Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 197 insertions, 0 deletions

diff --git a/epan/dissectors/packet-ascend.c b/epan/dissectors/packet-ascend.c
new file mode 100644
index 0000000..ed683dd
--- /dev/null
+++ b/epan/dissectors/packet-ascend.c
@@ -0,0 +1,197 @@
+/* packet-ascend.c
+ * Routines for decoding Lucent/Ascend packet traces
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <wiretap/wtap.h>
+
+void proto_register_ascend(void);
+void proto_reg_handoff_ascend(void);
+
+static int proto_ascend  = -1;
+static int hf_link_type  = -1;
+static int hf_session_id = -1;
+static int hf_called_number = -1;
+static int hf_chunk      = -1;
+static int hf_task       = -1;
+static int hf_user_name  = -1;
+
+static gint ett_raw = -1;
+
+static const value_string encaps_vals[] = {
+  {ASCEND_PFX_WDS_X,  "PPP Transmit"               },
+  {ASCEND_PFX_WDS_R,  "PPP Receive"                },
+  {ASCEND_PFX_WDD,    "Ethernet triggering dialout"},
+  {ASCEND_PFX_ISDN_X, "ISDN Transmit"              },
+  {ASCEND_PFX_ISDN_R, "ISDN Receive"               },
+  {ASCEND_PFX_ETHER,  "Ethernet"                   },
+  {0,                  NULL                        }
+};
+
+static dissector_handle_t ascend_handle;
+static dissector_handle_t eth_withoutfcs_handle;
+static dissector_handle_t ppp_hdlc_handle;
+static dissector_handle_t lapd_phdr_handle;
+
+static int
+dissect_ascend(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+  proto_tree                    *fh_tree;
+  proto_item                    *ti, *hidden_item;
+  union wtap_pseudo_header      *pseudo_header = pinfo->pseudo_header;
+  struct isdn_phdr              isdn;
+
+  /* load the top pane info. This should be overwritten by
+     the next protocol in the stack */
+  col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A");
+  col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A");
+  col_set_str(pinfo->cinfo, COL_PROTOCOL, "N/A");
+  col_set_str(pinfo->cinfo, COL_INFO, "Lucent/Ascend packet trace");
+
+  /* If this is a transmitted or received PPP frame, set the PPP direction. */
+  switch (pseudo_header->ascend.type) {
+
+  case ASCEND_PFX_WDS_X:
+    pinfo->p2p_dir = P2P_DIR_SENT;
+    break;
+
+  case ASCEND_PFX_WDS_R:
+    pinfo->p2p_dir = P2P_DIR_RECV;
+    break;
+  }
+
+  /* populate a tree in the second pane with the status of the link
+     layer (ie none) */
+  if(tree) {
+    ti = proto_tree_add_protocol_format(tree, proto_ascend, tvb, 0, 0,
+                                        "Lucent/Ascend packet trace");
+    fh_tree = proto_item_add_subtree(ti, ett_raw);
+    proto_tree_add_uint(fh_tree, hf_link_type, tvb, 0, 0,
+                        pseudo_header->ascend.type);
+    switch (pseudo_header->ascend.type) {
+
+    case ASCEND_PFX_WDD:
+      /* Ethernet packet forcing a call */
+      proto_tree_add_string(fh_tree, hf_called_number, tvb, 0, 0,
+                            pseudo_header->ascend.call_num);
+      proto_tree_add_uint(fh_tree, hf_chunk, tvb, 0, 0,
+                          pseudo_header->ascend.chunk);
+      hidden_item = proto_tree_add_uint(fh_tree, hf_session_id, tvb, 0, 0, 0);
+      proto_item_set_hidden(hidden_item);
+      break;
+
+    case ASCEND_PFX_WDS_X:
+    case ASCEND_PFX_WDS_R:
+      /* wandsession data */
+      proto_tree_add_string(fh_tree, hf_user_name, tvb, 0, 0,
+                            pseudo_header->ascend.user);
+      proto_tree_add_uint(fh_tree, hf_session_id, tvb, 0, 0,
+                          pseudo_header->ascend.sess);
+      hidden_item = proto_tree_add_uint(fh_tree, hf_chunk, tvb, 0, 0, 0);
+      proto_item_set_hidden(hidden_item);
+      break;
+
+    default:
+      break;
+    }
+    proto_tree_add_uint(fh_tree, hf_task, tvb, 0, 0, pseudo_header->ascend.task);
+  }
+
+  switch (pseudo_header->ascend.type) {
+    case ASCEND_PFX_WDS_X:
+    case ASCEND_PFX_WDS_R:
+      call_dissector(ppp_hdlc_handle, tvb, pinfo, tree);
+      break;
+    case ASCEND_PFX_WDD:
+    case ASCEND_PFX_ETHER:
+      call_dissector(eth_withoutfcs_handle, tvb, pinfo, tree);
+      break;
+    case ASCEND_PFX_ISDN_X:
+      isdn.uton = TRUE;
+      isdn.channel = 0;
+      call_dissector_with_data(lapd_phdr_handle, tvb, pinfo, tree, &isdn);
+      break;
+    case ASCEND_PFX_ISDN_R:
+      isdn.uton = FALSE;
+      isdn.channel = 0;
+      call_dissector_with_data(lapd_phdr_handle, tvb, pinfo, tree, &isdn);
+      break;
+    default:
+      break;
+  }
+  return tvb_captured_length(tvb);
+}
+
+void
+proto_register_ascend(void)
+{
+  static hf_register_info hf[] = {
+    { &hf_link_type,
+      { "Link type",      "ascend.type",  FT_UINT32, BASE_DEC,    VALS(encaps_vals),      0x0,
+        NULL, HFILL }},
+
+    { &hf_session_id,
+      { "Session ID",     "ascend.sess",  FT_UINT32, BASE_DEC,    NULL, 0x0,
+        NULL, HFILL }},
+
+    { &hf_called_number,
+      { "Called number",  "ascend.number", FT_STRING, BASE_NONE,  NULL, 0x0,
+        NULL, HFILL }},
+
+    { &hf_chunk,
+      { "WDD Chunk",      "ascend.chunk", FT_UINT32, BASE_HEX,    NULL, 0x0,
+        NULL, HFILL }},
+
+    { &hf_task,
+      { "Task",           "ascend.task",  FT_UINT32, BASE_HEX,    NULL, 0x0,
+        NULL, HFILL }},
+
+    { &hf_user_name,
+      { "User name",      "ascend.user",  FT_STRING, BASE_NONE,   NULL, 0x0,
+        NULL, HFILL }},
+  };
+  static gint *ett[] = {
+    &ett_raw,
+  };
+
+  proto_ascend = proto_register_protocol("Lucent/Ascend debug output",
+                                         "Lucent/Ascend", "ascend");
+  proto_register_field_array(proto_ascend, hf, array_length(hf));
+  proto_register_subtree_array(ett, array_length(ett));
+
+  ascend_handle = register_dissector("ascend", dissect_ascend, proto_ascend);
+}
+
+void
+proto_reg_handoff_ascend(void)
+{
+  /*
+   * Get handles for the Ethernet, PPP-in-HDLC-like-framing, and
+   * LAPD-with-pseudoheader dissectors.
+   */
+  eth_withoutfcs_handle = find_dissector_add_dependency("eth_withoutfcs", proto_ascend);
+  ppp_hdlc_handle = find_dissector_add_dependency("ppp_hdlc", proto_ascend);
+  lapd_phdr_handle = find_dissector_add_dependency("lapd-phdr", proto_ascend);
+
+  dissector_add_uint("wtap_encap", WTAP_ENCAP_ASCEND, ascend_handle);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local Variables:
+ * c-basic-offset: 2
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * ex: set shiftwidth=2 tabstop=8 expandtab:
+ * :indentSize=2:tabSize=8:noTabs=true:
+ */