Hi,
The following flex input,
---> flextest.lex <---
BOGUS aaa[insert 3000 more a's here]aaa
%%
a { /* example */ }
---> end <---
causes a segfault:
$ flex flextest.lex
Segmentation fault
I am told this could be a potential security issue, since
nmdef is an automatic variable defined inside a function, and hence
lands up on the stack.
The the person who discovered the flaw, Alexander Klauer
<[EMAIL PROTECTED]>, created an initial patch, which has been expanded
to cover all other places where a fixed size buffer was initiated
from an unchecked yytext string. There were several other places
where this happened.
A fixed Debian package has been uploaded to incoming
manoj
Here follows a diff against stock flex 2.5.4a:
Index: scan.l
===================================================================
RCS file: /usr/local/src/Master/debian/flex/scan.l,v
retrieving revision 1.1.1.1
retrieving revision 1.3
diff -u -B -b -w -r1.1.1.1 -r1.3
--- scan.l 12 Jul 2001 19:04:59 -0000 1.1.1.1
+++ scan.l 5 Sep 2002 02:43:05 -0000 1.3
@@ -49,7 +49,15 @@
return CHAR;
#define RETURNNAME \
+ if(strlen(yytext) < MAXLINE) \
+ { \
strcpy( nmstr, yytext ); \
+ } \
+ else \
+ { \
+ fputs("Input line too long!\n", stderr); \
+ exit(1); \
+ } /* end of else */ \
return NAME;
#define PUT_BACK_STRING(str, start) \
@@ -136,7 +144,15 @@
^"%"[^sxaceknopr{}].* synerr( _( "unrecognized '%' directive" ) );
^{NAME} {
+ if(strlen(yytext) < MAXLINE)
+ {
strcpy( nmstr, yytext );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
didadef = false;
BEGIN(PICKUPDEF);
}
@@ -184,7 +200,17 @@
{WS} /* separates name and definition */
{NOT_WS}.* {
+ if(strlen(yytext) < MAXLINE)
+ {
strcpy( (char *) nmdef, yytext );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
+
+
/* Skip trailing whitespace. */
for ( i = strlen( (char *) nmdef ) - 1;
@@ -277,7 +303,15 @@
yyclass return OPT_YYCLASS;
\"[^"\n]*\" {
+ if(strlen(yytext + 1 ) < MAXLINE)
+ {
strcpy( nmstr, yytext + 1 );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
nmstr[strlen( nmstr ) - 1] = '\0';
return NAME;
}
@@ -401,7 +435,15 @@
"["({FIRST_CCL_CHAR}|{CCL_EXPR})({CCL_CHAR}|{CCL_EXPR})* {
int cclval;
+ if(strlen(yytext ) < MAXLINE)
+ {
strcpy( nmstr, yytext );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ }
/* Check to see if we've already encountered this
* ccl.
@@ -436,7 +478,15 @@
register Char *nmdefptr;
Char *ndlookup();
+ if(strlen(yytext + 1 ) < MAXLINE)
+ {
strcpy( nmstr, yytext + 1 );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
nmstr[yyleng - 2] = '\0'; /* chop trailing brace */
if ( (nmdefptr = ndlookup( nmstr )) == 0 )
Index: initscan.c
===================================================================
RCS file: /usr/local/src/Master/debian/flex/initscan.c,v
retrieving revision 1.1.1.1
retrieving revision 1.21
diff -u -B -b -w -r1.1.1.1 -r1.21
--- initscan.c 12 Jul 2001 19:04:59 -0000 1.1.1.1
+++ initscan.c 5 Sep 2002 02:46:14 -0000 1.21
@@ -10,7 +10,7 @@
#define YY_FLEX_MINOR_VERSION 5
#include <stdio.h>
-
+#include <errno.h>
/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
@@ -23,7 +23,9 @@
#ifdef __cplusplus
#include <stdlib.h>
+#ifndef _WIN32
#include <unistd.h>
+#endif
/* Use prototypes in function declarations. */
#define YY_USE_PROTOS
@@ -1292,7 +1294,15 @@
return CHAR;
#define RETURNNAME \
+ if(strlen(yytext) < MAXLINE) \
+ { \
strcpy( nmstr, yytext ); \
+ } \
+ else \
+ { \
+ fputs("Input line too long!\n", stderr); \
+ exit(1); \
+ } /* end of else */ \
return NAME;
#define PUT_BACK_STRING(str, start) \
@@ -1329,7 +1339,7 @@
#define OPTION 17
#define LINEDIR 18
-#line 1333 "scan.c"
+#line 1343 "scan.c"
/* Macros after this point can all be overridden by user definitions in
* section 1.
@@ -1429,9 +1439,20 @@
YY_FATAL_ERROR( "input in flex scanner failed" ); \
result = n; \
} \
- else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
- && ferror( yyin ) ) \
- YY_FATAL_ERROR( "input in flex scanner failed" );
+ 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); \
+ } \
+ }
#endif
/* No semi-colon after return; correct usage is to write "yyterminate();" -
@@ -1483,7 +1504,7 @@
register char *yy_cp, *yy_bp;
register int yy_act;
-#line 94 "scan.l"
+#line 102 "scan.l"
static int bracelevel, didadef, indented_code;
static int doing_rule_action = false;
@@ -1494,7 +1515,7 @@
Char nmdef[MAXLINE], myesc();
-#line 1498 "scan.c"
+#line 1519 "scan.c"
if ( yy_init )
{
@@ -1581,32 +1602,32 @@
case 1:
YY_RULE_SETUP
-#line 105 "scan.l"
+#line 113 "scan.l"
indented_code = true; BEGIN(CODEBLOCK);
YY_BREAK
case 2:
YY_RULE_SETUP
-#line 106 "scan.l"
+#line 114 "scan.l"
ACTION_ECHO; yy_push_state( COMMENT );
YY_BREAK
case 3:
YY_RULE_SETUP
-#line 107 "scan.l"
+#line 115 "scan.l"
yy_push_state( LINEDIR );
YY_BREAK
case 4:
YY_RULE_SETUP
-#line 108 "scan.l"
+#line 116 "scan.l"
return SCDECL;
YY_BREAK
case 5:
YY_RULE_SETUP
-#line 109 "scan.l"
+#line 117 "scan.l"
return XSCDECL;
YY_BREAK
case 6:
YY_RULE_SETUP
-#line 110 "scan.l"
+#line 118 "scan.l"
{
++linenum;
line_directive_out( (FILE *) 0, 1 );
@@ -1616,12 +1637,12 @@
YY_BREAK
case 7:
YY_RULE_SETUP
-#line 117 "scan.l"
+#line 125 "scan.l"
/* discard */
YY_BREAK
case 8:
YY_RULE_SETUP
-#line 119 "scan.l"
+#line 127 "scan.l"
{
sectnum = 2;
bracelevel = 0;
@@ -1633,95 +1654,103 @@
YY_BREAK
case 9:
YY_RULE_SETUP
-#line 128 "scan.l"
+#line 136 "scan.l"
yytext_is_array = false; ++linenum;
YY_BREAK
case 10:
YY_RULE_SETUP
-#line 129 "scan.l"
+#line 137 "scan.l"
yytext_is_array = true; ++linenum;
YY_BREAK
case 11:
YY_RULE_SETUP
-#line 131 "scan.l"
+#line 139 "scan.l"
BEGIN(OPTION); return OPTION_OP;
YY_BREAK
case 12:
YY_RULE_SETUP
-#line 133 "scan.l"
+#line 141 "scan.l"
++linenum; /* ignore */
YY_BREAK
case 13:
YY_RULE_SETUP
-#line 134 "scan.l"
+#line 142 "scan.l"
++linenum; /* ignore */
YY_BREAK
case 14:
YY_RULE_SETUP
-#line 136 "scan.l"
+#line 144 "scan.l"
synerr( _( "unrecognized '%' directive" ) );
YY_BREAK
case 15:
YY_RULE_SETUP
-#line 138 "scan.l"
+#line 146 "scan.l"
+{
+ if(strlen(yytext) < MAXLINE)
{
strcpy( nmstr, yytext );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
didadef = false;
BEGIN(PICKUPDEF);
}
YY_BREAK
case 16:
YY_RULE_SETUP
-#line 144 "scan.l"
+#line 160 "scan.l"
RETURNNAME;
YY_BREAK
case 17:
YY_RULE_SETUP
-#line 145 "scan.l"
+#line 161 "scan.l"
++linenum; /* allows blank lines in section 1 */
YY_BREAK
case 18:
YY_RULE_SETUP
-#line 146 "scan.l"
+#line 162 "scan.l"
ACTION_ECHO; ++linenum; /* maybe end of comment line */
YY_BREAK
case 19:
YY_RULE_SETUP
-#line 151 "scan.l"
+#line 167 "scan.l"
ACTION_ECHO; yy_pop_state();
YY_BREAK
case 20:
YY_RULE_SETUP
-#line 152 "scan.l"
+#line 168 "scan.l"
ACTION_ECHO;
YY_BREAK
case 21:
YY_RULE_SETUP
-#line 153 "scan.l"
+#line 169 "scan.l"
ACTION_ECHO;
YY_BREAK
case 22:
YY_RULE_SETUP
-#line 154 "scan.l"
+#line 170 "scan.l"
++linenum; ACTION_ECHO;
YY_BREAK
case 23:
YY_RULE_SETUP
-#line 158 "scan.l"
+#line 174 "scan.l"
yy_pop_state();
YY_BREAK
case 24:
YY_RULE_SETUP
-#line 159 "scan.l"
+#line 175 "scan.l"
linenum = myctoi( yytext );
YY_BREAK
case 25:
YY_RULE_SETUP
-#line 161 "scan.l"
+#line 177 "scan.l"
{
flex_free( (void *) infilename );
infilename = copy_string( yytext + 1 );
@@ -1730,24 +1759,24 @@
YY_BREAK
case 26:
YY_RULE_SETUP
-#line 166 "scan.l"
+#line 182 "scan.l"
/* ignore spurious characters */
YY_BREAK
case 27:
YY_RULE_SETUP
-#line 170 "scan.l"
+#line 186 "scan.l"
++linenum; BEGIN(INITIAL);
YY_BREAK
case 28:
YY_RULE_SETUP
-#line 172 "scan.l"
+#line 188 "scan.l"
ACTION_ECHO;
YY_BREAK
case 29:
YY_RULE_SETUP
-#line 174 "scan.l"
+#line 190 "scan.l"
{
++linenum;
ACTION_ECHO;
@@ -1759,14 +1788,24 @@
case 30:
YY_RULE_SETUP
-#line 184 "scan.l"
+#line 200 "scan.l"
/* separates name and definition */
YY_BREAK
case 31:
YY_RULE_SETUP
-#line 186 "scan.l"
+#line 202 "scan.l"
+{
+ if(strlen(yytext) < MAXLINE)
{
strcpy( (char *) nmdef, yytext );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
+
+
/* Skip trailing whitespace. */
for ( i = strlen( (char *) nmdef ) - 1;
@@ -1782,7 +1821,7 @@
YY_BREAK
case 32:
YY_RULE_SETUP
-#line 201 "scan.l"
+#line 227 "scan.l"
{
if ( ! didadef )
synerr( _( "incomplete name definition" ) );
@@ -1794,94 +1833,94 @@
case 33:
YY_RULE_SETUP
-#line 211 "scan.l"
+#line 237 "scan.l"
++linenum; BEGIN(INITIAL);
YY_BREAK
case 34:
YY_RULE_SETUP
-#line 212 "scan.l"
+#line 238 "scan.l"
option_sense = true;
YY_BREAK
case 35:
YY_RULE_SETUP
-#line 214 "scan.l"
+#line 240 "scan.l"
return '=';
YY_BREAK
case 36:
YY_RULE_SETUP
-#line 216 "scan.l"
+#line 242 "scan.l"
option_sense = ! option_sense;
YY_BREAK
case 37:
YY_RULE_SETUP
-#line 218 "scan.l"
+#line 244 "scan.l"
csize = option_sense ? 128 : 256;
YY_BREAK
case 38:
YY_RULE_SETUP
-#line 219 "scan.l"
+#line 245 "scan.l"
csize = option_sense ? 256 : 128;
YY_BREAK
case 39:
YY_RULE_SETUP
-#line 221 "scan.l"
+#line 247 "scan.l"
long_align = option_sense;
YY_BREAK
case 40:
YY_RULE_SETUP
-#line 222 "scan.l"
+#line 248 "scan.l"
{
action_define( "YY_ALWAYS_INTERACTIVE", option_sense );
}
YY_BREAK
case 41:
YY_RULE_SETUP
-#line 225 "scan.l"
+#line 251 "scan.l"
yytext_is_array = option_sense;
YY_BREAK
case 42:
YY_RULE_SETUP
-#line 226 "scan.l"
+#line 252 "scan.l"
backing_up_report = option_sense;
YY_BREAK
case 43:
YY_RULE_SETUP
-#line 227 "scan.l"
+#line 253 "scan.l"
interactive = ! option_sense;
YY_BREAK
case 44:
YY_RULE_SETUP
-#line 228 "scan.l"
+#line 254 "scan.l"
C_plus_plus = option_sense;
YY_BREAK
case 45:
YY_RULE_SETUP
-#line 229 "scan.l"
+#line 255 "scan.l"
caseins = ! option_sense;
YY_BREAK
case 46:
YY_RULE_SETUP
-#line 230 "scan.l"
+#line 256 "scan.l"
caseins = option_sense;
YY_BREAK
case 47:
YY_RULE_SETUP
-#line 231 "scan.l"
+#line 257 "scan.l"
ddebug = option_sense;
YY_BREAK
case 48:
YY_RULE_SETUP
-#line 232 "scan.l"
+#line 258 "scan.l"
spprdflt = ! option_sense;
YY_BREAK
case 49:
YY_RULE_SETUP
-#line 233 "scan.l"
+#line 259 "scan.l"
useecs = option_sense;
YY_BREAK
case 50:
YY_RULE_SETUP
-#line 234 "scan.l"
+#line 260 "scan.l"
{
useecs = usemecs = false;
use_read = fullspd = true;
@@ -1889,7 +1928,7 @@
YY_BREAK
case 51:
YY_RULE_SETUP
-#line 238 "scan.l"
+#line 264 "scan.l"
{
useecs = usemecs = false;
use_read = fulltbl = true;
@@ -1897,22 +1936,22 @@
YY_BREAK
case 52:
YY_RULE_SETUP
-#line 242 "scan.l"
+#line 268 "scan.l"
ACTION_IFDEF("YY_NO_INPUT", ! option_sense);
YY_BREAK
case 53:
YY_RULE_SETUP
-#line 243 "scan.l"
+#line 269 "scan.l"
interactive = option_sense;
YY_BREAK
case 54:
YY_RULE_SETUP
-#line 244 "scan.l"
+#line 270 "scan.l"
lex_compat = option_sense;
YY_BREAK
case 55:
YY_RULE_SETUP
-#line 245 "scan.l"
+#line 271 "scan.l"
{
action_define( "YY_MAIN", option_sense );
do_yywrap = ! option_sense;
@@ -1920,138 +1959,146 @@
YY_BREAK
case 56:
YY_RULE_SETUP
-#line 249 "scan.l"
+#line 275 "scan.l"
usemecs = option_sense;
YY_BREAK
case 57:
YY_RULE_SETUP
-#line 250 "scan.l"
+#line 276 "scan.l"
{
action_define( "YY_NEVER_INTERACTIVE", option_sense );
}
YY_BREAK
case 58:
YY_RULE_SETUP
-#line 253 "scan.l"
+#line 279 "scan.l"
performance_report += option_sense ? 1 : -1;
YY_BREAK
case 59:
YY_RULE_SETUP
-#line 254 "scan.l"
+#line 280 "scan.l"
yytext_is_array = ! option_sense;
YY_BREAK
case 60:
YY_RULE_SETUP
-#line 255 "scan.l"
+#line 281 "scan.l"
use_read = option_sense;
YY_BREAK
case 61:
YY_RULE_SETUP
-#line 256 "scan.l"
+#line 282 "scan.l"
reject_really_used = option_sense;
YY_BREAK
case 62:
YY_RULE_SETUP
-#line 257 "scan.l"
+#line 283 "scan.l"
action_define( "YY_STACK_USED", option_sense );
YY_BREAK
case 63:
YY_RULE_SETUP
-#line 258 "scan.l"
+#line 284 "scan.l"
do_stdinit = option_sense;
YY_BREAK
case 64:
YY_RULE_SETUP
-#line 259 "scan.l"
+#line 285 "scan.l"
use_stdout = option_sense;
YY_BREAK
case 65:
YY_RULE_SETUP
-#line 260 "scan.l"
+#line 286 "scan.l"
ACTION_IFDEF("YY_NO_UNPUT", ! option_sense);
YY_BREAK
case 66:
YY_RULE_SETUP
-#line 261 "scan.l"
+#line 287 "scan.l"
printstats = option_sense;
YY_BREAK
case 67:
YY_RULE_SETUP
-#line 262 "scan.l"
+#line 288 "scan.l"
nowarn = ! option_sense;
YY_BREAK
case 68:
YY_RULE_SETUP
-#line 263 "scan.l"
+#line 289 "scan.l"
do_yylineno = option_sense;
YY_BREAK
case 69:
YY_RULE_SETUP
-#line 264 "scan.l"
+#line 290 "scan.l"
yymore_really_used = option_sense;
YY_BREAK
case 70:
YY_RULE_SETUP
-#line 265 "scan.l"
+#line 291 "scan.l"
do_yywrap = option_sense;
YY_BREAK
case 71:
YY_RULE_SETUP
-#line 267 "scan.l"
+#line 293 "scan.l"
ACTION_IFDEF("YY_NO_PUSH_STATE", ! option_sense);
YY_BREAK
case 72:
YY_RULE_SETUP
-#line 268 "scan.l"
+#line 294 "scan.l"
ACTION_IFDEF("YY_NO_POP_STATE", ! option_sense);
YY_BREAK
case 73:
YY_RULE_SETUP
-#line 269 "scan.l"
+#line 295 "scan.l"
ACTION_IFDEF("YY_NO_TOP_STATE", ! option_sense);
YY_BREAK
case 74:
YY_RULE_SETUP
-#line 271 "scan.l"
+#line 297 "scan.l"
ACTION_IFDEF("YY_NO_SCAN_BUFFER", ! option_sense);
YY_BREAK
case 75:
YY_RULE_SETUP
-#line 272 "scan.l"
+#line 298 "scan.l"
ACTION_IFDEF("YY_NO_SCAN_BYTES", ! option_sense);
YY_BREAK
case 76:
YY_RULE_SETUP
-#line 273 "scan.l"
+#line 299 "scan.l"
ACTION_IFDEF("YY_NO_SCAN_STRING", ! option_sense);
YY_BREAK
case 77:
YY_RULE_SETUP
-#line 275 "scan.l"
+#line 301 "scan.l"
return OPT_OUTFILE;
YY_BREAK
case 78:
YY_RULE_SETUP
-#line 276 "scan.l"
+#line 302 "scan.l"
return OPT_PREFIX;
YY_BREAK
case 79:
YY_RULE_SETUP
-#line 277 "scan.l"
+#line 303 "scan.l"
return OPT_YYCLASS;
YY_BREAK
case 80:
YY_RULE_SETUP
-#line 279 "scan.l"
+#line 305 "scan.l"
+{
+ if(strlen(yytext + 1 ) < MAXLINE)
{
strcpy( nmstr, yytext + 1 );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
nmstr[strlen( nmstr ) - 1] = '\0';
return NAME;
}
YY_BREAK
case 81:
YY_RULE_SETUP
-#line 285 "scan.l"
+#line 319 "scan.l"
{
format_synerr( _( "unrecognized %%option: %s" ),
yytext );
@@ -2061,28 +2108,28 @@
case 82:
YY_RULE_SETUP
-#line 292 "scan.l"
+#line 326 "scan.l"
++linenum; BEGIN(INITIAL);
YY_BREAK
case 83:
YY_RULE_SETUP
-#line 296 "scan.l"
+#line 330 "scan.l"
++bracelevel; yyless( 2 ); /* eat only %{ */
YY_BREAK
case 84:
YY_RULE_SETUP
-#line 297 "scan.l"
+#line 331 "scan.l"
--bracelevel; yyless( 2 ); /* eat only %} */
YY_BREAK
case 85:
YY_RULE_SETUP
-#line 299 "scan.l"
+#line 333 "scan.l"
ACTION_ECHO; /* indented code in prolog */
YY_BREAK
case 86:
YY_RULE_SETUP
-#line 301 "scan.l"
+#line 335 "scan.l"
{ /* non-indented code */
if ( bracelevel <= 0 )
{ /* not in %{ ... %} */
@@ -2097,16 +2144,16 @@
YY_BREAK
case 87:
YY_RULE_SETUP
-#line 313 "scan.l"
+#line 347 "scan.l"
ACTION_ECHO;
YY_BREAK
case 88:
YY_RULE_SETUP
-#line 314 "scan.l"
+#line 348 "scan.l"
++linenum; ACTION_ECHO;
YY_BREAK
case YY_STATE_EOF(SECT2PROLOG):
-#line 316 "scan.l"
+#line 350 "scan.l"
{
mark_prolog();
sectnum = 0;
@@ -2117,12 +2164,12 @@
case 89:
YY_RULE_SETUP
-#line 324 "scan.l"
+#line 358 "scan.l"
++linenum; /* allow blank lines in section 2 */
YY_BREAK
case 90:
YY_RULE_SETUP
-#line 326 "scan.l"
+#line 360 "scan.l"
{
indented_code = false;
doing_codeblock = true;
@@ -2132,17 +2179,17 @@
YY_BREAK
case 91:
YY_RULE_SETUP
-#line 333 "scan.l"
+#line 367 "scan.l"
BEGIN(SC); return '<';
YY_BREAK
case 92:
YY_RULE_SETUP
-#line 334 "scan.l"
+#line 368 "scan.l"
return '^';
YY_BREAK
case 93:
YY_RULE_SETUP
-#line 335 "scan.l"
+#line 369 "scan.l"
BEGIN(QUOTE); return '"';
YY_BREAK
case 94:
@@ -2150,7 +2197,7 @@
yy_c_buf_p = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 336 "scan.l"
+#line 370 "scan.l"
BEGIN(NUM); return '{';
YY_BREAK
case 95:
@@ -2158,12 +2205,12 @@
yy_c_buf_p = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 337 "scan.l"
+#line 371 "scan.l"
return '$';
YY_BREAK
case 96:
YY_RULE_SETUP
-#line 339 "scan.l"
+#line 373 "scan.l"
{
bracelevel = 1;
BEGIN(PERCENT_BRACE_ACTION);
@@ -2178,12 +2225,12 @@
YY_BREAK
case 97:
YY_RULE_SETUP
-#line 350 "scan.l"
+#line 384 "scan.l"
continued_action = true; ++linenum; return '\n';
YY_BREAK
case 98:
YY_RULE_SETUP
-#line 352 "scan.l"
+#line 386 "scan.l"
{
yyless( yyleng - 2 ); /* put back '/', '*' */
bracelevel = 0;
@@ -2193,12 +2240,12 @@
YY_BREAK
case 99:
YY_RULE_SETUP
-#line 359 "scan.l"
+#line 393 "scan.l"
/* allow indented rules */
YY_BREAK
case 100:
YY_RULE_SETUP
-#line 361 "scan.l"
+#line 395 "scan.l"
{
/* This rule is separate from the one below because
* otherwise we get variable trailing context, so
@@ -2218,7 +2265,7 @@
YY_BREAK
case 101:
YY_RULE_SETUP
-#line 378 "scan.l"
+#line 412 "scan.l"
{
bracelevel = 0;
continued_action = false;
@@ -2234,15 +2281,15 @@
}
YY_BREAK
case 102:
-#line 393 "scan.l"
+#line 427 "scan.l"
case 103:
YY_RULE_SETUP
-#line 393 "scan.l"
+#line 427 "scan.l"
return EOF_OP;
YY_BREAK
case 104:
YY_RULE_SETUP
-#line 395 "scan.l"
+#line 429 "scan.l"
{
sectnum = 3;
BEGIN(SECT3);
@@ -2251,11 +2298,19 @@
YY_BREAK
case 105:
YY_RULE_SETUP
-#line 401 "scan.l"
+#line 435 "scan.l"
{
int cclval;
+ if(strlen(yytext ) < MAXLINE)
+ {
strcpy( nmstr, yytext );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ }
/* Check to see if we've already encountered this
* ccl.
@@ -2288,12 +2343,20 @@
YY_BREAK
case 106:
YY_RULE_SETUP
-#line 435 "scan.l"
+#line 477 "scan.l"
{
register Char *nmdefptr;
Char *ndlookup();
+ if(strlen(yytext + 1 ) < MAXLINE)
+ {
strcpy( nmstr, yytext + 1 );
+ }
+ else
+ {
+ fputs("Input line too long!\n", stderr);
+ exit(1);
+ } /* end of else */
nmstr[yyleng - 2] = '\0'; /* chop trailing brace */
if ( (nmdefptr = ndlookup( nmstr )) == 0 )
@@ -2325,24 +2388,24 @@
YY_BREAK
case 107:
YY_RULE_SETUP
-#line 469 "scan.l"
+#line 519 "scan.l"
return (unsigned char) yytext[0];
YY_BREAK
case 108:
YY_RULE_SETUP
-#line 470 "scan.l"
+#line 520 "scan.l"
RETURNCHAR;
YY_BREAK
case 109:
YY_RULE_SETUP
-#line 475 "scan.l"
+#line 525 "scan.l"
return (unsigned char) yytext[0];
YY_BREAK
case 110:
YY_RULE_SETUP
-#line 476 "scan.l"
+#line 526 "scan.l"
BEGIN(SECT2); return '>';
YY_BREAK
case 111:
@@ -2350,17 +2413,17 @@
yy_c_buf_p = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 477 "scan.l"
+#line 527 "scan.l"
BEGIN(CARETISBOL); return '>';
YY_BREAK
case 112:
YY_RULE_SETUP
-#line 478 "scan.l"
+#line 528 "scan.l"
RETURNNAME;
YY_BREAK
case 113:
YY_RULE_SETUP
-#line 479 "scan.l"
+#line 529 "scan.l"
{
format_synerr( _( "bad <start condition>: %s" ),
yytext );
@@ -2369,23 +2432,23 @@
case 114:
YY_RULE_SETUP
-#line 485 "scan.l"
+#line 535 "scan.l"
BEGIN(SECT2); return '^';
YY_BREAK
case 115:
YY_RULE_SETUP
-#line 489 "scan.l"
+#line 539 "scan.l"
RETURNCHAR;
YY_BREAK
case 116:
YY_RULE_SETUP
-#line 490 "scan.l"
+#line 540 "scan.l"
BEGIN(SECT2); return '"';
YY_BREAK
case 117:
YY_RULE_SETUP
-#line 492 "scan.l"
+#line 542 "scan.l"
{
synerr( _( "missing quote" ) );
BEGIN(SECT2);
@@ -2400,7 +2463,7 @@
yy_c_buf_p = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 502 "scan.l"
+#line 552 "scan.l"
BEGIN(CCL); return '^';
YY_BREAK
case 119:
@@ -2408,12 +2471,12 @@
yy_c_buf_p = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 503 "scan.l"
+#line 553 "scan.l"
return '^';
YY_BREAK
case 120:
YY_RULE_SETUP
-#line 504 "scan.l"
+#line 554 "scan.l"
BEGIN(CCL); RETURNCHAR;
YY_BREAK
@@ -2423,22 +2486,22 @@
yy_c_buf_p = yy_cp = yy_bp + 1;
YY_DO_BEFORE_ACTION; /* set up yytext again */
YY_RULE_SETUP
-#line 508 "scan.l"
+#line 558 "scan.l"
return '-';
YY_BREAK
case 122:
YY_RULE_SETUP
-#line 509 "scan.l"
+#line 559 "scan.l"
RETURNCHAR;
YY_BREAK
case 123:
YY_RULE_SETUP
-#line 510 "scan.l"
+#line 560 "scan.l"
BEGIN(SECT2); return ']';
YY_BREAK
case 124:
YY_RULE_SETUP
-#line 511 "scan.l"
+#line 561 "scan.l"
{
synerr( _( "bad character class" ) );
BEGIN(SECT2);
@@ -2449,67 +2512,67 @@
case 125:
YY_RULE_SETUP
-#line 519 "scan.l"
+#line 569 "scan.l"
BEGIN(CCL); return CCE_ALNUM;
YY_BREAK
case 126:
YY_RULE_SETUP
-#line 520 "scan.l"
+#line 570 "scan.l"
BEGIN(CCL); return CCE_ALPHA;
YY_BREAK
case 127:
YY_RULE_SETUP
-#line 521 "scan.l"
+#line 571 "scan.l"
BEGIN(CCL); return CCE_BLANK;
YY_BREAK
case 128:
YY_RULE_SETUP
-#line 522 "scan.l"
+#line 572 "scan.l"
BEGIN(CCL); return CCE_CNTRL;
YY_BREAK
case 129:
YY_RULE_SETUP
-#line 523 "scan.l"
+#line 573 "scan.l"
BEGIN(CCL); return CCE_DIGIT;
YY_BREAK
case 130:
YY_RULE_SETUP
-#line 524 "scan.l"
+#line 574 "scan.l"
BEGIN(CCL); return CCE_GRAPH;
YY_BREAK
case 131:
YY_RULE_SETUP
-#line 525 "scan.l"
+#line 575 "scan.l"
BEGIN(CCL); return CCE_LOWER;
YY_BREAK
case 132:
YY_RULE_SETUP
-#line 526 "scan.l"
+#line 576 "scan.l"
BEGIN(CCL); return CCE_PRINT;
YY_BREAK
case 133:
YY_RULE_SETUP
-#line 527 "scan.l"
+#line 577 "scan.l"
BEGIN(CCL); return CCE_PUNCT;
YY_BREAK
case 134:
YY_RULE_SETUP
-#line 528 "scan.l"
+#line 578 "scan.l"
BEGIN(CCL); return CCE_SPACE;
YY_BREAK
case 135:
YY_RULE_SETUP
-#line 529 "scan.l"
+#line 579 "scan.l"
BEGIN(CCL); return CCE_UPPER;
YY_BREAK
case 136:
YY_RULE_SETUP
-#line 530 "scan.l"
+#line 580 "scan.l"
BEGIN(CCL); return CCE_XDIGIT;
YY_BREAK
case 137:
YY_RULE_SETUP
-#line 531 "scan.l"
+#line 581 "scan.l"
{
format_synerr(
_( "bad character class expression: %s" ),
@@ -2521,7 +2584,7 @@
case 138:
YY_RULE_SETUP
-#line 540 "scan.l"
+#line 590 "scan.l"
{
yylval = myctoi( yytext );
return NUMBER;
@@ -2529,17 +2592,17 @@
YY_BREAK
case 139:
YY_RULE_SETUP
-#line 545 "scan.l"
+#line 595 "scan.l"
return ',';
YY_BREAK
case 140:
YY_RULE_SETUP
-#line 546 "scan.l"
+#line 596 "scan.l"
BEGIN(SECT2); return '}';
YY_BREAK
case 141:
YY_RULE_SETUP
-#line 548 "scan.l"
+#line 598 "scan.l"
{
synerr( _( "bad character inside {}'s" ) );
BEGIN(SECT2);
@@ -2548,7 +2611,7 @@
YY_BREAK
case 142:
YY_RULE_SETUP
-#line 554 "scan.l"
+#line 604 "scan.l"
{
synerr( _( "missing }" ) );
BEGIN(SECT2);
@@ -2560,18 +2623,18 @@
case 143:
YY_RULE_SETUP
-#line 564 "scan.l"
+#line 614 "scan.l"
bracelevel = 0;
YY_BREAK
case 144:
YY_RULE_SETUP
-#line 566 "scan.l"
+#line 616 "scan.l"
ACTION_ECHO; yy_push_state( COMMENT );
YY_BREAK
case 145:
YY_RULE_SETUP
-#line 569 "scan.l"
+#line 619 "scan.l"
{
ACTION_ECHO;
CHECK_REJECT(yytext);
@@ -2579,7 +2642,7 @@
YY_BREAK
case 146:
YY_RULE_SETUP
-#line 573 "scan.l"
+#line 623 "scan.l"
{
ACTION_ECHO;
CHECK_YYMORE(yytext);
@@ -2588,12 +2651,12 @@
case 147:
YY_RULE_SETUP
-#line 579 "scan.l"
+#line 629 "scan.l"
ACTION_ECHO;
YY_BREAK
case 148:
YY_RULE_SETUP
-#line 580 "scan.l"
+#line 630 "scan.l"
{
++linenum;
ACTION_ECHO;
@@ -2613,37 +2676,37 @@
case 149:
YY_RULE_SETUP
-#line 598 "scan.l"
+#line 648 "scan.l"
ACTION_ECHO; ++bracelevel;
YY_BREAK
case 150:
YY_RULE_SETUP
-#line 599 "scan.l"
+#line 649 "scan.l"
ACTION_ECHO; --bracelevel;
YY_BREAK
case 151:
YY_RULE_SETUP
-#line 600 "scan.l"
+#line 650 "scan.l"
ACTION_ECHO;
YY_BREAK
case 152:
YY_RULE_SETUP
-#line 601 "scan.l"
+#line 651 "scan.l"
ACTION_ECHO;
YY_BREAK
case 153:
YY_RULE_SETUP
-#line 602 "scan.l"
+#line 652 "scan.l"
ACTION_ECHO; /* character constant */
YY_BREAK
case 154:
YY_RULE_SETUP
-#line 603 "scan.l"
+#line 653 "scan.l"
ACTION_ECHO; BEGIN(ACTION_STRING);
YY_BREAK
case 155:
YY_RULE_SETUP
-#line 604 "scan.l"
+#line 654 "scan.l"
{
++linenum;
ACTION_ECHO;
@@ -2659,41 +2722,41 @@
YY_BREAK
case 156:
YY_RULE_SETUP
-#line 616 "scan.l"
+#line 666 "scan.l"
ACTION_ECHO;
YY_BREAK
case 157:
YY_RULE_SETUP
-#line 620 "scan.l"
+#line 670 "scan.l"
ACTION_ECHO;
YY_BREAK
case 158:
YY_RULE_SETUP
-#line 621 "scan.l"
+#line 671 "scan.l"
ACTION_ECHO;
YY_BREAK
case 159:
YY_RULE_SETUP
-#line 622 "scan.l"
+#line 672 "scan.l"
++linenum; ACTION_ECHO;
YY_BREAK
case 160:
YY_RULE_SETUP
-#line 623 "scan.l"
+#line 673 "scan.l"
ACTION_ECHO; BEGIN(ACTION);
YY_BREAK
case 161:
YY_RULE_SETUP
-#line 624 "scan.l"
+#line 674 "scan.l"
ACTION_ECHO;
YY_BREAK
case YY_STATE_EOF(COMMENT):
case YY_STATE_EOF(ACTION):
case YY_STATE_EOF(ACTION_STRING):
-#line 627 "scan.l"
+#line 677 "scan.l"
{
synerr( _( "EOF encountered inside an action" ) );
yyterminate();
@@ -2701,7 +2764,7 @@
YY_BREAK
case 162:
YY_RULE_SETUP
-#line 633 "scan.l"
+#line 683 "scan.l"
{
yylval = myesc( (Char *) yytext );
@@ -2714,25 +2777,25 @@
case 163:
YY_RULE_SETUP
-#line 644 "scan.l"
+#line 694 "scan.l"
ECHO;
YY_BREAK
case YY_STATE_EOF(SECT3):
-#line 645 "scan.l"
+#line 695 "scan.l"
sectnum = 0; yyterminate();
YY_BREAK
case 164:
YY_RULE_SETUP
-#line 648 "scan.l"
+#line 698 "scan.l"
format_synerr( _( "bad character: %s" ), yytext );
YY_BREAK
case 165:
YY_RULE_SETUP
-#line 650 "scan.l"
+#line 700 "scan.l"
YY_FATAL_ERROR( "flex scanner jammed" );
YY_BREAK
-#line 2736 "scan.c"
+#line 2799 "scan.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(SECT2):
case YY_STATE_EOF(CODEBLOCK):
@@ -3311,11 +3374,15 @@
}
+#ifndef _WIN32
+#include <unistd.h>
+#else
#ifndef YY_ALWAYS_INTERACTIVE
#ifndef YY_NEVER_INTERACTIVE
extern int isatty YY_PROTO(( int ));
#endif
#endif
+#endif
#ifdef YY_USE_PROTOS
void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
@@ -3633,7 +3700,7 @@
return 0;
}
#endif
-#line 650 "scan.l"
+#line 700 "scan.l"
--
The devil can cite Scripture for his purpose. William Shakespeare,
"The Merchant of Venice"
Manoj Srivastava <[EMAIL PROTECTED]> <http://www.golden-gryphon.com/>
1024R/C7261095 print CB D9 F4 12 68 07 E4 05 CC 2D 27 12 1D F5 E8 6E
1024D/BF24424C print 4966 F272 D093 B493 410B 924B 21BA DABB BF24 424C
