version 1.11, 2004/12/17 22:40:24
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version 1.22, 2008/11/11 16:06:46
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# |
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# http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
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# (TeX Content Handler |
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# 05/29/00,05/30,10/11 Gerd Kortemeyer) |
=head1 NAME |
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# 10/11,10/12,10/16 Gerd Kortemeyer |
Apache::lonambiguous |
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=head1 SYNOPSIS |
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Handler to resolve ambiguous file locations. |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 HANDLER SUBROUTINE |
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make_symb() |
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and |
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handler() |
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=head1 OTHER SUBROUTINES |
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=over |
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=item * |
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cleanup() |
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=item * |
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getlost() |
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=back |
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=cut |
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package Apache::lonambiguous; |
package Apache::lonambiguous; |
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Line 49 sub cleanup {
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Line 80 sub cleanup {
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&Apache::lonnet::logthis('Failed cleanup ambiguous: bighash'); |
&Apache::lonnet::logthis('Failed cleanup ambiguous: bighash'); |
} |
} |
} |
} |
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return OK; |
} |
} |
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# ----------------------------------------------------------- Could not resolve |
# ----------------------------------------------------------- Could not resolve |
Line 56 sub cleanup {
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Line 88 sub cleanup {
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sub getlost { |
sub getlost { |
my ($r,$errmsg)=@_; |
my ($r,$errmsg)=@_; |
$errmsg=&mt($errmsg); |
$errmsg=&mt($errmsg); |
$r->content_type('text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
$r->send_http_header; |
$r->send_http_header; |
$r->print( |
$r->print(&Apache::loncommon::start_page('Could not handle ambiguous resource reference'). |
'<head><title>Unknown Error</title></head>'. |
$errmsg. |
&Apache::loncommon::bodytag('Could not handle ambiguous resource reference'). |
&Apache::loncommon::end_page()); |
$errmsg. |
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'</body></html>'); |
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} |
} |
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# ================================================================ Main Handler |
# ================================================================ Main Handler |
Line 87 sub handler {
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Line 117 sub handler {
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# ---------------------------------------------------------- Is this selecting? |
# ---------------------------------------------------------- Is this selecting? |
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if ($ENV{'form.selecturl'}) { |
if ($env{'form.selecturl'}) { |
my $envkey; |
my $envkey; |
if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db', |
&GDBM_READER(),0640)) { |
&GDBM_READER(),0640)) { |
foreach $envkey (keys %ENV) { |
foreach $envkey (keys %env) { |
if ($envkey=~/^form\.(\d+)\.(\d+)$/) { |
if ($envkey=~/^form\.(\d+)\.(\d+)$/) { |
# ---------------------------------------------------- Update symb and redirect |
# ---------------------------------------------------- Update symb and redirect |
my $mapid=$1; |
my $mapid=$1; |
my $resid=$2; |
my $resid=$2; |
my $resurl=$bighash{'src_'.$mapid.'.'.$resid}; |
my $resurl=$bighash{'src_'.$mapid.'.'.$resid}; |
&Apache::lonnet::symblist($bighash{'map_id_'.$mapid}, |
&Apache::lonnet::symblist($bighash{'map_id_'.$mapid}, |
$resurl => $resid); |
$resurl => [$resurl,$resid]); |
untie(%bighash); |
untie(%bighash); |
$r->header_out(Location => |
$r->header_out(Location => |
'http://'.$ENV{'HTTP_HOST'}.$resurl); |
&Apache::lonnet::absolute_url().$resurl); |
return REDIRECT; |
return REDIRECT; |
} |
} |
} |
} |
Line 115 sub handler {
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Line 145 sub handler {
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# ---------------------------------------------------------- Do we have a case? |
# ---------------------------------------------------------- Do we have a case? |
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my $thisfn; |
my $thisfn; |
unless (($thisfn=$ENV{'request.ambiguous'})&&($ENV{'request.course.fn'})) { |
unless (($thisfn=$env{'request.ambiguous'})&&($env{'request.course.fn'})) { |
&getlost($r,'Could not find information on resource.'); |
&getlost($r,'Could not find information on resource.'); |
return OK; |
return OK; |
} |
} |
Line 126 sub handler {
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Line 156 sub handler {
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my %hash; |
my %hash; |
my $syval=''; |
my $syval=''; |
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if (tie(%hash,'GDBM_File',$ENV{'request.course.fn'}.'_symb.db', |
if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db', |
&GDBM_READER(),0640)) { |
&GDBM_READER(),0640)) { |
$syval=$hash{$thisfn}; |
$syval=$hash{$thisfn}; |
untie(%hash); |
untie(%hash); |
Line 135 sub handler {
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Line 165 sub handler {
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# ---------------------------------------------------------- There was an entry |
# ---------------------------------------------------------- There was an entry |
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if ($syval) { |
if ($syval) { |
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my ($page,undef,$res)=&Apache::lonnet::decode_symb($syval); |
if ($syval=~/\_$/) { |
if ($res eq 'page') { |
# ----------------------------------- Okay, this should have appeared on a page |
# ----------------------------------- Okay, this should have appeared on a page |
$syval=~s/\_\_\_$//; |
&Apache::loncommon::content_type($r,'text/html'); |
$r->content_type('text/html'); |
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$r->header_out(Location => |
$r->header_out(Location => |
'http://'.$ENV{'HTTP_HOST'}.'/res/'.$syval); |
&Apache::lonnet::absolute_url(). |
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&Apache::lonnet::clutter($page)); |
return REDIRECT; |
return REDIRECT; |
} else { |
} else { |
# There is not really a problem (???), but cannot go back without endless loop |
# There is not really a problem (???), but cannot go back without endless loop |
Line 149 sub handler {
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Line 179 sub handler {
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return OK; |
return OK; |
} |
} |
} |
} |
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# ------------------------------------Encrypted requests go straight to navmaps |
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if ($env{'request.enc'}) { |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->header_out(Location => |
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&Apache::lonnet::absolute_url().'/adm/navmaps'); |
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return REDIRECT; |
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} |
# ------------------------------------------------ Would be standalone resource |
# ------------------------------------------------ Would be standalone resource |
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if (tie(%bighash,'GDBM_File',$ENV{'request.course.fn'}.'.db', |
if (tie(%bighash,'GDBM_File',$env{'request.course.fn'}.'.db', |
&GDBM_READER(),0640)) { |
&GDBM_READER(),0640)) { |
# ---------------------------------------------- Get ID(s) for current resource |
# ---------------------------------------------- Get ID(s) for current resource |
my $ids=$bighash{'ids_'.&Apache::lonnet::clutter($thisfn)}; |
my $ids=$bighash{'ids_'.&Apache::lonnet::clutter($thisfn)}; |
Line 173 sub handler {
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Line 209 sub handler {
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} |
} |
if ($couldbe) { |
if ($couldbe) { |
@possibilities=split(/\,/,$couldbe); |
@possibilities=split(/\,/,$couldbe); |
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if ($#possibilities==0) { |
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my $id=$possibilities[0]; |
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my $resurl=$bighash{'src_'.$id}; |
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my $mapurl=$bighash{'map_id_'.(split(/\./,$id))[0]}; |
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my $symb=&make_symb($id); |
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&Apache::loncommon::content_type($r,'text/html'); |
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$r->header_out(Location => |
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&Apache::lonnet::absolute_url(). |
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$resurl.'?symb='.$symb); |
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return REDIRECT; |
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} |
if ($#possibilities>0) { |
if ($#possibilities>0) { |
# ----------------------------------------------- Okay, really multiple choices |
# ----------------------------------------------- Okay, really multiple choices |
$r->content_type('text/html'); |
&Apache::loncommon::content_type($r,'text/html'); |
$r->send_http_header; |
$r->send_http_header; |
my $bodytag= |
my $start_page= |
&Apache::loncommon::bodytag('Pick Instance of Resource'); |
&Apache::loncommon::start_page('Pick Instance of Resource'); |
$r->print(<<ENDSTART); |
$r->print(<<ENDSTART); |
<head><title>Choose Location</title></head> |
$start_page |
$bodytag |
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The resource you had been accessing appears more than once in this course, |
The resource you had been accessing appears more than once in this course, |
and LON-CAPA has insufficient session information to determine which instance |
and LON-CAPA has insufficient session information to determine which instance |
of the resource you meant. |
of the resource you meant. |
Line 201 ENDSTART
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Line 247 ENDSTART
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&Apache::lonnet::gettitle($mapurl).' '. |
&Apache::lonnet::gettitle($mapurl).' '. |
'</td></tr>'); |
'</td></tr>'); |
} @possibilities; |
} @possibilities; |
$r->print('</table></body></html>'); |
$r->print('</table>'.&Apache::loncommon::end_page()); |
untie(%bighash); |
untie(%bighash); |
return OK; |
return OK; |
} |
} |