/*
* do_write - actually make the connection
*/
void
do_write(char *tty, char *mytty, uid_t myuid)
{
char *login, *nows;
struct passwd *pwd;
time_t now;
char path[PATH_MAX], host[HOST_NAME_MAX+1], line[512];
gid_t gid;
int fd;
/* Determine our login name before the we reopen() stdout */
if ((login = getlogin()) == NULL) {
if ((pwd = getpwuid(myuid)))
login = pwd->pw_name;
else
login = "******";
}
(void)snprintf(path, sizeof(path), "%s%s", _PATH_DEV, tty);
fd = open(path, O_WRONLY, 0666);
if (fd == -1)
err(1, "open %s", path);
fflush(stdout);
if (dup2(fd, STDOUT_FILENO) == -1)
err(1, "dup2 %s", path);
if (fd != STDOUT_FILENO)
close(fd);
/* revoke privs, now that we have opened the tty */
gid = getgid();
if (setresgid(gid, gid, gid) == -1)
err(1, "setresgid");
/*
* Unfortunately this is rather late - well after utmp
* parsing, then pinned by the tty open and setresgid
*/
if (pledge("stdio", NULL) == -1)
err(1, "pledge");
(void)signal(SIGINT, done);
(void)signal(SIGHUP, done);
/* print greeting */
if (gethostname(host, sizeof(host)) < 0)
(void)strlcpy(host, "???", sizeof host);
now = time(NULL);
nows = ctime(&now);
nows[16] = '\0';
(void)printf("\r\n\007\007\007Message from %s@%s on %s at %s ...\r\n",
login, host, mytty, nows + 11);
while (fgets(line, sizeof(line), stdin) != NULL)
wr_fputs(line);
}
/*
* do_write - actually make the connection
*/
static void
do_write(const char *tty, const char *mytty, uid_t myuid, int *mymsgok)
{
const char *login;
char *nows;
struct passwd *pwd;
time_t now;
char path[MAXPATHLEN], host[MAXHOSTNAMELEN], line[512];
/* Determine our login name before we reopen() stdout */
if ((login = getlogin()) == NULL) {
if ((pwd = getpwuid(myuid)))
login = pwd->pw_name;
else
login = "******";
}
snprintf(path, sizeof(path), "%s%s", _PATH_DEV, tty);
if ((freopen(path, "w", stdout)) == NULL)
err(1, "%s", path);
signal(SIGINT, done);
signal(SIGHUP, done);
/* print greeting */
if (gethostname(host, sizeof(host)) < 0)
strlcpy(host, "???", sizeof host);
now = time(NULL);
nows = ctime(&now);
nows[16] = '\0';
printf("\r\n\007\007\007Message from %s@%s on %s at %s (%s %s replies)...\r\n",
login, host, mytty, nows + 11, login, *mymsgok == 0 ? "does not accept" : "accepts");
while (fgets(line, sizeof(line), stdin) != NULL)
wr_fputs(line);
}
