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[PATCH] cifs: Fix multiuser packet signing to use the right sequence number and mac session key

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Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Steve French
2005-04-28 22:41:05 -07:00
committed by Linus Torvalds
parent c67593a031
commit ad009ac965
6 changed files with 50 additions and 32 deletions
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16
fs/cifs/cifsencrypt.c
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@ -50,7 +50,7 @@ static int cifs_calculate_signature(const struct smb_hdr * cifs_pdu, const char
return 0;
}
int cifs_sign_smb(struct smb_hdr * cifs_pdu, struct cifsSesInfo * ses,
int cifs_sign_smb(struct smb_hdr * cifs_pdu, struct TCP_Server_Info * server,
__u32 * pexpected_response_sequence_number)
{
int rc = 0;
@ -59,21 +59,21 @@ int cifs_sign_smb(struct smb_hdr * cifs_pdu, struct cifsSesInfo * ses,
/* BB remember to initialize sequence number elsewhere and initialize mac_signing key elsewhere BB */
/* BB remember to add code to save expected sequence number in midQ entry BB */
if((cifs_pdu == NULL) || (ses == NULL))
if((cifs_pdu == NULL) || (server == NULL))
return -EINVAL;
if((cifs_pdu->Flags2 & SMBFLG2_SECURITY_SIGNATURE) == 0)
return rc;
spin_lock(&GlobalMid_Lock);
cifs_pdu->Signature.Sequence.SequenceNumber = cpu_to_le32(ses->sequence_number);
cifs_pdu->Signature.Sequence.SequenceNumber = cpu_to_le32(server->sequence_number);
cifs_pdu->Signature.Sequence.Reserved = 0;
*pexpected_response_sequence_number = ses->sequence_number++;
ses->sequence_number++;
*pexpected_response_sequence_number = server->sequence_number++;
server->sequence_number++;
spin_unlock(&GlobalMid_Lock);
rc = cifs_calculate_signature(cifs_pdu, ses->mac_signing_key,smb_signature);
rc = cifs_calculate_signature(cifs_pdu, server->mac_signing_key,smb_signature);
if(rc)
memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
else
@ -190,7 +190,7 @@ int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses, struct nls_table * nls_
hmac_md5_update((const unsigned char *) unicode_buf,
(user_name_len+dom_name_len)*2,&ctx);
hmac_md5_final(ses->mac_signing_key,&ctx);
hmac_md5_final(ses->server->mac_signing_key,&ctx);
kfree(ucase_buf);
kfree(unicode_buf);
return 0;
@ -200,7 +200,7 @@ void CalcNTLMv2_response(const struct cifsSesInfo * ses,char * v2_session_respon
struct HMACMD5Context context;
memcpy(v2_session_response + 8, ses->server->cryptKey,8);
/* gen_blob(v2_session_response + 16); */
hmac_md5_init_limK_to_64(ses->mac_signing_key, 16, &context);
hmac_md5_init_limK_to_64(ses->server->mac_signing_key, 16, &context);
hmac_md5_update(ses->server->cryptKey,8,&context);
/* hmac_md5_update(v2_session_response+16)client thing,8,&context); */ /* BB fix */