196 lines
3.8 KiB
Plaintext
196 lines
3.8 KiB
Plaintext
%{
|
|
/*
|
|
* CU sudo version 1.3.1
|
|
*
|
|
* 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* Please send bugs, changes, problems to sudo-bugs@cs.colorado.edu
|
|
*
|
|
*******************************************************************
|
|
*
|
|
* parse.lex -- lexigraphical analyzer for sudo.
|
|
*
|
|
* Chris Jepeway <jepeway@cs.utk.edu>
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char rcsid[] = "$Id$";
|
|
#endif /* lint */
|
|
|
|
#include "config.h"
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif /* HAVE_UNISTD_H */
|
|
#include <ctype.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <netinet/in.h>
|
|
#include "sudo.h"
|
|
#include "options.h"
|
|
#include "y.tab.h"
|
|
|
|
#undef yywrap /* guard against a yywrap macro */
|
|
|
|
extern YYSTYPE yylval;
|
|
extern int clearaliases;
|
|
int sudolineno = 1;
|
|
|
|
static void fill __P((void));
|
|
static void append __P((void));
|
|
extern void reset_aliases __P((void));
|
|
|
|
#ifdef TRACELEXER
|
|
#define LEXTRACE(msg) fputs(msg, stderr)
|
|
#else
|
|
#define LEXTRACE(msg)
|
|
#endif
|
|
%}
|
|
|
|
N [0-9][0-9]?[0-9]?
|
|
|
|
%e 4000
|
|
%p 6000
|
|
%k 3500
|
|
|
|
%s GOTCMND
|
|
|
|
%%
|
|
[ \t]+ { ; } /* throw away space/tabs */
|
|
|
|
\\\n {
|
|
++sudolineno;
|
|
LEXTRACE("\n\t");
|
|
} /* throw away EOL after \ */
|
|
|
|
<GOTCMND>[:,=\n] {
|
|
BEGIN 0;
|
|
unput(yytext[0]);
|
|
return(PATH);
|
|
} /* end of command line args */
|
|
|
|
\n {
|
|
++sudolineno;
|
|
LEXTRACE("\n");
|
|
return COMMENT;
|
|
} /* return newline */
|
|
|
|
#.*\n {
|
|
++sudolineno;
|
|
LEXTRACE("\n");
|
|
return COMMENT;
|
|
} /* return comments */
|
|
|
|
<GOTCMND>[^\,:=\\ \t\n#]+ {
|
|
LEXTRACE("ARG ");
|
|
append();
|
|
} /* a command line arg */
|
|
|
|
\, {
|
|
LEXTRACE(", ");
|
|
return ',';
|
|
} /* return ',' */
|
|
|
|
\! { return '!'; } /* return '!' */
|
|
|
|
= {
|
|
LEXTRACE("= ");
|
|
return '=';
|
|
} /* return '=' */
|
|
|
|
: {
|
|
LEXTRACE(": ");
|
|
return ':';
|
|
} /* return ':' */
|
|
|
|
\. { return '.'; }
|
|
|
|
\+[a-zA-Z][a-zA-Z0-9_-]* {
|
|
fill();
|
|
return NETGROUP;
|
|
}
|
|
|
|
{N}\.{N}\.{N}\.{N} {
|
|
fill();
|
|
return NTWKADDR;
|
|
}
|
|
|
|
\/[^\,:=\\ \t\n#]+ {
|
|
BEGIN GOTCMND;
|
|
LEXTRACE("PATH ");
|
|
fill();
|
|
} /* a pathname */
|
|
|
|
[A-Z][A-Z0-9_]* {
|
|
fill();
|
|
if (strcmp(yytext, "ALL") == 0) {
|
|
LEXTRACE("ALL ");
|
|
return ALL;
|
|
}
|
|
LEXTRACE("ALIAS ");
|
|
return ALIAS;
|
|
}
|
|
|
|
[a-zA-Z][a-zA-Z0-9_-]* {
|
|
int l;
|
|
|
|
fill();
|
|
if (strcmp(yytext, "Host_Alias") == 0) {
|
|
LEXTRACE("HOSTALIAS ");
|
|
return HOSTALIAS;
|
|
}
|
|
if (strcmp(yytext, "Cmnd_Alias") == 0) {
|
|
LEXTRACE("CMNDALIAS ");
|
|
return CMNDALIAS;
|
|
}
|
|
if (strcmp(yytext, "User_Alias") == 0) {
|
|
LEXTRACE("USERALIAS ");
|
|
return USERALIAS;
|
|
}
|
|
|
|
l = strlen(yytext) - 1;
|
|
if (isalpha(yytext[l]) || isdigit(yytext[l])) {
|
|
/* NAME is what RFC1034 calls a label */
|
|
LEXTRACE("NAME ");
|
|
return NAME;
|
|
}
|
|
|
|
return ERROR;
|
|
}
|
|
|
|
. { return ERROR; } /* return error */
|
|
|
|
%%
|
|
static void fill() {
|
|
(void) strcpy(yylval.string, yytext);
|
|
}
|
|
|
|
static void append() {
|
|
(void) strcat(yylval.string, " ");
|
|
(void) strcat(yylval.string, yytext);
|
|
}
|
|
|
|
int yywrap()
|
|
{
|
|
#ifdef YY_NEW_FILE
|
|
YY_NEW_FILE;
|
|
#endif /* YY_NEW_FILE */
|
|
|
|
/* don't reset the aliases if called by testsudoers */
|
|
if (clearaliases)
|
|
reset_aliases();
|
|
|
|
return(1);
|
|
}
|