Initial import

[samba] / source / auth / auth_unix.c

diff --git a/source/auth/auth_unix.c b/source/auth/auth_unix.c
new file mode 100644 (file)
index 0000000..f744cba
--- /dev/null
+++ b/source/auth/auth_unix.c
@@ -0,0 +1,136 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Password and authentication handling
+   Copyright (C) Andrew Bartlett              2001
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+/**
+ * update the encrypted smbpasswd file from the plaintext username and password
+ *  
+ *  this ugly hack needs to die, but not quite yet, I think people still use it...
+ **/
+static BOOL update_smbpassword_file(const char *user, const char *password)
+{
+       SAM_ACCOUNT     *sampass = NULL;
+       BOOL            ret;
+       
+       pdb_init_sam(&sampass);
+       
+       become_root();
+       ret = pdb_getsampwnam(sampass, user);
+       unbecome_root();
+
+       if(ret == False) {
+               DEBUG(0,("pdb_getsampwnam returned NULL\n"));
+               pdb_free_sam(&sampass);
+               return False;
+       }
+
+       /*
+        * Remove the account disabled flag - we are updating the
+        * users password from a login.
+        */
+       if (!pdb_set_acct_ctrl(sampass, pdb_get_acct_ctrl(sampass) & ~ACB_DISABLED, PDB_CHANGED)) {
+               pdb_free_sam(&sampass);
+               return False;
+       }
+
+       if (!pdb_set_plaintext_passwd (sampass, password)) {
+               pdb_free_sam(&sampass);
+               return False;
+       }
+
+       /* Now write it into the file. */
+       become_root();
+
+       ret = pdb_update_sam_account (sampass);
+
+       unbecome_root();
+
+       if (ret) {
+               DEBUG(3,("pdb_update_sam_account returned %d\n",ret));
+       }
+
+       pdb_free_sam(&sampass);
+       return ret;
+}
+
+
+/** Check a plaintext username/password
+ *
+ * Cannot deal with an encrupted password in any manner whatsoever,
+ * unless the account has a null password.
+ **/
+
+static NTSTATUS check_unix_security(const struct auth_context *auth_context,
+                            void *my_private_data, 
+                            TALLOC_CTX *mem_ctx,
+                            const auth_usersupplied_info *user_info, 
+                            auth_serversupplied_info **server_info)
+{
+       NTSTATUS nt_status;
+       struct passwd *pass = NULL;
+
+       become_root();
+       pass = Get_Pwnam(user_info->internal_username.str);
+
+       
+       /** @todo This call assumes a ASCII password, no charset transformation is 
+           done.  We may need to revisit this **/
+       nt_status = pass_check(pass,
+                               pass ? pass->pw_name : user_info->internal_username.str, 
+                               (char *)user_info->plaintext_password.data,
+                               user_info->plaintext_password.length-1,
+                               lp_update_encrypted() ? 
+                               update_smbpassword_file : NULL,
+                               True);
+       
+       unbecome_root();
+
+       if (NT_STATUS_IS_OK(nt_status)) {
+               if (pass) {
+                       make_server_info_pw(server_info, pass->pw_name, pass);
+               } else {
+                       /* we need to do somthing more useful here */
+                       nt_status = NT_STATUS_NO_SUCH_USER;
+               }
+       }
+
+       return nt_status;
+}
+
+/* module initialisation */
+static NTSTATUS auth_init_unix(struct auth_context *auth_context, const char* param, auth_methods **auth_method) 
+{
+       if (!make_auth_methods(auth_context, auth_method)) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       (*auth_method)->name = "unix";
+       (*auth_method)->auth = check_unix_security;
+       return NT_STATUS_OK;
+}
+
+NTSTATUS auth_unix_init(void)
+{
+       return smb_register_auth(AUTH_INTERFACE_VERSION, "unix", auth_init_unix);
+}