diff options
Diffstat (limited to 'source3/nsswitch/idmap_tdb.c')
| -rw-r--r-- | source3/nsswitch/idmap_tdb.c | 1232 |
1 files changed, 0 insertions, 1232 deletions
diff --git a/source3/nsswitch/idmap_tdb.c b/source3/nsswitch/idmap_tdb.c deleted file mode 100644 index 97000689fa..0000000000 --- a/source3/nsswitch/idmap_tdb.c +++ /dev/null @@ -1,1232 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - idmap TDB backend - - Copyright (C) Tim Potter 2000 - Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003 - Copyright (C) Jeremy Allison 2006 - Copyright (C) Simo Sorce 2003-2006 - - 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_IDMAP - -/* 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; - -/***************************************************************************** - For idmap conversion: convert one record to new format - Ancient versions (eg 2.2.3a) of winbindd_idmap.tdb mapped DOMAINNAME/rid - instead of the SID. -*****************************************************************************/ -static int convert_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA data, void *state) -{ - struct winbindd_domain *domain; - char *p; - DOM_SID sid; - uint32 rid; - fstring keystr; - fstring dom_name; - TDB_DATA key2; - BOOL *failed = (BOOL *)state; - - DEBUG(10,("Converting %s\n", (const char *)key.dptr)); - - p = strchr((const char *)key.dptr, '/'); - if (!p) - return 0; - - *p = 0; - fstrcpy(dom_name, (const char *)key.dptr); - *p++ = '/'; - - domain = find_domain_from_name(dom_name); - if (domain == NULL) { - /* We must delete the old record. */ - DEBUG(0,("Unable to find domain %s\n", dom_name )); - DEBUG(0,("deleting record %s\n", (const char *)key.dptr )); - - if (tdb_delete(tdb, key) != 0) { - DEBUG(0, ("Unable to delete record %s\n", (const char *)key.dptr)); - *failed = True; - return -1; - } - - return 0; - } - - rid = atoi(p); - - sid_copy(&sid, &domain->sid); - sid_append_rid(&sid, rid); - - sid_to_string(keystr, &sid); - key2 = string_term_tdb_data(keystr); - - if (tdb_store(tdb, key2, data, TDB_INSERT) != 0) { - DEBUG(0,("Unable to add record %s\n", (const char *)key2.dptr )); - *failed = True; - return -1; - } - - if (tdb_store(tdb, data, key2, TDB_REPLACE) != 0) { - DEBUG(0,("Unable to update record %s\n", (const char *)data.dptr )); - *failed = True; - return -1; - } - - if (tdb_delete(tdb, key) != 0) { - DEBUG(0,("Unable to delete record %s\n", (const char *)key.dptr )); - *failed = True; - return -1; - } - - return 0; -} - -/***************************************************************************** - Convert the idmap database from an older version. -*****************************************************************************/ - -static BOOL idmap_tdb_upgrade(const char *idmap_name) -{ - int32 vers; - BOOL bigendianheader; - BOOL failed = False; - TDB_CONTEXT *idmap_tdb; - - DEBUG(0, ("Upgrading winbindd_idmap.tdb from an old version\n")); - - if (!(idmap_tdb = tdb_open_log(idmap_name, 0, - TDB_DEFAULT, O_RDWR, - 0600))) { - DEBUG(0, ("Unable to open idmap database\n")); - return False; - } - - bigendianheader = (tdb_get_flags(idmap_tdb) & TDB_BIGENDIAN) ? True : False; - - vers = tdb_fetch_int32(idmap_tdb, "IDMAP_VERSION"); - - if (((vers == -1) && bigendianheader) || (IREV(vers) == IDMAP_VERSION)) { - /* Arrggghh ! Bytereversed or old big-endian - make order independent ! */ - /* - * high and low records were created on a - * big endian machine and will need byte-reversing. - */ - - int32 wm; - - wm = tdb_fetch_int32(idmap_tdb, HWM_USER); - - if (wm != -1) { - wm = IREV(wm); - } else { - wm = idmap_tdb_state.low_uid; - } - - if (tdb_store_int32(idmap_tdb, HWM_USER, wm) == -1) { - DEBUG(0, ("Unable to byteswap user hwm in idmap database\n")); - tdb_close(idmap_tdb); - return False; - } - - wm = tdb_fetch_int32(idmap_tdb, HWM_GROUP); - if (wm != -1) { - wm = IREV(wm); - } else { - wm = idmap_tdb_state.low_gid; - } - - if (tdb_store_int32(idmap_tdb, HWM_GROUP, wm) == -1) { - DEBUG(0, ("Unable to byteswap group hwm in idmap database\n")); - tdb_close(idmap_tdb); - return False; - } - } - - /* the old format stored as DOMAIN/rid - now we store the SID direct */ - tdb_traverse(idmap_tdb, convert_fn, &failed); - - if (failed) { - DEBUG(0, ("Problem during conversion\n")); - tdb_close(idmap_tdb); - return False; - } - - if (tdb_store_int32(idmap_tdb, "IDMAP_VERSION", IDMAP_VERSION) == -1) { - DEBUG(0, ("Unable to dtore idmap version in databse\n")); - tdb_close(idmap_tdb); - return False; - } - - tdb_close(idmap_tdb); - return True; -} - -/* WARNING: We can't open a tdb twice inthe same process, for that reason - * I'm going to use a hack with open ref counts to open the winbindd_idmap.tdb - * only once. We will later decide whether to split the db in multiple files - * or come up with a better solution to share them. */ - -static TDB_CONTEXT *idmap_tdb_common_ctx; -static int idmap_tdb_open_ref_count = 0; - -static NTSTATUS idmap_tdb_open_db(TALLOC_CTX *memctx, TDB_CONTEXT **tdbctx) -{ - NTSTATUS ret; - TALLOC_CTX *ctx; - SMB_STRUCT_STAT stbuf; - char *tdbfile = NULL; - int32 version; - BOOL tdb_is_new = False; - - if (idmap_tdb_open_ref_count) { /* the tdb has already been opened */ - idmap_tdb_open_ref_count++; - *tdbctx = idmap_tdb_common_ctx; - return NT_STATUS_OK; - } - - /* use our own context here */ - ctx = talloc_new(memctx); - if (!ctx) { - DEBUG(0, ("Out of memory!\n")); - return NT_STATUS_NO_MEMORY; - } - - /* use the old database if present */ - tdbfile = talloc_strdup(ctx, lock_path("winbindd_idmap.tdb")); - if (!tdbfile) { - DEBUG(0, ("Out of memory!\n")); - ret = NT_STATUS_NO_MEMORY; - goto done; - } - - if (!file_exist(tdbfile, &stbuf)) { - tdb_is_new = True; - } - - DEBUG(10,("Opening tdbfile %s\n", tdbfile )); - - /* Open idmap repository */ - if (!(idmap_tdb_common_ctx = tdb_open_log(tdbfile, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644))) { - DEBUG(0, ("Unable to open idmap database\n")); - ret = NT_STATUS_UNSUCCESSFUL; - goto done; - } - - if (tdb_is_new) { - /* 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_common_ctx, "IDMAP_VERSION", IDMAP_VERSION); - } - - /* check against earlier versions */ - version = tdb_fetch_int32(idmap_tdb_common_ctx, "IDMAP_VERSION"); - if (version != IDMAP_VERSION) { - - /* backup_tdb expects the tdb not to be open */ - tdb_close(idmap_tdb_common_ctx); - - if ( ! idmap_tdb_upgrade(tdbfile)) { - - DEBUG(0, ("Unable to open idmap database, it's in an old formati, and upgrade failed!\n")); - ret = NT_STATUS_INTERNAL_DB_ERROR; - goto done; - } - - /* Re-Open idmap repository */ - if (!(idmap_tdb_common_ctx = tdb_open_log(tdbfile, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644))) { - DEBUG(0, ("Unable to open idmap database\n")); - ret = NT_STATUS_UNSUCCESSFUL; - goto done; - } - } - - *tdbctx = idmap_tdb_common_ctx; - idmap_tdb_open_ref_count++; - ret = NT_STATUS_OK; - -done: - talloc_free(ctx); - return ret; -} - - /* NEVER use tdb_close() except for the conversion routines that are guaranteed - * to run only when the database is opened the first time, always use this function. */ - -BOOL idmap_tdb_tdb_close(TDB_CONTEXT *tdbctx) -{ - if (tdbctx != idmap_tdb_common_ctx) { - DEBUG(0, ("ERROR: Invalid tdb context!")); - return False; - } - - idmap_tdb_open_ref_count--; - if (idmap_tdb_open_ref_count) { - return True; - } - - return tdb_close(idmap_tdb_common_ctx); -} - -/********************************************************************** - IDMAP ALLOC TDB BACKEND -**********************************************************************/ - -static TDB_CONTEXT *idmap_alloc_tdb; - -/********************************** - Initialise idmap alloc database. -**********************************/ - -static NTSTATUS idmap_tdb_alloc_init( const char *params ) -{ - NTSTATUS ret; - TALLOC_CTX *ctx; - const char *range; - uid_t low_uid = 0; - uid_t high_uid = 0; - gid_t low_gid = 0; - gid_t high_gid = 0; - - /* use our own context here */ - ctx = talloc_new(NULL); - if (!ctx) { - DEBUG(0, ("Out of memory!\n")); - return NT_STATUS_NO_MEMORY; - } - - ret = idmap_tdb_open_db(ctx, &idmap_alloc_tdb); - if ( ! NT_STATUS_IS_OK(ret)) { - talloc_free(ctx); - return ret; - } - - talloc_free(ctx); - - /* load ranges */ - idmap_tdb_state.low_uid = 0; - idmap_tdb_state.high_uid = 0; - idmap_tdb_state.low_gid = 0; - idmap_tdb_state.high_gid = 0; - - range = lp_parm_const_string(-1, "idmap alloc config", "range", NULL); - if (range && range[0]) { - unsigned low_id, high_id; - - if (sscanf(range, "%u - %u", &low_id, &high_id) == 2) { - if (low_id < high_id) { - idmap_tdb_state.low_gid = idmap_tdb_state.low_uid = low_id; - idmap_tdb_state.high_gid = idmap_tdb_state.high_uid = high_id; - } else { - DEBUG(1, ("ERROR: invalid idmap alloc range [%s]", range)); - } - } else { - DEBUG(1, ("ERROR: invalid syntax for idmap alloc config:range [%s]", range)); - } - } - - /* Create high water marks for group and user id */ - if (lp_idmap_uid(&low_uid, &high_uid)) { - idmap_tdb_state.low_uid = low_uid; - idmap_tdb_state.high_uid = high_uid; - } - - if (lp_idmap_gid(&low_gid, &high_gid)) { - idmap_tdb_state.low_gid = low_gid; - idmap_tdb_state.high_gid = high_gid; - } - - if (idmap_tdb_state.high_uid <= idmap_tdb_state.low_uid) { - DEBUG(1, ("idmap uid range missing or invalid\n")); - DEBUGADD(1, ("idmap will be unable to map foreign SIDs\n")); - return NT_STATUS_UNSUCCESSFUL; - } else { - uint32 low_id; - - if (((low_id = tdb_fetch_int32(idmap_alloc_tdb, HWM_USER)) == -1) || - (low_id < idmap_tdb_state.low_uid)) { - if (tdb_store_int32(idmap_alloc_tdb, HWM_USER, idmap_tdb_state.low_uid) == -1) { - DEBUG(0, ("Unable to initialise user hwm in idmap database\n")); - return NT_STATUS_INTERNAL_DB_ERROR; - } - } - } - - if (idmap_tdb_state.high_gid <= idmap_tdb_state.low_gid) { - DEBUG(1, ("idmap gid range missing or invalid\n")); - DEBUGADD(1, ("idmap will be unable to map foreign SIDs\n")); - return NT_STATUS_UNSUCCESSFUL; - } else { - uint32 low_id; - - if (((low_id = tdb_fetch_int32(idmap_alloc_tdb, HWM_GROUP)) == -1) || - (low_id < idmap_tdb_state.low_gid)) { - if (tdb_store_int32(idmap_alloc_tdb, HWM_GROUP, idmap_tdb_state.low_gid) == -1) { - DEBUG(0, ("Unable to initialise group hwm in idmap database\n")); - return NT_STATUS_INTERNAL_DB_ERROR; - } - } - } - - return NT_STATUS_OK; -} - -/********************************** - Allocate a new id. -**********************************/ - -static NTSTATUS idmap_tdb_allocate_id(struct unixid *xid) -{ - BOOL ret; - const char *hwmkey; - const char *hwmtype; - uint32_t high_hwm; - uint32_t hwm; - - /* Get current high water mark */ - switch (xid->type) { - - case ID_TYPE_UID: - hwmkey = HWM_USER; - hwmtype = "UID"; - high_hwm = idmap_tdb_state.high_uid; - break; - - case ID_TYPE_GID: - hwmkey = HWM_GROUP; - hwmtype = "GID"; - high_hwm = idmap_tdb_state.high_gid; - break; - - default: - DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type)); - return NT_STATUS_INVALID_PARAMETER; - } - - if ((hwm = tdb_fetch_int32(idmap_alloc_tdb, hwmkey)) == -1) { - return NT_STATUS_INTERNAL_DB_ERROR; - } - - /* check it is in the range */ - if (hwm > high_hwm) { - DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n", - hwmtype, (unsigned long)high_hwm)); - return NT_STATUS_UNSUCCESSFUL; - } - - /* fetch a new id and increment it */ - ret = tdb_change_uint32_atomic(idmap_alloc_tdb, hwmkey, &hwm, 1); - if (!ret) { - DEBUG(1, ("Fatal error while fetching a new %s value\n!", hwmtype)); - return NT_STATUS_UNSUCCESSFUL; - } - - /* recheck it is in the range */ - if (hwm > high_hwm) { - DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n", - hwmtype, (unsigned long)high_hwm)); - return NT_STATUS_UNSUCCESSFUL; - } - - xid->id = hwm; - DEBUG(10,("New %s = %d\n", hwmtype, hwm)); - - return NT_STATUS_OK; -} - -/********************************** - Get current highest id. -**********************************/ - -static NTSTATUS idmap_tdb_get_hwm(struct unixid *xid) -{ - const char *hwmkey; - const char *hwmtype; - uint32_t hwm; - uint32_t high_hwm; - - /* Get current high water mark */ - switch (xid->type) { - - case ID_TYPE_UID: - hwmkey = HWM_USER; - hwmtype = "UID"; - high_hwm = idmap_tdb_state.high_uid; - break; - - case ID_TYPE_GID: - hwmkey = HWM_GROUP; - hwmtype = "GID"; - high_hwm = idmap_tdb_state.high_gid; - break; - - default: - return NT_STATUS_INVALID_PARAMETER; - } - - if ((hwm = tdb_fetch_int32(idmap_alloc_tdb, hwmkey)) == -1) { - return NT_STATUS_INTERNAL_DB_ERROR; - } - - xid->id = hwm; - - /* Warn if it is out of range */ - if (hwm >= high_hwm) { - DEBUG(0, ("Warning: %s range full!! (max: %lu)\n", - hwmtype, (unsigned long)high_hwm)); - } - - return NT_STATUS_OK; -} - -/********************************** - Set high id. -**********************************/ - -static NTSTATUS idmap_tdb_set_hwm(struct unixid *xid) -{ - const char *hwmkey; - const char *hwmtype; - uint32_t hwm; - uint32_t high_hwm; - - /* Get current high water mark */ - switch (xid->type) { - - case ID_TYPE_UID: - hwmkey = HWM_USER; - hwmtype = "UID"; - high_hwm = idmap_tdb_state.high_uid; - break; - - case ID_TYPE_GID: - hwmkey = HWM_GROUP; - hwmtype = "GID"; - high_hwm = idmap_tdb_state.high_gid; - break; - - default: - return NT_STATUS_INVALID_PARAMETER; - } - - hwm = xid->id; - - if ((hwm = tdb_store_int32(idmap_alloc_tdb, hwmkey, hwm)) == -1) { - return NT_STATUS_INTERNAL_DB_ERROR; - } - - /* Warn if it is out of range */ - if (hwm >= high_hwm) { - DEBUG(0, ("Warning: %s range full!! (max: %lu)\n", - hwmtype, (unsigned long)high_hwm)); - } - - return NT_STATUS_OK; -} - -/********************************** - Close the alloc tdb -**********************************/ - -static NTSTATUS idmap_tdb_alloc_close(void) -{ - if (idmap_alloc_tdb) { - if (idmap_tdb_tdb_close(idmap_alloc_tdb) == 0) { - return NT_STATUS_OK; - } else { - return NT_STATUS_UNSUCCESSFUL; - } - } - return NT_STATUS_OK; -} - -/********************************************************************** - IDMAP MAPPING TDB BACKEND -**********************************************************************/ - -struct idmap_tdb_context { - TDB_CONTEXT *tdb; - uint32_t filter_low_id; - uint32_t filter_high_id; -}; - -/***************************** - Initialise idmap database. -*****************************/ - -static NTSTATUS idmap_tdb_db_init(struct idmap_domain *dom) -{ - NTSTATUS ret; - struct idmap_tdb_context *ctx; - char *config_option = NULL; - const char *range; - - ctx = talloc(dom, struct idmap_tdb_context); - if ( ! ctx) { - DEBUG(0, ("Out of memory!\n")); - return NT_STATUS_NO_MEMORY; - } - - config_option = talloc_asprintf(ctx, "idmap config %s", dom->name); - if ( ! config_option) { - DEBUG(0, ("Out of memory!\n")); - ret = NT_STATUS_NO_MEMORY; - goto failed; - } - - ret = idmap_tdb_open_db(ctx, &ctx->tdb); - if ( ! NT_STATUS_IS_OK(ret)) { - goto failed; - } - - range = lp_parm_const_string(-1, config_option, "range", NULL); - if (( ! range) || - (sscanf(range, "%u - %u", &ctx->filter_low_id, &ctx->filter_high_id) != 2) || - (ctx->filter_low_id > ctx->filter_high_id)) { - ctx->filter_low_id = 0; - ctx->filter_high_id = 0; - } - - dom->private_data = ctx; - dom->initialized = True; - - talloc_free(config_option); - return NT_STATUS_OK; - -failed: - talloc_free(ctx); - return ret; -} - -/********************************** - Single id to sid lookup function. -**********************************/ - -static NTSTATUS idmap_tdb_id_to_sid(struct idmap_tdb_context *ctx, struct id_map *map) -{ - NTSTATUS ret; - TDB_DATA data; - char *keystr; - - if (!ctx || !map) { - return NT_STATUS_INVALID_PARAMETER; - } - - /* apply filters before checking */ - if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) || - (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) { - DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n", - map->xid.id, ctx->filter_low_id, ctx->filter_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 */ - data = tdb_fetch_bystring(ctx->tdb, keystr); - - if (!data.dptr) { - 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: - SAFE_FREE(data.dptr); - talloc_free(keystr); - return ret; -} - -/********************************** - Single sid to id lookup function. -**********************************/ - -static NTSTATUS idmap_tdb_sid_to_id(struct idmap_tdb_context *ctx, struct id_map *map) -{ - NTSTATUS ret; - TDB_DATA data; - char *keystr; - unsigned long rec_id = 0; - - if ((keystr = talloc_asprintf(ctx, "%s", sid_string_static(map->sid))) == 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 */ - data = tdb_fetch_bystring(ctx->tdb, keystr); - if (!data.dptr) { - 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; - } - - SAFE_FREE(data.dptr); - - /* apply filters before returning result */ - if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) || - (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) { - DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n", - map->xid.id, ctx->filter_low_id, ctx->filter_high_id)); - ret = NT_STATUS_NONE_MAPPED; - } - -done: - talloc_free(keystr); - return ret; -} - -/********************************** - lookup a set of unix ids. -**********************************/ - -static NTSTATUS idmap_tdb_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids) -{ - struct idmap_tdb_context *ctx; - NTSTATUS ret; - int i; - - /* make sure we initialized */ - if ( ! dom->initialized) { - ret = idmap_tdb_db_init(dom); - if ( ! NT_STATUS_IS_OK(ret)) { - return ret; - } - } - - ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context); - - for (i = 0; ids[i]; i++) { - ret = idmap_tdb_id_to_sid(ctx, 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. -**********************************/ - -static NTSTATUS idmap_tdb_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids) -{ - struct idmap_tdb_context *ctx; - NTSTATUS ret; - int i; - - /* make sure we initialized */ - if ( ! dom->initialized) { - ret = idmap_tdb_db_init(dom); - if ( ! NT_STATUS_IS_OK(ret)) { - return ret; - } - } - - ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context); - - for (i = 0; ids[i]; i++) { - ret = idmap_tdb_sid_to_id(ctx, 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; -} - -/********************************** - set a mapping. -**********************************/ - -static NTSTATUS idmap_tdb_set_mapping(struct idmap_domain *dom, const struct id_map *map) -{ - struct idmap_tdb_context *ctx; - NTSTATUS ret; - TDB_DATA ksid, kid, data; - char *ksidstr, *kidstr; - - /* make sure we initialized */ - if ( ! dom->initialized) { - ret = idmap_tdb_db_init(dom); - if ( ! NT_STATUS_IS_OK(ret)) { - return ret; - } - } - - if (!map || !map->sid) { - return NT_STATUS_INVALID_PARAMETER; - } - - ksidstr = kidstr = NULL; - data.dptr = 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; - } - - if ((ksidstr = talloc_asprintf(ctx, "%s", sid_string_static(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); - - /* *DELETE* previous mappings if any. - * This is done both SID and [U|G]ID passed in */ - - /* Lock the record for this SID. */ - if (tdb_chainlock(ctx->tdb, ksid) != 0) { - DEBUG(10,("Failed to lock record %s. Error %s\n", - ksidstr, tdb_errorstr(ctx->tdb) )); - return NT_STATUS_UNSUCCESSFUL; - } - - data = tdb_fetch(ctx->tdb, ksid); - if (data.dptr) { - DEBUG(10, ("Deleting existing mapping %s <-> %s\n", (const char *)data.dptr, ksidstr )); - tdb_delete(ctx->tdb, data); - tdb_delete(ctx->tdb, ksid); - SAFE_FREE(data.dptr); - } - - data = tdb_fetch(ctx->tdb, kid); - if (data.dptr) { - DEBUG(10,("Deleting existing mapping %s <-> %s\n", (const char *)data.dptr, kidstr )); - tdb_delete(ctx->tdb, data); - tdb_delete(ctx->tdb, kid); - SAFE_FREE(data.dptr); - } - - if (tdb_store(ctx->tdb, ksid, kid, TDB_INSERT) == -1) { - DEBUG(0, ("Error storing SID -> ID: %s\n", tdb_errorstr(ctx->tdb))); - tdb_chainunlock(ctx->tdb, ksid); - ret = NT_STATUS_UNSUCCESSFUL; - goto done; - } - if (tdb_store(ctx->tdb, kid, ksid, TDB_INSERT) == -1) { - DEBUG(0, ("Error stroing ID -> SID: %s\n", tdb_errorstr(ctx->tdb))); - /* try to remove the previous stored SID -> ID map */ - tdb_delete(ctx->tdb, ksid); - tdb_chainunlock(ctx->tdb, ksid); - ret = NT_STATUS_UNSUCCESSFUL; - goto done; - } - - tdb_chainunlock(ctx->tdb, ksid); - DEBUG(10,("Stored %s <-> %s\n", ksidstr, kidstr)); - ret = NT_STATUS_OK; - -done: - talloc_free(ksidstr); - talloc_free(kidstr); - SAFE_FREE(data.dptr); - return ret; -} - -/********************************** - remove a mapping. -**********************************/ - -static NTSTATUS idmap_tdb_remove_mapping(struct idmap_domain *dom, const struct id_map *map) -{ - struct idmap_tdb_context *ctx; - NTSTATUS ret; - TDB_DATA ksid, kid, data; - char *ksidstr, *kidstr; - - /* make sure we initialized */ - if ( ! dom->initialized) { - ret = idmap_tdb_db_init(dom); - if ( ! NT_STATUS_IS_OK(ret)) { - return ret; - } - } - - if (!map || !map->sid) { - return NT_STATUS_INVALID_PARAMETER; - } - - ksidstr = kidstr = NULL; - data.dptr = NULL; - - /* TODO: should we filter a remove_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; - } - - if ((ksidstr = talloc_asprintf(ctx, "%s", sid_string_static(map->sid))) == NULL) { - DEBUG(0, ("Out of memory!\n")); - ret = NT_STATUS_NO_MEMORY; - goto done; - } - - DEBUG(10, ("Checking %s <-> %s map\n", ksidstr, kidstr)); - ksid = string_term_tdb_data(ksidstr); - kid = string_term_tdb_data(kidstr); - - /* Lock the record for this SID. */ - if (tdb_chainlock(ctx->tdb, ksid) != 0) { - DEBUG(10,("Failed to lock record %s. Error %s\n", - ksidstr, tdb_errorstr(ctx->tdb) )); - return NT_STATUS_UNSUCCESSFUL; - } - - /* Check if sid is present in database */ - data = tdb_fetch(ctx->tdb, ksid); - if (!data.dptr) { - DEBUG(10,("Record %s not found\n", ksidstr)); - tdb_chainunlock(ctx->tdb, ksid); - ret = NT_STATUS_NONE_MAPPED; - goto done; - } - - /* Check if sid is mapped to the specified ID */ - if ((data.dsize != kid.dsize) || - (memcmp(data.dptr, kid.dptr, data.dsize) != 0)) { - DEBUG(10,("Specified SID does not map to specified ID\n")); - DEBUGADD(10,("Actual mapping is %s -> %s\n", ksidstr, (const char *)data.dptr)); - tdb_chainunlock(ctx->tdb, ksid); - ret = NT_STATUS_NONE_MAPPED; - goto done; - } - - DEBUG(10, ("Removing %s <-> %s map\n", ksidstr, kidstr)); - - /* Delete previous mappings. */ - - DEBUG(10, ("Deleting existing mapping %s -> %s\n", ksidstr, kidstr )); - tdb_delete(ctx->tdb, ksid); - - DEBUG(10,("Deleting existing mapping %s -> %s\n", kidstr, ksidstr )); - tdb_delete(ctx->tdb, kid); - - tdb_chainunlock(ctx->tdb, ksid); - ret = NT_STATUS_OK; - -done: - talloc_free(ksidstr); - talloc_free(kidstr); - SAFE_FREE(data.dptr); - return ret; -} - -/********************************** - Close the idmap tdb instance -**********************************/ - -static NTSTATUS idmap_tdb_close(struct idmap_domain *dom) -{ - struct idmap_tdb_context *ctx; - - if (dom->private_data) { - ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context); - - if (idmap_tdb_tdb_close(ctx->tdb) == 0) { - return NT_STATUS_OK; - } else { - return NT_STATUS_UNSUCCESSFUL; - } - } - return NT_STATUS_OK; -} - -struct dump_data { - TALLOC_CTX *memctx; - struct id_map **maps; - int *num_maps; - NTSTATUS ret; -}; - -static int idmap_tdb_dump_one_entry(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA value, void *pdata) -{ - struct dump_data *data = talloc_get_type(pdata, struct dump_data); - struct id_map *maps; - int num_maps = *data->num_maps; - - /* ignore any record but the ones with a SID as key */ - if (strncmp((const char *)key.dptr, "S-", 2) == 0) { - - maps = talloc_realloc(NULL, *data->maps, struct id_map, num_maps+1); - if ( ! maps) { - DEBUG(0, ("Out of memory!\n")); - data->ret = NT_STATUS_NO_MEMORY; - return -1; - } - *data->maps = maps; - maps[num_maps].sid = talloc(maps, DOM_SID); - if ( ! maps[num_maps].sid) { - DEBUG(0, ("Out of memory!\n")); - data->ret = NT_STATUS_NO_MEMORY; - return -1; - } - - if (!string_to_sid(maps[num_maps].sid, (const char *)key.dptr)) { - DEBUG(10,("INVALID record %s\n", (const char *)key.dptr)); - /* continue even with errors */ - return 0; - } - - /* Try a UID record. */ - if (sscanf((const char *)value.dptr, "UID %u", &(maps[num_maps].xid.id)) == 1) { - maps[num_maps].xid.type = ID_TYPE_UID; - maps[num_maps].status = ID_MAPPED; - *data->num_maps = num_maps + 1; - - /* Try a GID record. */ - } else - if (sscanf((const char *)value.dptr, "GID %u", &(maps[num_maps].xid.id)) == 1) { - maps[num_maps].xid.type = ID_TYPE_GID; - maps[num_maps].status = ID_MAPPED; - *data->num_maps = num_maps + 1; - - /* Unknown record type ! */ - } else { - maps[num_maps].status = ID_UNKNOWN; - DEBUG(2, ("Found INVALID record %s -> %s\n", - (const char *)key.dptr, (const char *)value.dptr)); - /* do not increment num_maps */ - } - } - - return 0; -} - -/********************************** - Dump all mappings out -**********************************/ - -static NTSTATUS idmap_tdb_dump_data(struct idmap_domain *dom, struct id_map **maps, int *num_maps) -{ - struct idmap_tdb_context *ctx; - struct dump_data *data; - NTSTATUS ret = NT_STATUS_OK; - - /* make sure we initialized */ - if ( ! dom->initialized) { - ret = idmap_tdb_db_init(dom); - if ( ! NT_STATUS_IS_OK(ret)) { - return ret; - } - } - - ctx = talloc_get_type(dom->private_data, struct idmap_tdb_context); - - data = TALLOC_ZERO_P(ctx, struct dump_data); - if ( ! data) { - DEBUG(0, ("Out of memory!\n")); - return NT_STATUS_NO_MEMORY; - } - data->maps = maps; - data->num_maps = num_maps; - data->ret = NT_STATUS_OK; - - tdb_traverse(ctx->tdb, idmap_tdb_dump_one_entry, data); - - if ( ! NT_STATUS_IS_OK(data->ret)) { - ret = data->ret; - } - - talloc_free(data); - return ret; -} - -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, - .set_mapping = idmap_tdb_set_mapping, - .remove_mapping = idmap_tdb_remove_mapping, - .dump_data = idmap_tdb_dump_data, - .close_fn = idmap_tdb_close -}; - -static struct idmap_alloc_methods db_alloc_methods = { - - .init = idmap_tdb_alloc_init, - .allocate_id = idmap_tdb_allocate_id, - .get_id_hwm = idmap_tdb_get_hwm, - .set_id_hwm = idmap_tdb_set_hwm, - .close_fn = idmap_tdb_alloc_close -}; - -NTSTATUS idmap_alloc_tdb_init(void) -{ - return smb_register_idmap_alloc(SMB_IDMAP_INTERFACE_VERSION, "tdb", &db_alloc_methods); -} - -NTSTATUS idmap_tdb_init(void) -{ - NTSTATUS ret; - - /* FIXME: bad hack to actually register also the alloc_tdb module without changining configure.in */ - ret = idmap_alloc_tdb_init(); - if (! NT_STATUS_IS_OK(ret)) { - return ret; - } - return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb", &db_methods); -} |