/* $Xorg: imTransR.c,v 1.4 2000/08/17 19:45:16 cpqbld Exp $ */ /****************************************************************** Copyright 1992 by Sun Microsystems, Inc. Copyright 1992, 1993, 1994 by FUJITSU LIMITED Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Sun Microsystems, Inc. and FUJITSU LIMITED not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. Sun Microsystems, Inc. and FUJITSU LIMITED makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. Sun Microsystems Inc. AND FUJITSU LIMITED DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL Sun Microsystems, Inc. AND FUJITSU LIMITED BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. Author: Hideki Hiura (hhiura@Sun.COM) Sun Microsystems, Inc. Takashi Fujiwara FUJITSU LIMITED fujiwara@a80.tech.yk.fujitsu.co.jp ******************************************************************/ /* $XFree86: xc/lib/X11/imTransR.c,v 3.6 2003/04/17 02:39:56 dawes Exp $ */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "Xlibint.h" #include "Xlcint.h" #include "XimTrInt.h" #include "Ximint.h" Public TransportSW _XimTransportRec[] = { { "X", _XimXConf }, /* 1st entry must be X. This will be a fallback */ #ifdef TCPCONN { "tcp", _XimTransConf }, /* use X transport lib */ #endif /* TCPCONN */ #if defined(UNIXCONN) || defined(LOCALCONN) { "local", _XimTransConf }, /* use X transport lib */ #endif /* UNIXCONN */ #ifdef DNETCONN { "dnet", _XimTransConf }, /* use X transport lib */ #endif /* DNETCONN */ #ifdef STREAMSCONN { "streams", _XimTransConf }, /* use X transport lib */ #endif /* STREAMSCONN */ { (char *)NULL, (Bool (*)(Xim, char *))NULL }, }; Public Bool _XimConnect(im) Xim im; { return im->private.proto.connect(im); } Public Bool _XimShutdown(im) Xim im; { return im->private.proto.shutdown(im); } Public Bool _XimWrite(Xim im, INT16 len, XPointer data) { return im->private.proto.write(im, len, data); } Private int _CheckProtocolData( Xim im, char *recv_buf) { int data_len; data_len = (int)(((*((CARD16 *)recv_buf + 1)) * 4) + XIM_HEADER_SIZE); return data_len; } Private int _XimReadData( Xim im, INT16 *len, XPointer buf, int buf_size) { char *hold_buf; char *tmp; int data_len; int packet_size; int ret_len; register int i; if (buf_size < XIM_HEADER_SIZE) { *len = (INT16)XIM_HEADER_SIZE; return XIM_OVERFLOW; } bzero(buf, buf_size); packet_size = 0; data_len = 0; if ((hold_buf = im->private.proto.hold_data)) { data_len = im->private.proto.hold_data_len; if (data_len >= XIM_HEADER_SIZE) { packet_size = _CheckProtocolData(im, hold_buf); if (packet_size > buf_size) { *len = (INT16)packet_size; return XIM_OVERFLOW; } if (packet_size <= data_len) { memcpy(buf, hold_buf, packet_size); for (i = packet_size; i < data_len; i++) { if (hold_buf[i]) break; } data_len -= i; if (data_len) { if (!(tmp = (char *)Xmalloc(data_len))) { return XIM_FALSE; } memcpy(tmp, &hold_buf[i], data_len); im->private.proto.hold_data = tmp; im->private.proto.hold_data_len = data_len; } else { im->private.proto.hold_data = 0; im->private.proto.hold_data_len = 0; } Xfree(hold_buf); *len = (INT16)packet_size; return XIM_TRUE; } } memcpy(buf, hold_buf, data_len); buf_size -= data_len; Xfree(hold_buf); im->private.proto.hold_data = 0; im->private.proto.hold_data_len = 0; } if (!packet_size) { while (data_len < XIM_HEADER_SIZE) { if (!(im->private.proto.read(im, (XPointer)&buf[data_len], buf_size, &ret_len))) { return XIM_FALSE; } data_len += ret_len; buf_size -= ret_len; } packet_size = _CheckProtocolData(im, buf); } if (packet_size > buf_size) { if (!(tmp = (char *)Xmalloc(data_len))) { return XIM_FALSE; } memcpy(tmp, buf, data_len); bzero(buf, data_len); im->private.proto.hold_data = tmp; im->private.proto.hold_data_len = data_len; *len = (INT16)packet_size; return XIM_OVERFLOW; } while (data_len < packet_size) { if (!(im->private.proto.read(im, (XPointer)&buf[data_len], buf_size, &ret_len))) { return XIM_FALSE; } data_len += ret_len; buf_size -= ret_len; } for (i = packet_size; i < data_len; i++) { if (buf[i]) break; } data_len -= i; if (data_len) { if (!(tmp = (char *)Xmalloc(data_len))) { return XIM_FALSE; } memcpy(tmp, &buf[i], data_len); bzero(&buf[i], data_len); im->private.proto.hold_data = tmp; im->private.proto.hold_data_len = data_len; } else { im->private.proto.hold_data = 0; im->private.proto.hold_data_len = 0; } *len = (INT16)packet_size; return XIM_TRUE; } Private Bool _XimCallDispatcher( Xim im, INT16 len, XPointer data) { return im->private.proto.call_dispatcher(im, len, data); } Public int _XimRead(im, len, buf, buf_size, predicate, arg) Xim im; INT16 *len; XPointer buf; int buf_size; Bool (*predicate)( Xim, INT16, XPointer, XPointer ); XPointer arg; { INT16 read_len; int ret_code; for (;;) { ret_code = _XimReadData(im, &read_len, buf, buf_size); if(ret_code != XIM_TRUE) { return ret_code; } if ((*predicate)(im, read_len, buf, arg)) break; if (_XimCallDispatcher(im, read_len, buf)) continue; _XimError(im, 0, XIM_BadProtocol, (INT16)0, (CARD16)0, (char *)NULL); } *len = read_len; return True; } Public Bool _XimRegisterDispatcher( Xim im, Bool (*callback)( Xim, INT16, XPointer, XPointer ), XPointer call_data) { return im->private.proto.register_dispatcher(im, callback, call_data); } Public void _XimFlush(im) Xim im; { im->private.proto.flush(im); return; } Public Bool _XimFilterWaitEvent(im) Xim im; { INT16 read_len; CARD32 reply32[BUFSIZE/4]; char *reply = (char *)reply32; XPointer preply; int buf_size; int ret_code; buf_size = BUFSIZE; ret_code = _XimReadData(im, &read_len, (XPointer)reply, buf_size); if(ret_code == XIM_TRUE) { preply = reply; } else if(ret_code == XIM_OVERFLOW) { if(read_len <= 0) { preply = reply; } else { buf_size = (int)read_len; preply = (XPointer)Xmalloc(buf_size); ret_code = _XimReadData(im, &read_len, preply, buf_size); if(ret_code != XIM_TRUE) { if (preply != reply) Xfree(preply); return False; } } } else { return False; } if (_XimCallDispatcher(im, read_len, preply)) { if(reply != preply) Xfree(preply); return True; } _XimError(im, 0, XIM_BadProtocol, (INT16)0, (CARD16)0, (char *)NULL); if(reply != preply) Xfree(preply); return True; }