Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee13...

[pandora-kernel.git] / fs / cifs / cifsencrypt.c

diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 3ae964b..4bc250b 100644 (file)
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -27,6 +27,7 @@
 #include "cifs_unicode.h"
 #include "cifsproto.h"
 #include <linux/ctype.h>
+#include <linux/random.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  */
@@ -211,7 +212,8 @@ int cifs_calculate_mac_key(char * key, const char * rn, const char * password)
        return 0;
 }
 
-int CalcNTLMv2_partial_mac_key(struct cifsSesInfo * ses, 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;
@@ -275,7 +277,8 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
                return;
 
        memset(password_with_pad, 0, CIFS_ENCPWD_SIZE);
-       strncpy(password_with_pad, ses->password, CIFS_ENCPWD_SIZE);
+       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) {
@@ -304,16 +307,91 @@ void calc_lanman_hash(struct cifsSesInfo * ses, char * lnm_session_key)
 }
 #endif /* CIFS_WEAK_PW_HASH */
 
-void CalcNTLMv2_response(const struct cifsSesInfo * ses,char * v2_session_response)
+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;
+
+       pctxt = kmalloc(sizeof(struct HMACMD5Context), GFP_KERNEL);
+
+       if(pctxt == NULL)
+               return -ENOMEM;
+
+       /* calculate md4 hash of password */
+       E_md4hash(ses->password, nt_hash);
+
+       /* convert Domainname to unicode and uppercase */
+       hmac_md5_init_limK_to_64(nt_hash, 16, pctxt);
+
+       /* convert ses->userName to unicode and uppercase */
+       len = strlen(ses->userName);
+       user = kmalloc(2 + (len * 2), GFP_KERNEL);
+       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) {
+               len = strlen(ses->domainName);
+
+               domain = kmalloc(2 + (len * 2), GFP_KERNEL);
+               if(domain == NULL)
+                       goto calc_exit_1;
+               len = cifs_strtoUCS(domain, ses->domainName, len, nls_cp);
+               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? 
+          compare with the NTLM example */
+       hmac_md5_final(ses->server->mac_signing_key, pctxt);
+
+       return rc;
+}
+
+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;
+
+       buf->blob_signature = cpu_to_le32(0x00000101);
+       buf->reserved = 0;
+       buf->time = cpu_to_le64(cifs_UnixTimeToNT(CURRENT_TIME));
+       get_random_bytes(&buf->client_chal, sizeof(buf->client_chal));
+       buf->reserved2 = 0;
+       buf->names[0].type = 0;
+       buf->names[0].length = 0;
+
+       /* calculate buf->ntlmv2_hash */
+       rc = calc_ntlmv2_hash(ses, nls_cp);
+       if(rc)
+               cERROR(1,("could not get v2 hash rc %d",rc));
+       CalcNTLMv2_response(ses, resp_buf);
+}
+
+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);
-       /* gen_blob(v2_session_response + 16); */
        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 */
+       hmac_md5_update(v2_session_response+8, 
+                       sizeof(struct ntlmv2_resp) - 8, &context);
 
        hmac_md5_final(v2_session_response,&context);
-       cifs_dump_mem("v2_sess_rsp: ", v2_session_response, 32); /* BB removeme BB */
+/*     cifs_dump_mem("v2_sess_rsp: ", v2_session_response, 32); */
 }