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-rw-r--r--libXdmcp/Wrap.c261
1 files changed, 128 insertions, 133 deletions
diff --git a/libXdmcp/Wrap.c b/libXdmcp/Wrap.c
index d8a032abc..0ee7a175b 100644
--- a/libXdmcp/Wrap.c
+++ b/libXdmcp/Wrap.c
@@ -1,133 +1,128 @@
-/*
- * $Xorg: Wrap.c,v 1.4 2001/02/09 02:03:49 xorgcvs Exp $
- *
- *
-Copyright 1989, 1998 The Open Group
-
-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.
-
-The above copyright notice and this permission notice 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
-OPEN GROUP 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.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
- * *
- * Author: Keith Packard, MIT X Consortium
- */
-
-/* $XFree86: xc/lib/Xdmcp/Wrap.c,v 1.3 2001/01/17 19:42:44 dawes Exp $ */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <X11/Xos.h>
-#include <X11/X.h>
-#include <X11/Xmd.h>
-#include <X11/Xdmcp.h>
-
-#ifdef HASXDMAUTH
-
-/*
- * The following function exists only to demonstrate the
- * desired functional interface for this routine. You will
- * need to add the appropriate algorithm if you wish to
- * use XDM-AUTHENTICATION-1/XDM-AUTHORIZATION-1.
- *
- * Examine the XDMCP specification for the correct algorithm
- */
-
-#include "Wrap.h"
-
-void
-XdmcpWrap (
- unsigned char *input,
- unsigned char *wrapper,
- unsigned char *output,
- int bytes)
-{
- int i, j;
- int len;
- unsigned char tmp[8];
- unsigned char expand_wrapper[8];
- auth_wrapper_schedule schedule;
-
- _XdmcpWrapperToOddParity (wrapper, expand_wrapper);
- _XdmcpAuthSetup (expand_wrapper, schedule);
- for (j = 0; j < bytes; j += 8)
- {
- len = 8;
- if (bytes - j < len)
- len = bytes - j;
- /* block chaining */
- for (i = 0; i < len; i++)
- {
- if (j == 0)
- tmp[i] = input[i];
- else
- tmp[i] = input[j + i] ^ output[j - 8 + i];
- }
- for (; i < 8; i++)
- {
- if (j == 0)
- tmp[i] = 0;
- else
- tmp[i] = 0 ^ output[j - 8 + i];
- }
- _XdmcpAuthDoIt (tmp, (output + j), schedule, 1);
- }
-}
-
-/*
- * Given a 56 bit wrapper in XDMCP format, create a 56
- * bit wrapper in 7-bits + odd parity format
- */
-
-static int
-OddParity (unsigned char c)
-{
- c = c ^ (c >> 4);
- c = c ^ (c >> 2);
- c = c ^ (c >> 1);
- return ~c & 0x1;
-}
-
-/*
- * Spread the 56 bit wrapper among 8 bytes, using the upper 7 bits
- * of each byte, and storing an odd parity bit in the low bit
- */
-
-void
-_XdmcpWrapperToOddParity (
- unsigned char *in,
- unsigned char *out)
-{
- int ashift, bshift;
- int i;
- unsigned char c;
-
- ashift = 7;
- bshift = 1;
- for (i = 0; i < 7; i++)
- {
- c = ((in[i] << ashift) | (in[i+1] >> bshift)) & 0x7f;
- out[i] = (c << 1) | OddParity (c);
- ashift--;
- bshift++;
- }
- c = in[i];
- out[i] = (c << 1) | OddParity(c);
-}
-
-#endif
+/*
+Copyright 1989, 1998 The Open Group
+
+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.
+
+The above copyright notice and this permission notice 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
+OPEN GROUP 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.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+ * *
+ * Author: Keith Packard, MIT X Consortium
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <X11/Xos.h>
+#include <X11/X.h>
+#include <X11/Xmd.h>
+#include <X11/Xdmcp.h>
+
+#ifdef HASXDMAUTH
+
+/*
+ * The following function exists only to demonstrate the
+ * desired functional interface for this routine. You will
+ * need to add the appropriate algorithm if you wish to
+ * use XDM-AUTHENTICATION-1/XDM-AUTHORIZATION-1.
+ *
+ * Examine the XDMCP specification for the correct algorithm
+ */
+
+#include "Wrap.h"
+
+void
+XdmcpWrap (
+ unsigned char *input,
+ unsigned char *wrapper,
+ unsigned char *output,
+ int bytes)
+{
+ int i, j;
+ int len;
+ unsigned char tmp[8];
+ unsigned char expand_wrapper[8];
+ auth_wrapper_schedule schedule;
+
+ _XdmcpWrapperToOddParity (wrapper, expand_wrapper);
+ _XdmcpAuthSetup (expand_wrapper, schedule);
+ for (j = 0; j < bytes; j += 8)
+ {
+ len = 8;
+ if (bytes - j < len)
+ len = bytes - j;
+ /* block chaining */
+ for (i = 0; i < len; i++)
+ {
+ if (j == 0)
+ tmp[i] = input[i];
+ else
+ tmp[i] = input[j + i] ^ output[j - 8 + i];
+ }
+ for (; i < 8; i++)
+ {
+ if (j == 0)
+ tmp[i] = 0;
+ else
+ tmp[i] = 0 ^ output[j - 8 + i];
+ }
+ _XdmcpAuthDoIt (tmp, (output + j), schedule, 1);
+ }
+}
+
+/*
+ * Given a 56 bit wrapper in XDMCP format, create a 56
+ * bit wrapper in 7-bits + odd parity format
+ */
+
+static int
+OddParity (unsigned char c)
+{
+ c = c ^ (c >> 4);
+ c = c ^ (c >> 2);
+ c = c ^ (c >> 1);
+ return ~c & 0x1;
+}
+
+/*
+ * Spread the 56 bit wrapper among 8 bytes, using the upper 7 bits
+ * of each byte, and storing an odd parity bit in the low bit
+ */
+
+void
+_XdmcpWrapperToOddParity (
+ unsigned char *in,
+ unsigned char *out)
+{
+ int ashift, bshift;
+ int i;
+ unsigned char c;
+
+ ashift = 7;
+ bshift = 1;
+ for (i = 0; i < 7; i++)
+ {
+ c = ((in[i] << ashift) | (in[i+1] >> bshift)) & 0x7f;
+ out[i] = (c << 1) | OddParity (c);
+ ashift--;
+ bshift++;
+ }
+ c = in[i];
+ out[i] = (c << 1) | OddParity(c);
+}
+
+#endif
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