diff options
| author | Markus Friedl <markus@cvs.openbsd.org> | 2001-09-17 21:04:03 +0000 |
|---|---|---|
| committer | Markus Friedl <markus@cvs.openbsd.org> | 2001-09-17 21:04:03 +0000 |
| commit | 644551fbb63047ba5057ae0fccd69d865204adb3 (patch) | |
| tree | 0150db39197a27b5bd61b3fe6bbcb7476adae469 /usr.bin/ssh | |
| parent | f85c2dae5600c72139cc708f2fb397e35da2c919 (diff) | |
don't send fake dummy packets on CR (\r)
bugreport from yyua@cs.sfu.ca via solar@@openwall.com
Diffstat (limited to 'usr.bin/ssh')
| -rw-r--r-- | usr.bin/ssh/channels.c | 11 | ||||
| -rw-r--r-- | usr.bin/ssh/serverloop.c | 12 |
2 files changed, 15 insertions, 8 deletions
diff --git a/usr.bin/ssh/channels.c b/usr.bin/ssh/channels.c index 5c75f556a4f..82cf8fe077b 100644 --- a/usr.bin/ssh/channels.c +++ b/usr.bin/ssh/channels.c @@ -39,7 +39,7 @@ */ #include "includes.h" -RCSID("$OpenBSD: channels.c,v 1.133 2001/09/17 20:52:47 markus Exp $"); +RCSID("$OpenBSD: channels.c,v 1.134 2001/09/17 21:04:01 markus Exp $"); #include "ssh.h" #include "ssh1.h" @@ -1292,14 +1292,17 @@ static int channel_handle_wfd(Channel *c, fd_set * readset, fd_set * writeset) { struct termios tio; + u_char *data; + u_int dlen; int len; /* Send buffered output data to the socket. */ if (c->wfd != -1 && FD_ISSET(c->wfd, writeset) && buffer_len(&c->output) > 0) { - len = write(c->wfd, buffer_ptr(&c->output), - buffer_len(&c->output)); + data = buffer_ptr(&c->output); + dlen = buffer_len(&c->output); + len = write(c->wfd, data, dlen); if (len < 0 && (errno == EINTR || errno == EAGAIN)) return 1; if (len <= 0) { @@ -1316,7 +1319,7 @@ channel_handle_wfd(Channel *c, fd_set * readset, fd_set * writeset) } return -1; } - if (compat20 && c->isatty) { + if (compat20 && c->isatty && dlen >= 1 && data[0] != '\r') { if (tcgetattr(c->wfd, &tio) == 0 && !(tio.c_lflag & ECHO) && (tio.c_lflag & ICANON)) { /* diff --git a/usr.bin/ssh/serverloop.c b/usr.bin/ssh/serverloop.c index ebdf2a3f4e3..dbe5d21664a 100644 --- a/usr.bin/ssh/serverloop.c +++ b/usr.bin/ssh/serverloop.c @@ -35,7 +35,7 @@ */ #include "includes.h" -RCSID("$OpenBSD: serverloop.c,v 1.76 2001/07/17 21:04:58 markus Exp $"); +RCSID("$OpenBSD: serverloop.c,v 1.77 2001/09/17 21:04:02 markus Exp $"); #include "xmalloc.h" #include "packet.h" @@ -349,12 +349,15 @@ static void process_output(fd_set * writeset) { struct termios tio; + u_char *data; + u_int dlen; int len; /* Write buffered data to program stdin. */ if (!compat20 && fdin != -1 && FD_ISSET(fdin, writeset)) { - len = write(fdin, buffer_ptr(&stdin_buffer), - buffer_len(&stdin_buffer)); + data = buffer_ptr(&stdin_buffer); + dlen = buffer_len(&stdin_buffer); + len = write(fdin, data, dlen); if (len < 0 && (errno == EINTR || errno == EAGAIN)) { /* do nothing */ } else if (len <= 0) { @@ -369,7 +372,8 @@ process_output(fd_set * writeset) fdin = -1; } else { /* Successful write. */ - if (fdin_is_tty && tcgetattr(fdin, &tio) == 0 && + if (fdin_is_tty && dlen >= 1 && data[0] != '\r' && + tcgetattr(fdin, &tio) == 0 && !(tio.c_lflag & ECHO) && (tio.c_lflag & ICANON)) { /* * Simulate echo to reduce the impact of |