From: Shirish Pargaonkar <[email protected]>
Signed-off-by: Shirish Pargaonkar <[email protected]>
---
fs/cifs/cifsencrypt.c | 13 +++++++------
fs/cifs/cifsglob.h | 25 +++++++++++++++++++++++--
fs/cifs/cifspdu.h | 7 +++++++
fs/cifs/cifsproto.h | 4 ++--
fs/cifs/ntlmssp.h | 13 +++++++++++++
5 files changed, 52 insertions(+), 10 deletions(-)
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 847628d..86e33cc 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -42,7 +42,8 @@ extern void SMBencrypt(unsigned char *passwd, const unsigned
char *c8,
unsigned char *p24);
static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
- const struct mac_key *key, char *signature)
+ const struct session_key *key,
+ char *signature)
{
struct MD5Context context;
@@ -89,7 +90,7 @@ int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct
TCP_Server_Info *server,
}
static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
- const struct mac_key *key, char *signature)
+ const struct session_key *key, char *signature)
{
struct MD5Context context;
int i;
@@ -156,14 +157,14 @@ int cifs_sign_smb2(struct kvec *iov, int n_vec, struct
TCP_Server_Info *server,
}
int cifs_verify_signature(struct smb_hdr *cifs_pdu,
- const struct mac_key *mac_key,
+ const struct session_key *session_key,
__u32 expected_sequence_number)
{
unsigned int rc;
char server_response_sig[8];
char what_we_think_sig_should_be[20];
- if ((cifs_pdu == NULL) || (mac_key == NULL))
+ if ((cifs_pdu == NULL) || (session_key == NULL))
return -EINVAL;
if (cifs_pdu->Command == SMB_COM_NEGOTIATE)
@@ -192,7 +193,7 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
cpu_to_le32(expected_sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
- rc = cifs_calculate_signature(cifs_pdu, mac_key,
+ rc = cifs_calculate_signature(cifs_pdu, session_key,
what_we_think_sig_should_be);
if (rc)
@@ -209,7 +210,7 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
}
/* We fill in key by putting in 40 byte array which was allocated by caller */
-int cifs_calculate_mac_key(struct mac_key *key, const char *rn,
+int cifs_calculate_mac_key(struct session_key *key, const char *rn,
const char *password)
{
char temp_key[16];
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 0cdfb8c..6e35655 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -25,6 +25,9 @@
#include <linux/workqueue.h>
#include "cifs_fs_sb.h"
#include "cifsacl.h"
+#include <crypto/internal/hash.h>
+#include <linux/scatterlist.h>
+
/*
* The sizes of various internal tables and strings
*/
@@ -97,7 +100,7 @@ enum protocolEnum {
/* Netbios frames protocol not supported at this time */
};
-struct mac_key {
+struct session_key {
unsigned int len;
union {
char ntlm[CIFS_SESS_KEY_SIZE + 16];
@@ -120,6 +123,20 @@ struct cifs_cred {
struct cifs_ace *aces;
};
+struct sdesc {
+ struct shash_desc shash;
+ char ctx[];
+};
+
+struct ntlmssp_auth {
+ __u32 client_flags; /* sent by client in type 1 ntlmsssp exchange */
+ __u32 server_flags; /* sent by server in type 2 ntlmssp exchange */
+ unsigned char sec_key[CIFS_CPHTXT_SIZE]; /* nonce client generates */
+ unsigned char ciphertext[CIFS_CPHTXT_SIZE]; /* sent to server */
+ struct crypto_shash *hmacmd5; /* to generate ntlmv2 hash, CR1 etc. */
+ struct crypto_shash *md5; /* to generate cifs/smb signature */
+};
+
/*
*****************************************************************
* Except the CIFS PDUs themselves all the
@@ -182,11 +199,15 @@ struct TCP_Server_Info {
/* 16th byte of RFC1001 workstation name is always null */
char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
__u32 sequence_number; /* needed for CIFS PDU signature */
- struct mac_key mac_signing_key;
+ struct session_key mac_signing_key;
char ntlmv2_hash[16];
unsigned long lstrp; /* when we got last response from this server */
u16 dialect; /* dialect index that server chose */
/* extended security flavors that server supports */
+ unsigned int tilen; /* length of the target info blob */
+ unsigned char *tiblob; /* target info blob in challenge response */
+ struct ntlmssp_auth ntlmssp; /* various keys, ciphers, flags */
+ bool cphready; /* ciphertext is calculated */
bool sec_kerberos; /* supports plain Kerberos */
bool sec_mskerberos; /* supports legacy MS Kerberos */
bool sec_kerberosu2u; /* supports U2U Kerberos */
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 14d036d..f5c78fb 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -134,6 +134,13 @@
* Size of the session key (crypto key encrypted with the password
*/
#define CIFS_SESS_KEY_SIZE (24)
+#define CIFS_CLIENT_CHALLENGE_SIZE (8)
+#define CIFS_SERVER_CHALLENGE_SIZE (8)
+#define CIFS_HMAC_MD5_HASH_SIZE (16)
+#define CIFS_CPHTXT_SIZE (16)
+#define CIFS_NTLMV2_SESSKEY_SIZE (16)
+#define CIFS_NTHASH_SIZE (16)
+
/*
* Maximum user name length
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 1f54508..8d63406 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -361,9 +361,9 @@ extern int cifs_sign_smb(struct smb_hdr *, struct
TCP_Server_Info *, __u32 *);
extern int cifs_sign_smb2(struct kvec *iov, int n_vec, struct TCP_Server_Info
*,
__u32 *);
extern int cifs_verify_signature(struct smb_hdr *,
- const struct mac_key *mac_key,
+ const struct session_key *session_key,
__u32 expected_sequence_number);
-extern int cifs_calculate_mac_key(struct mac_key *key, const char *rn,
+extern int cifs_calculate_mac_key(struct session_key *key, const char *rn,
const char *pass);
extern int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *,
const struct nls_table *);
diff --git a/fs/cifs/ntlmssp.h b/fs/cifs/ntlmssp.h
index 49c9a4e..3c8c6c1 100644
--- a/fs/cifs/ntlmssp.h
+++ b/fs/cifs/ntlmssp.h
@@ -61,6 +61,19 @@
#define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
#define NTLMSSP_NEGOTIATE_56 0x80000000
+/* Define AV Pair Field IDs */
+#define NTLMSSP_AV_EOL 0
+#define NTLMSSP_AV_NB_COMPUTER_NAME 1
+#define NTLMSSP_AV_NB_DOMAIN_NAME 2
+#define NTLMSSP_AV_DNS_COMPUTER_NAME 3
+#define NTLMSSP_AV_DNS_DOMAIN_NAME 4
+#define NTLMSSP_AV_DNS_TREE_NAME 5
+#define NTLMSSP_AV_FLAGS 6
+#define NTLMSSP_AV_TIMESTAMP 7
+#define NTLMSSP_AV_RESTRICTION 8
+#define NTLMSSP_AV_TARGET_NAME 9
+#define NTLMSSP_AV_CHANNEL_BINDINGS 10
+
/* Although typedefs are not commonly used for structure definitions */
/* in the Linux kernel, in this particular case they are useful */
/* to more closely match the standards document for NTLMSSP from */
--
1.6.0.2
--
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