* Makefile.in (OBJS, SRCS): Add strnlen.o, strnlen.c

	* Makefile.in (OBJS, SRCS): Add strnlen.o, strnlen.c

	* cr_auth_repl.c: Audit.  Fix up copyright.  Use new KRB4_PUT*
	macros for encoding so output is always big-endian.  Precompute
	string lengths for better length-checking.

	* cr_ciph.c: Audit.  Fix up copyright.  Use new KRB4_PUT* macros
	for encoding so that output is always big-endian.  Precompute
	string lengths for better length-checking.  Zero out the key
	schedule after encrypting.

	* cr_death_pkt.c: Audit.  Fix up copyright.  Precompute string
	lengths for better length-checking.

	* cr_err_repl.c: Audit.  Fix up copyright.  Use moving pointer to
	do encoding.  Precompute string lengths for better
	length-checking.  Use KRB4_PUT* macros so that output is always
	big-endian.

	* cr_tkt.c: Audit.  Fix up copyright.  Use KRB4_PUT* macros for
	encoding so that output is always big-endian.  Zero out the key
	schedule after encrypting.

	* decomp_tkt.c: Audit.  Fix up copyright.  Use krb_strnlen() for
	actually detecting string length errors.  Use a struct in_addr to
	retrieve the IP address and assign it to paddress for return.  Use
	KRB4_GET* macros for decoding to avoid byteswapping problems.
	Zero out session key and decrypted ticket on error.

	* g_ad_tkt.c: Audit.  Fix up copyright.  Break out parsing of
	decrypted KDC reply packet into a separate function to simplify
	error handling somewhat.  Precompute string lengths for better
	length-checking.  Use KRB4_PUT* macros for encoding so that output
	is always big-endian.  Use KRB4_GET* macros for decoding to avoid
	byteswapping problems.  Stomp on session key on error conditions.

	* g_in_tkt.c: Audit.  Fix up copyright.  Precompute string lengths
	for better length-checking.  Use KRB4_PUT* macros for encoding so
	output is always big-endian.  Use KRB4_GET* macros for decoding to
	avoid byteswapping problems.  Use krb_strnlen() to actually detect
	string length errors.  Zero out session key and decrypted KDC
	reply once they're no longer useful.

	* mk_auth.c: Audit.  Fix up copyright.  Use moving pointer for
	encoding.  Use KRB4_PUT* macros for encoding to avoid alignment
	issues with using memcpy().  Use KRB4_GET* macros for decoding to
	avoid alignment issues with using memcpy().

	* mk_err.c: Audit.  Fix up copyright.  Precompute string length.
	Use KRB4_PUT* macros to always encode as big-endian.

	* mk_preauth.c: Audit.  Zero out key schedule after encryption.

	* mk_priv.c: Audit.  Fix up copyright.  Use KRB4_PUT* macros for
	encoding so output is always big-endian.

	* mk_req.c: Audit.  Fix up copyright.  Use moving pointer for
	encoding.  Precompute string lengths for better length-checking.
	Use KRB4_PUT* macros for encoding so output is always big-endian.
	Zero out session key after encryption.

	* mk_safe.c: Audit.  Fix up copyright.  Use KRB4_PUT* macros for
	encoding so output is always big-endian.

	* rd_err.c: Audit.  Fix up copyright.  Use KRB4_GET* macros to
	avoid alignment issues.

	* rd_preauth.c: Audit.  Zero key schedule after decrypting.

	* rd_priv.c: Audit.  Fix up copyright.  Use KRB4_GET* macros to
	avoid alignment issues.

	* rd_req.c: Audit.  Fix up copyright.

	* send_to_kdc.c (send_recv): Actually set rpkt->length, since some
	callers actually use it now to do length-checking.

	* strnlen.c: New file; compute string length, bounded by a
	maximum.  If the maximum number of characters has been read
	without encountering a NUL character, return -1.  This makes
	overflow checking of strings in buffers much easier.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@12859 dc483132-0cff-0310-8789-dd5450dbe970