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Diffstat (limited to 'source3/sam/idmap_tdb.c')
-rw-r--r--source3/sam/idmap_tdb.c398
1 files changed, 309 insertions, 89 deletions
diff --git a/source3/sam/idmap_tdb.c b/source3/sam/idmap_tdb.c
index 31c12241bf..7f8dce1f1a 100644
--- a/source3/sam/idmap_tdb.c
+++ b/source3/sam/idmap_tdb.c
@@ -45,44 +45,126 @@ static struct idmap_state {
gid_t gid_low, gid_high; /* Range of gids to allocate */
} idmap_state;
-/* Allocate either a user or group id from the pool */
+/**********************************************************************
+ Return the TDB_CONTEXT* for winbindd_idmap. I **really** feel
+ dirty doing this, but not so dirty that I want to create another
+ tdb
+***********************************************************************/
+
+TDB_CONTEXT *idmap_tdb_handle( void )
+{
+ if ( idmap_tdb )
+ return idmap_tdb;
+
+ return NULL;
+}
+
+/**********************************************************************
+ allocate a new RID; We don't care if is a user or group
+**********************************************************************/
+
+static NTSTATUS db_allocate_rid(uint32 *rid, int rid_type)
+{
+ uint32 lowrid, highrid;
+ uint32 tmp_rid;
+
+ /* can't handle group rids right now. This is such a mess.... */
+
+ if ( rid_type == GROUP_RID_TYPE )
+ return NT_STATUS_UNSUCCESSFUL;
+
+ /* cannot fail since idmap is only called winbindd */
+
+ idmap_get_free_rid_range( &lowrid, &highrid );
+
+ tmp_rid = lowrid;
+
+ if ( !tdb_change_uint32_atomic(idmap_tdb, "RID_COUNTER", &tmp_rid, RID_MULTIPLIER) ) {
+ DEBUG(3,("db_allocate_rid: Failed to locate next rid record in idmap db\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ if ( tmp_rid > highrid ) {
+ DEBUG(0, ("db_allocate_rid: no RIDs available!\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ *rid = tmp_rid;
+
+ return NT_STATUS_OK;
+}
+
+/**********************************************************************
+ Allocate either a user or group id from the pool
+**********************************************************************/
+
static NTSTATUS db_allocate_id(unid_t *id, int id_type)
{
+ BOOL ret;
int hwm;
- if (!id) return NT_STATUS_INVALID_PARAMETER;
+ if (!id)
+ return NT_STATUS_INVALID_PARAMETER;
/* Get current high water mark */
switch (id_type & ID_TYPEMASK) {
case ID_USERID:
+
if ((hwm = tdb_fetch_int32(idmap_tdb, HWM_USER)) == -1) {
return NT_STATUS_INTERNAL_DB_ERROR;
}
+ /* check it is in the range */
if (hwm > idmap_state.uid_high) {
DEBUG(0, ("idmap Fatal Error: UID range full!! (max: %u)\n", idmap_state.uid_high));
return NT_STATUS_UNSUCCESSFUL;
}
- (*id).uid = hwm++;
+ /* fetch a new id and increment it */
+ ret = tdb_change_uint32_atomic(idmap_tdb, HWM_USER, &hwm, 1);
+ if (!ret) {
+ DEBUG(0, ("idmap_tdb: Fatal error while fetching a new id\n!"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ /* recheck it is in the range */
+ if (hwm > idmap_state.uid_high) {
+ DEBUG(0, ("idmap Fatal Error: UID range full!! (max: %u)\n", idmap_state.uid_high));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ (*id).uid = hwm;
+ DEBUG(10,("db_allocate_id: ID_USERID (*id).uid = %d\n", (unsigned int)hwm));
- /* Store new high water mark */
- tdb_store_int32(idmap_tdb, HWM_USER, hwm);
break;
case ID_GROUPID:
if ((hwm = tdb_fetch_int32(idmap_tdb, HWM_GROUP)) == -1) {
return NT_STATUS_INTERNAL_DB_ERROR;
}
+ /* check it is in the range */
if (hwm > idmap_state.gid_high) {
DEBUG(0, ("idmap Fatal Error: GID range full!! (max: %u)\n", idmap_state.gid_high));
return NT_STATUS_UNSUCCESSFUL;
}
- (*id).gid = hwm++;
+ /* fetch a new id and increment it */
+ ret = tdb_change_uint32_atomic(idmap_tdb, HWM_GROUP, &hwm, 1);
+
+ if (!ret) {
+ DEBUG(0, ("idmap_tdb: Fatal error while fetching a new id\n!"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ /* recheck it is in the range */
+ if (hwm > idmap_state.gid_high) {
+ DEBUG(0, ("idmap Fatal Error: GID range full!! (max: %u)\n", idmap_state.gid_high));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ (*id).gid = hwm;
+ DEBUG(10,("db_allocate_id: ID_GROUPID (*id).gid = %d\n", (unsigned int)hwm));
- /* Store new high water mark */
- tdb_store_int32(idmap_tdb, HWM_GROUP, hwm);
break;
default:
return NT_STATUS_INVALID_PARAMETER;
@@ -92,13 +174,14 @@ static NTSTATUS db_allocate_id(unid_t *id, int id_type)
}
/* Get a sid from an id */
-static NTSTATUS db_get_sid_from_id(DOM_SID *sid, unid_t id, int id_type)
+static NTSTATUS internal_get_sid_from_id(DOM_SID *sid, unid_t id, int id_type)
{
TDB_DATA key, data;
fstring keystr;
NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
- if (!sid) return NT_STATUS_INVALID_PARAMETER;
+ if (!sid)
+ return NT_STATUS_INVALID_PARAMETER;
switch (id_type & ID_TYPEMASK) {
case ID_USERID:
@@ -114,10 +197,13 @@ static NTSTATUS db_get_sid_from_id(DOM_SID *sid, unid_t id, int id_type)
key.dptr = keystr;
key.dsize = strlen(keystr) + 1;
+ DEBUG(10,("internal_get_sid_from_id: fetching record %s\n", keystr ));
+
data = tdb_fetch(idmap_tdb, key);
if (data.dptr) {
if (string_to_sid(sid, data.dptr)) {
+ DEBUG(10,("internal_get_sid_from_id: fetching record %s -> %s\n", keystr, data.dptr ));
ret = NT_STATUS_OK;
}
SAFE_FREE(data.dptr);
@@ -126,14 +212,15 @@ static NTSTATUS db_get_sid_from_id(DOM_SID *sid, unid_t id, int id_type)
return ret;
}
-/* Get an id from a sid */
-static NTSTATUS db_get_id_from_sid(unid_t *id, int *id_type, const DOM_SID *sid)
+/* Error codes for get_id_from_sid */
+enum getidfromsiderr { GET_ID_FROM_SID_OK = 0, GET_ID_FROM_SID_NOTFOUND, GET_ID_FROM_SID_WRONG_TYPE, GET_ID_FROM_SID_ERR };
+
+static enum getidfromsiderr internal_get_id_from_sid(unid_t *id, int *id_type, const DOM_SID *sid)
{
- TDB_DATA data, key;
+ enum getidfromsiderr ret = GET_ID_FROM_SID_ERR;
fstring keystr;
- NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
-
- if (!sid || !id || !id_type) return NT_STATUS_INVALID_PARAMETER;
+ TDB_DATA key, data;
+ int type = *id_type & ID_TYPEMASK;
/* Check if sid is present in database */
sid_to_string(keystr, sid);
@@ -141,71 +228,186 @@ static NTSTATUS db_get_id_from_sid(unid_t *id, int *id_type, const DOM_SID *sid)
key.dptr = keystr;
key.dsize = strlen(keystr) + 1;
+ DEBUG(10,("internal_get_id_from_sid: fetching record %s of type 0x%x\n", keystr, type ));
+
data = tdb_fetch(idmap_tdb, key);
+ if (!data.dptr) {
+ DEBUG(10,("internal_get_id_from_sid: record %s not found\n", keystr ));
+ return GET_ID_FROM_SID_NOTFOUND;
+ } else {
+ DEBUG(10,("internal_get_id_from_sid: record %s -> %s\n", keystr, data.dptr ));
+ }
- if (data.dptr) {
- int type = *id_type & ID_TYPEMASK;
+ if (type == ID_EMPTY || type == ID_USERID) {
fstring scanstr;
+ /* Parse and return existing uid */
+ fstrcpy(scanstr, "UID %d");
+
+ if (sscanf(data.dptr, scanstr, &((*id).uid)) == 1) {
+ /* uid ok? */
+ if (type == ID_EMPTY) {
+ *id_type = ID_USERID;
+ }
+ DEBUG(10,("internal_get_id_from_sid: %s fetching record %s -> %s \n",
+ (type == ID_EMPTY) ? "ID_EMPTY" : "ID_USERID",
+ keystr, data.dptr ));
+ ret = GET_ID_FROM_SID_OK;
+ } else {
+ ret = GET_ID_FROM_SID_WRONG_TYPE;
+ }
+ }
+
+ if ((ret != GET_ID_FROM_SID_OK) && (type == ID_EMPTY || type == ID_GROUPID)) {
+ fstring scanstr;
+ /* Parse and return existing gid */
+ fstrcpy(scanstr, "GID %d");
+
+ if (sscanf(data.dptr, scanstr, &((*id).gid)) == 1) {
+ /* gid ok? */
+ if (type == ID_EMPTY) {
+ *id_type = ID_GROUPID;
+ }
+ DEBUG(10,("internal_get_id_from_sid: %s fetching record %s -> %s \n",
+ (type == ID_EMPTY) ? "ID_EMPTY" : "ID_GROUPID",
+ keystr, data.dptr ));
+ ret = GET_ID_FROM_SID_OK;
+ } else {
+ ret = GET_ID_FROM_SID_WRONG_TYPE;
+ }
+ }
+
+ SAFE_FREE(data.dptr);
- if (type == ID_EMPTY || type == ID_USERID) {
- /* Parse and return existing uid */
- fstrcpy(scanstr, "UID %d");
+ return ret;
+}
- if (sscanf(data.dptr, scanstr, &((*id).uid)) == 1) {
- /* uid ok? */
- if (type == ID_EMPTY) {
- *id_type = ID_USERID;
- }
- ret = NT_STATUS_OK;
- goto idok;
- }
+/* Get a sid from an id */
+static NTSTATUS db_get_sid_from_id(DOM_SID *sid, unid_t id, int id_type_in)
+{
+ NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+ enum getidfromsiderr iderr;
+ int id_type = id_type_in & ID_TYPEMASK;
+ unid_t id_tmp = id;
+ int id_type_tmp = id_type;
+
+ DEBUG(10,("db_get_sid_from_id: id_type_in = 0x%x\n", id_type_in));
+
+ ret = internal_get_sid_from_id(sid, id, id_type);
+ if (!NT_STATUS_IS_OK(ret)) {
+ return ret;
+ }
+
+ iderr = internal_get_id_from_sid(&id_tmp, &id_type_tmp, sid);
+ if (iderr != GET_ID_FROM_SID_OK) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ if (id_type_tmp != id_type) {
+ return NT_STATUS_UNSUCCESSFUL;
+ } else if (id_type == ID_USERID) {
+ if (id_tmp.uid != id.uid) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ } else if (id_type == ID_GROUPID) {
+ if (id_tmp.gid != id.gid) {
+ return NT_STATUS_UNSUCCESSFUL;
}
+ } else {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ return ret;
+}
+/* Get an id from a sid */
+static NTSTATUS db_get_id_from_sid(unid_t *id, int *id_type, const DOM_SID *sid)
+{
+ NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+ enum getidfromsiderr iderr;
- if (type == ID_EMPTY || type == ID_GROUPID) {
- /* Parse and return existing gid */
- fstrcpy(scanstr, "GID %d");
+ DEBUG(10,("db_get_id_from_sid\n"));
- if (sscanf(data.dptr, scanstr, &((*id).gid)) == 1) {
- /* gid ok? */
- if (type == ID_EMPTY) {
- *id_type = ID_GROUPID;
- }
- ret = NT_STATUS_OK;
+ if (!sid || !id || !id_type)
+ return NT_STATUS_INVALID_PARAMETER;
+
+ iderr = internal_get_id_from_sid(id, id_type, sid);
+ if (iderr == GET_ID_FROM_SID_OK) {
+ DOM_SID sid_tmp;
+ ret = internal_get_sid_from_id(&sid_tmp, *id, *id_type);
+ if (NT_STATUS_IS_OK(ret)) {
+ if (!sid_equal(&sid_tmp, sid)) {
+ return NT_STATUS_UNSUCCESSFUL;
}
}
-idok:
- SAFE_FREE(data.dptr);
+ } else if (iderr == GET_ID_FROM_SID_WRONG_TYPE) {
+ /* We found a record but not the type we wanted.
+ * This is an error, not an opportunity to overwrite...
+ * JRA.
+ */
+ return NT_STATUS_UNSUCCESSFUL;
+ }
- } else if (!(*id_type & ID_NOMAP) &&
+ if (!(*id_type & ID_QUERY_ONLY) && (iderr != GET_ID_FROM_SID_OK) &&
(((*id_type & ID_TYPEMASK) == ID_USERID)
|| (*id_type & ID_TYPEMASK) == ID_GROUPID)) {
+ TDB_DATA sid_data;
+ TDB_DATA ugid_data;
+ fstring sid_string;
+
+ sid_to_string(sid_string, sid);
+
+ sid_data.dptr = sid_string;
+ sid_data.dsize = strlen(sid_string)+1;
+
+ /* Lock the record for this SID. */
+ if (tdb_chainlock(idmap_tdb, sid_data) != 0) {
+ DEBUG(10,("db_get_id_from_sid: failed to lock record %s. Error %s\n",
+ sid_string, tdb_errorstr(idmap_tdb) ));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
- /* Allocate a new id for this sid */
- ret = db_allocate_id(id, *id_type);
- if (NT_STATUS_IS_OK(ret)) {
- fstring keystr2;
+ do {
+ fstring ugid_str;
+ /* Allocate a new id for this sid */
+ ret = db_allocate_id(id, *id_type);
+ if (!NT_STATUS_IS_OK(ret))
+ break;
+
+ /* Store the UID side */
/* Store new id */
if (*id_type & ID_USERID) {
- slprintf(keystr2, sizeof(keystr2), "UID %d", (*id).uid);
+ slprintf(ugid_str, sizeof(ugid_str), "UID %d", (*id).uid);
} else {
- slprintf(keystr2, sizeof(keystr2), "GID %d", (*id).gid);
+ slprintf(ugid_str, sizeof(ugid_str), "GID %d", (*id).gid);
}
+
+ ugid_data.dptr = ugid_str;
+ ugid_data.dsize = strlen(ugid_str) + 1;
- data.dptr = keystr2;
- data.dsize = strlen(keystr2) + 1;
+ DEBUG(10,("db_get_id_from_sid: storing %s -> %s\n",
+ ugid_data.dptr, sid_data.dptr ));
- if (tdb_store(idmap_tdb, key, data, TDB_REPLACE) == -1) {
- /* TODO: print tdb error !! */
- return NT_STATUS_UNSUCCESSFUL;
+ if (tdb_store(idmap_tdb, ugid_data, sid_data, TDB_INSERT) != -1) {
+ ret = NT_STATUS_OK;
+ break;
}
- if (tdb_store(idmap_tdb, data, key, TDB_REPLACE) == -1) {
+ if (tdb_error(idmap_tdb) != TDB_ERR_EXISTS)
+ DEBUG(10,("db_get_id_from_sid: error %s\n", tdb_errorstr(idmap_tdb) ));
+ ret = NT_STATUS_UNSUCCESSFUL;
+ } while (tdb_error(idmap_tdb) == TDB_ERR_EXISTS);
+
+ if (NT_STATUS_IS_OK(ret)) {
+
+ DEBUG(10,("db_get_id_from_sid: storing %s -> %s\n",
+ sid_data.dptr, ugid_data.dptr ));
+
+ if (tdb_store(idmap_tdb, sid_data, ugid_data, TDB_REPLACE) == -1) {
+ DEBUG(10,("db_get_id_from_sid: error %s\n", tdb_errorstr(idmap_tdb) ));
/* TODO: print tdb error !! */
+ tdb_chainunlock(idmap_tdb, sid_data);
return NT_STATUS_UNSUCCESSFUL;
}
-
- ret = NT_STATUS_OK;
}
+
+ tdb_chainunlock(idmap_tdb, sid_data);
}
return ret;
@@ -217,7 +419,10 @@ static NTSTATUS db_set_mapping(const DOM_SID *sid, unid_t id, int id_type)
fstring ksidstr;
fstring kidstr;
- if (!sid) return NT_STATUS_INVALID_PARAMETER;
+ DEBUG(10,("db_set_mapping: id_type = 0x%x\n", id_type));
+
+ if (!sid)
+ return NT_STATUS_INVALID_PARAMETER;
sid_to_string(ksidstr, sid);
@@ -238,32 +443,51 @@ static NTSTATUS db_set_mapping(const DOM_SID *sid, unid_t id, int id_type)
/* *DELETE* prevoius mappings if any.
* This is done both SID and [U|G]ID passed in */
+ /* Lock the record for this SID. */
+ if (tdb_chainlock(idmap_tdb, ksid) != 0) {
+ DEBUG(10,("db_set_mapping: failed to lock record %s. Error %s\n",
+ ksidstr, tdb_errorstr(idmap_tdb) ));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ DEBUG(10,("db_set_mapping: fetching %s\n", ksid.dptr));
+
data = tdb_fetch(idmap_tdb, ksid);
if (data.dptr) {
+ DEBUG(10,("db_set_mapping: deleting %s and %s\n", data.dptr, ksid.dptr ));
tdb_delete(idmap_tdb, data);
tdb_delete(idmap_tdb, ksid);
+ SAFE_FREE(data.dptr);
}
data = tdb_fetch(idmap_tdb, kid);
if (data.dptr) {
+ DEBUG(10,("db_set_mapping: deleting %s and %s\n", data.dptr, kid.dptr ));
tdb_delete(idmap_tdb, data);
tdb_delete(idmap_tdb, kid);
+ SAFE_FREE(data.dptr);
}
if (tdb_store(idmap_tdb, ksid, kid, TDB_INSERT) == -1) {
DEBUG(0, ("idb_set_mapping: tdb_store 1 error: %s\n", tdb_errorstr(idmap_tdb)));
+ tdb_chainunlock(idmap_tdb, ksid);
return NT_STATUS_UNSUCCESSFUL;
}
if (tdb_store(idmap_tdb, kid, ksid, TDB_INSERT) == -1) {
DEBUG(0, ("idb_set_mapping: tdb_store 2 error: %s\n", tdb_errorstr(idmap_tdb)));
+ tdb_chainunlock(idmap_tdb, ksid);
return NT_STATUS_UNSUCCESSFUL;
}
+
+ tdb_chainunlock(idmap_tdb, ksid);
+ DEBUG(10,("db_set_mapping: stored %s -> %s and %s -> %s\n", ksid.dptr, kid.dptr, kid.dptr, ksid.dptr ));
return NT_STATUS_OK;
}
/*****************************************************************************
Initialise idmap database.
*****************************************************************************/
-static NTSTATUS db_idmap_init(void)
+
+static NTSTATUS db_idmap_init( char *params )
{
SMB_STRUCT_STAT stbuf;
char *tdbfile = NULL;
@@ -271,30 +495,22 @@ static NTSTATUS db_idmap_init(void)
BOOL tdb_is_new = False;
/* use the old database if present */
- if (!file_exist(lock_path("idmap.tdb"), &stbuf)) {
- if (file_exist(lock_path("winbindd_idmap.tdb"), &stbuf)) {
- DEBUG(0, ("idmap_init: using winbindd_idmap.tdb file!\n"));
- tdbfile = strdup(lock_path("winbindd_idmap.tdb"));
- if (!tdbfile) {
- DEBUG(0, ("idmap_init: out of memory!\n"));
- return NT_STATUS_NO_MEMORY;
- }
- } else {
- tdb_is_new = True;
- }
- }
+ tdbfile = strdup(lock_path("winbindd_idmap.tdb"));
if (!tdbfile) {
- tdbfile = strdup(lock_path("idmap.tdb"));
- if (!tdbfile) {
- DEBUG(0, ("idmap_init: out of memory!\n"));
- return NT_STATUS_NO_MEMORY;
- }
+ DEBUG(0, ("idmap_init: out of memory!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!file_exist(tdbfile, &stbuf)) {
+ tdb_is_new = True;
}
- /* Open tdb cache */
+ DEBUG(10,("db_idmap_init: Opening tdbfile %s\n", tdbfile ));
+
+ /* Open idmap repository */
if (!(idmap_tdb = tdb_open_log(tdbfile, 0,
TDB_DEFAULT, O_RDWR | O_CREAT,
- 0600))) {
+ 0644))) {
DEBUG(0, ("idmap_init: Unable to open idmap database\n"));
SAFE_FREE(tdbfile);
return NT_STATUS_UNSUCCESSFUL;
@@ -302,16 +518,20 @@ static NTSTATUS db_idmap_init(void)
SAFE_FREE(tdbfile);
- /* check against earlier versions */
if (tdb_is_new) {
- /* TODO: delete the file if this fail */
+ /* the file didn't existed before opening it, let's
+ * store idmap version as nobody else yet opened and
+ * stored it. I do not like this method but didn't
+ * found a way to understand if an opened tdb have
+ * been just created or not --- SSS */
tdb_store_int32(idmap_tdb, "IDMAP_VERSION", IDMAP_VERSION);
- } else {
- version = tdb_fetch_int32(idmap_tdb, "IDMAP_VERSION");
- if (version != IDMAP_VERSION) {
- DEBUG(0, ("idmap_init: Unable to open idmap database, it's in an old format!\n"));
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
+ }
+
+ /* check against earlier versions */
+ version = tdb_fetch_int32(idmap_tdb, "IDMAP_VERSION");
+ if (version != IDMAP_VERSION) {
+ DEBUG(0, ("idmap_init: Unable to open idmap database, it's in an old format!\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
}
/* Create high water marks for group and user id */
@@ -424,9 +644,11 @@ static void db_idmap_status(void)
/* Display complete mapping of users and groups to rids */
}
-struct idmap_methods db_methods = {
+static struct idmap_methods db_methods = {
db_idmap_init,
+ db_allocate_rid,
+ db_allocate_id,
db_get_sid_from_id,
db_get_id_from_sid,
db_set_mapping,
@@ -435,9 +657,7 @@ struct idmap_methods db_methods = {
};
-NTSTATUS idmap_reg_tdb(struct idmap_methods **meth)
+NTSTATUS idmap_tdb_init(void)
{
- *meth = &db_methods;
-
- return NT_STATUS_OK;
+ return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb", &db_methods);
}
generated by cgit (git 2.34.1) at 2024-11-24 15:05:29 +0000