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1026 |
ivang |
/*
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* sock.c -- Posix Socket upper layer support module for general posix use
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*
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* Copyright (c) GoAhead Software Inc., 1995-2000. All Rights Reserved.
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*/
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/******************************** Description *********************************/
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/*
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* Posix Socket Module. This supports blocking and non-blocking buffered
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* socket I/O.
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*/
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/********************************** Includes **********************************/
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#include <string.h>
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#include <stdlib.h>
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#if UEMF
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#include "uemf.h"
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#else
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#include <socket.h>
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#include <types.h>
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#include <unistd.h>
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#include "emfInternal.h"
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#endif
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/************************************ Locals **********************************/
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socket_t **socketList; /* List of open sockets */
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int socketMax; /* Maximum size of socket */
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int socketHighestFd = -1; /* Highest socket fd opened */
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/***************************** Forward Declarations ***************************/
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static int socketDoOutput(socket_t *sp, char *buf, int toWrite, int *errCode);
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static int tryAlternateSendTo(int sock, char *buf, int toWrite, int i,
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struct sockaddr *server);
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/*********************************** Code *************************************/
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/*
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* Write to a socket. Absorb as much data as the socket can buffer. Block if
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* the socket is in blocking mode. Returns -1 on error, otherwise the number
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* of bytes written.
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*/
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int socketWrite(int sid, char *buf, int bufsize)
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{
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socket_t *sp;
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ringq_t *rq;
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int len, bytesWritten, room;
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a_assert(buf);
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a_assert(bufsize >= 0);
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if ((sp = socketPtr(sid)) == NULL) {
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return -1;
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}
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/*
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* Loop adding as much data to the output ringq as we can absorb. Initiate a
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* flush when the ringq is too full and continue. Block in socketFlush if the
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* socket is in blocking mode.
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*/
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rq = &sp->outBuf;
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for (bytesWritten = 0; bufsize > 0; ) {
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if ((room = ringqPutBlkMax(rq)) == 0) {
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| 68 |
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if (socketFlush(sid) < 0) {
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return -1;
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}
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if ((room = ringqPutBlkMax(rq)) == 0) {
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if (sp->flags & SOCKET_BLOCK) {
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#if WIN || CE
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int errCode;
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if (! socketWaitForEvent(sp, FD_WRITE | SOCKET_WRITABLE,
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&errCode)) {
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return -1;
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}
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#endif
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continue;
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}
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break;
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}
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continue;
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}
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len = min(room, bufsize);
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ringqPutBlk(rq, (unsigned char *) buf, len);
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bytesWritten += len;
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bufsize -= len;
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buf += len;
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}
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| 92 |
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return bytesWritten;
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}
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/******************************************************************************/
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/*
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* Write a string to a socket
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*/
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int socketWriteString(int sid, char_t *buf)
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{
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#if UNICODE
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char *byteBuf;
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int r, len;
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| 106 |
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len = gstrlen(buf);
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| 107 |
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byteBuf = ballocUniToAsc(buf, len);
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r = socketWrite(sid, byteBuf, len);
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bfreeSafe(B_L, byteBuf);
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return r;
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#else
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return socketWrite(sid, buf, strlen(buf));
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#endif /* UNICODE */
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| 114 |
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}
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/******************************************************************************/
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/*
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* Read from a socket. Return the number of bytes read if successful. This
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* may be less than the requested "bufsize" and may be zero. Return -1 for
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* errors. Return 0 for EOF. Otherwise return the number of bytes read.
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* If this routine returns zero it indicates an EOF condition.
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* which can be verified with socketEof()
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| 124 |
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* Note: this ignores the line buffer, so a previous socketGets
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* which read a partial line may cause a subsequent socketRead to miss some
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* data. This routine may block if the socket is in blocking mode.
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*
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*/
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int socketRead(int sid, char *buf, int bufsize)
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{
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socket_t *sp;
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ringq_t *rq;
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int len, room, errCode, bytesRead;
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a_assert(buf);
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a_assert(bufsize > 0);
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| 139 |
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if ((sp = socketPtr(sid)) == NULL) {
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return -1;
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}
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if (sp->flags & SOCKET_EOF) {
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return 0;
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}
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rq = &sp->inBuf;
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for (bytesRead = 0; bufsize > 0; ) {
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len = min(ringqLen(rq), bufsize);
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| 150 |
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if (len <= 0) {
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/*
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* if blocking mode and already have data, exit now or it may block
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* forever.
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*/
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if ((sp->flags & SOCKET_BLOCK) &&
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(bytesRead > 0)) {
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break;
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}
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/*
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* This flush is critical for readers of datagram packets. If the
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* buffer is not big enough to read the whole datagram in one hit,
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* the recvfrom call will fail.
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*/
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ringqFlush(rq);
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room = ringqPutBlkMax(rq);
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len = socketGetInput(sid, (char *) rq->endp, room, &errCode);
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if (len < 0) {
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if (errCode == EWOULDBLOCK) {
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if ((sp->flags & SOCKET_BLOCK) &&
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| 170 |
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(bytesRead == 0)) {
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continue;
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}
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| 173 |
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if (bytesRead >= 0) {
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| 174 |
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return bytesRead;
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}
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}
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| 177 |
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return -1;
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| 178 |
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| 179 |
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} else if (len == 0) {
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/*
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| 181 |
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* If bytesRead is 0, this is EOF since socketRead should never
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| 182 |
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* be called unless there is data yet to be read. Set the flag.
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* Then pass back the number of bytes read.
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*/
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| 185 |
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if (bytesRead == 0) {
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| 186 |
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sp->flags |= SOCKET_EOF;
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}
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| 188 |
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return bytesRead;
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| 189 |
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}
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| 190 |
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ringqPutBlkAdj(rq, len);
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| 191 |
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len = min(len, bufsize);
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| 192 |
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}
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| 193 |
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memcpy(&buf[bytesRead], rq->servp, len);
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| 194 |
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ringqGetBlkAdj(rq, len);
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| 195 |
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bufsize -= len;
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| 196 |
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bytesRead += len;
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| 197 |
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}
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| 198 |
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return bytesRead;
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| 199 |
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}
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| 200 |
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| 201 |
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/******************************************************************************/
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| 202 |
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/*
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| 203 |
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* Get a string from a socket. This returns data in *buf in a malloced string
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| 204 |
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* after trimming the '\n'. If there is zero bytes returned, *buf will be set
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| 205 |
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* to NULL. If doing non-blocking I/O, it returns -1 for error, EOF or when
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| 206 |
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* no complete line yet read. If doing blocking I/O, it will block until an
|
| 207 |
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* entire line is read. If a partial line is read socketInputBuffered or
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| 208 |
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* socketEof can be used to distinguish between EOF and partial line still
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| 209 |
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* buffered. This routine eats and ignores carriage returns.
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| 210 |
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*/
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| 211 |
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|
| 212 |
|
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int socketGets(int sid, char_t **buf)
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| 213 |
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{
|
| 214 |
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socket_t *sp;
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| 215 |
|
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ringq_t *lq;
|
| 216 |
|
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char c;
|
| 217 |
|
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int rc, len;
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| 218 |
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|
| 219 |
|
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a_assert(buf);
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| 220 |
|
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*buf = NULL;
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| 221 |
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|
| 222 |
|
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if ((sp = socketPtr(sid)) == NULL) {
|
| 223 |
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return -1;
|
| 224 |
|
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}
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| 225 |
|
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lq = &sp->lineBuf;
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| 226 |
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|
| 227 |
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while (1) {
|
| 228 |
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|
| 229 |
|
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if ((rc = socketRead(sid, &c, 1)) < 0) {
|
| 230 |
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return rc;
|
| 231 |
|
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}
|
| 232 |
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|
| 233 |
|
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if (rc == 0) {
|
| 234 |
|
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/*
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| 235 |
|
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* If there is a partial line and we are at EOF, pretend we saw a '\n'
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| 236 |
|
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*/
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| 237 |
|
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if (ringqLen(lq) > 0 && (sp->flags & SOCKET_EOF)) {
|
| 238 |
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c = '\n';
|
| 239 |
|
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} else {
|
| 240 |
|
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return -1;
|
| 241 |
|
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}
|
| 242 |
|
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}
|
| 243 |
|
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/*
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| 244 |
|
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* If a newline is seen, return the data excluding the new line to the
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| 245 |
|
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* caller. If carriage return is seen, just eat it.
|
| 246 |
|
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*/
|
| 247 |
|
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if (c == '\n') {
|
| 248 |
|
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len = ringqLen(lq);
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| 249 |
|
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if (len > 0) {
|
| 250 |
|
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*buf = ballocAscToUni(lq->servp, len);
|
| 251 |
|
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} else {
|
| 252 |
|
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*buf = NULL;
|
| 253 |
|
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}
|
| 254 |
|
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ringqFlush(lq);
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| 255 |
|
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return len;
|
| 256 |
|
|
|
| 257 |
|
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} else if (c == '\r') {
|
| 258 |
|
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continue;
|
| 259 |
|
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}
|
| 260 |
|
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ringqPutcA(lq, c);
|
| 261 |
|
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}
|
| 262 |
|
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return 0;
|
| 263 |
|
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}
|
| 264 |
|
|
|
| 265 |
|
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/******************************************************************************/
|
| 266 |
|
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/*
|
| 267 |
|
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* Flush the socket. Block if the socket is in blocking mode.
|
| 268 |
|
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* This will return -1 on errors and 0 if successful.
|
| 269 |
|
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*/
|
| 270 |
|
|
|
| 271 |
|
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int socketFlush(int sid)
|
| 272 |
|
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{
|
| 273 |
|
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socket_t *sp;
|
| 274 |
|
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ringq_t *rq;
|
| 275 |
|
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int len, bytesWritten, errCode;
|
| 276 |
|
|
|
| 277 |
|
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if ((sp = socketPtr(sid)) == NULL) {
|
| 278 |
|
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return -1;
|
| 279 |
|
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}
|
| 280 |
|
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rq = &sp->outBuf;
|
| 281 |
|
|
|
| 282 |
|
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/*
|
| 283 |
|
|
* Set the background flushing flag which socketEventProc will check to
|
| 284 |
|
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* continue the flush.
|
| 285 |
|
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*/
|
| 286 |
|
|
if (! (sp->flags & SOCKET_BLOCK)) {
|
| 287 |
|
|
sp->flags |= SOCKET_FLUSHING;
|
| 288 |
|
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}
|
| 289 |
|
|
|
| 290 |
|
|
/*
|
| 291 |
|
|
* Break from loop if not blocking after initiating output. If we are blocking
|
| 292 |
|
|
* we wait for a write event.
|
| 293 |
|
|
*/
|
| 294 |
|
|
while (ringqLen(rq) > 0) {
|
| 295 |
|
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len = ringqGetBlkMax(&sp->outBuf);
|
| 296 |
|
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bytesWritten = socketDoOutput(sp, (char*) rq->servp, len, &errCode);
|
| 297 |
|
|
if (bytesWritten < 0) {
|
| 298 |
|
|
if (errCode == EINTR) {
|
| 299 |
|
|
continue;
|
| 300 |
|
|
} else if (errCode == EWOULDBLOCK || errCode == EAGAIN) {
|
| 301 |
|
|
#if WIN || CE
|
| 302 |
|
|
if (sp->flags & SOCKET_BLOCK) {
|
| 303 |
|
|
int errCode;
|
| 304 |
|
|
if (! socketWaitForEvent(sp, FD_WRITE | SOCKET_WRITABLE,
|
| 305 |
|
|
&errCode)) {
|
| 306 |
|
|
return -1;
|
| 307 |
|
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}
|
| 308 |
|
|
continue;
|
| 309 |
|
|
}
|
| 310 |
|
|
#endif
|
| 311 |
|
|
/*
|
| 312 |
|
|
* Ensure we get a FD_WRITE message when the socket can absorb
|
| 313 |
|
|
* more data (non-blocking only.) Store the user's mask if we
|
| 314 |
|
|
* haven't done it already.
|
| 315 |
|
|
*/
|
| 316 |
|
|
if (sp->saveMask < 0 ) {
|
| 317 |
|
|
sp->saveMask = sp->handlerMask;
|
| 318 |
|
|
socketRegisterInterest(sp,
|
| 319 |
|
|
sp->handlerMask | SOCKET_WRITABLE);
|
| 320 |
|
|
}
|
| 321 |
|
|
return 0;
|
| 322 |
|
|
}
|
| 323 |
|
|
return -1;
|
| 324 |
|
|
}
|
| 325 |
|
|
ringqGetBlkAdj(rq, bytesWritten);
|
| 326 |
|
|
}
|
| 327 |
|
|
/*
|
| 328 |
|
|
* If the buffer is empty, reset the ringq pointers to point to the start
|
| 329 |
|
|
* of the buffer. This is essential to ensure that datagrams get written
|
| 330 |
|
|
* in one single I/O operation.
|
| 331 |
|
|
*/
|
| 332 |
|
|
if (ringqLen(rq) == 0) {
|
| 333 |
|
|
ringqFlush(rq);
|
| 334 |
|
|
}
|
| 335 |
|
|
/*
|
| 336 |
|
|
* Restore the users mask if it was saved by the non-blocking code above.
|
| 337 |
|
|
* Note: saveMask = -1 if empty. socketRegisterInterest will set handlerMask
|
| 338 |
|
|
*/
|
| 339 |
|
|
if (sp->saveMask >= 0) {
|
| 340 |
|
|
socketRegisterInterest(sp, sp->saveMask);
|
| 341 |
|
|
sp->saveMask = -1;
|
| 342 |
|
|
}
|
| 343 |
|
|
sp->flags &= ~SOCKET_FLUSHING;
|
| 344 |
|
|
return 0;
|
| 345 |
|
|
}
|
| 346 |
|
|
|
| 347 |
|
|
/******************************************************************************/
|
| 348 |
|
|
/*
|
| 349 |
|
|
* Return the count of input characters buffered. We look at both the line
|
| 350 |
|
|
* buffer and the input (raw) buffer. Return -1 on error or EOF.
|
| 351 |
|
|
*/
|
| 352 |
|
|
|
| 353 |
|
|
int socketInputBuffered(int sid)
|
| 354 |
|
|
{
|
| 355 |
|
|
socket_t *sp;
|
| 356 |
|
|
|
| 357 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 358 |
|
|
return -1;
|
| 359 |
|
|
}
|
| 360 |
|
|
if (socketEof(sid)) {
|
| 361 |
|
|
return -1;
|
| 362 |
|
|
}
|
| 363 |
|
|
return ringqLen(&sp->lineBuf) + ringqLen(&sp->inBuf);
|
| 364 |
|
|
}
|
| 365 |
|
|
|
| 366 |
|
|
/******************************************************************************/
|
| 367 |
|
|
/*
|
| 368 |
|
|
* Return true if EOF
|
| 369 |
|
|
*/
|
| 370 |
|
|
|
| 371 |
|
|
int socketEof(int sid)
|
| 372 |
|
|
{
|
| 373 |
|
|
socket_t *sp;
|
| 374 |
|
|
|
| 375 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 376 |
|
|
return -1;
|
| 377 |
|
|
}
|
| 378 |
|
|
return sp->flags & SOCKET_EOF;
|
| 379 |
|
|
}
|
| 380 |
|
|
|
| 381 |
|
|
/******************************************************************************/
|
| 382 |
|
|
/*
|
| 383 |
|
|
* Return the number of bytes the socket can absorb without blocking
|
| 384 |
|
|
*/
|
| 385 |
|
|
|
| 386 |
|
|
int socketCanWrite(int sid)
|
| 387 |
|
|
{
|
| 388 |
|
|
socket_t *sp;
|
| 389 |
|
|
|
| 390 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 391 |
|
|
return -1;
|
| 392 |
|
|
}
|
| 393 |
|
|
return sp->outBuf.buflen - ringqLen(&sp->outBuf) - 1;
|
| 394 |
|
|
}
|
| 395 |
|
|
|
| 396 |
|
|
/******************************************************************************/
|
| 397 |
|
|
/*
|
| 398 |
|
|
* Add one to allow the user to write exactly SOCKET_BUFSIZ
|
| 399 |
|
|
*/
|
| 400 |
|
|
|
| 401 |
|
|
void socketSetBufferSize(int sid, int in, int line, int out)
|
| 402 |
|
|
{
|
| 403 |
|
|
socket_t *sp;
|
| 404 |
|
|
|
| 405 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 406 |
|
|
return;
|
| 407 |
|
|
}
|
| 408 |
|
|
|
| 409 |
|
|
if (in >= 0) {
|
| 410 |
|
|
ringqClose(&sp->inBuf);
|
| 411 |
|
|
in++;
|
| 412 |
|
|
ringqOpen(&sp->inBuf, in, in);
|
| 413 |
|
|
}
|
| 414 |
|
|
|
| 415 |
|
|
if (line >= 0) {
|
| 416 |
|
|
ringqClose(&sp->lineBuf);
|
| 417 |
|
|
line++;
|
| 418 |
|
|
ringqOpen(&sp->lineBuf, line, line);
|
| 419 |
|
|
}
|
| 420 |
|
|
|
| 421 |
|
|
if (out >= 0) {
|
| 422 |
|
|
ringqClose(&sp->outBuf);
|
| 423 |
|
|
out++;
|
| 424 |
|
|
ringqOpen(&sp->outBuf, out, out);
|
| 425 |
|
|
}
|
| 426 |
|
|
}
|
| 427 |
|
|
|
| 428 |
|
|
/******************************************************************************/
|
| 429 |
|
|
/*
|
| 430 |
|
|
* Create a user handler for this socket. The handler called whenever there
|
| 431 |
|
|
* is an event of interest as defined by handlerMask (SOCKET_READABLE, ...)
|
| 432 |
|
|
*/
|
| 433 |
|
|
|
| 434 |
|
|
void socketCreateHandler(int sid, int handlerMask, socketHandler_t handler,
|
| 435 |
|
|
int data)
|
| 436 |
|
|
{
|
| 437 |
|
|
socket_t *sp;
|
| 438 |
|
|
|
| 439 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 440 |
|
|
return;
|
| 441 |
|
|
}
|
| 442 |
|
|
sp->handler = handler;
|
| 443 |
|
|
sp->handler_data = data;
|
| 444 |
|
|
socketRegisterInterest(sp, handlerMask);
|
| 445 |
|
|
}
|
| 446 |
|
|
|
| 447 |
|
|
/******************************************************************************/
|
| 448 |
|
|
/*
|
| 449 |
|
|
* Delete a handler
|
| 450 |
|
|
*/
|
| 451 |
|
|
|
| 452 |
|
|
void socketDeleteHandler(int sid)
|
| 453 |
|
|
{
|
| 454 |
|
|
socket_t *sp;
|
| 455 |
|
|
|
| 456 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 457 |
|
|
return;
|
| 458 |
|
|
}
|
| 459 |
|
|
sp->handler = NULL;
|
| 460 |
|
|
socketRegisterInterest(sp, 0);
|
| 461 |
|
|
}
|
| 462 |
|
|
|
| 463 |
|
|
/******************************************************************************/
|
| 464 |
|
|
/*
|
| 465 |
|
|
* Socket output procedure. Return -1 on errors otherwise return the number
|
| 466 |
|
|
* of bytes written.
|
| 467 |
|
|
*/
|
| 468 |
|
|
|
| 469 |
|
|
static int socketDoOutput(socket_t *sp, char *buf, int toWrite, int *errCode)
|
| 470 |
|
|
{
|
| 471 |
|
|
struct sockaddr_in server;
|
| 472 |
|
|
int bytes;
|
| 473 |
|
|
|
| 474 |
|
|
a_assert(sp);
|
| 475 |
|
|
a_assert(buf);
|
| 476 |
|
|
a_assert(toWrite > 0);
|
| 477 |
|
|
a_assert(errCode);
|
| 478 |
|
|
|
| 479 |
|
|
*errCode = 0;
|
| 480 |
|
|
|
| 481 |
|
|
#if WIN || CE
|
| 482 |
|
|
if ((sp->flags & SOCKET_ASYNC)
|
| 483 |
|
|
&& ! socketWaitForEvent(sp, FD_CONNECT, errCode)) {
|
| 484 |
|
|
return -1;
|
| 485 |
|
|
}
|
| 486 |
|
|
#endif
|
| 487 |
|
|
|
| 488 |
|
|
/*
|
| 489 |
|
|
* Write the data
|
| 490 |
|
|
*/
|
| 491 |
|
|
if (sp->flags & SOCKET_BROADCAST) {
|
| 492 |
|
|
server.sin_family = AF_INET;
|
| 493 |
|
|
#if UEMF || LITTLEFOOT
|
| 494 |
|
|
server.sin_addr.s_addr = INADDR_BROADCAST;
|
| 495 |
|
|
#else
|
| 496 |
|
|
server.sin_addr.s_addr = inet_addr(basicGetBroadcastAddress());
|
| 497 |
|
|
#endif
|
| 498 |
|
|
server.sin_port = htons((short)(sp->port & 0xFFFF));
|
| 499 |
|
|
if ((bytes = sendto(sp->sock, buf, toWrite, 0,
|
| 500 |
|
|
(struct sockaddr *) &server, sizeof(server))) < 0) {
|
| 501 |
|
|
bytes = tryAlternateSendTo(sp->sock, buf, toWrite, 0,
|
| 502 |
|
|
(struct sockaddr *) &server);
|
| 503 |
|
|
}
|
| 504 |
|
|
} else if (sp->flags & SOCKET_DATAGRAM) {
|
| 505 |
|
|
server.sin_family = AF_INET;
|
| 506 |
|
|
server.sin_addr.s_addr = inet_addr(sp->host);
|
| 507 |
|
|
server.sin_port = htons((short)(sp->port & 0xFFFF));
|
| 508 |
|
|
bytes = sendto(sp->sock, buf, toWrite, 0,
|
| 509 |
|
|
(struct sockaddr *) &server, sizeof(server));
|
| 510 |
|
|
|
| 511 |
|
|
} else {
|
| 512 |
|
|
bytes = send(sp->sock, buf, toWrite, 0);
|
| 513 |
|
|
}
|
| 514 |
|
|
|
| 515 |
|
|
if (bytes < 0) {
|
| 516 |
|
|
*errCode = socketGetError();
|
| 517 |
|
|
#if WIN || CE
|
| 518 |
|
|
sp->currentEvents &= ~FD_WRITE;
|
| 519 |
|
|
#endif
|
| 520 |
|
|
|
| 521 |
|
|
return -1;
|
| 522 |
|
|
|
| 523 |
|
|
} else if (bytes == 0 && bytes != toWrite) {
|
| 524 |
|
|
*errCode = EWOULDBLOCK;
|
| 525 |
|
|
#if WIN || CE
|
| 526 |
|
|
sp->currentEvents &= ~FD_WRITE;
|
| 527 |
|
|
#endif
|
| 528 |
|
|
return -1;
|
| 529 |
|
|
}
|
| 530 |
|
|
|
| 531 |
|
|
/*
|
| 532 |
|
|
* Ensure we get to write some more data real soon if the socket can absorb
|
| 533 |
|
|
* more data
|
| 534 |
|
|
*/
|
| 535 |
|
|
#if !UEMF
|
| 536 |
|
|
#if WIN
|
| 537 |
|
|
if (sp->interestEvents & FD_WRITE) {
|
| 538 |
|
|
emfTime_t blockTime = { 0, 0 };
|
| 539 |
|
|
emfSetMaxBlockTime(&blockTime);
|
| 540 |
|
|
}
|
| 541 |
|
|
#endif /* WIN */
|
| 542 |
|
|
#endif
|
| 543 |
|
|
return bytes;
|
| 544 |
|
|
}
|
| 545 |
|
|
|
| 546 |
|
|
/******************************************************************************/
|
| 547 |
|
|
/*
|
| 548 |
|
|
* If the sendto failed, swap the first two bytes in the
|
| 549 |
|
|
* sockaddr structure. This is a kludge due to a change in
|
| 550 |
|
|
* VxWorks between versions 5.3 and 5.4, but we want the
|
| 551 |
|
|
* product to run on either.
|
| 552 |
|
|
*/
|
| 553 |
|
|
static int tryAlternateSendTo(int sock, char *buf, int toWrite, int i,
|
| 554 |
|
|
struct sockaddr *server)
|
| 555 |
|
|
{
|
| 556 |
|
|
#if VXWORKS
|
| 557 |
|
|
char *ptr;
|
| 558 |
|
|
|
| 559 |
|
|
ptr = (char *)server;
|
| 560 |
|
|
*ptr = *(ptr+1);
|
| 561 |
|
|
*(ptr+1) = 0;
|
| 562 |
|
|
return sendto(sock, buf, toWrite, i, server, sizeof(struct sockaddr));
|
| 563 |
|
|
#else
|
| 564 |
|
|
return -1;
|
| 565 |
|
|
#endif /* VXWORKS */
|
| 566 |
|
|
}
|
| 567 |
|
|
|
| 568 |
|
|
/******************************************************************************/
|
| 569 |
|
|
/*
|
| 570 |
|
|
* Allocate a new socket structure
|
| 571 |
|
|
*/
|
| 572 |
|
|
|
| 573 |
|
|
int socketAlloc(char *host, int port, socketAccept_t accept, int flags)
|
| 574 |
|
|
{
|
| 575 |
|
|
socket_t *sp;
|
| 576 |
|
|
int sid;
|
| 577 |
|
|
|
| 578 |
|
|
if ((sid = hAllocEntry((void***) &socketList, &socketMax,
|
| 579 |
|
|
sizeof(socket_t))) < 0) {
|
| 580 |
|
|
return -1;
|
| 581 |
|
|
}
|
| 582 |
|
|
sp = socketList[sid];
|
| 583 |
|
|
|
| 584 |
|
|
sp->sid = sid;
|
| 585 |
|
|
sp->accept = accept;
|
| 586 |
|
|
sp->port = port;
|
| 587 |
|
|
sp->fileHandle = -1;
|
| 588 |
|
|
sp->saveMask = -1;
|
| 589 |
|
|
|
| 590 |
|
|
if (host) {
|
| 591 |
|
|
strncpy(sp->host, host, sizeof(sp->host));
|
| 592 |
|
|
}
|
| 593 |
|
|
|
| 594 |
|
|
/*
|
| 595 |
|
|
* Preserve only specified flags from the callers open
|
| 596 |
|
|
*/
|
| 597 |
|
|
a_assert((flags & ~(SOCKET_BROADCAST|SOCKET_DATAGRAM|SOCKET_BLOCK|
|
| 598 |
|
|
SOCKET_LISTENING)) == 0);
|
| 599 |
|
|
sp->flags = flags & (SOCKET_BROADCAST | SOCKET_DATAGRAM | SOCKET_BLOCK|
|
| 600 |
|
|
SOCKET_LISTENING);
|
| 601 |
|
|
|
| 602 |
|
|
/*
|
| 603 |
|
|
* Add one to allow the user to write exactly SOCKET_BUFSIZ
|
| 604 |
|
|
*/
|
| 605 |
|
|
ringqOpen(&sp->inBuf, SOCKET_BUFSIZ, SOCKET_BUFSIZ);
|
| 606 |
|
|
ringqOpen(&sp->outBuf, SOCKET_BUFSIZ + 1, SOCKET_BUFSIZ + 1);
|
| 607 |
|
|
ringqOpen(&sp->lineBuf, SOCKET_BUFSIZ, -1);
|
| 608 |
|
|
|
| 609 |
|
|
return sid;
|
| 610 |
|
|
}
|
| 611 |
|
|
|
| 612 |
|
|
/******************************************************************************/
|
| 613 |
|
|
/*
|
| 614 |
|
|
* Free a socket structure
|
| 615 |
|
|
*/
|
| 616 |
|
|
|
| 617 |
|
|
void socketFree(int sid)
|
| 618 |
|
|
{
|
| 619 |
|
|
socket_t *sp;
|
| 620 |
|
|
char_t buf[256];
|
| 621 |
|
|
int i;
|
| 622 |
|
|
|
| 623 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 624 |
|
|
return;
|
| 625 |
|
|
}
|
| 626 |
|
|
|
| 627 |
|
|
/*
|
| 628 |
|
|
* To close a socket, remove any registered interests, set it to
|
| 629 |
|
|
* non-blocking so that the recv which follows won't block, do a
|
| 630 |
|
|
* shutdown on it so peers on the other end will receive a FIN,
|
| 631 |
|
|
* then read any data not yet retrieved from the receive buffer,
|
| 632 |
|
|
* and finally close it. If these steps are not all performed
|
| 633 |
|
|
* RESETs may be sent to the other end causing problems.
|
| 634 |
|
|
*/
|
| 635 |
|
|
socketRegisterInterest(sp, 0);
|
| 636 |
|
|
if (sp->sock >= 0) {
|
| 637 |
|
|
socketSetBlock(sid, 0);
|
| 638 |
|
|
if (shutdown(sp->sock, 1) >= 0) {
|
| 639 |
|
|
recv(sp->sock, buf, sizeof(buf), 0);
|
| 640 |
|
|
}
|
| 641 |
|
|
#if WIN || CE
|
| 642 |
|
|
closesocket(sp->sock);
|
| 643 |
|
|
#else
|
| 644 |
|
|
close(sp->sock);
|
| 645 |
|
|
#endif
|
| 646 |
|
|
}
|
| 647 |
|
|
|
| 648 |
|
|
ringqClose(&sp->inBuf);
|
| 649 |
|
|
ringqClose(&sp->outBuf);
|
| 650 |
|
|
ringqClose(&sp->lineBuf);
|
| 651 |
|
|
|
| 652 |
|
|
bfree(B_L, sp);
|
| 653 |
|
|
socketMax = hFree((void***) &socketList, sid);
|
| 654 |
|
|
|
| 655 |
|
|
/*
|
| 656 |
|
|
* Calculate the new highest socket number
|
| 657 |
|
|
*/
|
| 658 |
|
|
socketHighestFd = -1;
|
| 659 |
|
|
for (i = 0; i < socketMax; i++) {
|
| 660 |
|
|
if ((sp = socketList[i]) == NULL) {
|
| 661 |
|
|
continue;
|
| 662 |
|
|
}
|
| 663 |
|
|
socketHighestFd = max(socketHighestFd, sp->sock);
|
| 664 |
|
|
}
|
| 665 |
|
|
}
|
| 666 |
|
|
|
| 667 |
|
|
/******************************************************************************/
|
| 668 |
|
|
/*
|
| 669 |
|
|
* Validate a socket handle
|
| 670 |
|
|
*/
|
| 671 |
|
|
|
| 672 |
|
|
socket_t *socketPtr(int sid)
|
| 673 |
|
|
{
|
| 674 |
|
|
if (sid < 0 || sid >= socketMax || socketList[sid] == NULL) {
|
| 675 |
|
|
a_assert(NULL);
|
| 676 |
|
|
errno = EBADF;
|
| 677 |
|
|
return NULL;
|
| 678 |
|
|
}
|
| 679 |
|
|
|
| 680 |
|
|
a_assert(socketList[sid]);
|
| 681 |
|
|
return socketList[sid];
|
| 682 |
|
|
}
|
| 683 |
|
|
|
| 684 |
|
|
/******************************************************************************/
|
| 685 |
|
|
/*
|
| 686 |
|
|
* Get the operating system error code
|
| 687 |
|
|
*/
|
| 688 |
|
|
|
| 689 |
|
|
int socketGetError()
|
| 690 |
|
|
{
|
| 691 |
|
|
#if WIN || CE
|
| 692 |
|
|
switch (WSAGetLastError()) {
|
| 693 |
|
|
case WSAEWOULDBLOCK:
|
| 694 |
|
|
return EWOULDBLOCK;
|
| 695 |
|
|
case WSAECONNRESET:
|
| 696 |
|
|
return ECONNRESET;
|
| 697 |
|
|
case WSAENETDOWN:
|
| 698 |
|
|
return ENETDOWN;
|
| 699 |
|
|
case WSAEPROCLIM:
|
| 700 |
|
|
return EAGAIN;
|
| 701 |
|
|
case WSAEINTR:
|
| 702 |
|
|
return EINTR;
|
| 703 |
|
|
default:
|
| 704 |
|
|
return EINVAL;
|
| 705 |
|
|
}
|
| 706 |
|
|
#else
|
| 707 |
|
|
return errno;
|
| 708 |
|
|
#endif
|
| 709 |
|
|
}
|
| 710 |
|
|
|
| 711 |
|
|
/******************************************************************************/
|
| 712 |
|
|
/*
|
| 713 |
|
|
* Return the underlying socket handle
|
| 714 |
|
|
*/
|
| 715 |
|
|
|
| 716 |
|
|
int socketGetHandle(int sid)
|
| 717 |
|
|
{
|
| 718 |
|
|
socket_t *sp;
|
| 719 |
|
|
|
| 720 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 721 |
|
|
return -1;
|
| 722 |
|
|
}
|
| 723 |
|
|
return sp->sock;
|
| 724 |
|
|
}
|
| 725 |
|
|
|
| 726 |
|
|
/******************************************************************************/
|
| 727 |
|
|
/*
|
| 728 |
|
|
* Get blocking mode
|
| 729 |
|
|
*/
|
| 730 |
|
|
|
| 731 |
|
|
int socketGetBlock(int sid)
|
| 732 |
|
|
{
|
| 733 |
|
|
socket_t *sp;
|
| 734 |
|
|
|
| 735 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 736 |
|
|
a_assert(0);
|
| 737 |
|
|
return 0;
|
| 738 |
|
|
}
|
| 739 |
|
|
return (sp->flags & SOCKET_BLOCK);
|
| 740 |
|
|
}
|
| 741 |
|
|
|
| 742 |
|
|
/******************************************************************************/
|
| 743 |
|
|
/*
|
| 744 |
|
|
* Get mode
|
| 745 |
|
|
*/
|
| 746 |
|
|
|
| 747 |
|
|
int socketGetMode(int sid)
|
| 748 |
|
|
{
|
| 749 |
|
|
socket_t *sp;
|
| 750 |
|
|
|
| 751 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 752 |
|
|
a_assert(0);
|
| 753 |
|
|
return 0;
|
| 754 |
|
|
}
|
| 755 |
|
|
return sp->flags;
|
| 756 |
|
|
}
|
| 757 |
|
|
|
| 758 |
|
|
/******************************************************************************/
|
| 759 |
|
|
/*
|
| 760 |
|
|
* Set mode
|
| 761 |
|
|
*/
|
| 762 |
|
|
|
| 763 |
|
|
void socketSetMode(int sid, int mode)
|
| 764 |
|
|
{
|
| 765 |
|
|
socket_t *sp;
|
| 766 |
|
|
|
| 767 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 768 |
|
|
a_assert(0);
|
| 769 |
|
|
return;
|
| 770 |
|
|
}
|
| 771 |
|
|
sp->flags = mode;
|
| 772 |
|
|
}
|
| 773 |
|
|
|
| 774 |
|
|
/******************************************************************************/
|
| 775 |
|
|
/*
|
| 776 |
|
|
* Get port.
|
| 777 |
|
|
*/
|
| 778 |
|
|
|
| 779 |
|
|
int socketGetPort(int sid)
|
| 780 |
|
|
{
|
| 781 |
|
|
socket_t *sp;
|
| 782 |
|
|
|
| 783 |
|
|
if ((sp = socketPtr(sid)) == NULL) {
|
| 784 |
|
|
return -1;
|
| 785 |
|
|
}
|
| 786 |
|
|
return sp->port;
|
| 787 |
|
|
}
|
| 788 |
|
|
|
| 789 |
|
|
/******************************************************************************/
|
