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29 * @(#)terminal.c 8.2 (Berkeley) 2/16/95
30 * $FreeBSD: src/crypto/telnet/telnet/terminal.c,v 1.2.8.2 2002/04/13 10:59:08 markm Exp $
33 #include <arpa/telnet.h>
34 #include <sys/types.h>
43 #include <libtelnet/encrypt.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();
104 * Send as much data as possible to the terminal.
107 * -1: No useful work done, data waiting to go out.
108 * 0: No data was waiting, so nothing was done.
109 * 1: All waiting data was written out.
110 * n: All data - n was written out.
118 n0 = ring_full_count(&ttyoring);
119 if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {
121 TerminalFlushOutput();
122 /* we leave 'n' alone! */
124 n = TerminalWrite(ttyoring.consume, n);
129 Dump('>', ttyoring.consume, n);
132 * If we wrote everything, and the full count is
133 * larger than what we wrote, then write the
134 * rest of the buffer.
136 if (n1 == n && n0 > n) {
139 n1 = TerminalWrite(ttyoring.bottom, n1);
143 ring_consumed(&ttyoring, n);
157 * These routines decides on what the mode should be (based on the values
158 * of various global variables).
167 #ifdef KLUDGELINEMODE
168 extern int kludgelinemode;
171 if (my_want_state_is_dont(TELOPT_ECHO))
177 if (my_want_state_is_will(TELOPT_BINARY))
180 if (his_want_state_is_will(TELOPT_BINARY))
183 #ifdef KLUDGELINEMODE
184 if (kludgelinemode) {
185 if (my_want_state_is_dont(TELOPT_SGA)) {
186 mode |= (MODE_TRAPSIG|MODE_EDIT);
187 if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
194 if (my_want_state_is_will(TELOPT_LINEMODE))
200 setconnmode(int force)
203 static int enc_passwd = 0;
204 #endif /* ENCRYPTION */
207 newmode = getconnmode()|(force?MODE_FORCE:0);
209 TerminalNewMode(newmode);
212 if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
213 if (my_want_state_is_will(TELOPT_ENCRYPT)
214 && (enc_passwd == 0) && !encrypt_output) {
215 encrypt_request_start(0, 0);
220 encrypt_request_end();
224 #endif /* ENCRYPTION */