diff options
Diffstat (limited to 'source3')
| -rw-r--r-- | source3/Makefile.in | 1 | ||||
| -rw-r--r-- | source3/nsswitch/winbindd.h | 25 | ||||
| -rw-r--r-- | source3/nsswitch/winbindd_idmap.c | 625 | ||||
| -rw-r--r-- | source3/nsswitch/winbindd_idmap_tdb.c | 519 | ||||
| -rw-r--r-- | source3/param/loadparm.c | 6 |
5 files changed, 738 insertions, 438 deletions
diff --git a/source3/Makefile.in b/source3/Makefile.in index e04550cf21..efc3b935b4 100644 --- a/source3/Makefile.in +++ b/source3/Makefile.in @@ -579,6 +579,7 @@ WINBINDD_OBJ1 = \ nsswitch/winbindd_user.o \ nsswitch/winbindd_group.o \ nsswitch/winbindd_idmap.o \ + nsswitch/winbindd_idmap_tdb.o \ nsswitch/winbindd_util.o \ nsswitch/winbindd_cache.o \ nsswitch/winbindd_pam.o \ diff --git a/source3/nsswitch/winbindd.h b/source3/nsswitch/winbindd.h index 164b7ffda7..a498b76626 100644 --- a/source3/nsswitch/winbindd.h +++ b/source3/nsswitch/winbindd.h @@ -4,6 +4,7 @@ Winbind daemon for ntdom nss module Copyright (C) Tim Potter 2000 + Copyright (C) Anthony Liguori 2003 This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public @@ -195,6 +196,30 @@ typedef struct { POLICY_HND pol; } CLI_POLICY_HND; +/* Filled out by IDMAP backends */ +struct idmap_methods { + /* Called when backend is first loaded */ + BOOL (*init)(void); + + BOOL (*get_sid_from_uid)(uid_t uid, DOM_SID *sid); + BOOL (*get_sid_from_gid)(gid_t gid, DOM_SID *sid); + + BOOL (*get_uid_from_sid)(DOM_SID *sid, uid_t *uid); + BOOL (*get_gid_from_sid)(DOM_SID *sid, gid_t *gid); + + BOOL (*get_rid_from_uid)(uid_t uid, uint32 *user_rid, + struct winbindd_domain **domain); + BOOL (*get_rid_from_gid)(gid_t gid, uint32 *group_rid, + struct winbindd_domain **domain); + BOOL (*get_uid_from_rid)(const char *dom_name, uint32 rid, uid_t *uid); + BOOL (*get_gid_from_rid)(const char *dom_name, uint32 rid, gid_t *gid); + + /* Called when backend is unloaded */ + BOOL (*close)(void); + /* Called to dump backend status */ + void (*status)(void); +}; + #include "winbindd_proto.h" #include "rpc_parse.h" diff --git a/source3/nsswitch/winbindd_idmap.c b/source3/nsswitch/winbindd_idmap.c index 6d184fec5f..d9448ef859 100644 --- a/source3/nsswitch/winbindd_idmap.c +++ b/source3/nsswitch/winbindd_idmap.c @@ -1,20 +1,19 @@ /* Unix SMB/CIFS implementation. - - Winbind daemon - user related function - + Winbind ID Mapping Copyright (C) Tim Potter 2000 - + Copyright (C) Anthony Liguori <aliguor@us.ibm.com> 2003 + 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 2 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, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. @@ -22,508 +21,258 @@ #include "winbindd.h" -#undef DBGC_CLASS -#define DBGC_CLASS DBGC_WINBIND - -/* High water mark keys */ - -#define HWM_GROUP "GROUP HWM" -#define HWM_USER "USER HWM" - -/* idmap version determines auto-conversion */ -#define IDMAP_VERSION 2 - -/* Globals */ - -static TDB_CONTEXT *idmap_tdb; - -/* Allocate either a user or group id from the pool */ - -static BOOL allocate_id(uid_t *id, BOOL isgroup) +static struct { + const char *name; + /* Function to create a member of the idmap_methods list */ + BOOL (*reg_meth)(struct idmap_methods **methods); + struct idmap_methods *methods; +} builtin_idmap_functions[] = { + { "tdb", winbind_idmap_reg_tdb, NULL }, + /* { "ldap", winbind_idmap_reg_ldap, NULL },*/ + { NULL, NULL, NULL } +}; + +/* singleton pattern: uberlazy evaluation */ +static struct idmap_methods *impl; + +static struct idmap_methods *get_impl(const char *name) { - int hwm; - - /* Get current high water mark */ - - if ((hwm = tdb_fetch_int32(idmap_tdb, - isgroup ? HWM_GROUP : HWM_USER)) == -1) { - return False; - } - - /* Return next available uid in list */ + int i = 0; + struct idmap_methods *ret = NULL; - if ((isgroup && (hwm > server_state.gid_high)) || - (!isgroup && (hwm > server_state.uid_high))) { - DEBUG(0, ("winbind %sid range full!\n", isgroup ? "g" : "u")); - return False; - } + while (builtin_idmap_functions[i].name && + strcmp(builtin_idmap_functions[i].name, name)) { + i++; + } - if (id) { - *id = hwm; + if (builtin_idmap_functions[i].name) { + if (!builtin_idmap_functions[i].methods) { + builtin_idmap_functions[i].reg_meth(&builtin_idmap_functions[i].methods); } - hwm++; + ret = builtin_idmap_functions[i].methods; + } - /* Store new high water mark */ - - tdb_store_int32(idmap_tdb, isgroup ? HWM_GROUP : HWM_USER, hwm); - - return True; + return ret; } -/* Get an id from a rid */ -static BOOL get_id_from_sid(DOM_SID *sid, uid_t *id, BOOL isgroup) +/* Initialize backend */ +BOOL winbindd_idmap_init(void) { - TDB_DATA data, key; - fstring keystr; - BOOL result = False; - - /* Check if sid is present in database */ - sid_to_string(keystr, sid); - - key.dptr = keystr; - key.dsize = strlen(keystr) + 1; - - data = tdb_fetch(idmap_tdb, key); + BOOL ret = False; - if (data.dptr) { - fstring scanstr; - int the_id; + DEBUG(3, ("winbindd_idmap_init: using '%s' as backend\n", + lp_winbind_backend())); - /* Parse and return existing uid */ - fstrcpy(scanstr, isgroup ? "GID" : "UID"); - fstrcat(scanstr, " %d"); - - if (sscanf(data.dptr, scanstr, &the_id) == 1) { - /* Store uid */ - if (id) { - *id = the_id; - } - - result = True; - } - - SAFE_FREE(data.dptr); - } else { - - /* Allocate a new id for this sid */ + if (!impl) { + impl = get_impl(lp_winbind_backend()); + if (!impl) { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } + } - if (id && allocate_id(id, isgroup)) { - fstring keystr2; + if (impl) { + ret = impl->init(); + } - /* Store new id */ - - slprintf(keystr2, sizeof(keystr2), "%s %d", isgroup ? "GID" : "UID", *id); + DEBUG(3, ("winbind_idmap_init: returning %s\n", ret ? "true" : "false")); - data.dptr = keystr2; - data.dsize = strlen(keystr2) + 1; + return ret; +} - tdb_store(idmap_tdb, key, data, TDB_REPLACE); - tdb_store(idmap_tdb, data, key, TDB_REPLACE); +/* Get UID from SID */ +BOOL winbindd_idmap_get_uid_from_sid(DOM_SID *sid, uid_t *uid) +{ + BOOL ret = False; - result = True; - } + if (!impl) { + impl = get_impl(lp_winbind_backend()); + if (!impl) { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); } + } - return result; -} + if (impl) { + ret = impl->get_uid_from_sid(sid, uid); + } -/* Get a uid from a user sid */ -BOOL winbindd_idmap_get_uid_from_sid(DOM_SID *sid, uid_t *uid) -{ - return get_id_from_sid(sid, uid, False); + return ret; } -/* Get a gid from a group sid */ +/* Get GID from SID */ BOOL winbindd_idmap_get_gid_from_sid(DOM_SID *sid, gid_t *gid) { - return get_id_from_sid(sid, gid, True); -} - -/* Get a uid from a user rid */ -BOOL winbindd_idmap_get_uid_from_rid(const char *dom_name, uint32 rid, uid_t *uid) -{ - struct winbindd_domain *domain; - DOM_SID sid; + BOOL ret = False; - if (!(domain = find_domain_from_name(dom_name))) { - return False; - } + if (!impl) { + impl = get_impl(lp_winbind_backend()); + if (!impl) { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } + } - sid_copy(&sid, &domain->sid); - sid_append_rid(&sid, rid); + if (impl) { + ret = impl->get_gid_from_sid(sid, gid); + } - return get_id_from_sid(&sid, uid, False); + return ret; } -/* Get a gid from a group rid */ -BOOL winbindd_idmap_get_gid_from_rid(const char *dom_name, uint32 rid, gid_t *gid) +/* Get UID from RID */ +BOOL winbindd_idmap_get_uid_from_rid(const char *dom_name, uint32 rid, + uid_t *uid) { - struct winbindd_domain *domain; - DOM_SID sid; + BOOL ret = False; - if (!(domain = find_domain_from_name(dom_name))) { - return False; - } + if (!impl) { + impl = get_impl(lp_winbind_backend()); + if (!impl) { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } + } - sid_copy(&sid, &domain->sid); - sid_append_rid(&sid, rid); + if (impl) { + ret = impl->get_uid_from_rid(dom_name, rid, uid); + } - return get_id_from_sid(&sid, gid, True); + return ret; } - -BOOL get_sid_from_id(int id, DOM_SID *sid, BOOL isgroup) +/* Get GID From RID */ +BOOL winbindd_idmap_get_gid_from_rid(const char *dom_name, uint32 rid, + gid_t *gid) { - TDB_DATA key, data; - fstring keystr; - BOOL result = False; - - slprintf(keystr, sizeof(keystr), "%s %d", isgroup ? "GID" : "UID", id); - - key.dptr = keystr; - key.dsize = strlen(keystr) + 1; + BOOL ret = False; - data = tdb_fetch(idmap_tdb, key); - - if (data.dptr) { - result = string_to_sid(sid, data.dptr); - SAFE_FREE(data.dptr); + if (!impl) { + impl = get_impl(lp_winbind_backend()); + if (!impl) { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); } + } + + if (impl) { + ret = impl->get_gid_from_rid(dom_name, rid, gid); + } - return result; + return ret; } -/* Get a sid from a uid */ +/* Get SID from UID */ BOOL winbindd_idmap_get_sid_from_uid(uid_t uid, DOM_SID *sid) { - return get_sid_from_id((int)uid, sid, False); -} + BOOL ret = False; -/* Get a sid from a gid */ -BOOL winbindd_idmap_get_sid_from_gid(gid_t gid, DOM_SID *sid) -{ - return get_sid_from_id((int)gid, sid, True); + if (!impl) { + impl = get_impl(lp_winbind_backend()); + if (!impl) { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } + } + + if (impl) { + ret = impl->get_sid_from_uid(uid, sid); + } + + return ret; } -/* Get a user rid from a uid */ -BOOL winbindd_idmap_get_rid_from_uid(uid_t uid, uint32 *user_rid, - struct winbindd_domain **domain) +/* Get SID from GID */ +BOOL winbindd_idmap_get_sid_from_gid(gid_t gid, DOM_SID *sid) { - DOM_SID sid; + BOOL ret = False; - if (!get_sid_from_id((int)uid, &sid, False)) { - return False; - } + if (!impl) { + impl = get_impl(lp_winbind_backend()); + } - *domain = find_domain_from_sid(&sid); - if (! *domain) return False; + if (impl) { + ret = impl->get_sid_from_gid(gid, sid); + } else { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } - sid_split_rid(&sid, user_rid); - - return True; + return ret; } -/* Get a group rid from a gid */ - -BOOL winbindd_idmap_get_rid_from_gid(gid_t gid, uint32 *group_rid, +/* Get RID From UID */ +BOOL winbindd_idmap_get_rid_from_uid(uid_t uid, uint32 *user_rid, struct winbindd_domain **domain) { - DOM_SID sid; - - if (!get_sid_from_id((int)gid, &sid, True)) { - return False; - } + BOOL ret = False; - *domain = find_domain_from_sid(&sid); - if (! *domain) return False; + if (!impl) { + impl = get_impl(lp_winbind_backend()); + } - sid_split_rid(&sid, group_rid); + if (impl) { + ret = impl->get_rid_from_uid(uid, user_rid, domain); + } else { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } - return True; + return ret; } -/* convert one record to the new format */ -static int convert_fn(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA data, void *ignored) +/* Get RID from GID */ +BOOL winbindd_idmap_get_rid_from_gid(gid_t gid, uint32 *group_rid, + struct winbindd_domain **domain) { - struct winbindd_domain *domain; - char *p; - DOM_SID sid; - uint32 rid; - fstring keystr; - fstring dom_name; - TDB_DATA key2; - - p = strchr(key.dptr, '/'); - if (!p) - return 0; - - *p = 0; - fstrcpy(dom_name, key.dptr); - *p++ = '/'; - - domain = find_domain_from_name(dom_name); - if (!domain) { - /* We must delete the old record. */ - DEBUG(0,("winbindd: convert_fn : Unable to find domain %s\n", dom_name )); - DEBUG(0,("winbindd: convert_fn : deleting record %s\n", key.dptr )); - tdb_delete(idmap_tdb, key); - return 0; - } - - rid = atoi(p); - - sid_copy(&sid, &domain->sid); - sid_append_rid(&sid, rid); - - sid_to_string(keystr, &sid); - key2.dptr = keystr; - key2.dsize = strlen(keystr) + 1; - - if (tdb_store(idmap_tdb, key2, data, TDB_INSERT) != 0) { - /* not good! */ - DEBUG(0,("winbindd: convert_fn : Unable to update record %s\n", key2.dptr )); - DEBUG(0,("winbindd: convert_fn : conversion failed - idmap corrupt ?\n")); - return -1; - } - - if (tdb_store(idmap_tdb, data, key2, TDB_REPLACE) != 0) { - /* not good! */ - DEBUG(0,("winbindd: convert_fn : Unable to update record %s\n", data.dptr )); - DEBUG(0,("winbindd: convert_fn : conversion failed - idmap corrupt ?\n")); - return -1; - } - - tdb_delete(idmap_tdb, key); - - return 0; -} + BOOL ret = False; -#if 0 -/***************************************************************************** - Make a backup copy of the old idmap just to be safe.... JRA. -*****************************************************************************/ + if (!impl) { + impl = get_impl(lp_winbind_backend()); + } -static BOOL backup_old_idmap(const char *idmap_name) -{ - pstring new_name; - int outfd = -1; - SMB_OFF_T size; - struct stat st; - - pstrcpy(new_name, idmap_name); - pstrcat(new_name, ".bak"); - - DEBUG(10,("backup_old_idmap: backing up %s to %s before upgrade.\n", - idmap_name, new_name )); - - if (tdb_lockall(idmap_tdb) == -1) { - DEBUG(10,("backup_old_idmap: failed to lock %s. Error %s\n", - idmap_name, tdb_errorstr(idmap_tdb) )); - return False; - } - if ((outfd = open(new_name, O_CREAT|O_EXCL|O_RDWR, 0600)) == -1) { - DEBUG(10,("backup_old_idmap: failed to open %s. Error %s\n", - new_name, strerror(errno) )); - goto fail; - } - - if (fstat(idmap_tdb->fd, &st) == -1) { - DEBUG(10,("backup_old_idmap: failed to fstat %s. Error %s\n", - idmap_name, strerror(errno) )); - goto fail; - } - - size = (SMB_OFF_T)st.st_size; - - if (transfer_file(idmap_tdb->fd, outfd, size) != size ) { - DEBUG(10,("backup_old_idmap: failed to copy %s. Error %s\n", - idmap_name, strerror(errno) )); - goto fail; - } - - if (close(outfd) == -1) { - DEBUG(10,("backup_old_idmap: failed to close %s. Error %s\n", - idmap_name, strerror(errno) )); - outfd = -1; - goto fail; - } - tdb_unlockall(idmap_tdb); - return True; - -fail: - - if (outfd != -1) - close(outfd); - tdb_unlockall(idmap_tdb); - return False; -} -#endif - -/***************************************************************************** - Convert the idmap database from an older version. -*****************************************************************************/ + if (impl) { + ret = impl->get_rid_from_gid(gid, group_rid, domain); + } else { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } -static BOOL idmap_convert(const char *idmap_name) -{ - int32 vers = tdb_fetch_int32(idmap_tdb, "IDMAP_VERSION"); - BOOL bigendianheader = (idmap_tdb->flags & TDB_BIGENDIAN) ? True : False; - - if (vers == IDMAP_VERSION) - return True; - -#if 0 - /* Make a backup copy before doing anything else.... */ - if (!backup_old_idmap(idmap_name)) - return False; -#endif - - 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 = server_state.uid_low; - - if (tdb_store_int32(idmap_tdb, HWM_USER, wm) == -1) { - DEBUG(0, ("idmap_convert: Unable to byteswap user hwm in idmap database\n")); - return False; - } - - wm = tdb_fetch_int32(idmap_tdb, HWM_GROUP); - if (wm != -1) { - wm = IREV(wm); - } else - wm = server_state.gid_low; - - if (tdb_store_int32(idmap_tdb, HWM_GROUP, wm) == -1) { - DEBUG(0, ("idmap_convert: Unable to byteswap group hwm in idmap database\n")); - return False; - } - } - - /* the old format stored as DOMAIN/rid - now we store the SID direct */ - tdb_traverse(idmap_tdb, convert_fn, NULL); - - if (tdb_store_int32(idmap_tdb, "IDMAP_VERSION", IDMAP_VERSION) == -1) { - DEBUG(0, ("idmap_convert: Unable to byteswap group hwm in idmap database\n")); - return False; - } - - return True; -} - -/***************************************************************************** - Initialise idmap database. -*****************************************************************************/ - -BOOL winbindd_idmap_init(void) -{ - /* Open tdb cache */ - - if (!(idmap_tdb = tdb_open_log(lock_path("winbindd_idmap.tdb"), 0, - TDB_DEFAULT, O_RDWR | O_CREAT, 0600))) { - DEBUG(0, ("winbindd_idmap_init: Unable to open idmap database\n")); - return False; - } - - /* possibly convert from an earlier version */ - if (!idmap_convert(lock_path("winbindd_idmap.tdb"))) { - DEBUG(0, ("winbindd_idmap_init: Unable to open idmap database\n")); - return False; - } - - /* Create high water marks for group and user id */ - - if (tdb_fetch_int32(idmap_tdb, HWM_USER) == -1) { - if (tdb_store_int32(idmap_tdb, HWM_USER, server_state.uid_low) == -1) { - DEBUG(0, ("winbindd_idmap_init: Unable to initialise user hwm in idmap database\n")); - return False; - } - } - - if (tdb_fetch_int32(idmap_tdb, HWM_GROUP) == -1) { - if (tdb_store_int32(idmap_tdb, HWM_GROUP, server_state.gid_low) == -1) { - DEBUG(0, ("winbindd_idmap_init: Unable to initialise group hwm in idmap database\n")); - return False; - } - } - - return True; + return ret; } +/* Close backend */ BOOL winbindd_idmap_close(void) { - if (idmap_tdb) - return (tdb_close(idmap_tdb) == 0); - return True; -} + BOOL ret = False; -/* Dump status information to log file. Display different stuff based on - the debug level: + if (!impl) { + impl = get_impl(lp_winbind_backend()); + } - Debug Level Information Displayed - ================================================================= - 0 Percentage of [ug]id range allocated - 0 High water marks (next allocated ids) -*/ + if (impl) { + ret = impl->close(); + } else { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } -#define DUMP_INFO 0 + return ret; +} +/* Dump backend status */ void winbindd_idmap_status(void) { - int user_hwm, group_hwm; - - DEBUG(0, ("winbindd idmap status:\n")); - - /* Get current high water marks */ - - if ((user_hwm = tdb_fetch_int32(idmap_tdb, HWM_USER)) == -1) { - DEBUG(DUMP_INFO, ("\tCould not get userid high water mark!\n")); - } - - if ((group_hwm = tdb_fetch_int32(idmap_tdb, HWM_GROUP)) == -1) { - DEBUG(DUMP_INFO, ("\tCould not get groupid high water mark!\n")); - } - - /* Display next ids to allocate */ - - if (user_hwm != -1) { - DEBUG(DUMP_INFO, ("\tNext userid to allocate is %d\n", user_hwm)); - } - - if (group_hwm != -1) { - DEBUG(DUMP_INFO, ("\tNext groupid to allocate is %d\n", group_hwm)); - } - - /* Display percentage of id range already allocated. */ - - if (user_hwm != -1) { - int num_users = user_hwm - server_state.uid_low; - int total_users = server_state.uid_high - server_state.uid_low; - - DEBUG(DUMP_INFO, ("\tUser id range is %d%% full (%d of %d)\n", - num_users * 100 / total_users, num_users, - total_users)); - } - - if (group_hwm != -1) { - int num_groups = group_hwm - server_state.gid_low; - int total_groups = server_state.gid_high - server_state.gid_low; - - DEBUG(DUMP_INFO, ("\tGroup id range is %d%% full (%d of %d)\n", - num_groups * 100 / total_groups, num_groups, - total_groups)); - } - - /* Display complete mapping of users and groups to rids */ + if (!impl) { + impl = get_impl(lp_winbind_backend()); + } + + if (impl) { + impl->status(); + } else { + DEBUG(0, ("winbindd_idmap_init: could not load backend '%s'\n", + lp_winbind_backend())); + } } + diff --git a/source3/nsswitch/winbindd_idmap_tdb.c b/source3/nsswitch/winbindd_idmap_tdb.c new file mode 100644 index 0000000000..f27c3c1b5f --- /dev/null +++ b/source3/nsswitch/winbindd_idmap_tdb.c @@ -0,0 +1,519 @@ +/* + Unix SMB/CIFS implementation. + + Winbind daemon - user related function + + Copyright (C) Tim Potter 2000 + Copyright (C) Anthony Liguori 2003 + + 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 2 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "winbindd.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_WINBIND + +/* High water mark keys */ +#define HWM_GROUP "GROUP HWM" +#define HWM_USER "USER HWM" + +/* idmap version determines auto-conversion */ +#define IDMAP_VERSION 2 + +/* Globals */ +static TDB_CONTEXT *idmap_tdb; + +/* convert one record to the new format */ +static int tdb_convert_fn(TDB_CONTEXT * tdb, TDB_DATA key, TDB_DATA data, + void *ignored) +{ + struct winbindd_domain *domain; + char *p; + DOM_SID sid; + uint32 rid; + fstring keystr; + fstring dom_name; + TDB_DATA key2; + + p = strchr(key.dptr, '/'); + if (!p) + return 0; + + *p = 0; + fstrcpy(dom_name, key.dptr); + *p++ = '/'; + + domain = find_domain_from_name(dom_name); + if (!domain) { + /* We must delete the old record. */ + DEBUG(0, + ("winbindd: tdb_convert_fn : Unable to find domain %s\n", + dom_name)); + DEBUG(0, + ("winbindd: tdb_convert_fn : deleting record %s\n", + key.dptr)); + tdb_delete(idmap_tdb, key); + return 0; + } + + rid = atoi(p); + + sid_copy(&sid, &domain->sid); + sid_append_rid(&sid, rid); + + sid_to_string(keystr, &sid); + key2.dptr = keystr; + key2.dsize = strlen(keystr) + 1; + + if (tdb_store(idmap_tdb, key2, data, TDB_INSERT) != 0) { + /* not good! */ + DEBUG(0, + ("winbindd: tdb_convert_fn : Unable to update record %s\n", + key2.dptr)); + DEBUG(0, + ("winbindd: tdb_convert_fn : conversion failed - idmap corrupt ?\n")); + return -1; + } + + if (tdb_store(idmap_tdb, data, key2, TDB_REPLACE) != 0) { + /* not good! */ + DEBUG(0, + ("winbindd: tdb_convert_fn : Unable to update record %s\n", + data.dptr)); + DEBUG(0, + ("winbindd: tdb_convert_fn : conversion failed - idmap corrupt ?\n")); + return -1; + } + + tdb_delete(idmap_tdb, key); + + return 0; +} + +/***************************************************************************** + Convert the idmap database from an older version. +*****************************************************************************/ +static BOOL tdb_idmap_convert(const char *idmap_name) +{ + int32 vers = tdb_fetch_int32(idmap_tdb, "IDMAP_VERSION"); + BOOL bigendianheader = + (idmap_tdb->flags & TDB_BIGENDIAN) ? True : False; + + if (vers == IDMAP_VERSION) + return True; + + 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 = server_state.uid_low; + + if (tdb_store_int32(idmap_tdb, HWM_USER, wm) == -1) { + DEBUG(0, + ("tdb_idmap_convert: Unable to byteswap user hwm in idmap database\n")); + return False; + } + + wm = tdb_fetch_int32(idmap_tdb, HWM_GROUP); + if (wm != -1) { + wm = IREV(wm); + } else + wm = server_state.gid_low; + + if (tdb_store_int32(idmap_tdb, HWM_GROUP, wm) == -1) { + DEBUG(0, + ("tdb_idmap_convert: Unable to byteswap group hwm in idmap database\n")); + return False; + } + } + + /* the old format stored as DOMAIN/rid - now we store the SID direct */ + tdb_traverse(idmap_tdb, tdb_convert_fn, NULL); + + if (tdb_store_int32(idmap_tdb, "IDMAP_VERSION", IDMAP_VERSION) == + -1) { + DEBUG(0, + ("tdb_idmap_convert: Unable to byteswap group hwm in idmap database\n")); + return False; + } + + return True; +} + +/* Allocate either a user or group id from the pool */ +static BOOL tdb_allocate_id(uid_t * id, BOOL isgroup) +{ + int hwm; + + /* Get current high water mark */ + if ((hwm = tdb_fetch_int32(idmap_tdb, + isgroup ? HWM_GROUP : HWM_USER)) == + -1) { + return False; + } + + /* Return next available uid in list */ + if ((isgroup && (hwm > server_state.gid_high)) || + (!isgroup && (hwm > server_state.uid_high))) { + DEBUG(0, + ("winbind %sid range full!\n", isgroup ? "g" : "u")); + return False; + } + + if (id) { + *id = hwm; + } + + hwm++; + + /* Store new high water mark */ + tdb_store_int32(idmap_tdb, isgroup ? HWM_GROUP : HWM_USER, hwm); + + return True; +} + +/* Get a sid from an id */ +static BOOL tdb_get_sid_from_id(int id, DOM_SID * sid, BOOL isgroup) +{ + TDB_DATA key, data; + fstring keystr; + BOOL result = False; + + slprintf(keystr, sizeof(keystr), "%s %d", isgroup ? "GID" : "UID", + id); + + key.dptr = keystr; + key.dsize = strlen(keystr) + 1; + + data = tdb_fetch(idmap_tdb, key); + + if (data.dptr) { + result = string_to_sid(sid, data.dptr); + SAFE_FREE(data.dptr); + } + + return result; +} + +/* Get an id from a sid */ +static BOOL tdb_get_id_from_sid(DOM_SID * sid, uid_t * id, BOOL isgroup) +{ + TDB_DATA data, key; + fstring keystr; + BOOL result = False; + + /* Check if sid is present in database */ + sid_to_string(keystr, sid); + + key.dptr = keystr; + key.dsize = strlen(keystr) + 1; + + data = tdb_fetch(idmap_tdb, key); + + if (data.dptr) { + fstring scanstr; + int the_id; + + /* Parse and return existing uid */ + fstrcpy(scanstr, isgroup ? "GID" : "UID"); + fstrcat(scanstr, " %d"); + + if (sscanf(data.dptr, scanstr, &the_id) == 1) { + /* Store uid */ + if (id) { + *id = the_id; + } + + result = True; + } + + SAFE_FREE(data.dptr); + } else { + + /* Allocate a new id for this sid */ + if (id && tdb_allocate_id(id, isgroup)) { + fstring keystr2; + + /* Store new id */ + slprintf(keystr2, sizeof(keystr2), "%s %d", + isgroup ? "GID" : "UID", *id); + + data.dptr = keystr2; + data.dsize = strlen(keystr2) + 1; + + tdb_store(idmap_tdb, key, data, TDB_REPLACE); + tdb_store(idmap_tdb, data, key, TDB_REPLACE); + + result = True; + } + } + + return result; +} + +/***************************************************************************** + Initialise idmap database. +*****************************************************************************/ +static BOOL tdb_idmap_init(void) +{ + /* Open tdb cache */ + if (!(idmap_tdb = tdb_open_log(lock_path("winbindd_idmap.tdb"), 0, + TDB_DEFAULT, O_RDWR | O_CREAT, + 0600))) { + DEBUG(0, + ("winbindd_idmap_init: Unable to open idmap database\n")); + return False; + } + + /* possibly convert from an earlier version */ + if (!tdb_idmap_convert(lock_path("winbindd_idmap.tdb"))) { + DEBUG(0, + ("winbindd_idmap_init: Unable to open idmap database\n")); + return False; + } + + /* Create high water marks for group and user id */ + if (tdb_fetch_int32(idmap_tdb, HWM_USER) == -1) { + if (tdb_store_int32 + (idmap_tdb, HWM_USER, server_state.uid_low) == -1) { + DEBUG(0, + ("winbindd_idmap_init: Unable to initialise user hwm in idmap database\n")); + return False; + } + } + + if (tdb_fetch_int32(idmap_tdb, HWM_GROUP) == -1) { + if (tdb_store_int32 + (idmap_tdb, HWM_GROUP, server_state.gid_low) == -1) { + DEBUG(0, + ("winbindd_idmap_init: Unable to initialise group hwm in idmap database\n")); + return False; + } + } + + return True; +} + +/* Get a sid from a uid */ +static BOOL tdb_get_sid_from_uid(uid_t uid, DOM_SID * sid) +{ + return tdb_get_sid_from_id((int) uid, sid, False); +} + +/* Get a sid from a gid */ +static BOOL tdb_get_sid_from_gid(gid_t gid, DOM_SID * sid) +{ + return tdb_get_sid_from_id((int) gid, sid, True); +} + +/* Get a uid from a sid */ +static BOOL tdb_get_uid_from_sid(DOM_SID * sid, uid_t * uid) +{ + return tdb_get_id_from_sid(sid, uid, False); +} + +/* Get a gid from a group sid */ +static BOOL tdb_get_gid_from_sid(DOM_SID * sid, gid_t * gid) +{ + return tdb_get_id_from_sid(sid, gid, True); +} + +/* Get a uid from a user rid */ +static BOOL tdb_get_uid_from_rid(const char *dom_name, uint32 rid, + uid_t * uid) +{ + struct winbindd_domain *domain; + DOM_SID sid; + + if (!(domain = find_domain_from_name(dom_name))) { + return False; + } + + sid_copy(&sid, &domain->sid); + sid_append_rid(&sid, rid); + + return tdb_get_id_from_sid(&sid, uid, False); +} + +/* Get a gid from a group rid */ +static BOOL tdb_get_gid_from_rid(const char *dom_name, uint32 rid, + gid_t * gid) +{ + struct winbindd_domain *domain; + DOM_SID sid; + + if (!(domain = find_domain_from_name(dom_name))) { + return False; + } + + sid_copy(&sid, &domain->sid); + sid_append_rid(&sid, rid); + + return tdb_get_id_from_sid(&sid, gid, True); +} + +/* Get a user rid from a uid */ +static BOOL tdb_get_rid_from_uid(uid_t uid, uint32 * user_rid, + struct winbindd_domain **domain) +{ + DOM_SID sid; + + if (!tdb_get_sid_from_id((int) uid, &sid, False)) { + return False; + } + + *domain = find_domain_from_sid(&sid); + if (!*domain) + return False; + + sid_split_rid(&sid, user_rid); + + return True; +} + +/* Get a group rid from a gid */ +static BOOL tdb_get_rid_from_gid(gid_t gid, uint32 * group_rid, + struct winbindd_domain **domain) +{ + DOM_SID sid; + + if (!tdb_get_sid_from_id((int) gid, &sid, True)) { + return False; + } + + *domain = find_domain_from_sid(&sid); + if (!*domain) + return False; + + sid_split_rid(&sid, group_rid); + + return True; +} + +/* Close the tdb */ +static BOOL tdb_idmap_close(void) +{ + if (idmap_tdb) + return (tdb_close(idmap_tdb) == 0); + return True; +} + + +/* Dump status information to log file. Display different stuff based on + the debug level: + + Debug Level Information Displayed + ================================================================= + 0 Percentage of [ug]id range allocated + 0 High water marks (next allocated ids) +*/ + +#define DUMP_INFO 0 + +static void tdb_idmap_status(void) +{ + int user_hwm, group_hwm; + + DEBUG(0, ("winbindd idmap status:\n")); + + /* Get current high water marks */ + + if ((user_hwm = tdb_fetch_int32(idmap_tdb, HWM_USER)) == -1) { + DEBUG(DUMP_INFO, + ("\tCould not get userid high water mark!\n")); + } + + if ((group_hwm = tdb_fetch_int32(idmap_tdb, HWM_GROUP)) == -1) { + DEBUG(DUMP_INFO, + ("\tCould not get groupid high water mark!\n")); + } + + /* Display next ids to allocate */ + + if (user_hwm != -1) { + DEBUG(DUMP_INFO, + ("\tNext userid to allocate is %d\n", user_hwm)); + } + + if (group_hwm != -1) { + DEBUG(DUMP_INFO, + ("\tNext groupid to allocate is %d\n", group_hwm)); + } + + /* Display percentage of id range already allocated. */ + + if (user_hwm != -1) { + int num_users = user_hwm - server_state.uid_low; + int total_users = + server_state.uid_high - server_state.uid_low; + + DEBUG(DUMP_INFO, + ("\tUser id range is %d%% full (%d of %d)\n", + num_users * 100 / total_users, num_users, + total_users)); + } + + if (group_hwm != -1) { + int num_groups = group_hwm - server_state.gid_low; + int total_groups = + server_state.gid_high - server_state.gid_low; + + DEBUG(DUMP_INFO, + ("\tGroup id range is %d%% full (%d of %d)\n", + num_groups * 100 / total_groups, num_groups, + total_groups)); + } + + /* Display complete mapping of users and groups to rids */ +} + +struct idmap_methods tdb_idmap_methods = { + tdb_idmap_init, + + tdb_get_sid_from_uid, + tdb_get_sid_from_gid, + + tdb_get_uid_from_sid, + tdb_get_gid_from_sid, + + tdb_get_rid_from_uid, + tdb_get_rid_from_gid, + + tdb_get_uid_from_rid, + tdb_get_gid_from_rid, + + tdb_idmap_close, + + tdb_idmap_status +}; + +BOOL winbind_idmap_reg_tdb(struct idmap_methods **meth) +{ + *meth = &tdb_idmap_methods; + + return True; +} diff --git a/source3/param/loadparm.c b/source3/param/loadparm.c index 398ae88b97..01b6980c8f 100644 --- a/source3/param/loadparm.c +++ b/source3/param/loadparm.c @@ -8,6 +8,7 @@ Copyright (C) Simo Sorce 2001 Copyright (C) Alexander Bokovoy 2002 Copyright (C) Stefan (metze) Metzmacher 2002 + Copyright (C) Anthony Liguori 2003 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 @@ -171,6 +172,7 @@ typedef struct BOOL bWinbindEnumUsers; BOOL bWinbindEnumGroups; BOOL bWinbindUseDefaultDomain; + char *szWinbindBackend; char *szAddShareCommand; char *szChangeShareCommand; char *szDeleteShareCommand; @@ -1118,6 +1120,7 @@ static struct parm_struct parm_table[] = { {"winbind enum users", P_BOOL, P_GLOBAL, &Globals.bWinbindEnumUsers, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER}, {"winbind enum groups", P_BOOL, P_GLOBAL, &Globals.bWinbindEnumGroups, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER}, {"winbind use default domain", P_BOOL, P_GLOBAL, &Globals.bWinbindUseDefaultDomain, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER}, + {"winbind backend", P_STRING, P_GLOBAL, &Globals.szWinbindBackend, NULL, NULL, FLAG_ADVANCED | FLAG_DEVELOPER}, {NULL, P_BOOL, P_NONE, NULL, NULL, NULL, 0} }; @@ -1458,6 +1461,8 @@ static void init_globals(void) Globals.bWinbindEnumGroups = True; Globals.bWinbindUseDefaultDomain = False; + string_set(&Globals.szWinbindBackend, "tdb"); + Globals.name_cache_timeout = 660; /* In seconds */ Globals.bUseSpnego = True; @@ -1630,6 +1635,7 @@ FN_GLOBAL_STRING(lp_acl_compatibility, &Globals.szAclCompat) FN_GLOBAL_BOOL(lp_winbind_enum_users, &Globals.bWinbindEnumUsers) FN_GLOBAL_BOOL(lp_winbind_enum_groups, &Globals.bWinbindEnumGroups) FN_GLOBAL_BOOL(lp_winbind_use_default_domain, &Globals.bWinbindUseDefaultDomain) +FN_GLOBAL_STRING(lp_winbind_backend, &Globals.szWinbindBackend) #ifdef WITH_LDAP_SAMCONFIG FN_GLOBAL_STRING(lp_ldap_server, &Globals.szLdapServer) |