diff options
author | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
---|---|---|
committer | Cameron Katri <me@cameronkatri.com> | 2021-05-09 14:20:58 -0400 |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /remote_cmds/telnet.tproj/ring.h | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'remote_cmds/telnet.tproj/ring.h')
-rw-r--r-- | remote_cmds/telnet.tproj/ring.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/remote_cmds/telnet.tproj/ring.h b/remote_cmds/telnet.tproj/ring.h new file mode 100644 index 0000000..6b8d11d --- /dev/null +++ b/remote_cmds/telnet.tproj/ring.h @@ -0,0 +1,107 @@ +/* + * Copyright (c) 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)ring.h 8.1 (Berkeley) 6/6/93 + * $FreeBSD: src/contrib/telnet/telnet/ring.h,v 1.4 2001/11/30 22:28:07 markm Exp $ + */ + +#if defined(P) +# undef P +#endif + +#if defined(__STDC__) || defined(LINT_ARGS) +# define P(x) x +#else +# define P(x) () +#endif + +/* + * This defines a structure for a ring buffer. + * + * The circular buffer has two parts: + *((( + * full: [consume, supply) + * empty: [supply, consume) + *]]] + * + */ +typedef struct { + unsigned char *consume, /* where data comes out of */ + *supply, /* where data comes in to */ + *bottom, /* lowest address in buffer */ + *top, /* highest address+1 in buffer */ + *mark; /* marker (user defined) */ +#ifdef ENCRYPTION + unsigned char *clearto; /* Data to this point is clear text */ + unsigned char *encryyptedto; /* Data is encrypted to here */ +#endif /* ENCRYPTION */ + int size; /* size in bytes of buffer */ + u_long consumetime, /* help us keep straight full, empty, etc. */ + supplytime; +} Ring; + +/* Here are some functions and macros to deal with the ring buffer */ + +/* Initialization routine */ +extern int + ring_init(Ring *ring, unsigned char *buffer, int count); + +/* Data movement routines */ +extern void + ring_supply_data(Ring *ring, unsigned char *buffer, int count); +#ifdef notdef +extern void + ring_consume_data(Ring *ring, unsigned char *buffer, int count); +#endif + +/* Buffer state transition routines */ +extern void + ring_supplied(Ring *ring, int count), + ring_consumed(Ring *ring, int count); + +/* Buffer state query routines */ +extern int + ring_at_mark(Ring *), + ring_empty_count(Ring *ring), + ring_empty_consecutive(Ring *ring), + ring_full_count(Ring *ring), + ring_full_consecutive(Ring *ring); + +#ifdef ENCRYPTION +extern void + ring_encrypt(Ring *ring, void (*func)(unsigned char *, int)), + ring_clearto(Ring *ring); +#endif /* ENCRYPTION */ + +extern void + ring_clear_mark(Ring *), + ring_mark(Ring *); |