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#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <unistd.h>
#include <vt100.h>
#include "runes.h"
#include "pty-unix.h"
#include "config.h"
#include "loop.h"
#include "term.h"
#include "window-xlib.h"
extern char **environ;
static int runes_pty_input_cb(void *t);
RunesPty *runes_pty_new()
{
RunesPty *pty;
pty = calloc(1, sizeof(RunesPty));
pty->master = posix_openpt(O_RDWR);
grantpt(pty->master);
unlockpt(pty->master);
return pty;
}
void runes_pty_spawn_subprocess(RunesTerm *t, char *envp[], char *cwd)
{
RunesPty *pty = t->pty;
pty->slave = open(ptsname(pty->master), O_RDWR);
pty->child_pid = fork();
if (pty->child_pid) {
close(pty->slave);
pty->slave = -1;
}
else {
char *cmd, window_id[32];
int old_stderr_fd;
FILE *old_stderr;
old_stderr_fd = dup(2);
fcntl(old_stderr_fd, F_SETFD, FD_CLOEXEC);
old_stderr = fdopen(old_stderr_fd, "w");
setsid();
ioctl(pty->slave, TIOCSCTTY, NULL);
close(pty->master);
dup2(pty->slave, 0);
dup2(pty->slave, 1);
dup2(pty->slave, 2);
close(pty->slave);
if (cwd) {
// XXX
if (chdir(cwd)) {}
}
if (envp) {
environ = envp;
}
/* XXX should use a different TERM value eventually, but for right now
* screen is compatible enough */
setenv("TERM", "screen-256color", 1);
/* gnome-terminal sets this, so avoid confusing applications which
* introspect it. not setting it to something else because as far as i
* can tell, it's not actually useful these days, given that terminfo
* databases are much more reliable than they were 10 years ago */
unsetenv("COLORTERM");
/* less sure about this one being useless, but leaving it unset for now
* until someone complains */
unsetenv("COLORFGBG");
/* this is used by, for instance, w3m */
sprintf(window_id, "%lu", runes_window_get_window_id(t));
setenv("WINDOWID", window_id, 1);
unsetenv("LINES");
unsetenv("COLUMNS");
cmd = t->config->cmd;
if (!cmd) {
cmd = getenv("SHELL");
}
if (!cmd) {
cmd = "/bin/sh";
}
if (strpbrk(cmd, " $")) {
execlp("/bin/sh", "/bin/sh", "-c", cmd, (char *)NULL);
}
else {
execlp(cmd, cmd, (char *)NULL);
}
fprintf(old_stderr, "Couldn't run %s: %s\n", cmd, strerror(errno));
exit(1);
}
}
void runes_pty_init_loop(RunesTerm *t, RunesLoop *loop)
{
RunesPty *pty = t->pty;
runes_term_refcnt_inc(t);
runes_loop_start_work(loop, pty->master, t, runes_pty_input_cb);
}
void runes_pty_set_window_size(
RunesTerm *t, int row, int col, int xpixel, int ypixel)
{
struct winsize size;
size.ws_row = row;
size.ws_col = col;
size.ws_xpixel = xpixel;
size.ws_ypixel = ypixel;
ioctl(t->pty->master, TIOCSWINSZ, &size);
}
void runes_pty_write(RunesTerm *t, char *buf, size_t len)
{
// XXX
if (write(t->pty->master, buf, len)) {}
}
void runes_pty_request_close(RunesTerm *t)
{
RunesPty *pty = t->pty;
kill(pty->child_pid, SIGHUP);
}
void runes_pty_delete(RunesPty *pty)
{
close(pty->master);
free(pty);
}
static int runes_pty_input_cb(void *t)
{
RunesPty *pty = ((RunesTerm *)t)->pty;
pty->readlen = read(
pty->master, pty->readbuf + pty->remaininglen,
RUNES_READ_BUFFER_LENGTH - pty->remaininglen);
if (pty->readlen > 0) {
int to_process = pty->readlen + pty->remaininglen;
int processed = vt100_screen_process_string(
((RunesTerm *)t)->scr, pty->readbuf, to_process);
pty->remaininglen = to_process - processed;
memmove(pty->readbuf, pty->readbuf + processed, pty->remaininglen);
runes_window_flush(t);
return 1;
}
else {
runes_window_request_close(t);
runes_term_refcnt_dec(t);
return 0;
}
}
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