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 | use util;
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31 | use inexport;
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32 |
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33 | our $authentication_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 $a (sort keys %$action_table) {
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70 | $err_mess .= " $a:\n";
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71 | $err_mess .= " Compulsory args: ";
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72 | my @comp_args = ("c");
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73 | push(@comp_args,"un") if ($authentication_enabled);
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74 | push(@comp_args,@{$action_table->{$a}->{'compulsory-args'}});
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75 | $err_mess .= join(", ", @comp_args);
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76 |
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77 | $err_mess .= "\n";
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78 |
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79 | my @opt_args = ();
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80 | push(@opt_args,"un") if (!$authentication_enabled);
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81 | push(@opt_args,@{$action_table->{$a}->{'optional-args'}});
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82 |
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83 | if (scalar(@opt_args)>0) {
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84 |
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85 | $err_mess .= " Optional args : ";
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86 | $err_mess .= join(", ", @opt_args);
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87 | $err_mess .= "\n";
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88 | }
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89 |
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90 | my @help_examples = ();
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91 | if(defined $action_table->{$a}->{'help-string'}) {
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92 | push(@help_examples, @{$action_table->{$a}->{'help-string'}});
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93 | }
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94 | if (scalar(@help_examples)>0) {
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95 |
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96 | if (scalar(@help_examples)>1) {
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97 | $err_mess .= " Example(s) :\n";
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98 | } else {
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99 | $err_mess .= " Example :\n";
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100 | }
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101 | $err_mess .= join(", \n\n", @help_examples);
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102 | $err_mess .= "\n\nTo be strictly CGI-compliant special chars like double-quotes,&,?,<,> must be URL encoded.\n";
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103 | }
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104 |
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105 | $err_mess .= "\n";
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106 | }
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107 |
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108 | $gsdl_cgi->generate_message($err_mess);
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109 | exit(-1);
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110 |
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111 | }
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112 | $gsdl_cgi->delete("a");
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113 |
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114 | $self = bless $self, $class;
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115 |
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116 | # The check-installation command has no arguments
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117 | if ($action eq "check-installation") {
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118 | $self->check_installation($gsdl_cgi,$iis6_mode);
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119 | exit 0;
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120 | }
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121 |
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122 |
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123 | if (!defined $action_table->{$action}) {
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124 | my $valid_actions = join(", ", keys %$action_table);
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125 |
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126 | my $err_mess = "Unrecognised action (a=$action) specified.\n";
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127 | $err_mess .= "Valid actions are: $valid_actions\n";
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128 |
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129 | $gsdl_cgi->generate_error($err_mess);
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130 | }
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131 |
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132 |
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133 | my $collect = $gsdl_cgi->clean_param("c");
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134 | if ((!defined $collect) || ($collect =~ m/^\s*$/)) {
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135 | $gsdl_cgi->generate_error("No collection specified.");
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136 | }
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137 | $gsdl_cgi->delete("c");
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138 |
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139 | # allow un to be optional for now
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140 | my $username = $gsdl_cgi->clean_param("un");
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141 |
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142 |
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143 | # Get then remove the ts (timestamp) argument (since this can mess up
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144 | # other scripts)
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145 | my $timestamp = $gsdl_cgi->clean_param("ts");
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146 | if ((!defined $timestamp) || ($timestamp =~ m/^\s*$/)) {
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147 | # Fall back to using the Perl time() function to generate a timestamp
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148 | $timestamp = time();
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149 | }
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150 | $gsdl_cgi->delete("ts");
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151 |
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152 | my $site = undef;
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153 | if($gsdl_cgi->greenstone_version() != 2) {
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154 | # all GS versions after 2 may define site
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155 | $site = $gsdl_cgi->clean_param("site");
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156 | if (!defined $site) {
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157 | $gsdl_cgi->generate_error("No site specified.");
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158 | }
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159 | $gsdl_cgi->delete("site");
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160 | }
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161 |
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162 |
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163 | $self->{'action'} = $action;
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164 | $self->{'collect'} = $collect;
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165 | $self->{'username'} = $username;
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166 | $self->{'timestamp'} = $timestamp;
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167 | $self->{'site'} = $site;
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168 |
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169 | # Locate and store compulsory arguments
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170 | my $comp_args = $action_table->{$action}->{'compulsory-args'};
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171 | foreach my $ca (@$comp_args) {
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172 | if (!defined $gsdl_cgi->param($ca)) {
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173 | $gsdl_cgi->generate_error("Compulsory argument '$ca' missing");
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174 | }
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175 | else {
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176 | $self->{$ca} = $gsdl_cgi->clean_param($ca);
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177 | $gsdl_cgi->delete($ca);
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178 | }
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179 | }
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180 |
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181 | # Locate and store optional args if present
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182 | my $opt_args = $action_table->{$action}->{'optional-args'};
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183 | foreach my $oa (@$opt_args) {
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184 | if (defined $gsdl_cgi->param($oa)) {
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185 | $self->{$oa} = $gsdl_cgi->clean_param($oa);
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186 | $gsdl_cgi->delete($oa);
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187 | }
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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 | # Retrieve infodb-type
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193 | if (defined $collect) {
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194 |
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195 | my $opt_site = $self->{'site'} || "";
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196 |
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197 | my $inexport = newCGI inexport(ref $self,$collect,$gsdl_cgi,$opt_site);
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198 | my ($config_filename,$collect_cfg) = $inexport->read_collection_cfg($collect);
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199 | $self->{'infodbtype'} = $collect_cfg->{'infodbtype'};
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200 |
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201 | }
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202 |
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203 |
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204 | return $self;
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205 | }
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206 |
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207 |
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208 | sub do_action
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209 | {
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210 | my $self = shift @_;
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211 | my $action = $self->{'action'};
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212 |
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213 | $action =~ s/-/_/g;
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214 |
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215 |
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216 | $self->$action();
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217 |
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218 | }
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219 |
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220 |
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221 | sub authenticate_user
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222 | {
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223 | my $self = shift @_;
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224 | my $username = shift(@_);
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225 | my $collection = shift(@_);
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226 |
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227 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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228 |
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229 | # Remove the pw argument (since this can mess up other scripts)
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230 | my $user_password = $gsdl_cgi->clean_param("pw");
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231 | $gsdl_cgi->delete("pw");
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232 |
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233 | if ((!defined $user_password) || ($user_password =~ m/^\s*$/)) {
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234 | $gsdl_cgi->generate_error("Authentication failed: no password specified.");
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235 | }
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236 |
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237 | my $gsdlhome = $ENV{'GSDLHOME'};
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238 | my $etc_directory = &util::filename_cat($gsdlhome, "etc");
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239 | my $users_db_file_path = &util::filename_cat($etc_directory, "users.db");
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240 |
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241 | # Use db2txt to get the user accounts information
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242 | my $users_db_content = "";
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243 | open(USERS_DB, "db2txt \"$users_db_file_path\" |");
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244 | while (<USERS_DB>) {
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245 | $users_db_content .= $_;
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246 | }
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247 |
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248 | # Get the user account information from the users.db database
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249 | my %users_db_data = ();
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250 | foreach my $users_db_entry (split(/-{70}/, $users_db_content)) {
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251 | if ($users_db_entry =~ /\n?\[(.+)\]\n/) {
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252 | $users_db_data{$1} = $users_db_entry;
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253 | }
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254 | }
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255 |
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256 | # Check username
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257 | my $user_data = $users_db_data{$username};
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258 | if (!defined $user_data) {
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259 | $gsdl_cgi->generate_error("Authentication failed: no account for user '$username'.");
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260 | }
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261 |
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262 | # Check password
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263 | my ($valid_user_password) = ($user_data =~ /\<password\>(.*)/);
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264 | if ($user_password ne $valid_user_password) {
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265 | $gsdl_cgi->generate_error("Authentication failed: incorrect password.");
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266 | }
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267 |
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268 | # Check group
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269 | my ($user_groups) = ($user_data =~ /\<groups\>(.*)/);
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270 | if ($collection eq "") {
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271 | # If we're not editing a collection then the user doesn't need to be in a particular group
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272 | return $user_groups; # Authentication successful
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273 | }
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274 | foreach my $user_group (split(/\,/, $user_groups)) {
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275 | # Does this user have access to all collections?
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276 | if ($user_group eq "all-collections-editor") {
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277 | return $user_groups; # Authentication successful
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278 | }
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279 | # Does this user have access to personal collections, and is this one?
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280 | if ($user_group eq "personal-collections-editor" && $collection =~ /^$username\-/) {
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281 | return $user_groups; # Authentication successful
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282 | }
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283 | # Does this user have access to this collection
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284 | if ($user_group eq "$collection-collection-editor") {
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285 | return $user_groups; # Authentication successful
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286 | }
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287 | }
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288 |
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289 | $gsdl_cgi->generate_error("Authentication failed: user is not in the required group.");
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290 | }
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291 |
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292 |
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293 |
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294 | sub check_installation
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295 | {
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296 | my $self = shift @_;
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297 | my $iis6_mode = shift(@_);
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298 |
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299 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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300 |
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301 | my $installation_ok = 1;
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302 | my $installation_status = "";
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303 |
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304 | print STDOUT "Content-type:text/plain\n\n";
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305 |
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306 | # Check that Java is installed and accessible
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307 | my $java = $gsdl_cgi->get_java_path();
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308 | my $java_command = "$java -version 2>&1";
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309 |
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310 | # IIS 6: redirecting output from STDERR to STDOUT just doesn't work, so we have to let it go
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311 | # directly out to the page
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312 | if ($iis6_mode)
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313 | {
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314 | $java_command = "java -version";
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315 | }
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316 |
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317 | my $java_output = `$java_command`;
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318 | my $java_status = $?;
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319 | if ($java_status < 0) {
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320 | # The Java command failed
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321 | $installation_status = "Java failed -- do you have the Java run-time installed?\n" . $gsdl_cgi->check_java_home() . "\n";
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322 | $installation_ok = 0;
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323 | }
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324 | else {
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325 | $installation_status = "Java found: $java_output";
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326 | }
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327 |
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328 | # Show the values of some important environment variables
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329 | $installation_status .= "\n";
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330 | $installation_status .= "GSDLHOME: " . $ENV{'GSDLHOME'} . "\n";
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331 | $installation_status .= "GSDLOS: " . $ENV{'GSDLOS'} . "\n";
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332 | $installation_status .= "PATH: " . $ENV{'PATH'} . "\n";
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333 |
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334 | if ($installation_ok) {
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335 | print STDOUT $installation_status . "\nInstallation OK!";
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336 | }
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337 | else {
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338 | print STDOUT $installation_status;
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339 | }
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340 | }
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341 |
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342 | sub lock_collection
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343 | {
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344 | my $self = shift @_;
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345 | my $username = shift(@_);
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346 | my $collection = shift(@_);
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347 |
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348 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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349 |
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350 | my $steal_lock = $gsdl_cgi->clean_param("steal_lock");
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351 | $gsdl_cgi->delete("steal_lock");
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352 |
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353 | if (!defined $username) {
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354 | # don't have any user details for current user to compare with
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355 | # even if there is a lock file
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356 | # For now, allow the current user access. Might want to
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357 | # revisit this in the future.
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358 | return;
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359 | }
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360 |
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361 | #my $gsdlhome = $ENV{'GSDLHOME'};
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362 | #my $collection_directory = &util::filename_cat($gsdlhome, "collect", $collection);
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363 | my $site = $self->{'site'};
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364 | my $collection_directory = $gsdl_cgi->get_collection_dir($site, $collection);
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365 | $gsdl_cgi->checked_chdir($collection_directory);
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366 |
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367 | # Check if a lock file already exists for this collection
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368 | my $lock_file_name = "gli.lck";
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369 | if (-e $lock_file_name) {
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370 | # A lock file already exists... check if it's ours
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371 | my $lock_file_content = "";
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372 | open(LOCK_FILE, "<$lock_file_name");
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373 | while (<LOCK_FILE>) {
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374 | $lock_file_content .= $_;
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375 | }
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376 | close(LOCK_FILE);
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377 |
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378 | # Pick out the owner of the lock file
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379 | $lock_file_content =~ /\<User\>(.*?)\<\/User\>/;
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380 | my $lock_file_owner = $1;
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381 |
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382 | # The lock file is ours, so there is no problem
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383 | if ($lock_file_owner eq $username) {
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384 | return;
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385 | }
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386 |
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387 | # The lock file is not ours, so throw an error unless "steal_lock" is set
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388 | unless (defined $steal_lock) {
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389 | $gsdl_cgi->generate_error("Collection is locked by: $lock_file_owner");
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390 | }
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391 | }
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392 |
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393 | my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time);
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394 | my $current_time = sprintf("%02d/%02d/%d %02d:%02d:%02d", $mday, $mon + 1, $year + 1900, $hour, $min, $sec);
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395 |
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396 | # Create a lock file for us (in the same format as the GLI) and we're done
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397 | open(LOCK_FILE, ">$lock_file_name");
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398 | print LOCK_FILE "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
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399 | print LOCK_FILE "<LockFile>\n";
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400 | print LOCK_FILE " <User>" . $username . "</User>\n";
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401 | print LOCK_FILE " <Machine>(Remote)</Machine>\n";
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402 | print LOCK_FILE " <Date>" . $current_time . "</Date>\n";
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403 | print LOCK_FILE "</LockFile>\n";
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404 | close(LOCK_FILE);
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405 | }
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406 |
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407 |
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408 | # Release the gli.lck otherwise no one else will be able to use the collection again.
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409 | sub unlock_collection
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410 | {
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411 | my $self = shift @_;
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412 | my ($username, $collection) = @_;
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413 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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414 |
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415 | # Obtain the path to the collection GLI lock file
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416 | my $lock_file_path = &util::filename_cat($ENV{'GSDLHOME'}, "collect", $collection, "gli.lck");
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417 |
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418 | # If the lock file does exist, check if it is ours
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419 | if (-e $lock_file_path)
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420 | {
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421 | my $lock_file_content = "";
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422 | open(LOCK_FILE, "<$lock_file_path");
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423 | while (<LOCK_FILE>) {
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424 | $lock_file_content .= $_;
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425 | }
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426 | close(LOCK_FILE);
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427 |
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428 | # Pick out the owner of the lock file
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429 | $lock_file_content =~ /\<User\>(.*?)\<\/User\>/;
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430 | my $lock_file_owner = $1;
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431 |
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432 | # If we are the owner of this lock, we have the right to delete it
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433 | if ($lock_file_owner eq $username) {
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434 | unlink($lock_file_path );
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435 | }
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436 | else {
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437 | $gsdl_cgi->generate_error("Collection is locked by: $lock_file_owner. Cannot be unlocked");
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438 | }
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439 | }
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440 | }
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441 |
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442 |
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443 | sub send_mail
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444 | {
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445 | my $self = shift @_;
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446 |
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447 | my ($mail_subject,$mail_content) = @_;
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448 |
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449 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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450 |
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451 | my $sendmail_command = "\"".&util::get_perl_exec()."\" -S sendmail.pl";
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452 | $sendmail_command .= " -to \"" . $mail_to_address . "\"";
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453 | $sendmail_command .= " -from \"" . $mail_from_address . "\"";
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454 | $sendmail_command .= " -smtp \"" . $mail_smtp_server . "\"";
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455 | $sendmail_command .= " -subject \"" . $mail_subject . "\"";
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456 |
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457 | if (!open(POUT, "| $sendmail_command")) {
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458 | $gsdl_cgi->generate_error("Unable to execute command: $sendmail_command");
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459 | }
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460 | print POUT $mail_content . "\n";
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461 | close(POUT);
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462 | }
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463 |
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464 |
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465 | sub run_script
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466 | {
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467 | my $self = shift @_;
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468 |
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469 | my ($collect, $site, $script) = @_;
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470 |
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471 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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472 |
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473 | my $perl_args = $collect;
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474 |
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475 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
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476 | $perl_args = "-collectdir \"$collect_dir\" " . $perl_args;
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477 |
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478 | my $perl_command = "\"".&util::get_perl_exec()."\" -S $script $perl_args";
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479 |
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480 |
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481 | # IIS 6: redirecting output from STDERR to STDOUT just doesn't work, so
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482 | # we have to let it go directly out to the page
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483 |
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484 | if (!$self->{'iis6_mode'})
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485 | {
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486 | $perl_command .= " 2>&1";
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487 | }
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488 |
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489 | if (!open(PIN, "$perl_command |")) {
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490 | $gsdl_cgi->generate_error("Unable to execute command: $perl_command");
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491 | }
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492 |
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493 | print STDOUT "Content-type:text/plain\n\n";
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494 | print "$perl_command \n";
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495 |
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496 | while (defined (my $perl_output_line = <PIN>)) {
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497 | print STDOUT $perl_output_line;
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498 | }
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499 | close(PIN);
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500 |
|
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501 | my $perl_status = $?;
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502 | if ($perl_status > 0) {
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503 | $gsdl_cgi->generate_error("Perl failed: $perl_command\n--\nExit status: " . ($perl_status / 256));
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504 | }
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505 | }
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506 |
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507 | 1;
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