Have routines for parsing options that affect dissection.

Have them handle -d, -t, --disable-protocol, --disable-heuristic, and
--enable-heuristic for TShark and both flavors of Wireshark.

Change-Id: I612c276b1f9df8a2092202d23ab3d48be7857e85
Reviewed-on: https://code.wireshark.org/review/18583
Petri-Dish: Guy Harris <guy@alum.mit.edu>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 125 insertions, 0 deletions

diff --git a/ui/dissect_opts.c b/ui/dissect_opts.c
new file mode 100644
index 0000000000..aa9691f58f
--- /dev/null
+++ b/ui/dissect_opts.c
@@ -0,0 +1,125 @@
+/* dissect_opts.c
+ * Routines for dissection options setting
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <string.h>
+
+#include <errno.h>
+
+#include <glib.h>
+
+#include <epan/timestamp.h>
+
+#include "ui/decode_as_utils.h"
+
+#include <wsutil/clopts_common.h>
+#include <wsutil/cmdarg_err.h>
+#include <wsutil/file_util.h>
+
+#include "ui/dissect_opts.h"
+
+dissect_options global_dissect_options;
+
+void
+dissect_opts_init(void)
+{
+    global_dissect_options.time_format = TS_NOT_SET;
+    global_dissect_options.disable_protocol_slist = NULL;
+    global_dissect_options.enable_heur_slist = NULL;
+    global_dissect_options.disable_heur_slist = NULL;
+}
+
+void
+dissect_opts_add_opt(int opt, char *optarg_str_p)
+{
+    switch(opt) {
+    case 'd':        /* Decode as rule */
+        if (!decode_as_command_option(optarg_str_p))
+             exit(1);
+        break;
+    case 't':        /* Time stamp type */
+        if (strcmp(optarg_str_p, "r") == 0)
+            global_dissect_options.time_format = TS_RELATIVE;
+        else if (strcmp(optarg_str_p, "a") == 0)
+            global_dissect_options.time_format = TS_ABSOLUTE;
+        else if (strcmp(optarg_str_p, "ad") == 0)
+            global_dissect_options.time_format = TS_ABSOLUTE_WITH_YMD;
+        else if (strcmp(optarg_str_p, "adoy") == 0)
+            global_dissect_options.time_format = TS_ABSOLUTE_WITH_YDOY;
+        else if (strcmp(optarg_str_p, "d") == 0)
+            global_dissect_options.time_format = TS_DELTA;
+        else if (strcmp(optarg_str_p, "dd") == 0)
+            global_dissect_options.time_format = TS_DELTA_DIS;
+        else if (strcmp(optarg_str_p, "e") == 0)
+            global_dissect_options.time_format = TS_EPOCH;
+        else if (strcmp(optarg_str_p, "u") == 0)
+            global_dissect_options.time_format = TS_UTC;
+        else if (strcmp(optarg_str_p, "ud") == 0)
+            global_dissect_options.time_format = TS_UTC_WITH_YMD;
+        else if (strcmp(optarg_str_p, "udoy") == 0)
+            global_dissect_options.time_format = TS_UTC_WITH_YDOY;
+        else {
+            cmdarg_err("Invalid time stamp type \"%s\"; it must be one of:", optarg_str_p);
+            cmdarg_err_cont("\t\"a\"    for absolute\n"
+                            "\t\"ad\"   for absolute with YYYY-MM-DD date\n"
+                            "\t\"adoy\" for absolute with YYYY/DOY date\n"
+                            "\t\"d\"    for delta\n"
+                            "\t\"dd\"   for delta displayed\n"
+                            "\t\"e\"    for epoch\n"
+                            "\t\"r\"    for relative\n"
+                            "\t\"u\"    for absolute UTC\n"
+                            "\t\"ud\"   for absolute UTC with YYYY-MM-DD date\n"
+                            "\t\"udoy\" for absolute UTC with YYYY/DOY date");
+            exit(1);
+        }
+        break;
+    case LONGOPT_DISABLE_PROTOCOL: /* disable dissection of protocol */
+        global_dissect_options.disable_protocol_slist = g_slist_append(global_dissect_options.disable_protocol_slist, optarg_str_p);
+        break;
+    case LONGOPT_ENABLE_HEURISTIC: /* enable heuristic dissection of protocol */
+        global_dissect_options.enable_heur_slist = g_slist_append(global_dissect_options.enable_heur_slist, optarg_str_p);
+        break;
+    case LONGOPT_DISABLE_HEURISTIC: /* disable heuristic dissection of protocol */
+        global_dissect_options.disable_heur_slist = g_slist_append(global_dissect_options.disable_heur_slist, optarg_str_p);
+        break;
+    default:
+        /* the caller is responsible to send us only the right opt's */
+        g_assert_not_reached();
+    }
+}
+
+/*
+ * Editor modelines  -  http://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:
+ */