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Handle IAC (well ignore it)

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This commit is contained in:
Andrew Pamment 2020-10-12 17:10:28 +10:00
parent 318b385ce4
commit 29a19692fe
1 changed files with 34 additions and 0 deletions
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34
MD_Getc.c
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@ -10,12 +10,17 @@
#include <string.h> #include <string.h>
#include "MagiDoor.h" #include "MagiDoor.h"
#define IAC 255
extern time_t mdtimeout; extern time_t mdtimeout;
extern time_t mdtimeremaining; extern time_t mdtimeremaining;
char md_getc() { char md_getc() {
char c; char c;
ssize_t ret; ssize_t ret;
int stage = 0;
while (1) { while (1) {
if (mdcontrol.socket == -1) { if (mdcontrol.socket == -1) {
ret = read(STDIN_FILENO, &c, 1); ret = read(STDIN_FILENO, &c, 1);
@ -41,6 +46,35 @@ char md_getc() {
usleep(100); usleep(100);
continue; continue;
} }
if (mdcontrol.socket != -1) {
if ((unsigned char)c == IAC && stage == 0) {
stage = 1;
continue;
}
if (stage == 1) {
if ((unsigned char)c == IAC) {
stage = 0;
} else if ((unsigned char)c == 250) {
stage = 3;
continue;
} else {
stage = 2;
continue;
}
}
if (stage == 2) {
stage = 0;
continue;
}
if (stage == 3) {
if ((unsigned char)c == 240) {
stage = 0;
}
continue;
}
}
mdtimeout = time(NULL) + 900; mdtimeout = time(NULL) + 900;
return c; return c;
} }