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-rw-r--r--src/nyancat.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/src/nyancat.c b/src/nyancat.c
index f5ba004..88e0998 100644
--- a/src/nyancat.c
+++ b/src/nyancat.c
@@ -180,8 +180,8 @@ void set_options() {
telnet_willack[ECHO] = DO;
/* The client can set a graphics mode */
telnet_willack[SGA] = DO;
- /* The client should not change the window size */
- telnet_willack[NAWS] = DONT;
+ /* The client should not change, but it should tell us its window size */
+ telnet_willack[NAWS] = DO;
/* The client should tell us its terminal type (very important) */
telnet_willack[TTYPE] = DO;
/* No linemode */
@@ -262,7 +262,7 @@ int main(int argc, char ** argv) {
alarm(1);
/* Let's do this */
- while (!feof(stdin) && !done) {
+ while (!feof(stdin) && done < 2) {
/* Get either IAC (start command) or a regular character (break, unless in SB mode) */
unsigned char i = getchar();
unsigned char opt = 0;
@@ -278,7 +278,14 @@ int main(int argc, char ** argv) {
* that this should be a terminal type */
alarm(0);
strcpy(term, &sb[2]);
- goto ready;
+ done++;
+ }
+ else if (sb[0] == NAWS) {
+ /* This was a response to the NAWS command, meaning
+ * that this should be a window size */
+ alarm(0);
+ terminal_width = sb[2];
+ done++;
}
break;
case NOP:
@@ -326,7 +333,7 @@ int main(int argc, char ** argv) {
break;
case IAC:
/* IAC IAC? That's probably not right. */
- done = 1;
+ done = 2;
break;
default:
break;
@@ -338,7 +345,7 @@ int main(int argc, char ** argv) {
* but only if it doesn't put us over
* our limit; honestly, we shouldn't hit
* the limit, as we're only collecting characters
- * for a terminal type, but better safe than
+ * for a terminal type or window size, but better safe than
* sorry (and vulernable).
*/
sb[sb_len] = i;
@@ -361,7 +368,7 @@ int main(int argc, char ** argv) {
if(terminal_width > 80) terminal_width = 80;
}
-
+
/*
* Labels. Yes, and I used a goto.
* If you're going to complain about this, you