97206d5727
This renames the LLDB error class to Status, as discussed on the lldb-dev mailing list. A change of this magnitude cannot easily be done without find and replace, but that has potential to catch unwanted occurrences of common strings such as "Error". Every effort was made to find all the obvious things such as the word "Error" appearing in a string, etc, but it's possible there are still some lingering occurences left around. Hopefully nothing too serious. llvm-svn: 302872
137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
//===-- Acceptor.cpp --------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "Acceptor.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/ScopedPrinter.h"
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#include "lldb/Host/ConnectionFileDescriptor.h"
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#include "lldb/Host/common/TCPSocket.h"
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#include "lldb/Utility/StreamString.h"
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#include "lldb/Utility/UriParser.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::lldb_server;
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using namespace llvm;
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namespace {
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struct SocketScheme {
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const char *m_scheme;
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const Socket::SocketProtocol m_protocol;
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};
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SocketScheme socket_schemes[] = {
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{"tcp", Socket::ProtocolTcp},
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{"udp", Socket::ProtocolUdp},
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{"unix", Socket::ProtocolUnixDomain},
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{"unix-abstract", Socket::ProtocolUnixAbstract},
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};
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bool FindProtocolByScheme(const char *scheme,
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Socket::SocketProtocol &protocol) {
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for (auto s : socket_schemes) {
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if (!strcmp(s.m_scheme, scheme)) {
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protocol = s.m_protocol;
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return true;
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}
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}
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return false;
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}
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const char *FindSchemeByProtocol(const Socket::SocketProtocol protocol) {
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for (auto s : socket_schemes) {
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if (s.m_protocol == protocol)
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return s.m_scheme;
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}
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return nullptr;
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}
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}
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Status Acceptor::Listen(int backlog) {
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return m_listener_socket_up->Listen(StringRef(m_name), backlog);
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}
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Status Acceptor::Accept(const bool child_processes_inherit, Connection *&conn) {
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Socket *conn_socket = nullptr;
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auto error = m_listener_socket_up->Accept(conn_socket);
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if (error.Success())
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conn = new ConnectionFileDescriptor(conn_socket);
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return error;
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}
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Socket::SocketProtocol Acceptor::GetSocketProtocol() const {
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return m_listener_socket_up->GetSocketProtocol();
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}
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const char *Acceptor::GetSocketScheme() const {
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return FindSchemeByProtocol(GetSocketProtocol());
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}
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std::string Acceptor::GetLocalSocketId() const { return m_local_socket_id(); }
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std::unique_ptr<Acceptor> Acceptor::Create(StringRef name,
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const bool child_processes_inherit,
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Status &error) {
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error.Clear();
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Socket::SocketProtocol socket_protocol = Socket::ProtocolUnixDomain;
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int port;
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StringRef scheme, host, path;
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// Try to match socket name as URL - e.g., tcp://localhost:5555
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if (UriParser::Parse(name, scheme, host, port, path)) {
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if (!FindProtocolByScheme(scheme.str().c_str(), socket_protocol))
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error.SetErrorStringWithFormat("Unknown protocol scheme \"%s\"",
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scheme.str().c_str());
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else
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name = name.drop_front(scheme.size() + strlen("://"));
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} else {
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std::string host_str;
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std::string port_str;
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int32_t port = INT32_MIN;
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// Try to match socket name as $host:port - e.g., localhost:5555
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if (Socket::DecodeHostAndPort(name, host_str, port_str, port, nullptr))
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socket_protocol = Socket::ProtocolTcp;
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}
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if (error.Fail())
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return std::unique_ptr<Acceptor>();
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std::unique_ptr<Socket> listener_socket_up =
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Socket::Create(socket_protocol, child_processes_inherit, error);
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LocalSocketIdFunc local_socket_id;
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if (error.Success()) {
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if (listener_socket_up->GetSocketProtocol() == Socket::ProtocolTcp) {
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TCPSocket *tcp_socket =
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static_cast<TCPSocket *>(listener_socket_up.get());
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local_socket_id = [tcp_socket]() {
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auto local_port = tcp_socket->GetLocalPortNumber();
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return (local_port != 0) ? llvm::to_string(local_port) : "";
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};
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} else {
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const std::string socket_name = name;
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local_socket_id = [socket_name]() { return socket_name; };
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}
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return std::unique_ptr<Acceptor>(
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new Acceptor(std::move(listener_socket_up), name, local_socket_id));
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}
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return std::unique_ptr<Acceptor>();
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}
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Acceptor::Acceptor(std::unique_ptr<Socket> &&listener_socket, StringRef name,
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const LocalSocketIdFunc &local_socket_id)
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: m_listener_socket_up(std::move(listener_socket)), m_name(name.str()),
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m_local_socket_id(local_socket_id) {}
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