2 * Copyright (c) 1988, 1990, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
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35 static char sccsid[] = "@(#)terminal.c 8.1 (Berkeley) 6/6/93";
38 #include <arpa/telnet.h>
39 #include <sys/types.h>
46 Ring ttyoring, ttyiring;
47 unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
49 int termdata; /* Debugging flag */
56 cc_t termLiteralNextChar;
88 * initialize the terminal data structures.
94 if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
97 if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
100 autoflush = TerminalAutoFlush();
105 * Send as much data as possible to the terminal.
108 * -1: No useful work done, data waiting to go out.
109 * 0: No data was waiting, so nothing was done.
110 * 1: All waiting data was written out.
111 * n: All data - n was written out.
119 register int n, n0, n1;
121 n0 = ring_full_count(&ttyoring);
122 if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
124 TerminalFlushOutput();
125 /* we leave 'n' alone! */
127 n = TerminalWrite(ttyoring.consume, n);
132 Dump('>', ttyoring.consume, n);
135 * If we wrote everything, and the full count is
136 * larger than what we wrote, then write the
137 * rest of the buffer.
139 if (n1 == n && n0 > n) {
142 n1 = TerminalWrite(ttyoring.bottom, n1);
146 ring_consumed(&ttyoring, n);
160 * These routines decides on what the mode should be (based on the values
161 * of various global variables).
170 #ifdef KLUDGELINEMODE
171 extern int kludgelinemode;
177 if (my_want_state_is_dont(TELOPT_ECHO))
183 if (my_want_state_is_will(TELOPT_BINARY))
186 if (his_want_state_is_will(TELOPT_BINARY))
189 #ifdef KLUDGELINEMODE
190 if (kludgelinemode) {
191 if (my_want_state_is_dont(TELOPT_SGA)) {
192 mode |= (MODE_TRAPSIG|MODE_EDIT);
193 if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
200 if (my_want_state_is_will(TELOPT_LINEMODE))
209 register int newmode;
211 newmode = getconnmode()|(force?MODE_FORCE:0);
213 TerminalNewMode(newmode);