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smd_prognostics.php
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smd_prognostics.php
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<?php
// This is a PLUGIN TEMPLATE for Textpattern CMS.
// Copy this file to a new name like abc_myplugin.php. Edit the code, then
// run this file at the command line to produce a plugin for distribution:
// $ php abc_myplugin.php > abc_myplugin-0.1.txt
// Plugin name is optional. If unset, it will be extracted from the current
// file name. Plugin names should start with a three letter prefix which is
// unique and reserved for each plugin author ("abc" is just an example).
// Uncomment and edit this line to override:
$plugin['name'] = 'smd_prognostics';
// Allow raw HTML help, as opposed to Textile.
// 0 = Plugin help is in Textile format, no raw HTML allowed (default).
// 1 = Plugin help is in raw HTML. Not recommended.
# $plugin['allow_html_help'] = 1;
$plugin['version'] = '0.5.1';
$plugin['author'] = 'Stef Dawson';
$plugin['author_uri'] = 'https://stefdawson.com/';
$plugin['description'] = 'Pro-active diagnostics that alarm when things have changed in Textpattern';
// Plugin load order:
// The default value of 5 would fit most plugins, while for instance comment
// spam evaluators or URL redirectors would probably want to run earlier
// (1...4) to prepare the environment for everything else that follows.
// Values 6...9 should be considered for plugins which would work late.
// This order is user-overrideable.
$plugin['order'] = '1';
// Plugin 'type' defines where the plugin is loaded
// 0 = public : only on the public side of the website (default)
// 1 = public+admin : on both the public and admin side
// 2 = library : only when include_plugin() or require_plugin() is called
// 3 = admin : only on the admin side (no AJAX)
// 4 = admin+ajax : only on the admin side (AJAX supported)
// 5 = public+admin+ajax : on both the public and admin side (AJAX supported)
$plugin['type'] = '1';
// Plugin "flags" signal the presence of optional capabilities to the core plugin loader.
// Use an appropriately OR-ed combination of these flags.
// The four high-order bits 0xf000 are available for this plugin's private use
if (!defined('PLUGIN_HAS_PREFS')) define('PLUGIN_HAS_PREFS', 0x0001); // This plugin wants to receive "plugin_prefs.{$plugin['name']}" events
if (!defined('PLUGIN_LIFECYCLE_NOTIFY')) define('PLUGIN_LIFECYCLE_NOTIFY', 0x0002); // This plugin wants to receive "plugin_lifecycle.{$plugin['name']}" events
$plugin['flags'] = '1';
// Plugin 'textpack' is optional. It provides i18n strings to be used in conjunction with gTxt().
// Syntax:
// ## arbitrary comment
// #@event
// #@language ISO-LANGUAGE-CODE
// abc_string_name => Localized String
$plugin['textpack'] = <<<EOT
#@language en, en-gb, en-us
#@admin-side
smd_prognostics => Prognostics
#@smd_prognostics
smd_prognostics_acked => Alarms acknowledged.
smd_prognostics_alarm_freq => Alarm on detection and every:
smd_prognostics_and => and
smd_prognostics_auth_users => Restrict prognostic config to:
smd_prognostics_block => Block
smd_prognostics_btn_ackit => Acknowledge
smd_prognostics_btn_csi => Send Forensics
smd_prognostics_btn_ignore => Ignore
smd_prognostics_check_between => Check files between:
smd_prognostics_check_for => Check files for:
smd_prognostics_check_freq => Check files (at most) every:
smd_prognostics_check_qty => Check this many files each time:
smd_prognostics_check_where => Check files on public side clicks:
smd_prognostics_ch_add => Additions
smd_prognostics_ch_del => Deletions
smd_prognostics_ch_mod => Modifications
smd_prognostics_csense => (case-sensitive)
smd_prognostics_csi_sent => Forensics data sent
smd_prognostics_csv => (comma-separated)
smd_prognostics_currmon => You are currently monitoring {curr} out of {outof} available files.
smd_prognostics_docroot_files => Consider moving the "files" folder outside of your site root folder. You can do this via the "Admin > Preferences > Admin > File directory path" setting.
smd_prognostics_docroot_prognostics => Please change the "Prognostics folder" setting to a directory outside your site root folder.
smd_prognostics_docroot_tmp => Consider moving the "tmp" folder outside of your site root folder. You can do this via the "Admin > Preferences > Admin > Temporary directory path" setting.
smd_prognostics_excludir => Exclude folders:
smd_prognostics_files_updated => File list updated
smd_prognostics_help_link => (<a href="{link}">Help</a>)
smd_prognostics_hms => (hrs:mins:secs)
smd_prognostics_ignores => Ignore files:
smd_prognostics_lbl_added => Added (not monitored)
smd_prognostics_lbl_changed => Changed
smd_prognostics_lbl_hashmod => COMPROMISED
smd_prognostics_lbl_missing => Missing
smd_prognostics_listloc => File locations:
smd_prognostics_mailto => Send e-mail to:
smd_prognostics_mailto_csi => Send forensics to:
smd_prognostics_monfiles_explain => Select all the files you wish to monitor and click Save. Altering this list will automatically acknowledge any outstanding alarms against the selected files.
smd_prognostics_none_selected => No files selected
smd_prognostics_notify_email => E-mail
smd_prognostics_notify_txp => Txp interface
smd_prognostics_notify_via => Notify via:
smd_prognostics_not_writable => {location} is not a directory or is not writable
smd_prognostics_no_alarms => No alarms to acknowledge at present.
smd_prognostics_no_files => No files to list. Check the plugin setup (and Save it).
smd_prognostics_no_log_entries => No log activity around the time of the differences.
smd_prognostics_pnl_ack => Alarms
smd_prognostics_pnl_advice => Advice
smd_prognostics_pnl_files => Files
smd_prognostics_pnl_setup => Setup
smd_prognostics_postamble => Acknowledge alarms
smd_prognostics_preamble_added => These files have been added:
smd_prognostics_preamble_files => File contents follows:
smd_prognostics_preamble_hashdown => WARNING! The checksums file is missing.
smd_prognostics_preamble_hashmod => WARNING! The checksums file has been altered:
smd_prognostics_preamble_miss => These files are missing:
smd_prognostics_preamble_nok => These files differ from their expected content:
smd_prognostics_preamble_sql_inject => Possible SQL injection detected
smd_prognostics_preamble_txplog => Log entries prior to this detection:
smd_prognostics_progloc => Prognostics folder:
smd_prognostics_progpfx => Unique prefix:
smd_prognostics_req_headers => Block request headers:
smd_prognostics_req_not_allowed => REQUEST_METHOD not allowed: {req}
smd_prognostics_rh_del => DELETE
smd_prognostics_rh_put => PUT
smd_prognostics_rh_trace => TRACE
smd_prognostics_rpc_exists => The rpc directory is not being used. Consider removing it.
smd_prognostics_rt_hdr => Header violations
smd_prognostics_rt_sql => SQL injections
smd_prognostics_seconds => (seconds)
smd_prognostics_send_forensics => Send forensics for:
smd_prognostics_sensitivity => Sensitivity threshold:
smd_prognostics_sensitivity_explain => (1=most sensitive)
smd_prognostics_setup_exists => The setup directory still exists. Please delete it.
smd_prognostics_show_grants => Your Txp user can access the MySQL privileges in the DB. Consider accessing the DB using a less privileged user.
smd_prognostics_sql_file_privs => Your MySQL user has FILE privileges. Consider revoking this right unless absolutely necessary.
smd_prognostics_sql_inject => Protect against SQL injection:
smd_prognostics_stat_gid => Group ID:
smd_prognostics_stat_mod => Modified:
smd_prognostics_stat_name => Filename:
smd_prognostics_stat_size => Size:
smd_prognostics_stat_uid => User ID:
smd_prognostics_subject => Prognostics ({site})
smd_prognostics_subject_csi => Prognostics ({site}) forensics
smd_prognostics_tight => You run a pretty tight ship. Stay frosty.
smd_prognostics_ttl_ack => Prognostic alarm acknowledgement
smd_prognostics_ttl_advice => Prognostic advice
smd_prognostics_ttl_fileopts => Filesystem options
smd_prognostics_ttl_files => Prognostic file monitoring
smd_prognostics_ttl_monopts => Monitoring options
smd_prognostics_ttl_plugopts => Plugin options
smd_prognostics_ttl_realopts => Realtime options
smd_prognostics_ttl_setup => Prognostic setup
smd_prognostics_txpdir => Admin-side URL:
smd_prognostics_warn_loc => File locations changed. Update your <a href="index.php?event=smd_prognostics&;step=smd_prognostics_files">list of files</a> now
smd_prognostics_with => with:
smd_prognostics_xss => XSS shield:
smd_prognostics_xss_explain => (may break Textiled comments)
EOT;
if (!defined('txpinterface'))
@include_once('zem_tpl.php');
# --- BEGIN PLUGIN CODE ---
/**
* smd_prognostics
*
* A Textpattern CMS plugin for pro-active diagnostics
* -> Detect changes to the file system
* -> Acknowledge alarms (sent via e-mail or to the admin interface)
*
* @author Stef Dawson
* @link https://stefdawson.com/
* @todo Monitor PHP / MySQL version? (https://forum.textpattern.io/viewtopic.php?pid=260163#p260163)
*/
global $smd_prognostics_event, $smd_prognostics_checksums, $smd_prognostics_sqlprot;
$smd_prognostics_event = 'smd_prognostics';
$smd_prognostics_checksums = rtrim(get_pref('smd_prognostics_dir', txpath, 1), DS) . DS . get_pref('smd_prognostics_prefix', '').'smd_prognostics_checksums.txt';
$hdron = get_pref('smd_prognostics_req_headers', '');
$smd_prognostics_sqlprot = new smd_prog_PhProtector(false);
if (txpinterface === 'admin') {
global $txp_user, $event, $step;
$smd_prognostics_privs = '1,2';
$smd_prognostics_suppress = gps('smd_prognostics_suppress');
$privs = safe_field("privs", "txp_users", "name = '".doSlash($txp_user)."'");
$users = get_pref('smd_prognostics_users', '');
$allow = ($users) ? in_array($txp_user, do_list($users)) : true;
if ($allow) {
add_privs($smd_prognostics_event, $smd_prognostics_privs);
add_privs('plugin_prefs.'.$smd_prognostics_event, $smd_prognostics_privs);
register_tab('extensions', $smd_prognostics_event, gTxt('smd_prognostics'));
register_callback('smd_prognostics_setup', 'plugin_prefs.'.$smd_prognostics_event);
register_callback('smd_prognostics_dispatcher', $smd_prognostics_event);
register_callback('smd_prognostics_inject_css', 'admin_side', 'head_end');
}
if ($hdron) {
register_callback('smd_prognostics_request_headers', 'admin_side', 'head_end');
}
// Admin side callback for checking files
if (!$smd_prognostics_suppress && in_array($privs, do_list($smd_prognostics_privs))) {
register_callback('smd_prognostics', 'admin_side', 'main_content');
}
}
// Public side callbacks
if (strpos(get_pref('smd_prognostics_check_where', ''), 'public') !== false) {
register_callback('smd_prognostics', 'pretext');
}
if ($hdron) {
register_callback('smd_prognostics_request_headers', 'pretext');
}
if (strpos(get_pref('smd_prognostics_sql_inject', 'smd_no'), 'smd_no') === false) {
register_callback('smd_prognostics_sql_inject', 'pretext');
}
// -------------------------------------------------------------
// CSS definitions: hopefully kind to themers.
function smd_prognostics_get_style_rules()
{
$smd_prognostics_styles = array(
'msg' =>
'.smd_prog_warn { margin:0 auto 10px; width:500px; background:#ffc; border:2px dashed red; padding:10px; color:#444; }
.smd_prog_warn a { font-weight:bold; color:#963; }
.smd_prog_warn span { font-weight:bold; }
.smd_prog_warn div { font-weight:bold; padding-bottom:10px; }',
'setup' =>
'.smd_label { text-align:right!important; vertical-align:middle; }
.smd_prog_btns form { display:inline; }
.smd_prognostics_setup h3 { margin:25px 0 0; }',
'advice' =>
'.smd_prog_advice { width:750px; }
#list.smd_prog_advice td { padding:5px; }
.smd_prog_btns { width:140px; }',
);
return $smd_prognostics_styles;
}
// -------------------------------------------------------------
function smd_prognostics_inject_css($evt, $stp)
{
global $smd_prognostics_event, $event, $step;
if ($event == $smd_prognostics_event) {
$smd_prognostics_style = smd_prognostics_get_style_rules();
$styles = array();
switch ($step) {
case 'smd_prognostics_advice':
$styles[] = 'advice';
$styles[] = 'setup';
break;
}
if ($styles) {
echo '<style type="text/css">';
foreach ($styles as $style) {
echo $smd_prognostics_style[$style];
}
echo '</style>';
}
}
return;
}
// ------------------------
function smd_prognostics_dispatcher($evt, $stp)
{
$available_steps = array(
'smd_prognostics_files' => false,
'smd_prognostics_setup' => false,
'smd_prognostics_advice' => false,
'smd_prognostics_ack' => false,
);
if (!$stp or !bouncer($stp, $available_steps)) {
$stp = 'smd_prognostics_setup';
}
$stp();
}
// Stub to call the verification code from the URL
function smd_prognostics($evt, $stp)
{
return smd_do_prognostics();
}
// Verify the file checksums
// $mode = 0: normal / 1: no update (return arrays only) / 2: silent update
function smd_do_prognostics($mode = 0)
{
global $smd_prognostics_event, $smd_prognostics_checksums;
$smd_prognostics_style = smd_prognostics_get_style_rules();
$now = time();
$nok = $miss = $added = $allfiles = $hashdown = $hashmod = array();
$timenow = date('H:i:s', $now);
list($beg, $end) = do_list(get_pref('smd_prognostics_check_between', '|'), '|'); // Default is pipe so we can guarantee two return vals
$tdiff = ($mode == 1 || ( ($timenow > $beg) && ($timenow < $end) && ($now - get_pref('smd_prognostics_lastcheck', 0) > get_pref('smd_prognostics_check_freq', 3600)) ) ) ? true : false;
// Parts shamelessly plagiarised from txp_diag
if ($tdiff) {
$sumhash = get_pref('smd_prognostics_sumhash', NULL, ($mode==1 ? 1 : 0));
$lookat = get_pref('smd_prognostics_check_for', '');
$adds = (strpos($lookat, 'add') !== false);
$dels = (strpos($lookat, 'delete') !== false);
$mods = (strpos($lookat, 'modify') !== false);
if ($cs = @file($smd_prognostics_checksums)) {
$hash = md5(smd_prognostics_prep_file($smd_prognostics_checksums));
if ($hash != $sumhash) {
$hashmod[] = $smd_prognostics_checksums;
} else {
$ctr = 0;
$qty_per = (($qty = get_pref('smd_prognostics_check_qty', '')) == '') ? count($cs) : $qty;
$so_far = get_pref('smd_prognostics_qty_so_far', 0);
$until = $so_far + $qty_per;
foreach ($cs as $c) {
if (preg_match('@^(\S+): \((.*)\)$@', trim($c), $m)) {
list(,$file,$md5) = $m;
if ($dels && !file_exists($file)) {
$miss[] = $file;
} elseif ($mods && $md5 != 'NULL') {
// Check file_exists last as it's the slowest operation; allows PHP to short circuit conditionals faster
if ( ( (($ctr >= $so_far) && ($ctr < $until) || $mode == 1) ) && file_exists($file) ) {
$content = smd_prognostics_prep_file($file);
if ((md5($content) != $md5) && ($file != $smd_prognostics_checksums)) {
$nok[] = $file;
}
}
$ctr++;
}
$allfiles[] = $file;
}
}
// Stash the story so far ready for next time the function is called
if ($mode != 1) {
set_pref('smd_prognostics_qty_so_far', (($until < $ctr) ? $until : 0), 'smd_prognos', PREF_HIDDEN, 'text_input');
}
if ($adds) {
$filelist = smd_prognostics_readfiles();
$added = array_diff($filelist, $allfiles);
}
if ($mode != 1) {
set_pref('smd_prognostics_lastcheck', $now, 'smd_prognos', PREF_HIDDEN, 'text_input');
}
}
} else {
// File doesn't exist
$hashdown[] = $smd_prognostics_checksums;
}
}
// Assemble message
if ($nok || $miss || $added || $hashdown || $hashmod) {
if ($mode == 1) {
return array($nok, $miss, $added, $hashdown, $hashmod);
} else {
$via = get_pref('smd_prognostics_notify_via', '');
$detect = get_pref('smd_prognostics_lastdetect', '');
$lasts = explode(',', get_pref('smd_prognostics_lastact', 0));
$freqs = explode(',', get_pref('smd_prognostics_alarm_freq', 86400));
if (!isset($lasts[1])) {
$lasts[1] = $lasts[0];
}
if (!isset($freqs[1])) {
$freqs[1] = $freqs[0];
}
$lastact_txp = ($mode < 2 && ($now - $lasts[0] > $freqs[0])) ? true : false;
$lastact_mail = ($mode < 2 && ($now - $lasts[1] > $freqs[1])) ? true : false;
$lastmsg = get_pref('smd_prognostics_lastmsg', '');
$subject = gTxt('smd_prognostics_subject', array('{site}' => get_pref('siteurl')));
$msg = join('|', array_merge($hashdown, $hashmod, $nok, $miss, $added));
if (txpinterface === 'admin' && strpos($via, 'txp') !== false) {
if ($lastact_txp || ($lastmsg != md5($msg))) {
$txpdir = get_pref('smd_prognostics_txpdir', hu.smd_prognostics_guess_admin_dir());
$out = '<style type="text/css">'.$smd_prognostics_style['msg'].'</style><div class="smd_prog_warn"><div>'.$subject.'</div>'.
(($hashdown) ? '<p>'.gTxt('smd_prognostics_preamble_hashdown').'</p><ul><li>'.join('</li><li>',$hashdown).'</li></ul>' : '').
(($hashmod) ? '<p>'.gTxt('smd_prognostics_preamble_hashmod').'</p><ul><li>'.join('</li><li>',$hashmod).'</li></ul>' : '').
(($nok) ? '<p>'.gTxt('smd_prognostics_preamble_nok').'</p><ul><li>'.join('</li><li>',$nok).'</li></ul>' : '').
(($miss) ? '<p>'.gTxt('smd_prognostics_preamble_miss').'</p><ul><li>'.join('</li><li>',$miss).'</li></ul>' : '').
(($added) ? '<p>'.gTxt('smd_prognostics_preamble_added').'</p><ul><li>'.join('</li><li>',$added).'</li></ul>' : '').
'<p><a href="'.$txpdir.'/index.php?event='.$smd_prognostics_event.a.'step=smd_prognostics_ack'.a.'smd_prognostics_suppress=1">'.
gTxt('smd_prognostics_postamble').'</a></p></div>';
set_pref('smd_prognostics_lastact', $now.','.$lasts[1], 'smd_prognos', PREF_HIDDEN, 'text_input');
echo $out;
}
}
if (strpos($via, 'email') !== false) {
if ($lastact_mail || ($lastmsg != md5($msg))) {
$to = get_pref('smd_prognostics_mailto', '');
if ($to) {
$hdrs = smd_prognostics_header_info('smd_prognostics');
$body =
(($hashdown) ? n.gTxt('smd_prognostics_preamble_hashdown').n.n.join(n,$hashdown) : '').
(($hashmod) ? n.gTxt('smd_prognostics_preamble_hashmod').n.n.join(n,$hashmod) : '').
(($nok) ? n.gTxt('smd_prognostics_preamble_nok').n.n.join(n,$nok) : '').
(($miss) ? n.n.gTxt('smd_prognostics_preamble_miss').n.n.join(n,$miss) : '').
(($added) ? n.n.gTxt('smd_prognostics_preamble_added').n.n.join(n,$added) : '').
n.n.'<a href="'.$hdrs['txpdir'].'/index.php?event='.$smd_prognostics_event.a.'step=smd_prognostics_ack'.a.'smd_prognostics_suppress=1">'.gTxt('smd_prognostics_postamble').'</a>';
mail($to, $subject, $body, $hdrs['headers']);
}
set_pref('smd_prognostics_lastact', $lasts[0].','.$now, 'smd_prognos', PREF_HIDDEN, 'text_input');
}
}
set_pref('smd_prognostics_lastmsg', md5($msg), 'smd_prognos', PREF_HIDDEN, 'text_input');
if ($lastmsg != md5($msg)) {
if ($detect == '') {
set_pref('smd_prognostics_lastdetect', $now, 'smd_prognos', PREF_HIDDEN, 'text_input');
} else {
$detect = explode(',',$detect);
set_pref('smd_prognostics_lastdetect', $detect[0].','.$now, 'smd_prognos', PREF_HIDDEN, 'text_input');
}
}
}
}
}
// ----------
// Catch unexpected request headers
function smd_prognostics_request_headers($evt, $stp)
{
$block = explode('|', get_pref('smd_prognostics_req_headers', ''));
$hdr = serverSet('REQUEST_METHOD');
if (in_array($hdr, $block)) {
$send = (strpos(get_pref('smd_prognostics_rt_forensics'), 'hdr') !== false);
// Send the forensics off if necessary
$to = get_pref('smd_prognostics_mailto_csi', '');
if ($to && $send) {
$subject = gTxt('smd_prognostics_subject_csi', array('{site}' => get_pref('siteurl')));
$hdrs = smd_prognostics_header_info('smd_frognostics');
$body = n.gTxt('smd_prognostics_req_not_allowed', array('{req}' => $hdr)).n;
foreach ($_SERVER + $_REQUEST + $_ENV as $key => $var) {
$body .= n.$key.': '.$var;
}
mail($to, $subject, $body, $hdrs['headers']);
}
//TODO: offer alternative die mechanisms like SQL attacks?
exit(1);
}
}
// ----------
// SQL injection detection
function smd_prognostics_sql_inject()
{
global $smd_prognostics_sqlprot, $permlink_mode, $DB;
// Determine comment preview step and ignore if so
$is_prevu = false;
$com = psa(array(
'parentid',
'preview',
'backpage',
));
if ($com['preview']) {
$urlparts = explode('/', $com['backpage']);
$num = ($permlink_mode == 'messy') ? 1 : count($urlparts);
$artic = safe_field('id','textpattern', "ID=".doSlash($com['parentid']).(($num > 1) ? " AND url_title='".doSlash($urlparts[$num-1])."'" : ''));
$is_prevu = ($artic) ? true : false;
}
if (!$is_prevu && $smd_prognostics_sqlprot->isMalicious()) {
$opts = do_list(get_pref('smd_prognostics_sql_inject', '|'), '|');
$blok = (strpos($opts[0], 'smd_block') !== false);
$send = (strpos(get_pref('smd_prognostics_rt_forensics'), 'sql') !== false);
$ver = (defined('txp_version')) ? txp_version : get_pref('version', '');
// Send the forensics off if necessary
$to = get_pref('smd_prognostics_mailto_csi', '');
if ($to && $send) {
$subject = gTxt('smd_prognostics_subject_csi', array('{site}' => get_pref('siteurl')));
$hdrs = smd_prognostics_header_info('smd_frognostics');
$body = n.gTxt('smd_prognostics_preamble_sql_inject').n;
$body .= (($ver) ? 'Txp: ' . $ver .n : '') . 'PHP: ' . phpversion() .n. 'MySQL: ' . mysqli_get_server_info($DB->link) .n. ((is_callable('apache_get_version')) ? 'Apache: ' . apache_get_version().n : '');
foreach ($_SERVER + $_REQUEST + $_ENV as $key => $var) {
$body .= n.$key.': '.$var;
}
mail($to, $subject, $body, $hdrs['headers']);
}
if (isset($opts[1]) && !empty($opts[1])) {
$parts = do_list($opts[1], ':');
if ($parts[0] == 'txp_form') {
$msg = parse_form($parts[1]);
} else {
$msg = $opts[1];
}
} else {
$msg = '';
}
if ($blok) {
echo $msg;
exit(1);
} else {
txp_die($msg, $opts[0]);
}
}
}
// -----------------
// Admin-side panels
// -----------------
// ----------
// Alarm acknowledgement
function smd_prognostics_ack($msg = '')
{
global $smd_prognostics_event, $smd_prognostics_checksums, $prefs, $DB;
$method = ps('edit_method');
$submit = ($method == 'acknowledge');
$ignore = ($method == 'ignore');
$csi = ($method == 'csi');
$ack = gps('selected');
$smd_prog_ack = (is_array($ack)) ? $ack : (($ack) ? array($ack) : array());
$out = array();
if ($submit || $ignore) {
if ($cs = @file($smd_prognostics_checksums)) {
foreach ($cs as $c) {
if (preg_match('@^(\S+): \((.*)\)$@', trim($c), $m)) {
list(,$file,$md5) = $m;
if (($key = array_search($file, $smd_prog_ack)) !== false) {
if (file_exists($file)) {
$content = smd_prognostics_prep_file($file);
$out[] = $file.': ('.( ($ignore) ? 'NULL' : md5($content) ).')';
}
// Remove files that already have checksums so we're left with additions
unset($smd_prog_ack[$key]);
} else {
$out[] = trim($c);
}
}
}
// Tack on any new files
foreach ($smd_prog_ack as $file) {
if ( ($file != $smd_prognostics_checksums) && file_exists($file) ) {
$content = smd_prognostics_prep_file($file);
$out[] = $file.': ('.( ($ignore) ? 'NULL' : md5($content) ).')';
}
}
$fh = fopen($smd_prognostics_checksums, "w");
fwrite($fh, join(n, $out));
fclose($fh);
smd_prognostics_self_hash();
$msg = gTxt('smd_prognostics_acked');
}
}
if ($csi && $smd_prog_ack) {
$msg = gTxt('smd_prognostics_csi_sent');
} elseif ($csi) {
$msg = gTxt('smd_prognostics_none_selected');
}
pagetop(gTxt('smd_prognostics_ttl_ack'), $msg);
list($nok, $miss, $added, $hashdown, $hashmod) = smd_do_prognostics(1);
$nok = is_array($nok) ? $nok : array();
$miss = is_array($miss) ? $miss : array();
$added = is_array($added) ? $added : array();
$hashmod = is_array($hashmod) ? $hashmod : array();
$errnum = count(array_merge($nok, $miss, $added, $hashmod));
$forensics = array();
$lform = 'Y-m-d H:i:s';
$med = '';
echo n. '<div class="txp-layout">'.
n. '<div class="txp-layout-4col">'.
n. '<h1 class="txp-heading">'.
n. gTxt('smd_prognostics_ttl_ack').
n. '</h1>'.
n. '</div>'.
n. '<div id="'.$smd_prognostics_event.'_control" class="txp-layout-2col">'.
n. smd_prognostics_button_bar('ack').
n. '</div>'.
n. '<div id="'.$smd_prognostics_event.'_container" class="txp-layout-1col">'.
n. '<form class="smd_prognostics-ack-form" name="longform" method="post" action="?event='.$smd_prognostics_event.a.'step=smd_prognostics_ack'.a.'smd_prognostics_suppress=1">'.
n. '<div class="txp-listtables">'.
n. startTable('', '', 'txp-list');
if ($errnum > 0) {
foreach ($hashmod as $naughty) {
$sel = in_array($naughty, $smd_prog_ack);
echo tr(td(checkbox('selected[]', $naughty, $sel), '', 'multi-edit').tda(gTxt('smd_prognostics_lbl_hashmod')).tda($naughty));
}
foreach ($nok as $naughty) {
$sel = in_array($naughty, $smd_prog_ack);
echo tr(td(checkbox('selected[]', $naughty, $sel), '', 'multi-edit').tda(gTxt('smd_prognostics_lbl_changed')).tda($naughty));
if ($sel) {
$fi = stat($naughty);
$forensics['nok'][] = smd_prognostics_forensic_output($naughty, $fi);
$forensics['files'][$naughty] = chunk_split(base64_encode(file_get_contents($naughty)));
}
}
foreach ($miss as $naughty) {
$sel = in_array($naughty, $smd_prog_ack);
echo tr(td(checkbox('selected[]', $naughty, $sel), '', 'multi-edit').tda(gTxt('smd_prognostics_lbl_missing')).tda($naughty));
if ($sel) {
$forensics['miss'][] = $naughty;
}
}
foreach ($added as $naughty) {
$sel = in_array($naughty, $smd_prog_ack);
echo tr(td(checkbox('selected[]', $naughty, $sel), '', 'multi-edit').tda(gTxt('smd_prognostics_lbl_added')).tda($naughty));
if ($sel) {
$fi = stat($naughty);
$forensics['added'][] = smd_prognostics_forensic_output($naughty, $fi);
$forensics['files'][$naughty] = chunk_split(base64_encode(file_get_contents($naughty)));
}
}
if ($smd_prog_ack && $prefs['logging'] != 'none') {
$detect = explode(',',get_pref('smd_prognostics_lastdetect', time()));
if (!isset($detect[1])) {
$detect[1] = $detect[0];
}
$rs = safe_rows('*', 'txp_log', "time BETWEEN '" . date($lform, ($detect[0] - $prefs['smd_prognostics_check_freq'])) . "' AND '" . date($lform, ($detect[1] + 5)) . "'");
foreach ($rs as $row) {
$forensics['txp_log'][] = join(',',$row);
}
}
$methods = array(
'acknowledge' => array('label' => gTxt('smd_prognostics_btn_ackit')),
'ignore' => array('label' => gTxt('smd_prognostics_btn_ignore')),
'csi' => array('label' => gTxt('smd_prognostics_btn_csi')),
);
$med = multi_edit($methods, $smd_prognostics_event, 'smd_prognostics_ack');
if (get_pref('smd_prognostics_mailto_csi', '') == '') {
unset($methods['csi']);
}
} else {
echo tr(td(gTxt('smd_prognostics_no_alarms')));
set_pref('smd_prognostics_lastdetect', '', 'smd_prognos', PREF_HIDDEN, 'text_input');
}
echo endTable().
'</div>'.
$med.
tInput().
'</form>'.
'</div></div>'.
script_js( <<<EOS
$(document).ready(function() {
$('.smd_prognostics-ack-form').txpMultiEditForm({
'row' : 'tr',
'highlighted' : 'tr'
});
});
EOS
);
if ($csi && $forensics) {
// Send the forensics off.
$to = get_pref('smd_prognostics_mailto_csi', '');
if ($to) {
$subject = gTxt('smd_prognostics_subject_csi', array('{site}' => get_pref('siteurl')));
$hdrs = smd_prognostics_header_info('smd_frognostics');
$body =
n.'Txp: ' . txp_version .n. 'PHP: ' . phpversion() .n. 'MySQL: ' . mysqli_get_server_info($DB->link) .n. ((is_callable('apache_get_version')) ? 'Apache: ' . apache_get_version().n : '').
((isset($forensics['nok'])) ? n.gTxt('smd_prognostics_preamble_nok').n.join(n,$forensics['nok']) : '').
((isset($forensics['miss'])) ? n.n.gTxt('smd_prognostics_preamble_miss').n.join(n,$forensics['miss']) : '').
((isset($forensics['added'])) ? n.n.gTxt('smd_prognostics_preamble_added').n.join(n,$forensics['added']) : '').
((isset($forensics['txp_log'])) ? n.n.gTxt('smd_prognostics_preamble_txplog').n.join(n,$forensics['txp_log']) : n.n.gTxt('smd_prognostics_no_log_entries'));
if (isset($forensics['files'])) {
$body .= n.n.gTxt('smd_prognostics_preamble_files');
foreach ($forensics['files'] as $fn => $content) {
$body .= n.n.$fn.n.n.$content.n;
}
}
mail($to, $subject, $body, $hdrs['headers']);
}
}
}
// ----------
function smd_prognostics_assign_var(&$target, $var)
{
$key = key($var);
if (is_array($var[$key])) {
smd_prognostics_assign_var($target[$key], $var[$key]);
} else {
if ($key == 0) {
$target[] = $var[$key];
} else {
$target[$key] = $var[$key];
}
}
}
// ----------
// File management
function smd_prognostics_files($msg = '')
{
global $smd_prognostics_event, $smd_prognostics_checksums;
$submit = 0;
// Pre-process the incoming 'data' blob back into $_POST variables.
// This bypasses the max_input_vars restriction when dealing with
// humungous arrays of values > 1000 rows.
if ($_SERVER['REQUEST_METHOD'] === 'POST' && !empty($_POST['data'])) {
$vars = explode('&', $_POST['data']);
$data = array();
foreach ($vars as $var) {
parse_str($var, $variable);
smd_prognostics_assign_var($_POST, $variable);
}
$submit = 1;
}
$smd_prognostics_files = gps('smd_prognostics_files');
if (!is_array($smd_prognostics_files)) {
$smd_prognostics_files = array();
}
$adds = (strpos(get_pref('smd_prognostics_check_for'), 'add') !== false);
$filelist = smd_prognostics_readfiles();
$allcount = count($filelist);
if ($submit) {
$outfile = array();
foreach ($smd_prognostics_files as $file) {
$content = smd_prognostics_prep_file($file);
$outfile[] = $file.': ('.md5($content).')';
}
if (is_writable(dirname($smd_prognostics_checksums))) {
$fh = @fopen($smd_prognostics_checksums, "w");
if ($fh) {
fwrite($fh, join(n, $outfile));
if ($adds) {
$additions = array_diff($filelist, $smd_prognostics_files);
$added = array();
foreach ($additions as $addition) {
$added[] = $addition.': (NULL)';
}
fwrite($fh, n.join(n, $added));
}
fclose($fh);
smd_prognostics_self_hash();
smd_do_prognostics(2); // Silently acknowledge all the files
set_pref('smd_prognostics_lastdetect', '', 'smd_prognos', PREF_HIDDEN, 'text_input');
$msg = gTxt('smd_prognostics_files_updated');
} else {
$msg = array(gTxt('smd_prognostics_not_writable', array('{location}' => $smd_prognostics_checksums)), E_WARNING);
}
} else {
$msg = array(gTxt('smd_prognostics_not_writable', array('{location}' => dirname($smd_prognostics_checksums))), E_WARNING);
}
}
pagetop(gTxt('smd_prognostics_ttl_files'), $msg);
$smd_prognostics_files = array();
if ($cs = @file($smd_prognostics_checksums)) {
foreach ($cs as $c) {
if (preg_match('@^(\S+): \((.*)\)$@', trim($c), $m)) {
list(,$file,$md5) = $m;
if ($md5 != 'NULL') {
$smd_prognostics_files[] = $file;
}
}
}
}
$moncount = count($smd_prognostics_files);
if ($filelist) {
$filez = array();
foreach ($filelist as $key => $val) {
$filez[$val] = $filelist[$key];
}
$filesel = smd_prognostics_multisel('smd_prognostics_files', $filez, $smd_prognostics_files);
}
$showfiles = (!empty($filesel));
echo n. '<div class="txp-layout">'.
n. '<div class="txp-layout-2col">'.
n. '<h1 class="txp-heading">'.
n. gTxt('smd_prognostics_ttl_files').
n. '</h1>'.
n. '</div>'.
n. '<div id="'.$smd_prognostics_event.'_control" class="txp-layout-2col">'.
n. smd_prognostics_button_bar('fil').
n. '</div>'.
n. '<div id="'.$smd_prognostics_event.'_container" class="txp-layout-1col">'.
n. '<form class="smd_prognostics-files-form" method="post" action="?event='.$smd_prognostics_event.a.'step=smd_prognostics_files">'.
n. startTable('', '', 'txp-list').
n. tr(tdcs(gTxt('smd_prognostics_currmon', array('{curr}' => $moncount, '{outof}' => $allcount)) .(($showfiles) ? br.br. gTxt('smd_prognostics_monfiles_explain') : ''), 1, 400)).
n. (($showfiles) ? tr(tda($filesel)) : tr(tda(gTxt('smd_prognostics_no_files')))).
n. tr(tda(fInput('hidden', 'smd_prognostics_suppress', 1).fInput('submit', 'submit', gTxt('save'), 'publish'))).
n. endTable().
n. tInput().
n. '</form>'.
n. '</div></div>' . script_js(<<<EOJS
$(function() {
$('.smd_prognostics-files-form').submit(function(event) {
var me = $(this);
var data = me.serialize();
me.find("input, textarea, select, button").remove();
me.append("<input type='hidden' class='data' name='data' />");
me.find("input.data").val(data);
});
});
EOJS
);
}
// ----------
// Setup / prefs
function smd_prognostics_setup($msg = '')
{
global $smd_prognostics_event, $smd_prognostics_checksums, $prefs;
$origloc = get_pref('smd_prognostics_listloc', realpath(txpath.DS.'..'.DS).DS, 1);
$origexc = get_pref('smd_prognostics_excludir', 'images, files, tmp', 1);
$origdir = rtrim(get_pref('smd_prognostics_dir', realpath(txpath), 1), DS);
$origpfx = get_pref('smd_prognostics_prefix', '', 1);
$preflist = array(
'smd_prognostics_check_freq',
'smd_prognostics_check_qty',
'smd_prognostics_alarm_freq',
'smd_prognostics_check_where',
'smd_prognostics_mailto',
'smd_prognostics_mailto_csi',
'smd_prognostics_users',
'smd_prognostics_dir',
'smd_prognostics_prefix',
'smd_prognostics_listloc',
'smd_prognostics_excludir',
'smd_prognostics_ignores',
'smd_prognostics_inject_sensitivity',
'smd_prognostics_xss',
'smd_prognostics_txpdir',
);
$warnloc = '';
$notify = gps('smd_prognostics_notify_via');
$chfor = gps('smd_prognostics_check_for');
$reqs = gps('smd_prognostics_req_headers');
$sqlin = gps('smd_prognostics_sql_inject');
$tween = gps('smd_prognostics_check_between');
$rtfor = gps('smd_prognostics_rt_forensics');
// Only one of these valid status codes is allowed to be thrown
$throw_codes = array(
'smd_no' => gTxt('no'),
'smd_block' => gTxt('smd_prognostics_block'),
'200' => '200 OK',
'301' => '301 Moved Permanently',
'302' => '302 Found',
'307' => '307 Temporary Redirect',
'401' => '401 Unauthorized',
'403' => '403 Forbidden',
'404' => '404 Not Found',
'410' => '410 Gone',
'414' => '414 Request-URI Too Long',
'500' => '500 Internal Server Error',
'501' => '501 Not Implemented',
);
if (!is_array($tween)) {
$tween = array();
}
foreach ($tween as $idx => $val) {
if (empty($val)) {
$tween[$idx] = ($idx==0) ? '00:00' : '23:59';
} else {
$timeparts = do_list($val, ':');
foreach ($timeparts as $num) {
if (!is_numeric($num)) {
$tween[$idx] = ($idx==0) ? '00:00' : '23:59';
break;
}
}
}
}
$smd_prognostics_notify_via = join('|', ((is_array($notify)) ? $notify : array($notify)));
$smd_prognostics_check_for = join('|', ((is_array($chfor)) ? $chfor : array($chfor)));
$smd_prognostics_req_headers = join('|', ((is_array($reqs)) ? $reqs : array($reqs)));
$smd_prognostics_sql_inject = join('|', ((is_array($sqlin)) ? $sqlin : array($sqlin)));
$smd_prognostics_check_between = join('|', ((is_array($tween)) ? $tween : array($tween)));
$smd_prognostics_rt_forensics = join('|', ((is_array($rtfor)) ? $rtfor : array($rtfor)));
// Grab the saved pref values and tack on the array item(s)
extract(doSlash(gpsa(array_merge(array('submit'), $preflist))));
$preflist[] = 'smd_prognostics_notify_via';
$preflist[] = 'smd_prognostics_check_for';
$preflist[] = 'smd_prognostics_req_headers';
$preflist[] = 'smd_prognostics_sql_inject';
$preflist[] = 'smd_prognostics_check_between';
$preflist[] = 'smd_prognostics_rt_forensics';
$smd_prognostics_dir = rtrim($smd_prognostics_dir, DS);
if ($submit) {
if (($smd_prognostics_dir != $origdir) || ($smd_prognostics_prefix != $origpfx)) {
if (is_dir($smd_prognostics_dir) && is_writable($smd_prognostics_dir)) {
// Everything OK so do nothing for now
} else {
// Ignore new dir and reset it to what it was before
$msg = array(gTxt('smd_prognostics_not_writable', array('{location}' => $smd_prognostics_dir)), E_WARNING);
$smd_prognostics_dir = $origdir;
}
// Room for more config files as and when they are required
$filelist[] = $smd_prognostics_checksums;
foreach ($filelist as $file) {
$filename = $smd_prognostics_prefix.ltrim(basename($file), $origpfx);
rename($file, rtrim($smd_prognostics_dir, DS).DS.$filename);
}
}
// Write all the prefs
foreach ($preflist as $prefval) {
set_pref(doSlash($prefval), doSlash($$prefval), 'smd_prognos', PREF_HIDDEN, 'text_input');
}