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// Copyright 2016 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package openstack
import (
"fmt"
"os"
"path/filepath"
"regexp"
"github.com/juju/errors"
"github.com/juju/utils"
"gopkg.in/goose.v1/identity"
"gopkg.in/ini.v1"
"github.com/juju/juju/cloud"
"github.com/juju/juju/environs"
)
const (
CredAttrTenantName = "tenant-name"
CredAttrUserName = "username"
CredAttrPassword = "password"
CredAttrDomainName = "domain-name"
CredAttrAccessKey = "access-key"
CredAttrSecretKey = "secret-key"
)
type OpenstackCredentials struct{}
// CredentialSchemas is part of the environs.ProviderCredentials interface.
func (OpenstackCredentials) CredentialSchemas() map[cloud.AuthType]cloud.CredentialSchema {
return map[cloud.AuthType]cloud.CredentialSchema{
cloud.UserPassAuthType: {
{
CredAttrUserName, cloud.CredentialAttr{Description: "The username to authenticate with."},
}, {
CredAttrPassword, cloud.CredentialAttr{
Description: "The password for the specified username.",
Hidden: true,
},
}, {
CredAttrTenantName, cloud.CredentialAttr{Description: "The OpenStack tenant name."},
}, {
CredAttrDomainName, cloud.CredentialAttr{
Description: "The OpenStack domain name.",
Optional: true,
},
},
},
cloud.AccessKeyAuthType: {
{
CredAttrAccessKey, cloud.CredentialAttr{Description: "The access key to authenticate with."},
}, {
CredAttrSecretKey, cloud.CredentialAttr{
Description: "The secret key to authenticate with.",
Hidden: true,
},
}, {
CredAttrTenantName, cloud.CredentialAttr{Description: "The OpenStack tenant name."},
},
},
}
}
// DetectCredentials is part of the environs.ProviderCredentials interface.
func (c OpenstackCredentials) DetectCredentials() (*cloud.CloudCredential, error) {
result := cloud.CloudCredential{
AuthCredentials: make(map[string]cloud.Credential),
}
// Try just using environment variables
creds, user, region, err := c.detectCredential()
if err == nil {
result.DefaultRegion = region
result.AuthCredentials[user] = *creds
}
// Now look for .novarc file in home dir.
novarc := filepath.Join(utils.Home(), ".novarc")
novaInfo, err := ini.LooseLoad(novarc)
if err != nil {
return nil, errors.Annotate(err, "loading novarc file")
}
stripExport := regexp.MustCompile(`(?i)^\s*export\s*`)
keyValues := novaInfo.Section(ini.DEFAULT_SECTION).KeysHash()
if len(keyValues) > 0 {
for k, v := range keyValues {
k = stripExport.ReplaceAllString(k, "")
os.Setenv(k, v)
}
creds, user, region, err := c.detectCredential()
if err == nil {
result.DefaultRegion = region
result.AuthCredentials[user] = *creds
}
}
if len(result.AuthCredentials) == 0 {
return nil, errors.NotFoundf("openstack credentials")
}
return &result, nil
}
func (c OpenstackCredentials) detectCredential() (*cloud.Credential, string, string, error) {
creds := identity.CredentialsFromEnv()
if creds.TenantName == "" {
return nil, "", "", errors.NewNotFound(nil, "OS_TENANT_NAME environment variable not set")
}
if creds.User == "" {
return nil, "", "", errors.NewNotFound(nil, "neither OS_USERNAME nor OS_ACCESS_KEY environment variable not set")
}
if creds.Secrets == "" {
return nil, "", "", errors.NewNotFound(nil, "neither OS_PASSWORD nor OS_SECRET_KEY environment variable not set")
}
user, err := utils.LocalUsername()
if err != nil {
return nil, "", "", errors.Trace(err)
}
// If OS_USERNAME or NOVA_USERNAME is set, assume userpass.
var credential cloud.Credential
if os.Getenv("OS_USERNAME") != "" || os.Getenv("NOVA_USERNAME") != "" {
user = creds.User
credential = cloud.NewCredential(
cloud.UserPassAuthType,
map[string]string{
CredAttrUserName: creds.User,
CredAttrPassword: creds.Secrets,
CredAttrTenantName: creds.TenantName,
CredAttrDomainName: creds.DomainName,
},
)
} else {
credential = cloud.NewCredential(
cloud.AccessKeyAuthType,
map[string]string{
CredAttrAccessKey: creds.User,
CredAttrSecretKey: creds.Secrets,
CredAttrTenantName: creds.TenantName,
},
)
}
region := creds.Region
if region == "" {
region = "<unspecified>"
}
credential.Label = fmt.Sprintf("openstack region %q project %q user %q", region, creds.TenantName, user)
return &credential, user, creds.Region, nil
}
// FinalizeCredential is part of the environs.ProviderCredentials interface.
func (OpenstackCredentials) FinalizeCredential(_ environs.FinalizeCredentialContext, args environs.FinalizeCredentialParams) (*cloud.Credential, error) {
return &args.Credential, nil
}
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