fix(esp-tls): Use 64 bit variable for time instead of 32 bit

    Use appropriate API available on respective platform for obtaining
    time
    Closes espressif#13593

Author: AdityaHPatwardhan

components/esp-tls/CMakeLists.txt

@@ -1,4 +1,4 @@
-set(srcs esp_tls.c esp-tls-crypto/esp_tls_crypto.c esp_tls_error_capture.c)
+set(srcs esp_tls.c esp-tls-crypto/esp_tls_crypto.c esp_tls_error_capture.c esp_tls_platform_port.c)
 if(CONFIG_ESP_TLS_USING_MBEDTLS)
     list(APPEND srcs
         "esp_tls_mbedtls.c")
@@ -9,15 +9,15 @@ if(CONFIG_ESP_TLS_USING_WOLFSSL)
         "esp_tls_wolfssl.c")
 endif()
 
-set(priv_req http_parser)
+set(priv_req http_parser esp_timer)
 if(NOT ${IDF_TARGET} STREQUAL "linux")
     list(APPEND priv_req lwip)
 endif()
 
 idf_component_register(SRCS "${srcs}"
                     INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR} esp-tls-crypto
                     PRIV_INCLUDE_DIRS "private_include"
-                    # mbedtls is public requirements becasue esp_tls.h
+                    # mbedtls is public requirements because esp_tls.h
                     # includes mbedtls header files.
                     REQUIRES mbedtls
                     PRIV_REQUIRES ${priv_req})

components/esp-tls/esp_tls.c

@@ -16,6 +16,7 @@
 #include "sdkconfig.h"
 #include "esp_tls.h"
 #include "esp_tls_private.h"
+#include "esp_tls_platform_port.h"
 #include "esp_tls_error_capture_internal.h"
 #include <fcntl.h>
 #include <errno.h>
@@ -537,9 +538,8 @@ int esp_tls_conn_new_sync(const char *hostname, int hostlen, int port, const esp
     if (!cfg || !tls || !hostname || hostlen < 0) {
         return -1;
     }
-    struct timeval time = {};
-    gettimeofday(&time, NULL);
-    uint32_t start_time_ms = (time.tv_sec * 1000) + (time.tv_usec / 1000);
+    uint64_t start_time_us;
+    start_time_us = esp_tls_get_platform_time();
     while (1) {
         int ret = esp_tls_low_level_conn(hostname, hostlen, port, cfg, tls);
         if (ret == 1) {
@@ -548,10 +548,8 @@ int esp_tls_conn_new_sync(const char *hostname, int hostlen, int port, const esp
             ESP_LOGE(TAG, "Failed to open new connection");
             return -1;
         } else if (ret == 0 && cfg->timeout_ms >= 0) {
-            gettimeofday(&time, NULL);
-            uint32_t current_time_ms = (time.tv_sec * 1000) + (time.tv_usec / 1000);
-            uint32_t elapsed_time_ms = current_time_ms - start_time_ms;
-            if (elapsed_time_ms >= cfg->timeout_ms) {
+            uint64_t elapsed_time_us = esp_tls_get_platform_time() - start_time_us;
+            if ((elapsed_time_us / 1000) >= cfg->timeout_ms) {
                 ESP_LOGW(TAG, "Failed to open new connection in specified timeout");
                 ESP_INT_EVENT_TRACKER_CAPTURE(tls->error_handle, ESP_TLS_ERR_TYPE_ESP, ESP_ERR_ESP_TLS_CONNECTION_TIMEOUT);
                 return 0;

components/esp-tls/esp_tls_platform_port.c

@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include "sdkconfig.h"
+
+#if CONFIG_IDF_TARGET_LINUX
+#include <sys/time.h>
+#include <time.h>
+#else
+#include "esp_timer.h"
+#endif
+
+uint64_t esp_tls_get_platform_time(void)
+{
+#if CONFIG_IDF_TARGET_LINUX
+    // Use gettimeofday for Linux/MacOS, Ideally esp_timer should be used but it is not implemented for Linux/MacOS.
+    struct timeval time = {};
+    gettimeofday(&time, NULL);
+    uint64_t curr_time = ((uint64_t)time.tv_sec * 1000000) + (time.tv_usec);
+    return curr_time;
+#else
+    // For all other esp targets use esp_timer
+    return esp_timer_get_time();
+#endif
+}

components/esp-tls/private_include/esp_tls_platform_port.h

@@ -0,0 +1,24 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// This file contains APIs which have different implementation across different targets e.g., Linux, ESP.
+
+#pragma once
+
+#include <stdint.h>
+
+/* @brief
+ *
+ *      Behaviour
+ *      Linux:
+ *          Returns the system time (64 bit) using gettimeofday in microseconds. This shall get changed if someone changes the system time using settimeofday
+ *      ESP targets:
+ *          Returns the time (64 bit) since boot obtained using esp_timer_get_time() in microseconds
+ * @return
+ *      time    uint64_t bit time value
+ *
+ */
+uint64_t esp_tls_get_platform_time(void);