ImgFS is a project designed to develop a large program in C that focuses on system-level programming. The project involved creating a command-line utility to manage images, inspired by Facebook's "Haystack" system.

This project was developed as part of CS202: Computer Systems at École Polytechnique Fédérale de Lausanne (EPFL).

• libssl-dev: Cryptographic library used to compute image "hash"-codes.
• libvips-dev: Library to process images from C code.
• libjson-c-dev: Library to process JSON content from C code.

• From the command line:

# For help
./imgfscmd help

# Create a new ImgFS file
./imgfscmd create <ImgFS Filename> 

# Insert an image into the file (data samples available in done/tests/data)
./imgfscmd insert <ImgFS Filename>  <Image ID>  <path/to/image>

# Read an image from the imgFS and save it to a file
./imgfscmd read <ImgFS filename>  <Image ID> [original | orig | thumbnail | thumb | small]

# Delete an image imageID from the ImgFS file
./imgfscmd delete <ImgFS filename>  <Image ID>

# Launching the server 
./imgfs_server <ImgFS filename>

In http_prot.c:

• http_parse_headers
• get_next_token

Both of which help http_parse_messageparse an HTTP message (see code documentation for more information).

In Multiple files:

• safe_free

Helper function to better handle cleanup of pointers (see code documentation for required arguments and information).

In tcp-test-client.c:

• send_file

Helper function for cleaner code that sends a file to a server

In tcp-test-server.c:

• receive_file

Helper function for cleaner code that receives a file over a TCP connection