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Diffstat (limited to 'source3/winbindd/winbindd_sid.c')
-rw-r--r--source3/winbindd/winbindd_sid.c560
1 files changed, 560 insertions, 0 deletions
diff --git a/source3/winbindd/winbindd_sid.c b/source3/winbindd/winbindd_sid.c
new file mode 100644
index 0000000000..48e84d35e5
--- /dev/null
+++ b/source3/winbindd/winbindd_sid.c
@@ -0,0 +1,560 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Winbind daemon - sid related functions
+
+ Copyright (C) Tim Potter 2000
+
+ 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 "winbindd.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_WINBIND
+
+/* Convert a string */
+
+static void lookupsid_recv(void *private_data, BOOL success,
+ const char *dom_name, const char *name,
+ enum lsa_SidType type);
+
+void winbindd_lookupsid(struct winbindd_cli_state *state)
+{
+ DOM_SID sid;
+
+ /* Ensure null termination */
+ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
+
+ DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
+ state->request.data.sid));
+
+ if (!string_to_sid(&sid, state->request.data.sid)) {
+ DEBUG(5, ("%s not a SID\n", state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ winbindd_lookupsid_async(state->mem_ctx, &sid, lookupsid_recv, state);
+}
+
+static void lookupsid_recv(void *private_data, BOOL success,
+ const char *dom_name, const char *name,
+ enum lsa_SidType type)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("lookupsid returned an error\n"));
+ request_error(state);
+ return;
+ }
+
+ fstrcpy(state->response.data.name.dom_name, dom_name);
+ fstrcpy(state->response.data.name.name, name);
+ state->response.data.name.type = type;
+ request_ok(state);
+}
+
+/**
+ * Look up the SID for a qualified name.
+ **/
+
+static void lookupname_recv(void *private_data, BOOL success,
+ const DOM_SID *sid, enum lsa_SidType type);
+
+void winbindd_lookupname(struct winbindd_cli_state *state)
+{
+ char *name_domain, *name_user;
+ char *p;
+
+ /* Ensure null termination */
+ state->request.data.name.dom_name[sizeof(state->request.data.name.dom_name)-1]='\0';
+
+ /* Ensure null termination */
+ state->request.data.name.name[sizeof(state->request.data.name.name)-1]='\0';
+
+ /* cope with the name being a fully qualified name */
+ p = strstr(state->request.data.name.name, lp_winbind_separator());
+ if (p) {
+ *p = 0;
+ name_domain = state->request.data.name.name;
+ name_user = p+1;
+ } else {
+ name_domain = state->request.data.name.dom_name;
+ name_user = state->request.data.name.name;
+ }
+
+ DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
+ name_domain, lp_winbind_separator(), name_user));
+
+ winbindd_lookupname_async(state->mem_ctx, name_domain, name_user,
+ lookupname_recv, WINBINDD_LOOKUPNAME,
+ state);
+}
+
+static void lookupname_recv(void *private_data, BOOL success,
+ const DOM_SID *sid, enum lsa_SidType type)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("lookupname returned an error\n"));
+ request_error(state);
+ return;
+ }
+
+ sid_to_string(state->response.data.sid.sid, sid);
+ state->response.data.sid.type = type;
+ request_ok(state);
+ return;
+}
+
+void winbindd_lookuprids(struct winbindd_cli_state *state)
+{
+ struct winbindd_domain *domain;
+ DOM_SID domain_sid;
+
+ /* Ensure null termination */
+ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
+
+ DEBUG(10, ("lookup_rids: %s\n", state->request.data.sid));
+
+ if (!string_to_sid(&domain_sid, state->request.data.sid)) {
+ DEBUG(5, ("Could not convert %s to SID\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ domain = find_lookup_domain_from_sid(&domain_sid);
+ if (domain == NULL) {
+ DEBUG(10, ("Could not find domain for name %s\n",
+ state->request.domain_name));
+ request_error(state);
+ return;
+ }
+
+ sendto_domain(state, domain);
+}
+
+static struct winbindd_child static_idmap_child;
+
+void init_idmap_child(void)
+{
+ setup_domain_child(NULL, &static_idmap_child, "idmap");
+}
+
+struct winbindd_child *idmap_child(void)
+{
+ return &static_idmap_child;
+}
+
+/* Convert a sid to a uid. We assume we only have one rid attached to the
+ sid. */
+
+static void sid2uid_recv(void *private_data, BOOL success, uid_t uid)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("Could not convert sid %s\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ state->response.data.uid = uid;
+ request_ok(state);
+}
+
+static void sid2uid_lookupsid_recv( void *private_data, BOOL success,
+ const char *domain_name,
+ const char *name,
+ enum lsa_SidType type)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+ DOM_SID sid;
+
+ if (!success) {
+ DEBUG(5, ("sid2uid_lookupsid_recv Could not convert get sid type for %s\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ if ( (type!=SID_NAME_USER) && (type!=SID_NAME_COMPUTER) ) {
+ DEBUG(5,("sid2uid_lookupsid_recv: Sid %s is not a user or a computer.\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ if (!string_to_sid(&sid, state->request.data.sid)) {
+ DEBUG(1, ("sid2uid_lookupsid_recv: Could not get convert sid %s from string\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ /* always use the async interface (may block) */
+ winbindd_sid2uid_async(state->mem_ctx, &sid, sid2uid_recv, state);
+}
+
+void winbindd_sid_to_uid(struct winbindd_cli_state *state)
+{
+ DOM_SID sid;
+
+ /* Ensure null termination */
+ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
+
+ DEBUG(3, ("[%5lu]: sid to uid %s\n", (unsigned long)state->pid,
+ state->request.data.sid));
+
+ if (!string_to_sid(&sid, state->request.data.sid)) {
+ DEBUG(1, ("Could not get convert sid %s from string\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ /* Validate the SID as a user. Hopefully this will hit cache.
+ Needed to prevent DoS by exhausting the uid allocation
+ range from random SIDs. */
+
+ winbindd_lookupsid_async( state->mem_ctx, &sid, sid2uid_lookupsid_recv, state );
+}
+
+/* Convert a sid to a gid. We assume we only have one rid attached to the
+ sid.*/
+
+static void sid2gid_recv(void *private_data, BOOL success, gid_t gid)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("Could not convert sid %s\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ state->response.data.gid = gid;
+ request_ok(state);
+}
+
+static void sid2gid_lookupsid_recv( void *private_data, BOOL success,
+ const char *domain_name,
+ const char *name,
+ enum lsa_SidType type)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+ DOM_SID sid;
+
+ if (!success) {
+ DEBUG(5, ("sid2gid_lookupsid_recv: Could not get sid type for %s\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ if ( (type!=SID_NAME_DOM_GRP) &&
+ (type!=SID_NAME_ALIAS) &&
+ (type!=SID_NAME_WKN_GRP) )
+ {
+ DEBUG(5,("sid2gid_lookupsid_recv: Sid %s is not a group.\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ if (!string_to_sid(&sid, state->request.data.sid)) {
+ DEBUG(1, ("sid2gid_lookupsid_recv: Could not get convert sid %s from string\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ /* always use the async interface (may block) */
+ winbindd_sid2gid_async(state->mem_ctx, &sid, sid2gid_recv, state);
+}
+
+void winbindd_sid_to_gid(struct winbindd_cli_state *state)
+{
+ DOM_SID sid;
+
+ /* Ensure null termination */
+ state->request.data.sid[sizeof(state->request.data.sid)-1]='\0';
+
+ DEBUG(3, ("[%5lu]: sid to gid %s\n", (unsigned long)state->pid,
+ state->request.data.sid));
+
+ if (!string_to_sid(&sid, state->request.data.sid)) {
+ DEBUG(1, ("Could not get convert sid %s from string\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ /* Validate the SID as a group. Hopefully this will hit cache.
+ Needed to prevent DoS by exhausting the uid allocation
+ range from random SIDs. */
+
+ winbindd_lookupsid_async( state->mem_ctx, &sid, sid2gid_lookupsid_recv, state );
+}
+
+static void sids2xids_recv(void *private_data, BOOL success, void *data, int len)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("Could not convert sids to xids\n"));
+ request_error(state);
+ return;
+ }
+
+ state->response.extra_data.data = data;
+ state->response.length = sizeof(state->response) + len;
+ request_ok(state);
+}
+
+void winbindd_sids_to_unixids(struct winbindd_cli_state *state)
+{
+ DEBUG(3, ("[%5lu]: sids to xids\n", (unsigned long)state->pid));
+
+ winbindd_sids2xids_async(state->mem_ctx,
+ state->request.extra_data.data,
+ state->request.extra_len,
+ sids2xids_recv, state);
+}
+
+static void set_mapping_recv(void *private_data, BOOL success)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("Could not set sid mapping\n"));
+ request_error(state);
+ return;
+ }
+
+ request_ok(state);
+}
+
+void winbindd_set_mapping(struct winbindd_cli_state *state)
+{
+ struct id_map map;
+ DOM_SID sid;
+
+ DEBUG(3, ("[%5lu]: set id map\n", (unsigned long)state->pid));
+
+ if ( ! state->privileged) {
+ DEBUG(0, ("Only root is allowed to set mappings!\n"));
+ request_error(state);
+ return;
+ }
+
+ if (!string_to_sid(&sid, state->request.data.dual_idmapset.sid)) {
+ DEBUG(1, ("Could not get convert sid %s from string\n",
+ state->request.data.sid));
+ request_error(state);
+ return;
+ }
+
+ map.sid = &sid;
+ map.xid.id = state->request.data.dual_idmapset.id;
+ map.xid.type = state->request.data.dual_idmapset.type;
+
+ winbindd_set_mapping_async(state->mem_ctx, &map,
+ set_mapping_recv, state);
+}
+
+static void set_hwm_recv(void *private_data, BOOL success)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("Could not set sid mapping\n"));
+ request_error(state);
+ return;
+ }
+
+ request_ok(state);
+}
+
+void winbindd_set_hwm(struct winbindd_cli_state *state)
+{
+ struct unixid xid;
+
+ DEBUG(3, ("[%5lu]: set hwm\n", (unsigned long)state->pid));
+
+ if ( ! state->privileged) {
+ DEBUG(0, ("Only root is allowed to set mappings!\n"));
+ request_error(state);
+ return;
+ }
+
+ xid.id = state->request.data.dual_idmapset.id;
+ xid.type = state->request.data.dual_idmapset.type;
+
+ winbindd_set_hwm_async(state->mem_ctx, &xid, set_hwm_recv, state);
+}
+
+/* Convert a uid to a sid */
+
+static void uid2sid_recv(void *private_data, BOOL success, const char *sid)
+{
+ struct winbindd_cli_state *state =
+ (struct winbindd_cli_state *)private_data;
+
+ if (success) {
+ DEBUG(10,("uid2sid: uid %lu has sid %s\n",
+ (unsigned long)(state->request.data.uid), sid));
+ fstrcpy(state->response.data.sid.sid, sid);
+ state->response.data.sid.type = SID_NAME_USER;
+ request_ok(state);
+ return;
+ }
+
+ request_error(state);
+ return;
+}
+
+void winbindd_uid_to_sid(struct winbindd_cli_state *state)
+{
+ DEBUG(3, ("[%5lu]: uid to sid %lu\n", (unsigned long)state->pid,
+ (unsigned long)state->request.data.uid));
+
+ /* always go via the async interface (may block) */
+ winbindd_uid2sid_async(state->mem_ctx, state->request.data.uid, uid2sid_recv, state);
+}
+
+/* Convert a gid to a sid */
+
+static void gid2sid_recv(void *private_data, BOOL success, const char *sid)
+{
+ struct winbindd_cli_state *state =
+ (struct winbindd_cli_state *)private_data;
+
+ if (success) {
+ DEBUG(10,("gid2sid: gid %lu has sid %s\n",
+ (unsigned long)(state->request.data.gid), sid));
+ fstrcpy(state->response.data.sid.sid, sid);
+ state->response.data.sid.type = SID_NAME_DOM_GRP;
+ request_ok(state);
+ return;
+ }
+
+ request_error(state);
+ return;
+}
+
+
+void winbindd_gid_to_sid(struct winbindd_cli_state *state)
+{
+ DEBUG(3, ("[%5lu]: gid to sid %lu\n", (unsigned long)state->pid,
+ (unsigned long)state->request.data.gid));
+
+ /* always use async calls (may block) */
+ winbindd_gid2sid_async(state->mem_ctx, state->request.data.gid, gid2sid_recv, state);
+}
+
+void winbindd_allocate_uid(struct winbindd_cli_state *state)
+{
+ if ( !state->privileged ) {
+ DEBUG(2, ("winbindd_allocate_uid: non-privileged access "
+ "denied!\n"));
+ request_error(state);
+ return;
+ }
+
+ sendto_child(state, idmap_child());
+}
+
+enum winbindd_result winbindd_dual_allocate_uid(struct winbindd_domain *domain,
+ struct winbindd_cli_state *state)
+{
+ struct unixid xid;
+
+ if (!NT_STATUS_IS_OK(idmap_allocate_uid(&xid))) {
+ return WINBINDD_ERROR;
+ }
+ state->response.data.uid = xid.id;
+ return WINBINDD_OK;
+}
+
+void winbindd_allocate_gid(struct winbindd_cli_state *state)
+{
+ if ( !state->privileged ) {
+ DEBUG(2, ("winbindd_allocate_gid: non-privileged access "
+ "denied!\n"));
+ request_error(state);
+ return;
+ }
+
+ sendto_child(state, idmap_child());
+}
+
+enum winbindd_result winbindd_dual_allocate_gid(struct winbindd_domain *domain,
+ struct winbindd_cli_state *state)
+{
+ struct unixid xid;
+
+ if (!NT_STATUS_IS_OK(idmap_allocate_gid(&xid))) {
+ return WINBINDD_ERROR;
+ }
+ state->response.data.gid = xid.id;
+ return WINBINDD_OK;
+}
+
+static void dump_maps_recv(void *private_data, BOOL success)
+{
+ struct winbindd_cli_state *state =
+ talloc_get_type_abort(private_data, struct winbindd_cli_state);
+
+ if (!success) {
+ DEBUG(5, ("Could not dump maps\n"));
+ request_error(state);
+ return;
+ }
+
+ request_ok(state);
+}
+
+void winbindd_dump_maps(struct winbindd_cli_state *state)
+{
+ if ( ! state->privileged) {
+ DEBUG(0, ("Only root is allowed to ask for an idmap dump!\n"));
+ request_error(state);
+ return;
+ }
+
+ DEBUG(3, ("[%5lu]: dump maps\n", (unsigned long)state->pid));
+
+ winbindd_dump_maps_async(state->mem_ctx,
+ state->request.extra_data.data,
+ state->request.extra_len,
+ dump_maps_recv, state);
+}
+