From e21fd7c0ceb6143a371f780aa044cd43861db975 Mon Sep 17 00:00:00 2001
From: Guy Harris <guy@alum.mit.edu>
Date: Fri, 13 Dec 2013 02:59:16 +0000
Subject: Add a "captype" file that just reports the type of a capture file,
 based on what libwiretap thinks it is.

Update some comments to reflect the death of the hack used to include
(libwiretap) plugin support in programs not built with libwireshark.

svn path=/trunk/; revision=54015
---
 captype.c | 182 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 captype.c

(limited to 'captype.c')

diff --git a/captype.c b/captype.c
new file mode 100644
index 0000000000..0065f83b6f
--- /dev/null
+++ b/captype.c
@@ -0,0 +1,182 @@
+/* captype.c
+ * Reports capture file type
+ *
+ * Based on capinfos.c
+ * Copyright 2004 Ian Schorr
+ *
+ * $Id$
+ *
+ * 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 <stdarg.h>
+#include <locale.h>
+#include <errno.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#include <glib.h>
+
+#include <wsutil/privileges.h>
+#include <wsutil/filesystem.h>
+
+#ifdef HAVE_PLUGINS
+#include <wsutil/plugins.h>
+#endif
+
+#include "wtap.h"
+#include <wsutil/report_err.h>
+#include <wsutil/privileges.h>
+#include <wsutil/str_util.h>
+
+#ifdef _WIN32
+#include <wsutil/unicode-utils.h>
+#endif /* _WIN32 */
+
+#include "svnversion.h"
+
+static void
+usage(void)
+{
+  fprintf(stderr, "Captype %s"
+#ifdef SVNVERSION
+      " (" SVNVERSION " from " SVNPATH ")"
+#endif
+      "\n", VERSION);
+  fprintf(stderr, "Prints the file types of capture files.\n");
+  fprintf(stderr, "See http://www.wireshark.org for more information.\n");
+  fprintf(stderr, "\n");
+  fprintf(stderr, "Usage: captype <infile> ...\n");
+}
+
+#ifdef HAVE_PLUGINS
+/*
+ *  Don't report failures to load plugins because most (non-wiretap) plugins
+ *  *should* fail to load (because we're not linked against libwireshark and
+ *  dissector plugins need libwireshark).
+ */
+static void
+failure_message(const char *msg_format _U_, va_list ap _U_)
+{
+  return;
+}
+#endif
+
+int
+main(int argc, char *argv[])
+{
+  wtap  *wth;
+  int    err;
+  gchar *err_info;
+  int    i;
+  int    overall_error_status;
+
+#ifdef HAVE_PLUGINS
+  char  *init_progfile_dir_error;
+#endif
+
+#ifdef _WIN32
+  arg_list_utf_16to8(argc, argv);
+  create_app_running_mutex();
+#endif /* _WIN32 */
+
+  /*
+   * Get credential information for later use.
+   */
+  init_process_policies();
+
+#ifdef HAVE_PLUGINS
+  if ((init_progfile_dir_error = init_progfile_dir(argv[0], main))) {
+    g_warning("capinfos: init_progfile_dir(): %s", init_progfile_dir_error);
+    g_free(init_progfile_dir_error);
+  } else {
+    /* Register all the plugin types we have. */
+    wtap_register_plugin_types(); /* Types known to libwiretap */
+
+    init_report_err(failure_message,NULL,NULL,NULL);
+
+    /* Scan for plugins.  This does *not* call their registration routines;
+       that's done later. */
+    scan_plugins();
+
+    /* Register all libwiretap plugin modules. */
+    register_all_wiretap_modules();
+  }
+#endif
+
+  /* Set the C-language locale to the native environment. */
+  setlocale(LC_ALL, "");
+
+  if ((argc - optind) < 1) {
+    usage();
+    return 1;
+  }
+
+  overall_error_status = 0;
+
+  for (i = 1; i < argc; i++) {
+    wth = wtap_open_offline(argv[i], &err, &err_info, FALSE);
+
+    if (!wth) {
+      fprintf(stderr, "capinfos: Can't open %s: %s\n", argv[i],
+          wtap_strerror(err));
+      switch (err) {
+
+        case WTAP_ERR_UNSUPPORTED:
+        case WTAP_ERR_UNSUPPORTED_ENCAP:
+        case WTAP_ERR_BAD_FILE:
+          fprintf(stderr, "(%s)\n", err_info);
+          g_free(err_info);
+          break;
+      }
+      overall_error_status = 1; /* remember that an error has occurred */
+    }
+
+    if(wth) {
+      printf("%s: %s\n", argv[i], wtap_file_type_subtype_short_string(wtap_file_type_subtype(wth)));
+      wtap_close(wth);
+    }
+  }
+
+  return overall_error_status;
+}
+
+/*
+ * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 2
+ * tab-width: 2
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=2 tabstop=2 expandtab:
+ * :indentSize=2:tabSize=2:noTabs=true:
+ */
-- 
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