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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Monkey HTTP Server
* ==================
* Copyright 2001-2017 Eduardo Silva <eduardo@monkey.io>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#ifdef _WIN32
#include <winsock2.h>
#else
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netdb.h>
#endif
#if defined (__linux__)
#include <sys/sendfile.h>
#endif
#include <monkey/mk_api.h>
int mk_liana_plugin_init(struct mk_plugin *plugin, char *confdir)
{
(void) confdir;
(void) plugin;
return 0;
}
int mk_liana_plugin_exit(struct mk_plugin *plugin)
{
(void) plugin;
return 0;
}
int mk_liana_read(struct mk_plugin *plugin, int socket_fd, void *buf, int count)
{
(void) plugin;
return recv(socket_fd, (void*)buf, count, 0);
}
int mk_liana_write(struct mk_plugin *plugin, int socket_fd, const void *buf, size_t count )
{
ssize_t bytes_sent = -1;
(void) plugin;
bytes_sent = send(socket_fd, buf, count, 0);
return bytes_sent;
}
int mk_liana_writev(struct mk_plugin *plugin, int socket_fd, struct mk_iov *mk_io)
{
ssize_t bytes_sent = -1;
(void) plugin;
bytes_sent = plugin->api->iov_send(socket_fd, mk_io);
return bytes_sent;
}
int mk_liana_close(struct mk_plugin *plugin, int socket_fd)
{
(void) plugin;
#ifdef _WIN32
return closesocket(socket_fd);
#else
return close(socket_fd);
#endif
}
int mk_liana_send_file(struct mk_plugin *plugin, int socket_fd, int file_fd, off_t *file_offset,
size_t file_count)
{
ssize_t ret = -1;
(void) plugin;
#if defined (__linux__)
ret = sendfile(socket_fd, file_fd, file_offset, file_count);
if (ret == -1 && errno != EAGAIN) {
PLUGIN_TRACE("[FD %i] error from sendfile(): %s",
socket_fd, strerror(errno));
}
return ret;
#elif defined (__APPLE__)
off_t offset = *file_offset;
off_t len = (off_t) file_count;
ret = sendfile(file_fd, socket_fd, offset, &len, NULL, 0);
if (ret == -1 && errno != EAGAIN) {
PLUGIN_TRACE("[FD %i] error from sendfile(): %s",
socket_fd, strerror(errno));
}
else if (len > 0) {
*file_offset += len;
return len;
}
return ret;
#elif defined (__FreeBSD__)
off_t offset = *file_offset;
off_t len = (off_t) file_count;
ret = sendfile(file_fd, socket_fd, offset, len, NULL, 0, 0);
if (ret == -1 && errno != EAGAIN) {
PLUGIN_TRACE("[FD %i] error from sendfile(): %s",
socket_fd, strerror(errno));
}
else if (len > 0) {
*file_offset += len;
return len;
}
return ret;
#else
#pragma message ("This is a terrible sendfile \"implementation\" and just a crutch")
ssize_t bytes_written = 0;
ssize_t to_be_sent = -1;
ssize_t send_ret = -1;
uint8_t temporary_buffer[1024];
if (NULL != file_offset) {
lseek(file_fd, *file_offset, SEEK_SET);
}
while (1) {
memset(temporary_buffer, 0, sizeof(temporary_buffer));
ret = read(file_fd, temporary_buffer, sizeof(temporary_buffer));
if (0 == ret)
{
return bytes_written;
}
else if (0 > ret)
{
return -1;
}
else if (0 < ret)
{
to_be_sent = ret;
while (to_be_sent > 0)
{
send_ret = send(file_fd, &temporary_buffer[ret - to_be_sent], to_be_sent, 0);
if (-1 == send_ret)
{
if (EAGAIN != errno &&
EWOULDBLOCK != errno)
{
return -1;
}
}
else
{
bytes_written += send_ret;
to_be_sent -= send_ret;
}
}
}
}
#endif
}
/* Network Layer plugin Callbacks */
struct mk_plugin_network mk_plugin_network_liana = {
.read = mk_liana_read,
.write = mk_liana_write,
.writev = mk_liana_writev,
.close = mk_liana_close,
.send_file = mk_liana_send_file,
.buffer_size = MK_REQUEST_CHUNK
};
struct mk_plugin mk_plugin_liana = {
/* Identification */
.shortname = "liana",
.name = "Liana Network Layer",
.version = MK_VERSION_STR,
.hooks = MK_PLUGIN_NETWORK_LAYER,
/* Init / Exit */
.init_plugin = mk_liana_plugin_init,
.exit_plugin = mk_liana_plugin_exit,
/* Init Levels */
.master_init = NULL,
.worker_init = NULL,
/* Type */
.network = &mk_plugin_network_liana,
/* Capabilities */
.capabilities = MK_CAP_SOCK_PLAIN
};
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