diff options
Diffstat (limited to 'source3/passdb/pdb_interface.c')
| -rw-r--r-- | source3/passdb/pdb_interface.c | 86 |
1 files changed, 77 insertions, 9 deletions
diff --git a/source3/passdb/pdb_interface.c b/source3/passdb/pdb_interface.c index 7ff0214c72..5fdc8ac819 100644 --- a/source3/passdb/pdb_interface.c +++ b/source3/passdb/pdb_interface.c @@ -426,6 +426,13 @@ static int smb_delete_user(const char *unix_user) pstring del_script; int ret; + /* safety check */ + + if ( strequal( unix_user, "root" ) ) { + DEBUG(0,("smb_delete_user: Refusing to delete local system root account!\n")); + return -1; + } + pstrcpy(del_script, lp_deluser_script()); if (! *del_script) return -1; @@ -462,11 +469,22 @@ static NTSTATUS pdb_default_delete_user(struct pdb_methods *methods, NTSTATUS pdb_delete_user(TALLOC_CTX *mem_ctx, struct samu *sam_acct) { struct pdb_methods *pdb = pdb_get_methods(); + uid_t uid = -1; if ( !pdb ) { return NT_STATUS_UNSUCCESSFUL; } + /* sanity check to make sure we don't delete root */ + + if ( !sid_to_uid( pdb_get_user_sid(sam_acct), &uid ) ) { + return NT_STATUS_NO_SUCH_USER; + } + + if ( uid == 0 ) { + return NT_STATUS_ACCESS_DENIED; + } + return pdb->delete_user(pdb, mem_ctx, sam_acct); } @@ -516,6 +534,7 @@ NTSTATUS pdb_delete_sam_account(struct samu *sam_acct) NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname) { struct pdb_methods *pdb = pdb_get_methods(); + uid_t uid; if ( !pdb ) { return NT_STATUS_NOT_IMPLEMENTED; @@ -526,6 +545,16 @@ NTSTATUS pdb_rename_sam_account(struct samu *oldname, const char *newname) csamuser = NULL; } + /* sanity check to make sure we don't rename root */ + + if ( !sid_to_uid( pdb_get_user_sid(oldname), &uid ) ) { + return NT_STATUS_NO_SUCH_USER; + } + + if ( uid == 0 ) { + return NT_STATUS_ACCESS_DENIED; + } + return pdb->rename_sam_account(pdb, oldname, newname); } @@ -976,8 +1005,7 @@ BOOL pdb_find_alias(const char *name, DOM_SID *sid) return False; } - return NT_STATUS_IS_OK(pdb->find_alias(pdb, - name, sid)); + return NT_STATUS_IS_OK(pdb->find_alias(pdb, name, sid)); } NTSTATUS pdb_create_alias(const char *name, uint32 *rid) @@ -999,8 +1027,7 @@ BOOL pdb_delete_alias(const DOM_SID *sid) return False; } - return NT_STATUS_IS_OK(pdb->delete_alias(pdb, - sid)); + return NT_STATUS_IS_OK(pdb->delete_alias(pdb, sid)); } @@ -1012,8 +1039,7 @@ BOOL pdb_get_aliasinfo(const DOM_SID *sid, struct acct_info *info) return False; } - return NT_STATUS_IS_OK(pdb->get_aliasinfo(pdb, sid, - info)); + return NT_STATUS_IS_OK(pdb->get_aliasinfo(pdb, sid, info)); } BOOL pdb_set_aliasinfo(const DOM_SID *sid, struct acct_info *info) @@ -1024,8 +1050,7 @@ BOOL pdb_set_aliasinfo(const DOM_SID *sid, struct acct_info *info) return False; } - return NT_STATUS_IS_OK(pdb->set_aliasinfo(pdb, sid, - info)); + return NT_STATUS_IS_OK(pdb->set_aliasinfo(pdb, sid, info)); } NTSTATUS pdb_add_aliasmem(const DOM_SID *alias, const DOM_SID *member) @@ -1192,9 +1217,21 @@ BOOL pdb_rid_algorithm(void) return pdb->rid_algorithm(pdb); } +/******************************************************************** + Allocate a new RID from the passdb backend. Verify that it is free + by calling lookup_global_sam_rid() to verify that the RID is not + in use. This handles servers that have existing users or groups + with add RIDs (assigned from previous algorithmic mappings) +********************************************************************/ + BOOL pdb_new_rid(uint32 *rid) { struct pdb_methods *pdb = pdb_get_methods(); + const char *name = NULL; + enum SID_NAME_USE type; + uint32 allocated_rid = 0; + int i; + TALLOC_CTX *ctx; if ( !pdb ) { return False; @@ -1215,7 +1252,38 @@ BOOL pdb_new_rid(uint32 *rid) return False; } - return pdb->new_rid(pdb, rid); + if ( (ctx = talloc_init("pdb_new_rid")) == NULL ) { + DEBUG(0,("pdb_new_rid: Talloc initialization failure\n")); + return False; + } + + /* Attempt to get an unused RID (max tires is 250...yes that it is + and arbitrary number I pulkled out of my head). -- jerry */ + + for ( i=0; allocated_rid==0 && i<250; i++ ) { + /* get a new RID */ + + if ( !pdb->new_rid(pdb, &allocated_rid) ) { + return False; + } + + /* validate that the RID is not in use */ + + if ( lookup_global_sam_rid( ctx, allocated_rid, &name, &type, NULL ) ) { + allocated_rid = 0; + } + } + + TALLOC_FREE( ctx ); + + if ( allocated_rid == 0 ) { + DEBUG(0,("pdb_new_rid: Failed to find unused RID\n")); + return False; + } + + *rid = allocated_rid; + + return True; } /*************************************************************** |