2 * Copyright (c) 1988, 1990, 1993
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17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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32 static const char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95";
36 #include <arpa/telnet.h>
37 #include <sys/types.h>
47 #include <libtelnet/encrypt.h>
50 Ring ttyoring, ttyiring;
51 unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
53 int termdata; /* Debugging flag */
60 cc_t termLiteralNextChar;
92 * initialize the terminal data structures.
98 if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
101 if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
104 autoflush = TerminalAutoFlush();
108 * Send as much data as possible to the terminal, else exits if
109 * it encounters a permanent failure when writing to the tty.
112 * -1: No useful work done, data waiting to go out.
113 * 0: No data was waiting, so nothing was done.
114 * 1: All waiting data was written out.
115 * n: All data - n was written out.
123 n0 = ring_full_count(&ttyoring);
124 if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
126 TerminalFlushOutput();
127 /* we leave 'n' alone! */
129 n = TerminalWrite(ttyoring.consume, n);
134 Dump('>', ttyoring.consume, n);
137 * If we wrote everything, and the full count is
138 * larger than what we wrote, then write the
139 * rest of the buffer.
141 if (n1 == n && n0 > n) {
144 n1 = TerminalWrite(ttyoring.bottom, n1);
148 ring_consumed(&ttyoring, n);
151 if (errno == EAGAIN || errno == EINTR) {
154 ring_consumed(&ttyoring, ring_full_count(&ttyoring));
158 fprintf(stderr, "Write error on local output.\n");
173 * These routines decides on what the mode should be (based on the values
174 * of various global variables).
183 #ifdef KLUDGELINEMODE
184 extern int kludgelinemode;
187 if (my_want_state_is_dont(TELOPT_ECHO))
193 if (my_want_state_is_will(TELOPT_BINARY))
196 if (his_want_state_is_will(TELOPT_BINARY))
199 #ifdef KLUDGELINEMODE
200 if (kludgelinemode) {
201 if (my_want_state_is_dont(TELOPT_SGA)) {
202 mode |= (MODE_TRAPSIG|MODE_EDIT);
203 if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
210 if (my_want_state_is_will(TELOPT_LINEMODE))
216 setconnmode(int force)
219 static int enc_passwd = 0;
220 #endif /* ENCRYPTION */
223 newmode = getconnmode()|(force?MODE_FORCE:0);
225 TerminalNewMode(newmode);
228 if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
229 if (my_want_state_is_will(TELOPT_ENCRYPT)
230 && (enc_passwd == 0) && !encrypt_output) {
231 encrypt_request_start(0, 0);
236 encrypt_request_end();
240 #endif /* ENCRYPTION */