| 1 | ###########################################################################
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| 2 | #
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| 3 | # baseaction.pm --
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 2009 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistr te it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 |
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| 27 | package baseaction;
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| 28 |
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| 29 | use strict;
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| 30 |
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| 31 | use inexport;
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| 32 |
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| 33 | our $authenication_enabled = 0;
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| 34 | our $mail_enabled = 0;
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| 35 |
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| 36 |
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| 37 | # change this to get these values from a config file
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| 38 | my $mail_to_address = "user\@server"; # Set this appropriately
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| 39 | my $mail_from_address = "user\@server"; # Set this appropriately
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| 40 | my $mail_smtp_server = "smtp.server"; # Set this appropriately
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| 41 |
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| 42 |
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| 43 |
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| 44 | # Required CGI arguments: "a" for action
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| 45 | # "c" for collection
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| 46 | # Optional CGI arguemnts: "ts" for timestamp (auto generated is missing)
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| 47 | # "site" (used by Greenstone3)
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| 48 |
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| 49 | # allow "un" for username to be optional for now
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| 50 |
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| 51 | sub new
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| 52 | {
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| 53 | my $class = shift (@_);
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| 54 | my ($action_table,$gsdl_cgi,$iis6_mode) = @_;
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| 55 |
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| 56 | my $self = { 'gsdl_cgi' => $gsdl_cgi,
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| 57 | 'iis6_mode' => $iis6_mode,
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| 58 | 'gsdlhome' => $ENV{'GSDLHOME'} };
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| 59 |
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| 60 | # Retrieve the (required) command CGI argument
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| 61 | my $action = $gsdl_cgi->clean_param("a");
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| 62 |
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| 63 | if (!defined $action) {
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| 64 | my $err_mess = "No action (a=...) specified.\n";
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| 65 | $err_mess .= "\nPossible actions are:\n";
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| 66 |
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| 67 | $err_mess .= " check-installation\n\n";
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| 68 |
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| 69 | foreach my $a (keys %$action_table) {
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| 70 | $err_mess .= " $a:\n";
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| 71 | $err_mess .= " Compulsory args: ";
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| 72 | $err_mess .= join(", ", ("c", "un"),
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| 73 | @{$action_table->{$a}->{'compulsory-args'}});
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| 74 | $err_mess .= "\n";
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| 75 |
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| 76 | if (scalar(@{$action_table->{$a}->{'optional-args'}})>0) {
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| 77 |
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| 78 | $err_mess .= " Optional args : ";
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| 79 | $err_mess .= join(", ", @{$action_table->{$a}->{'optional-args'}});
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| 80 | $err_mess .= "\n";
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| 81 | }
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| 82 | $err_mess .= "\n";
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| 83 | }
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| 84 |
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| 85 | $gsdl_cgi->generate_message($err_mess);
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| 86 | exit(-1);
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| 87 |
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| 88 | }
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| 89 | $gsdl_cgi->delete("a");
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| 90 |
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| 91 | $self = bless $self, $class;
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| 92 |
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| 93 | # The check-installation command has no arguments
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| 94 | if ($action eq "check-installation") {
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| 95 | $self->check_installation($gsdl_cgi,$iis6_mode);
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| 96 | exit 0;
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| 97 | }
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| 98 |
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| 99 |
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| 100 | if (!defined $action_table->{$action}) {
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| 101 | my $valid_actions = join(", ", keys %$action_table);
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| 102 |
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| 103 | my $err_mess = "Unrecognised action (a=$action) specified.\n";
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| 104 | $err_mess .= "Valid actions are: $valid_actions\n";
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| 105 |
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| 106 | $gsdl_cgi->generate_error($err_mess);
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| 107 | }
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| 108 |
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| 109 |
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| 110 | my $collect = $gsdl_cgi->clean_param("c");
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| 111 | if ((!defined $collect) || ($collect =~ m/^\s*$/)) {
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| 112 | $gsdl_cgi->generate_error("No collection specified.");
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| 113 | }
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| 114 | $gsdl_cgi->delete("c");
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| 115 |
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| 116 | # allow un to be optional for now
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| 117 | my $username = $gsdl_cgi->clean_param("un");
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| 118 |
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| 119 |
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| 120 | # Get then remove the ts (timestamp) argument (since this can mess up
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| 121 | # other scripts)
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| 122 | my $timestamp = $gsdl_cgi->clean_param("ts");
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| 123 | if ((!defined $timestamp) || ($timestamp =~ m/^\s*$/)) {
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| 124 | # Fall back to using the Perl time() function to generate a timestamp
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| 125 | $timestamp = time();
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| 126 | }
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| 127 | $gsdl_cgi->delete("ts");
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| 128 |
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| 129 | my $site = undef;
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| 130 | if($gsdl_cgi->greenstone_version() != 2) {
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| 131 | # all GS versions after 2 may define site
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| 132 | $site = $gsdl_cgi->clean_param("site");
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| 133 | if (!defined $site) {
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| 134 | $gsdl_cgi->generate_error("No site specified.");
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| 135 | }
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| 136 | $gsdl_cgi->delete("site");
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| 137 | }
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| 138 |
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| 139 | $self->{'action'} = $action;
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| 140 | $self->{'collect'} = $collect;
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| 141 | $self->{'username'} = $username;
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| 142 | $self->{'timestamp'} = $timestamp;
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| 143 | $self->{'site'} = $site;
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| 144 |
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| 145 | # Locate and store compulsory arguments
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| 146 | my $comp_args = $action_table->{$action}->{'compulsory-args'};
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| 147 | foreach my $ca (@$comp_args) {
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| 148 | if (!defined $gsdl_cgi->param($ca)) {
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| 149 | $gsdl_cgi->generate_error("Compulsory argument '$ca' missing");
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| 150 | }
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| 151 | else {
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| 152 | $self->{$ca} = $gsdl_cgi->clean_param($ca);
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| 153 | $gsdl_cgi->delete($ca);
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| 154 | }
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| 155 | }
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| 156 |
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| 157 | # Locate and store optional args if present
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| 158 | my $opt_args = $action_table->{$action}->{'optional-args'};
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| 159 | foreach my $oa (@$opt_args) {
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| 160 | if (defined $gsdl_cgi->param($oa)) {
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| 161 |
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| 162 | $self->{$oa} = $gsdl_cgi->clean_param($oa);
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| 163 | $gsdl_cgi->delete($oa);
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| 164 | }
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| 165 | }
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| 166 |
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| 167 |
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| 168 | # Retrieve infodb-type
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| 169 | if (defined $collect) {
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| 170 | my $inexport = newCGI inexport("metadata-server",$collect);
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| 171 | my ($config_filename,$collect_cfg) = $inexport->read_collection_cfg($collect);
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| 172 | $self->{'infodbtype'} = $collect_cfg->{'infodbtype'};
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| 173 | }
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| 174 |
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| 175 | return $self;
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| 176 | }
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| 177 |
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| 178 |
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| 179 | sub do_action
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| 180 | {
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| 181 | my $self = shift @_;
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| 182 | my $action = $self->{'action'};
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| 183 |
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| 184 | $action =~ s/-/_/g;
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| 185 |
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| 186 |
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| 187 | $self->$action();
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| 188 |
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| 189 | }
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| 190 |
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| 191 |
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| 192 |
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| 193 |
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| 194 | sub authenticate_user
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| 195 | {
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| 196 | my $self = shift @_;
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| 197 | my $username = shift(@_);
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| 198 | my $collection = shift(@_);
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| 199 |
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| 200 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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| 201 |
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| 202 | # Remove the pw argument (since this can mess up other scripts)
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| 203 | my $user_password = $gsdl_cgi->clean_param("pw");
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| 204 | $gsdl_cgi->delete("pw");
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| 205 |
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| 206 | if ((!defined $user_password) || ($user_password =~ m/^\s*$/)) {
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| 207 | $gsdl_cgi->generate_error("Authentication failed: no password specified.");
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| 208 | }
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| 209 |
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| 210 | my $gsdlhome = $ENV{'GSDLHOME'};
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| 211 | my $etc_directory = &util::filename_cat($gsdlhome, "etc");
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| 212 | my $users_db_file_path = &util::filename_cat($etc_directory, "users.db");
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| 213 |
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| 214 | # Use db2txt to get the user accounts information
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| 215 | my $users_db_content = "";
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| 216 | open(USERS_DB, "db2txt \"$users_db_file_path\" |");
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| 217 | while (<USERS_DB>) {
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| 218 | $users_db_content .= $_;
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| 219 | }
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| 220 |
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| 221 | # Get the user account information from the users.db database
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| 222 | my %users_db_data = ();
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| 223 | foreach my $users_db_entry (split(/-{70}/, $users_db_content)) {
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| 224 | if ($users_db_entry =~ /\n?\[(.+)\]\n/) {
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| 225 | $users_db_data{$1} = $users_db_entry;
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| 226 | }
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| 227 | }
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| 228 |
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| 229 | # Check username
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| 230 | my $user_data = $users_db_data{$username};
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| 231 | if (!defined $user_data) {
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| 232 | $gsdl_cgi->generate_error("Authentication failed: no account for user '$username'.");
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| 233 | }
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| 234 |
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| 235 | # Check password
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| 236 | my ($valid_user_password) = ($user_data =~ /\<password\>(.*)/);
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| 237 | if ($user_password ne $valid_user_password) {
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| 238 | $gsdl_cgi->generate_error("Authentication failed: incorrect password.");
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| 239 | }
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| 240 |
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| 241 | # Check group
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| 242 | my ($user_groups) = ($user_data =~ /\<groups\>(.*)/);
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| 243 | if ($collection eq "") {
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| 244 | # If we're not editing a collection then the user doesn't need to be in a particular group
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| 245 | return $user_groups; # Authentication successful
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| 246 | }
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| 247 | foreach my $user_group (split(/\,/, $user_groups)) {
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| 248 | # Does this user have access to all collections?
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| 249 | if ($user_group eq "all-collections-editor") {
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| 250 | return $user_groups; # Authentication successful
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| 251 | }
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| 252 | # Does this user have access to personal collections, and is this one?
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| 253 | if ($user_group eq "personal-collections-editor" && $collection =~ /^$username\-/) {
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| 254 | return $user_groups; # Authentication successful
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| 255 | }
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| 256 | # Does this user have access to this collection
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| 257 | if ($user_group eq "$collection-collection-editor") {
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| 258 | return $user_groups; # Authentication successful
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| 259 | }
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| 260 | }
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| 261 |
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| 262 | $gsdl_cgi->generate_error("Authentication failed: user is not in the required group.");
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| 263 | }
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| 264 |
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| 265 |
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| 266 |
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| 267 | sub check_installation
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| 268 | {
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| 269 | my $self = shift @_;
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| 270 | my $iis6_mode = shift(@_);
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| 271 |
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| 272 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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| 273 |
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| 274 | my $installation_ok = 1;
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| 275 | my $installation_status = "";
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| 276 |
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| 277 | print STDOUT "Content-type:text/plain\n\n";
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| 278 |
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| 279 | # Check that Java is installed and accessible
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| 280 | my $java = $gsdl_cgi->get_java_path();
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| 281 | my $java_command = "$java -version 2>&1";
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| 282 |
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| 283 | # IIS 6: redirecting output from STDERR to STDOUT just doesn't work, so we have to let it go
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| 284 | # directly out to the page
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| 285 | if ($iis6_mode)
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| 286 | {
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| 287 | $java_command = "java -version";
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| 288 | }
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| 289 |
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| 290 | my $java_output = `$java_command`;
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| 291 | my $java_status = $?;
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| 292 | if ($java_status < 0) {
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| 293 | # The Java command failed
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| 294 | $installation_status = "Java failed -- do you have the Java run-time installed?\n" . $gsdl_cgi->check_java_home() . "\n";
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| 295 | $installation_ok = 0;
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| 296 | }
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| 297 | else {
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| 298 | $installation_status = "Java found: $java_output";
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| 299 | }
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| 300 |
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| 301 | # Show the values of some important environment variables
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| 302 | $installation_status .= "\n";
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| 303 | $installation_status .= "GSDLHOME: " . $ENV{'GSDLHOME'} . "\n";
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| 304 | $installation_status .= "GSDLOS: " . $ENV{'GSDLOS'} . "\n";
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| 305 | $installation_status .= "PATH: " . $ENV{'PATH'} . "\n";
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| 306 |
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| 307 | if ($installation_ok) {
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| 308 | print STDOUT $installation_status . "\nInstallation OK!";
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| 309 | }
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| 310 | else {
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| 311 | print STDOUT $installation_status;
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| 312 | }
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| 313 | }
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| 314 |
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| 315 | sub lock_collection
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| 316 | {
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| 317 | my $self = shift @_;
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| 318 | my $username = shift(@_);
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| 319 | my $collection = shift(@_);
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| 320 |
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| 321 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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| 322 |
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| 323 | my $steal_lock = $gsdl_cgi->clean_param("steal_lock");
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| 324 | $gsdl_cgi->delete("steal_lock");
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| 325 |
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| 326 | if (!defined $username) {
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| 327 | # don't have any user details for current user to compare with
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| 328 | # even if there is a lock file
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| 329 | # For now, allow the current user access. Might want to
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| 330 | # revisit this in the future.
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| 331 | return;
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| 332 | }
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| 333 |
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| 334 | my $gsdlhome = $ENV{'GSDLHOME'};
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| 335 | my $collection_directory = &util::filename_cat($gsdlhome, "collect", $collection);
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| 336 | $gsdl_cgi->checked_chdir($collection_directory);
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| 337 |
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| 338 | # Check if a lock file already exists for this collection
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| 339 | my $lock_file_name = "gli.lck";
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| 340 | if (-e $lock_file_name) {
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| 341 | # A lock file already exists... check if it's ours
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| 342 | my $lock_file_content = "";
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| 343 | open(LOCK_FILE, "<$lock_file_name");
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| 344 | while (<LOCK_FILE>) {
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| 345 | $lock_file_content .= $_;
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| 346 | }
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| 347 | close(LOCK_FILE);
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| 348 |
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| 349 | # Pick out the owner of the lock file
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| 350 | $lock_file_content =~ /\<User\>(.*?)\<\/User\>/;
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| 351 | my $lock_file_owner = $1;
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| 352 |
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| 353 | # The lock file is ours, so there is no problem
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| 354 | if ($lock_file_owner eq $username) {
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| 355 | return;
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| 356 | }
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| 357 |
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| 358 | # The lock file is not ours, so throw an error unless "steal_lock" is set
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| 359 | unless (defined $steal_lock) {
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| 360 | $gsdl_cgi->generate_error("Collection is locked by: $lock_file_owner");
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| 361 | }
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| 362 | }
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| 363 |
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| 364 | my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time);
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| 365 | my $current_time = sprintf("%02d/%02d/%d %02d:%02d:%02d", $mday, $mon + 1, $year + 1900, $hour, $min, $sec);
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| 366 |
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| 367 | # Create a lock file for us (in the same format as the GLI) and we're done
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| 368 | open(LOCK_FILE, ">$lock_file_name");
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| 369 | print LOCK_FILE "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
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| 370 | print LOCK_FILE "<LockFile>\n";
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| 371 | print LOCK_FILE " <User>" . $username . "</User>\n";
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| 372 | print LOCK_FILE " <Machine>(Remote)</Machine>\n";
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| 373 | print LOCK_FILE " <Date>" . $current_time . "</Date>\n";
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| 374 | print LOCK_FILE "</LockFile>\n";
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| 375 | close(LOCK_FILE);
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| 376 | }
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| 377 |
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| 378 |
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| 379 | # Release the gli.lck otherwise no one else will be able to use the collection again.
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| 380 | sub unlock_collection
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| 381 | {
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| 382 | my $self = shift @_;
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| 383 | my ($username, $collection) = @_;
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| 384 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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| 385 |
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| 386 | # Obtain the path to the collection GLI lock file
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| 387 | my $lock_file_path = &util::filename_cat($ENV{'GSDLHOME'}, "collect", $collection, "gli.lck");
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| 388 |
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| 389 | # If the lock file does exist, check if it is ours
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| 390 | if (-e $lock_file_path)
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| 391 | {
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| 392 | my $lock_file_content = "";
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| 393 | open(LOCK_FILE, "<$lock_file_path");
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| 394 | while (<LOCK_FILE>) {
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| 395 | $lock_file_content .= $_;
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| 396 | }
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| 397 | close(LOCK_FILE);
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| 398 |
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| 399 | # Pick out the owner of the lock file
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| 400 | $lock_file_content =~ /\<User\>(.*?)\<\/User\>/;
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| 401 | my $lock_file_owner = $1;
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| 402 |
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| 403 | # If we are the owner of this lock, we have the right to delete it
|
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| 404 | if ($lock_file_owner eq $username) {
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| 405 | unlink($lock_file_path );
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| 406 | }
|
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| 407 | else {
|
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| 408 | $gsdl_cgi->generate_error("Collection is locked by: $lock_file_owner. Cannot be unlocked");
|
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| 409 | }
|
|---|
| 410 | }
|
|---|
| 411 | }
|
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| 412 |
|
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| 413 |
|
|---|
| 414 | sub send_mail
|
|---|
| 415 | {
|
|---|
| 416 | my $self = shift @_;
|
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| 417 |
|
|---|
| 418 | my ($mail_subject,$mail_content) = @_;
|
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| 419 |
|
|---|
| 420 | my $gsdl_cgi = $self->{'gsdl_cgi'};
|
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| 421 |
|
|---|
| 422 | my $sendmail_command = "perl -S sendmail.pl";
|
|---|
| 423 | $sendmail_command .= " -to \"" . $mail_to_address . "\"";
|
|---|
| 424 | $sendmail_command .= " -from \"" . $mail_from_address . "\"";
|
|---|
| 425 | $sendmail_command .= " -smtp \"" . $mail_smtp_server . "\"";
|
|---|
| 426 | $sendmail_command .= " -subject \"" . $mail_subject . "\"";
|
|---|
| 427 |
|
|---|
| 428 | if (!open(POUT, "| $sendmail_command")) {
|
|---|
| 429 | $gsdl_cgi->generate_error("Unable to execute command: $sendmail_command");
|
|---|
| 430 | }
|
|---|
| 431 | print POUT $mail_content . "\n";
|
|---|
| 432 | close(POUT);
|
|---|
| 433 | }
|
|---|
| 434 |
|
|---|
| 435 |
|
|---|
| 436 |
|
|---|
| 437 |
|
|---|
| 438 | sub run_script
|
|---|
| 439 | {
|
|---|
| 440 | my $self = shift @_;
|
|---|
| 441 |
|
|---|
| 442 | my ($collect, $site, $script) = @_;
|
|---|
| 443 |
|
|---|
| 444 | my $gsdl_cgi = $self->{'gsdl_cgi'};
|
|---|
| 445 |
|
|---|
| 446 | my $perl_args = $collect;
|
|---|
| 447 |
|
|---|
| 448 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
|
|---|
| 449 | $perl_args = "-collectdir \"$collect_dir\" " . $perl_args;
|
|---|
| 450 |
|
|---|
| 451 | my $perl_command = "perl -S $script $perl_args";
|
|---|
| 452 |
|
|---|
| 453 |
|
|---|
| 454 | # IIS 6: redirecting output from STDERR to STDOUT just doesn't work, so
|
|---|
| 455 | # we have to let it go directly out to the page
|
|---|
| 456 |
|
|---|
| 457 | if (!$self->{'iis6_mode'})
|
|---|
| 458 | {
|
|---|
| 459 | $perl_command .= " 2>&1";
|
|---|
| 460 | }
|
|---|
| 461 |
|
|---|
| 462 | if (!open(PIN, "$perl_command |")) {
|
|---|
| 463 | $gsdl_cgi->generate_error("Unable to execute command: $perl_command");
|
|---|
| 464 | }
|
|---|
| 465 |
|
|---|
| 466 | print STDOUT "Content-type:text/plain\n\n";
|
|---|
| 467 | print "$perl_command \n";
|
|---|
| 468 |
|
|---|
| 469 | while (defined (my $perl_output_line = <PIN>)) {
|
|---|
| 470 | print STDOUT $perl_output_line;
|
|---|
| 471 | }
|
|---|
| 472 | close(PIN);
|
|---|
| 473 |
|
|---|
| 474 | my $perl_status = $?;
|
|---|
| 475 | if ($perl_status > 0) {
|
|---|
| 476 | $gsdl_cgi->generate_error("Perl failed: $perl_command\n--\nExit status: " . ($perl_status / 256));
|
|---|
| 477 | }
|
|---|
| 478 | }
|
|---|
| 479 |
|
|---|
| 480 |
|
|---|
| 481 |
|
|---|
| 482 |
|
|---|
| 483 | 1;
|
|---|
