Created
May 14, 2012 04:41
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User model
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class User | |
include Dynamoid::Document | |
attr_reader :password | |
attr_accessor :password_confirmation | |
field :username | |
field :email_address | |
field :password_hash | |
field :first_name | |
field :last_name | |
field :time_zone_utc_offset_minutes, :integer, :default => 0 | |
field :active, :integer, :default => 0 | |
field :is_superuser, :integer, :default => 0 | |
field :can_manage_members, :integer, :default => 0 | |
field :can_manage_users, :integer, :default => 0 | |
before_validation :normalize_case | |
before_save :validate_email_address | |
# validates_uniqueness_of :username, :email_address | |
validates_presence_of :first_name, :last_name, :username, :email_address | |
validates_presence_of :password, :on => :create | |
validates_confirmation_of :password, :on => :save | |
def self.list | |
where(:active => 1).order([ :last_name, :first_name ]) | |
end | |
def password=(val) | |
@password = val | |
self.password_hash = self.class.hash_password(val) unless val.blank? | |
end | |
def validate_email_address | |
self.class.valid_email_address?(self.email_address) | |
end | |
def normalize_case | |
self.email_address = self.email_address.downcase rescue nil | |
end | |
def self.salt_length ; 16 ; end | |
def self.salt_chars ; (('a'..'f').to_a).concat(('0'..'9').to_a) ; end | |
def self.hash_password(val, salt = '') | |
require 'digest/sha1' | |
# create the salt if we need to | |
if salt.length != salt_length | |
salt = '' | |
salt_length.times do | |
salt << salt_chars[rand(salt_chars.length)] | |
end | |
end | |
# now, let the hashing begin | |
digest = Digest::SHA1.new | |
digest << salt << val.strip | |
salt << digest.hexdigest | |
end | |
# returns a User or an error code string | |
def self.authenticate(username, password) | |
test = where(:username => username).first || where(:email_address => username).first | |
return 'not found' unless test | |
test.reload | |
return 'not active' unless test.active == 1 && test.password_hash | |
if test.password_hash == hash_password(password, test.password_hash[0,salt_length]) | |
test | |
else | |
'invalid password' | |
end | |
end | |
# Determines whether the input string is a valid email address per RFC specification | |
def self.valid_email_address?(addr, perform_mx_lookup = false) | |
valid = !(addr.to_s =~ /\A([\w\d]+(?:[\w\d\!\#\$\%\&\*\+\-\/\=\?\^\`\{\|\}\~\.]*[\w\d]+)*)@((?:[\w\d]+\.)+[\w]{2,})\z/).nil? | |
user, host = $1, $2 | |
if perform_mx_lookup | |
begin | |
require 'net/dns/resolver' | |
res = Net::DNS::Resolver.new | |
valid = valid && res.mx(host).size > 0 | |
rescue Exception => e | |
puts e.to_s | |
end | |
end | |
valid | |
end | |
end |
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