X-Git-Url: http://git.samba.org/?a=blobdiff_plain;f=source4%2Flibnet%2Flibnet_vampire.c;h=26e39392051f1b3f2e10fb272f83926f082db300;hb=a5a79e8b8cbdf24d5c2db45ece4110ed5d85e58f;hp=fb6098ed17586f47378edad0c5023583651941f4;hpb=ed8144154ae91e588e6bee7350d1d831256803e9;p=samba.git

diff --git a/source4/libnet/libnet_vampire.c b/source4/libnet/libnet_vampire.c
index fb6098ed175..26e39392051 100644
--- a/source4/libnet/libnet_vampire.c
+++ b/source4/libnet/libnet_vampire.c
@@ -1,6 +1,8 @@
 /* 
    Unix SMB/CIFS implementation.
    
+   Extract the user/system database from a remote SamSync server
+
    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
    
    This program is free software; you can redistribute it and/or modify
@@ -21,60 +23,7 @@
 
 #include "includes.h"
 #include "libnet/libnet.h"
-#include "librpc/gen_ndr/ndr_netlogon.h"
-#include "librpc/gen_ndr/ndr_samr.h"
-
-static NTSTATUS vampire_samdump_handle_user(TALLOC_CTX *mem_ctx,
-					    struct creds_CredentialState *creds,
-					    struct netr_DELTA_ENUM *delta) 
-{
-	uint32_t rid = delta->delta_id_union.rid;
-	struct netr_DELTA_USER *user = delta->delta_union.user;
-	const char *username = user->account_name.string;
-	char *hex_lm_password;
-	char *hex_nt_password;
-
-	hex_lm_password = smbpasswd_sethexpwd(mem_ctx, 
-					      user->lm_password_present ? &user->lmpassword : NULL, 
-					      user->acct_flags);
-	hex_nt_password = smbpasswd_sethexpwd(mem_ctx, 
-					      user->nt_password_present ? &user->ntpassword : NULL, 
-					      user->acct_flags);
-
-	printf("%s:%d:%s:%s:%s:LCT-%08X\n", username,
-	       rid, hex_lm_password, hex_nt_password,
-	       smbpasswd_encode_acb_info(mem_ctx, user->acct_flags),
-	       (unsigned int)nt_time_to_unix(user->last_password_change));
 
-	return NT_STATUS_OK;
-}
-
-static NTSTATUS libnet_samdump_fn(TALLOC_CTX *mem_ctx, 		
-				  void *private, 			
-				  struct creds_CredentialState *creds,
-				  enum netr_SamDatabaseID database,
-				  struct netr_DELTA_ENUM *delta,
-				  char **error_string)
-{
-	NTSTATUS nt_status = NT_STATUS_OK;
-	*error_string = NULL;
-	switch (database) {
-	case SAM_DATABASE_DOMAIN: 
-	{
-		switch (delta->delta_type) {
-		case NETR_DELTA_USER:
-		{
-			nt_status = vampire_samdump_handle_user(mem_ctx, 
-								creds,
-								delta);
-			break;
-		}
-		}
-		break;
-	}
-	}
-	return nt_status;
-}
 
 /**
  * Decrypt and extract the user's passwords.  
@@ -135,6 +84,27 @@ static NTSTATUS fix_user(TALLOC_CTX *mem_ctx,
 	return NT_STATUS_OK;
 }
 
+/**
+ * Decrypt and extract the secrets
+ * 
+ * The writes decrypted secrets back into the structure
+ */
+static NTSTATUS fix_secret(TALLOC_CTX *mem_ctx,
+			   struct creds_CredentialState *creds,
+			   enum netr_SamDatabaseID database,
+			   struct netr_DELTA_ENUM *delta,
+			   char **error_string) 
+{
+	struct netr_DELTA_SECRET *secret = delta->delta_union.secret;
+	creds_arcfour_crypt(creds, secret->current_cipher.cipher_data, 
+			    secret->current_cipher.maxlen); 
+
+	creds_arcfour_crypt(creds, secret->old_cipher.cipher_data, 
+			    secret->old_cipher.maxlen); 
+
+	return NT_STATUS_OK;
+}
+
 /**
  * Fix up the delta, dealing with encryption issues so that the final
  * callback need only do the printing or application logic
@@ -158,84 +128,141 @@ static NTSTATUS fix_delta(TALLOC_CTX *mem_ctx,
 				     error_string);
 		break;
 	}
+	case NETR_DELTA_SECRET:
+	{
+		nt_status = fix_secret(mem_ctx, 
+				       creds,
+				       database,
+				       delta,
+				       error_string);
+		break;
+	}
+	default:
+		break;
 	}
 	return nt_status;
 }
 
-static NTSTATUS libnet_SamSync_netlogon(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SamSync *r)
+NTSTATUS libnet_SamSync_netlogon(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_SamSync *r)
 {
 	NTSTATUS nt_status, dbsync_nt_status;
-	TALLOC_CTX *loop_ctx, *delta_ctx;
+	TALLOC_CTX *samsync_ctx, *loop_ctx, *delta_ctx;
 	struct creds_CredentialState *creds;
 	struct netr_DatabaseSync dbsync;
 	struct cli_credentials *machine_account;
-	struct dcerpc_binding *b;
 	struct dcerpc_pipe *p;
+	struct libnet_context *machine_net_ctx;
+	struct libnet_RpcConnect *c;
 	const enum netr_SamDatabaseID database_ids[] = {SAM_DATABASE_DOMAIN, SAM_DATABASE_BUILTIN, SAM_DATABASE_PRIVS}; 
 	int i;
 
-	/* TODO: This is bogus */
-	const char **bindings = lp_passwordserver();
-	const char *binding;
+	samsync_ctx = talloc_named(mem_ctx, 0, "SamSync top context");
 
-	if (bindings && bindings[0]) {
-		binding = bindings[0];
-	}
-
-	machine_account = cli_credentials_init(mem_ctx);
-	if (!machine_account) {
-		return NT_STATUS_NO_MEMORY;
+	if (!r->in.machine_account) { 
+		machine_account = cli_credentials_init(samsync_ctx);
+		if (!machine_account) {
+			talloc_free(samsync_ctx);
+			return NT_STATUS_NO_MEMORY;
+		}
+		cli_credentials_set_conf(machine_account);
+		nt_status = cli_credentials_set_machine_account(machine_account);
+		if (!NT_STATUS_IS_OK(nt_status)) {
+			r->out.error_string = talloc_strdup(mem_ctx, "Could not obtain machine account password - are we joined to the domain?");
+			talloc_free(samsync_ctx);
+			return nt_status;
+		}
+	} else {
+		machine_account = r->in.machine_account;
 	}
 
-	cli_credentials_set_conf(machine_account);
-	nt_status = cli_credentials_set_machine_account(machine_account);
-	
-	if (!NT_STATUS_IS_OK(nt_status)) {
-		r->netlogon.error_string = talloc_strdup(mem_ctx, "Could not obtain machine account password - are we joined to the domain?");
-		return nt_status;
-	}
-	
+	/* We cannot do this unless we are a BDC.  Check, before we get odd errors later */
 	if (cli_credentials_get_secure_channel_type(machine_account) != SEC_CHAN_BDC) {
-		r->netlogon.error_string
+		r->out.error_string
 			= talloc_asprintf(mem_ctx, 
 					  "Our join to domain %s is not as a BDC (%d), please rejoin as a BDC",
 					  
 					  cli_credentials_get_domain(machine_account),
 					  cli_credentials_get_secure_channel_type(machine_account));
+		talloc_free(samsync_ctx);
 		return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
 	}
 
-	/* Connect to DC (take a binding string for now) */
+	c = talloc(samsync_ctx, struct libnet_RpcConnect);
+	if (!c) {
+		r->out.error_string = NULL;
+		talloc_free(samsync_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
 
-	nt_status = dcerpc_parse_binding(mem_ctx, binding, &b);
+	if (r->in.binding_string) {
+		c->level      = LIBNET_RPC_CONNECT_BINDING;
+		c->in.binding = r->in.binding_string;
+	} else {
+		/* prepare connect to the NETLOGON pipe of PDC */
+		c->level      = LIBNET_RPC_CONNECT_PDC;
+		c->in.name    = cli_credentials_get_domain(machine_account);
+	}
+	c->in.dcerpc_iface      = &dcerpc_table_netlogon;
+
+	/* We must do this as the machine, not as any command-line
+	 * user.  So we override the credentials in the
+	 * libnet_context */
+	machine_net_ctx = talloc(samsync_ctx, struct libnet_context);
+	if (!machine_net_ctx) {
+		r->out.error_string = NULL;
+		talloc_free(samsync_ctx);
+		return NT_STATUS_NO_MEMORY;
+	}
+	*machine_net_ctx = *ctx;
+	machine_net_ctx->cred = machine_account;
+
+	/* connect to the NETLOGON pipe of the PDC */
+	nt_status = libnet_RpcConnect(machine_net_ctx, c, c);
 	if (!NT_STATUS_IS_OK(nt_status)) {
-		r->netlogon.error_string = talloc_asprintf(mem_ctx, "Bad binding string %s\n", binding);
-		return NT_STATUS_INVALID_PARAMETER;
+		r->out.error_string = talloc_asprintf(mem_ctx,
+						      "Connection to NETLOGON pipe of DC failed: %s",
+						      c->out.error_string);
+		talloc_free(samsync_ctx);
+		return nt_status;
 	}
 
-	/* We like schannel */
-	b->flags &= ~DCERPC_AUTH_OPTIONS;
-	b->flags |= DCERPC_SCHANNEL | DCERPC_SEAL | DCERPC_SCHANNEL_128;
+	/* This makes a new pipe, on which we can do schannel.  We
+	 * should do this in the RpcConnect code, but the abstaction
+	 * layers do not suit yet */
 
-	/* Setup schannel */
-	nt_status = dcerpc_pipe_connect_b(mem_ctx, &p, b, 
-					  DCERPC_NETLOGON_UUID,
-					  DCERPC_NETLOGON_VERSION,
-					  machine_account);
+	nt_status = dcerpc_secondary_connection(c->out.dcerpc_pipe, &p,
+						c->out.dcerpc_pipe->binding);
 
 	if (!NT_STATUS_IS_OK(nt_status)) {
+		r->out.error_string = talloc_asprintf(mem_ctx,
+						      "Secondary connection to NETLOGON pipe of DC %s failed: %s",
+						      dcerpc_server_name(p), nt_errstr(nt_status));
+		talloc_free(samsync_ctx);
+		return nt_status;
+	}
+
+	nt_status = dcerpc_bind_auth_schannel(samsync_ctx, p, &dcerpc_table_netlogon,
+					      machine_account, DCERPC_AUTH_LEVEL_PRIVACY);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		r->out.error_string = talloc_asprintf(mem_ctx,
+						      "SCHANNEL authentication to NETLOGON pipe of DC %s failed: %s",
+						      dcerpc_server_name(p), nt_errstr(nt_status));
+		talloc_free(samsync_ctx);
 		return nt_status;
 	}
 
 	/* get NETLOGON credentails */
 
-	nt_status = dcerpc_schannel_creds(p->conn->security_state.generic_state, mem_ctx, &creds);
+	nt_status = dcerpc_schannel_creds(p->conn->security_state.generic_state, samsync_ctx, &creds);
 	if (!NT_STATUS_IS_OK(nt_status)) {
-		r->netlogon.error_string = talloc_strdup(mem_ctx, "Could not obtain NETLOGON credentials from DCERPC/GENSEC layer");
+		r->out.error_string = talloc_strdup(mem_ctx, "Could not obtain NETLOGON credentials from DCERPC/GENSEC layer");
+		talloc_free(samsync_ctx);
 		return nt_status;
 	}
 
-	dbsync.in.logon_server = talloc_asprintf(mem_ctx, "\\\\%s", dcerpc_server_name(p));
+	/* Setup details for the syncronisation */
+	dbsync.in.logon_server = talloc_asprintf(samsync_ctx, "\\\\%s", dcerpc_server_name(p));
 	dbsync.in.computername = cli_credentials_get_workstation(machine_account);
 	dbsync.in.preferredmaximumlength = (uint32_t)-1;
 	ZERO_STRUCT(dbsync.in.return_authenticator);
@@ -246,45 +273,54 @@ static NTSTATUS libnet_SamSync_netlogon(struct libnet_context *ctx, TALLOC_CTX *
 		
 		do {
 			int d;
-			loop_ctx = talloc_named(mem_ctx, 0, "DatabaseSync loop context");
+			loop_ctx = talloc_named(samsync_ctx, 0, "DatabaseSync loop context");
 			creds_client_authenticator(creds, &dbsync.in.credential);
 			
 			dbsync_nt_status = dcerpc_netr_DatabaseSync(p, loop_ctx, &dbsync);
 			if (!NT_STATUS_IS_OK(dbsync_nt_status) &&
 			    !NT_STATUS_EQUAL(dbsync_nt_status, STATUS_MORE_ENTRIES)) {
-				r->netlogon.error_string = talloc_asprintf(mem_ctx, "DatabaseSync failed - %s", nt_errstr(nt_status));
+				r->out.error_string = talloc_asprintf(samsync_ctx, "DatabaseSync failed - %s", nt_errstr(nt_status));
+				talloc_free(samsync_ctx);
 				return nt_status;
 			}
 			
 			if (!creds_client_check(creds, &dbsync.out.return_authenticator.cred)) {
-				r->netlogon.error_string = talloc_strdup(mem_ctx, "Credential chaining failed");
+				r->out.error_string = talloc_strdup(samsync_ctx, "Credential chaining failed");
+				talloc_free(samsync_ctx);
 				return NT_STATUS_ACCESS_DENIED;
 			}
 			
 			dbsync.in.sync_context = dbsync.out.sync_context;
 			
+			/* For every single remote 'delta' entry: */
 			for (d=0; d < dbsync.out.delta_enum_array->num_deltas; d++) {
 				char *error_string = NULL;
 				delta_ctx = talloc_named(loop_ctx, 0, "DatabaseSync delta context");
+				/* 'Fix' elements, by decrypting and
+				 * de-obfustiating the data */
 				nt_status = fix_delta(delta_ctx, 
 						      creds, 
 						      dbsync.in.database_id,
 						      &dbsync.out.delta_enum_array->delta_enum[d], 
 						      &error_string);
 				if (!NT_STATUS_IS_OK(nt_status)) {
-					r->netlogon.error_string = talloc_steal(mem_ctx, error_string);
-					talloc_free(delta_ctx);
+					r->out.error_string = talloc_steal(samsync_ctx, error_string);
+					talloc_free(samsync_ctx);
 					return nt_status;
 				}
-				nt_status = r->netlogon.delta_fn(delta_ctx, 
-								 r->netlogon.fn_ctx,
-								 creds,
-								 dbsync.in.database_id,
-								 &dbsync.out.delta_enum_array->delta_enum[d], 
-								 &error_string);
+
+				/* Now call the callback.  This will
+				 * do something like print the data or
+				 * write to an ldb */
+				nt_status = r->in.delta_fn(delta_ctx, 
+							   r->in.fn_ctx,
+							   creds,
+							   dbsync.in.database_id,
+							   &dbsync.out.delta_enum_array->delta_enum[d], 
+							   &error_string);
 				if (!NT_STATUS_IS_OK(nt_status)) {
-					r->netlogon.error_string = talloc_steal(mem_ctx, error_string);
-					talloc_free(delta_ctx);
+					r->out.error_string = talloc_steal(samsync_ctx, error_string);
+					talloc_free(samsync_ctx);
 					return nt_status;
 				}
 				talloc_free(delta_ctx);
@@ -293,49 +329,7 @@ static NTSTATUS libnet_SamSync_netlogon(struct libnet_context *ctx, TALLOC_CTX *
 		} while (NT_STATUS_EQUAL(dbsync_nt_status, STATUS_MORE_ENTRIES));
 		nt_status = dbsync_nt_status;
 	}
+	talloc_free(samsync_ctx);
 	return nt_status;
 }
 
-NTSTATUS libnet_SamDump_netlogon(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SamDump *r)
-{
-	NTSTATUS nt_status;
-	union libnet_SamSync r2;
-
-	r2.netlogon.level = LIBNET_SAMDUMP_NETLOGON;
-	r2.netlogon.error_string = NULL;
-	r2.netlogon.delta_fn = libnet_samdump_fn;
-	r2.netlogon.fn_ctx = NULL;
-	nt_status = libnet_SamSync_netlogon(ctx, mem_ctx, &r2);
-	r->generic.error_string = r2.netlogon.error_string;
-
-	
-	return nt_status;
-}
-
-
-
-NTSTATUS libnet_SamDump_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SamDump *r)
-{
-	NTSTATUS nt_status;
-	union libnet_SamDump r2;
-
-	r2.generic.level = LIBNET_SAMDUMP_NETLOGON;
-	r2.generic.error_string = NULL;
-	nt_status = libnet_SamDump(ctx, mem_ctx, &r2);
-	r->generic.error_string = r2.netlogon.error_string;
-
-	
-	return nt_status;
-}
-
-NTSTATUS libnet_SamDump(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, union libnet_SamDump *r)
-{
-	switch (r->generic.level) {
-	case LIBNET_SAMDUMP_GENERIC:
-		return libnet_SamDump_generic(ctx, mem_ctx, r);
-	case LIBNET_SAMDUMP_NETLOGON:
-		return libnet_SamDump_netlogon(ctx, mem_ctx, r);
-	}
-
-	return NT_STATUS_INVALID_LEVEL;
-}