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path_role.go
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path_role.go
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package approle
import (
"fmt"
"strings"
"sync"
"time"
"github.com/fatih/structs"
"github.com/hashicorp/go-uuid"
"github.com/hashicorp/vault/helper/cidrutil"
"github.com/hashicorp/vault/helper/policyutil"
"github.com/hashicorp/vault/helper/strutil"
"github.com/hashicorp/vault/logical"
"github.com/hashicorp/vault/logical/framework"
)
// roleStorageEntry stores all the options that are set on an role
type roleStorageEntry struct {
// UUID that uniquely represents this role. This serves as a credential
// to perform login using this role.
RoleID string `json:"role_id" structs:"role_id" mapstructure:"role_id"`
// UUID that serves as the HMAC key for the hashing the 'secret_id's
// of the role
HMACKey string `json:"hmac_key" structs:"hmac_key" mapstructure:"hmac_key"`
// Policies that are to be required by the token to access this role
Policies []string `json:"policies" structs:"policies" mapstructure:"policies"`
// Number of times the SecretID generated against this role can be
// used to perform login operation
SecretIDNumUses int `json:"secret_id_num_uses" structs:"secret_id_num_uses" mapstructure:"secret_id_num_uses"`
// Duration (less than the backend mount's max TTL) after which a
// SecretID generated against the role will expire
SecretIDTTL time.Duration `json:"secret_id_ttl" structs:"secret_id_ttl" mapstructure:"secret_id_ttl"`
// Duration before which an issued token must be renewed
TokenTTL time.Duration `json:"token_ttl" structs:"token_ttl" mapstructure:"token_ttl"`
// Duration after which an issued token should not be allowed to be renewed
TokenMaxTTL time.Duration `json:"token_max_ttl" structs:"token_max_ttl" mapstructure:"token_max_ttl"`
// A constraint, if set, requires 'secret_id' credential to be presented during login
BindSecretID bool `json:"bind_secret_id" structs:"bind_secret_id" mapstructure:"bind_secret_id"`
// A constraint, if set, specifies the CIDR blocks from which logins should be allowed
BoundCIDRList string `json:"bound_cidr_list" structs:"bound_cidr_list" mapstructure:"bound_cidr_list"`
// Period, if set, indicates that the token generated using this role
// should never expire. The token should be renewed within the duration
// specified by this value. The renewal duration will be fixed if the
// value is not modified on the role. If the `Period` in the role is modified,
// a token will pick up the new value during its next renewal.
Period time.Duration `json:"period" mapstructure:"period" structs:"period"`
}
// roleIDStorageEntry represents the reverse mapping from RoleID to Role
type roleIDStorageEntry struct {
Name string `json:"name" structs:"name" mapstructure:"name"`
}
// rolePaths creates all the paths that are used to register and manage an role.
//
// Paths returned:
// role/ - For listing all the registered roles
// role/<role_name> - For registering an role
// role/<role_name>/policies - For updating the param
// role/<role_name>/secret-id-num-uses - For updating the param
// role/<role_name>/secret-id-ttl - For updating the param
// role/<role_name>/token-ttl - For updating the param
// role/<role_name>/token-max-ttl - For updating the param
// role/<role_name>/bind-secret-id - For updating the param
// role/<role_name>/bound-cidr-list - For updating the param
// role/<role_name>/period - For updating the param
// role/<role_name>/role-id - For fetching the role_id of an role
// role/<role_name>/secret-id - For issuing a secret_id against an role, also to list the secret_id_accessorss
// role/<role_name>/custom-secret-id - For assigning a custom SecretID against an role
// role/<role_name>/secret-id/lookup - For reading the properties of a secret_id
// role/<role_name>/secret-id/destroy - For deleting a secret_id
// role/<role_name>/secret-id-accessor/lookup - For reading secret_id using accessor
// role/<role_name>/secret-id-accessor/destroy - For deleting secret_id using accessor
func rolePaths(b *backend) []*framework.Path {
return []*framework.Path{
&framework.Path{
Pattern: "role/?",
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.ListOperation: b.pathRoleList,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-list"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-list"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name"),
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"bind_secret_id": &framework.FieldSchema{
Type: framework.TypeBool,
Default: true,
Description: "Impose secret_id to be presented when logging in using this role. Defaults to 'true'.",
},
"bound_cidr_list": &framework.FieldSchema{
Type: framework.TypeString,
Description: `Comma separated list of CIDR blocks, if set, specifies blocks of IP
addresses which can perform the login operation`,
},
"policies": &framework.FieldSchema{
Type: framework.TypeString,
Default: "default",
Description: "Comma separated list of policies on the role.",
},
"secret_id_num_uses": &framework.FieldSchema{
Type: framework.TypeInt,
Description: `Number of times a SecretID can access the role, after which the SecretID
will expire. Defaults to 0 meaning that the the secret_id is of unlimited use.`,
},
"secret_id_ttl": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Description: `Duration in seconds after which the issued SecretID should expire. Defaults
to 0, meaning no expiration.`,
},
"token_ttl": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Description: `Duration in seconds after which the issued token should expire. Defaults
to 0, in which case the value will fall back to the system/mount defaults.`,
},
"token_max_ttl": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Description: `Duration in seconds after which the issued token should not be allowed to
be renewed. Defaults to 0, in which case the value will fall back to the system/mount defaults.`,
},
"period": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Default: 0,
Description: `If set, indicates that the token generated using this role
should never expire. The token should be renewed within the
duration specified by this value. At each renewal, the token's
TTL will be set to the value of this parameter.`,
},
"role_id": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Identifier of the role. Defaults to a UUID.",
},
},
ExistenceCheck: b.pathRoleExistenceCheck,
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.CreateOperation: b.pathRoleCreateUpdate,
logical.UpdateOperation: b.pathRoleCreateUpdate,
logical.ReadOperation: b.pathRoleRead,
logical.DeleteOperation: b.pathRoleDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/policies$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"policies": &framework.FieldSchema{
Type: framework.TypeString,
Default: "default",
Description: "Comma separated list of policies on the role.",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRolePoliciesUpdate,
logical.ReadOperation: b.pathRolePoliciesRead,
logical.DeleteOperation: b.pathRolePoliciesDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-policies"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-policies"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/bound-cidr-list$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"bound_cidr_list": &framework.FieldSchema{
Type: framework.TypeString,
Description: `Comma separated list of CIDR blocks, if set, specifies blocks of IP
addresses which can perform the login operation`,
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleBoundCIDRListUpdate,
logical.ReadOperation: b.pathRoleBoundCIDRListRead,
logical.DeleteOperation: b.pathRoleBoundCIDRListDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-bound-cidr-list"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-bound-cidr-list"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/bind-secret-id$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"bind_secret_id": &framework.FieldSchema{
Type: framework.TypeBool,
Default: true,
Description: "Impose secret_id to be presented when logging in using this role.",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleBindSecretIDUpdate,
logical.ReadOperation: b.pathRoleBindSecretIDRead,
logical.DeleteOperation: b.pathRoleBindSecretIDDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-bind-secret-id"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-bind-secret-id"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/secret-id-num-uses$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"secret_id_num_uses": &framework.FieldSchema{
Type: framework.TypeInt,
Description: "Number of times a SecretID can access the role, after which the SecretID will expire.",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleSecretIDNumUsesUpdate,
logical.ReadOperation: b.pathRoleSecretIDNumUsesRead,
logical.DeleteOperation: b.pathRoleSecretIDNumUsesDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-secret-id-num-uses"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-secret-id-num-uses"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/secret-id-ttl$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"secret_id_ttl": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Description: `Duration in seconds after which the issued SecretID should expire. Defaults
to 0, meaning no expiration.`,
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleSecretIDTTLUpdate,
logical.ReadOperation: b.pathRoleSecretIDTTLRead,
logical.DeleteOperation: b.pathRoleSecretIDTTLDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-secret-id-ttl"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-secret-id-ttl"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/period$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"period": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Default: 0,
Description: `If set, indicates that the token generated using this role
should never expire. The token should be renewed within the
duration specified by this value. At each renewal, the token's
TTL will be set to the value of this parameter.`,
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRolePeriodUpdate,
logical.ReadOperation: b.pathRolePeriodRead,
logical.DeleteOperation: b.pathRolePeriodDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-period"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-period"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/token-ttl$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"token_ttl": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Description: `Duration in seconds after which the issued token should expire. Defaults
to 0, in which case the value will fall back to the system/mount defaults.`,
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleTokenTTLUpdate,
logical.ReadOperation: b.pathRoleTokenTTLRead,
logical.DeleteOperation: b.pathRoleTokenTTLDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-token-ttl"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-token-ttl"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/token-max-ttl$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"token_max_ttl": &framework.FieldSchema{
Type: framework.TypeDurationSecond,
Description: `Duration in seconds after which the issued token should not be allowed to
be renewed. Defaults to 0, in which case the value will fall back to the system/mount defaults.`,
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleTokenMaxTTLUpdate,
logical.ReadOperation: b.pathRoleTokenMaxTTLRead,
logical.DeleteOperation: b.pathRoleTokenMaxTTLDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-token-max-ttl"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-token-max-ttl"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/role-id$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"role_id": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Identifier of the role. Defaults to a UUID.",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.ReadOperation: b.pathRoleRoleIDRead,
logical.UpdateOperation: b.pathRoleRoleIDUpdate,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-id"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-id"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/secret-id/?$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"metadata": &framework.FieldSchema{
Type: framework.TypeString,
Description: `Metadata to be tied to the SecretID. This should be a JSON
formatted string containing the metadata in key value pairs.`,
},
"cidr_list": &framework.FieldSchema{
Type: framework.TypeString,
Description: `Comma separated list of CIDR blocks enforcing secret IDs to be used from
specific set of IP addresses. If 'bound_cidr_list' is set on the role, then the
list of CIDR blocks listed here should be a subset of the CIDR blocks listed on
the role.`,
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleSecretIDUpdate,
logical.ListOperation: b.pathRoleSecretIDList,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-secret-id"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-secret-id"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/secret-id/lookup/?$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"secret_id": &framework.FieldSchema{
Type: framework.TypeString,
Description: "SecretID attached to the role.",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleSecretIDLookupUpdate,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-secret-id-lookup"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-secret-id-lookup"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/secret-id/destroy/?$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"secret_id": &framework.FieldSchema{
Type: framework.TypeString,
Description: "SecretID attached to the role.",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleSecretIDDestroyUpdateDelete,
logical.DeleteOperation: b.pathRoleSecretIDDestroyUpdateDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-secret-id-destroy"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-secret-id-destroy"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/secret-id-accessor/lookup/?$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"secret_id_accessor": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Accessor of the SecretID",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleSecretIDAccessorLookupUpdate,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-secret-id-accessor"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-secret-id-accessor"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/secret-id-accessor/destroy/?$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"secret_id_accessor": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Accessor of the SecretID",
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleSecretIDAccessorDestroyUpdateDelete,
logical.DeleteOperation: b.pathRoleSecretIDAccessorDestroyUpdateDelete,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-secret-id-accessor"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-secret-id-accessor"][1]),
},
&framework.Path{
Pattern: "role/" + framework.GenericNameRegex("role_name") + "/custom-secret-id$",
Fields: map[string]*framework.FieldSchema{
"role_name": &framework.FieldSchema{
Type: framework.TypeString,
Description: "Name of the role.",
},
"secret_id": &framework.FieldSchema{
Type: framework.TypeString,
Description: "SecretID to be attached to the role.",
},
"metadata": &framework.FieldSchema{
Type: framework.TypeString,
Description: `Metadata to be tied to the SecretID. This should be a JSON
formatted string containing metadata in key value pairs.`,
},
"cidr_list": &framework.FieldSchema{
Type: framework.TypeString,
Description: `Comma separated list of CIDR blocks enforcing secret IDs to be used from
specific set of IP addresses. If 'bound_cidr_list' is set on the role, then the
list of CIDR blocks listed here should be a subset of the CIDR blocks listed on
the role.`,
},
},
Callbacks: map[logical.Operation]framework.OperationFunc{
logical.UpdateOperation: b.pathRoleCustomSecretIDUpdate,
},
HelpSynopsis: strings.TrimSpace(roleHelp["role-custom-secret-id"][0]),
HelpDescription: strings.TrimSpace(roleHelp["role-custom-secret-id"][1]),
},
}
}
// pathRoleExistenceCheck returns whether the role with the given name exists or not.
func (b *backend) pathRoleExistenceCheck(req *logical.Request, data *framework.FieldData) (bool, error) {
role, err := b.roleEntry(req.Storage, data.Get("role_name").(string))
if err != nil {
return false, err
}
return role != nil, nil
}
// pathRoleList is used to list all the Roles registered with the backend.
func (b *backend) pathRoleList(req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
// This will return the "custom" lock
lock := b.roleLock("")
lock.RLock()
defer lock.RUnlock()
roles, err := req.Storage.List("role/")
if err != nil {
return nil, err
}
return logical.ListResponse(roles), nil
}
// pathRoleSecretIDList is used to list all the 'secret_id_accessor's issued against the role.
func (b *backend) pathRoleSecretIDList(req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
roleName := data.Get("role_name").(string)
if roleName == "" {
return logical.ErrorResponse("missing role_name"), nil
}
// Get the role entry
role, err := b.roleEntry(req.Storage, strings.ToLower(roleName))
if err != nil {
return nil, err
}
if role == nil {
return logical.ErrorResponse(fmt.Sprintf("role %s does not exist", roleName)), nil
}
// Guard the list operation with an outer lock
b.secretIDListingLock.RLock()
defer b.secretIDListingLock.RUnlock()
roleNameHMAC, err := createHMAC(role.HMACKey, roleName)
if err != nil {
return nil, fmt.Errorf("failed to create HMAC of role_name: %s", err)
}
// Listing works one level at a time. Get the first level of data
// which could then be used to get the actual SecretID storage entries.
secretIDHMACs, err := req.Storage.List(fmt.Sprintf("secret_id/%s/", roleNameHMAC))
if err != nil {
return nil, err
}
var listItems []string
for _, secretIDHMAC := range secretIDHMACs {
// For sanity
if secretIDHMAC == "" {
continue
}
// Prepare the full index of the SecretIDs.
entryIndex := fmt.Sprintf("secret_id/%s/%s", roleNameHMAC, secretIDHMAC)
// SecretID locks are not indexed by SecretIDs itself.
// This is because SecretIDs are not stored in plaintext
// form anywhere in the backend, and hence accessing its
// corresponding lock many times using SecretIDs is not
// possible. Also, indexing it everywhere using secretIDHMACs
// makes listing operation easier.
secretIDLock := b.secretIDLock(secretIDHMAC)
secretIDLock.RLock()
result := secretIDStorageEntry{}
if entry, err := req.Storage.Get(entryIndex); err != nil {
secretIDLock.RUnlock()
return nil, err
} else if entry == nil {
secretIDLock.RUnlock()
return nil, fmt.Errorf("storage entry for SecretID is present but no content found at the index")
} else if err := entry.DecodeJSON(&result); err != nil {
secretIDLock.RUnlock()
return nil, err
}
listItems = append(listItems, result.SecretIDAccessor)
secretIDLock.RUnlock()
}
return logical.ListResponse(listItems), nil
}
// validateRoleConstraints checks if the role has at least one constraint
// enabled.
func validateRoleConstraints(role *roleStorageEntry) error {
if role == nil {
return fmt.Errorf("nil role")
}
// At least one constraint should be enabled on the role
switch {
case role.BindSecretID:
case role.BoundCIDRList != "":
default:
return fmt.Errorf("at least one constraint should be enabled on the role")
}
return nil
}
// setRoleEntry grabs a write lock and stores the options on an role into the
// storage. Also creates a reverse index from the role's RoleID to the role
// itself.
func (b *backend) setRoleEntry(s logical.Storage, roleName string, role *roleStorageEntry, previousRoleID string) error {
if roleName == "" {
return fmt.Errorf("missing role name")
}
if role == nil {
return fmt.Errorf("nil role")
}
// Check if role constraints are properly set
if err := validateRoleConstraints(role); err != nil {
return err
}
// Create a storage entry for the role
entry, err := logical.StorageEntryJSON("role/"+strings.ToLower(roleName), role)
if err != nil {
return err
}
if entry == nil {
return fmt.Errorf("failed to create storage entry for role %s", roleName)
}
// Check if the index from the role_id to role already exists
roleIDIndex, err := b.roleIDEntry(s, role.RoleID)
if err != nil {
return fmt.Errorf("failed to read role_id index: %v", err)
}
// If the entry exists, make sure that it belongs to the current role
if roleIDIndex != nil && roleIDIndex.Name != roleName {
return fmt.Errorf("role_id already in use")
}
// When role_id is getting updated, delete the old index before
// a new one is created
if previousRoleID != "" && previousRoleID != role.RoleID {
if err = b.roleIDEntryDelete(s, previousRoleID); err != nil {
return fmt.Errorf("failed to delete previous role ID index")
}
}
// Save the role entry only after all the validations
if err = s.Put(entry); err != nil {
return err
}
// If previousRoleID is still intact, don't create another one
if previousRoleID != "" && previousRoleID == role.RoleID {
return nil
}
// Create a storage entry for reverse mapping of RoleID to role.
// Note that secondary index is created when the roleLock is held.
return b.setRoleIDEntry(s, role.RoleID, &roleIDStorageEntry{
Name: roleName,
})
}
// roleEntry grabs the read lock and fetches the options of an role from the storage
func (b *backend) roleEntry(s logical.Storage, roleName string) (*roleStorageEntry, error) {
if roleName == "" {
return nil, fmt.Errorf("missing role_name")
}
var role roleStorageEntry
lock := b.roleLock(roleName)
lock.RLock()
defer lock.RUnlock()
if entry, err := s.Get("role/" + strings.ToLower(roleName)); err != nil {
return nil, err
} else if entry == nil {
return nil, nil
} else if err := entry.DecodeJSON(&role); err != nil {
return nil, err
}
return &role, nil
}
// pathRoleCreateUpdate registers a new role with the backend or updates the options
// of an existing role
func (b *backend) pathRoleCreateUpdate(req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
roleName := data.Get("role_name").(string)
if roleName == "" {
return logical.ErrorResponse("missing role_name"), nil
}
// Check if the role already exists
role, err := b.roleEntry(req.Storage, roleName)
if err != nil {
return nil, err
}
// Create a new entry object if this is a CreateOperation
if role == nil && req.Operation == logical.CreateOperation {
hmacKey, err := uuid.GenerateUUID()
if err != nil {
return nil, fmt.Errorf("failed to create role_id: %s\n", err)
}
role = &roleStorageEntry{
HMACKey: hmacKey,
}
} else if role == nil {
return nil, fmt.Errorf("role entry not found during update operation")
}
previousRoleID := role.RoleID
if roleIDRaw, ok := data.GetOk("role_id"); ok {
role.RoleID = roleIDRaw.(string)
} else if req.Operation == logical.CreateOperation {
roleID, err := uuid.GenerateUUID()
if err != nil {
return nil, fmt.Errorf("failed to generate role_id: %s\n", err)
}
role.RoleID = roleID
}
if role.RoleID == "" {
return logical.ErrorResponse("invalid role_id"), nil
}
if bindSecretIDRaw, ok := data.GetOk("bind_secret_id"); ok {
role.BindSecretID = bindSecretIDRaw.(bool)
} else if req.Operation == logical.CreateOperation {
role.BindSecretID = data.Get("bind_secret_id").(bool)
}
if boundCIDRListRaw, ok := data.GetOk("bound_cidr_list"); ok {
role.BoundCIDRList = strings.TrimSpace(boundCIDRListRaw.(string))
} else if req.Operation == logical.CreateOperation {
role.BoundCIDRList = data.Get("bound_cidr_list").(string)
}
if role.BoundCIDRList != "" {
valid, err := cidrutil.ValidateCIDRListString(role.BoundCIDRList, ",")
if err != nil {
return nil, fmt.Errorf("failed to validate CIDR blocks: %v", err)
}
if !valid {
return logical.ErrorResponse("invalid CIDR blocks"), nil
}
}
if policiesRaw, ok := data.GetOk("policies"); ok {
role.Policies = policyutil.ParsePolicies(policiesRaw.(string))
} else if req.Operation == logical.CreateOperation {
role.Policies = policyutil.ParsePolicies(data.Get("policies").(string))
}
periodRaw, ok := data.GetOk("period")
if ok {
role.Period = time.Second * time.Duration(periodRaw.(int))
} else if req.Operation == logical.CreateOperation {
role.Period = time.Second * time.Duration(data.Get("period").(int))
}
if role.Period > b.System().MaxLeaseTTL() {
return logical.ErrorResponse(fmt.Sprintf("'period' of '%s' is greater than the backend's maximum lease TTL of '%s'", role.Period.String(), b.System().MaxLeaseTTL().String())), nil
}
if secretIDNumUsesRaw, ok := data.GetOk("secret_id_num_uses"); ok {
role.SecretIDNumUses = secretIDNumUsesRaw.(int)
} else if req.Operation == logical.CreateOperation {
role.SecretIDNumUses = data.Get("secret_id_num_uses").(int)
}
if role.SecretIDNumUses < 0 {
return logical.ErrorResponse("secret_id_num_uses cannot be negative"), nil
}
if secretIDTTLRaw, ok := data.GetOk("secret_id_ttl"); ok {
role.SecretIDTTL = time.Second * time.Duration(secretIDTTLRaw.(int))
} else if req.Operation == logical.CreateOperation {
role.SecretIDTTL = time.Second * time.Duration(data.Get("secret_id_ttl").(int))
}
if tokenTTLRaw, ok := data.GetOk("token_ttl"); ok {
role.TokenTTL = time.Second * time.Duration(tokenTTLRaw.(int))
} else if req.Operation == logical.CreateOperation {
role.TokenTTL = time.Second * time.Duration(data.Get("token_ttl").(int))
}
if tokenMaxTTLRaw, ok := data.GetOk("token_max_ttl"); ok {
role.TokenMaxTTL = time.Second * time.Duration(tokenMaxTTLRaw.(int))
} else if req.Operation == logical.CreateOperation {
role.TokenMaxTTL = time.Second * time.Duration(data.Get("token_max_ttl").(int))
}
// Check that the TokenTTL value provided is less than the TokenMaxTTL.
// Sanitizing the TTL and MaxTTL is not required now and can be performed
// at credential issue time.
if role.TokenMaxTTL > time.Duration(0) && role.TokenTTL > role.TokenMaxTTL {
return logical.ErrorResponse("token_ttl should not be greater than token_max_ttl"), nil
}
var resp *logical.Response
if role.TokenMaxTTL > b.System().MaxLeaseTTL() {
resp = &logical.Response{}
resp.AddWarning("token_max_ttl is greater than the backend mount's maximum TTL value; issued tokens' max TTL value will be truncated")
}
// Store the entry.
return resp, b.setRoleEntry(req.Storage, roleName, role, previousRoleID)
}
// pathRoleRead grabs a read lock and reads the options set on the role from the storage
func (b *backend) pathRoleRead(req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
roleName := data.Get("role_name").(string)
if roleName == "" {
return logical.ErrorResponse("missing role_name"), nil
}
if role, err := b.roleEntry(req.Storage, strings.ToLower(roleName)); err != nil {
return nil, err
} else if role == nil {
return nil, nil
} else {
// Convert the 'time.Duration' values to second.
role.SecretIDTTL /= time.Second
role.TokenTTL /= time.Second
role.TokenMaxTTL /= time.Second
role.Period /= time.Second
// Create a map of data to be returned and remove sensitive information from it
data := structs.New(role).Map()
delete(data, "role_id")
delete(data, "hmac_key")
resp := &logical.Response{
Data: data,
}
if err := validateRoleConstraints(role); err != nil {
resp.AddWarning("Role does not have any constraints set on it. Updates to this role will require a constraint to be set")
}
return resp, nil
}
}
// pathRoleDelete removes the role from the storage
func (b *backend) pathRoleDelete(req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
roleName := data.Get("role_name").(string)
if roleName == "" {
return logical.ErrorResponse("missing role_name"), nil
}
role, err := b.roleEntry(req.Storage, strings.ToLower(roleName))
if err != nil {
return nil, err
}
if role == nil {
return nil, nil
}
// Acquire the lock before deleting the secrets.
lock := b.roleLock(roleName)
lock.Lock()
defer lock.Unlock()
// Just before the role is deleted, remove all the SecretIDs issued as part of the role.
if err = b.flushRoleSecrets(req.Storage, roleName, role.HMACKey); err != nil {
return nil, fmt.Errorf("failed to invalidate the secrets belonging to role '%s': %s", roleName, err)
}
// Delete the reverse mapping from RoleID to the role
if err = b.roleIDEntryDelete(req.Storage, role.RoleID); err != nil {
return nil, fmt.Errorf("failed to delete the mapping from RoleID to role '%s': %s", roleName, err)
}
// After deleting the SecretIDs and the RoleID, delete the role itself
if err = req.Storage.Delete("role/" + strings.ToLower(roleName)); err != nil {
return nil, err
}
return nil, nil
}
// Returns the properties of the SecretID
func (b *backend) pathRoleSecretIDLookupUpdate(req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
roleName := data.Get("role_name").(string)
if roleName == "" {
return logical.ErrorResponse("missing role_name"), nil
}
secretID := data.Get("secret_id").(string)
if secretID == "" {
return logical.ErrorResponse("missing secret_id"), nil
}
// Fetch the role
role, err := b.roleEntry(req.Storage, strings.ToLower(roleName))
if err != nil {
return nil, err
}
if role == nil {
return nil, fmt.Errorf("role %s does not exist", roleName)
}
// Create the HMAC of the secret ID using the per-role HMAC key
secretIDHMAC, err := createHMAC(role.HMACKey, secretID)
if err != nil {
return nil, fmt.Errorf("failed to create HMAC of secret_id: %s", err)
}
// Create the HMAC of the roleName using the per-role HMAC key
roleNameHMAC, err := createHMAC(role.HMACKey, roleName)
if err != nil {
return nil, fmt.Errorf("failed to create HMAC of role_name: %s", err)
}
// Create the index at which the secret_id would've been stored
entryIndex := fmt.Sprintf("secret_id/%s/%s", roleNameHMAC, secretIDHMAC)
return b.secretIDCommon(req.Storage, entryIndex, secretIDHMAC)
}
func (b *backend) secretIDCommon(s logical.Storage, entryIndex, secretIDHMAC string) (*logical.Response, error) {
lock := b.secretIDLock(secretIDHMAC)
lock.RLock()
defer lock.RUnlock()
result := secretIDStorageEntry{}
if entry, err := s.Get(entryIndex); err != nil {
return nil, err
} else if entry == nil {
return nil, nil
} else if err := entry.DecodeJSON(&result); err != nil {
return nil, err
}
result.SecretIDTTL /= time.Second
d := structs.New(result).Map()
// Converting the time values to RFC3339Nano format.
//
// Map() from 'structs' package formats time in RFC3339Nano.
// In order to not break the API due to a modification in the
// third party package, converting the time values again.
d["creation_time"] = result.CreationTime.Format(time.RFC3339Nano)
d["expiration_time"] = result.ExpirationTime.Format(time.RFC3339Nano)
d["last_updated_time"] = result.LastUpdatedTime.Format(time.RFC3339Nano)
resp := &logical.Response{
Data: d,
}
if _, ok := d["SecretIDNumUses"]; ok {
resp.AddWarning("The field SecretIDNumUses is deprecated and will be removed in a future release; refer to secret_id_num_uses instead")
}
return resp, nil
}
func (b *backend) pathRoleSecretIDDestroyUpdateDelete(req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
roleName := data.Get("role_name").(string)
if roleName == "" {
return logical.ErrorResponse("missing role_name"), nil
}
secretID := data.Get("secret_id").(string)
if secretID == "" {
return logical.ErrorResponse("missing secret_id"), nil
}
role, err := b.roleEntry(req.Storage, strings.ToLower(roleName))
if err != nil {
return nil, err
}
if role == nil {
return nil, fmt.Errorf("role %s does not exist", roleName)
}
secretIDHMAC, err := createHMAC(role.HMACKey, secretID)
if err != nil {
return nil, fmt.Errorf("failed to create HMAC of secret_id: %s", err)
}
roleNameHMAC, err := createHMAC(role.HMACKey, roleName)
if err != nil {
return nil, fmt.Errorf("failed to create HMAC of role_name: %s", err)
}
entryIndex := fmt.Sprintf("secret_id/%s/%s", roleNameHMAC, secretIDHMAC)
lock := b.secretIDLock(secretIDHMAC)
lock.Lock()
defer lock.Unlock()
result := secretIDStorageEntry{}
if entry, err := req.Storage.Get(entryIndex); err != nil {
return nil, err
} else if entry == nil {
return nil, nil
} else if err := entry.DecodeJSON(&result); err != nil {
return nil, err
}
// Delete the accessor of the SecretID first
if err := b.deleteSecretIDAccessorEntry(req.Storage, result.SecretIDAccessor); err != nil {
return nil, err
}