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Diffstat (limited to 'thirdparty/libwebsockets/core/libwebsockets.c')
-rw-r--r--thirdparty/libwebsockets/core/libwebsockets.c3479
1 files changed, 3479 insertions, 0 deletions
diff --git a/thirdparty/libwebsockets/core/libwebsockets.c b/thirdparty/libwebsockets/core/libwebsockets.c
new file mode 100644
index 0000000000..58f00226f6
--- /dev/null
+++ b/thirdparty/libwebsockets/core/libwebsockets.c
@@ -0,0 +1,3479 @@
+/*
+ * 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
+ */
+
+#include "core/private.h"
+
+#ifdef LWS_HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef LWS_WITH_IPV6
+#if defined(WIN32) || defined(_WIN32)
+#include <wincrypt.h>
+#include <iphlpapi.h>
+#else
+#include <net/if.h>
+#endif
+#endif
+
+int log_level = LLL_ERR | LLL_WARN | LLL_NOTICE;
+static void (*lwsl_emit)(int level, const char *line)
+#ifndef LWS_PLAT_OPTEE
+ = lwsl_emit_stderr
+#endif
+ ;
+#ifndef LWS_PLAT_OPTEE
+static const char * const log_level_names[] = {
+ "ERR",
+ "WARN",
+ "NOTICE",
+ "INFO",
+ "DEBUG",
+ "PARSER",
+ "HEADER",
+ "EXTENSION",
+ "CLIENT",
+ "LATENCY",
+ "USER",
+ "?",
+ "?"
+};
+#endif
+
+int lws_open(const char *__file, int __oflag, ...)
+{
+ va_list ap;
+ int n;
+
+ va_start(ap, __oflag);
+ if (((__oflag & O_CREAT) == O_CREAT)
+#if defined(O_TMPFILE)
+ || ((__oflag & O_TMPFILE) == O_TMPFILE)
+#endif
+ )
+ /* last arg is really a mode_t. But windows... */
+ n = open(__file, __oflag, va_arg(ap, uint32_t));
+ else
+ n = open(__file, __oflag);
+ va_end(ap);
+
+ lws_plat_apply_FD_CLOEXEC(n);
+
+ return n;
+}
+
+#if defined (_DEBUG)
+void lwsi_set_role(struct lws *wsi, lws_wsi_state_t role)
+{
+ wsi->wsistate = (wsi->wsistate & (~LWSI_ROLE_MASK)) | role;
+
+ lwsl_debug("lwsi_set_role(%p, 0x%x)\n", wsi, wsi->wsistate);
+}
+
+void lwsi_set_state(struct lws *wsi, lws_wsi_state_t lrs)
+{
+ wsi->wsistate = (wsi->wsistate & (~LRS_MASK)) | lrs;
+
+ lwsl_debug("lwsi_set_state(%p, 0x%x)\n", wsi, wsi->wsistate);
+}
+#endif
+
+signed char char_to_hex(const char c)
+{
+ if (c >= '0' && c <= '9')
+ return c - '0';
+
+ if (c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+
+ if (c >= 'A' && c <= 'F')
+ return c - 'A' + 10;
+
+ return -1;
+}
+
+void
+__lws_free_wsi(struct lws *wsi)
+{
+ if (!wsi)
+ return;
+
+ /*
+ * Protocol user data may be allocated either internally by lws
+ * or by specified the user. We should only free what we allocated.
+ */
+ if (wsi->protocol && wsi->protocol->per_session_data_size &&
+ wsi->user_space && !wsi->user_space_externally_allocated)
+ lws_free(wsi->user_space);
+
+ lws_buflist_destroy_all_segments(&wsi->buflist);
+ lws_free_set_NULL(wsi->trunc_alloc);
+ lws_free_set_NULL(wsi->udp);
+
+ if (wsi->vhost && wsi->vhost->lserv_wsi == wsi)
+ wsi->vhost->lserv_wsi = NULL;
+
+ // lws_peer_dump_from_wsi(wsi);
+
+ if (wsi->role_ops->destroy_role)
+ wsi->role_ops->destroy_role(wsi);
+
+#if defined(LWS_WITH_PEER_LIMITS)
+ lws_peer_track_wsi_close(wsi->context, wsi->peer);
+ wsi->peer = NULL;
+#endif
+
+ /* since we will destroy the wsi, make absolutely sure now */
+
+#if defined(LWS_WITH_OPENSSL)
+ __lws_ssl_remove_wsi_from_buffered_list(wsi);
+#endif
+ __lws_remove_from_timeout_list(wsi);
+
+ if (wsi->context->event_loop_ops->destroy_wsi)
+ wsi->context->event_loop_ops->destroy_wsi(wsi);
+
+ wsi->context->count_wsi_allocated--;
+ lwsl_debug("%s: %p, remaining wsi %d\n", __func__, wsi,
+ wsi->context->count_wsi_allocated);
+
+ lws_free(wsi);
+}
+
+void
+lws_dll_add_front(struct lws_dll *d, struct lws_dll *phead)
+{
+ if (d->prev)
+ return;
+
+ /* our next guy is current first guy */
+ d->next = phead->next;
+ /* if there is a next guy, set his prev ptr to our next ptr */
+ if (d->next)
+ d->next->prev = d;
+ /* our prev ptr is first ptr */
+ d->prev = phead;
+ /* set the first guy to be us */
+ phead->next = d;
+}
+
+/* situation is:
+ *
+ * HEAD: struct lws_dll * = &entry1
+ *
+ * Entry 1: struct lws_dll .pprev = &HEAD , .next = Entry 2
+ * Entry 2: struct lws_dll .pprev = &entry1 , .next = &entry2
+ * Entry 3: struct lws_dll .pprev = &entry2 , .next = NULL
+ *
+ * Delete Entry1:
+ *
+ * - HEAD = &entry2
+ * - Entry2: .pprev = &HEAD, .next = &entry3
+ * - Entry3: .pprev = &entry2, .next = NULL
+ *
+ * Delete Entry2:
+ *
+ * - HEAD = &entry1
+ * - Entry1: .pprev = &HEAD, .next = &entry3
+ * - Entry3: .pprev = &entry1, .next = NULL
+ *
+ * Delete Entry3:
+ *
+ * - HEAD = &entry1
+ * - Entry1: .pprev = &HEAD, .next = &entry2
+ * - Entry2: .pprev = &entry1, .next = NULL
+ *
+ */
+
+void
+lws_dll_remove(struct lws_dll *d)
+{
+ if (!d->prev) /* ie, not part of the list */
+ return;
+
+ /*
+ * remove us
+ *
+ * USp <-> us <-> USn --> USp <-> USn
+ */
+
+ /* if we have a next guy, set his prev to our prev */
+ if (d->next)
+ d->next->prev = d->prev;
+
+ /* set our prev guy to our next guy instead of us */
+ if (d->prev)
+ d->prev->next = d->next;
+
+ /* we're out of the list, we should not point anywhere any more */
+ d->prev = NULL;
+ d->next = NULL;
+}
+
+void
+__lws_remove_from_timeout_list(struct lws *wsi)
+{
+ lws_dll_lws_remove(&wsi->dll_timeout);
+}
+
+void
+lws_remove_from_timeout_list(struct lws *wsi)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+
+ lws_pt_lock(pt, __func__);
+ __lws_remove_from_timeout_list(wsi);
+ lws_pt_unlock(pt);
+}
+
+void
+lws_dll_dump(struct lws_dll_lws *head, const char *title)
+{
+ int n = 0;
+
+ (void)n;
+ lwsl_notice("%s: %s (head.next %p)\n", __func__, title, head->next);
+
+ lws_start_foreach_dll_safe(struct lws_dll_lws *, d, d1, head->next) {
+ struct lws *wsi = lws_container_of(d, struct lws, dll_hrtimer);
+
+ (void)wsi;
+
+ lwsl_notice(" %d: wsi %p: %llu\n", n++, wsi,
+ (unsigned long long)wsi->pending_timer);
+ } lws_end_foreach_dll_safe(d, d1);
+}
+
+void
+__lws_set_timer_usecs(struct lws *wsi, lws_usec_t usecs)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ struct lws_dll_lws *dd = &pt->dll_head_hrtimer;
+ struct timeval now;
+ struct lws *wsi1;
+ int bef = 0;
+
+ lws_dll_lws_remove(&wsi->dll_hrtimer);
+
+ if (usecs == LWS_SET_TIMER_USEC_CANCEL)
+ return;
+
+ gettimeofday(&now, NULL);
+ wsi->pending_timer = ((now.tv_sec * 1000000ll) + now.tv_usec) + usecs;
+
+ /*
+ * we sort the hrtimer list with the earliest timeout first
+ */
+
+ lws_start_foreach_dll_safe(struct lws_dll_lws *, d, d1,
+ pt->dll_head_hrtimer.next) {
+ dd = d;
+ wsi1 = lws_container_of(d, struct lws, dll_hrtimer);
+
+ if (wsi1->pending_timer >= wsi->pending_timer) {
+ /* d, dprev's next, is >= our time */
+ bef = 1;
+ break;
+ }
+ } lws_end_foreach_dll_safe(d, d1);
+
+ if (bef) {
+ /*
+ * we go before dd
+ * DDp <-> DD <-> DDn --> DDp <-> us <-> DD <-> DDn
+ */
+ /* we point forward to dd */
+ wsi->dll_hrtimer.next = dd;
+ /* we point back to what dd used to point back to */
+ wsi->dll_hrtimer.prev = dd->prev;
+ /* DDp points forward to us now */
+ dd->prev->next = &wsi->dll_hrtimer;
+ /* DD points back to us now */
+ dd->prev = &wsi->dll_hrtimer;
+ } else {
+ /*
+ * we go after dd
+ * DDp <-> DD <-> DDn --> DDp <-> DD <-> us <-> DDn
+ */
+ /* we point forward to what dd used to point forward to */
+ wsi->dll_hrtimer.next = dd->next;
+ /* we point back to dd */
+ wsi->dll_hrtimer.prev = dd;
+ /* DDn points back to us */
+ if (dd->next)
+ dd->next->prev = &wsi->dll_hrtimer;
+ /* DD points forward to us */
+ dd->next = &wsi->dll_hrtimer;
+ }
+
+// lws_dll_dump(&pt->dll_head_hrtimer, "after set_timer_usec");
+}
+
+LWS_VISIBLE void
+lws_set_timer_usecs(struct lws *wsi, lws_usec_t usecs)
+{
+ __lws_set_timer_usecs(wsi, usecs);
+}
+
+lws_usec_t
+__lws_hrtimer_service(struct lws_context_per_thread *pt)
+{
+ struct timeval now;
+ struct lws *wsi;
+ lws_usec_t t;
+
+ gettimeofday(&now, NULL);
+ t = (now.tv_sec * 1000000ll) + now.tv_usec;
+
+ lws_start_foreach_dll_safe(struct lws_dll_lws *, d, d1,
+ pt->dll_head_hrtimer.next) {
+ wsi = lws_container_of(d, struct lws, dll_hrtimer);
+
+ /*
+ * if we met one in the future, we are done, because the list
+ * is sorted by time in the future.
+ */
+ if (wsi->pending_timer > t)
+ break;
+
+ lws_set_timer_usecs(wsi, LWS_SET_TIMER_USEC_CANCEL);
+
+ /* it's time for the timer to be serviced */
+
+ if (wsi->protocol &&
+ wsi->protocol->callback(wsi, LWS_CALLBACK_TIMER,
+ wsi->user_space, NULL, 0))
+ __lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS,
+ "timer cb errored");
+ } lws_end_foreach_dll_safe(d, d1);
+
+ /* return an estimate how many us until next timer hit */
+
+ if (!pt->dll_head_hrtimer.next)
+ return LWS_HRTIMER_NOWAIT;
+
+ wsi = lws_container_of(pt->dll_head_hrtimer.next, struct lws, dll_hrtimer);
+
+ gettimeofday(&now, NULL);
+ t = (now.tv_sec * 1000000ll) + now.tv_usec;
+
+ if (wsi->pending_timer < t)
+ return 0;
+
+ return wsi->pending_timer - t;
+}
+
+void
+__lws_set_timeout(struct lws *wsi, enum pending_timeout reason, int secs)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ time_t now;
+
+ time(&now);
+
+ lwsl_debug("%s: %p: %d secs\n", __func__, wsi, secs);
+ wsi->pending_timeout_limit = secs;
+ wsi->pending_timeout_set = now;
+ wsi->pending_timeout = reason;
+
+ if (!reason)
+ lws_dll_lws_remove(&wsi->dll_timeout);
+ else
+ lws_dll_lws_add_front(&wsi->dll_timeout, &pt->dll_head_timeout);
+}
+
+LWS_VISIBLE void
+lws_set_timeout(struct lws *wsi, enum pending_timeout reason, int secs)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+
+ if (secs == LWS_TO_KILL_SYNC) {
+ lws_remove_from_timeout_list(wsi);
+ lwsl_debug("synchronously killing %p\n", wsi);
+ lws_close_free_wsi(wsi, LWS_CLOSE_STATUS_NOSTATUS, "to sync kill");
+ return;
+ }
+
+ if (secs == LWS_TO_KILL_ASYNC)
+ secs = 0;
+
+ lws_pt_lock(pt, __func__);
+ __lws_set_timeout(wsi, reason, secs);
+ lws_pt_unlock(pt);
+}
+
+int
+lws_timed_callback_remove(struct lws_vhost *vh, struct lws_timed_vh_protocol *p)
+{
+ lws_start_foreach_llp(struct lws_timed_vh_protocol **, pt,
+ vh->timed_vh_protocol_list) {
+ if (*pt == p) {
+ *pt = p->next;
+ lws_free(p);
+
+ return 0;
+ }
+ } lws_end_foreach_llp(pt, next);
+
+ return 1;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_timed_callback_vh_protocol(struct lws_vhost *vh, const struct lws_protocols *prot,
+ int reason, int secs)
+{
+ struct lws_timed_vh_protocol *p = (struct lws_timed_vh_protocol *)
+ lws_malloc(sizeof(*p), "timed_vh");
+
+ if (!p)
+ return 1;
+
+ p->protocol = prot;
+ p->reason = reason;
+ p->time = lws_now_secs() + secs;
+ p->next = vh->timed_vh_protocol_list;
+
+ vh->timed_vh_protocol_list = p;
+
+ return 0;
+}
+
+static void
+lws_remove_child_from_any_parent(struct lws *wsi)
+{
+ struct lws **pwsi;
+ int seen = 0;
+
+ if (!wsi->parent)
+ return;
+
+ /* detach ourselves from parent's child list */
+ pwsi = &wsi->parent->child_list;
+ while (*pwsi) {
+ if (*pwsi == wsi) {
+ lwsl_info("%s: detach %p from parent %p\n", __func__,
+ wsi, wsi->parent);
+
+ if (wsi->parent->protocol)
+ wsi->parent->protocol->callback(wsi,
+ LWS_CALLBACK_CHILD_CLOSING,
+ wsi->parent->user_space, wsi, 0);
+
+ *pwsi = wsi->sibling_list;
+ seen = 1;
+ break;
+ }
+ pwsi = &(*pwsi)->sibling_list;
+ }
+ if (!seen)
+ lwsl_err("%s: failed to detach from parent\n", __func__);
+
+ wsi->parent = NULL;
+}
+
+int
+lws_bind_protocol(struct lws *wsi, const struct lws_protocols *p)
+{
+// if (wsi->protocol == p)
+// return 0;
+ const struct lws_protocols *vp = wsi->vhost->protocols, *vpo;
+
+ if (wsi->protocol && wsi->protocol_bind_balance) {
+ wsi->protocol->callback(wsi, LWS_CALLBACK_HTTP_DROP_PROTOCOL,
+ wsi->user_space, NULL, 0);
+ wsi->protocol_bind_balance = 0;
+ }
+ if (!wsi->user_space_externally_allocated)
+ lws_free_set_NULL(wsi->user_space);
+
+ lws_same_vh_protocol_remove(wsi);
+
+ wsi->protocol = p;
+ if (!p)
+ return 0;
+
+ if (lws_ensure_user_space(wsi))
+ return 1;
+
+ if (p > vp && p < &vp[wsi->vhost->count_protocols])
+ lws_same_vh_protocol_insert(wsi, (int)(p - vp));
+ else {
+ int n = wsi->vhost->count_protocols;
+ int hit = 0;
+
+ vpo = vp;
+
+ while (n--) {
+ if (p->name && vp->name && !strcmp(p->name, vp->name)) {
+ hit = 1;
+ lws_same_vh_protocol_insert(wsi, (int)(vp - vpo));
+ break;
+ }
+ vp++;
+ }
+ if (!hit)
+ lwsl_err("%s: %p is not in vhost '%s' protocols list\n",
+ __func__, p, wsi->vhost->name);
+ }
+
+ if (wsi->protocol->callback(wsi, LWS_CALLBACK_HTTP_BIND_PROTOCOL,
+ wsi->user_space, NULL, 0))
+ return 1;
+
+ wsi->protocol_bind_balance = 1;
+
+ return 0;
+}
+
+void
+__lws_close_free_wsi(struct lws *wsi, enum lws_close_status reason, const char *caller)
+{
+ struct lws_context_per_thread *pt;
+ struct lws *wsi1, *wsi2;
+ struct lws_context *context;
+ int n;
+
+ lwsl_info("%s: %p: caller: %s\n", __func__, wsi, caller);
+
+ if (!wsi)
+ return;
+
+ lws_access_log(wsi);
+
+ context = wsi->context;
+ pt = &context->pt[(int)wsi->tsi];
+ lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_API_CLOSE, 1);
+
+#if !defined(LWS_NO_CLIENT)
+
+ lws_free_set_NULL(wsi->client_hostname_copy);
+ /* we are no longer an active client connection that can piggyback */
+ lws_dll_lws_remove(&wsi->dll_active_client_conns);
+
+ /*
+ * if we have wsi in our transaction queue, if we are closing we
+ * must go through and close all those first
+ */
+ if (wsi->vhost) {
+ if ((int)reason != -1)
+ lws_vhost_lock(wsi->vhost);
+ lws_start_foreach_dll_safe(struct lws_dll_lws *, d, d1,
+ wsi->dll_client_transaction_queue_head.next) {
+ struct lws *w = lws_container_of(d, struct lws,
+ dll_client_transaction_queue);
+
+ __lws_close_free_wsi(w, -1, "trans q leader closing");
+ } lws_end_foreach_dll_safe(d, d1);
+
+ /*
+ * !!! If we are closing, but we have pending pipelined transaction
+ * results we already sent headers for, that's going to destroy sync
+ * for HTTP/1 and leave H2 stream with no live swsi.
+ *
+ * However this is normal if we are being closed because the transaction
+ * queue leader is closing.
+ */
+ lws_dll_lws_remove(&wsi->dll_client_transaction_queue);
+ if ((int)reason !=-1)
+ lws_vhost_unlock(wsi->vhost);
+ }
+#endif
+
+ /* if we have children, close them first */
+ if (wsi->child_list) {
+ wsi2 = wsi->child_list;
+ while (wsi2) {
+ wsi1 = wsi2->sibling_list;
+ wsi2->parent = NULL;
+ /* stop it doing shutdown processing */
+ wsi2->socket_is_permanently_unusable = 1;
+ __lws_close_free_wsi(wsi2, reason, "general child recurse");
+ wsi2 = wsi1;
+ }
+ wsi->child_list = NULL;
+ }
+
+ if (wsi->role_ops == &role_ops_raw_file) {
+ lws_remove_child_from_any_parent(wsi);
+ __remove_wsi_socket_from_fds(wsi);
+ wsi->protocol->callback(wsi, wsi->role_ops->close_cb[0],
+ wsi->user_space, NULL, 0);
+ goto async_close;
+ }
+
+ wsi->wsistate_pre_close = wsi->wsistate;
+
+#ifdef LWS_WITH_CGI
+ if (wsi->role_ops == &role_ops_cgi) {
+ /* we are not a network connection, but a handler for CGI io */
+ if (wsi->parent && wsi->parent->http.cgi) {
+
+ if (wsi->cgi_channel == LWS_STDOUT)
+ lws_cgi_remove_and_kill(wsi->parent);
+
+ /* end the binding between us and master */
+ wsi->parent->http.cgi->stdwsi[(int)wsi->cgi_channel] = NULL;
+ }
+ wsi->socket_is_permanently_unusable = 1;
+
+ goto just_kill_connection;
+ }
+
+ if (wsi->http.cgi)
+ lws_cgi_remove_and_kill(wsi);
+#endif
+
+#if !defined(LWS_NO_CLIENT)
+ lws_client_stash_destroy(wsi);
+#endif
+
+ if (wsi->role_ops == &role_ops_raw_skt) {
+ wsi->socket_is_permanently_unusable = 1;
+ goto just_kill_connection;
+ }
+#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
+ if (lwsi_role_http(wsi) && lwsi_role_server(wsi) &&
+ wsi->http.fop_fd != NULL)
+ lws_vfs_file_close(&wsi->http.fop_fd);
+#endif
+
+ if (lwsi_state(wsi) == LRS_DEAD_SOCKET)
+ return;
+
+ if (wsi->socket_is_permanently_unusable ||
+ reason == LWS_CLOSE_STATUS_NOSTATUS_CONTEXT_DESTROY ||
+ lwsi_state(wsi) == LRS_SHUTDOWN)
+ goto just_kill_connection;
+
+ switch (lwsi_state_PRE_CLOSE(wsi)) {
+ case LRS_DEAD_SOCKET:
+ return;
+
+ /* we tried the polite way... */
+ case LRS_WAITING_TO_SEND_CLOSE:
+ case LRS_AWAITING_CLOSE_ACK:
+ case LRS_RETURNED_CLOSE:
+ goto just_kill_connection;
+
+ case LRS_FLUSHING_BEFORE_CLOSE:
+ if (wsi->trunc_len) {
+ lws_callback_on_writable(wsi);
+ return;
+ }
+ lwsl_info("%p: end LRS_FLUSHING_BEFORE_CLOSE\n", wsi);
+ goto just_kill_connection;
+ default:
+ if (wsi->trunc_len) {
+ lwsl_info("%p: LRS_FLUSHING_BEFORE_CLOSE\n", wsi);
+ lwsi_set_state(wsi, LRS_FLUSHING_BEFORE_CLOSE);
+ __lws_set_timeout(wsi,
+ PENDING_FLUSH_STORED_SEND_BEFORE_CLOSE, 5);
+ return;
+ }
+ break;
+ }
+
+ if (lwsi_state(wsi) == LRS_WAITING_CONNECT ||
+ lwsi_state(wsi) == LRS_H1C_ISSUE_HANDSHAKE)
+ goto just_kill_connection;
+
+ if (!wsi->told_user_closed && lwsi_role_http(wsi) &&
+ lwsi_role_server(wsi)) {
+ if (wsi->user_space && wsi->protocol &&
+ wsi->protocol_bind_balance) {
+ wsi->protocol->callback(wsi,
+ LWS_CALLBACK_HTTP_DROP_PROTOCOL,
+ wsi->user_space, NULL, 0);
+ wsi->protocol_bind_balance = 0;
+ }
+ }
+
+ /*
+ * signal we are closing, lws_write will
+ * add any necessary version-specific stuff. If the write fails,
+ * no worries we are closing anyway. If we didn't initiate this
+ * close, then our state has been changed to
+ * LRS_RETURNED_CLOSE and we will skip this.
+ *
+ * Likewise if it's a second call to close this connection after we
+ * sent the close indication to the peer already, we are in state
+ * LRS_AWAITING_CLOSE_ACK and will skip doing this a second time.
+ */
+
+ if (wsi->role_ops->close_via_role_protocol &&
+ wsi->role_ops->close_via_role_protocol(wsi, reason))
+ return;
+
+just_kill_connection:
+
+ if (wsi->role_ops->close_kill_connection)
+ wsi->role_ops->close_kill_connection(wsi, reason);
+
+ lws_remove_child_from_any_parent(wsi);
+ n = 0;
+
+ if (!wsi->told_user_closed && wsi->user_space &&
+ wsi->protocol_bind_balance) {
+ lwsl_debug("%s: %p: DROP_PROTOCOL %s\n", __func__, wsi,
+ wsi->protocol->name);
+ wsi->protocol->callback(wsi, LWS_CALLBACK_HTTP_DROP_PROTOCOL,
+ wsi->user_space, NULL, 0);
+ wsi->protocol_bind_balance = 0;
+ }
+
+ if ((lwsi_state(wsi) == LRS_WAITING_SERVER_REPLY ||
+ lwsi_state(wsi) == LRS_WAITING_CONNECT) && !wsi->already_did_cce)
+ wsi->protocol->callback(wsi,
+ LWS_CALLBACK_CLIENT_CONNECTION_ERROR,
+ wsi->user_space, NULL, 0);
+
+ /*
+ * Testing with ab shows that we have to stage the socket close when
+ * the system is under stress... shutdown any further TX, change the
+ * state to one that won't emit anything more, and wait with a timeout
+ * for the POLLIN to show a zero-size rx before coming back and doing
+ * the actual close.
+ */
+ if (wsi->role_ops != &role_ops_raw_skt && !lwsi_role_client(wsi) &&
+ lwsi_state(wsi) != LRS_SHUTDOWN &&
+ lwsi_state(wsi) != LRS_UNCONNECTED &&
+ reason != LWS_CLOSE_STATUS_NOSTATUS_CONTEXT_DESTROY &&
+ !wsi->socket_is_permanently_unusable) {
+
+#if defined(LWS_WITH_TLS)
+ if (lws_is_ssl(wsi) && wsi->tls.ssl) {
+ n = 0;
+ switch (__lws_tls_shutdown(wsi)) {
+ case LWS_SSL_CAPABLE_DONE:
+ case LWS_SSL_CAPABLE_ERROR:
+ case LWS_SSL_CAPABLE_MORE_SERVICE_READ:
+ case LWS_SSL_CAPABLE_MORE_SERVICE_WRITE:
+ case LWS_SSL_CAPABLE_MORE_SERVICE:
+ break;
+ }
+ } else
+#endif
+ {
+ lwsl_info("%s: shutdown conn: %p (sock %d, state 0x%x)\n",
+ __func__, wsi, (int)(long)wsi->desc.sockfd,
+ lwsi_state(wsi));
+ if (!wsi->socket_is_permanently_unusable &&
+ lws_socket_is_valid(wsi->desc.sockfd)) {
+ wsi->socket_is_permanently_unusable = 1;
+ n = shutdown(wsi->desc.sockfd, SHUT_WR);
+ }
+ }
+ if (n)
+ lwsl_debug("closing: shutdown (state 0x%x) ret %d\n",
+ lwsi_state(wsi), LWS_ERRNO);
+
+ /*
+ * This causes problems on WINCE / ESP32 with disconnection
+ * when the events are half closing connection
+ */
+#if !defined(_WIN32_WCE) && !defined(LWS_WITH_ESP32)
+ /* libuv: no event available to guarantee completion */
+ if (!wsi->socket_is_permanently_unusable &&
+ lws_socket_is_valid(wsi->desc.sockfd) &&
+ lwsi_state(wsi) != LRS_SHUTDOWN &&
+ context->event_loop_ops->periodic_events_available) {
+ __lws_change_pollfd(wsi, LWS_POLLOUT, LWS_POLLIN);
+ lwsi_set_state(wsi, LRS_SHUTDOWN);
+ __lws_set_timeout(wsi, PENDING_TIMEOUT_SHUTDOWN_FLUSH,
+ context->timeout_secs);
+
+ return;
+ }
+#endif
+ }
+
+ lwsl_debug("%s: real just_kill_connection: %p (sockfd %d)\n", __func__,
+ wsi, wsi->desc.sockfd);
+
+#ifdef LWS_WITH_HTTP_PROXY
+ if (wsi->http.rw) {
+ lws_rewrite_destroy(wsi->http.rw);
+ wsi->http.rw = NULL;
+ }
+#endif
+ /*
+ * we won't be servicing or receiving anything further from this guy
+ * delete socket from the internal poll list if still present
+ */
+ __lws_ssl_remove_wsi_from_buffered_list(wsi);
+ __lws_remove_from_timeout_list(wsi);
+ lws_dll_lws_remove(&wsi->dll_hrtimer);
+
+ /* don't repeat event loop stuff */
+ if (wsi->told_event_loop_closed)
+ return;
+
+ /* checking return redundant since we anyway close */
+ if (wsi->desc.sockfd != LWS_SOCK_INVALID)
+ __remove_wsi_socket_from_fds(wsi);
+ else
+ lws_same_vh_protocol_remove(wsi);
+
+ lwsi_set_state(wsi, LRS_DEAD_SOCKET);
+ lws_buflist_destroy_all_segments(&wsi->buflist);
+ lws_dll_lws_remove(&wsi->dll_buflist);
+
+ if (wsi->role_ops->close_role)
+ wsi->role_ops->close_role(pt, wsi);
+
+ /* tell the user it's all over for this guy */
+
+ if (lwsi_state_est_PRE_CLOSE(wsi) && !wsi->told_user_closed &&
+ wsi->role_ops->close_cb[lwsi_role_server(wsi)]) {
+ const struct lws_protocols *pro = wsi->protocol;
+
+ if (!wsi->protocol)
+ pro = &wsi->vhost->protocols[0];
+
+ if (!wsi->upgraded_to_http2 || !lwsi_role_client(wsi))
+ /*
+ * The network wsi for a client h2 connection shouldn't
+ * call back for its role: the child stream connections
+ * own the role. Otherwise h2 will call back closed
+ * one too many times as the children do it and then
+ * the closing network stream.
+ */
+ pro->callback(wsi,
+ wsi->role_ops->close_cb[lwsi_role_server(wsi)],
+ wsi->user_space, NULL, 0);
+ wsi->told_user_closed = 1;
+ }
+
+async_close:
+ wsi->socket_is_permanently_unusable = 1;
+
+ if (wsi->context->event_loop_ops->wsi_logical_close)
+ if (wsi->context->event_loop_ops->wsi_logical_close(wsi))
+ return;
+
+ __lws_close_free_wsi_final(wsi);
+}
+
+void
+__lws_close_free_wsi_final(struct lws *wsi)
+{
+ int n;
+
+ if (lws_socket_is_valid(wsi->desc.sockfd) && !lws_ssl_close(wsi)) {
+ n = compatible_close(wsi->desc.sockfd);
+ if (n)
+ lwsl_debug("closing: close ret %d\n", LWS_ERRNO);
+
+ wsi->desc.sockfd = LWS_SOCK_INVALID;
+ }
+
+ /* outermost destroy notification for wsi (user_space still intact) */
+ if (wsi->vhost)
+ wsi->vhost->protocols[0].callback(wsi, LWS_CALLBACK_WSI_DESTROY,
+ wsi->user_space, NULL, 0);
+
+#ifdef LWS_WITH_CGI
+ if (wsi->http.cgi) {
+
+ for (n = 0; n < 3; n++) {
+ if (wsi->http.cgi->pipe_fds[n][!!(n == 0)] == 0)
+ lwsl_err("ZERO FD IN CGI CLOSE");
+
+ if (wsi->http.cgi->pipe_fds[n][!!(n == 0)] >= 0)
+ close(wsi->http.cgi->pipe_fds[n][!!(n == 0)]);
+ }
+
+ lws_free(wsi->http.cgi);
+ }
+#endif
+
+ __lws_free_wsi(wsi);
+}
+
+
+void
+lws_close_free_wsi(struct lws *wsi, enum lws_close_status reason, const char *caller)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+
+ lws_pt_lock(pt, __func__);
+ __lws_close_free_wsi(wsi, reason, caller);
+ lws_pt_unlock(pt);
+}
+
+/* lws_buflist */
+
+int
+lws_buflist_append_segment(struct lws_buflist **head, const uint8_t *buf,
+ size_t len)
+{
+ struct lws_buflist *nbuf;
+ int first = !*head;
+ void *p = *head;
+ int sanity = 1024;
+
+ assert(buf);
+ assert(len);
+
+ /* append at the tail */
+ while (*head) {
+ if (!--sanity || head == &((*head)->next)) {
+ lwsl_err("%s: corrupt list points to self\n", __func__);
+ return -1;
+ }
+ head = &((*head)->next);
+ }
+
+ lwsl_info("%s: len %u first %d %p\n", __func__, (uint32_t)len, first, p);
+
+ nbuf = (struct lws_buflist *)
+ lws_malloc(sizeof(**head) + len, __func__);
+ if (!nbuf) {
+ lwsl_err("%s: OOM\n", __func__);
+ return -1;
+ }
+
+ nbuf->len = len;
+ nbuf->pos = 0;
+ nbuf->next = NULL;
+
+ p = (void *)nbuf->buf;
+ memcpy(p, buf, len);
+
+ *head = nbuf;
+
+ return first; /* returns 1 if first segment just created */
+}
+
+static int
+lws_buflist_destroy_segment(struct lws_buflist **head)
+{
+ struct lws_buflist *old = *head;
+
+ assert(*head);
+ *head = (*head)->next;
+ old->next = NULL;
+ lws_free(old);
+
+ return !*head; /* returns 1 if last segment just destroyed */
+}
+
+void
+lws_buflist_destroy_all_segments(struct lws_buflist **head)
+{
+ struct lws_buflist *p = *head, *p1;
+
+ while (p) {
+ p1 = p->next;
+ p->next = NULL;
+ lws_free(p);
+ p = p1;
+ }
+
+ *head = NULL;
+}
+
+size_t
+lws_buflist_next_segment_len(struct lws_buflist **head, uint8_t **buf)
+{
+ if (!*head) {
+ if (buf)
+ *buf = NULL;
+
+ return 0;
+ }
+
+ if (!(*head)->len && (*head)->next)
+ lws_buflist_destroy_segment(head);
+
+ if (!*head) {
+ if (buf)
+ *buf = NULL;
+
+ return 0;
+ }
+
+ assert((*head)->pos < (*head)->len);
+
+ if (buf)
+ *buf = (*head)->buf + (*head)->pos;
+
+ return (*head)->len - (*head)->pos;
+}
+
+int
+lws_buflist_use_segment(struct lws_buflist **head, size_t len)
+{
+ assert(*head);
+ assert(len);
+ assert((*head)->pos + len <= (*head)->len);
+
+ (*head)->pos += len;
+ if ((*head)->pos == (*head)->len)
+ lws_buflist_destroy_segment(head);
+
+ if (!*head)
+ return 0;
+
+ return (int)((*head)->len - (*head)->pos);
+}
+
+void
+lws_buflist_describe(struct lws_buflist **head, void *id)
+{
+ struct lws_buflist *old;
+ int n = 0;
+
+ if (*head == NULL)
+ lwsl_notice("%p: buflist empty\n", id);
+
+ while (*head) {
+ lwsl_notice("%p: %d: %llu / %llu (%llu left)\n", id, n,
+ (unsigned long long)(*head)->pos,
+ (unsigned long long)(*head)->len,
+ (unsigned long long)(*head)->len - (*head)->pos);
+ old = *head;
+ head = &((*head)->next);
+ if (*head == old) {
+ lwsl_err("%s: next points to self\n", __func__);
+ break;
+ }
+ n++;
+ }
+}
+
+/* ... */
+
+LWS_VISIBLE LWS_EXTERN const char *
+lws_get_urlarg_by_name(struct lws *wsi, const char *name, char *buf, int len)
+{
+ int n = 0, sl = (int)strlen(name);
+
+ while (lws_hdr_copy_fragment(wsi, buf, len,
+ WSI_TOKEN_HTTP_URI_ARGS, n) >= 0) {
+
+ if (!strncmp(buf, name, sl))
+ return buf + sl;
+
+ n++;
+ }
+
+ return NULL;
+}
+
+#if !defined(LWS_WITH_ESP32)
+LWS_VISIBLE int
+interface_to_sa(struct lws_vhost *vh, const char *ifname,
+ struct sockaddr_in *addr, size_t addrlen)
+{
+ int ipv6 = 0;
+#ifdef LWS_WITH_IPV6
+ ipv6 = LWS_IPV6_ENABLED(vh);
+#endif
+ (void)vh;
+
+ return lws_interface_to_sa(ipv6, ifname, addr, addrlen);
+}
+#endif
+
+#ifndef LWS_PLAT_OPTEE
+static int
+lws_get_addresses(struct lws_vhost *vh, void *ads, char *name,
+ int name_len, char *rip, int rip_len)
+{
+ struct addrinfo ai, *res;
+ struct sockaddr_in addr4;
+
+ rip[0] = '\0';
+ name[0] = '\0';
+ addr4.sin_family = AF_UNSPEC;
+
+#ifdef LWS_WITH_IPV6
+ if (LWS_IPV6_ENABLED(vh)) {
+ if (!lws_plat_inet_ntop(AF_INET6,
+ &((struct sockaddr_in6 *)ads)->sin6_addr,
+ rip, rip_len)) {
+ lwsl_err("inet_ntop: %s", strerror(LWS_ERRNO));
+ return -1;
+ }
+
+ // Strip off the IPv4 to IPv6 header if one exists
+ if (strncmp(rip, "::ffff:", 7) == 0)
+ memmove(rip, rip + 7, strlen(rip) - 6);
+
+ getnameinfo((struct sockaddr *)ads, sizeof(struct sockaddr_in6),
+ name, name_len, NULL, 0, 0);
+
+ return 0;
+ } else
+#endif
+ {
+ struct addrinfo *result;
+
+ memset(&ai, 0, sizeof ai);
+ ai.ai_family = PF_UNSPEC;
+ ai.ai_socktype = SOCK_STREAM;
+#if !defined(LWS_WITH_ESP32)
+ if (getnameinfo((struct sockaddr *)ads,
+ sizeof(struct sockaddr_in),
+ name, name_len, NULL, 0, 0))
+ return -1;
+#endif
+
+ if (getaddrinfo(name, NULL, &ai, &result))
+ return -1;
+
+ res = result;
+ while (addr4.sin_family == AF_UNSPEC && res) {
+ switch (res->ai_family) {
+ case AF_INET:
+ addr4.sin_addr =
+ ((struct sockaddr_in *)res->ai_addr)->sin_addr;
+ addr4.sin_family = AF_INET;
+ break;
+ }
+
+ res = res->ai_next;
+ }
+ freeaddrinfo(result);
+ }
+
+ if (addr4.sin_family == AF_UNSPEC)
+ return -1;
+
+ if (lws_plat_inet_ntop(AF_INET, &addr4.sin_addr, rip, rip_len) == NULL)
+ return -1;
+
+ return 0;
+}
+
+
+LWS_VISIBLE const char *
+lws_get_peer_simple(struct lws *wsi, char *name, int namelen)
+{
+ socklen_t len, olen;
+#ifdef LWS_WITH_IPV6
+ struct sockaddr_in6 sin6;
+#endif
+ struct sockaddr_in sin4;
+ int af = AF_INET;
+ void *p, *q;
+
+ wsi = lws_get_network_wsi(wsi);
+
+ if (wsi->parent_carries_io)
+ wsi = wsi->parent;
+
+#ifdef LWS_WITH_IPV6
+ if (LWS_IPV6_ENABLED(wsi->vhost)) {
+ len = sizeof(sin6);
+ p = &sin6;
+ af = AF_INET6;
+ q = &sin6.sin6_addr;
+ } else
+#endif
+ {
+ len = sizeof(sin4);
+ p = &sin4;
+ q = &sin4.sin_addr;
+ }
+
+ olen = len;
+ if (getpeername(wsi->desc.sockfd, p, &len) < 0 || len > olen) {
+ lwsl_warn("getpeername: %s\n", strerror(LWS_ERRNO));
+ return NULL;
+ }
+
+ return lws_plat_inet_ntop(af, q, name, namelen);
+}
+#endif
+
+LWS_VISIBLE void
+lws_get_peer_addresses(struct lws *wsi, lws_sockfd_type fd, char *name,
+ int name_len, char *rip, int rip_len)
+{
+#ifndef LWS_PLAT_OPTEE
+ socklen_t len;
+#ifdef LWS_WITH_IPV6
+ struct sockaddr_in6 sin6;
+#endif
+ struct sockaddr_in sin4;
+ struct lws_context *context = wsi->context;
+ int ret = -1;
+ void *p;
+
+ rip[0] = '\0';
+ name[0] = '\0';
+
+ lws_latency_pre(context, wsi);
+
+#ifdef LWS_WITH_IPV6
+ if (LWS_IPV6_ENABLED(wsi->vhost)) {
+ len = sizeof(sin6);
+ p = &sin6;
+ } else
+#endif
+ {
+ len = sizeof(sin4);
+ p = &sin4;
+ }
+
+ if (getpeername(fd, p, &len) < 0) {
+ lwsl_warn("getpeername: %s\n", strerror(LWS_ERRNO));
+ goto bail;
+ }
+
+ ret = lws_get_addresses(wsi->vhost, p, name, name_len, rip, rip_len);
+
+bail:
+ lws_latency(context, wsi, "lws_get_peer_addresses", ret, 1);
+#endif
+ (void)wsi;
+ (void)fd;
+ (void)name;
+ (void)name_len;
+ (void)rip;
+ (void)rip_len;
+
+}
+
+LWS_EXTERN void *
+lws_vhost_user(struct lws_vhost *vhost)
+{
+ return vhost->user;
+}
+
+LWS_EXTERN void *
+lws_context_user(struct lws_context *context)
+{
+ return context->user_space;
+}
+
+LWS_VISIBLE struct lws_vhost *
+lws_vhost_get(struct lws *wsi)
+{
+ return wsi->vhost;
+}
+
+LWS_VISIBLE struct lws_vhost *
+lws_get_vhost(struct lws *wsi)
+{
+ return wsi->vhost;
+}
+
+LWS_VISIBLE const struct lws_protocols *
+lws_protocol_get(struct lws *wsi)
+{
+ return wsi->protocol;
+}
+
+LWS_VISIBLE const struct lws_udp *
+lws_get_udp(const struct lws *wsi)
+{
+ return wsi->udp;
+}
+
+LWS_VISIBLE struct lws *
+lws_get_network_wsi(struct lws *wsi)
+{
+ if (!wsi)
+ return NULL;
+
+#if defined(LWS_WITH_HTTP2)
+ if (!wsi->http2_substream && !wsi->client_h2_substream)
+ return wsi;
+
+ while (wsi->h2.parent_wsi)
+ wsi = wsi->h2.parent_wsi;
+#endif
+
+ return wsi;
+}
+
+LWS_VISIBLE LWS_EXTERN const struct lws_protocols *
+lws_vhost_name_to_protocol(struct lws_vhost *vh, const char *name)
+{
+ int n;
+
+ for (n = 0; n < vh->count_protocols; n++)
+ if (!strcmp(name, vh->protocols[n].name))
+ return &vh->protocols[n];
+
+ return NULL;
+}
+
+LWS_VISIBLE int
+lws_callback_all_protocol(struct lws_context *context,
+ const struct lws_protocols *protocol, int reason)
+{
+ struct lws_context_per_thread *pt = &context->pt[0];
+ unsigned int n, m = context->count_threads;
+ struct lws *wsi;
+
+ while (m--) {
+ for (n = 0; n < pt->fds_count; n++) {
+ wsi = wsi_from_fd(context, pt->fds[n].fd);
+ if (!wsi)
+ continue;
+ if (wsi->protocol == protocol)
+ protocol->callback(wsi, reason, wsi->user_space,
+ NULL, 0);
+ }
+ pt++;
+ }
+
+ return 0;
+}
+
+LWS_VISIBLE int
+lws_callback_all_protocol_vhost_args(struct lws_vhost *vh,
+ const struct lws_protocols *protocol, int reason,
+ void *argp, size_t len)
+{
+ struct lws_context *context = vh->context;
+ struct lws_context_per_thread *pt = &context->pt[0];
+ unsigned int n, m = context->count_threads;
+ struct lws *wsi;
+
+ while (m--) {
+ for (n = 0; n < pt->fds_count; n++) {
+ wsi = wsi_from_fd(context, pt->fds[n].fd);
+ if (!wsi)
+ continue;
+ if (wsi->vhost == vh && (wsi->protocol == protocol ||
+ !protocol))
+ wsi->protocol->callback(wsi, reason,
+ wsi->user_space, argp, len);
+ }
+ pt++;
+ }
+
+ return 0;
+}
+
+LWS_VISIBLE int
+lws_callback_all_protocol_vhost(struct lws_vhost *vh,
+ const struct lws_protocols *protocol, int reason)
+{
+ return lws_callback_all_protocol_vhost_args(vh, protocol, reason, NULL, 0);
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_callback_vhost_protocols(struct lws *wsi, int reason, void *in, int len)
+{
+ int n;
+
+ for (n = 0; n < wsi->vhost->count_protocols; n++)
+ if (wsi->vhost->protocols[n].callback(wsi, reason, NULL, in, len))
+ return 1;
+
+ return 0;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_callback_vhost_protocols_vhost(struct lws_vhost *vh, int reason, void *in,
+ size_t len)
+{
+ int n;
+ struct lws *wsi = lws_zalloc(sizeof(*wsi), "fake wsi");
+
+ wsi->context = vh->context;
+ wsi->vhost = vh;
+
+ for (n = 0; n < wsi->vhost->count_protocols; n++) {
+ wsi->protocol = &vh->protocols[n];
+ if (wsi->protocol->callback(wsi, reason, NULL, in, len)) {
+ lws_free(wsi);
+ return 1;
+ }
+ }
+
+ lws_free(wsi);
+
+ return 0;
+}
+
+LWS_VISIBLE LWS_EXTERN void
+lws_set_fops(struct lws_context *context, const struct lws_plat_file_ops *fops)
+{
+ context->fops = fops;
+}
+
+LWS_VISIBLE LWS_EXTERN lws_filepos_t
+lws_vfs_tell(lws_fop_fd_t fop_fd)
+{
+ return fop_fd->pos;
+}
+
+LWS_VISIBLE LWS_EXTERN lws_filepos_t
+lws_vfs_get_length(lws_fop_fd_t fop_fd)
+{
+ return fop_fd->len;
+}
+
+LWS_VISIBLE LWS_EXTERN uint32_t
+lws_vfs_get_mod_time(lws_fop_fd_t fop_fd)
+{
+ return fop_fd->mod_time;
+}
+
+LWS_VISIBLE lws_fileofs_t
+lws_vfs_file_seek_set(lws_fop_fd_t fop_fd, lws_fileofs_t offset)
+{
+ lws_fileofs_t ofs;
+
+ ofs = fop_fd->fops->LWS_FOP_SEEK_CUR(fop_fd, offset - fop_fd->pos);
+
+ return ofs;
+}
+
+
+LWS_VISIBLE lws_fileofs_t
+lws_vfs_file_seek_end(lws_fop_fd_t fop_fd, lws_fileofs_t offset)
+{
+ return fop_fd->fops->LWS_FOP_SEEK_CUR(fop_fd, fop_fd->len +
+ fop_fd->pos + offset);
+}
+
+
+const struct lws_plat_file_ops *
+lws_vfs_select_fops(const struct lws_plat_file_ops *fops, const char *vfs_path,
+ const char **vpath)
+{
+ const struct lws_plat_file_ops *pf;
+ const char *p = vfs_path;
+ int n;
+
+ *vpath = NULL;
+
+ /* no non-platform fops, just use that */
+
+ if (!fops->next)
+ return fops;
+
+ /*
+ * scan the vfs path looking for indications we are to be
+ * handled by a specific fops
+ */
+
+ while (p && *p) {
+ if (*p != '/') {
+ p++;
+ continue;
+ }
+ /* the first one is always platform fops, so skip */
+ pf = fops->next;
+ while (pf) {
+ n = 0;
+ while (n < (int)LWS_ARRAY_SIZE(pf->fi) && pf->fi[n].sig) {
+ if (p >= vfs_path + pf->fi[n].len)
+ if (!strncmp(p - (pf->fi[n].len - 1),
+ pf->fi[n].sig,
+ pf->fi[n].len - 1)) {
+ *vpath = p + 1;
+ return pf;
+ }
+
+ n++;
+ }
+ pf = pf->next;
+ }
+ p++;
+ }
+
+ return fops;
+}
+
+LWS_VISIBLE LWS_EXTERN lws_fop_fd_t LWS_WARN_UNUSED_RESULT
+lws_vfs_file_open(const struct lws_plat_file_ops *fops, const char *vfs_path,
+ lws_fop_flags_t *flags)
+{
+ const char *vpath = "";
+ const struct lws_plat_file_ops *selected;
+
+ selected = lws_vfs_select_fops(fops, vfs_path, &vpath);
+
+ return selected->LWS_FOP_OPEN(fops, vfs_path, vpath, flags);
+}
+
+
+/**
+ * lws_now_secs() - seconds since 1970-1-1
+ *
+ */
+LWS_VISIBLE LWS_EXTERN unsigned long
+lws_now_secs(void)
+{
+ struct timeval tv;
+
+ gettimeofday(&tv, NULL);
+
+ return tv.tv_sec;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_compare_time_t(struct lws_context *context, time_t t1, time_t t2)
+{
+ if (t1 < context->time_discontiguity)
+ t1 += context->time_fixup;
+
+ if (t2 < context->time_discontiguity)
+ t2 += context->time_fixup;
+
+ return (int)(t1 - t2);
+}
+
+LWS_VISIBLE lws_sockfd_type
+lws_get_socket_fd(struct lws *wsi)
+{
+ if (!wsi)
+ return -1;
+ return wsi->desc.sockfd;
+}
+
+#ifdef LWS_LATENCY
+void
+lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
+ int ret, int completed)
+{
+ unsigned long long u;
+ char buf[256];
+
+ u = time_in_microseconds();
+
+ if (!action) {
+ wsi->latency_start = u;
+ if (!wsi->action_start)
+ wsi->action_start = u;
+ return;
+ }
+ if (completed) {
+ if (wsi->action_start == wsi->latency_start)
+ sprintf(buf,
+ "Completion first try lat %lluus: %p: ret %d: %s\n",
+ u - wsi->latency_start,
+ (void *)wsi, ret, action);
+ else
+ sprintf(buf,
+ "Completion %lluus: lat %lluus: %p: ret %d: %s\n",
+ u - wsi->action_start,
+ u - wsi->latency_start,
+ (void *)wsi, ret, action);
+ wsi->action_start = 0;
+ } else
+ sprintf(buf, "lat %lluus: %p: ret %d: %s\n",
+ u - wsi->latency_start, (void *)wsi, ret, action);
+
+ if (u - wsi->latency_start > context->worst_latency) {
+ context->worst_latency = u - wsi->latency_start;
+ strcpy(context->worst_latency_info, buf);
+ }
+ lwsl_latency("%s", buf);
+}
+#endif
+
+LWS_VISIBLE int
+lws_rx_flow_control(struct lws *wsi, int _enable)
+{
+ struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
+ int en = _enable;
+
+ // h2 ignores rx flow control atm
+ if (lwsi_role_h2(wsi) || wsi->http2_substream ||
+ lwsi_role_h2_ENCAPSULATION(wsi))
+ return 0; // !!!
+
+ lwsl_info("%s: %p 0x%x\n", __func__, wsi, _enable);
+
+ if (!(_enable & LWS_RXFLOW_REASON_APPLIES)) {
+ /*
+ * convert user bool style to bitmap style... in user simple
+ * bool style _enable = 0 = flow control it, = 1 = allow rx
+ */
+ en = LWS_RXFLOW_REASON_APPLIES | LWS_RXFLOW_REASON_USER_BOOL;
+ if (_enable & 1)
+ en |= LWS_RXFLOW_REASON_APPLIES_ENABLE_BIT;
+ }
+
+ lws_pt_lock(pt, __func__);
+
+ /* any bit set in rxflow_bitmap DISABLEs rxflow control */
+ if (en & LWS_RXFLOW_REASON_APPLIES_ENABLE_BIT)
+ wsi->rxflow_bitmap &= ~(en & 0xff);
+ else
+ wsi->rxflow_bitmap |= en & 0xff;
+
+ if ((LWS_RXFLOW_PENDING_CHANGE | (!wsi->rxflow_bitmap)) ==
+ wsi->rxflow_change_to)
+ goto skip;
+
+ wsi->rxflow_change_to = LWS_RXFLOW_PENDING_CHANGE | !wsi->rxflow_bitmap;
+
+ lwsl_info("%s: %p: bitmap 0x%x: en 0x%x, ch 0x%x\n", __func__, wsi,
+ wsi->rxflow_bitmap, en, wsi->rxflow_change_to);
+
+ if (_enable & LWS_RXFLOW_REASON_FLAG_PROCESS_NOW ||
+ !wsi->rxflow_will_be_applied) {
+ en = __lws_rx_flow_control(wsi);
+ lws_pt_unlock(pt);
+
+ return en;
+ }
+
+skip:
+ lws_pt_unlock(pt);
+
+ return 0;
+}
+
+LWS_VISIBLE void
+lws_rx_flow_allow_all_protocol(const struct lws_context *context,
+ const struct lws_protocols *protocol)
+{
+ const struct lws_context_per_thread *pt = &context->pt[0];
+ struct lws *wsi;
+ unsigned int n, m = context->count_threads;
+
+ while (m--) {
+ for (n = 0; n < pt->fds_count; n++) {
+ wsi = wsi_from_fd(context, pt->fds[n].fd);
+ if (!wsi)
+ continue;
+ if (wsi->protocol == protocol)
+ lws_rx_flow_control(wsi, LWS_RXFLOW_ALLOW);
+ }
+ pt++;
+ }
+}
+
+int
+lws_broadcast(struct lws_context *context, int reason, void *in, size_t len)
+{
+ struct lws_vhost *v = context->vhost_list;
+ struct lws wsi;
+ int n, ret = 0;
+
+ memset(&wsi, 0, sizeof(wsi));
+ wsi.context = context;
+
+ while (v) {
+ const struct lws_protocols *p = v->protocols;
+ wsi.vhost = v;
+
+ for (n = 0; n < v->count_protocols; n++) {
+ wsi.protocol = p;
+ if (p->callback &&
+ p->callback(&wsi, reason, NULL, in, len))
+ ret |= 1;
+ p++;
+ }
+ v = v->vhost_next;
+ }
+
+ return ret;
+}
+
+LWS_VISIBLE extern const char *
+lws_canonical_hostname(struct lws_context *context)
+{
+ return (const char *)context->canonical_hostname;
+}
+
+LWS_VISIBLE LWS_EXTERN const char *
+lws_get_vhost_name(struct lws_vhost *vhost)
+{
+ return vhost->name;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_get_vhost_port(struct lws_vhost *vhost)
+{
+ return vhost->listen_port;
+}
+
+LWS_VISIBLE LWS_EXTERN void *
+lws_get_vhost_user(struct lws_vhost *vhost)
+{
+ return vhost->user;
+}
+
+LWS_VISIBLE LWS_EXTERN const char *
+lws_get_vhost_iface(struct lws_vhost *vhost)
+{
+ return vhost->iface;
+}
+
+int user_callback_handle_rxflow(lws_callback_function callback_function,
+ struct lws *wsi,
+ enum lws_callback_reasons reason, void *user,
+ void *in, size_t len)
+{
+ int n;
+
+ wsi->rxflow_will_be_applied = 1;
+ n = callback_function(wsi, reason, user, in, len);
+ wsi->rxflow_will_be_applied = 0;
+ if (!n)
+ n = __lws_rx_flow_control(wsi);
+
+ return n;
+}
+
+#if !defined(LWS_WITHOUT_CLIENT)
+LWS_VISIBLE int
+lws_set_proxy(struct lws_vhost *vhost, const char *proxy)
+{
+ char *p;
+ char authstring[96];
+
+ if (!proxy)
+ return -1;
+
+ /* we have to deal with a possible redundant leading http:// */
+ if (!strncmp(proxy, "http://", 7))
+ proxy += 7;
+
+ p = strrchr(proxy, '@');
+ if (p) { /* auth is around */
+
+ if ((unsigned int)(p - proxy) > sizeof(authstring) - 1)
+ goto auth_too_long;
+
+ lws_strncpy(authstring, proxy, p - proxy + 1);
+ // null termination not needed on input
+ if (lws_b64_encode_string(authstring, lws_ptr_diff(p, proxy),
+ vhost->proxy_basic_auth_token,
+ sizeof vhost->proxy_basic_auth_token) < 0)
+ goto auth_too_long;
+
+ lwsl_info(" Proxy auth in use\n");
+
+ proxy = p + 1;
+ } else
+ vhost->proxy_basic_auth_token[0] = '\0';
+
+#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
+ lws_strncpy(vhost->http.http_proxy_address, proxy,
+ sizeof(vhost->http.http_proxy_address));
+
+ p = strchr(vhost->http.http_proxy_address, ':');
+ if (!p && !vhost->http.http_proxy_port) {
+ lwsl_err("http_proxy needs to be ads:port\n");
+
+ return -1;
+ } else {
+ if (p) {
+ *p = '\0';
+ vhost->http.http_proxy_port = atoi(p + 1);
+ }
+ }
+
+ lwsl_info(" Proxy %s:%u\n", vhost->http.http_proxy_address,
+ vhost->http.http_proxy_port);
+#endif
+ return 0;
+
+auth_too_long:
+ lwsl_err("proxy auth too long\n");
+
+ return -1;
+}
+#endif
+
+#if defined(LWS_WITH_SOCKS5)
+LWS_VISIBLE int
+lws_set_socks(struct lws_vhost *vhost, const char *socks)
+{
+ char *p_at, *p_colon;
+ char user[96];
+ char password[96];
+
+ if (!socks)
+ return -1;
+
+ vhost->socks_user[0] = '\0';
+ vhost->socks_password[0] = '\0';
+
+ p_at = strrchr(socks, '@');
+ if (p_at) { /* auth is around */
+ if ((unsigned int)(p_at - socks) > (sizeof(user)
+ + sizeof(password) - 2)) {
+ lwsl_err("Socks auth too long\n");
+ goto bail;
+ }
+
+ p_colon = strchr(socks, ':');
+ if (p_colon) {
+ if ((unsigned int)(p_colon - socks) > (sizeof(user)
+ - 1) ) {
+ lwsl_err("Socks user too long\n");
+ goto bail;
+ }
+ if ((unsigned int)(p_at - p_colon) > (sizeof(password)
+ - 1) ) {
+ lwsl_err("Socks password too long\n");
+ goto bail;
+ }
+
+ lws_strncpy(vhost->socks_user, socks, p_colon - socks + 1);
+ lws_strncpy(vhost->socks_password, p_colon + 1,
+ p_at - (p_colon + 1) + 1);
+ }
+
+ lwsl_info(" Socks auth, user: %s, password: %s\n",
+ vhost->socks_user, vhost->socks_password );
+
+ socks = p_at + 1;
+ }
+
+ lws_strncpy(vhost->socks_proxy_address, socks,
+ sizeof(vhost->socks_proxy_address));
+
+ p_colon = strchr(vhost->socks_proxy_address, ':');
+ if (!p_colon && !vhost->socks_proxy_port) {
+ lwsl_err("socks_proxy needs to be address:port\n");
+ return -1;
+ } else {
+ if (p_colon) {
+ *p_colon = '\0';
+ vhost->socks_proxy_port = atoi(p_colon + 1);
+ }
+ }
+
+ lwsl_info(" Socks %s:%u\n", vhost->socks_proxy_address,
+ vhost->socks_proxy_port);
+
+ return 0;
+
+bail:
+ return -1;
+}
+#endif
+
+LWS_VISIBLE const struct lws_protocols *
+lws_get_protocol(struct lws *wsi)
+{
+ return wsi->protocol;
+}
+
+
+int
+lws_ensure_user_space(struct lws *wsi)
+{
+ if (!wsi->protocol)
+ return 0;
+
+ /* allocate the per-connection user memory (if any) */
+
+ if (wsi->protocol->per_session_data_size && !wsi->user_space) {
+ wsi->user_space = lws_zalloc(
+ wsi->protocol->per_session_data_size, "user space");
+ if (wsi->user_space == NULL) {
+ lwsl_err("%s: OOM\n", __func__);
+ return 1;
+ }
+ } else
+ lwsl_debug("%s: %p protocol pss %lu, user_space=%p\n", __func__,
+ wsi, (long)wsi->protocol->per_session_data_size,
+ wsi->user_space);
+ return 0;
+}
+
+LWS_VISIBLE void *
+lws_adjust_protocol_psds(struct lws *wsi, size_t new_size)
+{
+ ((struct lws_protocols *)lws_get_protocol(wsi))->per_session_data_size =
+ new_size;
+
+ if (lws_ensure_user_space(wsi))
+ return NULL;
+
+ return wsi->user_space;
+}
+
+LWS_VISIBLE int
+lwsl_timestamp(int level, char *p, int len)
+{
+#ifndef LWS_PLAT_OPTEE
+ time_t o_now = time(NULL);
+ unsigned long long now;
+ struct tm *ptm = NULL;
+#ifndef WIN32
+ struct tm tm;
+#endif
+ int n;
+
+#ifndef _WIN32_WCE
+#ifdef WIN32
+ ptm = localtime(&o_now);
+#else
+ if (localtime_r(&o_now, &tm))
+ ptm = &tm;
+#endif
+#endif
+ p[0] = '\0';
+ for (n = 0; n < LLL_COUNT; n++) {
+ if (level != (1 << n))
+ continue;
+ now = time_in_microseconds() / 100;
+ if (ptm)
+ n = lws_snprintf(p, len,
+ "[%04d/%02d/%02d %02d:%02d:%02d:%04d] %s: ",
+ ptm->tm_year + 1900,
+ ptm->tm_mon + 1,
+ ptm->tm_mday,
+ ptm->tm_hour,
+ ptm->tm_min,
+ ptm->tm_sec,
+ (int)(now % 10000), log_level_names[n]);
+ else
+ n = lws_snprintf(p, len, "[%llu:%04d] %s: ",
+ (unsigned long long) now / 10000,
+ (int)(now % 10000), log_level_names[n]);
+ return n;
+ }
+#else
+ p[0] = '\0';
+#endif
+
+ return 0;
+}
+
+#ifndef LWS_PLAT_OPTEE
+static const char * const colours[] = {
+ "[31;1m", /* LLL_ERR */
+ "[36;1m", /* LLL_WARN */
+ "[35;1m", /* LLL_NOTICE */
+ "[32;1m", /* LLL_INFO */
+ "[34;1m", /* LLL_DEBUG */
+ "[33;1m", /* LLL_PARSER */
+ "[33m", /* LLL_HEADER */
+ "[33m", /* LLL_EXT */
+ "[33m", /* LLL_CLIENT */
+ "[33;1m", /* LLL_LATENCY */
+ "[30;1m", /* LLL_USER */
+};
+
+LWS_VISIBLE void lwsl_emit_stderr(int level, const char *line)
+{
+ char buf[50];
+ static char tty = 3;
+ int n, m = LWS_ARRAY_SIZE(colours) - 1;
+
+ if (!tty)
+ tty = isatty(2) | 2;
+ lwsl_timestamp(level, buf, sizeof(buf));
+
+ if (tty == 3) {
+ n = 1 << (LWS_ARRAY_SIZE(colours) - 1);
+ while (n) {
+ if (level & n)
+ break;
+ m--;
+ n >>= 1;
+ }
+ fprintf(stderr, "%c%s%s%s%c[0m", 27, colours[m], buf, line, 27);
+ } else
+ fprintf(stderr, "%s%s", buf, line);
+}
+#endif
+
+LWS_VISIBLE void _lws_logv(int filter, const char *format, va_list vl)
+{
+ char buf[256];
+ int n;
+
+ if (!(log_level & filter))
+ return;
+
+ n = vsnprintf(buf, sizeof(buf) - 1, format, vl);
+ (void)n;
+ /* vnsprintf returns what it would have written, even if truncated */
+ if (n > (int)sizeof(buf) - 1)
+ n = sizeof(buf) - 1;
+ if (n > 0)
+ buf[n] = '\0';
+
+ lwsl_emit(filter, buf);
+}
+
+LWS_VISIBLE void _lws_log(int filter, const char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ _lws_logv(filter, format, ap);
+ va_end(ap);
+}
+
+LWS_VISIBLE void lws_set_log_level(int level,
+ void (*func)(int level, const char *line))
+{
+ log_level = level;
+ if (func)
+ lwsl_emit = func;
+}
+
+LWS_VISIBLE int lwsl_visible(int level)
+{
+ return log_level & level;
+}
+
+LWS_VISIBLE void
+lwsl_hexdump_level(int hexdump_level, const void *vbuf, size_t len)
+{
+ unsigned char *buf = (unsigned char *)vbuf;
+ unsigned int n, m, start;
+ char line[80];
+ char *p;
+
+ if (!lwsl_visible(hexdump_level))
+ return;
+
+ if (!len)
+ return;
+
+ if (!vbuf)
+ return;
+
+ _lws_log(hexdump_level, "\n");
+
+ for (n = 0; n < len;) {
+ start = n;
+ p = line;
+
+ p += sprintf(p, "%04X: ", start);
+
+ for (m = 0; m < 16 && n < len; m++)
+ p += sprintf(p, "%02X ", buf[n++]);
+ while (m++ < 16)
+ p += sprintf(p, " ");
+
+ p += sprintf(p, " ");
+
+ for (m = 0; m < 16 && (start + m) < len; m++) {
+ if (buf[start + m] >= ' ' && buf[start + m] < 127)
+ *p++ = buf[start + m];
+ else
+ *p++ = '.';
+ }
+ while (m++ < 16)
+ *p++ = ' ';
+
+ *p++ = '\n';
+ *p = '\0';
+ _lws_log(hexdump_level, "%s", line);
+ (void)line;
+ }
+
+ _lws_log(hexdump_level, "\n");
+}
+
+LWS_VISIBLE void
+lwsl_hexdump(const void *vbuf, size_t len)
+{
+#if defined(_DEBUG)
+ lwsl_hexdump_level(LLL_DEBUG, vbuf, len);
+#endif
+}
+
+LWS_VISIBLE int
+lws_is_ssl(struct lws *wsi)
+{
+#if defined(LWS_WITH_TLS)
+ return wsi->tls.use_ssl & LCCSCF_USE_SSL;
+#else
+ (void)wsi;
+ return 0;
+#endif
+}
+
+#if defined(LWS_WITH_TLS) && !defined(LWS_WITH_MBEDTLS)
+LWS_VISIBLE lws_tls_conn*
+lws_get_ssl(struct lws *wsi)
+{
+ return wsi->tls.ssl;
+}
+#endif
+
+LWS_VISIBLE int
+lws_partial_buffered(struct lws *wsi)
+{
+ return !!wsi->trunc_len;
+}
+
+LWS_VISIBLE lws_fileofs_t
+lws_get_peer_write_allowance(struct lws *wsi)
+{
+ if (!wsi->role_ops->tx_credit)
+ return -1;
+ return wsi->role_ops->tx_credit(wsi);
+}
+
+LWS_VISIBLE void
+lws_role_transition(struct lws *wsi, enum lwsi_role role, enum lwsi_state state,
+ struct lws_role_ops *ops)
+{
+#if defined(_DEBUG)
+ const char *name = "(unset)";
+#endif
+ wsi->wsistate = role | state;
+ if (ops)
+ wsi->role_ops = ops;
+#if defined(_DEBUG)
+ if (wsi->role_ops)
+ name = wsi->role_ops->name;
+ lwsl_debug("%s: %p: wsistate 0x%x, ops %s\n", __func__, wsi,
+ wsi->wsistate, name);
+#endif
+}
+
+LWS_VISIBLE struct lws_plat_file_ops *
+lws_get_fops(struct lws_context *context)
+{
+ return (struct lws_plat_file_ops *)context->fops;
+}
+
+LWS_VISIBLE LWS_EXTERN struct lws_context *
+lws_get_context(const struct lws *wsi)
+{
+ return wsi->context;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_get_count_threads(struct lws_context *context)
+{
+ return context->count_threads;
+}
+
+LWS_VISIBLE LWS_EXTERN void *
+lws_wsi_user(struct lws *wsi)
+{
+ return wsi->user_space;
+}
+
+LWS_VISIBLE LWS_EXTERN void
+lws_set_wsi_user(struct lws *wsi, void *data)
+{
+ if (wsi->user_space_externally_allocated)
+ wsi->user_space = data;
+ else
+ lwsl_err("%s: Cannot set internally-allocated user_space\n",
+ __func__);
+}
+
+LWS_VISIBLE LWS_EXTERN struct lws *
+lws_get_parent(const struct lws *wsi)
+{
+ return wsi->parent;
+}
+
+LWS_VISIBLE LWS_EXTERN struct lws *
+lws_get_child(const struct lws *wsi)
+{
+ return wsi->child_list;
+}
+
+LWS_VISIBLE LWS_EXTERN void
+lws_set_parent_carries_io(struct lws *wsi)
+{
+ wsi->parent_carries_io = 1;
+}
+
+LWS_VISIBLE LWS_EXTERN void *
+lws_get_opaque_parent_data(const struct lws *wsi)
+{
+ return wsi->opaque_parent_data;
+}
+
+LWS_VISIBLE LWS_EXTERN void
+lws_set_opaque_parent_data(struct lws *wsi, void *data)
+{
+ wsi->opaque_parent_data = data;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_get_child_pending_on_writable(const struct lws *wsi)
+{
+ return wsi->parent_pending_cb_on_writable;
+}
+
+LWS_VISIBLE LWS_EXTERN void
+lws_clear_child_pending_on_writable(struct lws *wsi)
+{
+ wsi->parent_pending_cb_on_writable = 0;
+}
+
+
+LWS_EXTERN int
+__lws_rx_flow_control(struct lws *wsi)
+{
+ struct lws *wsic = wsi->child_list;
+
+ // h2 ignores rx flow control atm
+ if (lwsi_role_h2(wsi) || wsi->http2_substream ||
+ lwsi_role_h2_ENCAPSULATION(wsi))
+ return 0; // !!!
+
+ /* if he has children, do those if they were changed */
+ while (wsic) {
+ if (wsic->rxflow_change_to & LWS_RXFLOW_PENDING_CHANGE)
+ __lws_rx_flow_control(wsic);
+
+ wsic = wsic->sibling_list;
+ }
+
+ /* there is no pending change */
+ if (!(wsi->rxflow_change_to & LWS_RXFLOW_PENDING_CHANGE))
+ return 0;
+
+ /* stuff is still buffered, not ready to really accept new input */
+ if (lws_buflist_next_segment_len(&wsi->buflist, NULL)) {
+ /* get ourselves called back to deal with stashed buffer */
+ lws_callback_on_writable(wsi);
+ return 0;
+ }
+
+ /* now the pending is cleared, we can change rxflow state */
+
+ wsi->rxflow_change_to &= ~LWS_RXFLOW_PENDING_CHANGE;
+
+ lwsl_info("rxflow: wsi %p change_to %d\n", wsi,
+ wsi->rxflow_change_to & LWS_RXFLOW_ALLOW);
+
+ /* adjust the pollfd for this wsi */
+
+ if (wsi->rxflow_change_to & LWS_RXFLOW_ALLOW) {
+ if (__lws_change_pollfd(wsi, 0, LWS_POLLIN)) {
+ lwsl_info("%s: fail\n", __func__);
+ return -1;
+ }
+ } else
+ if (__lws_change_pollfd(wsi, LWS_POLLIN, 0))
+ return -1;
+
+ return 0;
+}
+
+LWS_EXTERN int
+lws_check_utf8(unsigned char *state, unsigned char *buf, size_t len)
+{
+ static const unsigned char e0f4[] = {
+ 0xa0 | ((2 - 1) << 2) | 1, /* e0 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e1 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e2 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e3 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e4 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e5 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e6 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e7 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e8 */
+ 0x80 | ((4 - 1) << 2) | 1, /* e9 */
+ 0x80 | ((4 - 1) << 2) | 1, /* ea */
+ 0x80 | ((4 - 1) << 2) | 1, /* eb */
+ 0x80 | ((4 - 1) << 2) | 1, /* ec */
+ 0x80 | ((2 - 1) << 2) | 1, /* ed */
+ 0x80 | ((4 - 1) << 2) | 1, /* ee */
+ 0x80 | ((4 - 1) << 2) | 1, /* ef */
+ 0x90 | ((3 - 1) << 2) | 2, /* f0 */
+ 0x80 | ((4 - 1) << 2) | 2, /* f1 */
+ 0x80 | ((4 - 1) << 2) | 2, /* f2 */
+ 0x80 | ((4 - 1) << 2) | 2, /* f3 */
+ 0x80 | ((1 - 1) << 2) | 2, /* f4 */
+
+ 0, /* s0 */
+ 0x80 | ((4 - 1) << 2) | 0, /* s2 */
+ 0x80 | ((4 - 1) << 2) | 1, /* s3 */
+ };
+ unsigned char s = *state;
+
+ while (len--) {
+ unsigned char c = *buf++;
+
+ if (!s) {
+ if (c >= 0x80) {
+ if (c < 0xc2 || c > 0xf4)
+ return 1;
+ if (c < 0xe0)
+ s = 0x80 | ((4 - 1) << 2);
+ else
+ s = e0f4[c - 0xe0];
+ }
+ } else {
+ if (c < (s & 0xf0) ||
+ c >= (s & 0xf0) + 0x10 + ((s << 2) & 0x30))
+ return 1;
+ s = e0f4[21 + (s & 3)];
+ }
+ }
+
+ *state = s;
+
+ return 0;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_parse_uri(char *p, const char **prot, const char **ads, int *port,
+ const char **path)
+{
+ const char *end;
+ static const char *slash = "/";
+
+ /* cut up the location into address, port and path */
+ *prot = p;
+ while (*p && (*p != ':' || p[1] != '/' || p[2] != '/'))
+ p++;
+ if (!*p) {
+ end = p;
+ p = (char *)*prot;
+ *prot = end;
+ } else {
+ *p = '\0';
+ p += 3;
+ }
+ *ads = p;
+ if (!strcmp(*prot, "http") || !strcmp(*prot, "ws"))
+ *port = 80;
+ else if (!strcmp(*prot, "https") || !strcmp(*prot, "wss"))
+ *port = 443;
+
+ if (*p == '[')
+ {
+ ++(*ads);
+ while (*p && *p != ']')
+ p++;
+ if (*p)
+ *p++ = '\0';
+ }
+ else
+ {
+ while (*p && *p != ':' && *p != '/')
+ p++;
+ }
+ if (*p == ':') {
+ *p++ = '\0';
+ *port = atoi(p);
+ while (*p && *p != '/')
+ p++;
+ }
+ *path = slash;
+ if (*p) {
+ *p++ = '\0';
+ if (*p)
+ *path = p;
+ }
+
+ return 0;
+}
+
+#if defined(LWS_WITHOUT_EXTENSIONS)
+
+/* we need to provide dummy callbacks for internal exts
+ * so user code runs when faced with a lib compiled with
+ * extensions disabled.
+ */
+
+LWS_VISIBLE int
+lws_extension_callback_pm_deflate(struct lws_context *context,
+ const struct lws_extension *ext,
+ struct lws *wsi,
+ enum lws_extension_callback_reasons reason,
+ void *user, void *in, size_t len)
+{
+ (void)context;
+ (void)ext;
+ (void)wsi;
+ (void)reason;
+ (void)user;
+ (void)in;
+ (void)len;
+
+ return 0;
+}
+
+LWS_EXTERN int
+lws_set_extension_option(struct lws *wsi, const char *ext_name,
+ const char *opt_name, const char *opt_val)
+{
+ return -1;
+}
+#endif
+
+LWS_EXTERN int
+lws_socket_bind(struct lws_vhost *vhost, lws_sockfd_type sockfd, int port,
+ const char *iface)
+{
+#ifdef LWS_WITH_UNIX_SOCK
+ struct sockaddr_un serv_unix;
+#endif
+#ifdef LWS_WITH_IPV6
+ struct sockaddr_in6 serv_addr6;
+#endif
+ struct sockaddr_in serv_addr4;
+#ifndef LWS_PLAT_OPTEE
+ socklen_t len = sizeof(struct sockaddr_storage);
+#endif
+ int n;
+#if !defined(LWS_WITH_ESP32)
+ int m;
+#endif
+ struct sockaddr_storage sin;
+ struct sockaddr *v;
+
+#ifdef LWS_WITH_UNIX_SOCK
+ if (LWS_UNIX_SOCK_ENABLED(vhost)) {
+ v = (struct sockaddr *)&serv_unix;
+ n = sizeof(struct sockaddr_un);
+ bzero((char *) &serv_unix, sizeof(serv_unix));
+ serv_unix.sun_family = AF_UNIX;
+ if (!iface)
+ return -1;
+ if (sizeof(serv_unix.sun_path) <= strlen(iface)) {
+ lwsl_err("\"%s\" too long for UNIX domain socket\n",
+ iface);
+ return -1;
+ }
+ strcpy(serv_unix.sun_path, iface);
+ if (serv_unix.sun_path[0] == '@')
+ serv_unix.sun_path[0] = '\0';
+
+ } else
+#endif
+#if defined(LWS_WITH_IPV6) && !defined(LWS_WITH_ESP32)
+ if (LWS_IPV6_ENABLED(vhost)) {
+ v = (struct sockaddr *)&serv_addr6;
+ n = sizeof(struct sockaddr_in6);
+ bzero((char *) &serv_addr6, sizeof(serv_addr6));
+ if (iface) {
+ m = interface_to_sa(vhost, iface,
+ (struct sockaddr_in *)v, n);
+ if (m == LWS_ITOSA_NOT_USABLE) {
+ lwsl_info("%s: netif %s: Not usable\n",
+ __func__, iface);
+ return m;
+ }
+ if (m == LWS_ITOSA_NOT_EXIST) {
+ lwsl_info("%s: netif %s: Does not exist\n",
+ __func__, iface);
+ return m;
+ }
+ serv_addr6.sin6_scope_id = lws_get_addr_scope(iface);
+ }
+
+ serv_addr6.sin6_family = AF_INET6;
+ serv_addr6.sin6_port = htons(port);
+ } else
+#endif
+ {
+ v = (struct sockaddr *)&serv_addr4;
+ n = sizeof(serv_addr4);
+ bzero((char *) &serv_addr4, sizeof(serv_addr4));
+ serv_addr4.sin_addr.s_addr = INADDR_ANY;
+ serv_addr4.sin_family = AF_INET;
+#if !defined(LWS_WITH_ESP32)
+
+ if (iface) {
+ m = interface_to_sa(vhost, iface,
+ (struct sockaddr_in *)v, n);
+ if (m == LWS_ITOSA_NOT_USABLE) {
+ lwsl_info("%s: netif %s: Not usable\n",
+ __func__, iface);
+ return m;
+ }
+ if (m == LWS_ITOSA_NOT_EXIST) {
+ lwsl_info("%s: netif %s: Does not exist\n",
+ __func__, iface);
+ return m;
+ }
+ }
+#endif
+ serv_addr4.sin_port = htons(port);
+ } /* ipv4 */
+
+ /* just checking for the interface extant */
+ if (sockfd == LWS_SOCK_INVALID)
+ return 0;
+
+ n = bind(sockfd, v, n);
+#ifdef LWS_WITH_UNIX_SOCK
+ if (n < 0 && LWS_UNIX_SOCK_ENABLED(vhost)) {
+ lwsl_err("ERROR on binding fd %d to \"%s\" (%d %d)\n",
+ sockfd, iface, n, LWS_ERRNO);
+ return -1;
+ } else
+#endif
+ if (n < 0) {
+ lwsl_err("ERROR on binding fd %d to port %d (%d %d)\n",
+ sockfd, port, n, LWS_ERRNO);
+ return -1;
+ }
+
+#ifndef LWS_PLAT_OPTEE
+ if (getsockname(sockfd, (struct sockaddr *)&sin, &len) == -1)
+ lwsl_warn("getsockname: %s\n", strerror(LWS_ERRNO));
+ else
+#endif
+#if defined(LWS_WITH_IPV6)
+ port = (sin.ss_family == AF_INET6) ?
+ ntohs(((struct sockaddr_in6 *) &sin)->sin6_port) :
+ ntohs(((struct sockaddr_in *) &sin)->sin_port);
+#else
+ {
+ struct sockaddr_in sain;
+ memcpy(&sain, &sin, sizeof(sain));
+ port = ntohs(sain.sin_port);
+ }
+#endif
+
+ return port;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_get_vhost_listen_port(struct lws_vhost *vhost)
+{
+ return vhost->listen_port;
+}
+
+#if defined(LWS_WITH_IPV6)
+LWS_EXTERN unsigned long
+lws_get_addr_scope(const char *ipaddr)
+{
+ unsigned long scope = 0;
+
+#ifndef WIN32
+ struct ifaddrs *addrs, *addr;
+ char ip[NI_MAXHOST];
+ unsigned int i;
+
+ getifaddrs(&addrs);
+ for (addr = addrs; addr; addr = addr->ifa_next) {
+ if (!addr->ifa_addr ||
+ addr->ifa_addr->sa_family != AF_INET6)
+ continue;
+
+ getnameinfo(addr->ifa_addr,
+ sizeof(struct sockaddr_in6),
+ ip, sizeof(ip),
+ NULL, 0, NI_NUMERICHOST);
+
+ i = 0;
+ while (ip[i])
+ if (ip[i++] == '%') {
+ ip[i - 1] = '\0';
+ break;
+ }
+
+ if (!strcmp(ip, ipaddr)) {
+ scope = if_nametoindex(addr->ifa_name);
+ break;
+ }
+ }
+ freeifaddrs(addrs);
+#else
+ PIP_ADAPTER_ADDRESSES adapter, addrs = NULL;
+ PIP_ADAPTER_UNICAST_ADDRESS addr;
+ ULONG size = 0;
+ DWORD ret;
+ struct sockaddr_in6 *sockaddr;
+ char ip[NI_MAXHOST];
+ unsigned int i;
+ int found = 0;
+
+ for (i = 0; i < 5; i++)
+ {
+ ret = GetAdaptersAddresses(AF_INET6, GAA_FLAG_INCLUDE_PREFIX,
+ NULL, addrs, &size);
+ if ((ret == NO_ERROR) || (ret == ERROR_NO_DATA)) {
+ break;
+ } else if (ret == ERROR_BUFFER_OVERFLOW)
+ {
+ if (addrs)
+ free(addrs);
+ addrs = (IP_ADAPTER_ADDRESSES *)malloc(size);
+ } else
+ {
+ if (addrs)
+ {
+ free(addrs);
+ addrs = NULL;
+ }
+ lwsl_err("Failed to get IPv6 address table (%d)", ret);
+ break;
+ }
+ }
+
+ if ((ret == NO_ERROR) && (addrs)) {
+ adapter = addrs;
+ while (adapter && !found) {
+ addr = adapter->FirstUnicastAddress;
+ while (addr && !found) {
+ if (addr->Address.lpSockaddr->sa_family ==
+ AF_INET6) {
+ sockaddr = (struct sockaddr_in6 *)
+ (addr->Address.lpSockaddr);
+
+ lws_plat_inet_ntop(sockaddr->sin6_family,
+ &sockaddr->sin6_addr,
+ ip, sizeof(ip));
+
+ if (!strcmp(ip, ipaddr)) {
+ scope = sockaddr->sin6_scope_id;
+ found = 1;
+ break;
+ }
+ }
+ addr = addr->Next;
+ }
+ adapter = adapter->Next;
+ }
+ }
+ if (addrs)
+ free(addrs);
+#endif
+
+ return scope;
+}
+#endif
+
+#if !defined(LWS_NO_SERVER)
+
+LWS_EXTERN struct lws *
+lws_create_adopt_udp(struct lws_vhost *vhost, int port, int flags,
+ const char *protocol_name, struct lws *parent_wsi)
+{
+ lws_sock_file_fd_type sock;
+ struct addrinfo h, *r, *rp;
+ struct lws *wsi = NULL;
+ char buf[16];
+ int n;
+
+ memset(&h, 0, sizeof(h));
+ h.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */
+ h.ai_socktype = SOCK_DGRAM;
+ h.ai_protocol = IPPROTO_UDP;
+ h.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
+
+ lws_snprintf(buf, sizeof(buf), "%u", port);
+ n = getaddrinfo(NULL, buf, &h, &r);
+ if (n) {
+ lwsl_info("%s: getaddrinfo error: %s\n", __func__,
+ gai_strerror(n));
+ goto bail;
+ }
+
+ for (rp = r; rp; rp = rp->ai_next) {
+ sock.sockfd = socket(rp->ai_family, rp->ai_socktype,
+ rp->ai_protocol);
+ if (sock.sockfd >= 0)
+ break;
+ }
+ if (!rp) {
+ lwsl_err("%s: unable to create INET socket\n", __func__);
+ goto bail1;
+ }
+
+ if ((flags & LWS_CAUDP_BIND) && bind(sock.sockfd, rp->ai_addr,
+#if defined(_WIN32)
+ (int)rp->ai_addrlen
+#else
+ rp->ai_addrlen
+#endif
+ ) == -1) {
+ lwsl_err("%s: bind failed\n", __func__);
+ goto bail2;
+ }
+
+ wsi = lws_adopt_descriptor_vhost(vhost, LWS_ADOPT_RAW_SOCKET_UDP, sock,
+ protocol_name, parent_wsi);
+ if (!wsi)
+ lwsl_err("%s: udp adoption failed\n", __func__);
+
+bail2:
+ if (!wsi)
+ close((int)sock.sockfd);
+bail1:
+ freeaddrinfo(r);
+
+bail:
+ return wsi;
+}
+
+#endif
+
+
+
+static const char *hex = "0123456789ABCDEF";
+
+LWS_VISIBLE LWS_EXTERN const char *
+lws_sql_purify(char *escaped, const char *string, int len)
+{
+ const char *p = string;
+ char *q = escaped;
+
+ while (*p && len-- > 2) {
+ if (*p == '\'') {
+ *q++ = '\'';
+ *q++ = '\'';
+ len --;
+ p++;
+ } else
+ *q++ = *p++;
+ }
+ *q = '\0';
+
+ return escaped;
+}
+
+LWS_VISIBLE LWS_EXTERN const char *
+lws_json_purify(char *escaped, const char *string, int len)
+{
+ const char *p = string;
+ char *q = escaped;
+
+ if (!p) {
+ escaped[0] = '\0';
+ return escaped;
+ }
+
+ while (*p && len-- > 6) {
+ if (*p == '\"' || *p == '\\' || *p < 0x20) {
+ *q++ = '\\';
+ *q++ = 'u';
+ *q++ = '0';
+ *q++ = '0';
+ *q++ = hex[((*p) >> 4) & 15];
+ *q++ = hex[(*p) & 15];
+ len -= 5;
+ p++;
+ } else
+ *q++ = *p++;
+ }
+ *q = '\0';
+
+ return escaped;
+}
+
+LWS_VISIBLE LWS_EXTERN void
+lws_filename_purify_inplace(char *filename)
+{
+ while (*filename) {
+
+ if (*filename == '.' && filename[1] == '.') {
+ *filename = '_';
+ filename[1] = '_';
+ }
+
+ if (*filename == ':' ||
+ *filename == '/' ||
+ *filename == '\\' ||
+ *filename == '$' ||
+ *filename == '%')
+ *filename = '_';
+
+ filename++;
+ }
+}
+
+LWS_VISIBLE LWS_EXTERN const char *
+lws_urlencode(char *escaped, const char *string, int len)
+{
+ const char *p = string;
+ char *q = escaped;
+
+ while (*p && len-- > 3) {
+ if (*p == ' ') {
+ *q++ = '+';
+ p++;
+ continue;
+ }
+ if ((*p >= '0' && *p <= '9') ||
+ (*p >= 'A' && *p <= 'Z') ||
+ (*p >= 'a' && *p <= 'z')) {
+ *q++ = *p++;
+ continue;
+ }
+ *q++ = '%';
+ *q++ = hex[(*p >> 4) & 0xf];
+ *q++ = hex[*p & 0xf];
+
+ len -= 2;
+ p++;
+ }
+ *q = '\0';
+
+ return escaped;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_urldecode(char *string, const char *escaped, int len)
+{
+ int state = 0, n;
+ char sum = 0;
+
+ while (*escaped && len) {
+ switch (state) {
+ case 0:
+ if (*escaped == '%') {
+ state++;
+ escaped++;
+ continue;
+ }
+ if (*escaped == '+') {
+ escaped++;
+ *string++ = ' ';
+ len--;
+ continue;
+ }
+ *string++ = *escaped++;
+ len--;
+ break;
+ case 1:
+ n = char_to_hex(*escaped);
+ if (n < 0)
+ return -1;
+ escaped++;
+ sum = n << 4;
+ state++;
+ break;
+
+ case 2:
+ n = char_to_hex(*escaped);
+ if (n < 0)
+ return -1;
+ escaped++;
+ *string++ = sum | n;
+ len--;
+ state = 0;
+ break;
+ }
+
+ }
+ *string = '\0';
+
+ return 0;
+}
+
+LWS_VISIBLE LWS_EXTERN int
+lws_finalize_startup(struct lws_context *context)
+{
+ struct lws_context_creation_info info;
+
+ info.uid = context->uid;
+ info.gid = context->gid;
+
+#if defined(LWS_HAVE_SYS_CAPABILITY_H) && defined(LWS_HAVE_LIBCAP)
+ memcpy(info.caps, context->caps, sizeof(info.caps));
+ info.count_caps = context->count_caps;
+#endif
+
+ if (lws_check_opt(context->options, LWS_SERVER_OPTION_EXPLICIT_VHOSTS))
+ lws_plat_drop_app_privileges(&info);
+
+ return 0;
+}
+
+int
+lws_snprintf(char *str, size_t size, const char *format, ...)
+{
+ va_list ap;
+ int n;
+
+ if (!size)
+ return 0;
+
+ va_start(ap, format);
+ n = vsnprintf(str, size, format, ap);
+ va_end(ap);
+
+ if (n >= (int)size)
+ return (int)size;
+
+ return n;
+}
+
+char *
+lws_strncpy(char *dest, const char *src, size_t size)
+{
+ strncpy(dest, src, size - 1);
+ dest[size - 1] = '\0';
+
+ return dest;
+}
+
+
+LWS_VISIBLE LWS_EXTERN int
+lws_is_cgi(struct lws *wsi) {
+#ifdef LWS_WITH_CGI
+ return !!wsi->http.cgi;
+#else
+ return 0;
+#endif
+}
+
+const struct lws_protocol_vhost_options *
+lws_pvo_search(const struct lws_protocol_vhost_options *pvo, const char *name)
+{
+ while (pvo) {
+ if (!strcmp(pvo->name, name))
+ break;
+
+ pvo = pvo->next;
+ }
+
+ return pvo;
+}
+
+void
+lws_sum_stats(const struct lws_context *ctx, struct lws_conn_stats *cs)
+{
+ const struct lws_vhost *vh = ctx->vhost_list;
+
+ while (vh) {
+
+ cs->rx += vh->conn_stats.rx;
+ cs->tx += vh->conn_stats.tx;
+ cs->h1_conn += vh->conn_stats.h1_conn;
+ cs->h1_trans += vh->conn_stats.h1_trans;
+ cs->h2_trans += vh->conn_stats.h2_trans;
+ cs->ws_upg += vh->conn_stats.ws_upg;
+ cs->h2_upg += vh->conn_stats.h2_upg;
+ cs->h2_alpn += vh->conn_stats.h2_alpn;
+ cs->h2_subs += vh->conn_stats.h2_subs;
+ cs->rejected += vh->conn_stats.rejected;
+
+ vh = vh->vhost_next;
+ }
+}
+
+const char *
+lws_cmdline_option(int argc, const char **argv, const char *val)
+{
+ int n = (int)strlen(val), c = argc;
+
+ while (--c > 0) {
+
+ if (!strncmp(argv[c], val, n)) {
+ if (!*(argv[c] + n) && c < argc - 1) {
+ /* coverity treats unchecked argv as "tainted" */
+ if (!argv[c + 1] || strlen(argv[c + 1]) > 1024)
+ return NULL;
+ return argv[c + 1];
+ }
+
+ return argv[c] + n;
+ }
+ }
+
+ return NULL;
+}
+
+#ifdef LWS_WITH_SERVER_STATUS
+
+LWS_EXTERN int
+lws_json_dump_vhost(const struct lws_vhost *vh, char *buf, int len)
+{
+#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
+ static const char * const prots[] = {
+ "http://",
+ "https://",
+ "file://",
+ "cgi://",
+ ">http://",
+ ">https://",
+ "callback://"
+ };
+#endif
+ char *orig = buf, *end = buf + len - 1, first = 1;
+ int n = 0;
+
+ if (len < 100)
+ return 0;
+
+ buf += lws_snprintf(buf, end - buf,
+ "{\n \"name\":\"%s\",\n"
+ " \"port\":\"%d\",\n"
+ " \"use_ssl\":\"%d\",\n"
+ " \"sts\":\"%d\",\n"
+ " \"rx\":\"%llu\",\n"
+ " \"tx\":\"%llu\",\n"
+ " \"h1_conn\":\"%lu\",\n"
+ " \"h1_trans\":\"%lu\",\n"
+ " \"h2_trans\":\"%lu\",\n"
+ " \"ws_upg\":\"%lu\",\n"
+ " \"rejected\":\"%lu\",\n"
+ " \"h2_upg\":\"%lu\",\n"
+ " \"h2_alpn\":\"%lu\",\n"
+ " \"h2_subs\":\"%lu\""
+ ,
+ vh->name, vh->listen_port,
+#if defined(LWS_WITH_TLS)
+ vh->tls.use_ssl & LCCSCF_USE_SSL,
+#else
+ 0,
+#endif
+ !!(vh->options & LWS_SERVER_OPTION_STS),
+ vh->conn_stats.rx, vh->conn_stats.tx,
+ vh->conn_stats.h1_conn,
+ vh->conn_stats.h1_trans,
+ vh->conn_stats.h2_trans,
+ vh->conn_stats.ws_upg,
+ vh->conn_stats.rejected,
+ vh->conn_stats.h2_upg,
+ vh->conn_stats.h2_alpn,
+ vh->conn_stats.h2_subs
+ );
+#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
+ if (vh->http.mount_list) {
+ const struct lws_http_mount *m = vh->http.mount_list;
+
+ buf += lws_snprintf(buf, end - buf, ",\n \"mounts\":[");
+ while (m) {
+ if (!first)
+ buf += lws_snprintf(buf, end - buf, ",");
+ buf += lws_snprintf(buf, end - buf,
+ "\n {\n \"mountpoint\":\"%s\",\n"
+ " \"origin\":\"%s%s\",\n"
+ " \"cache_max_age\":\"%d\",\n"
+ " \"cache_reuse\":\"%d\",\n"
+ " \"cache_revalidate\":\"%d\",\n"
+ " \"cache_intermediaries\":\"%d\"\n"
+ ,
+ m->mountpoint,
+ prots[m->origin_protocol],
+ m->origin,
+ m->cache_max_age,
+ m->cache_reusable,
+ m->cache_revalidate,
+ m->cache_intermediaries);
+ if (m->def)
+ buf += lws_snprintf(buf, end - buf,
+ ",\n \"default\":\"%s\"",
+ m->def);
+ buf += lws_snprintf(buf, end - buf, "\n }");
+ first = 0;
+ m = m->mount_next;
+ }
+ buf += lws_snprintf(buf, end - buf, "\n ]");
+ }
+#endif
+ if (vh->protocols) {
+ n = 0;
+ first = 1;
+
+ buf += lws_snprintf(buf, end - buf, ",\n \"ws-protocols\":[");
+ while (n < vh->count_protocols) {
+ if (!first)
+ buf += lws_snprintf(buf, end - buf, ",");
+ buf += lws_snprintf(buf, end - buf,
+ "\n {\n \"%s\":{\n"
+ " \"status\":\"ok\"\n }\n }"
+ ,
+ vh->protocols[n].name);
+ first = 0;
+ n++;
+ }
+ buf += lws_snprintf(buf, end - buf, "\n ]");
+ }
+
+ buf += lws_snprintf(buf, end - buf, "\n}");
+
+ return buf - orig;
+}
+
+
+LWS_EXTERN LWS_VISIBLE int
+lws_json_dump_context(const struct lws_context *context, char *buf, int len,
+ int hide_vhosts)
+{
+ char *orig = buf, *end = buf + len - 1, first = 1;
+ const struct lws_vhost *vh = context->vhost_list;
+ const struct lws_context_per_thread *pt;
+ time_t t = time(NULL);
+ int n, listening = 0, cgi_count = 0;
+ struct lws_conn_stats cs;
+ double d = 0;
+#ifdef LWS_WITH_CGI
+ struct lws_cgi * const *pcgi;
+#endif
+
+#ifdef LWS_WITH_LIBUV
+ uv_uptime(&d);
+#endif
+
+ buf += lws_snprintf(buf, end - buf, "{ "
+ "\"version\":\"%s\",\n"
+ "\"uptime\":\"%ld\",\n",
+ lws_get_library_version(),
+ (long)d);
+
+#ifdef LWS_HAVE_GETLOADAVG
+ {
+ double d[3];
+ int m;
+
+ m = getloadavg(d, 3);
+ for (n = 0; n < m; n++) {
+ buf += lws_snprintf(buf, end - buf,
+ "\"l%d\":\"%.2f\",\n",
+ n + 1, d[n]);
+ }
+ }
+#endif
+
+ buf += lws_snprintf(buf, end - buf, "\"contexts\":[\n");
+
+ buf += lws_snprintf(buf, end - buf, "{ "
+ "\"context_uptime\":\"%ld\",\n"
+ "\"cgi_spawned\":\"%d\",\n"
+ "\"pt_fd_max\":\"%d\",\n"
+ "\"ah_pool_max\":\"%d\",\n"
+ "\"deprecated\":\"%d\",\n"
+ "\"wsi_alive\":\"%d\",\n",
+ (unsigned long)(t - context->time_up),
+ context->count_cgi_spawned,
+ context->fd_limit_per_thread,
+ context->max_http_header_pool,
+ context->deprecated,
+ context->count_wsi_allocated);
+
+ buf += lws_snprintf(buf, end - buf, "\"pt\":[\n ");
+ for (n = 0; n < context->count_threads; n++) {
+ pt = &context->pt[n];
+ if (n)
+ buf += lws_snprintf(buf, end - buf, ",");
+ buf += lws_snprintf(buf, end - buf,
+ "\n {\n"
+ " \"fds_count\":\"%d\",\n"
+ " \"ah_pool_inuse\":\"%d\",\n"
+ " \"ah_wait_list\":\"%d\"\n"
+ " }",
+ pt->fds_count,
+ pt->http.ah_count_in_use,
+ pt->http.ah_wait_list_length);
+ }
+
+ buf += lws_snprintf(buf, end - buf, "]");
+
+ buf += lws_snprintf(buf, end - buf, ", \"vhosts\":[\n ");
+
+ first = 1;
+ vh = context->vhost_list;
+ listening = 0;
+ cs = context->conn_stats;
+ lws_sum_stats(context, &cs);
+ while (vh) {
+
+ if (!hide_vhosts) {
+ if (!first)
+ if(buf != end)
+ *buf++ = ',';
+ buf += lws_json_dump_vhost(vh, buf, end - buf);
+ first = 0;
+ }
+ if (vh->lserv_wsi)
+ listening++;
+ vh = vh->vhost_next;
+ }
+
+ buf += lws_snprintf(buf, end - buf,
+ "],\n\"listen_wsi\":\"%d\",\n"
+ " \"rx\":\"%llu\",\n"
+ " \"tx\":\"%llu\",\n"
+ " \"h1_conn\":\"%lu\",\n"
+ " \"h1_trans\":\"%lu\",\n"
+ " \"h2_trans\":\"%lu\",\n"
+ " \"ws_upg\":\"%lu\",\n"
+ " \"rejected\":\"%lu\",\n"
+ " \"h2_alpn\":\"%lu\",\n"
+ " \"h2_subs\":\"%lu\",\n"
+ " \"h2_upg\":\"%lu\"",
+ listening, cs.rx, cs.tx,
+ cs.h1_conn,
+ cs.h1_trans,
+ cs.h2_trans,
+ cs.ws_upg,
+ cs.rejected,
+ cs.h2_alpn,
+ cs.h2_subs,
+ cs.h2_upg);
+
+#ifdef LWS_WITH_CGI
+ for (n = 0; n < context->count_threads; n++) {
+ pt = &context->pt[n];
+ pcgi = &pt->http.cgi_list;
+
+ while (*pcgi) {
+ pcgi = &(*pcgi)->cgi_list;
+
+ cgi_count++;
+ }
+ }
+#endif
+ buf += lws_snprintf(buf, end - buf, ",\n \"cgi_alive\":\"%d\"\n ",
+ cgi_count);
+
+ buf += lws_snprintf(buf, end - buf, "}");
+
+
+ buf += lws_snprintf(buf, end - buf, "]}\n ");
+
+ return buf - orig;
+}
+
+#endif
+
+#if defined(LWS_WITH_STATS)
+
+LWS_VISIBLE LWS_EXTERN uint64_t
+lws_stats_get(struct lws_context *context, int index)
+{
+ if (index >= LWSSTATS_SIZE)
+ return 0;
+
+ return context->lws_stats[index];
+}
+
+LWS_VISIBLE LWS_EXTERN void
+lws_stats_log_dump(struct lws_context *context)
+{
+ struct lws_vhost *v = context->vhost_list;
+ int n, m;
+
+ (void)m;
+
+ if (!context->updated)
+ return;
+
+ context->updated = 0;
+
+ lwsl_notice("\n");
+ lwsl_notice("LWS internal statistics dump ----->\n");
+ lwsl_notice("LWSSTATS_C_CONNECTIONS: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_CONNECTIONS));
+ lwsl_notice("LWSSTATS_C_API_CLOSE: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_API_CLOSE));
+ lwsl_notice("LWSSTATS_C_API_READ: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_API_READ));
+ lwsl_notice("LWSSTATS_C_API_LWS_WRITE: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_API_LWS_WRITE));
+ lwsl_notice("LWSSTATS_C_API_WRITE: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_API_WRITE));
+ lwsl_notice("LWSSTATS_C_WRITE_PARTIALS: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_WRITE_PARTIALS));
+ lwsl_notice("LWSSTATS_C_WRITEABLE_CB_REQ: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_WRITEABLE_CB_REQ));
+ lwsl_notice("LWSSTATS_C_WRITEABLE_CB_EFF_REQ: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_WRITEABLE_CB_EFF_REQ));
+ lwsl_notice("LWSSTATS_C_WRITEABLE_CB: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_WRITEABLE_CB));
+ lwsl_notice("LWSSTATS_C_SSL_CONNECTIONS_ACCEPT_SPIN: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_SSL_CONNECTIONS_ACCEPT_SPIN));
+ lwsl_notice("LWSSTATS_C_SSL_CONNECTIONS_FAILED: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_SSL_CONNECTIONS_FAILED));
+ lwsl_notice("LWSSTATS_C_SSL_CONNECTIONS_ACCEPTED: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_SSL_CONNECTIONS_ACCEPTED));
+ lwsl_notice("LWSSTATS_C_SSL_CONNS_HAD_RX: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_SSL_CONNS_HAD_RX));
+ lwsl_notice("LWSSTATS_C_PEER_LIMIT_AH_DENIED: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_PEER_LIMIT_AH_DENIED));
+ lwsl_notice("LWSSTATS_C_PEER_LIMIT_WSI_DENIED: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_PEER_LIMIT_WSI_DENIED));
+
+ lwsl_notice("LWSSTATS_C_TIMEOUTS: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_TIMEOUTS));
+ lwsl_notice("LWSSTATS_C_SERVICE_ENTRY: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_C_SERVICE_ENTRY));
+ lwsl_notice("LWSSTATS_B_READ: %8llu\n",
+ (unsigned long long)lws_stats_get(context, LWSSTATS_B_READ));
+ lwsl_notice("LWSSTATS_B_WRITE: %8llu\n",
+ (unsigned long long)lws_stats_get(context, LWSSTATS_B_WRITE));
+ lwsl_notice("LWSSTATS_B_PARTIALS_ACCEPTED_PARTS: %8llu\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_B_PARTIALS_ACCEPTED_PARTS));
+ lwsl_notice("LWSSTATS_MS_SSL_CONNECTIONS_ACCEPTED_DELAY: %8llums\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_MS_SSL_CONNECTIONS_ACCEPTED_DELAY) / 1000);
+ if (lws_stats_get(context, LWSSTATS_C_SSL_CONNECTIONS_ACCEPTED))
+ lwsl_notice(" Avg accept delay: %8llums\n",
+ (unsigned long long)(lws_stats_get(context,
+ LWSSTATS_MS_SSL_CONNECTIONS_ACCEPTED_DELAY) /
+ lws_stats_get(context,
+ LWSSTATS_C_SSL_CONNECTIONS_ACCEPTED)) / 1000);
+ lwsl_notice("LWSSTATS_MS_SSL_RX_DELAY: %8llums\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_MS_SSL_RX_DELAY) / 1000);
+ if (lws_stats_get(context, LWSSTATS_C_SSL_CONNS_HAD_RX))
+ lwsl_notice(" Avg accept-rx delay: %8llums\n",
+ (unsigned long long)(lws_stats_get(context,
+ LWSSTATS_MS_SSL_RX_DELAY) /
+ lws_stats_get(context,
+ LWSSTATS_C_SSL_CONNS_HAD_RX)) / 1000);
+
+ lwsl_notice("LWSSTATS_MS_WRITABLE_DELAY: %8lluus\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_MS_WRITABLE_DELAY));
+ lwsl_notice("LWSSTATS_MS_WORST_WRITABLE_DELAY: %8lluus\n",
+ (unsigned long long)lws_stats_get(context,
+ LWSSTATS_MS_WORST_WRITABLE_DELAY));
+ if (lws_stats_get(context, LWSSTATS_C_WRITEABLE_CB))
+ lwsl_notice(" Avg writable delay: %8lluus\n",
+ (unsigned long long)(lws_stats_get(context,
+ LWSSTATS_MS_WRITABLE_DELAY) /
+ lws_stats_get(context, LWSSTATS_C_WRITEABLE_CB)));
+ lwsl_notice("Simultaneous SSL restriction: %8d/%d\n",
+ context->simultaneous_ssl,
+ context->simultaneous_ssl_restriction);
+
+ lwsl_notice("Live wsi: %8d\n",
+ context->count_wsi_allocated);
+
+ context->updated = 1;
+
+ while (v) {
+ if (v->lserv_wsi &&
+ v->lserv_wsi->position_in_fds_table != LWS_NO_FDS_POS) {
+
+ struct lws_context_per_thread *pt =
+ &context->pt[(int)v->lserv_wsi->tsi];
+ struct lws_pollfd *pfd;
+
+ pfd = &pt->fds[v->lserv_wsi->position_in_fds_table];
+
+ lwsl_notice(" Listen port %d actual POLLIN: %d\n",
+ v->listen_port,
+ (int)pfd->events & LWS_POLLIN);
+ }
+
+ v = v->vhost_next;
+ }
+
+ for (n = 0; n < context->count_threads; n++) {
+ struct lws_context_per_thread *pt = &context->pt[n];
+ struct lws *wl;
+ int m = 0;
+
+ lwsl_notice("PT %d\n", n + 1);
+
+ lws_pt_lock(pt, __func__);
+
+ lwsl_notice(" AH in use / max: %d / %d\n",
+ pt->http.ah_count_in_use,
+ context->max_http_header_pool);
+
+ wl = pt->http.ah_wait_list;
+ while (wl) {
+ m++;
+ wl = wl->http.ah_wait_list;
+ }
+
+ lwsl_notice(" AH wait list count / actual: %d / %d\n",
+ pt->http.ah_wait_list_length, m);
+
+ lws_pt_unlock(pt);
+ }
+
+#if defined(LWS_WITH_PEER_LIMITS)
+ m = 0;
+ for (n = 0; n < (int)context->pl_hash_elements; n++) {
+ lws_start_foreach_llp(struct lws_peer **, peer,
+ context->pl_hash_table[n]) {
+ m++;
+ } lws_end_foreach_llp(peer, next);
+ }
+
+ lwsl_notice(" Peers: total active %d\n", m);
+ if (m > 10) {
+ m = 10;
+ lwsl_notice(" (showing 10 peers only)\n");
+ }
+
+ if (m) {
+ for (n = 0; n < (int)context->pl_hash_elements; n++) {
+ char buf[72];
+
+ lws_start_foreach_llp(struct lws_peer **, peer,
+ context->pl_hash_table[n]) {
+ struct lws_peer *df = *peer;
+
+ if (!lws_plat_inet_ntop(df->af, df->addr, buf,
+ sizeof(buf) - 1))
+ strcpy(buf, "unknown");
+#if defined(LWS_ROLE_H1) || defined(LWS_ROLE_H2)
+ lwsl_notice(" peer %s: count wsi: %d, count ah: %d\n",
+ buf, df->count_wsi,
+ df->http.count_ah);
+#else
+ lwsl_notice(" peer %s: count wsi: %d\n",
+ buf, df->count_wsi);
+#endif
+
+ if (!--m)
+ break;
+ } lws_end_foreach_llp(peer, next);
+ }
+ }
+#endif
+
+ lwsl_notice("\n");
+}
+
+void
+lws_stats_atomic_bump(struct lws_context * context,
+ struct lws_context_per_thread *pt, int index, uint64_t bump)
+{
+ lws_pt_stats_lock(pt);
+ context->lws_stats[index] += bump;
+ if (index != LWSSTATS_C_SERVICE_ENTRY)
+ context->updated = 1;
+ lws_pt_stats_unlock(pt);
+}
+
+void
+lws_stats_atomic_max(struct lws_context * context,
+ struct lws_context_per_thread *pt, int index, uint64_t val)
+{
+ lws_pt_stats_lock(pt);
+ if (val > context->lws_stats[index]) {
+ context->lws_stats[index] = val;
+ context->updated = 1;
+ }
+ lws_pt_stats_unlock(pt);
+}
+
+#endif
+