Allow to disable hyperscan and use pcre only

src/libserver/cfg_file.h

@@ -231,6 +231,7 @@ struct rspamd_config {
 	gboolean strict_protocol_headers;               /**< strictly check protocol headers					*/
 	gboolean check_all_filters;                     /**< check all filters									*/
 	gboolean allow_raw_input;                       /**< scan messages with invalid mime					*/
+	gboolean disable_hyperscan;                     /**< disable hyperscan usage							*/
 
 	gsize max_diff;                                 /**< maximum diff size for text parts					*/
 

src/libserver/cfg_rcl.c

@@ -1465,6 +1465,11 @@ rspamd_rcl_config_init (void)
 			rspamd_rcl_parse_struct_integer,
 			G_STRUCT_OFFSET (struct rspamd_config, history_rows),
 			RSPAMD_CL_FLAG_UINT);
+	rspamd_rcl_add_default_handler (sub,
+			"disable_hyperscan",
+			rspamd_rcl_parse_struct_boolean,
+			G_STRUCT_OFFSET (struct rspamd_config, disable_hyperscan),
+			0);
 
 	/* New DNS configuration */
 	ssub = rspamd_rcl_add_section (&sub->subsections, "dns", NULL, NULL,

src/libserver/cfg_utils.c

@@ -671,7 +671,7 @@ rspamd_config_post_load (struct rspamd_config *cfg, gboolean validate_cache)
 	rspamd_symbols_cache_init (cfg->cache);
 
 	/* Init re cache */
-	rspamd_re_cache_init (cfg->re_cache);
+	rspamd_re_cache_init (cfg->re_cache, cfg);
 
 	/* Validate cache */
 	if (validate_cache) {

src/libserver/re_cache.c

@@ -29,6 +29,7 @@
 #include "ref.h"
 #include "libserver/url.h"
 #include "libserver/task.h"
+#include "libserver/cfg_file.h"
 #include "libutil/util.h"
 #ifdef WITH_HYPERSCAN
 #include "hs.h"
@@ -99,6 +100,7 @@ struct rspamd_re_cache {
 	guint max_re_data;
 	gchar hash[rspamd_cryptobox_HASHBYTES + 1];
 #ifdef WITH_HYPERSCAN
+	gboolean disable_hyperscan;
 	hs_platform_info_t plt;
 #endif
 };
@@ -286,7 +288,7 @@ rspamd_re_cache_sort_func (gconstpointer a, gconstpointer b)
 }
 
 void
-rspamd_re_cache_init (struct rspamd_re_cache *cache)
+rspamd_re_cache_init (struct rspamd_re_cache *cache, struct rspamd_config *cfg)
 {
 	guint i, fl;
 	GHashTableIter it;
@@ -364,6 +366,8 @@ rspamd_re_cache_init (struct rspamd_re_cache *cache)
 	const gchar *platform = "generic";
 	rspamd_fstring_t *features = rspamd_fstring_new ();
 
+	cache->disable_hyperscan = cfg->disable_hyperscan;
+
 	g_assert (hs_populate_platform (&cache->plt) == HS_SUCCESS);
 
 	/* Now decode what we do have */
@@ -541,7 +545,7 @@ rspamd_re_cache_process_regexp_data (struct rspamd_re_runtime *rt,
 #else
 	struct rspamd_re_hyperscan_cbdata cbdata;
 
-	if (elt->match_type == RSPAMD_RE_CACHE_PCRE) {
+	if (rt->cache->disable_hyperscan || elt->match_type == RSPAMD_RE_CACHE_PCRE) {
 		ret = rspamd_re_cache_process_pcre (rt, re, in, len, is_raw);
 		setbit (rt->checked, re_id);
 		rt->results[re_id] = ret;
@@ -751,7 +755,9 @@ rspamd_re_cache_exec_re (struct rspamd_task *task,
 		break;
 	}
 
-	rspamd_re_cache_finish_class (rt, re_class);
+	if (!rt->cache->disable_hyperscan) {
+		rspamd_re_cache_finish_class (rt, re_class);
+	}
 
 	return ret;
 }

src/libserver/re_cache.h

@@ -30,6 +30,7 @@
 struct rspamd_re_cache;
 struct rspamd_re_runtime;
 struct rspamd_task;
+struct rspamd_config;
 
 enum rspamd_re_type {
 	RSPAMD_RE_HEADER,
@@ -78,7 +79,8 @@ void rspamd_re_cache_replace (struct rspamd_re_cache *cache,
 /**
  * Initialize and optimize re cache structure
  */
-void rspamd_re_cache_init (struct rspamd_re_cache *cache);
+void rspamd_re_cache_init (struct rspamd_re_cache *cache,
+		struct rspamd_config *cfg);
 
 /**
  * Get runtime data for a cache