mirror of
https://libwebsockets.org/repo/libwebsockets
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105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*
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* libwebsockets - small server side websockets and web server implementation
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*
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* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "private-lib-core.h"
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/*
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* Normally you don't want this, use lws_sul instead inside the event loop.
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* But sometimes for drivers it makes sense, so there's an internal-only
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* crossplatform api for it.
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*/
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void
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lws_msleep(unsigned int ms)
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{
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vTaskDelay(portTICK_PERIOD_MS > ms ? 1 : ms / portTICK_PERIOD_MS);
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}
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lws_usec_t
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lws_now_usecs(void)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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return ((unsigned long long)tv.tv_sec * 1000000LL) + tv.tv_usec;
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}
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size_t
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lws_get_random(struct lws_context *context, void *buf, size_t len)
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{
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#if defined(LWS_WITH_ESP32)
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uint8_t *pb = buf;
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while (len) {
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uint32_t r = esp_random();
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uint8_t *p = (uint8_t *)&r;
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int b = 4;
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if (len < (size_t)b)
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b = len;
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len -= b;
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while (b--)
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*pb++ = p[b];
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}
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return pb - (uint8_t *)buf;
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#else
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#if defined(LWS_WITH_MBEDTLS)
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int n;
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n = mbedtls_ctr_drbg_random(&context->mcdc, buf, len);
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if (!n)
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return len;
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/* failed */
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lwsl_err("%s: mbedtls_ctr_drbg_random returned 0x%x\n", __func__, n);
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#endif
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return 0;
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#endif
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}
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void lwsl_emit_syslog(int level, const char *line)
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{
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lwsl_emit_stderr(level, line);
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}
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int
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lws_plat_drop_app_privileges(struct lws_context *context, int actually_init)
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{
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return 0;
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}
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int
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lws_plat_recommended_rsa_bits(void)
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{
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/*
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* 2048-bit key generation takes up to a minute on ESP32, 4096
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* is like 15 minutes +
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*/
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return 2048;
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}
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