r26134: Avoid using samdb-dependent functions in auth_system_session.

[garming/samba-autobuild/.git] / source4 / auth / system_session.c

diff --git a/source4/auth/system_session.c b/source4/auth/system_session.c
index ec461cda5a627a3d19e89f489d1940d6f1822fec..c98d0b1d2c79c6c044be50c3190a67a2baa6f6d4 100644 (file)
--- a/source4/auth/system_session.c
+++ b/source4/auth/system_session.c
@@ -24,13 +24,129 @@
 #include "includes.h"
 #include "libcli/security/security.h"
 #include "libcli/auth/libcli_auth.h"
-#include "dsdb/samdb/samdb.h"
 #include "auth/credentials/credentials.h"
 #include "param/param.h"
 #include "auth/auth.h" /* for auth_serversupplied_info */
 #include "auth/session.h"
 #include "auth/system_session_proto.h"
 
+/**
+ * Create the SID list for this user. 
+ *
+ * @note Specialised version for system sessions that doesn't use the SAM.
+ */
+static NTSTATUS create_token(TALLOC_CTX *mem_ctx, 
+                              struct dom_sid *user_sid,
+                              struct dom_sid *group_sid, 
+                              int n_groupSIDs,
+                              struct dom_sid **groupSIDs, 
+                              bool is_authenticated,
+                              struct security_token **token)
+{
+       struct security_token *ptoken;
+       int i;
+
+       ptoken = security_token_initialise(mem_ctx);
+       NT_STATUS_HAVE_NO_MEMORY(ptoken);
+
+       ptoken->sids = talloc_array(ptoken, struct dom_sid *, n_groupSIDs + 5);
+       NT_STATUS_HAVE_NO_MEMORY(ptoken->sids);
+
+       ptoken->user_sid = talloc_reference(ptoken, user_sid);
+       ptoken->group_sid = talloc_reference(ptoken, group_sid);
+       ptoken->privilege_mask = 0;
+
+       ptoken->sids[0] = ptoken->user_sid;
+       ptoken->sids[1] = ptoken->group_sid;
+
+       /*
+        * Finally add the "standard" SIDs.
+        * The only difference between guest and "anonymous"
+        * is the addition of Authenticated_Users.
+        */
+       ptoken->sids[2] = dom_sid_parse_talloc(ptoken->sids, SID_WORLD);
+       NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[2]);
+       ptoken->sids[3] = dom_sid_parse_talloc(ptoken->sids, SID_NT_NETWORK);
+       NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[3]);
+       ptoken->num_sids = 4;
+
+       if (is_authenticated) {
+               ptoken->sids[4] = dom_sid_parse_talloc(ptoken->sids, SID_NT_AUTHENTICATED_USERS);
+               NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[4]);
+               ptoken->num_sids++;
+       }
+
+       for (i = 0; i < n_groupSIDs; i++) {
+               size_t check_sid_idx;
+               for (check_sid_idx = 1; 
+                    check_sid_idx < ptoken->num_sids; 
+                    check_sid_idx++) {
+                       if (dom_sid_equal(ptoken->sids[check_sid_idx], groupSIDs[i])) {
+                               break;
+                       }
+               }
+
+               if (check_sid_idx == ptoken->num_sids) {
+                       ptoken->sids[ptoken->num_sids++] = talloc_reference(ptoken->sids, groupSIDs[i]);
+               }
+       }
+
+       *token = ptoken;
+
+       /* Shortcuts to prevent recursion and avoid lookups */
+       if (ptoken->user_sid == NULL) {
+               ptoken->privilege_mask = 0;
+               return NT_STATUS_OK;
+       } 
+       
+       if (security_token_is_system(ptoken)) {
+               ptoken->privilege_mask = ~0;
+               return NT_STATUS_OK;
+       } 
+       
+       if (security_token_is_anonymous(ptoken)) {
+               ptoken->privilege_mask = 0;
+               return NT_STATUS_OK;
+       }
+
+       DEBUG(0, ("Created token was not system or anonymous token!"));
+       *token = NULL;
+       return NT_STATUS_INTERNAL_ERROR;
+}
+
+static NTSTATUS generate_session_info(TALLOC_CTX *mem_ctx, 
+                                   struct auth_serversupplied_info *server_info, 
+                                   struct auth_session_info **_session_info) 
+{
+       struct auth_session_info *session_info;
+       NTSTATUS nt_status;
+
+       session_info = talloc(mem_ctx, struct auth_session_info);
+       NT_STATUS_HAVE_NO_MEMORY(session_info);
+
+       session_info->server_info = talloc_reference(session_info, server_info);
+
+       /* unless set otherwise, the session key is the user session
+        * key from the auth subsystem */ 
+       session_info->session_key = server_info->user_session_key;
+
+       nt_status = create_token(session_info,
+                                         server_info->account_sid,
+                                         server_info->primary_group_sid,
+                                         server_info->n_domain_groups,
+                                         server_info->domain_groups,
+                                         server_info->authenticated,
+                                         &session_info->security_token);
+       NT_STATUS_NOT_OK_RETURN(nt_status);
+
+       session_info->credentials = NULL;
+
+       *_session_info = session_info;
+       return NT_STATUS_OK;
+}
+
+
+
 /**
   Create a system session, with machine account credentials
 */
@@ -63,7 +179,7 @@ static NTSTATUS _auth_system_session_info(TALLOC_CTX *parent_ctx,
        }
 
        /* references the server_info into the session_info */
-       nt_status = auth_generate_session_info(parent_ctx, server_info, &session_info);
+       nt_status = generate_session_info(parent_ctx, server_info, &session_info);
        talloc_free(mem_ctx);
 
        NT_STATUS_NOT_OK_RETURN(nt_status);