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34 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD: src/crypto/telnet/telnet/terminal.c,v 1.2.8.2 2002/04/13 10:59:08 markm Exp $");
39 static const char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95";
42 #include <arpa/telnet.h>
43 #include <sys/types.h>
51 #include <libtelnet/encrypt.h>
54 Ring ttyoring, ttyiring;
55 unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
57 int termdata; /* Debugging flag */
64 cc_t termLiteralNextChar;
96 * initialize the terminal data structures.
102 if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
105 if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
108 autoflush = TerminalAutoFlush();
112 * Send as much data as possible to the terminal.
115 * -1: No useful work done, data waiting to go out.
116 * 0: No data was waiting, so nothing was done.
117 * 1: All waiting data was written out.
118 * n: All data - n was written out.
126 n0 = ring_full_count(&ttyoring);
127 if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
129 TerminalFlushOutput();
130 /* we leave 'n' alone! */
132 n = TerminalWrite(ttyoring.consume, n);
137 Dump('>', ttyoring.consume, n);
140 * If we wrote everything, and the full count is
141 * larger than what we wrote, then write the
142 * rest of the buffer.
144 if (n1 == n && n0 > n) {
147 n1 = TerminalWrite(ttyoring.bottom, n1);
151 ring_consumed(&ttyoring, n);
165 * These routines decides on what the mode should be (based on the values
166 * of various global variables).
175 #ifdef KLUDGELINEMODE
176 extern int kludgelinemode;
179 if (my_want_state_is_dont(TELOPT_ECHO))
185 if (my_want_state_is_will(TELOPT_BINARY))
188 if (his_want_state_is_will(TELOPT_BINARY))
191 #ifdef KLUDGELINEMODE
192 if (kludgelinemode) {
193 if (my_want_state_is_dont(TELOPT_SGA)) {
194 mode |= (MODE_TRAPSIG|MODE_EDIT);
195 if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
202 if (my_want_state_is_will(TELOPT_LINEMODE))
208 setconnmode(int force)
211 static int enc_passwd = 0;
212 #endif /* ENCRYPTION */
215 newmode = getconnmode()|(force?MODE_FORCE:0);
217 TerminalNewMode(newmode);
220 if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
221 if (my_want_state_is_will(TELOPT_ENCRYPT)
222 && (enc_passwd == 0) && !encrypt_output) {
223 encrypt_request_start(0, 0);
228 encrypt_request_end();
232 #endif /* ENCRYPTION */