Add parsing of multiple upstreams string.

src/libutil/upstream.c

@@ -329,6 +329,33 @@ rspamd_upstreams_add_upstream (struct upstream_list *ups,
 	return TRUE;
 }
 
+gboolean
+rspamd_upstreams_parse_line (struct upstream_list *ups,
+		const gchar *str, guint16 def_port, void *data)
+{
+	const gchar *end = str + strlen (str), *p = str;
+	const gchar *separators = ";, \n\r\t";
+	gchar *tmp;
+	guint len;
+	gboolean ret = FALSE;
+
+	while (p < end) {
+		len = strcspn (p, separators);
+		if (len > 0) {
+			tmp = g_malloc (len + 1);
+			rspamd_strlcpy (tmp, p, len + 1);
+			if (rspamd_upstreams_add_upstream (ups, tmp, def_port, data)) {
+				ret = TRUE;
+			}
+		}
+		p += len + 1;
+		/* Skip separators */
+		p += strspn (p, separators) + 1;
+	}
+
+	return ret;
+}
+
 void
 rspamd_upstreams_destroy (struct upstream_list *ups)
 {

src/libutil/upstream.h

@@ -51,10 +51,11 @@ struct upstream_list* rspamd_upstreams_create (void);
  * @param ups
  */
 void rspamd_upstreams_destroy (struct upstream_list *ups);
+
 /**
  * Add upstream from the string
  * @param ups upstream list
- * @param str string in format "name[:port[:priority]]
+ * @param str string in format "name[:port[:priority]]"
  * @param def_port default port number
  * @param data optional userdata
  * @return TRUE if upstream has been added
@@ -62,6 +63,17 @@ void rspamd_upstreams_destroy (struct upstream_list *ups);
 gboolean rspamd_upstreams_add_upstream (struct upstream_list *ups,
 		const gchar *str, guint16 def_port, void *data);
 
+/**
+ * Add multiple upstreams from comma, semicolon or space separated line
+ * @param ups upstream list
+ * @param str string in format "(<ups>([<sep>+]<ups>)*)+"
+ * @param def_port default port number
+ * @param data optional userdata
+ * @return TRUE if **any** of upstreams has been added
+ */
+gboolean rspamd_upstreams_parse_line (struct upstream_list *ups,
+		const gchar *str, guint16 def_port, void *data);
+
 /**
  * Returns the current IP address of the upstream
  * @param up