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Don't attempt to open() the tty path, rely on the client sending its stdin fd

Browse Source 
with imsg and fatal if it doesn't, then set the FD_CLOEXEC flag in tty_init
instead of tty_open to prevent them leaking into child processes if any are
created between the two calls.

This bumps the protocol version, so the tmux server should be killed before
upgrading.
This commit is contained in:
Nicholas Marriott
2009-09-23 06:05:02 +00:00
parent 0a9005678d
commit 64caf59e84
4 changed files with 39 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
server-msg.c
View File

@ -74,6 +74,8 @@ server_msg_dispatch(struct client *c)
case MSG_IDENTIFY:
if (datalen != sizeof identifydata)
fatalx("bad MSG_IDENTIFY size");
if (imsg.fd == -1)
fatalx("MSG_IDENTIFY missing fd");
memcpy(&identifydata, imsg.data, sizeof identifydata);
server_msg_identify(c, &identifydata, imsg.fd);
@ -243,21 +245,13 @@ error:
void
server_msg_identify(struct client *c, struct msg_identify_data *data, int fd)
{
c->tty.sx = data->sx;
if (c->tty.sx == 0)
c->tty.sx = 80;
c->tty.sy = data->sy;
if (c->tty.sy == 0)
c->tty.sy = 24;
c->cwd = NULL;
data->cwd[(sizeof data->cwd) - 1] = '\0';
if (*data->cwd != '\0')
c->cwd = xstrdup(data->cwd);
data->tty[(sizeof data->tty) - 1] = '\0';
data->term[(sizeof data->term) - 1] = '\0';
tty_init(&c->tty, fd, data->tty, data->term);
tty_init(&c->tty, fd, data->term);
if (data->flags & IDENTIFY_UTF8)
c->tty.flags |= TTY_UTF8;
if (data->flags & IDENTIFY_256COLOURS)
@ -267,6 +261,13 @@ server_msg_identify(struct client *c, struct msg_identify_data *data, int fd)
if (data->flags & IDENTIFY_HASDEFAULTS)
c->tty.term_flags |= TERM_HASDEFAULTS;
c->tty.sx = data->sx;
if (c->tty.sx == 0)
c->tty.sx = 80;
c->tty.sy = data->sy;
if (c->tty.sy == 0)
c->tty.sy = 24;
c->flags |= CLIENT_TERMINAL;
}