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33 * @(#)terminal.c 8.2 (Berkeley) 2/16/95
34 * $FreeBSD: src/usr.bin/telnet/terminal.c,v 1.3.6.1 2002/04/13 11:07:13 markm Exp $
35 * $DragonFly: src/usr.bin/telnet/terminal.c,v 1.2 2003/06/17 04:29:32 dillon Exp $
38 #include <arpa/telnet.h>
39 #include <sys/types.h>
47 Ring ttyoring, ttyiring;
48 unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
50 int termdata; /* Debugging flag */
57 cc_t termLiteralNextChar;
89 * initialize the terminal data structures.
95 if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
98 if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
101 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 n0 = ring_full_count(&ttyoring);
120 if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
122 TerminalFlushOutput();
123 /* we leave 'n' alone! */
125 n = TerminalWrite(ttyoring.consume, n);
130 Dump('>', ttyoring.consume, n);
133 * If we wrote everything, and the full count is
134 * larger than what we wrote, then write the
135 * rest of the buffer.
137 if (n1 == n && n0 > n) {
140 n1 = TerminalWrite(ttyoring.bottom, n1);
144 ring_consumed(&ttyoring, n);
158 * These routines decides on what the mode should be (based on the values
159 * of various global variables).
168 #ifdef KLUDGELINEMODE
169 extern int kludgelinemode;
172 if (my_want_state_is_dont(TELOPT_ECHO))
178 if (my_want_state_is_will(TELOPT_BINARY))
181 if (his_want_state_is_will(TELOPT_BINARY))
184 #ifdef KLUDGELINEMODE
185 if (kludgelinemode) {
186 if (my_want_state_is_dont(TELOPT_SGA)) {
187 mode |= (MODE_TRAPSIG|MODE_EDIT);
188 if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
195 if (my_want_state_is_will(TELOPT_LINEMODE))
201 setconnmode(int force)
205 newmode = getconnmode()|(force?MODE_FORCE:0);
207 TerminalNewMode(newmode);