/* Unix SMB/CIFS implementation. Samba utility functions Copyright (C) Andrew Tridgell 1992-1998 Copyright (C) Luke Kenneth Caseson Leighton 1998-1999 Copyright (C) Jeremy Allison 1999 Copyright (C) Stefan (metze) Metzmacher 2002 Copyright (C) Simo Sorce 2002 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2005 Copyright (C) Andrew Bartlett 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 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 "../librpc/gen_ndr/ndr_security.h" #include "../librpc/gen_ndr/netlogon.h" #include "../libcli/security/security.h" /* * Some useful sids, more well known sids can be found at * http://support.microsoft.com/kb/243330/EN-US/ */ const struct dom_sid global_sid_World_Domain = /* Everyone domain */ { 1, 0, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_World = /* Everyone */ { 1, 1, {0,0,0,0,0,1}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Creator_Owner_Domain = /* Creator Owner domain */ { 1, 0, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_NT_Authority = /* NT Authority */ { 1, 0, {0,0,0,0,0,5}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_System = /* System */ { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_NULL = /* NULL sid */ { 1, 1, {0,0,0,0,0,0}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Authenticated_Users = /* All authenticated rids */ { 1, 1, {0,0,0,0,0,5}, {11,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; #if 0 /* for documentation */ const struct dom_sid global_sid_Restriced = /* Restriced Code */ { 1, 1, {0,0,0,0,0,5}, {12,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; #endif const struct dom_sid global_sid_Network = /* Network rids */ { 1, 1, {0,0,0,0,0,5}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Creator_Owner = /* Creator Owner */ { 1, 1, {0,0,0,0,0,3}, {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Creator_Group = /* Creator Group */ { 1, 1, {0,0,0,0,0,3}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Anonymous = /* Anonymous login */ { 1, 1, {0,0,0,0,0,5}, {7,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Enterprise_DCs = /* Enterprise DCs */ { 1, 1, {0,0,0,0,0,5}, {9,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin = /* Local well-known domain */ { 1, 1, {0,0,0,0,0,5}, {32,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Administrators = /* Builtin administrators */ { 1, 2, {0,0,0,0,0,5}, {32,544,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Users = /* Builtin users */ { 1, 2, {0,0,0,0,0,5}, {32,545,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Guests = /* Builtin guest users */ { 1, 2, {0,0,0,0,0,5}, {32,546,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Power_Users = /* Builtin power users */ { 1, 2, {0,0,0,0,0,5}, {32,547,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Account_Operators = /* Builtin account operators */ { 1, 2, {0,0,0,0,0,5}, {32,548,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Server_Operators = /* Builtin server operators */ { 1, 2, {0,0,0,0,0,5}, {32,549,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Print_Operators = /* Builtin print operators */ { 1, 2, {0,0,0,0,0,5}, {32,550,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Backup_Operators = /* Builtin backup operators */ { 1, 2, {0,0,0,0,0,5}, {32,551,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_Replicator = /* Builtin replicator */ { 1, 2, {0,0,0,0,0,5}, {32,552,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Builtin_PreWin2kAccess = /* Builtin pre win2k access */ { 1, 2, {0,0,0,0,0,5}, {32,554,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Unix_Users = /* Unmapped Unix users */ { 1, 1, {0,0,0,0,0,22}, {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; const struct dom_sid global_sid_Unix_Groups = /* Unmapped Unix groups */ { 1, 1, {0,0,0,0,0,22}, {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}; /* Unused, left here for documentary purposes */ #if 0 #define SECURITY_NULL_SID_AUTHORITY 0 #define SECURITY_WORLD_SID_AUTHORITY 1 #define SECURITY_LOCAL_SID_AUTHORITY 2 #define SECURITY_CREATOR_SID_AUTHORITY 3 #define SECURITY_NT_AUTHORITY 5 #endif static struct dom_sid system_sid_array[1] = { { 1, 1, {0,0,0,0,0,5}, {18,0,0,0,0,0,0,0,0,0,0,0,0,0,0}} }; static const struct security_token system_token = { .num_sids = ARRAY_SIZE(system_sid_array), .sids = system_sid_array, .privilege_mask = SE_ALL_PRIVS }; /**************************************************************************** Lookup string names for SID types. ****************************************************************************/ static const struct { enum lsa_SidType sid_type; const char *string; } sid_name_type[] = { {SID_NAME_USE_NONE, "None"}, {SID_NAME_USER, "User"}, {SID_NAME_DOM_GRP, "Domain Group"}, {SID_NAME_DOMAIN, "Domain"}, {SID_NAME_ALIAS, "Local Group"}, {SID_NAME_WKN_GRP, "Well-known Group"}, {SID_NAME_DELETED, "Deleted Account"}, {SID_NAME_INVALID, "Invalid Account"}, {SID_NAME_UNKNOWN, "UNKNOWN"}, {SID_NAME_COMPUTER, "Computer"} }; const char *sid_type_lookup(uint32_t sid_type) { int i; /* Look through list */ for (i=0; i < ARRAY_SIZE(sid_name_type); i++) { if (sid_name_type[i].sid_type == sid_type) { return sid_name_type[i].string; } } /* Default return */ return "SID *TYPE* is INVALID"; } /************************************************************************** Create the SYSTEM token. ***************************************************************************/ const struct security_token *get_system_token(void) { return &system_token; } bool sid_compose(struct dom_sid *dst, const struct dom_sid *domain_sid, uint32_t rid) { sid_copy(dst, domain_sid); return sid_append_rid(dst, rid); } /***************************************************************** Removes the last rid from the end of a sid *****************************************************************/ bool sid_split_rid(struct dom_sid *sid, uint32_t *rid) { if (sid->num_auths > 0) { sid->num_auths--; if (rid != NULL) { *rid = sid->sub_auths[sid->num_auths]; } return true; } return false; } /***************************************************************** Return the last rid from the end of a sid *****************************************************************/ bool sid_peek_rid(const struct dom_sid *sid, uint32_t *rid) { if (!sid || !rid) return false; if (sid->num_auths > 0) { *rid = sid->sub_auths[sid->num_auths - 1]; return true; } return false; } /***************************************************************** Return the last rid from the end of a sid and check the sid against the exp_dom_sid *****************************************************************/ bool sid_peek_check_rid(const struct dom_sid *exp_dom_sid, const struct dom_sid *sid, uint32_t *rid) { if (!exp_dom_sid || !sid || !rid) return false; if (sid->num_auths != (exp_dom_sid->num_auths+1)) { return false; } if (sid_compare_domain(exp_dom_sid, sid)!=0){ *rid=(-1); return false; } return sid_peek_rid(sid, rid); } /***************************************************************** Copies a sid *****************************************************************/ void sid_copy(struct dom_sid *dst, const struct dom_sid *src) { int i; ZERO_STRUCTP(dst); dst->sid_rev_num = src->sid_rev_num; dst->num_auths = src->num_auths; memcpy(&dst->id_auth[0], &src->id_auth[0], sizeof(src->id_auth)); for (i = 0; i < src->num_auths; i++) dst->sub_auths[i] = src->sub_auths[i]; } /***************************************************************** Parse a on-the-wire SID (in a DATA_BLOB) to a struct dom_sid. *****************************************************************/ bool sid_blob_parse(DATA_BLOB in, struct dom_sid *sid) { enum ndr_err_code ndr_err; ndr_err = ndr_pull_struct_blob_all(&in, NULL, sid, (ndr_pull_flags_fn_t)ndr_pull_dom_sid); if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { return false; } return true; } /***************************************************************** Parse a on-the-wire SID to a struct dom_sid. *****************************************************************/ bool sid_parse(const char *inbuf, size_t len, struct dom_sid *sid) { DATA_BLOB in = data_blob_const(inbuf, len); return sid_blob_parse(in, sid); } /***************************************************************** See if 2 SIDs are in the same domain this just compares the leading sub-auths *****************************************************************/ int sid_compare_domain(const struct dom_sid *sid1, const struct dom_sid *sid2) { int n, i; n = MIN(sid1->num_auths, sid2->num_auths); for (i = n-1; i >= 0; --i) if (sid1->sub_auths[i] != sid2->sub_auths[i]) return sid1->sub_auths[i] - sid2->sub_auths[i]; return dom_sid_compare_auth(sid1, sid2); } /***************************************************************** Compare two sids. *****************************************************************/ bool sid_equal(const struct dom_sid *sid1, const struct dom_sid *sid2) { return dom_sid_compare(sid1, sid2) == 0; } /******************************************************************** Add SID to an array SIDs ********************************************************************/ NTSTATUS add_sid_to_array(TALLOC_CTX *mem_ctx, const struct dom_sid *sid, struct dom_sid **sids, uint32_t *num) { *sids = talloc_realloc(mem_ctx, *sids, struct dom_sid, (*num)+1); if (*sids == NULL) { *num = 0; return NT_STATUS_NO_MEMORY; } sid_copy(&((*sids)[*num]), sid); *num += 1; return NT_STATUS_OK; } /******************************************************************** Add SID to an array SIDs ensuring that it is not already there ********************************************************************/ NTSTATUS add_sid_to_array_unique(TALLOC_CTX *mem_ctx, const struct dom_sid *sid, struct dom_sid **sids, uint32_t *num_sids) { uint32_t i; for (i=0; i<(*num_sids); i++) { if (dom_sid_compare(sid, &(*sids)[i]) == 0) return NT_STATUS_OK; } return add_sid_to_array(mem_ctx, sid, sids, num_sids); } /******************************************************************** Remove SID from an array ********************************************************************/ void del_sid_from_array(const struct dom_sid *sid, struct dom_sid **sids, uint32_t *num) { struct dom_sid *sid_list = *sids; uint32_t i; for ( i=0; i<*num; i++ ) { /* if we find the SID, then decrement the count and break out of the loop */ if ( sid_equal(sid, &sid_list[i]) ) { *num -= 1; break; } } /* This loop will copy the remainder of the array if i < num of sids ni the array */ for ( ; i<*num; i++ ) sid_copy( &sid_list[i], &sid_list[i+1] ); return; } bool add_rid_to_array_unique(TALLOC_CTX *mem_ctx, uint32_t rid, uint32_t **pp_rids, size_t *p_num) { size_t i; for (i=0; i<*p_num; i++) { if ((*pp_rids)[i] == rid) return true; } *pp_rids = talloc_realloc(mem_ctx, *pp_rids, uint32_t, *p_num+1); if (*pp_rids == NULL) { *p_num = 0; return false; } (*pp_rids)[*p_num] = rid; *p_num += 1; return true; } bool is_null_sid(const struct dom_sid *sid) { static const struct dom_sid null_sid = {0}; return sid_equal(sid, &null_sid); }