epan/epan.c

   1 /* epan.c
   2  *
   3  * $Id$
   4  *
   5  * Wireshark Protocol Analyzer Library
   6  *
   7  * Copyright (c) 2001 by Gerald Combs <gerald@wireshark.org>
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22  */
  23
  24 #include "config.h"
  25
  26 #ifdef HAVE_PYTHON
  27 #include <Python.h> /* to get the Python version number (PY_VERSION) */
  28 #endif
  29
  30 #ifdef HAVE_LIBGCRYPT
  31 #include <wsutil/wsgcrypt.h>
  32 #endif /* HAVE_LIBGCRYPT */
  33
  34 #ifdef HAVE_LIBGNUTLS
  35 #include <gnutls/gnutls.h>
  36 #endif /* HAVE_LIBGNUTLS */
  37
  38 #include <glib.h>
  39 #include "epan.h"
  40 #include "epan_dissect.h"
  41 #include "report_err.h"
  42
  43 #include "conversation.h"
  44 #include "circuit.h"
  45 #include "except.h"
  46 #include "packet.h"
  47 #include "prefs.h"
  48 #include "column-utils.h"
  49 #include "tap.h"
  50 #include "addr_resolv.h"
  51 #include "oids.h"
  52 #include "emem.h"
  53 #include "wmem/wmem.h"
  54 #include "expert.h"
  55
  56 #ifdef HAVE_LUA
  57 #include <lua.h>
  58 #include <wslua/wslua.h>
  59 #endif
  60
  61 #ifdef HAVE_LIBSMI
  62 #include <smi.h>
  63 #endif
  64
  65 #ifdef HAVE_C_ARES
  66 #include <ares_version.h>
  67 #endif
  68
  69 const gchar*
  70 epan_get_version(void) {
  71         return VERSION;
  72 }
  73
  74 void
  75 epan_init(void (*register_all_protocols_func)(register_cb cb, gpointer client_data),
  76           void (*register_all_handoffs_func)(register_cb cb, gpointer client_data),
  77           register_cb cb,
  78           gpointer client_data,
  79           void (*report_failure_fcn_p)(const char *, va_list),
  80           void (*report_open_failure_fcn_p)(const char *, int, gboolean),
  81           void (*report_read_failure_fcn_p)(const char *, int),
  82           void (*report_write_failure_fcn_p)(const char *, int))
  83 {
  84         init_report_err(report_failure_fcn_p, report_open_failure_fcn_p,
  85             report_read_failure_fcn_p, report_write_failure_fcn_p);
  86
  87         /* initialize memory allocation subsystems */
  88         emem_init();
  89         wmem_init();
  90
  91         /* initialize the GUID to name mapping table */
  92         guids_init();
  93
  94         except_init();
  95 #ifdef HAVE_LIBGCRYPT
  96         /* initialize libgcrypt (beware, it won't be thread-safe) */
  97         gcry_check_version(NULL);
  98         gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
  99         gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
 100 #endif
 101 #ifdef HAVE_LIBGNUTLS
 102         gnutls_global_init();
 103 #endif
 104         tap_init();
 105         prefs_init();
 106         proto_init(register_all_protocols_func, register_all_handoffs_func,
 107             cb, client_data);
 108         packet_init();
 109         dfilter_init();
 110         final_registration_all_protocols();
 111         host_name_lookup_init();
 112         expert_init();
 113 #ifdef HAVE_LUA
 114         wslua_init(cb, client_data);
 115 #endif
 116 }
 117
 118 void
 119 epan_cleanup(void)
 120 {
 121         cleanup_dissection();
 122         dfilter_cleanup();
 123         proto_cleanup();
 124         prefs_cleanup();
 125         packet_cleanup();
 126         oid_resolv_cleanup();
 127 #ifdef HAVE_LIBGNUTLS
 128         gnutls_global_deinit();
 129 #endif
 130         except_deinit();
 131         host_name_lookup_cleanup();
 132         wmem_cleanup();
 133 }
 134
 135 void
 136 epan_conversation_init(void)
 137 {
 138         conversation_init();
 139 }
 140
 141 void
 142 epan_conversation_cleanup(void)
 143 {
 144         conversation_cleanup();
 145 }
 146
 147 void
 148 epan_circuit_init(void)
 149 {
 150         circuit_init();
 151 }
 152
 153 void
 154 epan_circuit_cleanup(void)
 155 {
 156         circuit_cleanup();
 157 }
 158
 159 epan_dissect_t*
 160 epan_dissect_init(epan_dissect_t *edt, const gboolean create_proto_tree, const gboolean proto_tree_visible)
 161 {
 162         g_assert(edt);
 163
 164         edt->pi.pool = wmem_allocator_new(WMEM_ALLOCATOR_SIMPLE);
 165
 166         if (create_proto_tree) {
 167                 edt->tree = proto_tree_create_root(&edt->pi);
 168                 proto_tree_set_visible(edt->tree, proto_tree_visible);
 169         }
 170         else {
 171                 edt->tree = NULL;
 172         }
 173
 174         edt->pi.dependent_frames = NULL;
 175
 176         return edt;
 177 }
 178
 179 epan_dissect_t*
 180 epan_dissect_new(const gboolean create_proto_tree, const gboolean proto_tree_visible)
 181 {
 182         epan_dissect_t *edt;
 183
 184         edt = g_new0(epan_dissect_t, 1);
 185
 186         return epan_dissect_init(edt, create_proto_tree, proto_tree_visible);
 187 }
 188
 189 void
 190 epan_dissect_fake_protocols(epan_dissect_t *edt, const gboolean fake_protocols)
 191 {
 192         if (edt)
 193                 proto_tree_set_fake_protocols(edt->tree, fake_protocols);
 194 }
 195
 196 void
 197 epan_dissect_run(epan_dissect_t *edt, struct wtap_pkthdr *phdr,
 198         const guint8* data, frame_data *fd, column_info *cinfo)
 199 {
 200         wmem_enter_packet_scope();
 201         dissect_packet(edt, phdr, data, fd, cinfo);
 202
 203         /* free all memory allocated */
 204         ep_free_all();
 205         wmem_leave_packet_scope();
 206 }
 207
 208 void
 209 epan_dissect_run_with_taps(epan_dissect_t *edt, struct wtap_pkthdr *phdr,
 210         const guint8* data, frame_data *fd, column_info *cinfo)
 211 {
 212         wmem_enter_packet_scope();
 213         tap_queue_init(edt);
 214         dissect_packet(edt, phdr, data, fd, cinfo);
 215         tap_push_tapped_queue(edt);
 216
 217         /* free all memory allocated */
 218         ep_free_all();
 219         wmem_leave_packet_scope();
 220 }
 221
 222 void
 223 epan_dissect_cleanup(epan_dissect_t* edt)
 224 {
 225         g_assert(edt);
 226
 227         g_slist_free(edt->pi.dependent_frames);
 228
 229         /* Free the data sources list. */
 230         free_data_sources(&edt->pi);
 231
 232         /* Free all tvb's chained from this tvb */
 233         tvb_free_chain(edt->tvb);
 234
 235         if (edt->tree) {
 236                 proto_tree_free(edt->tree);
 237         }
 238
 239         wmem_destroy_allocator(edt->pi.pool);
 240 }
 241
 242 void
 243 epan_dissect_free(epan_dissect_t* edt)
 244 {
 245         epan_dissect_cleanup(edt);
 246         g_free(edt);
 247 }
 248
 249 void
 250 epan_dissect_prime_dfilter(epan_dissect_t *edt, const dfilter_t* dfcode)
 251 {
 252     dfilter_prime_proto_tree(dfcode, edt->tree);
 253 }
 254
 255 /* ----------------------- */
 256 const gchar *
 257 epan_custom_set(epan_dissect_t *edt, int field_id,
 258                              gint occurrence,
 259                              gchar *result,
 260                              gchar *expr, const int size )
 261 {
 262     return proto_custom_set(edt->tree, field_id, occurrence, result, expr, size);
 263 }
 264
 265 void
 266 epan_dissect_fill_in_columns(epan_dissect_t *edt, const gboolean fill_col_exprs, const gboolean fill_fd_colums)
 267 {
 268     col_custom_set_edt(edt, edt->pi.cinfo);
 269     col_fill_in(&edt->pi, fill_col_exprs, fill_fd_colums);
 270 }
 271
 272 /*
 273  * Get compile-time information for libraries used by libwireshark.
 274  */
 275 void
 276 epan_get_compiled_version_info(GString *str)
 277 {
 278         /* SNMP */
 279         g_string_append(str, ", ");
 280 #ifdef HAVE_LIBSMI
 281         g_string_append(str, "with SMI " SMI_VERSION_STRING);
 282 #else /* no SNMP library */
 283         g_string_append(str, "without SMI");
 284 #endif /* _SMI_H */
 285
 286         /* c-ares */
 287         g_string_append(str, ", ");
 288 #ifdef HAVE_C_ARES
 289         g_string_append(str, "with c-ares " ARES_VERSION_STR);
 290 #else
 291         g_string_append(str, "without c-ares");
 292
 293         /* ADNS - only add if no c-ares */
 294         g_string_append(str, ", ");
 295 #ifdef HAVE_GNU_ADNS
 296         g_string_append(str, "with ADNS");
 297 #else
 298         g_string_append(str, "without ADNS");
 299 #endif /* HAVE_GNU_ADNS */
 300 #endif /* HAVE_C_ARES */
 301
 302         /* LUA */
 303         g_string_append(str, ", ");
 304 #ifdef HAVE_LUA
 305         g_string_append(str, "with ");
 306         g_string_append(str, LUA_VERSION);
 307 #else
 308         g_string_append(str, "without Lua");
 309 #endif /* HAVE_LUA */
 310
 311         g_string_append(str, ", ");
 312 #ifdef HAVE_PYTHON
 313         g_string_append(str, "with Python");
 314 #ifdef PY_VERSION
 315         g_string_append(str, " " PY_VERSION);
 316 #endif /* PY_VERSION */
 317 #else
 318         g_string_append(str, "without Python");
 319 #endif /* HAVE_PYTHON */
 320
 321         /* GnuTLS */
 322         g_string_append(str, ", ");
 323 #ifdef HAVE_LIBGNUTLS
 324         g_string_append(str, "with GnuTLS " LIBGNUTLS_VERSION);
 325 #else
 326         g_string_append(str, "without GnuTLS");
 327 #endif /* HAVE_LIBGNUTLS */
 328
 329         /* Gcrypt */
 330         g_string_append(str, ", ");
 331 #ifdef HAVE_LIBGCRYPT
 332         g_string_append(str, "with Gcrypt " GCRYPT_VERSION);
 333 #else
 334         g_string_append(str, "without Gcrypt");
 335 #endif /* HAVE_LIBGCRYPT */
 336
 337         /* Kerberos */
 338         /* XXX - I don't see how to get the version number, at least for KfW */
 339         g_string_append(str, ", ");
 340 #ifdef HAVE_KERBEROS
 341 #ifdef HAVE_MIT_KERBEROS
 342         g_string_append(str, "with MIT Kerberos");
 343 #else
 344         /* HAVE_HEIMDAL_KERBEROS */
 345         g_string_append(str, "with Heimdal Kerberos");
 346 #endif
 347 #else
 348         g_string_append(str, "without Kerberos");
 349 #endif /* HAVE_KERBEROS */
 350
 351         /* GeoIP */
 352         g_string_append(str, ", ");
 353 #ifdef HAVE_GEOIP
 354         g_string_append(str, "with GeoIP");
 355 #else
 356         g_string_append(str, "without GeoIP");
 357 #endif /* HAVE_GEOIP */
 358
 359 }
 360
 361 /*
 362  * Get runtime information for libraries used by libwireshark.
 363  */
 364 void
 365 epan_get_runtime_version_info(GString *str
 366 #if !defined(HAVE_LIBGNUTLS) && !defined(HAVE_LIBGCRYPT)
 367 _U_
 368 #endif
 369 )
 370 {
 371         /* GnuTLS */
 372 #ifdef HAVE_LIBGNUTLS
 373         g_string_append_printf(str, ", GnuTLS %s", gnutls_check_version(NULL));
 374 #endif /* HAVE_LIBGNUTLS */
 375
 376         /* Gcrypt */
 377 #ifdef HAVE_LIBGCRYPT
 378         g_string_append_printf(str, ", Gcrypt %s", gcry_check_version(NULL));
 379 #endif /* HAVE_LIBGCRYPT */
 380 }
 381
 382 /*
 383  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 384  *
 385  * Local variables:
 386  * c-basic-offset: 8
 387  * tab-width: 8
 388  * indent-tabs-mode: t
 389  * End:
 390  *
 391  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 392  * :indentSize=8:tabSize=8:noTabs=false:
 393  */