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authorJeremy Allison <jra@samba.org>2008-10-21 18:05:48 -0700
committerJeremy Allison <jra@samba.org>2008-10-21 18:05:48 -0700
commit4e9db0b1004aedf9eef69b9361ed6d9e69897a1e (patch)
tree9b6a40d9ca106e176b91a123f5892fe73a1d3bfc /source3/rpc_server
parentf36e51617c7bd316f3ef393532bbc169895d6a66 (diff)
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Cope with MAXIMUM_ALLOWED_ACCESS requests when opening handles.
Jeremy.
Diffstat (limited to 'source3/rpc_server')
-rw-r--r--source3/rpc_server/srv_samr_nt.c64
1 files changed, 59 insertions, 5 deletions
diff --git a/source3/rpc_server/srv_samr_nt.c b/source3/rpc_server/srv_samr_nt.c
index 261d77ca65..221ad29144 100644
--- a/source3/rpc_server/srv_samr_nt.c
+++ b/source3/rpc_server/srv_samr_nt.c
@@ -5,7 +5,7 @@
* Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
* Copyright (C) Paul Ashton 1997,
* Copyright (C) Marc Jacobsen 1999,
- * Copyright (C) Jeremy Allison 2001-2005,
+ * Copyright (C) Jeremy Allison 2001-2008,
* Copyright (C) Jean François Micouleau 1998-2001,
* Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002,
* Copyright (C) Gerald (Jerry) Carter 2003-2004,
@@ -248,6 +248,48 @@ static NTSTATUS access_check_samr_function(uint32 acc_granted, uint32 acc_requir
}
/*******************************************************************
+ Map any MAXIMUM_ALLOWED_ACCESS request to a valid access set.
+********************************************************************/
+
+static void map_max_allowed_access(const NT_USER_TOKEN *token,
+ uint32_t *pacc_requested)
+{
+ if (!((*pacc_requested) & MAXIMUM_ALLOWED_ACCESS)) {
+ return;
+ }
+ *pacc_requested &= ~MAXIMUM_ALLOWED_ACCESS;
+
+ /* At least try for generic read. */
+ *pacc_requested = GENERIC_READ_ACCESS;
+
+ /* root gets anything. */
+ if (geteuid() == sec_initial_uid()) {
+ *pacc_requested |= GENERIC_ALL_ACCESS;
+ return;
+ }
+
+ /* Full Access for 'BUILTIN\Administrators' and 'BUILTIN\Account Operators */
+
+ if (is_sid_in_token(token, &global_sid_Builtin_Administrators) ||
+ is_sid_in_token(token, &global_sid_Builtin_Account_Operators)) {
+ *pacc_requested |= GENERIC_ALL_ACCESS;
+ return;
+ }
+
+ /* Full access for DOMAIN\Domain Admins. */
+ if ( IS_DC ) {
+ DOM_SID domadmin_sid;
+ sid_copy( &domadmin_sid, get_global_sam_sid() );
+ sid_append_rid( &domadmin_sid, DOMAIN_GROUP_RID_ADMINS );
+ if (is_sid_in_token(token, &domadmin_sid)) {
+ *pacc_requested |= GENERIC_ALL_ACCESS;
+ return;
+ }
+ }
+ /* TODO ! Check privileges. */
+}
+
+/*******************************************************************
Fetch or create a dispinfo struct.
********************************************************************/
@@ -585,6 +627,7 @@ NTSTATUS _samr_OpenDomain(pipes_struct *p,
return status;
/*check if access can be granted as requested by client. */
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
make_samr_object_sd( p->mem_ctx, &psd, &sd_size, &dom_generic_mapping, NULL, 0 );
se_map_generic( &des_access, &dom_generic_mapping );
@@ -2178,6 +2221,8 @@ NTSTATUS _samr_OpenUser(pipes_struct *p,
/* check if access can be granted as requested by client. */
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
+
make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &usr_generic_mapping, &sid, SAMR_USR_RIGHTS_WRITE_PW);
se_map_generic(&des_access, &usr_generic_mapping);
@@ -3255,6 +3300,8 @@ NTSTATUS _samr_CreateUser2(pipes_struct *p,
sid_compose(&sid, get_global_sam_sid(), *r->out.rid);
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
+
make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &usr_generic_mapping,
&sid, SAMR_USR_RIGHTS_WRITE_PW);
se_map_generic(&des_access, &usr_generic_mapping);
@@ -3316,10 +3363,7 @@ NTSTATUS _samr_Connect(pipes_struct *p,
was observed from a win98 client trying to enumerate users (when configured
user level access control on shares) --jerry */
- if (des_access == MAXIMUM_ALLOWED_ACCESS) {
- /* Map to max possible knowing we're filtered below. */
- des_access = GENERIC_ALL_ACCESS;
- }
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
se_map_generic( &des_access, &sam_generic_mapping );
info->acc_granted = des_access & (SA_RIGHT_SAM_ENUM_DOMAINS|SA_RIGHT_SAM_OPEN_DOMAIN);
@@ -3355,6 +3399,8 @@ NTSTATUS _samr_Connect2(pipes_struct *p,
return NT_STATUS_ACCESS_DENIED;
}
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
+
make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &sam_generic_mapping, NULL, 0);
se_map_generic(&des_access, &sam_generic_mapping);
@@ -3404,6 +3450,8 @@ NTSTATUS _samr_Connect4(pipes_struct *p,
return NT_STATUS_ACCESS_DENIED;
}
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
+
make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &sam_generic_mapping, NULL, 0);
se_map_generic(&des_access, &sam_generic_mapping);
@@ -3453,6 +3501,8 @@ NTSTATUS _samr_Connect5(pipes_struct *p,
return NT_STATUS_ACCESS_DENIED;
}
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
+
make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &sam_generic_mapping, NULL, 0);
se_map_generic(&des_access, &sam_generic_mapping);
@@ -3620,6 +3670,8 @@ NTSTATUS _samr_OpenAlias(pipes_struct *p,
/*check if access can be granted as requested by client. */
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
+
make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &ali_generic_mapping, NULL, 0);
se_map_generic(&des_access,&ali_generic_mapping);
@@ -5514,6 +5566,8 @@ NTSTATUS _samr_OpenGroup(pipes_struct *p,
return status;
/*check if access can be granted as requested by client. */
+ map_max_allowed_access(p->pipe_user.nt_user_token, &des_access);
+
make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &grp_generic_mapping, NULL, 0);
se_map_generic(&des_access,&grp_generic_mapping);