/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2018, 2020 embedded brains GmbH (http://www.embedded-brains.de)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "client.h"
#ifdef _WIN32
#include <io.h>
#include <winsock2.h>
#else
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <unistd.h>
#endif
#include <fcntl.h>
#include <sys/stat.h>
#include <algorithm>
#include <cassert>
#include <cstring>
#include <ini.h>
static ssize_t ReadFile(int fd, void* buf, size_t n) {
return ::read(fd, buf, n);
}
static ssize_t ReadSocket(int fd, void* buf, size_t n) {
// This cast is necessary for Windows
return ::recv(fd, static_cast<char*>(buf), n, 0);
}
void FileDescriptor::Open(const char* file) {
assert(fd_ == -1);
int oflag = O_RDONLY;
#ifdef _WIN32
oflag |= O_BINARY;
#endif
fd_ = ::open(file, oflag);
if (fd_ < 0) {
throw ErrnoException(std::string("cannot open file '") + file + "'");
}
reader_ = ReadFile;
}
void FileDescriptor::Connect(const char* host, uint16_t port) {
assert(fd_ == -1);
fd_ = ::socket(PF_INET, SOCK_STREAM, 0);
if (fd_ < 0) {
throw ErrnoException("cannot open socket");
}
struct sockaddr_in in_addr;
std::memset(&in_addr, 0, sizeof(in_addr));
in_addr.sin_family = AF_INET;
in_addr.sin_port = htons(port);
in_addr.sin_addr.s_addr = inet_addr(host);
int rv = ::connect(fd_, (struct sockaddr*)&in_addr, sizeof(in_addr));
if (rv != 0) {
throw ErrnoException(std::string("cannot connect to ") + host + " port " +
std::to_string(port));
}
reader_ = ReadSocket;
}
void FileDescriptor::Destroy() {
if (fd_ != -1) {
int rv = ::close(fd_);
if (rv != 0) {
std::cerr << "close failed: " << strerror(errno) << std::endl;
}
}
}
const std::string ConfigFile::kNoError;
void ConfigFile::AddParser(const char* section, Parser parser, void* arg) {
parser_[section] = std::make_pair(parser, arg);
}
void ConfigFile::Parse(const char* file) {
int status = ini_parse(file, INIHandler, this);
if (status < 0) {
throw ErrnoException(std::string("cannot parse configuration file '") +
file + "'");
} else if (status > 0) {
throw std::runtime_error(
std::string("invalid line ") + std::to_string(status) +
" in configuration file '" + file + "': " + error_);
}
}
int ConfigFile::INIHandler(void* user,
const char* section,
const char* name,
const char* value) {
ConfigFile* self = static_cast<ConfigFile*>(user);
auto it = self->parser_.find(section);
if (it != self->parser_.end()) {
std::string error = (*it->second.first)(it->second.second, name, value);
if (error == kNoError) {
return 1;
}
self->error_ = error;
} else {
self->error_ = std::string("unknown section: ") + section;
}
return 0;
}
void Client::Flush() {
while (true) {
void* p = nullptr;
size_t n = 0;
for (auto filter : filters_) {
if (!filter->Run(&p, &n)) {
break;
}
}
if (n > 0) {
rtems_record_client_run(&base_, p, n);
} else {
break;
}
}
}
void Client::Run() {
uint64_t todo = UINT64_MAX;
if (limit_ != 0) {
todo = limit_;
}
while (stop_ == 0 && todo > 0) {
long buf[8192];
size_t m = std::min(static_cast<uint64_t>(sizeof(buf)), todo);
ssize_t n = input_.Read(buf, m);
if (n <= 0) {
break;
}
void* p = &buf[0];
size_t k = static_cast<size_t>(n);
for (auto filter : filters_) {
if (!filter->Run(&p, &k)) {
std::cerr << "error: input filter failure" << std::endl;
return;
}
}
rtems_record_client_run(&base_, p, k);
todo -= static_cast<size_t>(n);
}
Flush();
}
void Client::Destroy() {
input_.Destroy();
rtems_record_client_destroy(&base_);
}