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wireshark/epan/radius_dict.l
Guy Harris a997ee591b Add a new "ipxnet" type for the RADIUS dictionary, for IPX network 
numbers.  (Currently, we don't have any dictionary entries with that
type, although we have an attribute with special code to handle it that
uses that type.)

Specially handle Framed-IP-Address, Login-IP-Host, and
Framed-IPX-Network, so that the special values are displayed specially.

Clean up indentation.

Don't specify a number base for IPv4 or IPv6 addresses; the number base
is ignored.

svn path=/trunk/; revision=16008
2005-09-26 08:48:19 +00:00

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%option noyywrap
%option nounput
%option never-interactive
%option prefix="Radius"
%option caseless
%option outfile="radius_dict.c"
%{
/* packet-radius.c
*
* RADIUS dictionary parser
*
* $Id$
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <epan/packet.h>
#include <epan/dissectors/packet-radius.h>
#define DIR_SEPARATOR '/'
#define ECHO
#define MAX_INCLUDE_DEPTH 10
void add_vendor(const gchar* name, guint32 vendor_id);
void add_value(const gchar* attrib_name,const gchar* value_repr, long value);
void add_attribute(const gchar*,const gchar*, radius_attr_dissector_t,const gchar*, gboolean, gboolean);
static YY_BUFFER_STATE include_stack[10];
static int include_stack_ptr = 0;
static radius_dictionary_t* dict = NULL;
static GHashTable* value_strings = NULL; /* GArray(value_string) by attribute name */
static gchar* attr_name = NULL;
static gchar* attr_id = NULL;
static radius_attr_dissector_t* attr_type = NULL;
static gchar* attr_vendor = NULL;
static gchar* vendor_name = NULL;
static gchar* value_repr = NULL;
static gboolean encrypted = FALSE;
static gboolean has_tag = FALSE;
static gchar* current_vendor = NULL;
static GString* error = NULL;
static gchar* directory = NULL;
static int linenums[] = {1,1,1,1,1,1,1,1,1,1};
static gchar* fullpaths[] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
%}
%START 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
%%
[:blank:] ;
#[^\n]* ;
<JUNK>.*\qn ;
<OUT>VENDOR { BEGIN VENDOR; }
<OUT>ATTRIBUTE { BEGIN ATTR; }
<OUT>VALUE { BEGIN VALUE; }
<OUT>\$INCLUDE { BEGIN INCLUDE; }
<OUT>BEGIN-VENDOR { BEGIN BEGIN_VENDOR; }
<OUT>END-VENDOR { BEGIN END_VENDOR; }
<BEGIN_VENDOR>[0-9a-z_-]+ {
if (current_vendor) {
g_free(current_vendor);
}
current_vendor = g_strdup(yytext);
BEGIN OUT;
}
<END_VENDOR>[^\n]* {
if (current_vendor) {
g_free(current_vendor);
current_vendor = NULL;
}
BEGIN OUT;
}
<VENDOR>[0-9a-z_-]+ { vendor_name = g_strdup(yytext); BEGIN VENDOR_W_NAME; }
<VENDOR_W_NAME>[0-9]+ {
add_vendor(vendor_name,strtol(yytext,NULL,10));
g_free(vendor_name);
BEGIN OUT;
}
<VENDOR_W_NAME>0x[0-9a-f]+ {
add_vendor(vendor_name,strtol(yytext,NULL,16));
g_free(vendor_name);
BEGIN OUT;
}
<ATTR>[0-9a-z_/-]+ { attr_name = g_strdup(yytext); encrypted = FALSE; has_tag = FALSE; BEGIN ATTR_W_NAME; }
<ATTR_W_NAME>[0-9]+ { attr_id = g_strdup(yytext); BEGIN ATTR_W_ID;}
<ATTR_W_NAME>0x[0-9a-f]+ { attr_id = g_strdup_printf("%u",(int)strtoul(yytext,NULL,16)); BEGIN ATTR_W_ID;}
<ATTR_W_ID>integer { attr_type = radius_integer; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>string { attr_type = radius_string; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>octets { attr_type = radius_octets; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>ipaddr { attr_type = radius_ipaddr; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>ipv6addr { attr_type = radius_ipv6addr; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>ipxnet { attr_type = radius_ipxnet; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>date { attr_type = radius_date; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>ifid { attr_type = radius_ifid; BEGIN ATTR_W_TYPE; }
<ATTR_W_ID>[0-9a-z_-]+ { attr_type = radius_octets; BEGIN ATTR_W_TYPE; }
<ATTR_W_TYPE>has_tag[,]? { has_tag = TRUE; attr_vendor = NULL; BEGIN ATTR_W_VENDOR; }
<ATTR_W_TYPE>encrypt=1[,]? { encrypted=TRUE; attr_vendor = NULL; BEGIN ATTR_W_VENDOR; }
<ATTR_W_TYPE>[,0-9a-z_-]+=([^\n]+) { /* ignore other parameters */ attr_vendor = NULL; BEGIN ATTR_W_VENDOR; }
<ATTR_W_TYPE>[0-9a-z_-]+ {
attr_vendor = g_strdup(yytext);
add_attribute(attr_name,attr_id,attr_type,attr_vendor,encrypted,has_tag);
g_free(attr_id);
g_free(attr_vendor);
g_free(attr_name);
attr_id = NULL;
attr_vendor = NULL;
attr_name = NULL;
BEGIN OUT;
}
<ATTR_W_TYPE>\n {
add_attribute(attr_name,attr_id,attr_type,current_vendor,encrypted,has_tag);
g_free(attr_id);
g_free(attr_name);
linenums[include_stack_ptr]++;
BEGIN OUT;
}
<ATTR_W_VENDOR>\n {
add_attribute(attr_name,attr_id,attr_type,attr_vendor,encrypted,has_tag);
g_free(attr_id);
g_free(attr_vendor);
g_free(attr_name);
linenums[include_stack_ptr]++;
BEGIN OUT;
};
<VALUE>[0-9a-z_/-]+ { attr_name = g_strdup(yytext); BEGIN VALUE_W_ATTR; }
<VALUE_W_ATTR>[^[:blank:]]+ { value_repr = g_strdup(yytext); BEGIN VALUE_W_NAME; }
<VALUE_W_NAME>[0-9]+ { add_value(attr_name,value_repr,strtol(yytext,NULL,10)); g_free(attr_name); g_free(value_repr); BEGIN OUT;}
<VALUE_W_NAME>0x[0-9a-f]+ { add_value(attr_name,value_repr,strtol(yytext,NULL,16)); g_free(attr_name); g_free(value_repr); BEGIN OUT;}
<INCLUDE>[^[:blank:]\n]+ {
if ( include_stack_ptr >= MAX_INCLUDE_DEPTH ) {
g_string_sprintfa(error, "$INCLUDE files nested to deeply\n");
yyterminate();
}
include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
fullpaths[include_stack_ptr] = g_strdup_printf("%s%c%s",directory,DIR_SEPARATOR,yytext);
yyin = fopen( fullpaths[include_stack_ptr], "r" );
if (!yyin) {
if (errno) {
g_string_sprintfa(error, "Could not open file: '%s', error: %s\n", fullpaths[include_stack_ptr], strerror(errno) );
yyterminate();
}
} else {
linenums[include_stack_ptr] = 1;
yy_switch_to_buffer(yy_create_buffer( yyin, YY_BUF_SIZE ) );
}
BEGIN OUT;
}
<<EOF>> {
if ( --include_stack_ptr < 0 ) {
yyterminate();
} else {
g_free(fullpaths[include_stack_ptr+1]);
fullpaths[include_stack_ptr+1] = NULL;
yy_delete_buffer( YY_CURRENT_BUFFER );
yy_switch_to_buffer(include_stack[include_stack_ptr]);
}
BEGIN OUT;
}
\n { linenums[include_stack_ptr]++; BEGIN OUT; }
%%
void add_vendor(const gchar* name, guint32 vendor_id) {
radius_vendor_info_t* v = g_malloc(sizeof(radius_vendor_info_t));
v->name = g_strdup(name);
v->code = vendor_id;
v->attrs_by_id = g_hash_table_new(g_direct_hash,g_direct_equal);
v->ett = -1;
g_hash_table_insert(dict->vendors_by_id,GUINT_TO_POINTER(v->code),v);
g_hash_table_insert(dict->vendors_by_name,v->name,v);
}
void add_attribute(const gchar* name, const gchar* code, radius_attr_dissector_t type, const gchar* vendor_name, gboolean crypt, gboolean tagged) {
radius_attr_info_t* a = g_malloc(sizeof(radius_attr_info_t));
GHashTable* by_id;
if (vendor_name) {
radius_vendor_info_t* v;
v = g_hash_table_lookup(dict->vendors_by_name,vendor_name);
if (! v) {
g_string_sprintfa(error, "Vendor: '%s', does not exist in %s:%i \n", vendor_name, fullpaths[include_stack_ptr], linenums[include_stack_ptr] );
BEGIN JUNK;
return;
} else {
by_id = v->attrs_by_id;
}
} else {
by_id = dict->attrs_by_id;
}
a->name = g_strdup(name);
a->code = strtol(code,NULL,10);
a->encrypt = crypt;
a->tagged = tagged;
a->type = type;
a->dissector = NULL;
a->vs = NULL;
a->hf = -1;
a->hf64 = -1;
a->hf_tag = -1;
a->hf_len = -1;
a->ett = -1;
g_hash_table_insert(by_id,GUINT_TO_POINTER(a->code),a);
g_hash_table_insert(dict->attrs_by_name,(gpointer) (a->name),a);
}
void add_value(const gchar* attrib_name, const gchar* value_repr, long value) {
value_string v;
GArray* a = 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(value_repr);
g_array_append_val(a,v);
}
static void setup_attrs(gpointer k _U_, gpointer v, gpointer p _U_) {
radius_attr_info_t* a = 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*) vs.a->data;
g_array_free(vs.a,FALSE);
g_hash_table_remove(value_strings,key);
g_free(key);
}
}
static void setup_vendors(gpointer k _U_, gpointer v, gpointer p) {
radius_vendor_info_t* vnd = 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*)(((GArray*)v)->data);
g_free(k);
for (;vs->strptr;vs++) {
g_free((void*)vs->strptr);
}
g_array_free(v,TRUE);
return TRUE;
}
static gboolean destroy_attrs(gpointer k _U_, gpointer v, gpointer p _U_) {
radius_attr_info_t* a = v;
int i;
g_free((gpointer) (a->name));
if (a->vs) {
for(i=0; a->vs[i].strptr; i++) {
g_free((void *)a->vs[i].strptr);
}
g_free((void *)a->vs);
}
g_free(a);
return TRUE;
}
static gboolean destroy_vendors(gpointer k _U_, gpointer v, gpointer p) {
radius_vendor_info_t* vnd = v;
g_free(vnd->name);
g_hash_table_foreach_remove(vnd->attrs_by_id,destroy_attrs,p);
g_hash_table_destroy(vnd->attrs_by_id);
g_free(vnd);
return TRUE;
}
static void destroy_dict(radius_dictionary_t* d) {
g_hash_table_foreach_remove(d->attrs_by_id,destroy_attrs,NULL);
g_hash_table_foreach_remove(d->vendors_by_id,destroy_vendors,NULL);
g_hash_table_destroy(d->vendors_by_id);
g_hash_table_destroy(d->attrs_by_id);
g_hash_table_destroy(d->vendors_by_name);
g_hash_table_destroy(d->attrs_by_name);
g_free(d);
}
radius_dictionary_t* radius_load_dictionary (gchar* dir, const gchar* filename, gchar** err_str) {
int i;
directory = dir;
fullpaths[include_stack_ptr] = g_strdup_printf("%s%c%s",directory,DIR_SEPARATOR,filename);
error = g_string_new("");
yyin = fopen(fullpaths[include_stack_ptr],"r");
if (!yyin) {
g_string_sprintfa(error, "Could not open file: '%s', error: %s\n", fullpaths[include_stack_ptr], strerror(errno) );
g_free(fullpaths[include_stack_ptr]);
*err_str = error->str;
g_string_free(error,FALSE);
return NULL;
}
dict = g_malloc(sizeof(radius_dictionary_t));
dict->attrs_by_id = g_hash_table_new(g_direct_hash,g_direct_equal);
dict->attrs_by_name = g_hash_table_new(g_str_hash,g_str_equal);
dict->vendors_by_id = g_hash_table_new(g_direct_hash,g_direct_equal);
dict->vendors_by_name = g_hash_table_new(g_str_hash,g_str_equal);
value_strings = g_hash_table_new(g_str_hash,g_str_equal);
BEGIN OUT;
yylex();
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);
destroy_dict(dict);
return NULL;
} else {
*err_str = NULL;
g_string_free(error,TRUE);
return dict;
}
}
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