From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- source3/auth/auth_unix.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 source3/auth/auth_unix.c (limited to 'source3/auth/auth_unix.c') diff --git a/source3/auth/auth_unix.c b/source3/auth/auth_unix.c new file mode 100644 index 0000000..eaf344d --- /dev/null +++ b/source3/auth/auth_unix.c @@ -0,0 +1,107 @@ +/* + 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 3 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, see . +*/ + +#include "includes.h" +#include "auth.h" +#include "system/passwd.h" +#include "../lib/tsocket/tsocket.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_AUTH + +/** Check a plaintext username/password + * + * Cannot deal with an encrypted 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 struct auth_usersupplied_info *user_info, + struct auth_serversupplied_info **server_info) +{ + NTSTATUS nt_status; + struct passwd *pass = NULL; + const char *rhost; + + DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name)); + + if (tsocket_address_is_inet(user_info->remote_host, "ip")) { + rhost = tsocket_address_inet_addr_string(user_info->remote_host, + talloc_tos()); + if (rhost == NULL) { + return NT_STATUS_NO_MEMORY; + } + } else { + rhost = "127.0.0.1"; + } + + become_root(); + pass = Get_Pwnam_alloc(talloc_tos(), user_info->mapped.account_name); + + /** @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->mapped.account_name, + rhost, + user_info->password.plaintext, + true); + + unbecome_root(); + + if (NT_STATUS_IS_OK(nt_status)) { + if (pass != NULL) { + nt_status = make_server_info_pw(mem_ctx, + pass->pw_name, + pass, + server_info); + } else { + /* we need to do something more useful here */ + nt_status = NT_STATUS_NO_SUCH_USER; + } + } + + TALLOC_FREE(pass); + return nt_status; +} + +/* module initialisation */ +static NTSTATUS auth_init_unix( + struct auth_context *auth_context, + const char* param, + struct auth_methods **auth_method) +{ + struct auth_methods *result; + + result = talloc_zero(auth_context, struct auth_methods); + if (result == NULL) { + return NT_STATUS_NO_MEMORY; + } + result->name = "unix"; + result->auth = check_unix_security; + + *auth_method = result; + return NT_STATUS_OK; +} + +NTSTATUS auth_unix_init(TALLOC_CTX *mem_ctx) +{ + return smb_register_auth(AUTH_INTERFACE_VERSION, "unix", auth_init_unix); +} -- cgit v1.2.3