Initial revision

diff --git a/parse.lex b/parse.lex
new file mode 100644 (file)
index 0000000..c68c1a5
--- /dev/null
+++ b/parse.lex
@@ -0,0 +1,55 @@
+%{
+/*
+ *  sudo version 1.1 allows users to execute commands as root
+ *  Copyright (C) 1991  The Root Group, Inc.
+ *
+ *  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.
+ *
+ *  If you make modifications to the source, we would be happy to have
+ *  them to include in future releases.  Feel free to send them to:
+ *      Jeff Nieusma                       nieusma@rootgroup.com
+ *      3959 Arbol CT                      (303) 447-8093
+ *      Boulder, CO 80301-1752             
+ */
+/*******************************************************************************
+* parse.lex, sudo project
+* David R. Hieb
+* March 18, 1991
+*
+* Lex Specification file for the sudo project.
+*******************************************************************************/
+#include <sys/types.h>
+#include "y.tab.h"
+#include "sudo.h"
+%}
+
+%%
+[ \t]+                 { ; }                     /* throw away space/tabs */
+\\\n                   { ; }                     /* throw away EOL after \ */
+\,                     { return ','; }           /* return ',' */
+\!                     { return '!'; }           /* return '!' */
+=                      { return '='; }           /* return '=' */
+:                      { return ':'; }           /* return ':' */
+\n                     { return COMMENT; }       /* return newline */
+#.*\n                  { return COMMENT; }       /* return comments */
+[@$%^&*()"'`/_+]*      { return ERROR; }         /* return error */
+[?;<>\[\]{}|~.-]*      { return ERROR; }         /* return error */
+^[a-zA-Z0-9_-]+                { fill(); return IDENT1;} /* user/{Host,Cmnd}_Alias */
+[a-zA-Z0-9_.+-]+       { fill(); return IDENT2;} /* host_type/ALIASES */
+(\/[a-zA-Z0-9_.+-]+)+  { fill(); return IDENT3;} /* absolute command path */
+%%
+fill() {
+strcpy(yylval.char_val, yytext);
+}

diff --git a/parse.yacc b/parse.yacc
new file mode 100644 (file)
index 0000000..c4b85d2
--- /dev/null
+++ b/parse.yacc
@@ -0,0 +1,99 @@
+%{
+/*
+ *  sudo version 1.1 allows users to execute commands as root
+ *  Copyright (C) 1991  The Root Group, Inc.
+ *
+ *  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.
+ *
+ *  If you make modifications to the source, we would be happy to have
+ *  them to include in future releases.  Feel free to send them to:
+ *      Jeff Nieusma                       nieusma@rootgroup.com
+ *      3959 Arbol CT                      (303) 447-8093
+ *      Boulder, CO 80301-1752             
+ */
+/*******************************************************************************
+* parse.yacc, sudo project
+* David R. Hieb
+* March 18, 1991
+*
+* Yacc Specification file for the sudo project.
+*******************************************************************************/
+#include <stdio.h>
+#include <sys/types.h>
+#include "sudo.h"
+
+extern int yylineno;
+extern int parse_error, found_user;
+
+yyerror(s)
+char *s;
+{
+fprintf(stderr, ">>> sudoers file: %s, line %d <<<\n", s, yylineno);
+parse_error = TRUE;
+}
+
+yywrap()
+{
+return(1);
+}
+%}
+
+%start file                            /* special start symbol */
+%token <char_val> IDENT1               /* identifier type 1*/
+%token <char_val> IDENT2               /* identifier type 2*/
+%token <char_val> IDENT3               /* identifier type 3*/
+%token <int_val>  COMMENT              /* comment and/or carriage return */
+%token <int_val>  ERROR                        /* error character(s) */
+%token <int_val> ':' '=' ',' '!'       /* union member tokens */
+%%
+file           :       entry
+               |       file entry
+               ;
+
+entry          :       COMMENT
+                |       error COMMENT
+                       { yyerrok; }
+               |       IDENT1 access_series COMMENT
+                       { if (call_back(TYPE1, ' ', $1) == FOUND_USER) {
+                               found_user = TRUE;
+                               return(FOUND_USER);
+                               }
+                         else {
+                               found_user = FALSE;
+                               } }
+               ;
+
+access_series  :       access_group
+               |       access_series ':' access_group
+               ;
+
+access_group   :       IDENT2 '=' cmnd_list
+                       { call_back(TYPE2, ' ', $1); }
+               ;
+
+cmnd_list      :       cmnd_type
+               |       cmnd_list ',' cmnd_type
+               ;
+
+cmnd_type      :       IDENT3
+                       { call_back(TYPE3, ' ', $1); }
+               |       '!' IDENT3
+                       { call_back(TYPE3, '!', $2); }
+               |       IDENT2
+                       { call_back(TYPE3, ' ', $1); }
+               |       '!' IDENT2
+                       { call_back(TYPE3, '!', $2); }
+               ;
+%%