r8744: Split 'net samdump' out into a separate file

Work on the talloc memory tree, as I think talloc_reference and other
things were biting me.

Crush unions in the name of code reform. ;-)

Andrew Bartlett
(This used to be commit 2eadcf46699f1cc7adb2066e17096f70c7b73998)

1 files changed, 232 insertions, 0 deletions

diff --git a/source4/libnet/libnet_samdump.c b/source4/libnet/libnet_samdump.c
new file mode 100644
index 0000000000..ecedc0264f
--- /dev/null
+++ b/source4/libnet/libnet_samdump.c
@@ -0,0 +1,232 @@
+/* 
+   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
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+
+#include "includes.h"
+#include "libnet/libnet.h"
+#include "librpc/gen_ndr/ndr_netlogon.h"
+#include "librpc/gen_ndr/ndr_samr.h"
+#include "dlinklist.h"
+
+
+struct samdump_secret {
+	struct samdump_secret *prev, *next;
+	DATA_BLOB secret;
+	char *name;
+	NTTIME mtime;
+};
+
+struct samdump_trusted_domain {
+	struct samdump_trusted_domain *prev, *next;
+        struct dom_sid *sid;
+	char *name;
+};
+
+struct samdump_state {
+	struct samdump_secret *secrets;
+	struct samdump_trusted_domain *trusted_domains;
+};
+
+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 vampire_samdump_handle_secret(TALLOC_CTX *mem_ctx,
+					      struct samdump_state *samdump_state,
+					      struct creds_CredentialState *creds,
+					      struct netr_DELTA_ENUM *delta) 
+{
+	struct netr_DELTA_SECRET *secret = delta->delta_union.secret;
+	const char *name = delta->delta_id_union.name;
+	struct samdump_secret *new = talloc(samdump_state, struct samdump_secret);
+
+	new->name = talloc_steal(new, name);
+	new->secret = data_blob_talloc(new, secret->current_cipher.cipher_data, secret->current_cipher.maxlen);
+	new->mtime = secret->current_cipher_set_time;
+
+	DLIST_ADD(samdump_state->secrets, new);
+
+	return NT_STATUS_OK;
+}
+
+static NTSTATUS vampire_samdump_handle_trusted_domain(TALLOC_CTX *mem_ctx,
+					      struct samdump_state *samdump_state,
+					      struct creds_CredentialState *creds,
+					      struct netr_DELTA_ENUM *delta) 
+{
+	struct netr_DELTA_TRUSTED_DOMAIN *trusted_domain = delta->delta_union.trusted_domain;
+	struct dom_sid *dom_sid = delta->delta_id_union.sid;
+
+	struct samdump_trusted_domain *new = talloc(samdump_state, struct samdump_trusted_domain);
+
+	new->name = talloc_steal(new, trusted_domain->domain_name.string);
+	new->sid = talloc_steal(new, dom_sid);
+
+	DLIST_ADD(samdump_state->trusted_domains, new);
+
+	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;
+	struct samdump_state *samdump_state = private;
+
+	*error_string = NULL;
+	switch (delta->delta_type) {
+	case NETR_DELTA_USER:
+	{
+		/* not interested in builtin users */
+		if (database == SAM_DATABASE_DOMAIN) {
+			nt_status = vampire_samdump_handle_user(mem_ctx, 
+								creds,
+								delta);
+			break;
+		}
+	}
+	case NETR_DELTA_SECRET:
+	{
+		nt_status = vampire_samdump_handle_secret(mem_ctx,
+							  samdump_state,
+							  creds,
+							  delta);
+		break;
+	}
+	case NETR_DELTA_TRUSTED_DOMAIN:
+	{
+		nt_status = vampire_samdump_handle_trusted_domain(mem_ctx,
+								  samdump_state,
+								  creds,
+								  delta);
+		break;
+	}
+	default:
+		/* Can't dump them all right now */
+		break;
+	}
+	return nt_status;
+}
+
+static NTSTATUS libnet_SamDump_netlogon(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_SamDump *r)
+{
+	NTSTATUS nt_status;
+	struct libnet_SamSync r2;
+	struct samdump_state *samdump_state = talloc(mem_ctx, struct samdump_state);
+
+	struct samdump_trusted_domain *t;
+	struct samdump_secret *s;
+
+	if (!samdump_state) {
+		return NT_STATUS_NO_MEMORY;
+	}
+
+	samdump_state->secrets = NULL;
+	samdump_state->trusted_domains = NULL;
+
+	r2.error_string = NULL;
+	r2.delta_fn = libnet_samdump_fn;
+	r2.fn_ctx = samdump_state;
+	r2.machine_account = NULL; /* TODO:  Create a machine account, fill this in, and the delete it */
+	nt_status = libnet_SamSync_netlogon(ctx, samdump_state, &r2);
+	r->error_string = r2.error_string;
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		talloc_free(samdump_state);
+		return nt_status;
+	}
+
+	printf("Trusted domains, sids and secrets:\n");
+	for (t=samdump_state->trusted_domains; t; t=t->next) {
+		char *secret_name = talloc_asprintf(mem_ctx, "G$$%s", t->name);
+		for (s=samdump_state->secrets; s; s=s->next) {
+			if (StrCaseCmp(s->name, secret_name) == 0) {
+				char *secret_string;
+				if (convert_string_talloc(mem_ctx, CH_UTF16, CH_UNIX, 
+							  s->secret.data, s->secret.length, 
+							  (void **)&secret_string) == -1) {
+					r->error_string = talloc_asprintf(mem_ctx, 
+									  "Could not convert secret for domain %s to a string\n",
+									  t->name);
+					talloc_free(samdump_state);
+					return NT_STATUS_INVALID_PARAMETER;
+				}
+				printf("%s\t%s\t%s\n", 
+				       t->name, dom_sid_string(mem_ctx, t->sid), 
+				       secret_string);
+			}
+		}
+	}
+	talloc_free(samdump_state);
+	return nt_status;
+}
+
+
+
+static NTSTATUS libnet_SamDump_generic(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_SamDump *r)
+{
+	NTSTATUS nt_status;
+	struct libnet_SamDump r2;
+	r2.level = LIBNET_SAMDUMP_NETLOGON;
+	r2.error_string = NULL;
+	nt_status = libnet_SamDump(ctx, mem_ctx, &r2);
+	r->error_string = r2.error_string;
+	
+	return nt_status;
+}
+
+NTSTATUS libnet_SamDump(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_SamDump *r)
+{
+	switch (r->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;
+}