forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
There's no guarantee that there will be two digits after PRI-XMIT or PRI-RCV; the capture file in bug 3535, for exmaple, has "PRI-XMIT-0/1" and "PRI-RCV-0". Require a minimum of 1, not 2, non-{/(:} characters. Leave the maximum of 20 in place. Change-Id: Ie8f8f4ff5eb04baf0ee61bf28015e59a1fa43948 Reviewed-on: https://code.wireshark.org/review/29947 Reviewed-by: Guy Harris <guy@alum.mit.edu>
402 lines
8.3 KiB
Text
402 lines
8.3 KiB
Text
%top {
|
|
/* Include this before everything else, for various large-file definitions */
|
|
#include "config.h"
|
|
}
|
|
|
|
/*
|
|
* We want a reentrant scanner.
|
|
*/
|
|
%option reentrant
|
|
|
|
/*
|
|
* We want to generate code that can be used by a reentrant parser
|
|
* generated by Bison or Berkeley YACC.
|
|
*/
|
|
%option bison-bridge
|
|
|
|
/*
|
|
* We don't read interactively from the terminal.
|
|
*/
|
|
%option never-interactive
|
|
|
|
/*
|
|
* We want to stop processing when we get to the end of the input.
|
|
*/
|
|
%option noyywrap
|
|
|
|
/*
|
|
* The type for the state we keep for the scanner (and parser).
|
|
*/
|
|
%option extra-type="ascend_state_t *"
|
|
|
|
/*
|
|
* Prefix scanner routines with "ascend" rather than "yy", so this scanner
|
|
* can coexist with other scanners.
|
|
*/
|
|
%option prefix="ascend"
|
|
|
|
/*
|
|
* We have to override the memory allocators so that we don't get
|
|
* "unused argument" warnings from the yyscanner argument (which
|
|
* we don't use, as we have a global memory allocator).
|
|
*
|
|
* We provide, as macros, our own versions of the routines generated by Flex,
|
|
* which just call malloc()/realloc()/free() (as the Flex versions do),
|
|
* discarding the extra argument.
|
|
*/
|
|
%option noyyalloc
|
|
%option noyyrealloc
|
|
%option noyyfree
|
|
|
|
%{
|
|
/* ascend_scanner.l
|
|
*
|
|
* Wiretap Library
|
|
* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "wtap-int.h"
|
|
#include "ascendtext.h"
|
|
#include "ascend-int.h"
|
|
#include "ascend.h"
|
|
#include "file_wrappers.h"
|
|
|
|
/*
|
|
* Disable diagnostics in the code generated by Flex.
|
|
*/
|
|
DIAG_OFF_FLEX
|
|
|
|
#define YY_INPUT(buf,result,max_size) { \
|
|
ascend_state_t *parser_state = ascendget_extra(yyscanner); \
|
|
int c = file_getc(parser_state->fh); \
|
|
if (c == EOF) { \
|
|
parser_state->err = file_error(parser_state->fh, \
|
|
&parser_state->err_info); \
|
|
if (parser_state->err == 0) \
|
|
parser_state->err = WTAP_ERR_SHORT_READ; \
|
|
result = YY_NULL; \
|
|
} else { \
|
|
buf[0] = c; \
|
|
result = 1; \
|
|
} \
|
|
}
|
|
|
|
#define NO_USER "<none>"
|
|
|
|
#ifndef HAVE_UNISTD_H
|
|
#define YY_NO_UNISTD_H
|
|
#endif
|
|
|
|
/*
|
|
* Sleazy hack to suppress compiler warnings in yy_fatal_error().
|
|
*/
|
|
#define YY_EXIT_FAILURE ((void)yyscanner, 2)
|
|
|
|
/*
|
|
* Macros for the allocators, to discard the extra argument.
|
|
*/
|
|
#define ascendalloc(size, yyscanner) (void *)malloc(size)
|
|
#define ascendrealloc(ptr, size, yyscanner) (void *)realloc((char *)(ptr), (size))
|
|
#define ascendfree(ptr, yyscanner) free((char *)ptr)
|
|
|
|
%}
|
|
|
|
D [0-9]
|
|
H [A-Fa-f0-9]
|
|
|
|
PPP_XPFX PPP-OUT
|
|
PPP_RPFX PPP-IN
|
|
ISDN_XPFX PRI-XMIT-
|
|
ISDN_RPFX PRI-RCV-
|
|
WAN_XPFX XMIT[\-:]*
|
|
WAN_RPFX RECV[\-:]*
|
|
ETHER_PFX ETHER
|
|
|
|
WDD_DATE "Date:"
|
|
WDD_TIME "Time:"
|
|
WDD_CAUSE "Cause an attempt to place call to "
|
|
WDD_CALLNUM [^\n\r\t ]+
|
|
WDD_CHUNK "WD_DIALOUT_DISP: chunk"
|
|
WDD_TYPE "type "[^\n\r\t ]+
|
|
|
|
%s sc_gen_task
|
|
%s sc_gen_time_s
|
|
%s sc_gen_time_u
|
|
%s sc_gen_octets
|
|
%s sc_gen_counter
|
|
%s sc_gen_byte
|
|
|
|
%s sc_wds_user
|
|
%s sc_wds_sess
|
|
|
|
%s sc_wdd_date_d
|
|
%s sc_wdd_date_m
|
|
%s sc_wdd_date_y
|
|
%s sc_wdd_time
|
|
%s sc_wdd_time_h
|
|
%s sc_wdd_time_m
|
|
%s sc_wdd_time_s
|
|
%s sc_wdd_cause
|
|
%s sc_wdd_callnum
|
|
%s sc_wdd_chunk
|
|
%s sc_wdd_chunknum
|
|
%s sc_wdd_type
|
|
|
|
%s sc_chardisp
|
|
|
|
%s sc_isdn_call
|
|
%s sc_ether_direction
|
|
|
|
%%
|
|
|
|
<INITIAL,sc_gen_byte>{ETHER_PFX} {
|
|
BEGIN(sc_ether_direction);
|
|
yylval->d = ASCEND_PFX_ETHER;
|
|
return ETHER_PREFIX;
|
|
}
|
|
|
|
<INITIAL,sc_gen_byte>{ISDN_XPFX} {
|
|
BEGIN(sc_isdn_call);
|
|
yylval->d = ASCEND_PFX_ISDN_X;
|
|
return ISDN_PREFIX;
|
|
}
|
|
|
|
<INITIAL,sc_gen_byte>{ISDN_RPFX} {
|
|
BEGIN(sc_isdn_call);
|
|
yylval->d = ASCEND_PFX_ISDN_R;
|
|
return ISDN_PREFIX;
|
|
}
|
|
|
|
<INITIAL,sc_gen_byte>{WAN_XPFX} {
|
|
BEGIN(sc_wds_user);
|
|
yylval->d = ASCEND_PFX_WDS_X;
|
|
return WDS_PREFIX;
|
|
}
|
|
|
|
<INITIAL,sc_gen_byte>{WAN_RPFX} {
|
|
BEGIN(sc_wds_user);
|
|
yylval->d = ASCEND_PFX_WDS_R;
|
|
return WDS_PREFIX;
|
|
}
|
|
|
|
<INITIAL,sc_gen_byte>{PPP_XPFX} {
|
|
BEGIN(sc_wds_user);
|
|
yylval->d = ASCEND_PFX_WDS_X;
|
|
return WDS_PREFIX;
|
|
}
|
|
|
|
<INITIAL,sc_gen_byte>{PPP_RPFX} {
|
|
BEGIN(sc_wds_user);
|
|
yylval->d = ASCEND_PFX_WDS_R;
|
|
return WDS_PREFIX;
|
|
}
|
|
|
|
/*
|
|
* If we allow an arbitrary non-zero number of non-left-parentheses after
|
|
* "ETHER", that means that some file that has ETHER followed by a lot of
|
|
* text (see, for example, tpncp/tpncp.dat in the source tree) can cause
|
|
* either an infinite loop or a loop that take forever to finish, as the
|
|
* scanner keeps swallowing characters. Limit it to 20 characters.
|
|
*
|
|
* XXX - any reason to require at least two of them?
|
|
*/
|
|
<sc_ether_direction>[^\(]{2,20} {
|
|
BEGIN(sc_gen_task);
|
|
return STRING;
|
|
}
|
|
|
|
/*
|
|
* If we allow an arbitrary non-zero number of non-slash, non-left-parentheses,
|
|
* non-colon characters after "PRI-XMIT", that means that some file that has
|
|
* PRI-XMIT= followed by a lot of text can cause either an infinite loop or
|
|
* a loop that take forever to finish, as the scanner keeps swallowing
|
|
* characters. Limit it to 20 characters.
|
|
*/
|
|
<sc_isdn_call>[^\/\(:]{1,20} {
|
|
BEGIN(sc_gen_task);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_wds_user>[^:]{2,20} {
|
|
char *atcopy = g_strdup(yytext);
|
|
char colon = input(yyscanner);
|
|
char after = input(yyscanner);
|
|
int retval = STRING;
|
|
|
|
unput(after); unput(colon);
|
|
|
|
if (after != '(' && after != ' ') {
|
|
BEGIN(sc_wds_sess);
|
|
if (yyextra->pseudo_header != NULL) {
|
|
g_strlcpy(yyextra->pseudo_header->user, atcopy, ASCEND_MAX_STR_LEN);
|
|
}
|
|
} else { /* We have a version 7 file */
|
|
BEGIN(sc_gen_task);
|
|
if (yyextra->pseudo_header != NULL) {
|
|
g_strlcpy(yyextra->pseudo_header->user, NO_USER, ASCEND_MAX_STR_LEN);
|
|
}
|
|
/* Are valid values ever > 2^32? If so we need to adjust YYSTYPE and a lot of */
|
|
/* upstream code accordingly. */
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
retval = DECNUM;
|
|
}
|
|
g_free (atcopy);
|
|
return retval;
|
|
}
|
|
|
|
<sc_wds_sess>{D}* {
|
|
BEGIN(sc_gen_task);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_gen_task>(0x|0X)?{H}{2,8} {
|
|
BEGIN(sc_gen_time_s);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 16);
|
|
return HEXNUM;
|
|
}
|
|
|
|
<sc_gen_task>\"[A-Za-z0-9_ ]+\" {
|
|
return STRING;
|
|
}
|
|
|
|
<sc_gen_time_s>{D}{1,10} {
|
|
BEGIN(sc_gen_time_u);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_gen_time_u>{D}{1,6} {
|
|
char *atcopy = g_strdup(yytext);
|
|
BEGIN(sc_gen_octets);
|
|
/* only want the most significant 2 digits. convert to usecs */
|
|
if (strlen(atcopy) > 2)
|
|
atcopy[2] = '\0';
|
|
yylval->d = (guint32) strtoul(atcopy, NULL, 10) * 10000;
|
|
g_free(atcopy);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_gen_octets>{D}{1,10} {
|
|
BEGIN(sc_gen_counter);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_gen_counter,sc_gen_byte>"["{H}{4}"]:" {
|
|
BEGIN(sc_gen_byte);
|
|
return COUNTER;
|
|
}
|
|
|
|
<sc_gen_byte>{H}{2} {
|
|
yylval->b = (guint8)(guint32) strtoul(yytext, NULL, 16);
|
|
return HEXBYTE;
|
|
}
|
|
|
|
<sc_gen_byte>" "{4} {
|
|
BEGIN(sc_chardisp);
|
|
}
|
|
|
|
<sc_chardisp>.* {
|
|
BEGIN(sc_gen_byte);
|
|
}
|
|
|
|
<INITIAL,sc_gen_byte>{WDD_DATE} {
|
|
BEGIN(sc_wdd_date_d);
|
|
return WDD_DATE;
|
|
}
|
|
|
|
<sc_wdd_date_d>{D}{2} {
|
|
BEGIN(sc_wdd_date_m);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_wdd_date_m>{D}{2} {
|
|
BEGIN(sc_wdd_date_y);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_wdd_date_y>{D}{4} {
|
|
BEGIN(sc_wdd_time);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_wdd_time>{WDD_TIME} {
|
|
BEGIN(sc_wdd_time_h);
|
|
return KEYWORD;
|
|
}
|
|
|
|
<sc_wdd_time_h>{D}{2} {
|
|
BEGIN(sc_wdd_time_m);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_wdd_time_m>{D}{2} {
|
|
BEGIN(sc_wdd_time_s);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_wdd_time_s>{D}{2} {
|
|
BEGIN(sc_wdd_cause);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 10);
|
|
return DECNUM;
|
|
}
|
|
|
|
<sc_wdd_cause>{WDD_CAUSE} {
|
|
BEGIN(sc_wdd_callnum);
|
|
return KEYWORD;
|
|
}
|
|
|
|
<sc_wdd_callnum>{WDD_CALLNUM} {
|
|
BEGIN(sc_wdd_chunk);
|
|
if (yyextra->pseudo_header != NULL) {
|
|
g_strlcpy(yyextra->pseudo_header->call_num, yytext, ASCEND_MAX_STR_LEN);
|
|
}
|
|
return STRING;
|
|
}
|
|
|
|
<INITIAL,sc_wdd_chunk,sc_gen_byte>{WDD_CHUNK} {
|
|
BEGIN(sc_wdd_chunknum);
|
|
return WDD_CHUNK;
|
|
}
|
|
|
|
<sc_wdd_chunknum>{H}{1,8} {
|
|
BEGIN(sc_wdd_type);
|
|
yylval->d = (guint32) strtoul(yytext, NULL, 16);
|
|
return HEXNUM;
|
|
}
|
|
|
|
<sc_wdd_type>{WDD_TYPE} {
|
|
BEGIN(sc_gen_task);
|
|
return KEYWORD;
|
|
}
|
|
|
|
<sc_gen_task>\/{D}+ {
|
|
return SLASH_SUFFIX;
|
|
}
|
|
|
|
(0x|0X)?{H}+ { return HEXNUM; }
|
|
|
|
task:|task|at|time:|octets { return KEYWORD; }
|
|
|
|
<<EOF>> { yyterminate(); }
|
|
|
|
(.|\n) ;
|
|
|
|
%%
|
|
|
|
/*
|
|
* Turn diagnostics back on, so we check the code that we've written.
|
|
*/
|
|
DIAG_ON_FLEX
|