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wireshark/epan/epan.c
Michael Mann 0d1a4b2920 Add expert info configuration framework. Bug 2412 (https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2412). 
Expert info "fields" can now be registered/addressed by name.  Right now, the basic framework allows expert info fields to become "display filters".  However more could be done, like user preferences overriding default severity level, speeding up expert info dialog load time by not needing to redissect a file, etc.

Long term goal is to have all expert_info filterable and have the functionality of expert_add_info_format() include the "registered index".  expert_add_info_format_text() is the workaround until all current calls to expert_add_info_format() have been updated with either expert_add_info() or expert_add_info_format_text().  Then the remaining expert_add_info_format_text() will be renamed to expert_add_info_format().

svn path=/trunk/; revision=49559
2013-05-24 17:59:36 +00:00

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/* epan.c
*
* $Id$
*
* Wireshark Protocol Analyzer Library
*
* Copyright (c) 2001 by Gerald Combs <gerald@wireshark.org>
*
* 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"
#ifdef HAVE_PYTHON
#include <Python.h> /* to get the Python version number (PY_VERSION) */
#endif
#ifdef HAVE_LIBGCRYPT
#include <wsutil/wsgcrypt.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 "prefs.h"
#include "column-utils.h"
#include "tap.h"
#include "addr_resolv.h"
#include "oids.h"
#include "emem.h"
#include "wmem/wmem.h"
#include "expert.h"
#ifdef HAVE_LUA
#include <lua.h>
#include <wslua/wslua.h>
#endif
#ifdef HAVE_LIBSMI
#include <smi.h>
#endif
#ifdef HAVE_C_ARES
#include <ares_version.h>
#endif
const gchar*
epan_get_version(void) {
return VERSION;
}
void
epan_init(void (*register_all_protocols_func)(register_cb cb, gpointer client_data),
void (*register_all_handoffs_func)(register_cb cb, gpointer client_data),
register_cb cb,
gpointer client_data,
void (*report_failure_fcn_p)(const char *, va_list),
void (*report_open_failure_fcn_p)(const char *, int, gboolean),
void (*report_read_failure_fcn_p)(const char *, int),
void (*report_write_failure_fcn_p)(const char *, int))
{
init_report_err(report_failure_fcn_p, report_open_failure_fcn_p,
report_read_failure_fcn_p, report_write_failure_fcn_p);
/* initialize memory allocation subsystems */
emem_init();
wmem_init();
/* initialize the GUID to name mapping table */
guids_init();
except_init();
#ifdef HAVE_LIBGCRYPT
/* initialize libgcrypt (beware, it won't be thread-safe) */
gcry_check_version(NULL);
gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
#endif
#ifdef HAVE_LIBGNUTLS
gnutls_global_init();
#endif
tap_init();
prefs_init();
expert_init();
proto_init(register_all_protocols_func, register_all_handoffs_func,
cb, client_data);
packet_init();
dfilter_init();
final_registration_all_protocols();
/*host_name_lookup_init();*//* We load the hostname file in cf_open, no need to do it here? */
expert_packet_init();
#ifdef HAVE_LUA
wslua_init(cb, client_data);
#endif
}
void
epan_cleanup(void)
{
cleanup_dissection();
dfilter_cleanup();
proto_cleanup();
prefs_cleanup();
packet_cleanup();
expert_cleanup();
oid_resolv_cleanup();
#ifdef HAVE_LIBGNUTLS
gnutls_global_deinit();
#endif
except_deinit();
host_name_lookup_cleanup();
wmem_cleanup();
}
void
epan_conversation_init(void)
{
conversation_init();
}
void
epan_conversation_cleanup(void)
{
conversation_cleanup();
}
void
epan_circuit_init(void)
{
circuit_init();
}
void
epan_circuit_cleanup(void)
{
circuit_cleanup();
}
epan_dissect_t*
epan_dissect_init(epan_dissect_t *edt, const gboolean create_proto_tree, const gboolean proto_tree_visible)
{
g_assert(edt);
edt->pi.pool = wmem_allocator_new(WMEM_ALLOCATOR_SIMPLE);
if (create_proto_tree) {
edt->tree = proto_tree_create_root(&edt->pi);
proto_tree_set_visible(edt->tree, proto_tree_visible);
}
else {
edt->tree = NULL;
}
edt->pi.dependent_frames = NULL;
return edt;
}
epan_dissect_t*
epan_dissect_new(const gboolean create_proto_tree, const gboolean proto_tree_visible)
{
epan_dissect_t *edt;
edt = g_new0(epan_dissect_t, 1);
return epan_dissect_init(edt, create_proto_tree, proto_tree_visible);
}
void
epan_dissect_fake_protocols(epan_dissect_t *edt, const gboolean fake_protocols)
{
if (edt)
proto_tree_set_fake_protocols(edt->tree, fake_protocols);
}
void
epan_dissect_run(epan_dissect_t *edt, struct wtap_pkthdr *phdr,
const guint8* data, frame_data *fd, column_info *cinfo)
{
#ifdef HAVE_LUA
wslua_prime_dfilter(edt); /* done before entering wmem scope */
#endif
wmem_enter_packet_scope();
dissect_packet(edt, phdr, data, fd, cinfo);
/* free all memory allocated */
ep_free_all();
wmem_leave_packet_scope();
}
void
epan_dissect_run_with_taps(epan_dissect_t *edt, struct wtap_pkthdr *phdr,
const guint8* data, frame_data *fd, column_info *cinfo)
{
wmem_enter_packet_scope();
tap_queue_init(edt);
dissect_packet(edt, phdr, data, fd, cinfo);
tap_push_tapped_queue(edt);
/* free all memory allocated */
ep_free_all();
wmem_leave_packet_scope();
}
void
epan_dissect_cleanup(epan_dissect_t* edt)
{
g_assert(edt);
g_slist_free(edt->pi.dependent_frames);
/* Free the data sources list. */
free_data_sources(&edt->pi);
/* Free all tvb's chained from this tvb */
tvb_free_chain(edt->tvb);
if (edt->tree) {
proto_tree_free(edt->tree);
}
wmem_destroy_allocator(edt->pi.pool);
}
void
epan_dissect_free(epan_dissect_t* edt)
{
epan_dissect_cleanup(edt);
g_free(edt);
}
void
epan_dissect_prime_dfilter(epan_dissect_t *edt, const dfilter_t* dfcode)
{
dfilter_prime_proto_tree(dfcode, edt->tree);
}
/* ----------------------- */
const gchar *
epan_custom_set(epan_dissect_t *edt, int field_id,
gint occurrence,
gchar *result,
gchar *expr, const int size )
{
return proto_custom_set(edt->tree, field_id, occurrence, result, expr, size);
}
void
epan_dissect_fill_in_columns(epan_dissect_t *edt, const gboolean fill_col_exprs, const gboolean fill_fd_colums)
{
col_custom_set_edt(edt, edt->pi.cinfo);
col_fill_in(&edt->pi, fill_col_exprs, fill_fd_colums);
}
gboolean
epan_dissect_packet_contains_field(epan_dissect_t* edt,
const char *field_name)
{
GPtrArray* array;
int field_id;
gboolean contains_field;
if (!edt || !edt->tree)
return FALSE;
field_id = proto_get_id_by_filter_name(field_name);
if (field_id < 0)
return FALSE;
array = proto_find_finfo(edt->tree, field_id);
contains_field = (array->len > 0) ? TRUE : FALSE;
g_ptr_array_free(array, TRUE);
return contains_field;
}
/*
* Get compile-time information for libraries used by libwireshark.
*/
void
epan_get_compiled_version_info(GString *str)
{
/* SNMP */
g_string_append(str, ", ");
#ifdef HAVE_LIBSMI
g_string_append(str, "with SMI " SMI_VERSION_STRING);
#else /* no SNMP library */
g_string_append(str, "without SMI");
#endif /* _SMI_H */
/* c-ares */
g_string_append(str, ", ");
#ifdef HAVE_C_ARES
g_string_append(str, "with c-ares " ARES_VERSION_STR);
#else
g_string_append(str, "without c-ares");
/* ADNS - only add if no c-ares */
g_string_append(str, ", ");
#ifdef HAVE_GNU_ADNS
g_string_append(str, "with ADNS");
#else
g_string_append(str, "without ADNS");
#endif /* HAVE_GNU_ADNS */
#endif /* HAVE_C_ARES */
/* LUA */
g_string_append(str, ", ");
#ifdef HAVE_LUA
g_string_append(str, "with ");
g_string_append(str, LUA_VERSION);
#else
g_string_append(str, "without Lua");
#endif /* HAVE_LUA */
g_string_append(str, ", ");
#ifdef HAVE_PYTHON
g_string_append(str, "with Python");
#ifdef PY_VERSION
g_string_append(str, " " PY_VERSION);
#endif /* PY_VERSION */
#else
g_string_append(str, "without Python");
#endif /* HAVE_PYTHON */
/* GnuTLS */
g_string_append(str, ", ");
#ifdef HAVE_LIBGNUTLS
g_string_append(str, "with GnuTLS " LIBGNUTLS_VERSION);
#else
g_string_append(str, "without GnuTLS");
#endif /* HAVE_LIBGNUTLS */
/* Gcrypt */
g_string_append(str, ", ");
#ifdef HAVE_LIBGCRYPT
g_string_append(str, "with Gcrypt " GCRYPT_VERSION);
#else
g_string_append(str, "without Gcrypt");
#endif /* HAVE_LIBGCRYPT */
/* Kerberos */
/* XXX - I don't see how to get the version number, at least for KfW */
g_string_append(str, ", ");
#ifdef HAVE_KERBEROS
#ifdef HAVE_MIT_KERBEROS
g_string_append(str, "with MIT Kerberos");
#else
/* HAVE_HEIMDAL_KERBEROS */
g_string_append(str, "with Heimdal Kerberos");
#endif
#else
g_string_append(str, "without Kerberos");
#endif /* HAVE_KERBEROS */
/* GeoIP */
g_string_append(str, ", ");
#ifdef HAVE_GEOIP
g_string_append(str, "with GeoIP");
#else
g_string_append(str, "without GeoIP");
#endif /* HAVE_GEOIP */
}
/*
* Get runtime information for libraries used by libwireshark.
*/
void
epan_get_runtime_version_info(GString *str
#if !defined(HAVE_LIBGNUTLS) && !defined(HAVE_LIBGCRYPT)
_U_
#endif
)
{
/* GnuTLS */
#ifdef HAVE_LIBGNUTLS
g_string_append_printf(str, ", GnuTLS %s", gnutls_check_version(NULL));
#endif /* HAVE_LIBGNUTLS */
/* Gcrypt */
#ifdef HAVE_LIBGCRYPT
g_string_append_printf(str, ", Gcrypt %s", gcry_check_version(NULL));
#endif /* HAVE_LIBGCRYPT */
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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