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Diffstat (limited to 'source/luametatex/source/luacore/luasocket/src/tcp.c')
-rw-r--r--source/luametatex/source/luacore/luasocket/src/tcp.c471
1 files changed, 471 insertions, 0 deletions
diff --git a/source/luametatex/source/luacore/luasocket/src/tcp.c b/source/luametatex/source/luacore/luasocket/src/tcp.c
new file mode 100644
index 000000000..5876bfb87
--- /dev/null
+++ b/source/luametatex/source/luacore/luasocket/src/tcp.c
@@ -0,0 +1,471 @@
+/*=========================================================================*\
+* TCP object
+* LuaSocket toolkit
+\*=========================================================================*/
+#include "luasocket.h"
+
+#include "auxiliar.h"
+#include "socket.h"
+#include "inet.h"
+#include "options.h"
+#include "tcp.h"
+
+#include <string.h>
+
+/*=========================================================================*\
+* Internal function prototypes
+\*=========================================================================*/
+static int global_create(lua_State *L);
+static int global_create4(lua_State *L);
+static int global_create6(lua_State *L);
+static int global_connect(lua_State *L);
+static int meth_connect(lua_State *L);
+static int meth_listen(lua_State *L);
+static int meth_getfamily(lua_State *L);
+static int meth_bind(lua_State *L);
+static int meth_send(lua_State *L);
+static int meth_getstats(lua_State *L);
+static int meth_setstats(lua_State *L);
+static int meth_getsockname(lua_State *L);
+static int meth_getpeername(lua_State *L);
+static int meth_shutdown(lua_State *L);
+static int meth_receive(lua_State *L);
+static int meth_accept(lua_State *L);
+static int meth_close(lua_State *L);
+static int meth_getoption(lua_State *L);
+static int meth_setoption(lua_State *L);
+static int meth_gettimeout(lua_State *L);
+static int meth_settimeout(lua_State *L);
+static int meth_getfd(lua_State *L);
+static int meth_setfd(lua_State *L);
+static int meth_dirty(lua_State *L);
+
+/* tcp object methods */
+static luaL_Reg tcp_methods[] = {
+ {"__gc", meth_close},
+ {"__tostring", auxiliar_tostring},
+ {"accept", meth_accept},
+ {"bind", meth_bind},
+ {"close", meth_close},
+ {"connect", meth_connect},
+ {"dirty", meth_dirty},
+ {"getfamily", meth_getfamily},
+ {"getfd", meth_getfd},
+ {"getoption", meth_getoption},
+ {"getpeername", meth_getpeername},
+ {"getsockname", meth_getsockname},
+ {"getstats", meth_getstats},
+ {"setstats", meth_setstats},
+ {"listen", meth_listen},
+ {"receive", meth_receive},
+ {"send", meth_send},
+ {"setfd", meth_setfd},
+ {"setoption", meth_setoption},
+ {"setpeername", meth_connect},
+ {"setsockname", meth_bind},
+ {"settimeout", meth_settimeout},
+ {"gettimeout", meth_gettimeout},
+ {"shutdown", meth_shutdown},
+ {NULL, NULL}
+};
+
+/* socket option handlers */
+static t_opt optget[] = {
+ {"keepalive", opt_get_keepalive},
+ {"reuseaddr", opt_get_reuseaddr},
+ {"reuseport", opt_get_reuseport},
+ {"tcp-nodelay", opt_get_tcp_nodelay},
+#ifdef TCP_KEEPIDLE
+ {"tcp-keepidle", opt_get_tcp_keepidle},
+#endif
+#ifdef TCP_KEEPCNT
+ {"tcp-keepcnt", opt_get_tcp_keepcnt},
+#endif
+#ifdef TCP_KEEPINTVL
+ {"tcp-keepintvl", opt_get_tcp_keepintvl},
+#endif
+ {"linger", opt_get_linger},
+ {"error", opt_get_error},
+ {"recv-buffer-size", opt_get_recv_buf_size},
+ {"send-buffer-size", opt_get_send_buf_size},
+ {NULL, NULL}
+};
+
+static t_opt optset[] = {
+ {"keepalive", opt_set_keepalive},
+ {"reuseaddr", opt_set_reuseaddr},
+ {"reuseport", opt_set_reuseport},
+ {"tcp-nodelay", opt_set_tcp_nodelay},
+#ifdef TCP_KEEPIDLE
+ {"tcp-keepidle", opt_set_tcp_keepidle},
+#endif
+#ifdef TCP_KEEPCNT
+ {"tcp-keepcnt", opt_set_tcp_keepcnt},
+#endif
+#ifdef TCP_KEEPINTVL
+ {"tcp-keepintvl", opt_set_tcp_keepintvl},
+#endif
+ {"ipv6-v6only", opt_set_ip6_v6only},
+ {"linger", opt_set_linger},
+ {"recv-buffer-size", opt_set_recv_buf_size},
+ {"send-buffer-size", opt_set_send_buf_size},
+ {NULL, NULL}
+};
+
+/* functions in library namespace */
+static luaL_Reg func[] = {
+ {"tcp", global_create},
+ {"tcp4", global_create4},
+ {"tcp6", global_create6},
+ {"connect", global_connect},
+ {NULL, NULL}
+};
+
+/*-------------------------------------------------------------------------*\
+* Initializes module
+\*-------------------------------------------------------------------------*/
+int tcp_open(lua_State *L)
+{
+ /* create classes */
+ auxiliar_newclass(L, "tcp{master}", tcp_methods);
+ auxiliar_newclass(L, "tcp{client}", tcp_methods);
+ auxiliar_newclass(L, "tcp{server}", tcp_methods);
+ /* create class groups */
+ auxiliar_add2group(L, "tcp{master}", "tcp{any}");
+ auxiliar_add2group(L, "tcp{client}", "tcp{any}");
+ auxiliar_add2group(L, "tcp{server}", "tcp{any}");
+ /* define library functions */
+ luaL_setfuncs(L, func, 0);
+ return 0;
+}
+
+/*=========================================================================*\
+* Lua methods
+\*=========================================================================*/
+/*-------------------------------------------------------------------------*\
+* Just call buffered IO methods
+\*-------------------------------------------------------------------------*/
+static int meth_send(lua_State *L) {
+ p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{client}", 1);
+ return buffer_meth_send(L, &tcp->buf);
+}
+
+static int meth_receive(lua_State *L) {
+ p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{client}", 1);
+ return buffer_meth_receive(L, &tcp->buf);
+}
+
+static int meth_getstats(lua_State *L) {
+ p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{client}", 1);
+ return buffer_meth_getstats(L, &tcp->buf);
+}
+
+static int meth_setstats(lua_State *L) {
+ p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{client}", 1);
+ return buffer_meth_setstats(L, &tcp->buf);
+}
+
+/*-------------------------------------------------------------------------*\
+* Just call option handler
+\*-------------------------------------------------------------------------*/
+static int meth_getoption(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ return opt_meth_getoption(L, optget, &tcp->sock);
+}
+
+static int meth_setoption(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ return opt_meth_setoption(L, optset, &tcp->sock);
+}
+
+/*-------------------------------------------------------------------------*\
+* Select support methods
+\*-------------------------------------------------------------------------*/
+static int meth_getfd(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ lua_pushnumber(L, (int) tcp->sock);
+ return 1;
+}
+
+/* this is very dangerous, but can be handy for those that are brave enough */
+static int meth_setfd(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ tcp->sock = (t_socket) luaL_checknumber(L, 2);
+ return 0;
+}
+
+static int meth_dirty(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ lua_pushboolean(L, !buffer_isempty(&tcp->buf));
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Waits for and returns a client object attempting connection to the
+* server object
+\*-------------------------------------------------------------------------*/
+static int meth_accept(lua_State *L)
+{
+ p_tcp server = (p_tcp) auxiliar_checkclass(L, "tcp{server}", 1);
+ p_timeout tm = timeout_markstart(&server->tm);
+ t_socket sock;
+ const char *err = inet_tryaccept(&server->sock, server->family, &sock, tm);
+ /* if successful, push client socket */
+ if (err == NULL) {
+ p_tcp clnt = (p_tcp) lua_newuserdata(L, sizeof(t_tcp));
+ auxiliar_setclass(L, "tcp{client}", -1);
+ /* initialize structure fields */
+ memset(clnt, 0, sizeof(t_tcp));
+ socket_setnonblocking(&sock);
+ clnt->sock = sock;
+ io_init(&clnt->io, (p_send) socket_send, (p_recv) socket_recv,
+ (p_error) socket_ioerror, &clnt->sock);
+ timeout_init(&clnt->tm, -1, -1);
+ buffer_init(&clnt->buf, &clnt->io, &clnt->tm);
+ clnt->family = server->family;
+ return 1;
+ } else {
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Binds an object to an address
+\*-------------------------------------------------------------------------*/
+static int meth_bind(lua_State *L) {
+ p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{master}", 1);
+ const char *address = luaL_checkstring(L, 2);
+ const char *port = luaL_checkstring(L, 3);
+ const char *err;
+ struct addrinfo bindhints;
+ memset(&bindhints, 0, sizeof(bindhints));
+ bindhints.ai_socktype = SOCK_STREAM;
+ bindhints.ai_family = tcp->family;
+ bindhints.ai_flags = AI_PASSIVE;
+ err = inet_trybind(&tcp->sock, &tcp->family, address, port, &bindhints);
+ if (err) {
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Turns a master tcp object into a client object.
+\*-------------------------------------------------------------------------*/
+static int meth_connect(lua_State *L) {
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ const char *address = luaL_checkstring(L, 2);
+ const char *port = luaL_checkstring(L, 3);
+ struct addrinfo connecthints;
+ const char *err;
+ memset(&connecthints, 0, sizeof(connecthints));
+ connecthints.ai_socktype = SOCK_STREAM;
+ /* make sure we try to connect only to the same family */
+ connecthints.ai_family = tcp->family;
+ timeout_markstart(&tcp->tm);
+ err = inet_tryconnect(&tcp->sock, &tcp->family, address, port,
+ &tcp->tm, &connecthints);
+ /* have to set the class even if it failed due to non-blocking connects */
+ auxiliar_setclass(L, "tcp{client}", 1);
+ if (err) {
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Closes socket used by object
+\*-------------------------------------------------------------------------*/
+static int meth_close(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ socket_destroy(&tcp->sock);
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Returns family as string
+\*-------------------------------------------------------------------------*/
+static int meth_getfamily(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ if (tcp->family == AF_INET6) {
+ lua_pushliteral(L, "inet6");
+ return 1;
+ } else if (tcp->family == AF_INET) {
+ lua_pushliteral(L, "inet4");
+ return 1;
+ } else {
+ lua_pushliteral(L, "inet4");
+ return 1;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Puts the sockt in listen mode
+\*-------------------------------------------------------------------------*/
+static int meth_listen(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{master}", 1);
+ int backlog = (int) luaL_optnumber(L, 2, 32);
+ int err = socket_listen(&tcp->sock, backlog);
+ if (err != IO_DONE) {
+ lua_pushnil(L);
+ lua_pushstring(L, socket_strerror(err));
+ return 2;
+ }
+ /* turn master object into a server object */
+ auxiliar_setclass(L, "tcp{server}", 1);
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Shuts the connection down partially
+\*-------------------------------------------------------------------------*/
+static int meth_shutdown(lua_State *L)
+{
+ /* SHUT_RD, SHUT_WR, SHUT_RDWR have the value 0, 1, 2, so we can use method index directly */
+ static const char* methods[] = { "receive", "send", "both", NULL };
+ p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{client}", 1);
+ int how = luaL_checkoption(L, 2, "both", methods);
+ socket_shutdown(&tcp->sock, how);
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Just call inet methods
+\*-------------------------------------------------------------------------*/
+static int meth_getpeername(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ return inet_meth_getpeername(L, &tcp->sock, tcp->family);
+}
+
+static int meth_getsockname(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ return inet_meth_getsockname(L, &tcp->sock, tcp->family);
+}
+
+/*-------------------------------------------------------------------------*\
+* Just call tm methods
+\*-------------------------------------------------------------------------*/
+static int meth_settimeout(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ return timeout_meth_settimeout(L, &tcp->tm);
+}
+
+static int meth_gettimeout(lua_State *L)
+{
+ p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
+ return timeout_meth_gettimeout(L, &tcp->tm);
+}
+
+/*=========================================================================*\
+* Library functions
+\*=========================================================================*/
+/*-------------------------------------------------------------------------*\
+* Creates a master tcp object
+\*-------------------------------------------------------------------------*/
+static int tcp_create(lua_State *L, int family) {
+ p_tcp tcp = (p_tcp) lua_newuserdata(L, sizeof(t_tcp));
+ memset(tcp, 0, sizeof(t_tcp));
+ /* set its type as master object */
+ auxiliar_setclass(L, "tcp{master}", -1);
+ /* if family is AF_UNSPEC, we leave the socket invalid and
+ * store AF_UNSPEC into family. This will allow it to later be
+ * replaced with an AF_INET6 or AF_INET socket upon first use. */
+ tcp->sock = SOCKET_INVALID;
+ tcp->family = family;
+ io_init(&tcp->io, (p_send) socket_send, (p_recv) socket_recv,
+ (p_error) socket_ioerror, &tcp->sock);
+ timeout_init(&tcp->tm, -1, -1);
+ buffer_init(&tcp->buf, &tcp->io, &tcp->tm);
+ if (family != AF_UNSPEC) {
+ const char *err = inet_trycreate(&tcp->sock, family, SOCK_STREAM, 0);
+ if (err != NULL) {
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+ socket_setnonblocking(&tcp->sock);
+ }
+ return 1;
+}
+
+static int global_create(lua_State *L) {
+ return tcp_create(L, AF_UNSPEC);
+}
+
+static int global_create4(lua_State *L) {
+ return tcp_create(L, AF_INET);
+}
+
+static int global_create6(lua_State *L) {
+ return tcp_create(L, AF_INET6);
+}
+
+static int global_connect(lua_State *L) {
+ const char *remoteaddr = luaL_checkstring(L, 1);
+ const char *remoteserv = luaL_checkstring(L, 2);
+ const char *localaddr = luaL_optstring(L, 3, NULL);
+ const char *localserv = luaL_optstring(L, 4, "0");
+ int family = inet_optfamily(L, 5, "unspec");
+ p_tcp tcp = (p_tcp) lua_newuserdata(L, sizeof(t_tcp));
+ struct addrinfo bindhints, connecthints;
+ const char *err = NULL;
+ /* initialize tcp structure */
+ memset(tcp, 0, sizeof(t_tcp));
+ io_init(&tcp->io, (p_send) socket_send, (p_recv) socket_recv,
+ (p_error) socket_ioerror, &tcp->sock);
+ timeout_init(&tcp->tm, -1, -1);
+ buffer_init(&tcp->buf, &tcp->io, &tcp->tm);
+ tcp->sock = SOCKET_INVALID;
+ tcp->family = AF_UNSPEC;
+ /* allow user to pick local address and port */
+ memset(&bindhints, 0, sizeof(bindhints));
+ bindhints.ai_socktype = SOCK_STREAM;
+ bindhints.ai_family = family;
+ bindhints.ai_flags = AI_PASSIVE;
+ if (localaddr) {
+ err = inet_trybind(&tcp->sock, &tcp->family, localaddr,
+ localserv, &bindhints);
+ if (err) {
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+ }
+ /* try to connect to remote address and port */
+ memset(&connecthints, 0, sizeof(connecthints));
+ connecthints.ai_socktype = SOCK_STREAM;
+ /* make sure we try to connect only to the same family */
+ connecthints.ai_family = tcp->family;
+ err = inet_tryconnect(&tcp->sock, &tcp->family, remoteaddr, remoteserv,
+ &tcp->tm, &connecthints);
+ if (err) {
+ socket_destroy(&tcp->sock);
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+ auxiliar_setclass(L, "tcp{client}", -1);
+ return 1;
+}
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