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Diffstat (limited to 'libcli/security/util_sid.c')
| -rw-r--r-- | libcli/security/util_sid.c | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/libcli/security/util_sid.c b/libcli/security/util_sid.c new file mode 100644 index 0000000000..9ba28ebc75 --- /dev/null +++ b/libcli/security/util_sid.c @@ -0,0 +1,371 @@ +/* + 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"}, + + {(enum lsa_SidType)0, NULL} +}; + +const char *sid_type_lookup(uint32_t sid_type) +{ + int i = 0; + + /* Look through list */ + while(sid_name_type[i].sid_type != 0) { + if (sid_name_type[i].sid_type == sid_type) + return sid_name_type[i].string; + i++; + } + + /* 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--; + *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 to a struct dom_sid. +*****************************************************************/ + +bool sid_parse(const char *inbuf, size_t len, struct dom_sid *sid) +{ + enum ndr_err_code ndr_err; + DATA_BLOB in = data_blob_const(inbuf, len); + 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; +} + +/***************************************************************** + 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) +{ + size_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, size_t *num) +{ + struct dom_sid *sid_list = *sids; + size_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); +} |