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/* Copyright (C) 2017  C. McEnroe <june@causal.agency>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <err.h>
#include <poll.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sysexits.h>
#include <termios.h>
#include <unistd.h>

#if June McEnroe
6 years
1.2pounce-1.2.tar.gz  pounce-1.2.zip  June McEnroe7 years
1.1pounce-1.1.tar.gz  pounce-1.1.zip  June McEnroe7 years
1.0p3pounce-1.0p3.tar.gz  pounce-1.0p3.zip  June McEnroe7 years
1.0p2pounce-1.0p2.tar.gz  pounce-1.0p2.zip  June McEnroe7 years
1.0p1pounce-1.0p1.tar.gz  pounce-1.0p1.zip  June McEnroe7 years
1.0pounce-1.0.tar.gz  pounce-1.0.zip  June McEnroe7 years
generated by cgit-pink 1.4.1 (git 2.36.1) at 2026-09-25 06:11:49 +0000
ss="Id">argv[1], *to = argv[2]; *from; ++from, ++to) { table[(byte)*from] = *to; } error = tcgetattr(STDERR_FILENO, &saveTerm); if (error) err(EX_IOERR, "tcgetattr"); atexit(restoreTerm); struct termios raw = saveTerm; cfmakeraw(&raw); error = tcsetattr(STDERR_FILENO, TCSADRAIN, &raw); if (error) err(EX_IOERR, "tcsetattr"); struct winsize window; error = ioctl(STDERR_FILENO, TIOCGWINSZ, &window); if (error) err(EX_IOERR, "TIOCGWINSZ"); int pty; pid_t pid = forkpty(&pty, NULL, NULL, &window); if (pid < 0) err(EX_OSERR, "forkpty"); if (!pid) { execvp(argv[3], &argv[3]); err(EX_NOINPUT, "%s", argv[3]); } bool enable = true; byte buf[4096]; struct pollfd fds[2] = { { .fd = STDIN_FILENO, .events = POLLIN }, { .fd = pty, .events = POLLIN }, }; while (0 < poll(fds, 2, -1)) { if (fds[0].revents & POLLIN) { ssize_t readSize = read(STDIN_FILENO, buf, sizeof(buf)); if (readSize < 0) err(EX_IOERR, "read(%d)", STDIN_FILENO); if (readSize == 1) { if (buf[0] == CTRL('S')) { enable ^= true; continue; } byte c = buf[0]; if (enable && table[c]) buf[0] = table[c]; } ssize_t writeSize = write(pty, buf, readSize); if (writeSize < 0) err(EX_IOERR, "write(%d)", pty); if (writeSize < readSize) errx(EX_IOERR, "short write(%d)", pty); } if (fds[1].revents & POLLIN) { ssize_t readSize = read(pty, buf, sizeof(buf)); if (readSize < 0) err(EX_IOERR, "read(%d)", pty); ssize_t writeSize = write(STDOUT_FILENO, buf, readSize); if (writeSize < 0) err(EX_IOERR, "write(%d)", STDOUT_FILENO); if (writeSize < readSize) { errx(EX_IOERR, "short write(%d)", STDOUT_FILENO); } } int status; pid_t dead = waitpid(pid, &status, WNOHANG); if (dead < 0) err(EX_OSERR, "waitpid(%d)", pid); if (dead) return WIFEXITED(status) ? WEXITSTATUS(status) : EX_SOFTWARE; } err(EX_IOERR, "poll"); }
generated by cgit-pink 1.4.1 (git 2.36.1) at 2026-09-25 06:11:49 +0000