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;
}
/* inode num, inode type and filename returned */
static int cifs_get_name_from_search_buf(struct qstr *pqst,
char *current_entry, __u16 level, unsigned int unicode,
struct cifs_sb_info *cifs_sb, int max_len, __u64 *pinum)
{
int rc = 0;
unsigned int len = 0;
char *filename;
struct nls_table *nlt = cifs_sb->local_nls;
*pinum = 0;
if (level == SMB_FIND_FILE_UNIX) {
FILE_UNIX_INFO *pFindData = (FILE_UNIX_INFO *)current_entry;
filename = &pFindData->FileName[0];
if (unicode) {
len = cifs_unicode_bytelen(filename);
} else {
/* BB should we make this strnlen of PATH_MAX? */
len = strnlen(filename, PATH_MAX);
}
*pinum = pFindData->UniqueId;
} else if (level == SMB_FIND_FILE_DIRECTORY_INFO) {
FILE_DIRECTORY_INFO *pFindData =
(FILE_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
} else if (level == SMB_FIND_FILE_FULL_DIRECTORY_INFO) {
FILE_FULL_DIRECTORY_INFO *pFindData =
(FILE_FULL_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
} else if (level == SMB_FIND_FILE_ID_FULL_DIR_INFO) {
SEARCH_ID_FULL_DIR_INFO *pFindData =
(SEARCH_ID_FULL_DIR_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
*pinum = pFindData->UniqueId;
} else if (level == SMB_FIND_FILE_BOTH_DIRECTORY_INFO) {
FILE_BOTH_DIRECTORY_INFO *pFindData =
(FILE_BOTH_DIRECTORY_INFO *)current_entry;
filename = &pFindData->FileName[0];
len = le32_to_cpu(pFindData->FileNameLength);
} else if (level == SMB_FIND_FILE_INFO_STANDARD) {
FIND_FILE_STANDARD_INFO *pFindData =
(FIND_FILE_STANDARD_INFO *)current_entry;
filename = &pFindData->FileName[0];
/* one byte length, no name conversion */
len = (unsigned int)pFindData->FileNameLength;
} else {
cFYI(1, ("Unknown findfirst level %d", level));
return -EINVAL;
}
if (len > max_len) {
cERROR(1, ("bad search response length %d past smb end", len));
return -EINVAL;
}
if (unicode) {
/* BB fixme - test with long names */
/* Note converted filename can be longer than in unicode */
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR)
pqst->len = cifs_convertUCSpath((char *)pqst->name,
(__le16 *)filename, len/2, nlt);
else
pqst->len = cifs_strfromUCS_le((char *)pqst->name,
(__le16 *)filename, len/2, nlt);
} else {
pqst->name = filename;
pqst->len = len;
}
pqst->hash = full_name_hash(pqst->name, pqst->len);
/* cFYI(1, ("filldir on %s",pqst->name)); */
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;
}
