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 under the
7 # terms of the GNU General Public License as published by the Free Software
8 # Foundation; either version 2 of the License, or (at your option) any later
11 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
12 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License along with
16 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
17 # Suite 330, Boston, MA 02111-1307 USA
20 use vars qw($VERSION $AUTOLOAD $context @context_stack);
23 if ($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);
30 my $debug_level = C4::Context->preference("DebugLevel");
32 print q(<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
33 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
34 <html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
35 <head><title>Koha Error</title></head>
38 if ($debug_level eq "2"){
39 # debug 2 , print extra info too.
40 my %versions = get_versions();
42 # a little example table with various version info";
45 <p>The following fatal error has occurred:</p>
46 <pre><code>$msg</code></pre>
48 <tr><th>Apache</th><td> $versions{apacheVersion}</td></tr>
49 <tr><th>Koha</th><td> $versions{kohaVersion}</td></tr>
50 <tr><th>Koha DB</th><td> $versions{kohaDbVersion}</td></tr>
51 <tr><th>MySQL</th><td> $versions{mysqlVersion}</td></tr>
52 <tr><th>OS</th><td> $versions{osVersion}</td></tr>
53 <tr><th>Perl</th><td> $versions{perlVersion}</td></tr>
56 } elsif ($debug_level eq "1"){
59 <p>The following fatal error has occurred:</p>
60 <pre><code>$msg</code></pre>";
62 print "<p>production mode - trapped fatal error</p>";
64 print "</body></html>";
66 CGI::Carp::set_message(\&handle_errors);
67 ## give a stack backtrace if KOHA_BACKTRACES is set
68 ## can't rely on DebugLevel for this, as we're not yet connected
69 if ($ENV{KOHA_BACKTRACES}) {
70 $main::SIG{__DIE__} = \&CGI::Carp::confess;
72 } # else there is no browser to send fatals to!
73 $VERSION = '3.00.00.036';
83 C4::Context - Maintain and manipulate the context of a Koha script
89 use C4::Context("/path/to/koha-conf.xml");
91 $config_value = C4::Context->config("config_variable");
93 $koha_preference = C4::Context->preference("preference");
95 $db_handle = C4::Context->dbh;
97 $Zconn = C4::Context->Zconn;
99 $stopwordhash = C4::Context->stopwords;
103 When a Koha script runs, it makes use of a certain number of things:
104 configuration settings in F</etc/koha/koha-conf.xml>, a connection to the Koha
105 databases, and so forth. These things make up the I<context> in which
108 This module takes care of setting up the context for a script:
109 figuring out which configuration file to load, and loading it, opening
110 a connection to the right database, and so forth.
112 Most scripts will only use one context. They can simply have
118 Other scripts may need to use several contexts. For instance, if a
119 library has two databases, one for a certain collection, and the other
120 for everything else, it might be necessary for a script to use two
121 different contexts to search both databases. Such scripts should use
122 the C<&set_context> and C<&restore_context> functions, below.
124 By default, C4::Context reads the configuration from
125 F</etc/koha/koha-conf.xml>. This may be overridden by setting the C<$KOHA_CONF>
126 environment variable to the pathname of a configuration file to use.
135 # In addition to what is said in the POD above, a Context object is a
136 # reference-to-hash with the following fields:
139 # A reference-to-hash whose keys and values are the
140 # configuration variables and values specified in the config
141 # file (/etc/koha/koha-conf.xml).
143 # A handle to the appropriate database for this context.
145 # Used by &set_dbh and &restore_dbh to hold other database
146 # handles for this context.
148 # A connection object for the Zebra server
150 # Koha's main configuration file koha-conf.xml
151 # is searched for according to this priority list:
153 # 1. Path supplied via use C4::Context '/path/to/koha-conf.xml'
154 # 2. Path supplied in KOHA_CONF environment variable.
155 # 3. Path supplied in INSTALLED_CONFIG_FNAME, as long
156 # as value has changed from its default of
157 # '__KOHA_CONF_DIR__/koha-conf.xml', as happens
158 # when Koha is installed in 'standard' or 'single'
160 # 4. Path supplied in CONFIG_FNAME.
162 # The first entry that refers to a readable file is used.
164 use constant CONFIG_FNAME => "/etc/koha/koha-conf.xml";
165 # Default config file, if none is specified
167 my $INSTALLED_CONFIG_FNAME = '__KOHA_CONF_DIR__/koha-conf.xml';
168 # path to config file set by installer
169 # __KOHA_CONF_DIR__ is set by rewrite-confg.PL
170 # when Koha is installed in 'standard' or 'single'
171 # mode. If Koha was installed in 'dev' mode,
172 # __KOHA_CONF_DIR__ is *not* rewritten; instead
173 # developers should set the KOHA_CONF environment variable
175 $context = undef; # Initially, no context is set
176 @context_stack = (); # Initially, no saved contexts
180 returns the kohaversion stored in kohaversion.pl file
185 my $cgidir = C4::Context->intranetdir ."/cgi-bin";
187 # 2 cases here : on CVS install, $cgidir does not need a /cgi-bin
188 # on a standard install, /cgi-bin need to be added.
189 # test one, then the other
190 # FIXME - is this all really necessary?
191 unless (opendir(DIR, "$cgidir/cataloguing/value_builder")) {
192 $cgidir = C4::Context->intranetdir;
196 do $cgidir."/kohaversion.pl" || die "NO $cgidir/kohaversion.pl";
197 return kohaversion();
199 =item read_config_file
203 Reads the specified Koha config file.
205 Returns an object containing the configuration variables. The object's
206 structure is a bit complex to the uninitiated ... take a look at the
207 koha-conf.xml file as well as the XML::Simple documentation for details. Or,
208 here are a few examples that may give you what you need:
210 The simple elements nested within the <config> element:
212 my $pass = $koha->{'config'}->{'pass'};
214 The <listen> elements:
216 my $listen = $koha->{'listen'}->{'biblioserver'}->{'content'};
218 The elements nested within the <server> element:
220 my $ccl2rpn = $koha->{'server'}->{'biblioserver'}->{'cql2rpn'};
222 Returns undef in case of error.
228 sub read_config_file { # Pass argument naming config file to read
229 my $koha = XMLin(shift, keyattr => ['id'], forcearray => ['listen', 'server', 'serverinfo']);
230 return $koha; # Return value: ref-to-hash holding the configuration
234 # Translates the full text name of a database into de appropiate dbi name
240 # FIXME - Should have other databases.
241 if (/mysql/i) { return("mysql"); }
242 if (/Postgres|Pg|PostgresSQL/) { return("Pg"); }
243 if (/oracle/i) { return("Oracle"); }
245 return undef; # Just in case
250 my $conf_fname = shift; # Config file name
253 # Create a new context from the given config file name, if
254 # any, then set it as the current context.
255 $context = new C4::Context($conf_fname);
256 return undef if !defined($context);
257 $context->set_context;
262 $context = new C4::Context;
263 $context = new C4::Context("/path/to/koha-conf.xml");
265 Allocates a new context. Initializes the context from the specified
266 file, which defaults to either the file given by the C<$KOHA_CONF>
267 environment variable, or F</etc/koha/koha-conf.xml>.
269 C<&new> does not set this context as the new default context; for
270 that, use C<&set_context>.
276 # 2004-08-10 A. Tarallo: Added check if the conf file is not empty
279 my $conf_fname = shift; # Config file to load
282 # check that the specified config file exists and is not empty
283 undef $conf_fname unless
284 (defined $conf_fname && -s $conf_fname);
285 # Figure out a good config file to load if none was specified.
286 if (!defined($conf_fname))
288 # If the $KOHA_CONF environment variable is set, use
289 # that. Otherwise, use the built-in default.
290 if (exists $ENV{"KOHA_CONF"} and $ENV{'KOHA_CONF'} and -s $ENV{"KOHA_CONF"}) {
291 $conf_fname = $ENV{"KOHA_CONF"};
292 } elsif ($INSTALLED_CONFIG_FNAME !~ /__KOHA_CONF_DIR/ and -s $INSTALLED_CONFIG_FNAME) {
293 # NOTE: be careful -- don't change __KOHA_CONF_DIR in the above
294 # regex to anything else -- don't want installer to rewrite it
295 $conf_fname = $INSTALLED_CONFIG_FNAME;
296 } elsif (-s CONFIG_FNAME) {
297 $conf_fname = CONFIG_FNAME;
299 warn "unable to locate Koha configuration file koha-conf.xml";
303 # Load the desired config file.
304 $self = read_config_file($conf_fname);
305 $self->{"config_file"} = $conf_fname;
307 warn "read_config_file($conf_fname) returned undef" if !defined($self->{"config"});
308 return undef if !defined($self->{"config"});
310 $self->{"dbh"} = undef; # Database handle
311 $self->{"Zconn"} = undef; # Zebra Connections
312 $self->{"stopwords"} = undef; # stopwords list
313 $self->{"marcfromkohafield"} = undef; # the hash with relations between koha table fields and MARC field/subfield
314 $self->{"userenv"} = undef; # User env
315 $self->{"activeuser"} = undef; # current active user
316 $self->{"shelves"} = undef;
324 $context = new C4::Context;
325 $context->set_context();
327 set_context C4::Context $context;
330 restore_context C4::Context;
332 In some cases, it might be necessary for a script to use multiple
333 contexts. C<&set_context> saves the current context on a stack, then
334 sets the context to C<$context>, which will be used in future
335 operations. To restore the previous context, use C<&restore_context>.
343 my $new_context; # The context to set
345 # Figure out whether this is a class or instance method call.
347 # We're going to make the assumption that control got here
348 # through valid means, i.e., that the caller used an instance
349 # or class method call, and that control got here through the
350 # usual inheritance mechanisms. The caller can, of course,
351 # break this assumption by playing silly buggers, but that's
352 # harder to do than doing it properly, and harder to check
354 if (ref($self) eq "")
356 # Class method. The new context is the next argument.
357 $new_context = shift;
359 # Instance method. The new context is $self.
360 $new_context = $self;
363 # Save the old context, if any, on the stack
364 push @context_stack, $context if defined($context);
366 # Set the new context
367 $context = $new_context;
370 =item restore_context
374 Restores the context set by C<&set_context>.
383 if ($#context_stack < 0)
386 die "Context stack underflow";
389 # Pop the old context and set it.
390 $context = pop @context_stack;
392 # FIXME - Should this return something, like maybe the context
393 # that was current when this was called?
398 $value = C4::Context->config("config_variable");
400 $value = C4::Context->config_variable;
402 Returns the value of a variable specified in the configuration file
403 from which the current context was created.
405 The second form is more compact, but of course may conflict with
406 method names. If there is a configuration variable called "new", then
407 C<C4::Config-E<gt>new> will not return it.
411 sub _common_config ($$) {
414 return undef if !defined($context->{$term});
415 # Presumably $self->{$term} might be
416 # undefined if the config file given to &new
417 # didn't exist, and the caller didn't bother
418 # to check the return value.
420 # Return the value of the requested config variable
421 return $context->{$term}->{$var};
425 return _common_config($_[1],'config');
428 return _common_config($_[1],'server');
431 return _common_config($_[1],'serverinfo');
436 $sys_preference = C4::Context->preference("some_variable");
438 Looks up the value of the given system preference in the
439 systempreferences table of the Koha database, and returns it. If the
440 variable is not set, or in case of error, returns the undefined value.
445 # FIXME - The preferences aren't likely to change over the lifetime of
446 # the script (and things might break if they did change), so perhaps
447 # this function should cache the results it finds.
451 my $var = shift; # The system preference to return
452 my $retval; # Return value
453 my $dbh = C4::Context->dbh or return 0;
454 # Look up systempreferences.variable==$var
455 $retval = $dbh->selectrow_array(<<EOT);
457 FROM systempreferences
458 WHERE variable='$var'
464 sub boolean_preference ($) {
466 my $var = shift; # The system preference to return
467 my $it = preference($self, $var);
468 return defined($it)? C4::Boolean::true_p($it): undef;
472 # This implements C4::Config->foo, and simply returns
473 # C4::Context->config("foo"), as described in the documentation for
476 # FIXME - Perhaps this should be extended to check &config first, and
477 # then &preference if that fails. OTOH, AUTOLOAD could lead to crappy
478 # code, so it'd probably be best to delete it altogether so as not to
479 # encourage people to use it.
484 $AUTOLOAD =~ s/.*:://; # Chop off the package name,
485 # leaving only the function name.
486 return $self->config($AUTOLOAD);
491 $Zconn = C4::Context->Zconn
493 Returns a connection to the Zebra database for the current
494 context. If no connection has yet been made, this method
495 creates one and connects.
499 C<$server> one of the servers defined in the koha-conf.xml file
501 C<$async> whether this is a asynchronous connection
503 C<$auth> whether this connection has rw access (1) or just r access (0 or NULL)
515 if ( defined($context->{"Zconn"}->{$server}) && (0 == $context->{"Zconn"}->{$server}->errcode()) ) {
516 return $context->{"Zconn"}->{$server};
517 # No connection object or it died. Create one.
519 # release resources if we're closing a connection and making a new one
520 # FIXME: this needs to be smarter -- an error due to a malformed query or
521 # a missing index does not necessarily require us to close the connection
522 # and make a new one, particularly for a batch job. However, at
523 # first glance it does not look like there's a way to easily check
524 # the basic health of a ZOOM::Connection
525 $context->{"Zconn"}->{$server}->destroy() if defined($context->{"Zconn"}->{$server});
527 $context->{"Zconn"}->{$server} = &_new_Zconn($server,$async,$auth,$piggyback,$syntax);
528 return $context->{"Zconn"}->{$server};
534 $context->{"Zconn"} = &_new_Zconn($server,$async);
536 Internal function. Creates a new database connection from the data given in the current context and returns it.
538 C<$server> one of the servers defined in the koha-conf.xml file
540 C<$async> whether this is a asynchronous connection
542 C<$auth> whether this connection has rw access (1) or just r access (0 or NULL)
547 my ($server,$async,$auth,$piggyback,$syntax) = @_;
549 my $tried=0; # first attempt
550 my $Zconn; # connection object
551 $server = "biblioserver" unless $server;
552 $syntax = "usmarc" unless $syntax;
554 my $host = $context->{'listen'}->{$server}->{'content'};
555 my $servername = $context->{"config"}->{$server};
556 my $user = $context->{"serverinfo"}->{$server}->{"user"};
557 my $password = $context->{"serverinfo"}->{$server}->{"password"};
558 $auth = 1 if($user && $password);
562 my $o = new ZOOM::Options();
563 $o->option(user=>$user) if $auth;
564 $o->option(password=>$password) if $auth;
565 $o->option(async => 1) if $async;
566 $o->option(count => $piggyback) if $piggyback;
567 $o->option(cqlfile=> $context->{"server"}->{$server}->{"cql2rpn"});
568 $o->option(cclfile=> $context->{"serverinfo"}->{$server}->{"ccl2rpn"});
569 $o->option(preferredRecordSyntax => $syntax);
570 $o->option(elementSetName => "F"); # F for 'full' as opposed to B for 'brief'
571 $o->option(databaseName => ($servername?$servername:"biblios"));
573 # create a new connection object
574 $Zconn= create ZOOM::Connection($o);
577 $Zconn->connect($host, 0);
579 # check for errors and warn
580 if ($Zconn->errcode() !=0) {
581 warn "something wrong with the connection: ". $Zconn->errmsg();
586 # # Koha manages the Zebra server -- this doesn't work currently for me because of permissions issues
587 # # Also, I'm skeptical about whether it's the best approach
588 # warn "problem with Zebra";
589 # if ( C4::Context->preference("ManageZebra") ) {
590 # if ($@->code==10000 && $tried==0) { ##No connection try restarting Zebra
592 # warn "trying to restart Zebra";
593 # my $res=system("zebrasrv -f $ENV{'KOHA_CONF'} >/koha/log/zebra-error.log");
596 # warn "Error ", $@->code(), ": ", $@->message(), "\n";
606 # Internal helper function (not a method!). This creates a new
607 # database connection from the data given in the current context, and
613 ##correct name for db_schme
615 if ($context->config("db_scheme")){
616 $db_driver=db_scheme2dbi($context->config("db_scheme"));
621 my $db_name = $context->config("database");
622 my $db_host = $context->config("hostname");
623 my $db_port = $context->config("port");
624 $db_port = "" unless defined $db_port;
625 my $db_user = $context->config("user");
626 my $db_passwd = $context->config("pass");
627 # MJR added or die here, as we can't work without dbh
628 my $dbh= DBI->connect("DBI:$db_driver:dbname=$db_name;host=$db_host;port=$db_port",
629 $db_user, $db_passwd) or die $DBI::errstr;
630 if ( $db_driver eq 'mysql' ) {
631 # Koha 3.0 is utf-8, so force utf8 communication between mySQL and koha, whatever the mysql default config.
632 # this is better than modifying my.cnf (and forcing all communications to be in utf8)
633 $dbh->{'mysql_enable_utf8'}=1; #enable
634 $dbh->do("set NAMES 'utf8'");
636 elsif ( $db_driver eq 'Pg' ) {
637 $dbh->do( "set client_encoding = 'UTF8';" );
644 $dbh = C4::Context->dbh;
646 Returns a database handle connected to the Koha database for the
647 current context. If no connection has yet been made, this method
648 creates one, and connects to the database.
650 This database handle is cached for future use: if you call
651 C<C4::Context-E<gt>dbh> twice, you will get the same handle both
652 times. If you need a second database handle, use C<&new_dbh> and
653 possibly C<&set_dbh>.
663 if (defined($context->{"dbh"})) {
664 $sth=$context->{"dbh"}->prepare("select 1");
665 return $context->{"dbh"} if (defined($sth->execute));
668 # No database handle or it died . Create one.
669 $context->{"dbh"} = &_new_dbh();
671 return $context->{"dbh"};
676 $dbh = C4::Context->new_dbh;
678 Creates a new connection to the Koha database for the current context,
679 and returns the database handle (a C<DBI::db> object).
681 The handle is not saved anywhere: this method is strictly a
682 convenience function; the point is that it knows which database to
683 connect to so that the caller doesn't have to know.
697 $my_dbh = C4::Connect->new_dbh;
698 C4::Connect->set_dbh($my_dbh);
700 C4::Connect->restore_dbh;
702 C<&set_dbh> and C<&restore_dbh> work in a manner analogous to
703 C<&set_context> and C<&restore_context>.
705 C<&set_dbh> saves the current database handle on a stack, then sets
706 the current database handle to C<$my_dbh>.
708 C<$my_dbh> is assumed to be a good database handle.
718 # Save the current database handle on the handle stack.
719 # We assume that $new_dbh is all good: if the caller wants to
720 # screw himself by passing an invalid handle, that's fine by
722 push @{$context->{"dbh_stack"}}, $context->{"dbh"};
723 $context->{"dbh"} = $new_dbh;
728 C4::Context->restore_dbh;
730 Restores the database handle saved by an earlier call to
731 C<C4::Context-E<gt>set_dbh>.
740 if ($#{$context->{"dbh_stack"}} < 0)
743 die "DBH stack underflow";
746 # Pop the old database handle and set it.
747 $context->{"dbh"} = pop @{$context->{"dbh_stack"}};
749 # FIXME - If it is determined that restore_context should
750 # return something, then this function should, too.
753 =item marcfromkohafield
755 $dbh = C4::Context->marcfromkohafield;
757 Returns a hash with marcfromkohafield.
759 This hash is cached for future use: if you call
760 C<C4::Context-E<gt>marcfromkohafield> twice, you will get the same hash without real DB access
765 sub marcfromkohafield
769 # If the hash already exists, return it.
770 return $context->{"marcfromkohafield"} if defined($context->{"marcfromkohafield"});
772 # No hash. Create one.
773 $context->{"marcfromkohafield"} = &_new_marcfromkohafield();
775 return $context->{"marcfromkohafield"};
778 # _new_marcfromkohafield
779 # Internal helper function (not a method!). This creates a new
780 # hash with stopwords
781 sub _new_marcfromkohafield
783 my $dbh = C4::Context->dbh;
784 my $marcfromkohafield;
785 my $sth = $dbh->prepare("select frameworkcode,kohafield,tagfield,tagsubfield from marc_subfield_structure where kohafield > ''");
787 while (my ($frameworkcode,$kohafield,$tagfield,$tagsubfield) = $sth->fetchrow) {
789 $marcfromkohafield->{$frameworkcode}->{$kohafield} = [$tagfield,$tagsubfield];
791 return $marcfromkohafield;
796 $dbh = C4::Context->stopwords;
798 Returns a hash with stopwords.
800 This hash is cached for future use: if you call
801 C<C4::Context-E<gt>stopwords> twice, you will get the same hash without real DB access
810 # If the hash already exists, return it.
811 return $context->{"stopwords"} if defined($context->{"stopwords"});
813 # No hash. Create one.
814 $context->{"stopwords"} = &_new_stopwords();
816 return $context->{"stopwords"};
820 # Internal helper function (not a method!). This creates a new
821 # hash with stopwords
824 my $dbh = C4::Context->dbh;
826 my $sth = $dbh->prepare("select word from stopwords");
828 while (my $stopword = $sth->fetchrow_array) {
830 $stopwordlist->{$stopword} = uc($stopword);
832 $stopwordlist->{A} = "A" unless $stopwordlist;
833 return $stopwordlist;
838 C4::Context->userenv;
840 Builds a hash for user environment variables.
842 This hash shall be cached for future use: if you call
843 C<C4::Context-E<gt>userenv> twice, you will get the same hash without real DB access
845 set_userenv is called in Auth.pm
852 my $var = $context->{"activeuser"};
853 return $context->{"userenv"}->{$var} if (defined $context->{"userenv"}->{$var});
854 # insecure=1 management
855 if ($context->{"dbh"} && $context->preference('insecure')) {
857 $insecure{flags} = '16382';
858 $insecure{branchname} ='Insecure';
859 $insecure{number} ='0';
860 $insecure{cardnumber} ='0';
861 $insecure{id} = 'insecure';
862 $insecure{branch} = 'INS';
863 $insecure{emailaddress} = 'test@mode.insecure.com';
872 C4::Context->set_userenv($usernum, $userid, $usercnum, $userfirstname, $usersurname, $userbranch, $userflags, $emailaddress);
874 Informs a hash for user environment variables.
876 This hash shall be cached for future use: if you call
877 C<C4::Context-E<gt>userenv> twice, you will get the same hash without real DB access
879 set_userenv is called in Auth.pm
885 my ($usernum, $userid, $usercnum, $userfirstname, $usersurname, $userbranch, $branchname, $userflags, $emailaddress, $branchprinter)= @_;
886 my $var=$context->{"activeuser"};
888 "number" => $usernum,
890 "cardnumber" => $usercnum,
891 "firstname" => $userfirstname,
892 "surname" => $usersurname,
893 #possibly a law problem
894 "branch" => $userbranch,
895 "branchname" => $branchname,
896 "flags" => $userflags,
897 "emailaddress" => $emailaddress,
898 "branchprinter" => $branchprinter
900 $context->{userenv}->{$var} = $cell;
904 sub set_shelves_userenv ($$) {
905 my ($type, $shelves) = @_ or return undef;
906 my $activeuser = $context->{activeuser} or return undef;
907 $context->{userenv}->{$activeuser}->{barshelves} = $shelves if $type eq 'bar';
908 $context->{userenv}->{$activeuser}->{pubshelves} = $shelves if $type eq 'pub';
911 sub get_shelves_userenv () {
913 unless ($active = $context->{userenv}->{$context->{activeuser}}) {
914 warn "get_shelves_userenv cannot retrieve context->{userenv}->{context->{activeuser}}";
917 my $pubshelves = $active->{pubshelves} or undef;
918 my $barshelves = $active->{barshelves} or undef;# die "get_shelves_userenv: activeenv has no ->{shelves}";
919 return $pubshelves, $barshelves;
924 C4::Context->_new_userenv($session);
926 Builds a hash for user environment variables.
928 This hash shall be cached for future use: if you call
929 C<C4::Context-E<gt>userenv> twice, you will get the same hash without real DB access
931 _new_userenv is called in Auth.pm
940 $context->{"activeuser"}=$sessionID;
945 C4::Context->_unset_userenv;
947 Destroys the hash for activeuser user environment variables.
956 undef $context->{"activeuser"} if ($context->{"activeuser"} eq $sessionID);
962 C4::Context->get_versions
964 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'.
970 # A little example sub to show more debugging info for CGI::Carp
973 $versions{kohaVersion} = KOHAVERSION();
974 $versions{kohaDbVersion} = C4::Context->preference('version');
975 $versions{osVersion} = `uname -a`;
976 $versions{perlVersion} = $];
977 $versions{mysqlVersion} = `mysql -V`;
978 $versions{apacheVersion} = `httpd -v`;
979 $versions{apacheVersion} = `httpd2 -v` unless $versions{apacheVersion} ;
980 $versions{apacheVersion} = `apache2 -v` unless $versions{apacheVersion} ;
981 $versions{apacheVersion} = `/usr/sbin/apache2 -v` unless $versions{apacheVersion} ;
997 Specifies the configuration file to read.
1007 Andrew Arensburger <arensb at ooblick dot com>
1009 Joshua Ferraro <jmf at liblime dot com>
1013 # Revision 1.57 2007/05/22 09:13:55 tipaul
1014 # Bugfixes & improvements (various and minor) :
1015 # - updating templates to have tmpl_process3.pl running without any errors
1016 # - adding a drupal-like css for prog templates (with 3 small images)
1017 # - fixing some bugs in circulation & other scripts
1018 # - updating french translation
1019 # - fixing some typos in templates
1021 # Revision 1.56 2007/04/23 15:21:17 tipaul
1022 # renaming currenttransfers to transferstoreceive
1024 # Revision 1.55 2007/04/17 08:48:00 tipaul
1025 # circulation cleaning continued: bufixing
1027 # Revision 1.54 2007/03/29 16:45:53 tipaul
1028 # Code cleaning of Biblio.pm (continued)
1030 # All subs have be cleaned :
1033 # - reordering Biblio.pm completly
1034 # - using only naming conventions
1036 # Seems to have broken nothing, but it still has to be heavily tested.
1037 # Note that Biblio.pm is now much more efficient than previously & probably more reliable as well.
1039 # Revision 1.53 2007/03/29 13:30:31 tipaul
1041 # == Biblio.pm cleaning (useless) ==
1042 # * some sub declaration dropped
1043 # * removed modbiblio sub
1044 # * removed moditem sub
1045 # * removed newitems. It was used only in finishrecieve. Replaced by a TransformKohaToMarc+AddItem, that is better.
1046 # * removed MARCkoha2marcItem
1047 # * removed MARCdelsubfield declaration
1048 # * removed MARCkoha2marcBiblio
1050 # == Biblio.pm cleaning (naming conventions) ==
1051 # * MARCgettagslib renamed to GetMarcStructure
1052 # * MARCgetitems renamed to GetMarcItem
1053 # * MARCfind_frameworkcode renamed to GetFrameworkCode
1054 # * MARCmarc2koha renamed to TransformMarcToKoha
1055 # * MARChtml2marc renamed to TransformHtmlToMarc
1056 # * MARChtml2xml renamed to TranformeHtmlToXml
1057 # * zebraop renamed to ModZebra
1060 # * removing MARC=OFF related scripts (in cataloguing directory)
1061 # * removed checkitems (function related to MARC=off feature, that is completly broken in head. If someone want to reintroduce it, hard work coming...)
1062 # * removed getitemsbybiblioitem (used only by MARC=OFF scripts, that is removed as well)
1064 # Revision 1.52 2007/03/16 01:25:08 kados
1065 # Using my precrash CVS copy I did the following:
1067 # cvs -z3 -d:ext:kados@cvs.savannah.nongnu.org:/sources/koha co -P koha
1068 # find koha.precrash -type d -name "CVS" -exec rm -v {} \;
1069 # cp -r koha.precrash/* koha/
1073 # This should in theory put us right back where we were before the crash
1075 # Revision 1.52 2007/03/12 21:17:05 rych
1076 # add server, serverinfo as arrays from config
1078 # Revision 1.51 2007/03/09 14:31:47 tipaul
1079 # rel_3_0 moved to HEAD
1081 # Revision 1.43.2.10 2007/02/09 17:17:56 hdl
1082 # Managing a little better database absence.
1083 # (preventing from BIG 550)
1085 # Revision 1.43.2.9 2006/12/20 16:50:48 tipaul
1086 # improving "insecure" management
1089 # you told me that you had some libraries with insecure=ON (behind a firewall).
1090 # In this commit, I created a "fake" user when insecure=ON. It has a fake branch. You may find better to have the 1st branch in branch table instead of a fake one.
1092 # Revision 1.43.2.8 2006/12/19 16:48:16 alaurin
1093 # reident programs, and adding branchcode value in reserves
1095 # Revision 1.43.2.7 2006/12/06 21:55:38 hdl
1096 # Adding ModZebrations for servers to get serverinfos in Context.pm
1097 # Using this function in rebuild_zebra.pl
1099 # Revision 1.43.2.6 2006/11/24 21:18:31 kados
1100 # very minor changes, no functional ones, just comments, etc.
1102 # Revision 1.43.2.5 2006/10/30 13:24:16 toins
1103 # fix some minor POD error.
1105 # Revision 1.43.2.4 2006/10/12 21:42:49 hdl
1106 # Managing multiple zebra connections
1108 # Revision 1.43.2.3 2006/10/11 14:27:26 tipaul
1109 # removing a warning
1111 # Revision 1.43.2.2 2006/10/10 15:28:16 hdl
1112 # BUG FIXING : using database name in Zconn if defined and not hard coded value
1114 # Revision 1.43.2.1 2006/10/06 13:47:28 toins
1115 # Synch with dev_week.
1116 # /!\ WARNING :: Please now use the new version of koha.xml.
1118 # Revision 1.18.2.5.2.14 2006/09/24 15:24:06 kados
1119 # remove Zebraauth routine, fold the functionality into Zconn
1120 # Zconn can now take several arguments ... this will probably
1121 # change soon as I'm not completely happy with the readability
1122 # of the current format ... see the POD for details.
1124 # cleaning up Biblio.pm, removing unnecessary routines.
1126 # DeleteBiblio - used to delete a biblio from zebra and koha tables
1127 # -- checks to make sure there are no existing issues
1128 # -- saves backups of biblio,biblioitems,items in deleted* tables
1129 # -- does commit operation
1131 # getRecord - used to retrieve one record from zebra in piggyback mode using biblionumber
1132 # brought back z3950_extended_services routine
1134 # Lots of modifications to Context.pm, you can now store user and pass info for
1135 # multiple servers (for federated searching) using the <serverinfo> element.
1136 # I'll commit my koha.xml to demonstrate this or you can refer to the POD in
1137 # Context.pm (which I also expanded on).
1139 # Revision 1.18.2.5.2.13 2006/08/10 02:10:21 kados
1140 # Turned warnings on, and running a search turned up lots of warnings.
1141 # Cleaned up those ...
1143 # removed getitemtypes from Koha.pm (one in Search.pm looks newer)
1144 # removed itemcount from Biblio.pm
1146 # made some local subs local with a _ prefix (as they were redefined
1149 # Add two new search subs to Search.pm the start of a new search API
1150 # that's a bit more scalable
1152 # Revision 1.18.2.5.2.10 2006/07/21 17:50:51 kados
1153 # moving the *.properties files to intranetdir/etc dir
1155 # Revision 1.18.2.5.2.9 2006/07/17 08:05:20 tipaul
1156 # there was a hardcoded link to /koha/etc/ I replaced it with intranetdir config value
1158 # Revision 1.18.2.5.2.8 2006/07/11 12:20:37 kados
1159 # adding ccl and cql files ... Tumer, if you want to fit these into the
1160 # config file by all means do.
1162 # Revision 1.18.2.5.2.7 2006/06/04 22:50:33 tgarip1957
1163 # We do not hard code cql2rpn conversion file in context.pm our koha.xml configuration file already describes the path for this file.
1164 # At cql searching we use method CQL not CQL2RPN as the cql2rpn conversion file is defined at server level
1166 # Revision 1.18.2.5.2.6 2006/06/02 23:11:24 kados
1167 # Committing my working dev_week. It's been tested only with
1168 # searching, and there's quite a lot of config stuff to set up
1169 # beforehand. As things get closer to a release, we'll be making
1170 # some scripts to do it for us
1172 # Revision 1.18.2.5.2.5 2006/05/28 18:49:12 tgarip1957
1173 # This is an unusual commit. The main purpose is a working model of Zebra on a modified rel2_2.
1174 # Any questions regarding these commits should be asked to Joshua Ferraro unless you are Joshua whom I'll report to
1176 # Revision 1.36 2006/05/09 13:28:08 tipaul
1177 # adding the branchname and the librarian name in every page :
1178 # - modified userenv to add branchname
1179 # - modifier menus.inc to have the librarian name & userenv displayed on every page. they are in a librarian_information div.
1181 # Revision 1.35 2006/04/13 08:40:11 plg
1182 # bug fixed: typo on Zconnauth name
1184 # Revision 1.34 2006/04/10 21:40:23 tgarip1957
1185 # A new handler defined for zebra Zconnauth with read/write permission. Zconnauth should only be called in biblio.pm where write operations are. Use of this handler will break things unless koha.conf contains new variables:
1187 # zebraport=<your port>
1188 # zebrauser=<username>
1189 # zebrapass=<password>
1191 # The zebra.cfg file should read:
1194 # passw.c:<yourpasswordfile>
1196 # Password file should be prepared with Apaches htpasswd utility in encrypted mode and should exist in a folder zebra.cfg can read
1198 # Revision 1.33 2006/03/15 11:21:56 plg
1199 # bug fixed: utf-8 data where not displayed correctly in screens. Supposing
1200 # your data are truely utf-8 encoded in your database, they should be
1201 # correctly displayed. "set names 'UTF8'" on mysql connection (C4/Context.pm)
1202 # is mandatory and "binmode" to utf8 (C4/Interface/CGI/Output.pm) seemed to
1203 # converted data twice, so it was removed.
1205 # Revision 1.32 2006/03/03 17:25:01 hdl
1206 # Bug fixing : a line missed a comment sign.
1208 # Revision 1.31 2006/03/03 16:45:36 kados
1209 # Remove the search that tests the Zconn -- warning, still no fault
1212 # Revision 1.30 2006/02/22 00:56:59 kados
1213 # First go at a connection object for Zebra. You can now get a
1214 # connection object by doing:
1216 # my $Zconn = C4::Context->Zconn;
1218 # My initial tests indicate that as soon as your funcion ends
1219 # (ie, when you're done doing something) the connection will be
1220 # closed automatically. There may be some other way to make the
1221 # connection more stateful, I'm not sure...