open-consul/command/acl/token/update/token_update.go

354 lines
10 KiB
Go

package tokenupdate
import (
"flag"
"fmt"
"strings"
"github.com/hashicorp/consul/api"
"github.com/hashicorp/consul/command/acl"
"github.com/hashicorp/consul/command/acl/token"
"github.com/hashicorp/consul/command/flags"
"github.com/mitchellh/cli"
)
func New(ui cli.Ui) *cmd {
c := &cmd{UI: ui}
c.init()
return c
}
type cmd struct {
UI cli.Ui
flags *flag.FlagSet
http *flags.HTTPFlags
help string
tokenID string
policyIDs []string
policyNames []string
roleIDs []string
roleNames []string
serviceIdents []string
nodeIdents []string
description string
mergePolicies bool
mergeRoles bool
mergeServiceIdents bool
mergeNodeIdents bool
showMeta bool
upgradeLegacy bool
format string
}
func (c *cmd) init() {
c.flags = flag.NewFlagSet("", flag.ContinueOnError)
c.flags.BoolVar(&c.showMeta, "meta", false, "Indicates that token metadata such "+
"as the content hash and raft indices should be shown for each entry")
c.flags.BoolVar(&c.mergePolicies, "merge-policies", false, "Merge the new policies "+
"with the existing policies")
c.flags.BoolVar(&c.mergeRoles, "merge-roles", false, "Merge the new roles "+
"with the existing roles")
c.flags.BoolVar(&c.mergeServiceIdents, "merge-service-identities", false, "Merge the new service identities "+
"with the existing service identities")
c.flags.BoolVar(&c.mergeNodeIdents, "merge-node-identities", false, "Merge the new node identities "+
"with the existing node identities")
c.flags.StringVar(&c.tokenID, "id", "", "The Accessor ID of the token to update. "+
"It may be specified as a unique ID prefix but will error if the prefix "+
"matches multiple token Accessor IDs")
c.flags.StringVar(&c.description, "description", "", "A description of the token")
c.flags.Var((*flags.AppendSliceValue)(&c.policyIDs), "policy-id", "ID of a "+
"policy to use for this token. May be specified multiple times")
c.flags.Var((*flags.AppendSliceValue)(&c.policyNames), "policy-name", "Name of a "+
"policy to use for this token. May be specified multiple times")
c.flags.Var((*flags.AppendSliceValue)(&c.roleIDs), "role-id", "ID of a "+
"role to use for this token. May be specified multiple times")
c.flags.Var((*flags.AppendSliceValue)(&c.roleNames), "role-name", "Name of a "+
"role to use for this token. May be specified multiple times")
c.flags.Var((*flags.AppendSliceValue)(&c.serviceIdents), "service-identity", "Name of a "+
"service identity to use for this token. May be specified multiple times. Format is "+
"the SERVICENAME or SERVICENAME:DATACENTER1,DATACENTER2,...")
c.flags.Var((*flags.AppendSliceValue)(&c.nodeIdents), "node-identity", "Name of a "+
"node identity to use for this token. May be specified multiple times. Format is "+
"NODENAME:DATACENTER")
c.flags.BoolVar(&c.upgradeLegacy, "upgrade-legacy", false, "Add new polices "+
"to a legacy token replacing all existing rules. This will cause the legacy "+
"token to behave exactly like a new token but keep the same Secret.\n"+
"WARNING: you must ensure that the new policy or policies specified grant "+
"equivalent or appropriate access for the existing clients using this token.")
c.flags.StringVar(
&c.format,
"format",
token.PrettyFormat,
fmt.Sprintf("Output format {%s}", strings.Join(token.GetSupportedFormats(), "|")),
)
c.http = &flags.HTTPFlags{}
flags.Merge(c.flags, c.http.ClientFlags())
flags.Merge(c.flags, c.http.ServerFlags())
flags.Merge(c.flags, c.http.MultiTenancyFlags())
c.help = flags.Usage(help, c.flags)
}
func (c *cmd) Run(args []string) int {
if err := c.flags.Parse(args); err != nil {
return 1
}
if c.tokenID == "" {
c.UI.Error(fmt.Sprintf("Cannot update a token without specifying the -id parameter"))
return 1
}
client, err := c.http.APIClient()
if err != nil {
c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
return 1
}
tokenID, err := acl.GetTokenIDFromPartial(client, c.tokenID)
if err != nil {
c.UI.Error(fmt.Sprintf("Error determining token ID: %v", err))
return 1
}
t, _, err := client.ACL().TokenRead(tokenID, nil)
if err != nil {
c.UI.Error(fmt.Sprintf("Error when retrieving current token: %v", err))
return 1
}
if c.upgradeLegacy {
if t.Rules == "" {
// This is just for convenience it should actually be harmless to allow it
// to go through anyway.
c.UI.Error(fmt.Sprintf("Can't use -upgrade-legacy on a non-legacy token"))
return 1
}
// Reset the rules to nothing forcing this to be updated as a non-legacy
// token but with same secret.
t.Rules = ""
}
if c.description != "" {
// Only update description if the user specified a new one. This does make
// it impossible to completely clear descriptions from CLI but that seems
// better than silently deleting descriptions when using command without
// manually giving the new description. If it's a real issue we can always
// add another explicit `-remove-description` flag but it feels like an edge
// case that's not going to be critical to anyone.
t.Description = c.description
}
parsedServiceIdents, err := acl.ExtractServiceIdentities(c.serviceIdents)
if err != nil {
c.UI.Error(err.Error())
return 1
}
parsedNodeIdents, err := acl.ExtractNodeIdentities(c.nodeIdents)
if err != nil {
c.UI.Error(err.Error())
return 1
}
if c.mergePolicies {
for _, policyName := range c.policyNames {
found := false
for _, link := range t.Policies {
if link.Name == policyName {
found = true
break
}
}
if !found {
// We could resolve names to IDs here but there isn't any reason why its would be better
// than allowing the agent to do it.
t.Policies = append(t.Policies, &api.ACLTokenPolicyLink{Name: policyName})
}
}
for _, policyID := range c.policyIDs {
policyID, err := acl.GetPolicyIDFromPartial(client, policyID)
if err != nil {
c.UI.Error(fmt.Sprintf("Error resolving policy ID %s: %v", policyID, err))
return 1
}
found := false
for _, link := range t.Policies {
if link.ID == policyID {
found = true
break
}
}
if !found {
t.Policies = append(t.Policies, &api.ACLTokenPolicyLink{ID: policyID})
}
}
} else {
t.Policies = nil
for _, policyName := range c.policyNames {
// We could resolve names to IDs here but there isn't any reason why its would be better
// than allowing the agent to do it.
t.Policies = append(t.Policies, &api.ACLTokenPolicyLink{Name: policyName})
}
for _, policyID := range c.policyIDs {
policyID, err := acl.GetPolicyIDFromPartial(client, policyID)
if err != nil {
c.UI.Error(fmt.Sprintf("Error resolving policy ID %s: %v", policyID, err))
return 1
}
t.Policies = append(t.Policies, &api.ACLTokenPolicyLink{ID: policyID})
}
}
if c.mergeRoles {
for _, roleName := range c.roleNames {
found := false
for _, link := range t.Roles {
if link.Name == roleName {
found = true
break
}
}
if !found {
// We could resolve names to IDs here but there isn't any reason why its would be better
// than allowing the agent to do it.
t.Roles = append(t.Roles, &api.ACLTokenRoleLink{Name: roleName})
}
}
for _, roleID := range c.roleIDs {
roleID, err := acl.GetRoleIDFromPartial(client, roleID)
if err != nil {
c.UI.Error(fmt.Sprintf("Error resolving role ID %s: %v", roleID, err))
return 1
}
found := false
for _, link := range t.Roles {
if link.ID == roleID {
found = true
break
}
}
if !found {
t.Roles = append(t.Roles, &api.ACLTokenRoleLink{Name: roleID})
}
}
} else {
t.Roles = nil
for _, roleName := range c.roleNames {
// We could resolve names to IDs here but there isn't any reason why its would be better
// than allowing the agent to do it.
t.Roles = append(t.Roles, &api.ACLTokenRoleLink{Name: roleName})
}
for _, roleID := range c.roleIDs {
roleID, err := acl.GetRoleIDFromPartial(client, roleID)
if err != nil {
c.UI.Error(fmt.Sprintf("Error resolving role ID %s: %v", roleID, err))
return 1
}
t.Roles = append(t.Roles, &api.ACLTokenRoleLink{ID: roleID})
}
}
if c.mergeServiceIdents {
for _, svcid := range parsedServiceIdents {
found := -1
for i, link := range t.ServiceIdentities {
if link.ServiceName == svcid.ServiceName {
found = i
break
}
}
if found != -1 {
t.ServiceIdentities[found] = svcid
} else {
t.ServiceIdentities = append(t.ServiceIdentities, svcid)
}
}
} else {
t.ServiceIdentities = parsedServiceIdents
}
if c.mergeNodeIdents {
for _, nodeid := range parsedNodeIdents {
found := false
for _, link := range t.NodeIdentities {
if link.NodeName == nodeid.NodeName && link.Datacenter == nodeid.Datacenter {
found = true
break
}
}
if !found {
t.NodeIdentities = append(t.NodeIdentities, nodeid)
}
}
} else {
t.NodeIdentities = parsedNodeIdents
}
t, _, err = client.ACL().TokenUpdate(t, nil)
if err != nil {
c.UI.Error(fmt.Sprintf("Failed to update token %s: %v", tokenID, err))
return 1
}
formatter, err := token.NewFormatter(c.format, c.showMeta)
if err != nil {
c.UI.Error(err.Error())
return 1
}
out, err := formatter.FormatToken(t)
if err != nil {
c.UI.Error(err.Error())
return 1
}
if out != "" {
c.UI.Info(out)
}
return 0
}
func (c *cmd) Synopsis() string {
return synopsis
}
func (c *cmd) Help() string {
return flags.Usage(c.help, nil)
}
const (
synopsis = "Update an ACL token"
help = `
Usage: consul acl token update [options]
This command will update a token. Some parts such as marking the token local
cannot be changed.
Update a token description and take the policies from the existing token:
$ consul acl token update -id abcd -description "replication" -merge-policies
Update all editable fields of the token:
$ consul acl token update -id abcd \
-description "replication" \
-policy-name "token-replication" \
-role-name "db-updater"
`
)