[Fix] Fix memory leak on reload in plugins

src/plugins/chartable.c

@@ -78,10 +78,12 @@ static void chartable_url_symbol_callback (struct rspamd_task *task, void *unuse
 gint
 chartable_module_init (struct rspamd_config *cfg, struct module_ctx **ctx)
 {
-	chartable_module_ctx = g_malloc (sizeof (struct chartable_ctx));
+	if (chartable_module_ctx == NULL) {
+		chartable_module_ctx = g_malloc (sizeof (struct chartable_ctx));
 
-	chartable_module_ctx->chartable_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
-	chartable_module_ctx->max_word_len = 10;
+		chartable_module_ctx->chartable_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
+		chartable_module_ctx->max_word_len = 10;
+	}
 
 	*ctx = (struct module_ctx *)chartable_module_ctx;
 

src/plugins/dkim_check.c

@@ -115,16 +115,18 @@ dkim_module_key_dtor (gpointer k)
 gint
 dkim_module_init (struct rspamd_config *cfg, struct module_ctx **ctx)
 {
-	dkim_module_ctx = g_malloc0 (sizeof (struct dkim_ctx));
-
-	dkim_module_ctx->dkim_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), "dkim");
-	dkim_module_ctx->sign_headers = "from:sender:reply-to:subject:date:message-id:"
-			"to:cc:mime-version:content-type:content-transfer-encoding:"
-			"resent-to:resent-cc:resent-from:resent-sender:resent-message-id:"
-			"in-reply-to:references:list-id:list-owner:list-unsubscribe:"
-			"list-subscribe:list-post";
-	dkim_module_ctx->sign_condition_ref = -1;
-	dkim_module_ctx->max_sigs = DEFAULT_MAX_SIGS;
+	if (dkim_module_ctx == NULL) {
+		dkim_module_ctx = g_malloc0 (sizeof (struct dkim_ctx));
+
+		dkim_module_ctx->dkim_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), "dkim");
+		dkim_module_ctx->sign_headers = "from:sender:reply-to:subject:date:message-id:"
+				"to:cc:mime-version:content-type:content-transfer-encoding:"
+				"resent-to:resent-cc:resent-from:resent-sender:resent-message-id:"
+				"in-reply-to:references:list-id:list-owner:list-unsubscribe:"
+				"list-subscribe:list-post";
+		dkim_module_ctx->sign_condition_ref = -1;
+		dkim_module_ctx->max_sigs = DEFAULT_MAX_SIGS;
+	}
 
 	*ctx = (struct module_ctx *)dkim_module_ctx;
 

src/plugins/fuzzy_check.c

@@ -637,13 +637,16 @@ fuzzy_check_module_init (struct rspamd_config *cfg, struct module_ctx **ctx)
 {
 	lua_State *L = cfg->lua_state;
 
-	fuzzy_module_ctx = g_malloc0 (sizeof (struct fuzzy_ctx));
+	if (fuzzy_module_ctx == NULL) {
+		fuzzy_module_ctx = g_malloc0 (sizeof (struct fuzzy_ctx));
+
+		fuzzy_module_ctx->fuzzy_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
+		/* TODO: this should match rules count actually */
+		fuzzy_module_ctx->keypairs_cache = rspamd_keypair_cache_new (32);
+		fuzzy_module_ctx->fuzzy_rules = g_ptr_array_new ();
+	}
 
-	fuzzy_module_ctx->fuzzy_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
 	fuzzy_module_ctx->cfg = cfg;
-	/* TODO: this should match rules count actually */
-	fuzzy_module_ctx->keypairs_cache = rspamd_keypair_cache_new (32);
-	fuzzy_module_ctx->fuzzy_rules = g_ptr_array_new ();
 
 	*ctx = (struct module_ctx *)fuzzy_module_ctx;
 
@@ -1043,10 +1046,12 @@ fuzzy_check_module_reconfig (struct rspamd_config *cfg)
 	saved_ctx = fuzzy_module_ctx->ctx;
 	rspamd_mempool_delete (fuzzy_module_ctx->fuzzy_pool);
 	rspamd_keypair_cache_destroy (fuzzy_module_ctx->keypairs_cache);
+	g_ptr_array_free (fuzzy_module_ctx->fuzzy_rules, TRUE);
 	memset (fuzzy_module_ctx, 0, sizeof (*fuzzy_module_ctx));
 	fuzzy_module_ctx->ctx = saved_ctx;
 	fuzzy_module_ctx->fuzzy_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
 	fuzzy_module_ctx->cfg = cfg;
+	fuzzy_module_ctx->fuzzy_rules = g_ptr_array_new ();
 	fuzzy_module_ctx->keypairs_cache = rspamd_keypair_cache_new (32);
 
 	return fuzzy_check_module_config (cfg);

src/plugins/regexp.c

@@ -91,9 +91,10 @@ read_regexp_expression (rspamd_mempool_t * pool,
 gint
 regexp_module_init (struct rspamd_config *cfg, struct module_ctx **ctx)
 {
-	regexp_module_ctx = g_malloc (sizeof (struct regexp_ctx));
-
-	regexp_module_ctx->regexp_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
+	if (regexp_module_ctx == NULL) {
+		regexp_module_ctx = g_malloc (sizeof (struct regexp_ctx));
+		regexp_module_ctx->regexp_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
+	}
 
 	*ctx = (struct module_ctx *)regexp_module_ctx;
 

src/plugins/spf.c

@@ -83,9 +83,11 @@ module_t spf_module = {
 gint
 spf_module_init (struct rspamd_config *cfg, struct module_ctx **ctx)
 {
-	spf_module_ctx = g_malloc (sizeof (struct spf_ctx));
+	if (spf_module_ctx == NULL) {
+		spf_module_ctx = g_malloc (sizeof (struct spf_ctx));
 
-	spf_module_ctx->spf_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
+		spf_module_ctx->spf_pool = rspamd_mempool_new (rspamd_mempool_suggest_size (), NULL);
+	}
 
 	*ctx = (struct module_ctx *)spf_module_ctx;