2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
136 lines
4.2 KiB
C++
136 lines
4.2 KiB
C++
//===-- Acceptor.cpp --------------------------------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Acceptor.h"
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/ScopedPrinter.h"
|
|
|
|
#include "lldb/Host/ConnectionFileDescriptor.h"
|
|
#include "lldb/Host/common/TCPSocket.h"
|
|
#include "lldb/Utility/StreamString.h"
|
|
#include "lldb/Utility/UriParser.h"
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
using namespace lldb_private::lldb_server;
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
struct SocketScheme {
|
|
const char *m_scheme;
|
|
const Socket::SocketProtocol m_protocol;
|
|
};
|
|
|
|
SocketScheme socket_schemes[] = {
|
|
{"tcp", Socket::ProtocolTcp},
|
|
{"udp", Socket::ProtocolUdp},
|
|
{"unix", Socket::ProtocolUnixDomain},
|
|
{"unix-abstract", Socket::ProtocolUnixAbstract},
|
|
};
|
|
|
|
bool FindProtocolByScheme(const char *scheme,
|
|
Socket::SocketProtocol &protocol) {
|
|
for (auto s : socket_schemes) {
|
|
if (!strcmp(s.m_scheme, scheme)) {
|
|
protocol = s.m_protocol;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
const char *FindSchemeByProtocol(const Socket::SocketProtocol protocol) {
|
|
for (auto s : socket_schemes) {
|
|
if (s.m_protocol == protocol)
|
|
return s.m_scheme;
|
|
}
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
Status Acceptor::Listen(int backlog) {
|
|
return m_listener_socket_up->Listen(StringRef(m_name), backlog);
|
|
}
|
|
|
|
Status Acceptor::Accept(const bool child_processes_inherit, Connection *&conn) {
|
|
Socket *conn_socket = nullptr;
|
|
auto error = m_listener_socket_up->Accept(conn_socket);
|
|
if (error.Success())
|
|
conn = new ConnectionFileDescriptor(conn_socket);
|
|
|
|
return error;
|
|
}
|
|
|
|
Socket::SocketProtocol Acceptor::GetSocketProtocol() const {
|
|
return m_listener_socket_up->GetSocketProtocol();
|
|
}
|
|
|
|
const char *Acceptor::GetSocketScheme() const {
|
|
return FindSchemeByProtocol(GetSocketProtocol());
|
|
}
|
|
|
|
std::string Acceptor::GetLocalSocketId() const { return m_local_socket_id(); }
|
|
|
|
std::unique_ptr<Acceptor> Acceptor::Create(StringRef name,
|
|
const bool child_processes_inherit,
|
|
Status &error) {
|
|
error.Clear();
|
|
|
|
Socket::SocketProtocol socket_protocol = Socket::ProtocolUnixDomain;
|
|
int port;
|
|
StringRef scheme, host, path;
|
|
// Try to match socket name as URL - e.g., tcp://localhost:5555
|
|
if (UriParser::Parse(name, scheme, host, port, path)) {
|
|
if (!FindProtocolByScheme(scheme.str().c_str(), socket_protocol))
|
|
error.SetErrorStringWithFormat("Unknown protocol scheme \"%s\"",
|
|
scheme.str().c_str());
|
|
else
|
|
name = name.drop_front(scheme.size() + strlen("://"));
|
|
} else {
|
|
std::string host_str;
|
|
std::string port_str;
|
|
int32_t port = INT32_MIN;
|
|
// Try to match socket name as $host:port - e.g., localhost:5555
|
|
if (Socket::DecodeHostAndPort(name, host_str, port_str, port, nullptr))
|
|
socket_protocol = Socket::ProtocolTcp;
|
|
}
|
|
|
|
if (error.Fail())
|
|
return std::unique_ptr<Acceptor>();
|
|
|
|
std::unique_ptr<Socket> listener_socket_up =
|
|
Socket::Create(socket_protocol, child_processes_inherit, error);
|
|
|
|
LocalSocketIdFunc local_socket_id;
|
|
if (error.Success()) {
|
|
if (listener_socket_up->GetSocketProtocol() == Socket::ProtocolTcp) {
|
|
TCPSocket *tcp_socket =
|
|
static_cast<TCPSocket *>(listener_socket_up.get());
|
|
local_socket_id = [tcp_socket]() {
|
|
auto local_port = tcp_socket->GetLocalPortNumber();
|
|
return (local_port != 0) ? llvm::to_string(local_port) : "";
|
|
};
|
|
} else {
|
|
const std::string socket_name = name;
|
|
local_socket_id = [socket_name]() { return socket_name; };
|
|
}
|
|
|
|
return std::unique_ptr<Acceptor>(
|
|
new Acceptor(std::move(listener_socket_up), name, local_socket_id));
|
|
}
|
|
|
|
return std::unique_ptr<Acceptor>();
|
|
}
|
|
|
|
Acceptor::Acceptor(std::unique_ptr<Socket> &&listener_socket, StringRef name,
|
|
const LocalSocketIdFunc &local_socket_id)
|
|
: m_listener_socket_up(std::move(listener_socket)), m_name(name.str()),
|
|
m_local_socket_id(local_socket_id) {}
|