d915a14ef0
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
442 lines
11 KiB
C
442 lines
11 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "namespace.h"
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#define _NS_PRIVATE
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#include <nsswitch.h>
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#include <stdlib.h>
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#include <string.h>
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#include "un-namespace.h"
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#include "nscachedcli.h"
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#include "nscache.h"
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#define NSS_CACHE_KEY_INITIAL_SIZE (256)
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#define NSS_CACHE_KEY_SIZE_LIMIT (NSS_CACHE_KEY_INITIAL_SIZE << 4)
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#define NSS_CACHE_BUFFER_INITIAL_SIZE (1024)
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#define NSS_CACHE_BUFFER_SIZE_LIMIT (NSS_CACHE_BUFFER_INITIAL_SIZE << 8)
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#define CACHED_SOCKET_PATH "/var/run/nscd"
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int
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__nss_cache_handler(void *retval, void *mdata, va_list ap)
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{
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return (NS_UNAVAIL);
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}
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int
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__nss_common_cache_read(void *retval, void *mdata, va_list ap)
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{
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struct cached_connection_params params;
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cached_connection connection;
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char *buffer;
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size_t buffer_size, size;
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nss_cache_info const *cache_info;
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nss_cache_data *cache_data;
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va_list ap_new;
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int res;
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cache_data = (nss_cache_data *)mdata;
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cache_info = cache_data->info;
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memset(¶ms, 0, sizeof(struct cached_connection_params));
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params.socket_path = CACHED_SOCKET_PATH;
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cache_data->key = (char *)malloc(NSS_CACHE_KEY_INITIAL_SIZE);
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memset(cache_data->key, 0, NSS_CACHE_KEY_INITIAL_SIZE);
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cache_data->key_size = NSS_CACHE_KEY_INITIAL_SIZE;
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va_copy(ap_new, ap);
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do {
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size = cache_data->key_size;
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res = cache_info->id_func(cache_data->key, &size, ap_new,
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cache_info->mdata);
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va_end(ap_new);
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if (res == NS_RETURN) {
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if (cache_data->key_size > NSS_CACHE_KEY_SIZE_LIMIT)
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break;
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cache_data->key_size <<= 1;
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cache_data->key = realloc(cache_data->key,
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cache_data->key_size);
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memset(cache_data->key, 0, cache_data->key_size);
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va_copy(ap_new, ap);
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}
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} while (res == NS_RETURN);
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if (res != NS_SUCCESS) {
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free(cache_data->key);
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cache_data->key = NULL;
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cache_data->key_size = 0;
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return (res);
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} else
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cache_data->key_size = size;
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buffer_size = NSS_CACHE_BUFFER_INITIAL_SIZE;
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buffer = (char *)malloc(NSS_CACHE_BUFFER_INITIAL_SIZE);
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memset(buffer, 0, NSS_CACHE_BUFFER_INITIAL_SIZE);
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do {
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connection = __open_cached_connection(¶ms);
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if (connection == NULL) {
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res = -1;
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break;
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}
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res = __cached_read(connection, cache_info->entry_name,
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cache_data->key, cache_data->key_size, buffer,
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&buffer_size);
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__close_cached_connection(connection);
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if (res == -2 && buffer_size < NSS_CACHE_BUFFER_SIZE_LIMIT) {
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buffer = (char *)realloc(buffer, buffer_size);
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memset(buffer, 0, buffer_size);
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}
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} while (res == -2);
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if (res == 0) {
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if (buffer_size == 0) {
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free(buffer);
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free(cache_data->key);
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cache_data->key = NULL;
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cache_data->key_size = 0;
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return (NS_RETURN);
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}
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va_copy(ap_new, ap);
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res = cache_info->unmarshal_func(buffer, buffer_size, retval,
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ap_new, cache_info->mdata);
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va_end(ap_new);
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if (res != NS_SUCCESS) {
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free(buffer);
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free(cache_data->key);
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cache_data->key = NULL;
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cache_data->key_size = 0;
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return (res);
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} else
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res = 0;
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}
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if (res == 0) {
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free(cache_data->key);
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cache_data->key = NULL;
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cache_data->key_size = 0;
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}
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free(buffer);
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return (res == 0 ? NS_SUCCESS : NS_NOTFOUND);
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}
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int
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__nss_common_cache_write(void *retval, void *mdata, va_list ap)
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{
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struct cached_connection_params params;
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cached_connection connection;
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char *buffer;
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size_t buffer_size;
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nss_cache_info const *cache_info;
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nss_cache_data *cache_data;
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va_list ap_new;
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int res;
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cache_data = (nss_cache_data *)mdata;
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cache_info = cache_data->info;
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if (cache_data->key == NULL)
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return (NS_UNAVAIL);
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memset(¶ms, 0, sizeof(struct cached_connection_params));
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params.socket_path = CACHED_SOCKET_PATH;
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connection = __open_cached_connection(¶ms);
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if (connection == NULL) {
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free(cache_data->key);
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return (NS_UNAVAIL);
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}
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buffer_size = NSS_CACHE_BUFFER_INITIAL_SIZE;
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buffer = (char *)malloc(NSS_CACHE_BUFFER_INITIAL_SIZE);
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memset(buffer, 0, NSS_CACHE_BUFFER_INITIAL_SIZE);
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do {
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size_t size;
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size = buffer_size;
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va_copy(ap_new, ap);
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res = cache_info->marshal_func(buffer, &size, retval, ap_new,
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cache_info->mdata);
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va_end(ap_new);
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if (res == NS_RETURN) {
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if (buffer_size > NSS_CACHE_BUFFER_SIZE_LIMIT)
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break;
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buffer_size <<= 1;
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buffer = (char *)realloc(buffer, buffer_size);
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memset(buffer, 0, buffer_size);
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}
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} while (res == NS_RETURN);
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if (res != NS_SUCCESS) {
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__close_cached_connection(connection);
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free(cache_data->key);
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free(buffer);
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return (res);
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}
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res = __cached_write(connection, cache_info->entry_name,
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cache_data->key, cache_data->key_size, buffer, buffer_size);
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__close_cached_connection(connection);
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free(cache_data->key);
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free(buffer);
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return (res == 0 ? NS_SUCCESS : NS_UNAVAIL);
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}
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int
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__nss_common_cache_write_negative(void *mdata)
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{
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struct cached_connection_params params;
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cached_connection connection;
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int res;
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nss_cache_info const *cache_info;
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nss_cache_data *cache_data;
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cache_data = (nss_cache_data *)mdata;
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cache_info = cache_data->info;
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if (cache_data->key == NULL)
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return (NS_UNAVAIL);
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memset(¶ms, 0, sizeof(struct cached_connection_params));
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params.socket_path = CACHED_SOCKET_PATH;
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connection = __open_cached_connection(¶ms);
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if (connection == NULL) {
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free(cache_data->key);
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return (NS_UNAVAIL);
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}
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res = __cached_write(connection, cache_info->entry_name,
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cache_data->key, cache_data->key_size, NULL, 0);
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__close_cached_connection(connection);
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free(cache_data->key);
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return (res == 0 ? NS_SUCCESS : NS_UNAVAIL);
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}
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int
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__nss_mp_cache_read(void *retval, void *mdata, va_list ap)
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{
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struct cached_connection_params params;
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cached_mp_read_session rs;
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char *buffer;
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size_t buffer_size;
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nss_cache_info const *cache_info;
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nss_cache_data *cache_data;
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va_list ap_new;
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int res;
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cache_data = (nss_cache_data *)mdata;
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cache_info = cache_data->info;
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if (cache_info->get_mp_ws_func() != INVALID_CACHED_MP_WRITE_SESSION)
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return (NS_UNAVAIL);
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rs = cache_info->get_mp_rs_func();
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if (rs == INVALID_CACHED_MP_READ_SESSION) {
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memset(¶ms, 0, sizeof(struct cached_connection_params));
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params.socket_path = CACHED_SOCKET_PATH;
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rs = __open_cached_mp_read_session(¶ms,
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cache_info->entry_name);
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if (rs == INVALID_CACHED_MP_READ_SESSION)
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return (NS_UNAVAIL);
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cache_info->set_mp_rs_func(rs);
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}
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buffer_size = NSS_CACHE_BUFFER_INITIAL_SIZE;
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buffer = (char *)malloc(NSS_CACHE_BUFFER_INITIAL_SIZE);
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memset(buffer, 0, NSS_CACHE_BUFFER_INITIAL_SIZE);
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do {
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res = __cached_mp_read(rs, buffer, &buffer_size);
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if (res == -2 && buffer_size < NSS_CACHE_BUFFER_SIZE_LIMIT) {
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buffer = (char *)realloc(buffer, buffer_size);
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memset(buffer, 0, buffer_size);
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}
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} while (res == -2);
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if (res == 0) {
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va_copy(ap_new, ap);
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res = cache_info->unmarshal_func(buffer, buffer_size, retval,
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ap_new, cache_info->mdata);
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va_end(ap_new);
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if (res != NS_SUCCESS) {
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free(buffer);
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return (res);
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} else
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res = 0;
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} else {
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free(buffer);
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__close_cached_mp_read_session(rs);
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rs = INVALID_CACHED_MP_READ_SESSION;
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cache_info->set_mp_rs_func(rs);
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return (res == -1 ? NS_RETURN : NS_UNAVAIL);
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}
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free(buffer);
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return (res == 0 ? NS_SUCCESS : NS_NOTFOUND);
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}
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int
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__nss_mp_cache_write(void *retval, void *mdata, va_list ap)
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{
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struct cached_connection_params params;
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cached_mp_write_session ws;
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char *buffer;
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size_t buffer_size;
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nss_cache_info const *cache_info;
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nss_cache_data *cache_data;
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va_list ap_new;
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int res;
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cache_data = (nss_cache_data *)mdata;
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cache_info = cache_data->info;
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ws = cache_info->get_mp_ws_func();
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if (ws == INVALID_CACHED_MP_WRITE_SESSION) {
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memset(¶ms, 0, sizeof(struct cached_connection_params));
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params.socket_path = CACHED_SOCKET_PATH;
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ws = __open_cached_mp_write_session(¶ms,
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cache_info->entry_name);
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if (ws == INVALID_CACHED_MP_WRITE_SESSION)
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return (NS_UNAVAIL);
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cache_info->set_mp_ws_func(ws);
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}
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buffer_size = NSS_CACHE_BUFFER_INITIAL_SIZE;
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buffer = (char *)malloc(NSS_CACHE_BUFFER_INITIAL_SIZE);
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memset(buffer, 0, NSS_CACHE_BUFFER_INITIAL_SIZE);
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do {
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size_t size;
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size = buffer_size;
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va_copy(ap_new, ap);
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res = cache_info->marshal_func(buffer, &size, retval, ap_new,
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cache_info->mdata);
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va_end(ap_new);
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if (res == NS_RETURN) {
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if (buffer_size > NSS_CACHE_BUFFER_SIZE_LIMIT)
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break;
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buffer_size <<= 1;
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buffer = (char *)realloc(buffer, buffer_size);
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memset(buffer, 0, buffer_size);
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}
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} while (res == NS_RETURN);
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if (res != NS_SUCCESS) {
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free(buffer);
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return (res);
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}
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res = __cached_mp_write(ws, buffer, buffer_size);
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free(buffer);
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return (res == 0 ? NS_SUCCESS : NS_UNAVAIL);
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}
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int
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__nss_mp_cache_write_submit(void *retval, void *mdata, va_list ap)
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{
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cached_mp_write_session ws;
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nss_cache_info const *cache_info;
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nss_cache_data *cache_data;
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cache_data = (nss_cache_data *)mdata;
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cache_info = cache_data->info;
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ws = cache_info->get_mp_ws_func();
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if (ws != INVALID_CACHED_MP_WRITE_SESSION) {
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__close_cached_mp_write_session(ws);
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ws = INVALID_CACHED_MP_WRITE_SESSION;
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cache_info->set_mp_ws_func(ws);
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}
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return (NS_UNAVAIL);
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}
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int
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__nss_mp_cache_end(void *retval, void *mdata, va_list ap)
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{
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cached_mp_write_session ws;
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cached_mp_read_session rs;
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nss_cache_info const *cache_info;
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nss_cache_data *cache_data;
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cache_data = (nss_cache_data *)mdata;
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cache_info = cache_data->info;
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ws = cache_info->get_mp_ws_func();
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if (ws != INVALID_CACHED_MP_WRITE_SESSION) {
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__abandon_cached_mp_write_session(ws);
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ws = INVALID_CACHED_MP_WRITE_SESSION;
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cache_info->set_mp_ws_func(ws);
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}
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rs = cache_info->get_mp_rs_func();
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if (rs != INVALID_CACHED_MP_READ_SESSION) {
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__close_cached_mp_read_session(rs);
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rs = INVALID_CACHED_MP_READ_SESSION;
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cache_info->set_mp_rs_func(rs);
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}
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return (NS_UNAVAIL);
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}
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