r6460: Push the client credentials into NTLMSSP, allowing logins of the form

user@REALM for the first time.

Fix the build for smbencrypt.c

Andrew Bartlett
(This used to be commit 5a6a57cd93e22e612bfbb8a8f7bc29269a9a3ac6)

4 files changed, 92 insertions, 102 deletions

diff --git a/source4/auth/ntlmssp/ntlmssp.c b/source4/auth/ntlmssp/ntlmssp.c
index d0bd98419e..9bb0ed99fa 100644
--- a/source4/auth/ntlmssp/ntlmssp.c
+++ b/source4/auth/ntlmssp/ntlmssp.c
@@ -35,7 +35,7 @@
 static const struct ntlmssp_callbacks {
 	enum ntlmssp_role role;
 	enum ntlmssp_message_type ntlmssp_command;
-	NTSTATUS (*fn)(struct ntlmssp_state *ntlmssp_state, 
+	NTSTATUS (*fn)(struct gensec_security *gensec_security, 
 		       TALLOC_CTX *out_mem_ctx, 
 		       DATA_BLOB in, DATA_BLOB *out);
 } ntlmssp_callbacks[] = {
@@ -89,68 +89,6 @@ void debug_ntlmssp_flags(uint32_t neg_flags)
 		DEBUGADD(4, ("  NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
 }
 
-/** 
- * Set a username on an NTLMSSP context - ensures it is talloc()ed 
- *
- */
-
-NTSTATUS ntlmssp_set_username(struct ntlmssp_state *ntlmssp_state, const char *user) 
-{
-	if (!user) {
-		/* it should be at least "" */
-		DEBUG(1, ("NTLMSSP failed to set username - cannot accept NULL username\n"));
-		return NT_STATUS_INVALID_PARAMETER;
-	}
-	ntlmssp_state->user = talloc_strdup(ntlmssp_state, user);
-	if (!ntlmssp_state->user) {
-		return NT_STATUS_NO_MEMORY;
-	}
-	return NT_STATUS_OK;
-}
-
-/** 
- * Set a password on an NTLMSSP context - ensures it is talloc()ed 
- *
- */
-NTSTATUS ntlmssp_set_password(struct ntlmssp_state *ntlmssp_state, const char *password) 
-{
-	if (!password) {
-		ntlmssp_state->password = NULL;
-	} else {
-		ntlmssp_state->password = talloc_strdup(ntlmssp_state, password);
-		if (!ntlmssp_state->password) {
-			return NT_STATUS_NO_MEMORY;
-		}
-	}
-	return NT_STATUS_OK;
-}
-
-/** 
- * Set a domain on an NTLMSSP context - ensures it is talloc()ed 
- *
- */
-NTSTATUS ntlmssp_set_domain(struct ntlmssp_state *ntlmssp_state, const char *domain) 
-{
-	ntlmssp_state->domain = talloc_strdup(ntlmssp_state, domain);
-	if (!ntlmssp_state->domain) {
-		return NT_STATUS_NO_MEMORY;
-	}
-	return NT_STATUS_OK;
-}
-
-/** 
- * Set a workstation on an NTLMSSP context - ensures it is talloc()ed 
- *
- */
-NTSTATUS ntlmssp_set_workstation(struct ntlmssp_state *ntlmssp_state, const char *workstation) 
-{
-	ntlmssp_state->workstation = talloc_strdup(ntlmssp_state, workstation);
-	if (!ntlmssp_state->workstation) {
-		return NT_STATUS_NO_MEMORY;
-	}
-	return NT_STATUS_OK;
-}
-
 /**
  *  Store a DATA_BLOB containing an NTLMSSP response, for use later.
  *  This copies the data blob
@@ -175,7 +113,8 @@ NTSTATUS ntlmssp_store_response(struct ntlmssp_state *ntlmssp_state,
  *                or NT_STATUS_OK if the user is authenticated. 
  */
 
-static NTSTATUS gensec_ntlmssp_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx, 
+static NTSTATUS gensec_ntlmssp_update(struct gensec_security *gensec_security, 
+				      TALLOC_CTX *out_mem_ctx, 
 				      const DATA_BLOB in, DATA_BLOB *out) 
 {
 	struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
@@ -236,7 +175,7 @@ static NTSTATUS gensec_ntlmssp_update(struct gensec_security *gensec_security, T
 	for (i=0; i < ARRAY_SIZE(ntlmssp_callbacks); i++) {
 		if (ntlmssp_callbacks[i].role == ntlmssp_state->role 
 		    && ntlmssp_callbacks[i].ntlmssp_command == ntlmssp_command) {
-			status = ntlmssp_callbacks[i].fn(ntlmssp_state, out_mem_ctx, input, out);
+			status = ntlmssp_callbacks[i].fn(gensec_security, out_mem_ctx, input, out);
 			break;
 		}
 	}
diff --git a/source4/auth/ntlmssp/ntlmssp.h b/source4/auth/ntlmssp/ntlmssp.h
index 0fe04a7c0f..7e7aeaad98 100644
--- a/source4/auth/ntlmssp/ntlmssp.h
+++ b/source4/auth/ntlmssp/ntlmssp.h
@@ -96,7 +96,6 @@ struct ntlmssp_state
 	char *user;
 	char *domain;
 	const char *workstation;
-	char *password;
 	char *server_domain;
 
 	DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
diff --git a/source4/auth/ntlmssp/ntlmssp_client.c b/source4/auth/ntlmssp/ntlmssp_client.c
index bbde1d954b..dcd52af1f5 100644
--- a/source4/auth/ntlmssp/ntlmssp_client.c
+++ b/source4/auth/ntlmssp/ntlmssp_client.c
@@ -41,10 +41,13 @@
  * @return Errors or NT_STATUS_OK. 
  */
 
-NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state, 
+NTSTATUS ntlmssp_client_initial(struct gensec_security *gensec_security, 
 				TALLOC_CTX *out_mem_ctx, 
 				DATA_BLOB in, DATA_BLOB *out) 
 {
+	struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+	struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp_state->ntlmssp_state;
+
 	if (ntlmssp_state->unicode) {
 		ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
 	} else {
@@ -62,7 +65,7 @@ NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
 		  NTLMSSP_NEGOTIATE,
 		  ntlmssp_state->neg_flags,
 		  ntlmssp_state->get_domain(), 
-		  ntlmssp_state->workstation);
+		  cli_credentials_get_workstation(gensec_security->credentials));
 
 	ntlmssp_state->expected_state = NTLMSSP_CHALLENGE;
 
@@ -78,10 +81,12 @@ NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
  * @return Errors or NT_STATUS_OK. 
  */
 
-NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state, 
+NTSTATUS ntlmssp_client_challenge(struct gensec_security *gensec_security, 
 				  TALLOC_CTX *out_mem_ctx,
 				  const DATA_BLOB in, DATA_BLOB *out) 
 {
+	struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+	struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp_state->ntlmssp_state;
 	uint32_t chal_flags, ntlmssp_command, unkn1, unkn2;
 	DATA_BLOB server_domain_blob;
 	DATA_BLOB challenge_blob;
@@ -97,6 +102,8 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 	DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
 	NTSTATUS nt_status;
 
+	const char *user, *domain, *password;
+
 	if (!msrpc_parse(ntlmssp_state, 
 			 &in, "CdBd",
 			 "NTLMSSP",
@@ -156,7 +163,21 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 		return NT_STATUS_INVALID_PARAMETER;
 	}
 
-	if (!ntlmssp_state->password) {
+	/* Correctly handle username in the original form of user@REALM, which is valid */
+	if (gensec_security->credentials->realm_obtained
+	    > gensec_security->credentials->domain_obtained) {
+		user = talloc_asprintf(out_mem_ctx, "%s@%s", 
+				       cli_credentials_get_username(gensec_security->credentials), 
+				       cli_credentials_get_realm(gensec_security->credentials));
+		domain = NULL;
+	} else {
+		user = cli_credentials_get_username(gensec_security->credentials);
+		domain = cli_credentials_get_domain(gensec_security->credentials);
+	}
+
+	password = cli_credentials_get_password(gensec_security->credentials);
+
+	if (!password) {
 		static const uint8_t zeros[16];
 		/* do nothing - blobs are zero length */
 
@@ -177,9 +198,9 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 		/* TODO: if the remote server is standalone, then we should replace 'domain'
 		   with the server name as supplied above */
 		
-		if (!SMBNTLMv2encrypt(ntlmssp_state->user, 
-				      ntlmssp_state->domain, 
-				      ntlmssp_state->password, &challenge_blob, 
+		if (!SMBNTLMv2encrypt(user, 
+				      domain, 
+				      password, &challenge_blob, 
 				      &struct_blob, 
 				      &lm_response, &nt_response, 
 				      NULL, &session_key)) {
@@ -197,7 +218,7 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 		uint8_t session_nonce[16];
 		uint8_t session_nonce_hash[16];
 		uint8_t user_session_key[16];
-		E_md4hash(ntlmssp_state->password, nt_hash);
+		E_md4hash(password, nt_hash);
 		
 		lm_response = data_blob_talloc(ntlmssp_state, NULL, 24);
 		generate_random_buffer(lm_response.data, 8);
@@ -216,7 +237,7 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 		dump_data(5, session_nonce_hash, 8);
 		
 		nt_response = data_blob_talloc(ntlmssp_state, NULL, 24);
-		SMBNTencrypt(ntlmssp_state->password,
+		SMBNTencrypt(password,
 			     session_nonce_hash,
 			     nt_response.data);
 
@@ -233,9 +254,9 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 
 		if (ntlmssp_state->use_nt_response) {
 			nt_response = data_blob_talloc(ntlmssp_state, NULL, 24);
-			SMBNTencrypt(ntlmssp_state->password,challenge_blob.data,
+			SMBNTencrypt(password,challenge_blob.data,
 				     nt_response.data);
-			E_md4hash(ntlmssp_state->password, nt_hash);
+			E_md4hash(password, nt_hash);
 			session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
 			SMBsesskeygen_ntv1(nt_hash, session_key.data);
 			dump_data_pw("NT session key:\n", session_key.data, session_key.length);
@@ -244,7 +265,7 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 		/* lanman auth is insecure, it may be disabled */
 		if (lp_client_lanman_auth()) {
 			lm_response = data_blob_talloc(ntlmssp_state, NULL, 24);
-			if (!SMBencrypt(ntlmssp_state->password,challenge_blob.data,
+			if (!SMBencrypt(password,challenge_blob.data,
 					lm_response.data)) {
 				/* If the LM password was too long (and therefore the LM hash being
 				   of the first 14 chars only), don't send it */
@@ -253,7 +274,7 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 				/* LM Key is incompatible with 'long' passwords */
 				ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
 			} else {
-				E_deshash(ntlmssp_state->password, lm_hash);
+				E_deshash(password, lm_hash);
 				lm_session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
 				memcpy(lm_session_key.data, lm_hash, 8);
 				memset(&lm_session_key.data[8], '\0', 8);
@@ -310,9 +331,9 @@ NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
 		       NTLMSSP_AUTH, 
 		       lm_response.data, lm_response.length,
 		       nt_response.data, nt_response.length,
-		       ntlmssp_state->domain, 
-		       ntlmssp_state->user, 
-		       ntlmssp_state->workstation, 
+		       domain, 
+		       user, 
+		       cli_credentials_get_workstation(gensec_security->credentials),
 		       encrypted_session_key.data, encrypted_session_key.length,
 		       ntlmssp_state->neg_flags)) {
 		
@@ -351,7 +372,6 @@ static NTSTATUS ntlmssp_client_start(TALLOC_CTX *mem_ctx, struct ntlmssp_state *
 
 	(*ntlmssp_state)->role = NTLMSSP_CLIENT;
 
-	(*ntlmssp_state)->workstation = lp_netbios_name();
 	(*ntlmssp_state)->get_domain = lp_workgroup;
 
 	(*ntlmssp_state)->unicode = lp_parm_bool(-1, "ntlmssp_client", "unicode", True);
@@ -392,7 +412,6 @@ static NTSTATUS ntlmssp_client_start(TALLOC_CTX *mem_ctx, struct ntlmssp_state *
 NTSTATUS gensec_ntlmssp_client_start(struct gensec_security *gensec_security)
 {
 	struct gensec_ntlmssp_state *gensec_ntlmssp_state;
-	const char *password = NULL;
 	NTSTATUS nt_status;
 
 	nt_status = gensec_ntlmssp_start(gensec_security);
@@ -422,22 +441,6 @@ NTSTATUS gensec_ntlmssp_client_start(struct gensec_security *gensec_security)
 		gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
 	}
 
-	nt_status = ntlmssp_set_domain(gensec_ntlmssp_state->ntlmssp_state, 
-				       cli_credentials_get_domain(gensec_security->credentials));
-	NT_STATUS_NOT_OK_RETURN(nt_status);
-	
-	nt_status = ntlmssp_set_username(gensec_ntlmssp_state->ntlmssp_state, 
-					 cli_credentials_get_username(gensec_security->credentials));
-	NT_STATUS_NOT_OK_RETURN(nt_status);
-
-	password = cli_credentials_get_password(gensec_security->credentials);
-
-	nt_status = ntlmssp_set_password(gensec_ntlmssp_state->ntlmssp_state, password);
-	NT_STATUS_NOT_OK_RETURN(nt_status);
-
-	nt_status = ntlmssp_set_workstation(gensec_ntlmssp_state->ntlmssp_state,
-					    cli_credentials_get_workstation(gensec_security->credentials));
-
 	gensec_security->private_data = gensec_ntlmssp_state;
 
 	return NT_STATUS_OK;
diff --git a/source4/auth/ntlmssp/ntlmssp_server.c b/source4/auth/ntlmssp/ntlmssp_server.c
index d1e97aeb1f..852d32ed2b 100644
--- a/source4/auth/ntlmssp/ntlmssp_server.c
+++ b/source4/auth/ntlmssp/ntlmssp_server.c
@@ -28,6 +28,51 @@
 #include "lib/crypto/crypto.h"
 #include "pstring.h"
 
+/** 
+ * Set a username on an NTLMSSP context - ensures it is talloc()ed 
+ *
+ */
+
+static NTSTATUS ntlmssp_set_username(struct ntlmssp_state *ntlmssp_state, const char *user) 
+{
+	if (!user) {
+		/* it should be at least "" */
+		DEBUG(1, ("NTLMSSP failed to set username - cannot accept NULL username\n"));
+		return NT_STATUS_INVALID_PARAMETER;
+	}
+	ntlmssp_state->user = talloc_strdup(ntlmssp_state, user);
+	if (!ntlmssp_state->user) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	return NT_STATUS_OK;
+}
+
+/** 
+ * Set a domain on an NTLMSSP context - ensures it is talloc()ed 
+ *
+ */
+static NTSTATUS ntlmssp_set_domain(struct ntlmssp_state *ntlmssp_state, const char *domain) 
+{
+	ntlmssp_state->domain = talloc_strdup(ntlmssp_state, domain);
+	if (!ntlmssp_state->domain) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	return NT_STATUS_OK;
+}
+
+/** 
+ * Set a workstation on an NTLMSSP context - ensures it is talloc()ed 
+ *
+ */
+static NTSTATUS ntlmssp_set_workstation(struct ntlmssp_state *ntlmssp_state, const char *workstation) 
+{
+	ntlmssp_state->workstation = talloc_strdup(ntlmssp_state, workstation);
+	if (!ntlmssp_state->workstation) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	return NT_STATUS_OK;
+}
+
 /**
  * Default challenge generation code.
  *
@@ -102,10 +147,12 @@ static const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
  * @return Errors or MORE_PROCESSING_REQUIRED if a reply is sent. 
  */
 
-NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
+NTSTATUS ntlmssp_server_negotiate(struct gensec_security *gensec_security, 
 				  TALLOC_CTX *out_mem_ctx, 
 				  const DATA_BLOB in, DATA_BLOB *out) 
 {
+	struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+	struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp_state->ntlmssp_state;
 	DATA_BLOB struct_blob;
 	fstring dnsname, dnsdomname;
 	uint32_t neg_flags = 0;
@@ -516,10 +563,12 @@ static NTSTATUS ntlmssp_server_postauth(struct ntlmssp_state *ntlmssp_state,
  * @return Errors, NT_STATUS_MORE_PROCESSING_REQUIRED or NT_STATUS_OK. 
  */
 
-NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
+NTSTATUS ntlmssp_server_auth(struct gensec_security *gensec_security, 
 			     TALLOC_CTX *out_mem_ctx, 
 			     const DATA_BLOB in, DATA_BLOB *out) 
 {
+	struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+	struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp_state->ntlmssp_state;
 	DATA_BLOB user_session_key = data_blob(NULL, 0);
 	DATA_BLOB lm_session_key = data_blob(NULL, 0);
 	NTSTATUS nt_status;