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-rw-r--r--source4/auth/auth_unix.c132
1 files changed, 132 insertions, 0 deletions
diff --git a/source4/auth/auth_unix.c b/source4/auth/auth_unix.c
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+++ b/source4/auth/auth_unix.c
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+/*
+ 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);
+ } else {
+ /* we need to do somthing more useful here */
+ nt_status = NT_STATUS_NO_SUCH_USER;
+ }
+ }
+
+ return nt_status;
+}
+
+/* module initialisation */
+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;
+}
+