Adds checks for mcrypt module for RINO2

- check for module on install
- check for module when RINO2 is enabled in admin
- check for module when RINO2 is used in communications

include/items.php

@@ -2000,6 +2000,8 @@ function dfrn_deliver($owner,$contact,$atom, $dissolve = false) {
 
 	$rino = get_config('system','rino_encrypt');
 	$rino = intval($rino);
+	// use RINO1 if mcrypt isn't installed and RINO2 was selected
+	if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
 
 	logger("Local rino version: ". $rino, LOGGER_DEBUG);
 

mod/admin.php

@@ -551,7 +551,12 @@ function update_table($table_name, $fields, $old_url, $new_url) {
 	set_config('system','old_pager', $old_pager);
 	set_config('system','only_tag_search', $only_tag_search);
 
-	set_config('system','rino_encrypt', $rino);
+
+	if ($rino==2 and !function_exists('mcrypt_create_iv')){
+		notice(t("RINO2 needs mcrypt php extension to work."));		
+	} else {	
+		set_config('system','rino_encrypt', $rino);
+	}
 
 	set_config('system','embedly', $embedly);
 

mod/dfrn_notify.php

@@ -137,6 +137,8 @@ function dfrn_notify_post(&$a) {
 
 	$rino = get_config('system','rino_encrypt');
 	$rino = intval($rino);
+	// use RINO1 if mcrypt isn't installed and RINO2 was selected
+	if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
 
 	logger("Local rino version: ". $rino, LOGGER_DEBUG);
 
@@ -307,7 +309,9 @@ function dfrn_notify_content(&$a) {
 
 		$rino = get_config('system','rino_encrypt');
 		$rino = intval($rino);
-
+		// use RINO1 if mcrypt isn't installed and RINO2 was selected
+		if ($rino==2 and !function_exists('mcrypt_create_iv')) $rino=1;
+
 		logger("Local rino version: ". $rino, LOGGER_DEBUG);
 
 		// if requested rino is lower than enabled local rino, lower local rino version

mod/install.php

@@ -392,6 +392,7 @@ function check_funcs(&$checks) {
 	check_add($ck_funcs, t('OpenSSL PHP module'), true, true, "");
 	check_add($ck_funcs, t('mysqli PHP module'), true, true, "");
 	check_add($ck_funcs, t('mb_string PHP module'), true, true, "");
+	check_add($ck_funcs, t('mcrypt PHP module'), true, true, "");
 
 
 	if(function_exists('apache_get_modules')){
@@ -422,7 +423,13 @@ function check_funcs(&$checks) {
 		$ck_funcs[4]['status']= false;
 		$ck_funcs[4]['help']= t('Error: mb_string PHP module required but not installed.');
 	}
+	if(! function_exists('mcrypt_create_iv')){
+		$ck_funcs[5]['status']= false;
+		$ck_funcs[5]['help']= t('Error: mcrypt PHP module required but not installed.');
+	}
 
+
+
 	$checks = array_merge($checks, $ck_funcs);
 
 	/*if((x($_SESSION,'sysmsg')) && is_array($_SESSION['sysmsg']) && count($_SESSION['sysmsg']))