1 /*
2 * Author: Karl MacMillan <kmacmillan@tresys.com>
3 *
4 * Copyright (C) 2006 Tresys Technology, LLC
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "parse_util.h"
22 #include "queue.h"
23
24 /* these are defined in policy_parse.y and are needed for read_source_policy */
25 extern FILE *yyin;
26 extern void init_parser(int);
27 extern int yyparse(void);
28 extern void yyrestart(FILE *);
29 extern queue_t id_queue;
30 extern unsigned int policydb_errors;
31 extern unsigned long policydb_lineno;
32 extern policydb_t *policydbp;
33 extern int mlspol;
34 extern void set_source_file(const char *name);
35
read_source_policy(policydb_t * p,const char * file,const char * progname)36 int read_source_policy(policydb_t * p, const char *file, const char *progname)
37 {
38 yyin = fopen(file, "r");
39 if (!yyin) {
40 fprintf(stderr, "%s: unable to open %s\n", progname, file);
41 return -1;
42 }
43 set_source_file(file);
44
45 if ((id_queue = queue_create()) == NULL) {
46 fprintf(stderr, "%s: out of memory!\n", progname);
47 return -1;
48 }
49
50 policydbp = p;
51 mlspol = p->mls;
52
53 init_parser(1);
54 if (yyparse() || policydb_errors) {
55 fprintf(stderr,
56 "%s: error(s) encountered while parsing configuration\n",
57 progname);
58 return -1;
59 }
60 rewind(yyin);
61 init_parser(2);
62 set_source_file(file);
63 yyrestart(yyin);
64 if (yyparse() || policydb_errors) {
65 fprintf(stderr,
66 "%s: error(s) encountered while parsing configuration\n",
67 progname);
68 return -1;
69 }
70 queue_destroy(id_queue);
71
72 if (policydb_errors)
73 return -1;
74
75 fclose(yyin);
76
77 return 0;
78 }
79