Adding upstream version 4.2.2.upstream/4.2.2

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

1 files changed, 223 insertions, 0 deletions

diff --git a/epan/dissectors/packet-acap.c b/epan/dissectors/packet-acap.c
new file mode 100644
index 00000000..0b52a7ff
--- /dev/null
+++ b/epan/dissectors/packet-acap.c
@@ -0,0 +1,223 @@
+/* packet-acap.c
+ * Routines for ACAP packet dissection
+ * RFC 2244
+ * Copyright 2003, Brad Hards <bradh@frogmouth.net>
+ * Heavily based in packet-imap.c, Copyright 1999, Richard Sharpe <rsharpe@ns.aus.com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * Copied from packet-imap.c
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/strutil.h>
+
+/* Forward declarations */
+void proto_register_acap(void);
+void proto_reg_handoff_acap(void);
+
+static dissector_handle_t acap_handle;
+
+static int proto_acap = -1;
+
+static int hf_acap_request = -1;
+static int hf_acap_request_data = -1;
+static int hf_acap_request_tag = -1;
+static int hf_acap_response = -1;
+static int hf_acap_response_data = -1;
+static int hf_acap_response_tag = -1;
+
+static gint ett_acap = -1;
+static gint ett_acap_reqresp = -1;
+
+#define TCP_PORT_ACAP           674
+
+static int
+dissect_acap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+    gboolean      is_request;
+    proto_tree   *acap_tree, *reqresp_tree;
+    proto_item   *ti, *hidden_item;
+    gint          offset = 0;
+    const guchar *line;
+    gint          next_offset;
+    int           linelen;
+    int           tokenlen;
+    const guchar *next_token;
+
+
+    /*
+     * If this should be a request or response, do this quick check to see if
+     * it begins with a string...
+     * Otherwise, looking for the end of line in a binary file can take a long time
+     * and this probably isn't ACAP
+     */
+    if (!g_ascii_isprint(tvb_get_guint8(tvb, offset))) {
+        return 0;
+    }
+
+    col_set_str(pinfo->cinfo, COL_PROTOCOL, "ACAP");
+
+    /*
+     * Find the end of the first line.
+     *
+     * Note that "tvb_find_line_end()" will return a value that is
+     * not longer than what's in the buffer, so the "tvb_get_ptr()"
+     * call won't throw an exception.
+     */
+    linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
+    line = tvb_get_ptr(tvb, offset, linelen);
+
+    if (pinfo->match_uint == pinfo->destport)
+        is_request = TRUE;
+    else
+        is_request = FALSE;
+
+    /*
+     * Put the first line from the buffer into the summary
+     * (but leave out the line terminator).
+     */
+    col_add_fstr(pinfo->cinfo, COL_INFO, "%s: %s",
+        is_request ? "Request" : "Response",
+        format_text(pinfo->pool, line, linelen));
+
+    if (tree) {
+        ti = proto_tree_add_item(tree, proto_acap, tvb, offset, -1,
+            ENC_NA);
+        acap_tree = proto_item_add_subtree(ti, ett_acap);
+
+        if (is_request) {
+            hidden_item = proto_tree_add_boolean(acap_tree,
+                hf_acap_request, tvb, 0, 0, TRUE);
+            proto_item_set_hidden(hidden_item);
+        } else {
+            hidden_item = proto_tree_add_boolean(acap_tree,
+                hf_acap_response, tvb, 0, 0, TRUE);
+            proto_item_set_hidden(hidden_item);
+        }
+
+        /*
+         * Put the line into the protocol tree.
+         */
+        ti = proto_tree_add_format_text(acap_tree, tvb, offset, next_offset - offset);
+        reqresp_tree = proto_item_add_subtree(ti, ett_acap_reqresp);
+
+        /*
+         * Show the first line as tags + requests or replies.
+         */
+
+        /*
+         * Extract the first token, and, if there is a first
+         * token, add it as the request or reply tag.
+         */
+        tokenlen = get_token_len(line, line + linelen, &next_token);
+        if (tokenlen != 0) {
+            if (is_request) {
+                proto_tree_add_string(reqresp_tree, hf_acap_request_tag, tvb, offset,
+                    tokenlen, format_text(pinfo->pool, line, tokenlen));
+            } else {
+                proto_tree_add_string(reqresp_tree, hf_acap_response_tag, tvb, offset,
+                    tokenlen, format_text(pinfo->pool, line, tokenlen));
+            }
+            offset += (int)(next_token - line);
+            linelen -= (int)(next_token - line);
+            line = next_token;
+        }
+
+        /*
+         * Add the rest of the line as request or reply data.
+         */
+        if (linelen != 0) {
+            if (is_request) {
+                proto_tree_add_string(reqresp_tree, hf_acap_request_data, tvb, offset,
+                    linelen, format_text(pinfo->pool, line, linelen));
+            } else {
+                proto_tree_add_string(reqresp_tree, hf_acap_response_data, tvb, offset,
+                    linelen, format_text(pinfo->pool, line, linelen));
+            }
+        }
+
+        /*
+         * XXX - show the rest of the frame; this requires that
+         * we handle literals, quoted strings, continuation
+         * responses, etc..
+         *
+         * This involves a state machine, and attaching
+         * state information to the packets.
+         */
+    }
+    return tvb_captured_length(tvb);
+}
+
+void
+proto_register_acap(void)
+{
+    static hf_register_info hf[] = {
+        { &hf_acap_response,
+            { "Response", "acap.response",
+              FT_BOOLEAN, BASE_NONE, NULL, 0x0,
+              "TRUE if ACAP response", HFILL }
+        },
+        { &hf_acap_request,
+            { "Request", "acap.request",
+              FT_BOOLEAN, BASE_NONE, NULL, 0x0,
+              "TRUE if ACAP request", HFILL }
+        },
+        { &hf_acap_request_tag,
+            { "Request Tag", "acap.request_tag",
+              FT_STRING, BASE_NONE, NULL, 0x0,
+              NULL, HFILL }
+        },
+        { &hf_acap_response_tag,
+            { "Response Tag", "acap.response_tag",
+              FT_STRING, BASE_NONE, NULL, 0x0,
+              NULL, HFILL }
+        },
+        { &hf_acap_request_data,
+            { "Request", "acap.request_data",
+              FT_STRING, BASE_NONE, NULL, 0x0,
+              NULL, HFILL }
+        },
+        { &hf_acap_response_data,
+            { "Response", "acap.response_data",
+              FT_STRING, BASE_NONE, NULL, 0x0,
+              NULL, HFILL }
+        },
+    };
+
+    static gint *ett[] = {
+        &ett_acap,
+        &ett_acap_reqresp,
+    };
+
+    proto_acap = proto_register_protocol("Application Configuration Access Protocol",
+                         "ACAP", "acap");
+    proto_register_field_array(proto_acap, hf, array_length(hf));
+    proto_register_subtree_array(ett, array_length(ett));
+
+    acap_handle = register_dissector("acap", dissect_acap, proto_acap);
+}
+
+void
+proto_reg_handoff_acap(void)
+{
+    dissector_add_uint_with_preference("tcp.port", TCP_PORT_ACAP, acap_handle);
+}
+
+/*
+ * 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:
+ */