1/*
2 * libwebsockets - small server side websockets and web server implementation
3 *
4 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 */
24
25#ifndef _WINSOCK_DEPRECATED_NO_WARNINGS
26#define _WINSOCK_DEPRECATED_NO_WARNINGS
27#endif
28#include "private-lib-core.h"
29
30int
31lws_plat_drop_app_privileges(struct lws_context *context, int actually_set)
32{
33	return 0;
34}
35
36int
37lws_plat_context_early_init(void)
38{
39	WORD wVersionRequested;
40	WSADATA wsaData;
41	int err;
42
43	/* Use the MAKEWORD(lowbyte, highbyte) macro from Windef.h */
44	wVersionRequested = MAKEWORD(2, 2);
45
46	err = WSAStartup(wVersionRequested, &wsaData);
47	if (!err)
48		return 0;
49	/*
50	 * Tell the user that we could not find a usable
51	 * Winsock DLL
52	 */
53	lwsl_err("WSAStartup failed with error: %d\n", err);
54
55	return 1;
56}
57
58#if defined(LWS_WITH_PLUGINS)
59static int
60protocol_plugin_cb(struct lws_plugin *pin, void *each_user)
61{
62	struct lws_context *context = (struct lws_context *)each_user;
63	const lws_plugin_protocol_t *plpr =
64			(const lws_plugin_protocol_t *)pin->hdr;
65
66	context->plugin_protocol_count += plpr->count_protocols;
67	context->plugin_extension_count += plpr->count_extensions;
68
69	return 0;
70}
71#endif
72
73int
74lws_plat_init(struct lws_context *context,
75	      const struct lws_context_creation_info *info)
76{
77	struct lws_context_per_thread *pt = &context->pt[0];
78	int i, n = context->count_threads;
79
80#if defined(LWS_WITH_MBEDTLS)
81	{
82		int n;
83
84		/* initialize platform random through mbedtls */
85		mbedtls_entropy_init(&context->mec);
86		mbedtls_ctr_drbg_init(&context->mcdc);
87
88		n = mbedtls_ctr_drbg_seed(&context->mcdc, mbedtls_entropy_func,
89					  &context->mec, NULL, 0);
90		if (n)
91			lwsl_err("%s: mbedtls_ctr_drbg_seed() returned 0x%x\n",
92				 __func__, n);
93#if 0
94		else {
95			uint8_t rtest[16];
96			lwsl_notice("%s: started drbg\n", __func__);
97			if (mbedtls_ctr_drbg_random(&context->mcdc, rtest,
98							sizeof(rtest)))
99				lwsl_err("%s: get random failed\n", __func__);
100			else
101				lwsl_hexdump_notice(rtest, sizeof(rtest));
102		}
103#endif
104	}
105#endif
106
107	for (i = 0; i < FD_HASHTABLE_MODULUS; i++) {
108		context->fd_hashtable[i].wsi =
109			lws_zalloc(sizeof(struct lws*) * context->max_fds,
110				   "win hashtable");
111
112		if (!context->fd_hashtable[i].wsi)
113			return -1;
114	}
115
116	while (n--) {
117		pt->fds_count = 0;
118
119		pt++;
120	}
121
122	context->fd_random = 0;
123
124#if defined(LWS_WITH_PLUGINS)
125	if (info->plugin_dirs)
126		lws_plat_plugins_init(&context->plugin_list, info->plugin_dirs,
127				      "lws_protocol_plugin",
128				      protocol_plugin_cb, context);
129#endif
130
131	return 0;
132}
133
134void
135lws_plat_context_early_destroy(struct lws_context *context)
136{
137
138}
139
140void
141lws_plat_context_late_destroy(struct lws_context *context)
142{
143	int n;
144
145#ifdef LWS_WITH_PLUGINS
146	if (context->plugin_list)
147		lws_plugins_destroy(&context->plugin_list, NULL, NULL);
148#endif
149
150	for (n = 0; n < FD_HASHTABLE_MODULUS; n++) {
151		if (context->fd_hashtable[n].wsi)
152			lws_free(context->fd_hashtable[n].wsi);
153	}
154
155	WSACleanup();
156}
157