extern void oid_add_from_encoded(const char* name, const guint8 *oid, gint oid_len) { guint32* subids; guint subids_len = oid_encoded2subid(oid, oid_len, &subids); if (subids_len) { D(3,("\tOid (from encoded): %s %s ",name, oid_subid2string(subids,subids_len))); add_oid(name,OID_KIND_UNKNOWN,NULL,NULL,subids_len,subids); } else { D(1,("Failed to add Oid: %s [%d]%s ",name?name:"NULL", oid_len,bytestring_to_str(oid, oid_len, ':'))); } }
extern void oid_add_from_encoded(const char* name, const guint8 *oid, gint oid_len) { guint32* subids = NULL; guint subids_len = oid_encoded2subid(NULL, oid, oid_len, &subids); if (subids_len) { gchar* sub = oid_subid2string(NULL, subids,subids_len); D(3,("\tOid (from encoded): %s %s ",name, sub)); add_oid(name,OID_KIND_UNKNOWN,NULL,NULL,subids_len,subids); wmem_free(NULL, sub); } else { gchar* bytestr = bytestring_to_str(NULL, oid, oid_len, ':'); D(1,("Failed to add Oid: %s [%d]%s ",name?name:"NULL", oid_len, bytestr)); wmem_free(NULL, bytestr); } wmem_free(NULL, subids); }
static void dissect_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree) { proto_item *volatile ti = NULL; nstime_t ts; int cap_len = 0, frame_len = 0; proto_tree *volatile tree; proto_item *item; guint32 frame_number; frame_number=pinfo->fd->num; /* dummy so that the buildbot crashdumps will show the packetnumber where the crash occurred. */ tree=parent_tree; pinfo->current_proto = "Frame"; if (pinfo->pseudo_header != NULL) { switch (pinfo->fd->lnk_t) { case WTAP_ENCAP_WFLEET_HDLC: case WTAP_ENCAP_CHDLC_WITH_PHDR: case WTAP_ENCAP_PPP_WITH_PHDR: case WTAP_ENCAP_SDLC: case WTAP_ENCAP_BLUETOOTH_H4: case WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR: pinfo->p2p_dir = pinfo->pseudo_header->p2p.sent ? P2P_DIR_SENT : P2P_DIR_RECV; break; case WTAP_ENCAP_BLUETOOTH_HCI: pinfo->p2p_dir = pinfo->pseudo_header->bthci.sent; break; case WTAP_ENCAP_LAPB: case WTAP_ENCAP_FRELAY_WITH_PHDR: pinfo->p2p_dir = (pinfo->pseudo_header->x25.flags & FROM_DCE) ? P2P_DIR_RECV : P2P_DIR_SENT; break; case WTAP_ENCAP_ISDN: pinfo->p2p_dir = pinfo->pseudo_header->isdn.uton ? P2P_DIR_SENT : P2P_DIR_RECV; break; case WTAP_ENCAP_LINUX_LAPD: pinfo->p2p_dir = (pinfo->pseudo_header->lapd.pkttype == 3 || pinfo->pseudo_header->lapd.pkttype == 4) ? P2P_DIR_SENT : P2P_DIR_RECV; break; case WTAP_ENCAP_MTP2_WITH_PHDR: pinfo->p2p_dir = pinfo->pseudo_header->mtp2.sent ? P2P_DIR_SENT : P2P_DIR_RECV; pinfo->link_number = pinfo->pseudo_header->mtp2.link_number; pinfo->annex_a_used = pinfo->pseudo_header->mtp2.annex_a_used; break; case WTAP_ENCAP_GSM_UM: pinfo->p2p_dir = pinfo->pseudo_header->gsm_um.uplink ? P2P_DIR_SENT : P2P_DIR_RECV; break; } } /* if FRAME is not referenced from any filters we dont need to worry about generating any tree items. */ if(!proto_field_is_referenced(tree, proto_frame)) { tree=NULL; if(pinfo->fd->abs_ts.nsecs < 0 || pinfo->fd->abs_ts.nsecs >= 1000000000) expert_add_info_format(pinfo, NULL, PI_MALFORMED, PI_WARN, "Arrival Time: Fractional second out of range (0-1000000000)"); } else { proto_tree *fh_tree; /* Put in frame header information. */ cap_len = tvb_length(tvb); frame_len = tvb_reported_length(tvb); ti = proto_tree_add_protocol_format(tree, proto_frame, tvb, 0, -1, "Frame %u (%u bytes on wire, %u bytes captured)", pinfo->fd->num, frame_len, cap_len); fh_tree = proto_item_add_subtree(ti, ett_frame); ts = pinfo->fd->abs_ts; proto_tree_add_time(fh_tree, hf_frame_arrival_time, tvb, 0, 0, &ts); if(ts.nsecs < 0 || ts.nsecs >= 1000000000) { item = proto_tree_add_none_format(fh_tree, hf_frame_time_invalid, tvb, 0, 0, "Arrival Time: Fractional second %09ld is invalid, the valid range is 0-1000000000", (long) ts.nsecs); PROTO_ITEM_SET_GENERATED(item); expert_add_info_format(pinfo, item, PI_MALFORMED, PI_WARN, "Arrival Time: Fractional second out of range (0-1000000000)"); } ts = pinfo->fd->del_cap_ts; item = proto_tree_add_time(fh_tree, hf_frame_time_delta, tvb, 0, 0, &ts); PROTO_ITEM_SET_GENERATED(item); ts = pinfo->fd->del_dis_ts; item = proto_tree_add_time(fh_tree, hf_frame_time_delta_displayed, tvb, 0, 0, &ts); PROTO_ITEM_SET_GENERATED(item); ts = pinfo->fd->rel_ts; item = proto_tree_add_time(fh_tree, hf_frame_time_relative, tvb, 0, 0, &ts); PROTO_ITEM_SET_GENERATED(item); if(pinfo->fd->flags.ref_time){ ti = proto_tree_add_item(fh_tree, hf_frame_time_reference, tvb, 0, 0, FALSE); PROTO_ITEM_SET_GENERATED(ti); } proto_tree_add_uint(fh_tree, hf_frame_number, tvb, 0, 0, pinfo->fd->num); proto_tree_add_uint_format(fh_tree, hf_frame_len, tvb, 0, 0, frame_len, "Frame Length: %d byte%s", frame_len, plurality(frame_len, "", "s")); proto_tree_add_uint_format(fh_tree, hf_frame_capture_len, tvb, 0, 0, cap_len, "Capture Length: %d byte%s", cap_len, plurality(cap_len, "", "s")); if (generate_md5_hash) { const guint8 *cp; md5_state_t md_ctx; md5_byte_t digest[16]; gchar *digest_string; cp = tvb_get_ptr(tvb, 0, cap_len); md5_init(&md_ctx); md5_append(&md_ctx, cp, cap_len); md5_finish(&md_ctx, digest); digest_string = bytestring_to_str(digest, 16, '\0'); ti = proto_tree_add_string(fh_tree, hf_frame_md5_hash, tvb, 0, 0, digest_string); PROTO_ITEM_SET_GENERATED(ti); } ti = proto_tree_add_boolean(fh_tree, hf_frame_marked, tvb, 0, 0,pinfo->fd->flags.marked); PROTO_ITEM_SET_GENERATED(ti); /* we are going to be using proto_item_append_string() on * hf_frame_protocols, and we must therefore disable the * TRY_TO_FAKE_THIS_ITEM() optimisation for the tree by * setting it as visible. * * See proto.h for details. */ proto_tree_set_visible(fh_tree, TRUE); ti = proto_tree_add_string(fh_tree, hf_frame_protocols, tvb, 0, 0, ""); PROTO_ITEM_SET_GENERATED(ti); pinfo->layer_names = g_string_new(""); /* Check for existences of P2P pseudo header */ if (pinfo->p2p_dir != P2P_DIR_UNKNOWN) { proto_tree_add_int(fh_tree, hf_frame_p2p_dir, tvb, 0, 0, pinfo->p2p_dir); } /* Check for existences of MTP2 link number */ if ((pinfo->pseudo_header != NULL ) && (pinfo->fd->lnk_t == WTAP_ENCAP_MTP2_WITH_PHDR)) { proto_tree_add_uint(fh_tree, hf_link_number, tvb, 0, 0, pinfo->link_number); } if (show_file_off) { proto_tree_add_int64_format(fh_tree, hf_frame_file_off, tvb, 0, 0, pinfo->fd->file_off, "File Offset: %" G_GINT64_MODIFIER "d (0x%" G_GINT64_MODIFIER "x)", pinfo->fd->file_off, pinfo->fd->file_off); } if(pinfo->fd->color_filter != NULL) { color_filter_t *color_filter = pinfo->fd->color_filter; item = proto_tree_add_string(fh_tree, hf_frame_color_filter_name, tvb, 0, 0, color_filter->filter_name); PROTO_ITEM_SET_GENERATED(item); item = proto_tree_add_string(fh_tree, hf_frame_color_filter_text, tvb, 0, 0, color_filter->filter_text); PROTO_ITEM_SET_GENERATED(item); } } /* Portable Exception Handling to trap Wireshark specific exceptions like BoundsError exceptions */ TRY { #ifdef _MSC_VER /* Win32: Visual-C Structured Exception Handling (SEH) to trap hardware exceptions like memory access violations */ /* (a running debugger will be called before the except part below) */ __try { #endif if ((force_docsis_encap) && (docsis_handle)) { call_dissector(docsis_handle, tvb, pinfo, parent_tree); } else { if (!dissector_try_port(wtap_encap_dissector_table, pinfo->fd->lnk_t, tvb, pinfo, parent_tree)) { col_set_str(pinfo->cinfo, COL_PROTOCOL, "UNKNOWN"); col_add_fstr(pinfo->cinfo, COL_INFO, "WTAP_ENCAP = %u", pinfo->fd->lnk_t); call_dissector(data_handle,tvb, pinfo, parent_tree); } } #ifdef _MSC_VER } __except(TRUE /* handle all exceptions */) { switch(GetExceptionCode()) { case(STATUS_ACCESS_VIOLATION): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_ACCESS_VIOLATION: dissector accessed an invalid memory address"); break; case(STATUS_INTEGER_DIVIDE_BY_ZERO): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_INTEGER_DIVIDE_BY_ZERO: dissector tried an integer division by zero"); break; case(STATUS_STACK_OVERFLOW): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_STACK_OVERFLOW: dissector overflowed the stack (e.g. endless loop)"); /* XXX - this will have probably corrupted the stack, which makes problems later in the exception code */ break; /* XXX - add other hardware exception codes as required */ default: show_exception(tvb, pinfo, parent_tree, DissectorError, g_strdup_printf("dissector caused an unknown exception: 0x%x", GetExceptionCode())); } } #endif } CATCH(OutOfMemoryError) { RETHROW; } CATCH_ALL { show_exception(tvb, pinfo, parent_tree, EXCEPT_CODE, GET_MESSAGE); } ENDTRY; if (tree && pinfo->layer_names) { proto_item_append_string(ti, pinfo->layer_names->str); g_string_free(pinfo->layer_names, TRUE); pinfo->layer_names = NULL; } /* Call postdissectors if we have any (while trying to avoid another * TRY/CATCH) */ if (have_postdissector()) { TRY { #ifdef _MSC_VER /* Win32: Visual-C Structured Exception Handling (SEH) to trap hardware exceptions like memory access violations */ /* (a running debugger will be called before the except part below) */ __try { #endif call_all_postdissectors(tvb, pinfo, parent_tree); #ifdef _MSC_VER } __except(TRUE /* handle all exceptions */) { switch(GetExceptionCode()) { case(STATUS_ACCESS_VIOLATION): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_ACCESS_VIOLATION: dissector accessed an invalid memory address"); break; case(STATUS_INTEGER_DIVIDE_BY_ZERO): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_INTEGER_DIVIDE_BY_ZERO: dissector tried an integer division by zero"); break; case(STATUS_STACK_OVERFLOW): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_STACK_OVERFLOW: dissector overflowed the stack (e.g. endless loop)"); /* XXX - this will have probably corrupted the stack, which makes problems later in the exception code */ break; /* XXX - add other hardware exception codes as required */ default: show_exception(tvb, pinfo, parent_tree, DissectorError, g_strdup_printf("dissector caused an unknown exception: 0x%x", GetExceptionCode())); } } #endif } CATCH(OutOfMemoryError) { RETHROW; } CATCH_ALL { show_exception(tvb, pinfo, parent_tree, EXCEPT_CODE, GET_MESSAGE); } ENDTRY; } tap_queue_packet(frame_tap, pinfo, NULL); if (frame_end_routines) { g_slist_foreach(frame_end_routines, &call_frame_end_routine, NULL); g_slist_free(frame_end_routines); frame_end_routines = NULL; } }
static void dissect_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree) { proto_item *volatile ti = NULL, *comment_item; guint cap_len = 0, frame_len = 0; proto_tree *volatile tree; proto_tree *comments_tree; proto_item *item; const gchar *cap_plurality, *frame_plurality; tree=parent_tree; switch (pinfo->phdr->rec_type) { case REC_TYPE_PACKET: pinfo->current_proto = "Frame"; if (pinfo->pseudo_header != NULL) { switch (pinfo->fd->lnk_t) { case WTAP_ENCAP_WFLEET_HDLC: case WTAP_ENCAP_CHDLC_WITH_PHDR: case WTAP_ENCAP_PPP_WITH_PHDR: case WTAP_ENCAP_SDLC: case WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR: pinfo->p2p_dir = pinfo->pseudo_header->p2p.sent ? P2P_DIR_SENT : P2P_DIR_RECV; break; case WTAP_ENCAP_BLUETOOTH_HCI: pinfo->p2p_dir = pinfo->pseudo_header->bthci.sent; break; case WTAP_ENCAP_LAPB: case WTAP_ENCAP_FRELAY_WITH_PHDR: pinfo->p2p_dir = (pinfo->pseudo_header->x25.flags & FROM_DCE) ? P2P_DIR_RECV : P2P_DIR_SENT; break; case WTAP_ENCAP_ISDN: case WTAP_ENCAP_V5_EF: case WTAP_ENCAP_DPNSS: case WTAP_ENCAP_BACNET_MS_TP_WITH_PHDR: pinfo->p2p_dir = pinfo->pseudo_header->isdn.uton ? P2P_DIR_SENT : P2P_DIR_RECV; break; case WTAP_ENCAP_LINUX_LAPD: pinfo->p2p_dir = (pinfo->pseudo_header->lapd.pkttype == 3 || pinfo->pseudo_header->lapd.pkttype == 4) ? P2P_DIR_SENT : P2P_DIR_RECV; break; case WTAP_ENCAP_MTP2_WITH_PHDR: pinfo->p2p_dir = pinfo->pseudo_header->mtp2.sent ? P2P_DIR_SENT : P2P_DIR_RECV; pinfo->link_number = pinfo->pseudo_header->mtp2.link_number; pinfo->annex_a_used = pinfo->pseudo_header->mtp2.annex_a_used; break; case WTAP_ENCAP_GSM_UM: pinfo->p2p_dir = pinfo->pseudo_header->gsm_um.uplink ? P2P_DIR_SENT : P2P_DIR_RECV; break; } } break; case REC_TYPE_FT_SPECIFIC_EVENT: pinfo->current_proto = "Event"; break; case REC_TYPE_FT_SPECIFIC_REPORT: pinfo->current_proto = "Report"; break; default: g_assert_not_reached(); break; } if(pinfo->pkt_comment){ item = proto_tree_add_item(tree, proto_pkt_comment, tvb, 0, 0, ENC_NA); comments_tree = proto_item_add_subtree(item, ett_comments); comment_item = proto_tree_add_string_format(comments_tree, hf_comments_text, tvb, 0, 0, pinfo->pkt_comment, "%s", pinfo->pkt_comment); expert_add_info_format(pinfo, comment_item, &ei_comments_text, "%s", pinfo->pkt_comment); } /* if FRAME is not referenced from any filters we don't need to worry about generating any tree items. */ if(!proto_field_is_referenced(tree, proto_frame)) { tree=NULL; if(pinfo->fd->flags.has_ts) { if(pinfo->fd->abs_ts.nsecs < 0 || pinfo->fd->abs_ts.nsecs >= 1000000000) expert_add_info(pinfo, NULL, &ei_arrive_time_out_of_range); } } else { proto_tree *fh_tree; gboolean old_visible; /* Put in frame header information. */ cap_len = tvb_length(tvb); frame_len = tvb_reported_length(tvb); cap_plurality = plurality(cap_len, "", "s"); frame_plurality = plurality(frame_len, "", "s"); ti = proto_tree_add_protocol_format(tree, proto_frame, tvb, 0, tvb_captured_length(tvb), "Frame %u: %u byte%s on wire", pinfo->fd->num, frame_len, frame_plurality); if (generate_bits_field) proto_item_append_text(ti, " (%u bits)", frame_len * 8); proto_item_append_text(ti, ", %u byte%s captured", cap_len, cap_plurality); if (generate_bits_field) { proto_item_append_text(ti, " (%u bits)", cap_len * 8); } if (pinfo->phdr->presence_flags & WTAP_HAS_INTERFACE_ID) { proto_item_append_text(ti, " on interface %u", pinfo->phdr->interface_id); } if (pinfo->phdr->presence_flags & WTAP_HAS_PACK_FLAGS) { if (pinfo->phdr->pack_flags & 0x00000001) { proto_item_append_text(ti, " (inbound)"); pinfo->p2p_dir = P2P_DIR_RECV; } if (pinfo->phdr->pack_flags & 0x00000002) { proto_item_append_text(ti, " (outbound)"); pinfo->p2p_dir = P2P_DIR_SENT; } } fh_tree = proto_item_add_subtree(ti, ett_frame); if (pinfo->phdr->presence_flags & WTAP_HAS_INTERFACE_ID && proto_field_is_referenced(tree, hf_frame_interface_id)) { const char *interface_name = epan_get_interface_name(pinfo->epan, pinfo->phdr->interface_id); if (interface_name) proto_tree_add_uint_format_value(fh_tree, hf_frame_interface_id, tvb, 0, 0, pinfo->phdr->interface_id, "%u (%s)", pinfo->phdr->interface_id, interface_name); else proto_tree_add_uint(fh_tree, hf_frame_interface_id, tvb, 0, 0, pinfo->phdr->interface_id); } if (pinfo->phdr->presence_flags & WTAP_HAS_PACK_FLAGS) { proto_tree *flags_tree; proto_item *flags_item; flags_item = proto_tree_add_uint(fh_tree, hf_frame_pack_flags, tvb, 0, 0, pinfo->phdr->pack_flags); flags_tree = proto_item_add_subtree(flags_item, ett_flags); proto_tree_add_uint(flags_tree, hf_frame_pack_direction, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_uint(flags_tree, hf_frame_pack_reception_type, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_uint(flags_tree, hf_frame_pack_fcs_length, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_uint(flags_tree, hf_frame_pack_reserved, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_crc_error, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_wrong_packet_too_long_error, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_wrong_packet_too_short_error, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_wrong_inter_frame_gap_error, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_unaligned_frame_error, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_start_frame_delimiter_error, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_preamble_error, tvb, 0, 0, pinfo->phdr->pack_flags); proto_tree_add_boolean(flags_tree, hf_frame_pack_symbol_error, tvb, 0, 0, pinfo->phdr->pack_flags); } if (pinfo->phdr->rec_type == REC_TYPE_PACKET) proto_tree_add_int(fh_tree, hf_frame_wtap_encap, tvb, 0, 0, pinfo->fd->lnk_t); if (pinfo->fd->flags.has_ts) { proto_tree_add_time(fh_tree, hf_frame_arrival_time, tvb, 0, 0, &(pinfo->fd->abs_ts)); if(pinfo->fd->abs_ts.nsecs < 0 || pinfo->fd->abs_ts.nsecs >= 1000000000) { expert_add_info_format(pinfo, ti, &ei_arrive_time_out_of_range, "Arrival Time: Fractional second %09ld is invalid," " the valid range is 0-1000000000", (long) pinfo->fd->abs_ts.nsecs); } item = proto_tree_add_time(fh_tree, hf_frame_shift_offset, tvb, 0, 0, &(pinfo->fd->shift_offset)); PROTO_ITEM_SET_GENERATED(item); if(generate_epoch_time) { proto_tree_add_time(fh_tree, hf_frame_arrival_time_epoch, tvb, 0, 0, &(pinfo->fd->abs_ts)); } if (proto_field_is_referenced(tree, hf_frame_time_delta)) { nstime_t del_cap_ts; frame_delta_abs_time(pinfo->epan, pinfo->fd, pinfo->fd->num - 1, &del_cap_ts); item = proto_tree_add_time(fh_tree, hf_frame_time_delta, tvb, 0, 0, &(del_cap_ts)); PROTO_ITEM_SET_GENERATED(item); } if (proto_field_is_referenced(tree, hf_frame_time_delta_displayed)) { nstime_t del_dis_ts; frame_delta_abs_time(pinfo->epan, pinfo->fd, pinfo->fd->prev_dis_num, &del_dis_ts); item = proto_tree_add_time(fh_tree, hf_frame_time_delta_displayed, tvb, 0, 0, &(del_dis_ts)); PROTO_ITEM_SET_GENERATED(item); } item = proto_tree_add_time(fh_tree, hf_frame_time_relative, tvb, 0, 0, &(pinfo->rel_ts)); PROTO_ITEM_SET_GENERATED(item); if(pinfo->fd->flags.ref_time){ ti = proto_tree_add_item(fh_tree, hf_frame_time_reference, tvb, 0, 0, ENC_NA); PROTO_ITEM_SET_GENERATED(ti); } } proto_tree_add_uint(fh_tree, hf_frame_number, tvb, 0, 0, pinfo->fd->num); proto_tree_add_uint_format(fh_tree, hf_frame_len, tvb, 0, 0, frame_len, "Frame Length: %u byte%s (%u bits)", frame_len, frame_plurality, frame_len * 8); proto_tree_add_uint_format(fh_tree, hf_frame_capture_len, tvb, 0, 0, cap_len, "Capture Length: %u byte%s (%u bits)", cap_len, cap_plurality, cap_len * 8); if (generate_md5_hash) { const guint8 *cp; md5_state_t md_ctx; md5_byte_t digest[16]; const gchar *digest_string; cp = tvb_get_ptr(tvb, 0, cap_len); md5_init(&md_ctx); md5_append(&md_ctx, cp, cap_len); md5_finish(&md_ctx, digest); digest_string = bytestring_to_str(wmem_packet_scope(), digest, 16, '\0'); ti = proto_tree_add_string(fh_tree, hf_frame_md5_hash, tvb, 0, 0, digest_string); PROTO_ITEM_SET_GENERATED(ti); } ti = proto_tree_add_boolean(fh_tree, hf_frame_marked, tvb, 0, 0,pinfo->fd->flags.marked); PROTO_ITEM_SET_GENERATED(ti); ti = proto_tree_add_boolean(fh_tree, hf_frame_ignored, tvb, 0, 0,pinfo->fd->flags.ignored); PROTO_ITEM_SET_GENERATED(ti); if(proto_field_is_referenced(tree, hf_frame_protocols)) { /* we are going to be using proto_item_append_string() on * hf_frame_protocols, and we must therefore disable the * TRY_TO_FAKE_THIS_ITEM() optimisation for the tree by * setting it as visible. * * See proto.h for details. */ old_visible = proto_tree_set_visible(fh_tree, TRUE); ti = proto_tree_add_string(fh_tree, hf_frame_protocols, tvb, 0, 0, ""); PROTO_ITEM_SET_GENERATED(ti); proto_tree_set_visible(fh_tree, old_visible); } /* Check for existences of P2P pseudo header */ if (pinfo->p2p_dir != P2P_DIR_UNKNOWN) { proto_tree_add_int(fh_tree, hf_frame_p2p_dir, tvb, 0, 0, pinfo->p2p_dir); } /* Check for existences of MTP2 link number */ if ((pinfo->pseudo_header != NULL ) && (pinfo->fd->lnk_t == WTAP_ENCAP_MTP2_WITH_PHDR)) { proto_tree_add_uint(fh_tree, hf_link_number, tvb, 0, 0, pinfo->link_number); } if (show_file_off) { proto_tree_add_int64_format_value(fh_tree, hf_frame_file_off, tvb, 0, 0, pinfo->fd->file_off, "%" G_GINT64_MODIFIER "d (0x%" G_GINT64_MODIFIER "x)", pinfo->fd->file_off, pinfo->fd->file_off); } if(pinfo->fd->color_filter != NULL) { const color_filter_t *color_filter = (const color_filter_t *)pinfo->fd->color_filter; item = proto_tree_add_string(fh_tree, hf_frame_color_filter_name, tvb, 0, 0, color_filter->filter_name); PROTO_ITEM_SET_GENERATED(item); item = proto_tree_add_string(fh_tree, hf_frame_color_filter_text, tvb, 0, 0, color_filter->filter_text); PROTO_ITEM_SET_GENERATED(item); } } if (pinfo->fd->flags.ignored) { /* Ignored package, stop handling here */ col_set_str(pinfo->cinfo, COL_INFO, "<Ignored>"); proto_tree_add_text (tree, tvb, 0, 0, "This frame is marked as ignored"); return; } /* Portable Exception Handling to trap Wireshark specific exceptions like BoundsError exceptions */ TRY { #ifdef _MSC_VER /* Win32: Visual-C Structured Exception Handling (SEH) to trap hardware exceptions like memory access violations. (a running debugger will be called before the except part below) */ /* Note: A Windows "exceptional exception" may leave the kazlib's (Portable Exception Handling) stack in an inconsistent state thus causing a crash at some point in the handling of the exception. See: https://www.wireshark.org/lists/wireshark-dev/200704/msg00243.html */ __try { #endif switch (pinfo->phdr->rec_type) { case REC_TYPE_PACKET: if ((force_docsis_encap) && (docsis_handle)) { call_dissector(docsis_handle, tvb, pinfo, parent_tree); } else { if (!dissector_try_uint(wtap_encap_dissector_table, pinfo->fd->lnk_t, tvb, pinfo, parent_tree)) { col_set_str(pinfo->cinfo, COL_PROTOCOL, "UNKNOWN"); col_add_fstr(pinfo->cinfo, COL_INFO, "WTAP_ENCAP = %d", pinfo->fd->lnk_t); call_dissector(data_handle,tvb, pinfo, parent_tree); } } break; case REC_TYPE_FT_SPECIFIC_EVENT: case REC_TYPE_FT_SPECIFIC_REPORT: if (!dissector_try_uint(wtap_fts_rec_dissector_table, pinfo->file_type_subtype, tvb, pinfo, parent_tree)) { col_set_str(pinfo->cinfo, COL_PROTOCOL, "UNKNOWN"); col_add_fstr(pinfo->cinfo, COL_INFO, "WTAP_ENCAP = %d", pinfo->file_type_subtype); call_dissector(data_handle,tvb, pinfo, parent_tree); } break; } #ifdef _MSC_VER } __except(EXCEPTION_EXECUTE_HANDLER /* handle all exceptions */) { switch(GetExceptionCode()) { case(STATUS_ACCESS_VIOLATION): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_ACCESS_VIOLATION: dissector accessed an invalid memory address"); break; case(STATUS_INTEGER_DIVIDE_BY_ZERO): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_INTEGER_DIVIDE_BY_ZERO: dissector tried an integer division by zero"); break; case(STATUS_STACK_OVERFLOW): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_STACK_OVERFLOW: dissector overflowed the stack (e.g. endless loop)"); /* XXX - this will have probably corrupted the stack, which makes problems later in the exception code */ break; /* XXX - add other hardware exception codes as required */ default: show_exception(tvb, pinfo, parent_tree, DissectorError, g_strdup_printf("dissector caused an unknown exception: 0x%x", GetExceptionCode())); } } #endif } CATCH_BOUNDS_AND_DISSECTOR_ERRORS { show_exception(tvb, pinfo, parent_tree, EXCEPT_CODE, GET_MESSAGE); } ENDTRY; if(proto_field_is_referenced(tree, hf_frame_protocols)) { wmem_strbuf_t *val = wmem_strbuf_sized_new(wmem_packet_scope(), 128, 0); wmem_list_frame_t *frame; /* skip the first entry, it's always the "frame" protocol */ frame = wmem_list_frame_next(wmem_list_head(pinfo->layers)); if (frame) { wmem_strbuf_append(val, proto_get_protocol_filter_name(GPOINTER_TO_UINT(wmem_list_frame_data(frame)))); frame = wmem_list_frame_next(frame); } while (frame) { wmem_strbuf_append_c(val, ':'); wmem_strbuf_append(val, proto_get_protocol_filter_name(GPOINTER_TO_UINT(wmem_list_frame_data(frame)))); frame = wmem_list_frame_next(frame); } proto_item_append_string(ti, wmem_strbuf_get_str(val)); } /* Call postdissectors if we have any (while trying to avoid another * TRY/CATCH) */ if (have_postdissector()) { TRY { #ifdef _MSC_VER /* Win32: Visual-C Structured Exception Handling (SEH) to trap hardware exceptions like memory access violations */ /* (a running debugger will be called before the except part below) */ /* Note: A Windows "exceptional exception" may leave the kazlib's (Portable Exception Handling) stack in an inconsistent state thus causing a crash at some point in the handling of the exception. See: https://www.wireshark.org/lists/wireshark-dev/200704/msg00243.html */ __try { #endif call_all_postdissectors(tvb, pinfo, parent_tree); #ifdef _MSC_VER } __except(EXCEPTION_EXECUTE_HANDLER /* handle all exceptions */) { switch(GetExceptionCode()) { case(STATUS_ACCESS_VIOLATION): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_ACCESS_VIOLATION: dissector accessed an invalid memory address"); break; case(STATUS_INTEGER_DIVIDE_BY_ZERO): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_INTEGER_DIVIDE_BY_ZERO: dissector tried an integer division by zero"); break; case(STATUS_STACK_OVERFLOW): show_exception(tvb, pinfo, parent_tree, DissectorError, "STATUS_STACK_OVERFLOW: dissector overflowed the stack (e.g. endless loop)"); /* XXX - this will have probably corrupted the stack, which makes problems later in the exception code */ break; /* XXX - add other hardware exception codes as required */ default: show_exception(tvb, pinfo, parent_tree, DissectorError, g_strdup_printf("dissector caused an unknown exception: 0x%x", GetExceptionCode())); } } #endif } CATCH_BOUNDS_AND_DISSECTOR_ERRORS { show_exception(tvb, pinfo, parent_tree, EXCEPT_CODE, GET_MESSAGE); } ENDTRY; } tap_queue_packet(frame_tap, pinfo, NULL); if (pinfo->frame_end_routines) { g_slist_foreach(pinfo->frame_end_routines, &call_frame_end_routine, NULL); g_slist_free(pinfo->frame_end_routines); pinfo->frame_end_routines = NULL; } }
dissector_table_t subdissector_table; int hf; col_set_str(pinfo->cinfo, COL_PROTOCOL, "IEEE802a"); col_clear(pinfo->cinfo, COL_INFO); ti = proto_tree_add_item(tree, proto_ieee802a, tvb, 0, 5, ENC_NA); ieee802a_tree = proto_item_add_subtree(ti, ett_ieee802a); tvb_memcpy(tvb, oui, 0, 3); oui32 = oui[0] << 16 | oui[1] << 8 | oui[2]; manuf = get_manuf_name_if_known(oui); pid = tvb_get_ntohs(tvb, 3); col_add_fstr(pinfo->cinfo, COL_INFO, "OUI %s (%s), PID 0x%04X", bytestring_to_str(wmem_packet_scope(), oui, 3, ':'), manuf ? manuf : "Unknown", pid); proto_tree_add_uint_format_value(ieee802a_tree, hf_ieee802a_oui, tvb, 0, 3, oui32, "%s (%s)", bytestring_to_str(wmem_packet_scope(), oui, 3, ':'), manuf ? manuf : "Unknown"); /* * Do we have information for this OUI? */ if (oui_info_table != NULL && (oui_info = (oui_info_t *)g_hash_table_lookup(oui_info_table, GUINT_TO_POINTER(oui32))) != NULL) { /* * Yes - use it. */
char * ether_to_str(uint8_t *ad) { return bytestring_to_str(ad, 6, ':'); }
static void dissect_ieee802a(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) { proto_tree *ieee802a_tree; proto_item *ti; tvbuff_t *next_tvb; const gchar *manuf; guint8 oui[3]; guint32 oui32; guint16 pid; oui_info_t *oui_info; dissector_table_t subdissector_table; int hf; col_set_str(pinfo->cinfo, COL_PROTOCOL, "IEEE802a"); col_clear(pinfo->cinfo, COL_INFO); ti = proto_tree_add_item(tree, proto_ieee802a, tvb, 0, 5, ENC_NA); ieee802a_tree = proto_item_add_subtree(ti, ett_ieee802a); tvb_memcpy(tvb, oui, 0, 3); oui32 = oui[0] << 16 | oui[1] << 8 | oui[2]; manuf = get_manuf_name_if_known(oui); pid = tvb_get_ntohs(tvb, 3); col_add_fstr(pinfo->cinfo, COL_INFO, "OUI %s (%s), PID 0x%04X", bytestring_to_str(wmem_packet_scope(), oui, 3, ':'), manuf ? manuf : "Unknown", pid); proto_tree_add_uint_format_value(ieee802a_tree, hf_ieee802a_oui, tvb, 0, 3, oui32, "%s (%s)", bytestring_to_str(wmem_packet_scope(), oui, 3, ':'), manuf ? manuf : "Unknown"); /* * Do we have information for this OUI? */ if (oui_info_table != NULL && (oui_info = (oui_info_t *)g_hash_table_lookup(oui_info_table, GUINT_TO_POINTER(oui32))) != NULL) { /* * Yes - use it. */ hf = *oui_info->field_info->p_id; subdissector_table = oui_info->table; } else { /* * No, use hf_ieee802a_pid for the PID and just dissect * the payload as data. */ hf = hf_ieee802a_pid; subdissector_table = NULL; } if (tree) proto_tree_add_uint(ieee802a_tree, hf, tvb, 3, 2, pid); next_tvb = tvb_new_subset_remaining(tvb, 5); if (subdissector_table != NULL) { /* do lookup with the subdissector table */ if (dissector_try_uint(subdissector_table, pid, next_tvb, pinfo, tree)) return; } call_dissector(data_handle, next_tvb, pinfo, tree); }