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// Copyright (c) 2020-2023, Sylabs Inc. All rights reserved.
// Copyright (c) 2020, Control Command Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package endpoint
import (
"fmt"
"net/http"
"strings"
golog "github.com/go-log/log"
keyclient "github.com/sylabs/scs-key-client/client"
libclient "github.com/sylabs/scs-library-client/client"
remoteutil "github.com/sylabs/singularity/v4/internal/pkg/remote/util"
"github.com/sylabs/singularity/v4/pkg/sylog"
useragent "github.com/sylabs/singularity/v4/pkg/util/user-agent"
)
func (ep *Config) KeyserverClientOpts(uri string, op KeyserverOp) ([]keyclient.Option, error) {
// empty uri means to use the default endpoint
isDefault := uri == ""
if err := ep.UpdateKeyserversConfig(); err != nil {
return nil, err
}
var primaryKeyserver *ServiceConfig
for _, kc := range ep.Keyservers {
if kc.Skip {
continue
}
primaryKeyserver = kc
break
}
// shouldn't happen
if primaryKeyserver == nil {
return nil, fmt.Errorf("no primary keyserver configured")
}
var keyservers []*ServiceConfig
if isDefault {
uri = primaryKeyserver.URI
if op == KeyserverVerifyOp {
// verify operation can query multiple keyserver, the token
// is automatically set by the custom client
keyservers = ep.Keyservers
} else {
// use the primary keyserver
keyservers = []*ServiceConfig{
primaryKeyserver,
}
}
} else if ep.Exclusive {
available := make([]string, 0)
found := false
for _, kc := range ep.Keyservers {
if kc.Skip {
continue
}
available = append(available, kc.URI)
if remoteutil.SameKeyserver(uri, kc.URI) {
found = true
break
}
}
if !found {
list := strings.Join(available, ", ")
return nil, fmt.Errorf(
"endpoint is set as exclusive by the system administrator: only %q can be used",
list,
)
}
} else {
keyservers = []*ServiceConfig{
{
URI: uri,
External: true,
},
}
}
co := []keyclient.Option{
keyclient.OptBaseURL(uri),
keyclient.OptUserAgent(useragent.Value()),
keyclient.OptHTTPClient(newClient(keyservers, op)),
}
return co, nil
}
func (ep *Config) LibraryClientConfig(uri string) (*libclient.Config, error) {
// empty uri means to use the default endpoint
isDefault := uri == ""
config := &libclient.Config{
BaseURL: uri,
UserAgent: useragent.Value(),
Logger: (golog.Logger)(sylog.DebugLogger{}),
// TODO - probably should establish an appropriate client timeout here.
HTTPClient: &http.Client{},
}
if isDefault {
libURI, err := ep.GetServiceURI(Library)
if err != nil {
return nil, fmt.Errorf("unable to get library service URI: %v", err)
}
config.AuthToken = ep.Token
config.BaseURL = libURI
} else if ep.Exclusive {
libURI, err := ep.GetServiceURI(Library)
if err != nil {
return nil, fmt.Errorf("unable to get library service URI: %v", err)
}
if !remoteutil.SameURI(uri, libURI) {
return nil, fmt.Errorf(
"endpoint is set as exclusive by the system administrator: only %q can be used",
libURI,
)
}
}
return config, nil
}
// BuilderClientConfig returns the baseURI and authToken associated with ep, in the context of uri.
func (ep *Config) BuilderClientConfig(uri string) (baseURI, authToken string, err error) {
// empty uri means to use the default endpoint
isDefault := uri == ""
baseURI = uri
if isDefault {
buildURI, err := ep.GetServiceURI(Builder)
if err != nil {
return "", "", fmt.Errorf("unable to get builder service URI: %v", err)
}
authToken = ep.Token
baseURI = buildURI
} else if ep.Exclusive {
buildURI, err := ep.GetServiceURI(Builder)
if err != nil {
return "", "", fmt.Errorf("unable to get builder service URI: %v", err)
}
if !remoteutil.SameURI(uri, buildURI) {
return "", "", fmt.Errorf(
"endpoint is set as exclusive by the system administrator: only %q can be used",
buildURI,
)
}
}
return baseURI, authToken, nil
}
// RegistryURI returns the URI of the backing OCI registry for the library service, associated with ep.
func (ep *Config) RegistryURI() (string, error) {
registryURI, err := ep.getServiceConfigVal(Library, RegistryURIConfigKey)
if err != nil {
return "", err
}
if registryURI == "" {
return "", fmt.Errorf("library does not provide an OCI registry")
}
return registryURI, nil
}
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