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Diffstat (limited to 'source/luametatex/source/luacore/luasocket/src/unixstream.c')
-rw-r--r--source/luametatex/source/luacore/luasocket/src/unixstream.c355
1 files changed, 355 insertions, 0 deletions
diff --git a/source/luametatex/source/luacore/luasocket/src/unixstream.c b/source/luametatex/source/luacore/luasocket/src/unixstream.c
new file mode 100644
index 000000000..02aced9c8
--- /dev/null
+++ b/source/luametatex/source/luacore/luasocket/src/unixstream.c
@@ -0,0 +1,355 @@
+/*=========================================================================*\
+* Unix domain socket stream sub module
+* LuaSocket toolkit
+\*=========================================================================*/
+#include "luasocket.h"
+
+#include "auxiliar.h"
+#include "socket.h"
+#include "options.h"
+#include "unixstream.h"
+
+#include <string.h>
+#include <sys/un.h>
+
+/*=========================================================================*\
+* Internal function prototypes
+\*=========================================================================*/
+static int global_create(lua_State *L);
+static int meth_connect(lua_State *L);
+static int meth_listen(lua_State *L);
+static int meth_bind(lua_State *L);
+static int meth_send(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_setoption(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);
+static int meth_getstats(lua_State *L);
+static int meth_setstats(lua_State *L);
+static int meth_getsockname(lua_State *L);
+
+static const char *unixstream_tryconnect(p_unix un, const char *path);
+static const char *unixstream_trybind(p_unix un, const char *path);
+
+/* unixstream object methods */
+static luaL_Reg unixstream_methods[] = {
+ {"__gc", meth_close},
+ {"__tostring", auxiliar_tostring},
+ {"accept", meth_accept},
+ {"bind", meth_bind},
+ {"close", meth_close},
+ {"connect", meth_connect},
+ {"dirty", meth_dirty},
+ {"getfd", meth_getfd},
+ {"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},
+ {"getsockname", meth_getsockname},
+ {"settimeout", meth_settimeout},
+ {"shutdown", meth_shutdown},
+ {NULL, NULL}
+};
+
+/* socket option handlers */
+static t_opt optset[] = {
+ {"keepalive", opt_set_keepalive},
+ {"reuseaddr", opt_set_reuseaddr},
+ {"linger", opt_set_linger},
+ {NULL, NULL}
+};
+
+/* functions in library namespace */
+static luaL_Reg func[] = {
+ {"stream", global_create},
+ {NULL, NULL}
+};
+
+/*-------------------------------------------------------------------------*\
+* Initializes module
+\*-------------------------------------------------------------------------*/
+int unixstream_open(lua_State *L)
+{
+ /* create classes */
+ auxiliar_newclass(L, "unixstream{master}", unixstream_methods);
+ auxiliar_newclass(L, "unixstream{client}", unixstream_methods);
+ auxiliar_newclass(L, "unixstream{server}", unixstream_methods);
+
+ /* create class groups */
+ auxiliar_add2group(L, "unixstream{master}", "unixstream{any}");
+ auxiliar_add2group(L, "unixstream{client}", "unixstream{any}");
+ auxiliar_add2group(L, "unixstream{server}", "unixstream{any}");
+
+ luaL_setfuncs(L, func, 0);
+ return 0;
+}
+
+/*=========================================================================*\
+* Lua methods
+\*=========================================================================*/
+/*-------------------------------------------------------------------------*\
+* Just call buffered IO methods
+\*-------------------------------------------------------------------------*/
+static int meth_send(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkclass(L, "unixstream{client}", 1);
+ return buffer_meth_send(L, &un->buf);
+}
+
+static int meth_receive(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkclass(L, "unixstream{client}", 1);
+ return buffer_meth_receive(L, &un->buf);
+}
+
+static int meth_getstats(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkclass(L, "unixstream{client}", 1);
+ return buffer_meth_getstats(L, &un->buf);
+}
+
+static int meth_setstats(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkclass(L, "unixstream{client}", 1);
+ return buffer_meth_setstats(L, &un->buf);
+}
+
+/*-------------------------------------------------------------------------*\
+* Just call option handler
+\*-------------------------------------------------------------------------*/
+static int meth_setoption(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkgroup(L, "unixstream{any}", 1);
+ return opt_meth_setoption(L, optset, &un->sock);
+}
+
+/*-------------------------------------------------------------------------*\
+* Select support methods
+\*-------------------------------------------------------------------------*/
+static int meth_getfd(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkgroup(L, "unixstream{any}", 1);
+ lua_pushnumber(L, (int) un->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_unix un = (p_unix) auxiliar_checkgroup(L, "unixstream{any}", 1);
+ un->sock = (t_socket) luaL_checknumber(L, 2);
+ return 0;
+}
+
+static int meth_dirty(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkgroup(L, "unixstream{any}", 1);
+ lua_pushboolean(L, !buffer_isempty(&un->buf));
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Waits for and returns a client object attempting connection to the
+* server object
+\*-------------------------------------------------------------------------*/
+static int meth_accept(lua_State *L) {
+ p_unix server = (p_unix) auxiliar_checkclass(L, "unixstream{server}", 1);
+ p_timeout tm = timeout_markstart(&server->tm);
+ t_socket sock;
+ int err = socket_accept(&server->sock, &sock, NULL, NULL, tm);
+ /* if successful, push client socket */
+ if (err == IO_DONE) {
+ p_unix clnt = (p_unix) lua_newuserdata(L, sizeof(t_unix));
+ auxiliar_setclass(L, "unixstream{client}", -1);
+ /* initialize structure fields */
+ 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);
+ return 1;
+ } else {
+ lua_pushnil(L);
+ lua_pushstring(L, socket_strerror(err));
+ return 2;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Binds an object to an address
+\*-------------------------------------------------------------------------*/
+static const char *unixstream_trybind(p_unix un, const char *path) {
+ struct sockaddr_un local;
+ size_t len = strlen(path);
+ int err;
+ if (len >= sizeof(local.sun_path)) return "path too long";
+ memset(&local, 0, sizeof(local));
+ strcpy(local.sun_path, path);
+ local.sun_family = AF_UNIX;
+#ifdef UNIX_HAS_SUN_LEN
+ local.sun_len = sizeof(local.sun_family) + sizeof(local.sun_len)
+ + len + 1;
+ err = socket_bind(&un->sock, (SA *) &local, local.sun_len);
+
+#else
+ err = socket_bind(&un->sock, (SA *) &local,
+ sizeof(local.sun_family) + len);
+#endif
+ if (err != IO_DONE) socket_destroy(&un->sock);
+ return socket_strerror(err);
+}
+
+static int meth_bind(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkclass(L, "unixstream{master}", 1);
+ const char *path = luaL_checkstring(L, 2);
+ const char *err = unixstream_trybind(un, path);
+ if (err) {
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+static int meth_getsockname(lua_State *L)
+{
+ p_unix un = (p_unix) auxiliar_checkgroup(L, "unixstream{any}", 1);
+ struct sockaddr_un peer = {0};
+ socklen_t peer_len = sizeof(peer);
+
+ if (getsockname(un->sock, (SA *) &peer, &peer_len) < 0) {
+ lua_pushnil(L);
+ lua_pushstring(L, socket_strerror(errno));
+ return 2;
+ }
+
+ lua_pushstring(L, peer.sun_path);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Turns a master unixstream object into a client object.
+\*-------------------------------------------------------------------------*/
+static const char *unixstream_tryconnect(p_unix un, const char *path)
+{
+ struct sockaddr_un remote;
+ int err;
+ size_t len = strlen(path);
+ if (len >= sizeof(remote.sun_path)) return "path too long";
+ memset(&remote, 0, sizeof(remote));
+ strcpy(remote.sun_path, path);
+ remote.sun_family = AF_UNIX;
+ timeout_markstart(&un->tm);
+#ifdef UNIX_HAS_SUN_LEN
+ remote.sun_len = sizeof(remote.sun_family) + sizeof(remote.sun_len)
+ + len + 1;
+ err = socket_connect(&un->sock, (SA *) &remote, remote.sun_len, &un->tm);
+#else
+ err = socket_connect(&un->sock, (SA *) &remote,
+ sizeof(remote.sun_family) + len, &un->tm);
+#endif
+ if (err != IO_DONE) socket_destroy(&un->sock);
+ return socket_strerror(err);
+}
+
+static int meth_connect(lua_State *L)
+{
+ p_unix un = (p_unix) auxiliar_checkclass(L, "unixstream{master}", 1);
+ const char *path = luaL_checkstring(L, 2);
+ const char *err = unixstream_tryconnect(un, path);
+ if (err) {
+ lua_pushnil(L);
+ lua_pushstring(L, err);
+ return 2;
+ }
+ /* turn master object into a client object */
+ auxiliar_setclass(L, "unixstream{client}", 1);
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Closes socket used by object
+\*-------------------------------------------------------------------------*/
+static int meth_close(lua_State *L)
+{
+ p_unix un = (p_unix) auxiliar_checkgroup(L, "unixstream{any}", 1);
+ socket_destroy(&un->sock);
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Puts the sockt in listen mode
+\*-------------------------------------------------------------------------*/
+static int meth_listen(lua_State *L)
+{
+ p_unix un = (p_unix) auxiliar_checkclass(L, "unixstream{master}", 1);
+ int backlog = (int) luaL_optnumber(L, 2, 32);
+ int err = socket_listen(&un->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, "unixstream{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_unix stream = (p_unix) auxiliar_checkclass(L, "unixstream{client}", 1);
+ int how = luaL_checkoption(L, 2, "both", methods);
+ socket_shutdown(&stream->sock, how);
+ lua_pushnumber(L, 1);
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Just call tm methods
+\*-------------------------------------------------------------------------*/
+static int meth_settimeout(lua_State *L) {
+ p_unix un = (p_unix) auxiliar_checkgroup(L, "unixstream{any}", 1);
+ return timeout_meth_settimeout(L, &un->tm);
+}
+
+/*=========================================================================*\
+* Library functions
+\*=========================================================================*/
+/*-------------------------------------------------------------------------*\
+* Creates a master unixstream object
+\*-------------------------------------------------------------------------*/
+static int global_create(lua_State *L) {
+ t_socket sock;
+ int err = socket_create(&sock, AF_UNIX, SOCK_STREAM, 0);
+ /* try to allocate a system socket */
+ if (err == IO_DONE) {
+ /* allocate unixstream object */
+ p_unix un = (p_unix) lua_newuserdata(L, sizeof(t_unix));
+ /* set its type as master object */
+ auxiliar_setclass(L, "unixstream{master}", -1);
+ /* initialize remaining structure fields */
+ socket_setnonblocking(&sock);
+ un->sock = sock;
+ io_init(&un->io, (p_send) socket_send, (p_recv) socket_recv,
+ (p_error) socket_ioerror, &un->sock);
+ timeout_init(&un->tm, -1, -1);
+ buffer_init(&un->buf, &un->io, &un->tm);
+ return 1;
+ } else {
+ lua_pushnil(L);
+ lua_pushstring(L, socket_strerror(err));
+ return 2;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-15 13:31:40 +0000