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cosmopolitan/libc/sock/internal.h
Justine Tunney b107d2709f Add /statusz page to redbean plus other enhancements 
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
2021-04-23 18:53:57 -07:00

169 lines
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C
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#ifndef COSMOPOLITAN_LIBC_SOCK_INTERNAL_H_
#define COSMOPOLITAN_LIBC_SOCK_INTERNAL_H_
#include "libc/bits/bits.h"
#include "libc/calls/internal.h"
#include "libc/nt/thunk/msabi.h"
#include "libc/nt/winsock.h"
#include "libc/sock/select.h"
#include "libc/sock/sock.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define FD_READ (1 << FD_READ_BIT)
#define FD_READ_BIT 0
#define FD_WRITE (1 << FD_WRITE_BIT)
#define FD_WRITE_BIT 1
#define FD_OOB (1 << FD_OOB_BIT)
#define FD_OOB_BIT 2
#define FD_ACCEPT (1 << FD_ACCEPT_BIT)
#define FD_ACCEPT_BIT 3
#define FD_CONNECT (1 << FD_CONNECT_BIT)
#define FD_CONNECT_BIT 4
#define FD_CLOSE (1 << FD_CLOSE_BIT)
#define FD_CLOSE_BIT 5
struct sockaddr_bsd {
uint8_t sa_len; /* « different type */
uint8_t sa_family; /* « different type */
char sa_data[14];
};
struct sockaddr_in_bsd {
uint8_t sin_len; /* « different type */
uint8_t sin_family; /* « different type */
uint16_t sin_port;
struct in_addr sin_addr;
uint8_t sin_zero[8];
};
struct msghdr_bsd {
void *msg_name;
uint32_t msg_namelen;
struct iovec *msg_iov;
uint32_t msg_iovlen; /* « different type */
void *msg_control;
uint64_t msg_controllen;
uint32_t msg_flags; /* « different type */
};
struct sockaddr_un_bsd {
uint8_t sun_len; /* sockaddr len including NUL on freebsd but excluding it on
openbsd/xnu */
uint8_t sun_family;
char sun_path[108];
};
struct SockFd {
int family;
int type;
int protocol;
int64_t event;
bool32 (*AcceptEx)(int64_t sListenSocket, int64_t sAcceptSocket,
void *out_lpOutputBuffer /*[recvlen+local+remoteaddrlen]*/,
uint32_t dwReceiveDataLength,
uint32_t dwLocalAddressLength,
uint32_t dwRemoteAddressLength,
uint32_t *out_lpdwBytesReceived,
struct NtOverlapped *inout_lpOverlapped) __msabi;
};
hidden extern int64_t __iocp;
errno_t __dos2errno(uint32_t);
int32_t __sys_accept(int32_t, void *, uint32_t *, int) nodiscard hidden;
int32_t __sys_accept4(int32_t, void *, uint32_t *, int) nodiscard hidden;
int32_t __sys_connect(int32_t, const void *, uint32_t) hidden;
int32_t __sys_socket(int32_t, int32_t, int32_t) hidden;
int32_t __sys_getsockname(int32_t, void *, uint32_t *) hidden;
int32_t __sys_getpeername(int32_t, void *, uint32_t *) hidden;
int32_t __sys_socketpair(int32_t, int32_t, int32_t, int32_t[2]) hidden;
int32_t sys_accept4(int32_t, void *, uint32_t *, int) nodiscard hidden;
int32_t sys_accept(int32_t, void *, uint32_t *) hidden;
int32_t sys_bind(int32_t, const void *, uint32_t) hidden;
int32_t sys_connect(int32_t, const void *, uint32_t) hidden;
int32_t sys_getsockopt(int32_t, int32_t, int32_t, void *, uint32_t *) hidden;
int32_t sys_listen(int32_t, int32_t) hidden;
int32_t sys_getsockname(int32_t, void *, uint32_t *) hidden;
int32_t sys_getpeername(int32_t, void *, uint32_t *) hidden;
int32_t sys_poll(struct pollfd *, uint64_t, signed) hidden;
int32_t sys_shutdown(int32_t, int32_t) hidden;
int32_t sys_socket(int32_t, int32_t, int32_t) hidden;
int32_t sys_socketpair(int32_t, int32_t, int32_t, int32_t[2]) hidden;
int64_t sys_readv(int32_t, const struct iovec *, int32_t) hidden;
int64_t sys_writev(int32_t, const struct iovec *, int32_t) hidden;
ssize_t sys_recvfrom(int, void *, size_t, int, void *, uint32_t *) hidden;
ssize_t sys_sendto(int, const void *, size_t, int, const void *,
uint32_t) hidden;
ssize_t sys_sendmsg(int, const struct msghdr *, int) hidden;
ssize_t sys_recvmsg(int, struct msghdr *, int) hidden;
int32_t sys_select(int32_t, fd_set *, fd_set *, fd_set *,
struct timeval *) hidden;
int sys_setsockopt(int, int, int, const void *, uint32_t) hidden;
int32_t sys_epoll_create(int32_t) hidden;
int32_t sys_epoll_ctl(int32_t, int32_t, int32_t, void *) hidden;
int32_t sys_epoll_wait(int32_t, void *, int32_t, int32_t) hidden;
int sys_poll_nt(struct pollfd *, uint64_t, uint64_t) hidden;
int sys_getsockopt_nt(struct Fd *, int, int, void *, uint32_t *) hidden;
int sys_getsockname_nt(struct Fd *, void *, uint32_t *) hidden;
int sys_getpeername_nt(struct Fd *, void *, uint32_t *) hidden;
int sys_listen_nt(struct Fd *, int) hidden;
int sys_connect_nt(struct Fd *, const void *, uint32_t) hidden;
int sys_bind_nt(struct Fd *, const void *, uint32_t);
int sys_accept_nt(struct Fd *, void *, uint32_t *, int) hidden;
int sys_closesocket_nt(struct Fd *) hidden;
int sys_socket_nt(int, int, int) hidden;
/*
int sys_socketpair_nt_stream(int, int, int, int[2]) hidden;
int sys_socketpair_nt_dgram(int, int, int, int[2]) hidden;
*/
int sys_socketpair_nt(int, int, int, int[2]) hidden;
int sys_select_nt(int, fd_set *, fd_set *, fd_set *, struct timeval *) hidden;
int sys_shutdown_nt(struct Fd *, int) hidden;
int sys_setsockopt_nt(struct Fd *, int, int, const void *, uint32_t) hidden;
size_t __iovec2nt(struct NtIovec[hasatleast 16], const struct iovec *,
size_t) hidden;
ssize_t sys_sendto_nt(struct Fd *, const struct iovec *, size_t, uint32_t,
void *, uint32_t) hidden;
ssize_t sys_recvfrom_nt(struct Fd *, const struct iovec *, size_t, uint32_t,
void *, uint32_t *) hidden;
void WinSockInit(void) hidden;
int64_t __winsockerr(void) nocallback hidden;
int __fixupnewsockfd(int, int) hidden;
int64_t __winsockblock(int64_t, unsigned, int64_t) hidden;
int sys_close_epoll(int) hidden;
/**
* Converts sockaddr (Linux/Windows) → sockaddr_bsd (XNU/BSD).
*/
forceinline void sockaddr2bsd(void *saddr) {
uint8_t *p;
uint16_t fam;
if (saddr) {
p = saddr;
fam = READ16LE(p);
p[0] = sizeof(struct sockaddr_in_bsd);
p[1] = fam;
}
}
/**
* Converts sockaddr_in_bsd (XNU/BSD) → sockaddr (Linux/Windows).
*/
forceinline void sockaddr2linux(void *saddr) {
uint8_t *p, fam;
if (saddr) {
p = saddr;
fam = p[1];
WRITE16LE(p, fam);
}
}
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_SOCK_INTERNAL_H_ */
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