Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
Copyright (C) Jeremy Allison 2006
Copyright (C) Simo Sorce 2003-2006
+ Copyright (C) Michael Adam 2009-2010
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
#include "includes.h"
#include "winbindd.h"
+#include "idmap_rw.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP
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"
-static struct idmap_tdb_state {
-
- /* User and group id pool */
- uid_t low_uid, high_uid; /* Range of uids to allocate */
- gid_t low_gid, high_gid; /* Range of gids to allocate */
-
-} idmap_tdb_state;
-
struct convert_fn_state {
struct db_context *db;
bool failed;
ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context);
+ if (ctx->db) {
+ /* it is already open */
+ return NT_STATUS_OK;
+ }
+
/* use our own context here */
mem_ctx = talloc_stackframe();
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, const char *params)
{
NTSTATUS ret;
struct idmap_tdb_context *ctx;
- ctx = talloc(dom, struct idmap_tdb_context);
+ ctx = talloc_zero(dom, struct idmap_tdb_context);
if ( ! ctx) {
DEBUG(0, ("Out of memory!\n"));
return NT_STATUS_NO_MEMORY;
}
#endif
+ ctx->rw_ops = talloc_zero(ctx, struct idmap_rw_ops);
+ if (ctx->rw_ops == NULL) {
+ DEBUG(0, ("Out of memory!\n"));
+ ret = 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;
+
dom->private_data = ctx;
ret = idmap_tdb_open_db(dom);
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;
+
+ if (map == NULL) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ if ((map->xid.type != ID_TYPE_UID) && (map->xid.type != ID_TYPE_GID)) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ if (map->sid == NULL) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
+
+ ret = idmap_tdb_get_new_id(dom, &map->xid);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(3, ("Could not allocate id: %s\n", nt_errstr(ret)));
+ goto done;
+ }
+
+ DEBUG(10, ("Setting mapping: %s <-> %s %lu\n",
+ sid_string_dbg(map->sid),
+ (map->xid.type == ID_TYPE_UID) ? "UID" : "GID",
+ (unsigned long)map->xid.id));
+
+ map->status = ID_MAPPED;
+
+ /* store the mapping */
+ ret = idmap_tdb_set_mapping(dom, map);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(3, ("Could not store the new mapping: %s\n",
+ nt_errstr(ret)));
+ }
+
+done:
+ return ret;
+}
+
+
/**********************************
Single id to sid lookup function.
**********************************/
lookup a set of sids.
**********************************/
-static NTSTATUS idmap_tdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
+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_context *ctx;
- NTSTATUS ret;
+ struct idmap_tdb_sids_to_unixids_context *state;
int i;
+ NTSTATUS ret;
- /* 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);
-
- for (i = 0; ids[i]; i++) {
- ret = idmap_tdb_sid_to_id(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;
+ 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;
}
-
- /* some fatal error occurred, return immediately */
- goto done;
}
- /* all ok, id is mapped */
- 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;
+ }
+ }
}
- ret = NT_STATUS_OK;
-
done:
return ret;
}
-/**********************************
- set a mapping.
-**********************************/
-
-static NTSTATUS idmap_tdb_set_mapping(struct idmap_domain *dom,
- const struct id_map *map)
+static NTSTATUS idmap_tdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
{
struct idmap_tdb_context *ctx;
NTSTATUS ret;
- TDB_DATA ksid, kid;
- char *ksidstr, *kidstr;
- fstring tmp;
+ int i;
+ struct idmap_tdb_sids_to_unixids_context state;
- if (!map || !map->sid) {
- return NT_STATUS_INVALID_PARAMETER;
+ /* initialize the status to avoid suprise */
+ for (i = 0; ids[i]; i++) {
+ ids[i]->status = ID_UNKNOWN;
}
-
- 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;
+ state.dom = dom;
+ state.ids = ids;
+ state.allocate_unmapped = false;
- default:
- DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
- return NT_STATUS_INVALID_PARAMETER;
- }
+ ret = idmap_tdb_sids_to_unixids_action(ctx->db, &state);
- if (kidstr == NULL) {
- DEBUG(0, ("ERROR: Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
+ 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);
}
- if ((ksidstr = talloc_asprintf(
- ctx, "%s", sid_to_fstring(tmp, map->sid))) == NULL) {
- DEBUG(0, ("Out of memory!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto done;
- }
-
- DEBUG(10, ("Storing %s <-> %s map\n", ksidstr, kidstr));
- kid = string_term_tdb_data(kidstr);
- ksid = string_term_tdb_data(ksidstr);
-
- if (ctx->db->transaction_start(ctx->db) != 0) {
- DEBUG(0, ("Failed to start transaction for %s\n",
- ksidstr));
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
- }
-
- ret = dbwrap_store(ctx->db, ksid, kid, TDB_REPLACE);
- if (!NT_STATUS_IS_OK(ret)) {
- ctx->db->transaction_cancel(ctx->db);
- DEBUG(0, ("Error storing SID -> ID (%s -> %s): %s\n",
- ksidstr, kidstr, nt_errstr(ret)));
- goto done;
- }
- ret = dbwrap_store(ctx->db, kid, ksid, TDB_REPLACE);
- if (!NT_STATUS_IS_OK(ret)) {
- ctx->db->transaction_cancel(ctx->db);
- DEBUG(0, ("Error storing ID -> SID (%s -> %s): %s\n",
- kidstr, ksidstr, nt_errstr(ret)));
- goto done;
- }
-
- if (ctx->db->transaction_commit(ctx->db) != 0) {
- DEBUG(0, ("Failed to commit transaction for (%s -> %s)\n",
- ksidstr, kidstr));
- ret = NT_STATUS_INTERNAL_DB_ERROR;
- goto done;
- }
-
- DEBUG(10,("Stored %s <-> %s\n", ksidstr, kidstr));
- ret = NT_STATUS_OK;
-
-done:
- talloc_free(ksidstr);
- talloc_free(kidstr);
return ret;
}
+
/**********************************
Close the idmap tdb instance
**********************************/
git.samba.org / metze / samba / wip.git / blobdiff