dd88460800
Previously we needed to include headers required by the various sudo*h files. Now those files are more self-sufficient and we should only include headers needed by code in the various .c files.
147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2004-2005, 2007-2018 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "sudoers.h"
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#include "parse.h"
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#include "sudo_lbuf.h"
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#include <gram.h>
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struct sudo_file_handle {
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FILE *fp;
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struct sudoers_parse_tree parse_tree;
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};
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static int
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sudo_file_close(struct sudo_nss *nss)
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{
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debug_decl(sudo_file_close, SUDOERS_DEBUG_NSS);
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struct sudo_file_handle *handle = nss->handle;
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if (handle != NULL) {
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fclose(handle->fp);
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sudoersin = NULL;
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free_parse_tree(&handle->parse_tree);
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free(handle);
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nss->handle = NULL;
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}
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debug_return_int(0);
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}
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static int
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sudo_file_open(struct sudo_nss *nss)
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{
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debug_decl(sudo_file_open, SUDOERS_DEBUG_NSS);
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struct sudo_file_handle *handle;
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if (def_ignore_local_sudoers)
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debug_return_int(-1);
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if (nss->handle != NULL) {
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sudo_debug_printf(SUDO_DEBUG_ERROR,
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"%s: called with non-NULL handle %p", __func__, nss->handle);
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sudo_file_close(nss);
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}
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handle = malloc(sizeof(*handle));
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if (handle != NULL) {
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handle->fp = open_sudoers(sudoers_file, false, NULL);
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if (handle->fp != NULL) {
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init_parse_tree(&handle->parse_tree, NULL, NULL);
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} else {
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free(handle);
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handle = NULL;
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}
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}
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nss->handle = handle;
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debug_return_int(nss->handle ? 0 : -1);
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}
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/*
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* Parse and return the specified sudoers file.
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*/
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static struct sudoers_parse_tree *
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sudo_file_parse(struct sudo_nss *nss)
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{
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debug_decl(sudo_file_close, SUDOERS_DEBUG_NSS);
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struct sudo_file_handle *handle = nss->handle;
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if (handle == NULL || handle->fp == NULL) {
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sudo_debug_printf(SUDO_DEBUG_ERROR, "%s: called with NULL %s",
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__func__, handle ? "file pointer" : "handle");
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debug_return_ptr(NULL);
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}
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sudoersin = handle->fp;
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if (sudoersparse() != 0 || parse_error) {
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if (errorlineno != -1) {
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log_warningx(SLOG_SEND_MAIL, N_("parse error in %s near line %d"),
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errorfile, errorlineno);
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} else {
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log_warningx(SLOG_SEND_MAIL, N_("parse error in %s"), errorfile);
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}
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debug_return_ptr(NULL);
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}
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/* Move parsed sudoers policy to nss handle. */
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reparent_parse_tree(&handle->parse_tree);
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debug_return_ptr(&handle->parse_tree);
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}
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/*
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* No need for explicit sudoers queries, the parse function handled it.
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*/
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static int
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sudo_file_query(struct sudo_nss *nss, struct passwd *pw)
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{
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debug_decl(sudo_file_query, SUDOERS_DEBUG_NSS);
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debug_return_int(0);
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}
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/*
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* No need to get defaults for sudoers file, the parse function handled it.
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*/
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static int
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sudo_file_getdefs(struct sudo_nss *nss)
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{
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debug_decl(sudo_file_getdefs, SUDOERS_DEBUG_NSS);
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debug_return_int(0);
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}
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/* sudo_nss implementation */
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struct sudo_nss sudo_nss_file = {
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{ NULL, NULL },
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sudo_file_open,
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sudo_file_close,
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sudo_file_parse,
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sudo_file_query,
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sudo_file_getdefs
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};
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