1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
4#include <string.h>
5#include <errno.h>
6#include <ctype.h>
7
8struct security_class_mapping {
9	const char *name;
10	const char *perms[sizeof(unsigned) * 8 + 1];
11};
12
13#include "classmap.h"
14#include "initial_sid_to_string.h"
15
16#define max(x, y) (((int)(x) > (int)(y)) ? x : y)
17
18const char *progname;
19
20static void usage(void)
21{
22	printf("usage: %s flask.h av_permissions.h\n", progname);
23	exit(1);
24}
25
26static char *stoupperx(const char *s)
27{
28	char *s2 = strdup(s);
29	char *p;
30
31	if (!s2) {
32		fprintf(stderr, "%s:  out of memory\n", progname);
33		exit(3);
34	}
35
36	for (p = s2; *p; p++)
37		*p = toupper(*p);
38	return s2;
39}
40
41int main(int argc, char *argv[])
42{
43	int i, j, k;
44	int isids_len;
45	FILE *fout;
46	const char *needle = "SOCKET";
47	char *substr;
48
49	progname = argv[0];
50
51	if (argc < 3)
52		usage();
53
54	fout = fopen(argv[1], "w");
55	if (!fout) {
56		fprintf(stderr, "Could not open %s for writing:  %s\n",
57			argv[1], strerror(errno));
58		exit(2);
59	}
60
61	for (i = 0; secclass_map[i].name; i++) {
62		struct security_class_mapping *map = &secclass_map[i];
63		map->name = stoupperx(map->name);
64		for (j = 0; map->perms[j]; j++)
65			map->perms[j] = stoupperx(map->perms[j]);
66	}
67
68	isids_len = sizeof(initial_sid_to_string) / sizeof (char *);
69	for (i = 1; i < isids_len; i++)
70		initial_sid_to_string[i] = stoupperx(initial_sid_to_string[i]);
71
72	fprintf(fout, "/* This file is automatically generated.  Do not edit. */\n");
73	fprintf(fout, "#ifndef _SELINUX_FLASK_H_\n#define _SELINUX_FLASK_H_\n\n");
74
75	for (i = 0; secclass_map[i].name; i++) {
76		struct security_class_mapping *map = &secclass_map[i];
77		fprintf(fout, "#define SECCLASS_%s", map->name);
78		for (j = 0; j < max(1, 40 - strlen(map->name)); j++)
79			fprintf(fout, " ");
80		fprintf(fout, "%2d\n", i+1);
81	}
82
83	fprintf(fout, "\n");
84
85	for (i = 1; i < isids_len; i++) {
86		const char *s = initial_sid_to_string[i];
87		fprintf(fout, "#define SECINITSID_%s", s);
88		for (j = 0; j < max(1, 40 - strlen(s)); j++)
89			fprintf(fout, " ");
90		fprintf(fout, "%2d\n", i);
91	}
92	fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1);
93	fprintf(fout, "\nstatic inline bool security_is_socket_class(u16 kern_tclass)\n");
94	fprintf(fout, "{\n");
95	fprintf(fout, "\tbool sock = false;\n\n");
96	fprintf(fout, "\tswitch (kern_tclass) {\n");
97	for (i = 0; secclass_map[i].name; i++) {
98		struct security_class_mapping *map = &secclass_map[i];
99		substr = strstr(map->name, needle);
100		if (substr && strcmp(substr, needle) == 0)
101			fprintf(fout, "\tcase SECCLASS_%s:\n", map->name);
102	}
103	fprintf(fout, "\t\tsock = true;\n");
104	fprintf(fout, "\t\tbreak;\n");
105	fprintf(fout, "\tdefault:\n");
106	fprintf(fout, "\t\tbreak;\n");
107	fprintf(fout, "\t}\n\n");
108	fprintf(fout, "\treturn sock;\n");
109	fprintf(fout, "}\n");
110
111	fprintf(fout, "\n#endif\n");
112	fclose(fout);
113
114	fout = fopen(argv[2], "w");
115	if (!fout) {
116		fprintf(stderr, "Could not open %s for writing:  %s\n",
117			argv[2], strerror(errno));
118		exit(4);
119	}
120
121	fprintf(fout, "/* This file is automatically generated.  Do not edit. */\n");
122	fprintf(fout, "#ifndef _SELINUX_AV_PERMISSIONS_H_\n#define _SELINUX_AV_PERMISSIONS_H_\n\n");
123
124	for (i = 0; secclass_map[i].name; i++) {
125		struct security_class_mapping *map = &secclass_map[i];
126		for (j = 0; map->perms[j]; j++) {
127			fprintf(fout, "#define %s__%s", map->name,
128				map->perms[j]);
129			for (k = 0; k < max(1, 40 - strlen(map->name) - strlen(map->perms[j])); k++)
130				fprintf(fout, " ");
131			fprintf(fout, "0x%08xUL\n", (1<<j));
132		}
133	}
134
135	fprintf(fout, "\n#endif\n");
136	fclose(fout);
137	exit(0);
138}
139