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Diffstat (limited to 'nx-X11/lib/src/LiHosts.c')
| -rw-r--r-- | nx-X11/lib/src/LiHosts.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/nx-X11/lib/src/LiHosts.c b/nx-X11/lib/src/LiHosts.c new file mode 100644 index 000000000..29c36ffb5 --- /dev/null +++ b/nx-X11/lib/src/LiHosts.c @@ -0,0 +1,157 @@ +/* + +Copyright 1986, 1998 The Open Group + +All rights reserved. + +Permission is hereby granted, free of charge, to any person obtaining a +copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, and/or sell copies of the Software, and to permit persons +to whom the Software is furnished to do so, provided that the above +copyright notice(s) and this permission notice appear in all copies of +the Software and that both the above copyright notice(s) and this +permission notice appear in supporting documentation. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT +OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR +HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR 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. + +Except as contained in this notice, the name of a copyright holder +shall not be used in advertising or otherwise to promote the sale, use +or other dealings in this Software without prior written authorization +of the copyright holder. + +X Window System is a trademark of The Open Group. + +*/ + +/* + * Copyright 2004 Oracle and/or its affiliates. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +/* This can really be considered an os dependent routine */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" +#include <limits.h> + +/* + * can be freed using XFree. + */ + +XHostAddress *XListHosts ( + register Display *dpy, + int *nhosts, /* RETURN */ + Bool *enabled) /* RETURN */ +{ + register XHostAddress *outbuf = NULL, *op; + xListHostsReply reply; + unsigned char *buf, *bp; + register unsigned i; + _X_UNUSED register xListHostsReq *req; + XServerInterpretedAddress *sip; + + *nhosts = 0; + LockDisplay(dpy); + GetReq (ListHosts, req); + + if (!_XReply (dpy, (xReply *) &reply, 0, xFalse)) { + UnlockDisplay(dpy); + SyncHandle(); + return (XHostAddress *) NULL; + } + + if (reply.nHosts) { + unsigned long nbytes = reply.length << 2; /* number of bytes in reply */ + const unsigned long max_hosts = INT_MAX / + (sizeof(XHostAddress) + sizeof(XServerInterpretedAddress)); + + if (reply.nHosts < max_hosts) { + unsigned long hostbytes = reply.nHosts * + (sizeof(XHostAddress) + sizeof(XServerInterpretedAddress)); + + if (reply.length < (INT_MAX >> 2) && + (hostbytes >> 2) < ((INT_MAX >> 2) - reply.length)) + outbuf = Xmalloc(nbytes + hostbytes); + } + + if (! outbuf) { + _XEatDataWords(dpy, reply.length); + UnlockDisplay(dpy); + SyncHandle(); + return (XHostAddress *) NULL; + } + op = outbuf; + sip = (XServerInterpretedAddress *) + (((unsigned char *) outbuf) + (reply.nHosts * sizeof(XHostAddress))); + bp = buf = ((unsigned char *) sip) + + (reply.nHosts * sizeof(XServerInterpretedAddress)); + + _XRead (dpy, (char *) buf, nbytes); + + for (i = 0; i < reply.nHosts; i++) { + op->family = ((xHostEntry *) bp)->family; + op->length =((xHostEntry *) bp)->length; + if (op->family == FamilyServerInterpreted) { + char *tp = (char *) (bp + SIZEOF(xHostEntry)); + char *vp = memchr(tp, 0, op->length); + + if (vp != NULL) { + sip->type = tp; + sip->typelength = vp - tp; + sip->value = vp + 1; + sip->valuelength = op->length - (sip->typelength + 1); + } else { + sip->type = sip->value = NULL; + sip->typelength = sip->valuelength = 0; + } + op->address = (char *) sip; + sip++; + } else { + op->address = (char *) (bp + SIZEOF(xHostEntry)); + } + bp += SIZEOF(xHostEntry) + (((op->length + 3) >> 2) << 2); + op++; + } + } + + *enabled = reply.enabled; + *nhosts = reply.nHosts; + UnlockDisplay(dpy); + SyncHandle(); + return (outbuf); +} + + + + + |