2 # Copyright 2002 Katipo Communications
4 # This file is part of Koha.
6 # Koha is free software; you can redistribute it and/or modify it
7 # under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 3 of the License, or
9 # (at your option) any later version.
11 # Koha is distributed in the hope that it will be useful, but
12 # WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with Koha; if not, see <http://www.gnu.org/licenses>.
21 use vars qw($AUTOLOAD $context @context_stack $servers);
23 if ($ENV{'HTTP_USER_AGENT'}) {
25 # FIXME for future reference, CGI::Carp doc says
26 # "Note that fatalsToBrowser does not work with mod_perl version 2.0 and higher."
27 import CGI::Carp qw(fatalsToBrowser);
31 eval {C4::Context->dbh();};
36 $debug_level = C4::Context->preference("DebugLevel");
39 print q(<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
40 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
41 <html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
42 <head><title>Koha Error</title></head>
45 if ($debug_level eq "2"){
46 # debug 2 , print extra info too.
47 my %versions = get_versions();
49 # a little example table with various version info";
52 <p>The following fatal error has occurred:</p>
53 <pre><code>$msg</code></pre>
55 <tr><th>Apache</th><td> $versions{apacheVersion}</td></tr>
56 <tr><th>Koha</th><td> $versions{kohaVersion}</td></tr>
57 <tr><th>Koha DB</th><td> $versions{kohaDbVersion}</td></tr>
58 <tr><th>MySQL</th><td> $versions{mysqlVersion}</td></tr>
59 <tr><th>OS</th><td> $versions{osVersion}</td></tr>
60 <tr><th>Perl</th><td> $versions{perlVersion}</td></tr>
63 } elsif ($debug_level eq "1"){
66 <p>The following fatal error has occurred:</p>
67 <pre><code>$msg</code></pre>";
69 print "<p>production mode - trapped fatal error</p>";
71 print "</body></html>";
73 #CGI::Carp::set_message(\&handle_errors);
74 ## give a stack backtrace if KOHA_BACKTRACES is set
75 ## can't rely on DebugLevel for this, as we're not yet connected
76 if ($ENV{KOHA_BACKTRACES}) {
77 $main::SIG{__DIE__} = \&CGI::Carp::confess;
80 # Redefine multi_param if cgi version is < 4.08
81 # Remove the "CGI::param called in list context" warning in this case
82 if (!defined($CGI::VERSION) || $CGI::VERSION < 4.08) {
83 no warnings 'redefine';
84 *CGI::multi_param = \&CGI::param;
85 use warnings 'redefine';
86 $CGI::LIST_CONTEXT_WARN = 0;
88 } # else there is no browser to send fatals to!
96 use DateTime::TimeZone;
97 use Module::Load::Conditional qw(can_load);
103 use Koha::Config::SysPref;
104 use Koha::Config::SysPrefs;
108 C4::Context - Maintain and manipulate the context of a Koha script
114 use C4::Context("/path/to/koha-conf.xml");
116 $config_value = C4::Context->config("config_variable");
118 $koha_preference = C4::Context->preference("preference");
120 $db_handle = C4::Context->dbh;
122 $Zconn = C4::Context->Zconn;
126 When a Koha script runs, it makes use of a certain number of things:
127 configuration settings in F</etc/koha/koha-conf.xml>, a connection to the Koha
128 databases, and so forth. These things make up the I<context> in which
131 This module takes care of setting up the context for a script:
132 figuring out which configuration file to load, and loading it, opening
133 a connection to the right database, and so forth.
135 Most scripts will only use one context. They can simply have
141 Other scripts may need to use several contexts. For instance, if a
142 library has two databases, one for a certain collection, and the other
143 for everything else, it might be necessary for a script to use two
144 different contexts to search both databases. Such scripts should use
145 the C<&set_context> and C<&restore_context> functions, below.
147 By default, C4::Context reads the configuration from
148 F</etc/koha/koha-conf.xml>. This may be overridden by setting the C<$KOHA_CONF>
149 environment variable to the pathname of a configuration file to use.
156 # In addition to what is said in the POD above, a Context object is a
157 # reference-to-hash with the following fields:
160 # A reference-to-hash whose keys and values are the
161 # configuration variables and values specified in the config
162 # file (/etc/koha/koha-conf.xml).
164 # A handle to the appropriate database for this context.
166 # Used by &set_dbh and &restore_dbh to hold other database
167 # handles for this context.
169 # A connection object for the Zebra server
171 # Koha's main configuration file koha-conf.xml
172 # is searched for according to this priority list:
174 # 1. Path supplied via use C4::Context '/path/to/koha-conf.xml'
175 # 2. Path supplied in KOHA_CONF environment variable.
176 # 3. Path supplied in INSTALLED_CONFIG_FNAME, as long
177 # as value has changed from its default of
178 # '__KOHA_CONF_DIR__/koha-conf.xml', as happens
179 # when Koha is installed in 'standard' or 'single'
181 # 4. Path supplied in CONFIG_FNAME.
183 # The first entry that refers to a readable file is used.
185 use constant CONFIG_FNAME => "/etc/koha/koha-conf.xml";
186 # Default config file, if none is specified
188 my $INSTALLED_CONFIG_FNAME = '__KOHA_CONF_DIR__/koha-conf.xml';
189 # path to config file set by installer
190 # __KOHA_CONF_DIR__ is set by rewrite-confg.PL
191 # when Koha is installed in 'standard' or 'single'
192 # mode. If Koha was installed in 'dev' mode,
193 # __KOHA_CONF_DIR__ is *not* rewritten; instead
194 # developers should set the KOHA_CONF environment variable
196 $context = undef; # Initially, no context is set
197 @context_stack = (); # Initially, no saved contexts
200 =head2 read_config_file
202 Reads the specified Koha config file.
204 Returns an object containing the configuration variables. The object's
205 structure is a bit complex to the uninitiated ... take a look at the
206 koha-conf.xml file as well as the XML::Simple documentation for details. Or,
207 here are a few examples that may give you what you need:
209 The simple elements nested within the <config> element:
211 my $pass = $koha->{'config'}->{'pass'};
213 The <listen> elements:
215 my $listen = $koha->{'listen'}->{'biblioserver'}->{'content'};
217 The elements nested within the <server> element:
219 my $ccl2rpn = $koha->{'server'}->{'biblioserver'}->{'cql2rpn'};
221 Returns undef in case of error.
225 sub read_config_file { # Pass argument naming config file to read
226 my $koha = XMLin(shift, keyattr => ['id'], forcearray => ['listen', 'server', 'serverinfo'], suppressempty => '');
228 return $koha; # Return value: ref-to-hash holding the configuration
233 my $dbd_driver_name = C4::Context::db_schema2dbi($scheme);
235 This routines translates a database type to part of the name
236 of the appropriate DBD driver to use when establishing a new
237 database connection. It recognizes 'mysql' and 'Pg'; if any
238 other scheme is supplied it defaults to 'mysql'.
243 my $scheme = shift // '';
244 return $scheme eq 'Pg' ? $scheme : 'mysql';
248 # Create the default context ($C4::Context::Context)
249 # the first time the module is called
250 # (a config file can be optionaly passed)
252 # default context already exists?
256 my ($pkg,$config_file) = @_ ;
257 my $new_ctx = __PACKAGE__->new($config_file);
258 return unless $new_ctx;
260 # if successfully loaded, use it by default
261 $new_ctx->set_context;
267 $context = new C4::Context;
268 $context = new C4::Context("/path/to/koha-conf.xml");
270 Allocates a new context. Initializes the context from the specified
271 file, which defaults to either the file given by the C<$KOHA_CONF>
272 environment variable, or F</etc/koha/koha-conf.xml>.
274 It saves the koha-conf.xml values in the declared memcached server(s)
275 if currently available and uses those values until them expire and
278 C<&new> does not set this context as the new default context; for
279 that, use C<&set_context>.
285 # 2004-08-10 A. Tarallo: Added check if the conf file is not empty
288 my $conf_fname = shift; # Config file to load
291 # check that the specified config file exists and is not empty
292 undef $conf_fname unless
293 (defined $conf_fname && -s $conf_fname);
294 # Figure out a good config file to load if none was specified.
295 if (!defined($conf_fname))
297 # If the $KOHA_CONF environment variable is set, use
298 # that. Otherwise, use the built-in default.
299 if (exists $ENV{"KOHA_CONF"} and $ENV{'KOHA_CONF'} and -s $ENV{"KOHA_CONF"}) {
300 $conf_fname = $ENV{"KOHA_CONF"};
301 } elsif ($INSTALLED_CONFIG_FNAME !~ /__KOHA_CONF_DIR/ and -s $INSTALLED_CONFIG_FNAME) {
302 # NOTE: be careful -- don't change __KOHA_CONF_DIR in the above
303 # regex to anything else -- don't want installer to rewrite it
304 $conf_fname = $INSTALLED_CONFIG_FNAME;
305 } elsif (-s CONFIG_FNAME) {
306 $conf_fname = CONFIG_FNAME;
308 warn "unable to locate Koha configuration file koha-conf.xml";
313 my $conf_cache = Koha::Caches->get_instance('config');
315 $self = $conf_cache->get_from_cache('kohaconf');
318 $self = read_config_file($conf_fname);
321 # FIXME it may be better to use the memcached servers from the config file
323 $conf_cache->set_in_cache('koha_conf', $self)
325 unless ( exists $self->{config} or defined $self->{config} ) {
326 warn "read_config_file($conf_fname) returned undef";
330 $self->{"Zconn"} = undef; # Zebra Connections
331 $self->{"userenv"} = undef; # User env
332 $self->{"activeuser"} = undef; # current active user
333 $self->{"shelves"} = undef;
334 $self->{tz} = undef; # local timezone object
337 $self->{db_driver} = db_scheme2dbi($self->config('db_scheme')); # cache database driver
343 $context = new C4::Context;
344 $context->set_context();
346 set_context C4::Context $context;
349 restore_context C4::Context;
351 In some cases, it might be necessary for a script to use multiple
352 contexts. C<&set_context> saves the current context on a stack, then
353 sets the context to C<$context>, which will be used in future
354 operations. To restore the previous context, use C<&restore_context>.
362 my $new_context; # The context to set
364 # Figure out whether this is a class or instance method call.
366 # We're going to make the assumption that control got here
367 # through valid means, i.e., that the caller used an instance
368 # or class method call, and that control got here through the
369 # usual inheritance mechanisms. The caller can, of course,
370 # break this assumption by playing silly buggers, but that's
371 # harder to do than doing it properly, and harder to check
373 if (ref($self) eq "")
375 # Class method. The new context is the next argument.
376 $new_context = shift;
378 # Instance method. The new context is $self.
379 $new_context = $self;
382 # Save the old context, if any, on the stack
383 push @context_stack, $context if defined($context);
385 # Set the new context
386 $context = $new_context;
389 =head2 restore_context
393 Restores the context set by C<&set_context>.
402 if ($#context_stack < 0)
405 die "Context stack underflow";
408 # Pop the old context and set it.
409 $context = pop @context_stack;
411 # FIXME - Should this return something, like maybe the context
412 # that was current when this was called?
417 $value = C4::Context->config("config_variable");
419 $value = C4::Context->config_variable;
421 Returns the value of a variable specified in the configuration file
422 from which the current context was created.
424 The second form is more compact, but of course may conflict with
425 method names. If there is a configuration variable called "new", then
426 C<C4::Config-E<gt>new> will not return it.
433 return if !defined($context->{$term});
434 # Presumably $self->{$term} might be
435 # undefined if the config file given to &new
436 # didn't exist, and the caller didn't bother
437 # to check the return value.
439 # Return the value of the requested config variable
440 return $context->{$term}->{$var};
444 return _common_config($_[1],'config');
447 return _common_config($_[1],'server');
450 return _common_config($_[1],'serverinfo');
455 $sys_preference = C4::Context->preference('some_variable');
457 Looks up the value of the given system preference in the
458 systempreferences table of the Koha database, and returns it. If the
459 variable is not set or does not exist, undef is returned.
461 In case of an error, this may return 0.
463 Note: It is impossible to tell the difference between system
464 preferences which do not exist, and those whose values are set to NULL
469 my $syspref_cache = Koha::Caches->get_instance();
470 my $use_syspref_cache = 1;
473 my $var = shift; # The system preference to return
477 return $ENV{"OVERRIDE_SYSPREF_$var"}
478 if defined $ENV{"OVERRIDE_SYSPREF_$var"};
480 my $cached_var = $use_syspref_cache
481 ? $syspref_cache->get_from_cache("syspref_$var")
483 return $cached_var if defined $cached_var;
486 eval { $syspref = Koha::Config::SysPrefs->find( lc $var ) };
487 my $value = $syspref ? $syspref->value() : undef;
489 if ( $use_syspref_cache ) {
490 $syspref_cache->set_in_cache("syspref_$var", $value);
495 sub boolean_preference {
497 my $var = shift; # The system preference to return
498 my $it = preference($self, $var);
499 return defined($it)? C4::Boolean::true_p($it): undef;
502 =head2 enable_syspref_cache
504 C4::Context->enable_syspref_cache();
506 Enable the in-memory syspref cache used by C4::Context. This is the
511 sub enable_syspref_cache {
513 $use_syspref_cache = 1;
514 # We need to clear the cache to have it up-to-date
515 $self->clear_syspref_cache();
518 =head2 disable_syspref_cache
520 C4::Context->disable_syspref_cache();
522 Disable the in-memory syspref cache used by C4::Context. This should be
523 used with Plack and other persistent environments.
527 sub disable_syspref_cache {
529 $use_syspref_cache = 0;
530 $self->clear_syspref_cache();
533 =head2 clear_syspref_cache
535 C4::Context->clear_syspref_cache();
537 cleans the internal cache of sysprefs. Please call this method if
538 you update the systempreferences table. Otherwise, your new changes
539 will not be seen by this process.
543 sub clear_syspref_cache {
544 return unless $use_syspref_cache;
545 $syspref_cache->flush_all;
548 =head2 set_preference
550 C4::Context->set_preference( $variable, $value, [ $explanation, $type, $options ] );
552 This updates a preference's value both in the systempreferences table and in
553 the sysprefs cache. If the optional parameters are provided, then the query
554 becomes a create. It won't update the parameters (except value) for an existing
560 my ( $self, $variable, $value, $explanation, $type, $options ) = @_;
562 $variable = lc $variable;
564 my $syspref = Koha::Config::SysPrefs->find($variable);
567 : $syspref ? $syspref->type
570 $value = 0 if ( $type && $type eq 'YesNo' && $value eq '' );
572 # force explicit protocol on OPACBaseURL
573 if ( $variable eq 'opacbaseurl' && $value && substr( $value, 0, 4 ) !~ /http/ ) {
574 $value = 'http://' . $value;
579 { ( defined $value ? ( value => $value ) : () ),
580 ( $explanation ? ( explanation => $explanation ) : () ),
581 ( $type ? ( type => $type ) : () ),
582 ( $options ? ( options => $options ) : () ),
586 $syspref = Koha::Config::SysPref->new(
587 { variable => $variable,
589 explanation => $explanation || undef,
591 options => $options || undef,
596 if ( $use_syspref_cache ) {
597 $syspref_cache->set_in_cache( "syspref_$variable", $value );
603 =head2 delete_preference
605 C4::Context->delete_preference( $variable );
607 This deletes a system preference from the database. Returns a true value on
608 success. Failure means there was an issue with the database, not that there
609 was no syspref of the name.
613 sub delete_preference {
614 my ( $self, $var ) = @_;
616 if ( Koha::Config::SysPrefs->find( $var )->delete ) {
617 if ( $use_syspref_cache ) {
618 $syspref_cache->clear_from_cache("syspref_$var");
628 $Zconn = C4::Context->Zconn
630 Returns a connection to the Zebra database
634 C<$server> one of the servers defined in the koha-conf.xml file
636 C<$async> whether this is a asynchronous connection
641 my ($self, $server, $async ) = @_;
642 my $cache_key = join ('::', (map { $_ // '' } ($server, $async )));
643 if ( (!defined($ENV{GATEWAY_INTERFACE})) && defined($context->{"Zconn"}->{$cache_key}) && (0 == $context->{"Zconn"}->{$cache_key}->errcode()) ) {
644 # if we are running the script from the commandline, lets try to use the caching
645 return $context->{"Zconn"}->{$cache_key};
647 $context->{"Zconn"}->{$cache_key}->destroy() if defined($context->{"Zconn"}->{$cache_key}); #destroy old connection before making a new one
648 $context->{"Zconn"}->{$cache_key} = &_new_Zconn( $server, $async );
649 return $context->{"Zconn"}->{$cache_key};
654 $context->{"Zconn"} = &_new_Zconn($server,$async);
656 Internal function. Creates a new database connection from the data given in the current context and returns it.
658 C<$server> one of the servers defined in the koha-conf.xml file
660 C<$async> whether this is a asynchronous connection
662 C<$auth> whether this connection has rw access (1) or just r access (0 or NULL)
667 my ( $server, $async ) = @_;
669 my $tried=0; # first attempt
670 my $Zconn; # connection object
675 $server //= "biblioserver";
677 if ( $server eq 'biblioserver' ) {
678 $index_mode = $context->{'config'}->{'zebra_bib_index_mode'} // 'dom';
679 } elsif ( $server eq 'authorityserver' ) {
680 $index_mode = $context->{'config'}->{'zebra_auth_index_mode'} // 'dom';
683 if ( $index_mode eq 'grs1' ) {
684 $elementSetName = 'F';
685 $syntax = ( $context->preference("marcflavour") eq 'UNIMARC' )
689 } else { # $index_mode eq 'dom'
691 $elementSetName = 'marcxml';
694 my $host = $context->{'listen'}->{$server}->{'content'};
695 my $user = $context->{"serverinfo"}->{$server}->{"user"};
696 my $password = $context->{"serverinfo"}->{$server}->{"password"};
699 my $o = new ZOOM::Options();
700 $o->option(user => $user) if $user && $password;
701 $o->option(password => $password) if $user && $password;
702 $o->option(async => 1) if $async;
703 $o->option(cqlfile=> $context->{"server"}->{$server}->{"cql2rpn"});
704 $o->option(cclfile=> $context->{"serverinfo"}->{$server}->{"ccl2rpn"});
705 $o->option(preferredRecordSyntax => $syntax);
706 $o->option(elementSetName => $elementSetName) if $elementSetName;
707 $o->option(databaseName => $context->{"config"}->{$server}||"biblios");
709 # create a new connection object
710 $Zconn= create ZOOM::Connection($o);
713 $Zconn->connect($host, 0);
715 # check for errors and warn
716 if ($Zconn->errcode() !=0) {
717 warn "something wrong with the connection: ". $Zconn->errmsg();
724 # Internal helper function (not a method!). This creates a new
725 # database connection from the data given in the current context, and
730 Koha::Database->schema({ new => 1 })->storage->dbh;
735 $dbh = C4::Context->dbh;
737 Returns a database handle connected to the Koha database for the
738 current context. If no connection has yet been made, this method
739 creates one, and connects to the database.
741 This database handle is cached for future use: if you call
742 C<C4::Context-E<gt>dbh> twice, you will get the same handle both
743 times. If you need a second database handle, use C<&new_dbh> and
744 possibly C<&set_dbh>.
755 unless ( $params->{new} ) {
756 return Koha::Database->schema->storage->dbh;
759 return Koha::Database->schema({ new => 1 })->storage->dbh;
764 $dbh = C4::Context->new_dbh;
766 Creates a new connection to the Koha database for the current context,
767 and returns the database handle (a C<DBI::db> object).
769 The handle is not saved anywhere: this method is strictly a
770 convenience function; the point is that it knows which database to
771 connect to so that the caller doesn't have to know.
780 return &dbh({ new => 1 });
785 $my_dbh = C4::Connect->new_dbh;
786 C4::Connect->set_dbh($my_dbh);
788 C4::Connect->restore_dbh;
790 C<&set_dbh> and C<&restore_dbh> work in a manner analogous to
791 C<&set_context> and C<&restore_context>.
793 C<&set_dbh> saves the current database handle on a stack, then sets
794 the current database handle to C<$my_dbh>.
796 C<$my_dbh> is assumed to be a good database handle.
806 # Save the current database handle on the handle stack.
807 # We assume that $new_dbh is all good: if the caller wants to
808 # screw himself by passing an invalid handle, that's fine by
810 push @{$context->{"dbh_stack"}}, $context->{"dbh"};
811 $context->{"dbh"} = $new_dbh;
816 C4::Context->restore_dbh;
818 Restores the database handle saved by an earlier call to
819 C<C4::Context-E<gt>set_dbh>.
828 if ($#{$context->{"dbh_stack"}} < 0)
831 die "DBH stack underflow";
834 # Pop the old database handle and set it.
835 $context->{"dbh"} = pop @{$context->{"dbh_stack"}};
837 # FIXME - If it is determined that restore_context should
838 # return something, then this function should, too.
843 $queryparser = C4::Context->queryparser
845 Returns a handle to an initialized Koha::QueryParser::Driver::PQF object.
851 unless (defined $context->{"queryparser"}) {
852 $context->{"queryparser"} = &_new_queryparser();
856 defined( $context->{"queryparser"} )
857 ? $context->{"queryparser"}->new
861 =head2 _new_queryparser
863 Internal helper function to create a new QueryParser object. QueryParser
864 is loaded dynamically so as to keep the lack of the QueryParser library from
865 getting in anyone's way.
869 sub _new_queryparser {
871 'OpenILS::QueryParser' => undef,
872 'Koha::QueryParser::Driver::PQF' => undef
874 if ( can_load( 'modules' => $qpmodules ) ) {
875 my $QParser = Koha::QueryParser::Driver::PQF->new();
876 my $config_file = $context->config('queryparser_config');
877 $config_file ||= '/etc/koha/searchengine/queryparser.yaml';
878 if ( $QParser->load_config($config_file) ) {
879 # Set 'keyword' as the default search class
880 $QParser->default_search_class('keyword');
881 # TODO: allow indexes to be configured in the database
890 C4::Context->userenv;
892 Retrieves a hash for user environment variables.
894 This hash shall be cached for future use: if you call
895 C<C4::Context-E<gt>userenv> twice, you will get the same hash without real DB access
901 my $var = $context->{"activeuser"};
902 if (defined $var and defined $context->{"userenv"}->{$var}) {
903 return $context->{"userenv"}->{$var};
911 C4::Context->set_userenv($usernum, $userid, $usercnum,
912 $userfirstname, $usersurname,
913 $userbranch, $branchname, $userflags,
914 $emailaddress, $branchprinter, $persona);
916 Establish a hash of user environment variables.
918 set_userenv is called in Auth.pm
925 my ($usernum, $userid, $usercnum, $userfirstname, $usersurname, $userbranch, $branchname, $userflags, $emailaddress, $branchprinter, $persona, $shibboleth)=
926 map { Encode::is_utf8( $_ ) ? $_ : Encode::decode('UTF-8', $_) } # CGI::Session doesn't handle utf-8, so we decode it here
928 my $var=$context->{"activeuser"} || '';
930 "number" => $usernum,
932 "cardnumber" => $usercnum,
933 "firstname" => $userfirstname,
934 "surname" => $usersurname,
935 #possibly a law problem
936 "branch" => $userbranch,
937 "branchname" => $branchname,
938 "flags" => $userflags,
939 "emailaddress" => $emailaddress,
940 "branchprinter" => $branchprinter,
941 "persona" => $persona,
942 "shibboleth" => $shibboleth,
944 $context->{userenv}->{$var} = $cell;
948 sub set_shelves_userenv {
949 my ($type, $shelves) = @_ or return;
950 my $activeuser = $context->{activeuser} or return;
951 $context->{userenv}->{$activeuser}->{barshelves} = $shelves if $type eq 'bar';
952 $context->{userenv}->{$activeuser}->{pubshelves} = $shelves if $type eq 'pub';
953 $context->{userenv}->{$activeuser}->{totshelves} = $shelves if $type eq 'tot';
956 sub get_shelves_userenv {
958 unless ($active = $context->{userenv}->{$context->{activeuser}}) {
959 $debug and warn "get_shelves_userenv cannot retrieve context->{userenv}->{context->{activeuser}}";
962 my $totshelves = $active->{totshelves} or undef;
963 my $pubshelves = $active->{pubshelves} or undef;
964 my $barshelves = $active->{barshelves} or undef;
965 return ($totshelves, $pubshelves, $barshelves);
970 C4::Context->_new_userenv($session); # FIXME: This calling style is wrong for what looks like an _internal function
972 Builds a hash for user environment variables.
974 This hash shall be cached for future use: if you call
975 C<C4::Context-E<gt>userenv> twice, you will get the same hash without real DB access
977 _new_userenv is called in Auth.pm
984 shift; # Useless except it compensates for bad calling style
986 $context->{"activeuser"}=$sessionID;
989 =head2 _unset_userenv
991 C4::Context->_unset_userenv;
993 Destroys the hash for activeuser user environment variables.
1001 my ($sessionID)= @_;
1002 undef $context->{"activeuser"} if ($context->{"activeuser"} eq $sessionID);
1008 C4::Context->get_versions
1010 Gets various version info, for core Koha packages, Currently called from carp handle_errors() sub, to send to browser if 'DebugLevel' syspref is set to '2'.
1016 # A little example sub to show more debugging info for CGI::Carp
1019 $versions{kohaVersion} = Koha::version();
1020 $versions{kohaDbVersion} = C4::Context->preference('version');
1021 $versions{osVersion} = join(" ", POSIX::uname());
1022 $versions{perlVersion} = $];
1024 no warnings qw(exec); # suppress warnings if unable to find a program in $PATH
1025 $versions{mysqlVersion} = `mysql -V`;
1026 $versions{apacheVersion} = (`apache2ctl -v`)[0];
1027 $versions{apacheVersion} = `httpd -v` unless $versions{apacheVersion} ;
1028 $versions{apacheVersion} = `httpd2 -v` unless $versions{apacheVersion} ;
1029 $versions{apacheVersion} = `apache2 -v` unless $versions{apacheVersion} ;
1030 $versions{apacheVersion} = `/usr/sbin/apache2 -v` unless $versions{apacheVersion} ;
1040 Returns a DateTime::TimeZone object for the system timezone
1046 if (!defined $context->{tz}) {
1047 $context->{tz} = DateTime::TimeZone->new(name => 'local');
1049 return $context->{tz};
1053 =head2 IsSuperLibrarian
1055 C4::Context->IsSuperLibrarian();
1059 sub IsSuperLibrarian {
1060 my $userenv = C4::Context->userenv;
1062 unless ( $userenv and exists $userenv->{flags} ) {
1063 # If we reach this without a user environment,
1064 # assume that we're running from a command-line script,
1065 # and act as a superlibrarian.
1066 carp("C4::Context->userenv not defined!");
1070 return ($userenv->{flags}//0) % 2;
1075 Sets the current interface for later retrieval in any Perl module
1077 C4::Context->interface('opac');
1078 C4::Context->interface('intranet');
1079 my $interface = C4::Context->interface;
1084 my ($class, $interface) = @_;
1086 if (defined $interface) {
1087 $interface = lc $interface;
1088 if ($interface eq 'opac' || $interface eq 'intranet' || $interface eq 'sip' || $interface eq 'commandline') {
1089 $context->{interface} = $interface;
1091 warn "invalid interface : '$interface'";
1095 return $context->{interface} // 'opac';
1105 Specifies the configuration file to read.
1113 Andrew Arensburger <arensb at ooblick dot com>
1115 Joshua Ferraro <jmf at liblime dot com>