1: # The LON-CAPA Grading handler
2: # 2/9,2/13 Guy Albertelli
3:
4: package Apache::grades;
5: use strict;
6: use Apache::style;
7: use Apache::lonxml;
8: use Apache::lonnet;
9: use Apache::loncommon;
10: use Apache::lonhomework;
11: use Apache::Constants qw(:common);
12:
13: sub moreinfo {
14: my ($request,$reason) = @_;
15: $request->print("Unable to process request: $reason");
16: $request->print('<form action="/adm/grades" method="post">'."\n");
17: $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'"></input>'."\n");
18: $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'"></input>'."\n");
19: $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'"></input>'."<br />\n");
20: $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'"></input>'."<br />\n");
21: $request->print('<input type="submit" name="submit" value="ReSubmit"></input>'."<br />\n");
22: $request->print('</form>');
23: }
24:
25:
26: #FIXME - needs to be much smarter
27: sub finduser {
28: my ($name) = @_;
29: return ($name,$ENV{'user.domain'});
30: }
31:
32: sub submission {
33: my ($request) = @_;
34: my $url=$ENV{'form.url'};
35: $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
36: if ($ENV{'form.student'} eq '') { &moreinfo($request,"Need student login id"); return ''; }
37: my ($uname,$udom) = &finduser($ENV{'form.student'});
38: if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }
39: my $symb=&Apache::lonnet::symbread($url);
40: if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
41: my $home=&Apache::lonnet::homeserver($uname,$udom);
42: my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,$home,
43: $ENV{'request.course.id'});
44: my $result="<h2> Submission Record </h2> $uname:$udom for $url".$answer;
45: return $result;
46: }
47:
48: sub send_header {
49: my ($request)= @_;
50: $request->print(&Apache::lontexconvert::header());
51: $request->print("
52: <script>
53: remotewindow=open('','homeworkremote');
54: remotewindow.close();
55: </script>");
56: $request->print('<body bgcolor="#FFFFFF">');
57: }
58:
59: sub send_footer {
60: my ($request)= @_;
61: $request->print('</body>');
62: $request->print(&Apache::lontexconvert::footer());
63: }
64:
65: sub handler {
66: my $request=$_[0];
67:
68: if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}
69:
70: if ($ENV{'browser.mathml'}) {
71: $request->content_type('text/xml');
72: } else {
73: $request->content_type('text/html');
74: }
75: $request->send_http_header;
76: return OK if $request->header_only;
77: my $url=$ENV{'form.url'};
78: my $command=$ENV{'form.command'};
79:
80: &send_header($request);
81: if ($url eq '') {
82: $request->print("Non-Contextual Access Unsupported:$command:$url:");
83: } else {
84: $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$url);
85: if ($command eq 'submission') {
86: $request->print(&submission($request));
87: } else {
88: $request->print("Unknown action:$command:");
89: }
90: }
91: &send_footer($request);
92: return OK;
93: }
94:
95: 1;
96:
97: __END__;
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