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Revision 3389 - (download) (annotate)
Tue Jul 19 17:22:53 2005 UTC (7 years, 10 months ago) by sh002i
File size: 29645 byte(s)
changed default paths from /usr/local to /usr as per old email:

On Aug 24, 2004, at 11:23 AM, Arnold Pizer wrote:

> In the tarball for WW 1.9 I reset all paths to /usr/bin/ (rather than
> /usr/local/bin which FreeBSD or at least Hoss uses).  That way things
> work out of the box for most linux systems (all that I have played
> with).  I think it would be a good thing to do with future releases on
> WW 2.

Sounds good to me.
-sam

    1 #!perl
    2 ################################################################################
    3 # WeBWorK Online Homework Delivery System
    4 # Copyright © 2000-2003 The WeBWorK Project, http://openwebwork.sf.net/
    5 # $CVSHeader: webwork2/conf/global.conf.dist,v 1.123 2005/07/14 14:30:19 glarose Exp $
    6 #
    7 # This program is free software; you can redistribute it and/or modify it under
    8 # the terms of either: (a) the GNU General Public License as published by the
    9 # Free Software Foundation; either version 2, or (at your option) any later
   10 # version, or (b) the "Artistic License" which comes with this package.
   11 #
   12 # This program is distributed in the hope that it will be useful, but WITHOUT
   13 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   14 # FOR A PARTICULAR PURPOSE.  See either the GNU General Public License or the
   15 # Artistic License for more details.
   16 ################################################################################
   17 
   18 # This file is used to set up the default WeBWorK course environment for all
   19 # requests. Values may be overwritten by the course.conf for a specific course.
   20 # All package variables set in this file are added to the course environment.
   21 # If you wish to set a variable here but omit it from the course environment,
   22 # use the "my" keyword. The $webwork_dir variable is set in the WeBWorK Apache
   23 # configuration file (webwork.apache-config) and is available for use here. In
   24 # addition, the $courseName variable holds the name of the current course.
   25 
   26 ################################################################################
   27 # Seed variables
   28 ################################################################################
   29 
   30 # Set these variables to correspond to your configuration and preferences. You
   31 # will need to restart the webserver to reset the variables in this section.
   32 
   33 # URL of WeBWorK handler.
   34 $webwork_url         = "/webwork2";
   35 
   36 # Root directory of PG.
   37 $pg_dir              = "/opt/pg";
   38 
   39 # URL and path to htdocs directory.
   40 $webwork_htdocs_url  = "/webwork2_files";
   41 $webwork_htdocs_dir  = "$webwork_dir/htdocs";
   42 
   43 # URL and path to courses directory.
   44 $webwork_courses_url = "/webwork2_course_files";
   45 $webwork_courses_dir = "$webwork_dir/courses";
   46 
   47 ################################################################################
   48 # Paths to external programs
   49 ################################################################################
   50 
   51 $externalPrograms{mkdir}    = "/bin/mkdir";
   52 $externalPrograms{mv}       = "/bin/mv";
   53 $externalPrograms{mysql}    = "/usr/bin/mysql";
   54 
   55 $externalPrograms{latex}    = "/usr/bin/latex";
   56 $externalPrograms{pdflatex} = "/usr/bin/pdflatex --shell-escape"; # allows pdflatex to handle .eps files
   57 $externalPrograms{dvipng}   = "/usr/bin/dvipng";
   58 $externalPrograms{tth}      = "/usr/bin/tth";
   59 
   60 $externalPrograms{tar}      = "/usr/bin/tar";
   61 
   62 ################################################################################
   63 # Mail settings
   64 ################################################################################
   65 
   66 # Mail sent by the PG system and the mail merge and feedback modules will be
   67 # sent via this SMTP server.
   68 $mail{smtpServer}            = 'mail.yourschool.edu';
   69 
   70 # When connecting to the above server, WeBWorK will send this address in the
   71 # MAIL FROM command. This has nothing to do with the "From" address on the mail
   72 # message. It can really be anything, but some mail servers require it contain
   73 # a valid mail domain, or at least be well-formed.
   74 $mail{smtpSender}            = 'webwork@yourserver.yourschool.edu';
   75 
   76 # AllowedRecipients defines addresses that the PG system is allowed to send mail
   77 # to. this prevents subtle PG exploits. This should be set in course.conf to the
   78 # addresses of professors of each course. Sending mail from the PG system (i.e.
   79 # questionaires, essay questions) will fail if this is not set somewhere (either
   80 # here or in course.conf).
   81 $mail{allowedRecipients}     = [
   82   #'prof1@yourserver.yourdomain.edu',
   83   #'prof2@yourserver.yourdomain.edu',
   84 ];
   85 
   86 # If defined, feedbackRecipients overrides the list of recipients for feedback
   87 # email. It's appropriate to set this in the course.conf for specific courses,
   88 # but probably not in global.conf. if not defined, mail is sent to all
   89 # professors and TAs for a given course
   90 #$mail{feedbackRecipients}    = [
   91 # 'prof1@yourserver.yourdomain.edu',
   92 # 'prof2@yourserver.yourdomain.edu',
   93 #];
   94 
   95 # feedbackVerbosity:
   96 #  0: send only the feedback comment and context link
   97 #  1: as in 0, plus user, set, problem, and PG data
   98 #  2: as in 1, plus the problem environment (debugging data)
   99 $mail{feedbackVerbosity}     = 1;
  100 
  101 # Defines the size of the Mail Merge editor window
  102 # FIXME: should this be here? it's UI, not mail
  103 # FIXME: replace this with the auto-size method that TWiki uses
  104 $mail{editor_window_rows}    = 15;
  105 $mail{editor_window_columns} = 100;
  106 
  107 ################################################################################
  108 # System-wide locations (directories and URLs)
  109 ################################################################################
  110 
  111 # The root directory, set by webwork_root variable in Apache configuration.
  112 $webworkDirs{root}          = "$webwork_dir";
  113 
  114 # Location of system-wide data files.
  115 $webworkDirs{DATA}          = "$webworkDirs{root}/DATA";
  116 
  117 # Used for temporary storage of uploaded files.
  118 $webworkDirs{uploadCache}   = "$webworkDirs{DATA}/uploads";
  119 
  120 # Location of utility programs.
  121 $webworkDirs{bin}           = "$webworkDirs{root}/bin";
  122 
  123 # Location of configuration files, templates, snippets, etc.
  124 $webworkDirs{conf}          = "$webworkDirs{root}/conf";
  125 
  126 # Location of course directories.
  127 $webworkDirs{courses}       = "$webwork_courses_dir" || "$webworkDirs{root}/courses";
  128 
  129 # Contains log files.
  130 $webworkDirs{logs}          = "$webworkDirs{root}/logs";
  131 
  132 # Contains non-web-accessible temporary files, such as TeX working directories.
  133 $webworkDirs{tmp}           = "$webworkDirs{root}/tmp";
  134 
  135 # The (absolute) destinations of symbolic links that are OK for the FileManager to follow.
  136 #   (any subdirectory of these is a valid target for a symbolic link.)
  137 # For example:
  138 #    $webworkDirs{valid_symlinks} = ["$webworkDirs{courses}/modelCourse/templates","/ww2/common/sets"];
  139 $webworkDirs{valid_symlinks}   = [];
  140 
  141 ##### The following locations are web-accessible.
  142 
  143 # The root URL (usually /webwork2), set by <Location> in Apache configuration.
  144 $webworkURLs{root}          = "$webwork_url";
  145 
  146 # Location of system-wide web-accessible files, such as equation images, and
  147 # help files.
  148 $webworkDirs{htdocs}        = "$webwork_htdocs_dir" || "$webworkDirs{root}/htdocs";
  149 $webworkURLs{htdocs}        = "$webwork_htdocs_url";
  150 
  151 # Location of web-accessible temporary files, such as equation images.
  152 $webworkDirs{htdocs_temp}   = "$webworkDirs{htdocs}/tmp";
  153 $webworkURLs{htdocs_temp}   = "$webworkURLs{htdocs}/tmp";
  154 
  155 # Location of cached equation images.
  156 $webworkDirs{equationCache} = "$webworkDirs{htdocs_temp}/equations";
  157 $webworkURLs{equationCache} = "$webworkURLs{htdocs_temp}/equations";
  158 
  159 # Contains context-sensitive help files.
  160 $webworkDirs{local_help}    = "$webworkDirs{htdocs}/helpFiles";
  161 $webworkURLs{local_help}    = "$webworkURLs{htdocs}/helpFiles";
  162 
  163 # URL of general WeBWorK documentation.
  164 $webworkURLs{docs}          = "http://webhost.math.rochester.edu/webworkdocs/docs";
  165 
  166 # URL of WeBWorK 1.x profLogin.pl script, for access to old professor pages.
  167 # Note that both systems must share a single "courses" directory for this to be
  168 # useful. Leave this blank to disable
  169 $webworkURLs{oldProf}       = "/webwork1/profLogin.pl";
  170 
  171 # URL of WeBWorK Bugzilla database.
  172 $webworkURLs{bugReporter}   = "http://bugs.webwork.rochester.edu/";
  173 
  174 # Location of CSS
  175 $webworkURLs{stylesheet}    = "$webworkURLs{htdocs}/css/ur.css";
  176 
  177 # Location of jsMath script, used for the jsMath display mode.
  178 $webworkURLs{jsMath}        = "$webworkURLs{htdocs}/jsMath/jsMath.js";
  179 
  180 # Location of ASCIIMathML script, used for the asciimath display mode.
  181 $webworkURLs{asciimath}     = "$webworkURLs{htdocs}/ASCIIMathML/ASCIIMathML.js";
  182 
  183 ################################################################################
  184 # Defaults for course-specific locations (directories and URLs)
  185 ################################################################################
  186 
  187 # The root directory of the current course. (The ID of the current course is
  188 # available in $courseName.)
  189 $courseDirs{root}        = "$webworkDirs{courses}/$courseName";
  190 
  191 # Location of course-specific data files, such as WW1 (GDBM) database files.
  192 $courseDirs{DATA}        = "$courseDirs{root}/DATA";
  193 
  194 # Location of authentication data files when using a WW1 (GDBM) database.
  195 $courseDirs{auth_DATA}   = "$courseDirs{DATA}/.auth";
  196 
  197 # Location of course HTML files, passed to PG.
  198 $courseDirs{html}        = "$courseDirs{root}/html";
  199 $courseURLs{html}        = "$webwork_courses_url/$courseName";
  200 
  201 # Location of course image files, passed to PG.
  202 $courseDirs{html_images} = "$courseDirs{html}/images";
  203 
  204 # Location of web-accessible, course-specific temporary files, like static and
  205 # dynamically-generated PG graphics.
  206 $courseDirs{html_temp}   = "$courseDirs{html}/tmp";
  207 $courseURLs{html_temp}   = "$courseURLs{html}/tmp";
  208 
  209 # Location of course-specific logs, like the transaction log.
  210 $courseDirs{logs}        = "$courseDirs{root}/logs";
  211 
  212 # Location of scoring files.
  213 $courseDirs{scoring}     = "$courseDirs{root}/scoring";
  214 
  215 # Location of PG templates and set definition files.
  216 $courseDirs{templates}   = "$courseDirs{root}/templates";
  217 
  218 # Location of course-specific macro files.
  219 $courseDirs{macros}      = "$courseDirs{templates}/macros";
  220 
  221 # Location of mail-merge templates.
  222 $courseDirs{email}       = "$courseDirs{templates}/email";
  223 
  224 ################################################################################
  225 # System-wide files
  226 ################################################################################
  227 
  228 # Location of this file.
  229 $webworkFiles{environment}                      = "$webworkDirs{conf}/global.conf";
  230 
  231 # Flat-file database used to protect against MD5 hash collisions. TeX equations
  232 # are hashed to determine the name of the image file. There is a tiny chance of
  233 # a collision between two TeX strings. This file allows for that. However, this
  234 # is slow, so most people chose not to worry about it. Set this to "" if you
  235 # don't want to use the equation cache file.
  236 $webworkFiles{equationCacheDB}                  = ""; # "$webworkDirs{DATA}/equationcache";
  237 
  238 ##### Hardcopy snippets are used in constructing a TeX file for hardcopy output.
  239 ##### They should contain TeX code unless otherwise noted.
  240 
  241 # The preamble is the first thing in the TeX file.
  242 $webworkFiles{hardcopySnippets}{preamble}       = "$webworkDirs{conf}/snippets/hardcopyPreamble.tex";
  243 
  244 # The setHeader preceeds each set. It is a PG file.
  245 $webworkFiles{hardcopySnippets}{setHeader}      = "$webworkDirs{conf}/snippets/setHeader.pg";  # hardcopySetHeader.pg",
  246 
  247 # The problem divider goes between problems.
  248 $webworkFiles{hardcopySnippets}{problemDivider} = "$webworkDirs{conf}/snippets/hardcopyProblemDivider.tex";
  249 
  250 # The set footer goes after each set. Is is a PG file.
  251 $webworkFiles{hardcopySnippets}{setFooter}      = "$webworkDirs{conf}/snippets/hardcopySetFooter.pg";
  252 
  253 # The set divider goes between sets (in multiset output).
  254 $webworkFiles{hardcopySnippets}{setDivider}     = "$webworkDirs{conf}/snippets/hardcopySetDivider.tex";
  255 
  256 # The user divider does between users (in multiuser output).
  257 $webworkFiles{hardcopySnippets}{userDivider}    = "$webworkDirs{conf}/snippets/hardcopyUserDivider.tex";
  258 
  259 # The postabmle is the last thing in the TeX file.
  260 $webworkFiles{hardcopySnippets}{postamble}      = "$webworkDirs{conf}/snippets/hardcopyPostamble.tex";
  261 
  262 ##### Screen snippets are used when displaying problem sets on the screen.
  263 
  264 # The set header is displayed on the problem set page. It is a PG file.
  265 $webworkFiles{screenSnippets}{setHeader}        = "$webworkDirs{conf}/snippets/setHeader.pg"; # screenSetHeader.pg"
  266 
  267 # A PG template for creation of new problems.
  268 $webworkFiles{screenSnippets}{blankProblem}    = "$webworkDirs{conf}/snippets/blankProblem.pg"; # screenSetHeader.pg"
  269 
  270 # A site info  "message of the day" file
  271 $webworkFiles{site_info}                       = "$webworkDirs{htdocs}/site_info.txt";
  272 ################################################################################
  273 # Course-specific files
  274 ################################################################################
  275 
  276 # The course configuration file.
  277 $courseFiles{environment} = "$courseDirs{root}/course.conf";
  278 
  279 # File contents are displayed after login, on the problem sets page. Path given
  280 # here is relative to the templates directory.
  281 $courseFiles{course_info} = "course_info.txt";
  282 
  283 # File contents are displayed on the login page. Path given here is relative to
  284 # the templates directory.
  285 $courseFiles{login_info}  = "login_info.txt";
  286 
  287 # Additional library buttons can be added to the Library Browser (SetMaker.pm)
  288 # by adding the libraries you want to the following line.  For each key=>value
  289 # in the list, if a directory (or link to a directory) with name 'key' appears
  290 # in the templates directory, then a button with name 'value' will be placed at
  291 # the top of the problem browser.  (No button will appear if there is no
  292 # directory or link with the given name in the templates directory.)  For
  293 # example,
  294 #
  295 #     $courseFiles{problibs} = {rochester => "Rochester", asu => "ASU"};
  296 #
  297 # would add two buttons, one for the Rochester library and one for the ASU
  298 # library, provided templates/rochester and templates/asu exists either as
  299 # subdirectories or links to other directories.
  300 #
  301 $courseFiles{problibs}    = {
  302 #   rochesterLibrary => "Rochester",
  303 #   asuLibrary       => "Arizona State",
  304 #   dcdsLibrary      => "Detroit CDS",
  305 #   dartmouthLibrary => "Dartmouth",
  306 #   indianaLibrary   => "Indiana",
  307 #   osuLibrary       => "Ohio State",
  308 #   capaLibrary      => "CAPA",
  309 };
  310 
  311 ################################################################################
  312 # Database options (WWDBv3)
  313 ################################################################################
  314 
  315 # The four arguments passed to the DBI::connect() method. See the DBI manual for
  316 # more information.
  317 $wwdbv3_settings{dsn}          = "dbi:mysql:wwdbv3";
  318 $wwdbv3_settings{user}         = "wwdbv3";
  319 $wwdbv3_settings{pass}         = "xyzzy";
  320 $wwdbv3_settings{attr}         = {};
  321 
  322 # WWDBv3 needs a lock file to prevent concurrent database upgrades. The file
  323 # will be locked with flock().
  324 $wwdbv3_settings{upgrade_lock} = "$webworkDirs{tmp}/wwdbv3_upgrade.lock";
  325 
  326 ################################################################################
  327 # Database options (WWDBv2)
  328 ################################################################################
  329 
  330 # Several database are defined in the file conf/database.conf and stored in the
  331 # hash %dbLayouts.
  332 include "conf/database.conf";
  333 
  334 # Select the default database layout. This can be overridden in the course.conf
  335 # file of a particular course. If you choose "gdbm", WeBWorK will be able to
  336 # use courses from WeBWorK 1 without first adding course.conf files to them.
  337 # However, the recommended database layout for new courses is "sql_single". This
  338 # can be set when creating a course.
  339 $dbLayoutName = "sql_single"; # or "gdbm" or "sql"
  340 
  341 # This sets the symbol "dbLayout" as an alias for the selected database layout.
  342 *dbLayout     = $dbLayouts{$dbLayoutName};
  343 
  344 ################################################################################
  345 # Problem library options
  346 ################################################################################
  347 
  348 # The directory containing the problem library files. Set to "" if no problem
  349 # library is installed.
  350 $problemLibrary{root}        = "";
  351 
  352 # The name of the SQL database containing problem metadata
  353 $problemLibrary{sourceSQL}   = "ProblemLibrary";
  354 
  355 # The user name to use when connecting to the problem library database
  356 $problemLibrary{userSQL}     = "webworkRead";
  357 
  358 # The password to use when connecting to the problem library database
  359 $problemLibrary{passwordSQL} = "";
  360 
  361 ################################################################################
  362 # Logs
  363 ################################################################################
  364 
  365 # FIXME: take logs out of %webworkFiles/%courseFiles and give them their own
  366 # top-level hash.
  367 
  368 # Logs data about how long it takes to process problems. (Do not confuse this
  369 # with the /other/ timing log which can be set by WeBWorK::Timing and is used
  370 # for benchmarking system performance in general. At some point, this timing
  371 # mechanism will be deprecated in favor of the WeBWorK::Timing mechanism.)
  372 $webworkFiles{logs}{timing}         = "$webworkDirs{logs}/timing.log";
  373 
  374 # Logs courses created via the web-based Course Administration module.
  375 $webworkFiles{logs}{hosted_courses} = "$webworkDirs{logs}/hosted_courses.log";
  376 
  377 # The transaction log contains data from each recorded answer submission. This
  378 # is useful if the database becomes corrupted.
  379 $webworkFiles{logs}{transaction}    = "$courseDirs{logs}/transaction.log";
  380 
  381 # The answer log stores a history of all users' submitted answers.
  382 $courseFiles{logs}{answer_log}      = "$courseDirs{logs}/answer_log";
  383 
  384 # Log logins.
  385 $courseFiles{logs}{login_log}       = "$courseDirs{logs}/login.log";
  386 
  387 ################################################################################
  388 # More paths to external programs
  389 ################################################################################
  390 
  391 # These image conversion utilities are included in the WeBWorK distribution.
  392 $externalPrograms{gif2eps}  = "$webworkDirs{bin}/gif2eps";
  393 $externalPrograms{png2eps}  = "$webworkDirs{bin}/png2eps";
  394 $externalPrograms{gif2png}  = "$webworkDirs{bin}/gif2png";
  395 
  396 ################################################################################
  397 # Site defaults (FIXME: what other things could be "site defaults"?)
  398 ################################################################################
  399 
  400 # Status strings -- lists valid status values and their names. If your site uses
  401 # additional values, add them here.
  402 $siteDefaults{status} = {
  403   A        => "Audit",
  404   a        => "Audit",
  405   audit    => "Audit",
  406   D        => "Drop",
  407   d        => "Drop",
  408   drop     => "Drop",
  409   withdraw => "Drop",
  410   C        => "Enrolled",
  411   c        => "Enrolled",
  412   current  => "Enrolled",
  413   enrolled => "Enrolled",
  414 };
  415 
  416 # Set the default timezone of courses on this server. To get a list of valid
  417 # timezones, run:
  418 #
  419 #     perl -MDateTime::TimeZone -e 'print join "\n", DateTime::TimeZone::all_names'
  420 #
  421 # To get a list of valid timezone "links" (deprecated names), run:
  422 #
  423 #     perl -MDateTime::TimeZone -e 'print join "\n", DateTime::TimeZone::links'
  424 #
  425 # If left blank, the system timezone will be used. This is usually what you
  426 # want. You might want to set this if your server is NOT in the same timezone as
  427 # your school. If just a few courses are in a different timezone, set this in
  428 # course.conf for the affected courses instead.
  429 #
  430 $siteDefaults{timezone} = "";
  431 
  432 ################################################################################
  433 # Frontend options
  434 ################################################################################
  435 
  436 %templates = (
  437   system => "$webworkDirs{conf}/templates/ur.template",
  438   gateway => "$webworkDirs{conf}/templates/gw.template",
  439 );
  440 
  441 ################################################################################
  442 # Authorization system
  443 ################################################################################
  444 
  445 # This lets you specify a minimum permission level needed to perform certain
  446 # actions. For each pair in the hash below, in order to perform the action
  447 # described by the key, the user must have a permission level greater than or
  448 # equal to the value.
  449 
  450 my $guest     = -1;
  451 my $student   = 0;
  452 my $proctor   = 2;
  453 my $ta        = 5;
  454 my $professor = 10;
  455 my $nobody    = undef;
  456 
  457 %permissionLevels = (
  458   login                          => $guest,
  459   report_bugs                    => $student,
  460   submit_feedback                => $student,
  461   change_password                => $student,
  462   change_email_address           => $student,
  463 
  464   proctor_quiz                   => $proctor,
  465 
  466   view_multiple_sets             => $ta,
  467   view_unopened_sets             => $ta,
  468   view_unpublished_sets          => $ta,
  469   view_answers                   => $ta,
  470 
  471   become_student                 => $professor,
  472   access_instructor_tools        => $ta,
  473   score_sets                     => $professor,
  474   send_mail                      => $professor,
  475   receive_feedback               => $ta,
  476 
  477   create_and_delete_problem_sets => $professor,
  478   assign_problem_sets            => $professor,
  479   modify_problem_sets            => $professor,
  480   modify_student_data            => $professor,
  481   modify_classlist_files         => $professor,
  482   modify_set_def_files           => $professor,
  483   modify_scoring_files           => $professor,
  484   modify_problem_template_files  => $professor,
  485 
  486   create_and_delete_courses      => $professor,
  487   fix_course_databases           => $professor,
  488 
  489   ##### Behavior of the interactive problem processor #####
  490 
  491   show_correct_answers_before_answer_date         => $ta,
  492   show_solutions_before_answer_date               => $ta,
  493   avoid_recording_answers                         => $ta,
  494   check_answers_before_open_date                  => $ta,
  495   check_answers_after_open_date_with_attempts     => $ta,
  496   check_answers_after_open_date_without_attempts  => $guest,
  497   check_answers_after_due_date                    => $guest,
  498   check_answers_after_answer_date                 => $guest,
  499   record_answers_when_acting_as_student           => $nobody,
  500   # "record_answers_when_acting_as_student" takes precedence
  501   # over the following for professors acting as students:
  502   record_answers_before_open_date                 => $nobody,
  503   record_answers_after_open_date_with_attempts    => $student,
  504   record_answers_after_open_date_without_attempts => $nobody,
  505   record_answers_after_due_date                   => $nobody,
  506   record_answers_after_answer_date                => $nobody,
  507   dont_log_past_answers                           => $professor,
  508 
  509   ##### Behavior of the Hardcopy Processor #####
  510 
  511   download_hardcopy_multiuser  => $ta,
  512   download_hardcopy_multiset   => $ta,
  513   download_hardcopy_format_tex => $ta,
  514 );
  515 
  516 ################################################################################
  517 # Session options
  518 ################################################################################
  519 
  520 # $sessionKeyTimeout defines seconds of inactivity before a key expires
  521 $sessionKeyTimeout = 60*30;
  522 
  523 # $sessionKeyLength defines the length (in characters) of the session key
  524 $sessionKeyLength = 40;
  525 
  526 # @sessionKeyChars lists the legal session key characters
  527 @sessionKeyChars = ('A'..'Z', 'a'..'z', '0'..'9', '.', '^', '/', '!', '*');
  528 
  529 # Practice users are users who's names start with $practiceUser
  530 # (you can comment this out to remove practice user support)
  531 $practiceUserPrefix = "practice";
  532 
  533 # There is a practice user who can be logged in multiple times.  He's
  534 # commented out by default, though, so you don't hurt yourself.  It is
  535 # kindof a backdoor to the practice user system, since he doesn't have a
  536 # password.  Come to think of it, why do we even have this?!
  537 #$debugPracticeUser = "practice666";
  538 
  539 ################################################################################
  540 # PG subsystem options
  541 ################################################################################
  542 
  543 # List of enabled display modes. Comment out any modes you don't wish to make
  544 # available for use.
  545 $pg{displayModes} = [
  546   "plainText",     # display raw TeX for math expressions
  547   "formattedText", # format math expressions using TtH
  548   "images",        # display math expressions as images generated by dvipng
  549   "jsMath",        # render TeX math expressions on the client side using jsMath
  550   "asciimath",     # render TeX math expressions on the client side using ASCIIMathML
  551 ];
  552 
  553 #### Default settings for the PG translator
  554 
  555 # Default display mode. Should be listed above.
  556 $pg{options}{displayMode}        = "images";
  557 
  558 # The default grader to use, if a problem doesn't specify.
  559 $pg{options}{grader}             = "avg_problem_grader";
  560 
  561 # Fill in answer blanks with the student's last answer by default?
  562 $pg{options}{showOldAnswers}     = 1;
  563 
  564 # Show correct answers (when allowed) by default?
  565 $pg{options}{showCorrectAnswers} = 0;
  566 
  567 # Show hints (when allowed) by default?
  568 $pg{options}{showHints}          = 0;
  569 
  570 # Show solutions (when allowed) by default?
  571 $pg{options}{showSolutions}      = 0;
  572 
  573 # Catch translation warnings internally by default? (We no longer need to do
  574 # this, since there is a global warnings handler. So this should be off.)
  575 $pg{options}{catchWarnings}      = 0;
  576 
  577 ##### Currently-selected renderer
  578 
  579 # Only the local renderer is supported in this version.
  580 $pg{renderer} = "WeBWorK::PG::Local";
  581 
  582 # The remote renderer connects to an XML-RPC PG rendering server.
  583 #$pg{renderer} = "WeBWorK::PG::Remote";
  584 
  585 ##### Renderer-dependent options
  586 
  587 # The remote renderer has one option:
  588 $pg{renderers}{"WeBWorK::PG::Remote"} = {
  589   # The "proxy" server to connect to for remote rendering.
  590   proxy => "http://localhost:21000/RenderD",
  591 };
  592 
  593 ##### Settings for various display modes
  594 
  595 # "images" mode has several settings:
  596 $pg{displayModeOptions}{images} = {
  597   # Determines the method used to align images in output. Can be
  598   # "baseline", "absmiddle", or "mysql".
  599   dvipng_align => 'baseline',
  600 
  601   # If we choose mysql, we need information on connecting to the
  602   # database. Whatever you use here, you have to create the database
  603   # and grant read/write priveleges to the user listed here. To create
  604   # the database in mysql, as root use:
  605   #
  606   #     CREATE DATABASE DvipngDepths;
  607   #     USE DvipngDepths;
  608   #     CREATE TABLE depths (md5 CHAR(33) NOT NULL, depth SMALLINT, PRIMARY KEY (md5));
  609   #     GRANT ALL ON DvipngDepths.* TO webworkWrite;
  610   #
  611   # In the last statement, "webworkWrite" should match the user below.
  612   # FIXME: this database can become a table in the 'webwork' database
  613   dvipng_depth_db => {
  614     dbsource => 'dbi:mysql:DvipngDepths',
  615     user     => $dbLayouts{sql}->{password}->{params}->{usernameRW},
  616     passwd   => $dbLayouts{sql}->{password}->{params}->{passwordRW},
  617   },
  618 };
  619 
  620 $pg{displayModeOptions}{jsMath} = {
  621   reportMissingFonts => 1,       # set to 0 to prevent the missing font message
  622   missingFontMessage => undef,   # set to an HTML string to use for the missing font message
  623 };
  624 
  625 ##### Directories used by PG
  626 
  627 # The root of the PG directory tree (from pg_root in Apache config).
  628 $pg{directories}{root}   = "$pg_dir";
  629 $pg{directories}{lib}    = "$pg{directories}{root}/lib";
  630 $pg{directories}{macros} = "$pg{directories}{root}/macros";
  631 
  632 #
  633 #  The macro file search path.  Each directory in this list is seached
  634 #  (in this order) by loadMacros() when it looks for a .pl file.
  635 #
  636 $pg{directories}{macrosPath} = [
  637    ".",                     # search the problem file's directory
  638    $courseDirs{macros},
  639    $pg{directories}{macros},
  640 ];
  641 
  642 ##### "Special" PG environment variables. (Stuff that doesn't fit in anywhere else.)
  643 
  644 # Users for whom to print the file name of the PG file being processed.
  645 $pg{specialPGEnvironmentVars}{PRINT_FILE_NAMES_FOR} = [ "professor", ];
  646 
  647 # Locations of CAPA resources. (Only necessary if you need to use converted CAPA
  648 # problems.)
  649 $pg{specialPGEnvironmentVars}{CAPA_Tools}             = "$courseDirs{macros}/CAPA_Tools/",
  650 $pg{specialPGEnvironmentVars}{CAPA_MCTools}           = "$courseDirs{macros}/CAPA_MCTools/",
  651 $pg{specialPGEnvironmentVars}{CAPA_GraphicsDirectory} = "$courseDirs{html}/CAPA_Graphics/",
  652 $pg{specialPGEnvironmentVars}{CAPA_Graphics_URL}      = "$courseURLs{html}/CAPA_Graphics/",
  653 
  654 # Size in pixels of dynamically-generated images, i.e. graphs.
  655 $pg{specialPGEnvironmentVars}{onTheFlyImageSize}      = 400,
  656 
  657 ##### PG modules to load
  658 
  659 # The first item of each list is the module to load. The remaining items are
  660 # additional packages to import.
  661 
  662 ${pg}{modules} = [
  663   [qw(DynaLoader)],
  664   [qw(Exporter)],
  665   [qw(GD)],
  666 
  667   [qw(AlgParser AlgParserWithImplicitExpand Expr ExprWithImplicitExpand utf8)],
  668   [qw(AnswerHash AnswerEvaluator)],
  669   [qw(WWPlot)], # required by Circle (and others)
  670   [qw(Circle)],
  671   [qw(Complex)],
  672   [qw(Complex1)],
  673   [qw(Distributions)],
  674   [qw(Fraction)],
  675   [qw(Fun)],
  676   [qw(Hermite)],
  677   [qw(Label)],
  678   [qw(List)],
  679   [qw(Match)],
  680   [qw(MatrixReal1)], # required by Matrix
  681   [qw(Matrix)],
  682   [qw(Multiple)],
  683   [qw(PGrandom)],
  684   [qw(Regression)],
  685   [qw(Select)],
  686   [qw(Units)],
  687   [qw(VectorField)],
  688   [qw(Parser Value)],
  689   [qw(Apache::Log)],
  690 ];
  691 
  692 ##### Answer evaluatior defaults
  693 
  694 $pg{ansEvalDefaults} = {
  695   functAbsTolDefault            => .001,
  696   functLLimitDefault            => .0000001,
  697   functMaxConstantOfIntegration => 1E8,
  698   functNumOfPoints              => 3,
  699   functRelPercentTolDefault     => .1,
  700   functULimitDefault            => .9999999,
  701   functVarDefault               => "x",
  702   functZeroLevelDefault         => 1E-14,
  703   functZeroLevelTolDefault      => 1E-12,
  704   numAbsTolDefault              => .001,
  705   numFormatDefault              => "",
  706   numRelPercentTolDefault       => .1,
  707   numZeroLevelDefault           => 1E-14,
  708   numZeroLevelTolDefault        => 1E-12,
  709   useBaseTenLog                 => 0,
  710   defaultDisplayMatrixStyle     => "[s]",
  711 };
  712 
  713 ################################################################################
  714 # Compatibility
  715 ################################################################################
  716 
  717 # Define the old names for the various "root" variables.
  718 $webworkRoot    = $webworkDirs{root};
  719 $webworkURLRoot = $webworkURLs{root};
  720 $pgRoot         = $pg{directories}{root};

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