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Sourcecode: wireshark version File versions

epan.c

/* epan.h
 *
 * $Id: epan.c 19327 2006-09-26 10:22:20Z lego $
 *
 * Wireshark Protocol Analyzer Library
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#if (defined(HAVE_LIBGCRYPT) || defined(HAVE_LIBGNUTLS)) && defined(_WIN32)
#include <winposixtype.h>
#endif

#ifdef HAVE_LIBGCRYPT
#include <gcrypt.h>
#endif /* HAVE_LIBGCRYPT */

#ifdef HAVE_LIBGNUTLS
#include <gnutls/gnutls.h>
#endif /* HAVE_LIBGNUTLS */


#include <glib.h>
#include "epan.h"
#include "epan_dissect.h"
#include "report_err.h"

#include "conversation.h"
#include "circuit.h"
#include "except.h"
#include "packet.h"
#include "column-utils.h"
#include "tap.h"
#include "addr_resolv.h"
#include "oid_resolv.h"
#include "emem.h"
#include "expert.h"

#ifdef HAVE_LUA_5_1
      int wslua_init(void*);
#endif

static void (*report_failure_func)(const char *, va_list);
static void (*report_open_failure_func)(const char *, int, gboolean);
static void (*report_read_failure_func)(const char *, int);

gchar*
epan_get_version(void) {
  return VERSION;
}

/*
 * XXX - this takes the plugin directory as an argument, because
 * libwireshark now has its own configure script and "config.h" file,
 * which is what code in the "epan" directory includes, but we need
 * to define PLUGIN_DIR in the top-level directory, as it's used by,
 * for example, the Makefile for the Gryphon plugin, so it knows
 * where to install the plugin.
 *
 * Eventually, we should probably have an "epan-configure" script
 * (or "libwireshark-configure", or whatever), along the lines of what
 * GTK+ and GLib have, that can print, among other things, the directory
 * into which plugins should be installed.  That way, only libwireshark
 * need know what directory that is; programs using it won't, *and*
 * Makefiles for plugins can just use "epan-configure" to figure out
 * where to install the plugins.
 *
 * (Would that *more* libraries had configure scripts like that, so
 * that configure scripts didn't have to go through various contortions
 * to figure out where the header files and libraries for various
 * libraries are located.)
 */
void
epan_init(const char *plugin_dir, void (*register_all_protocols)(void),
        void (*register_all_handoffs)(void),
        void (*report_failure)(const char *, va_list),
        void (*report_open_failure)(const char *, int, gboolean),
        void (*report_read_failure)(const char *, int))
{
      report_failure_func = report_failure;
      report_open_failure_func = report_open_failure;
      report_read_failure_func = report_read_failure;
      except_init();
#ifdef HAVE_LIBGNUTLS
      gnutls_global_init();
#elif defined(HAVE_LIBGCRYPT)
      gcry_check_version(NULL);
#endif
      tvbuff_init();
      oid_resolv_init();
      tap_init();
      proto_init(plugin_dir,register_all_protocols,register_all_handoffs);
      packet_init();
      dfilter_init();
      final_registration_all_protocols();
      host_name_lookup_init();
      expert_init();
#ifdef HAVE_LUA_5_1
      wslua_init(NULL);
#endif

}

void
epan_cleanup(void)
{
      expert_cleanup();
      dfilter_cleanup();
      proto_cleanup();
      packet_cleanup();
      oid_resolv_cleanup();
      tvbuff_cleanup();
#ifdef HAVE_LIBGNUTLS
      gnutls_global_deinit();
#endif
      except_deinit();
      host_name_lookup_cleanup();
}

void
epan_conversation_init(void)
{
      conversation_init();
}

void
epan_circuit_init(void)
{
      circuit_init();
}

/*
 * Report a general error.
 */
void
report_failure(const char *msg_format, ...)
{
      va_list ap;

      va_start(ap, msg_format);
      (*report_failure_func)(msg_format, ap);
      va_end(ap);
}

/*
 * Report an error when trying to open or create a file.
 * "err" is assumed to be an error code from Wiretap; positive values are
 * UNIX-style errnos, so this can be used for open failures not from
 * Wiretap as long as the failue code is just an errno.
 */
void
report_open_failure(const char *filename, int err,
    gboolean for_writing)
{
      (*report_open_failure_func)(filename, err, for_writing);
}

/*
 * Report an error when trying to read a file.
 * "err" is assumed to be a UNIX-style errno.
 */
void
report_read_failure(const char *filename, int err)
{
      (*report_read_failure_func)(filename, err);
}

epan_dissect_t*
epan_dissect_new(gboolean create_proto_tree, gboolean proto_tree_visible)
{
      epan_dissect_t    *edt;

      edt = g_new(epan_dissect_t, 1);

      if (create_proto_tree) {
            edt->tree = proto_tree_create_root();
            proto_tree_set_visible(edt->tree, proto_tree_visible);
      }
      else {
            edt->tree = NULL;
      }

      return edt;
}

void
epan_dissect_run(epan_dissect_t *edt, void* pseudo_header,
        const guint8* data, frame_data *fd, column_info *cinfo)
{
      /* free all memory allocated during previous packet */
      ep_free_all();

      dissect_packet(edt, pseudo_header, data, fd, cinfo);
}


void
epan_dissect_free(epan_dissect_t* edt)
{
      /* Free the data sources list. */
      free_data_sources(&edt->pi);

      /* Free all tvb's created from this tvb, unless dissector
       * wanted to store the pointer (in which case, the dissector
       * would have incremented the usage count on that tvbuff_t*) */
      tvb_free_chain(edt->tvb);

      if (edt->tree) {
            proto_tree_free(edt->tree);
      }

      g_free(edt);
}

void
epan_dissect_prime_dfilter(epan_dissect_t *edt, const dfilter_t* dfcode)
{
      dfilter_prime_proto_tree(dfcode, edt->tree);
}

void
epan_dissect_fill_in_columns(epan_dissect_t *edt)
{
    col_fill_in(&edt->pi);
}

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