From af4460ff3f18dff763e0a493ac71be37dd814435 Mon Sep 17 00:00:00 2001
From: bmeeks8 <bmeeks8@bellsouth.net>
Date: Mon, 13 Jan 2014 10:51:45 -0500
Subject: Incorporate Ermal's comments -- use conf_mount_rw() only where
 needed.

---
 config/snort/snort.inc                        | 4 ++++
 config/snort/snort_alerts.php                 | 5 -----
 config/snort/snort_blocked.php                | 3 ---
 config/snort/snort_check_for_rule_updates.php | 6 +++++-
 config/snort/snort_define_servers.php         | 5 +++--
 config/snort/snort_download_updates.php       | 2 --
 config/snort/snort_edit_hat_data.php          | 4 ----
 config/snort/snort_interfaces_edit.php        | 2 +-
 config/snort/snort_post_install.php           | 2 --
 config/snort/snort_preprocessors.php          | 4 ----
 config/snort/snort_rules.php                  | 6 ------
 config/snort/snort_rulesets.php               | 2 --
 12 files changed, 13 insertions(+), 32 deletions(-)

diff --git a/config/snort/snort.inc b/config/snort/snort.inc
index 91298838..52aaed2a 100755
--- a/config/snort/snort.inc
+++ b/config/snort/snort.inc
@@ -2520,6 +2520,8 @@ function snort_generate_conf($snortcfg) {
 	if (!is_array($config['installedpackages']['snortglobal']['rule']))
 		return;
 
+	conf_mount_rw();
+
 	/* See if we should protect and not modify the preprocessor rules files */
 	if (!empty($snortcfg['protect_preproc_rules'])) 	
 		$protect_preproc_rules = $snortcfg['protect_preproc_rules'];
@@ -3767,10 +3769,12 @@ EOD;
 	$conf = fopen("{$snortcfgdir}/snort.conf", "w");
 	if(!$conf) {
 		log_error("Could not open {$snortcfgdir}/snort.conf for writing.");
+		conf_mount_ro();
 		return -1;
 	}
 	fwrite($conf, $snort_conf_text);
 	fclose($conf);
+	conf_mount_ro();
 	unset($snort_conf_text, $selected_rules_sections, $suppress_file_name, $snort_misc_include_rules, $spoink_type, $snortunifiedlog_type, $alertsystemlog_type);
 	unset($home_net, $external_net, $ipvardef, $portvardef);
 }
diff --git a/config/snort/snort_alerts.php b/config/snort/snort_alerts.php
index 97174cdd..f232f897 100755
--- a/config/snort/snort_alerts.php
+++ b/config/snort/snort_alerts.php
@@ -216,7 +216,6 @@ if (($_GET['act'] == "addsuppress_srcip" || $_GET['act'] == "addsuppress_dstip")
 }
 
 if ($_GET['action'] == "clear" || $_POST['delete']) {
-	conf_mount_rw();
 	snort_post_delete_logs($snort_uuid);
 	$fd = @fopen("/var/log/snort/snort_{$if_real}{$snort_uuid}/alert", "w+");
 	if ($fd)
@@ -225,13 +224,11 @@ if ($_GET['action'] == "clear" || $_POST['delete']) {
 	mwexec('/bin/chmod 660 /var/log/snort/*', true);
 	if (file_exists("{$g['varrun_path']}/snort_{$if_real}{$snort_uuid}.pid"))
 		mwexec("/bin/pkill -HUP -F {$g['varrun_path']}/snort_{$if_real}{$snort_uuid}.pid -a");
-	conf_mount_ro();
 	header("Location: /snort/snort_alerts.php?instance={$instanceid}");
 	exit;
 }
 
 if ($_POST['download']) {
-	conf_mount_rw();
 	$save_date = exec('/bin/date "+%Y-%m-%d-%H-%M-%S"');
 	$file_name = "snort_logs_{$save_date}_{$if_real}.tar.gz";
 	exec("cd /var/log/snort/snort_{$if_real}{$snort_uuid} && /usr/bin/tar -czf /tmp/{$file_name} *");
@@ -256,8 +253,6 @@ if ($_POST['download']) {
 	}
 	else
 		$savemsg = gettext("An error occurred while creating archive");
-
-	conf_mount_ro();
 }
 
 /* Load up an array with the current Suppression List GID,SID values */
diff --git a/config/snort/snort_blocked.php b/config/snort/snort_blocked.php
index 95109660..8d106a90 100644
--- a/config/snort/snort_blocked.php
+++ b/config/snort/snort_blocked.php
@@ -63,7 +63,6 @@ if ($_POST['remove']) {
 /* TODO: build a file with block ip and disc */
 if ($_POST['download'])
 {
-	conf_mount_rw();
 	$blocked_ips_array_save = "";
 	exec('/sbin/pfctl -t snort2c -T show', $blocked_ips_array_save);
 	/* build the list */
@@ -105,8 +104,6 @@ if ($_POST['download'])
 			$savemsg = gettext("An error occurred while creating archive");
 	} else
 		$savemsg = gettext("No content on snort block list");
-
-	conf_mount_ro();
 }
 
 if ($_POST['save'])
diff --git a/config/snort/snort_check_for_rule_updates.php b/config/snort/snort_check_for_rule_updates.php
index a93aef56..807b7844 100755
--- a/config/snort/snort_check_for_rule_updates.php
+++ b/config/snort/snort_check_for_rule_updates.php
@@ -104,6 +104,9 @@ $snort_filename = "snortrules-snapshot-{$snortver[0]}.tar.gz";
 $snort_filename_md5 = "{$snort_filename}.md5";
 $snort_rule_url = VRT_DNLD_URL;
 
+/* Mount the Snort conf directories R/W so we can modify files there */
+conf_mount_rw();
+
 /* Set up Emerging Threats rules filenames and URL */
 if ($etpro == "on") {
 	$emergingthreats_filename = ETPRO_DNLD_FILENAME;
@@ -364,8 +367,9 @@ function snort_fetch_new_rules($file_url, $file_dst, $file_md5, $desc = "") {
 
 }
 
+/**********************/
 /* Start of main code */
-conf_mount_rw();
+/**********************/
 
 /*  remove old $tmpfname files */
 if (is_dir("{$tmpfname}"))
diff --git a/config/snort/snort_define_servers.php b/config/snort/snort_define_servers.php
index 7b729208..7c057b19 100755
--- a/config/snort/snort_define_servers.php
+++ b/config/snort/snort_define_servers.php
@@ -131,13 +131,14 @@ if ($_POST) {
 
 		$a_nat[$id] = $natent;
 
-		conf_mount_rw();
 		write_config();
 
 		/* Update the snort conf file for this interface. */
 		$rebuild_rules = false;
 		snort_generate_conf($a_nat[$id]);
-		conf_mount_ro();
+
+		/* Soft-restart Snort to live-load new variables. */
+		snort_reload_config($a_nat[$id]);
 
 		/* after click go to this page */
 		header( 'Expires: Sat, 26 Jul 1997 05:00:00 GMT' );
diff --git a/config/snort/snort_download_updates.php b/config/snort/snort_download_updates.php
index fc97ab96..5c9b8210 100755
--- a/config/snort/snort_download_updates.php
+++ b/config/snort/snort_download_updates.php
@@ -87,10 +87,8 @@ if (file_exists("{$snortdir}/{$snort_community_rules_filename}.md5"))
 
 /* Check for postback to see if we should clear the update log file. */
 if (isset($_POST['clear'])) {
-	conf_mount_rw();
 	if (file_exists("{$snort_rules_upd_log}"))
 		mwexec("/bin/rm -f {$snort_rules_upd_log}");
-	conf_mount_ro();
 }
 
 if (isset($_POST['update'])) {
diff --git a/config/snort/snort_edit_hat_data.php b/config/snort/snort_edit_hat_data.php
index 9189c936..f6d00b0b 100644
--- a/config/snort/snort_edit_hat_data.php
+++ b/config/snort/snort_edit_hat_data.php
@@ -61,23 +61,19 @@ else
 	$pconfig['host_attribute_data'] = "";
 
 if ($_POST['clear']) {
-	conf_mount_rw();
 	unset($a_nat[$id]['host_attribute_data']);
 	write_config();
 	$rebuild_rules = false;
 	snort_generate_conf($a_nat[$id]);
-	conf_mount_ro();
 	header("Location: /snort/snort_edit_hat_data.php?id={$id}");
 	exit;
 }
 
 if ($_POST['host_attribute_data']) {
-	conf_mount_rw();
 	$a_nat[$id]['host_attribute_data'] = base64_encode($_POST['host_attribute_data']);
 	write_config();
 	$rebuild_rules = false;
 	snort_generate_conf($a_nat[$id]);
-	conf_mount_ro();
 	header("Location: /snort/snort_preprocessors.php?id={$id}");
 	exit;
 }
diff --git a/config/snort/snort_interfaces_edit.php b/config/snort/snort_interfaces_edit.php
index 0a99e60a..72aa82e2 100755
--- a/config/snort/snort_interfaces_edit.php
+++ b/config/snort/snort_interfaces_edit.php
@@ -150,8 +150,8 @@ if ($_POST["Submit"]) {
 			if ($natent['interface'] != $a_rule[$id]['interface']) {
 				$oif_real = snort_get_real_interface($a_rule[$id]['interface']);
 				snort_stop($a_rule[$id], $oif_real);
-				conf_mount_rw();
 				exec("rm -r /var/log/snort_{$oif_real}" . $a_rule[$id]['uuid']);
+				conf_mount_rw();
 				exec("mv -f {$snortdir}/snort_" . $a_rule[$id]['uuid'] . "_{$oif_real} {$snortdir}/snort_" . $a_rule[$id]['uuid'] . "_{$if_real}");
 				conf_mount_ro();
 			}
diff --git a/config/snort/snort_post_install.php b/config/snort/snort_post_install.php
index f79737a2..003628be 100644
--- a/config/snort/snort_post_install.php
+++ b/config/snort/snort_post_install.php
@@ -1354,7 +1354,6 @@ EOD;
 /*****************************************************************************/
 /* This starts the actual post-install code                                  */
 /*****************************************************************************/
-conf_mount_rw();
 
 /* Hard kill any running Snort processes that may have been started by any   */
 /* of the pfSense scripts such as check_reload_status() or rc.start_packages */
@@ -1455,7 +1454,6 @@ if ($config['installedpackages']['snortglobal']['forcekeepsettings'] == 'on') {
 /* Update Snort package version in configuration */
 $config['installedpackages']['snortglobal']['snort_config_ver'] = "3.0.2";
 write_config();
-conf_mount_ro();
 
 /* Done with post-install, so clear flag */
 unset($g['snort_postinstall']);
diff --git a/config/snort/snort_preprocessors.php b/config/snort/snort_preprocessors.php
index d1b3e5be..26b37e81 100755
--- a/config/snort/snort_preprocessors.php
+++ b/config/snort/snort_preprocessors.php
@@ -514,8 +514,6 @@ elseif ($_POST['Submit']) {
 			write_config();
 		}
 
-		conf_mount_rw();
-
 		/*************************************************/
 		/* Update the snort.conf file and rebuild the    */
 		/* rules for this interface.                     */
@@ -528,8 +526,6 @@ elseif ($_POST['Submit']) {
 		if ($natent['preproc_auto_rule_disable'] == 'off')
 			@unlink("{$disabled_rules_log}");
 
-		conf_mount_ro();
-
 		/*******************************************************/
 		/* Signal Snort to reload Host Attribute Table if one  */
 		/* is configured and saved.                            */
diff --git a/config/snort/snort_rules.php b/config/snort/snort_rules.php
index 37b06914..a82d81d2 100755
--- a/config/snort/snort_rules.php
+++ b/config/snort/snort_rules.php
@@ -319,25 +319,21 @@ if ($_GET['act'] == "resetall" && !empty($rules_map)) {
 }
 
 if ($_POST['clear']) {
-	conf_mount_rw();
 	unset($a_rule[$id]['customrules']);
 	write_config();
 	$rebuild_rules = true;
 	snort_generate_conf($a_rule[$id]);
 	$rebuild_rules = false;
-	conf_mount_ro();
 	header("Location: /snort/snort_rules.php?id={$id}&openruleset={$currentruleset}");
 	exit;
 }
 
 if ($_POST['customrules']) {
-	conf_mount_rw();
 	$a_rule[$id]['customrules'] = base64_encode($_POST['customrules']);
 	write_config();
 	$rebuild_rules = true;
 	snort_generate_conf($a_rule[$id]);
 	$rebuild_rules = false;
-	conf_mount_ro();
 	$output = "";
 	$retcode = "";
 	exec("/usr/local/bin/snort -T -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/snort.conf 2>&1", $output, $retcode);
@@ -356,7 +352,6 @@ if ($_POST['customrules']) {
 }
 
 else if ($_POST['apply']) {
-	conf_mount_rw();
 	/* Save new configuration */
 	write_config();
 
@@ -367,7 +362,6 @@ else if ($_POST['apply']) {
 	$rebuild_rules = true;
 	snort_generate_conf($a_rule[$id]);
 	$rebuild_rules = false;
-	conf_mount_ro();
 
 	/* Soft-restart Snort to live-load new rules */
 	snort_reload_config($a_rule[$id]);
diff --git a/config/snort/snort_rulesets.php b/config/snort/snort_rulesets.php
index dc37cb10..9c14392d 100755
--- a/config/snort/snort_rulesets.php
+++ b/config/snort/snort_rulesets.php
@@ -145,7 +145,6 @@ if ($_POST["Submit"]) {
 			@unlink("{$snortdir}/snort_{$snort_uuid}_{$if_real}/rules/{$flowbit_rules_file}");
 	}
 
-	conf_mount_rw();
 	write_config();
 
 	/*************************************************/
@@ -155,7 +154,6 @@ if ($_POST["Submit"]) {
 	$rebuild_rules = true;
 	snort_generate_conf($a_nat[$id]);
 	$rebuild_rules = false;
-	conf_mount_ro();
 
 	/* Soft-restart Snort to live-load new rules */
 	snort_reload_config($a_nat[$id]);
-- 
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