From: Vsevolod Stakhov <vsevolod@highsecure.ru>
Date: Tue, 1 Dec 2015 18:17:55 +0000 (+0000)
Subject: Add routines to get count of captures and backrefs
X-Git-Tag: 1.1.0~436
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0e26d4843d7f993547e3d0acf5b91c5bb29ee743;p=thirdparty%2Frspamd.git

Add routines to get count of captures and backrefs
---

diff --git a/src/libutil/regexp.c b/src/libutil/regexp.c
index 5ebcf7db8d..2bf21ca1e6 100644
--- a/src/libutil/regexp.c
+++ b/src/libutil/regexp.c
@@ -53,6 +53,7 @@ struct rspamd_regexp_s {
 	gpointer ud;
 	gint flags;
 	gint ncaptures;
+	gint nbackref;
 };
 
 struct rspamd_regexp_cache {
@@ -340,6 +341,12 @@ fin:
 		res->ncaptures = ncaptures;
 	}
 
+	/* Check number of backrefs */
+	if (pcre_fullinfo (res->raw_re, res->extra, PCRE_INFO_BACKREFMAX,
+			&ncaptures) == 0) {
+		res->nbackref = ncaptures;
+	}
+
 	return res;
 }
 
@@ -476,6 +483,22 @@ rspamd_regexp_get_pattern (rspamd_regexp_t *re)
 	return re->pattern;
 }
 
+gint
+rspamd_regexp_get_nbackrefs (rspamd_regexp_t *re)
+{
+	g_assert (re != NULL);
+
+	return re->nbackref;
+}
+
+gint
+rspamd_regexp_get_ncaptures (rspamd_regexp_t *re)
+{
+	g_assert (re != NULL);
+
+	return re->ncaptures;
+}
+
 gboolean
 rspamd_regexp_match (rspamd_regexp_t *re, const gchar *text, gsize len,
 		gboolean raw)
diff --git a/src/libutil/regexp.h b/src/libutil/regexp.h
index 1301e5dd90..2c33f780dd 100644
--- a/src/libutil/regexp.h
+++ b/src/libutil/regexp.h
@@ -110,6 +110,16 @@ gpointer rspamd_regexp_get_id (rspamd_regexp_t *re);
  */
 const char* rspamd_regexp_get_pattern (rspamd_regexp_t *re);
 
+/**
+ * Returns number of backreferences in a regexp
+ */
+gint rspamd_regexp_get_nbackrefs (rspamd_regexp_t *re);
+
+/**
+ * Returns number of capture groups in a regexp
+ */
+gint rspamd_regexp_get_ncaptures (rspamd_regexp_t *re);
+
 /**
  * Create new regexp cache
  * @return