static int get_failsafe_context(const char *user, security_context_t * newcon)
{
FILE *fp;
char buf[255], *ptr;
size_t plen, nlen;
int rc;
fp = fopen(selinux_failsafe_context_path(), "r");
if (!fp)
return -1;
ptr = fgets_unlocked(buf, sizeof buf, fp);
fclose(fp);
if (!ptr)
return -1;
plen = strlen(ptr);
if (buf[plen - 1] == '\n')
buf[plen - 1] = 0;
retry:
nlen = strlen(user) + 1 + plen + 1;
*newcon = malloc(nlen);
if (!(*newcon))
return -1;
rc = snprintf(*newcon, nlen, "%s:%s", user, ptr);
if (rc < 0 || (size_t) rc >= nlen) {
free(*newcon);
*newcon = 0;
return -1;
}
/* If possible, check the context to catch
errors early rather than waiting until the
caller tries to use setexeccon on the context.
But this may not always be possible, e.g. if
selinuxfs isn't mounted. */
if (security_check_context(*newcon) && errno != ENOENT) {
free(*newcon);
*newcon = 0;
if (strcmp(user, SELINUX_DEFAULTUSER)) {
user = SELINUX_DEFAULTUSER;
goto retry;
}
return -1;
}
return 0;
}
static JSBool
rpmsx_getprop(JSContext *cx, JSObject *obj, jsid id, jsval *vp)
{
void * ptr = JS_GetInstancePrivate(cx, obj, &rpmsxClass, NULL);
jsint tiny = JSVAL_TO_INT(id);
#if defined(WITH_SELINUX)
security_context_t con = NULL;
#endif
/* XXX the class has ptr == NULL, instances have ptr != NULL. */
if (ptr == NULL)
return JS_TRUE;
switch (tiny) {
case _DEBUG:
*vp = INT_TO_JSVAL(_debug);
break;
#if defined(WITH_SELINUX)
case _CURRENT: *vp = _GET_CON(!getcon(&con)); break;
case _PID: *vp = _GET_CON(!getpidcon(getpid(), &con)); break;
case _PPID: *vp = _GET_CON(!getpidcon(getppid(), &con)); break;
case _PREV: *vp = _GET_CON(!getprevcon(&con)); break;
case _EXEC: *vp = _GET_CON(!getexeccon(&con)); break;
case _FSCREATE: *vp = _GET_CON(!getfscreatecon(&con)); break;
case _KEYCREATE: *vp = _GET_CON(!getkeycreatecon(&con)); break;
case _SOCKCREATE: *vp = _GET_CON(!getsockcreatecon(&con)); break;
case _ENFORCE: *vp = INT_TO_JSVAL(security_getenforce()); break;
case _DENY: *vp = INT_TO_JSVAL(security_deny_unknown()); break;
case _POLICYVERS: *vp = INT_TO_JSVAL(security_policyvers()); break;
case _ENABLED: *vp = INT_TO_JSVAL(is_selinux_enabled()); break;
case _MLSENABLED: *vp = INT_TO_JSVAL(is_selinux_mls_enabled()); break;
#ifdef NOTYET
case _BOOLS: *vp = ; break;
#endif
case _ROOT: *vp = _GET_STR(selinux_policy_root()); break;
case _BINARY: *vp = _GET_STR(selinux_binary_policy_path()); break;
case _FAILSAFE: *vp = _GET_STR(selinux_failsafe_context_path());break;
case _REMOVABLE: *vp = _GET_STR(selinux_removable_context_path());break;
case _DEFAULT: *vp = _GET_STR(selinux_default_context_path()); break;
case _USER: *vp = _GET_STR(selinux_user_contexts_path()); break;
case _FCON: *vp = _GET_STR(selinux_file_context_path()); break;
case _FCONHOME: *vp = _GET_STR(selinux_file_context_homedir_path());break;
case _FCONLOCAL: *vp = _GET_STR(selinux_file_context_local_path());break;
case _FCONSUBS: *vp = _GET_STR(selinux_file_context_subs_path());break;
case _HOMEDIR: *vp = _GET_STR(selinux_homedir_context_path()); break;
case _MEDIA: *vp = _GET_STR(selinux_media_context_path()); break;
case _VIRTDOMAIN: *vp = _GET_STR(selinux_virtual_domain_context_path());break;
case _VIRTIMAGE: *vp = _GET_STR(selinux_virtual_image_context_path());break;
case _X: *vp = _GET_STR(selinux_x_context_path()); break;
case _CONTEXTS: *vp = _GET_STR(selinux_contexts_path()); break;
case _SECURETTY: *vp = _GET_STR(selinux_securetty_types_path()); break;
case _BOOLEANS: *vp = _GET_STR(selinux_booleans_path()); break;
case _CUSTOMTYPES: *vp = _GET_STR(selinux_customizable_types_path());break;
case _USERS: *vp = _GET_STR(selinux_users_path()); break;
case _USERSCONF: *vp = _GET_STR(selinux_usersconf_path()); break;
case _XLATIONS: *vp = _GET_STR(selinux_translations_path()); break;
case _COLORS: *vp = _GET_STR(selinux_colors_path()); break;
case _NETFILTER: *vp = _GET_STR(selinux_netfilter_context_path());break;
case _PATH: *vp = _GET_STR(selinux_path()); break;
#endif
default:
break;
}
#if defined(WITH_SELINUX)
if (con) {
freecon(con);
con = NULL;
}
#endif
return JS_TRUE;
}