--- /dev/null
+/* Copyright (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (net_socket.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * 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.
+ */
+
+#include <string.h>
+#include <net/net_compat.h>
+#include <net/net_socket.h>
+#include <net/net_socket_ssl.h>
+
+#if defined(HAVE_BUILTINMBEDTLS)
+#include "../../deps/mbedtls/mbedtls/config.h"
+#include "../../deps/mbedtls/mbedtls/certs.h"
+#include "../../deps/mbedtls/mbedtls/debug.h"
+#include "../../deps/mbedtls/mbedtls/platform.h"
+#include "../../deps/mbedtls/mbedtls/net_sockets.h"
+#include "../../deps/mbedtls/mbedtls/ssl.h"
+#include "../../deps/mbedtls/mbedtls/ctr_drbg.h"
+#include "../../deps/mbedtls/mbedtls/entropy.h"
+#else
+#include <mbedtls/config.h>
+#include <mbedtls/certs.h>
+#include <mbedtls/debug.h>
+#include <mbedtls/platform.h>
+#include <mbedtls/net_sockets.h>
+#include <mbedtls/ssl.h>
+#include <mbedtls/ctr_drbg.h>
+#include <mbedtls/entropy.h>
+#endif
+
+/* Not part of the mbedtls upstream source */
+#include "../../deps/mbedtls/cacert.h"
+
+#define DEBUG_LEVEL 0
+
+struct ssl_state
+{
+ mbedtls_net_context net_ctx;
+ mbedtls_ssl_context ctx;
+ mbedtls_entropy_context entropy;
+ mbedtls_ctr_drbg_context ctr_drbg;
+ mbedtls_ssl_config conf;
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+ mbedtls_x509_crt ca;
+#endif
+ const char *domain;
+};
+
+static void ssl_debug(void *ctx, int level,
+ const char *file, int line,
+ const char *str)
+{
+ fprintf((FILE*)ctx, "%s:%04d: %s", file, line, str);
+ fflush((FILE*)ctx);
+}
+
+void* ssl_socket_init(int fd, const char *domain)
+{
+ static const char *pers = "libretro";
+ struct ssl_state *state = (struct ssl_state*)calloc(1, sizeof(*state));
+
+ state->domain = domain;
+
+#if defined(MBEDTLS_DEBUG_C)
+ mbedtls_debug_set_threshold(DEBUG_LEVEL);
+#endif
+
+ mbedtls_net_init(&state->net_ctx);
+ mbedtls_ssl_init(&state->ctx);
+ mbedtls_ssl_config_init(&state->conf);
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+ mbedtls_x509_crt_init(&state->ca);
+#endif
+ mbedtls_ctr_drbg_init(&state->ctr_drbg);
+ mbedtls_entropy_init(&state->entropy);
+
+ state->net_ctx.fd = fd;
+
+ if (mbedtls_ctr_drbg_seed(&state->ctr_drbg, mbedtls_entropy_func, &state->entropy, (const unsigned char*)pers, strlen(pers)) != 0)
+ goto error;
+
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+ if (mbedtls_x509_crt_parse(&state->ca, (const unsigned char*)cacert_pem, sizeof(cacert_pem) / sizeof(cacert_pem[0])) < 0)
+ goto error;
+#endif
+
+ return state;
+
+error:
+ if (state)
+ free(state);
+ return NULL;
+}
+
+int ssl_socket_connect(void *state_data,
+ void *data, bool timeout_enable, bool nonblock)
+{
+ int ret, flags;
+ struct ssl_state *state = (struct ssl_state*)state_data;
+
+ if (timeout_enable)
+ {
+ if (!socket_connect_with_timeout(state->net_ctx.fd, data, 5000))
+ return -1;
+ /* socket_connect_with_timeout makes the socket non-blocking. */
+ if (!socket_set_block(state->net_ctx.fd, true))
+ return -1;
+ }
+ else
+ {
+ if (socket_connect(state->net_ctx.fd, data))
+ return -1;
+ }
+
+ if (mbedtls_ssl_config_defaults(&state->conf,
+ MBEDTLS_SSL_IS_CLIENT,
+ MBEDTLS_SSL_TRANSPORT_STREAM,
+ MBEDTLS_SSL_PRESET_DEFAULT) != 0)
+ return -1;
+
+ mbedtls_ssl_conf_authmode(&state->conf, MBEDTLS_SSL_VERIFY_OPTIONAL);
+ mbedtls_ssl_conf_ca_chain(&state->conf, &state->ca, NULL);
+ mbedtls_ssl_conf_rng(&state->conf, mbedtls_ctr_drbg_random, &state->ctr_drbg);
+ mbedtls_ssl_conf_dbg(&state->conf, ssl_debug, stderr);
+
+ if (mbedtls_ssl_setup(&state->ctx, &state->conf) != 0)
+ return -1;
+
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+ if (mbedtls_ssl_set_hostname(&state->ctx, state->domain) != 0)
+ return -1;
+#endif
+
+ mbedtls_ssl_set_bio(&state->ctx, &state->net_ctx, mbedtls_net_send, mbedtls_net_recv, NULL);
+
+ while ((ret = mbedtls_ssl_handshake(&state->ctx)) != 0)
+ {
+ if (ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE)
+ return -1;
+ }
+
+ if ((flags = mbedtls_ssl_get_verify_result(&state->ctx)) != 0)
+ {
+ char vrfy_buf[512];
+ mbedtls_x509_crt_verify_info(vrfy_buf, sizeof(vrfy_buf), " ! ", flags);
+ }
+
+ return state->net_ctx.fd;
+}
+
+ssize_t ssl_socket_receive_all_nonblocking(void *state_data,
+ bool *error, void *data_, size_t size)
+{
+ ssize_t ret;
+ struct ssl_state *state = (struct ssl_state*)state_data;
+ const uint8_t *data = (const uint8_t*)data_;
+ /* mbedtls_ssl_read wants non-const data but it only reads it, so this cast is safe */
+
+ mbedtls_net_set_nonblock(&state->net_ctx);
+
+ ret = mbedtls_ssl_read(&state->ctx, (unsigned char*)data, size);
+
+ if (ret > 0)
+ return ret;
+
+ if (ret == 0)
+ {
+ /* Socket closed */
+ *error = true;
+ return -1;
+ }
+
+ if (isagain((int)ret) || ret == MBEDTLS_ERR_SSL_WANT_READ)
+ return 0;
+
+ *error = true;
+ return -1;
+}
+
+int ssl_socket_receive_all_blocking(void *state_data,
+ void *data_, size_t size)
+{
+ struct ssl_state *state = (struct ssl_state*)state_data;
+ const uint8_t *data = (const uint8_t*)data_;
+
+ mbedtls_net_set_block(&state->net_ctx);
+
+ for (;;)
+ {
+ /* mbedtls_ssl_read wants non-const data but it only reads it,
+ * so this cast is safe */
+ int ret = mbedtls_ssl_read(&state->ctx, (unsigned char*)data, size);
+
+ if ( ret == MBEDTLS_ERR_SSL_WANT_READ ||
+ ret == MBEDTLS_ERR_SSL_WANT_WRITE)
+ continue;
+
+ if (ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)
+ break;
+
+ if (ret == 0)
+ break; /* normal EOF */
+
+ if (ret < 0)
+ return -1;
+ }
+
+ return 1;
+}
+
+int ssl_socket_send_all_blocking(void *state_data,
+ const void *data_, size_t size, bool no_signal)
+{
+ int ret;
+ struct ssl_state *state = (struct ssl_state*)state_data;
+ const uint8_t *data = (const uint8_t*)data_;
+
+ mbedtls_net_set_block(&state->net_ctx);
+
+ while ((ret = mbedtls_ssl_write(&state->ctx, data, size)) <= 0)
+ {
+ if ( ret != MBEDTLS_ERR_SSL_WANT_READ &&
+ ret != MBEDTLS_ERR_SSL_WANT_WRITE)
+ return false;
+ }
+
+ return true;
+}
+
+ssize_t ssl_socket_send_all_nonblocking(void *state_data,
+ const void *data_, size_t size, bool no_signal)
+{
+ int ret;
+ ssize_t sent = size;
+ struct ssl_state *state = (struct ssl_state*)state_data;
+ const uint8_t *data = (const uint8_t*)data_;
+
+ mbedtls_net_set_nonblock(&state->net_ctx);
+
+ ret = mbedtls_ssl_write(&state->ctx, data, size);
+
+ if (ret <= 0)
+ return -1;
+
+ return sent;
+}
+
+void ssl_socket_close(void *state_data)
+{
+ struct ssl_state *state = (struct ssl_state*)state_data;
+
+ mbedtls_ssl_close_notify(&state->ctx);
+
+ socket_close(state->net_ctx.fd);
+}
+
+void ssl_socket_free(void *state_data)
+{
+ struct ssl_state *state = (struct ssl_state*)state_data;
+
+ if (!state)
+ return;
+
+ mbedtls_ssl_free(&state->ctx);
+ mbedtls_ssl_config_free(&state->conf);
+ mbedtls_ctr_drbg_free(&state->ctr_drbg);
+ mbedtls_entropy_free(&state->entropy);
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+ mbedtls_x509_crt_free(&state->ca);
+#endif
+
+ free(state);
+}
notaz.gp2x.de / pcsx_rearmed.git / blobdiff