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authorRĂ©mi Verschelde <rverschelde@gmail.com>2019-05-02 08:15:23 +0200
committerGitHub <noreply@github.com>2019-05-02 08:15:23 +0200
commitb7cd9794fe5b38b6a60c9ce64ca9bf1bab1d7813 (patch)
tree3b0f365ad3ea1cebd50985293cd49617153b5ac6 /thirdparty/libwebsockets/plat/lws-plat-unix.c
parentc2c56ee3975ec9744088d5328462818a5980a5a0 (diff)
parentbe414e4476371567a824099767b6c91a0123d626 (diff)
Merge pull request #28568 from Faless/net/lws_rollback_3.0.1_pr
Roll back libwebsockets to version 3.0.1
Diffstat (limited to 'thirdparty/libwebsockets/plat/lws-plat-unix.c')
-rw-r--r--thirdparty/libwebsockets/plat/lws-plat-unix.c982
1 files changed, 982 insertions, 0 deletions
diff --git a/thirdparty/libwebsockets/plat/lws-plat-unix.c b/thirdparty/libwebsockets/plat/lws-plat-unix.c
new file mode 100644
index 0000000000..d1bca8b5df
--- /dev/null
+++ b/thirdparty/libwebsockets/plat/lws-plat-unix.c
@@ -0,0 +1,982 @@
+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2010-2017 Andy Green <andy@warmcat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation:
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#define _GNU_SOURCE
+#include "core/private.h"
+
+#include <pwd.h>
+#include <grp.h>
+
+#ifdef LWS_WITH_PLUGINS
+#include <dlfcn.h>
+#endif
+#include <dirent.h>
+
+void lws_plat_apply_FD_CLOEXEC(int n)
+{
+ if (n != -1)
+ fcntl(n, F_SETFD, FD_CLOEXEC );
+}
+
+int
+lws_plat_socket_offset(void)
+{
+ return 0;
+}
+
+int
+lws_plat_pipe_create(struct lws *wsi)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+
+#if defined(LWS_HAVE_PIPE2)
+ return pipe2(pt->dummy_pipe_fds, O_NONBLOCK);
+#else
+ return pipe(pt->dummy_pipe_fds);
+#endif
+}
+
+int
+lws_plat_pipe_signal(struct lws *wsi)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ char buf = 0;
+ int n;
+
+ n = write(pt->dummy_pipe_fds[1], &buf, 1);
+
+ return n != 1;
+}
+
+void
+lws_plat_pipe_close(struct lws *wsi)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+
+ if (pt->dummy_pipe_fds[0] && pt->dummy_pipe_fds[0] != -1)
+ close(pt->dummy_pipe_fds[0]);
+ if (pt->dummy_pipe_fds[1] && pt->dummy_pipe_fds[1] != -1)
+ close(pt->dummy_pipe_fds[1]);
+
+ pt->dummy_pipe_fds[0] = pt->dummy_pipe_fds[1] = -1;
+}
+
+#ifdef __QNX__
+# include "netinet/tcp_var.h"
+# define TCP_KEEPINTVL TCPCTL_KEEPINTVL
+# define TCP_KEEPIDLE TCPCTL_KEEPIDLE
+# define TCP_KEEPCNT TCPCTL_KEEPCNT
+#endif
+
+unsigned long long time_in_microseconds(void)
+{
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+ return ((unsigned long long)tv.tv_sec * 1000000LL) + tv.tv_usec;
+}
+
+LWS_VISIBLE int
+lws_get_random(struct lws_context *context, void *buf, int len)
+{
+ return read(context->fd_random, (char *)buf, len);
+}
+
+LWS_VISIBLE int
+lws_send_pipe_choked(struct lws *wsi)
+{
+ struct lws_pollfd fds;
+ struct lws *wsi_eff = wsi;
+
+#if defined(LWS_WITH_HTTP2)
+ wsi_eff = lws_get_network_wsi(wsi);
+#endif
+
+ /* the fact we checked implies we avoided back-to-back writes */
+ wsi_eff->could_have_pending = 0;
+
+ /* treat the fact we got a truncated send pending as if we're choked */
+ if (wsi_eff->trunc_len)
+ return 1;
+
+ fds.fd = wsi_eff->desc.sockfd;
+ fds.events = POLLOUT;
+ fds.revents = 0;
+
+ if (poll(&fds, 1, 0) != 1)
+ return 1;
+
+ if ((fds.revents & POLLOUT) == 0)
+ return 1;
+
+ /* okay to send another packet without blocking */
+
+ return 0;
+}
+
+LWS_VISIBLE int
+lws_poll_listen_fd(struct lws_pollfd *fd)
+{
+ return poll(fd, 1, 0);
+}
+
+LWS_VISIBLE void lwsl_emit_syslog(int level, const char *line)
+{
+ int syslog_level = LOG_DEBUG;
+
+ switch (level) {
+ case LLL_ERR:
+ syslog_level = LOG_ERR;
+ break;
+ case LLL_WARN:
+ syslog_level = LOG_WARNING;
+ break;
+ case LLL_NOTICE:
+ syslog_level = LOG_NOTICE;
+ break;
+ case LLL_INFO:
+ syslog_level = LOG_INFO;
+ break;
+ }
+ syslog(syslog_level, "%s", line);
+}
+
+LWS_VISIBLE LWS_EXTERN int
+_lws_plat_service_tsi(struct lws_context *context, int timeout_ms, int tsi)
+{
+ volatile struct lws_foreign_thread_pollfd *ftp, *next;
+ volatile struct lws_context_per_thread *vpt;
+ struct lws_context_per_thread *pt;
+ int n = -1, m, c;
+
+ /* stay dead once we are dead */
+
+ if (!context || !context->vhost_list)
+ return 1;
+
+ pt = &context->pt[tsi];
+ vpt = (volatile struct lws_context_per_thread *)pt;
+
+ lws_stats_atomic_bump(context, pt, LWSSTATS_C_SERVICE_ENTRY, 1);
+
+ if (timeout_ms < 0)
+ goto faked_service;
+
+ if (context->event_loop_ops->run_pt)
+ context->event_loop_ops->run_pt(context, tsi);
+
+ if (!context->service_tid_detected) {
+ struct lws _lws;
+
+ memset(&_lws, 0, sizeof(_lws));
+ _lws.context = context;
+
+ context->service_tid_detected =
+ context->vhost_list->protocols[0].callback(
+ &_lws, LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0);
+ context->service_tid = context->service_tid_detected;
+ context->service_tid_detected = 1;
+ }
+
+ /*
+ * is there anybody with pending stuff that needs service forcing?
+ */
+ if (!lws_service_adjust_timeout(context, 1, tsi)) {
+ /* -1 timeout means just do forced service */
+ _lws_plat_service_tsi(context, -1, pt->tid);
+ /* still somebody left who wants forced service? */
+ if (!lws_service_adjust_timeout(context, 1, pt->tid))
+ /* yes... come back again quickly */
+ timeout_ms = 0;
+ }
+
+ if (timeout_ms) {
+ lws_pt_lock(pt, __func__);
+ /* don't stay in poll wait longer than next hr timeout */
+ lws_usec_t t = __lws_hrtimer_service(pt);
+ if ((lws_usec_t)timeout_ms * 1000 > t)
+ timeout_ms = t / 1000;
+ lws_pt_unlock(pt);
+ }
+
+ vpt->inside_poll = 1;
+ lws_memory_barrier();
+ n = poll(pt->fds, pt->fds_count, timeout_ms);
+ vpt->inside_poll = 0;
+ lws_memory_barrier();
+
+ /* Collision will be rare and brief. Just spin until it completes */
+ while (vpt->foreign_spinlock)
+ ;
+
+ /*
+ * At this point we are not inside a foreign thread pollfd change,
+ * and we have marked ourselves as outside the poll() wait. So we
+ * are the only guys that can modify the lws_foreign_thread_pollfd
+ * list on the pt. Drain the list and apply the changes to the
+ * affected pollfds in the correct order.
+ */
+
+ lws_pt_lock(pt, __func__);
+
+ ftp = vpt->foreign_pfd_list;
+ //lwsl_notice("cleared list %p\n", ftp);
+ while (ftp) {
+ struct lws *wsi;
+ struct lws_pollfd *pfd;
+
+ next = ftp->next;
+ pfd = &vpt->fds[ftp->fd_index];
+ if (lws_socket_is_valid(pfd->fd)) {
+ wsi = wsi_from_fd(context, pfd->fd);
+ if (wsi)
+ __lws_change_pollfd(wsi, ftp->_and, ftp->_or);
+ }
+ lws_free((void *)ftp);
+ ftp = next;
+ }
+ vpt->foreign_pfd_list = NULL;
+ lws_memory_barrier();
+
+ /* we have come out of a poll wait... check the hrtimer list */
+
+ __lws_hrtimer_service(pt);
+
+ lws_pt_unlock(pt);
+
+ m = 0;
+#if defined(LWS_ROLE_WS) && !defined(LWS_WITHOUT_EXTENSIONS)
+ m |= !!pt->ws.rx_draining_ext_list;
+#endif
+
+ if (pt->context->tls_ops &&
+ pt->context->tls_ops->fake_POLLIN_for_buffered)
+ m |= pt->context->tls_ops->fake_POLLIN_for_buffered(pt);
+
+ if (!m && !n) { /* nothing to do */
+ lws_service_fd_tsi(context, NULL, tsi);
+ lws_service_do_ripe_rxflow(pt);
+
+ return 0;
+ }
+
+faked_service:
+ m = lws_service_flag_pending(context, tsi);
+ if (m)
+ c = -1; /* unknown limit */
+ else
+ if (n < 0) {
+ if (LWS_ERRNO != LWS_EINTR)
+ return -1;
+ return 0;
+ } else
+ c = n;
+
+ /* any socket with events to service? */
+ for (n = 0; n < (int)pt->fds_count && c; n++) {
+ if (!pt->fds[n].revents)
+ continue;
+
+ c--;
+
+ m = lws_service_fd_tsi(context, &pt->fds[n], tsi);
+ if (m < 0)
+ return -1;
+ /* if something closed, retry this slot */
+ if (m)
+ n--;
+ }
+
+ lws_service_do_ripe_rxflow(pt);
+
+ return 0;
+}
+
+LWS_VISIBLE int
+lws_plat_check_connection_error(struct lws *wsi)
+{
+ return 0;
+}
+
+LWS_VISIBLE int
+lws_plat_service(struct lws_context *context, int timeout_ms)
+{
+ return _lws_plat_service_tsi(context, timeout_ms, 0);
+}
+
+LWS_VISIBLE int
+lws_plat_set_socket_options(struct lws_vhost *vhost, int fd)
+{
+ int optval = 1;
+ socklen_t optlen = sizeof(optval);
+
+#ifdef LWS_WITH_IPV6
+ optval = 0;
+ setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (const void*)&optval, optlen);
+#endif
+
+#if defined(__APPLE__) || \
+ defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
+ defined(__NetBSD__) || \
+ defined(__OpenBSD__) || \
+ defined(__HAIKU__)
+ struct protoent *tcp_proto;
+#endif
+
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+
+ if (vhost->ka_time) {
+ /* enable keepalive on this socket */
+ optval = 1;
+ if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE,
+ (const void *)&optval, optlen) < 0)
+ return 1;
+
+#if defined(__APPLE__) || \
+ defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
+ defined(__NetBSD__) || \
+ defined(__CYGWIN__) || defined(__OpenBSD__) || defined (__sun) || \
+ defined(__HAIKU__)
+
+ /*
+ * didn't find a way to set these per-socket, need to
+ * tune kernel systemwide values
+ */
+#else
+ /* set the keepalive conditions we want on it too */
+
+#if defined(LWS_HAVE_TCP_USER_TIMEOUT)
+ optval = 1000 * (vhost->ka_time +
+ (vhost->ka_interval * vhost->ka_probes));
+ if (setsockopt(fd, IPPROTO_TCP, TCP_USER_TIMEOUT,
+ (const void *)&optval, optlen) < 0)
+ return 1;
+#endif
+ optval = vhost->ka_time;
+ if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE,
+ (const void *)&optval, optlen) < 0)
+ return 1;
+
+ optval = vhost->ka_interval;
+ if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL,
+ (const void *)&optval, optlen) < 0)
+ return 1;
+
+ optval = vhost->ka_probes;
+ if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT,
+ (const void *)&optval, optlen) < 0)
+ return 1;
+#endif
+ }
+
+#if defined(SO_BINDTODEVICE)
+ if (vhost->bind_iface && vhost->iface) {
+ lwsl_info("binding listen skt to %s using SO_BINDTODEVICE\n", vhost->iface);
+ if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, vhost->iface,
+ strlen(vhost->iface)) < 0) {
+ lwsl_warn("Failed to bind to device %s\n", vhost->iface);
+ return 1;
+ }
+ }
+#endif
+
+ /* Disable Nagle */
+ optval = 1;
+#if defined (__sun) || defined(__QNX__)
+ if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0)
+ return 1;
+#elif !defined(__APPLE__) && \
+ !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) && \
+ !defined(__NetBSD__) && \
+ !defined(__OpenBSD__) && \
+ !defined(__HAIKU__)
+ if (setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&optval, optlen) < 0)
+ return 1;
+#else
+ tcp_proto = getprotobyname("TCP");
+ if (setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, &optval, optlen) < 0)
+ return 1;
+#endif
+
+ /* We are nonblocking... */
+ if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
+ return 1;
+
+ return 0;
+}
+
+#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP)
+static void
+_lws_plat_apply_caps(int mode, const cap_value_t *cv, int count)
+{
+ cap_t caps;
+
+ if (!count)
+ return;
+
+ caps = cap_get_proc();
+
+ cap_set_flag(caps, mode, count, cv, CAP_SET);
+ cap_set_proc(caps);
+ prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0);
+ cap_free(caps);
+}
+#endif
+
+LWS_VISIBLE void
+lws_plat_drop_app_privileges(const struct lws_context_creation_info *info)
+{
+#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP)
+ int n;
+#endif
+
+ if (info->gid && info->gid != -1)
+ if (setgid(info->gid))
+ lwsl_warn("setgid: %s\n", strerror(LWS_ERRNO));
+
+ if (info->uid && info->uid != -1) {
+ struct passwd *p = getpwuid(info->uid);
+
+ if (p) {
+
+#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP)
+ _lws_plat_apply_caps(CAP_PERMITTED, info->caps, info->count_caps);
+#endif
+
+ initgroups(p->pw_name, info->gid);
+ if (setuid(info->uid))
+ lwsl_warn("setuid: %s\n", strerror(LWS_ERRNO));
+ else
+ lwsl_notice("Set privs to user '%s'\n", p->pw_name);
+
+#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP)
+ _lws_plat_apply_caps(CAP_EFFECTIVE, info->caps, info->count_caps);
+
+ if (info->count_caps)
+ for (n = 0; n < info->count_caps; n++)
+ lwsl_notice(" RETAINING CAPABILITY %d\n", (int)info->caps[n]);
+#endif
+
+ } else
+ lwsl_warn("getpwuid: unable to find uid %d", info->uid);
+ }
+}
+
+#ifdef LWS_WITH_PLUGINS
+
+#if defined(LWS_WITH_LIBUV) && UV_VERSION_MAJOR > 0
+
+/* libuv.c implements these in a cross-platform way */
+
+#else
+
+static int filter(const struct dirent *ent)
+{
+ if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
+ return 0;
+
+ return 1;
+}
+
+LWS_VISIBLE int
+lws_plat_plugins_init(struct lws_context * context, const char * const *d)
+{
+ struct lws_plugin_capability lcaps;
+ struct lws_plugin *plugin;
+ lws_plugin_init_func initfunc;
+ struct dirent **namelist;
+ int n, i, m, ret = 0;
+ char path[256];
+ void *l;
+
+ lwsl_notice(" Plugins:\n");
+
+ while (d && *d) {
+ n = scandir(*d, &namelist, filter, alphasort);
+ if (n < 0) {
+ lwsl_err("Scandir on %s failed\n", *d);
+ return 1;
+ }
+
+ for (i = 0; i < n; i++) {
+ if (strlen(namelist[i]->d_name) < 7)
+ goto inval;
+
+ lwsl_notice(" %s\n", namelist[i]->d_name);
+
+ lws_snprintf(path, sizeof(path) - 1, "%s/%s", *d,
+ namelist[i]->d_name);
+ l = dlopen(path, RTLD_NOW);
+ if (!l) {
+ lwsl_err("Error loading DSO: %s\n", dlerror());
+ while (i++ < n)
+ free(namelist[i]);
+ goto bail;
+ }
+ /* we could open it, can we get his init function? */
+ m = lws_snprintf(path, sizeof(path) - 1, "init_%s",
+ namelist[i]->d_name + 3 /* snip lib... */);
+ path[m - 3] = '\0'; /* snip the .so */
+ initfunc = dlsym(l, path);
+ if (!initfunc) {
+ lwsl_err("Failed to get init on %s: %s",
+ namelist[i]->d_name, dlerror());
+ dlclose(l);
+ }
+ lcaps.api_magic = LWS_PLUGIN_API_MAGIC;
+ m = initfunc(context, &lcaps);
+ if (m) {
+ lwsl_err("Initializing %s failed %d\n",
+ namelist[i]->d_name, m);
+ dlclose(l);
+ goto skip;
+ }
+
+ plugin = lws_malloc(sizeof(*plugin), "plugin");
+ if (!plugin) {
+ lwsl_err("OOM\n");
+ goto bail;
+ }
+ plugin->list = context->plugin_list;
+ context->plugin_list = plugin;
+ lws_strncpy(plugin->name, namelist[i]->d_name,
+ sizeof(plugin->name));
+ plugin->l = l;
+ plugin->caps = lcaps;
+ context->plugin_protocol_count += lcaps.count_protocols;
+ context->plugin_extension_count += lcaps.count_extensions;
+
+ free(namelist[i]);
+ continue;
+
+ skip:
+ dlclose(l);
+ inval:
+ free(namelist[i]);
+ }
+ free(namelist);
+ d++;
+ }
+
+bail:
+ free(namelist);
+
+ return ret;
+}
+
+LWS_VISIBLE int
+lws_plat_plugins_destroy(struct lws_context * context)
+{
+ struct lws_plugin *plugin = context->plugin_list, *p;
+ lws_plugin_destroy_func func;
+ char path[256];
+ int m;
+
+ if (!plugin)
+ return 0;
+
+ lwsl_notice("%s\n", __func__);
+
+ while (plugin) {
+ p = plugin;
+ m = lws_snprintf(path, sizeof(path) - 1, "destroy_%s", plugin->name + 3);
+ path[m - 3] = '\0';
+ func = dlsym(plugin->l, path);
+ if (!func) {
+ lwsl_err("Failed to get destroy on %s: %s",
+ plugin->name, dlerror());
+ goto next;
+ }
+ m = func(context);
+ if (m)
+ lwsl_err("Initializing %s failed %d\n",
+ plugin->name, m);
+next:
+ dlclose(p->l);
+ plugin = p->list;
+ p->list = NULL;
+ free(p);
+ }
+
+ context->plugin_list = NULL;
+
+ return 0;
+}
+
+#endif
+#endif
+
+
+#if 0
+static void
+sigabrt_handler(int x)
+{
+ printf("%s\n", __func__);
+}
+#endif
+
+LWS_VISIBLE int
+lws_plat_context_early_init(void)
+{
+#if !defined(LWS_AVOID_SIGPIPE_IGN)
+ signal(SIGPIPE, SIG_IGN);
+#endif
+
+ return 0;
+}
+
+LWS_VISIBLE void
+lws_plat_context_early_destroy(struct lws_context *context)
+{
+}
+
+LWS_VISIBLE void
+lws_plat_context_late_destroy(struct lws_context *context)
+{
+#ifdef LWS_WITH_PLUGINS
+ if (context->plugin_list)
+ lws_plat_plugins_destroy(context);
+#endif
+
+ if (context->lws_lookup)
+ lws_free(context->lws_lookup);
+
+ if (!context->fd_random)
+ lwsl_err("ZERO RANDOM FD\n");
+ if (context->fd_random != LWS_INVALID_FILE)
+ close(context->fd_random);
+}
+
+/* cast a struct sockaddr_in6 * into addr for ipv6 */
+
+LWS_VISIBLE int
+lws_interface_to_sa(int ipv6, const char *ifname, struct sockaddr_in *addr,
+ size_t addrlen)
+{
+ int rc = LWS_ITOSA_NOT_EXIST;
+
+ struct ifaddrs *ifr;
+ struct ifaddrs *ifc;
+#ifdef LWS_WITH_IPV6
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)addr;
+#endif
+
+ getifaddrs(&ifr);
+ for (ifc = ifr; ifc != NULL && rc; ifc = ifc->ifa_next) {
+ if (!ifc->ifa_addr)
+ continue;
+
+ lwsl_debug(" interface %s vs %s (fam %d) ipv6 %d\n", ifc->ifa_name, ifname, ifc->ifa_addr->sa_family, ipv6);
+
+ if (strcmp(ifc->ifa_name, ifname))
+ continue;
+
+ switch (ifc->ifa_addr->sa_family) {
+#if defined(AF_PACKET)
+ case AF_PACKET:
+ /* interface exists but is not usable */
+ rc = LWS_ITOSA_NOT_USABLE;
+ continue;
+#endif
+
+ case AF_INET:
+#ifdef LWS_WITH_IPV6
+ if (ipv6) {
+ /* map IPv4 to IPv6 */
+ bzero((char *)&addr6->sin6_addr,
+ sizeof(struct in6_addr));
+ addr6->sin6_addr.s6_addr[10] = 0xff;
+ addr6->sin6_addr.s6_addr[11] = 0xff;
+ memcpy(&addr6->sin6_addr.s6_addr[12],
+ &((struct sockaddr_in *)ifc->ifa_addr)->sin_addr,
+ sizeof(struct in_addr));
+ } else
+#endif
+ memcpy(addr,
+ (struct sockaddr_in *)ifc->ifa_addr,
+ sizeof(struct sockaddr_in));
+ break;
+#ifdef LWS_WITH_IPV6
+ case AF_INET6:
+ memcpy(&addr6->sin6_addr,
+ &((struct sockaddr_in6 *)ifc->ifa_addr)->sin6_addr,
+ sizeof(struct in6_addr));
+ break;
+#endif
+ default:
+ continue;
+ }
+ rc = LWS_ITOSA_USABLE;
+ }
+
+ freeifaddrs(ifr);
+
+ if (rc) {
+ /* check if bind to IP address */
+#ifdef LWS_WITH_IPV6
+ if (inet_pton(AF_INET6, ifname, &addr6->sin6_addr) == 1)
+ rc = LWS_ITOSA_USABLE;
+ else
+#endif
+ if (inet_pton(AF_INET, ifname, &addr->sin_addr) == 1)
+ rc = LWS_ITOSA_USABLE;
+ }
+
+ return rc;
+}
+
+LWS_VISIBLE void
+lws_plat_insert_socket_into_fds(struct lws_context *context, struct lws *wsi)
+{
+ struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
+
+ if (context->event_loop_ops->io)
+ context->event_loop_ops->io(wsi, LWS_EV_START | LWS_EV_READ);
+
+ pt->fds[pt->fds_count++].revents = 0;
+}
+
+LWS_VISIBLE void
+lws_plat_delete_socket_from_fds(struct lws_context *context,
+ struct lws *wsi, int m)
+{
+ struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
+
+ if (context->event_loop_ops->io)
+ context->event_loop_ops->io(wsi,
+ LWS_EV_STOP | LWS_EV_READ | LWS_EV_WRITE);
+
+ pt->fds_count--;
+}
+
+LWS_VISIBLE void
+lws_plat_service_periodic(struct lws_context *context)
+{
+ /* if our parent went down, don't linger around */
+ if (context->started_with_parent &&
+ kill(context->started_with_parent, 0) < 0)
+ kill(getpid(), SIGTERM);
+}
+
+LWS_VISIBLE int
+lws_plat_change_pollfd(struct lws_context *context,
+ struct lws *wsi, struct lws_pollfd *pfd)
+{
+ return 0;
+}
+
+LWS_VISIBLE const char *
+lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt)
+{
+ return inet_ntop(af, src, dst, cnt);
+}
+
+LWS_VISIBLE int
+lws_plat_inet_pton(int af, const char *src, void *dst)
+{
+ return inet_pton(af, src, dst);
+}
+
+LWS_VISIBLE lws_fop_fd_t
+_lws_plat_file_open(const struct lws_plat_file_ops *fops, const char *filename,
+ const char *vpath, lws_fop_flags_t *flags)
+{
+ struct stat stat_buf;
+ int ret = open(filename, (*flags) & LWS_FOP_FLAGS_MASK, 0664);
+ lws_fop_fd_t fop_fd;
+
+ if (ret < 0)
+ return NULL;
+
+ if (fstat(ret, &stat_buf) < 0)
+ goto bail;
+
+ fop_fd = malloc(sizeof(*fop_fd));
+ if (!fop_fd)
+ goto bail;
+
+ fop_fd->fops = fops;
+ fop_fd->flags = *flags;
+ fop_fd->fd = ret;
+ fop_fd->filesystem_priv = NULL; /* we don't use it */
+ fop_fd->len = stat_buf.st_size;
+ fop_fd->pos = 0;
+
+ return fop_fd;
+
+bail:
+ close(ret);
+ return NULL;
+}
+
+LWS_VISIBLE int
+_lws_plat_file_close(lws_fop_fd_t *fop_fd)
+{
+ int fd = (*fop_fd)->fd;
+
+ free(*fop_fd);
+ *fop_fd = NULL;
+
+ return close(fd);
+}
+
+LWS_VISIBLE lws_fileofs_t
+_lws_plat_file_seek_cur(lws_fop_fd_t fop_fd, lws_fileofs_t offset)
+{
+ lws_fileofs_t r;
+
+ if (offset > 0 &&
+ offset > (lws_fileofs_t)fop_fd->len - (lws_fileofs_t)fop_fd->pos)
+ offset = fop_fd->len - fop_fd->pos;
+
+ if ((lws_fileofs_t)fop_fd->pos + offset < 0)
+ offset = -fop_fd->pos;
+
+ r = lseek(fop_fd->fd, offset, SEEK_CUR);
+
+ if (r >= 0)
+ fop_fd->pos = r;
+ else
+ lwsl_err("error seeking from cur %ld, offset %ld\n",
+ (long)fop_fd->pos, (long)offset);
+
+ return r;
+}
+
+LWS_VISIBLE int
+_lws_plat_file_read(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
+ uint8_t *buf, lws_filepos_t len)
+{
+ long n;
+
+ n = read((int)fop_fd->fd, buf, len);
+ if (n == -1) {
+ *amount = 0;
+ return -1;
+ }
+ fop_fd->pos += n;
+ lwsl_debug("%s: read %ld of req %ld, pos %ld, len %ld\n", __func__, n,
+ (long)len, (long)fop_fd->pos, (long)fop_fd->len);
+ *amount = n;
+
+ return 0;
+}
+
+LWS_VISIBLE int
+_lws_plat_file_write(lws_fop_fd_t fop_fd, lws_filepos_t *amount,
+ uint8_t *buf, lws_filepos_t len)
+{
+ long n;
+
+ n = write((int)fop_fd->fd, buf, len);
+ if (n == -1) {
+ *amount = 0;
+ return -1;
+ }
+
+ fop_fd->pos += n;
+ *amount = n;
+
+ return 0;
+}
+
+LWS_VISIBLE int
+lws_plat_init(struct lws_context *context,
+ const struct lws_context_creation_info *info)
+{
+ int fd;
+
+ /* master context has the global fd lookup array */
+ context->lws_lookup = lws_zalloc(sizeof(struct lws *) *
+ context->max_fds, "lws_lookup");
+ if (context->lws_lookup == NULL) {
+ lwsl_err("OOM on lws_lookup array for %d connections\n",
+ context->max_fds);
+ return 1;
+ }
+
+ lwsl_info(" mem: platform fd map: %5lu bytes\n",
+ (unsigned long)(sizeof(struct lws *) * context->max_fds));
+ fd = open(SYSTEM_RANDOM_FILEPATH, O_RDONLY);
+
+ context->fd_random = fd;
+ if (context->fd_random < 0) {
+ lwsl_err("Unable to open random device %s %d\n",
+ SYSTEM_RANDOM_FILEPATH, context->fd_random);
+ return 1;
+ }
+
+#ifdef LWS_WITH_PLUGINS
+ if (info->plugin_dirs)
+ lws_plat_plugins_init(context, info->plugin_dirs);
+#endif
+
+ return 0;
+}
+
+LWS_VISIBLE int
+lws_plat_write_cert(struct lws_vhost *vhost, int is_key, int fd, void *buf,
+ int len)
+{
+ int n;
+
+ n = write(fd, buf, len);
+
+ fsync(fd);
+ lseek(fd, 0, SEEK_SET);
+
+ return n != len;
+}
+
+LWS_VISIBLE int
+lws_plat_write_file(const char *filename, void *buf, int len)
+{
+ int m, fd;
+
+ fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0600);
+
+ if (fd == -1)
+ return 1;
+
+ m = write(fd, buf, len);
+ close(fd);
+
+ return m != len;
+}
+
+LWS_VISIBLE int
+lws_plat_read_file(const char *filename, void *buf, int len)
+{
+ int n, fd = lws_open(filename, O_RDONLY);
+ if (fd == -1)
+ return -1;
+
+ n = read(fd, buf, len);
+ close(fd);
+
+ return n;
+}
+
+LWS_VISIBLE int
+lws_plat_recommended_rsa_bits(void)
+{
+ return 4096;
+}