100 lines
3.3 KiB
Go
100 lines
3.3 KiB
Go
package transit
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import (
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"context"
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"github.com/hashicorp/vault/sdk/framework"
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"github.com/hashicorp/vault/sdk/helper/keysutil"
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"github.com/hashicorp/vault/sdk/logical"
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)
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func (b *backend) pathTrim() *framework.Path {
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return &framework.Path{
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Pattern: "keys/" + framework.GenericNameRegex("name") + "/trim",
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Fields: map[string]*framework.FieldSchema{
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"name": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Name of the key",
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},
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"min_available_version": &framework.FieldSchema{
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Type: framework.TypeInt,
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Description: `
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The minimum available version for the key ring. All versions before this
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version will be permanently deleted. This value can at most be equal to the
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lesser of 'min_decryption_version' and 'min_encryption_version'. This is not
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allowed to be set when either 'min_encryption_version' or
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'min_decryption_version' is set to zero.`,
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},
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},
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Callbacks: map[logical.Operation]framework.OperationFunc{
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logical.UpdateOperation: b.pathTrimUpdate(),
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},
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HelpSynopsis: pathTrimHelpSyn,
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HelpDescription: pathTrimHelpDesc,
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}
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}
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func (b *backend) pathTrimUpdate() framework.OperationFunc {
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return func(ctx context.Context, req *logical.Request, d *framework.FieldData) (resp *logical.Response, retErr error) {
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name := d.Get("name").(string)
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p, _, err := b.lm.GetPolicy(ctx, keysutil.PolicyRequest{
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Storage: req.Storage,
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Name: name,
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})
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if err != nil {
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return nil, err
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}
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if p == nil {
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return logical.ErrorResponse("invalid key name"), logical.ErrInvalidRequest
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}
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if !b.System().CachingDisabled() {
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p.Lock(true)
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}
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defer p.Unlock()
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minAvailableVersionRaw, ok := d.GetOk("min_available_version")
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if !ok {
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return logical.ErrorResponse("missing min_available_version"), nil
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}
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minAvailableVersion := minAvailableVersionRaw.(int)
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originalMinAvailableVersion := p.MinAvailableVersion
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switch {
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case minAvailableVersion < originalMinAvailableVersion:
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return logical.ErrorResponse("minimum available version cannot be decremented"), nil
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case p.MinEncryptionVersion == 0:
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return logical.ErrorResponse("minimum available version cannot be set when minimum encryption version is not set"), nil
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case p.MinDecryptionVersion == 0:
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return logical.ErrorResponse("minimum available version cannot be set when minimum decryption version is not set"), nil
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case minAvailableVersion > p.MinEncryptionVersion:
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return logical.ErrorResponse("minimum available version cannot be greater than minmum encryption version"), nil
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case minAvailableVersion > p.MinDecryptionVersion:
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return logical.ErrorResponse("minimum available version cannot be greater than minimum decryption version"), nil
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case minAvailableVersion < 0:
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return logical.ErrorResponse("minimum available version cannot be negative"), nil
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case minAvailableVersion == 0:
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return logical.ErrorResponse("minimum available version should be positive"), nil
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}
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// Ensure that cache doesn't get corrupted in error cases
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p.MinAvailableVersion = minAvailableVersion
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if err := p.Persist(ctx, req.Storage); err != nil {
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p.MinAvailableVersion = originalMinAvailableVersion
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return nil, err
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}
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return nil, nil
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}
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}
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const pathTrimHelpSyn = `Trim key versions of a named key`
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const pathTrimHelpDesc = `
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This path is used to trim key versions of a named key. Trimming only happens
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from the lower end of version numbers.
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`
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