Class: OpenNebula::Acl

Inherits:
PoolElement show all
Defined in:
lib/opennebula/acl.rb

Overview

Abstract rules of the type USER RESOURCE RIGHTS which are:

USER      -> #<num>
             @<num>
             ALL
RESOURCE  -> + separated list and "/{#,@,%}<num>|ALL"
             VM,
             HOST
             NET
             IMAGE
             USER
             TEMPLATE
             GROUP
             ACL
             SECGROUP
             VDC
RIGHTS    -> + separated list
             USE
             MANAGE
             ADMIN
             CREATE

Constant Summary collapse

USERS = 
{
    "UID"           => 0x100000000,
    "GID"           => 0x200000000,
    "ALL"           => 0x400000000,
    "CLUSTER"       => 0x800000000
}
RESOURCES = 
{
    "VM"            =>    0x1000000000,
    "HOST"          =>    0x2000000000,
    "NET"           =>    0x4000000000,
    "IMAGE"         =>    0x8000000000,
    "USER"          =>   0x10000000000,
    "TEMPLATE"      =>   0x20000000000,
    "GROUP"         =>   0x40000000000,
    "DATASTORE"     =>  0x100000000000,
    "CLUSTER"       =>  0x200000000000,
    "DOCUMENT"      =>  0x400000000000,
    "ZONE"          =>  0x800000000000,
    "SECGROUP"      => 0x1000000000000,
    "VDC"           => 0x2000000000000
}
RIGHTS = 
{
    "USE"           => 0x1,  # Auth. to use an object
    "MANAGE"        => 0x2,  # Auth. to perform management actions
    "ADMIN"         => 0x4,  # Auth. to perform administrative actions
    "CREATE"        => 0x8   # Auth. to create an object
}

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from PoolElement

#id, #name, new_with_id, #to_str

Methods inherited from XMLElement

#[], #add_element, #attr, #delete_element, #each, #each_xpath, #element_xml, #has_elements?, #initialize_xml, #name, #retrieve_elements, #template_like_str, #template_str, #template_xml, #text, #to_hash, #to_xml

Constructor Details

#initialize(xml, client) ⇒ Acl

Constructor

Parameters:

  • xml (String) —

    must be an xml built with build_xml

  • client (Client) —

    represents an XML-RPC connection



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# File 'lib/opennebula/acl.rb', line 79

def initialize(xml, client)
    super(xml,client)
end

Class Method Details

.build_xml(pe_id = nil) ⇒ String

Creates an empty XML representation. It contains the id, if it is specified.

Parameters:

  • pe_id (Integer) (defaults to: nil) —

    rule ID

Returns:

  • (String) —

    an empty XML representation



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# File 'lib/opennebula/acl.rb', line 89

def self.build_xml(pe_id=nil)
    if pe_id
        acl_xml = "<ACL><ID>#{pe_id}</ID></ACL>"
    else
        acl_xml = "<ACL></ACL>"
    end

    XMLElement.build_xml(acl_xml,'ACL')
end

.parse_rule(rule_str) ⇒ Array

Parses a rule string, e.g. “#5 HOST+VM/@12 INFO+CREATE+DELETE”

or OpenNebula::Error objects

Parameters:

  • rule_str (String) —

    an ACL rule in string format

Returns:

  • (Array) —

    an Array containing 3 strings (hex 64b numbers),



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# File 'lib/opennebula/acl.rb', line 151

def self.parse_rule(rule_str)
    ret = Array.new

    rule_str = rule_str.split(" ")

    if rule_str.length != 3 && rule_str.length != 4
        return OpenNebula::Error.new(
            "String needs three components: User, Resource, Rights")
    end

    ret << parse_users(rule_str[0])
    ret << parse_resources(rule_str[1])
    ret << parse_rights(rule_str[2])

    if rule_str.length > 3
        ret << parse_zone(rule_str[3])
    end

    errors=ret.map do |arg|
        if OpenNebula.is_error?(arg)
            arg.message
        else
            nil
        end
    end

    errors.compact!

    if errors.length>0
        return OpenNebula::Error.new(errors.join(', '))
    end

    return ret
end

Instance Method Details

#allocate(user, resource, rights, zone = nil) ⇒ nil, OpenNebula::Error

Creates a new ACL rule.

Parameters:

  • user (String) —

    A string containing a hex number, e.g. 0x100000001

  • resource (String) —

    A string containing a hex number, e.g. 0x2100000001

  • rights (String) —

    A string containing a hex number, e.g. 0x10

  • zone (String) (defaults to: nil) —

    A string containing a hex number, e.g. 0x100000001

Returns:



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# File 'lib/opennebula/acl.rb', line 112

def allocate(user, resource, rights, zone=nil)
    if !zone.nil?
        return super( AclPool::ACL_POOL_METHODS[:addrule],
                    user,
                    resource,
                    rights,
                    zone )
    else
        return super( AclPool::ACL_POOL_METHODS[:addrule],
                    user,
                    resource,
                    rights)
    end
end

#delete ⇒ nil, OpenNebula::Error

Deletes the Acl rule

Returns:



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# File 'lib/opennebula/acl.rb', line 131

def delete()
    super(AclPool::ACL_POOL_METHODS[:delrule])
end

#info ⇒ nil Also known as: info!

Does nothing, individual ACL rules info can’t be retrieved from OpenNebula

Returns:

  • (nil) —

    nil



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# File 'lib/opennebula/acl.rb', line 139

def info()
    return nil
end