610 lines
17 KiB
Text
610 lines
17 KiB
Text
/*
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* We don't use input, so don't generate code for it.
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*/
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%option noinput
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/*
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* We don't use unput, so don't generate code for it.
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*/
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%option nounput
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/*
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* We don't read from the terminal.
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*/
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%option never-interactive
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/*
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* The language we're scanning is case-insensitive.
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*/
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%option caseless
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/*
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* Prefix scanner routines with "Radius" rather than "yy", so this scanner
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* can coexist with other scanners.
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*/
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%option prefix="Radius"
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%option outfile="radius_dict.c"
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%{
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/* radius_dict.l
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*
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* RADIUS dictionary parser
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <epan/packet.h>
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#include <epan/dissectors/packet-radius.h>
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#include "radius_dict_lex.h"
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#include <wsutil/file_util.h>
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#ifdef _WIN32
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/* disable Windows VC compiler warning "signed/unsigned mismatch" associated */
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/* with YY_INPUT code generated by flex versions such as 2.5.35. */
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#pragma warning (disable:4018)
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#endif
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#define ECHO
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#define MAX_INCLUDE_DEPTH 10
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static void add_vendor(const gchar* name, guint32 id, guint type_octets, guint length_octets, gboolean has_flags);
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static void add_value(const gchar* attrib_name,const gchar* repr, guint32 value);
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static void add_tlv(const gchar* name, const gchar* code, radius_attr_dissector_t type, const gchar* attr);
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static void add_attribute(const gchar*,const gchar*, radius_attr_dissector_t,const gchar*, guint, gboolean, const gchar*);
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static YY_BUFFER_STATE include_stack[10];
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static int include_stack_ptr = 0;
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static radius_dictionary_t* dict = NULL;
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static GHashTable* value_strings = NULL; /* GArray(value_string) by attribute name */
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static gchar* attr_name = NULL;
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static gchar* attr_id = NULL;
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static radius_attr_dissector_t* attr_type = NULL;
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static gchar* attr_vendor = NULL;
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static gchar* vendor_name = NULL;
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static guint32 vendor_id = 0;
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static guint vendor_type_octets = 1;
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static guint vendor_length_octets = 1;
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static gboolean vendor_has_flags = FALSE;
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static gchar* value_repr = NULL;
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static guint encrypted = 0;
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static gboolean has_tag = FALSE;
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static gchar* current_vendor = NULL;
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static gchar* current_attr = NULL;
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static GString* error = NULL;
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static gchar* directory = NULL;
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static int linenums[] = {1,1,1,1,1,1,1,1,1,1};
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static gchar* fullpaths[] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
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%}
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/* Note: FreeRadius allows VENDOR, ATTRIBUTE and VALUE names to contain any non-blank character.
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* Using a negated "blank character class" pattern below for those names fails for some reason
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* so for now the patterns for each name type include those characters found for the corresponding
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* name types in the FreeRadius dictionaries.
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*/
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%START WS_OUT VENDOR VENDOR_W_NAME ATTR ATTR_W_NAME ATTR_W_ID ATTR_W_TYPE ATTR_W_VENDOR VALUE VALUE_W_ATTR VALUE_W_NAME INCLUDE JUNK BEGIN_VENDOR END_VENDOR VENDOR_W_ID VENDOR_W_FORMAT VENDOR_W_TYPE_OCTETS VENDOR_W_LENGTH_OCTETS VENDOR_W_CONTINUATION BEGIN_TLV END_TLV
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%%
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[:blank:] ;
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#[^\n]* ;
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<JUNK>.*\qn ;
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<WS_OUT>VENDOR { BEGIN VENDOR; }
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<WS_OUT>ATTRIBUTE { BEGIN ATTR; }
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<WS_OUT>VALUE { BEGIN VALUE; }
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<WS_OUT>\$INCLUDE { BEGIN INCLUDE; }
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<WS_OUT>BEGIN-VENDOR { BEGIN BEGIN_VENDOR; }
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<WS_OUT>END-VENDOR { BEGIN END_VENDOR; }
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<WS_OUT>BEGIN-TLV { BEGIN BEGIN_TLV; }
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<WS_OUT>END-TLV { BEGIN END_TLV; }
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<BEGIN_VENDOR>[0-9a-z_-]+ {
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if (current_vendor) {
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g_free(current_vendor);
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}
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current_vendor = g_strdup(yytext);
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BEGIN WS_OUT;
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}
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<END_VENDOR>[^\n]* {
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if (current_vendor) {
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g_free(current_vendor);
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current_vendor = NULL;
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}
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BEGIN WS_OUT;
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}
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<BEGIN_TLV>[0-9a-z_-]+ {
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if (current_attr) {
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g_free(current_attr);
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}
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current_attr = g_strdup(yytext);
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BEGIN WS_OUT;
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}
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<END_TLV>[^\n]* {
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if (current_attr) {
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g_free(current_attr);
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current_attr = NULL;
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}
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BEGIN WS_OUT;
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}
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<VENDOR>[0-9a-z_-]+ {
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vendor_name = g_strdup(yytext);
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vendor_type_octets = 1;
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vendor_length_octets = 1;
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vendor_has_flags = FALSE;
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BEGIN VENDOR_W_NAME;
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}
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<VENDOR_W_NAME>[0-9]+ {
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vendor_id = (guint32) strtoul(yytext,NULL,10);
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BEGIN VENDOR_W_ID;
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}
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<VENDOR_W_NAME>0x[0-9a-f]+ {
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vendor_id = (guint32) strtoul(yytext,NULL,16);
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BEGIN VENDOR_W_ID;
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}
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<VENDOR_W_ID>format= {
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BEGIN VENDOR_W_FORMAT;
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}
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<VENDOR_W_FORMAT>[124] {
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vendor_type_octets = (guint) strtoul(yytext,NULL,10);
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BEGIN VENDOR_W_TYPE_OCTETS;
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}
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<VENDOR_W_TYPE_OCTETS>,[012] {
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vendor_length_octets = (guint) strtoul(yytext+1,NULL,10);
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BEGIN VENDOR_W_LENGTH_OCTETS;
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}
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<VENDOR_W_LENGTH_OCTETS>,c {
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vendor_has_flags = TRUE;
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BEGIN VENDOR_W_CONTINUATION;
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}
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<VENDOR_W_FORMAT>\n |
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<VENDOR_W_TYPE_OCTETS>\n |
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<VENDOR_W_LENGTH_OCTETS>\n |
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<VENDOR_W_CONTINUATION>\n |
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<VENDOR_W_ID>\n {
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add_vendor(vendor_name, vendor_id, vendor_type_octets, vendor_length_octets, vendor_has_flags);
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g_free(vendor_name);
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BEGIN WS_OUT;
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}
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<ATTR>[0-9a-z_/.-]+ { attr_name = g_strdup(yytext); encrypted = 0; has_tag = FALSE; BEGIN ATTR_W_NAME; }
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<ATTR_W_NAME>[0-9]+ { attr_id = g_strdup(yytext); BEGIN ATTR_W_ID;}
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<ATTR_W_NAME>0x[0-9a-f]+ { attr_id = g_strdup_printf("%u",(int)strtoul(yytext,NULL,16)); BEGIN ATTR_W_ID;}
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<ATTR_W_ID>integer { attr_type = radius_integer; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>string { attr_type = radius_string; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>octets { attr_type = radius_octets; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>ipaddr { attr_type = radius_ipaddr; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>ipv6addr { attr_type = radius_ipv6addr; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>ipv6prefix { attr_type = radius_ipv6prefix; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>ipxnet { attr_type = radius_ipxnet; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>date { attr_type = radius_date; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>abinary { attr_type = radius_abinary; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>ether { attr_type = radius_ether; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>ifid { attr_type = radius_ifid; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>byte { attr_type = radius_integer; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>short { attr_type = radius_integer; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>signed { attr_type = radius_signed; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>combo-ip { attr_type = radius_combo_ip; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>tlv { attr_type = radius_tlv; BEGIN ATTR_W_TYPE; }
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<ATTR_W_ID>[0-9a-z_-]+ { attr_type = radius_octets; BEGIN ATTR_W_TYPE; }
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<ATTR_W_TYPE>has_tag[,]? { has_tag = TRUE; }
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<ATTR_W_TYPE>encrypt=[123][,]? { encrypted = (guint) strtoul(yytext+8,NULL,10); }
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<ATTR_W_TYPE>[0-9a-z_-]+=([^\n]*) ;
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<ATTR_W_TYPE>[0-9a-z_-]+ {
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attr_vendor = g_strdup(yytext);
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add_attribute(attr_name,attr_id,attr_type,attr_vendor,encrypted,has_tag,current_attr);
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g_free(attr_id);
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g_free(attr_vendor);
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g_free(attr_name);
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attr_id = NULL;
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attr_vendor = NULL;
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attr_name = NULL;
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BEGIN WS_OUT;
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}
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<ATTR_W_TYPE>\n {
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add_attribute(attr_name,attr_id,attr_type,current_vendor,encrypted,has_tag,current_attr);
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g_free(attr_id);
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g_free(attr_name);
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linenums[include_stack_ptr]++;
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has_tag = FALSE;
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encrypted=FALSE;
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BEGIN WS_OUT;
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}
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<ATTR_W_VENDOR>\n {
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add_attribute(attr_name,attr_id,attr_type,attr_vendor,encrypted,has_tag,current_attr);
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g_free(attr_id);
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g_free(attr_vendor);
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g_free(attr_name);
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linenums[include_stack_ptr]++;
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BEGIN WS_OUT;
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};
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<VALUE>[0-9a-z_/-]+ { attr_name = g_strdup(yytext); BEGIN VALUE_W_ATTR; }
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<VALUE_W_ATTR>[^[:blank:]]+ { value_repr = g_strdup(yytext); BEGIN VALUE_W_NAME; }
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<VALUE_W_NAME>[0-9]+ { add_value(attr_name,value_repr, (guint32) strtoul(yytext,NULL,10)); g_free(attr_name); g_free(value_repr); BEGIN WS_OUT;}
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<VALUE_W_NAME>0x[0-9a-f]+ { add_value(attr_name,value_repr, (guint32) strtoul(yytext,NULL,16)); g_free(attr_name); g_free(value_repr); BEGIN WS_OUT;}
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<INCLUDE>[^[:blank:]\n]+ {
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if ( include_stack_ptr >= MAX_INCLUDE_DEPTH ) {
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g_string_append_printf(error, "$INCLUDE files nested to deeply\n");
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yyterminate();
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}
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include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
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fullpaths[include_stack_ptr] = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s",
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directory,yytext);
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yyin = ws_fopen( fullpaths[include_stack_ptr], "r" );
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if (!yyin) {
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if (errno) {
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g_string_append_printf(error,
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"Could not open file: '%s', error: %s\n",
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fullpaths[include_stack_ptr],
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g_strerror(errno) );
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} else {
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g_string_append_printf(error,
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"Could not open file: '%s', no errno\n",
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fullpaths[include_stack_ptr]);
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}
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g_free(fullpaths[include_stack_ptr]);
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fullpaths[include_stack_ptr] = NULL;
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include_stack_ptr--;
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} else {
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linenums[include_stack_ptr] = 1;
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yy_switch_to_buffer(yy_create_buffer( yyin, YY_BUF_SIZE ) );
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}
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BEGIN WS_OUT;
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}
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<<EOF>> {
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fclose(yyin);
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yyin = NULL;
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if ( --include_stack_ptr < 0 ) {
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yyterminate();
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} else {
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g_free(fullpaths[include_stack_ptr+1]);
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fullpaths[include_stack_ptr+1] = NULL;
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yy_delete_buffer( YY_CURRENT_BUFFER );
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yy_switch_to_buffer(include_stack[include_stack_ptr]);
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}
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BEGIN WS_OUT;
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}
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\n { linenums[include_stack_ptr]++; BEGIN WS_OUT; }
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%%
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static void add_vendor(const gchar* name, guint32 id, guint type_octets, guint length_octets, gboolean has_flags) {
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radius_vendor_info_t* v;
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v = (radius_vendor_info_t *)g_hash_table_lookup(dict->vendors_by_id, GUINT_TO_POINTER(id));
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if (!v) {
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v = g_new(radius_vendor_info_t,1);
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v->attrs_by_id = g_hash_table_new(g_direct_hash,g_direct_equal);
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v->code = id;
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v->ett = -1;
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v->name = NULL;
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}
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/* Assume that the dictionary knows the 'ground truth' about the
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* type/length/has_flags information and thus allow the dictionary to
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* overwrite these values even for vendors that have already been loaded.
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*/
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v->type_octets = type_octets;
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v->length_octets = length_octets;
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v->has_flags = has_flags;
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if (v->name)
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g_free((gpointer) v->name);
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v->name = g_strdup(name);
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g_hash_table_insert(dict->vendors_by_id,GUINT_TO_POINTER(v->code),v);
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g_hash_table_insert(dict->vendors_by_name, (gpointer) v->name, v);
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}
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static void add_attribute(const gchar* name, const gchar* codestr, radius_attr_dissector_t type, const gchar* vendor, guint encrypted_flag, gboolean tagged, const gchar* attr) {
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radius_attr_info_t* a;
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GHashTable* by_id;
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guint32 code;
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const gchar *tmpName = NULL;
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if (attr){
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add_tlv(name, codestr, type, attr);
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return;
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}
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if (vendor) {
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radius_vendor_info_t* v;
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v = (radius_vendor_info_t *)g_hash_table_lookup(dict->vendors_by_name,vendor);
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if (! v) {
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g_string_append_printf(error, "Vendor: '%s', does not exist in %s:%i \n", vendor, fullpaths[include_stack_ptr], linenums[include_stack_ptr] );
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BEGIN JUNK;
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return;
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} else {
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by_id = v->attrs_by_id;
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}
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} else {
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by_id = dict->attrs_by_id;
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}
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code= (guint32) strtoul(codestr, NULL, 10);
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a=(radius_attr_info_t*)g_hash_table_lookup(by_id, GUINT_TO_POINTER(code));
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if (!a) {
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a = g_new(radius_attr_info_t,1);
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a->name = NULL;
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a->dissector = NULL;
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}
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a->code = code;
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a->encrypt = encrypted_flag;
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a->tagged = tagged;
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a->type = type;
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a->vs = NULL;
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a->hf = -1;
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a->hf_alt = -1;
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a->hf_tag = -1;
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a->hf_len = -1;
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a->ett = -1;
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a->tlvs_by_id = NULL;
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if (a->name) {
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tmpName = a->name;
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}
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a->name = g_strdup(name);
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g_hash_table_insert(by_id, GUINT_TO_POINTER(code),a);
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g_hash_table_insert(dict->attrs_by_name,(gpointer) (a->name),a);
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/* Don't free the old name until after the hash_table ops, since it
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seems to end up being used in there somewhere, causing valgrind
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errors. https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7803 */
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if (tmpName) {
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g_free((gpointer) tmpName);
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}
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}
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static void add_tlv(const gchar* name, const gchar* codestr, radius_attr_dissector_t type, const gchar* attr) {
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radius_attr_info_t* a;
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radius_attr_info_t* s;
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guint32 code;
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a = (radius_attr_info_t*)g_hash_table_lookup(dict->attrs_by_name, attr);
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if (! a) {
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g_string_append_printf(error, "Attr: '%s', does not exist in %s:%i \n", attr, fullpaths[include_stack_ptr], linenums[include_stack_ptr]);
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BEGIN JUNK;
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return;
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}
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if (type == radius_tlv) {
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g_string_append_printf(error, "sub-TLV: '%s', sub-TLV's type is specified as tlv in %s:%i \n", name, fullpaths[include_stack_ptr], linenums[include_stack_ptr]);
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BEGIN JUNK;
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return;
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}
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if (! a->tlvs_by_id) {
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a->tlvs_by_id = g_hash_table_new(g_direct_hash,g_direct_equal);
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}
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code = (guint32) strtoul(codestr, NULL, 10);
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s = (radius_attr_info_t*)g_hash_table_lookup(a->tlvs_by_id, GUINT_TO_POINTER(code));
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if (!s) {
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s = g_new(radius_attr_info_t,1);
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s->name = NULL;
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s->dissector = NULL;
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}
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s->code = code;
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s->type = type;
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|
s->encrypt = FALSE;
|
|
s->tagged = FALSE;
|
|
s->dissector = NULL;
|
|
s->vs = NULL;
|
|
s->hf = -1;
|
|
s->hf_alt = -1;
|
|
s->hf_tag = -1;
|
|
s->hf_len = -1;
|
|
s->ett = -1;
|
|
s->tlvs_by_id = NULL;
|
|
|
|
if (s->name)
|
|
g_free((gpointer) s->name);
|
|
s->name = g_strdup(name);
|
|
|
|
g_hash_table_insert(a->tlvs_by_id,GUINT_TO_POINTER(s->code),s);
|
|
g_hash_table_insert(dict->tlvs_by_name,(gpointer) (s->name),s);
|
|
}
|
|
|
|
void add_value(const gchar* attrib_name, const gchar* repr, guint32 value) {
|
|
value_string v;
|
|
GArray* a = (GArray*)g_hash_table_lookup(value_strings,attrib_name);
|
|
|
|
if (! a) {
|
|
a = g_array_new(TRUE,TRUE,sizeof(value_string));
|
|
g_hash_table_insert(value_strings,g_strdup(attrib_name),a);
|
|
}
|
|
|
|
v.value = value;
|
|
v.strptr = g_strdup(repr);
|
|
|
|
g_array_append_val(a,v);
|
|
}
|
|
|
|
static void setup_tlvs(gpointer k _U_, gpointer v, gpointer p _U_) {
|
|
radius_attr_info_t* s = (radius_attr_info_t*)v;
|
|
gpointer key;
|
|
|
|
union {
|
|
GArray* a;
|
|
gpointer p;
|
|
} vs;
|
|
|
|
if (g_hash_table_lookup_extended(value_strings, s->name, &key, &vs.p)) {
|
|
s->vs = (value_string*)(void *)vs.a->data;
|
|
g_array_free(vs.a, FALSE);
|
|
g_hash_table_remove(value_strings, key);
|
|
g_free(key);
|
|
}
|
|
}
|
|
|
|
static void setup_attrs(gpointer k _U_, gpointer v, gpointer p _U_) {
|
|
radius_attr_info_t* a = (radius_attr_info_t*)v;
|
|
gpointer key;
|
|
|
|
union {
|
|
GArray* a;
|
|
gpointer p;
|
|
} vs;
|
|
|
|
if (g_hash_table_lookup_extended(value_strings,a->name,&key,&vs.p) ) {
|
|
a->vs = (value_string*)(void *)vs.a->data;
|
|
g_array_free(vs.a,FALSE);
|
|
g_hash_table_remove(value_strings,key);
|
|
g_free(key);
|
|
}
|
|
|
|
if (a->tlvs_by_id) {
|
|
g_hash_table_foreach(a->tlvs_by_id, setup_tlvs, p);
|
|
}
|
|
}
|
|
|
|
static void setup_vendors(gpointer k _U_, gpointer v, gpointer p) {
|
|
radius_vendor_info_t* vnd = (radius_vendor_info_t*)v;
|
|
|
|
g_hash_table_foreach(vnd->attrs_by_id,setup_attrs,p);
|
|
}
|
|
|
|
static gboolean destroy_value_strings(gpointer k, gpointer v, gpointer p _U_) {
|
|
value_string* vs = (value_string*)(void *)(((GArray*)v)->data);
|
|
|
|
g_free(k);
|
|
|
|
for (;vs->strptr;vs++) {
|
|
g_free((void*)vs->strptr);
|
|
}
|
|
|
|
g_array_free((GArray*)v,TRUE);
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean radius_load_dictionary (radius_dictionary_t* d, gchar* dir, const gchar* filename, gchar** err_str) {
|
|
int i;
|
|
|
|
dict = d;
|
|
directory = dir;
|
|
|
|
fullpaths[include_stack_ptr] = g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s",
|
|
directory,filename);
|
|
|
|
error = g_string_new("");
|
|
|
|
yyin = ws_fopen(fullpaths[include_stack_ptr],"r");
|
|
|
|
if (!yyin) {
|
|
g_string_append_printf(error, "Could not open file: '%s', error: %s\n", fullpaths[include_stack_ptr], g_strerror(errno) );
|
|
g_free(fullpaths[include_stack_ptr]);
|
|
*err_str = error->str;
|
|
g_string_free(error,FALSE);
|
|
return FALSE;
|
|
}
|
|
|
|
value_strings = g_hash_table_new(g_str_hash,g_str_equal);
|
|
|
|
BEGIN WS_OUT;
|
|
|
|
yylex();
|
|
|
|
if (yyin != NULL) fclose(yyin);
|
|
yyin = NULL;
|
|
|
|
for (i=0; i < 10; i++) {
|
|
if (fullpaths[i]) g_free(fullpaths[i]);
|
|
}
|
|
|
|
g_hash_table_foreach(dict->attrs_by_id,setup_attrs,NULL);
|
|
g_hash_table_foreach(dict->vendors_by_id,setup_vendors,NULL);
|
|
g_hash_table_foreach_remove(value_strings,destroy_value_strings,NULL);
|
|
|
|
if (error->len > 0) {
|
|
*err_str = error->str;
|
|
g_string_free(error,FALSE);
|
|
return FALSE;
|
|
} else {
|
|
*err_str = NULL;
|
|
g_string_free(error,TRUE);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We want to stop processing when we get to the end of the input.
|
|
* (%option noyywrap is not used because if used then
|
|
* some flex versions (eg: 2.5.35) generate code which causes
|
|
* warnings by the Windows VC compiler).
|
|
*/
|
|
|
|
int yywrap(void) {
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* 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:
|
|
*/
|