alexscott64 / userauth Goto Github PK

Project #3: Maps and Legends

This is an authentication service that keeps track of usernames and passwords in a hash map. Note that it does not keep them stored once the program exits.

It also has a user-facing commands and debug commands.

USER-FACING COMMANDS:

CREATE username password Create a new username/password combination and stores it in the program's collection. If successful, the output is CREATED. If the username is already stored in the collection, no change is made and the output is EXISTS.

LOGIN username password Checks a username/password combination to see if it is valid. A username/password combination is valid if it exists (i.e., the username is in the collection and is associated with the password), in which case the output is SUCCEEDED. If the username/password combination does not exist, the output is FAILED.

REMOVE username Removes the username/password combination with the given username, if it exists. If so, the output is REMOVED. If no username/password combination with the given username exists, the output is NONEXISTENT.

CLEAR Removes all username/password combinations from the service. The output is CLEARED (even if there were no username/password combinations at the time).

QUIT The output of this command is GOODBYE. Once this command has been processed, the program should end.

DEBUG COMMANDS:

DEBUG ON Makes the other debug commands available. Before issuing this command, all other debug commands should be considered invalid. If debug commands were not already on, the output is ON NOW; if they were, the output is ON ALREADY. While in debug mode, all of the user-facing commands remain available.

DEBUG OFF Makes the other debug commands unavailable. After issuing this command, all debug commands should be considered invalid except for DEBUG ON. If debug commands were already on, the output is OFF NOW; if they weren't already on, the output is OFF ALREADY.

LOGIN COUNT The output is the number of username/password combinations currently being stored.

BUCKET COUNT The output is the number of buckets in the hash table at present.

LOAD FACTOR The output is the load factor of the hash table at present.

MAX BUCKET SIZE The output is the length of the largest bucket (i.e., the one whose linked list contains the largest number of elements) in the hash table.