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libwebsockets/lib/plat/unix/private-lib-plat-unix.h
Andy Green c9731c5f17 type comparisons: fixes 
This is a huge patch that should be a global NOP.

For unix type platforms it enables -Wconversion to issue warnings (-> error)
for all automatic casts that seem less than ideal but are normally concealed
by the toolchain.

This is things like passing an int to a size_t argument.  Once enabled, I
went through all args on my default build (which build most things) and
tried to make the removed default cast explicit.

With that approach it neither change nor bloat the code, since it compiles
to whatever it was doing before, just with the casts made explicit... in a
few cases I changed some length args from int to size_t but largely left
the causes alone.

From now on, new code that is relying on less than ideal casting
will complain and nudge me to improve it by warnings.
2021-01-05 10:56:38 +00:00

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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Included from lib/private-lib-core.h if no explicit platform
*/
#include <fcntl.h>
#include <strings.h>
#include <unistd.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <poll.h>
#include <netdb.h>
#ifndef __cplusplus
#include <errno.h>
#endif
#include <netdb.h>
#include <signal.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/un.h>
#if defined(LWS_HAVE_EVENTFD)
#include <sys/eventfd.h>
#endif
#if defined(__APPLE__)
#include <machine/endian.h>
#endif
#if defined(__FreeBSD__)
#include <sys/endian.h>
#endif
#if defined(__linux__)
#include <endian.h>
#include <linux/if_packet.h>
#include <net/if.h>
#endif
#if defined(__QNX__)
#include <gulliver.h>
#if defined(__LITTLEENDIAN__)
#define BYTE_ORDER __LITTLEENDIAN__
#define LITTLE_ENDIAN __LITTLEENDIAN__
#define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
#endif
#if defined(__BIGENDIAN__)
#define BYTE_ORDER __BIGENDIAN__
#define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
#define BIG_ENDIAN __BIGENDIAN__
#endif
#endif
#if defined(LWS_HAVE_PTHREAD_H)
#include <pthread.h>
typedef pthread_mutex_t lws_mutex_t;
#define lws_mutex_init(x) pthread_mutex_init(&(x), NULL)
#define lws_mutex_destroy(x) pthread_mutex_destroy(&(x))
#define lws_mutex_lock(x) pthread_mutex_lock(&(x))
#define lws_mutex_unlock(x) pthread_mutex_unlock(&(x))
#endif
#if defined(__sun) && defined(__GNUC__)
#include <arpa/nameser_compat.h>
#if !defined (BYTE_ORDER)
#define BYTE_ORDER __BYTE_ORDER__
#endif
#if !defined(LITTLE_ENDIAN)
#define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
#endif
#if !defined(BIG_ENDIAN)
#define BIG_ENDIAN __ORDER_BIG_ENDIAN__
#endif
#endif /* sun + GNUC */
#if !defined(BYTE_ORDER)
#define BYTE_ORDER __BYTE_ORDER
#endif
#if !defined(LITTLE_ENDIAN)
#define LITTLE_ENDIAN __LITTLE_ENDIAN
#endif
#if !defined(BIG_ENDIAN)
#define BIG_ENDIAN __BIG_ENDIAN
#endif
#if defined(LWS_BUILTIN_GETIFADDRS)
#include "./misc/getifaddrs.h"
#else
#if defined(__HAIKU__)
#define _BSD_SOURCE
#endif
#include <ifaddrs.h>
#endif
#if defined (__sun) || defined(__HAIKU__) || defined(__QNX__) || defined(__ANDROID__)
#include <syslog.h>
#if defined(__ANDROID__)
#include <sys/resource.h>
#endif
#else
#include <sys/syslog.h>
#endif
#ifdef __QNX__
# include "netinet/tcp_var.h"
# define TCP_KEEPINTVL TCPCTL_KEEPINTVL
# define TCP_KEEPIDLE TCPCTL_KEEPIDLE
# define TCP_KEEPCNT TCPCTL_KEEPCNT
#endif
#define LWS_ERRNO errno
#define LWS_EAGAIN EAGAIN
#define LWS_EALREADY EALREADY
#define LWS_EINPROGRESS EINPROGRESS
#define LWS_EINTR EINTR
#define LWS_EISCONN EISCONN
#define LWS_ENOTCONN ENOTCONN
#define LWS_EWOULDBLOCK EWOULDBLOCK
#define LWS_EADDRINUSE EADDRINUSE
#define lws_set_blocking_send(wsi)
#define LWS_SOCK_INVALID (-1)
struct lws_context;
struct lws *
wsi_from_fd(const struct lws_context *context, int fd);
int
insert_wsi(const struct lws_context *context, struct lws *wsi);
int
lws_plat_ifconfig_ip(const char *ifname, int fd, uint8_t *ip, uint8_t *mask_ip,
uint8_t *gateway_ip);
void
delete_from_fd(const struct lws_context *context, int fd);
#ifndef LWS_NO_FORK
#ifdef LWS_HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#endif
#define compatible_close(x) close(x)
#define compatible_file_close(fd) close(fd)
#define lws_plat_socket_offset() (0)
/*
* Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
* but happily have something equivalent in the SO_NOSIGPIPE flag.
*/
#ifdef __APPLE__
/* iOS SDK 12+ seems to define it, undef it for compatibility both ways */
#undef MSG_NOSIGNAL
#define MSG_NOSIGNAL SO_NOSIGPIPE
#endif
/*
* Solaris 11.X only supports POSIX 2001, MSG_NOSIGNAL appears in
* POSIX 2008.
*/
#if defined(__sun) && !defined(MSG_NOSIGNAL)
#define MSG_NOSIGNAL 0
#endif
int
lws_plat_rawudp_broadcast(uint8_t *p, const uint8_t *canned, size_t canned_len,
size_t n, int fd, const char *iface);
int
lws_plat_if_up(const char *ifname, int fd, int up);
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