| # Authors: Karl MacMillan <kmacmillan@mentalrootkit.com> |
| # |
| # Copyright (C) 2006 Red Hat |
| # see file 'COPYING' for use and warranty information |
| # |
| # 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; version 2 only |
| # |
| # 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| # |
| import sys |
| |
| tokens = ('DEFINE', |
| 'NAME', |
| 'TICK', |
| 'SQUOTE', |
| 'OBRACE', |
| 'CBRACE', |
| 'SEMI', |
| 'OPAREN', |
| 'CPAREN', |
| 'COMMA') |
| |
| reserved = { |
| 'define' : 'DEFINE' } |
| |
| t_TICK = r'\`' |
| t_SQUOTE = r'\'' |
| t_OBRACE = r'\{' |
| t_CBRACE = r'\}' |
| t_SEMI = r'\;' |
| t_OPAREN = r'\(' |
| t_CPAREN = r'\)' |
| t_COMMA = r'\,' |
| |
| t_ignore = " \t\n" |
| |
| def t_NAME(t): |
| r'[a-zA-Z_][a-zA-Z0-9_]*' |
| t.type = reserved.get(t.value,'NAME') |
| return t |
| |
| def t_error(t): |
| print "Illegal character '%s'" % t.value[0] |
| t.skip(1) |
| |
| import lex |
| lex.lex() |
| |
| def p_statements(p): |
| '''statements : define_stmt |
| | define_stmt statements |
| ''' |
| if len(p) == 2: |
| p[0] = [p[1]] |
| else: |
| p[0] = [p[1]] + [p[2]] |
| |
| def p_define_stmt(p): |
| # This sucks - corresponds to 'define(`foo',`{ read write }') |
| '''define_stmt : DEFINE OPAREN TICK NAME SQUOTE COMMA TICK list SQUOTE CPAREN |
| ''' |
| |
| p[0] = [p[4], p[8]] |
| |
| def p_list(p): |
| '''list : NAME |
| | OBRACE names CBRACE |
| ''' |
| if p[1] == "{": |
| p[0] = p[2] |
| else: |
| p[0] = [p[1]] |
| |
| def p_names(p): |
| '''names : NAME |
| | NAME names |
| ''' |
| if len(p) == 2: |
| p[0] = [p[1]] |
| else: |
| p[0] = [p[1]] + p[2] |
| |
| def p_error(p): |
| print "Syntax error on line %d %s [type=%s]" % (p.lineno, p.value, p.type) |
| |
| import yacc |
| yacc.yacc() |
| |
| |
| f = open("all_perms.spt") |
| txt = f.read() |
| f.close() |
| |
| #lex.input(txt) |
| #while 1: |
| # tok = lex.token() |
| # if not tok: |
| # break |
| # print tok |
| |
| test = "define(`foo',`{ read write append }')" |
| test2 = """define(`all_filesystem_perms',`{ mount remount unmount getattr relabelfrom relabelto transition associate quotamod quotaget }') |
| define(`all_security_perms',`{ compute_av compute_create compute_member check_context load_policy compute_relabel compute_user setenforce setbool setsecparam setcheckreqprot }') |
| """ |
| result = yacc.parse(txt) |
| print result |
| |