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Provides link to Instructor2 alternate interface for instructors. --Mike
1 ################################################################################ 2 # WeBWorK mod_perl (c) 2000-2002 WeBWorK Project 3 # $Id$ 4 ################################################################################ 5 6 package WeBWorK; 7 8 =head1 NAME 9 10 WeBWorK - Dispatch requests to the appropriate ContentGenerator. 11 12 =cut 13 14 use strict; 15 use warnings; 16 use Apache::Constants qw(:common REDIRECT DONE); 17 use Apache::Request; 18 use WeBWorK::Authen; 19 use WeBWorK::Authz; 20 use WeBWorK::ContentGenerator::Feedback; 21 use WeBWorK::ContentGenerator::GatewayQuiz; 22 use WeBWorK::ContentGenerator::Hardcopy; 23 use WeBWorK::ContentGenerator::Instructor::Assigner; 24 use WeBWorK::ContentGenerator::Instructor::Index; 25 use WeBWorK::ContentGenerator::Instructor::Index2; 26 use WeBWorK::ContentGenerator::Instructor::PGProblemEditor; 27 use WeBWorK::ContentGenerator::Instructor::ProblemList; 28 use WeBWorK::ContentGenerator::Instructor::ProblemSetEditor; 29 use WeBWorK::ContentGenerator::Instructor::ProblemSetList; 30 use WeBWorK::ContentGenerator::Instructor::UserList; 31 use WeBWorK::ContentGenerator::Instructor::SendMail; 32 use WeBWorK::ContentGenerator::Instructor::ShowAnswers; 33 use WeBWorK::ContentGenerator::Instructor::Scoring; 34 use WeBWorK::ContentGenerator::Instructor::ScoringDownload; 35 use WeBWorK::ContentGenerator::Instructor::ScoringTotals; 36 use WeBWorK::ContentGenerator::Instructor::Stats; 37 use WeBWorK::ContentGenerator::Login; 38 use WeBWorK::ContentGenerator::Logout; 39 use WeBWorK::ContentGenerator::Options; 40 use WeBWorK::ContentGenerator::Problem; 41 use WeBWorK::ContentGenerator::ProblemSet; 42 use WeBWorK::ContentGenerator::ProblemSets; 43 use WeBWorK::ContentGenerator::Test; 44 use WeBWorK::CourseEnvironment; 45 use WeBWorK::DB; 46 use WeBWorK::Timing; 47 48 #sub dispatch($) { 49 # print STDERR "Executing &WeBWorK::dispatch\n"; 50 # return DECLINED; 51 #} 52 #1; 53 #__END__ 54 55 sub dispatch($) { 56 my ($apache) = @_; 57 my $r = Apache::Request->new($apache); 58 # have to deal with unpredictable GET or POST data, and sift 59 # through it for the key. So use Apache::Request 60 61 # This stuff is pretty much copied out of the O'Reilly mod_perl book. 62 # It's for figuring out the basepath. I may change this up if I find a 63 # better way to do it. 64 my $path_info = $r->path_info || ""; 65 $path_info =~ s!/+!/!g; # strip multiple forward slashes 66 my $current_uri = $r->uri; 67 my $args = $r->args; 68 69 my ($urlRoot) = $current_uri =~ m/^(.*)$path_info/; 70 71 # If it's a valid WeBWorK URI, it ends in a /. This is assumed 72 # alllll over the place. 73 unless (substr($current_uri,-1) eq '/') { 74 $r->header_out(Location => "$current_uri/" . ($args ? "?$args" : "")); 75 return REDIRECT; 76 # *** any post data gets lost here -- fix that. 77 # (actually, it's not a problem, since all URLs generated 78 # from within the system have trailing slashes, and we don't 79 # need POST data from outside the system anyway!) 80 } 81 82 # Create the @components array, which contains the path specified in the URL 83 my($junk, @components) = split "/", $path_info; 84 my $webwork_root = $r->dir_config('webwork_root'); # From a PerlSetVar in httpd.conf 85 my $pg_root = $r->dir_config('pg_root'); # From a PerlSetVar in httpd.conf 86 my $course = shift @components; 87 88 # Try to get the course environment. 89 my $ce = eval {WeBWorK::CourseEnvironment->new($webwork_root, $urlRoot, $pg_root, $course);}; 90 if ($@) { # If there was an error getting the requested course 91 die "Failed to read course environment for $course: $@"; 92 } 93 94 # If no course was specified, redirect to the home URL 95 unless (defined $course) { 96 $r->header_out(Location => $ce->{webworkURLs}->{home}); 97 return REDIRECT; 98 } 99 100 # Freak out if the requested course doesn't exist. For now, this is just a 101 # check to see if the course directory exists. 102 my $courseDir = $ce->{webworkDirs}->{courses} . "/$course"; 103 unless (-e $courseDir) { 104 die "Course directory for $course ($courseDir) not found. Perhaps the course does not exist?"; 105 } 106 107 # Bring up a connection to the database (for Authen/Authz, and eventually 108 # to be passed to content generators, when we clean this file up). 109 my $db = WeBWorK::DB->new($ce); 110 111 ### Begin dispatching ### 112 113 #my $dispatchTimer = WeBWorK::Timing->new(__PACKAGE__."::dispatch"); 114 #$dispatchTimer->start; 115 116 my $result; 117 # WeBWorK::Authen::verify erases the passwd field and sets the key field 118 # if login is successful. 119 if (!WeBWorK::Authen->new($r, $ce, $db)->verify) { 120 $result = WeBWorK::ContentGenerator::Login->new($r, $ce, $db)->go; 121 } else { 122 # After we are authenticated, there are some things that need to be 123 # sorted out, Authorization-wize, before we start dispatching to individual 124 # content generators. 125 my $user = $r->param("user"); 126 my $effectiveUser = $r->param("effectiveUser") || $user; 127 my $su_authorized = WeBWorK::Authz->new($r, $ce, $db)->hasPermissions($user, "become_student", $effectiveUser); 128 $effectiveUser = $user unless $su_authorized; 129 $r->param("effectiveUser", $effectiveUser); 130 131 my $arg = shift @components; 132 if (!defined $arg) { # We want the list of problem sets 133 $result = WeBWorK::ContentGenerator::ProblemSets->new($r, $ce, $db)->go; 134 } elsif ($arg eq "hardcopy") { 135 136 my $hardcopyArgument = shift @components; 137 $hardcopyArgument = "" unless defined $hardcopyArgument; 138 $WeBWorK::timer1 = WeBWorK::Timing->new("hardcopy: $hardcopyArgument"); 139 $WeBWorK::timer1->start; 140 141 my $result = WeBWorK::ContentGenerator::Hardcopy->new($r, $ce, $db)->go($hardcopyArgument); 142 $WeBWorK::timer1 ->stop; 143 $WeBWorK::timer1 ->save; 144 return $result; 145 } elsif ($arg eq "instructor2") { 146 my $instructorArgument = shift @components; 147 if (!defined $instructorArgument) { 148 $result = WeBWorK::ContentGenerator::Instructor::Index2->new($r, $ce, $db)->go; 149 } 150 } elsif ($arg eq "instructor") { 151 my $instructorArgument = shift @components; 152 if (!defined $instructorArgument) { 153 $result = WeBWorK::ContentGenerator::Instructor::Index->new($r, $ce, $db)->go; 154 } elsif ($instructorArgument eq "scoring") { 155 $result = WeBWorK::ContentGenerator::Instructor::Scoring->new($r, $ce, $db)->go; #FIXME!!!! 156 } elsif ($instructorArgument eq "scoringDownload") { 157 $result = WeBWorK::ContentGenerator::Instructor::ScoringDownload->new($r, $ce, $db)->go; 158 } elsif ($instructorArgument eq "scoring_totals") { 159 $result = WeBWorK::ContentGenerator::Instructor::ScoringTotals->new($r, $ce, $db)->go; 160 } elsif ($instructorArgument eq "users") { 161 $result = WeBWorK::ContentGenerator::Instructor::UserList->new($r, $ce, $db)->go; 162 } elsif ($instructorArgument eq "sets") { 163 my $setID = shift @components; 164 if (defined $setID) { 165 my $setArg = shift @components; 166 if (!defined $setArg) { 167 $result = WeBWorK::ContentGenerator::Instructor::ProblemSetEditor->new($r, $ce, $db)->go($setID); 168 } elsif ($setArg eq "problems") { 169 $result = WeBWorK::ContentGenerator::Instructor::ProblemList->new($r, $ce, $db)->go($setID); 170 } elsif ($setArg eq "users") { 171 $result = WeBWorK::ContentGenerator::Instructor::Assigner->new($r, $ce, $db)->go($setID); 172 } 173 } else { 174 $result = WeBWorK::ContentGenerator::Instructor::ProblemSetList->new($r, $ce, $db)->go; 175 } 176 } elsif ($instructorArgument eq "pgProblemEditor") { 177 $result = WeBWorK::ContentGenerator::Instructor::PGProblemEditor->new($r, $ce, $db)->go(@components); 178 } elsif ($instructorArgument eq "send_mail") { 179 $result = WeBWorK::ContentGenerator::Instructor::SendMail->new($r, $ce, $db)->go(@components); 180 } elsif ($instructorArgument eq "show_answers") { 181 $result = WeBWorK::ContentGenerator::Instructor::ShowAnswers->new($r, $ce, $db)->go(@components); 182 } elsif ($instructorArgument eq "stats") { 183 $result = WeBWorK::ContentGenerator::Instructor::Stats->new($r, $ce, $db)->go(@components); 184 } 185 } elsif ($arg eq "options") { 186 $result = WeBWorK::ContentGenerator::Options->new($r, $ce, $db)->go; 187 } elsif ($arg eq "feedback") { 188 $result = WeBWorK::ContentGenerator::Feedback->new($r, $ce, $db)->go; 189 } elsif ($arg eq "logout") { 190 $result = WeBWorK::ContentGenerator::Logout->new($r, $ce, $db)->go; 191 } elsif ($arg eq "test") { 192 $result = WeBWorK::ContentGenerator::Test->new($r, $ce, $db)->go; 193 } elsif ($arg eq "quiz_mode" ) { 194 # Gateway quiz capability -- very similar to problem set (initially) 195 $result = WeBWorK::ContentGenerator::GatewayQuiz->new($r, $ce, $db)->go(@components); 196 } else { # We've got the name of a problem set. 197 my $problem_set = $arg; 198 my $ps_arg = shift @components; 199 200 if (!defined $ps_arg) { 201 # list the problems in the problem set 202 $WeBWorK::timer0 = WeBWorK::Timing->new("Problem $course:$problem_set"); 203 $WeBWorK::timer0->start; 204 $result = WeBWorK::ContentGenerator::ProblemSet->new($r, $ce, $db)->go($problem_set); 205 $WeBWorK::timer0->continue("problem set listing is done"); 206 $WeBWorK::timer0->stop; 207 $WeBWorK::timer0->save; 208 } else { 209 # We've got the name of a problem 210 my $problem = $ps_arg; 211 212 $WeBWorK::timer0 = WeBWorK::Timing->new("Problem $course:$problem_set/$problem"); 213 $WeBWorK::timer0->start; 214 # my $pid = fork(); 215 # if ($pid) { 216 # wait; 217 # } else { 218 my $result = WeBWorK::ContentGenerator::Problem->new($r, $ce, $db)->go($problem_set, $problem); 219 # $WeBWorK::timer0->continue("Exiting child process"); 220 # #$WeBWorK::timer0->stop; 221 # #$WeBWorK::timer0->save; 222 # eval{ APACHE::exit(0);} || warn "Error in leaving child |$@|"; 223 # # We REALLY REALLY want this grandchild to exit. But not the child. How to do this 224 # # cleanly???? FIXME 225 # } 226 $WeBWorK::timer0->continue("Problem done)"); 227 $WeBWorK::timer0->stop; 228 $WeBWorK::timer0->save; 229 return $result; 230 231 232 } 233 } 234 } 235 236 #$dispatchTimer->stop; 237 238 return $result; 239 } 240 241 1;
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