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path: root/fs/cifs/cifsencrypt.c
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Diffstat (limited to 'fs/cifs/cifsencrypt.c')
-rw-r--r--fs/cifs/cifsencrypt.c122
1 files changed, 64 insertions, 58 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 860dc49ba79c..be012a17278a 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -39,7 +39,7 @@ extern void mdfour(unsigned char *out, unsigned char *in, int n);
extern void E_md4hash(const unsigned char *passwd, unsigned char *p16);
extern void SMBencrypt(unsigned char *passwd, unsigned char *c8,
unsigned char *p24);
-
+
static int cifs_calculate_signature(const struct smb_hdr *cifs_pdu,
const struct mac_key *key, char *signature)
{
@@ -69,10 +69,10 @@ int cifs_sign_smb(struct smb_hdr *cifs_pdu, struct TCP_Server_Info *server,
return rc;
spin_lock(&GlobalMid_Lock);
- cifs_pdu->Signature.Sequence.SequenceNumber =
- cpu_to_le32(server->sequence_number);
+ cifs_pdu->Signature.Sequence.SequenceNumber =
+ cpu_to_le32(server->sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
-
+
*pexpected_response_sequence_number = server->sequence_number++;
server->sequence_number++;
spin_unlock(&GlobalMid_Lock);
@@ -98,9 +98,9 @@ static int cifs_calc_signature2(const struct kvec *iov, int n_vec,
MD5Init(&context);
MD5Update(&context, (char *)&key->data, key->len);
- for (i=0;i<n_vec;i++) {
+ for (i = 0; i < n_vec; i++) {
if (iov[i].iov_base == NULL) {
- cERROR(1 ,("null iovec entry"));
+ cERROR(1, ("null iovec entry"));
return -EIO;
} else if (iov[i].iov_len == 0)
break; /* bail out if we are sent nothing to sign */
@@ -167,36 +167,38 @@ int cifs_verify_signature(struct smb_hdr *cifs_pdu,
return 0;
if (cifs_pdu->Command == SMB_COM_LOCKING_ANDX) {
- struct smb_com_lock_req * pSMB =
+ struct smb_com_lock_req *pSMB =
(struct smb_com_lock_req *)cifs_pdu;
if (pSMB->LockType & LOCKING_ANDX_OPLOCK_RELEASE)
return 0;
}
- /* BB what if signatures are supposed to be on for session but server does not
- send one? BB */
-
+ /* BB what if signatures are supposed to be on for session but
+ server does not send one? BB */
+
/* Do not need to verify session setups with signature "BSRSPYL " */
- if(memcmp(cifs_pdu->Signature.SecuritySignature,"BSRSPYL ",8)==0)
- cFYI(1,("dummy signature received for smb command 0x%x",cifs_pdu->Command));
+ if (memcmp(cifs_pdu->Signature.SecuritySignature, "BSRSPYL ", 8) == 0)
+ cFYI(1, ("dummy signature received for smb command 0x%x",
+ cifs_pdu->Command));
/* save off the origiginal signature so we can modify the smb and check
its signature against what the server sent */
- memcpy(server_response_sig,cifs_pdu->Signature.SecuritySignature,8);
+ memcpy(server_response_sig, cifs_pdu->Signature.SecuritySignature, 8);
- cifs_pdu->Signature.Sequence.SequenceNumber = cpu_to_le32(expected_sequence_number);
+ cifs_pdu->Signature.Sequence.SequenceNumber =
+ cpu_to_le32(expected_sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
rc = cifs_calculate_signature(cifs_pdu, mac_key,
what_we_think_sig_should_be);
- if(rc)
+ if (rc)
return rc;
-
-/* cifs_dump_mem("what we think it should be: ",what_we_think_sig_should_be,16); */
+/* cifs_dump_mem("what we think it should be: ",
+ what_we_think_sig_should_be, 16); */
- if(memcmp(server_response_sig, what_we_think_sig_should_be, 8))
+ if (memcmp(server_response_sig, what_we_think_sig_should_be, 8))
return -EACCES;
else
return 0;
@@ -218,30 +220,30 @@ int cifs_calculate_mac_key(struct mac_key *key, const char *rn,
return 0;
}
-int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses,
- const struct nls_table * nls_info)
+int CalcNTLMv2_partial_mac_key(struct cifsSesInfo *ses,
+ const struct nls_table *nls_info)
{
char temp_hash[16];
struct HMACMD5Context ctx;
- char * ucase_buf;
- __le16 * unicode_buf;
- unsigned int i,user_name_len,dom_name_len;
+ char *ucase_buf;
+ __le16 *unicode_buf;
+ unsigned int i, user_name_len, dom_name_len;
- if(ses == NULL)
+ if (ses == NULL)
return -EINVAL;
E_md4hash(ses->password, temp_hash);
hmac_md5_init_limK_to_64(temp_hash, 16, &ctx);
user_name_len = strlen(ses->userName);
- if(user_name_len > MAX_USERNAME_SIZE)
+ if (user_name_len > MAX_USERNAME_SIZE)
return -EINVAL;
- if(ses->domainName == NULL)
+ if (ses->domainName == NULL)
return -EINVAL; /* BB should we use CIFS_LINUX_DOM */
dom_name_len = strlen(ses->domainName);
if (dom_name_len > MAX_USERNAME_SIZE)
return -EINVAL;
-
+
ucase_buf = kmalloc((MAX_USERNAME_SIZE+1), GFP_KERNEL);
if (ucase_buf == NULL)
return -ENOMEM;
@@ -250,18 +252,20 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses,
kfree(ucase_buf);
return -ENOMEM;
}
-
- for (i = 0;i < user_name_len; i++)
+
+ for (i = 0; i < user_name_len; i++)
ucase_buf[i] = nls_info->charset2upper[(int)ses->userName[i]];
ucase_buf[i] = 0;
- user_name_len = cifs_strtoUCS(unicode_buf, ucase_buf, MAX_USERNAME_SIZE*2, nls_info);
+ user_name_len = cifs_strtoUCS(unicode_buf, ucase_buf,
+ MAX_USERNAME_SIZE*2, nls_info);
unicode_buf[user_name_len] = 0;
user_name_len++;
for (i = 0; i < dom_name_len; i++)
ucase_buf[i] = nls_info->charset2upper[(int)ses->domainName[i]];
ucase_buf[i] = 0;
- dom_name_len = cifs_strtoUCS(unicode_buf+user_name_len, ucase_buf, MAX_USERNAME_SIZE*2, nls_info);
+ dom_name_len = cifs_strtoUCS(unicode_buf+user_name_len, ucase_buf,
+ MAX_USERNAME_SIZE*2, nls_info);
unicode_buf[user_name_len + dom_name_len] = 0;
hmac_md5_update((const unsigned char *) unicode_buf,
@@ -274,21 +278,22 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses,
}
#ifdef CONFIG_CIFS_WEAK_PW_HASH
-void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
+void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key)
{
int i;
char password_with_pad[CIFS_ENCPWD_SIZE];
- if(ses->server == NULL)
+ if (ses->server == NULL)
return;
memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
- if(ses->password)
+ if (ses->password)
strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
- if((ses->server->secMode & SECMODE_PW_ENCRYPT) == 0)
- if(extended_security & CIFSSEC_MAY_PLNTXT) {
- memcpy(lnm_session_key, password_with_pad, CIFS_ENCPWD_SIZE);
+ if ((ses->server->secMode & SECMODE_PW_ENCRYPT) == 0)
+ if (extended_security & CIFSSEC_MAY_PLNTXT) {
+ memcpy(lnm_session_key, password_with_pad,
+ CIFS_ENCPWD_SIZE);
return;
}
@@ -303,7 +308,7 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
utf8 and other multibyte codepages each need their own strupper
function since a byte at a time will ont work. */
- for(i = 0; i < CIFS_ENCPWD_SIZE; i++) {
+ for (i = 0; i < CIFS_ENCPWD_SIZE; i++) {
password_with_pad[i] = toupper(password_with_pad[i]);
}
@@ -313,19 +318,19 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
}
#endif /* CIFS_WEAK_PW_HASH */
-static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
- const struct nls_table * nls_cp)
+static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
+ const struct nls_table *nls_cp)
{
int rc = 0;
int len;
char nt_hash[16];
- struct HMACMD5Context * pctxt;
- wchar_t * user;
- wchar_t * domain;
+ struct HMACMD5Context *pctxt;
+ wchar_t *user;
+ wchar_t *domain;
pctxt = kmalloc(sizeof(struct HMACMD5Context), GFP_KERNEL);
- if(pctxt == NULL)
+ if (pctxt == NULL)
return -ENOMEM;
/* calculate md4 hash of password */
@@ -337,18 +342,18 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
/* convert ses->userName to unicode and uppercase */
len = strlen(ses->userName);
user = kmalloc(2 + (len * 2), GFP_KERNEL);
- if(user == NULL)
+ if (user == NULL)
goto calc_exit_2;
len = cifs_strtoUCS(user, ses->userName, len, nls_cp);
UniStrupr(user);
hmac_md5_update((char *)user, 2*len, pctxt);
/* convert ses->domainName to unicode and uppercase */
- if(ses->domainName) {
+ if (ses->domainName) {
len = strlen(ses->domainName);
- domain = kmalloc(2 + (len * 2), GFP_KERNEL);
- if(domain == NULL)
+ domain = kmalloc(2 + (len * 2), GFP_KERNEL);
+ if (domain == NULL)
goto calc_exit_1;
len = cifs_strtoUCS(domain, ses->domainName, len, nls_cp);
/* the following line was removed since it didn't work well
@@ -357,24 +362,24 @@ static int calc_ntlmv2_hash(struct cifsSesInfo *ses,
/* UniStrupr(domain); */
hmac_md5_update((char *)domain, 2*len, pctxt);
-
+
kfree(domain);
}
calc_exit_1:
kfree(user);
calc_exit_2:
- /* BB FIXME what about bytes 24 through 40 of the signing key?
+ /* BB FIXME what about bytes 24 through 40 of the signing key?
compare with the NTLM example */
hmac_md5_final(ses->server->ntlmv2_hash, pctxt);
return rc;
}
-void setup_ntlmv2_rsp(struct cifsSesInfo * ses, char * resp_buf,
- const struct nls_table * nls_cp)
+void setup_ntlmv2_rsp(struct cifsSesInfo *ses, char *resp_buf,
+ const struct nls_table *nls_cp)
{
int rc;
- struct ntlmv2_resp * buf = (struct ntlmv2_resp *)resp_buf;
+ struct ntlmv2_resp *buf = (struct ntlmv2_resp *)resp_buf;
struct HMACMD5Context context;
buf->blob_signature = cpu_to_le32(0x00000101);
@@ -389,8 +394,8 @@ void setup_ntlmv2_rsp(struct cifsSesInfo * ses, char * resp_buf,
/* calculate buf->ntlmv2_hash */
rc = calc_ntlmv2_hash(ses, nls_cp);
- if(rc)
- cERROR(1,("could not get v2 hash rc %d",rc));
+ if (rc)
+ cERROR(1, ("could not get v2 hash rc %d", rc));
CalcNTLMv2_response(ses, resp_buf);
/* now calculate the MAC key for NTLMv2 */
@@ -403,16 +408,17 @@ void setup_ntlmv2_rsp(struct cifsSesInfo * ses, char * resp_buf,
ses->server->mac_signing_key.len = 16 + sizeof(struct ntlmv2_resp);
}
-void CalcNTLMv2_response(const struct cifsSesInfo * ses, char * v2_session_response)
+void CalcNTLMv2_response(const struct cifsSesInfo *ses,
+ char *v2_session_response)
{
struct HMACMD5Context context;
/* rest of v2 struct already generated */
- memcpy(v2_session_response + 8, ses->server->cryptKey,8);
+ memcpy(v2_session_response + 8, ses->server->cryptKey, 8);
hmac_md5_init_limK_to_64(ses->server->ntlmv2_hash, 16, &context);
hmac_md5_update(v2_session_response+8,
sizeof(struct ntlmv2_resp) - 8, &context);
- hmac_md5_final(v2_session_response,&context);
+ hmac_md5_final(v2_session_response, &context);
/* cifs_dump_mem("v2_sess_rsp: ", v2_session_response, 32); */
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 20:59:47 +0000