$lt{'wel'}
-$lt{'mes'}
-$lt{'pro'}
+$welcome
+$loginhelp
$remoteinfo
$maincall
$continuelink
$end_page
ENDSUCCESS
+ return;
}
# --------------------------------------------------------------- Failed login!
sub failed {
my ($r,$message,$form) = @_;
- my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,
- {'no_inline_link' => 1,});
- my $retry = '/adm/login?username='.$form->{'uname'}.
- '&domain='.$form->{'udom'};
+ (undef,undef,undef,my $clientmathml,my $clientunicode) =
+ &Apache::loncommon::decode_user_agent();
+ my $args = {};
+ if ($clientunicode && !$clientmathml) {
+ $args = {'browser.unicode' => 1};
+ }
+
+ my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
+ my $uname = &Apache::loncommon::cleanup_html($form->{'uname'});
+ my $udom = &Apache::loncommon::cleanup_html($form->{'udom'});
+ if (&Apache::lonnet::domain($udom,'description') eq '') {
+ undef($udom);
+ }
+ my $retry = '/adm/login';
+ if ($uname eq $form->{'uname'}) {
+ $retry .= '?username='.$uname;
+ }
+ if ($udom) {
+ $retry .= (($retry=~/\?/)?'&':'?').'domain='.$udom;
+ }
if (exists($form->{role})) {
- $retry .= '&role='.$form->{role};
+ my $role = &Apache::loncommon::cleanup_html($form->{role});
+ if ($role ne '') {
+ $retry .= (($retry=~/\?/)?'&':'?').'role='.$role;
+ }
}
if (exists($form->{symb})) {
- $retry .= '&symb='.$form->{symb};
+ my $symb = &Apache::loncommon::cleanup_html($form->{symb});
+ if ($symb ne '') {
+ $retry .= (($retry=~/\?/)?'&':'?').'symb='.$symb;
+ }
}
- my $end_page = &Apache::loncommon::end_page();
+ my $end_page = &Apache::loncommon::end_page();
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
+ my @actions =
+ (&mt('Please [_1]log in again[_2].','',''));
+ my $loginhelp = &loginhelpdisplay($udom);
+ if ($loginhelp) {
+ push(@actions, ''.&mt('Login problems?').'');
+ }
+ #FIXME: link to helpdesk might be added here
+
$r->print(
$start_page
- .''.&mt('Sorry ...').'
'
- .''.&mt($message).'
'
- .''.&mt('Please [_1]log in again[_2].','','')
- .'
'
- .''.&mt('Login problems?').'
'
+ .''.&mt('Sorry ...').'
'
+ .&Apache::lonhtmlcommon::confirm_success(&mt($message),1).'
'
+ .&Apache::lonhtmlcommon::actionbox(\@actions)
.$end_page
);
}
@@ -188,18 +262,18 @@ sub reroute {
my ($r) = @_;
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
- my $msg=''.&mt('Sorry ...').'
'
+ my $msg=''.&mt('Sorry ...').'
'
.&mt('Please [_1]log in again[_2].');
- &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
+ &Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1});
}
# ---------------------------------------------------------------- Main handler
sub handler {
my $r = shift;
- my $form;
+ my $londocroot = $r->dir_config('lonDocRoot');
# Are we re-routing?
- if (-e '/home/httpd/html/lon-status/reroute.txt') {
+ if (-e "$londocroot/lon-status/reroute.txt") {
&reroute($r);
return OK;
}
@@ -209,23 +283,33 @@ sub handler {
# -------------------------------- Prevent users from attempting to login twice
my $handle = &Apache::lonnet::check_for_valid_session($r);
if ($handle ne '') {
+ my $lonidsdir=$r->dir_config('lonIDsDir');
+ if ($handle=~/^publicuser\_/) {
+# For "public user" - remove it, we apparently really want to login
+ unlink($r->dir_config('lonIDsDir')."/$handle.id");
+ } else {
# Indeed, a valid token is found
- &Apache::loncommon::content_type($r,'text/html');
- $r->send_http_header;
- my $start_page =
- &Apache::loncommon::start_page('Already logged in');
- my $end_page =
- &Apache::loncommon::end_page();
- $r->print(
- $start_page
- .''.&mt('You are already logged in!').'
'
- .''.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
- ,'','','','')
- .'
'
- .''.&mt('Login problems?').'
'
- .$end_page
- );
- return OK;
+ &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->send_http_header;
+ my $start_page =
+ &Apache::loncommon::start_page('Already logged in');
+ my $end_page =
+ &Apache::loncommon::end_page();
+ my $dest = '/adm/roles';
+ if ($env{'form.firsturl'} ne '') {
+ $dest = $env{'form.firsturl'};
+ }
+ $r->print(
+ $start_page
+ .''.&mt('You are already logged in!').'
'
+ .''.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
+ ,'','','','')
+ .'
'
+ .$end_page
+ );
+ return OK;
+ }
}
# ---------------------------------------------------- No valid token, continue
@@ -241,7 +325,7 @@ sub handler {
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
$form{$name}=$value;
- }
+ }
if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
&failed($r,'Username, password and domain need to be specified.',
@@ -251,10 +335,11 @@ sub handler {
# split user logging in and "su"-user
- ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
+ ($form{'uname'},$form{'suname'},$form{'sudom'})=split(/\:/,$form{'uname'});
$form{'uname'} = &LONCAPA::clean_username($form{'uname'});
$form{'suname'}= &LONCAPA::clean_username($form{'suname'});
- $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
+ $form{'udom'} = &LONCAPA::clean_domain($form{'udom'});
+ $form{'sudom'} = &LONCAPA::clean_domain($form{'sudom'});
my $role = $r->dir_config('lonRole');
my $domain = $r->dir_config('lonDefDomain');
@@ -266,7 +351,8 @@ sub handler {
my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
$form{'serverid'});
- if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
+ if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
+ ($tmpinfo eq 'no_such_host')) {
&failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
return OK;
} else {
@@ -284,109 +370,162 @@ sub handler {
return OK;
}
- my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
+ my ($key,$firsturl,$rolestr,$symbstr,$iptokenstr)=split(/&/,$tmpinfo);
if ($rolestr) {
$rolestr = &unescape($rolestr);
}
if ($symbstr) {
$symbstr= &unescape($symbstr);
}
+ if ($iptokenstr) {
+ $iptokenstr = &unescape($iptokenstr);
+ }
if ($rolestr =~ /^role=/) {
(undef,$form{'role'}) = split('=',$rolestr);
}
if ($symbstr =~ /^symb=/) {
(undef,$form{'symb'}) = split('=',$symbstr);
}
-
- my $keybin=pack("H16",$key);
-
- my $cipher;
- if ($Crypt::DES::VERSION>=2.03) {
- $cipher=new Crypt::DES $keybin;
- }
- else {
- $cipher=new DES $keybin;
+ if ($iptokenstr =~ /^iptoken=/) {
+ (undef,$form{'iptoken'}) = split('=',$iptokenstr);
}
- my $upass='';
- for (my $i=0;$i<=2;$i++) {
- my $chunk=
- $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
-
- $chunk.=
- $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
- $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
- $upass.=$chunk;
- }
+ my $upass = &Apache::loncommon::des_decrypt($key,$form{'upass0'});
# ---------------------------------------------------------------- Authenticate
- my @cancreate;
+
my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
- if (ref($domconfig{'usercreation'}) eq 'HASH') {
- if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
- if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
- @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
- } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') &&
- ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
- @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
- }
- }
- }
+ my ($cancreate,$statustocreate) =
+ &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
my $defaultauth;
- if (grep(/^login$/,@cancreate)) {
- $defaultauth = 1;
+ if (ref($cancreate) eq 'ARRAY') {
+ if (grep(/^login$/,@{$cancreate})) {
+ $defaultauth = 1;
+ }
}
- my $uname = $form{'uname'};
- my $authhost=Apache::lonnet::authenticate($uname,$upass,
- $form{'udom'},$defaultauth);
+ my $clientcancheckhost = 1;
+ my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
+ $form{'udom'},$defaultauth,
+ $clientcancheckhost);
# --------------------------------------------------------------------- Failed?
if ($authhost eq 'no_host') {
- my $lc_uname = lc($form{'uname'});
- if ($uname eq $lc_uname) {
- &failed($r,'Username and/or password could not be authenticated.',
- \%form);
- return OK;
- } else {
- $authhost=Apache::lonnet::authenticate($lc_uname,$upass,
- $form{'udom'},$defaultauth);
- if ($authhost eq 'no_host') {
- &failed($r,'Username (in lower case) and/or password could not be authenticated.',
- \%form);
- return OK;
- } elsif ($authhost eq 'no_account_on_host') {
- &create_account($r,\%form,\@cancreate,$lc_uname,$contact_name);
+ &failed($r,'Username and/or password could not be authenticated.',
+ \%form);
+ return OK;
+ } elsif ($authhost eq 'no_account_on_host') {
+ if ($defaultauth) {
+ my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
+ unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
return OK;
- } else {
- $form{'uname'} = $lc_uname;
}
+ my $start_page =
+ &Apache::loncommon::start_page('Create a user account in LON-CAPA',
+ '',{'no_inline_link' => 1,});
+ my $lonhost = $r->dir_config('lonHostID');
+ my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
+ my $contacts =
+ &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
+ $form{'udom'},$origmail);
+ my ($contact_email) = split(',',$contacts);
+ my $output =
+ &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
+ $domdesc,'',$lonhost,
+ $contact_email,$contact_name,
+ undef,$statustocreate);
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->send_http_header;
+ &Apache::createaccount::print_header($r,$start_page);
+ $r->print(''.&mt('Account creation').'
'.
+ &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'
'.
+ $output.&Apache::loncommon::end_page());
+ return OK;
+ } else {
+ &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',\%form);
+ return OK;
}
- } elsif ($authhost eq 'no_account_on_host') {
- &create_account($r,\%form,\@cancreate,$uname);
- return OK;
}
if (($firsturl eq '') ||
($firsturl=~/^\/adm\/(logout|remote)/)) {
$firsturl='/adm/roles';
}
+
+ my $hosthere;
+ if ($form{'iptoken'}) {
+ my %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
+ my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
+ if (($sessiondata{'domain'} eq $form{'udom'}) &&
+ ($sessiondata{'username'} eq $form{'uname'})) {
+ $hosthere = 1;
+ }
+ }
+
# --------------------------------- Are we attempting to login as somebody else?
if ($form{'suname'}) {
+ my ($suname,$sudom,$sudomref);
+ $suname = $form{'suname'};
+ $sudom = $form{'udom'};
+ if ($form{'sudom'}) {
+ unless ($sudom eq $form{'sudom'}) {
+ if (&Apache::lonnet::domain($form{'sudom'})) {
+ $sudomref = [$form{'sudom'}];
+ $sudom = $form{'sudom'};
+ }
+ }
+ }
# ------------ see if the original user has enough privileges to pull this stunt
- if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
+ if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'},$sudomref)) {
# ---------------------------------------------------- see if the su-user exists
- unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
- eq 'no_host') {
- &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
+ unless (&Apache::lonnet::homeserver($suname,$sudom) eq 'no_host') {
# ------------------------------ see if the su-user is not too highly privileged
- unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
+ if (&Apache::lonnet::privileged($suname,$sudom)) {
+ &Apache::lonnet::logthis('Attempted switch user to privileged user');
+ } else {
+ my $noprivswitch;
+#
+# su-user's home server and user's home server must have one of:
+# (a) same domain
+# (b) same primary library server for the two domains
+# (c) same "internet domain" for primary library server(s) for home servers' domains
+#
+ my $suprim = &Apache::lonnet::domain($sudom,'primary');
+ my $suintdom = &Apache::lonnet::internet_dom($suprim);
+ unless ($sudom eq $form{'udom'}) {
+ my $uprim = &Apache::lonnet::domain($form{'udom'},'primary');
+ my $uintdom = &Apache::lonnet::internet_dom($uprim);
+ unless ($suprim eq $uprim) {
+ unless ($suintdom eq $uintdom) {
+ &Apache::lonnet::logthis('Attempted switch user '
+ .'to user with different "internet domain".');
+ $noprivswitch = 1;
+ }
+ }
+ }
+
+ unless ($noprivswitch) {
+#
+# server where log-in occurs must have same "internet domain" as su-user's home
+# server
+#
+ my $lonhost = $r->dir_config('lonHostID');
+ my $hostintdom = &Apache::lonnet::internet_dom($lonhost);
+ if ($hostintdom ne $suintdom) {
+ &Apache::lonnet::logthis('Attempted switch user on a '
+ .'server with a different "internet domain".');
+ } else {
+
# -------------------------------------------------------- actually switch users
- &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
- ' logging in as '.$form{'suname'});
- $form{'uname'}=$form{'suname'};
- } else {
- &Apache::lonnet::logthis('Attempted switch user to privileged user');
+
+ &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.
+ $form{'udom'}.' logging in as '.$suname.':'.$sudom);
+ $form{'uname'}=$suname;
+ if ($form{'udom'} ne $sudom) {
+ $form{'udom'}=$sudom;
+ }
+ }
+ }
}
}
} else {
@@ -394,45 +533,210 @@ sub handler {
}
}
- if ($r->dir_config("lonBalancer") eq 'yes') {
- &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
- \%form);
- $r->internal_redirect('/adm/switchserver');
+ my ($is_balancer,$otherserver);
+
+ unless ($hosthere) {
+ ($is_balancer,$otherserver) =
+ &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'},'login');
+ if ($is_balancer) {
+ # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
+ my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r);
+ if (($found_server) && ($balancer_cookie =~ /^\Q$env{'user.domain'}\E_\Q$env{'user.name'}\E_/)) {
+ $otherserver = $found_server;
+ }
+ if ($otherserver eq '') {
+ my $lowest_load;
+ ($otherserver,undef,undef,undef,$lowest_load) = &Apache::lonnet::choose_server($form{'udom'});
+ if ($lowest_load > 100) {
+ $otherserver = &Apache::lonnet::spareserver($lowest_load,$lowest_load,1,$form{'udom'});
+ }
+ }
+ if ($otherserver ne '') {
+ my @hosts = &Apache::lonnet::current_machine_ids();
+ if (grep(/^\Q$otherserver\E$/,@hosts)) {
+ $hosthere = $otherserver;
+ }
+ }
+ }
+ }
+
+ if (($is_balancer) && (!$hosthere)) {
+ if ($otherserver) {
+ &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
+ \%form);
+ my $switchto = '/adm/switchserver?otherserver='.$otherserver;
+ if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
+ $switchto .= '&origurl='.$firsturl;
+ }
+ if ($form{'role'}) {
+ $switchto .= '&role='.$form{'role'};
+ }
+ if ($form{'symb'}) {
+ $switchto .= '&symb='.$form{'symb'};
+ }
+ $r->internal_redirect($switchto);
+ } else {
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->send_http_header;
+ $r->print(&noswitch());
+ }
+ return OK;
} else {
- &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
- \%form);
+ if (!&check_can_host($r,\%form,$authhost)) {
+ my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
+ if ($otherserver) {
+ &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
+ \%form);
+ my $switchto = '/adm/switchserver?otherserver='.$otherserver;
+ if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
+ $switchto .= '&origurl='.$firsturl;
+ }
+ if ($form{'role'}) {
+ $switchto .= '&role='.$form{'role'};
+ }
+ if ($form{'symb'}) {
+ $switchto .= '&symb='.$form{'symb'};
+ }
+ $r->internal_redirect($switchto);
+ } else {
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->send_http_header;
+ $r->print(&noswitch());
+ }
+ return OK;
+ }
+
+# ------------------------------------------------------- Do the load balancing
+
+# ---------------------------------------------------------- Determine own load
+ my $loadlim = $r->dir_config('lonLoadLim');
+ my $loadavg;
+ {
+ my $loadfile=Apache::File->new('/proc/loadavg');
+ $loadavg=<$loadfile>;
+ }
+ $loadavg =~ s/\s.*//g;
+ my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
+ my $userloadpercent=&Apache::lonnet::userload();
+
+# ---------------------------------------------------------- Are we overloaded?
+ if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
+ my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'});
+ if (!$unloaded) {
+ ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
+ }
+ if ($unloaded) {
+ &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
+ undef,\%form);
+ $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
+ return OK;
+ }
+ }
+ if (($is_balancer) && ($hosthere)) {
+ $form{'noloadbalance'} = $hosthere;
+ }
+ &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
+ \%form);
+ return OK;
}
- return OK;
}
-sub create_account {
- my ($r,$form,$cancreate,$uname,$contact_name) = @_;
- return unless((ref($form) eq 'HASH') && (ref($cancreate) eq 'ARRAY'));
- my %domconfig =
- &Apache::lonnet::get_dom('configuration',['usercreation'],$form->{'udom'});
- if (grep(/^login$/,@{$cancreate})) {
- my $start_page =
- &Apache::loncommon::start_page('Create a user account in LON-CAPA',
- '',{'no_inline_link' => 1,});
- my $domdesc = &Apache::lonnet::domain($form->{'udom'},'description');
- my $lonhost = $r->dir_config('lonHostID');
- my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
- my $contacts =
- &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
- $form->{'udom'},$origmail);
- my ($contact_email) = split(',',$contacts);
- my $output =
- &Apache::createaccount::username_check($uname,$form->{'udom'},
- $domdesc,'',$lonhost,
- $contact_email,$contact_name);
- &Apache::loncommon::content_type($r,'text/html');
- $r->send_http_header;
- &Apache::createaccount::print_header($r,$start_page);
- $r->print(''.&mt('Account creation').'
'.
- &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'
'.
- $output.&Apache::loncommon::end_page());
- } else {
- &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',$form);
+sub check_can_host {
+ my ($r,$form,$authhost,$domdesc) = @_;
+ return unless (ref($form) eq 'HASH');
+ my $canhost = 1;
+ my $lonhost = $r->dir_config('lonHostID');
+ my $udom = $form->{'udom'};
+ my @intdoms;
+ my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
+ if (ref($internet_names) eq 'ARRAY') {
+ @intdoms = @{$internet_names};
+ }
+ my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
+ my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
+ unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
+ my $machine_dom = &Apache::lonnet::host_domain($lonhost);
+ my $hostname = &Apache::lonnet::hostname($lonhost);
+ my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
+ my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
+ my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
+ my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
+ my $loncaparev;
+ if ($authhost eq 'no_account_on_host') {
+ $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
+ } else {
+ $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
+ }
+ $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
+ $udomdefaults{'remotesessions'},
+ $defdomdefaults{'hostedsessions'});
+ }
+ unless ($canhost) {
+ if ($authhost eq 'no_account_on_host') {
+ my $checkloginvia = 1;
+ my ($login_host,$hostname) =
+ &Apache::lonnet::choose_server($udom,$checkloginvia);
+ &Apache::loncommon::content_type($r,'text/html');
+ $r->send_http_header;
+ if ($login_host ne '') {
+ my $protocol = $Apache::lonnet::protocol{$login_host};
+ $protocol = 'http' if ($protocol ne 'https');
+ my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
+ $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
+ ''.&mt('Account creation').'
'.
+ &mt('You do not currently have a LON-CAPA account at this institution.').'
'.
+ ''.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'
'.
+ ''.&mt('[_1]Log in[_2]','','').
+ &Apache::loncommon::end_page());
+ } else {
+ $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
+ '
'.&mt('Account creation unavailable').'
'.
+ &mt('You do not currently have a LON-CAPA account at this institution.').'
'.
+ ''.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'
'.
+ &Apache::loncommon::end_page());
+ }
+ } else {
+ &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
+ $form);
+ my ($otherserver) = &Apache::lonnet::choose_server($udom);
+ $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
+ }
+ }
+ return $canhost;
+}
+
+sub noswitch {
+ my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
+ ''.&mt('Session unavailable').'
'.
+ &mt('This LON-CAPA server is unable to host your session.').'
'.
+ ''.&mt('Currently no other LON-CAPA server is available to host your session either.').'
'.
+ &Apache::loncommon::end_page();
+ return $result;
+}
+
+sub loginhelpdisplay {
+ my ($authdomain) = @_;
+ my $login_help = 1;
+ my $lang = &Apache::lonlocal::current_language();
+ if ($login_help) {
+ my $dom = $authdomain;
+ if ($dom eq '') {
+ $dom = &Apache::lonnet::default_login_domain();
+ }
+ my %domconfhash = &Apache::loncommon::get_domainconf($dom);
+ my $loginhelp_url;
+ if ($lang) {
+ $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
+ if ($loginhelp_url ne '') {
+ return $loginhelp_url;
+ }
+ }
+ $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
+ if ($loginhelp_url ne '') {
+ return $loginhelp_url;
+ } else {
+ return '/adm/loginproblems.html';
+ }
}
return;
}