diff options
| -rw-r--r-- | networking/telnet.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/networking/telnet.c b/networking/telnet.c index b700fbed9..58a691916 100644 --- a/networking/telnet.c +++ b/networking/telnet.c @@ -187,27 +187,34 @@ static void con_escape(void) static void handle_net_output(int len) { byte outbuf[2 * DATABUFSIZE]; - byte *p = (byte*)G.buf; - int j = 0; + byte *dst = outbuf; + byte *src = (byte*)G.buf; + byte *end = src + len; - for (; len > 0; len--, p++) { - byte c = *p; + while (src < end) { + byte c = *src++; if (c == 0x1d) { con_escape(); return; } - outbuf[j++] = c; + *dst = c; if (c == IAC) - outbuf[j++] = c; /* IAC -> IAC IAC */ - else if (c == '\r') - /* See RFC 1123 3.3.1 Telnet End-of-Line Convention. + *++dst = c; /* IAC -> IAC IAC */ + else + if (c == '\r' || c == '\n') { + /* Enter key sends '\r' in raw mode and '\n' in cooked one. + * + * See RFC 1123 3.3.1 Telnet End-of-Line Convention. * Using CR LF instead of other allowed possibilities * like CR NUL - easier to talk to HTTP/SMTP servers. */ - outbuf[j++] = '\n'; /* CR -> CR LF */ + *dst = '\r'; /* Enter -> CR LF */ + *++dst = '\n'; + } + dst++; } - if (j > 0) - full_write(netfd, outbuf, j); + if (dst - outbuf != 0) + full_write(netfd, outbuf, dst - outbuf); } static void handle_net_input(int len) |