From 0dca31d70718c5bbefc5013052f94115084fc548 Mon Sep 17 00:00:00 2001
From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Wed, 16 Mar 2016 17:50:14 +0000
Subject: [PATCH] [Feature] Add method to check regexp maps

---
 src/libutil/map.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++
 src/libutil/map.h | 11 ++++++++++
 2 files changed, 66 insertions(+)

diff --git a/src/libutil/map.c b/src/libutil/map.c
index b1ebc1e4c..ffb426ea0 100644
--- a/src/libutil/map.c
+++ b/src/libutil/map.c
@@ -1646,3 +1646,58 @@ rspamd_regexp_list_fin (rspamd_mempool_t *pool, struct map_cb_data *data)
 				re_map->regexps->len);
 	}
 }
+
+static int
+rspamd_match_hs_single_handler (unsigned int id, unsigned long long from,
+		unsigned long long to,
+		unsigned int flags, void *context)
+{
+	guint *i = context;
+	/* Always return non-zero as we need a single match here */
+
+	*i = id;
+
+	return 1;
+}
+
+gpointer
+rspamd_match_regexp_map (struct rspamd_regexp_map *map,
+		const gchar *in, gsize len)
+{
+	guint i;
+	rspamd_regexp_t *re;
+	gint res = 0;
+	gpointer ret = NULL;
+
+	g_assert (in != NULL && len > 0);
+
+	if (map == NULL) {
+		return NULL;
+	}
+
+#ifdef WITH_HYPERSCAN
+	if (map->hs_db && map->hs_scratch) {
+		res = hs_scan (map->hs_db, in, len, 0, map->hs_scratch,
+				rspamd_match_hs_single_handler, (void *)&i);
+
+		if (res == HS_SCAN_TERMINATED) {
+			res = 1;
+			ret = g_ptr_array_index (map->values, i);
+		}
+	}
+#endif
+
+	if (!res) {
+		/* PCRE version */
+		for (i = 0; i < map->regexps->len; i ++) {
+			re = g_ptr_array_index (map->regexps, i);
+
+			if (rspamd_regexp_search (re, in, len, NULL, NULL, FALSE, NULL)) {
+				ret = g_ptr_array_index (map->values, i);
+				break;
+			}
+		}
+	}
+
+	return ret;
+}
diff --git a/src/libutil/map.h b/src/libutil/map.h
index c37e9024c..f7cbc3076 100644
--- a/src/libutil/map.h
+++ b/src/libutil/map.h
@@ -128,4 +128,15 @@ rspamd_parse_kv_list (rspamd_mempool_t * pool,
 	const gchar *default_value,
 	gboolean final);
 
+/**
+ * Find a single (any) matching regexp for the specified text or NULL if
+ * no matches found
+ * @param map
+ * @param in
+ * @param len
+ * @return
+ */
+gpointer rspamd_match_regexp_map (struct rspamd_regexp_map *map,
+		const gchar *in, gsize len);
+
 #endif
-- 
2.39.5