r1009: Make all users of NT and LM passwords use the samr_Password structure.

This includes the netlogon pipe, for the machine account password
change system.

Andrew Bartlett
(This used to be commit 49d545a82057ee8b60d50aa55e908efe59875150)

2 files changed, 48 insertions, 37 deletions

diff --git a/source4/rpc_server/samr/samdb.c b/source4/rpc_server/samr/samdb.c
index 37063b551d..e6862eb8f9 100644
--- a/source4/rpc_server/samr/samdb.c
+++ b/source4/rpc_server/samr/samdb.c
@@ -482,11 +482,11 @@ NTTIME samdb_result_force_pwd_change(void *ctx, TALLOC_CTX *mem_ctx,
 }
 
 /*
-  pull a samr_Hash structutre from a result set. 
+  pull a samr_Password structutre from a result set. 
 */
-struct samr_Hash samdb_result_hash(struct ldb_message *msg, const char *attr)
+struct samr_Password samdb_result_hash(struct ldb_message *msg, const char *attr)
 {
-	struct samr_Hash hash;
+	struct samr_Password hash;
 	const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
 	ZERO_STRUCT(hash);
 	if (val) {
@@ -496,10 +496,10 @@ struct samr_Hash samdb_result_hash(struct ldb_message *msg, const char *attr)
 }
 
 /*
-  pull an array of samr_Hash structutres from a result set. 
+  pull an array of samr_Password structutres from a result set. 
 */
 uint_t samdb_result_hashes(TALLOC_CTX *mem_ctx, struct ldb_message *msg, 
-			   const char *attr, struct samr_Hash **hashes)
+			   const char *attr, struct samr_Password **hashes)
 {
 	uint_t count = 0;
 	const struct ldb_val *val = ldb_msg_find_ldb_val(msg, attr);
@@ -514,7 +514,7 @@ uint_t samdb_result_hashes(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
 		return 0;
 	}
 
-	*hashes = talloc_array_p(mem_ctx, struct samr_Hash, count);
+	*hashes = talloc_array_p(mem_ctx, struct samr_Password, count);
 	if (! *hashes) {
 		return 0;
 	}
@@ -527,27 +527,27 @@ uint_t samdb_result_hashes(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
 }
 
 NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct ldb_message *msg, 
-				uint8_t **lm_pwd, uint8_t **nt_pwd) 
+				struct samr_Password **lm_pwd, struct samr_Password **nt_pwd) 
 {
 
 	const char *unicodePwd = samdb_result_string(msg, "unicodePwd", NULL);
 	
-	struct samr_Hash *lmPwdHash, *ntPwdHash;
+	struct samr_Password *lmPwdHash, *ntPwdHash;
 	if (unicodePwd) {
 		if (nt_pwd) {
-			ntPwdHash = talloc_p(mem_ctx, struct samr_Hash);
+			ntPwdHash = talloc_p(mem_ctx, struct samr_Password);
 			if (!ntPwdHash) {
 				return NT_STATUS_NO_MEMORY;
 			}
 			
 			E_md4hash(unicodePwd, ntPwdHash->hash);
-			*nt_pwd = ntPwdHash->hash;
+			*nt_pwd = ntPwdHash;
 		}
 
 		if (lm_pwd) {
 			BOOL lm_hash_ok;
 		
-			lmPwdHash = talloc_p(mem_ctx, struct samr_Hash);
+			lmPwdHash = talloc_p(mem_ctx, struct samr_Password);
 			if (!lmPwdHash) {
 				return NT_STATUS_NO_MEMORY;
 			}
@@ -556,7 +556,7 @@ NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
 			lm_hash_ok = E_deshash(unicodePwd, lmPwdHash->hash);
 			
 			if (lm_hash_ok) {
-				*lm_pwd = lmPwdHash->hash;
+				*lm_pwd = lmPwdHash;
 			} else {
 				*lm_pwd = NULL;
 			}
@@ -570,7 +570,7 @@ NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
 			} else if (num_nt > 1) {
 				return NT_STATUS_INTERNAL_DB_CORRUPTION;
 			} else {
-				*nt_pwd = ntPwdHash[0].hash;
+				*nt_pwd = &ntPwdHash[0];
 			}
 		}
 		if (lm_pwd) {
@@ -581,7 +581,7 @@ NTSTATUS samdb_result_passwords(TALLOC_CTX *mem_ctx, struct ldb_message *msg,
 			} else if (num_lm > 1) {
 				return NT_STATUS_INTERNAL_DB_CORRUPTION;
 			} else {
-				*lm_pwd = lmPwdHash[0].hash;
+				*lm_pwd = &lmPwdHash[0];
 			}
 		}
 		
@@ -824,10 +824,10 @@ int samdb_msg_add_uint64(void *ctx, TALLOC_CTX *mem_ctx, struct ldb_message *msg
 }
 
 /*
-  add a samr_Hash element to a message
+  add a samr_Password element to a message
 */
 int samdb_msg_add_hash(void *ctx, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
-		       const char *attr_name, struct samr_Hash hash)
+		       const char *attr_name, struct samr_Password hash)
 {
 	struct samdb_context *sam_ctx = ctx;
 	struct ldb_val val;
@@ -842,10 +842,10 @@ int samdb_msg_add_hash(void *ctx, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
 }
 
 /*
-  add a samr_Hash array to a message
+  add a samr_Password array to a message
 */
 int samdb_msg_add_hashes(void *ctx, TALLOC_CTX *mem_ctx, struct ldb_message *msg,
-			 const char *attr_name, struct samr_Hash *hashes, uint_t count)
+			 const char *attr_name, struct samr_Password *hashes, uint_t count)
 {
 	struct samdb_context *sam_ctx = ctx;
 	struct ldb_val val;
diff --git a/source4/rpc_server/samr/samr_password.c b/source4/rpc_server/samr/samr_password.c
index 228b8b53c0..b1dc4a7f6b 100644
--- a/source4/rpc_server/samr/samr_password.c
+++ b/source4/rpc_server/samr/samr_password.c
@@ -34,8 +34,8 @@ NTSTATUS samr_ChangePasswordUser(struct dcesrv_call_state *dce_call, TALLOC_CTX
 	struct samr_account_state *a_state;
 	struct ldb_message **res, mod, *msg;
 	int ret;
-	struct samr_Hash new_lmPwdHash, new_ntPwdHash, checkHash;
-	uint8 *lm_pwd, *nt_pwd;
+	struct samr_Password new_lmPwdHash, new_ntPwdHash, checkHash;
+	struct samr_Password *lm_pwd, *nt_pwd;
 	NTSTATUS status = NT_STATUS_OK;
 	const char * const attrs[] = { "lmPwdHash", "ntPwdHash" , "unicodePwd", NULL };
 
@@ -72,27 +72,27 @@ NTSTATUS samr_ChangePasswordUser(struct dcesrv_call_state *dce_call, TALLOC_CTX
 	}
 
 	/* decrypt and check the new lm hash */
-	D_P16(lm_pwd, r->in.new_lm_crypted->hash, new_lmPwdHash.hash);
+	D_P16(lm_pwd->hash, r->in.new_lm_crypted->hash, new_lmPwdHash.hash);
 	D_P16(new_lmPwdHash.hash, r->in.old_lm_crypted->hash, checkHash.hash);
 	if (memcmp(checkHash.hash, lm_pwd, 16) != 0) {
 		return NT_STATUS_WRONG_PASSWORD;
 	}
 
 	/* decrypt and check the new nt hash */
-	D_P16(nt_pwd, r->in.new_nt_crypted->hash, new_ntPwdHash.hash);
+	D_P16(nt_pwd->hash, r->in.new_nt_crypted->hash, new_ntPwdHash.hash);
 	D_P16(new_ntPwdHash.hash, r->in.old_nt_crypted->hash, checkHash.hash);
 	if (memcmp(checkHash.hash, nt_pwd, 16) != 0) {
 		return NT_STATUS_WRONG_PASSWORD;
 	}
 	
 	/* check the nt cross hash */
-	D_P16(lm_pwd, r->in.nt_cross->hash, checkHash.hash);
+	D_P16(lm_pwd->hash, r->in.nt_cross->hash, checkHash.hash);
 	if (memcmp(checkHash.hash, new_ntPwdHash.hash, 16) != 0) {
 		return NT_STATUS_WRONG_PASSWORD;
 	}
 
 	/* check the lm cross hash */
-	D_P16(nt_pwd, r->in.lm_cross->hash, checkHash.hash);
+	D_P16(nt_pwd->hash, r->in.lm_cross->hash, checkHash.hash);
 	if (memcmp(checkHash.hash, new_lmPwdHash.hash, 16) != 0) {
 		return NT_STATUS_WRONG_PASSWORD;
 	}
@@ -136,7 +136,8 @@ NTSTATUS samr_OemChangePasswordUser2(struct dcesrv_call_state *dce_call, TALLOC_
 	struct ldb_message **res, mod;
 	const char * const attrs[] = { "objectSid", "lmPwdHash", "unicodePwd", NULL };
 	const char *domain_sid;
-	uint8 *lm_pwd;
+	struct samr_Password *lm_pwd;
+	DATA_BLOB lm_pwd_blob;
 
 	if (pwbuf == NULL) {
 		return NT_STATUS_WRONG_PASSWORD;
@@ -169,8 +170,10 @@ NTSTATUS samr_OemChangePasswordUser2(struct dcesrv_call_state *dce_call, TALLOC_
 	}
 
 	/* decrypt the password we have been given */
-	arcfour_crypt(pwbuf->data, lm_pwd, 516);
-
+	lm_pwd_blob = data_blob(lm_pwd->hash, sizeof(lm_pwd->hash)); 
+	arcfour_crypt_blob(pwbuf->data, 516, &lm_pwd_blob);
+	data_blob_free(&lm_pwd_blob);
+	
 	if (!decode_pw_buffer(pwbuf->data, new_pass, sizeof(new_pass),
 			      &new_pass_len, STR_ASCII)) {
 		DEBUG(3,("samr: failed to decode password buffer\n"));
@@ -243,7 +246,8 @@ NTSTATUS samr_ChangePasswordUser3(struct dcesrv_call_state *dce_call,
 					   "pwdProperties", "minPwdAge", "maxPwdAge", 
 					   NULL };
 	const char *domain_sid;
-	uint8 *nt_pwd;
+	struct samr_Password *nt_pwd;
+	DATA_BLOB nt_pwd_blob;
 	struct samr_DomInfo1 *dominfo;
 	struct samr_ChangeReject *reject;
 	uint32_t reason = 0;
@@ -279,12 +283,19 @@ NTSTATUS samr_ChangePasswordUser3(struct dcesrv_call_state *dce_call,
 	user_dn = res[0]->dn;
 
 	status = samdb_result_passwords(mem_ctx, res[0], NULL, &nt_pwd);
-	if (!NT_STATUS_IS_OK(status)) {
+	if (!NT_STATUS_IS_OK(status) ) {
+		goto failed;
+	}
+
+	if (!nt_pwd) {
+		status = NT_STATUS_WRONG_PASSWORD;
 		goto failed;
 	}
 
 	/* decrypt the password we have been given */
-	arcfour_crypt(r->in.nt_password->data, nt_pwd, 516);
+	nt_pwd_blob = data_blob(nt_pwd->hash, sizeof(nt_pwd->hash));
+	arcfour_crypt_blob(r->in.nt_password->data, 516, &nt_pwd_blob);
+	data_blob_free(&nt_pwd_blob);
 
 	if (!decode_pw_buffer(r->in.nt_password->data, new_pass, sizeof(new_pass),
 			      &new_pass_len, STR_UNICODE)) {
@@ -425,8 +436,8 @@ NTSTATUS samdb_set_password(void *ctx, TALLOC_CTX *mem_ctx,
 			    const char *user_dn, const char *domain_dn,
 			    struct ldb_message *mod,
 			    const char *new_pass,
-			    struct samr_Hash *lmNewHash, 
-			    struct samr_Hash *ntNewHash,
+			    struct samr_Password *lmNewHash, 
+			    struct samr_Password *ntNewHash,
 			    BOOL user_change,
 			    uint32_t *reject_reason)
 {
@@ -442,9 +453,9 @@ NTSTATUS samdb_set_password(void *ctx, TALLOC_CTX *mem_ctx,
 	int64_t minPwdAge;
 	uint_t minPwdLength, pwdProperties, pwdHistoryLength;
 	uint_t userAccountControl, badPwdCount;
-	struct samr_Hash *lmPwdHistory, *ntPwdHistory, lmPwdHash, ntPwdHash;
-	struct samr_Hash *new_lmPwdHistory, *new_ntPwdHistory;
-	struct samr_Hash local_lmNewHash, local_ntNewHash;
+	struct samr_Password *lmPwdHistory, *ntPwdHistory, lmPwdHash, ntPwdHash;
+	struct samr_Password *new_lmPwdHistory, *new_ntPwdHistory;
+	struct samr_Password local_lmNewHash, local_ntNewHash;
 	int lmPwdHistory_len, ntPwdHistory_len;
 	struct ldb_message **res;
 	int count;
@@ -623,12 +634,12 @@ NTSTATUS samdb_set_password(void *ctx, TALLOC_CTX *mem_ctx,
 	}
 	
 	/* store the password history */
-	new_lmPwdHistory = talloc_array_p(mem_ctx, struct samr_Hash, 
+	new_lmPwdHistory = talloc_array_p(mem_ctx, struct samr_Password, 
 					  pwdHistoryLength);
 	if (!new_lmPwdHistory) {
 		return NT_STATUS_NO_MEMORY;
 	}
-	new_ntPwdHistory = talloc_array_p(mem_ctx, struct samr_Hash, 
+	new_ntPwdHistory = talloc_array_p(mem_ctx, struct samr_Password, 
 					  pwdHistoryLength);
 	if (!new_ntPwdHistory) {
 		return NT_STATUS_NO_MEMORY;