[Draft] Refactoring.

CMakeLists.txt

@@ -4,11 +4,6 @@
 cmake_minimum_required(VERSION 3.19)
 project(sst-lib VERSION 1.0.0 LANGUAGES C)
 
-# Check `openssl version -d` and copy the path to OPENSSL_ROOT_DIR
-if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
-  set(OPENSSL_ROOT_DIR "/usr/local/lib64")
-endif()
-
 find_package(OpenSSL REQUIRED)
 find_package(Threads REQUIRED)
 
@@ -33,13 +28,19 @@ target_include_directories(sst-c-api PUBLIC
 # Ensure OpenSSL is installed along with sst-c-api
 install(FILES ${OPENSSL_LIBRARIES} DESTINATION lib)
 
-# Compiler flags
-if(MSVC)
-  target_compile_options(sst-c-api PUBLIC /W4 /WX)
-elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
-# Exclude errors, because some can use GNU-specific variadic arguments. This is done for only compiling the SST library.
-else()
-  target_compile_options(sst-c-api PUBLIC -Wall -Wextra -Wpedantic -Werror)
+# Set DEBUG flag for Debug builds
+if(CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "DEBUG")
+  message(STATUS "Enabling DEBUG flag")
+  target_compile_definitions(sst-c-api PUBLIC DEBUG=1)
+
+  # Compiler flags
+  if(MSVC)
+    target_compile_options(sst-c-api PUBLIC /W4 /WX)
+  elseif(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+  # Exclude errors, because some can use GNU-specific variadic arguments. This is done for only compiling the SST library.
+  else()
+    target_compile_options(sst-c-api PUBLIC -Wall -Wextra -Wpedantic -Werror)
+  endif()
 endif()
 
 # Install the library

README.md

@@ -55,36 +55,16 @@ c_common -> c_crypto -> c_secure_comm -> c_api -> entity_client, entity_server
 -   Input is the struct config.
 -   Returns struct SST_session_ctx_t
 
-**void \*receive_thread()**
-
--   Creates a receive_thread and prints the received messages.
--   Usage:
-
-```
-pthread_t thread;
-pthread_create(&thread, NULL, &receive_thread, (void \*)session_ctx);
-```
-
-**void receive_message()**
-
--   Receives messages and print them.
-
 **int read_secure_message(int socket, unsigned char *buf, unsigned int buf_length, unsigned char *plaintext, SST_session_ctx_t *session_ctx)**
 
 - `read_secure_message` checks the message header if it is a `SECURE_COMM_MSG`, and fills the buffer with the received message.
 - Input is the connected socket, pointer of the buffer, and the given buffer's length (not the received message)
 - This function does not decrypt the message, returns the message as **not decrypted.**
 - Returns the length of the not decrypted message.
 
+**int SST_write()**
 
-**unsigned char * return_decrypted_buf()**
-
--   The user can 
-- Returns the decrypted buffer, and must free() after use.
-
-**int send_secure_message()**
-
--   `send_secure_message()` is a function that sends a message with secure communication to the server by encrypting it with the session key.
+-   `SST_write()` is a function that sends a message with secure communication to the server by encrypting it with the session key.
 - It recursively `write()`s until it sends the total message length.
 - Input includes message, length of message, and session_ctx struct.
 - Returns the bytes written if success, and -1 if failure.