terminal.c
资源名称:socks5.zip [点击查看]
上传用户:sddyfurun
上传日期:2007-01-04
资源大小:525k
文件大小:6k
源码类别:
代理服务器
开发平台:
Unix_Linux
- /* Copyright (c) 1988, 1990, 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. */
- #ifdef SHOW_SCCSIDS
- static char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95";
- #endif
- #include <arpa/telnet.h>
- #include <sys/types.h>
- #include "ring.h"
- #include "externs.h"
- #include "types.h"
- Ring ttyoring, ttyiring;
- unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
- int termdata; /* Debugging flag */
- #ifdef USE_TERMIO
- # ifndef VDISCARD
- cc_t termFlushChar;
- # endif
- # ifndef VLNEXT
- cc_t termLiteralNextChar;
- # endif
- # ifndef VSUSP
- cc_t termSuspChar;
- # endif
- # ifndef VWERASE
- cc_t termWerasChar;
- # endif
- # ifndef VREPRINT
- cc_t termRprntChar;
- # endif
- # ifndef VSTART
- cc_t termStartChar;
- # endif
- # ifndef VSTOP
- cc_t termStopChar;
- # endif
- # ifndef VEOL
- cc_t termForw1Char;
- # endif
- # ifndef VEOL2
- cc_t termForw2Char;
- # endif
- # ifndef VSTATUS
- cc_t termAytChar;
- # endif
- #else
- cc_t termForw2Char;
- cc_t termAytChar;
- #endif
- /*
- * initialize the terminal data structures.
- */
- void
- init_terminal()
- {
- if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
- exit(1);
- }
- if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
- exit(1);
- }
- autoflush = TerminalAutoFlush();
- }
- /*
- * Send as much data as possible to the terminal.
- *
- * Return value:
- * -1: No useful work done, data waiting to go out.
- * 0: No data was waiting, so nothing was done.
- * 1: All waiting data was written out.
- * n: All data - n was written out.
- */
- int
- ttyflush(drop)
- int drop;
- {
- register int n, n0, n1;
- n0 = ring_full_count(&ttyoring);
- if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
- if (drop) {
- TerminalFlushOutput();
- /* we leave 'n' alone! */
- } else {
- n = TerminalWrite((char *)ttyoring.consume, n);
- }
- }
- if (n > 0) {
- if (termdata && n) {
- Dump('>', ttyoring.consume, n);
- }
- /*
- * If we wrote everything, and the full count is
- * larger than what we wrote, then write the
- * rest of the buffer.
- */
- if (n1 == n && n0 > n) {
- n1 = n0 - n;
- if (!drop)
- n1 = TerminalWrite((char *)ttyoring.bottom, n1);
- if (n1 > 0)
- n += n1;
- }
- ring_consumed(&ttyoring, n);
- }
- if (n < 0)
- return -1;
- if (n == n0) {
- if (n0)
- return -1;
- return 0;
- }
- return n0 - n + 1;
- }
- /*
- * These routines decides on what the mode should be (based on the values
- * of various global variables).
- */
- int
- getconnmode()
- {
- extern int linemode;
- int mode = 0;
- #ifdef KLUDGELINEMODE
- extern int kludgelinemode;
- #endif
- if (In3270)
- return(MODE_FLOW);
- if (my_want_state_is_dont(TELOPT_ECHO))
- mode |= MODE_ECHO;
- if (localflow)
- mode |= MODE_FLOW;
- if (my_want_state_is_will(TELOPT_BINARY))
- mode |= MODE_INBIN;
- if (his_want_state_is_will(TELOPT_BINARY))
- mode |= MODE_OUTBIN;
- #ifdef KLUDGELINEMODE
- if (kludgelinemode) {
- if (my_want_state_is_dont(TELOPT_SGA)) {
- mode |= (MODE_TRAPSIG|MODE_EDIT);
- if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
- mode &= ~MODE_ECHO;
- }
- }
- return(mode);
- }
- #endif
- if (my_want_state_is_will(TELOPT_LINEMODE))
- mode |= linemode;
- return(mode);
- }
- void
- setconnmode(force)
- int force;
- {
- register int newmode;
- newmode = getconnmode()|(force?MODE_FORCE:0);
- TerminalNewMode(newmode);
- }
- void
- setcommandmode()
- {
- TerminalNewMode(-1);
- }