diff options
Diffstat (limited to 'lib/base/tcpsocket.cpp')
| -rw-r--r-- | lib/base/tcpsocket.cpp | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/lib/base/tcpsocket.cpp b/lib/base/tcpsocket.cpp new file mode 100644 index 0000000..a9390e5 --- /dev/null +++ b/lib/base/tcpsocket.cpp @@ -0,0 +1,211 @@ +/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */ + +#include "base/tcpsocket.hpp" +#include "base/logger.hpp" +#include "base/utility.hpp" +#include "base/exception.hpp" +#include <boost/exception/errinfo_api_function.hpp> +#include <boost/exception/errinfo_errno.hpp> +#include <iostream> + +using namespace icinga; + +/** + * Creates a socket and binds it to the specified service. + * + * @param service The service. + * @param family The address family for the socket. + */ +void TcpSocket::Bind(const String& service, int family) +{ + Bind(String(), service, family); +} + +/** + * Creates a socket and binds it to the specified node and service. + * + * @param node The node. + * @param service The service. + * @param family The address family for the socket. + */ +void TcpSocket::Bind(const String& node, const String& service, int family) +{ + addrinfo hints; + addrinfo *result; + int error; + const char *func; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = family; + hints.ai_socktype = SOCK_STREAM; + hints.ai_protocol = IPPROTO_TCP; + hints.ai_flags = AI_PASSIVE; + + int rc = getaddrinfo(node.IsEmpty() ? nullptr : node.CStr(), + service.CStr(), &hints, &result); + + if (rc != 0) { + Log(LogCritical, "TcpSocket") + << "getaddrinfo() failed with error code " << rc << ", \"" << gai_strerror(rc) << "\""; + + BOOST_THROW_EXCEPTION(socket_error() + << boost::errinfo_api_function("getaddrinfo") + << errinfo_getaddrinfo_error(rc)); + } + + int fd = INVALID_SOCKET; + + for (addrinfo *info = result; info != nullptr; info = info->ai_next) { + fd = socket(info->ai_family, info->ai_socktype, info->ai_protocol); + + if (fd == INVALID_SOCKET) { +#ifdef _WIN32 + error = WSAGetLastError(); +#else /* _WIN32 */ + error = errno; +#endif /* _WIN32 */ + func = "socket"; + + continue; + } + + const int optFalse = 0; + setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char *>(&optFalse), sizeof(optFalse)); + + const int optTrue = 1; + setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, reinterpret_cast<const char *>(&optTrue), sizeof(optTrue)); +#ifdef SO_REUSEPORT + setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, reinterpret_cast<const char *>(&optTrue), sizeof(optTrue)); +#endif /* SO_REUSEPORT */ + + int rc = bind(fd, info->ai_addr, info->ai_addrlen); + + if (rc < 0) { +#ifdef _WIN32 + error = WSAGetLastError(); +#else /* _WIN32 */ + error = errno; +#endif /* _WIN32 */ + func = "bind"; + + closesocket(fd); + + continue; + } + + SetFD(fd); + + break; + } + + freeaddrinfo(result); + + if (GetFD() == INVALID_SOCKET) { + Log(LogCritical, "TcpSocket") + << "Invalid socket: " << Utility::FormatErrorNumber(error); + +#ifndef _WIN32 + BOOST_THROW_EXCEPTION(socket_error() + << boost::errinfo_api_function(func) + << boost::errinfo_errno(error)); +#else /* _WIN32 */ + BOOST_THROW_EXCEPTION(socket_error() + << boost::errinfo_api_function(func) + << errinfo_win32_error(error)); +#endif /* _WIN32 */ + } +} + +/** + * Creates a socket and connects to the specified node and service. + * + * @param node The node. + * @param service The service. + */ +void TcpSocket::Connect(const String& node, const String& service) +{ + addrinfo hints; + addrinfo *result; + int error; + const char *func; + + memset(&hints, 0, sizeof(hints)); + hints.ai_family = AF_UNSPEC; + hints.ai_socktype = SOCK_STREAM; + hints.ai_protocol = IPPROTO_TCP; + + int rc = getaddrinfo(node.CStr(), service.CStr(), &hints, &result); + + if (rc != 0) { + Log(LogCritical, "TcpSocket") + << "getaddrinfo() failed with error code " << rc << ", \"" << gai_strerror(rc) << "\""; + + BOOST_THROW_EXCEPTION(socket_error() + << boost::errinfo_api_function("getaddrinfo") + << errinfo_getaddrinfo_error(rc)); + } + + SOCKET fd = INVALID_SOCKET; + + for (addrinfo *info = result; info != nullptr; info = info->ai_next) { + fd = socket(info->ai_family, info->ai_socktype, info->ai_protocol); + + if (fd == INVALID_SOCKET) { +#ifdef _WIN32 + error = WSAGetLastError(); +#else /* _WIN32 */ + error = errno; +#endif /* _WIN32 */ + func = "socket"; + + continue; + } + + const int optTrue = 1; + if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, reinterpret_cast<const char *>(&optTrue), sizeof(optTrue)) != 0) { +#ifdef _WIN32 + error = WSAGetLastError(); +#else /* _WIN32 */ + error = errno; +#endif /* _WIN32 */ + Log(LogWarning, "TcpSocket") + << "setsockopt() unable to enable TCP keep-alives with error code " << rc; + } + + rc = connect(fd, info->ai_addr, info->ai_addrlen); + + if (rc < 0) { +#ifdef _WIN32 + error = WSAGetLastError(); +#else /* _WIN32 */ + error = errno; +#endif /* _WIN32 */ + func = "connect"; + + closesocket(fd); + + continue; + } + + SetFD(fd); + + break; + } + + freeaddrinfo(result); + + if (GetFD() == INVALID_SOCKET) { + Log(LogCritical, "TcpSocket") + << "Invalid socket: " << Utility::FormatErrorNumber(error); + +#ifndef _WIN32 + BOOST_THROW_EXCEPTION(socket_error() + << boost::errinfo_api_function(func) + << boost::errinfo_errno(error)); +#else /* _WIN32 */ + BOOST_THROW_EXCEPTION(socket_error() + << boost::errinfo_api_function(func) + << errinfo_win32_error(error)); +#endif /* _WIN32 */ + } +} |