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[CIFS] NTLMv2 support part 2 

Still need to fill in response structure and check that hash works

Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2006-06-05 05:27:37 +00:00
parent 9312f6754d
commit f64b23ae4a
3 changed files with 35 additions and 7 deletions
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2
fs/cifs/cifsencrypt.c
View File

@ -306,6 +306,8 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
void CalcNTLMv2_response(const struct cifsSesInfo * ses,char * v2_session_response)
{
/* BB FIXME - update struct ntlmv2_response and change calling convention
of this function */
struct HMACMD5Context context;
memcpy(v2_session_response + 8, ses->server->cryptKey,8);
/* gen_blob(v2_session_response + 16); */

27
fs/cifs/cifspdu.h
View File

@ -117,7 +117,6 @@
* Size of the session key (crypto key encrypted with the password
*/
#define CIFS_SESS_KEY_SIZE (24)
#define V2_SESS_KEY_SIZE (86)
/*
* Maximum user name length
@ -539,7 +538,7 @@ typedef union smb_com_session_setup_andx {
/* unsigned char * NativeOS; */
/* unsigned char * NativeLanMan; */
/* unsigned char * PrimaryDomain; */
} __attribute__((packed)) resp; /* NTLM response format (with or without extended security */
} __attribute__((packed)) resp; /* NTLM response with or without extended sec*/
struct { /* request format */
struct smb_hdr hdr; /* wct = 10 */
@ -573,6 +572,26 @@ typedef union smb_com_session_setup_andx {
} __attribute__((packed)) old_resp; /* pre-NTLM (LANMAN2.1) response */
} __attribute__((packed)) SESSION_SETUP_ANDX;
/* format of NLTMv2 Response ie "case sensitive password" hash when NTLMv2 */
struct ntlmssp2_name {
__le16 type;
__le16 length;
/* char name[length]; */
} __attribute__((packed));
struct ntlmv2_resp {
char ntlmv2_hash[CIFS_ENCPWD_SIZE];
__le32 blob_sign;
__u32 reserved;
__le64 time;
__u64 client_chal; /* random */
__u32 reserved2;
struct ntlmssp2_name names[1];
/* array of name entries could follow ending in minimum 4 byte struct */
} __attribute__((packed));
#define CIFS_NETWORK_OPSYS "CIFS VFS Client for Linux"
/* Capabilities bits (for NTLM SessSetup request) */
@ -603,7 +622,9 @@ typedef struct smb_com_tconx_req {
} __attribute__((packed)) TCONX_REQ;
typedef struct smb_com_tconx_rsp {
struct smb_hdr hdr; /* wct = 3 *//* note that Win2000 has sent wct=7 in some cases on responses. Four unspecified words followed OptionalSupport */
struct smb_hdr hdr; /* wct = 3 note that Win2000 has sent wct = 7
in some cases on responses. Four unspecified
words followed OptionalSupport */
__u8 AndXCommand;
__u8 AndXReserved;
__le16 AndXOffset;

13
fs/cifs/sess.c
View File

@ -411,7 +411,11 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
else
ascii_ssetup_strings(&bcc_ptr, ses, nls_cp);
} else if (type == NTLMv2) {
char * v2_sess_key = kmalloc(V2_SESS_KEY_SIZE, GFP_KERNEL);
char * v2_sess_key = kmalloc(sizeof(struct ntlmv2_resp),
GFP_KERNEL);
/* BB FIXME change all users of v2_sess_key to
struct ntlmv2_resp */
if(v2_sess_key == NULL) {
cifs_small_buf_release(smb_buf);
@ -425,7 +429,7 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
/* cpu_to_le16(LM2_SESS_KEY_SIZE); */
pSMB->req_no_secext.CaseSensitivePasswordLength =
cpu_to_le16(V2_SESS_KEY_SIZE);
cpu_to_le16(sizeof(struct ntlmv2_resp));
/* calculate session key */
CalcNTLMv2_response(ses, v2_sess_key);
@ -438,8 +442,9 @@ CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, int first_time,
/* memcpy(bcc_ptr, (char *)ntlm_session_key,LM2_SESS_KEY_SIZE);
bcc_ptr += LM2_SESS_KEY_SIZE; */
memcpy(bcc_ptr, (char *)v2_sess_key, V2_SESS_KEY_SIZE);
bcc_ptr += V2_SESS_KEY_SIZE;
memcpy(bcc_ptr, (char *)v2_sess_key, sizeof(struct ntlmv2_resp));
bcc_ptr += sizeof(struct ntlmv2_resp);
kfree(v2_sess_key);
if(ses->capabilities & CAP_UNICODE)
unicode_ssetup_strings(&bcc_ptr, ses, nls_cp);
else