mirror of
https://github.com/jart/cosmopolitan.git
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ad3944a3b6
It's now possible to use redbean Fetch() with arbitrary HTTP methods, e.g. LIST which is used by Hashicorp. There's an eight char limit and uppercase canonicalization still happens. This change also includes a better function for launching a browser tab, that won't deadlock on a headless workstation running Debian. Closes #1107
121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2024 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/struct/sigset.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/log/log.h"
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#include "libc/proc/posix_spawn.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sig.h"
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static volatile bool g_timed_out;
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static void finish(void) {
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if (!IsWindows()) {
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_exit(0);
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}
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}
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static void timeout(int sig) {
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g_timed_out = true;
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}
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static void failure(const char *url, const char *cmd, const char *reason) {
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WARNF("(srvr) failed to open %s in a browser tab using %s: %s", url, cmd,
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reason);
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}
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/**
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* Opens browser tab on host system.
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*/
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void launch_browser(const char *url) {
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// perform this task from a subprocess so it doesn't block server
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if (!IsWindows()) {
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switch (fork()) {
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case 0:
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break;
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default:
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return;
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case -1:
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perror("fork");
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return;
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}
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}
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// determine which command opens browser tab
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const char *cmd;
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if (IsWindows()) {
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cmd = "/c/windows/explorer.exe";
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} else if (IsXnu()) {
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cmd = "open";
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} else {
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cmd = "xdg-open";
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}
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// spawn process
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// set process group so ctrl-c won't kill browser
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int pid, err;
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posix_spawnattr_t sa;
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char *args[] = {(char *)cmd, (char *)url, 0};
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posix_spawnattr_init(&sa);
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posix_spawnattr_setflags(&sa, POSIX_SPAWN_SETPGROUP);
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err = posix_spawnp(&pid, cmd, 0, &sa, args, environ);
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posix_spawnattr_destroy(&sa);
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if (err) {
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failure(url, cmd, strerror(err));
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return finish();
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}
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// kill command if it takes more than three seconds
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// we need it because xdg-open acts weird on headless systems
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struct sigaction hand;
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hand.sa_flags = 0;
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sigemptyset(&hand.sa_mask);
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hand.sa_handler = timeout;
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sigaction(SIGALRM, &hand, 0);
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alarm(3);
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// wait for tab to return finish opening
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// the browser will still be running after this completes
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int ws;
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while (waitpid(pid, &ws, 0) == -1) {
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if (errno != EINTR) {
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failure(url, cmd, strerror(errno));
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kill(pid, SIGKILL);
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return finish();
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}
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if (g_timed_out) {
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failure(url, cmd, "process timed out");
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kill(pid, SIGKILL);
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return finish();
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}
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}
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if (ws) {
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failure(url, cmd, "process exited with non-zero status");
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}
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// we're done
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return finish();
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}
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