adding zephyr-im master branch

2022-07-25 09:01:27 -06:00
parent 61f5ed8f01
commit ee1236fa5c
311 changed files with 62265 additions and 0 deletions
--- a/lib/ZFmtAuth.c
+++ b/lib/ZFmtAuth.c
@ -0,0 +1,134 @@
+/* This file is part of the Project Athena Zephyr Notification System.
+ * It contains source for the ZFormatAuthenticNotice function.
+ *
+ *	Created by:	Robert French
+ *
+ *	$Id$
+ *
+ *	Copyright (c) 1987,1988 by the Massachusetts Institute of Technology.
+ *	For copying and distribution information, see the file
+ *	"mit-copyright.h".
+ */
+
+#ifndef lint
+static const char rcsid_ZFormatAuthenticNotice_c[] = "$Id$";
+#endif
+
+#include <internal.h>
+
+#ifdef HAVE_KRB4
+Code_t
+ZFormatAuthenticNotice(ZNotice_t *notice,
+		       char *buffer,
+		       int buffer_len,
+		       int *len,
+		       C_Block session)
+{
+    ZNotice_t newnotice;
+    char *ptr;
+    int retval, hdrlen;
+
+    newnotice = *notice;
+    newnotice.z_auth = 1;
+    newnotice.z_authent_len = 0;
+    newnotice.z_ascii_authent = "";
+
+    if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
+				    &hdrlen, &ptr, NULL)) != ZERR_NONE)
+	return (retval);
+
+    newnotice.z_checksum =
+	(ZChecksum_t)des_quad_cksum((void *)buffer, NULL, ptr - buffer, 0, (C_Block *)session);
+
+    if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
+				    &hdrlen, NULL, NULL)) != ZERR_NONE)
+	return (retval);
+
+    ptr = buffer+hdrlen;
+
+    if (newnotice.z_message_len+hdrlen > buffer_len)
+	return (ZERR_PKTLEN);
+
+    (void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len);
+
+    *len = hdrlen+newnotice.z_message_len;
+
+    if (*len > Z_MAXPKTLEN)
+	return (ZERR_PKTLEN);
+
+    return (ZERR_NONE);
+}
+#endif
+
+#ifdef HAVE_KRB5
+Code_t
+ZFormatAuthenticNoticeV5(ZNotice_t *notice,
+			 register char *buffer,
+			 register int buffer_len,
+			 int *len,
+			 krb5_keyblock *keyblock)
+{
+    ZNotice_t newnotice;
+    char *ptr;
+    int retval, hdrlen, hdr_adj;
+    krb5_enctype enctype;
+    krb5_cksumtype cksumtype;
+#ifdef HAVE_KRB4
+    int key_len;
+#endif
+    char *cksum_start, *cstart, *cend;
+    int cksum_len;
+
+#ifdef HAVE_KRB4
+    key_len = Z_keylen(keyblock);
+#endif
+    retval = Z_ExtractEncCksum(keyblock, &enctype, &cksumtype);
+    if (retval)
+	return (ZAUTH_FAILED);
+
+#ifdef HAVE_KRB4
+    if (key_len == 8 && (enctype == (krb5_enctype)ENCTYPE_DES_CBC_CRC ||
+                         enctype == (krb5_enctype)ENCTYPE_DES_CBC_MD4 ||
+                         enctype == (krb5_enctype)ENCTYPE_DES_CBC_MD5)) {
+         C_Block tmp;
+         memcpy(&tmp, Z_keydata(keyblock), key_len);
+         return ZFormatAuthenticNotice(notice, buffer, buffer_len, len,
+                                       tmp);
+    }
+#endif
+
+    newnotice = *notice;
+    newnotice.z_auth = 1;
+    newnotice.z_authent_len = 0;
+    newnotice.z_ascii_authent = "";
+
+    if ((retval = Z_NewFormatRawHeader(&newnotice, buffer, buffer_len,
+                                       &hdrlen,
+                                       &cksum_start, &cksum_len, &cstart,
+                                       &cend)) != ZERR_NONE)
+	return (retval);
+
+    /* we know this is only called by the server */
+    retval = Z_InsertZcodeChecksum(keyblock, &newnotice, buffer,
+                                   cksum_start, cksum_len, cstart, cend,
+                                   buffer_len, &hdr_adj, 1);
+    if (retval)
+	return retval;
+
+    hdrlen += hdr_adj;
+
+    ptr = buffer+hdrlen;
+
+    if (newnotice.z_message_len+hdrlen > buffer_len)
+	 return (ZERR_PKTLEN);
+
+    (void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len);
+
+    *len = hdrlen+newnotice.z_message_len;
+
+    if (*len > Z_MAXPKTLEN)
+	return (ZERR_PKTLEN);
+
+    return (ZERR_NONE);
+}
+#endif