Merge pull request #14888 from Faless/websocket

Websocket module

6 files changed, 1797 insertions, 0 deletions

diff --git a/thirdparty/lws/misc/base64-decode.c b/thirdparty/lws/misc/base64-decode.c
new file mode 100644
index 0000000000..c8f11d21b8
--- /dev/null
+++ b/thirdparty/lws/misc/base64-decode.c
@@ -0,0 +1,206 @@
+/*
+ * This code originally came from here
+ *
+ * http://base64.sourceforge.net/b64.c
+ *
+ * with the following license:
+ *
+ * LICENCE:        Copyright (c) 2001 Bob Trower, Trantor Standard Systems Inc.
+ *
+ *                Permission is hereby granted, free of charge, to any person
+ *                obtaining a copy of this software and associated
+ *                documentation files (the "Software"), to deal in the
+ *                Software without restriction, including without limitation
+ *                the rights to use, copy, modify, merge, publish, distribute,
+ *                sublicense, and/or sell copies of the Software, and to
+ *                permit persons to whom the Software is furnished to do so,
+ *                subject to the following conditions:
+ *
+ *                The above copyright notice and this permission notice shall
+ *                be included in all copies or substantial portions of the
+ *                Software.
+ *
+ *                THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+ *                KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ *                WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ *                PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+ *                OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ *                OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ *                OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ *                SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * VERSION HISTORY:
+ *               Bob Trower 08/04/01 -- Create Version 0.00.00B
+ *
+ * I cleaned it up quite a bit to match the (linux kernel) style of the rest
+ * of libwebsockets; this version is under LGPL2.1 + SLE like the rest of lws
+ * since he explicitly allows sublicensing, but I give the URL above so you can
+ * get the original with Bob's super-liberal terms directly if you prefer.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "private-libwebsockets.h"
+
+static const char encode[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+			     "abcdefghijklmnopqrstuvwxyz0123456789+/";
+static const char decode[] = "|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW"
+			     "$$$$$$XYZ[\\]^_`abcdefghijklmnopq";
+
+LWS_VISIBLE int
+lws_b64_encode_string(const char *in, int in_len, char *out, int out_size)
+{
+	unsigned char triple[3];
+	int i;
+	int len;
+	int line = 0;
+	int done = 0;
+
+	while (in_len) {
+		len = 0;
+		for (i = 0; i < 3; i++) {
+			if (in_len) {
+				triple[i] = *in++;
+				len++;
+				in_len--;
+			} else
+				triple[i] = 0;
+		}
+
+		if (done + 4 >= out_size)
+			return -1;
+
+		*out++ = encode[triple[0] >> 2];
+		*out++ = encode[((triple[0] & 0x03) << 4) |
+					     ((triple[1] & 0xf0) >> 4)];
+		*out++ = (len > 1 ? encode[((triple[1] & 0x0f) << 2) |
+					     ((triple[2] & 0xc0) >> 6)] : '=');
+		*out++ = (len > 2 ? encode[triple[2] & 0x3f] : '=');
+
+		done += 4;
+		line += 4;
+	}
+
+	if (done + 1 >= out_size)
+		return -1;
+
+	*out++ = '\0';
+
+	return done;
+}
+
+/*
+ * returns length of decoded string in out, or -1 if out was too small
+ * according to out_size
+ */
+
+LWS_VISIBLE int
+lws_b64_decode_string(const char *in, char *out, int out_size)
+{
+	int len, i, c = 0, done = 0;
+	unsigned char v, quad[4];
+
+	while (*in) {
+
+		len = 0;
+		for (i = 0; i < 4 && *in; i++) {
+
+			v = 0;
+			c = 0;
+			while (*in && !v) {
+				c = v = *in++;
+				v = (v < 43 || v > 122) ? 0 : decode[v - 43];
+				if (v)
+					v = (v == '$') ? 0 : v - 61;
+			}
+			if (c) {
+				len++;
+				if (v)
+					quad[i] = v - 1;
+			} else
+				quad[i] = 0;
+		}
+
+		if (out_size < (done + len - 1))
+			/* out buffer is too small */
+			return -1;
+
+		/*
+		 * "The '==' sequence indicates that the last group contained
+		 * only one byte, and '=' indicates that it contained two
+		 * bytes." (wikipedia)
+		 */
+
+		if (!*in && c == '=')
+			len--;
+
+		if (len >= 2)
+			*out++ = quad[0] << 2 | quad[1] >> 4;
+		if (len >= 3)
+			*out++ = quad[1] << 4 | quad[2] >> 2;
+		if (len >= 4)
+			*out++ = ((quad[2] << 6) & 0xc0) | quad[3];
+
+		done += len - 1;
+	}
+
+	if (done + 1 >= out_size)
+		return -1;
+
+	*out = '\0';
+
+	return done;
+}
+
+#if 0
+int
+lws_b64_selftest(void)
+{
+	char buf[64];
+	unsigned int n,  r = 0;
+	unsigned int test;
+	/* examples from https://en.wikipedia.org/wiki/Base64 */
+	static const char * const plaintext[] = {
+		"any carnal pleasure.",
+		"any carnal pleasure",
+		"any carnal pleasur",
+		"any carnal pleasu",
+		"any carnal pleas",
+		"Admin:kloikloi"
+	};
+	static const char * const coded[] = {
+		"YW55IGNhcm5hbCBwbGVhc3VyZS4=",
+		"YW55IGNhcm5hbCBwbGVhc3VyZQ==",
+		"YW55IGNhcm5hbCBwbGVhc3Vy",
+		"YW55IGNhcm5hbCBwbGVhc3U=",
+		"YW55IGNhcm5hbCBwbGVhcw==",
+		"QWRtaW46a2xvaWtsb2k="
+	};
+
+	for (test = 0; test < sizeof plaintext / sizeof(plaintext[0]); test++) {
+
+		buf[sizeof(buf) - 1] = '\0';
+		n = lws_b64_encode_string(plaintext[test],
+				      strlen(plaintext[test]), buf, sizeof buf);
+		if (n != strlen(coded[test]) || strcmp(buf, coded[test])) {
+			lwsl_err("Failed lws_b64 encode selftest "
+					   "%d result '%s' %d\n", test, buf, n);
+			r = -1;
+		}
+
+		buf[sizeof(buf) - 1] = '\0';
+		n = lws_b64_decode_string(coded[test], buf, sizeof buf);
+		if (n != strlen(plaintext[test]) ||
+						 strcmp(buf, plaintext[test])) {
+			lwsl_err("Failed lws_b64 decode selftest "
+				 "%d result '%s' / '%s', %d / %d\n",
+				 test, buf, plaintext[test], n, strlen(plaintext[test]));
+			r = -1;
+		}
+	}
+
+	lwsl_notice("Base 64 selftests passed\n");
+
+	return r;
+}
+#endif
diff --git a/thirdparty/lws/misc/getifaddrs.c b/thirdparty/lws/misc/getifaddrs.c
new file mode 100644
index 0000000000..4f42ab4595
--- /dev/null
+++ b/thirdparty/lws/misc/getifaddrs.c
@@ -0,0 +1,270 @@
+/*
+ * Copyright (c) 2000 - 2001 Kungliga Tekniska H�gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * originally downloaded from
+ *
+ * http://ftp.uninett.no/pub/OpenBSD/src/kerberosV/src/lib/roken/getifaddrs.c
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include "private-libwebsockets.h"
+
+#ifdef LWS_HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
+
+#ifdef LWS_HAVE_NETINET_IN6_VAR_H
+#include <netinet/in6_var.h>
+#endif
+
+#ifndef max
+#define max(a, b) ((a) > (b) ? (a) : (b))
+#endif
+
+#include "getifaddrs.h"
+
+static int
+getifaddrs2(struct ifaddrs **ifap, int af, int siocgifconf, int siocgifflags,
+	    size_t ifreq_sz)
+{
+	int ret;
+	int fd;
+	size_t buf_size;
+	char *buf;
+	struct ifconf ifconf;
+	char *p;
+	size_t sz;
+	struct sockaddr sa_zero;
+	struct ifreq *ifr;
+	struct ifaddrs *start,  **end = &start;
+
+	buf = NULL;
+
+	memset(&sa_zero, 0, sizeof(sa_zero));
+	fd = socket(af, SOCK_DGRAM, 0);
+	if (fd < 0)
+		return -1;
+
+	buf_size = 8192;
+	for (;;) {
+		buf = lws_zalloc(buf_size, "getifaddrs2");
+		if (buf == NULL) {
+			ret = ENOMEM;
+			goto error_out;
+		}
+		ifconf.ifc_len = buf_size;
+		ifconf.ifc_buf = buf;
+
+		/*
+		 * Solaris returns EINVAL when the buffer is too small.
+		 */
+		if (ioctl(fd, siocgifconf, &ifconf) < 0 && errno != EINVAL) {
+			ret = errno;
+			goto error_out;
+		}
+		/*
+		 * Can the difference between a full and a overfull buf
+		 * be determined?
+		 */
+
+		if (ifconf.ifc_len < (int)buf_size)
+			break;
+		lws_free(buf);
+		buf_size *= 2;
+	}
+
+	for (p = ifconf.ifc_buf; p < ifconf.ifc_buf + ifconf.ifc_len; p += sz) {
+		struct ifreq ifreq;
+		struct sockaddr *sa;
+		size_t salen;
+
+		ifr = (struct ifreq *)p;
+		sa  = &ifr->ifr_addr;
+
+		sz = ifreq_sz;
+		salen = sizeof(struct sockaddr);
+#ifdef LWS_HAVE_STRUCT_SOCKADDR_SA_LEN
+		salen = sa->sa_len;
+		sz = max(sz, sizeof(ifr->ifr_name) + sa->sa_len);
+#endif
+#ifdef SA_LEN
+		salen = SA_LEN(sa);
+		sz = max(sz, sizeof(ifr->ifr_name) + SA_LEN(sa));
+#endif
+		memset(&ifreq, 0, sizeof(ifreq));
+		memcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifr->ifr_name));
+
+		if (ioctl(fd, siocgifflags, &ifreq) < 0) {
+			ret = errno;
+			goto error_out;
+		}
+
+		*end = lws_malloc(sizeof(**end), "getifaddrs");
+
+		(*end)->ifa_next = NULL;
+		(*end)->ifa_name = strdup(ifr->ifr_name);
+		(*end)->ifa_flags = ifreq.ifr_flags;
+		(*end)->ifa_addr = lws_malloc(salen, "getifaddrs");
+		memcpy((*end)->ifa_addr, sa, salen);
+		(*end)->ifa_netmask = NULL;
+
+#if 0
+		/* fix these when we actually need them */
+		if (ifreq.ifr_flags & IFF_BROADCAST) {
+			(*end)->ifa_broadaddr =
+				lws_malloc(sizeof(ifr->ifr_broadaddr), "getifaddrs");
+			memcpy((*end)->ifa_broadaddr, &ifr->ifr_broadaddr,
+						    sizeof(ifr->ifr_broadaddr));
+		} else if (ifreq.ifr_flags & IFF_POINTOPOINT) {
+			(*end)->ifa_dstaddr =
+				lws_malloc(sizeof(ifr->ifr_dstaddr), "getifaddrs");
+			memcpy((*end)->ifa_dstaddr, &ifr->ifr_dstaddr,
+						      sizeof(ifr->ifr_dstaddr));
+		} else
+			(*end)->ifa_dstaddr = NULL;
+#else
+		(*end)->ifa_dstaddr = NULL;
+#endif
+		(*end)->ifa_data = NULL;
+
+		end = &(*end)->ifa_next;
+
+	}
+	*ifap = start;
+	close(fd);
+	lws_free(buf);
+	return 0;
+
+error_out:
+	close(fd);
+	lws_free(buf);
+	errno = ret;
+
+	return -1;
+}
+
+int
+getifaddrs(struct ifaddrs **ifap)
+{
+	int ret = -1;
+	errno = ENXIO;
+#if defined(AF_INET6) && defined(SIOCGIF6CONF) && defined(SIOCGIF6FLAGS)
+	if (ret)
+		ret = getifaddrs2(ifap, AF_INET6, SIOCGIF6CONF, SIOCGIF6FLAGS,
+			   sizeof(struct in6_ifreq));
+#endif
+#if defined(LWS_HAVE_IPV6) && defined(SIOCGIFCONF)
+	if (ret)
+		ret = getifaddrs2(ifap, AF_INET6, SIOCGIFCONF, SIOCGIFFLAGS,
+			   sizeof(struct ifreq));
+#endif
+#if defined(AF_INET) && defined(SIOCGIFCONF) && defined(SIOCGIFFLAGS)
+	if (ret)
+		ret = getifaddrs2(ifap, AF_INET, SIOCGIFCONF, SIOCGIFFLAGS,
+			   sizeof(struct ifreq));
+#endif
+	return ret;
+}
+
+void
+freeifaddrs(struct ifaddrs *ifp)
+{
+	struct ifaddrs *p, *q;
+
+	for (p = ifp; p; ) {
+		lws_free(p->ifa_name);
+		lws_free(p->ifa_addr);
+		lws_free(p->ifa_dstaddr);
+		lws_free(p->ifa_netmask);
+		lws_free(p->ifa_data);
+		q = p;
+		p = p->ifa_next;
+		lws_free(q);
+	}
+}
+
+#ifdef TEST
+
+void
+print_addr(const char *s, struct sockaddr *sa)
+{
+	int i;
+	printf("  %s=%d/", s, sa->sa_family);
+#ifdef LWS_HAVE_STRUCT_SOCKADDR_SA_LEN
+	for (i = 0;
+	       i < sa->sa_len - ((lws_intptr_t)sa->sa_data - (lws_intptr_t)&sa->sa_family); i++)
+		printf("%02x", ((unsigned char *)sa->sa_data)[i]);
+#else
+	for (i = 0; i < sizeof(sa->sa_data); i++)
+		printf("%02x", ((unsigned char *)sa->sa_data)[i]);
+#endif
+	printf("\n");
+}
+
+void
+print_ifaddrs(struct ifaddrs *x)
+{
+	struct ifaddrs *p;
+
+	for (p = x; p; p = p->ifa_next) {
+		printf("%s\n", p->ifa_name);
+		printf("  flags=%x\n", p->ifa_flags);
+		if (p->ifa_addr)
+			print_addr("addr", p->ifa_addr);
+		if (p->ifa_dstaddr)
+			print_addr("dstaddr", p->ifa_dstaddr);
+		if (p->ifa_netmask)
+			print_addr("netmask", p->ifa_netmask);
+		printf("  %p\n", p->ifa_data);
+	}
+}
+
+int
+main()
+{
+	struct ifaddrs *a = NULL, *b;
+	getifaddrs2(&a, AF_INET, SIOCGIFCONF, SIOCGIFFLAGS,
+		    sizeof(struct ifreq));
+	print_ifaddrs(a);
+	printf("---\n");
+	getifaddrs(&b);
+	print_ifaddrs(b);
+	return 0;
+}
+#endif
diff --git a/thirdparty/lws/misc/getifaddrs.h b/thirdparty/lws/misc/getifaddrs.h
new file mode 100644
index 0000000000..d26670c082
--- /dev/null
+++ b/thirdparty/lws/misc/getifaddrs.h
@@ -0,0 +1,80 @@
+#ifndef LWS_HAVE_GETIFADDRS
+#define LWS_HAVE_GETIFADDRS 0
+#endif
+
+#if LWS_HAVE_GETIFADDRS
+#include <sys/types.h>
+#include <ifaddrs.h>
+#else
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Copyright (c) 2000 Kungliga Tekniska H�gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* $KTH: ifaddrs.hin,v 1.3 2000/12/11 00:01:13 assar Exp $ */
+
+#ifndef ifaddrs_h_7467027A95AD4B5C8DDD40FE7D973791
+#define ifaddrs_h_7467027A95AD4B5C8DDD40FE7D973791
+
+/*
+ * the interface is defined in terms of the fields below, and this is
+ * sometimes #define'd, so there seems to be no simple way of solving
+ * this and this seemed the best. */
+
+#undef ifa_dstaddr
+
+struct ifaddrs {
+	struct ifaddrs *ifa_next;
+	char *ifa_name;
+	unsigned int ifa_flags;
+	struct sockaddr *ifa_addr;
+	struct sockaddr *ifa_netmask;
+	struct sockaddr *ifa_dstaddr;
+	void *ifa_data;
+};
+
+#ifndef ifa_broadaddr
+#define ifa_broadaddr ifa_dstaddr
+#endif
+
+int getifaddrs(struct ifaddrs **);
+
+void freeifaddrs(struct ifaddrs *);
+
+#endif /* __ifaddrs_h__ */
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/thirdparty/lws/misc/lejp.c b/thirdparty/lws/misc/lejp.c
new file mode 100644
index 0000000000..5407c90f97
--- /dev/null
+++ b/thirdparty/lws/misc/lejp.c
@@ -0,0 +1,709 @@
+/*
+ * Lightweight Embedded JSON Parser
+ *
+ * Copyright (C) 2013 Andy Green <andy@warmcat.com>
+ * This code is licensed under LGPL 2.1
+ * http://www.gnu.org/licenses/lgpl-2.1.html
+ */
+
+#include <string.h>
+#include "lejp.h"
+
+#include <stdio.h>
+
+/**
+ * lejp_construct - prepare a struct lejp_ctx for use
+ *
+ * \param ctx:	pointer to your struct lejp_ctx
+ * \param callback:	your user callback which will received parsed tokens
+ * \param user:	optional user data pointer untouched by lejp
+ * \param paths:	your array of name elements you are interested in
+ * \param count_paths:	ARRAY_SIZE() of @paths
+ *
+ * Prepares your context struct for use with lejp
+ */
+
+void
+lejp_construct(struct lejp_ctx *ctx,
+	signed char (*callback)(struct lejp_ctx *ctx, char reason), void *user,
+			const char * const *paths, unsigned char count_paths)
+{
+	ctx->st[0].s = 0;
+	ctx->st[0].p = 0;
+	ctx->st[0].i = 0;
+	ctx->st[0].b = 0;
+	ctx->sp = 0;
+	ctx->ipos = 0;
+	ctx->ppos = 0;
+	ctx->path_match = 0;
+	ctx->path[0] = '\0';
+	ctx->callback = callback;
+	ctx->user = user;
+	ctx->paths = paths;
+	ctx->count_paths = count_paths;
+	ctx->line = 1;
+	ctx->callback(ctx, LEJPCB_CONSTRUCTED);
+}
+
+/**
+ * lejp_destruct - retire a previously constructed struct lejp_ctx
+ *
+ * \param ctx:	pointer to your struct lejp_ctx
+ *
+ * lejp does not perform any allocations, but since your user code might, this
+ * provides a one-time LEJPCB_DESTRUCTED callback at destruction time where
+ * you can clean up in your callback.
+ */
+
+void
+lejp_destruct(struct lejp_ctx *ctx)
+{
+	/* no allocations... just let callback know what it happening */
+	ctx->callback(ctx, LEJPCB_DESTRUCTED);
+}
+
+/**
+ * lejp_change_callback - switch to a different callback from now on
+ *
+ * \param ctx:	pointer to your struct lejp_ctx
+ * \param callback:	your user callback which will received parsed tokens
+ *
+ * This tells the old callback it was destroyed, in case you want to take any
+ * action because that callback "lost focus", then changes to the new
+ * callback and tells it first that it was constructed, and then started.
+ *
+ * Changing callback is a cheap and powerful trick to split out handlers
+ * according to information earlier in the parse.  For example you may have
+ * a JSON pair "schema" whose value defines what can be expected for the rest
+ * of the JSON.  Rather than having one huge callback for all cases, you can
+ * have an initial one looking for "schema" which then calls
+ * lejp_change_callback() to a handler specific for the schema.
+ *
+ * Notice that afterwards, you need to construct the context again anyway to
+ * parse another JSON object, and the callback is reset then to the main,
+ * schema-interpreting one.  The construction action is very lightweight.
+ */
+
+void
+lejp_change_callback(struct lejp_ctx *ctx,
+		     signed char (*callback)(struct lejp_ctx *ctx, char reason))
+{
+	ctx->callback(ctx, LEJPCB_DESTRUCTED);
+	ctx->callback = callback;
+	ctx->callback(ctx, LEJPCB_CONSTRUCTED);
+	ctx->callback(ctx, LEJPCB_START);
+}
+
+static void
+lejp_check_path_match(struct lejp_ctx *ctx)
+{
+	const char *p, *q;
+	int n;
+
+	/* we only need to check if a match is not active */
+	for (n = 0; !ctx->path_match && n < ctx->count_paths; n++) {
+		ctx->wildcount = 0;
+		p = ctx->path;
+		q = ctx->paths[n];
+		while (*p && *q) {
+			if (*q != '*') {
+				if (*p != *q)
+					break;
+				p++;
+				q++;
+				continue;
+			}
+			ctx->wild[ctx->wildcount++] = p - ctx->path;
+			q++;
+			/*
+			 * if * has something after it, match to .
+			 * if ends with *, eat everything.
+			 * This implies match sequences must be ordered like
+			 *  x.*.*
+			 *  x.*
+			 * if both options are possible
+			 */
+			while (*p && (*p != '.' || !*q))
+				p++;
+		}
+		if (*p || *q)
+			continue;
+
+		ctx->path_match = n + 1;
+		ctx->path_match_len = ctx->ppos;
+		return;
+	}
+
+	if (!ctx->path_match)
+		ctx->wildcount = 0;
+}
+
+int
+lejp_get_wildcard(struct lejp_ctx *ctx, int wildcard, char *dest, int len)
+{
+	int n;
+
+	if (wildcard >= ctx->wildcount || !len)
+		return 0;
+
+	n = ctx->wild[wildcard];
+
+	while (--len && n < ctx->ppos && (n == ctx->wild[wildcard] || ctx->path[n] != '.'))
+		*dest++ = ctx->path[n++];
+
+	*dest = '\0';
+	n++;
+
+	return n - ctx->wild[wildcard];
+}
+
+/**
+ * lejp_parse - interpret some more incoming data incrementally
+ *
+ * \param ctx:	previously constructed parsing context
+ * \param json:	char buffer with the new data to interpret
+ * \param len:	amount of data in the buffer
+ *
+ * Because lejp is a stream parser, it incrementally parses as new data
+ * becomes available, maintaining all state in the context struct.  So an
+ * incomplete JSON is a normal situation, getting you a LEJP_CONTINUE
+ * return, signalling there's no error but to call again with more data when
+ * it comes to complete the parsing.  Successful parsing completes with a
+ * 0 or positive integer indicating how much of the last input buffer was
+ * unused.
+ */
+
+int
+lejp_parse(struct lejp_ctx *ctx, const unsigned char *json, int len)
+{
+	unsigned char c, n, s, ret = LEJP_REJECT_UNKNOWN;
+	static const char esc_char[] = "\"\\/bfnrt";
+	static const char esc_tran[] = "\"\\/\b\f\n\r\t";
+	static const char tokens[] = "rue alse ull ";
+
+	if (!ctx->sp && !ctx->ppos)
+		ctx->callback(ctx, LEJPCB_START);
+
+	while (len--) {
+		c = *json++;
+
+		s = ctx->st[ctx->sp].s;
+
+		/* skip whitespace unless we should care */
+		if (c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '#') {
+			if (c == '\n') {
+				ctx->line++;
+				ctx->st[ctx->sp].s &= ~LEJP_FLAG_WS_COMMENTLINE;
+			}
+			if (!(s & LEJP_FLAG_WS_KEEP)) {
+				if (c == '#')
+					ctx->st[ctx->sp].s |=
+						LEJP_FLAG_WS_COMMENTLINE;
+				continue;
+			}
+		}
+
+		if (ctx->st[ctx->sp].s & LEJP_FLAG_WS_COMMENTLINE)
+			continue;
+
+		switch (s) {
+		case LEJP_IDLE:
+			if (c != '{') {
+				ret = LEJP_REJECT_IDLE_NO_BRACE;
+				goto reject;
+			}
+			if (ctx->callback(ctx, LEJPCB_OBJECT_START)) {
+				ret = LEJP_REJECT_CALLBACK;
+				goto reject;
+			}
+			ctx->st[ctx->sp].s = LEJP_MEMBERS;
+			break;
+		case LEJP_MEMBERS:
+			if (c == '}') {
+				ctx->st[ctx->sp].s = LEJP_IDLE;
+				ret = LEJP_REJECT_MEMBERS_NO_CLOSE;
+				goto reject;
+			}
+			ctx->st[ctx->sp].s = LEJP_M_P;
+			goto redo_character;
+		case LEJP_M_P:
+			if (c != '\"') {
+				ret = LEJP_REJECT_MP_NO_OPEN_QUOTE;
+				goto reject;
+			}
+			/* push */
+			ctx->st[ctx->sp].s = LEJP_MP_DELIM;
+			c = LEJP_MP_STRING;
+			goto add_stack_level;
+
+		case LEJP_MP_STRING:
+			if (c == '\"') {
+				if (!ctx->sp) {
+					ret = LEJP_REJECT_MP_STRING_UNDERRUN;
+					goto reject;
+				}
+				if (ctx->st[ctx->sp - 1].s != LEJP_MP_DELIM) {
+					ctx->buf[ctx->npos] = '\0';
+					if (ctx->callback(ctx,
+						      LEJPCB_VAL_STR_END) < 0) {
+						ret = LEJP_REJECT_CALLBACK;
+						goto reject;
+					}
+				}
+				/* pop */
+				ctx->sp--;
+				break;
+			}
+			if (c == '\\') {
+				ctx->st[ctx->sp].s = LEJP_MP_STRING_ESC;
+				break;
+			}
+			if (c < ' ') {/* "control characters" not allowed */
+				ret = LEJP_REJECT_MP_ILLEGAL_CTRL;
+				goto reject;
+			}
+			goto emit_string_char;
+
+		case LEJP_MP_STRING_ESC:
+			if (c == 'u') {
+				ctx->st[ctx->sp].s = LEJP_MP_STRING_ESC_U1;
+				ctx->uni = 0;
+				break;
+			}
+			for (n = 0; n < sizeof(esc_char); n++) {
+				if (c != esc_char[n])
+					continue;
+				/* found it */
+				c = esc_tran[n];
+				ctx->st[ctx->sp].s = LEJP_MP_STRING;
+				goto emit_string_char;
+			}
+			ret = LEJP_REJECT_MP_STRING_ESC_ILLEGAL_ESC;
+			/* illegal escape char */
+			goto reject;
+
+		case LEJP_MP_STRING_ESC_U1:
+		case LEJP_MP_STRING_ESC_U2:
+		case LEJP_MP_STRING_ESC_U3:
+		case LEJP_MP_STRING_ESC_U4:
+			ctx->uni <<= 4;
+			if (c >= '0' && c <= '9')
+				ctx->uni |= c - '0';
+			else
+				if (c >= 'a' && c <= 'f')
+					ctx->uni = c - 'a' + 10;
+				else
+					if (c >= 'A' && c <= 'F')
+						ctx->uni = c - 'A' + 10;
+					else {
+						ret = LEJP_REJECT_ILLEGAL_HEX;
+						goto reject;
+					}
+			ctx->st[ctx->sp].s++;
+			switch (s) {
+			case LEJP_MP_STRING_ESC_U2:
+				if (ctx->uni < 0x08)
+					break;
+				/*
+				 * 0x08-0xff (0x0800 - 0xffff)
+				 * emit 3-byte UTF-8
+				 */
+				c = 0xe0 | ((ctx->uni >> 4) & 0xf);
+				goto emit_string_char;
+
+			case LEJP_MP_STRING_ESC_U3:
+				if (ctx->uni >= 0x080) {
+					/*
+					 * 0x080 - 0xfff (0x0800 - 0xffff)
+					 * middle 3-byte seq
+					 * send ....XXXXXX..
+					 */
+					c = 0x80 | ((ctx->uni >> 2) & 0x3f);
+					goto emit_string_char;
+				}
+				if (ctx->uni < 0x008)
+					break;
+				/*
+				 * 0x008 - 0x7f (0x0080 - 0x07ff)
+				 * start 2-byte seq
+				 */
+				c = 0xc0 | (ctx->uni >> 2);
+				goto emit_string_char;
+
+			case LEJP_MP_STRING_ESC_U4:
+				if (ctx->uni >= 0x0080)
+					/* end of 2 or 3-byte seq */
+					c = 0x80 | (ctx->uni & 0x3f);
+				else
+					/* literal */
+					c = (unsigned char)ctx->uni;
+
+				ctx->st[ctx->sp].s = LEJP_MP_STRING;
+				goto emit_string_char;
+			default:
+				break;
+			}
+			break;
+
+		case LEJP_MP_DELIM:
+			if (c != ':') {
+				ret = LEJP_REJECT_MP_DELIM_MISSING_COLON;
+				goto reject;
+			}
+			ctx->st[ctx->sp].s = LEJP_MP_VALUE;
+			ctx->path[ctx->ppos] = '\0';
+
+			lejp_check_path_match(ctx);
+			if (ctx->callback(ctx, LEJPCB_PAIR_NAME)) {
+				ret = LEJP_REJECT_CALLBACK;
+				goto reject;
+			}
+			break;
+
+		case LEJP_MP_VALUE:
+			if (c >= '0' && c <= '9') {
+				ctx->npos = 0;
+				ctx->dcount = 0;
+				ctx->f = 0;
+				ctx->st[ctx->sp].s = LEJP_MP_VALUE_NUM_INT;
+				goto redo_character;
+			}
+			switch (c) {
+			case'\"':
+				/* push */
+				ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
+				c = LEJP_MP_STRING;
+				ctx->npos = 0;
+				ctx->buf[0] = '\0';
+				if (ctx->callback(ctx, LEJPCB_VAL_STR_START)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				goto add_stack_level;
+
+			case '{':
+				/* push */
+				ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
+				c = LEJP_MEMBERS;
+				lejp_check_path_match(ctx);
+				if (ctx->callback(ctx, LEJPCB_OBJECT_START)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				ctx->path_match = 0;
+				goto add_stack_level;
+
+			case '[':
+				/* push */
+				ctx->st[ctx->sp].s = LEJP_MP_ARRAY_END;
+				c = LEJP_MP_VALUE;
+				ctx->path[ctx->ppos++] = '[';
+				ctx->path[ctx->ppos++] = ']';
+				ctx->path[ctx->ppos] = '\0';
+				if (ctx->callback(ctx, LEJPCB_ARRAY_START)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				ctx->i[ctx->ipos++] = 0;
+				if (ctx->ipos > ARRAY_SIZE(ctx->i)) {
+					ret = LEJP_REJECT_MP_DELIM_ISTACK;
+					goto reject;
+				}
+				goto add_stack_level;
+
+			case 't': /* true */
+				ctx->uni = 0;
+				ctx->st[ctx->sp].s = LEJP_MP_VALUE_TOK;
+				break;
+
+			case 'f':
+				ctx->uni = 4;
+				ctx->st[ctx->sp].s = LEJP_MP_VALUE_TOK;
+				break;
+
+			case 'n':
+				ctx->uni = 4 + 5;
+				ctx->st[ctx->sp].s = LEJP_MP_VALUE_TOK;
+				break;
+			default:
+				ret = LEJP_REJECT_MP_DELIM_BAD_VALUE_START;
+				goto reject;
+			}
+			break;
+
+		case LEJP_MP_VALUE_NUM_INT:
+			if (!ctx->npos && c == '-') {
+				ctx->f |= LEJP_SEEN_MINUS;
+				goto append_npos;
+			}
+
+			if (ctx->dcount < 10 && c >= '0' && c <= '9') {
+				if (ctx->f & LEJP_SEEN_POINT)
+					ctx->f |= LEJP_SEEN_POST_POINT;
+				ctx->dcount++;
+				goto append_npos;
+			}
+			if (c == '.') {
+				if (ctx->dcount || (ctx->f & LEJP_SEEN_POINT)) {
+					ret = LEJP_REJECT_MP_VAL_NUM_FORMAT;
+					goto reject;
+				}
+				ctx->f |= LEJP_SEEN_POINT;
+				goto append_npos;
+			}
+			/*
+			 * before exponent, if we had . we must have had at
+			 * least one more digit
+			 */
+			if ((ctx->f &
+				(LEJP_SEEN_POINT | LEJP_SEEN_POST_POINT)) ==
+							      LEJP_SEEN_POINT) {
+				ret = LEJP_REJECT_MP_VAL_NUM_INT_NO_FRAC;
+				goto reject;
+			}
+			if (c == 'e' || c == 'E') {
+				if (ctx->f & LEJP_SEEN_EXP) {
+					ret = LEJP_REJECT_MP_VAL_NUM_FORMAT;
+					goto reject;
+				}
+				ctx->f |= LEJP_SEEN_EXP;
+				ctx->st[ctx->sp].s = LEJP_MP_VALUE_NUM_EXP;
+				goto append_npos;
+			}
+			/* if none of the above, did we even have a number? */
+			if (!ctx->dcount) {
+				ret = LEJP_REJECT_MP_VAL_NUM_FORMAT;
+				goto reject;
+			}
+
+			ctx->buf[ctx->npos] = '\0';
+			if (ctx->f & LEJP_SEEN_POINT) {
+				if (ctx->callback(ctx, LEJPCB_VAL_NUM_FLOAT)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+			} else {
+				if (ctx->callback(ctx, LEJPCB_VAL_NUM_INT)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+			}
+
+			/* then this is the post-number character, loop */
+			ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
+			goto redo_character;
+
+		case LEJP_MP_VALUE_NUM_EXP:
+			ctx->st[ctx->sp].s = LEJP_MP_VALUE_NUM_INT;
+			if (c >= '0' && c <= '9')
+				goto redo_character;
+			if (c == '+' || c == '-')
+				goto append_npos;
+			ret = LEJP_REJECT_MP_VAL_NUM_EXP_BAD_EXP;
+			goto reject;
+
+		case LEJP_MP_VALUE_TOK: /* true, false, null */
+			if (c != tokens[ctx->uni]) {
+				ret = LEJP_REJECT_MP_VAL_TOK_UNKNOWN;
+				goto reject;
+			}
+			ctx->uni++;
+			if (tokens[ctx->uni] != ' ')
+				break;
+			switch (ctx->uni) {
+			case 3:
+				ctx->buf[0] = '1';
+				ctx->buf[1] = '\0';
+				if (ctx->callback(ctx, LEJPCB_VAL_TRUE)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				break;
+			case 8:
+				ctx->buf[0] = '0';
+				ctx->buf[1] = '\0';
+				if (ctx->callback(ctx, LEJPCB_VAL_FALSE)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				break;
+			case 12:
+				ctx->buf[0] = '\0';
+				if (ctx->callback(ctx, LEJPCB_VAL_NULL)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				break;
+			}
+			ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
+			break;
+
+		case LEJP_MP_COMMA_OR_END:
+			ctx->path[ctx->ppos] = '\0';
+			if (c == ',') {
+				/* increment this stack level's index */
+				ctx->st[ctx->sp].s = LEJP_M_P;
+				if (!ctx->sp) {
+					ctx->ppos = 0;
+					/*
+					 * since we came back to root level,
+					 * no path can still match
+					 */
+					ctx->path_match = 0;
+					break;
+				}
+				ctx->ppos = ctx->st[ctx->sp - 1].p;
+				ctx->path[ctx->ppos] = '\0';
+				if (ctx->path_match &&
+					       ctx->ppos <= ctx->path_match_len)
+					/*
+					 * we shrank the path to be
+					 * smaller than the matching point
+					 */
+					ctx->path_match = 0;
+
+				if (ctx->st[ctx->sp - 1].s != LEJP_MP_ARRAY_END)
+					break;
+				/* top level is definitely an array... */
+				if (ctx->ipos)
+					ctx->i[ctx->ipos - 1]++;
+				ctx->st[ctx->sp].s = LEJP_MP_VALUE;
+				break;
+			}
+			if (c == ']') {
+				if (!ctx->sp) {
+					ret = LEJP_REJECT_MP_C_OR_E_UNDERF;
+					goto reject;
+				}
+				/* pop */
+				ctx->sp--;
+				if (ctx->st[ctx->sp].s != LEJP_MP_ARRAY_END) {
+					ret = LEJP_REJECT_MP_C_OR_E_NOTARRAY;
+					goto reject;
+				}
+				/* drop the path [n] bit */
+				ctx->ppos = ctx->st[ctx->sp - 1].p;
+				ctx->ipos = ctx->st[ctx->sp - 1].i;
+				ctx->path[ctx->ppos] = '\0';
+				if (ctx->path_match &&
+					       ctx->ppos <= ctx->path_match_len)
+					/*
+					 * we shrank the path to be
+					 * smaller than the matching point
+					 */
+					ctx->path_match = 0;
+
+				/* do LEJP_MP_ARRAY_END processing */
+				goto redo_character;
+			}
+			if (c == '}') {
+				if (ctx->sp == 0) {
+					lejp_check_path_match(ctx);
+					if (ctx->callback(ctx, LEJPCB_OBJECT_END)) {
+						ret = LEJP_REJECT_CALLBACK;
+						goto reject;
+					}
+					ctx->callback(ctx, LEJPCB_COMPLETE);
+					/* done, return unused amount */
+					return len;
+				}
+				/* pop */
+				ctx->sp--;
+				ctx->ppos = ctx->st[ctx->sp - 1].p;
+				ctx->ipos = ctx->st[ctx->sp - 1].i;
+				ctx->path[ctx->ppos] = '\0';
+				if (ctx->path_match &&
+					       ctx->ppos <= ctx->path_match_len)
+					/*
+					 * we shrank the path to be
+					 * smaller than the matching point
+					 */
+					ctx->path_match = 0;
+				lejp_check_path_match(ctx);
+				if (ctx->callback(ctx, LEJPCB_OBJECT_END)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				break;
+			}
+
+			ret = LEJP_REJECT_MP_C_OR_E_NEITHER;
+			goto reject;
+
+		case LEJP_MP_ARRAY_END:
+			ctx->path[ctx->ppos] = '\0';
+			if (c == ',') {
+				/* increment this stack level's index */
+				if (ctx->ipos)
+					ctx->i[ctx->ipos - 1]++;
+				ctx->st[ctx->sp].s = LEJP_MP_VALUE;
+				if (ctx->sp)
+					ctx->ppos = ctx->st[ctx->sp - 1].p;
+				ctx->path[ctx->ppos] = '\0';
+				break;
+			}
+			if (c != ']') {
+				ret = LEJP_REJECT_MP_ARRAY_END_MISSING;
+				goto reject;
+			}
+
+			ctx->st[ctx->sp].s = LEJP_MP_COMMA_OR_END;
+			ctx->callback(ctx, LEJPCB_ARRAY_END);
+			break;
+		}
+
+		continue;
+
+emit_string_char:
+		if (!ctx->sp || ctx->st[ctx->sp - 1].s != LEJP_MP_DELIM) {
+			/* assemble the string value into chunks */
+			ctx->buf[ctx->npos++] = c;
+			if (ctx->npos == sizeof(ctx->buf) - 1) {
+				if (ctx->callback(ctx, LEJPCB_VAL_STR_CHUNK)) {
+					ret = LEJP_REJECT_CALLBACK;
+					goto reject;
+				}
+				ctx->npos = 0;
+			}
+			continue;
+		}
+		/* name part of name:value pair */
+		ctx->path[ctx->ppos++] = c;
+		continue;
+
+add_stack_level:
+		/* push on to the object stack */
+		if (ctx->ppos && ctx->st[ctx->sp].s != LEJP_MP_COMMA_OR_END &&
+				ctx->st[ctx->sp].s != LEJP_MP_ARRAY_END)
+			ctx->path[ctx->ppos++] = '.';
+
+		ctx->st[ctx->sp].p = ctx->ppos;
+		ctx->st[ctx->sp].i = ctx->ipos;
+		if (++ctx->sp == ARRAY_SIZE(ctx->st)) {
+			ret = LEJP_REJECT_STACK_OVERFLOW;
+			goto reject;
+		}
+		ctx->path[ctx->ppos] = '\0';
+		ctx->st[ctx->sp].s = c;
+		ctx->st[ctx->sp].b = 0;
+		continue;
+
+append_npos:
+		if (ctx->npos >= sizeof(ctx->buf)) {
+			ret = LEJP_REJECT_NUM_TOO_LONG;
+			goto reject;
+		}
+		ctx->buf[ctx->npos++] = c;
+		continue;
+
+redo_character:
+		json--;
+		len++;
+	}
+
+	return LEJP_CONTINUE;
+
+reject:
+	ctx->callback(ctx, LEJPCB_FAILED);
+	return ret;
+}
diff --git a/thirdparty/lws/misc/lejp.h b/thirdparty/lws/misc/lejp.h
new file mode 100644
index 0000000000..0b37bb3e42
--- /dev/null
+++ b/thirdparty/lws/misc/lejp.h
@@ -0,0 +1,232 @@
+#include "libwebsockets.h"
+struct lejp_ctx;
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(_x) (sizeof(_x) / sizeof(_x[0]))
+#endif
+#define LEJP_FLAG_WS_KEEP 64
+#define LEJP_FLAG_WS_COMMENTLINE 32
+
+enum lejp_states {
+	LEJP_IDLE = 0,
+	LEJP_MEMBERS = 1,
+	LEJP_M_P = 2,
+	LEJP_MP_STRING = LEJP_FLAG_WS_KEEP | 3,
+	LEJP_MP_STRING_ESC = LEJP_FLAG_WS_KEEP | 4,
+	LEJP_MP_STRING_ESC_U1 = LEJP_FLAG_WS_KEEP | 5,
+	LEJP_MP_STRING_ESC_U2 = LEJP_FLAG_WS_KEEP | 6,
+	LEJP_MP_STRING_ESC_U3 = LEJP_FLAG_WS_KEEP | 7,
+	LEJP_MP_STRING_ESC_U4 = LEJP_FLAG_WS_KEEP | 8,
+	LEJP_MP_DELIM = 9,
+	LEJP_MP_VALUE = 10,
+	LEJP_MP_VALUE_NUM_INT = LEJP_FLAG_WS_KEEP | 11,
+	LEJP_MP_VALUE_NUM_EXP = LEJP_FLAG_WS_KEEP | 12,
+	LEJP_MP_VALUE_TOK = LEJP_FLAG_WS_KEEP | 13,
+	LEJP_MP_COMMA_OR_END = 14,
+	LEJP_MP_ARRAY_END = 15,
+};
+
+enum lejp_reasons {
+	LEJP_CONTINUE = -1,
+	LEJP_REJECT_IDLE_NO_BRACE = -2,
+	LEJP_REJECT_MEMBERS_NO_CLOSE = -3,
+	LEJP_REJECT_MP_NO_OPEN_QUOTE = -4,
+	LEJP_REJECT_MP_STRING_UNDERRUN = -5,
+	LEJP_REJECT_MP_ILLEGAL_CTRL = -6,
+	LEJP_REJECT_MP_STRING_ESC_ILLEGAL_ESC = -7,
+	LEJP_REJECT_ILLEGAL_HEX = -8,
+	LEJP_REJECT_MP_DELIM_MISSING_COLON = -9,
+	LEJP_REJECT_MP_DELIM_BAD_VALUE_START = -10,
+	LEJP_REJECT_MP_VAL_NUM_INT_NO_FRAC = -11,
+	LEJP_REJECT_MP_VAL_NUM_FORMAT = -12,
+	LEJP_REJECT_MP_VAL_NUM_EXP_BAD_EXP = -13,
+	LEJP_REJECT_MP_VAL_TOK_UNKNOWN = -14,
+	LEJP_REJECT_MP_C_OR_E_UNDERF = -15,
+	LEJP_REJECT_MP_C_OR_E_NOTARRAY = -16,
+	LEJP_REJECT_MP_ARRAY_END_MISSING = -17,
+	LEJP_REJECT_STACK_OVERFLOW = -18,
+	LEJP_REJECT_MP_DELIM_ISTACK = -19,
+	LEJP_REJECT_NUM_TOO_LONG = -20,
+	LEJP_REJECT_MP_C_OR_E_NEITHER = -21,
+	LEJP_REJECT_UNKNOWN = -22,
+	LEJP_REJECT_CALLBACK = -23
+};
+
+#define LEJP_FLAG_CB_IS_VALUE 64
+
+enum lejp_callbacks {
+	LEJPCB_CONSTRUCTED	= 0,
+	LEJPCB_DESTRUCTED	= 1,
+
+	LEJPCB_START		= 2,
+	LEJPCB_COMPLETE		= 3,
+	LEJPCB_FAILED		= 4,
+
+	LEJPCB_PAIR_NAME	= 5,
+
+	LEJPCB_VAL_TRUE		= LEJP_FLAG_CB_IS_VALUE | 6,
+	LEJPCB_VAL_FALSE	= LEJP_FLAG_CB_IS_VALUE | 7,
+	LEJPCB_VAL_NULL		= LEJP_FLAG_CB_IS_VALUE | 8,
+	LEJPCB_VAL_NUM_INT	= LEJP_FLAG_CB_IS_VALUE | 9,
+	LEJPCB_VAL_NUM_FLOAT	= LEJP_FLAG_CB_IS_VALUE | 10,
+	LEJPCB_VAL_STR_START	= 11, /* notice handle separately */
+	LEJPCB_VAL_STR_CHUNK	= LEJP_FLAG_CB_IS_VALUE | 12,
+	LEJPCB_VAL_STR_END	= LEJP_FLAG_CB_IS_VALUE | 13,
+
+	LEJPCB_ARRAY_START	= 14,
+	LEJPCB_ARRAY_END	= 15,
+
+	LEJPCB_OBJECT_START	= 16,
+	LEJPCB_OBJECT_END	= 17
+};
+
+/**
+ * _lejp_callback() - User parser actions
+ * \param ctx:	LEJP context
+ * \param reason:	Callback reason
+ *
+ *	Your user callback is associated with the context at construction time,
+ *	and receives calls as the parsing progresses.
+ *
+ *	All of the callbacks may be ignored and just return 0.
+ *
+ *	The reasons it might get called, found in @reason, are:
+ *
+ *  LEJPCB_CONSTRUCTED:  The context was just constructed... you might want to
+ *		perform one-time allocation for the life of the context.
+ *
+ *  LEJPCB_DESTRUCTED:	The context is being destructed... if you made any
+ *		allocations at construction-time, you can free them now
+ *
+ *  LEJPCB_START:	Parsing is beginning at the first byte of input
+ *
+ *  LEJPCB_COMPLETE:	Parsing has completed successfully.  You'll get a 0 or
+ *			positive return code from lejp_parse indicating the
+ *			amount of unused bytes left in the input buffer
+ *
+ *  LEJPCB_FAILED:	Parsing failed.  You'll get a negative error code
+ *  			returned from lejp_parse
+ *
+ *  LEJPCB_PAIR_NAME:	When a "name":"value" pair has had the name parsed,
+ *			this callback occurs.  You can find the new name at
+ *			the end of ctx->path[]
+ *
+ *  LEJPCB_VAL_TRUE:	The "true" value appeared
+ *
+ *  LEJPCB_VAL_FALSE:	The "false" value appeared
+ *
+ *  LEJPCB_VAL_NULL:	The "null" value appeared
+ *
+ *  LEJPCB_VAL_NUM_INT:	A string representing an integer is in ctx->buf
+ *
+ *  LEJPCB_VAL_NUM_FLOAT: A string representing a float is in ctx->buf
+ *
+ *  LEJPCB_VAL_STR_START: We are starting to parse a string, no data yet
+ *
+ *  LEJPCB_VAL_STR_CHUNK: We parsed LEJP_STRING_CHUNK -1 bytes of string data in
+ *			ctx->buf, which is as much as we can buffer, so we are
+ *			spilling it.  If all your strings are less than
+ *			LEJP_STRING_CHUNK - 1 bytes, you will never see this
+ *			callback.
+ *
+ *  LEJPCB_VAL_STR_END:	String parsing has completed, the last chunk of the
+ *			string is in ctx->buf.
+ *
+ *  LEJPCB_ARRAY_START:	An array started
+ *
+ *  LEJPCB_ARRAY_END:	An array ended
+ *
+ *  LEJPCB_OBJECT_START: An object started
+ *
+ *  LEJPCB_OBJECT_END:	An object ended
+ */
+LWS_EXTERN signed char _lejp_callback(struct lejp_ctx *ctx, char reason);
+
+typedef signed char (*lejp_callback)(struct lejp_ctx *ctx, char reason);
+
+#ifndef LEJP_MAX_DEPTH
+#define LEJP_MAX_DEPTH 12
+#endif
+#ifndef LEJP_MAX_INDEX_DEPTH
+#define LEJP_MAX_INDEX_DEPTH 5
+#endif
+#ifndef LEJP_MAX_PATH
+#define LEJP_MAX_PATH 128
+#endif
+#ifndef LEJP_STRING_CHUNK
+/* must be >= 30 to assemble floats */
+#define LEJP_STRING_CHUNK 255
+#endif
+
+enum num_flags {
+	LEJP_SEEN_MINUS = (1 << 0),
+	LEJP_SEEN_POINT = (1 << 1),
+	LEJP_SEEN_POST_POINT = (1 << 2),
+	LEJP_SEEN_EXP = (1 << 3)
+};
+
+struct _lejp_stack {
+	char s; /* lejp_state stack*/
+	char p;	/* path length */
+	char i; /* index array length */
+	char b; /* user bitfield */
+};
+
+struct lejp_ctx {
+
+	/* sorted by type for most compact alignment
+	 *
+	 * pointers
+	 */
+
+	signed char (*callback)(struct lejp_ctx *ctx, char reason);
+	void *user;
+	const char * const *paths;
+
+	/* arrays */
+
+	struct _lejp_stack st[LEJP_MAX_DEPTH];
+	unsigned short i[LEJP_MAX_INDEX_DEPTH]; /* index array */
+	unsigned short wild[LEJP_MAX_INDEX_DEPTH]; /* index array */
+	char path[LEJP_MAX_PATH];
+	char buf[LEJP_STRING_CHUNK];
+
+	/* int */
+
+	unsigned int line;
+
+	/* short */
+
+	unsigned short uni;
+
+	/* char */
+
+	unsigned char npos;
+	unsigned char dcount;
+	unsigned char f;
+	unsigned char sp; /* stack head */
+	unsigned char ipos; /* index stack depth */
+	unsigned char ppos;
+	unsigned char count_paths;
+	unsigned char path_match;
+	unsigned char path_match_len;
+	unsigned char wildcount;
+};
+
+LWS_VISIBLE LWS_EXTERN void
+lejp_construct(struct lejp_ctx *ctx,
+	       signed char (*callback)(struct lejp_ctx *ctx, char reason),
+	       void *user, const char * const *paths, unsigned char paths_count);
+
+LWS_VISIBLE LWS_EXTERN void
+lejp_destruct(struct lejp_ctx *ctx);
+
+LWS_VISIBLE LWS_EXTERN int
+lejp_parse(struct lejp_ctx *ctx, const unsigned char *json, int len);
+
+LWS_VISIBLE LWS_EXTERN void
+lejp_change_callback(struct lejp_ctx *ctx,
+		     signed char (*callback)(struct lejp_ctx *ctx, char reason));
+
+LWS_VISIBLE LWS_EXTERN int
+lejp_get_wildcard(struct lejp_ctx *ctx, int wildcard, char *dest, int len);
diff --git a/thirdparty/lws/misc/sha-1.c b/thirdparty/lws/misc/sha-1.c
new file mode 100644
index 0000000000..9353fbefe4
--- /dev/null
+++ b/thirdparty/lws/misc/sha-1.c
@@ -0,0 +1,300 @@
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * FIPS pub 180-1: Secure Hash Algorithm (SHA-1)
+ * based on: http://csrc.nist.gov/fips/fip180-1.txt
+ * implemented by Jun-ichiro itojun Itoh <itojun@itojun.org>
+ */
+
+#include "private-libwebsockets.h"
+
+#ifdef LWS_HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+struct sha1_ctxt {
+	union {
+		unsigned char		b8[20];
+		unsigned int		b32[5];
+	} h;
+	union {
+		unsigned char		b8[8];
+		u_int64_t		b64[1];
+	} c;
+	union {
+		unsigned char		b8[64];
+		unsigned int		b32[16];
+	} m;
+	unsigned char			count;
+};
+
+/* sanity check */
+#if !defined(BYTE_ORDER) || !defined(LITTLE_ENDIAN) || !defined(BIG_ENDIAN)
+# define unsupported 1
+#elif BYTE_ORDER != BIG_ENDIAN
+# if BYTE_ORDER != LITTLE_ENDIAN
+#  define unsupported 1
+# endif
+#endif
+
+#ifndef unsupported
+
+/* constant table */
+static const unsigned int _K[] =
+			{ 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xca62c1d6 };
+#define	K(t)	_K[(t) / 20]
+
+#define	F0(b, c, d)	(((b) & (c)) | ((~(b)) & (d)))
+#define	F1(b, c, d)	(((b) ^ (c)) ^ (d))
+#define	F2(b, c, d)	(((b) & (c)) | ((b) & (d)) | ((c) & (d)))
+#define	F3(b, c, d)	(((b) ^ (c)) ^ (d))
+
+#define	S(n, x)		(((x) << (n)) | ((x) >> (32 - n)))
+
+#define	H(n)	(ctxt->h.b32[(n)])
+#define	COUNT	(ctxt->count)
+#define	BCOUNT	(ctxt->c.b64[0] / 8)
+#define	W(n)	(ctxt->m.b32[(n)])
+
+#define	PUTBYTE(x)	{ \
+	ctxt->m.b8[(COUNT % 64)] = (x);		\
+	COUNT++;				\
+	COUNT %= 64;				\
+	ctxt->c.b64[0] += 8;			\
+	if (COUNT % 64 == 0)			\
+		sha1_step(ctxt);		\
+	}
+
+#define	PUTPAD(x)	{ \
+	ctxt->m.b8[(COUNT % 64)] = (x);		\
+	COUNT++;				\
+	COUNT %= 64;				\
+	if (COUNT % 64 == 0)			\
+		sha1_step(ctxt);		\
+	}
+
+
+static void
+sha1_step(struct sha1_ctxt *ctxt)
+{
+	unsigned int	a, b, c, d, e, tmp;
+	size_t t, s;
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+	struct sha1_ctxt tctxt;
+
+	memcpy(&tctxt.m.b8[0], &ctxt->m.b8[0], 64);
+	ctxt->m.b8[0] = tctxt.m.b8[3]; ctxt->m.b8[1] = tctxt.m.b8[2];
+	ctxt->m.b8[2] = tctxt.m.b8[1]; ctxt->m.b8[3] = tctxt.m.b8[0];
+	ctxt->m.b8[4] = tctxt.m.b8[7]; ctxt->m.b8[5] = tctxt.m.b8[6];
+	ctxt->m.b8[6] = tctxt.m.b8[5]; ctxt->m.b8[7] = tctxt.m.b8[4];
+	ctxt->m.b8[8] = tctxt.m.b8[11]; ctxt->m.b8[9] = tctxt.m.b8[10];
+	ctxt->m.b8[10] = tctxt.m.b8[9]; ctxt->m.b8[11] = tctxt.m.b8[8];
+	ctxt->m.b8[12] = tctxt.m.b8[15]; ctxt->m.b8[13] = tctxt.m.b8[14];
+	ctxt->m.b8[14] = tctxt.m.b8[13]; ctxt->m.b8[15] = tctxt.m.b8[12];
+	ctxt->m.b8[16] = tctxt.m.b8[19]; ctxt->m.b8[17] = tctxt.m.b8[18];
+	ctxt->m.b8[18] = tctxt.m.b8[17]; ctxt->m.b8[19] = tctxt.m.b8[16];
+	ctxt->m.b8[20] = tctxt.m.b8[23]; ctxt->m.b8[21] = tctxt.m.b8[22];
+	ctxt->m.b8[22] = tctxt.m.b8[21]; ctxt->m.b8[23] = tctxt.m.b8[20];
+	ctxt->m.b8[24] = tctxt.m.b8[27]; ctxt->m.b8[25] = tctxt.m.b8[26];
+	ctxt->m.b8[26] = tctxt.m.b8[25]; ctxt->m.b8[27] = tctxt.m.b8[24];
+	ctxt->m.b8[28] = tctxt.m.b8[31]; ctxt->m.b8[29] = tctxt.m.b8[30];
+	ctxt->m.b8[30] = tctxt.m.b8[29]; ctxt->m.b8[31] = tctxt.m.b8[28];
+	ctxt->m.b8[32] = tctxt.m.b8[35]; ctxt->m.b8[33] = tctxt.m.b8[34];
+	ctxt->m.b8[34] = tctxt.m.b8[33]; ctxt->m.b8[35] = tctxt.m.b8[32];
+	ctxt->m.b8[36] = tctxt.m.b8[39]; ctxt->m.b8[37] = tctxt.m.b8[38];
+	ctxt->m.b8[38] = tctxt.m.b8[37]; ctxt->m.b8[39] = tctxt.m.b8[36];
+	ctxt->m.b8[40] = tctxt.m.b8[43]; ctxt->m.b8[41] = tctxt.m.b8[42];
+	ctxt->m.b8[42] = tctxt.m.b8[41]; ctxt->m.b8[43] = tctxt.m.b8[40];
+	ctxt->m.b8[44] = tctxt.m.b8[47]; ctxt->m.b8[45] = tctxt.m.b8[46];
+	ctxt->m.b8[46] = tctxt.m.b8[45]; ctxt->m.b8[47] = tctxt.m.b8[44];
+	ctxt->m.b8[48] = tctxt.m.b8[51]; ctxt->m.b8[49] = tctxt.m.b8[50];
+	ctxt->m.b8[50] = tctxt.m.b8[49]; ctxt->m.b8[51] = tctxt.m.b8[48];
+	ctxt->m.b8[52] = tctxt.m.b8[55]; ctxt->m.b8[53] = tctxt.m.b8[54];
+	ctxt->m.b8[54] = tctxt.m.b8[53]; ctxt->m.b8[55] = tctxt.m.b8[52];
+	ctxt->m.b8[56] = tctxt.m.b8[59]; ctxt->m.b8[57] = tctxt.m.b8[58];
+	ctxt->m.b8[58] = tctxt.m.b8[57]; ctxt->m.b8[59] = tctxt.m.b8[56];
+	ctxt->m.b8[60] = tctxt.m.b8[63]; ctxt->m.b8[61] = tctxt.m.b8[62];
+	ctxt->m.b8[62] = tctxt.m.b8[61]; ctxt->m.b8[63] = tctxt.m.b8[60];
+#endif
+
+	a = H(0); b = H(1); c = H(2); d = H(3); e = H(4);
+
+	for (t = 0; t < 20; t++) {
+		s = t & 0x0f;
+		if (t >= 16)
+			W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+							W((s+2) & 0x0f) ^ W(s));
+
+		tmp = S(5, a) + F0(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+	for (t = 20; t < 40; t++) {
+		s = t & 0x0f;
+		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+							W((s+2) & 0x0f) ^ W(s));
+		tmp = S(5, a) + F1(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+	for (t = 40; t < 60; t++) {
+		s = t & 0x0f;
+		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+							W((s+2) & 0x0f) ^ W(s));
+		tmp = S(5, a) + F2(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+	for (t = 60; t < 80; t++) {
+		s = t & 0x0f;
+		W(s) = S(1, W((s+13) & 0x0f) ^ W((s+8) & 0x0f) ^
+							W((s+2) & 0x0f) ^ W(s));
+		tmp = S(5, a) + F3(b, c, d) + e + W(s) + K(t);
+		e = d; d = c; c = S(30, b); b = a; a = tmp;
+	}
+
+	H(0) = H(0) + a;
+	H(1) = H(1) + b;
+	H(2) = H(2) + c;
+	H(3) = H(3) + d;
+	H(4) = H(4) + e;
+
+	bzero(&ctxt->m.b8[0], 64);
+}
+
+/*------------------------------------------------------------*/
+
+static void
+_sha1_init(struct sha1_ctxt *ctxt)
+{
+	bzero(ctxt, sizeof(struct sha1_ctxt));
+	H(0) = 0x67452301;
+	H(1) = 0xefcdab89;
+	H(2) = 0x98badcfe;
+	H(3) = 0x10325476;
+	H(4) = 0xc3d2e1f0;
+}
+
+void
+sha1_pad(struct sha1_ctxt *ctxt)
+{
+	size_t padlen;		/*pad length in bytes*/
+	size_t padstart;
+
+	PUTPAD(0x80);
+
+	padstart = COUNT % 64;
+	padlen = 64 - padstart;
+	if (padlen < 8) {
+		bzero(&ctxt->m.b8[padstart], padlen);
+		COUNT += (unsigned char)padlen;
+		COUNT %= 64;
+		sha1_step(ctxt);
+		padstart = COUNT % 64;	/* should be 0 */
+		padlen = 64 - padstart;	/* should be 64 */
+	}
+	bzero(&ctxt->m.b8[padstart], padlen - 8);
+	COUNT += ((unsigned char)padlen - 8);
+	COUNT %= 64;
+#if BYTE_ORDER == BIG_ENDIAN
+	PUTPAD(ctxt->c.b8[0]); PUTPAD(ctxt->c.b8[1]);
+	PUTPAD(ctxt->c.b8[2]); PUTPAD(ctxt->c.b8[3]);
+	PUTPAD(ctxt->c.b8[4]); PUTPAD(ctxt->c.b8[5]);
+	PUTPAD(ctxt->c.b8[6]); PUTPAD(ctxt->c.b8[7]);
+#else
+	PUTPAD(ctxt->c.b8[7]); PUTPAD(ctxt->c.b8[6]);
+	PUTPAD(ctxt->c.b8[5]); PUTPAD(ctxt->c.b8[4]);
+	PUTPAD(ctxt->c.b8[3]); PUTPAD(ctxt->c.b8[2]);
+	PUTPAD(ctxt->c.b8[1]); PUTPAD(ctxt->c.b8[0]);
+#endif
+}
+
+void
+sha1_loop(struct sha1_ctxt *ctxt, const unsigned char *input, size_t len)
+{
+	size_t gaplen;
+	size_t gapstart;
+	size_t off;
+	size_t copysiz;
+
+	off = 0;
+
+	while (off < len) {
+		gapstart = COUNT % 64;
+		gaplen = 64 - gapstart;
+
+		copysiz = (gaplen < len - off) ? gaplen : len - off;
+		memcpy(&ctxt->m.b8[gapstart], &input[off], copysiz);
+		COUNT += (unsigned char)copysiz;
+		COUNT %= 64;
+		ctxt->c.b64[0] += copysiz * 8;
+		if (COUNT % 64 == 0)
+			sha1_step(ctxt);
+		off += copysiz;
+	}
+}
+
+void
+sha1_result(struct sha1_ctxt *ctxt, void *digest0)
+{
+	unsigned char *digest;
+
+	digest = (unsigned char *)digest0;
+	sha1_pad(ctxt);
+#if BYTE_ORDER == BIG_ENDIAN
+	memcpy(digest, &ctxt->h.b8[0], 20);
+#else
+	digest[0] = ctxt->h.b8[3]; digest[1] = ctxt->h.b8[2];
+	digest[2] = ctxt->h.b8[1]; digest[3] = ctxt->h.b8[0];
+	digest[4] = ctxt->h.b8[7]; digest[5] = ctxt->h.b8[6];
+	digest[6] = ctxt->h.b8[5]; digest[7] = ctxt->h.b8[4];
+	digest[8] = ctxt->h.b8[11]; digest[9] = ctxt->h.b8[10];
+	digest[10] = ctxt->h.b8[9]; digest[11] = ctxt->h.b8[8];
+	digest[12] = ctxt->h.b8[15]; digest[13] = ctxt->h.b8[14];
+	digest[14] = ctxt->h.b8[13]; digest[15] = ctxt->h.b8[12];
+	digest[16] = ctxt->h.b8[19]; digest[17] = ctxt->h.b8[18];
+	digest[18] = ctxt->h.b8[17]; digest[19] = ctxt->h.b8[16];
+#endif
+}
+
+/*
+ * This should look and work like the libcrypto implementation
+ */
+
+LWS_VISIBLE unsigned char *
+lws_SHA1(const unsigned char *d, size_t n, unsigned char *md)
+{
+	struct sha1_ctxt ctx;
+
+	_sha1_init(&ctx);
+	sha1_loop(&ctx, d, n);
+	sha1_result(&ctx, (void *)md);
+
+	return md;
+}
+
+#endif /*unsupported*/