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Diffstat (limited to '')
| -rw-r--r-- | plugin/handler_socket/libhsclient/socket.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/plugin/handler_socket/libhsclient/socket.cpp b/plugin/handler_socket/libhsclient/socket.cpp new file mode 100644 index 00000000..f1cdc9fb --- /dev/null +++ b/plugin/handler_socket/libhsclient/socket.cpp @@ -0,0 +1,185 @@ + +// vim:sw=2:ai + +/* + * Copyright (C) 2010 DeNA Co.,Ltd.. All rights reserved. + * See COPYRIGHT.txt for details. + */ + +#include <my_global.h> + +#include <stdexcept> +#include <string.h> +#include <signal.h> +#include <sys/un.h> + +#include "socket.hpp" +#include "string_util.hpp" +#include "fatal.hpp" + +namespace dena { + +void +ignore_sigpipe() +{ + if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) { + fatal_abort("SIGPIPE SIG_IGN"); + } +} + +void +socket_args::set(const config& conf) +{ + timeout = conf.get_int("timeout", 600); + listen_backlog = conf.get_int("listen_backlog", 256); + std::string node = conf.get_str("host", ""); + std::string port = conf.get_str("port", ""); + if (!node.empty() || !port.empty()) { + if (family == AF_UNIX || node == "/") { + set_unix_domain(port.c_str()); + } else { + const char *nd = node.empty() ? 0 : node.c_str(); + if (resolve(nd, port.c_str()) != 0) { + fatal_abort("getaddrinfo failed: " + node + ":" + port); + } + } + } + sndbuf = conf.get_int("sndbuf", 0); + rcvbuf = conf.get_int("rcvbuf", 0); +} + +void +socket_args::set_unix_domain(const char *path) +{ + family = AF_UNIX; + addr = sockaddr_storage(); + addrlen = sizeof(sockaddr_un); + sockaddr_un *const ap = reinterpret_cast<sockaddr_un *>(&addr); + ap->sun_family = AF_UNIX; + strncpy(ap->sun_path, path, sizeof(ap->sun_path) - 1); +} + +int +socket_args::resolve(const char *node, const char *service) +{ + const int flags = (node == 0) ? AI_PASSIVE : 0; + auto_addrinfo ai; + addr = sockaddr_storage(); + addrlen = 0; + const int r = ai.resolve(node, service, flags, family, socktype, protocol); + if (r != 0) { + return r; + } + memcpy(&addr, ai.get()->ai_addr, ai.get()->ai_addrlen); + addrlen = ai.get()->ai_addrlen; + return 0; +} + +int +socket_set_options(auto_file& fd, const socket_args& args, std::string& err_r) +{ + if (args.timeout != 0 && !args.nonblocking) { + struct timeval tv; + tv.tv_sec = args.timeout; + tv.tv_usec = 0; + if (setsockopt(fd.get(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) != 0) { + return errno_string("setsockopt SO_RCVTIMEO", errno, err_r); + } + tv.tv_sec = args.timeout; + tv.tv_usec = 0; + if (setsockopt(fd.get(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)) != 0) { + return errno_string("setsockopt SO_RCVTIMEO", errno, err_r); + } + } + if (args.nonblocking && fcntl(fd.get(), F_SETFL, O_NONBLOCK) != 0) { + return errno_string("fcntl O_NONBLOCK", errno, err_r); + } + if (args.sndbuf != 0) { + const int v = args.sndbuf; + if (setsockopt(fd.get(), SOL_SOCKET, SO_SNDBUF, &v, sizeof(v)) != 0) { + return errno_string("setsockopt SO_SNDBUF", errno, err_r); + } + } + if (args.rcvbuf != 0) { + const int v = args.rcvbuf; + if (setsockopt(fd.get(), SOL_SOCKET, SO_RCVBUF, &v, sizeof(v)) != 0) { + return errno_string("setsockopt SO_RCVBUF", errno, err_r); + } + } + return 0; +} + +int +socket_open(auto_file& fd, const socket_args& args, std::string& err_r) +{ + fd.reset(socket(args.family, args.socktype, args.protocol)); + if (fd.get() < 0) { + return errno_string("socket", errno, err_r); + } + return socket_set_options(fd, args, err_r); +} + +int +socket_connect(auto_file& fd, const socket_args& args, std::string& err_r) +{ + int r = 0; + if ((r = socket_open(fd, args, err_r)) != 0) { + return r; + } + if (connect(fd.get(), reinterpret_cast<const sockaddr *>(&args.addr), + args.addrlen) != 0) { + if (!args.nonblocking || errno != EINPROGRESS) { + return errno_string("connect", errno, err_r); + } + } + return 0; +} + +int +socket_bind(auto_file& fd, const socket_args& args, std::string& err_r) +{ + fd.reset(socket(args.family, args.socktype, args.protocol)); + if (fd.get() < 0) { + return errno_string("socket", errno, err_r); + } + if (args.reuseaddr) { + if (args.family == AF_UNIX) { + const sockaddr_un *const ap = + reinterpret_cast<const sockaddr_un *>(&args.addr); + if (unlink(ap->sun_path) != 0 && errno != ENOENT) { + return errno_string("unlink uds", errno, err_r); + } + } else { + int v = 1; + if (setsockopt(fd.get(), SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) != 0) { + return errno_string("setsockopt SO_REUSEADDR", errno, err_r); + } + } + } + if (bind(fd.get(), reinterpret_cast<const sockaddr *>(&args.addr), + args.addrlen) != 0) { + return errno_string("bind", errno, err_r); + } + if (listen(fd.get(), args.listen_backlog) != 0) { + return errno_string("listen", errno, err_r); + } + if (args.nonblocking && fcntl(fd.get(), F_SETFL, O_NONBLOCK) != 0) { + return errno_string("fcntl O_NONBLOCK", errno, err_r); + } + return 0; +} + +int +socket_accept(int listen_fd, auto_file& fd, const socket_args& args, + sockaddr_storage& addr_r, size_socket& addrlen_r, std::string& err_r) +{ + fd.reset(accept(listen_fd, reinterpret_cast<sockaddr *>(&addr_r), + &addrlen_r)); + if (fd.get() < 0) { + return errno_string("accept", errno, err_r); + } + return socket_set_options(fd, args, err_r); +} + +}; + |