static void
decode_unicode_ssetup(char **pbcc_area, int bleft, struct cifs_ses *ses,
const struct nls_table *nls_cp)
{
int len;
char *data = *pbcc_area;
cifs_dbg(FYI, "bleft %d\n", bleft);
kfree(ses->serverOS);
ses->serverOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
cifs_dbg(FYI, "serverOS=%s\n", ses->serverOS);
len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2;
data += len;
bleft -= len;
if (bleft <= 0)
return;
kfree(ses->serverNOS);
ses->serverNOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
cifs_dbg(FYI, "serverNOS=%s\n", ses->serverNOS);
len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2;
data += len;
bleft -= len;
if (bleft <= 0)
return;
kfree(ses->serverDomain);
ses->serverDomain = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
cifs_dbg(FYI, "serverDomain=%s\n", ses->serverDomain);
return;
}
static int decode_unicode_ssetup(char **pbcc_area, int bleft,
struct cifsSesInfo *ses,
const struct nls_table *nls_cp)
{
int rc = 0;
int words_left, len;
char *data = *pbcc_area;
cFYI(1, ("bleft %d", bleft));
/* SMB header is unaligned, so cifs servers word align start of
Unicode strings */
data++;
bleft--; /* Windows servers do not always double null terminate
their final Unicode string - in which case we
now will not attempt to decode the byte of junk
which follows it */
words_left = bleft / 2;
/* save off server operating system */
len = UniStrnlen((wchar_t *) data, words_left);
/* We look for obvious messed up bcc or strings in response so we do not go off
the end since (at least) WIN2K and Windows XP have a major bug in not null
terminating last Unicode string in response */
if (len >= words_left)
return rc;
kfree(ses->serverOS);
/* UTF-8 string will not grow more than four times as big as UCS-16 */
ses->serverOS = kzalloc(4 * len, GFP_KERNEL);
if (ses->serverOS != NULL)
cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp);
data += 2 * (len + 1);
words_left -= len + 1;
/* save off server network operating system */
len = UniStrnlen((wchar_t *) data, words_left);
if (len >= words_left)
return rc;
kfree(ses->serverNOS);
ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
if (ses->serverNOS != NULL) {
cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len,
nls_cp);
if (strncmp(ses->serverNOS, "NT LAN Manager 4", 16) == 0) {
cFYI(1, ("NT4 server"));
ses->flags |= CIFS_SES_NT4;
}
}
data += 2 * (len + 1);
words_left -= len + 1;
/* save off server domain */
len = UniStrnlen((wchar_t *) data, words_left);
if (len > words_left)
return rc;
kfree(ses->serverDomain);
ses->serverDomain = kzalloc(2 * (len + 1), GFP_KERNEL); /* BB FIXME wrong length */
if (ses->serverDomain != NULL) {
cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len,
nls_cp);
ses->serverDomain[2*len] = 0;
ses->serverDomain[(2*len) + 1] = 0;
}
data += 2 * (len + 1);
words_left -= len + 1;
cFYI(1, ("words left: %d", words_left));
return rc;
}
static int decode_unicode_ssetup(char **pbcc_area, int bleft,
struct cifsSesInfo *ses,
const struct nls_table *nls_cp)
{
int rc = 0;
int words_left, len;
char *data = *pbcc_area;
cFYI(1, ("bleft %d", bleft));
/*
* Windows servers do not always double null terminate their final
* Unicode string. Check to see if there are an uneven number of bytes
* left. If so, then add an extra NULL pad byte to the end of the
* response.
*
* See section 2.7.2 in "Implementing CIFS" for details
*/
if (bleft % 2) {
data[bleft] = 0;
++bleft;
}
words_left = bleft / 2;
/* save off server operating system */
len = UniStrnlen((wchar_t *) data, words_left);
if (len >= words_left)
return rc;
kfree(ses->serverOS);
/* UTF-8 string will not grow more than four times as big as UCS-16 */
ses->serverOS = kzalloc(4 * len, GFP_KERNEL);
if (ses->serverOS != NULL)
cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp);
data += 2 * (len + 1);
words_left -= len + 1;
/* save off server network operating system */
len = UniStrnlen((wchar_t *) data, words_left);
if (len >= words_left)
return rc;
kfree(ses->serverNOS);
ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */
if (ses->serverNOS != NULL) {
cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len,
nls_cp);
if (strncmp(ses->serverNOS, "NT LAN Manager 4", 16) == 0) {
cFYI(1, ("NT4 server"));
ses->flags |= CIFS_SES_NT4;
}
}
data += 2 * (len + 1);
words_left -= len + 1;
/* save off server domain */
len = UniStrnlen((wchar_t *) data, words_left);
if (len > words_left)
return rc;
kfree(ses->serverDomain);
ses->serverDomain = kzalloc((4 * len) + 2, GFP_KERNEL);
if (ses->serverDomain != NULL)
cifs_strfromUCS_le(ses->serverDomain, (__le16 *)data, len,
nls_cp);
data += 2 * (len + 1);
words_left -= len + 1;
cFYI(1, ("words left: %d", words_left));
return rc;
}