Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 247 insertions, 0 deletions

diff --git a/epan/dissectors/packet-ua.c b/epan/dissectors/packet-ua.c
new file mode 100644
index 00000000..c5e5d460
--- /dev/null
+++ b/epan/dissectors/packet-ua.c
@@ -0,0 +1,247 @@
+/* packet-ua.c
+ * Routines for UA/UDP (Universal Alcatel over UDP) packet dissection.
+ * Copyright 2012, Alcatel-Lucent Enterprise <lars.ruoff@alcatel-lucent.com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+
+#include "packet-uaudp.h"
+
+void proto_register_ua_msg(void);
+void proto_reg_handoff_ua_msg(void);
+/*-----------------------------------------------------------------------------
+  GLOBALS
+  ---------------------------------------------------------------------------*/
+
+#if 0
+static dissector_table_t ua_opcode_dissector_table;
+#endif
+
+static int  proto_ua_msg        = -1;
+static gint ett_ua_msg          = -1;
+
+static dissector_handle_t noe_handle;
+static dissector_handle_t ua3g_handle;
+
+static void uadecode(e_ua_direction  direction,
+                     proto_tree     *tree,
+                     packet_info    *pinfo,
+                     tvbuff_t       *tvb,
+                     gint            offset,
+                     gint            opcode,
+                     gint            length)
+{
+    switch (opcode & 0x7f) /* suppression of the CP bit */
+    {
+    case 0x15:
+    case 0x16:
+        {
+            call_dissector(noe_handle,
+                           tvb_new_subset_length(tvb, offset, length),
+                           pinfo,
+                           tree);
+            break;
+        }
+    case 0x00:
+    case 0x01:
+    case 0x02:
+    case 0x03:
+    case 0x04:
+    case 0x05:
+    case 0x06:
+    case 0x07:  /* Only UA NOE */
+    case 0x08:  /* Only UA NOE */
+    case 0x09:
+    case 0x0A:
+    case 0x0B:
+    case 0x0C:
+    case 0x0D:
+    case 0x0E:
+    case 0x0F:
+    case 0x11:
+    case 0x12:
+    case 0x13:
+    case 0x14:
+    case 0x17:
+    case 0x18:
+    case 0x1F:  /* case 0x9F */
+    case 0x20:
+    case 0x21:
+    case 0x22:
+    case 0x23:
+    case 0x24:  /* Only IP NOE */
+    case 0x25:  /* Only IP NOE */
+    case 0x26:
+    case 0x27:
+    case 0x28:
+    case 0x29:
+    case 0x2A:
+    case 0x2B:  /* Only UA NOE */
+    case 0x2C:
+    case 0x2D:
+    case 0x2E:
+    case 0x30:
+    case 0x31:
+    case 0x32:  /* Only UA NOE */
+    case 0x33:
+    case 0x35:
+    case 0x36:  /* IP Phone */
+    case 0x38:
+    case 0x39:
+    case 0x3A:
+    case 0x3B:
+    case 0x3C:
+    case 0x3D:
+    case 0x3E:
+    case 0x3F:
+    case 0x40:
+    case 0x41:
+    case 0x42:
+    case 0x43:
+    case 0x44:
+    case 0x45:
+    case 0x46:
+    case 0x47:
+    case 0x48:
+    case 0x49:
+    case 0x4A:
+    case 0x4B:
+    case 0x4C:
+    case 0x4D:
+    case 0x4E:
+    case 0x4F:
+    case 0x50:  /* Only UA NOE */
+        {
+            call_dissector_with_data(ua3g_handle,
+                       tvb_new_subset_length(tvb, offset, length),
+                       pinfo,
+                       tree, &direction);
+            break;
+        }
+    default:
+        {
+            /* add text to the frame "INFO" column */
+            col_append_fstr(pinfo->cinfo, COL_INFO, " - UA3G Message ERR: Opcode (0x%02x) Unknown", tvb_get_guint8(tvb, (offset + 2)));
+
+            call_data_dissector(tvb_new_subset_length(tvb, offset, length),
+                           pinfo,
+                           tree);
+            break;
+        }
+    }
+}
+
+
+
+/*-----------------------------------------------------------------------------
+  UA DISSECTOR
+  ---------------------------------------------------------------------------*/
+static void _dissect_ua_msg(tvbuff_t       *tvb,
+                            packet_info    *pinfo,
+                            proto_tree     *tree,
+                            e_ua_direction  direction)
+{
+    gint        offset = 0;
+    proto_item *ua_msg_item;
+    proto_tree *ua_msg_tree;
+
+    ua_msg_item = proto_tree_add_protocol_format(tree, proto_ua_msg, tvb, 0, -1,
+        "Universal Alcatel Protocol, %s",
+        ((direction == SYS_TO_TERM) ?
+        "System -> Terminal" : "Terminal -> System"));
+
+    ua_msg_tree = proto_item_add_subtree(ua_msg_item, ett_ua_msg);
+
+    while (tvb_offset_exists(tvb, offset))
+    {
+        gint length = tvb_get_letohs(tvb, offset) + 2;
+        gint opcode = tvb_get_guint8(tvb, offset+2);
+
+        uadecode(direction, ua_msg_tree, pinfo, tvb, offset, opcode, length);
+
+        offset += length;
+    }
+}
+
+
+static int dissect_ua_sys_to_term(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+    _dissect_ua_msg(tvb, pinfo, tree, SYS_TO_TERM);
+    return tvb_captured_length(tvb);
+}
+
+static int dissect_ua_term_to_sys(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+    _dissect_ua_msg(tvb, pinfo, tree, TERM_TO_SYS);
+    return tvb_captured_length(tvb);
+}
+
+
+/*-----------------------------------------------------------------------------
+  DISSECTORS REGISTRATION FUNCTIONS
+  ---------------------------------------------------------------------------*/
+
+void proto_register_ua_msg(void)
+{
+    static gint *ett[] =
+    {
+        &ett_ua_msg,
+    };
+
+    /* UA dissector registration */
+    proto_ua_msg = proto_register_protocol("Universal Alcatel Protocol", "UA", "ua");
+
+    register_dissector("ua_sys_to_term", dissect_ua_sys_to_term, proto_ua_msg);
+    register_dissector("ua_term_to_sys", dissect_ua_term_to_sys, proto_ua_msg);
+
+    /* Common subtree array registration */
+    proto_register_subtree_array(ett, array_length(ett));
+}
+
+void proto_reg_handoff_ua_msg(void)
+{
+#if 0  /* Future */
+    dissector_handle_t handle_ua_msg;
+
+    /* hooking of UA on UAUDP */
+    /* XXX: The following is NG since the same 'pattern' is added twice */
+    handle_ua_msg = find_dissector("ua_sys_to_term");
+    dissector_add_uint("uaudp.opcode", UAUDP_DATA, handle_ua_msg);
+
+    handle_ua_msg = find_dissector("ua_term_to_sys");
+    dissector_add_uint("uaudp.opcode", UAUDP_DATA, handle_ua_msg);
+
+    /* For hooking dissectors to UA */
+    ua_opcode_dissector_table =
+        register_dissector_table("ua.opcode",
+                                 "ua.opcode",
+                                 FT_UINT8,
+                                 BASE_HEX);
+
+
+#endif
+    noe_handle  = find_dissector_add_dependency("noe", proto_ua_msg);
+    ua3g_handle = find_dissector_add_dependency("ua3g", proto_ua_msg);
+
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */