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