@@ -10821,13 +13362,44 @@ escaped strings of the action recorded i
=item *
-allowed($priv,$uri,$symb,$role) : check for a user privilege; returns codes for allowed actions
+allowed($priv,$uri,$symb,$role,$clientip,$noblockcheck) : check for a user privilege;
+returns codes for allowed actions.
+
+The first argument is required, all others are optional.
+
+$priv is the privilege being checked.
+$uri contains additional information about what is being checked for access (e.g.,
+URL, course ID etc.).
+$symb is the unique resource instance identifier in a course; if needed,
+but not provided, it will be retrieved via a call to &symbread().
+$role is the role for which a priv is being checked (only used if priv is evb).
+$clientip is the user's IP address (only used when checking for access to portfolio
+files).
+$noblockcheck, if true, skips calls to &has_comm_blocking() for the bre priv. This
+prevents recursive calls to &allowed.
+
F: full access
U,I,K: authentication modes (cxx only)
'': forbidden
1: user needs to choose course
2: browse allowed
A: passphrase authentication needed
+ B: access temporarily blocked because of a blocking event in a course.
+
+=item *
+
+constructaccess($url,$setpriv) : check for access to construction space URL
+
+See if the owner domain and name in the URL match those in the
+expected environment. If so, return three element list
+($ownername,$ownerdomain,$ownerhome).
+
+Otherwise return the null string.
+
+If second argument 'setpriv' is true, it assigns the privileges,
+and returns the same three element list, unless the owner has
+blocked "ad hoc" Domain Coordinator access to the Author Space,
+in which case the null string is returned.
=item *
@@ -10847,7 +13419,7 @@ environment). If no custom name is defi
=item *
-get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec) :
+get_my_roles($uname,$udom,$context,$types,$roles,$roledoms,$withsec,$hidepriv) :
All arguments are optional. Returns a hash of a roles, either for
co-author/assistant author roles for a user's Construction Space
(default), or if $context is 'userroles', roles for the user himself,
@@ -10861,6 +13433,41 @@ of role statuses (active, future or prev
to restrict the list of roles reported. If no array ref is
provided for types, will default to return only active roles.
+=item *
+
+in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
+user: $uname:$udom has a role in the course: $cdom_$cnum.
+
+Additional optional arguments are: $type (if role checking is to be restricted
+to certain user status types -- previous (expired roles), active (currently
+available roles) or future (roles available in the future), and
+$hideprivileged -- if true will not report course roles for users who
+have active Domain Coordinator role in course's domain or in additional
+domains (specified in 'Domains to check for privileged users' in course
+environment -- set via: Course Settings -> Classlists and staff listing).
+
+=item *
+
+privileged($username,$domain,$possdomains,$possroles) : returns 1 if user
+$username:$domain is a privileged user (e.g., Domain Coordinator or Super User)
+$possdomains and $possroles are optional array refs -- to domains to check and
+roles to check. If $possdomains is not specified, a dump will be done of the
+users' roles.db to check for a dc or su role in any domain. This can be
+time consuming if &privileged is called repeatedly (e.g., when displaying a
+classlist), so in such cases, supplying a $possdomains array is preferred, as
+this then allows &privileged_by_domain() to be used, which caches the identity
+of privileged users, eliminating the need for repeated calls to &dump().
+
+=item *
+
+privileged_by_domain($possdomains,$roles) : returns a hash of a hash of a hash,
+where the outer hash keys are domains specified in the $possdomains array ref,
+next inner hash keys are privileged roles specified in the $roles array ref,
+and the innermost hash contains key = value pairs for username:domain = end:start
+for active or future "privileged" users with that role in that domain. To avoid
+repeated dumps of domain roles -- via &get_domain_roles() -- contents of the
+innerhash are cached using priv_$role and $dom as the identifiers.
+
=back
=head2 User Modification
@@ -10902,8 +13509,8 @@ or when Autoupdate.pl is run by cron in
modifystudent
modify a student's enrollment and identification information.
-The course id is resolved based on the current users environment.
-This means the envoking user must be a course coordinator or otherwise
+The course id is resolved based on the current user's environment.
+This means the invoking user must be a course coordinator or otherwise
associated with a course.
This call is essentially a wrapper for lonnet::modifyuser and
@@ -10953,7 +13560,9 @@ Inputs:
=item B<$context> role change context (shown in User Management Logs display in a course)
-=item B<$inststatus> institutional status of user - : separated string of escaped status types
+=item B<$inststatus> institutional status of user - : separated string of escaped status types
+
+=item B<$credits> Number of credits student will earn from this class - only needs to be supplied if value needs to be different from default credits for class.
=back
@@ -10961,20 +13570,20 @@ Inputs:
modify_student_enrollment
-Change a students enrollment status in a class. The environment variable
+Change a student's enrollment status in a class. The environment variable
'role.request.course' must be defined for this function to proceed.
Inputs:
=over 4
-=item $udom, students domain
+=item $udom, student's domain
-=item $uname, students name
+=item $uname, student's name
-=item $uid, students user id
+=item $uid, student's user id
-=item $first, students first name
+=item $first, student's first name
=item $middle
@@ -10998,6 +13607,8 @@ Inputs:
=item $context
+=item $credits, number of credits student will earn from this class
+
=back
@@ -11023,17 +13634,38 @@ revokecustomrole($udom,$uname,$url,$role
=item *
-coursedescription($courseid) : returns a hash of information about the
+coursedescription($courseid,$options) : returns a hash of information about the
specified course id, including all environment settings for the
course, the description of the course will be in the hash under the
key 'description'
+$options is an optional parameter that if supplied is a hash reference that controls
+what how this function works. It has the following key/values:
+
+=over 4
+
+=item freshen_cache
+
+If defined, and the environment cache for the course is valid, it is
+returned in the returned hash.
+
+=item one_time
+
+If defined, the last cache time is set to _now_
+
+=item user
+
+If defined, the supplied username is used instead of the current user.
+
+
+=back
+
=item *
resdata($name,$domain,$type,@which) : request for current parameter
setting for a specific $type, where $type is either 'course' or 'user',
@what should be a list of parameters to ask about. This routine caches
-answers for 5 minutes.
+answers for 10 minutes.
=item *
@@ -11042,6 +13674,9 @@ data base, returning a hash that is keye
values that are the resource value. I believe that the timestamps and
versions are also returned.
+get_numsuppfiles($cnum,$cdom) : retrieve number of files in a course's
+supplemental content area. This routine caches the number of files for
+10 minutes.
=back
@@ -11062,6 +13697,19 @@ createcourse($udom,$description,$url,$co
generate_coursenum($udom,$crstype) : get a unique (unused) course number in domain $udom for course type $crstype (Course or Community).
+=item *
+
+is_course($courseid), is_course($cdom, $cnum)
+
+Accepts either a combined $courseid (in the form of domain_courseid) or the
+two component version $cdom, $cnum. It checks if the specified course exists.
+
+Returns:
+ undef if the course doesn't exist, otherwise
+ in scalar context the combined courseid.
+ in list context the two components of the course identifier, domain and
+ courseid.
+
=back
=head2 Resource Subroutines
@@ -11089,10 +13737,15 @@ resource. Expects the local filesystem p
=item *
-EXT($varname,$symb,$udom,$uname) : evaluates and returns the value of
-a vairety of different possible values, $varname should be a request
-string, and the other parameters can be used to specify who and what
-one is asking about.
+EXT($varname,$symb,$udom,$uname,$usection,$recurse,$cid) : evaluates
+and returns the value of a variety of different possible values,
+$varname should be a request string, and the other parameters can be
+used to specify who and what one is asking about. Ordinarily, $cid
+does not need to be specified, as it is retrived from
+$env{'request.course.id'}, but &Apache::lonnet::EXT() is called
+within lonuserstate::loadmap() when initializing a course, before
+$env{'request.course.id'} has been set, so it needs to be provided
+in that one case.
Possible values for $varname are environment.lastname (or other item
from the envirnment hash), user.name (or someother aspect about the
@@ -11125,17 +13778,32 @@ will be stored for query
=item *
-symbread($filename) : return symbolic list entry (filename argument optional);
+symbread($filename,$donotrecurse,$ignorecachednull,$checkforblock,$possibles) :
+return symbolic list entry (all arguments optional).
+
+Args: filename is the filename (including path) for the file for which a symb
+is required; donotrecurse, if true will prevent calls to allowed() being made
+to check access status if more than one resource was found in the bighash
+(see rev. 1.249) to avoid an infinite loop if an ambiguous resource is part of
+a randompick); ignorecachednull, if true will prevent a symb of '' being
+returned if $env{$cache_str} is defined as ''; checkforblock if true will
+cause possible symbs to be checked to determine if they are subject to content
+blocking, if so they will not be included as possible symbs; possibles is a
+ref to a hash, which, as a side effect, will be populated with all possible
+symbs (content blocking not tested).
+
returns the data handle
=item *
-symbverify($symb,$thisfn) : verifies that $symb actually exists and is
-a possible symb for the URL in $thisfn, and if is an encryypted
+symbverify($symb,$thisfn,$encstate) : verifies that $symb actually exists
+and is a possible symb for the URL in $thisfn, and if is an encrypted
resource that the user accessed using /enc/ returns a 1 on success, 0
-on failure, user must be in a course, as it assumes the existance of
-the course initial hash, and uses $env('request.course.id'}
-
+on failure, user must be in a course, as it assumes the existence of
+the course initial hash, and uses $env('request.course.id'}. The third
+arg is an optional reference to a scalar. If this arg is passed in the
+call to symbverify, it will be set to 1 if the symb has been set to be
+encrypted; otherwise it will be null.
=item *
@@ -11188,6 +13856,34 @@ expirespread($uname,$udom,$stype,$usymb)
devalidate($symb) : devalidate temporary spreadsheet calculations,
forcing spreadsheet to reevaluate the resource scores next time.
+=item *
+
+can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
+when viewing in course context.
+
+ input: six args -- filename (decluttered), course number, course domain,
+ url, symb (if registered) and group (if this is a
+ group item -- e.g., bulletin board, group page etc.).
+
+ output: array of five scalars --
+ $cfile -- url for file editing if editable on current server
+ $home -- homeserver of resource (i.e., for author if published,
+ or course if uploaded.).
+ $switchserver -- 1 if server switch will be needed.
+ $forceedit -- 1 if icon/link should be to go to edit mode
+ $forceview -- 1 if icon/link should be to go to view mode
+
+=item *
+
+is_course_upload($file,$cnum,$cdom)
+
+Used in course context to determine if current file was uploaded to
+the course (i.e., would be found in /userfiles/docs on the course's
+homeserver.
+
+ input: 3 args -- filename (decluttered), course number and course domain.
+ output: boolean -- 1 if file was uploaded.
+
=back
=head2 Storing/Retreiving Data
@@ -11196,15 +13892,21 @@ forcing spreadsheet to reevaluate the re
=item *
-store($storehash,$symb,$namespace,$udom,$uname) : stores hash permanently
-for this url; hashref needs to be given and should be a \%hashname; the
-remaining args aren't required and if they aren't passed or are '' they will
-be derived from the env
+store($storehash,$symb,$namespace,$udom,$uname,$laststore) : stores hash
+permanently for this url; hashref needs to be given and should be a \%hashname;
+the remaining args aren't required and if they aren't passed or are '' they will
+be derived from the env (with the exception of $laststore, which is an
+optional arg used when a user's submission is stored in grading).
+$laststore is $version=$timestamp, where $version is the most recent version
+number retrieved for the corresponding $symb in the $namespace db file, and
+$timestamp is the timestamp for that transaction (UNIX time).
+$laststore is currently only passed when cstore() is called by
+structuretags::finalize_storage().
=item *
-cstore($storehash,$symb,$namespace,$udom,$uname) : same as store but
-uses critical subroutine
+cstore($storehash,$symb,$namespace,$udom,$uname,$laststore) : same as store
+but uses critical subroutine
=item *
@@ -11227,10 +13929,11 @@ $range should be either an integer '100'
=item *
-putstore($namespace,$symb,$version,$storehash,$udomain,$uname) :
+putstore($namespace,$symb,$version,$storehash,$udomain,$uname,$tolog) :
replaces a &store() version of data with a replacement set of data
for a particular resource in a namespace passed in the $storehash hash
-reference
+reference. If $tolog is true, the transaction is logged in the courselog
+with an action=PUTSTORE.
=item *
@@ -11340,15 +14043,91 @@ server ($udom and $uhome are optional)
=item *
-get_domain_defaults($target_domain) : returns hash with defaults for
-authentication and language in the domain. Keys are: auth_def, auth_arg_def,
-lang_def; corresponsing values are authentication type (internal, krb4, krb5,
-or localauth), initial password or a kerberos realm, language (e.g., en-us).
-Values are retrieved from cache (if current), or from domain's configuration.db
-(if available), or lastly from values in lonTabs/dns_domain,tab,
-or lonTabs/domain.tab.
+get_domain_defaults($target_domain,$ignore_cache) : returns hash with defaults
+for: authentication, language, quotas, timezone, date locale, and portal URL in
+the target domain.
+
+May also include additional key => value pairs for the following groups:
+
+=over
-%domdefaults = &get_auth_defaults($target_domain);
+=item
+disk quotas (MB allocated by default to portfolios and authoring spaces).
+
+=over
+
+=item defaultquota, authorquota
+
+=back
+
+=item
+tools (availability of aboutme page, blog, webDAV access for authoring spaces,
+portfolio for users).
+
+=over
+
+=item
+aboutme, blog, webdav, portfolio
+
+=back
+
+=item
+requestcourses: ability to request courses, and how requests are processed.
+
+=over
+
+=item
+official, unofficial, community, textbook
+
+=back
+
+=item
+inststatus: types of institutional affiliation, and order in which they are displayed.
+
+=over
+
+=item
+inststatustypes, inststatusorder, inststatusguest
+
+=back
+
+=item
+coursedefaults: can PDF forms can be created, default credits for courses, default quotas (MB)
+for course's uploaded content.
+
+=over
+
+=item
+canuse_pdfforms, officialcredits, unofficialcredits, textbookcredits, officialquota, unofficialquota,
+communityquota, textbookquota
+
+=back
+
+=item
+usersessions: set options for hosting of your users in other domains, and hosting of users from other domains
+on your servers.
+
+=over
+
+=item
+remotesessions, hostedsessions
+
+=back
+
+=back
+
+In cases where a domain coordinator has never used the "Set Domain Configuration"
+utility to create a configuration.db file on a domain's primary library server
+only the following domain defaults: auth_def, auth_arg_def, lang_def
+-- corresponding values are authentication type (internal, krb4, krb5,
+or localauth), initial password or a kerberos realm, language (e.g., en-us) --
+will be available. Values are retrieved from cache (if current), unless the
+optional $ignore_cache arg is true, or from domain's configuration.db (if available),
+or lastly from values in lonTabs/dns_domain,tab, or lonTabs/domain.tab.
+
+Typical usage:
+
+%domdefaults = &get_domain_defaults($target_domain);
=back
@@ -11358,7 +14137,82 @@ or lonTabs/domain.tab.
=item *
-dirlist($uri) : return directory list based on URI
+dirlist() : return directory list based on URI (first arg).
+
+Inputs: 1 required, 5 optional.
+
+=over
+
+=item
+$uri - path to file in filesystem (starts: /res or /userfiles/). Required.
+
+=item
+$userdomain - domain of user/course to be listed. Extracted from $uri if absent.
+
+=item
+$username - username of user/course to be listed. Extracted from $uri if absent.
+
+=item
+$getpropath - boolean: 1 if prepend path using &propath().
+
+=item
+$getuserdir - boolean: 1 if prepend path for "userfiles".
+
+=item
+$alternateRoot - path to prepend in place of path from $uri.
+
+=back
+
+Returns: Array of up to two items.
+
+=over
+
+a reference to an array of files/subdirectories
+
+=over
+
+Each element in the array of files/subdirectories is a & separated list of
+item name and the result of running stat on the item. If dirlist was requested
+for a file instead of a directory, the item name will be ''. For a directory
+listing, if the item is a metadata file, the element will end &N&M
+(where N amd M are either 0 or 1, corresponding to obsolete set (1), or
+default copyright set (1).
+
+=back
+
+a scalar containing error condition (if encountered).
+
+=over
+
+=item
+no_host (no homeserver identified for $username:$domain).
+
+=item
+no_such_host (server contacted for listing not identified as valid host).
+
+=item
+con_lost (connection to remote server failed).
+
+=item
+refused (invalid $username:$domain received on lond side).
+
+=item
+no_such_dir (directory at specified path on lond side does not exist).
+
+=item
+empty (directory at specified path on lond side is empty).
+
+=over
+
+This is currently not encountered because the &ls3, &ls2,
+&ls (_handler) routines on the lond side do not filter out
+. and .. from a directory listing.
+
+=back
+
+=back
+
+=back
=item *
@@ -11420,11 +14274,12 @@ splitting on '&', supports elements that
=head2 Logging Routines
-=over 4
These routines allow one to make log messages in the lonnet.log and
lonnet.perm logfiles.
+=over 4
+
=item *
logtouch() : make sure the logfile, lonnet.log, exists
@@ -11440,6 +14295,7 @@ logperm() : append a permanent message t
file never gets deleted by any automated portion of the system, only
messages of critical importance should go in here.
+
=back
=head2 General File Helper Routines
@@ -11496,7 +14352,8 @@ filelocation except for hrefs
=item *
-declutter() : declutters URLs (remove docroot, beginning slashes, 'res' etc)
+declutter() : declutters URLs -- remove beginning slashes, 'res' etc.
+also removes beginning /home/httpd/html unless /priv/ follows it.
=back
@@ -11666,6 +14523,8 @@ Internal notes:
Locks on files (resulting from submission of portfolio file to a homework problem stored in array of arrays.
+=item *
+
modify_access_controls():
Modifies access controls for a portfolio file
@@ -11683,7 +14542,51 @@ Returns:
3. reference to hash of any new or updated access controls.
4. reference to hash used to map incoming IDs to uniqueIDs assigned to control.
key = integer (inbound ID)
- value = uniqueID
+ value = uniqueID
+
+=item *
+
+get_timebased_id():
+
+Attempts to get a unique timestamp-based suffix for use with items added to a
+course via the Course Editor (e.g., folders, composite pages,
+group bulletin boards).
+
+Args: (first three required; six others optional)
+
+1. prefix (alphanumeric): of keys in hash, e.g., suppsequence, docspage,
+ docssequence, or name of group
+
+2. keyid (alphanumeric): name of temporary locking key in hash,
+ e.g., num, boardids
+
+3. namespace: name of gdbm file used to store suffixes already assigned;
+ file will be named nohist_namespace.db
+
+4. cdom: domain of course; default is current course domain from %env
+
+5. cnum: course number; default is current course number from %env
+
+6. idtype: set to concat if an additional digit is to be appended to the
+ unix timestamp to form the suffix, if the plain timestamp is already
+ in use. Default is to not do this, but simply increment the unix
+ timestamp by 1 until a unique key is obtained.
+
+7. who: holder of locking key; defaults to user:domain for user.
+
+8. locktries: number of attempts to obtain a lock (sleep of 1s before
+ retrying); default is 3.
+
+9. maxtries: number of attempts to obtain a unique suffix; default is 20.
+
+Returns:
+
+1. suffix obtained (numeric)
+
+2. result of deleting locking key (ok if deleted, or lock never obtained)
+
+3. error: contains (localized) error message if an error occurred.
+
=back
500 Internal Server Error
Internal Server Error
The server encountered an internal error or
misconfiguration and was unable to complete
your request.
Please contact the server administrator at
root@localhost to inform them of the time this error occurred,
and the actions you performed just before this error.
More information about this error may be available
in the server error log.