1 files changed, 68 insertions, 0 deletions
diff --git a/src/lib/protocols/vhua.c b/src/lib/protocols/vhua.c
new file mode 100644
index 000000000..027cc697c
--- /dev/null
+++ b/src/lib/protocols/vhua.c
@@ -0,0 +1,68 @@
+/*
+ * vhua.c
+ *
+ * Copyright (C) 2011-15 - ntop.org
+ *
+ * nDPI is free software: you can vhuatribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nDPI is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+#include "ndpi_api.h"
+
+/*
+  http://www.vhua.com 
+
+  Skype-like Chinese phone protocol
+
+ */
+
+#ifdef NDPI_PROTOCOL_VHUA
+
+static void ndpi_int_vhua_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
+  ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_VHUA, NDPI_REAL_PROTOCOL);
+  NDPI_LOG(NDPI_PROTOCOL_VHUA, ndpi_struct, NDPI_LOG_TRACE, "VHUA Found.\n");
+}
+
+
+static void ndpi_check_vhua(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
+  struct ndpi_packet_struct *packet = &flow->packet;
+  u_int32_t payload_len = packet->payload_packet_len;
+  u_char p0[] =  { 0x05, 0x14, 0x3a, 0x05, 0x08, 0xf8, 0xa1, 0xb1, 0x03 };
+
+  if(payload_len == 0) return; /* Shouldn't happen */
+
+  /* Break after 3 packets. */
+  if((flow->packet_counter > 3)
+     || (packet->udp == NULL)
+     || (packet->payload_packet_len < sizeof(p0))) {
+    NDPI_LOG(NDPI_PROTOCOL_VHUA, ndpi_struct, NDPI_LOG_TRACE, "Exclude VHUA.\n");
+    NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_VHUA);
+  } else if(memcmp(packet->payload, p0, sizeof(p0)) == 0) {
+    ndpi_int_vhua_add_connection(ndpi_struct, flow);
+  }
+}
+
+void ndpi_search_vhua(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
+  struct ndpi_packet_struct *packet = &flow->packet;
+
+  NDPI_LOG(NDPI_PROTOCOL_VHUA, ndpi_struct, NDPI_LOG_TRACE, "VHUA detection...\n");
+
+  /* skip marked packets */
+  if(packet->detected_protocol_stack[0] != NDPI_PROTOCOL_VHUA) {
+    ndpi_check_vhua(ndpi_struct, flow);
+  }
+}
+
+#endif