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https://github.com/jart/cosmopolitan.git
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b107d2709f
redbean improvements:
- Explicitly disable corking
- Simulate Python regex API for Lua
- Send warmup requests in main process on startup
- Add Class-A granular IPv4 network classification
- Add /statusz page so you can monitor your redbean's health
- Fix regressions on OpenBSD/NetBSD caused by recent changes
- Plug Authorization header into Lua GetUser and GetPass APIs
- Recognize X-Forwarded-{For,Host} from local reverse proxies
- Add many additional functions to redbean Lua server page API
- Report resource usage of child processes on `/` listing page
- Introduce `-a` flag for logging child process resource usage
- Introduce `-t MILLIS` flag and `ProgramTimeout(ms)` init API
- Introduce `-H "Header: value"` flag and `ProgramHeader(k,v)` API
Cosmopolitan Libc improvements:
- Make strerror() simpler
- Make inet_pton() not depend on sscanf()
- Fix OpenExecutable() which broke .data section earlier
- Fix stdio in cases where it overflows kernel tty buffer
- Fix bugs in crash reporting w/o .com.dbg binary present
- Add polyfills for SO_LINGER, SO_RCVTIMEO, and SO_SNDTIMEO
- Polyfill TCP_CORK on BSD and XNU using TCP_NOPUSH magnums
New netcat clone in examples/nc.c:
While testing some of the failure conditions for redbean, I noticed that
BusyBox's `nc` command is pretty busted, if you use it as an interactive
tool, rather than having it be part of a pipeline. Unfortunately this'll
only work on UNIX since Windows doesn't let us poll on stdio and sockets
at the same time because I don't think they want tools like this running
on their platform. So if you want forbidden fruit, it's here so enjoy it
68 lines
3.3 KiB
C
68 lines
3.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 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/internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/nt/winsock.h"
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#include "libc/sock/internal.h"
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#include "libc/sock/sock.h"
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#include "libc/sysv/consts/so.h"
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#include "libc/sysv/errfuns.h"
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static bool setsockopt_polyfill(int *optname) {
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if (errno == ENOPROTOOPT && *optname == SO_REUSEPORT /* RHEL5 */) {
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*optname = SO_REUSEADDR; /* close enough */
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return true; /* fudges errno */
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}
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return false;
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}
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/**
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* Modifies socket settings.
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*
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* This function is the ultimate rabbit hole. Basic usage:
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*
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* int yes = 1;
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* setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &yes, sizeof(yes));
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*
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* @param level can be SOL_SOCKET, SOL_IP, SOL_TCP, etc.
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* @param optname can be SO_{REUSE{PORT,ADDR},KEEPALIVE,etc.} etc.
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* @return 0 on success, or -1 w/ errno
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* @error ENOPROTOOPT for unknown (level,optname)
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* @see libc/sysv/consts.sh for tuning catalogue
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* @see getsockopt()
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*/
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int setsockopt(int fd, int level, int optname, const void *optval,
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uint32_t optlen) {
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if (!optval) return efault();
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if (!level || !optname) return enoprotoopt(); /* our sysvconsts definition */
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if (optname == -1) return 0; /* our sysvconsts definition */
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if (!IsWindows()) {
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do {
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if (sys_setsockopt(fd, level, optname, optval, optlen) != -1) {
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return 0;
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}
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} while (setsockopt_polyfill(&optname));
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return -1;
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} else if (__isfdkind(fd, kFdSocket)) {
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return sys_setsockopt_nt(&g_fds.p[fd], level, optname, optval, optlen);
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} else {
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return ebadf();
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}
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}
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