diff options
| -rw-r--r-- | source3/lib/privileges.c | 76 |
1 files changed, 48 insertions, 28 deletions
diff --git a/source3/lib/privileges.c b/source3/lib/privileges.c index f8ade863df4..13d80ca9905 100644 --- a/source3/lib/privileges.c +++ b/source3/lib/privileges.c @@ -37,6 +37,35 @@ typedef struct { SID_LIST sids; } PRIV_SID_LIST; +/* + interpret an old style SE_PRIV structure + */ +static uint64_t map_old_SE_PRIV(unsigned char *dptr) +{ + uint32_t *old_masks = (uint32_t *)dptr; + /* + * the old privileges code only ever used up to 0x800, except + * for a special case of 'SE_ALL_PRIVS' which was 0xFFFFFFFF + */ + if (old_masks[0] == 0xFFFFFFFF) { + /* they set all privileges */ + return SE_ALL_PRIVS; + } + + /* the old code used the machine byte order, but we don't know + * the byte order of the machine that wrote it. However we can + * tell what byte order it was by taking advantage of the fact + * that it only ever use up to 0x800 + */ + if (dptr[0] || dptr[1]) { + /* it was little endian */ + return IVAL(dptr, 0); + } + + /* it was either zero or big-endian */ + return RIVAL(dptr, 0); +} + static bool get_privileges( const struct dom_sid *sid, uint64_t *mask ) { @@ -66,19 +95,18 @@ static bool get_privileges( const struct dom_sid *sid, uint64_t *mask ) } if (data.dsize == 4*4) { - DEBUG(3, ("get_privileges: Should not have obtained old-style privileges record for SID " - "[%s]\n", sid_string_dbg(sid))); - return False; - } + /* it's an old style SE_PRIV structure. */ + *mask = map_old_SE_PRIV(data.dptr); + } else { + if (data.dsize != sizeof( uint64_t ) ) { + DEBUG(3, ("get_privileges: Invalid privileges record assigned to SID " + "[%s]\n", sid_string_dbg(sid))); + return False; + } - if (data.dsize != sizeof( uint64_t ) ) { - DEBUG(3, ("get_privileges: Invalid privileges record assigned to SID " - "[%s]\n", sid_string_dbg(sid))); - return False; + *mask = BVAL(data.dptr, 0); } - *mask = BVAL(data.dptr, 0); - TALLOC_FREE(data.dptr); return True; @@ -113,8 +141,8 @@ static bool set_privileges( const struct dom_sid *sid, uint64_t *mask ) /* This writes the 64 bit bitmask out in little endian format */ SBVAL(privbuf,0,*mask); - data.dptr = (uint8 *)mask; - data.dsize = sizeof(uint64_t); + data.dptr = privbuf; + data.dsize = sizeof(privbuf); return NT_STATUS_IS_OK(dbwrap_store_bystring(db, keystr, data, TDB_REPLACE)); @@ -178,11 +206,6 @@ static int priv_traverse_fn(struct db_record *rec, void *state) struct dom_sid sid; fstring sid_string; - /* easy check first */ - - if (rec->value.dsize != sizeof(uint64_t) ) - return 0; - /* check we have a PRIV_+SID entry */ if ( strncmp((char *)rec->key.dptr, PRIVPREFIX, prefixlen) != 0) @@ -196,19 +219,16 @@ static int priv_traverse_fn(struct db_record *rec, void *state) uint64_t mask; if (rec->value.dsize == 4*4) { - DEBUG(3, ("get_privileges: Should not have obtained old-style privileges record for SID " - "[%s]\n", sid_string)); - return 0; - } - - if (rec->value.dsize != sizeof( uint64_t ) ) { - DEBUG(3, ("get_privileges: Invalid privileges record assigned to SID " - "[%s]\n", sid_string)); - return 0; + mask = map_old_SE_PRIV(rec->value.dptr); + } else { + if (rec->value.dsize != sizeof( uint64_t ) ) { + DEBUG(3, ("get_privileges: Invalid privileges record assigned to SID " + "[%s]\n", sid_string)); + return 0; + } + mask = BVAL(rec->value.dptr, 0); } - mask = BVAL(rec->value.dptr, 0); - /* if the SID does not have the specified privilege then just return */ |