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#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdint.h>
#include <signal.h>
#include "util.h"
#include "terminal.h"
pid_t child;
void cleanup_terminal()
{
kill(child, SIGKILL);
unlink(INPUT_PATH);
unlink(OUTPUT_PATH);
}
static char init_done;
void force_no_terminal()
{
init_done = 1;
}
void init_terminal()
{
if (!init_done) {
if (!(isatty(STDIN_FILENO) && isatty(STDOUT_FILENO))) {
#ifndef __APPLE__
//check to see if x-terminal-emulator exists, just use xterm if it doesn't
char *term = system("which x-terminal-emulator > /dev/null") ? "xterm" : "x-terminal-emulator";
#endif
//get rid of FIFO's if they already exist
unlink(INPUT_PATH);
unlink(OUTPUT_PATH);
//create FIFOs for talking to helper process in terminal app
mkfifo(INPUT_PATH, 0666);
mkfifo(OUTPUT_PATH, 0666);
//close existing file descriptors
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
child = fork();
if (child == -1) {
//error, oh well
warning("Failed to fork for terminal spawn");
} else if (!child) {
//child process, exec our terminal emulator
#ifdef __APPLE__
execlp("open", "open", "./termhelper", NULL);
#else
execlp(term, term, "-title", "BlastEm Debugger", "-e", "./termhelper", NULL);
#endif
} else {
//connect to the FIFOs, these will block so order is important
open(INPUT_PATH, O_RDONLY);
open(OUTPUT_PATH, O_WRONLY);
atexit(cleanup_terminal);
if (-1 == dup(STDOUT_FILENO)) {
fatal_error("failed to dup STDOUT to STDERR after terminal fork");
}
}
}
init_done = 1;
}
}
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