Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 218 insertions, 0 deletions

diff --git a/source3/utils/netlookup.c b/source3/utils/netlookup.c
new file mode 100644
index 0000000..aaf78b0
--- /dev/null
+++ b/source3/utils/netlookup.c
@@ -0,0 +1,218 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Name lookup.
+
+   Copyright (C) Jeremy Allison 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "utils/net.h"
+#include "rpc_client/cli_pipe.h"
+#include "../librpc/gen_ndr/ndr_lsa.h"
+#include "rpc_client/cli_lsarpc.h"
+#include "libsmb/libsmb.h"
+
+/********************************************************
+ Connection cachine struct. Goes away when ctx destroyed.
+********************************************************/
+
+struct con_struct {
+	bool failed_connect;
+	NTSTATUS err;
+	struct cli_state *cli;
+	struct rpc_pipe_client *lsapipe;
+	struct policy_handle pol;
+};
+
+static struct con_struct *cs;
+
+/********************************************************
+ Close connection on context destruction.
+********************************************************/
+
+static int cs_destructor(struct con_struct *p)
+{
+	if (cs->cli) {
+		cli_shutdown(cs->cli);
+	}
+	cs = NULL;
+	return 0;
+}
+
+/********************************************************
+ Create the connection to localhost.
+********************************************************/
+
+static struct con_struct *create_cs(struct net_context *c,
+				    TALLOC_CTX *ctx, NTSTATUS *perr)
+{
+	NTSTATUS nt_status;
+	struct sockaddr_storage loopback_ss;
+	struct cli_credentials *anon_creds = NULL;
+
+	*perr = NT_STATUS_OK;
+
+	if (!interpret_string_addr(&loopback_ss, "127.0.0.1", AI_NUMERICHOST)) {
+		*perr = NT_STATUS_INVALID_PARAMETER;
+		return NULL;
+	}
+
+	if (cs) {
+		if (cs->failed_connect) {
+			*perr = cs->err;
+			return NULL;
+		}
+		return cs;
+	}
+
+	cs = talloc(ctx, struct con_struct);
+	if (!cs) {
+		*perr = NT_STATUS_NO_MEMORY;
+		return NULL;
+	}
+
+	anon_creds = cli_credentials_init_anon(cs);
+	if (anon_creds == NULL) {
+		TALLOC_FREE(cs);
+		*perr = NT_STATUS_NO_MEMORY;
+		return NULL;
+	}
+
+	ZERO_STRUCTP(cs);
+	talloc_set_destructor(cs, cs_destructor);
+
+	nt_status = cli_full_connection_creds(&cs->cli, lp_netbios_name(), lp_netbios_name(),
+					&loopback_ss, 0,
+					"IPC$", "IPC",
+					anon_creds,
+					CLI_FULL_CONNECTION_IPC);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(2,("create_cs: Connect failed. Error was %s\n", nt_errstr(nt_status)));
+		cs->failed_connect = true;
+		cs->err = nt_status;
+		*perr = nt_status;
+		return NULL;
+	}
+
+	nt_status = cli_rpc_pipe_open_noauth(cs->cli,
+					&ndr_table_lsarpc,
+					&cs->lsapipe);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(2,("create_cs: open LSA pipe failed. Error was %s\n", nt_errstr(nt_status)));
+		cs->failed_connect = true;
+		cs->err = nt_status;
+		*perr = nt_status;
+		return NULL;
+	}
+
+	nt_status = rpccli_lsa_open_policy(cs->lsapipe, ctx, true,
+				SEC_FLAG_MAXIMUM_ALLOWED,
+				&cs->pol);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		DEBUG(2,("create_cs: rpccli_lsa_open_policy failed. Error was %s\n", nt_errstr(nt_status)));
+		cs->failed_connect = true;
+		cs->err = nt_status;
+		*perr = nt_status;
+		return NULL;
+	}
+
+	return cs;
+}
+
+/********************************************************
+ Do a lookup_sids call to localhost.
+ Check if the local machine is authoritative for this sid. We can't
+ check if this is our SID as that's stored in the root-read-only
+ secrets.tdb.
+ The local smbd will also ask winbindd for us, so we don't have to.
+********************************************************/
+
+NTSTATUS net_lookup_name_from_sid(struct net_context *c,
+				TALLOC_CTX *ctx,
+				struct dom_sid *psid,
+				const char **ppdomain,
+				const char **ppname)
+{
+	NTSTATUS nt_status;
+	struct con_struct *csp = NULL;
+	char **domains;
+	char **names;
+	enum lsa_SidType *types;
+
+	*ppdomain = NULL;
+	*ppname = NULL;
+
+	csp = create_cs(c, ctx, &nt_status);
+	if (csp == NULL) {
+		return nt_status;
+	}
+
+	nt_status = rpccli_lsa_lookup_sids(csp->lsapipe, ctx,
+						&csp->pol,
+						1, psid,
+						&domains,
+						&names,
+						&types);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return nt_status;
+	}
+
+	*ppdomain = domains[0];
+	*ppname = names[0];
+	/* Don't care about type here. */
+
+        /* Converted OK */
+        return NT_STATUS_OK;
+}
+
+/********************************************************
+ Do a lookup_names call to localhost.
+********************************************************/
+
+NTSTATUS net_lookup_sid_from_name(struct net_context *c, TALLOC_CTX *ctx,
+				  const char *full_name, struct dom_sid *pret_sid)
+{
+	NTSTATUS nt_status;
+	struct con_struct *csp = NULL;
+	struct dom_sid *sids = NULL;
+	enum lsa_SidType *types = NULL;
+
+	csp = create_cs(c, ctx, &nt_status);
+	if (csp == NULL) {
+		return nt_status;
+	}
+
+	nt_status = rpccli_lsa_lookup_names(csp->lsapipe, ctx,
+						&csp->pol,
+						1,
+						&full_name,
+					        NULL, 1,
+						&sids, &types);
+
+	if (!NT_STATUS_IS_OK(nt_status)) {
+		return nt_status;
+	}
+
+	*pret_sid = sids[0];
+
+        /* Converted OK */
+        return NT_STATUS_OK;
+}