Added HAProxy protocol. (#2088)

* fixed tests/do.sh.in failure print

Signed-off-by: lns <matzeton@googlemail.com>
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/src/lib/protocols/haproxy.c b/src/lib/protocols/haproxy.c
new file mode 100644
index 000000000..8354df9db
--- /dev/null
+++ b/src/lib/protocols/haproxy.c
@@ -0,0 +1,78 @@
+/*
+ * haproxy.c
+ *
+ * Copyright (C) 2023 - ntop.org
+ *
+ * nDPI is free software: you can zmqtribute 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_protocol_ids.h"
+
+#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_HAPROXY
+
+#include "ndpi_api.h"
+
+static void ndpi_int_haproxy_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_HAPROXY, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
+}
+
+static void ndpi_search_haproxy(struct ndpi_detection_module_struct *ndpi_struct,
+                                struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &ndpi_struct->packet;
+  const uint8_t *haproxy_end;
+
+  NDPI_LOG_DBG(ndpi_struct, "search HAProxy\n");
+
+  if (packet->payload_packet_len < NDPI_STATICSTRING_LEN("PROXY TCP"))
+  {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  if (strncmp((char *)packet->payload, "PROXY TCP", NDPI_STATICSTRING_LEN("PROXY TCP")) != 0)
+  {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  /* The following code may be also used in the future to call subprotocol dissectors e.g. TLS. */
+  haproxy_end = (uint8_t *)ndpi_strnstr((char *)packet->payload, "\r\n", packet->payload_packet_len);
+  if (haproxy_end == NULL)
+  {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+  haproxy_end += 2;
+  if (packet->payload_packet_len - (haproxy_end - packet->payload) == 0)
+  {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  ndpi_int_haproxy_add_connection(ndpi_struct, flow);
+}
+
+void init_haproxy_dissector(struct ndpi_detection_module_struct *ndpi_struct,
+                            u_int32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("HAProxy", ndpi_struct, *id,
+                                      NDPI_PROTOCOL_HAPROXY,
+                                      ndpi_search_haproxy,
+                                      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
+                                      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+                                      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}