grub_err_t
grub_auth_authenticate (const char *user)
{
struct grub_auth_user *cur;
cur = grub_named_list_find (GRUB_AS_NAMED_LIST (users), user);
if (!cur)
cur = grub_zalloc (sizeof (*cur));
if (!cur)
return grub_errno;
cur->authenticated = 1;
if (! cur->name)
{
cur->name = grub_strdup (user);
if (!cur->name)
{
grub_free (cur);
return grub_errno;
}
grub_list_push (GRUB_AS_LIST_P (&users), GRUB_AS_LIST (cur));
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_auth_register_authentication (const char *user,
grub_auth_callback_t callback,
void *arg)
{
struct grub_auth_user *cur;
cur = grub_named_list_find (GRUB_AS_NAMED_LIST (users), user);
if (!cur)
cur = grub_zalloc (sizeof (*cur));
if (!cur)
return grub_errno;
cur->callback = callback;
cur->arg = arg;
if (! cur->name)
{
cur->name = grub_strdup (user);
if (!cur->name)
{
grub_free (cur);
return grub_errno;
}
grub_list_push (GRUB_AS_LIST_P (&users), GRUB_AS_LIST (cur));
}
return GRUB_ERR_NONE;
}
grub_err_t
grub_auth_deauthenticate (const char *user)
{
struct grub_auth_user *cur;
cur = grub_named_list_find (GRUB_AS_NAMED_LIST (users), user);
if (!cur)
return grub_error (GRUB_ERR_BAD_ARGUMENT, "user '%s' not found", user);
if (!cur->callback)
{
grub_free (cur->name);
grub_list_remove (GRUB_AS_LIST_P (&users), GRUB_AS_LIST (cur));
grub_free (cur);
}
else
cur->authenticated = 0;
return GRUB_ERR_NONE;
}
/* Check if DEVICE can be read. Skip any DEVICE that we have already seen.
If an error occurs, return zero, otherwise return non-zero. */
static int
check_device_readable_unique (const char *device)
{
char *real_device;
char buf[512];
FILE *fp;
struct seen_device *seen_elt;
/* If DEVICE is empty, just return error. */
if (*device == 0)
return 0;
/* Have we seen this device already? */
real_device = canonicalize_file_name (device);
if (! real_device)
return 0;
if (grub_named_list_find (GRUB_AS_NAMED_LIST (seen), real_device))
{
grub_dprintf ("deviceiter", "Already seen %s (%s)\n",
device, real_device);
goto fail;
}
fp = fopen (device, "r");
if (! fp)
{
switch (errno)
{
#ifdef ENOMEDIUM
case ENOMEDIUM:
# if 0
/* At the moment, this finds only CDROMs, which can't be
read anyway, so leave it out. Code should be
reactivated if `removable disks' and CDROMs are
supported. */
/* Accept it, it may be inserted. */
return 1;
# endif
break;
#endif /* ENOMEDIUM */
default:
/* Break case and leave. */
break;
}
/* Error opening the device. */
goto fail;
}
/* Make sure CD-ROMs don't get assigned a BIOS disk number
before SCSI disks! */
#ifdef __linux__
# ifdef CDROM_GET_CAPABILITY
if (ioctl (fileno (fp), CDROM_GET_CAPABILITY, 0) >= 0)
goto fail;
# else /* ! CDROM_GET_CAPABILITY */
/* Check if DEVICE is a CD-ROM drive by the HDIO_GETGEO ioctl. */
{
struct hd_geometry hdg;
struct stat st;
if (fstat (fileno (fp), &st))
goto fail;
/* If it is a block device and isn't a floppy, check if HDIO_GETGEO
succeeds. */
if (S_ISBLK (st.st_mode)
&& MAJOR (st.st_rdev) != FLOPPY_MAJOR
&& ioctl (fileno (fp), HDIO_GETGEO, &hdg))
goto fail;
}
# endif /* ! CDROM_GET_CAPABILITY */
#endif /* __linux__ */
#if defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
# ifdef CDIOCCLRDEBUG
if (ioctl (fileno (fp), CDIOCCLRDEBUG, 0) >= 0)
goto fail;
# endif /* CDIOCCLRDEBUG */
#endif /* __FreeBSD_kernel__ || __NetBSD__ || __OpenBSD__ */
/* Attempt to read the first sector. */
if (fread (buf, 1, 512, fp) != 512)
{
fclose (fp);
goto fail;
}
/* Remember that we've seen this device. */
seen_elt = xmalloc (sizeof (*seen_elt));
seen_elt->name = real_device; /* steal memory */
grub_list_push (GRUB_AS_LIST_P (&seen), GRUB_AS_LIST (seen_elt));
fclose (fp);
return 1;
fail:
free (real_device);
return 0;
}
static const char *
grub_gettext_translate (const char *orig)
{
char *current_string;
const char *ret;
int min, max, current;
int found = 0;
struct grub_gettext_msg *cur;
/* Make sure we can use grub_gettext_translate for error messages. Push
active error message to error stack and reset error message. */
grub_error_push ();
cur = grub_named_list_find (GRUB_AS_NAMED_LIST (grub_gettext_msg_list),
orig);
if (cur)
{
grub_error_pop ();
return cur->translated;
}
if (fd_mo == 0)
{
grub_error_pop ();
return orig;
}
min = 0;
max = grub_gettext_max;
current = (max + min) / 2;
while (current != min && current != max && found == 0)
{
current_string = grub_gettext_getstring_from_position (current);
/* Search by bisection. */
if (grub_strcmp (current_string, orig) < 0)
{
grub_free (current_string);
min = current;
}
else if (grub_strcmp (current_string, orig) > 0)
{
grub_free (current_string);
max = current;
}
else if (grub_strcmp (current_string, orig) == 0)
{
grub_free (current_string);
found = 1;
}
current = (max + min) / 2;
}
ret = found ? grub_gettext_gettranslation_from_position (current) : orig;
if (found)
{
cur = grub_zalloc (sizeof (*cur));
if (cur)
{
cur->name = grub_strdup (orig);
if (cur->name)
{
cur->translated = ret;
grub_list_push (GRUB_AS_LIST_P (&grub_gettext_msg_list),
GRUB_AS_LIST (cur));
}
}
else
grub_errno = GRUB_ERR_NONE;
}
grub_error_pop ();
return ret;
}
