.sshmagic

#!/bin/bash

# some ness for making the same instance of ssh-agent is accessible instead of
# having to start a new instance and load keys for each shell. Also set up 
# load-keys function.
KERNEL=$(uname)
SSH_ENV="$HOME/.ssh/environment"
[ -d $(dirname $SSH_ENV) ] || mkdir -p $(dirname $SSH_ENV)

function load-keys {
    # Exclusion array for file patterns we know are not ssh keys
    # Add any additional patterns to this array to exclude.

    # For some reason zsh on OSX doesn't like direct initialization
    # of the array on OSX
    # (though this works totally fine on zsh in Linux)
    # The below should work regardless of platform or zsh/bash
    local -a EXCLUDE_PATTERNS;EXCLUDE_PATTERNS=('"*.*"'
						'"environment"'
						'"known_hosts"'
						'"config"'
						'"noload*"'
						'"*~"'
						'"#*#"')
    
    echo Loading SSH keys into ssh-agent...
    eval "find $HOME/.ssh/ -maxdepth 1 -type f \( $(printf " ! -iname %s" "${EXCLUDE_PATTERNS[@]}") \) -exec ssh-add {} \;"
}


function start_agent {
    echo "Initialising new SSH agent..."
    /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
    #echo succeeded
    chmod 600 "${SSH_ENV}"
    . "${SSH_ENV}" > /dev/null
    echo "Loading keys with 'load-keys' (Ctrl-C to cancel, load-keys can be manually called later)"
    load-keys
}

# Source SSH settings, if applicable
if [ -f "${SSH_ENV}" ]; then
    . "${SSH_ENV}" > /dev/null
    #ps ${SSH_AGENT_PID} doesn't work under cywgin
    ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent$ > /dev/null || {
        start_agent;
    }
else
    start_agent;
fi