C HTTP Client for RESTful Web Service

Overview

This project implements a command-line HTTP client in C that interacts with a RESTful web service for managing users, movies, and movie collections. The client uses POSIX sockets to send HTTP requests, handles session cookies and JWT-based authentication, and parses JSON payloads.

Program Flow

1. Establish connection with the server.
2. Read user command from stdin and dispatch to the corresponding handler.
3. Execute operations until the exit command is received.
4. Close the connection and free allocated resources.

Features

Admin Functions

• login_admin: Prompt for admin credentials, send POST /api/v1/tema/admin/login, store session cookie on success.
• add_user: Read new user details, send POST /api/v1/tema/admin/users with session cookie.
• get_users: Send GET /api/v1/tema/admin/users with session cookie to list all users.
• delete_user: Prompt for username, send DELETE /api/v1/tema/admin/users/:username.
• logout_admin: Send GET /api/v1/tema/admin/logout, clear session cookie.

User Functions

Authentication & Library Access

• login: Prompt for user credentials, send POST /api/v1/tema/user/login, store session cookie.
• get_access: Send GET /api/v1/tema/library/access with session cookie, store returned JWT.
• logout: Send GET /api/v1/tema/user/logout, clear session cookie and JWT.

Movie Management

• get_movies: GET /api/v1/tema/library/movies with session cookie and JWT.
• add_movie: Prompt for title, year, description, rating; send POST /api/v1/tema/library/movies.
• get_movie: Prompt for movie ID; GET /api/v1/tema/library/movies/:movieId.
• update_movie: Prompt for ID and updated details; PUT /api/v1/tema/library/movies/:movieId.
• delete_movie: Prompt for movie ID; DELETE /api/v1/tema/library/movies/:movieId.

Collection Management

• get_collections: GET /api/v1/tema/library/collections to list collections.
• add_collection: Create new collection via POST /api/v1/tema/library/collections, then add movies.
• delete_collection: Remove collection with DELETE /api/v1/tema/library/collections/:collectionId.
• add_movie_to_collection: Prompt for collection ID and movie ID; POST /api/v1/tema/library/collections/:collectionId.
• delete_movie_from_collection: Prompt for collection ID and movie ID; DELETE /api/v1/tema/library/collections/:collectionId/:movieId.

Helper Functions

• contains_spaces: Check for spaces in usernames or passwords.
• check_for_error_and_print: Scan server response for “error” and display details.
• get_session_cookie: Extract session cookie from server response.
• get_jwt: Extract JWT token from server response.
• parse_and_print_users: Extract and display user list from JSON.
• parse_and_print_movies: Extract and display movie list from JSON.
• parse_and_print_movie: Extract and display a single movie’s details.
• parse_and_print_collections_simple: Extract and display collection IDs and titles.
• parse_and_print_collection_details: Extract and display full collection details.

Additional Functions

• compute_delete_request: Build DELETE requests.
• compute_put_request: Build PUT requests.

All compute* functions accept an optional JWT parameter for secure calls._

Prerequisites

• GCC or compatible C compiler
• POSIX-compliant environment (Linux, macOS)