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| 1 : | sh002i | 986 | ################################################################################ |
| 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 : | gage | 1377 | use Apache::Constants qw(:common REDIRECT DONE); |
| 17 : | sh002i | 986 | use Apache::Request; |
| 18 : | use WeBWorK::Authen; | ||
| 19 : | use WeBWorK::Authz; | ||
| 20 : | use WeBWorK::ContentGenerator::Feedback; | ||
| 21 : | sh002i | 1195 | use WeBWorK::ContentGenerator::GatewayQuiz; |
| 22 : | sh002i | 986 | use WeBWorK::ContentGenerator::Hardcopy; |
| 23 : | sh002i | 1195 | use WeBWorK::ContentGenerator::Instructor::Assigner; |
| 24 : | sh002i | 986 | use WeBWorK::ContentGenerator::Instructor::Index; |
| 25 : | use WeBWorK::ContentGenerator::Instructor::PGProblemEditor; | ||
| 26 : | sh002i | 1195 | use WeBWorK::ContentGenerator::Instructor::ProblemList; |
| 27 : | sh002i | 986 | use WeBWorK::ContentGenerator::Instructor::ProblemSetEditor; |
| 28 : | use WeBWorK::ContentGenerator::Instructor::ProblemSetList; | ||
| 29 : | use WeBWorK::ContentGenerator::Instructor::UserList; | ||
| 30 : | gage | 1377 | use WeBWorK::ContentGenerator::Instructor::SendMail; |
| 31 : | gage | 1395 | use WeBWorK::ContentGenerator::Instructor::ShowAnswers; |
| 32 : | sh002i | 986 | use WeBWorK::ContentGenerator::Login; |
| 33 : | use WeBWorK::ContentGenerator::Logout; | ||
| 34 : | use WeBWorK::ContentGenerator::Options; | ||
| 35 : | use WeBWorK::ContentGenerator::Problem; | ||
| 36 : | use WeBWorK::ContentGenerator::ProblemSet; | ||
| 37 : | use WeBWorK::ContentGenerator::ProblemSets; | ||
| 38 : | use WeBWorK::ContentGenerator::Test; | ||
| 39 : | use WeBWorK::CourseEnvironment; | ||
| 40 : | use WeBWorK::DB; | ||
| 41 : | sh002i | 1195 | use WeBWorK::Timing; |
| 42 : | sh002i | 986 | |
| 43 : | sh002i | 1151 | #sub dispatch($) { |
| 44 : | # print STDERR "Executing &WeBWorK::dispatch\n"; | ||
| 45 : | # return DECLINED; | ||
| 46 : | #} | ||
| 47 : | #1; | ||
| 48 : | #__END__ | ||
| 49 : | |||
| 50 : | sh002i | 986 | sub dispatch($) { |
| 51 : | my ($apache) = @_; | ||
| 52 : | my $r = Apache::Request->new($apache); | ||
| 53 : | # have to deal with unpredictable GET or POST data, and sift | ||
| 54 : | # through it for the key. So use Apache::Request | ||
| 55 : | |||
| 56 : | # This stuff is pretty much copied out of the O'Reilly mod_perl book. | ||
| 57 : | # It's for figuring out the basepath. I may change this up if I find a | ||
| 58 : | # better way to do it. | ||
| 59 : | my $path_info = $r->path_info || ""; | ||
| 60 : | malsyned | 1047 | $path_info =~ s!/+!/!g; # strip multiple forward slashes |
| 61 : | sh002i | 986 | my $current_uri = $r->uri; |
| 62 : | my $args = $r->args; | ||
| 63 : | |||
| 64 : | malsyned | 1048 | my ($urlRoot) = $current_uri =~ m/^(.*)$path_info/; |
| 65 : | sh002i | 986 | |
| 66 : | # If it's a valid WeBWorK URI, it ends in a /. This is assumed | ||
| 67 : | # alllll over the place. | ||
| 68 : | unless (substr($current_uri,-1) eq '/') { | ||
| 69 : | $r->header_out(Location => "$current_uri/" . ($args ? "?$args" : "")); | ||
| 70 : | return REDIRECT; | ||
| 71 : | # *** any post data gets lost here -- fix that. | ||
| 72 : | sh002i | 1131 | # (actually, it's not a problem, since all URLs generated |
| 73 : | gage | 1377 | # from within the system have trailing slashes, and we don't |
| 74 : | sh002i | 1131 | # need POST data from outside the system anyway!) |
| 75 : | sh002i | 986 | } |
| 76 : | |||
| 77 : | # Create the @components array, which contains the path specified in the URL | ||
| 78 : | my($junk, @components) = split "/", $path_info; | ||
| 79 : | my $webwork_root = $r->dir_config('webwork_root'); # From a PerlSetVar in httpd.conf | ||
| 80 : | sh002i | 1051 | my $pg_root = $r->dir_config('pg_root'); # From a PerlSetVar in httpd.conf |
| 81 : | sh002i | 986 | my $course = shift @components; |
| 82 : | |||
| 83 : | # Try to get the course environment. | ||
| 84 : | sh002i | 1051 | my $ce = eval {WeBWorK::CourseEnvironment->new($webwork_root, $urlRoot, $pg_root, $course);}; |
| 85 : | sh002i | 986 | if ($@) { # If there was an error getting the requested course |
| 86 : | sh002i | 1131 | die "Failed to read course environment for $course: $@"; |
| 87 : | sh002i | 986 | } |
| 88 : | |||
| 89 : | # If no course was specified, redirect to the home URL | ||
| 90 : | unless (defined $course) { | ||
| 91 : | $r->header_out(Location => $ce->{webworkURLs}->{home}); | ||
| 92 : | return REDIRECT; | ||
| 93 : | } | ||
| 94 : | |||
| 95 : | # Freak out if the requested course doesn't exist. For now, this is just a | ||
| 96 : | # check to see if the course directory exists. | ||
| 97 : | sh002i | 1131 | my $courseDir = $ce->{webworkDirs}->{courses} . "/$course"; |
| 98 : | unless (-e $courseDir) { | ||
| 99 : | die "Course directory for $course ($courseDir) not found. Perhaps the course does not exist?"; | ||
| 100 : | sh002i | 986 | } |
| 101 : | |||
| 102 : | # Bring up a connection to the database (for Authen/Authz, and eventually | ||
| 103 : | # to be passed to content generators, when we clean this file up). | ||
| 104 : | my $db = WeBWorK::DB->new($ce); | ||
| 105 : | |||
| 106 : | ### Begin dispatching ### | ||
| 107 : | |||
| 108 : | sh002i | 1224 | #my $dispatchTimer = WeBWorK::Timing->new(__PACKAGE__."::dispatch"); |
| 109 : | #$dispatchTimer->start; | ||
| 110 : | sh002i | 1195 | |
| 111 : | my $result; | ||
| 112 : | sh002i | 986 | # WeBWorK::Authen::verify erases the passwd field and sets the key field |
| 113 : | # if login is successful. | ||
| 114 : | if (!WeBWorK::Authen->new($r, $ce, $db)->verify) { | ||
| 115 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Login->new($r, $ce, $db)->go; |
| 116 : | sh002i | 986 | } else { |
| 117 : | # After we are authenticated, there are some things that need to be | ||
| 118 : | # sorted out, Authorization-wize, before we start dispatching to individual | ||
| 119 : | # content generators. | ||
| 120 : | my $user = $r->param("user"); | ||
| 121 : | my $effectiveUser = $r->param("effectiveUser") || $user; | ||
| 122 : | my $su_authorized = WeBWorK::Authz->new($r, $ce, $db)->hasPermissions($user, "become_student", $effectiveUser); | ||
| 123 : | $effectiveUser = $user unless $su_authorized; | ||
| 124 : | $r->param("effectiveUser", $effectiveUser); | ||
| 125 : | |||
| 126 : | my $arg = shift @components; | ||
| 127 : | if (!defined $arg) { # We want the list of problem sets | ||
| 128 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::ProblemSets->new($r, $ce, $db)->go; |
| 129 : | sh002i | 986 | } elsif ($arg eq "hardcopy") { |
| 130 : | gage | 1203 | |
| 131 : | sh002i | 986 | my $hardcopyArgument = shift @components; |
| 132 : | $hardcopyArgument = "" unless defined $hardcopyArgument; | ||
| 133 : | gage | 1377 | $WeBWorK::timer1 = WeBWorK::Timing->new("hardcopy: $hardcopyArgument"); |
| 134 : | $WeBWorK::timer1->start; | ||
| 135 : | |||
| 136 : | gage | 1203 | my $result = WeBWorK::ContentGenerator::Hardcopy->new($r, $ce, $db)->go($hardcopyArgument); |
| 137 : | gage | 1377 | $WeBWorK::timer1 ->stop; |
| 138 : | $WeBWorK::timer1 ->save; | ||
| 139 : | gage | 1203 | return $result; |
| 140 : | sh002i | 986 | } elsif ($arg eq "instructor") { |
| 141 : | my $instructorArgument = shift @components; | ||
| 142 : | if (!defined $instructorArgument) { | ||
| 143 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Instructor::Index->new($r, $ce, $db)->go; |
| 144 : | malsyned | 995 | } elsif ($instructorArgument eq "users") { |
| 145 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Instructor::UserList->new($r, $ce, $db)->go; |
| 146 : | malsyned | 995 | } elsif ($instructorArgument eq "sets") { |
| 147 : | my $setID = shift @components; | ||
| 148 : | if (defined $setID) { | ||
| 149 : | malsyned | 1005 | my $setArg = shift @components; |
| 150 : | malsyned | 1015 | if (!defined $setArg) { |
| 151 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Instructor::ProblemSetEditor->new($r, $ce, $db)->go($setID); |
| 152 : | malsyned | 1015 | } elsif ($setArg eq "problems") { |
| 153 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Instructor::ProblemList->new($r, $ce, $db)->go($setID); |
| 154 : | malsyned | 1015 | } elsif ($setArg eq "users") { |
| 155 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Instructor::Assigner->new($r, $ce, $db)->go($setID); |
| 156 : | malsyned | 1005 | } |
| 157 : | malsyned | 995 | } else { |
| 158 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Instructor::ProblemSetList->new($r, $ce, $db)->go; |
| 159 : | malsyned | 995 | } |
| 160 : | sh002i | 986 | } elsif ($instructorArgument eq "pgProblemEditor") { |
| 161 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Instructor::PGProblemEditor->new($r, $ce, $db)->go(@components); |
| 162 : | gage | 1377 | } elsif ($instructorArgument eq "send_mail") { |
| 163 : | $result = WeBWorK::ContentGenerator::Instructor::SendMail->new($r, $ce, $db)->go(@components); | ||
| 164 : | gage | 1395 | } elsif ($instructorArgument eq "show_answers") { |
| 165 : | $result = WeBWorK::ContentGenerator::Instructor::ShowAnswers->new($r, $ce, $db)->go(@components); | ||
| 166 : | sh002i | 986 | } |
| 167 : | } elsif ($arg eq "options") { | ||
| 168 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Options->new($r, $ce, $db)->go; |
| 169 : | sh002i | 986 | } elsif ($arg eq "feedback") { |
| 170 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Feedback->new($r, $ce, $db)->go; |
| 171 : | sh002i | 986 | } elsif ($arg eq "logout") { |
| 172 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Logout->new($r, $ce, $db)->go; |
| 173 : | sh002i | 986 | } elsif ($arg eq "test") { |
| 174 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::Test->new($r, $ce, $db)->go; |
| 175 : | gage | 1135 | } elsif ($arg eq "quiz_mode" ) { |
| 176 : | gage | 1130 | # Gateway quiz capability -- very similar to problem set (initially) |
| 177 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::GatewayQuiz->new($r, $ce, $db)->go(@components); |
| 178 : | sh002i | 986 | } else { # We've got the name of a problem set. |
| 179 : | my $problem_set = $arg; | ||
| 180 : | my $ps_arg = shift @components; | ||
| 181 : | |||
| 182 : | if (!defined $ps_arg) { | ||
| 183 : | # list the problems in the problem set | ||
| 184 : | gage | 1377 | $WeBWorK::timer0 = WeBWorK::Timing->new("Problem $course:$problem_set"); |
| 185 : | $WeBWorK::timer0->start; | ||
| 186 : | sh002i | 1195 | $result = WeBWorK::ContentGenerator::ProblemSet->new($r, $ce, $db)->go($problem_set); |
| 187 : | gage | 1377 | $WeBWorK::timer0->continue("problem set listing is done"); |
| 188 : | $WeBWorK::timer0->stop; | ||
| 189 : | $WeBWorK::timer0->save; | ||
| 190 : | sh002i | 986 | } else { |
| 191 : | # We've got the name of a problem | ||
| 192 : | my $problem = $ps_arg; | ||
| 193 : | gage | 1204 | |
| 194 : | gage | 1245 | $WeBWorK::timer0 = WeBWorK::Timing->new("Problem $course:$problem_set/$problem"); |
| 195 : | $WeBWorK::timer0->start; | ||
| 196 : | gage | 1382 | # my $pid = fork(); |
| 197 : | gage | 1377 | # if ($pid) { |
| 198 : | # wait; | ||
| 199 : | # } else { | ||
| 200 : | my $result = WeBWorK::ContentGenerator::Problem->new($r, $ce, $db)->go($problem_set, $problem); | ||
| 201 : | # $WeBWorK::timer0->continue("Exiting child process"); | ||
| 202 : | # #$WeBWorK::timer0->stop; | ||
| 203 : | # #$WeBWorK::timer0->save; | ||
| 204 : | # eval{ APACHE::exit(0);} || warn "Error in leaving child |$@|"; | ||
| 205 : | # # We REALLY REALLY want this grandchild to exit. But not the child. How to do this | ||
| 206 : | # # cleanly???? FIXME | ||
| 207 : | # } | ||
| 208 : | gage | 1382 | $WeBWorK::timer0->continue("Problem done)"); |
| 209 : | gage | 1245 | $WeBWorK::timer0->stop; |
| 210 : | $WeBWorK::timer0->save; | ||
| 211 : | gage | 1203 | return $result; |
| 212 : | gage | 1204 | |
| 213 : | |||
| 214 : | sh002i | 986 | } |
| 215 : | } | ||
| 216 : | } | ||
| 217 : | |||
| 218 : | sh002i | 1224 | #$dispatchTimer->stop; |
| 219 : | sh002i | 1195 | |
| 220 : | return $result; | ||
| 221 : | sh002i | 986 | } |
| 222 : | |||
| 223 : | 1; |
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