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// socket.c |
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// |
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/**************************************************************************** |
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liblscp - LinuxSampler Control Protocol API |
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Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved. |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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|
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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|
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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*****************************************************************************/ |
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|
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#include "lscp/socket.h" |
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|
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|
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//------------------------------------------------------------------------- |
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// Socket info debugging. |
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|
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#if defined(WIN32) |
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|
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static struct { |
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|
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int iError; |
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const char *pszError; |
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|
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} _wsaErrorCodes[] = { |
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|
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{ 0, "No error" }, |
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{ WSAEINTR, "Interrupted system call" }, |
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{ WSAEBADF, "Bad file number" }, |
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{ WSAEACCES, "Permission denied" }, |
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{ WSAEFAULT, "Bad address" }, |
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{ WSAEINVAL, "Invalid argument" }, |
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{ WSAEMFILE, "Too many open sockets" }, |
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{ WSAEWOULDBLOCK, "Operation would block" }, |
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{ WSAEINPROGRESS, "Operation now in progress" }, |
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{ WSAEALREADY, "Operation already in progress" }, |
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{ WSAENOTSOCK, "Socket operation on non-socket" }, |
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{ WSAEDESTADDRREQ, "Destination address required" }, |
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{ WSAEMSGSIZE, "Message too long" }, |
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{ WSAEPROTOTYPE, "Protocol wrong type for socket" }, |
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{ WSAENOPROTOOPT, "Bad protocol option" }, |
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{ WSAEPROTONOSUPPORT, "Protocol not supported" }, |
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{ WSAESOCKTNOSUPPORT, "Socket type not supported" }, |
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{ WSAEOPNOTSUPP, "Operation not supported on socket" }, |
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{ WSAEPFNOSUPPORT, "Protocol family not supported" }, |
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{ WSAEAFNOSUPPORT, "Address family not supported" }, |
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{ WSAEADDRINUSE, "Address already in use" }, |
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{ WSAEADDRNOTAVAIL, "Can't assign requested address" }, |
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{ WSAENETDOWN, "Network is down" }, |
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{ WSAENETUNREACH, "Network is unreachable" }, |
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{ WSAENETRESET, "Net connection reset" }, |
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{ WSAECONNABORTED, "Software caused connection abort" }, |
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{ WSAECONNRESET, "Connection reset by peer" }, |
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{ WSAENOBUFS, "No buffer space available" }, |
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{ WSAEISCONN, "Socket is already connected" }, |
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{ WSAENOTCONN, "Socket is not connected" }, |
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{ WSAESHUTDOWN, "Can't send after socket shutdown" }, |
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{ WSAETOOMANYREFS, "Too many references, can't splice" }, |
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{ WSAETIMEDOUT, "Connection timed out" }, |
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{ WSAECONNREFUSED, "Connection refused" }, |
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{ WSAELOOP, "Too many levels of symbolic links" }, |
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{ WSAENAMETOOLONG, "File name too long" }, |
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{ WSAEHOSTDOWN, "Host is down" }, |
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{ WSAEHOSTUNREACH, "No route to host" }, |
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{ WSAENOTEMPTY, "Directory not empty" }, |
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{ WSAEPROCLIM, "Too many processes" }, |
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{ WSAEUSERS, "Too many users" }, |
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{ WSAEDQUOT, "Disc quota exceeded" }, |
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{ WSAESTALE, "Stale NFS file handle" }, |
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{ WSAEREMOTE, "Too many levels of remote in path" }, |
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{ WSASYSNOTREADY, "Network system is unavailable" }, |
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{ WSAVERNOTSUPPORTED, "Winsock version out of range" }, |
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{ WSANOTINITIALISED, "WSAStartup not yet called" }, |
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{ WSAEDISCON, "Graceful shutdown in progress" }, |
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{ WSAHOST_NOT_FOUND, "Host not found" }, |
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{ WSANO_DATA, "No host data of that type was found" }, |
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{ 0, NULL } |
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}; |
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|
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void lscp_socket_perror ( const char *pszPrefix ) |
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{ |
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int iError = WSAGetLastError(); |
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const char *pszError = "Unknown error code"; |
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int i; |
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|
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for (i = 0; _wsaErrorCodes[i].pszError; i++) { |
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if (_wsaErrorCodes[i].iError == iError) { |
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pszError = _wsaErrorCodes[i].pszError; |
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break; |
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} |
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} |
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|
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fprintf(stderr, "%s: %s (%d)\n", pszPrefix, pszError, iError); |
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} |
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|
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#else |
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|
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void lscp_socket_perror ( const char *pszPrefix ) |
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{ |
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perror(pszPrefix); |
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} |
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|
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#endif |
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|
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|
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static void _lscp_socket_getopt_bool ( lscp_socket_t sock, const char *pszOptName, int iOptName ) |
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{ |
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int iSockOpt; |
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int iSockLen = sizeof(int); |
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char szPrefix[33]; |
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|
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sprintf(szPrefix, " %s\t", pszOptName); |
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if (getsockopt(sock, SOL_SOCKET, iOptName, (char *) &iSockOpt, &iSockLen) == SOCKET_ERROR) |
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lscp_socket_perror(szPrefix); |
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else |
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fprintf(stderr, "%s: %s\n", szPrefix, (iSockOpt ? "ON" : "OFF")); |
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} |
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|
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static void _lscp_socket_getopt_int ( lscp_socket_t sock, const char *pszOptName, int iOptName ) |
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{ |
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int iSockOpt; |
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int iSockLen = sizeof(int); |
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char szPrefix[33]; |
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|
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sprintf(szPrefix, " %s\t", pszOptName); |
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if (getsockopt(sock, SOL_SOCKET, iOptName, (char *) &iSockOpt, &iSockLen) == SOCKET_ERROR) |
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lscp_socket_perror(szPrefix); |
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else |
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fprintf(stderr, "%s: %d\n", szPrefix, iSockOpt); |
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} |
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|
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void lscp_socket_getopts ( const char *pszPrefix, lscp_socket_t sock ) |
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{ |
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fprintf(stderr, "%s: sock=%d:\n", pszPrefix, sock); |
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|
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_lscp_socket_getopt_bool(sock, "SO_BROADCAST", SO_BROADCAST); |
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_lscp_socket_getopt_bool(sock, "SO_DEBUG", SO_DEBUG); |
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#if defined(WIN32) |
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_lscp_socket_getopt_bool(sock, "SO_DONTLINGER", SO_DONTLINGER); |
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#endif |
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_lscp_socket_getopt_bool(sock, "SO_DONTROUTE", SO_DONTROUTE); |
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_lscp_socket_getopt_bool(sock, "SO_KEEPALIVE", SO_KEEPALIVE); |
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_lscp_socket_getopt_bool(sock, "SO_OOBINLINE", SO_OOBINLINE); |
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_lscp_socket_getopt_int (sock, "SO_RCVBUF", SO_RCVBUF); |
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_lscp_socket_getopt_bool(sock, "SO_REUSEADDR", SO_REUSEADDR); |
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_lscp_socket_getopt_int (sock, "SO_SNDBUF", SO_SNDBUF); |
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} |
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|
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void lscp_socket_trace ( const char *pszPrefix, struct sockaddr_in *pAddr, const char *pchBuffer, int cchBuffer ) |
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{ |
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char *pszBuffer; |
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|
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fprintf(stderr, "%s: addr=%s port=%d:\n", |
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pszPrefix, |
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inet_ntoa(pAddr->sin_addr), |
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htons(pAddr->sin_port) |
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); |
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|
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if (pchBuffer && cchBuffer > 0) { |
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pszBuffer = (char *) malloc(cchBuffer + 1); |
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if (pszBuffer) { |
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memcpy(pszBuffer, pchBuffer, cchBuffer); |
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while (cchBuffer > 0 && (pszBuffer[cchBuffer - 1] == '\n' || pszBuffer[cchBuffer- 1] == '\r')) |
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cchBuffer--; |
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pszBuffer[cchBuffer] = (char) 0; |
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fprintf(stderr, "< %s\n", pszBuffer); |
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free(pszBuffer); |
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} |
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} |
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else fprintf(stderr, "< (null)\n"); |
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} |
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|
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|
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//------------------------------------------------------------------------- |
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// Threaded socket agent struct helpers. |
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|
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void lscp_socket_agent_init ( lscp_socket_agent_t *pAgent, lscp_socket_t sock, struct sockaddr_in *pAddr, int cAddr ) |
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{ |
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memset(pAgent, 0, sizeof(lscp_socket_agent_t)); |
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|
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pAgent->sock = sock; |
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memmove((char *) &(pAgent->addr), pAddr, cAddr); |
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pAgent->pThread = NULL; |
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pAgent->iState = 0; |
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} |
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|
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|
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lscp_status_t lscp_socket_agent_start ( lscp_socket_agent_t *pAgent, lscp_thread_proc_t pfnProc, void *pvData, int iDetach ) |
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{ |
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if (pAgent->iState) |
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pAgent->iState = 0; |
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if (pAgent->pThread) |
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lscp_thread_destroy(pAgent->pThread); |
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|
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pAgent->iState = 1; |
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pAgent->pThread = lscp_thread_create(pfnProc, pvData, iDetach); |
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|
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return (pAgent->pThread == NULL ? LSCP_FAILED : LSCP_OK); |
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} |
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|
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|
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lscp_status_t lscp_socket_agent_join ( lscp_socket_agent_t *pAgent ) |
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{ |
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lscp_status_t ret = LSCP_FAILED; |
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|
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if (pAgent->pThread) |
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ret = lscp_thread_join(pAgent->pThread); |
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|
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return ret; |
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} |
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|
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|
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lscp_status_t lscp_socket_agent_free ( lscp_socket_agent_t *pAgent ) |
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{ |
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lscp_status_t ret = LSCP_FAILED; |
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|
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if (pAgent->sock != INVALID_SOCKET) |
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closesocket(pAgent->sock); |
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pAgent->sock = INVALID_SOCKET; |
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|
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if (pAgent->iState) |
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pAgent->iState = 0; |
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|
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if (pAgent->pThread) |
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ret = lscp_thread_destroy(pAgent->pThread); |
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pAgent->pThread = NULL; |
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|
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return ret; |
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} |
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|
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|
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// end of socket.c |
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