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Diffstat (limited to 'source/luametatex/source/luacore/luasocket/src/wsocket.c')
-rw-r--r--source/luametatex/source/luacore/luasocket/src/wsocket.c434
1 files changed, 434 insertions, 0 deletions
diff --git a/source/luametatex/source/luacore/luasocket/src/wsocket.c b/source/luametatex/source/luacore/luasocket/src/wsocket.c
new file mode 100644
index 000000000..7cd41159d
--- /dev/null
+++ b/source/luametatex/source/luacore/luasocket/src/wsocket.c
@@ -0,0 +1,434 @@
+/*=========================================================================*\
+* Socket compatibilization module for Win32
+* LuaSocket toolkit
+*
+* The penalty of calling select to avoid busy-wait is only paid when
+* the I/O call fail in the first place.
+\*=========================================================================*/
+#include "luasocket.h"
+
+#include <string.h>
+
+#include "socket.h"
+#include "pierror.h"
+
+/* WinSock doesn't have a strerror... */
+static const char *wstrerror(int err);
+
+/*-------------------------------------------------------------------------*\
+* Initializes module
+\*-------------------------------------------------------------------------*/
+int socket_open(void) {
+ WSADATA wsaData;
+ WORD wVersionRequested = MAKEWORD(2, 0);
+ int err = WSAStartup(wVersionRequested, &wsaData );
+ if (err != 0) return 0;
+ if ((LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 0) &&
+ (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1)) {
+ WSACleanup();
+ return 0;
+ }
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Close module
+\*-------------------------------------------------------------------------*/
+int socket_close(void) {
+ WSACleanup();
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Wait for readable/writable/connected socket with timeout
+\*-------------------------------------------------------------------------*/
+#define WAITFD_R 1
+#define WAITFD_W 2
+#define WAITFD_E 4
+#define WAITFD_C (WAITFD_E|WAITFD_W)
+
+int socket_waitfd(p_socket ps, int sw, p_timeout tm) {
+ int ret;
+ fd_set rfds, wfds, efds, *rp = NULL, *wp = NULL, *ep = NULL;
+ struct timeval tv, *tp = NULL;
+ double t;
+ if (timeout_iszero(tm)) return IO_TIMEOUT; /* optimize timeout == 0 case */
+ if (sw & WAITFD_R) {
+ FD_ZERO(&rfds);
+ FD_SET(*ps, &rfds);
+ rp = &rfds;
+ }
+ if (sw & WAITFD_W) { FD_ZERO(&wfds); FD_SET(*ps, &wfds); wp = &wfds; }
+ if (sw & WAITFD_C) { FD_ZERO(&efds); FD_SET(*ps, &efds); ep = &efds; }
+ if ((t = timeout_get(tm)) >= 0.0) {
+ tv.tv_sec = (int) t;
+ tv.tv_usec = (int) ((t-tv.tv_sec)*1.0e6);
+ tp = &tv;
+ }
+ ret = select(0, rp, wp, ep, tp);
+ if (ret == -1) return WSAGetLastError();
+ if (ret == 0) return IO_TIMEOUT;
+ if (sw == WAITFD_C && FD_ISSET(*ps, &efds)) return IO_CLOSED;
+ return IO_DONE;
+}
+
+/*-------------------------------------------------------------------------*\
+* Select with int timeout in ms
+\*-------------------------------------------------------------------------*/
+int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds,
+ p_timeout tm) {
+ struct timeval tv;
+ double t = timeout_get(tm);
+ tv.tv_sec = (int) t;
+ tv.tv_usec = (int) ((t - tv.tv_sec) * 1.0e6);
+ if (n <= 0) {
+ Sleep((DWORD) (1000*t));
+ return 0;
+ } else return select(0, rfds, wfds, efds, t >= 0.0? &tv: NULL);
+}
+
+/*-------------------------------------------------------------------------*\
+* Close and inutilize socket
+\*-------------------------------------------------------------------------*/
+void socket_destroy(p_socket ps) {
+ if (*ps != SOCKET_INVALID) {
+ socket_setblocking(ps); /* close can take a long time on WIN32 */
+ closesocket(*ps);
+ *ps = SOCKET_INVALID;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+*
+\*-------------------------------------------------------------------------*/
+void socket_shutdown(p_socket ps, int how) {
+ socket_setblocking(ps);
+ shutdown(*ps, how);
+ socket_setnonblocking(ps);
+}
+
+/*-------------------------------------------------------------------------*\
+* Creates and sets up a socket
+\*-------------------------------------------------------------------------*/
+int socket_create(p_socket ps, int domain, int type, int protocol) {
+ *ps = socket(domain, type, protocol);
+ if (*ps != SOCKET_INVALID) return IO_DONE;
+ else return WSAGetLastError();
+}
+
+/*-------------------------------------------------------------------------*\
+* Connects or returns error message
+\*-------------------------------------------------------------------------*/
+int socket_connect(p_socket ps, SA *addr, socklen_t len, p_timeout tm) {
+ int err;
+ /* don't call on closed socket */
+ if (*ps == SOCKET_INVALID) return IO_CLOSED;
+ /* ask system to connect */
+ if (connect(*ps, addr, len) == 0) return IO_DONE;
+ /* make sure the system is trying to connect */
+ err = WSAGetLastError();
+ if (err != WSAEWOULDBLOCK && err != WSAEINPROGRESS) return err;
+ /* zero timeout case optimization */
+ if (timeout_iszero(tm)) return IO_TIMEOUT;
+ /* we wait until something happens */
+ err = socket_waitfd(ps, WAITFD_C, tm);
+ if (err == IO_CLOSED) {
+ int elen = sizeof(err);
+ /* give windows time to set the error (yes, disgusting) */
+ Sleep(10);
+ /* find out why we failed */
+ getsockopt(*ps, SOL_SOCKET, SO_ERROR, (char *)&err, &elen);
+ /* we KNOW there was an error. if 'why' is 0, we will return
+ * "unknown error", but it's not really our fault */
+ return err > 0? err: IO_UNKNOWN;
+ } else return err;
+
+}
+
+/*-------------------------------------------------------------------------*\
+* Binds or returns error message
+\*-------------------------------------------------------------------------*/
+int socket_bind(p_socket ps, SA *addr, socklen_t len) {
+ int err = IO_DONE;
+ socket_setblocking(ps);
+ if (bind(*ps, addr, len) < 0) err = WSAGetLastError();
+ socket_setnonblocking(ps);
+ return err;
+}
+
+/*-------------------------------------------------------------------------*\
+*
+\*-------------------------------------------------------------------------*/
+int socket_listen(p_socket ps, int backlog) {
+ int err = IO_DONE;
+ socket_setblocking(ps);
+ if (listen(*ps, backlog) < 0) err = WSAGetLastError();
+ socket_setnonblocking(ps);
+ return err;
+}
+
+/*-------------------------------------------------------------------------*\
+* Accept with timeout
+\*-------------------------------------------------------------------------*/
+int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len,
+ p_timeout tm) {
+ if (*ps == SOCKET_INVALID) return IO_CLOSED;
+ for ( ;; ) {
+ int err;
+ /* try to get client socket */
+ if ((*pa = accept(*ps, addr, len)) != SOCKET_INVALID) return IO_DONE;
+ /* find out why we failed */
+ err = WSAGetLastError();
+ /* if we failed because there was no connectoin, keep trying */
+ if (err != WSAEWOULDBLOCK && err != WSAECONNABORTED) return err;
+ /* call select to avoid busy wait */
+ if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Send with timeout
+* On windows, if you try to send 10MB, the OS will buffer EVERYTHING
+* this can take an awful lot of time and we will end up blocked.
+* Therefore, whoever calls this function should not pass a huge buffer.
+\*-------------------------------------------------------------------------*/
+int socket_send(p_socket ps, const char *data, size_t count,
+ size_t *sent, p_timeout tm)
+{
+ int err;
+ *sent = 0;
+ /* avoid making system calls on closed sockets */
+ if (*ps == SOCKET_INVALID) return IO_CLOSED;
+ /* loop until we send something or we give up on error */
+ for ( ;; ) {
+ /* try to send something */
+ int put = send(*ps, data, (int) count, 0);
+ /* if we sent something, we are done */
+ if (put > 0) {
+ *sent = put;
+ return IO_DONE;
+ }
+ /* deal with failure */
+ err = WSAGetLastError();
+ /* we can only proceed if there was no serious error */
+ if (err != WSAEWOULDBLOCK) return err;
+ /* avoid busy wait */
+ if ((err = socket_waitfd(ps, WAITFD_W, tm)) != IO_DONE) return err;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Sendto with timeout
+\*-------------------------------------------------------------------------*/
+int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent,
+ SA *addr, socklen_t len, p_timeout tm)
+{
+ int err;
+ *sent = 0;
+ if (*ps == SOCKET_INVALID) return IO_CLOSED;
+ for ( ;; ) {
+ int put = sendto(*ps, data, (int) count, 0, addr, len);
+ if (put > 0) {
+ *sent = put;
+ return IO_DONE;
+ }
+ err = WSAGetLastError();
+ if (err != WSAEWOULDBLOCK) return err;
+ if ((err = socket_waitfd(ps, WAITFD_W, tm)) != IO_DONE) return err;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Receive with timeout
+\*-------------------------------------------------------------------------*/
+int socket_recv(p_socket ps, char *data, size_t count, size_t *got,
+ p_timeout tm)
+{
+ int err, prev = IO_DONE;
+ *got = 0;
+ if (*ps == SOCKET_INVALID) return IO_CLOSED;
+ for ( ;; ) {
+ int taken = recv(*ps, data, (int) count, 0);
+ if (taken > 0) {
+ *got = taken;
+ return IO_DONE;
+ }
+ if (taken == 0) return IO_CLOSED;
+ err = WSAGetLastError();
+ /* On UDP, a connreset simply means the previous send failed.
+ * So we try again.
+ * On TCP, it means our socket is now useless, so the error passes.
+ * (We will loop again, exiting because the same error will happen) */
+ if (err != WSAEWOULDBLOCK) {
+ if (err != WSAECONNRESET || prev == WSAECONNRESET) return err;
+ prev = err;
+ }
+ if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Recvfrom with timeout
+\*-------------------------------------------------------------------------*/
+int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
+ SA *addr, socklen_t *len, p_timeout tm)
+{
+ int err, prev = IO_DONE;
+ *got = 0;
+ if (*ps == SOCKET_INVALID) return IO_CLOSED;
+ for ( ;; ) {
+ int taken = recvfrom(*ps, data, (int) count, 0, addr, len);
+ if (taken > 0) {
+ *got = taken;
+ return IO_DONE;
+ }
+ if (taken == 0) return IO_CLOSED;
+ err = WSAGetLastError();
+ /* On UDP, a connreset simply means the previous send failed.
+ * So we try again.
+ * On TCP, it means our socket is now useless, so the error passes.
+ * (We will loop again, exiting because the same error will happen) */
+ if (err != WSAEWOULDBLOCK) {
+ if (err != WSAECONNRESET || prev == WSAECONNRESET) return err;
+ prev = err;
+ }
+ if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Put socket into blocking mode
+\*-------------------------------------------------------------------------*/
+void socket_setblocking(p_socket ps) {
+ u_long argp = 0;
+ ioctlsocket(*ps, FIONBIO, &argp);
+}
+
+/*-------------------------------------------------------------------------*\
+* Put socket into non-blocking mode
+\*-------------------------------------------------------------------------*/
+void socket_setnonblocking(p_socket ps) {
+ u_long argp = 1;
+ ioctlsocket(*ps, FIONBIO, &argp);
+}
+
+/*-------------------------------------------------------------------------*\
+* DNS helpers
+\*-------------------------------------------------------------------------*/
+int socket_gethostbyaddr(const char *addr, socklen_t len, struct hostent **hp) {
+ *hp = gethostbyaddr(addr, len, AF_INET);
+ if (*hp) return IO_DONE;
+ else return WSAGetLastError();
+}
+
+int socket_gethostbyname(const char *addr, struct hostent **hp) {
+ *hp = gethostbyname(addr);
+ if (*hp) return IO_DONE;
+ else return WSAGetLastError();
+}
+
+/*-------------------------------------------------------------------------*\
+* Error translation functions
+\*-------------------------------------------------------------------------*/
+const char *socket_hoststrerror(int err) {
+ if (err <= 0) return io_strerror(err);
+ switch (err) {
+ case WSAHOST_NOT_FOUND: return PIE_HOST_NOT_FOUND;
+ default: return wstrerror(err);
+ }
+}
+
+const char *socket_strerror(int err) {
+ if (err <= 0) return io_strerror(err);
+ switch (err) {
+ case WSAEADDRINUSE: return PIE_ADDRINUSE;
+ case WSAECONNREFUSED : return PIE_CONNREFUSED;
+ case WSAEISCONN: return PIE_ISCONN;
+ case WSAEACCES: return PIE_ACCESS;
+ case WSAECONNABORTED: return PIE_CONNABORTED;
+ case WSAECONNRESET: return PIE_CONNRESET;
+ case WSAETIMEDOUT: return PIE_TIMEDOUT;
+ default: return wstrerror(err);
+ }
+}
+
+const char *socket_ioerror(p_socket ps, int err) {
+ (void) ps;
+ return socket_strerror(err);
+}
+
+static const char *wstrerror(int err) {
+ switch (err) {
+ case WSAEINTR: return "Interrupted function call";
+ case WSAEACCES: return PIE_ACCESS; /* "Permission denied"; */
+ case WSAEFAULT: return "Bad address";
+ case WSAEINVAL: return "Invalid argument";
+ case WSAEMFILE: return "Too many open files";
+ case WSAEWOULDBLOCK: return "Resource temporarily unavailable";
+ case WSAEINPROGRESS: return "Operation now in progress";
+ case WSAEALREADY: return "Operation already in progress";
+ case WSAENOTSOCK: return "Socket operation on nonsocket";
+ case WSAEDESTADDRREQ: return "Destination address required";
+ case WSAEMSGSIZE: return "Message too long";
+ case WSAEPROTOTYPE: return "Protocol wrong type for socket";
+ case WSAENOPROTOOPT: return "Bad protocol option";
+ case WSAEPROTONOSUPPORT: return "Protocol not supported";
+ case WSAESOCKTNOSUPPORT: return PIE_SOCKTYPE; /* "Socket type not supported"; */
+ case WSAEOPNOTSUPP: return "Operation not supported";
+ case WSAEPFNOSUPPORT: return "Protocol family not supported";
+ case WSAEAFNOSUPPORT: return PIE_FAMILY; /* "Address family not supported by protocol family"; */
+ case WSAEADDRINUSE: return PIE_ADDRINUSE; /* "Address already in use"; */
+ case WSAEADDRNOTAVAIL: return "Cannot assign requested address";
+ case WSAENETDOWN: return "Network is down";
+ case WSAENETUNREACH: return "Network is unreachable";
+ case WSAENETRESET: return "Network dropped connection on reset";
+ case WSAECONNABORTED: return "Software caused connection abort";
+ case WSAECONNRESET: return PIE_CONNRESET; /* "Connection reset by peer"; */
+ case WSAENOBUFS: return "No buffer space available";
+ case WSAEISCONN: return PIE_ISCONN; /* "Socket is already connected"; */
+ case WSAENOTCONN: return "Socket is not connected";
+ case WSAESHUTDOWN: return "Cannot send after socket shutdown";
+ case WSAETIMEDOUT: return PIE_TIMEDOUT; /* "Connection timed out"; */
+ case WSAECONNREFUSED: return PIE_CONNREFUSED; /* "Connection refused"; */
+ case WSAEHOSTDOWN: return "Host is down";
+ case WSAEHOSTUNREACH: return "No route to host";
+ case WSAEPROCLIM: return "Too many processes";
+ case WSASYSNOTREADY: return "Network subsystem is unavailable";
+ case WSAVERNOTSUPPORTED: return "Winsock.dll version out of range";
+ case WSANOTINITIALISED:
+ return "Successful WSAStartup not yet performed";
+ case WSAEDISCON: return "Graceful shutdown in progress";
+ case WSAHOST_NOT_FOUND: return PIE_HOST_NOT_FOUND; /* "Host not found"; */
+ case WSATRY_AGAIN: return "Nonauthoritative host not found";
+ case WSANO_RECOVERY: return PIE_FAIL; /* "Nonrecoverable name lookup error"; */
+ case WSANO_DATA: return "Valid name, no data record of requested type";
+ default: return "Unknown error";
+ }
+}
+
+const char *socket_gaistrerror(int err) {
+ if (err == 0) return NULL;
+ switch (err) {
+ case EAI_AGAIN: return PIE_AGAIN;
+ case EAI_BADFLAGS: return PIE_BADFLAGS;
+#ifdef EAI_BADHINTS
+ case EAI_BADHINTS: return PIE_BADHINTS;
+#endif
+ case EAI_FAIL: return PIE_FAIL;
+ case EAI_FAMILY: return PIE_FAMILY;
+ case EAI_MEMORY: return PIE_MEMORY;
+ case EAI_NONAME: return PIE_NONAME;
+#ifdef EAI_OVERFLOW
+ case EAI_OVERFLOW: return PIE_OVERFLOW;
+#endif
+#ifdef EAI_PROTOCOL
+ case EAI_PROTOCOL: return PIE_PROTOCOL;
+#endif
+ case EAI_SERVICE: return PIE_SERVICE;
+ case EAI_SOCKTYPE: return PIE_SOCKTYPE;
+#ifdef EAI_SYSTEM
+ case EAI_SYSTEM: return strerror(errno);
+#endif
+ default: return gai_strerror(err);
+ }
+}
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