mirror of
https://github.com/drasko/open-ameba.git
synced 2024-11-24 15:04:18 +00:00
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
#include <FreeRTOS.h>
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#include <task.h>
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#include <platform/platform_stdlib.h>
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#include <lwip/sockets.h>
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#include <polarssl/config.h>
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#include <polarssl/memory.h>
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#include <polarssl/ssl.h>
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#define SERVER_HOST "192.168.13.27"
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#define SERVER_PORT 443
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#define RESOURCE "/dummy100k.bin"
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static unsigned int arc4random(void)
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{
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unsigned int res = xTaskGetTickCount();
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static unsigned int seed = 0xDEADB00B;
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seed = ((seed & 0x007F00FF) << 7) ^
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((seed & 0x0F80FF00) >> 8) ^ // be sure to stir those low bits
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(res << 13) ^ (res >> 9); // using the clock too!
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return seed;
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}
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static void get_random_bytes(void *buf, size_t len)
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{
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unsigned int ranbuf;
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unsigned int *lp;
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int i, count;
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count = len / sizeof(unsigned int);
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lp = (unsigned int *) buf;
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for(i = 0; i < count; i ++) {
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lp[i] = arc4random();
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len -= sizeof(unsigned int);
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}
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if(len > 0) {
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ranbuf = arc4random();
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memcpy(&lp[i], &ranbuf, len);
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}
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}
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static int my_random(void *p_rng, unsigned char *output, size_t output_len)
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{
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get_random_bytes(output, output_len);
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return 0;
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}
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static void example_ssl_download_thread(void *param)
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{
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int server_fd = -1, ret;
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struct sockaddr_in server_addr;
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ssl_context ssl;
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// Delay to wait for IP by DHCP
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vTaskDelay(10000);
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printf("\nExample: SSL download\n");
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memory_set_own(pvPortMalloc, vPortFree);
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memset(&ssl, 0, sizeof(ssl_context));
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if((ret = net_connect(&server_fd, SERVER_HOST, SERVER_PORT)) != 0) {
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printf("ERROR: net_connect ret(%d)\n", ret);
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goto exit;
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}
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if((ret = ssl_init(&ssl)) != 0) {
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printf("ERRPR: ssl_init ret(%d)\n", ret);
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goto exit;
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}
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ssl_set_endpoint(&ssl, SSL_IS_CLIENT);
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ssl_set_authmode(&ssl, SSL_VERIFY_NONE);
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ssl_set_rng(&ssl, my_random, NULL);
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ssl_set_bio(&ssl, net_recv, &server_fd, net_send, &server_fd);
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if((ret = ssl_handshake(&ssl)) != 0) {
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printf("ERROR: ssl_handshake ret(-0x%x)", -ret);
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goto exit;
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}
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else {
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unsigned char buf[2048];
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int read_size = 0, resource_size = 0, content_len = 0, header_removed = 0;
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printf("SSL ciphersuite %s\n", ssl_get_ciphersuite(&ssl));
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sprintf(buf, "GET %s HTTP/1.1\r\nHost: %s\r\n\r\n", RESOURCE, SERVER_HOST);
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ssl_write(&ssl, buf, strlen(buf));
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while((read_size = ssl_read(&ssl, buf, sizeof(buf))) > 0) {
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if(header_removed == 0) {
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char *header = strstr(buf, "\r\n\r\n");
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if(header) {
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char *body, *content_len_pos;
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body = header + strlen("\r\n\r\n");
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*(body - 2) = 0;
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header_removed = 1;
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printf("\nHTTP Header: %s\n", buf);
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read_size = read_size - ((unsigned char *) body - buf);
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content_len_pos = strstr(buf, "Content-Length: ");
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if(content_len_pos) {
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content_len_pos += strlen("Content-Length: ");
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*(strstr(content_len_pos, "\r\n")) = 0;
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content_len = atoi(content_len_pos);
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}
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}
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else {
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printf("ERROR: HTTP header\n");
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goto exit;
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}
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}
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printf("read resource %d bytes\n", read_size);
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resource_size += read_size;
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}
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printf("final read size = %d bytes\n", read_size);
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printf("http content-length = %d bytes, download resource size = %d bytes\n", content_len, resource_size);
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}
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exit:
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if(server_fd != -1)
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net_close(server_fd);
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ssl_free(&ssl);
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vTaskDelete(NULL);
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}
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void example_ssl_download(void)
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{
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if(xTaskCreate(example_ssl_download_thread, ((const char*)"example_ssl_download_thread"), 2048, NULL, tskIDLE_PRIORITY + 1, NULL) != pdPASS)
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printf("\n\r%s xTaskCreate(init_thread) failed", __FUNCTION__);
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}
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