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Diffstat (limited to 'fs/cifs/cifsencrypt.c')
-rw-r--r--fs/cifs/cifsencrypt.c42
1 files changed, 27 insertions, 15 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index a2c24858d40..e7d63737e65 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -1,7 +1,7 @@
/*
* fs/cifs/cifsencrypt.c
*
- * Copyright (C) International Business Machines Corp., 2005
+ * Copyright (C) International Business Machines Corp., 2005,2006
* Author(s): Steve French (sfrench@us.ibm.com)
*
* This library is free software; you can redistribute it and/or modify
@@ -36,7 +36,8 @@
extern void mdfour(unsigned char *out, unsigned char *in, int n);
extern void E_md4hash(const unsigned char *passwd, unsigned char *p16);
-static int cifs_calculate_signature(const struct smb_hdr * cifs_pdu, const char * key, char * signature)
+static int cifs_calculate_signature(const struct smb_hdr * cifs_pdu,
+ const char * key, char * signature)
{
struct MD5Context context;
@@ -56,9 +57,6 @@ int cifs_sign_smb(struct smb_hdr * cifs_pdu, struct TCP_Server_Info * server,
int rc = 0;
char smb_signature[20];
- /* 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) || (server == NULL))
return -EINVAL;
@@ -85,20 +83,33 @@ 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 char * key, char * signature)
{
- struct MD5Context context;
-
- if((iov == NULL) || (signature == NULL))
- return -EINVAL;
+ struct MD5Context context;
+ int i;
- MD5Init(&context);
- MD5Update(&context,key,CIFS_SESSION_KEY_SIZE+16);
+ if((iov == NULL) || (signature == NULL))
+ return -EINVAL;
-/* MD5Update(&context,cifs_pdu->Protocol,cifs_pdu->smb_buf_length); */ /* BB FIXME BB */
+ MD5Init(&context);
+ MD5Update(&context,key,CIFS_SESSION_KEY_SIZE+16);
+ for(i=0;i<n_vec;i++) {
+ if(iov[i].iov_base == NULL) {
+ cERROR(1,("null iovec entry"));
+ return -EIO;
+ } else if(iov[i].iov_len == 0)
+ break; /* bail out if we are sent nothing to sign */
+ /* The first entry includes a length field (which does not get
+ signed that occupies the first 4 bytes before the header */
+ if(i==0) {
+ if (iov[0].iov_len <= 8 ) /* cmd field at offset 9 */
+ break; /* nothing to sign or corrupt header */
+ MD5Update(&context,iov[0].iov_base+4, iov[0].iov_len-4);
+ } else
+ MD5Update(&context,iov[i].iov_base, iov[i].iov_len);
+ }
- MD5Final(signature,&context);
+ MD5Final(signature,&context);
- return -EOPNOTSUPP;
-/* return 0; */
+ return 0;
}
@@ -259,4 +270,5 @@ void CalcNTLMv2_response(const struct cifsSesInfo * ses,char * v2_session_respon
/* hmac_md5_update(v2_session_response+16)client thing,8,&context); */ /* BB fix */
hmac_md5_final(v2_session_response,&context);
+ cifs_dump_mem("v2_sess_rsp: ", v2_session_response, 32); /* BB removeme BB */
}