Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
new file mode 100644
index 0000000..78829e7
--- /dev/null
+++ b/fs/cifs/cifsencrypt.c
@@ -0,0 +1,209 @@
+/*
+ * fs/cifs/cifsencrypt.c
+ *
+ * Copyright (C) International Business Machines Corp., 2003
+ * Author(s): Steve French (sfrench@us.ibm.com)
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/fs.h>
+#include "cifspdu.h"
+#include "cifsglob.h"
+#include "cifs_debug.h"
+#include "md5.h"
+#include "cifs_unicode.h"
+#include "cifsproto.h"
+
+/* Calculate and return the CIFS signature based on the mac key and the smb pdu */
+/* the 16 byte signature must be allocated by the caller */
+/* Note we only use the 1st eight bytes */
+/* Note that the smb header signature field on input contains the
+ sequence number before this function is called */
+
+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)
+{
+ struct MD5Context context;
+
+ if((cifs_pdu == NULL) || (signature == NULL))
+ return -EINVAL;
+
+ MD5Init(&context);
+ MD5Update(&context,key,CIFS_SESSION_KEY_SIZE+16);
+ MD5Update(&context,cifs_pdu->Protocol,cifs_pdu->smb_buf_length);
+ MD5Final(signature,&context);
+ return 0;
+}
+
+int cifs_sign_smb(struct smb_hdr * cifs_pdu, struct cifsSesInfo * ses,
+ __u32 * pexpected_response_sequence_number)
+{
+ 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) || (ses == 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.Reserved = 0;
+
+ *pexpected_response_sequence_number = ses->sequence_number++;
+ ses->sequence_number++;
+ spin_unlock(&GlobalMid_Lock);
+
+ rc = cifs_calculate_signature(cifs_pdu, ses->mac_signing_key,smb_signature);
+ if(rc)
+ memset(cifs_pdu->Signature.SecuritySignature, 0, 8);
+ else
+ memcpy(cifs_pdu->Signature.SecuritySignature, smb_signature, 8);
+
+ return rc;
+}
+
+int cifs_verify_signature(struct smb_hdr * cifs_pdu, const char * mac_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))
+ return -EINVAL;
+
+ if (cifs_pdu->Command == SMB_COM_NEGOTIATE)
+ return 0;
+
+ if (cifs_pdu->Command == SMB_COM_LOCKING_ANDX) {
+ 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 */
+
+ /* 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));
+
+ /* 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);
+
+ 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)
+ return rc;
+
+
+/* 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))
+ return -EACCES;
+ else
+ return 0;
+
+}
+
+/* We fill in key by putting in 40 byte array which was allocated by caller */
+int cifs_calculate_mac_key(char * key, const char * rn, const char * password)
+{
+ char temp_key[16];
+ if ((key == NULL) || (rn == NULL))
+ return -EINVAL;
+
+ E_md4hash(password, temp_key);
+ mdfour(key,temp_key,16);
+ memcpy(key+16,rn, CIFS_SESSION_KEY_SIZE);
+ return 0;
+}
+
+int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses, struct nls_table * nls_info)
+{
+ char temp_hash[16];
+ struct HMACMD5Context ctx;
+ char * ucase_buf;
+ wchar_t * unicode_buf;
+ unsigned int i,user_name_len,dom_name_len;
+
+ 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)
+ return -EINVAL;
+ 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;
+ unicode_buf = kmalloc((MAX_USERNAME_SIZE+1)*4, GFP_KERNEL);
+ if(unicode_buf == NULL) {
+ kfree(ucase_buf);
+ return -ENOMEM;
+ }
+
+ 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);
+ 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);
+
+ unicode_buf[user_name_len + dom_name_len] = 0;
+ hmac_md5_update((const unsigned char *) unicode_buf,
+ (user_name_len+dom_name_len)*2,&ctx);
+
+ hmac_md5_final(ses->mac_signing_key,&ctx);
+ kfree(ucase_buf);
+ kfree(unicode_buf);
+ return 0;
+}
+void CalcNTLMv2_response(const struct cifsSesInfo * ses,char * v2_session_response)
+{
+ 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_update(ses->server->cryptKey,8,&context);
+/* hmac_md5_update(v2_session_response+16)client thing,8,&context); */ /* BB fix */
+
+ hmac_md5_final(v2_session_response,&context);
+}