open-consul/acl/errors.go

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2014-08-06 22:08:17 +00:00
package acl
import (
"errors"
"fmt"
"strings"
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)
// These error constants define the standard ACL error types. The values
// must not be changed since the error values are sent via RPC calls
// from older clients and may not have the correct type.
const (
errNotFound = "ACL not found"
errRootDenied = "Cannot resolve root ACL"
errDisabled = "ACL support disabled"
errPermissionDenied = "Permission denied"
errInvalidParent = "Invalid Parent"
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)
var (
// ErrNotFound indicates there is no matching ACL.
ErrNotFound = errors.New(errNotFound)
// ErrRootDenied is returned when attempting to resolve a root ACL.
ErrRootDenied = errors.New(errRootDenied)
// ErrDisabled is returned when ACL changes are not permitted since
// they are disabled.
ErrDisabled = errors.New(errDisabled)
Creates new "prepared-query" ACL type and new token capture behavior. Prior to this change, prepared queries had the following behavior for ACLs, which will need to change to support templates: 1. A management token, or a token with read access to the service being queried needed to be provided in order to create a prepared query. 2. The token used to create the prepared query was stored with the query in the state store and used to execute the query. 3. A management token, or the token used to create the query needed to be supplied to perform and CRUD operations on an existing prepared query. This was pretty subtle and complicated behavior, and won't work for templates since the service name is computed at execution time. To solve this, we introduce a new "prepared-query" ACL type, where the prefix applies to the query name for static prepared query types and to the prefix for template prepared query types. With this change, the new behavior is: 1. A management token, or a token with "prepared-query" write access to the query name or (soon) the given template prefix is required to do any CRUD operations on a prepared query, or to list prepared queries (the list is filtered by this ACL). 2. You will no longer need a management token to list prepared queries, but you will only be able to see prepared queries that you have access to (you get an empty list instead of permission denied). 3. When listing or getting a query, because it was easy to capture management tokens given the past behavior, this will always blank out the "Token" field (replacing the contents as <hidden>) for all tokens unless a management token is supplied. Going forward, we should discourage people from binding tokens for execution unless strictly necessary. 4. No token will be captured by default when a prepared query is created. If the user wishes to supply an execution token then can pass it in via the "Token" field in the prepared query definition. Otherwise, this field will default to empty. 5. At execution time, we will use the captured token if it exists with the prepared query definition, otherwise we will use the token that's passed in with the request, just like we do for other RPCs (or you can use the agent's configured token for DNS). 6. Prepared queries with no name (accessible only by ID) will not require ACLs to create or modify (execution time will depend on the service ACL configuration). Our argument here is that these are designed to be ephemeral and the IDs are as good as an ACL. Management tokens will be able to list all of these. These changes enable templates, but also enable delegation of authority to manage the prepared query namespace.
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// ErrPermissionDenied is returned when an ACL based rejection
// happens.
ErrPermissionDenied = PermissionDeniedError{}
Creates new "prepared-query" ACL type and new token capture behavior. Prior to this change, prepared queries had the following behavior for ACLs, which will need to change to support templates: 1. A management token, or a token with read access to the service being queried needed to be provided in order to create a prepared query. 2. The token used to create the prepared query was stored with the query in the state store and used to execute the query. 3. A management token, or the token used to create the query needed to be supplied to perform and CRUD operations on an existing prepared query. This was pretty subtle and complicated behavior, and won't work for templates since the service name is computed at execution time. To solve this, we introduce a new "prepared-query" ACL type, where the prefix applies to the query name for static prepared query types and to the prefix for template prepared query types. With this change, the new behavior is: 1. A management token, or a token with "prepared-query" write access to the query name or (soon) the given template prefix is required to do any CRUD operations on a prepared query, or to list prepared queries (the list is filtered by this ACL). 2. You will no longer need a management token to list prepared queries, but you will only be able to see prepared queries that you have access to (you get an empty list instead of permission denied). 3. When listing or getting a query, because it was easy to capture management tokens given the past behavior, this will always blank out the "Token" field (replacing the contents as <hidden>) for all tokens unless a management token is supplied. Going forward, we should discourage people from binding tokens for execution unless strictly necessary. 4. No token will be captured by default when a prepared query is created. If the user wishes to supply an execution token then can pass it in via the "Token" field in the prepared query definition. Otherwise, this field will default to empty. 5. At execution time, we will use the captured token if it exists with the prepared query definition, otherwise we will use the token that's passed in with the request, just like we do for other RPCs (or you can use the agent's configured token for DNS). 6. Prepared queries with no name (accessible only by ID) will not require ACLs to create or modify (execution time will depend on the service ACL configuration). Our argument here is that these are designed to be ephemeral and the IDs are as good as an ACL. Management tokens will be able to list all of these. These changes enable templates, but also enable delegation of authority to manage the prepared query namespace.
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// ErrInvalidParent is returned when a remotely resolve ACL
// token claims to have a non-root parent
ErrInvalidParent = errors.New(errInvalidParent)
)
Creates new "prepared-query" ACL type and new token capture behavior. Prior to this change, prepared queries had the following behavior for ACLs, which will need to change to support templates: 1. A management token, or a token with read access to the service being queried needed to be provided in order to create a prepared query. 2. The token used to create the prepared query was stored with the query in the state store and used to execute the query. 3. A management token, or the token used to create the query needed to be supplied to perform and CRUD operations on an existing prepared query. This was pretty subtle and complicated behavior, and won't work for templates since the service name is computed at execution time. To solve this, we introduce a new "prepared-query" ACL type, where the prefix applies to the query name for static prepared query types and to the prefix for template prepared query types. With this change, the new behavior is: 1. A management token, or a token with "prepared-query" write access to the query name or (soon) the given template prefix is required to do any CRUD operations on a prepared query, or to list prepared queries (the list is filtered by this ACL). 2. You will no longer need a management token to list prepared queries, but you will only be able to see prepared queries that you have access to (you get an empty list instead of permission denied). 3. When listing or getting a query, because it was easy to capture management tokens given the past behavior, this will always blank out the "Token" field (replacing the contents as <hidden>) for all tokens unless a management token is supplied. Going forward, we should discourage people from binding tokens for execution unless strictly necessary. 4. No token will be captured by default when a prepared query is created. If the user wishes to supply an execution token then can pass it in via the "Token" field in the prepared query definition. Otherwise, this field will default to empty. 5. At execution time, we will use the captured token if it exists with the prepared query definition, otherwise we will use the token that's passed in with the request, just like we do for other RPCs (or you can use the agent's configured token for DNS). 6. Prepared queries with no name (accessible only by ID) will not require ACLs to create or modify (execution time will depend on the service ACL configuration). Our argument here is that these are designed to be ephemeral and the IDs are as good as an ACL. Management tokens will be able to list all of these. These changes enable templates, but also enable delegation of authority to manage the prepared query namespace.
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// IsErrNotFound checks if the given error message is comparable to
// ErrNotFound.
func IsErrNotFound(err error) bool {
return err != nil && strings.Contains(err.Error(), errNotFound)
Creates new "prepared-query" ACL type and new token capture behavior. Prior to this change, prepared queries had the following behavior for ACLs, which will need to change to support templates: 1. A management token, or a token with read access to the service being queried needed to be provided in order to create a prepared query. 2. The token used to create the prepared query was stored with the query in the state store and used to execute the query. 3. A management token, or the token used to create the query needed to be supplied to perform and CRUD operations on an existing prepared query. This was pretty subtle and complicated behavior, and won't work for templates since the service name is computed at execution time. To solve this, we introduce a new "prepared-query" ACL type, where the prefix applies to the query name for static prepared query types and to the prefix for template prepared query types. With this change, the new behavior is: 1. A management token, or a token with "prepared-query" write access to the query name or (soon) the given template prefix is required to do any CRUD operations on a prepared query, or to list prepared queries (the list is filtered by this ACL). 2. You will no longer need a management token to list prepared queries, but you will only be able to see prepared queries that you have access to (you get an empty list instead of permission denied). 3. When listing or getting a query, because it was easy to capture management tokens given the past behavior, this will always blank out the "Token" field (replacing the contents as <hidden>) for all tokens unless a management token is supplied. Going forward, we should discourage people from binding tokens for execution unless strictly necessary. 4. No token will be captured by default when a prepared query is created. If the user wishes to supply an execution token then can pass it in via the "Token" field in the prepared query definition. Otherwise, this field will default to empty. 5. At execution time, we will use the captured token if it exists with the prepared query definition, otherwise we will use the token that's passed in with the request, just like we do for other RPCs (or you can use the agent's configured token for DNS). 6. Prepared queries with no name (accessible only by ID) will not require ACLs to create or modify (execution time will depend on the service ACL configuration). Our argument here is that these are designed to be ephemeral and the IDs are as good as an ACL. Management tokens will be able to list all of these. These changes enable templates, but also enable delegation of authority to manage the prepared query namespace.
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}
// IsErrRootDenied checks if the given error message is comparable to
// ErrRootDenied.
func IsErrRootDenied(err error) bool {
return err != nil && strings.Contains(err.Error(), errRootDenied)
}
// IsErrDisabled checks if the given error message is comparable to
// ErrDisabled.
func IsErrDisabled(err error) bool {
return err != nil && strings.Contains(err.Error(), errDisabled)
Adds support for snapshots and restores. (#2396) * Updates Raft library to get new snapshot/restore API. * Basic backup and restore working, but need some cleanup. * Breaks out a snapshot module and adds a SHA256 integrity check. * Adds snapshot ACL and fills in some missing comments. * Require a consistent read for snapshots. * Make sure snapshot works if ACLs aren't enabled. * Adds a bit of package documentation. * Returns an empty response from restore to avoid EOF errors. * Adds API client support for snapshots. * Makes internal file names match on-disk file snapshots. * Adds DC and token coverage for snapshot API test. * Adds missing documentation. * Adds a unit test for the snapshot client endpoint. * Moves the connection pool out of the client for easier testing. * Fixes an incidental issue in the prepared query unit test. I realized I had two servers in bootstrap mode so this wasn't a good setup. * Adds a half close to the TCP stream and fixes panic on error. * Adds client and endpoint tests for snapshots. * Moves the pool back into the snapshot RPC client. * Adds a TLS test and fixes half-closes for TLS connections. * Tweaks some comments. * Adds a low-level snapshot test. This is independent of Consul so we can pull this out into a library later if we want to. * Cleans up snapshot and archive and completes archive tests. * Sends a clear error for snapshot operations in dev mode. Snapshots require the Raft snapshots to be readable, which isn't supported in dev mode. Send a clear error instead of a deep-down Raft one. * Adds docs for the snapshot endpoint. * Adds a stale mode and index feedback for snapshot saves. This gives folks a way to extract data even if the cluster has no leader. * Changes the internal format of a snapshot from zip to tgz. * Pulls in Raft fix to cancel inflight before a restore. * Pulls in new Raft restore interface. * Adds metadata to snapshot saves and a verify function. * Adds basic save and restore snapshot CLI commands. * Gets rid of tarball extensions and adds restore message. * Fixes an incidental bad link in the KV docs. * Adds documentation for the snapshot CLI commands. * Scuttle any request body when a snapshot is saved. * Fixes archive unit test error message check. * Allows for nil output writers in snapshot RPC handlers. * Renames hash list Decode to DecodeAndVerify. * Closes the client connection for snapshot ops. * Lowers timeout for restore ops. * Updates Raft vendor to get new Restore signature and integrates with Consul. * Bounces the leader's internal state when we do a restore.
2016-10-26 02:20:24 +00:00
}
// IsErrPermissionDenied checks if the given error message is comparable
// to ErrPermissionDenied.
func IsErrPermissionDenied(err error) bool {
return err != nil && strings.Contains(err.Error(), errPermissionDenied)
}
// Arguably this should be some sort of union type.
// The usage of Cause and the rest of the fields is entirely disjoint.
type PermissionDeniedError struct {
Cause string
// Accessor contains information on the accessor used e.g. "token <GUID>"
Accessor string
// Resource (e.g. Service)
Resource Resource
Native API Gateway Config Entries (#15897) * Stub Config Entries for Consul Native API Gateway (#15644) * Add empty InlineCertificate struct and protobuf * apigateway stubs * Stub HTTPRoute in api pkg * Stub HTTPRoute in structs pkg * Simplify api.APIGatewayConfigEntry to be consistent w/ other entries * Update makeConfigEntry switch, add docstring for HTTPRouteConfigEntry * Add TCPRoute to MakeConfigEntry, return unique Kind * Stub BoundAPIGatewayConfigEntry in agent * Add RaftIndex to APIGatewayConfigEntry stub * Add new config entry kinds to validation allow-list * Add RaftIndex to other added config entry stubs * Update usage metrics assertions to include new cfg entries * Add Meta and acl.EnterpriseMeta to all new ConfigEntry types * Remove unnecessary Services field from added config entry types * Implement GetMeta(), GetEnterpriseMeta() for added config entry types * Add meta field to proto, name consistently w/ existing config entries * Format config_entry.proto * Add initial implementation of CanRead + CanWrite for new config entry types * Add unit tests for decoding of new config entry types * Add unit tests for parsing of new config entry types * Add unit tests for API Gateway config entry ACLs * Return typed PermissionDeniedError on BoundAPIGateway CanWrite * Add unit tests for added config entry ACLs * Add BoundAPIGateway type to AllConfigEntryKinds * Return proper kind from BoundAPIGateway * Add docstrings for new config entry types * Add missing config entry kinds to proto def * Update usagemetrics_oss_test.go * Use utility func for returning PermissionDeniedError * EventPublisher subscriptions for Consul Native API Gateway (#15757) * Create new event topics in subscribe proto * Add tests for PBSubscribe func * Make configs singular, add all configs to PBToStreamSubscribeRequest * Add snapshot methods * Add config_entry_events tests * Add config entry kind to topic for new configs * Add unit tests for snapshot methods * Start adding integration test * Test using the new controller code * Update agent/consul/state/config_entry_events.go * Check value of error * Add controller stubs for API Gateway (#15837) * update initial stub implementation * move files, clean up mutex references * Remove embed, use idiomatic names for constructors * Remove stray file introduced in merge * Add APIGateway validation (#15847) * Add APIGateway validation * Add additional validations * Add cert ref validation * Add protobuf definitions * Fix up field types * Add API structs * Move struct fields around a bit * APIGateway InlineCertificate validation (#15856) * Add APIGateway validation * Add additional validations * Add protobuf definitions * Tabs to spaces * Add API structs * Move struct fields around a bit * Add validation for InlineCertificate * Fix ACL test * APIGateway BoundAPIGateway validation (#15858) * Add APIGateway validation * Add additional validations * Add cert ref validation * Add protobuf definitions * Fix up field types * Add API structs * Move struct fields around a bit * Add validation for BoundAPIGateway * APIGateway TCPRoute validation (#15855) * Add APIGateway validation * Add additional validations * Add cert ref validation * Add protobuf definitions * Fix up field types * Add API structs * Add TCPRoute normalization and validation * Add forgotten Status * Add some more field docs in api package * Fix test * Format imports * Rename snapshot test variable names * Add plumbing for Native API GW Subscriptions (#16003) Co-authored-by: Sarah Alsmiller <sarah.alsmiller@hashicorp.com> Co-authored-by: Nathan Coleman <nathan.coleman@hashicorp.com> Co-authored-by: sarahalsmiller <100602640+sarahalsmiller@users.noreply.github.com> Co-authored-by: Andrew Stucki <andrew.stucki@hashicorp.com>
2023-01-18 22:14:34 +00:00
// Access level (e.g. Read)
AccessLevel AccessLevel
// e.g. "sidecar-proxy-1"
ResourceID ResourceDescriptor
}
// Initially we may not have attribution information; that will become more complete as we work this change through
// There are generally three classes of errors
// 1) Named entities without a context
// 2) Unnamed entities with a context
// 3) Completely context free checks (global permissions)
// 4) Errors that only have a cause (for example bad token)
func (e PermissionDeniedError) Error() string {
var message strings.Builder
message.WriteString(errPermissionDenied)
// Type 4)
if e.Cause != "" {
fmt.Fprintf(&message, ": %s", e.Cause)
return message.String()
}
// Should only be empty when default struct is used.
if e.Resource == "" {
return message.String()
}
if e.Accessor == AnonymousTokenID {
message.WriteString(": anonymous token")
} else {
fmt.Fprintf(&message, ": token with AccessorID '%s'", e.Accessor)
}
fmt.Fprintf(&message, " lacks permission '%s:%s'", e.Resource, e.AccessLevel.String())
if e.ResourceID.Name != "" {
fmt.Fprintf(&message, " on %s", e.ResourceID.ToString())
}
if e.Accessor == AnonymousTokenID {
message.WriteString(". The anonymous token is used implicitly when a request does not specify a token.")
}
return message.String()
}
func PermissionDenied(msg string, args ...interface{}) PermissionDeniedError {
cause := fmt.Sprintf(msg, args...)
return PermissionDeniedError{Cause: cause}
}
// TODO Extract information from Authorizer
func PermissionDeniedByACL(authz Authorizer, context *AuthorizerContext, resource Resource, accessLevel AccessLevel, resourceID string) PermissionDeniedError {
desc := NewResourceDescriptor(resourceID, context)
return PermissionDeniedError{Accessor: extractAccessorID(authz), Resource: resource, AccessLevel: accessLevel, ResourceID: desc}
}
func PermissionDeniedByACLUnnamed(authz Authorizer, context *AuthorizerContext, resource Resource, accessLevel AccessLevel) PermissionDeniedError {
desc := NewResourceDescriptor("", context)
return PermissionDeniedError{Accessor: extractAccessorID(authz), Resource: resource, AccessLevel: accessLevel, ResourceID: desc}
}
func extractAccessorID(authz interface{}) string {
var accessor string
switch v := authz.(type) {
case AllowAuthorizer:
accessor = v.AccessorID
case string:
accessor = v
}
return accessor
}