We now have client-side SMB signing support!

This checking allows us to connect to Microsoft servers the use SMB signing,
within a few restrictions:

 - I've not get the NTLMSSP stuff going - it appears to work, but if you break
the sig - say by writing a zero in it - it still passes...
 - We don't currently verfiy the server's reply
 - It works against one of my test servers, but not the other...

However, it provides an excellent basis to work from.  Enable it with 'client
signing' in your smb.conf.

Doc to come (tomorrow) and this is not for 3.0, till we get it complete.

The CIFS Spec is misleading - the session key (for NTLMv1 at least) is the
standard session key, ie MD4(NT#).

Thanks to jra for the early work on this.

Andrew Bartlett
(This used to be commit 1a2738937e3d80b378bd0ed33cd8d395fba2d3c3)

1 files changed, 7 insertions, 4 deletions

diff --git a/source3/param/loadparm.c b/source3/param/loadparm.c
index 73456bbd11..ac366d4ccd 100644
--- a/source3/param/loadparm.c
+++ b/source3/param/loadparm.c
@@ -164,7 +164,7 @@ typedef struct
 	char *szWinbindUID;
 	char *szWinbindGID;
 	char *szNonUnixAccountRange;
-	BOOL bAlgorithmicRidBase;
+	int AlgorithmicRidBase;
 	char *szTemplateHomedir;
 	char *szTemplateShell;
 	char *szWinbindSeparator;
@@ -278,6 +278,7 @@ typedef struct
 	BOOL bKernelChangeNotify;
 	int restrict_anonymous;
 	int name_cache_timeout;
+	BOOL client_signing;
 	param_opt_struct *param_opt;
 }
 global;
@@ -754,7 +755,7 @@ static struct parm_struct parm_table[] = {
 	{"passdb backend", P_LIST, P_GLOBAL, &Globals.szPassdbBackend, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 	{"sam backend", P_LIST, P_GLOBAL, &Globals.szSamBackend, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 	{"non unix account range", P_STRING, P_GLOBAL, &Globals.szNonUnixAccountRange, handle_non_unix_account_range, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
-	{"algorithmic rid base", P_INTEGER, P_GLOBAL, &Globals.bAlgorithmicRidBase, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
+	{"algorithmic rid base", P_INTEGER, P_GLOBAL, &Globals.AlgorithmicRidBase, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 	{"root directory", P_STRING, P_GLOBAL, &Globals.szRootdir, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 	{"root dir", P_STRING, P_GLOBAL, &Globals.szRootdir, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 	{"root", P_STRING, P_GLOBAL, &Globals.szRootdir, NULL, NULL, FLAG_HIDE | FLAG_DEVELOPER},
@@ -862,6 +863,7 @@ static struct parm_struct parm_table[] = {
 	{"time server", P_BOOL, P_GLOBAL, &Globals.bTimeServer, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 	{"unix extensions", P_BOOL, P_GLOBAL, &Globals.bUnixExtensions, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 	{"use spnego", P_BOOL, P_GLOBAL, &Globals.bUseSpnego, NULL, NULL, FLAG_DEVELOPER},
+	{"client signing", P_BOOL, P_GLOBAL, &Globals.client_signing, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER},
 
 	{"Tuning Options", P_SEP, P_SEPARATOR},
 	
@@ -1306,7 +1308,7 @@ static void init_globals(void)
 	string_set(&Globals.szNameResolveOrder, "lmhosts wins host bcast");
 	string_set(&Globals.szPasswordServer, "*");
 
-	Globals.bAlgorithmicRidBase = BASE_RID;
+	Globals.AlgorithmicRidBase = BASE_RID;
 
 	Globals.bLoadPrinters = True;
 	Globals.mangled_stack = 50;
@@ -1825,8 +1827,9 @@ FN_LOCAL_INTEGER(lp_block_size, iBlock_size)
 FN_LOCAL_CHAR(lp_magicchar, magic_char)
 FN_GLOBAL_INTEGER(lp_winbind_cache_time, &Globals.winbind_cache_time)
 FN_GLOBAL_BOOL(lp_hide_local_users, &Globals.bHideLocalUsers)
-FN_GLOBAL_BOOL(lp_algorithmic_rid_base, &Globals.bAlgorithmicRidBase)
+FN_GLOBAL_INTEGER(lp_algorithmic_rid_base, &Globals.AlgorithmicRidBase)
 FN_GLOBAL_INTEGER(lp_name_cache_timeout, &Globals.name_cache_timeout)
+FN_GLOBAL_BOOL(lp_client_signing, &Globals.client_signing)
 
 /* local prototypes */