diff options
Diffstat (limited to 'source3/auth/auth_util.c')
| -rw-r--r-- | source3/auth/auth_util.c | 432 |
1 files changed, 0 insertions, 432 deletions
diff --git a/source3/auth/auth_util.c b/source3/auth/auth_util.c index 7891ce1599..0de3bf2325 100644 --- a/source3/auth/auth_util.c +++ b/source3/auth/auth_util.c @@ -27,12 +27,6 @@ #undef DBGC_CLASS #define DBGC_CLASS DBGC_AUTH -static struct nt_user_token *create_local_nt_token(TALLOC_CTX *mem_ctx, - const DOM_SID *user_sid, - BOOL is_guest, - int num_groupsids, - const DOM_SID *groupsids); - /**************************************************************************** Create a UNIX user on demand. ****************************************************************************/ @@ -481,38 +475,6 @@ void debug_unix_user_token(int dbg_class, int dbg_lev, uid_t uid, gid_t gid, (long int)groups[i])); } -/****************************************************************************** - Create a token for the root user to be used internally by smbd. - This is similar to running under the context of the LOCAL_SYSTEM account - in Windows. This is a read-only token. Do not modify it or free() it. - Create a copy if your need to change it. -******************************************************************************/ - -NT_USER_TOKEN *get_root_nt_token( void ) -{ - static NT_USER_TOKEN *token = NULL; - DOM_SID u_sid, g_sid; - struct passwd *pw; - - if ( token ) - return token; - - if ( !(pw = sys_getpwnam( "root" )) ) { - DEBUG(0,("get_root_nt_token: getpwnam\"root\") failed!\n")); - return NULL; - } - - /* get the user and primary group SIDs; although the - BUILTIN\Administrators SId is really the one that matters here */ - - uid_to_sid(&u_sid, pw->pw_uid); - gid_to_sid(&g_sid, pw->pw_gid); - - token = create_local_nt_token(NULL, &u_sid, False, - 1, &global_sid_Builtin_Administrators); - return token; -} - static int server_info_dtor(auth_serversupplied_info *server_info) { TALLOC_FREE(server_info->sam_account); @@ -631,53 +593,6 @@ NTSTATUS make_server_info_sam(auth_serversupplied_info **server_info, return NT_STATUS_OK; } -/* - * Add alias SIDs from memberships within the partially created token SID list - */ - -static NTSTATUS add_aliases(const DOM_SID *domain_sid, - struct nt_user_token *token) -{ - uint32 *aliases; - size_t i, num_aliases; - NTSTATUS status; - TALLOC_CTX *tmp_ctx; - - if (!(tmp_ctx = talloc_init("add_aliases"))) { - return NT_STATUS_NO_MEMORY; - } - - aliases = NULL; - num_aliases = 0; - - status = pdb_enum_alias_memberships(tmp_ctx, domain_sid, - token->user_sids, - token->num_sids, - &aliases, &num_aliases); - - if (!NT_STATUS_IS_OK(status)) { - DEBUG(10, ("pdb_enum_alias_memberships failed: %s\n", - nt_errstr(status))); - TALLOC_FREE(tmp_ctx); - return status; - } - - for (i=0; i<num_aliases; i++) { - DOM_SID alias_sid; - sid_compose(&alias_sid, domain_sid, aliases[i]); - if (!add_sid_to_array_unique(token, &alias_sid, - &token->user_sids, - &token->num_sids)) { - DEBUG(0, ("add_sid_to_array failed\n")); - TALLOC_FREE(tmp_ctx); - return NT_STATUS_NO_MEMORY; - } - } - - TALLOC_FREE(tmp_ctx); - return NT_STATUS_OK; -} - static NTSTATUS log_nt_token(TALLOC_CTX *tmp_ctx, NT_USER_TOKEN *token) { char *command; @@ -714,270 +629,6 @@ static NTSTATUS log_nt_token(TALLOC_CTX *tmp_ctx, NT_USER_TOKEN *token) return NT_STATUS_OK; } -/******************************************************************* -*******************************************************************/ - -static NTSTATUS add_builtin_administrators( struct nt_user_token *token ) -{ - DOM_SID domadm; - - /* nothing to do if we aren't in a domain */ - - if ( !(IS_DC || lp_server_role()==ROLE_DOMAIN_MEMBER) ) { - return NT_STATUS_OK; - } - - /* Find the Domain Admins SID */ - - if ( IS_DC ) { - sid_copy( &domadm, get_global_sam_sid() ); - } else { - if ( !secrets_fetch_domain_sid( lp_workgroup(), &domadm ) ) - return NT_STATUS_CANT_ACCESS_DOMAIN_INFO; - } - sid_append_rid( &domadm, DOMAIN_GROUP_RID_ADMINS ); - - /* Add Administrators if the user beloongs to Domain Admins */ - - if ( nt_token_check_sid( &domadm, token ) ) { - if (!add_sid_to_array(token, &global_sid_Builtin_Administrators, - &token->user_sids, &token->num_sids)) { - return NT_STATUS_NO_MEMORY; - } - } - - return NT_STATUS_OK; -} - -/******************************************************************* -*******************************************************************/ - -static NTSTATUS create_builtin_users( void ) -{ - NTSTATUS status; - DOM_SID dom_users; - - status = pdb_create_builtin_alias( BUILTIN_ALIAS_RID_USERS ); - if ( !NT_STATUS_IS_OK(status) ) { - DEBUG(0,("create_builtin_users: Failed to create Users\n")); - return status; - } - - /* add domain users */ - if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER)) - && secrets_fetch_domain_sid(lp_workgroup(), &dom_users)) - { - sid_append_rid(&dom_users, DOMAIN_GROUP_RID_USERS ); - status = pdb_add_aliasmem( &global_sid_Builtin_Users, &dom_users); - if ( !NT_STATUS_IS_OK(status) ) { - DEBUG(0,("create_builtin_users: Failed to add Domain Users to" - " Users\n")); - return status; - } - } - - return NT_STATUS_OK; -} - -/******************************************************************* -*******************************************************************/ - -static NTSTATUS create_builtin_administrators( void ) -{ - NTSTATUS status; - DOM_SID dom_admins, root_sid; - fstring root_name; - enum lsa_SidType type; - TALLOC_CTX *ctx; - BOOL ret; - - status = pdb_create_builtin_alias( BUILTIN_ALIAS_RID_ADMINS ); - if ( !NT_STATUS_IS_OK(status) ) { - DEBUG(0,("create_builtin_administrators: Failed to create Administrators\n")); - return status; - } - - /* add domain admins */ - if ((IS_DC || (lp_server_role() == ROLE_DOMAIN_MEMBER)) - && secrets_fetch_domain_sid(lp_workgroup(), &dom_admins)) - { - sid_append_rid(&dom_admins, DOMAIN_GROUP_RID_ADMINS); - status = pdb_add_aliasmem( &global_sid_Builtin_Administrators, &dom_admins ); - if ( !NT_STATUS_IS_OK(status) ) { - DEBUG(0,("create_builtin_administrators: Failed to add Domain Admins" - " Administrators\n")); - return status; - } - } - - /* add root */ - if ( (ctx = talloc_init("create_builtin_administrators")) == NULL ) { - return NT_STATUS_NO_MEMORY; - } - fstr_sprintf( root_name, "%s\\root", get_global_sam_name() ); - ret = lookup_name( ctx, root_name, 0, NULL, NULL, &root_sid, &type ); - TALLOC_FREE( ctx ); - - if ( ret ) { - status = pdb_add_aliasmem( &global_sid_Builtin_Administrators, &root_sid ); - if ( !NT_STATUS_IS_OK(status) ) { - DEBUG(0,("create_builtin_administrators: Failed to add root" - " Administrators\n")); - return status; - } - } - - return NT_STATUS_OK; -} - -/******************************************************************* - Create a NT token for the user, expanding local aliases -*******************************************************************/ - -static struct nt_user_token *create_local_nt_token(TALLOC_CTX *mem_ctx, - const DOM_SID *user_sid, - BOOL is_guest, - int num_groupsids, - const DOM_SID *groupsids) -{ - struct nt_user_token *result = NULL; - int i; - NTSTATUS status; - gid_t gid; - - DEBUG(10, ("Create local NT token for %s\n", sid_string_static(user_sid))); - - if (!(result = TALLOC_ZERO_P(mem_ctx, NT_USER_TOKEN))) { - DEBUG(0, ("talloc failed\n")); - return NULL; - } - - /* Add the user and primary group sid */ - - if (!add_sid_to_array(result, user_sid, - &result->user_sids, &result->num_sids)) { - return NULL; - } - - /* For guest, num_groupsids may be zero. */ - if (num_groupsids) { - if (!add_sid_to_array(result, &groupsids[0], - &result->user_sids, &result->num_sids)) { - return NULL; - } - } - - /* Add in BUILTIN sids */ - - if (!add_sid_to_array(result, &global_sid_World, - &result->user_sids, &result->num_sids)) { - return NULL; - } - if (!add_sid_to_array(result, &global_sid_Network, - &result->user_sids, &result->num_sids)) { - return NULL; - } - - if (is_guest) { - if (!add_sid_to_array(result, &global_sid_Builtin_Guests, - &result->user_sids, &result->num_sids)) { - return NULL; - } - } else { - if (!add_sid_to_array(result, &global_sid_Authenticated_Users, - &result->user_sids, &result->num_sids)) { - return NULL; - } - } - - /* Now the SIDs we got from authentication. These are the ones from - * the info3 struct or from the pdb_enum_group_memberships, depending - * on who authenticated the user. - * Note that we start the for loop at "1" here, we already added the - * first group sid as primary above. */ - - for (i=1; i<num_groupsids; i++) { - if (!add_sid_to_array_unique(result, &groupsids[i], - &result->user_sids, &result->num_sids)) { - return NULL; - } - } - - /* Deal with the BUILTIN\Administrators group. If the SID can - be resolved then assume that the add_aliasmem( S-1-5-32 ) - handled it. */ - - if ( !sid_to_gid( &global_sid_Builtin_Administrators, &gid ) ) { - /* We can only create a mapping if winbind is running - and the nested group functionality has been enabled */ - - if ( lp_winbind_nested_groups() && winbind_ping() ) { - become_root(); - status = create_builtin_administrators( ); - if ( !NT_STATUS_IS_OK(status) ) { - DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Administrators group!\n")); - /* don't fail, just log the message */ - } - unbecome_root(); - } - else { - status = add_builtin_administrators( result ); - if ( !NT_STATUS_IS_OK(status) ) { - /* just log a complaint but do not fail */ - DEBUG(3,("create_local_nt_token: failed to check for local Administrators" - " membership (%s)\n", nt_errstr(status))); - } - } - } - - /* Deal with the BUILTIN\Users group. If the SID can - be resolved then assume that the add_aliasmem( S-1-5-32 ) - handled it. */ - - if ( !sid_to_gid( &global_sid_Builtin_Users, &gid ) ) { - /* We can only create a mapping if winbind is running - and the nested group functionality has been enabled */ - - if ( lp_winbind_nested_groups() && winbind_ping() ) { - become_root(); - status = create_builtin_users( ); - if ( !NT_STATUS_IS_OK(status) ) { - DEBUG(2,("create_local_nt_token: Failed to create BUILTIN\\Users group!\n")); - /* don't fail, just log the message */ - } - unbecome_root(); - } - } - - /* Deal with local groups */ - - if (lp_winbind_nested_groups()) { - - /* Now add the aliases. First the one from our local SAM */ - - status = add_aliases(get_global_sam_sid(), result); - - if (!NT_STATUS_IS_OK(status)) { - TALLOC_FREE(result); - return NULL; - } - - /* Finally the builtin ones */ - - status = add_aliases(&global_sid_Builtin, result); - - if (!NT_STATUS_IS_OK(status)) { - TALLOC_FREE(result); - return NULL; - } - } - - - get_privileges_for_sids(&result->privileges, result->user_sids, - result->num_sids); - return result; -} - /* * Create the token to use from server_info->sam_account and * server_info->sids (the info3/sam groups). Find the unix gids. @@ -2039,89 +1690,6 @@ BOOL make_auth_methods(struct auth_context *auth_context, auth_methods **auth_me return True; } -/**************************************************************************** - Duplicate a SID token. -****************************************************************************/ - -NT_USER_TOKEN *dup_nt_token(TALLOC_CTX *mem_ctx, const NT_USER_TOKEN *ptoken) -{ - NT_USER_TOKEN *token; - - if (!ptoken) - return NULL; - - token = TALLOC_P(mem_ctx, NT_USER_TOKEN); - if (token == NULL) { - DEBUG(0, ("talloc failed\n")); - return NULL; - } - - ZERO_STRUCTP(token); - - if (ptoken->user_sids && ptoken->num_sids) { - token->user_sids = (DOM_SID *)talloc_memdup( - token, ptoken->user_sids, sizeof(DOM_SID) * ptoken->num_sids ); - - if (token->user_sids == NULL) { - DEBUG(0, ("talloc_memdup failed\n")); - TALLOC_FREE(token); - return NULL; - } - token->num_sids = ptoken->num_sids; - } - - /* copy the privileges; don't consider failure to be critical here */ - - if ( !se_priv_copy( &token->privileges, &ptoken->privileges ) ) { - DEBUG(0,("dup_nt_token: Failure to copy SE_PRIV!. " - "Continuing with 0 privileges assigned.\n")); - } - - return token; -} - -/**************************************************************************** - Check for a SID in an NT_USER_TOKEN -****************************************************************************/ - -BOOL nt_token_check_sid ( const DOM_SID *sid, const NT_USER_TOKEN *token ) -{ - int i; - - if ( !sid || !token ) - return False; - - for ( i=0; i<token->num_sids; i++ ) { - if ( sid_equal( sid, &token->user_sids[i] ) ) - return True; - } - - return False; -} - -BOOL nt_token_check_domain_rid( NT_USER_TOKEN *token, uint32 rid ) -{ - DOM_SID domain_sid; - - /* if we are a domain member, the get the domain SID, else for - a DC or standalone server, use our own SID */ - - if ( lp_server_role() == ROLE_DOMAIN_MEMBER ) { - if ( !secrets_fetch_domain_sid( lp_workgroup(), - &domain_sid ) ) { - DEBUG(1,("nt_token_check_domain_rid: Cannot lookup " - "SID for domain [%s]\n", lp_workgroup())); - return False; - } - } - else - sid_copy( &domain_sid, get_global_sam_sid() ); - - sid_append_rid( &domain_sid, rid ); - - return nt_token_check_sid( &domain_sid, token );\ -} - /** * Verify whether or not given domain is trusted. * |