensearcher(formname,elementname) [javascript]

Inputs: formname, elementname	Inputs: formname, elementname

Line 319 sub storeresurl {	Line 392 sub storeresurl {
unless ($resurl=~/^\/res/) { return 0; }	unless ($resurl=~/^\/res/) { return 0; }
$resurl=~s/\/$//;	$resurl=~s/\/$//;
&Apache::lonnet::put('environment',{'lastresurl' => $resurl});	&Apache::lonnet::put('environment',{'lastresurl' => $resurl});
&Apache::lonnet::appenv('environment.lastresurl' => $resurl);	&Apache::lonnet::appenv({'environment.lastresurl' => $resurl});
return 1;	return 1;
}	}

Line 377 sub selectstudent_link {	Line 450 sub selectstudent_link {
return '';	return '';
}	}

	sub authorbrowser_javascript {
	return <<"ENDAUTHORBRW";
	<script type="text/javascript">
	var stdeditbrowser;

	function openauthorbrowser(formname,udom) {
	var url = '/adm/pickauthor?';
	url += 'form='+formname+'&roledom='+udom;
	var title = 'Author_Browser';
	var options = 'scrollbars=1,resizable=1,menubar=0';
	options += ',width=700,height=600';
	stdeditbrowser = open(url,title,options,'1');
	stdeditbrowser.focus();
	}

	</script>
	ENDAUTHORBRW
	}

sub coursebrowser_javascript {	sub coursebrowser_javascript {
my ($domainfilter,$sec_element,$formname)=@_;	my ($domainfilter,$sec_element,$formname)=@_;
my $crs_or_grp_alert = &mt('Please select the type of LON-CAPA entity - Course or Group - for which you wish to add/modify a user role');	my $crs_or_grp_alert = &mt('Please select the type of LON-CAPA entity - Course or Group - for which you wish to add/modify a user role');
Line 514 sub selectcourse_link {	Line 606 sub selectcourse_link {
'","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'","'.$selecttype.'");'."'>".&mt('Select Course')."</a>";	'","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'","'.$selecttype.'");'."'>".&mt('Select Course')."</a>";
}	}

	sub selectauthor_link {
	my ($form,$udom)=@_;
	return '<a href="javascript:openauthorbrowser('."'$form','$udom'".');">'.
	&mt('Select Author').'</a>';
	}

sub check_uncheck_jscript {	sub check_uncheck_jscript {
my $jscript = <<"ENDSCRT";	my $jscript = <<"ENDSCRT";
function checkAll(field) {	function checkAll(field) {
Line 539 ENDSCRT	Line 637 ENDSCRT
return $jscript;	return $jscript;
}	}

	sub select_timezone {
	my ($name,$selected,$onchange,$includeempty)=@_;
	my $output='<select name="'.$name.'" '.$onchange.'>'."\n";
	if ($includeempty) {
	$output .= '<option value=""';
	if (($selected eq '') \|\| ($selected eq 'local')) {
	$output .= ' selected="selected" ';
	}
	$output .= '> </option>';
	}
	my @timezones = DateTime::TimeZone->all_names;
	foreach my $tzone (@timezones) {
	$output.= '<option value="'.$tzone.'"';
	if ($tzone eq $selected) {
	$output.=' selected="selected"';
	}
	$output.=">$tzone</option>\n";
	}
	$output.="</select>";
	return $output;
	}

	sub select_datelocale {
	my ($name,$selected,$onchange,$includeempty)=@_;
	my $output='<select name="'.$name.'" '.$onchange.'>'."\n";
	if ($includeempty) {
	$output .= '<option value=""';
	if ($selected eq '') {
	$output .= ' selected="selected" ';
	}
	$output .= '> </option>';
	}
	my (@possibles,%locale_names);
	my @locales = DateTime::Locale::Catalog::Locales;
	foreach my $locale (@locales) {
	if (ref($locale) eq 'HASH') {
	my $id = $locale->{'id'};
	if ($id ne '') {
	my $en_terr = $locale->{'en_territory'};
	my $native_terr = $locale->{'native_territory'};
	my @languages = &Apache::lonlocal::preferred_languages();
	if (grep(/^en$/,@languages) \|\| !@languages) {
	if ($en_terr ne '') {
	$locale_names{$id} = '('.$en_terr.')';
	} elsif ($native_terr ne '') {
	$locale_names{$id} = $native_terr;
	}
	} else {
	if ($native_terr ne '') {
	$locale_names{$id} = $native_terr.' ';
	} elsif ($en_terr ne '') {
	$locale_names{$id} = '('.$en_terr.')';
	}
	}
	push (@possibles,$id);
	}
	}
	}
	foreach my $item (sort(@possibles)) {
	$output.= '<option value="'.$item.'"';
	if ($item eq $selected) {
	$output.=' selected="selected"';
	}
	$output.=">$item";
	if ($locale_names{$item} ne '') {
	$output.=" $locale_names{$item}</option>\n";
	}
	$output.="</option>\n";
	}
	$output.="</select>";
	return $output;
	}

=pod	=pod

=item * linked_select_forms(...)	=item * &linked_select_forms(...)

linked_select_forms returns a string containing a <script></script> block	linked_select_forms returns a string containing a <script></script> block
and html for two <select> menus. The select menus will be linked in that	and html for two <select> menus. The select menus will be linked in that
Line 707 END	Line 877 END

=pod	=pod

=item * help_open_topic($topic, $text, $stayOnPage, $width, $height)	=item * &help_open_topic($topic,$text,$stayOnPage,$width,$height)

Returns a string corresponding to an HTML link to the given help	Returns a string corresponding to an HTML link to the given help
$topic, where $topic corresponds to the name of a .tex file in	$topic, where $topic corresponds to the name of a .tex file in
Line 756 sub help_open_topic {	Line 926 sub help_open_topic {
if ($text ne "") {	if ($text ne "") {
$template .=	$template .=
"<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".	"<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
"<td bgcolor='#5555FF'><a target=\"_top\" href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";	"<td bgcolor='#5555FF'><span class=\"LC_nobreak\"><a target=\"_top\" href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
}	}

# Add the graphic	# Add the graphic
my $title = &mt('Online Help');	my $title = &mt('Online Help');
my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");	my $helpicon=&lonhttpdurl("/adm/help/help.png");
$template .= <<"ENDTEMPLATE";	$template .= <<"ENDTEMPLATE";
<a target="_top" href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>	<a target="_top" href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
ENDTEMPLATE	ENDTEMPLATE
if ($text ne '') { $template.='</td></tr></table>' };	if ($text ne '') { $template.='</span></td></tr></table>' };
return $template;	return $template;

}	}
Line 787 sub helpLatexCheatsheet {	Line 957 sub helpLatexCheatsheet {
.'</td><td>'.	.'</td><td>'.
&Apache::loncommon::help_open_topic("Other_Symbols",&mt('Other Symbols'),	&Apache::loncommon::help_open_topic("Other_Symbols",&mt('Other Symbols'),
undef,undef,600)	undef,undef,600)
	.'</td><td>'.
	&Apache::loncommon::help_open_topic("Authoring_Output_Tags",&mt('Output Tags'),
	undef,undef,600)
.'</td></tr></table>';	.'</td></tr></table>';
}	}

Line 796 sub general_help {	Line 969 sub general_help {
$helptopic='Authoring_Intro';	$helptopic='Authoring_Intro';
} elsif ($env{'request.role'}=~/^cc/) {	} elsif ($env{'request.role'}=~/^cc/) {
$helptopic='Course_Coordination_Intro';	$helptopic='Course_Coordination_Intro';
	} elsif ($env{'request.role'}=~/^dc/) {
	$helptopic='Domain_Coordination_Intro';
}	}
return $helptopic;	return $helptopic;
}	}
Line 1017 ENDTEMPLATE	Line 1192 ENDTEMPLATE

=pod	=pod

=item * change_content_javascript():	=item * &change_content_javascript():

This and the next function allow you to create small sections of an	This and the next function allow you to create small sections of an
otherwise static HTML page that you can update on the fly with	otherwise static HTML page that you can update on the fly with
Line 1072 DOMBASED	Line 1247 DOMBASED

=pod	=pod

=item * changable_area($name, $origContent):	=item * &changable_area($name,$origContent):

This provides a "changable area" that can be modified on the fly via	This provides a "changable area" that can be modified on the fly via
the Javascript code provided in C<change_content_javascript>. $name is	the Javascript code provided in C<change_content_javascript>. $name is
Line 1096 sub changable_area {	Line 1271 sub changable_area {

=pod	=pod

=item * viewport_geometry_js {	=item * &viewport_geometry_js

Provides javascript object (Geometry) which can provide information about the viewport geometry for the client browser.	Provides javascript object (Geometry) which can provide information about the viewport geometry for the client browser.

Line 1143 GEOMETRY	Line 1318 GEOMETRY

=pod	=pod

=item * viewport_size_js {	=item * &viewport_size_js()

Provides a javascript function to set values of two form elements - width and height (elements are passed in as arguments to the javascript function) to the dimensions of the user's browser window.	Provides a javascript function to set values of two form elements - width and height (elements are passed in as arguments to the javascript function) to the dimensions of the user's browser window.

Line 1167 DIMS	Line 1342 DIMS

=pod	=pod

=item * resize_textarea_js	=item * &resize_textarea_js()

emits the needed javascript to resize a textarea to be as big as possible	emits the needed javascript to resize a textarea to be as big as possible

Line 1176 the id of the element to resize, second	Line 1351 the id of the element to resize, second
surrounds everything that comes after the textarea, this routine needs	surrounds everything that comes after the textarea, this routine needs
to be attached to the <body> for the onload and onresize events.	to be attached to the <body> for the onload and onresize events.

	=back

=cut	=cut

Line 1228 RESIZE	Line 1404 RESIZE

=pod	=pod

=back

=head1 Excel and CSV file utility routines	=head1 Excel and CSV file utility routines

=over 4	=over 4
Line 1241 RESIZE	Line 1415 RESIZE

=pod	=pod

=item * csv_translate($text)	=item * &csv_translate($text)

Translate $text to allow it to be output as a 'comma separated values'	Translate $text to allow it to be output as a 'comma separated values'
format.	format.
Line 1262 sub csv_translate {	Line 1436 sub csv_translate {

=pod	=pod

=item * define_excel_formats	=item * &define_excel_formats()

Define some commonly used Excel cell formats.	Define some commonly used Excel cell formats.

Line 1318 sub define_excel_formats {	Line 1492 sub define_excel_formats {

=pod	=pod

=item * create_workbook	=item * &create_workbook()

Create an Excel worksheet. If it fails, output message on the	Create an Excel worksheet. If it fails, output message on the
request object and return undefs.	request object and return undefs.
Line 1361 sub create_workbook {	Line 1535 sub create_workbook {

=pod	=pod

=item * create_text_file	=item * &create_text_file()

Create a file to write to and eventually make available to the user.	Create a file to write to and eventually make available to the user.
If file creation fails, outputs an error message on the request object and	If file creation fails, outputs an error message on the request object and
Line 1386 sub create_text_file {	Line 1560 sub create_text_file {
$fh = Apache::File->new('>/home/httpd'.$filename);	$fh = Apache::File->new('>/home/httpd'.$filename);
if (! defined($fh)) {	if (! defined($fh)) {
$r->log_error("Couldn't open $filename for output $!");	$r->log_error("Couldn't open $filename for output $!");
$r->print("Problems occured in creating the output file. ".	$r->print(&mt('Problems occurred in creating the output file. '
"This error has been logged. ".	.'This error has been logged. '
"Please alert your LON-CAPA administrator.");	.'Please alert your LON-CAPA administrator.'));
}	}
return ($fh,$filename)	return ($fh,$filename)
}	}
Line 1429 sub domain_select {	Line 1603 sub domain_select {

=over 4	=over 4

=item * multiple_select_form($name,$value,$size,$hash,$order)	=item * &multiple_select_form($name,$value,$size,$hash,$order)

Returns a string containing a <select> element int multiple mode	Returns a string containing a <select> element int multiple mode

Line 1479 sub multiple_select_form {	Line 1653 sub multiple_select_form {

=pod	=pod

=item * select_form($defdom,$name,%hash)	=item * &select_form($defdom,$name,%hash)

Returns a string containing a <select name='$name' size='1'> form to	Returns a string containing a <select name='$name' size='1'> form to
allow a user to select options from a hash option_name => displayed text.	allow a user to select options from a hash option_name => displayed text.
Line 1566 sub select_level_form {	Line 1740 sub select_level_form {

=pod	=pod

=item * select_dom_form($defdom,$name,$includeempty,$showdomdesc)	=item * &select_dom_form($defdom,$name,$includeempty,$showdomdesc)

Returns a string containing a <select name='$name' size='1'> form to	Returns a string containing a <select name='$name' size='1'> form to
allow a user to select the domain to preform an operation in.	allow a user to select the domain to preform an operation in.
Line 1606 sub select_dom_form {	Line 1780 sub select_dom_form {

=pod	=pod

=item * home_server_form_item($domain,$name,$defaultflag)	=item * &home_server_form_item($domain,$name,$defaultflag)

input: 4 arguments (two required, two optional) -	input: 4 arguments (two required, two optional) -
$domain - domain of new user	$domain - domain of new user
Line 1766 sub decode_user_agent {	Line 1940 sub decode_user_agent {

=over 4	=over 4

=item * authform_xxxxxx	=item * &authform_xxxxxx()

The authform_xxxxxx subroutines provide javascript and html forms which	The authform_xxxxxx subroutines provide javascript and html forms which
handle some of the conveniences required for authentication forms.	handle some of the conveniences required for authentication forms.
This is not an optimal method, but it works.	This is not an optimal method, but it works.

See loncreateuser.pm for invocation and use examples.

=over 4	=over 4

=item * authform_header	=item * authform_header
Line 1790 See loncreateuser.pm for invocation and	Line 1962 See loncreateuser.pm for invocation and

=back	=back

=back	See loncreateuser.pm for invocation and use examples.

=cut	=cut

Line 2242 sub get_assignable_auth {	Line 2414 sub get_assignable_auth {
}	}

###############################################################	###############################################################
## Get Authentication Defaults for Domain ##
###############################################################

=pod

=head1 Domains and Authentication

Returns default authentication type and an associated argument as
listed in file 'domain.tab'.

=over 4

=item * get_auth_defaults

get_auth_defaults($target_domain) returns the default authentication
type and an associated argument (initial password or a kerberos domain).
These values are stored in lonTabs/domain.tab

($def_auth, $def_arg) = &get_auth_defaults($target_domain);

If target_domain is not found in domain.tab, returns nothing ('').

=cut

#-------------------------------------------
sub get_auth_defaults {
my $domain=shift;
return (&Apache::lonnet::domain($domain,'auth_def'),
&Apache::lonnet::domain($domain,'auth_arg_def'));

}
###############################################################
## End Get Authentication Defaults for Domain ##
###############################################################

###############################################################
## Get Kerberos Defaults for Domain ##	## Get Kerberos Defaults for Domain ##
###############################################################	###############################################################
##	##
Line 2289 sub get_auth_defaults {	Line 2425 sub get_auth_defaults {

=pod	=pod

=item * get_kerberos_defaults	=item * &get_kerberos_defaults()

get_kerberos_defaults($target_domain) returns the default kerberos	get_kerberos_defaults($target_domain) returns the default kerberos
version and domain. If not found in domain.tabs, it defaults to	version and domain. If not found, it defaults to version 4 and the
version 4 and the domain of the server.	domain of the server.

	=over 4

($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);	($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);

	=back

	=back

=cut	=cut

#-------------------------------------------	#-------------------------------------------
sub get_kerberos_defaults {	sub get_kerberos_defaults {
my $domain=shift;	my $domain=shift;
my ($krbdef,$krbdefdom) =	my ($krbdef,$krbdefdom);
&Apache::loncommon::get_auth_defaults($domain);	my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
unless ($krbdef =~/^krb/ && $krbdefdom) {	if (($domdefaults{'auth_def'} =~/^krb(4\|5)$/) && ($domdefaults{'auth_arg_def'} ne '')) {
	$krbdef = $domdefaults{'auth_def'};
	$krbdefdom = $domdefaults{'auth_arg_def'};
	} else {
$ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;	$ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
my $krbdefdom=$1;	my $krbdefdom=$1;
$krbdefdom=~tr/a-z/A-Z/;	$krbdefdom=~tr/a-z/A-Z/;
Line 2313 sub get_kerberos_defaults {	Line 2458 sub get_kerberos_defaults {
return ($krbdef,$krbdefdom);	return ($krbdef,$krbdefdom);
}	}

=pod

=back

=cut

###############################################################	###############################################################
## Thesaurus Functions ##	## Thesaurus Functions ##
Line 2329 sub get_kerberos_defaults {	Line 2469 sub get_kerberos_defaults {

=over 4	=over 4

=item * initialize_keywords	=item * &initialize_keywords()

Initializes the package variable %Keywords if it is empty. Uses the	Initializes the package variable %Keywords if it is empty. Uses the
package variable $thesaurus_db_file.	package variable $thesaurus_db_file.
Line 2374 sub initialize_keywords {	Line 2514 sub initialize_keywords {

=pod	=pod

=item * keyword($word)	=item * &keyword($word)

Returns true if $word is a keyword. A keyword is a word that appears more	Returns true if $word is a keyword. A keyword is a word that appears more
than the average number of times in the thesaurus database. Calls	than the average number of times in the thesaurus database. Calls
Line 2395 sub keyword {	Line 2535 sub keyword {

=pod	=pod

=item * get_related_words	=item * &get_related_words()

Look up a word in the thesaurus. Takes a scalar argument and returns	Look up a word in the thesaurus. Takes a scalar argument and returns
an array of words. If the keyword is not in the thesaurus, an empty array	an array of words. If the keyword is not in the thesaurus, an empty array
Line 2453 sub get_related_words {	Line 2593 sub get_related_words {

=over 4	=over 4

=item * plainname($uname,$udom,$first)	=item * &plainname($uname,$udom,$first)

Takes a users logon name and returns it as a string in	Takes a users logon name and returns it as a string in
"first middle last generation" form	"first middle last generation" form
Line 2482 sub plainname {	Line 2622 sub plainname {
# -------------------------------------------------------------------- Nickname	# -------------------------------------------------------------------- Nickname
=pod	=pod

=item * nickname($uname,$udom)	=item * &nickname($uname,$udom)

Gets a users name and returns it as a string as	Gets a users name and returns it as a string as

Line 2532 sub getnames {	Line 2672 sub getnames {
}	}

# -------------------------------------------------------------------- getemails	# -------------------------------------------------------------------- getemails

=pod	=pod

=item * getemails($uname,$udom)	=item * &getemails($uname,$udom)

Gets a user's email information and returns it as a hash with keys:	Gets a user's email information and returns it as a hash with keys:
notification, critnotification, permanentemail	notification, critnotification, permanentemail

For notification and critnotification, values are comma-separated lists	For notification and critnotification, values are comma-separated lists
of e-mail address(es); for permanentemail, value is a single e-mail address.	of e-mail addresses; for permanentemail, value is a single e-mail address.


=cut	=cut


sub getemails {	sub getemails {
my ($uname,$udom)=@_;	my ($uname,$udom)=@_;
if ($udom eq 'public' && $uname eq 'public') {	if ($udom eq 'public' && $uname eq 'public') {
Line 2578 sub flush_email_cache {	Line 2721 sub flush_email_cache {

=pod	=pod

=item * screenname($uname,$udom)	=item * &screenname($uname,$udom)

Gets a users screenname and returns it as a string	Gets a users screenname and returns it as a string

Line 2674 sub student_image_tag {	Line 2817 sub student_image_tag {

=over 4	=over 4

=item * languageids()	=item * &languageids()

returns list of all language ids	returns list of all language ids

Line 2686 sub languageids {	Line 2829 sub languageids {

=pod	=pod

=item * languagedescription()	=item * &languagedescription()

returns description of a specified language id	returns description of a specified language id

Line 2711 sub supportedlanguagecode {	Line 2854 sub supportedlanguagecode {

=pod	=pod

=item * copyrightids()	=item * &copyrightids()

returns list of all copyrights	returns list of all copyrights

Line 2723 sub copyrightids {	Line 2866 sub copyrightids {

=pod	=pod

=item * copyrightdescription()	=item * &copyrightdescription()

returns description of a specified copyright id	returns description of a specified copyright id

Line 2735 sub copyrightdescription {	Line 2878 sub copyrightdescription {

=pod	=pod

=item * source_copyrightids()	=item * &source_copyrightids()

returns list of all source copyrights	returns list of all source copyrights

Line 2747 sub source_copyrightids {	Line 2890 sub source_copyrightids {

=pod	=pod

=item * source_copyrightdescription()	=item * &source_copyrightdescription()

returns description of a specified source copyright id	returns description of a specified source copyright id

Line 2759 sub source_copyrightdescription {	Line 2902 sub source_copyrightdescription {

=pod	=pod

=item * filecategories()	=item * &filecategories()

returns list of all file categories	returns list of all file categories

Line 2771 sub filecategories {	Line 2914 sub filecategories {

=pod	=pod

=item * filecategorytypes()	=item * &filecategorytypes()

returns list of file types belonging to a given file	returns list of file types belonging to a given file
category	category
Line 2785 sub filecategorytypes {	Line 2928 sub filecategorytypes {

=pod	=pod

=item * fileembstyle()	=item * &fileembstyle()

returns embedding style for a specified file type	returns embedding style for a specified file type

Line 2809 sub filecategoryselect {	Line 2952 sub filecategoryselect {

=pod	=pod

=item * filedescription()	=item * &filedescription()

returns description for a specified file type	returns description for a specified file type

Line 2823 sub filedescription {	Line 2966 sub filedescription {

=pod	=pod

=item * filedescriptionex()	=item * &filedescriptionex()

returns description for a specified file type with	returns description for a specified file type with
extra formatting	extra formatting
Line 2855 sub fileextensions {	Line 2998 sub fileextensions {

sub display_languages {	sub display_languages {
my %languages=();	my %languages=();
foreach my $lang (&preferred_languages()) {	foreach my $lang (&Apache::lonlocal::preferred_languages()) {
$languages{$lang}=1;	$languages{$lang}=1;
}	}
&get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);	&get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
Line 2867 sub display_languages {	Line 3010 sub display_languages {
return %languages;	return %languages;
}	}

sub preferred_languages {
my @languages=();
if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
@languages=(@languages,split(/\s(\,\|\;\|\:)\s/,
$env{'course.'.$env{'request.course.id'}.'.languages'}));
}
if ($env{'environment.languages'}) {
@languages=(@languages,
split(/\s(\,\|\;\|\:)\s/,$env{'environment.languages'}));
}
my $browser=$ENV{'HTTP_ACCEPT_LANGUAGE'};
if ($browser) {
my @browser =
map { (split(/\s;\s/,$_))[0] } (split(/\s,\s/,$browser));
push(@languages,@browser);
}
if (&Apache::lonnet::domain($env{'user.domain'},'lang_def')) {
@languages=(@languages,
&Apache::lonnet::domain($env{'user.domain'},
'lang_def'));
}
if (&Apache::lonnet::domain($env{'request.role.domain'},'lang_def')) {
@languages=(@languages,
&Apache::lonnet::domain($env{'request.role.domain'},
'lang_def'));
}
if (&Apache::lonnet::domain($Apache::lonnet::perlvar{'lonDefDomain'},
'lang_def')) {
@languages=(@languages,
&Apache::lonnet::domain($Apache::lonnet::perlvar{'lonDefDomain'},
'lang_def'));
}
# turn "en-ca" into "en-ca,en"
my @genlanguages;
foreach my $lang (@languages) {
unless ($lang=~/\w/) { next; }
push(@genlanguages,$lang);
if ($lang=~/(\-\|\_)/) {
push(@genlanguages,(split(/(\-\|\_)/,$lang))[0]);
}
}
#uniqueify the languages list
my %count;
@genlanguages = map { $count{$_}++ == 0 ? $_ : () } @genlanguages;
return @genlanguages;
}

sub languages {	sub languages {
my ($possible_langs) = @_;	my ($possible_langs) = @_;
my @preferred_langs = &preferred_languages();	my @preferred_langs = &Apache::lonlocal::preferred_languages();
if (!ref($possible_langs)) {	if (!ref($possible_langs)) {
if( wantarray ) {	if( wantarray ) {
return @preferred_langs;	return @preferred_langs;
Line 2947 sub languages {	Line 3043 sub languages {

=over 4	=over 4

=item * get_previous_attempt($symb, $username, $domain, $course,	=item * &get_previous_attempt($symb, $username, $domain, $course,
$getattempt, $regexp, $gradesub)	$getattempt, $regexp, $gradesub)

Return string with previous attempt on problem. Arguments:	Return string with previous attempt on problem. Arguments:
Line 3091 sub relative_to_absolute {	Line 3187 sub relative_to_absolute {

=pod	=pod

=item * get_student_view	=item * &get_student_view()

show a snapshot of what student was looking at	show a snapshot of what student was looking at

Line 3110 sub get_student_view {	Line 3206 sub get_student_view {
}	}
if (defined($target)) { $form{'grade_target'} = $target; }	if (defined($target)) { $form{'grade_target'} = $target; }
$feedurl=&Apache::lonnet::clutter($feedurl);	$feedurl=&Apache::lonnet::clutter($feedurl);
my $userview=&Apache::lonnet::ssi_body($feedurl,%form);	my ($userview,$response)=&Apache::lonnet::ssi_body($feedurl,%form);
$userview=~s/\<body[^\>]*\>//gi;	$userview=~s/\<body[^\>]*\>//gi;
$userview=~s/\<\/body\>//gi;	$userview=~s/\<\/body\>//gi;
$userview=~s/\<html\>//gi;	$userview=~s/\<html\>//gi;
Line 3119 sub get_student_view {	Line 3215 sub get_student_view {
$userview=~s/\<\/head\>//gi;	$userview=~s/\<\/head\>//gi;
$userview=~s/action\s*\=/would_be_action\=/gi;	$userview=~s/action\s*\=/would_be_action\=/gi;
$userview=&relative_to_absolute($feedurl,$userview);	$userview=&relative_to_absolute($feedurl,$userview);
return $userview;	if (wantarray) {
	return ($userview,$response);
	} else {
	return $userview;
	}
	}

	sub get_student_view_with_retries {
	my ($symb,$retries,$username,$domain,$courseid,$target,$moreenv) = @_;

	my $ok = 0; # True if we got a good response.
	my $content;
	my $response;

	# Try to get the student_view done. within the retries count:

	do {
	($content, $response) = &get_student_view($symb,$username,$domain,$courseid,$target,$moreenv);
	$ok = $response->is_success;
	if (!$ok) {
	&Apache::lonnet::logthis("Failed get_student_view_with_retries on $symb: ".$response->is_success.', '.$response->code.', '.$response->message);
	}
	$retries--;
	} while (!$ok && ($retries > 0));

	if (!$ok) {
	$content = ''; # On error return an empty content.
	}
	if (wantarray) {
	return ($content, $response);
	} else {
	return $content;
	}
}	}

=pod	=pod

=item * get_student_answers()	=item * &get_student_answers()

show a snapshot of how student was answering problem	show a snapshot of how student was answering problem

Line 3228 sub pprmlink {	Line 3356 sub pprmlink {


sub timehash {	sub timehash {
my @ltime=localtime(shift);	my ($thistime) = @_;
return ( 'seconds' => $ltime[0],	my $timezone = &Apache::lonlocal::gettimezone();
'minutes' => $ltime[1],	my $dt = DateTime->from_epoch(epoch => $thistime)
'hours' => $ltime[2],	->set_time_zone($timezone);
'day' => $ltime[3],	my $wday = $dt->day_of_week();
'month' => $ltime[4]+1,	if ($wday == 7) { $wday = 0; }
'year' => $ltime[5]+1900,	return ( 'second' => $dt->second(),
'weekday' => $ltime[6],	'minute' => $dt->minute(),
'dayyear' => $ltime[7]+1,	'hour' => $dt->hour(),
'dlsav' => $ltime[8] );	'day' => $dt->day_of_month(),
	'month' => $dt->month(),
	'year' => $dt->year(),
	'weekday' => $wday,
	'dayyear' => $dt->day_of_year(),
	'dlsav' => $dt->is_dst() );
}	}

sub utc_string {	sub utc_string {
Line 3247 sub utc_string {	Line 3380 sub utc_string {

sub maketime {	sub maketime {
my %th=@_;	my %th=@_;
	my ($epoch_time,$timezone,$dt);
	$timezone = &Apache::lonlocal::gettimezone();
	eval {
	$dt = DateTime->new( year => $th{'year'},
	month => $th{'month'},
	day => $th{'day'},
	hour => $th{'hour'},
	minute => $th{'minute'},
	second => $th{'second'},
	time_zone => $timezone,
	);
	};
	if (!$@) {
	$epoch_time = $dt->epoch;
	if ($epoch_time) {
	return $epoch_time;
	}
	}
return POSIX::mktime(	return POSIX::mktime(
($th{'seconds'},$th{'minutes'},$th{'hours'},	($th{'seconds'},$th{'minutes'},$th{'hours'},
$th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));	$th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
Line 3627 sub blocking_status {	Line 3778 sub blocking_status {

###############################################	###############################################

	sub check_ip_acc {
	my ($acc)=@_;
	&Apache::lonxml::debug("acc is $acc");
	if (!defined($acc) \|\| $acc =~ /^\s$/ \|\| $acc =~/^\sno\s*$/i) {
	return 1;
	}
	my $allowed=0;
	my $ip=$env{'request.host'} \|\| $ENV{'REMOTE_ADDR'};

	my $name;
	foreach my $pattern (split(',',$acc)) {
	$pattern =~ s/^\s*//;
	$pattern =~ s/\s*$//;
	if ($pattern =~ /\*$/) {
	#35.8.*
	$pattern=~s/\*//;
	if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
	} elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
	#35.8.3.[34-56]
	my $low=$2;
	my $high=$3;
	$pattern=$1;
	if ($ip =~ /^\Q$pattern\E/) {
	my $last=(split(/\./,$ip))[3];
	if ($last <=$high && $last >=$low) { $allowed=1; }
	}
	} elsif ($pattern =~ /^\*/) {
	#*.msu.edu
	$pattern=~s/\*//;
	if (!defined($name)) {
	use Socket;
	my $netaddr=inet_aton($ip);
	($name)=gethostbyaddr($netaddr,AF_INET);
	}
	if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
	} elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
	#127.0.0.1
	if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
	} else {
	#some.name.com
	if (!defined($name)) {
	use Socket;
	my $netaddr=inet_aton($ip);
	($name)=gethostbyaddr($netaddr,AF_INET);
	}
	if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
	}
	if ($allowed) { last; }
	}
	return $allowed;
	}

	###############################################

=pod	=pod

=head1 Domain Template Functions	=head1 Domain Template Functions
Line 3981 ENDROLE	Line 4186 ENDROLE
$dc_info = '('.$dc_info.')';	$dc_info = '('.$dc_info.')';
}	}

if ($env{'environment.remote'} eq 'off') {	if (($env{'environment.remote'} eq 'off') \|\| ($args->{'suppress_header_logos'})) {
# No Remote	# No Remote
if ($env{'request.state'} eq 'construct') {	if ($env{'request.state'} eq 'construct') {
$forcereg=1;	$forcereg=1;
Line 4006 ENDROLE	Line 4211 ENDROLE
$titleinfo =	$titleinfo =
&Apache::loncommon::help_open_menu('','',3,'Authoring')	&Apache::loncommon::help_open_menu('','',3,'Authoring')
.'<b>'.&mt('Construction Space').'</b>: '	.'<b>'.&mt('Construction Space').'</b>: '
.'<form name="dirs" method="post" action="'.$formaction.'"'	.'<form name="dirs" method="post" action="'.$formaction
.' target="_top"><tt><b>'	.'" target="_top"><tt><b>'
.&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"	.&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
.&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')	.&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
.'</form>'	.'</form>'
Line 4373 table.LC_docs_path td.LC_docs_path_compo	Line 4578 table.LC_docs_path td.LC_docs_path_compo
td.LC_table_cell_checkbox {	td.LC_table_cell_checkbox {
text-align: center;	text-align: center;
}	}

table#LC_mainmenu td.LC_mainmenu_column {	table#LC_mainmenu td.LC_mainmenu_column {
vertical-align: top;	vertical-align: top;
}	}
Line 4387 table#LC_mainmenu td.LC_mainmenu_column	Line 4591 table#LC_mainmenu td.LC_mainmenu_column
.LC_menubuttons_link {	.LC_menubuttons_link {
text-decoration: none;	text-decoration: none;
}	}
	#2008--9-5: new menu style sheet.Changed category
.LC_menubuttons_category {	.LC_menubuttons_category {
color: $font;	color: $font;
background: $pgbg;	background: $pgbg;
Line 4454 td.LC_menubuttons_img {	Line 4658 td.LC_menubuttons_img {
text-align: right;	text-align: right;
}	}

	.LC_roleslog_note {
	font-size: smaller;
	}

table.LC_aboutme_port {	table.LC_aboutme_port {
border: 0px;	border: 0px;
border-collapse: collapse;	border-collapse: collapse;
Line 4777 table.LC_pick_box td.LC_pick_box_title {	Line 4985 table.LC_pick_box td.LC_pick_box_title {
width: 184px;	width: 184px;
padding: 8px;	padding: 8px;
}	}
	table.LC_pick_box td.LC_selfenroll_pick_box_title {
	background: $tabbg;
	font-weight: bold;
	text-align: right;
	width: 350px;
	padding: 8px;
	}

table.LC_pick_box td.LC_pick_box_value {	table.LC_pick_box td.LC_pick_box_value {
text-align: left;	text-align: left;
padding: 8px;	padding: 8px;
Line 5228 hr.LC_edit_problem_divide {	Line 5444 hr.LC_edit_problem_divide {
height: 3px;	height: 3px;
border: 0px;	border: 0px;
}	}
	img.stift{
	border-width:0;
	vertical-align:middle;
	}

	table#LC_mainmenu{
	margin-top:10px;
	width:80%;

	}

	table#LC_mainmenu td.LC_mainmenu_col_fieldset{
	vertical-align: top;
	width: 45%;
	}
	.LC_mainmenu_fieldset_category {
	color: $font;
	background: $pgbg;
	font-family: $sans;
	font-size: small;
	font-weight: bold;
	}
	fieldset#LC_mainmenu_fieldset {
	margin:0px 10px 10px 0px;

	}
END	END
}	}

Line 5321 Inputs: none	Line 5563 Inputs: none

sub font_settings {	sub font_settings {
my $headerstring='';	my $headerstring='';
if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {	if (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
$headerstring.=
'<meta Content-Type="text/html; charset=x-mac-roman" />';
} elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
$headerstring.=	$headerstring.=
'<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';	'<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
}	}
Line 5383 sub endheadtag {	Line 5622 sub endheadtag {

Returns a uniform complete <head>..</head> section for LON-CAPA web pages.	Returns a uniform complete <head>..</head> section for LON-CAPA web pages.

Inputs: $title - optional title for the page	Inputs:
$head_extra - optional extra HTML to put inside the <head>
	=over 4

	$title - optional title for the page

	$head_extra - optional extra HTML to put inside the <head>

	=back

=cut	=cut

Line 5399 sub head {	Line 5645 sub head {

Returns a complete <html> .. <body> section for LON-CAPA web pages.	Returns a complete <html> .. <body> section for LON-CAPA web pages.

Inputs: $title - optional title for the page	Inputs:
$head_extra - optional extra HTML to incude inside the <head>
$args - additional optional args supported are:	=over 4
only_body -> is true will set &bodytag() onlybodytag
	$title - optional title for the page

	$head_extra - optional extra HTML to incude inside the <head>

	$args - additional optional args supported are:

	=over 8

	only_body -> is true will set &bodytag() onlybodytag
arg on	arg on
no_nav_bar -> is true will set &bodytag() notopbar arg on	no_nav_bar -> is true will set &bodytag() notopbar arg on
add_entries -> additional attributes to add to the <body>	add_entries -> additional attributes to add to the <body>
domain -> force to color decorate a page for a	domain -> force to color decorate a page for a
specific domain	specific domain
function -> force usage of a specific rolish color	function -> force usage of a specific rolish color
scheme	scheme
redirect -> see &headtag()	redirect -> see &headtag()
bgcolor -> override the default page bg color	bgcolor -> override the default page bg color
js_ready -> return a string ready for being used in	js_ready -> return a string ready for being used in
a javascript writeln	a javascript writeln
html_encode -> return a string ready for being used in	html_encode -> return a string ready for being used in
a html attribute	a html attribute
force_register -> if is true will turn on the &bodytag()	force_register -> if is true will turn on the &bodytag()
$forcereg arg	$forcereg arg
body_title -> alternate text to use instead of $title	body_title -> alternate text to use instead of $title
in the title box that appears, this text	in the title box that appears, this text
is not auto translated like the $title is	is not auto translated like the $title is
frameset -> if true will start with a <frameset>	frameset -> if true will start with a <frameset>
rather than <body>	rather than <body>
no_title -> if true the title bar won't be shown	no_title -> if true the title bar won't be shown
skip_phases -> hash ref of	skip_phases -> hash ref of
head -> skip the <html><head> generation	head -> skip the <html><head> generation
body -> skip all <body> generation	body -> skip all <body> generation
	no_inline_link -> if true and in remote mode, don't show the
no_inline_link -> if true and in remote mode, don't show the
'Switch To Inline Menu' link	'Switch To Inline Menu' link
	no_auto_mt_title -> prevent &mt()ing the title arg
no_auto_mt_title -> prevent &mt()ing the title arg	inherit_jsmath -> when creating popup window in a page,

inherit_jsmath -> when creating popup window in a page,
should it have jsmath forced on by the	should it have jsmath forced on by the
current page	current page

	=back

	=back

=cut	=cut

sub start_page {	sub start_page {
Line 6662 sub instrule_disallow_msg {	Line 6918 sub instrule_disallow_msg {
$text{'action'} = 'IDs';	$text{'action'} = 'IDs';
}	}
}	}
$response = &mt("The $text{'item'} you chose $text{'match'} the format of $text{'items'} defined for <span class=\"LC_cusr_emph\">[_1]</span>, but the $text{'item'} $text{'do'} not exist in the institutional directory.",$domdesc).'<br />';	$response = &mt("The $text{'item'} you chose $text{'match'} the format of $text{'items'} defined for [_1], but the $text{'item'} $text{'do'} not exist in the institutional directory.",'<span class="LC_cusr_emph">'.$domdesc.'</span>').'<br />';
if ($mode eq 'upload') {	if ($mode eq 'upload') {
if ($checkitem eq 'username') {	if ($checkitem eq 'username') {
$response .= &mt("You will need to modify your upload file so it will include $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}.");	$response .= &mt("You will need to modify your upload file so it will include $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}.");
} elsif ($checkitem eq 'id') {	} elsif ($checkitem eq 'id') {
$response .= &mt("Either upload a file which includes $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or when associating fields with data columns, omit an association for the ID/Student Number field.");	$response .= &mt("Either upload a file which includes $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or when associating fields with data columns, omit an association for the Student/Employee ID field.");
	}
	} elsif ($mode eq 'selfcreate') {
	if ($checkitem eq 'id') {
	$response .= &mt("You must either choose $text{'action'} with a different format -- $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or leave the ID field blank.");
}	}
} else {	} else {
if ($checkitem eq 'username') {	if ($checkitem eq 'username') {
Line 6692 sub personal_data_fieldtitles {	Line 6952 sub personal_data_fieldtitles {
return %fieldtitles;	return %fieldtitles;
}	}

	sub sorted_inst_types {
	my ($dom) = @_;
	my ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
	my $othertitle = &mt('All users');
	if ($env{'request.course.id'}) {
	$othertitle = &mt('Any users');
	}
	my @types;
	if (ref($order) eq 'ARRAY') {
	@types = @{$order};
	}
	if (@types == 0) {
	if (ref($usertypes) eq 'HASH') {
	@types = sort(keys(%{$usertypes}));
	}
	}
	if (keys(%{$usertypes}) > 0) {
	$othertitle = &mt('Other users');
	}
	return ($othertitle,$usertypes,\@types);
	}

	sub get_institutional_codes {
	my ($settings,$allcourses,$LC_code) = @_;
	# Get complete list of course sections to update
	my @currsections = ();
	my @currxlists = ();
	my $coursecode = $$settings{'internal.coursecode'};

	if ($$settings{'internal.sectionnums'} ne '') {
	@currsections = split(/,/,$$settings{'internal.sectionnums'});
	}

	if ($$settings{'internal.crosslistings'} ne '') {
	@currxlists = split(/,/,$$settings{'internal.crosslistings'});
	}

	if (@currxlists > 0) {
	foreach (@currxlists) {
	if (m/^([^:]+):(\w*)$/) {
	unless (grep/^$1$/,@{$allcourses}) {
	push @{$allcourses},$1;
	$$LC_code{$1} = $2;
	}
	}
	}
	}

	if (@currsections > 0) {
	foreach (@currsections) {
	if (m/^(\w+):(\w*)$/) {
	my $sec = $coursecode.$1;
	my $lc_sec = $2;
	unless (grep/^$sec$/,@{$allcourses}) {
	push @{$allcourses},$sec;
	$$LC_code{$sec} = $lc_sec;
	}
	}
	}
	}
	return;
	}

=pod	=pod

=back	=back
Line 6700 sub personal_data_fieldtitles {	Line 7023 sub personal_data_fieldtitles {

=over 4	=over 4

=item * get_unprocessed_cgi($query,$possible_names)	=item * &get_unprocessed_cgi($query,$possible_names)

Modify the %env hash to contain unprocessed CGI form parameters held in	Modify the %env hash to contain unprocessed CGI form parameters held in
$query. The parameters listed in $possible_names (an array reference),	$query. The parameters listed in $possible_names (an array reference),
Line 6729 sub get_unprocessed_cgi {	Line 7052 sub get_unprocessed_cgi {

=pod	=pod

=item * cacheheader()	=item * &cacheheader()

returns cache-controlling header code	returns cache-controlling header code

Line 6746 sub cacheheader {	Line 7069 sub cacheheader {

=pod	=pod

=item * no_cache($r)	=item * &no_cache($r)

specifies header code to not have cache	specifies header code to not have cache

Line 6782 sub content_type {	Line 7105 sub content_type {

=pod	=pod

=item * add_to_env($name,$value)	=item * &add_to_env($name,$value)

adds $name to the %env hash with value	adds $name to the %env hash with value
$value, if $name already exists, the entry is converted to an array	$value, if $name already exists, the entry is converted to an array
Line 6809 sub add_to_env {	Line 7132 sub add_to_env {

=pod	=pod

=item * get_env_multiple($name)	=item * &get_env_multiple($name)

gets $name from the %env hash, it seemlessly handles the cases where multiple	gets $name from the %env hash, it seemlessly handles the cases where multiple
values may be defined and end up as an array ref.	values may be defined and end up as an array ref.
Line 6832 sub get_env_multiple {	Line 7155 sub get_env_multiple {
return(@values);	return(@values);
}	}

	sub ask_for_embedded_content {
	my ($actionurl,$state,$allfiles,$codebase,$args)=@_;
	my $upload_output = '
	<form name="upload_embedded" action="'.$actionurl.'"
	method="post" enctype="multipart/form-data">';
	$upload_output .= $state;
	$upload_output .= '<b>Upload embedded files</b>:<br />'.&start_data_table();

	my $num = 0;
	foreach my $embed_file (sort {lc($a) cmp lc($b)} keys(%{$allfiles})) {
	$upload_output .= &start_data_table_row().
	'<td>'.$embed_file.'</td><td>';
	if ($args->{'ignore_remote_references'}
	&& $embed_file =~ m{^\w+://}) {
	$upload_output.='<span class="LC_warning">'.&mt("URL points to other server.").'</span>';
	} elsif ($args->{'error_on_invalid_names'}
	&& $embed_file ne &Apache::lonnet::clean_filename($embed_file,{'keep_path' => 1,})) {

	$upload_output.='<span class="LC_warning">'.&mt("Invalid characters").'</span>';

	} else {
	$upload_output .='
	<input name="embedded_item_'.$num.'" type="file" value="" />
	<input name="embedded_orig_'.$num.'" type="hidden" value="'.&escape($embed_file).'" />';
	my $attrib = join(':',@{$$allfiles{$embed_file}});
	$upload_output .=
	"\n\t\t".
	'<input name="embedded_attrib_'.$num.'" type="hidden" value="'.
	$attrib.'" />';
	if (exists($$codebase{$embed_file})) {
	$upload_output .=
	"\n\t\t".
	'<input name="codebase_'.$num.'" type="hidden" value="'.
	&escape($$codebase{$embed_file}).'" />';
	}
	}
	$upload_output .= '</td>'.&Apache::loncommon::end_data_table_row();
	$num++;
	}
	$upload_output .= &Apache::loncommon::end_data_table().'<br />
	<input type ="hidden" name="number_embedded_items" value="'.$num.'" />
	<input type ="submit" value="'.&mt('Upload Listed Files').'" />
	'.&mt('(only files for which a location has been provided will be uploaded)').'
	</form>';
	return $upload_output;
	}

	sub upload_embedded {
	my ($context,$dirpath,$uname,$udom,$dir_root,$url_root,$group,$disk_quota,
	$current_disk_usage) = @_;
	my $output;
	for (my $i=0; $i<$env{'form.number_embedded_items'}; $i++) {
	next if (!exists($env{'form.embedded_item_'.$i.'.filename'}));
	my $orig_uploaded_filename =
	$env{'form.embedded_item_'.$i.'.filename'};

	$env{'form.embedded_orig_'.$i} =
	&unescape($env{'form.embedded_orig_'.$i});
	my ($path,$fname) =
	($env{'form.embedded_orig_'.$i} =~ m{(./)([^/])});
	# no path, whole string is fname
	if (!$fname) { $fname = $env{'form.embedded_orig_'.$i} };

	$path = $env{'form.currentpath'}.$path;
	$fname = &Apache::lonnet::clean_filename($fname);
	# See if there is anything left
	next if ($fname eq '');

	# Check if file already exists as a file or directory.
	my ($state,$msg);
	if ($context eq 'portfolio') {
	my $port_path = $dirpath;
	if ($group ne '') {
	$port_path = "groups/$group/$port_path";
	}
	($state,$msg) = &check_for_upload($path,$fname,$group,'embedded_item_'.$i,
	$dir_root,$port_path,$disk_quota,
	$current_disk_usage,$uname,$udom);
	if ($state eq 'will_exceed_quota'
	\|\| $state eq 'file_locked'
	\|\| $state eq 'file_exists' ) {
	$output .= $msg;
	next;
	}
	} elsif (($context eq 'author') \|\| ($context eq 'testbank')) {
	($state,$msg) = &check_for_existing($path,$fname,'embedded_item_'.$i);
	if ($state eq 'exists') {
	$output .= $msg;
	next;
	}
	}
	# Check if extension is valid
	if (($fname =~ /\.(\w+)$/) &&
	(&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
	$output .= &mt('Invalid file extension ([_1]) - reserved for LONCAPA use - rename the file with a different extension and re-upload. ',$1);
	next;
	} elsif (($fname =~ /\.(\w+)$/) &&
	(!defined(&Apache::loncommon::fileembstyle($1)))) {
	$output .= &mt('Unrecognized file extension ([_1]) - rename the file with a proper extension and re-upload.',$1);
	next;
	} elsif ($fname=~/\.(\d+)\.(\w+)$/) {
	$output .= &mt('File name not allowed - rename the file to remove the number immediately before the file extension([_1]) and re-upload.',$2);
	next;
	}

	$env{'form.embedded_item_'.$i.'.filename'}=$fname;
	if ($context eq 'portfolio') {
	my $result=
	&Apache::lonnet::userfileupload('embedded_item_'.$i,'',
	$dirpath.$path);
	if ($result !~ m\|^/uploaded/\|) {
	$output .= '<span class="LC_error">'
	.&mt('An error occurred ([_1]) while trying to upload [_2] for embedded element [_3].'
	,$result,$orig_uploaded_filename,$env{'form.embedded_orig_'.$i})
	.'</span><br />';
	next;
	} else {
	$output .= '<p>'.&mt('Uploaded [_1]','<span class="LC_filename">'.
	$path.$fname.'</span>').'</p>';
	}
	} else {
	# Save the file
	my $target = $env{'form.embedded_item_'.$i};
	my $fullpath = $dir_root.$dirpath.'/'.$path;
	my $dest = $fullpath.$fname;
	my $url = $url_root.$dirpath.'/'.$path.$fname;
	my @parts=split(/\//,$fullpath);
	my $count;
	my $filepath = $dir_root;
	for ($count=4;$count<=$#parts;$count++) {
	$filepath .= "/$parts[$count]";
	if ((-e $filepath)!=1) {
	mkdir($filepath,0770);
	}
	}
	my $fh;
	if (!open($fh,'>'.$dest)) {
	&Apache::lonnet::logthis('Failed to create '.$dest);
	$output .= '<span class="LC_error">'.
	&mt('An error occurred while trying to upload [_1] for embedded element [_2].',$orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
	'</span><br />';
	} else {
	if (!print $fh $env{'form.embedded_item_'.$i}) {
	&Apache::lonnet::logthis('Failed to write to '.$dest);
	$output .= '<span class="LC_error">'.
	&mt('An error occurred while writing the file [_1] for embedded element [_2].',$orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
	'</span><br />';
	} else {
	if ($context eq 'testbank') {
	$output .= &mt('Embedded file uploaded successfully:').
	' <a href="'.$url.'">'.
	$orig_uploaded_filename.'</a><br />';
	} else {
	$output .= '<font size="+2">'.
	&mt('View embedded file: [_1]','<a href="'.$url.'">'.
	$orig_uploaded_filename.'</a>').'</font><br />';
	}
	}
	close($fh);
	}
	}
	}
	return $output;
	}

	sub check_for_existing {
	my ($path,$fname,$element) = @_;
	my ($state,$msg);
	if (-d $path.'/'.$fname) {
	$state = 'exists';
	$msg = &mt('Unable to upload [_1]. A directory by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$path);
	} elsif (-e $path.'/'.$fname) {
	$state = 'exists';
	$msg = &mt('Unable to upload [_1]. A file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$path);
	}
	if ($state eq 'exists') {
	$msg = '<span class="LC_error">'.$msg.'</span><br />';
	}
	return ($state,$msg);
	}

	sub check_for_upload {
	my ($path,$fname,$group,$element,$portfolio_root,$port_path,
	$disk_quota,$current_disk_usage,$uname,$udom) = @_;
	my $filesize = (length($env{'form.'.$element})) / 1000; #express in k (1024?)
	my $getpropath = 1;
	my @dir_list = &Apache::lonnet::dirlist($portfolio_root.$path,$udom,$uname,
	$getpropath);
	my $found_file = 0;
	my $locked_file = 0;
	foreach my $line (@dir_list) {
	my ($file_name)=split(/\&/,$line,2);
	if ($file_name eq $fname){
	$file_name = $path.$file_name;
	if ($group ne '') {
	$file_name = $group.$file_name;
	}
	$found_file = 1;
	if (&Apache::lonnet::is_locked($file_name,$udom,$uname) eq 'true') {
	$locked_file = 1;
	}
	}
	}
	if (($current_disk_usage + $filesize) > $disk_quota){
	my $msg = '<span class="LC_error">'.
	&mt('Unable to upload [_1]. (size = [_2] kilobytes). Disk quota will be exceeded.','<span class="LC_filename">'.$fname.'</span>',$filesize).'</span>'.
	'<br />'.&mt('Disk quota is [_1] kilobytes. Your current disk usage is [_2] kilobytes.',$disk_quota,$current_disk_usage);
	return ('will_exceed_quota',$msg);
	} elsif ($found_file) {
	if ($locked_file) {
	my $msg = '<span class="LC_error">';
	$msg .= &mt('Unable to upload [_1]. A locked file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>','<span class="LC_filename">'.$port_path.$env{'form.currentpath'}.'</span>');
	$msg .= '</span><br />';
	$msg .= &mt('You will be able to rename or delete existing [_1] after a grade has been assigned.','<span class="LC_filename">'.$fname.'</span>');
	return ('file_locked',$msg);
	} else {
	my $msg = '<span class="LC_error">';
	$msg .= &mt('Unable to upload [_1]. A file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$port_path.$env{'form.currentpath'});
	$msg .= '</span>';
	$msg .= '<br />';
	$msg .= &mt('To upload, rename or delete existing [_1] in [_2].','<span class="LC_filename">'.$fname.'</span>', $port_path.$env{'form.currentpath'});
	return ('file_exists',$msg);
	}
	}
	}


=pod	=pod

Line 6841 sub get_env_multiple {	Line 7390 sub get_env_multiple {

=over 4	=over 4

=item * upfile_store($r)	=item * &upfile_store($r)

Store uploaded file, $r should be the HTTP Request object,	Store uploaded file, $r should be the HTTP Request object,
needs $env{'form.upfile'}	needs $env{'form.upfile'}
Line 6871 sub upfile_store {	Line 7420 sub upfile_store {

=pod	=pod

=item * load_tmp_file($r)	=item * &load_tmp_file($r)

Load uploaded file from tmp, $r should be the HTTP Request object,	Load uploaded file from tmp, $r should be the HTTP Request object,
needs $env{'form.datatoken'},	needs $env{'form.datatoken'},
Line 6895 sub load_tmp_file {	Line 7444 sub load_tmp_file {

=pod	=pod

=item * upfile_record_sep()	=item * &upfile_record_sep()

Separate uploaded file into records	Separate uploaded file into records
returns array of records,	returns array of records,
Line 6917 sub upfile_record_sep {	Line 7466 sub upfile_record_sep {

=pod	=pod

=item * record_sep($record)	=item * &record_sep($record)

Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}	Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}

Line 7002 sub record_sep {	Line 7551 sub record_sep {

=pod	=pod

=item * upfile_select_html()	=item * &upfile_select_html()

Return HTML code to select a file from the users machine and specify	Return HTML code to select a file from the users machine and specify
the file type.	the file type.
Line 7049 sub get_samples {	Line 7598 sub get_samples {

=pod	=pod

=item * csv_print_samples($r,$records)	=item * &csv_print_samples($r,$records)

Prints a table of sample values from each column uploaded $r is an	Prints a table of sample values from each column uploaded $r is an
Apache Request ref, $records is an arrayref from	Apache Request ref, $records is an arrayref from
Line 7061 Apache Request ref, $records is an array	Line 7610 Apache Request ref, $records is an array
######################################################	######################################################
sub csv_print_samples {	sub csv_print_samples {
my ($r,$records) = @_;	my ($r,$records) = @_;
my $samples = &get_samples($records,3);	my $samples = &get_samples($records,5);

$r->print(&mt('Samples').'<br />'.&start_data_table().	$r->print(&mt('Samples').'<br />'.&start_data_table().
&start_data_table_header_row());	&start_data_table_header_row());
Line 7085 sub csv_print_samples {	Line 7634 sub csv_print_samples {

=pod	=pod

=item * csv_print_select_table($r,$records,$d)	=item * &csv_print_select_table($r,$records,$d)

Prints a table to create associations between values and table columns.	Prints a table to create associations between values and table columns.

Line 7108 sub csv_print_select_table {	Line 7657 sub csv_print_select_table {
&end_data_table_header_row()."\n");	&end_data_table_header_row()."\n");
foreach my $array_ref (@$d) {	foreach my $array_ref (@$d) {
my ($value,$display,$defaultcol)=@{ $array_ref };	my ($value,$display,$defaultcol)=@{ $array_ref };
$r->print(&start_data_table_row().'<tr><td>'.$display.'</td>');	$r->print(&start_data_table_row().'<td>'.$display.'</td>');

$r->print('<td><select name=f'.$i.	$r->print('<td><select name=f'.$i.
' onchange="javascript:flip(this.form,'.$i.');">');	' onchange="javascript:flip(this.form,'.$i.');">');
Line 7116 sub csv_print_select_table {	Line 7665 sub csv_print_select_table {
foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {	foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
$r->print('<option value="'.$sample.'"'.	$r->print('<option value="'.$sample.'"'.
($sample eq $defaultcol ? ' selected="selected" ' : '').	($sample eq $defaultcol ? ' selected="selected" ' : '').
'>Column '.($sample+1).'</option>');	'>'.&mt('Column [_1]',($sample+1)).'</option>');
}	}
$r->print('</select></td>'.&end_data_table_row()."\n");	$r->print('</select></td>'.&end_data_table_row()."\n");
$i++;	$i++;
Line 7131 sub csv_print_select_table {	Line 7680 sub csv_print_select_table {

=pod	=pod

=item * csv_samples_select_table($r,$records,$d)	=item * &csv_samples_select_table($r,$records,$d)

Prints a table of sample values from the upload and can make associate samples to internal names.	Prints a table of sample values from the upload and can make associate samples to internal names.

Line 7147 sub csv_samples_select_table {	Line 7696 sub csv_samples_select_table {
my ($r,$records,$d) = @_;	my ($r,$records,$d) = @_;
my $i=0;	my $i=0;
#	#
my $samples = &get_samples($records,3);	my $max_samples = 5;
	my $samples = &get_samples($records,$max_samples);
$r->print(&start_data_table().	$r->print(&start_data_table().
&start_data_table_header_row().'<th>'.	&start_data_table_header_row().'<th>'.
&mt('Field').'</th><th>'.&mt('Samples').'</th>'.	&mt('Field').'</th><th>'.&mt('Samples').'</th>'.
Line 7163 sub csv_samples_select_table {	Line 7713 sub csv_samples_select_table {
$display.'</option>');	$display.'</option>');
}	}
$r->print('</select></td><td>');	$r->print('</select></td><td>');
foreach my $line (0..2) {	foreach my $line (0..($max_samples-1)) {
if (defined($samples->[$line]{$key})) {	if (defined($samples->[$line]{$key})) {
$r->print($samples->[$line]{$key}."<br />\n");	$r->print($samples->[$line]{$key}."<br />\n");
}	}
Line 7181 sub csv_samples_select_table {	Line 7731 sub csv_samples_select_table {

=pod	=pod

=item clean_excel_name($name)	=item * &clean_excel_name($name)

Returns a replacement for $name which does not contain any illegal characters.	Returns a replacement for $name which does not contain any illegal characters.

Line 7200 sub clean_excel_name {	Line 7750 sub clean_excel_name {

=pod	=pod

=item * check_if_partid_hidden($id,$symb,$udom,$uname)	=item * &check_if_partid_hidden($id,$symb,$udom,$uname)

Returns either 1 or undef	Returns either 1 or undef

Line 7241 sub check_if_partid_hidden {	Line 7791 sub check_if_partid_hidden {

=over 4	=over 4

=item get_cgi_id	=item * &get_cgi_id()

Inputs: none	Inputs: none

Line 7265 sub get_cgi_id {	Line 7815 sub get_cgi_id {

=pod	=pod

=item DrawBarGraph	=item * &DrawBarGraph()

Facilitates the plotting of data in a (stacked) bar graph.	Facilitates the plotting of data in a (stacked) bar graph.
Puts plot definition data into the users environment in order for	Puts plot definition data into the users environment in order for
Line 7400 sub DrawBarGraph {	Line 7950 sub DrawBarGraph {
$ValuesHash{$id.'.'.$key} = $value;	$ValuesHash{$id.'.'.$key} = $value;
}	}
#	#
&Apache::lonnet::appenv(%ValuesHash);	&Apache::lonnet::appenv(\%ValuesHash);
return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';	return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
}	}

Line 7409 sub DrawBarGraph {	Line 7959 sub DrawBarGraph {

=pod	=pod

=item DrawXYGraph	=item * &DrawXYGraph()

Facilitates the plotting of data in an XY graph.	Facilitates the plotting of data in an XY graph.
Puts plot definition data into the users environment in order for	Puts plot definition data into the users environment in order for
Line 7490 sub DrawXYGraph {	Line 8040 sub DrawXYGraph {
$ValuesHash{$id.'.'.$key} = $value;	$ValuesHash{$id.'.'.$key} = $value;
}	}
#	#
&Apache::lonnet::appenv(%ValuesHash);	&Apache::lonnet::appenv(\%ValuesHash);
return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';	return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
}	}

Line 7499 sub DrawXYGraph {	Line 8049 sub DrawXYGraph {

=pod	=pod

=item DrawXYYGraph	=item * &DrawXYYGraph()

Facilitates the plotting of data in an XY graph with two Y axes.	Facilitates the plotting of data in an XY graph with two Y axes.
Puts plot definition data into the users environment in order for	Puts plot definition data into the users environment in order for
Line 7592 sub DrawXYYGraph {	Line 8142 sub DrawXYYGraph {
$ValuesHash{$id.'.'.$key} = $value;	$ValuesHash{$id.'.'.$key} = $value;
}	}
#	#
&Apache::lonnet::appenv(%ValuesHash);	&Apache::lonnet::appenv(\%ValuesHash);
return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';	return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
}	}

Line 7609 Bad place for them but what the hell.	Line 8159 Bad place for them but what the hell.

=over 4	=over 4

=item &chartlink	=item * &chartlink()

Returns a link to the chart for a specific student.	Returns a link to the chart for a specific student.

Line 7648 sub chartlink {	Line 8198 sub chartlink {

=over 4	=over 4

=item &restore_course_settings	=item * &restore_course_settings()

=item &store_course_settings	=item * &store_course_settings()

Restores/Store indicated form parameters from the course environment.	Restores/Store indicated form parameters from the course environment.
Will not overwrite existing values of the form parameters.	Will not overwrite existing values of the form parameters.
Line 7724 sub store_settings {	Line 8274 sub store_settings {
'got error:'.$put_result);	'got error:'.$put_result);
}	}
# Make sure these settings stick around in this session, too	# Make sure these settings stick around in this session, too
&Apache::lonnet::appenv(%AppHash);	&Apache::lonnet::appenv(\%AppHash);
return;	return;
}	}

Line 7761 sub restore_settings {	Line 8311 sub restore_settings {

=over 4	=over 4

=item &build_recipient_list	=item * &build_recipient_list()

Build recipient lists for three types of e-mail:	Build recipient lists for three types of e-mail:
(a) Error Reports, (b) Package Updates, (c) Help requests, generated by	(a) Error Reports, (b) Package Updates, (c) Help requests, generated by
Line 7774 defdom (domain for which to retrieve con	Line 8324 defdom (domain for which to retrieve con
origmail (scalar - email address of recipient from loncapa.conf,	origmail (scalar - email address of recipient from loncapa.conf,
i.e., predates configuration by DC via domainprefs.pm	i.e., predates configuration by DC via domainprefs.pm

Returns: comma separated list of addresses to which to send e-mail.	Returns: comma separated list of addresses to which to send e-mail.

	=back

=cut	=cut

Line 7802 sub build_recipient_list {	Line 8354 sub build_recipient_list {
} elsif ($origmail ne '') {	} elsif ($origmail ne '') {
push(@recipients,$origmail);	push(@recipients,$origmail);
}	}
if ($defmail ne '') {	if (defined($defmail)) {
push(@recipients,$defmail);	if ($defmail ne '') {
	push(@recipients,$defmail);
	}
}	}
if ($otheremails) {	if ($otheremails) {
my @others;	my @others;
Line 7825 sub build_recipient_list {	Line 8379 sub build_recipient_list {
############################################################	############################################################
############################################################	############################################################

	=pod

	=head1 Course Catalog Routines

	=over 4

	=item * &gather_categories()

	Converts category definitions - keys of categories hash stored in
	coursecategories in configuration.db on the primary library server in a
	domain - to an array. Also generates javascript and idx hash used to
	generate Domain Coordinator interface for editing Course Categories.

	Inputs:

	categories (reference to hash of category definitions).

	cats (reference to array of arrays/hashes which encapsulates hierarchy of
	categories and subcategories).

	idx (reference to hash of counters used in Domain Coordinator interface for
	editing Course Categories).

	jsarray (reference to array of categories used to create Javascript arrays for
	Domain Coordinator interface for editing Course Categories).

	Returns: nothing

	Side effects: populates cats, idx and jsarray.

	=cut

	sub gather_categories {
	my ($categories,$cats,$idx,$jsarray) = @_;
	my %counters;
	my $num = 0;
	foreach my $item (keys(%{$categories})) {
	my ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$item);
	if ($container eq '' && $depth == 0) {
	$cats->[$depth][$categories->{$item}] = $cat;
	} else {
	$cats->[$depth]{$container}[$categories->{$item}] = $cat;
	}
	my ($escitem,$tail) = split(/:/,$item,2);
	if ($counters{$tail} eq '') {
	$counters{$tail} = $num;
	$num ++;
	}
	if (ref($idx) eq 'HASH') {
	$idx->{$item} = $counters{$tail};
	}
	if (ref($jsarray) eq 'ARRAY') {
	push(@{$jsarray->[$counters{$tail}]},$item);
	}
	}
	return;
	}

	=pod

	=item * &extract_categories()

	Used to generate breadcrumb trails for course categories.

	Inputs:

	categories (reference to hash of category definitions).

	cats (reference to array of arrays/hashes which encapsulates hierarchy of
	categories and subcategories).

	trails (reference to array of breacrumb trails for each category).

	allitems (reference to hash - key is category key
	(format: escaped(name):escaped(parent category):depth in hierarchy).

	idx (reference to hash of counters used in Domain Coordinator interface for
	editing Course Categories).

	jsarray (reference to array of categories used to create Javascript arrays for
	Domain Coordinator interface for editing Course Categories).

	subcats (reference to hash of arrays containing all subcategories within each
	category, -recursive)

	Returns: nothing

	Side effects: populates trails and allitems hash references.

	=cut

	sub extract_categories {
	my ($categories,$cats,$trails,$allitems,$idx,$jsarray,$subcats) = @_;
	if (ref($categories) eq 'HASH') {
	&gather_categories($categories,$cats,$idx,$jsarray);
	if (ref($cats->[0]) eq 'ARRAY') {
	for (my $i=0; $i<@{$cats->[0]}; $i++) {
	my $name = $cats->[0][$i];
	my $item = &escape($name).'::0';
	my $trailstr;
	if ($name eq 'instcode') {
	$trailstr = &mt('Official courses (with institutional codes)');
	} else {
	$trailstr = $name;
	}
	if ($allitems->{$item} eq '') {
	push(@{$trails},$trailstr);
	$allitems->{$item} = scalar(@{$trails})-1;
	}
	my @parents = ($name);
	if (ref($cats->[1]{$name}) eq 'ARRAY') {
	for (my $j=0; $j<@{$cats->[1]{$name}}; $j++) {
	my $category = $cats->[1]{$name}[$j];
	if (ref($subcats) eq 'HASH') {
	push(@{$subcats->{$item}},&escape($category).':'.&escape($name).':1');
	}
	&recurse_categories($cats,2,$category,$trails,$allitems,\@parents,$subcats);
	}
	} else {
	if (ref($subcats) eq 'HASH') {
	$subcats->{$item} = [];
	}
	}
	}
	}
	}
	return;
	}

	=pod

	=item *&recurse_categories()

	Recursively used to generate breadcrumb trails for course categories.

	Inputs:

	cats (reference to array of arrays/hashes which encapsulates hierarchy of
	categories and subcategories).

	depth (current depth in hierarchy of categories and sub-categories - 0 indexed).

	category (current course category, for which breadcrumb trail is being generated).

	trails (reference to array of breadcrumb trails for each category).

	allitems (reference to hash - key is category key
	(format: escaped(name):escaped(parent category):depth in hierarchy).

	parents (array containing containers directories for current category,
	back to top level).

	Returns: nothing

	Side effects: populates trails and allitems hash references

	=cut

	sub recurse_categories {
	my ($cats,$depth,$category,$trails,$allitems,$parents,$subcats) = @_;
	my $shallower = $depth - 1;
	if (ref($cats->[$depth]{$category}) eq 'ARRAY') {
	for (my $k=0; $k<@{$cats->[$depth]{$category}}; $k++) {
	my $name = $cats->[$depth]{$category}[$k];
	my $item = &escape($category).':'.&escape($parents->[-1]).':'.$shallower;
	my $trailstr = join(' -> ',(@{$parents},$category));
	if ($allitems->{$item} eq '') {
	push(@{$trails},$trailstr);
	$allitems->{$item} = scalar(@{$trails})-1;
	}
	my $deeper = $depth+1;
	push(@{$parents},$category);
	if (ref($subcats) eq 'HASH') {
	my $subcat = &escape($name).':'.$category.':'.$depth;
	for (my $j=@{$parents}; $j>=0; $j--) {
	my $higher;
	if ($j > 0) {
	$higher = &escape($parents->[$j]).':'.
	&escape($parents->[$j-1]).':'.$j;
	} else {
	$higher = &escape($parents->[$j]).'::'.$j;
	}
	push(@{$subcats->{$higher}},$subcat);
	}
	}
	&recurse_categories($cats,$deeper,$name,$trails,$allitems,$parents,
	$subcats);
	pop(@{$parents});
	}
	} else {
	my $item = &escape($category).':'.&escape($parents->[-1]).':'.$shallower;
	my $trailstr = join(' -> ',(@{$parents},$category));
	if ($allitems->{$item} eq '') {
	push(@{$trails},$trailstr);
	$allitems->{$item} = scalar(@{$trails})-1;
	}
	}
	return;
	}

	=pod

	=item *&assign_categories_table()

	Create a datatable for display of hierarchical categories in a domain,
	with checkboxes to allow a course to be categorized.

	Inputs:

	cathash - reference to hash of categories defined for the domain (from
	configuration.db)

	currcat - scalar with an & separated list of categories assigned to a course.

	Returns: $output (markup to be displayed)

	=cut

	sub assign_categories_table {
	my ($cathash,$currcat) = @_;
	my $output;
	if (ref($cathash) eq 'HASH') {
	my (@cats,@trails,%allitems,%idx,@jsarray,@path,$maxdepth);
	&extract_categories($cathash,\@cats,\@trails,\%allitems,\%idx,\@jsarray);
	$maxdepth = scalar(@cats);
	if (@cats > 0) {
	my $itemcount = 0;
	if (ref($cats[0]) eq 'ARRAY') {
	$output = &Apache::loncommon::start_data_table();
	my @currcategories;
	if ($currcat ne '') {
	@currcategories = split('&',$currcat);
	}
	for (my $i=0; $i<@{$cats[0]}; $i++) {
	my $parent = $cats[0][$i];
	my $css_class = $itemcount%2?' class="LC_odd_row"':'';
	next if ($parent eq 'instcode');
	my $item = &escape($parent).'::0';
	my $checked = '';
	if (@currcategories > 0) {
	if (grep(/^\Q$item\E$/,@currcategories)) {
	$checked = ' checked="checked" ';
	}
	}
	$output .= '<tr '.$css_class.'><td><span class="LC_nobreak">'.
	'<input type="checkbox" name="usecategory" value="'.
	$item.'"'.$checked.' />'.$parent.'</span>'.
	'<input type="hidden" name="catname" value="'.$parent.'" /></td>';
	my $depth = 1;
	push(@path,$parent);
	$output .= &assign_category_rows($itemcount,\@cats,$depth,$parent,\@path,\@currcategories);
	pop(@path);
	$output .= '</tr><tr><td colspan="'.$maxdepth.'" class="LC_row_separator"></td></tr>';
	$itemcount ++;
	}
	$output .= &Apache::loncommon::end_data_table();
	}
	}
	}
	return $output;
	}

	=pod

	=item *&assign_category_rows()

	Create a datatable row for display of nested categories in a domain,
	with checkboxes to allow a course to be categorized,called recursively.

	Inputs:

	itemcount - track row number for alternating colors

	cats - reference to array of arrays/hashes which encapsulates hierarchy of
	categories and subcategories.

	depth - current depth in hierarchy of categories and sub-categories - 0 indexed.

	parent - parent of current category item

	path - Array containing all categories back up through the hierarchy from the
	current category to the top level.

	currcategories - reference to array of current categories assigned to the course

	Returns: $output (markup to be displayed).

	=cut

	sub assign_category_rows {
	my ($itemcount,$cats,$depth,$parent,$path,$currcategories) = @_;
	my ($text,$name,$item,$chgstr);
	if (ref($cats) eq 'ARRAY') {
	my $maxdepth = scalar(@{$cats});
	if (ref($cats->[$depth]) eq 'HASH') {
	if (ref($cats->[$depth]{$parent}) eq 'ARRAY') {
	my $numchildren = @{$cats->[$depth]{$parent}};
	my $css_class = $itemcount%2?' class="LC_odd_row"':'';
	$text .= '<td><table class="LC_datatable">';
	for (my $j=0; $j<$numchildren; $j++) {
	$name = $cats->[$depth]{$parent}[$j];
	$item = &escape($name).':'.&escape($parent).':'.$depth;
	my $deeper = $depth+1;
	my $checked = '';
	if (ref($currcategories) eq 'ARRAY') {
	if (@{$currcategories} > 0) {
	if (grep(/^\Q$item\E$/,@{$currcategories})) {
	$checked = ' checked="checked" ';
	}
	}
	}
	$text .= '<tr><td><span class="LC_nobreak"><label>'.
	'<input type="checkbox" name="usecategory" value="'.
	$item.'"'.$checked.' />'.$name.'</label></span>'.
	'<input type="hidden" name="catname" value="'.$name.'" />'.
	'</td><td>';
	if (ref($path) eq 'ARRAY') {
	push(@{$path},$name);
	$text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories);
	pop(@{$path});
	}
	$text .= '</td></tr>';
	}
	$text .= '</table></td>';
	}
	}
	}
	return $text;
	}

	############################################################
	############################################################


sub commit_customrole {	sub commit_customrole {
my ($udom,$uname,$url,$three,$four,$five,$start,$end) = @_;	my ($udom,$uname,$url,$three,$four,$five,$start,$end,$context) = @_;
my $output = &mt('Assigning custom role').' "'.$five.'" by '.$four.':'.$three.' in '.$url.	my $output = &mt('Assigning custom role').' "'.$five.'" by '.$four.':'.$three.' in '.$url.
($start?', '.&mt('starting').' '.localtime($start):'').	($start?', '.&mt('starting').' '.localtime($start):'').
($end?', ending '.localtime($end):'').': <b>'.	($end?', ending '.localtime($end):'').': <b>'.
&Apache::lonnet::assigncustomrole(	&Apache::lonnet::assigncustomrole(
$udom,$uname,$url,$three,$four,$five,$end,$start).	$udom,$uname,$url,$three,$four,$five,$end,$start,undef,undef,$context).
'</b><br />';	'</b><br />';
return $output;	return $output;
}	}
Line 7866 sub commit_standardrole {	Line 8754 sub commit_standardrole {
$output = &mt('Assigning').' '.$three.' in '.$url.	$output = &mt('Assigning').' '.$three.' in '.$url.
($start?', '.&mt('starting').' '.localtime($start):'').	($start?', '.&mt('starting').' '.localtime($start):'').
($end?', '.&mt('ending').' '.localtime($end):'').': ';	($end?', '.&mt('ending').' '.localtime($end):'').': ';
my $result = &Apache::lonnet::assignrole($udom,$uname,$url,$three,$end,$start);	my $result = &Apache::lonnet::assignrole($udom,$uname,$url,$three,$end,$start,'','',$context);
if ($context eq 'auto') {	if ($context eq 'auto') {
$output .= $result.$linefeed;	$output .= $result.$linefeed;
} else {	} else {
Line 7901 sub commit_studentrole {	Line 8789 sub commit_studentrole {
}	}
$oldsecurl = $uurl;	$oldsecurl = $uurl;
$expire_role_result =	$expire_role_result =
&Apache::lonnet::assignrole($udom,$uname,$uurl,'st',$now);	&Apache::lonnet::assignrole($udom,$uname,$uurl,'st',$now,'','',$context);
if ($env{'request.course.sec'} ne '') {	if ($env{'request.course.sec'} ne '') {
if ($expire_role_result eq 'refused') {	if ($expire_role_result eq 'refused') {
my @roles = ('st');	my @roles = ('st');
Line 7924 sub commit_studentrole {	Line 8812 sub commit_studentrole {
}	}
}	}
if (($expire_role_result eq 'ok') \|\| ($secchange == 0)) {	if (($expire_role_result eq 'ok') \|\| ($secchange == 0)) {
$modify_section_result = &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,$sec,$end,$start,'','',$cid);	$modify_section_result = &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,undef,undef,undef,$sec,$end,$start,'','',$cid,'',$context);
if ($modify_section_result =~ /^ok/) {	if ($modify_section_result =~ /^ok/) {
if ($secchange == 1) {	if ($secchange == 1) {
if ($sec eq '') {	if ($sec eq '') {
Line 8087 sub construct_course {	Line 8975 sub construct_course {
$outcome .= $clonemsg.$linefeed;	$outcome .= $clonemsg.$linefeed;
my %oldcenv=&Apache::lonnet::dump('environment',$$crsudom,$$crsunum);	my %oldcenv=&Apache::lonnet::dump('environment',$$crsudom,$$crsunum);
# Copy all files	# Copy all files
&Apache::lonclonecourse::copycoursefiles($cloneid,$$courseid);	&Apache::lonclonecourse::copycoursefiles($cloneid,$$courseid,$args->{'datemode'},$args->{'dateshift'});
# Restore URL	# Restore URL
$cenv{'url'}=$oldcenv{'url'};	$cenv{'url'}=$oldcenv{'url'};
# Restore title	# Restore title
Line 8134 sub construct_course {	Line 9022 sub construct_course {
} else {	} else {
$cenv{'internal.courseowner'} = $args->{'curruser'};	$cenv{'internal.courseowner'} = $args->{'curruser'};
}	}

my @badclasses = (); # Used to accumulate sections/crosslistings that did not pass classlist access check for course owner.	my @badclasses = (); # Used to accumulate sections/crosslistings that did not pass classlist access check for course owner.
if ($args->{'crssections'}) {	if ($args->{'crssections'}) {
$cenv{'internal.sectionnums'} = '';	$cenv{'internal.sectionnums'} = '';
Line 8334 sub construct_course {	Line 9221 sub construct_course {
$outcome .= ($fatal?$errtext:'read ok').' - ';	$outcome .= ($fatal?$errtext:'read ok').' - ';
my $title; my $url;	my $title; my $url;
if ($args->{'firstres'} eq 'syl') {	if ($args->{'firstres'} eq 'syl') {
$title='Syllabus';	$title=&mt('Syllabus');
$url='/public/'.$$crsudom.'/'.$$crsunum.'/syllabus';	$url='/public/'.$$crsudom.'/'.$$crsunum.'/syllabus';
} else {	} else {
$title='Navigate Contents';	$title=&mt('Navigate Contents');
$url='/adm/navmaps';	$url='/adm/navmaps';
}	}

Line 8391 sub icon {	Line 9278 sub icon {
return &lonhttpdurl($iconname);	return &lonhttpdurl($iconname);
}	}

sub lonhttpd_port {
my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
# IE doesn't like a secure page getting images from a non-secure
# port (when logging we haven't parsed the browser type so default
# back to secure
if ((!exists($env{'browser.type'}) \|\| $env{'browser.type'} eq 'explorer')
&& $ENV{'SERVER_PORT'} == 443) {
return 443;
}
return $lonhttpd_port;

}

sub lonhttpdurl {	sub lonhttpdurl {
	#
	# Had been used for "small fry" static images on separate port 8080.
	# Modify here if lightweight http functionality desired again.
	# Currently eliminated due to increasing firewall issues.
	#
my ($url)=@_;	my ($url)=@_;
	return $url;
my $lonhttpd_port = &lonhttpd_port();
if ($lonhttpd_port == 443) {
return 'https://'.$ENV{'SERVER_NAME'}.$url;
}
return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
}	}

sub connection_aborted {	sub connection_aborted {
Line 8490 sub init_user_environment {	Line 9363 sub init_user_environment {
}	}
# Give them a new cookie	# Give them a new cookie
my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}	my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}
: $now);	: $now.$$.int(rand(10000)));
$cookie="$username\_$id\_$domain\_$authhost";	$cookie="$username\_$id\_$domain\_$authhost";

# Initialize roles	# Initialize roles
Line 8605 sub init_user_environment {	Line 9478 sub init_user_environment {

sub _add_to_env {	sub _add_to_env {
my ($idf,$env_data,$prefix) = @_;	my ($idf,$env_data,$prefix) = @_;
while (my ($key,$value) = each(%$env_data)) {	if (ref($env_data) eq 'HASH') {
$idf->{$prefix.$key} = $value;	while (my ($key,$value) = each(%$env_data)) {
$env{$prefix.$key} = $value;	$idf->{$prefix.$key} = $value;
	$env{$prefix.$key} = $value;
	}
}	}
}	}

	# --- Get the symbolic name of a problem and the url
	sub get_symb {
	my ($request,$silent) = @_;
	(my $url=$env{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}\|$ENV{'HTTP_HOST'})--;
	my $symb=($env{'form.symb'} ne '' ? $env{'form.symb'} : (&Apache::lonnet::symbread($url)));
	if ($symb eq '') {
	if (!$silent) {
	$request->print("Unable to handle ambiguous references:$url:.");
	return ();
	}
	}
	&Apache::lonenc::check_decrypt(\$symb);
	return ($symb);
	}

	# --------------------------------------------------------------Get annotation

	sub get_annotation {
	my ($symb,$enc) = @_;

	my $key = $symb;
	if (!$enc) {
	$key =
	&Apache::lonnet::clutter((&Apache::lonnet::decode_symb($symb))[2]);
	}
	my %annotation=&Apache::lonnet::get('nohist_annotations',[$key]);
	return $annotation{$key};
	}

	sub clean_symb {
	my ($symb) = @_;

	&Apache::lonenc::check_decrypt(\$symb);
	my $enc = $env{'request.enc'};
	delete($env{'request.enc'});

	return ($symb,$enc);
	}

=pod	=pod

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

Removed from v.1.636.2.3
changed lines
	Added in v.1.692.2.1