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262 lines
6.3 KiB
262 lines
6.3 KiB
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "private-lib-core.h"
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int
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lws_send_pipe_choked(struct lws *wsi)
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{
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struct lws *wsi_eff = wsi;
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fd_set writefds;
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struct timeval tv = { 0, 0 };
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int n;
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#if defined(LWS_WITH_HTTP2)
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wsi_eff = lws_get_network_wsi(wsi);
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#endif
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/* the fact we checked implies we avoided back-to-back writes */
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wsi_eff->could_have_pending = 0;
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/* treat the fact we got a truncated send pending as if we're choked */
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if (lws_has_buffered_out(wsi)
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#if defined(LWS_WITH_HTTP_STREAM_COMPRESSION)
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|| wsi->http.comp_ctx.buflist_comp ||
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wsi->http.comp_ctx.may_have_more
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#endif
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)
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return 1;
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FD_ZERO(&writefds);
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FD_SET(wsi_eff->desc.sockfd, &writefds);
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n = select(wsi_eff->desc.sockfd + 1, NULL, &writefds, NULL, &tv);
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if (n < 0)
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return 1; /* choked */
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return !n; /* n = 0 = not writable = choked */
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}
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int
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lws_poll_listen_fd(struct lws_pollfd *fd)
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{
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fd_set readfds;
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struct timeval tv = { 0, 0 };
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FD_ZERO(&readfds);
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FD_SET(fd->fd, &readfds);
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return select(fd->fd + 1, &readfds, NULL, NULL, &tv);
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}
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int
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lws_plat_set_nonblocking(lws_sockfd_type fd)
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{
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return fcntl(fd, F_SETFL, O_NONBLOCK) < 0;
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}
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int
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lws_plat_set_socket_options(struct lws_vhost *vhost, int fd, int unix_skt)
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{
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int optval = 1;
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socklen_t optlen = sizeof(optval);
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#if defined(__APPLE__) || \
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defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
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defined(__NetBSD__) || \
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defined(__OpenBSD__)
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struct protoent *tcp_proto;
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#endif
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if (vhost->ka_time) {
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/* enable keepalive on this socket */
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optval = 1;
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if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE,
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(const void *)&optval, optlen) < 0)
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return 1;
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#if defined(__APPLE__) || \
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defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
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defined(__NetBSD__) || \
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defined(__CYGWIN__) || defined(__OpenBSD__) || defined (__sun)
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/*
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* didn't find a way to set these per-socket, need to
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* tune kernel systemwide values
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*/
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#else
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/* set the keepalive conditions we want on it too */
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optval = vhost->ka_time;
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if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE,
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(const void *)&optval, optlen) < 0)
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return 1;
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optval = vhost->ka_interval;
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if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL,
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(const void *)&optval, optlen) < 0)
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return 1;
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optval = vhost->ka_probes;
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if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT,
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(const void *)&optval, optlen) < 0)
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return 1;
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#endif
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}
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/* Disable Nagle */
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optval = 1;
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if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &optval, optlen) < 0)
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return 1;
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return lws_plat_set_nonblocking(fd);
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}
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/* cast a struct sockaddr_in6 * into addr for ipv6 */
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int
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lws_interface_to_sa(int ipv6, const char *ifname, struct sockaddr_in *addr,
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size_t addrlen)
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{
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#if 0
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int rc = LWS_ITOSA_NOT_EXIST;
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struct ifaddrs *ifr;
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struct ifaddrs *ifc;
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#ifdef LWS_WITH_IPV6
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struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr;
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#endif
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getifaddrs(&ifr);
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for (ifc = ifr; ifc != NULL && rc; ifc = ifc->ifa_next) {
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if (!ifc->ifa_addr)
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continue;
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lwsl_info(" interface %s vs %s\n", ifc->ifa_name, ifname);
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if (strcmp(ifc->ifa_name, ifname))
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continue;
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switch (ifc->ifa_addr->sa_family) {
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case AF_INET:
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#ifdef LWS_WITH_IPV6
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if (ipv6) {
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/* map IPv4 to IPv6 */
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memset((char *)&addr6->sin6_addr, 0,
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sizeof(struct in6_addr));
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addr6->sin6_addr.s6_addr[10] = 0xff;
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addr6->sin6_addr.s6_addr[11] = 0xff;
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memcpy(&addr6->sin6_addr.s6_addr[12],
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&((struct sockaddr_in *)ifc->ifa_addr)->sin_addr,
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sizeof(struct in_addr));
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} else
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#endif
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memcpy(addr,
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(struct sockaddr_in *)ifc->ifa_addr,
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sizeof(struct sockaddr_in));
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break;
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#ifdef LWS_WITH_IPV6
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case AF_INET6:
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memcpy(&addr6->sin6_addr,
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&((struct sockaddr_in6 *)ifc->ifa_addr)->sin6_addr,
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sizeof(struct in6_addr));
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break;
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#endif
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default:
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continue;
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}
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rc = LWS_ITOSA_USABLE;
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}
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freeifaddrs(ifr);
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if (rc == LWS_ITOSA_NOT_EXIST) {
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/* check if bind to IP address */
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#ifdef LWS_WITH_IPV6
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if (inet_pton(AF_INET6, ifname, &addr6->sin6_addr) == 1)
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rc = LWS_ITOSA_USABLE;
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else
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#endif
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if (inet_pton(AF_INET, ifname, &addr->sin_addr) == 1)
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rc = LWS_ITOSA_USABLE;
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}
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return rc;
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#endif
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return LWS_ITOSA_NOT_EXIST;
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}
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const char *
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lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt)
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{
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return inet_ntop(af, src, dst, cnt);
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}
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int
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lws_plat_inet_pton(int af, const char *src, void *dst)
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{
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return 1; // inet_pton(af, src, dst);
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}
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int
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lws_plat_ifname_to_hwaddr(int fd, const char *ifname, uint8_t *hwaddr, int len)
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{
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lwsl_err("%s: UNIMPLEMENTED on this platform\n", __func__);
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return -1;
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}
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int
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lws_plat_rawudp_broadcast(uint8_t *p, const uint8_t *canned, int canned_len,
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int n, int fd, const char *iface)
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{
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lwsl_err("%s: UNIMPLEMENTED on this platform\n", __func__);
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return -1;
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}
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int
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lws_plat_if_up(const char *ifname, int fd, int up)
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{
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lwsl_err("%s: UNIMPLEMENTED on this platform\n", __func__);
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return -1;
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}
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int
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lws_plat_BINDTODEVICE(lws_sockfd_type fd, const char *ifname)
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{
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lwsl_err("%s: UNIMPLEMENTED on this platform\n", __func__);
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return -1;
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}
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int
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lws_plat_ifconfig_ip(const char *ifname, int fd, uint8_t *ip, uint8_t *mask_ip,
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uint8_t *gateway_ip)
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{
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lwsl_err("%s: UNIMPLEMENTED on this platform\n", __func__);
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return -1;
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}
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