#include "winbindd.h"
#include "idmap.h"
#include "idmap_rw.h"
+#include "idmap_tdb_common.h"
#include "dbwrap/dbwrap.h"
#include "dbwrap/dbwrap_open.h"
#include "../libcli/security/security.h"
#define IDMAP_VERSION 2
-struct idmap_tdb_context {
- struct db_context *db;
- struct idmap_rw_ops *rw_ops;
-};
-
/* High water mark keys */
#define HWM_GROUP "GROUP HWM"
#define HWM_USER "USER HWM"
uint32_t low_gid;
bool update_uid = false;
bool update_gid = false;
- struct idmap_tdb_context *ctx;
+ struct idmap_tdb_common_context *ctx;
NTSTATUS status;
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+ ctx = talloc_get_type(dom->private_data,
+ struct idmap_tdb_common_context);
status = dbwrap_fetch_uint32(ctx->db, HWM_USER, &low_uid);
if (!NT_STATUS_IS_OK(status) || low_uid < dom->low_id) {
struct db_context *db = NULL;
int32_t version;
bool config_error = false;
- struct idmap_tdb_context *ctx;
+ struct idmap_tdb_common_context *ctx;
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+ ctx = talloc_get_type(dom->private_data,
+ struct idmap_tdb_common_context);
if (ctx->db) {
/* it is already open */
return ret;
}
-/**********************************************************************
- IDMAP ALLOC TDB BACKEND
-**********************************************************************/
-
-/**********************************
- Allocate a new id.
-**********************************/
-
-struct idmap_tdb_allocate_id_context {
- const char *hwmkey;
- const char *hwmtype;
- uint32_t high_hwm;
- uint32_t hwm;
-};
-
-static NTSTATUS idmap_tdb_allocate_id_action(struct db_context *db,
- void *private_data)
-{
- NTSTATUS ret;
- struct idmap_tdb_allocate_id_context *state;
- uint32_t hwm;
-
- state = (struct idmap_tdb_allocate_id_context *)private_data;
-
- ret = dbwrap_fetch_uint32(db, state->hwmkey, &hwm);
- if (!NT_STATUS_IS_OK(ret)) {
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
- }
-
- /* check it is in the range */
- if (hwm > state->high_hwm) {
- DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
- state->hwmtype, (unsigned long)state->high_hwm));
- ret = NT_STATUS_UNSUCCESSFUL;
- goto done;
- }
-
- /* fetch a new id and increment it */
- ret = dbwrap_trans_change_uint32_atomic(db, state->hwmkey, &hwm, 1);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(0, ("Fatal error while fetching a new %s value: %s\n!",
- state->hwmtype, nt_errstr(ret)));
- goto done;
- }
-
- /* recheck it is in the range */
- if (hwm > state->high_hwm) {
- DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
- state->hwmtype, (unsigned long)state->high_hwm));
- ret = NT_STATUS_UNSUCCESSFUL;
- goto done;
- }
-
- ret = NT_STATUS_OK;
- state->hwm = hwm;
-
-done:
- return ret;
-}
-
-static NTSTATUS idmap_tdb_allocate_id(struct idmap_domain *dom,
- struct unixid *xid)
-{
- const char *hwmkey;
- const char *hwmtype;
- uint32_t high_hwm;
- uint32_t hwm = 0;
- NTSTATUS status;
- struct idmap_tdb_allocate_id_context state;
- struct idmap_tdb_context *ctx;
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- /* Get current high water mark */
- switch (xid->type) {
-
- case ID_TYPE_UID:
- hwmkey = HWM_USER;
- hwmtype = "UID";
- break;
-
- case ID_TYPE_GID:
- hwmkey = HWM_GROUP;
- hwmtype = "GID";
- break;
-
- default:
- DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- high_hwm = dom->high_id;
-
- state.hwm = hwm;
- state.high_hwm = high_hwm;
- state.hwmtype = hwmtype;
- state.hwmkey = hwmkey;
-
- status = dbwrap_trans_do(ctx->db, idmap_tdb_allocate_id_action,
- &state);
-
- if (NT_STATUS_IS_OK(status)) {
- xid->id = state.hwm;
- DEBUG(10,("New %s = %d\n", hwmtype, state.hwm));
- } else {
- DEBUG(1, ("Error allocating a new %s\n", hwmtype));
- }
-
- return status;
-}
-
-/**
- * Allocate a new unix-ID.
- * For now this is for the default idmap domain only.
- * Should be extended later on.
- */
-static NTSTATUS idmap_tdb_get_new_id(struct idmap_domain *dom,
- struct unixid *id)
-{
- NTSTATUS ret;
-
- if (!strequal(dom->name, "*")) {
- DEBUG(3, ("idmap_tdb_get_new_id: "
- "Refusing allocation of a new unixid for domain'%s'. "
- "Currently only supported for the default "
- "domain \"*\".\n",
- dom->name));
- return NT_STATUS_NOT_IMPLEMENTED;
- }
-
- ret = idmap_tdb_allocate_id(dom, id);
-
- return ret;
-}
-
/**********************************************************************
IDMAP MAPPING TDB BACKEND
**********************************************************************/
Initialise idmap database.
*****************************/
-static NTSTATUS idmap_tdb_set_mapping(struct idmap_domain *dom,
- const struct id_map *map);
-
static NTSTATUS idmap_tdb_db_init(struct idmap_domain *dom)
{
NTSTATUS ret;
- struct idmap_tdb_context *ctx;
+ struct idmap_tdb_common_context *ctx;
DEBUG(10, ("idmap_tdb_db_init called for domain '%s'\n", dom->name));
- ctx = talloc_zero(dom, struct idmap_tdb_context);
+ ctx = talloc_zero(dom, struct idmap_tdb_common_context);
if ( ! ctx) {
DEBUG(0, ("Out of memory!\n"));
return NT_STATUS_NO_MEMORY;
goto failed;
}
- ctx->rw_ops->get_new_id = idmap_tdb_get_new_id;
- ctx->rw_ops->set_mapping = idmap_tdb_set_mapping;
+ ctx->max_id = dom->high_id;
+ ctx->hwmkey_uid = HWM_USER;
+ ctx->hwmkey_gid = HWM_GROUP;
+
+ ctx->rw_ops->get_new_id = idmap_tdb_common_get_new_id;
+ ctx->rw_ops->set_mapping = idmap_tdb_common_set_mapping;
dom->private_data = ctx;
return ret;
}
-
-/**
- * store a mapping in the database
- */
-
-struct idmap_tdb_set_mapping_context {
- const char *ksidstr;
- const char *kidstr;
-};
-
-static NTSTATUS idmap_tdb_set_mapping_action(struct db_context *db,
- void *private_data)
-{
- NTSTATUS ret;
- struct idmap_tdb_set_mapping_context *state;
-
- state = (struct idmap_tdb_set_mapping_context *)private_data;
-
- DEBUG(10, ("Storing %s <-> %s map\n", state->ksidstr, state->kidstr));
-
- ret = dbwrap_store_bystring(db, state->ksidstr,
- string_term_tdb_data(state->kidstr),
- TDB_REPLACE);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(0, ("Error storing SID -> ID (%s -> %s): %s\n",
- state->ksidstr, state->kidstr, nt_errstr(ret)));
- goto done;
- }
-
- ret = dbwrap_store_bystring(db, state->kidstr,
- string_term_tdb_data(state->ksidstr),
- TDB_REPLACE);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(0, ("Error storing ID -> SID (%s -> %s): %s\n",
- state->kidstr, state->ksidstr, nt_errstr(ret)));
- goto done;
- }
-
- DEBUG(10,("Stored %s <-> %s\n", state->ksidstr, state->kidstr));
- ret = NT_STATUS_OK;
-
-done:
- return ret;
-}
-
-static NTSTATUS idmap_tdb_set_mapping(struct idmap_domain *dom,
- const struct id_map *map)
-{
- struct idmap_tdb_context *ctx;
- NTSTATUS ret;
- char *ksidstr, *kidstr;
- struct idmap_tdb_set_mapping_context state;
-
- if (!map || !map->sid) {
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- ksidstr = kidstr = NULL;
-
- /* TODO: should we filter a set_mapping using low/high filters ? */
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- switch (map->xid.type) {
-
- case ID_TYPE_UID:
- kidstr = talloc_asprintf(ctx, "UID %lu",
- (unsigned long)map->xid.id);
- break;
-
- case ID_TYPE_GID:
- kidstr = talloc_asprintf(ctx, "GID %lu",
- (unsigned long)map->xid.id);
- break;
-
- default:
- DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- if (kidstr == NULL) {
- DEBUG(0, ("ERROR: Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- ksidstr = sid_string_talloc(ctx, map->sid);
- if (ksidstr == NULL) {
- DEBUG(0, ("Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- state.ksidstr = ksidstr;
- state.kidstr = kidstr;
-
- ret = dbwrap_trans_do(ctx->db, idmap_tdb_set_mapping_action, &state);
-
-done:
- talloc_free(ksidstr);
- talloc_free(kidstr);
- return ret;
-}
-
-/**
- * Create a new mapping for an unmapped SID, also allocating a new ID.
- * This should be run inside a transaction.
- *
- * TODO:
- * Properly integrate this with multi domain idmap config:
- * Currently, the allocator is default-config only.
- */
-static NTSTATUS idmap_tdb_new_mapping(struct idmap_domain *dom, struct id_map *map)
-{
- NTSTATUS ret;
- struct idmap_tdb_context *ctx;
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- ret = idmap_rw_new_mapping(dom, ctx->rw_ops, map);
-
- return ret;
-}
-
-
-/**********************************
- Single id to sid lookup function.
-**********************************/
-
-static NTSTATUS idmap_tdb_id_to_sid(struct idmap_domain *dom, struct id_map *map)
-{
- NTSTATUS ret;
- TDB_DATA data;
- char *keystr;
- struct idmap_tdb_context *ctx;
-
- if (!dom || !map) {
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- /* apply filters before checking */
- if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
- DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
- map->xid.id, dom->low_id, dom->high_id));
- return NT_STATUS_NONE_MAPPED;
- }
-
- switch (map->xid.type) {
-
- case ID_TYPE_UID:
- keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
- break;
-
- case ID_TYPE_GID:
- keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
- break;
-
- default:
- DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
- return NT_STATUS_INVALID_PARAMETER;
- }
-
- /* final SAFE_FREE safe */
- data.dptr = NULL;
-
- if (keystr == NULL) {
- DEBUG(0, ("Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- DEBUG(10,("Fetching record %s\n", keystr));
-
- /* Check if the mapping exists */
- ret = dbwrap_fetch_bystring(ctx->db, NULL, keystr, &data);
-
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(10,("Record %s not found\n", keystr));
- ret = NT_STATUS_NONE_MAPPED;
- goto done;
- }
-
- if (!string_to_sid(map->sid, (const char *)data.dptr)) {
- DEBUG(10,("INVALID SID (%s) in record %s\n",
- (const char *)data.dptr, keystr));
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
- }
-
- DEBUG(10,("Found record %s -> %s\n", keystr, (const char *)data.dptr));
- ret = NT_STATUS_OK;
-
-done:
- talloc_free(data.dptr);
- talloc_free(keystr);
- return ret;
-}
-
-/**********************************
- Single sid to id lookup function.
-**********************************/
-
-static NTSTATUS idmap_tdb_sid_to_id(struct idmap_domain *dom, struct id_map *map)
-{
- NTSTATUS ret;
- TDB_DATA data;
- char *keystr;
- unsigned long rec_id = 0;
- struct idmap_tdb_context *ctx;
- TALLOC_CTX *tmp_ctx = talloc_stackframe();
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- keystr = sid_string_talloc(tmp_ctx, map->sid);
- if (keystr == NULL) {
- DEBUG(0, ("Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- DEBUG(10,("Fetching record %s\n", keystr));
-
- /* Check if sid is present in database */
- ret = dbwrap_fetch_bystring(ctx->db, tmp_ctx, keystr, &data);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(10,("Record %s not found\n", keystr));
- ret = NT_STATUS_NONE_MAPPED;
- goto done;
- }
-
- /* What type of record is this ? */
- if (sscanf((const char *)data.dptr, "UID %lu", &rec_id) == 1) { /* Try a UID record. */
- map->xid.id = rec_id;
- map->xid.type = ID_TYPE_UID;
- DEBUG(10,("Found uid record %s -> %s \n", keystr, (const char *)data.dptr ));
- ret = NT_STATUS_OK;
-
- } else if (sscanf((const char *)data.dptr, "GID %lu", &rec_id) == 1) { /* Try a GID record. */
- map->xid.id = rec_id;
- map->xid.type = ID_TYPE_GID;
- DEBUG(10,("Found gid record %s -> %s \n", keystr, (const char *)data.dptr ));
- ret = NT_STATUS_OK;
-
- } else { /* Unknown record type ! */
- DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr));
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
- }
-
- /* apply filters before returning result */
- if (!idmap_unix_id_is_in_range(map->xid.id, dom)) {
- DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
- map->xid.id, dom->low_id, dom->high_id));
- ret = NT_STATUS_NONE_MAPPED;
- }
-
-done:
- talloc_free(tmp_ctx);
- return ret;
-}
-
-/**********************************
- lookup a set of unix ids.
-**********************************/
-
-static NTSTATUS idmap_tdb_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
-{
- NTSTATUS ret;
- int i;
-
- /* initialize the status to avoid suprise */
- for (i = 0; ids[i]; i++) {
- ids[i]->status = ID_UNKNOWN;
- }
-
- for (i = 0; ids[i]; i++) {
- ret = idmap_tdb_id_to_sid(dom, ids[i]);
- if ( ! NT_STATUS_IS_OK(ret)) {
-
- /* if it is just a failed mapping continue */
- if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
-
- /* make sure it is marked as unmapped */
- ids[i]->status = ID_UNMAPPED;
- continue;
- }
-
- /* some fatal error occurred, return immediately */
- goto done;
- }
-
- /* all ok, id is mapped */
- ids[i]->status = ID_MAPPED;
- }
-
- ret = NT_STATUS_OK;
-
-done:
- return ret;
-}
-
-/**********************************
- lookup a set of sids.
-**********************************/
-
-struct idmap_tdb_sids_to_unixids_context {
- struct idmap_domain *dom;
- struct id_map **ids;
- bool allocate_unmapped;
-};
-
-static NTSTATUS idmap_tdb_sids_to_unixids_action(struct db_context *db,
- void *private_data)
-{
- struct idmap_tdb_sids_to_unixids_context *state;
- int i;
- NTSTATUS ret = NT_STATUS_OK;
-
- state = (struct idmap_tdb_sids_to_unixids_context *)private_data;
-
- DEBUG(10, ("idmap_tdb_sids_to_unixids_action: "
- " domain: [%s], allocate: %s\n",
- state->dom->name,
- state->allocate_unmapped ? "yes" : "no"));
-
- for (i = 0; state->ids[i]; i++) {
- if ((state->ids[i]->status == ID_UNKNOWN) ||
- /* retry if we could not map in previous run: */
- (state->ids[i]->status == ID_UNMAPPED))
- {
- NTSTATUS ret2;
-
- ret2 = idmap_tdb_sid_to_id(state->dom, state->ids[i]);
- if (!NT_STATUS_IS_OK(ret2)) {
-
- /* if it is just a failed mapping, continue */
- if (NT_STATUS_EQUAL(ret2, NT_STATUS_NONE_MAPPED)) {
-
- /* make sure it is marked as unmapped */
- state->ids[i]->status = ID_UNMAPPED;
- ret = STATUS_SOME_UNMAPPED;
- } else {
- /* some fatal error occurred, return immediately */
- ret = ret2;
- goto done;
- }
- } else {
- /* all ok, id is mapped */
- state->ids[i]->status = ID_MAPPED;
- }
- }
-
- if ((state->ids[i]->status == ID_UNMAPPED) &&
- state->allocate_unmapped)
- {
- ret = idmap_tdb_new_mapping(state->dom, state->ids[i]);
- if (!NT_STATUS_IS_OK(ret)) {
- goto done;
- }
- }
- }
-
-done:
- return ret;
-}
-
-static NTSTATUS idmap_tdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
-{
- struct idmap_tdb_context *ctx;
- NTSTATUS ret;
- int i;
- struct idmap_tdb_sids_to_unixids_context state;
-
- /* initialize the status to avoid suprise */
- for (i = 0; ids[i]; i++) {
- ids[i]->status = ID_UNKNOWN;
- }
-
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
-
- state.dom = dom;
- state.ids = ids;
- state.allocate_unmapped = false;
-
- ret = idmap_tdb_sids_to_unixids_action(ctx->db, &state);
-
- if (NT_STATUS_EQUAL(ret, STATUS_SOME_UNMAPPED) && !dom->read_only) {
- state.allocate_unmapped = true;
- ret = dbwrap_trans_do(ctx->db,
- idmap_tdb_sids_to_unixids_action,
- &state);
- }
-
- return ret;
-}
-
-
-/**********************************
- Close the idmap tdb instance
-**********************************/
-
static struct idmap_methods db_methods = {
.init = idmap_tdb_db_init,
- .unixids_to_sids = idmap_tdb_unixids_to_sids,
- .sids_to_unixids = idmap_tdb_sids_to_unixids,
- .allocate_id = idmap_tdb_get_new_id,
+ .unixids_to_sids = idmap_tdb_common_unixids_to_sids,
+ .sids_to_unixids = idmap_tdb_common_sids_to_unixids,
+ .allocate_id = idmap_tdb_common_get_new_id,
};
NTSTATUS idmap_tdb_init(void)
git.samba.org / amitay / samba.git / blobdiff