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check some prereqs for installation

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This commit is contained in:
Evan Prodromou 2009-02-28 21:01:33 -08:00
parent 2ad667f704
commit 458c037867
1 changed files with 54 additions and 1 deletions
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55
install.php
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@ -3,7 +3,11 @@ define('INSTALLDIR', dirname(__FILE__));
function main()
{
checkPrereqs();
if (!checkPrereqs())
{
return;
}
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
handlePost();
} else {
@ -13,6 +17,55 @@ function main()
function checkPrereqs()
{
if (file_exists(INSTALLDIR.'/config.php')) {
?><p class="error">Config file &quot;config.php&quot; already exists.</p>
<?
return false;
}
if (version_compare(PHP_VERSION, '5.0.0', '<')) {
?><p class="error">Require PHP version 5 or greater.</p><?
return false;
}
$reqs = array('gd', 'mysql', 'curl',
'xmlwriter', 'mbstring',
'gettext');
foreach ($reqs as $req) {
if (!checkExtension($req)) {
?><p class="error">Cannot load required extension &quot;<?= $req ?>&quot;.</p><?
return false;
}
}
if (!is_writable(INSTALLDIR)) {
?><p class="error">Cannot write config file to &quot;<?= INSTALLDIR ?>&quot;.</p>
<p>On your server, try this command:</p>
<blockquote>chmod a+w <?= INSTALLDIR ?></blockquote>
<?
return false;
}
if (!is_writable(INSTALLDIR.'/avatar/')) {
?><p class="error">Cannot write avatar directory &quot;<?= INSTALLDIR ?>/avatar/&quot;.</p>
<p>On your server, try this command:</p>
<blockquote>chmod a+w <?= INSTALLDIR ?>/avatar/</blockquote>
<?
return false;
}
return true;
}
function checkExtension($name)
{
if (!extension_loaded($name)) {
if (!dl($name.'.so')) {
return false;
}
}
return true;
}
function showForm()