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33 * @(#)terminal.c 8.2 (Berkeley) 2/16/95
34 * $FreeBSD: src/crypto/telnet/telnet/terminal.c,v 1.2.8.2 2002/04/13 10:59:08 markm Exp $
35 * $DragonFly: src/crypto/telnet/telnet/terminal.c,v 1.2 2003/06/17 04:24:37 dillon Exp $
38 #include <arpa/telnet.h>
39 #include <sys/types.h>
48 #include <libtelnet/encrypt.h>
51 Ring ttyoring, ttyiring;
52 unsigned char ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
54 int termdata; /* Debugging flag */
61 cc_t termLiteralNextChar;
93 * initialize the terminal data structures.
99 if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
102 if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
105 autoflush = TerminalAutoFlush();
109 * Send as much data as possible to the terminal.
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);
162 * These routines decides on what the mode should be (based on the values
163 * of various global variables).
172 #ifdef KLUDGELINEMODE
173 extern int kludgelinemode;
176 if (my_want_state_is_dont(TELOPT_ECHO))
182 if (my_want_state_is_will(TELOPT_BINARY))
185 if (his_want_state_is_will(TELOPT_BINARY))
188 #ifdef KLUDGELINEMODE
189 if (kludgelinemode) {
190 if (my_want_state_is_dont(TELOPT_SGA)) {
191 mode |= (MODE_TRAPSIG|MODE_EDIT);
192 if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
199 if (my_want_state_is_will(TELOPT_LINEMODE))
205 setconnmode(int force)
208 static int enc_passwd = 0;
209 #endif /* ENCRYPTION */
212 newmode = getconnmode()|(force?MODE_FORCE:0);
214 TerminalNewMode(newmode);
217 if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
218 if (my_want_state_is_will(TELOPT_ENCRYPT)
219 && (enc_passwd == 0) && !encrypt_output) {
220 encrypt_request_start(0, 0);
225 encrypt_request_end();
229 #endif /* ENCRYPTION */