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// Copyright 2013 Joyent Inc.
// Licensed under the AGPLv3, see LICENCE file for details.
package joyent
import (
"fmt"
"strings"
"github.com/joyent/gosdc/cloudapi"
"github.com/juju/juju/environs/config"
"github.com/juju/juju/network"
)
const (
firewallRuleVm = "FROM tag %s TO vm %s ALLOW %s %s"
)
// Helper method to create a firewall rule string for the given machine Id and port
func createFirewallRuleVm(envName string, machineId string, portRange network.PortRange) string {
ports := []string{}
for p := portRange.FromPort; p <= portRange.ToPort; p++ {
ports = append(ports, fmt.Sprintf("PORT %d", p))
}
var portList string
if len(ports) > 1 {
portList = fmt.Sprintf("( %s )", strings.Join(ports, " AND "))
} else if len(ports) == 1 {
portList = ports[0]
}
return fmt.Sprintf(firewallRuleVm, envName, machineId, strings.ToLower(portRange.Protocol), portList)
}
func (inst *joyentInstance) OpenPorts(machineId string, ports []network.PortRange) error {
if inst.env.Config().FirewallMode() != config.FwInstance {
return fmt.Errorf("invalid firewall mode %q for opening ports on instance", inst.env.Config().FirewallMode())
}
fwRules, err := inst.env.compute.cloudapi.ListFirewallRules()
if err != nil {
return fmt.Errorf("cannot get firewall rules: %v", err)
}
machineId = string(inst.Id())
for _, p := range ports {
rule := createFirewallRuleVm(inst.env.Config().Name(), machineId, p)
if e, id := ruleExists(fwRules, rule); e {
_, err := inst.env.compute.cloudapi.EnableFirewallRule(id)
if err != nil {
return fmt.Errorf("couldn't enable rule %s: %v", rule, err)
}
} else {
_, err := inst.env.compute.cloudapi.CreateFirewallRule(cloudapi.CreateFwRuleOpts{
Enabled: true,
Rule: rule,
})
if err != nil {
return fmt.Errorf("couldn't create rule %s: %v", rule, err)
}
}
}
logger.Infof("ports %v opened for instance %q", ports, machineId)
return nil
}
func (inst *joyentInstance) ClosePorts(machineId string, ports []network.PortRange) error {
if inst.env.Config().FirewallMode() != config.FwInstance {
return fmt.Errorf("invalid firewall mode %q for closing ports on instance", inst.env.Config().FirewallMode())
}
fwRules, err := inst.env.compute.cloudapi.ListFirewallRules()
if err != nil {
return fmt.Errorf("cannot get firewall rules: %v", err)
}
machineId = string(inst.Id())
for _, p := range ports {
rule := createFirewallRuleVm(inst.env.Config().Name(), machineId, p)
if e, id := ruleExists(fwRules, rule); e {
_, err := inst.env.compute.cloudapi.DisableFirewallRule(id)
if err != nil {
return fmt.Errorf("couldn't disable rule %s: %v", rule, err)
}
} else {
_, err := inst.env.compute.cloudapi.CreateFirewallRule(cloudapi.CreateFwRuleOpts{
Enabled: false,
Rule: rule,
})
if err != nil {
return fmt.Errorf("couldn't create rule %s: %v", rule, err)
}
}
}
logger.Infof("ports %v closed for instance %q", ports, machineId)
return nil
}
func (inst *joyentInstance) Ports(machineId string) ([]network.PortRange, error) {
if inst.env.Config().FirewallMode() != config.FwInstance {
return nil, fmt.Errorf("invalid firewall mode %q for retrieving ports from instance", inst.env.Config().FirewallMode())
}
machineId = string(inst.Id())
fwRules, err := inst.env.compute.cloudapi.ListMachineFirewallRules(machineId)
if err != nil {
return nil, fmt.Errorf("cannot get firewall rules: %v", err)
}
return getPorts(inst.env.Config().Name(), fwRules), nil
}
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