forked from osmocom/wireshark
364 lines
7.4 KiB
Text
364 lines
7.4 KiB
Text
/*
|
|
* We don't use unput, so don't generate code for it.
|
|
*/
|
|
%option nounput
|
|
|
|
/*
|
|
* We don't read from the terminal.
|
|
*/
|
|
%option never-interactive
|
|
|
|
/*
|
|
* Prefix scanner routines with "uat_load_" rather than "yy", so this scanner
|
|
* can coexist with other scanners.
|
|
*/
|
|
%option prefix="uat_load_"
|
|
|
|
%{
|
|
/*
|
|
* uat_load.l
|
|
*
|
|
* $Id$
|
|
*
|
|
* User Accessible Tables
|
|
* Mantain an array of user accessible data strucures
|
|
* One parser to fit them all
|
|
*
|
|
* (c) 2007, Luis E. Garcia Ontanon <luis@ontanon.org>
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 2001 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
|
|
#include <glib.h>
|
|
|
|
#include <epan/emem.h>
|
|
#include "uat-int.h"
|
|
#include "uat_load_lex.h"
|
|
#include <wsutil/file_util.h>
|
|
|
|
#ifdef _WIN32
|
|
/* disable Windows VC compiler warning "signed/unsigned mismatch" associated */
|
|
/* with YY_INPUT code generated by flex versions such as 2.5.35. */
|
|
#pragma warning (disable:4018)
|
|
#endif
|
|
|
|
static uat_t* uat;
|
|
static guint colnum;
|
|
static gchar* ptr;
|
|
static guint len;
|
|
static gchar* error;
|
|
static void* record;
|
|
static guint linenum;
|
|
static gchar *parse_str;
|
|
static guint parse_str_pos;
|
|
|
|
#define ERROR(fmtd) do { error = ep_strdup_printf("%s:%d: %s",uat->filename,linenum,ep_strdup_printf fmtd); yyterminate(); } while(0)
|
|
|
|
#define SET_FIELD() \
|
|
{ const gchar* err; \
|
|
if (uat->fields[colnum].cb.chk) { \
|
|
if ( ! uat->fields[colnum].cb.chk(record, ptr, len, uat->fields[colnum].cbdata.chk, uat->fields[colnum].fld_data, &err) ) { \
|
|
ERROR(("%s",err)); \
|
|
}\
|
|
}\
|
|
uat->fields[colnum].cb.set(record, ptr, len, uat->fields[colnum].cbdata.chk, uat->fields[colnum].fld_data);\
|
|
g_free(ptr);\
|
|
colnum++; \
|
|
} while(0)
|
|
|
|
#ifdef DEBUG_UAT_LOAD
|
|
#define DUMP_FIELD(str) \
|
|
{ guint i; printf("%s: %s='",str,uat->fields[colnum].name); for(i=0;i<len;i++) if (uat->fields[colnum].mode == PT_TXTMOD_HEXBYTES) { printf("%.2x ",((guint8*)ptr)[i]); } else putc(ptr[i],stdout); printf("'[%d]\n",len); }
|
|
|
|
#define DUMP(str) printf("%s\n",str)
|
|
#else
|
|
#define DUMP_FIELD(s)
|
|
#define DUMP(s)
|
|
#endif
|
|
|
|
/* Modified version of YY_INPUT generated by Flex 2.91 */
|
|
#define YY_INPUT(buf,result,max_size) \
|
|
if ( parse_str ) \
|
|
{ \
|
|
int n = 0; \
|
|
guint pslen = strlen(parse_str); \
|
|
if (parse_str_pos < pslen) \
|
|
{ \
|
|
n = pslen - parse_str_pos; \
|
|
if (n > max_size) n = max_size; \
|
|
memcpy(buf, parse_str + parse_str_pos, n); \
|
|
parse_str_pos += n; \
|
|
} \
|
|
result = n; \
|
|
} \
|
|
else \
|
|
{ \
|
|
errno=0; \
|
|
while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
|
|
{ \
|
|
if( errno != EINTR) \
|
|
{ \
|
|
YY_FATAL_ERROR( "input in flex scanner failed" ); \
|
|
break; \
|
|
} \
|
|
errno=0; \
|
|
clearerr(yyin); \
|
|
} \
|
|
}
|
|
|
|
/*
|
|
* XXX
|
|
* quoted_string below fails badly on "...\\"
|
|
* workarround in uat_save(), using /x5c and /x22
|
|
*/
|
|
%}
|
|
|
|
quoted_string \042([^\042]|\134\042)*\042
|
|
binstring ([0-9a-zA-Z][0-9a-zA-Z])*
|
|
separator [ \t]*,
|
|
newline [ \t]*[\r]?\n
|
|
ws [ \t]+
|
|
comment #[^\n]*\n
|
|
|
|
%x START_OF_LINE NEXT_FIELD SEPARATOR END_OF_RECORD ERRORED
|
|
%%
|
|
<START_OF_LINE,NEXT_FIELD>{ws} ;
|
|
<START_OF_LINE>{newline} linenum++;
|
|
<START_OF_LINE>{comment} linenum++;
|
|
|
|
<START_OF_LINE,NEXT_FIELD>{separator} {
|
|
ptr = g_strdup("");
|
|
len = 0;
|
|
|
|
DUMP_FIELD("empty->next");
|
|
|
|
SET_FIELD();
|
|
|
|
if ( colnum >= uat->ncols ) {
|
|
ERROR(("more fields than required"));
|
|
}
|
|
|
|
BEGIN NEXT_FIELD;
|
|
}
|
|
|
|
<START_OF_LINE,NEXT_FIELD>{newline} {
|
|
ptr = "";
|
|
len = 0;
|
|
|
|
BEGIN END_OF_RECORD;
|
|
|
|
yyless(yyleng);
|
|
}
|
|
|
|
<START_OF_LINE,NEXT_FIELD>{quoted_string} {
|
|
ptr = uat_undquote(yytext,yyleng,&len);
|
|
|
|
|
|
if (colnum < uat->ncols - 1) {
|
|
DUMP("quoted_str->s");
|
|
BEGIN SEPARATOR;
|
|
} else {
|
|
DUMP("quoted_str->eor");
|
|
BEGIN END_OF_RECORD;
|
|
}
|
|
}
|
|
|
|
<START_OF_LINE,NEXT_FIELD>{binstring} {
|
|
ptr = uat_unbinstring(yytext,yyleng,&len);
|
|
|
|
if (!ptr) {
|
|
ERROR(("uneven hexstring for field %s",uat->fields[colnum].name));
|
|
}
|
|
|
|
if ( colnum < uat->ncols - 1 ) {
|
|
DUMP("binstring->s");
|
|
BEGIN SEPARATOR;
|
|
} else {
|
|
DUMP("binstring->eor");
|
|
BEGIN END_OF_RECORD;
|
|
}
|
|
}
|
|
|
|
<SEPARATOR>{separator} {
|
|
|
|
DUMP_FIELD("separator->next");
|
|
|
|
SET_FIELD();
|
|
|
|
if ( colnum >= uat->ncols ) {
|
|
ERROR(("more fields than required"));
|
|
}
|
|
|
|
BEGIN NEXT_FIELD;
|
|
}
|
|
|
|
<SEPARATOR>{newline} {
|
|
linenum++;
|
|
ERROR(("expecting field %s in previuos line",uat->fields[colnum].name));
|
|
BEGIN START_OF_LINE;
|
|
}
|
|
|
|
<SEPARATOR>. {
|
|
ERROR(("unexpected char '%s' while looking for field %s",yytext,uat->fields[colnum].name));
|
|
BEGIN ERRORED;
|
|
}
|
|
|
|
<END_OF_RECORD>{separator} {
|
|
ERROR(("more fields than required"));
|
|
BEGIN ERRORED;
|
|
}
|
|
|
|
<END_OF_RECORD>{newline} {
|
|
void* rec;
|
|
const gchar* err = NULL;
|
|
|
|
linenum++;
|
|
|
|
DUMP_FIELD("newline->start");
|
|
|
|
SET_FIELD();
|
|
|
|
rec = uat_add_record(uat, record);
|
|
|
|
if (uat->update_cb)
|
|
uat->update_cb(rec,&err);
|
|
|
|
if (err) {
|
|
ERROR(("%s",err));
|
|
}
|
|
|
|
colnum = 0;;
|
|
ptr = NULL;
|
|
len = 0;
|
|
memset(record,0,uat->record_size);
|
|
|
|
BEGIN START_OF_LINE;
|
|
}
|
|
|
|
<END_OF_RECORD>. {
|
|
ERROR(("unexpected char while looking for end of line"));
|
|
BEGIN ERRORED;
|
|
}
|
|
|
|
<ERRORED>{newline} { linenum++; BEGIN START_OF_LINE; }
|
|
<ERRORED>. ;
|
|
|
|
{newline} { linenum++; ERROR(("incomplete record")); BEGIN START_OF_LINE; }
|
|
. { ERROR(("unexpected input")); }
|
|
|
|
%%
|
|
|
|
|
|
|
|
|
|
gboolean uat_load(uat_t* uat_in, char** err) {
|
|
gchar* fname = uat_get_actual_filename(uat_in, FALSE);
|
|
|
|
uat = uat_in;
|
|
parse_str = NULL;
|
|
|
|
if (!fname) {
|
|
UAT_UPDATE(uat);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
if (!(yyin = ws_fopen(fname,"r"))) {
|
|
*err = strerror(errno);
|
|
g_free(fname);
|
|
return FALSE;
|
|
}
|
|
|
|
error = NULL;
|
|
colnum = 0;
|
|
record = g_malloc0(uat->record_size);
|
|
linenum = 1;
|
|
|
|
BEGIN START_OF_LINE;
|
|
DUMP(fname);
|
|
g_free(fname); /* we're done with the file name now */
|
|
|
|
yylex();
|
|
yyrestart(NULL);
|
|
|
|
uat->changed = FALSE;
|
|
uat->loaded = TRUE;
|
|
if (error) {
|
|
UAT_UPDATE(uat);
|
|
*err = ep_strdup(error);
|
|
return FALSE;
|
|
} else {
|
|
UAT_UPDATE(uat);
|
|
*err = NULL;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
gboolean uat_load_str(uat_t* uat_in, char* entry, char** err) {
|
|
uat = uat_in;
|
|
parse_str = g_strdup_printf("%s\n", entry); /* Records must end with a newline */
|
|
parse_str_pos = 0;
|
|
yyin = NULL;
|
|
|
|
error = NULL;
|
|
colnum = 0;
|
|
record = g_malloc0(uat->record_size);
|
|
linenum = 1;
|
|
|
|
BEGIN START_OF_LINE;
|
|
DUMP(entry);
|
|
|
|
yylex();
|
|
yyrestart(NULL);
|
|
g_free(parse_str);
|
|
parse_str = NULL;
|
|
|
|
uat->changed = TRUE;
|
|
uat->loaded = TRUE;
|
|
if (error) {
|
|
UAT_UPDATE(uat);
|
|
*err = ep_strdup(error);
|
|
return FALSE;
|
|
} else {
|
|
UAT_UPDATE(uat);
|
|
*err = NULL;
|
|
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;
|
|
}
|