Add Apache Thrift protocol dissector.add/apache-thrift

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

6 files changed, 286 insertions, 0 deletions

diff --git a/src/include/ndpi_protocol_ids.h b/src/include/ndpi_protocol_ids.h
index 70f281c36..7f9bb7c50 100644
--- a/src/include/ndpi_protocol_ids.h
+++ b/src/include/ndpi_protocol_ids.h
@@ -373,6 +373,7 @@ typedef enum {
   NDPI_PROTOCOL_NVIDIA                = 342,
   NDPI_PROTOCOL_BITCOIN               = 343, 
   NDPI_PROTOCOL_PROTONVPN             = 344,
+  NDPI_PROTOCOL_APACHE_THRIFT         = 345,
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_protocol_ids.h"
diff --git a/src/include/ndpi_protocols.h b/src/include/ndpi_protocols.h
index 9bcb5ada9..8bc687349 100644
--- a/src/include/ndpi_protocols.h
+++ b/src/include/ndpi_protocols.h
@@ -243,6 +243,7 @@ void init_bacnet_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_i
 void init_oicq_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_epicgames_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_bitcoin_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
+void init_apache_thrift_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 
 /* ndpi_main.c */
 extern u_int32_t ndpi_ip_port_hash_funct(u_int32_t ip, u_int16_t port);
diff --git a/src/include/ndpi_typedefs.h b/src/include/ndpi_typedefs.h
index 80dd05c9a..540761c67 100644
--- a/src/include/ndpi_typedefs.h
+++ b/src/include/ndpi_typedefs.h
@@ -1596,6 +1596,11 @@ struct ndpi_flow_struct {
       u_int16_t external_port;
       ndpi_ip_addr_t external_address;
     } natpmp;
+
+    struct {
+      u_int8_t message_type;
+      char method[64];
+    } thrift;
   } protos;
 
   /*** ALL protocol specific 64 bit variables here ***/
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 80b9f6d42..7f88d8b1c 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -1108,6 +1108,7 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
 			      NDPI_PROTOCOL_IPP,
 			      NDPI_PROTOCOL_MPEGDASH,
 			      NDPI_PROTOCOL_RTSP,
+			      NDPI_PROTOCOL_APACHE_THRIFT,
 			      NDPI_PROTOCOL_MATCHED_BY_CONTENT,
 			      NDPI_PROTOCOL_NO_MORE_SUBPROTOCOLS); /* NDPI_PROTOCOL_HTTP can have (content-matched) subprotocols */
   ndpi_set_proto_defaults(ndpi_str, 1 /* cleartext */, 0 /* nw proto */, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_MDNS,
@@ -2097,6 +2098,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
 			  "ProtonVPN", NDPI_PROTOCOL_CATEGORY_VPN,
 			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
 			  ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
+  ndpi_set_proto_defaults(ndpi_str, 1 /* cleartext */, 0 /* nw proto */, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_APACHE_THRIFT,
+			  "Thrift", NDPI_PROTOCOL_CATEGORY_RPC,
+			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
+			  ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
 
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
@@ -4976,6 +4981,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) {
   /*BITCOIN*/
   init_bitcoin_dissector(ndpi_str, &a);
 
+  /* Apache Thrift */
+  init_apache_thrift_dissector(ndpi_str, &a);
+
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main_init.c"
 #endif
diff --git a/src/lib/protocols/coap.c b/src/lib/protocols/coap.c
index 6d0f68d46..8935aa22a 100644
--- a/src/lib/protocols/coap.c
+++ b/src/lib/protocols/coap.c
@@ -39,6 +39,8 @@ struct ndpi_coap_hdr
   u_int8_t version:2, type:2, tkl:4;
 #elif defined(__LITTLE_ENDIAN__)
   u_int8_t tkl:4, type:2, version:2;
+#else
+#error "Missing endian macro definitions."
 #endif
   u_int8_t code;
   u_int16_t message_id; //if needed, remember to convert in host number
diff --git a/src/lib/protocols/thrift.c b/src/lib/protocols/thrift.c
new file mode 100644
index 000000000..344795523
--- /dev/null
+++ b/src/lib/protocols/thrift.c
@@ -0,0 +1,269 @@
+/*
+ * thrift.c
+ *
+ * Copyright (C) 2023 - ntop.org
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI is free software: you can redistribute 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_APACHE_THRIFT
+
+#include "ndpi_api.h"
+
+#include <stdint.h>
+
+// References: https://thrift.apache.org AND https://github.com/apache/thrift
+// Not Implemented (sub)protocols: TJSONProtocol, TSimpleJSONProtocol and TDebugProtocol
+
+// TBinaryProtocol
+PACK_ON
+struct thrift_strict_hdr {
+  uint8_t protocol_id;
+  uint8_t version;
+  uint8_t unused_byte_pad;
+  uint8_t message_type;
+  uint32_t method_length;
+  char method[0];
+} PACK_OFF;
+
+// TCompactProtocol
+PACK_ON
+struct thrift_compact_hdr {
+  uint8_t protocol_id;
+#if defined(__BIG_ENDIAN__)
+  uint8_t message_type : 3;
+  uint8_t version : 5;
+#elif defined(__LITTLE_ENDIAN__)
+  uint8_t version : 5;
+  uint8_t message_type : 3;
+#else
+#error "Missing endian macro definitions."
+#endif
+  uint8_t sequence_id[3];
+  uint8_t method_length;
+  char method[0];
+} PACK_OFF;
+
+enum thrift_message_type {
+  TMT_INVALID_TMESSAGE_TYPE = 0,
+  TMT_CALL                  = 1,
+  TMT_REPLY                 = 2,
+  TMT_EXCEPTION             = 3,
+  TMT_ONEWAY                = 4,
+  TMT_TYPE_MAX
+};
+
+static void ndpi_int_thrift_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+                                           struct ndpi_flow_struct *flow,
+                                           uint16_t master_protocol)
+{
+  switch (master_protocol)
+  {
+    case NDPI_PROTOCOL_UNKNOWN:
+      NDPI_LOG_DBG(ndpi_struct, "found Apache Thrift TCP/UDP\n");
+      break;
+    case NDPI_PROTOCOL_HTTP:
+      NDPI_LOG_DBG(ndpi_struct, "found Apache Thrift HTTP\n");
+      break;
+    default:
+      NDPI_LOG_DBG(ndpi_struct, "found Apache Thrift\n");
+      break;
+  }
+
+  ndpi_set_detected_protocol(ndpi_struct, flow,
+                             NDPI_PROTOCOL_APACHE_THRIFT, master_protocol,
+                             NDPI_CONFIDENCE_DPI);
+}
+
+static int thrift_validate_method(char const * const method, size_t method_length)
+{
+  const union {
+    uint8_t const * const ptr;
+    char const * const str;
+  } m = { .str = method };
+
+  return ndpi_is_printable_buffer(m.ptr, method_length);
+}
+
+static int thrift_validate_version(uint8_t version)
+{
+  return version <= 0x01;
+}
+
+static int thrift_validate_type(uint8_t message_type)
+{
+  return message_type < TMT_TYPE_MAX;
+}
+
+static void thrift_set_method(struct ndpi_detection_module_struct *ndpi_struct,
+                              struct ndpi_flow_struct *flow,
+                              char const * const method, size_t method_length)
+{
+  if (thrift_validate_method(method, method_length) == 0) {
+    ndpi_set_risk(ndpi_struct, flow, NDPI_INVALID_CHARACTERS, "Invalid method name");
+    flow->protos.thrift.method[0] = '\0';
+  } else {
+    strncpy(flow->protos.thrift.method, method, method_length);
+  }
+}
+
+static void thrift_set_type(struct ndpi_detection_module_struct *ndpi_struct,
+                            struct ndpi_flow_struct *flow,
+                            uint8_t message_type)
+{
+  if (message_type == TMT_INVALID_TMESSAGE_TYPE) {
+    ndpi_set_risk(ndpi_struct, flow, NDPI_MALFORMED_PACKET, "Invalid message type");
+  }
+  flow->protos.thrift.message_type = message_type;
+
+  if (message_type == TMT_EXCEPTION) {
+    ndpi_set_risk(ndpi_struct, flow, NDPI_ERROR_CODE_DETECTED, "Apache Thrift Exception");
+  }
+}
+
+static void ndpi_dissect_strict_hdr(struct ndpi_detection_module_struct *ndpi_struct,
+                                    struct ndpi_flow_struct *flow,
+                                    struct thrift_strict_hdr const * const strict_hdr)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+  const size_t method_length = ntohl(strict_hdr->method_length);
+
+  if (packet->tcp == NULL) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  if (packet->payload_packet_len < sizeof(*strict_hdr) + method_length) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  if (thrift_validate_version(strict_hdr->version) == 0) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  if (thrift_validate_type(strict_hdr->message_type) == 0) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  ndpi_int_thrift_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_UNKNOWN);
+
+  thrift_set_method(ndpi_struct, flow, strict_hdr->method, method_length);
+  thrift_set_type(ndpi_struct, flow, strict_hdr->message_type);
+}
+
+static void ndpi_dissect_compact_hdr(struct ndpi_detection_module_struct *ndpi_struct,
+                                     struct ndpi_flow_struct *flow,
+                                     struct thrift_compact_hdr const * const compact_hdr)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+
+  if (packet->udp == NULL) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  if (packet->payload_packet_len < sizeof(*compact_hdr) + compact_hdr->method_length) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  if (thrift_validate_version(compact_hdr->version) == 0) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  if (thrift_validate_type(compact_hdr->message_type) == 0) {
+    NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+    return;
+  }
+
+  ndpi_int_thrift_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_UNKNOWN);
+
+  thrift_set_method(ndpi_struct, flow, compact_hdr->method, compact_hdr->method_length);
+  thrift_set_type(ndpi_struct, flow, compact_hdr->message_type);
+}
+
+static void ndpi_search_thrift_tcp_udp(struct ndpi_detection_module_struct *ndpi_struct,
+                                       struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+
+  NDPI_LOG_DBG(ndpi_struct, "search Apache Thrift\n");
+
+  if (flow->detected_protocol_stack[0] == NDPI_PROTOCOL_HTTP ||
+      flow->detected_protocol_stack[1] == NDPI_PROTOCOL_HTTP)
+  {
+    /* Check Thrift over HTTP */
+    if (packet->content_line.ptr != NULL)
+    {
+      if ((LINE_ENDS(packet->content_line, "application/vnd.apache.thrift.binary") != 0) ||
+          (LINE_ENDS(packet->content_line, "application/vnd.apache.thrift.compact") != 0) ||
+          (LINE_ENDS(packet->content_line, "application/vnd.apache.thrift.json") != 0))
+      {
+        NDPI_LOG_INFO(ndpi_struct, "found Apache Thrift over HTTP\n");
+        ndpi_int_thrift_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_HTTP);
+        return;
+      }
+    }
+  } else if (packet->payload_packet_len >= sizeof(struct thrift_compact_hdr)) {
+    const union {
+      uint8_t const * const raw_ptr;
+      struct thrift_strict_hdr const * const strict_hdr;
+      struct thrift_compact_hdr const * const compact_hdr;
+    } thrift_data = { .raw_ptr = &packet->payload[0] };
+
+    if (thrift_data.raw_ptr[0] == 0x80)
+    {
+      /* Strict Binary Protocol */
+      if (packet->payload_packet_len < sizeof(*thrift_data.strict_hdr))
+      {
+        NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+        return;
+      }
+
+      ndpi_dissect_strict_hdr(ndpi_struct, flow, thrift_data.strict_hdr);
+      return;
+    } else if (thrift_data.raw_ptr[0] == 0x82) {
+      /* Compact Protocol */
+      ndpi_dissect_compact_hdr(ndpi_struct, flow, thrift_data.compact_hdr);
+      return;
+    } else {
+      /* Probably not Apache Thrift. */
+      NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+      return;
+    }
+  }
+
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+
+void init_apache_thrift_dissector(struct ndpi_detection_module_struct *ndpi_struct, uint32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("Thrift", ndpi_struct, *id,
+                                      NDPI_PROTOCOL_APACHE_THRIFT,
+                                      ndpi_search_thrift_tcp_udp,
+                                      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
+                                      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+                                      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}