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#include "common.hh"
#include "inet.hh"
#include "io.hh"
#include "logger.hh"
#include <algorithm>
#include <errno.h>
#include <netdb.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
namespace inet {
unique_fd accept(Logger* logger, int fd, bool make_nonblock) {
#if HAVE_ACCEPT4
unique_fd ret(accept4(fd, nullptr, nullptr,
make_nonblock ? SOCK_NONBLOCK : 0));
if (!ret)
logger->warn("accept: %s", strerror(errno));
return ret;
#else
unique_fd ret(::accept(fd, nullptr, nullptr));
if (ret) {
if (make_nonblock && !io::make_nonblocking(ret.get())) {
logger->warn("make nonblock failed: %s", strerror(errno));
ret.reset();
}
} else {
logger->warn("accept: %s", strerror(errno));
}
return ret;
#endif
}
bool bind_and_listen(Logger* logger,
std::string const& addr,
std::string const& port,
std::vector<unique_fd>* out) {
out->clear();
struct addrinfo hints = {};
struct addrinfo* ret;
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_V4MAPPED | AI_ADDRCONFIG | AI_PASSIVE;
auto err = getaddrinfo(addr.empty() ? nullptr : addr.c_str(),
port.c_str(), &hints, &ret);
if (err) {
logger->warn("%s:%s: getaddrinfo: %s",
addr.c_str(), port.c_str(), gai_strerror(err));
return false;
}
for (auto* rp = ret; rp != nullptr; rp = rp->ai_next) {
unique_fd fd(socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol));
if (!fd)
continue;
if (bind(fd.get(), rp->ai_addr, rp->ai_addrlen)) {
logger->warn("%s:%s: bind: %s",
addr.c_str(), port.c_str(), strerror(errno));
continue;
}
if (listen(fd.get(), 4096)) {
logger->warn("%s:%s: listen: %s",
addr.c_str(), port.c_str(), strerror(errno));
continue;
}
out->emplace_back(std::move(fd));
}
freeaddrinfo(ret);
return !out->empty();
}
} // namespace inet
namespace unix {
unique_fd bind_and_listen(Logger* logger,
std::string_view path) {
unique_fd fd(socket(AF_UNIX, SOCK_STREAM, 0));
if (fd) {
sockaddr_un addr;
if (path.size() >= sizeof(addr.sun_path)) {
logger->warn("%.*s: Too long path",
static_cast<int>(path.size()), path.data());
return unique_fd();
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
std::copy_n(path.data(), path.size(), addr.sun_path);
addr.sun_path[path.size()] = '\0';
if (bind(fd.get(), reinterpret_cast<struct sockaddr*>(&addr),
sizeof(addr))) {
logger->warn("%.*s: bind: %s",
static_cast<int>(path.size()), path.data(), strerror(errno));
return unique_fd();
}
if (listen(fd.get(), 4096)) {
logger->warn("%.*s: listen: %s",
static_cast<int>(path.size()), path.data(), strerror(errno));
return unique_fd();
}
}
return fd;
}
} // namespace unix
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