89 lines
2.7 KiB
Go
89 lines
2.7 KiB
Go
package common
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import (
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"errors"
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"io"
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"strings"
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cp "github.com/containers/image/copy"
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"github.com/containers/image/signature"
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"github.com/containers/image/types"
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)
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// GetCopyOptions constructs a new containers/image/copy.Options{} struct from the given parameters
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func GetCopyOptions(reportWriter io.Writer, signaturePolicyPath string, srcDockerRegistry, destDockerRegistry *DockerRegistryOptions, signing SigningOptions) *cp.Options {
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if srcDockerRegistry == nil {
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srcDockerRegistry = &DockerRegistryOptions{}
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}
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if destDockerRegistry == nil {
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destDockerRegistry = &DockerRegistryOptions{}
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}
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srcContext := srcDockerRegistry.GetSystemContext(signaturePolicyPath)
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destContext := destDockerRegistry.GetSystemContext(signaturePolicyPath)
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return &cp.Options{
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RemoveSignatures: signing.RemoveSignatures,
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SignBy: signing.SignBy,
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ReportWriter: reportWriter,
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SourceCtx: srcContext,
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DestinationCtx: destContext,
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}
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}
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// GetSystemContext Constructs a new containers/image/types.SystemContext{} struct from the given signaturePolicy path
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func GetSystemContext(signaturePolicyPath string) *types.SystemContext {
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sc := &types.SystemContext{}
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if signaturePolicyPath != "" {
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sc.SignaturePolicyPath = signaturePolicyPath
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}
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return sc
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}
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// CopyStringStringMap deep copies a map[string]string and returns the result
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func CopyStringStringMap(m map[string]string) map[string]string {
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n := map[string]string{}
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for k, v := range m {
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n[k] = v
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}
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return n
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}
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// IsTrue determines whether the given string equals "true"
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func IsTrue(str string) bool {
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return str == "true"
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}
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// IsFalse determines whether the given string equals "false"
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func IsFalse(str string) bool {
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return str == "false"
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}
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// IsValidBool determines whether the given string equals "true" or "false"
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func IsValidBool(str string) bool {
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return IsTrue(str) || IsFalse(str)
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}
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// GetPolicyContext creates a signature policy context for the given signature policy path
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func GetPolicyContext(path string) (*signature.PolicyContext, error) {
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policy, err := signature.DefaultPolicy(&types.SystemContext{SignaturePolicyPath: path})
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if err != nil {
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return nil, err
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}
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return signature.NewPolicyContext(policy)
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}
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// ParseRegistryCreds takes a credentials string in the form USERNAME:PASSWORD
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// and returns a DockerAuthConfig
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func ParseRegistryCreds(creds string) (*types.DockerAuthConfig, error) {
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if creds == "" {
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return nil, errors.New("no credentials supplied")
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}
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if !strings.Contains(creds, ":") {
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return nil, errors.New("user name supplied, but no password supplied")
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}
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v := strings.SplitN(creds, ":", 2)
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cfg := &types.DockerAuthConfig{
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Username: v[0],
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Password: v[1],
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}
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return cfg, nil
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}
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