README

Here are the steps for installation process of client-server app written in c

Installation process of server-side app

• Installing PostgreSQL Database
• Configuring PostgreSQL
• Linking libpq libraries for PostgreSQL in C

1. Installing PostgreSQL?

First we will start with installing PostgreSQL

Open terminal:

sudo apt install postgresql-9.6 postgresql-client-9.6  postgresql-client-common libpq-dev postgresql-common postgresql-contrib-9.6 postgresql-server-dev-9.6 postgresql-doc-9.6

2. Cofiguring PostgreSQL?

After installation, execute following commands in terminal

sudo su postgres
psql
CREATE DATABASE "OCTS";
CREATE USER octs WITH PASSWORD 'OCTSIUTOSPROJECT2017';
ALTER USER octs WITH SUPERUSER;

3. Linking process with PostgreSQL

Open the project source directory and you will see cmake file CMakeLists.txt. Build this file with cmake, if you are using CLion, then open CMake tool window and click Reload CMake Project

When you are executing server application first time, call run_migrations() function to create all table relations of the project.

Also if you look inside CMakeLists.txt file, there are two executable files for client and server execution, so if you configure running configuration correctly, you can run both client-server inside one project.

4. Database hint

If you want to better manipulate your database instances, install DataGrip by JetBrains.

Now your server-side app is ready to be compiled and executed

5. Generating token

char *token;
token=generate_token();

6. Send message and Send file

• Send message

struct Client *file_client = new(Client, FILE_SERVER_LISTEN_PORT);
cJSON *params = cJSON_CreateObject();
//Add values to params json object
cJSON *response = (cJSON *) send_message(client, method_id, params);

• Send file

struct Server *file_server = new(Server, FILE_SERVER_LISTEN_PORT);
cJSON *response = (cJSON *) send_file(file_client,
                                          "/Users/tom1/Documents/Subject files/OS/Project/octs/client/client/client.c",
                                          "client.c");