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forked from cppforlife/bosh-provisioner
/
vcap_user_provisioner.go
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/
vcap_user_provisioner.go
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package vagrant
import (
"fmt"
"strings"
bosherr "github.com/cloudfoundry/bosh-utils/errors"
boshlog "github.com/cloudfoundry/bosh-utils/logger"
boshsys "github.com/cloudfoundry/bosh-utils/system"
bpeventlog "github.com/cppforlife/bosh-provisioner/eventlog"
)
const vcapUserProvisionerLogTag = "VCAPUserProvisioner"
// VCAPUserProvisioner adds and configures vcap user.
type VCAPUserProvisioner struct {
fs boshsys.FileSystem
runner boshsys.CmdRunner
eventLog bpeventlog.Log
logger boshlog.Logger
}
func NewVCAPUserProvisioner(
fs boshsys.FileSystem,
runner boshsys.CmdRunner,
eventLog bpeventlog.Log,
logger boshlog.Logger,
) VCAPUserProvisioner {
return VCAPUserProvisioner{
fs: fs,
runner: runner,
eventLog: eventLog,
logger: logger,
}
}
func (p VCAPUserProvisioner) Provision() error {
stage := p.eventLog.BeginStage("Setting up vcap user", 3)
task := stage.BeginTask("Adding vcap user")
err := task.End(p.setUpVcapUser())
if err != nil {
return bosherr.WrapError(err, "Setting up vcap user")
}
task = stage.BeginTask("Configuring locales")
err = task.End(p.configureLocales())
if err != nil {
return bosherr.WrapError(err, "Configuring locales")
}
task = stage.BeginTask("Harden permissions")
err = task.End(p.hardenPermissinons())
if err != nil {
return bosherr.WrapError(err, "Harden permissions")
}
return nil
}
func (p VCAPUserProvisioner) setUpVcapUser() error {
p.logger.Info(vcapUserProvisionerLogTag, "Setting up vcap user")
_, stderr, _, err := p.runner.RunCommand("groupadd", "--system", "admin")
if err != nil {
if !strings.Contains(stderr, "group 'admin' already exists") {
return err
}
}
_, stderr, _, err = p.runner.RunCommand("useradd", "-m", "--comment", "BOSH System User", "vcap")
if err != nil {
if !strings.Contains(stderr, "user 'vcap' already exists") {
return err
}
}
cmds := [][]string{
{"bash", "-c", "echo 'vcap:c1oudc0w' | chpasswd"},
{"bash", "-c", "echo 'root:c1oudc0w' | chpasswd"},
{"usermod", "-G", "admin,adm,audio,cdrom,dialout,floppy,video,dip", "vcap"}, // todo plugdev
{"usermod", "-s", "/bin/bash", "vcap"},
}
for _, cmd := range cmds {
_, _, _, err := p.runner.RunCommand(cmd[0], cmd[1:]...)
if err != nil {
return err
}
}
// todo setup vcap no-password sudo access
for _, user := range []string{"vagrant", "ubuntu"} {
_, stderr, _, err = p.runner.RunCommand("usermod", "-a", "-G", "vcap", user)
if err != nil {
if !strings.Contains(stderr, fmt.Sprintf("user '%s' does not exist", user)) {
return err
}
}
}
return p.setUpBoshBinPath()
}
func (p VCAPUserProvisioner) setUpBoshBinPath() error {
boshBinExport := "export PATH=/var/vcap/bosh/bin:$PATH"
for _, bashrcPath := range []string{"/root/.bashrc", "/home/vcap/.bashrc"} {
contents, err := p.fs.ReadFileString(bashrcPath)
if err != nil {
return err
}
if !strings.Contains(contents, boshBinExport) {
err := p.fs.WriteFileString(bashrcPath, contents+"\n"+boshBinExport+"\n")
if err != nil {
return err
}
}
}
return nil
}
func (p VCAPUserProvisioner) configureLocales() error {
used, err := p.configureLocalesWithDpkg()
if used {
return err
}
return p.configureLocalesWithSysconfig()
}
func (p VCAPUserProvisioner) configureLocalesWithDpkg() (bool, error) {
if !p.runner.CommandExists("dpkg-reconfigure") {
return false, nil
}
_, _, _, err := p.runner.RunCommand("locale-gen", "en_US.UTF-8")
if err != nil {
return true, err
}
_, _, _, err = p.runner.RunCommand("dpkg-reconfigure", "locales")
if err != nil {
return true, err
}
// Configure vcap user locale (postgres initdb fails if mismatched)
return true, p.fs.WriteFileString("/etc/default/locale", "LANG=en_US.UTF-8\nLC_ALL=en_US.UTF-8")
}
func (p VCAPUserProvisioner) configureLocalesWithSysconfig() error {
err := p.fs.CopyFile("/usr/share/zoneinfo/UTC", "/etc/localtime")
if err != nil {
return err
}
return p.fs.WriteFileString("/etc/sysconfig/i18n", "LANG=\"en_US.UTF-8\"")
}
func (p VCAPUserProvisioner) hardenPermissinons() error {
cmds := [][]string{
{"bash", "-c", "echo 'vcap' > /etc/cron.allow"},
{"bash", "-c", "echo 'vcap' > /etc/at.allow"},
{"chmod", "0770", "/var/lock"},
{"chown", "-h", "root:vcap", "/var/lock"},
{"chown", "-LR", "root:vcap", "/var/lock"},
{"chmod", "0640", "/etc/cron.allow"},
{"chown", "root:vcap", "/etc/cron.allow"},
{"chmod", "0640", "/etc/at.allow"},
{"chown", "root:vcap", "/etc/at.allow"},
}
for _, cmd := range cmds {
_, _, _, err := p.runner.RunCommand(cmd[0], cmd[1:]...)
if err != nil {
return err
}
}
return nil
}