CLI parsing accepts short commands

[dajtxx]

For example mqtt log will execute as mqtt login, and mqtt logo will run mqtt logout.

See this line

The string comparison only goes as far as the input string.

[kebab01]

The issue is in the way we are using the strncmp function. Take the following example from the ftp cli:

if (!strncmp("login", param, paramLen)) {
            ...
}

if the user types ftp lo, this will match against ftp login as paramLen will be the length of the parameter the user typed in and not the length of the command we want to match against. This means that strncmp will compare lo against the first 2 characters of login, successfully matching.

The following change fixes this:

if (!strncmp("login", param, strlen("login"))) {
            ...
}