static const security_context_t
selinux_get_user_context(const char *name)
{
security_context_t user_context=NULL;
char *role=NULL;
int ret = -1;
char *seuser=NULL;
char *level=NULL;
if (the_authctxt)
role=the_authctxt->role;
if (getseuserbyname(name, &seuser, &level)==0) {
if (role != NULL && role[0])
ret=get_default_context_with_rolelevel(seuser, role, level,NULL,
&user_context);
else
ret=get_default_context_with_level(seuser, level, NULL,&user_context);
}
if ( ret < 0 ) {
if (security_getenforce() > 0)
fatal("Failed to get default security context for %s.",
name);
else
error("Failed to get default security context for %s."
"Continuing in permissive mode",
name);
}
return user_context;
}
int main(int argc, char **argv)
{
security_context_t usercon = NULL, cur_context = NULL;
char *user = NULL, *level = NULL, *role=NULL, *seuser=NULL, *dlevel=NULL;
char *service = NULL;
int ret, opt;
int verbose = 0;
while ((opt = getopt(argc, argv, "l:r:s:v")) > 0) {
switch (opt) {
case 'l':
level = strdup(optarg);
break;
case 'r':
role = strdup(optarg);
break;
case 's':
service = strdup(optarg);
break;
case 'v':
verbose = 1;
break;
default:
usage(argv[0], "invalid option", 1);
}
}
if (((argc - optind) < 1) || ((argc - optind) > 2))
usage(argv[0], "invalid number of arguments", 2);
/* If selinux isn't available, bail out. */
if (!is_selinux_enabled()) {
fprintf(stderr,
"%s may be used only on a SELinux kernel.\n", argv[0]);
return 1;
}
user = argv[optind];
/* If a context wasn't passed, use the current context. */
if (((argc - optind) < 2)) {
if (getcon(&cur_context) < 0) {
fprintf(stderr, "Couldn't get current context.\n");
return 2;
}
} else
cur_context = argv[optind + 1];
if ((ret = getseuser(user, service, &seuser, &dlevel)) == 0) {
if (! level) level=dlevel;
if (role != NULL && role[0])
ret=get_default_context_with_rolelevel(seuser, role, level,cur_context,&usercon);
else
ret=get_default_context_with_level(seuser, level, cur_context,&usercon);
}
if (ret < 0)
perror(argv[0]);
else {
if (verbose) {
printf("%s: %s from %s %s %s %s -> %s\n", argv[0], user, cur_context, seuser, role, level, usercon);
} else {
printf("%s\n", usercon);
}
}
free(role);
free(seuser);
if (level != dlevel) free(level);
free(dlevel);
free(usercon);
return ret >= 0;
}
