R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 270 insertions, 0 deletions

diff --git a/lbx/lbxexts.c b/lbx/lbxexts.c
new file mode 100644
index 000000000..4ee5f87c6
--- /dev/null
+++ b/lbx/lbxexts.c
@@ -0,0 +1,270 @@
+/* $Xorg: lbxexts.c,v 1.3 2000/08/17 19:53:31 cpqbld Exp $ */
+/*
+ * Copyright 1994 Network Computing Devices, Inc.
+ *
+ * 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 Network Computing Devices, Inc. not be
+ * used in advertising or publicity pertaining to distribution of this
+ * software without specific, written prior permission.
+ *
+ * THIS SOFTWARE IS PROVIDED `AS-IS'.  NETWORK COMPUTING DEVICES, INC.,
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
+ * LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE, OR NONINFRINGEMENT.  IN NO EVENT SHALL NETWORK
+ * COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
+ * SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA,
+ * OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF
+ * WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "X.h"
+#include "Xproto.h"
+#include "misc.h"
+#include "dixstruct.h"
+#define _XLBX_SERVER_
+#include "lbxstr.h"
+#ifdef XCSECURITY
+#define _SECURITY_SERVER
+#include "extensions/security.h"
+#endif
+
+typedef struct _lbxext {
+    char       *name;
+    char      **aliases;
+    int         num_aliases;
+    int         idx;
+    int         opcode;
+    int         ev_base;
+    int         err_base;
+    int         num_reqs;
+    CARD8      *rep_mask;
+    CARD8      *ev_mask;
+#ifdef XCSECURITY
+    Bool	secure;
+#endif
+}           LbxExtensionEntry;
+
+static LbxExtensionEntry **lbx_extensions = NULL;
+static int  num_exts = 0;
+
+
+Bool
+LbxAddExtension(name, opcode, ev_base, err_base)
+    char       *name;
+    int         opcode;
+    int         ev_base,
+                err_base;
+{
+    int         i;
+    register LbxExtensionEntry *ext,
+              **newexts;
+
+    ext = (LbxExtensionEntry *) xalloc(sizeof(LbxExtensionEntry));
+    if (!ext)
+	return FALSE;
+    ext->name = (char *) xalloc(strlen(name) + 1);
+    ext->num_aliases = 0;
+    ext->aliases = (char **) NULL;
+    if (!ext->name) {
+	xfree(ext);
+	return FALSE;
+    }
+    strcpy(ext->name, name);
+    i = num_exts;
+    newexts = (LbxExtensionEntry **) xrealloc(lbx_extensions,
+				      (i + 1) * sizeof(LbxExtensionEntry *));
+    if (!newexts) {
+	xfree(ext->name);
+	xfree(ext);
+	return FALSE;
+    }
+    num_exts++;
+    lbx_extensions = newexts;
+    lbx_extensions[i] = ext;
+    ext->idx = i;
+
+    ext->opcode = opcode;;
+    ext->ev_base = ev_base;;
+    ext->err_base = err_base;
+    ext->ev_mask = NULL;
+    ext->rep_mask = NULL;
+    ext->num_reqs = 0;
+#ifdef XCSECURITY
+    ext->secure = FALSE;
+#endif
+
+    return TRUE;
+}
+
+Bool
+LbxAddExtensionAlias(idx, alias)
+    int         idx;
+    char       *alias;
+{
+    char       *name;
+    char      **aliases;
+    LbxExtensionEntry *ext = lbx_extensions[idx];
+
+    aliases = (char **) xrealloc(ext->aliases,
+				 (ext->num_aliases + 1) * sizeof(char *));
+    if (!aliases)
+	return FALSE;
+    ext->aliases = aliases;
+    name = (char *) xalloc(strlen(alias) + 1);
+    if (!name)
+	return FALSE;
+    strcpy(name, alias);
+    ext->aliases[ext->num_aliases] = name;
+    ext->num_aliases++;
+    return TRUE;
+}
+
+static int
+LbxFindExtension(extname, len)
+    char *extname;
+    int len;
+{
+    int i, j;
+
+    for (i = 0; i < num_exts; i++) {
+	if ((strlen(lbx_extensions[i]->name) == len) &&
+		(strncmp(lbx_extensions[i]->name, extname, len) == 0))
+	    return i;
+	for (j = lbx_extensions[i]->num_aliases; --j >= 0;) {
+	    if ((strlen(lbx_extensions[i]->aliases[j]) == len) &&
+		(strncmp(lbx_extensions[i]->aliases[j], extname, len) == 0))
+		return i;
+	}
+    }
+    return -1;
+}
+
+void
+LbxDeclareExtensionSecurity(extname, secure)
+    char *extname;
+    Bool secure;
+{
+#ifdef XCSECURITY
+    int i = LbxFindExtension(extname, strlen(extname));
+    if (i >= 0)
+	lbx_extensions[i]->secure = secure;
+#endif
+}
+
+Bool
+LbxRegisterExtensionGenerationMasks(idx, num_reqs, rep_mask, ev_mask)
+    int         idx;
+    int         num_reqs;
+    char       *rep_mask,
+               *ev_mask;
+{
+    LbxExtensionEntry *ext = lbx_extensions[idx];
+    CARD8      *nrm,
+               *nem;
+    int         mlen = mlen = num_reqs / (8 * sizeof(CARD8)) + 1;
+
+    nrm = (CARD8 *) xalloc(sizeof(CARD8) * mlen);
+    nem = (CARD8 *) xalloc(sizeof(CARD8) * mlen);
+
+    if (!nrm || !nem) {
+	xfree(nrm);
+	xfree(nem);
+	return FALSE;
+    }
+    memcpy((char *) nrm, (char *) rep_mask, mlen);
+    memcpy((char *) nem, (char *) ev_mask, mlen);
+    ext->rep_mask = nrm;
+    ext->ev_mask = nem;
+    ext->num_reqs = num_reqs;
+
+    return TRUE;
+}
+
+int
+LbxQueryExtension(client, ename, nlen)
+    ClientPtr   client;
+    char       *ename;
+    int         nlen;
+{
+    xLbxQueryExtensionReply rep;
+    int         i;
+    int         mlen = 0;
+
+    rep.type = X_Reply;
+    rep.sequenceNumber = client->sequence;
+    rep.major_opcode = 0;
+    rep.present = FALSE;
+    rep.length = 0;
+    rep.pad0 = rep.pad1 = rep.pad2 = rep.pad3 = rep.pad4 = 0;
+
+    i = LbxFindExtension(ename, nlen);
+
+    if (i < 0
+#ifdef XCSECURITY
+	    /* don't show insecure extensions to untrusted clients */
+	    || (client->trustLevel == XSecurityClientUntrusted &&
+		!lbx_extensions[i]->secure)
+#endif
+	)
+	rep.present = FALSE;
+    else {
+	rep.present = TRUE;
+	rep.major_opcode = lbx_extensions[i]->opcode;
+	rep.first_event = lbx_extensions[i]->ev_base;
+	rep.first_error = lbx_extensions[i]->err_base;
+	rep.numReqs = lbx_extensions[i]->num_reqs;
+	if (lbx_extensions[i]->rep_mask) {
+	    mlen = (lbx_extensions[i]->num_reqs + 7) >> 3;
+	    rep.length = ((mlen + 3) >> 2) * 2;
+	}
+    }
+    if (client->swapped) {
+    	char	n;
+
+	swaps(&rep.sequenceNumber, n);
+	swapl(&rep.length, n);
+    }
+    WriteToClient(client, sizeof(xLbxQueryExtensionReply), (char *)&rep);
+    if (mlen) {
+	WriteToClient(client, mlen, (char *)lbx_extensions[i]->rep_mask);
+	WriteToClient(client, mlen, (char *)lbx_extensions[i]->ev_mask);
+    }
+    return Success;
+}
+
+LbxCloseDownExtensions()
+{
+    int         i;
+
+    for (i = 0; i < num_exts; i++) {
+	xfree(lbx_extensions[i]->name);
+	xfree(lbx_extensions[i]->aliases);
+	xfree(lbx_extensions[i]->rep_mask);
+	xfree(lbx_extensions[i]->ev_mask);
+	xfree(lbx_extensions[i]);
+    }
+    xfree(lbx_extensions);
+    lbx_extensions = NULL;
+    num_exts = 0;
+}
+
+void
+LbxSetReqMask(mask, req, on)
+    CARD8      *mask;
+    int         req;
+    Bool        on;
+{
+    int         mword = req / (8 * sizeof(CARD8));
+
+    req = req % (8 * sizeof(CARD8));
+    if (on) {
+	mask[mword] |= (1 << req);
+    } else {
+	mask[mword] &= ~(1 << req);
+    }
+}