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Add http_get_ssl example

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Angus Gratton 2015-06-02 10:58:40 +10:00
parent 52d6bbea51
commit 93c3e1a53a
3 changed files with 345 additions and 0 deletions
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127
examples/http_get_ssl/FreeRTOSConfig.h Normal file
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/*
FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to distribute
>>! a combined work that includes FreeRTOS without being obliged to provide
>>! the source code for proprietary components outside of the FreeRTOS
>>! kernel.
FreeRTOS 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. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
/*-----------------------------------------------------------
* Application specific definitions.
*
* These definitions should be adjusted for your particular hardware and
* application requirements.
*
* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
*
* See http://www.freertos.org/a00110.html.
*----------------------------------------------------------*/
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 0
#define configUSE_TICK_HOOK 0
#define configCPU_CLOCK_HZ ( ( unsigned long ) 80000000 )
#define configTICK_RATE_HZ ( ( portTickType ) 100 )
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 15 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short )512 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 32 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_STATS_FORMATTING_FUNCTIONS 0
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 1
#define INCLUDE_xTaskGetIdleTaskHandle 1
#define INCLUDE_xTimerGetTimerDaemonTaskHandle 1
#define configCHECK_FOR_STACK_OVERFLOW 2
#define configUSE_MUTEXES 1
#define configUSE_TIMERS 1
#if configUSE_TIMERS
#define configTIMER_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define configTIMER_QUEUE_LENGTH (10)
#define configTIMER_TASK_STACK_DEPTH ( ( unsigned short ) 512 )
#endif
/* Co-routine definitions. */
#define configUSE_CO_ROUTINES 0
#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
/* Set the following definitions to 1 to include the API function, or zero
to exclude the API function. */
#define INCLUDE_vTaskPrioritySet 1
#define INCLUDE_uxTaskPriorityGet 1
#define INCLUDE_vTaskDelete 1
#define INCLUDE_vTaskCleanUpResources 0
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
/*set the #define for debug info*/
#define INCLUDE_xTaskGetCurrentTaskHandle 1
#define INCLUDE_uxTaskGetStackHighWaterMark 1
#endif /* FREERTOS_CONFIG_H */

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examples/http_get_ssl/Makefile Normal file
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TARGET=http_get
include ../../common.mk

216
examples/http_get_ssl/main.c Normal file
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#include "espressif/esp_common.h"
#include "FreeRTOS.h"
#include "task.h"
#include "lwip/err.h"
#include "lwip/sockets.h"
#include "lwip/sys.h"
#include "lwip/netdb.h"
#include "lwip/dns.h"
#include "ssl.h"
#include "espressif/sdk_prototypes.h"
#define WEB_SERVER "10.10.10.1"
#define WEB_PORT "8000"
#define WEB_URL "https://chainxor.org/"
/* FILL THESE IN!!!!!!!!!! */
#define WIFI_SSID "esptest"
#define WIFI_PASS "secret passphrase"
static void display_cipher(SSL *ssl);
static void display_session_id(SSL *ssl);
void http_get_task(void *pvParameters)
{
int successes = 0, failures = 0;
SSL_CTX *ssl_ctx;
uint32_t options = SSL_SERVER_VERIFY_LATER|SSL_DISPLAY_CERTS;
printf("HTTP get task starting...\r\n");
printf("free heap = %u\r\n", xPortGetFreeHeapSize());
if ((ssl_ctx = ssl_ctx_new(options, SSL_DEFAULT_CLNT_SESS)) == NULL)
{
printf("Error: SSL Client context is invalid\n");
while(1) {}
}
printf("Got SSL context.");
while(1) {
const struct addrinfo hints = {
.ai_family = AF_INET,
.ai_socktype = SOCK_STREAM,
};
struct addrinfo *res;
printf("top of loop, free heap = %u\r\n", xPortGetFreeHeapSize());
printf("Running DNS lookup for %s...\r\n", WEB_SERVER);
int err = getaddrinfo(WEB_SERVER, WEB_PORT, &hints, &res);
if(err != 0 || res == NULL) {
printf("DNS lookup failed err=%d res=%p\r\n", err, res);
if(res)
freeaddrinfo(res);
vTaskDelay(1000 / portTICK_RATE_MS);
failures++;
continue;
}
/* Note: inet_ntoa is non-reentrant, look at ipaddr_ntoa_r for "real" code */
struct in_addr *addr = &((struct sockaddr_in *)res->ai_addr)->sin_addr;
printf("DNS lookup succeeded. IP=%s\r\n", inet_ntoa(*addr));
int s = socket(res->ai_family, res->ai_socktype, 0);
if(s < 0) {
printf("... Failed to allocate socket.\r\n");
freeaddrinfo(res);
vTaskDelay(1000 / portTICK_RATE_MS);
failures++;
continue;
}
printf("... allocated socket\r\n");
if(connect(s, res->ai_addr, res->ai_addrlen) != 0) {
close(s);
freeaddrinfo(res);
printf("... socket connect failed.\r\n");
vTaskDelay(4000 / portTICK_RATE_MS);
failures++;
continue;
}
printf("... connected. starting TLS session...\r\n");
freeaddrinfo(res);
SSL *ssl = ssl_client_new(ssl_ctx, s, NULL, 0);
printf("initial status %p %d\r\n", ssl, ssl_handshake_status(ssl));
if((err = ssl_handshake_status(ssl)) != SSL_OK) {
ssl_free(ssl);
close(s);
printf("SSL handshake failed. :( %d\r\n", err);
vTaskDelay(4000 / portTICK_RATE_MS);
failures++;
continue;
}
const char *common_name = ssl_get_cert_dn(ssl,
SSL_X509_CERT_COMMON_NAME);
if (common_name)
{
printf("Common Name:\t\t\t%s\n", common_name);
}
display_session_id(ssl);
display_cipher(ssl);
const char *req =
"GET "WEB_URL"\r\n"
"User-Agent: esp-open-rtos/0.1 esp8266\r\n"
"\r\n";
if (ssl_write(ssl, (uint8_t *)req, strlen(req) + 1) < 0) {
printf("... socket send failed\r\n");
ssl_free(ssl);
close(s);
vTaskDelay(4000 / portTICK_RATE_MS);
failures++;
continue;
}
printf("... socket send success\r\n");
uint8_t *recv_buf;
int r;
do {
r = ssl_read(ssl, &recv_buf);
for(int i = 0; i < r; i++)
printf("%c", recv_buf[i]);
} while(r > 0);
printf("... done reading from socket. Last read return=%d errno=%d\r\n", r, errno);
if(r != 0)
failures++;
else
successes++;
ssl_free(ssl);
close(s);
printf("successes = %d failures = %d\r\n", successes, failures);
for(int countdown = 10; countdown >= 0; countdown--) {
printf("%d... ", countdown);
vTaskDelay(1000 / portTICK_RATE_MS);
}
printf("\r\nStarting again!\r\n");
}
}
void user_init(void)
{
sdk_uart_div_modify(0, UART_CLK_FREQ / 115200);
printf("SDK version:%s\n", sdk_system_get_sdk_version());
struct sdk_station_config config = {
.ssid = WIFI_SSID,
.password = WIFI_PASS,
};
/* required to call wifi_set_opmode before station_set_config */
sdk_wifi_set_opmode(STATION_MODE);
sdk_wifi_station_set_config(&config);
xTaskCreate(&http_get_task, (signed char *)"get_task", 2048, NULL, 2, NULL);
}
/**
* Display what session id we have.
*/
static void display_session_id(SSL *ssl)
{
int i;
const uint8_t *session_id = ssl_get_session_id(ssl);
int sess_id_size = ssl_get_session_id_size(ssl);
if (sess_id_size > 0)
{
printf("-----BEGIN SSL SESSION PARAMETERS-----\n");
for (i = 0; i < sess_id_size; i++)
{
printf("%02x", session_id[i]);
}
printf("\n-----END SSL SESSION PARAMETERS-----\n");
}
}
/**
* Display what cipher we are using
*/
static void display_cipher(SSL *ssl)
{
printf("CIPHER is ");
switch (ssl_get_cipher_id(ssl))
{
case SSL_AES128_SHA:
printf("AES128-SHA");
break;
case SSL_AES256_SHA:
printf("AES256-SHA");
break;
case SSL_RC4_128_SHA:
printf("RC4-SHA");
break;
case SSL_RC4_128_MD5:
printf("RC4-MD5");
break;
default:
printf("Unknown - %d", ssl_get_cipher_id(ssl));
break;
}
printf("\n");
}