You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
4.2 KiB
136 lines
4.2 KiB
//===-- 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 = std::string(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) {}
|