95 lines
2.8 KiB
Go
95 lines
2.8 KiB
Go
package aws
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import (
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"context"
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"fmt"
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"strings"
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"github.com/hashicorp/vault/logical"
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"github.com/hashicorp/vault/logical/framework"
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)
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func pathSTS(b *backend) *framework.Path {
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return &framework.Path{
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Pattern: "sts/" + framework.GenericNameRegex("name"),
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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 role",
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},
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"ttl": &framework.FieldSchema{
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Type: framework.TypeDurationSecond,
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Description: `Lifetime of the token in seconds.
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AWS documentation excerpt: The duration, in seconds, that the credentials
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should remain valid. Acceptable durations for IAM user sessions range from 900
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seconds (15 minutes) to 129600 seconds (36 hours), with 43200 seconds (12
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hours) as the default. Sessions for AWS account owners are restricted to a
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maximum of 3600 seconds (one hour). If the duration is longer than one hour,
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the session for AWS account owners defaults to one hour.`,
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Default: 3600,
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},
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},
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Callbacks: map[logical.Operation]framework.OperationFunc{
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logical.ReadOperation: b.pathSTSRead,
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logical.UpdateOperation: b.pathSTSRead,
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},
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HelpSynopsis: pathSTSHelpSyn,
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HelpDescription: pathSTSHelpDesc,
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}
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}
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func (b *backend) pathSTSRead(ctx context.Context, req *logical.Request, d *framework.FieldData) (*logical.Response, error) {
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policyName := d.Get("name").(string)
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ttl := int64(d.Get("ttl").(int))
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// Read the policy
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policy, err := req.Storage.Get(ctx, "policy/"+policyName)
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if err != nil {
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return nil, fmt.Errorf("error retrieving role: %s", err)
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}
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if policy == nil {
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return logical.ErrorResponse(fmt.Sprintf(
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"Role '%s' not found", policyName)), nil
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}
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policyValue := string(policy.Value)
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if strings.HasPrefix(policyValue, "arn:") {
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if strings.Contains(policyValue, ":role/") {
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return b.assumeRole(
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ctx,
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req.Storage,
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req.DisplayName, policyName, policyValue,
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ttl,
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)
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} else {
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return logical.ErrorResponse(
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"Can't generate STS credentials for a managed policy; use a role to assume or an inline policy instead"),
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logical.ErrInvalidRequest
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}
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}
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// Use the helper to create the secret
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return b.secretTokenCreate(
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ctx,
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req.Storage,
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req.DisplayName, policyName, policyValue,
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ttl,
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)
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}
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const pathSTSHelpSyn = `
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Generate an access key pair + security token for a specific role.
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`
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const pathSTSHelpDesc = `
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This path will generate a new, never before used key pair + security token for
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accessing AWS. The IAM policy used to back this key pair will be
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the "name" parameter. For example, if this backend is mounted at "aws",
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then "aws/sts/deploy" would generate access keys for the "deploy" role.
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Note, these credentials are instantiated using the AWS STS backend.
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The access keys will have a lease associated with them, but revoking the lease
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does not revoke the access keys.
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`
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